JP7069929B2 - Bathroom washing area floor washing device - Google Patents

Description

The present invention relates to a dedicated device for a bathroom washroom floor for washing a bathroom washroom floor.

Dirt on the bathroom floor includes debris such as soap and shampoo used to wash the human body, and dirt (protein-based, carbohydrate-based, oil-based, salts, etc.) generated from the human body.

The applicant has already developed and obtained a patent for a cleaning device for removing these stains and suppressing the generation of mold on the bathroom floor (Patent Document 1).

Japanese Patent No. 4035662

The inventor of the present invention has been researching for many years a technique capable of suppressing the generation of mold on the washroom floor, which has the highest customer needs in the bathroom.

Patent Document 1 discloses a technique of discharging, for example, Ag sterilized water to the bathroom washing floor to maintain the hygiene of the bathroom washing floor, and rotating the water discharge portion to discharge Ag sterilized water to the entire bathroom washing floor. There is. However, the force of the water supply pressure is used when rotating the water discharge part, and a large amount of water is required to discharge water to the entire washing floor, and there is room for improvement from the viewpoint of water saving.

The present invention has been made based on the above findings. An object of the present invention is to provide a bathroom washing place floor washing device capable of discharging water to the entire washing place floor of a bathroom with a small amount of water discharged.

The present invention is a washing device for a bathroom washing place floor for washing a washing place floor having a drain port, a washing means having a sprinkling port for sprinkling washing water on the washing place floor, a rotating portion for rotating the washing means, and a rotating portion. The cleaning means and the control unit for controlling the rotating portion are provided, and the sprinkler port has an opening area of the sprinkler port from the upper side to the lower side in the vertical direction when the sprinkler port is viewed from the front. The cleaning means has a sprinkling portion having the sprinkling port and a casing portion having a sprinkling opening which is an opening corresponding to the sprinkling port, and the sprinkling portion is formed by the casing portion . Covered bathroom washroom floor washer.

When the sprinkler is viewed from the front, the opening area of the sprinkler becomes smaller from the upper side to the lower side in the vertical direction, so that water can be reliably landed on the washing floor, which is far from the washing means. Can be made to. Further, since the operation of the cleaning means can be controlled by rotating the cleaning means in the rotating portion, water can be landed on the entire floor of the washing place even with a small water discharge flow rate. In addition, it is possible to suppress the adhesion of soap or the like to the sprinkler port, and it is possible to suppress the variation in the water discharge range due to the adhesion of the soap or the like.

In the present invention, the sprinkler port is preferably formed in an inverted triangular shape when the sprinkler port is viewed from the front. With such a configuration, the sprinkler port can be easily manufactured, and water can be landed on the floor of the washing place far from the washing means.

According to the present invention, it is possible to provide a bathroom washing place floor washing device capable of discharging water to the entire washing place floor of a bathroom with a small amount of water discharging.

It is a schematic perspective view which shows the example of the bathroom where the cleaning apparatus for a bathroom washing place is installed by one Embodiment of this invention. It is a schematic perspective view which enlarged the neighborhood of the counter of FIG. It is a schematic diagram which illustrates the washing apparatus for a bathroom washing place which concerns on one Embodiment of this invention. It is a front view and the cross-sectional view which exemplify the details of the structure of the nozzle part of FIG. It is an enlarged view of the 1st nozzle opening and the 2nd nozzle opening of FIG. It is a schematic diagram which shows the control flow of the cleaning apparatus for a bathroom washing place which concerns on one Embodiment of this invention. It is a schematic diagram which shows an example of the rotation operation of the nozzle part of FIG. It is a top view which shows the washing place floor corresponding to the black mold control process. It is a schematic diagram which shows the time chart in the black mold suppression process. It is a top view which shows the washing place floor corresponding to the pink slime suppression process. It is a schematic diagram which shows the time chart in the pink slime suppression process. It is a top view of the washing place floor which shows the experimental result about the effect of the pink slime suppression process. It is a table which shows the amount of watering of each step at the time of performing a black mold control step and a pink slime control step. It is a schematic diagram explaining the relationship between the low-concentration sterilized water generation part and the removal device in the cleaning apparatus for a bathroom washing place which concerns on one Embodiment of this invention, FIG. 14A is a schematic perspective view, and FIG. b) is a schematic cross-sectional view. It is a schematic diagram which shows the other structural example of the low-concentration sterilized water generation part and the removal apparatus, FIG. 15A is a schematic perspective view, and FIG. 15B is a schematic cross-sectional view. It is a corresponding figure of FIG. 3 which shows the 1st alternative example of the low-concentration sterilized water generation part. It is a corresponding figure of FIG. 3 which shows the 2nd alternative example of the low-concentration sterilized water generation part. It is a corresponding figure of FIG. 3 which shows the 1st modification of the low-concentration sterilized water generation part. It is a top view explaining the partial sterilization effect. It is a graph which shows the relationship between the sterilization time of black mold and pink slime after occurrence in a bathroom, and the amount of water sprinkling for each effective chlorine concentration. It is a graph which shows the concentration attenuation after watering for each effective chlorine concentration. It is a graph which shows the death time of methylobacterium for each effective chlorine concentration. FIG. 23 (a) is a schematic plan view showing a flow state of the first fluid water (first wave) and the second fluid water (second wave) of the present embodiment, and FIG. 23 (b) is a schematic plan view. )-FIG. 23 (d) are schematic cross-sectional views. It is a chart summarizing an example of suitable watering conditions. It is a schematic diagram which shows an example of the sprinkling range of tap water and low-concentration sterilized water. It is a schematic diagram which shows an example of the sprinkling range of low-concentration sterilized water. It is a schematic diagram which shows an example of the temporary stop control in front of a drainage port. It is a schematic diagram which shows the time chart in the black mold control process which adopted the temporary stop control in front of a drainage port. It is a schematic diagram which shows the time chart in the pink slime suppression process which adopted the temporary stop control in front of a drainage port. It is a schematic diagram which shows how a wave carries a keratin, FIG. 30 (a) is a schematic plan view, and FIG. 30 (b) is a schematic cross-sectional view. It is a schematic diagram which shows the state that the reattachment of a keratin is likely to occur by the decrease of a water level. It is a schematic diagram which shows the state of the confluence of the 1st water landing part and the 2nd water landing part. Further, it is a schematic diagram which shows the state of the confluence of the third water landing part.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In order to facilitate the understanding of the description, the same components are given the same sign as much as possible in each drawing, and duplicate description is omitted. The present invention is not limited to the embodiments shown below.

<Example of bathroom>
First, an example of a bathroom in which a bathroom washing place cleaning device 100 according to an embodiment of the present invention is installed will be described. FIG. 1 is a schematic perspective view showing an example of such a bathroom.

As shown in FIG. 1, in the bathroom 500 in which the bathroom washing device 100 is installed, the first wall 541, the second wall 542, the third wall 543, and the fourth wall are arranged so as to roughly correspond to the four sides of a rectangular parallelepiped. It is equipped with 544. The second wall 542 faces the first wall 541, and the fourth wall 544 faces the third wall 543. The first wall 541 and the second wall 542 are connected to the third wall 543 and the fourth wall 544, respectively.

For convenience of explanation, in the present specification, the direction from the second wall 542 (the wall on the back side in FIG. 1) to the first wall 541 (the wall on the front side in FIG. 1) is referred to as "forward", and the direction opposite to this. Is "backward". In addition, the direction perpendicular to the front-back direction and the up-down direction is the horizontal direction.

A bathtub 510 is provided on the side of the fourth wall 544, and a washroom floor 520 (bathroom washroom floor) is provided between the bathtub 510 and the third wall 543. That is, the bathtub 510 and the washing floor 520 both extend in the front-rear direction and are arranged side by side. The washing floor 520 is in contact with a part of the first wall 541 and a part of the second wall 542 in addition to the third wall 543.

The washroom floor 520 is provided with a drainage port 521. The drainage port 521 is provided near the center of the washroom floor 520 in the front-rear direction and at the end of the washroom floor 520 on the side of the bathtub 510 in the lateral direction. The washing floor 520 is provided with a gentle drainage gradient (inclination) toward the drainage port 521 (for example, about 1 to 5 °). The surface of the washing floor 520 is hydrophilically coated.

A counter 530 is provided on a part of the second wall 542 (on the rear side of the bathroom 500) in contact with the washing floor 520. A mirror, a water tap, a shower hose, and the like are appropriately provided on the second wall 542 of the bathroom 500.

FIG. 2 is an enlarged schematic perspective view of the vicinity of the counter 530. As shown in FIG. 2, the counter 530 has a top plate 531 and a lower cover 532, and is arranged so as to be separated upward from the washing place floor 520. The counter 530 has a substantially rectangular shape that is long in the lateral direction when viewed from above. The width of the counter 530 in the front-rear direction of the bathroom 500 is 80 cm, and the width (length) of the counter 530 in the lateral direction of the bathroom 500 is equivalent to the width of the washroom floor 520 in the lateral direction.

<Waterway of washing equipment for bathroom washing place>
Next, FIG. 3 is a schematic view illustrating a cleaning device for a bathroom washing place according to an embodiment of the present invention, showing a state in which the counter 530 is viewed from the side. As shown in FIG. 3, the bathroom washing place cleaning device 100 (hereinafter, abbreviated as “cleaning device 100” for convenience of explanation) according to the present embodiment has a nozzle portion 10a protruding from the lower part of the counter 530 and a counter 530. It is provided with a control unit 30 (which also serves as a watering control unit and a rotation control unit as described later) housed inside the above.

As shown in FIG. 2, the nozzle portion 10a is arranged at a position separated from the washing place floor 520 at the lower part of the counter 530. The nozzle portion 10a of the present embodiment is installed near the center of the counter 530 in the lateral direction. That is, the nozzle portion 10a is installed near the center in the lateral direction of the washing place floor 520.

Returning to FIG. 3, a water supply pipe 51 and a hot water supply pipe 52 are provided outside the bathroom 500 (for example, behind the second wall 542). The water supply pipe 51 is connected to a water pipe (not shown). As a result, tap water is supplied to the cleaning device 100 from the water supply pipe 51.

Inside the counter 530 (between the top plate 531 and the lower cover 532), the first strainer 53a, the first solenoid valve 54a, the second solenoid valve 54b, the pressure regulating valve 55, and the vacuum breaker 57 are reversed. A check valve 56, a disinfectant water generation unit 20, a second strainer 53b, and a control unit 30 are provided. The first strainer 53a is connected to the water supply pipe 51, and the tap water flow path is branched into two in the downstream of the first strainer 53a.

One flow path on the downstream side of the first strainer 53a directly supplies tap water (an example of water) to the nozzle portion 10a via the first solenoid valve 54a. By opening the first solenoid valve 54a, tap water is supplied to the nozzle portion 10a.

In the other flow path on the downstream side of the first strainer 53a, in order from the upstream side, a second electromagnetic valve 54b, a pressure regulating valve 55, a vacuum breaker 57, a check valve 56, a low-concentration sterilizing water generator 20, and a second strainer. 53b is connected to supply low-concentration sterilizing water to the nozzle portion 10a.

The first solenoid valve 54a and the second solenoid valve 54b are adapted to perform an operation of opening a flow path of tap water and an operation of closing the flow path of tap water, respectively.

The pressure regulating valve 55 controls the pressure of the supplied tap water. Thereby, the flow rate of tap water supplied to the low-concentration sterilizing water generation unit 20 (an example of the sterilizing agent generating device) described later can be appropriately adjusted. By adjusting the flow rate of tap water supplied to the low-concentration sterilizing water generation unit 20, the flow rate of the low-concentration sterilizing water supplied to the nozzle unit 10a is adjusted. (However, the flow rate of tap water may be adjusted by using the second solenoid valve 54b instead of the pressure regulating valve 55 or in addition to the pressure regulating valve 55.)

The low-concentration sterilized water generation unit 20 is an electrolytic cell (electrolytic cell) having an anode and a cathode. The low-concentration sterilizing water generation unit 20 applies a voltage between the anode and the cathode to electrolyze the tap water flowing between the electrodes to generate low-concentration hypochlorous acid. ing. Since tap water contains chloride ions, hypochlorous acid is produced by electrolyzing the chloride ions.

The downstream portion of the low-concentration sterilized water generation unit 20 of the present embodiment is the removal device 20b, and the hypochlorous acid generation tank 20a (bactericidal agent generation) which is the upstream portion of the low-concentration sterilized water generation unit 20. By using the hypochlorous acid produced in (an example of the apparatus) to kill the methylobacterium in tap water, wash water containing no methylobacterium is produced. The effective chlorine concentration of the washing water in the outlet region of the low-concentration sterilized water generation unit 20 is 0.4 to 1.0 ppm (the effective chlorine concentration of tap water is usually 0.1 to 0.3 ppm). As a result, the low-concentration sterilizing water generation unit 20 is adapted to generate low-concentration sterilizing water (an example of washing water containing no methylobacterium) from tap water without complicating the flow path configuration. ..

The low-concentration sterilized water may be metal ionized water (for example, water containing metal ions such as silver ion, copper ion or zinc ion) or water containing ozone. For example, when tap water is electrolyzed, acid (H ⁺ ) is consumed at the cathode and the pH rises near the cathode. That is, alkaline water is generated in the vicinity of the cathode. On the other hand, alkali (OH ⁻ ) is consumed at the anode, and the pH drops in the vicinity of the anode. That is, acidic water is generated in the vicinity of the anode. By changing the flow rate in the low-concentration sterilizing water generation unit 20, the concentration of the component contained in the low-concentration sterilizing water can be controlled. However, the low-concentration sterilized water generation unit 20 is not limited to the electrolysis chamber.

At least a part of the strainers 53a, 53b, the solenoid valves 54a, 54b, the pressure regulating valve 55, the vacuum breaker 57, the check valve 56, the low-concentration sterilizing water generation unit 20, and the control unit 30 is outside the counter 530 or the bathroom 500. It is also possible to install it outside the. For example, as shown by the broken line in FIG. 1, the control unit 30 can be provided outside the bathroom 500.

The first solenoid valve 54a, the second solenoid valve 54b, the pressure regulating valve 55, and the low-concentration sterilizing water generation unit 20 are appropriately controlled by the control unit 30 as a water sprinkling control unit. As a result, the sprinkling of tap water (an example of water) from the nozzle portion 10a and the sprinkling of low-concentration sterilized water from the nozzle portion 10a can be controlled independently of each other.

Specifically, the first solenoid valve 54a and the second solenoid valve 54b open and close the flow path of tap water based on the signal from the control unit 30. As a result, the flow rate of tap water supplied to the downstream side is controlled. Further, the low-concentration sterilizing water generation unit 20 switches ON / OFF of the electrolytic chamber based on the signal from the control unit 30. In this way, the control unit 30 determines the concentration of various components in the low-concentration sterilizing water, the instantaneous flow rate (flow rate per unit time) of the washing water to be discharged (tap water or low-concentration sterilizing water), and the washing water to be discharged. The total amount of water can be controlled.

<Details of the nozzle of the cleaning device for bathroom washing area>
In the present embodiment, the position and orientation of the nozzle portion 10a can be changed so as to change the area on the washing place floor 520 where the washing water (tap water or low-concentration sterilizing water) is sprinkled. Specifically, the nozzle portion 10a is rotationally driven by the electric motor 17. The electric motor 17 includes, for example, a stepping motor.

The electric motor 17 is controlled by a control unit 30 as a rotation control unit. As a result, the nozzle unit 10a changes the rotation angle and the rotation speed by controlling the electric motor 17 based on the signal from the control unit 30. Further, an operation unit 35 is connected to the control unit 30 so that the bathroom user can perform an appropriate operation.

4 (a) is a front view illustrating the details of the configuration of the nozzle portion of the present embodiment, and FIG. 4 (b) is a sectional view taken along line AA of FIG. 4 (a). As shown in FIGS. 4A and 4B, the nozzle portion 10a of the present embodiment covers the sprinkling portion 19 having the first nozzle opening 11a, the second nozzle opening 12a, and the sprinkling portion 19. It has a casing portion 18.

The tap water that has passed through the first solenoid valve 54a is discharged from the first nozzle opening 11a. The low-concentration sterilizing water generated by the low-concentration sterilizing water generation unit 20 is discharged from the second nozzle opening 12a.

The casing portion 18 has a first nozzle opening 11a and a sprinkling opening 18a corresponding to the second nozzle opening 12a, and sprinkling water so that the sprinkling opening 18a corresponds to the first nozzle opening 11a and the second nozzle opening 12a. It covers part 19. By covering the first nozzle opening 11a and the second nozzle opening 12a with the casing portion 19 in this way, it is possible to prevent soap or the like from adhering to the first nozzle opening 11a and the second nozzle opening 12a.

However, the nozzle opening may be shared by sprinkling tap water and sprinkling low-concentration sterilized water. When such a configuration is adopted, the configuration of the nozzle portion 10a is simplified, but both tap water sprinkling and low-concentration sterilizing water sprinkling cannot be carried out at the same time.

FIG. 5 is an enlarged view of the first nozzle opening 11a and the second nozzle opening 12a. As shown in FIG. 5, in a state where the sprinkling portion 19 is covered with the casing portion 18, the first nozzle opening 11a and the second nozzle opening 12a are arranged at positions corresponding to the sprinkling opening 18a.

The first nozzle opening 11a is formed in an inverted triangular shape so that the opening area on the upper side is wide and the opening area on the lower side is narrow. Water is discharged so that the upper side of the first nozzle opening 11a lands on the washing place floor 520 far from the first nozzle opening 11a. Since the opening area on the upper side of the first nozzle opening 11a is wide, more water will be discharged. With such a configuration, the water discharge can be surely landed on the washing place floor 520 far from the first nozzle opening 11a.

<Operation of this embodiment>
Next, an operation example (operation) of the cleaning device 100 of the present embodiment having the above configuration will be described. FIG. 6 is a schematic view showing a control flow of the cleaning device 100 of the present embodiment.

As a watering control unit, the control unit 30 of the cleaning device 100 of the present embodiment sprinkles tap water (an example of water) from the nozzle unit 10a onto the washing floor 520 to treat the horny substance on the washing floor 520 with tap water. The black mold suppressing step S1 is to be carried out together with the drainage port 521. Here, the control unit 30 of the present embodiment controls the electric motor 17 as a rotation control unit during the implementation of the black mold suppressing step S1 and continuously measures the nozzle while the nozzle unit 10a is rotating. Tap water is sprinkled on the washing place floor 520 from the part 10a.

Then, the control unit 30 of the present embodiment, as a watering control unit, is a low-concentration sterilization which is an example of washing water containing no methylobacterium on the bathroom washing place floor 520 from the nozzle part 10a after the black mold suppressing step S1. By sprinkling water, tap water on the washing place floor 520 is allowed to flow to the drain port 521, so that the pink slime suppression step S3 for replacing the tap water on the washing place floor 520 with low-concentration sterilizing water has come to be carried out. (The low-concentration sterilized water in this embodiment is only an example of wash water aiming at zero methylobacterium, but if it has a bactericidal action, it obtains a secondary effect described later with reference to FIG. be able to). Here, the control unit 30 of the present embodiment controls the electric motor 17 as a rotation control unit even when the pink slime suppression step S3 is performed, and continuously while the nozzle unit 10a is rotating. Low-concentration sterilizing water is sprinkled from the nozzle portion 10a onto the washing place floor 520.

Here, FIG. 7 is a schematic view showing an example of the rotational operation of the nozzle portion 10a of the present embodiment. In each arrow of FIG. 7, when the nozzle portion 10 rotates in the direction indicated by the broken line, it indicates that the nozzle portion 10 does not discharge the washing water (tap water or low-concentration sterilized water). On the contrary, when the nozzle portion 10 rotates in the direction represented by the solid line, it means that the nozzle portion 10 discharges washing water (tap water or low-concentration sterilized water).

In the present embodiment, when the implementation of the black mold suppressing step S1 is started, the position where the nozzle portion 10a can land tap water substantially vertically toward the second wall 542 at the lower part of the counter 530 (initial position P1). Therefore, the rotation of the nozzle portion 10a is started.

As will be described later, in the present embodiment, after the pink slime suppression step S3 is completed, the nozzle portion 10a is moved to such an initial position P1. However, for some reason, the nozzle portion 10a may rotate after that, so that the nozzle portion 10a is first moved to such an initial position P1 as necessary (origin setting step A01). ). During the origin setting step A01, tap water discharge is not started.

Next, the nozzle portion 10a has the nozzle portion 10a from such an initial position P1 (the first position where tap water can land on one side of the drain port 521) to the drain port 521. A forward rotation operation in the clockwise direction is performed until the position where tap water can be landed (second position P2) (first forward rotation operation A02). During this time, the first solenoid valve 54a is set to the open state (ON), tap water is discharged, and the first half of the black mold suppressing step S1 is carried out.

During this forward rotation operation, as shown in FIG. 8, the nozzle portion 10a passes through the fourth position P4, which is symmetrical to the second position P2 when viewed in the lateral direction. However, as shown in FIG. 9, the present embodiment Then, the average rotation speed from the initial position P1 to the fourth position P4 is made higher than the average rotation speed from the fourth position P4 to the second position P2.

FIG. 8 is a schematic plan view showing a region of the washing place floor 520 in which the black mold suppressing step S1 is carried out by the control flow of the present embodiment. FIG. 9 is a schematic view showing a time chart in the black mold suppressing step S1.

As shown in FIG. 9, the control unit 30 of the present embodiment controls the electric motor 17 to alternately repeat a rotation state and a stop state as a rotation control unit (according to this, refer to FIG. 30). Waves (pulsations) of flowing water are formed as described later). Then, the control unit 30 is adapted to change the average rotation speed of the nozzle unit 10a by changing the length of time in the stopped state. As shown in FIG. 9, the nozzle is increased by increasing the length of time in the stopped state between the fourth position P4 and the second position P2 and compared with the first position P1 to the fourth position P4. The average rotation speed of the portion 10a is reduced. According to this, the average rotation speed of the nozzle portion 10a can be changed extremely easily and with high accuracy.

In FIG. 9 (and FIG. 11 described later), "1" in the graph shown as "rotation of the nozzle portion" indicates that the nozzle portion 10a is rotating in the clockwise direction (forward rotation operation). "0" indicates that the nozzle portion 10a has stopped rotating, and "-1" indicates that the nozzle portion 10a is rotating in the counterclockwise direction (reverse rotation operation).

After that, the nozzle portion 10a continues the forward rotation operation in the clockwise direction from the second position P2 (the position where tap water can land toward the drain port 521) to the initial position P1 (second forward rotation). Operation A03). However, during this period, the first solenoid valve 54a is closed (ON), tap water is not discharged, and the rotation speed of the nozzle portion 10a is also high.

Then, when the nozzle portion 10a reaches the initial position P1, the counterclockwise rotation operation is started (first reverse rotation operation A04). During the reverse rotation operation until the position returns to the second position P2, the first solenoid valve 54a is set to the open state (ON), tap water is discharged, and the latter half of the black mold suppressing step S1 is carried out.

After that, the nozzle portion 10a continues the counterclockwise rotation operation from the second position P2 (the position where tap water can land toward the drain port 521) to the initial position P1 (second reverse rotation). Rotational operation A05). During this period, the first solenoid valve 54a is closed (ON), tap water is not discharged, and the rotation speed of the nozzle portion 10a is also high (water stop step S2).

According to the black mold suppressing step S1 as described above, tap water is continuously sprinkled from the nozzle portion 10a onto the washing floor 520 while the nozzle portion 10a is rotating, so that the tap water is supplied to the nozzle portion 10a. The water stream is urged by the rotation, and the keratin on the washing place floor 520 can be effectively washed away.

Further, according to the black mold suppressing step S1, tap water is discharged between the first forward rotation operation A02 and the first reverse rotation operation A04, and during the second forward rotation operation A03. Not done. That is, the spouting of tap water continuously lands from the region on the upstream side of the drainage gradient to the region on the downstream side. This makes it possible to more effectively flush the keratin on the washing floor 520 to the drain port 521 together with tap water.

Next, the nozzle portion 10a is directed from the initial position P1 (the first position where low-concentration sterilized water can be landed at a position on one side of the drain port 521) toward the drain port 521. The forward rotation operation in the clockwise direction is performed until the position where the low-concentration sterilizing water can be landed (second position P2) (replacement first forward rotation operation A06). During this period, the first solenoid valve 54a is returned to the closed state (OFF), the second solenoid valve 54b is set to the open state (ON), low-concentration sterilizing water is discharged, and the first half of the pink slime suppression step S3 is carried out. Will be done.

During this forward rotation operation, as shown in FIG. 10, the nozzle portion 10a passes through the fourth position P4 which is symmetrical to the second position P2 when viewed in the lateral direction. However, as shown in FIG. 11, the present embodiment In the pink slime suppression step S3 (first half), the average rotation speed from the initial position P1 to the fourth position P4 is set from the fourth position P4 to the second position P2, as in the black mold suppression step S1 (first half). It is higher than the average rotation speed.

FIG. 10 is a schematic plan view showing a region of the washroom floor 520 in which the pink slime suppression step S3 is carried out by the control flow of the present embodiment, and FIG. 11 is a time chart in the pink slime suppression step S3. It is a schematic diagram which shows.

As shown in FIG. 11, the control unit 30 of the present embodiment controls the electric motor 17 to alternately repeat a rotation state and a stop state as a rotation control unit. Then, the control unit 30 is adapted to change the average rotation speed of the nozzle unit 10a by changing the length of time in the stopped state. As shown in FIG. 11, by increasing the length of the stopped state time between the fourth position P4 and the second position P2 and between the first position P1 and the fourth position P4, the nozzle The average rotation speed of the portion 10a is reduced. According to this, the average rotation speed of the nozzle portion 10a can be changed extremely easily and with high accuracy.

Further, in the present embodiment, the average rotation speed when the black mold suppressing step S1 shown in FIG. 9 is carried out and the average rotation speed when the pink slime suppressing step S3 shown in FIG. 11 is carried out are different. That is, the optimum average rotation speed of the nozzle portion 10a is adopted for each of the black mold suppressing step S1 and the pink slime suppressing step S3.

In particular, in the present embodiment, the average rotation speed when the pink slime suppression step S3 is carried out is smaller than the average rotation speed when the black mold suppressing step S1 is carried out. Therefore, the pink slime suppressing step S3 is carried out more slowly than the black mold suppressing step S1 (FIGS. 8 and 10 show the rotation time of the nozzle portion 10a for each region of the washing floor 520). Along with this, for example, the sprinkling region (spouting distance) of the low-concentration sterilized water in the pink slime suppressing step S3 is set wider (longer) than the sprinkling region (spouting distance) of tap water in the black mold suppressing step S1. Becomes easier. In this case, the tap water sprinkled on the bathroom washroom floor 520 can be more reliably replaced with low-concentration sterilized water. Such an example will be described later with reference to FIGS. 25 and 26.

After that, the nozzle portion 10a continues the forward rotation operation in the clockwise direction from the second position P2 (the position where the low-concentration sterilizing water can land toward the drain port 521) to the initial position P1 (replacement first). 2 forward rotation operation A07). However, during this period, the second solenoid valve 54b is closed (ON), the low-concentration sterilizing water is not discharged, and the rotation speed of the nozzle portion 10a is also high.

Then, when the nozzle portion 10a reaches the initial position P1, the counterclockwise rotation operation is started (replacement first reverse rotation operation A08). During the reverse rotation operation until the position returns to the second position P2, the second solenoid valve 54b is opened (ON), low-concentration sterilizing water is discharged, and the latter half of the pink slime suppression step S3 is performed. ..

After that, the nozzle portion 10a of the present embodiment is temporarily stopped at the second position P2 (the position where the low-concentration sterilized water can land toward the drain port 521), and the tap water of the drain port 521 is concentrated. It may be replaced with low-concentration sterilized water. The pause time is, for example, 50 seconds.

After that, the nozzle portion 10a continues the counterclockwise rotation operation from the second position P2 (the position where the low-concentration sterilizing water can land toward the drain port 521) to the initial position P1 (the first counterclockwise rotation operation). 2 Reverse rotation operation A09). During this period, the second solenoid valve 54b is closed (ON), tap water is not discharged, and the rotation speed of the nozzle portion 10a is also high (water stop step S4).

According to the pink slime suppression step S3 by the control flow as described above, low-concentration sterilizing water is continuously sprinkled from the nozzle portion 10a onto the washing place floor 520 while the nozzle portion 10a is rotating. The concentration sterilized water becomes a water stream urged by the rotation of the nozzle portion 10a, and the tap water on the washing place floor 520 can be effectively washed away.

Further, according to the pink slime suppression step S3 by the control flow, the low-concentration sterilizing water is discharged between the first forward rotation operation A06 and the first reverse rotation operation A08, and the second forward rotation operation is performed. Not implemented during A07. That is, the spouting of the low-concentration sterilizing water continuously lands on the region on the downstream side from the region on the upstream side of the drainage gradient. As a result, the tap water on the washing place floor 520 can be more effectively replaced with the low-concentration sterilizing water by flowing the tap water on the washing place floor 520 to the drain port 521 more effectively.

FIG. 12 shows a region of the washing place floor 520 in which only the black mold suppressing step S1 was carried out and a region of the washing place floor 520 in which the pink slime suppressing step S3 was carried out after the black mold suppressing step S1. It is the result of the actual experiment carried out. In the region of the washing place floor 520 where only the black mold control step S1 was carried out, the residual amount of keratin was almost zero, and although black mold was not generated, pink slime was observed. On the other hand, in the region of the washing place floor 520 in which the pink slime suppression step S3 was carried out after the black mold suppression step S1, the residual amount of keratin was almost zero, no black mold was observed, and no pink slime was observed. ..

FIG. 13 is a table showing the amount of water sprinkled in each of the black mold suppressing step S1 and the pink slime suppressing step S3 of the present embodiment. The black mold suppressing step S1 has a plurality of modes, and in a first mode in which a predetermined predetermined amount of water is sprinkled, a second mode in which the amount of water sprinkled in the first mode is smaller, and a first mode. It has a third mode in which the amount of water sprinkled is larger than the amount of water sprinkled. These plurality of modes can be selected and set by an operation unit (not shown) operated by the user when starting cleaning. The control unit 30 receives a signal operated by this operation unit (not shown), and the control unit 30 controls the motor 17 and the first solenoid valve 54a.

The control unit 30 controls to change the amount of water sprinkled by changing the time for maintaining the open state of the first solenoid valve 54a in order to change the amount of water sprinkled in the first mode, the second mode, and the third mode. do. For example, the open state maintenance time of the first solenoid valve 54a in the second mode is shorter than the open state maintenance time of the first solenoid valve 54a in the first mode, and the open state maintenance time of the first solenoid valve 54a in the first mode. By prolonging the open state maintenance time of the first solenoid valve 54a in the third mode, the total amount of water sprinkled in the black mold suppressing step S1 is changed.

Further, the control unit 30 controls to change the rotation speed of the nozzle unit 10a in order to change the amount of water sprinkled in the first mode, the second mode, and the third mode. For example, the control unit 30 controls the rotation speed of the nozzle unit 10a to rotate twice in the first mode, and controls the rotation speed of the nozzle unit 10a to rotate once in the second mode. Then, by controlling the rotation speed of the nozzle portion 10a to rotate three times, the total amount of water sprinkled in the black mold suppressing step S1 is changed. When the amount of water sprinkled is changed by changing the rotation speed, the rotation speeds of the nozzle portions 10a in the first mode, the second mode, and the third mode are assumed to be the same.

The control unit 30 is configured to change the amount of water sprinkled in each mode in the black mold control step S1, but when any one of the first mode, the second mode, and the third mode is selected and executed in the black mold control step S1. Even so, the total amount of water sprinkled in the pink slime suppression step S3 is controlled so as to be sprinkled at a constant watering amount without changing.

As described above, according to the present embodiment, the amount of methylobacterium was reduced after the black mold suppressing step S1 for removing the keratin on the washing place floor 520 by sprinkling tap water (an example of water). By carrying out the pink slime suppression step S3 in which tap water on the washing place floor 520 is replaced with low-concentration sterilizing water by sprinkling low-concentration sterilizing water, the amount of methylobacterium remaining on the washing place floor 520 is remarkable. Can be reduced to. As a result, the generation of slime on the washing floor 520 can be effectively suppressed.

Further, according to the present embodiment, as shown in FIG. 9, the average rotation speed of the nozzle portion 10a is reduced during the rotation from the fourth position P4 to the second position P2, and the water is dispersed per unit area of tap water. The amount of water is increasing. This is because the region of the washing place floor 520 (the region relatively far from the nozzle portion 10a) where tap water is sprinkled while rotating from the fourth position P4 to the second position P2 is the region from the first position P1 to the fourth position P4. Compared to the area of the washing place floor 520 (the area relatively close to the nozzle part 10a) where tap water is sprinkled while rotating to, it corresponds to the tendency that organic substances such as dirt generated from the human body remain. It is a thing. In this way, for areas where organic matter, especially keratin, has a high residual tendency (or a large residual amount), the amount of water sprayed per unit area can be increased, the amount of water sprayed per unit time can be increased, or the total amount of water can be increased. By increasing the number of sheets, it is possible to more effectively suppress the generation of black mold on the washing floor 520.

Then, according to the present embodiment, as shown in FIG. 11, the average rotation speed of the nozzle portion 10a is reduced during the rotation from the fourth position P4 to the second position P2, and the average rotation speed of the nozzle portion 10a is reduced per unit area of the low-concentration sterilizing water. The amount of water sprinkled is increasing. This is because the amount of tap water sprinkled per unit area during rotation from the 4th position P4 to the 2nd position P2 is the tap water sprinkled while rotating from the 1st position P1 to the 4th position P4. Corresponds to the fact that the amount of water sprinkled per unit area is larger than that of. In this way, for areas where the amount of tap water sprinkled is large, the amount of low-concentration sterilized water sprinkled per unit area can be increased, the amount of low-concentration sterilized water sprinkled per unit time can be increased, or low-concentration sterilization can be performed. By increasing the total amount of water, it is possible to more effectively suppress the generation of slime on the washing place floor 520.

Further, the control unit 30 of the present embodiment controls the rotation speed of the nozzle unit 10a during the implementation of the black mold suppression step S1 and / or the implementation of the pink slime suppression step S3 from the nozzle unit 10a. It is possible to change the time for sprinkling tap water or low-concentration sterilizing water on the washroom floor 520. Thereby, the black mold suppressing step S1 and / or the pink slime suppressing step S3 can be carried out under fine control conditions for each region of the washing place floor 520. Further, the fact that the cleaning device 100 of the present embodiment has such a sprinkling time changing function is that a desired sprinkling amount is obtained when the water supply pressure of tap water is low (the amount of water supplied per unit time is small) or the like. It is effective in realizing.

<Effect of this embodiment>
As described above, the cleaning device 100 of the present embodiment is a cleaning device for a bathroom washing place floor that constitutes a washing place of the bathroom 500 and cleans the washing place floor 520 having a drain port 521, and the washing water is placed on the washing place floor 520. It includes a nozzle unit 10a that is a cleaning means for sprinkling water, and a control unit 30 that controls the nozzle unit 10a. Then, the control unit 30 controls the nozzle unit 10a to sprinkle the washing water so that the keratin that is the cause of the black mold remaining on the washing place floor 520 is discharged from the washing place floor 520 to the drain port 521. The suppression step S1 and the pink slime suppression step S3 in which the washing water is sprinkled so that the residual water containing the methylobacterium remaining on the washing place floor 520 is replaced with the washing water from which the methylobacterium has been removed. implement.

According to the cleaning device 100 of the present embodiment, the black mold suppressing step S1 for removing the keratin that is the cause of the black mold remaining on the washing place floor 520 and the residual water containing methyrobacterium remaining on the washing place floor 520 are removed. By carrying out the pink slime suppression step S3, the keratin and methylobacterium on the washing floor 520 can be remarkably reduced, and the generation of mold on the washing floor 520 can be remarkably suppressed. ..

In particular, in the pink slime suppression step S3, the residual water containing methylobacterium remaining on the washing place floor 520 is replaced with low-concentration sterilized water from which methylobacterium has been removed, so that high-concentration immediate effect is achieved. Methylobacterium on the washroom floor 520 can be significantly reduced without the use of sterile water. Then, instead of sterilizing the bacteria in the bathroom 500, it does not mean that all the nutrient sources are killed or removed, but only a small amount of methylobacterium needs to be killed, so that the water is sprinkled in the pink slime suppression step S3. The low-concentration sterilizing water does not have to be a high-concentration, immediate-acting sterilizing water as previously considered, and the running cost can be kept low.

It can be said that the cleaning device 100 of the present embodiment is not a post-responsible technique of sterilizing after the generation of mold or pink slime, but a proactive response technique of hitting the source of the mold or pink slime. The types of mold generated in the bathroom 500 are black mold and pink slime. According to the cleaning device 100 of the present embodiment, by suppressing these, customer satisfaction of 99% or more can be achieved.

The inventor has identified the causative substances that cause the generation of black mold and pink slime in the bathroom 500 (discovery). That is, the inventor of the present invention states that the cause of black mold is keratin, and that the cause of pink slime is a trace amount of methylobacterium in tap water, which grows on the floor of the washing place to generate pink slime. I found that. And, by being able to identify these, it became possible to develop a technique to remove the causative substances of molds and pink slimes without killing them after the outbreak. Then, this embodiment has been established as a cleaning technique that does not require high concentration of sterilized water or long-term sterilization.

In the present embodiment, in the black mold suppressing step S1, tap water as the first washing water is sprinkled in order to remove the keratin from the washing place floor 520, and in the pink slime suppressing step S3, the methylobacterium is removed from the washing place floor 520. In order to do so, low-concentration sterilizing water as the second washing water is sprinkled, and the black mold suppressing step S1 and the pink slime suppressing step S3 are carried out in such a manner that they are separated from each other in time.

As a result, the first washing water is sprinkled in the black mold suppressing step S1 for washing the keratin so as to be peeled off from the floor surface, and the second washing water is sprinkled in place of the first washing water in the pink slime suppressing step S3. , Can be implemented independently. For example, the former water force and water volume are required to some extent, while the latter water force and water volume are not so necessary. In addition, for the latter, treatment using a filter or sterilizer that removes or kills methylobacterium is required, but it is possible to set conditions independently when sprinkling two wash waters with different requirements. can.

Further, when the control unit 30 focused on the adhesion of the keratin in the step of removing the keratin in the black mold suppressing step S1, it was found that the adhesion of the keratin to the washing place floor 520 differs depending on the number of users and the season. .. Therefore, even if the degree of adhesion of the keratin to the washing place floor 520 changes, the total amount of water sprayed in the black mold suppressing step S1 is different in order to discharge the keratin to the drain port 521, the first mode, the second mode, and the third mode. It is configured so that the mode can be selected and executed. As a result, even if the degree of adhesion of the keratin to the washing place floor 520 changes, the keratin can be discharged to the drain port.

Further, when changing the total amount of water sprinkled in the first mode, the second mode, and the third mode, the control unit 30 controls by changing the operation of the first solenoid valve 54a and the motor 17. The control unit 30 changes the amount of water sprinkled by changing the open state maintenance time of the first solenoid valve 54a. As a result, it is not necessary to adjust the water supply pressure of the supplied water or the opening degree of the first solenoid valve 54a, and the amount of water sprinkled can be changed by simple control. Similarly, when changing the watering amount, the watering amount can be changed by simple control by changing the rotation speed of the nozzle portion 10a.

Further, in the present embodiment, as cleaning means, in addition to the nozzle portion 10a for discharging tap water as the first cleaning water and low-concentration sterilizing water as the second cleaning water, a flow upstream of the nozzle portion 10a. In the road, there is a low-concentration sterilized water generation unit 20 as a removing device for removing methylobacterium from tap water. The second washing water is water in which methylobacterium is not present in the water before it is sprinkled on the washing place floor 520 by removing the methylobacterium.

In short, the keratin remaining on the washing floor 520 can be removed with water. If it is water, it is possible to easily secure the water force and the amount of water required for exfoliating the keratin. As a result, exfoliation can be realized inexpensively and reliably. On the other hand, for the removal of methylobacterium, a large amount of the second washing water, which is the replacement water, is required in order to reliably remove the methylobacterium sprinkled on the wide floor surface. This is because if poor removal occurs, it causes the generation of pink slime. Therefore, by providing a removing device in the flow path upstream of the nozzle portion 10a and removing the methylobacterium before watering by the removing device, the residual water remaining on the washing place floor 520 is present with the methylobacterium. It can be replaced with non-water. This makes it possible to reliably remove methylobacterium, and it is possible to prevent the generation of pink slime with a small amount of water and in a short time.

As described above, the cleaning device 100 of the present embodiment provides a practically excellent bathroom cleaning technique capable of preventing the generation of black mold or pink slime on the bathroom floor 520 inexpensively, reliably, and in a short time. It is an established one.

Further, in the present embodiment, the black mold suppressing step S1 is always carried out first, and the pink slime suppressing step S3 is always carried out later.

In the black mold control step S1, inexpensive tap water is used as the first washing water, and water containing methylobacterium is sprinkled. Therefore, if this is done in a later process, the cause of pink slime generation will be recreated. Therefore, by performing the black mold suppressing step S1 first and then sprinkling the second washing water, it is possible to surely suppress the generation of black mold and pink slime.

Further, in the present embodiment, the control unit 300 controls the nozzle unit 10a, which is a cleaning means, to carry out a water stop step as a leaving step in which water sprinkling is prohibited after the pink slime suppression step S3. ing.

As a result, the washing water containing methylobacterium is not accidentally sprinkled, so that the growth of pink slime can be effectively suppressed.

Further, in the present embodiment, the second washing water is water containing hypochlorous acid or water containing hypochlorous acid after the bactericidal concentration has decreased. Further, the low-concentration sterilizing water generation unit 20 has a hypochlorous acid generation tank 20a, and a removal device 20b is continuously provided in the hypochlorous acid generation tank 20a. Then, when the tap water passes through the removing device 20b, the methylobacterium is removed by the bactericidal action of the hypochlorous acid generated by the hypochlorous acid generation tank 20a to become the second washing water. The hypochlorous acid generation tank 20a is adapted to generate hypochlorous acid by electrolyzing tap water, and the hypochlorous acid generation tank 20a is energized by at least the second washing water in the nozzle portion 10a. It is designed to continue at all times while the water is being discharged from the water.

The use of water containing hypochlorous acid has been considered for the purpose of cleaning the bathroom 500. However, according to the conventional wisdom of technology, the concentration of hypochlorous acid needs to be high in order to have a sufficient effect of sterilizing mold after watering. Specifically, at a concentration of hypochlorous acid generated from chlorine in tap water, the bactericidal action is low, and the bactericidal action (bactericidal power) is further attenuated by the decrease in the concentration of sprinkling water (spouting water), so that the bactericidal action is high. Special treatment for concentration was required, and sterilization treatment also required a long time.

However, as the second washing water of the present embodiment, even low-concentration hypochlorous acid can be adopted. In addition, the second washing water of the present embodiment may be simply water that loses its bactericidal action after watering, as long as methylobacterium is removed.

Further, since the removing device of the present embodiment is provided in the hypochlorous acid generation tank 20, the generation of the second washing water can be realized with an extremely simple configuration.

Further, in this case, since the hypochlorous acid generation tank 20 is continuously energized until the water discharge from the nozzle portion 10a of the second washing water is completed, the sprinkling of fresh water is surely prevented even with simple control. be able to. This makes it possible to easily and surely prevent the generation of pink slime due to erroneous fresh water sprinkling.

The bathroom 500 of the present embodiment includes a washing floor 520 that constitutes a washing place of the bathroom 500 and has a drain port 521, the washing device 100, a counter 530 installed on one side of the bathroom 500, and the said bathroom 500. The bathroom walls 541 to 544 provided on the periphery of the bathroom 500 are provided, and the nozzle portion 10a as a cleaning means is arranged on the counter 530 side, but the nozzle portion 10a as a cleaning means is a washing place. In the drainage flow flowing from the floor 520 toward the drainage port 521, the first wash water and / or the second wash water may be landed on the bathroom walls 541 to 544 on the upstream side of the drainage port 521. ..

The area of the floor where keratin and methylobacterium are most likely to remain is where the counter 530, where humans wash their bodies, is located. By arranging the nozzle portion 10a, which is a cleaning device, at this position, for example, when water from which methylobacterium has been removed using hypochlorous acid is used as the second cleaning water, the concentration is attenuated during spouting (sprinkling). Since the degree of hypochlorous acid is low, it is sufficient that the concentration of hypochlorous acid is even lower.

Further, in this case, the drainage flow flowing toward the drainage port 521 can provide a high water force in the vicinity of the drainage port 521, and the water force acts to push the keratin or the like toward the drainage port 521. can. In general, it may be difficult to remove keratin in the vicinity of the drainage port 521 because the water level drops due to the diffusion of water and the keratin reattaches. However, according to this aspect, the keratin can be removed more reliably. In particular, the nozzle portion 10a as a cleaning means first cleans water and / or second cleans the bathroom walls 541 to 433 on the upstream side of the drain port 521 in the drainage flow flowing from the washing place floor 520 toward the drain port 521. If the water is allowed to land, the keratin can be removed more reliably.

Further, it is preferable that the surface of the washing floor 520 is hydrophilically coated. In this case, even if keratin and methylobacterium adhere to the washing place bed 520, the high affinity between the washing place bed 520 and water works extremely effectively in removing the keratin and bacteria. That is, even with a small amount of wash water and a low wash water force, it is possible to quickly and sufficiently suppress black mold (exfoliation) or pink slime (replacement with water containing no methylobacteria).

Further, it is preferable that the washing place floor 520 is formed with a groove 522 extending in a direction non-parallel to the direction in which the first washing water and / or the second washing water lands (FIG. 30B). reference). In this case, when the sprinkled washing water collides with the washing place floor 520 or flows on the washing place floor 520, the washing water collides with the groove 522 and a vertical wave (pulsation of water) is formed. By disturbing the flow of water in this way, keratin and methylobacterium are easily peeled off from the washing place floor 520. Further, even when the washing water spreads and flows on the washing place floor 520, the reattachment of keratin and methylobacterium to the floor is suppressed by the wave. This makes it possible to reliably remove keratin and methylobacterium from the floor even if the water force and the amount of water to be sprinkled are small.

Further, the control unit 300 controls the nozzle unit 10a as a cleaning means so that the first cleaning water is drained to the drain port 521 after the black mold suppressing step S1 and before the pink slime suppressing step S3. It is preferable that the watering standby process is carried out. In this case, the amount of the second wash water required to replace the first wash water with the second wash water is small.

Further, when the washing device 100 of the present embodiment is used to wash the washing floor 520 of the bathroom 500, it is more desirable to adopt the regulation according to the usage mode of the user. Specifically, if water is sprinkled from the cleaning device 100 against the intention of the user, the sprinkling may collide with a person, and the collision may affect the removability and replaceability of the keratin. It is also important to prevent scattering to the outside of the bathroom.

For example, it is preferable that the control unit 300 prohibits the execution of the black mold suppressing step S1 and / or the pink slime suppressing step S3 under preset conditions, or makes an emergency stop. Specifically, for example, the control unit 300 prohibits or urgently stops the execution of the black mold suppressing step S1 and / or the pink slime suppressing step S3 based on the signal indicating that the bathroom 500 has a user. It is preferable that the state is as follows. Alternatively, for example, the control unit 300 prohibits the execution of the black mold suppressing step S1 and / or the pink slime suppressing step S3 based on the signal indicating that the door of the bathroom 500 is open, or causes an emergency stop. It is preferable that it is.

<Variations of watering control>
The cleaning device 100 of the present embodiment is a cleaning device for a bathroom washing place floor that constitutes a washing place of a bathroom 500 and cleans a washing place floor 520 having a drain port 521, and is a washing means for sprinkling washing water on the washing place floor 520. The nozzle unit 10a is provided with a control unit 30 for controlling the nozzle unit 10a. Then, the control unit 30 controls the nozzle unit 10a to sprinkle the washing water so that the keratin that is the cause of the black mold remaining on the washing place floor 520 is discharged from the washing place floor 520 to the drain port 521. The suppression step S1 and the pink slime suppression step S3 in which the washing water is sprinkled so that the residual water containing the methylobacterium remaining on the washing place floor 520 is replaced with the washing water from which the methylobacterium has been removed. It is supposed to be carried out. Then, the control unit 300 is configured to change the watering to the washing place floor 520 in the black mold suppressing step S1 and the pink slime suppressing step S3.

In the black mold control step S1, it is important to strip off the keratin remaining on the washing floor 520 and discharge it without leaving it in the drain port 521. When removing the keratin only by sprinkling water, it is important to soften the keratin and peel it off, and it is desirable to increase the amount of water and the water force.

On the other hand, in the pink slime suppression step S3 in which wash water containing no methylobacterium is prepared and sprinkled with water to replace the residual water, if the removal of methylobacterium is insufficient, the watered methylobacterium is sprinkled. Umm produces pink slime. Therefore, high removal performance is required. In addition, if the washing water sprinkled in the pink slime suppression step S3 does not have bactericidal properties, or if the bactericidal component has a low concentration, the generated pink slime cannot be removed, so that the methylobacterium before sprinkling cannot be removed. High accuracy is required for offal removal performance.
As described above, there are different requirements in the two steps of the present embodiment. For example, when the pink slime control step S3 is executed with the water amount and water force of the water sprinkling in the black mold control step S1, the methylobacterium is increased before watering. In order to remove accurately, the removal means must have very high performance.
In the present embodiment, in the pink slime suppression step S3, based on the peculiar knowledge of the present inventor that there is no requirement to soothe or peel off the keratin, the method of watering is optimally changed in both steps. It meets the demands at a high level and enhances the removal performance of methylobacterium.

The nozzle portion 10a as a cleaning means is configured to use water as the cleaning water used in the black mold suppressing step S1, and the control unit 30 has a pink slime suppressing step after executing the black mold suppressing step S1. S3 is to be carried out.
Here, the control unit 30 controls the nozzle unit 10a to raise the lower portions of the bathroom walls 541 to 544 that rise around the washroom floor 520 and the washroom floor 520 in both the black mold suppressing step S1 and the pink slime suppressing step S3. It is more preferable to sprinkle water on the floor, and from the watering position with respect to the lower part of the bathroom wall 541 to 544 by tap water in the black mold suppressing step S1, the methiro in the pink slime suppressing step S3 carried out after the black mold suppressing step S1. It is more preferable that the watering position with respect to the lower part of the bathroom walls 541 to 544 with the wash water from which the bacteria have been removed is higher.

The inventor of the present invention has found that most of the causes of the generation of black mold in the bathroom 500 are keratin, and also found that water may be used for exfoliating. Therefore, it is preferable to carry out the black mold control step S1 with the cheapest and safest water, for example, tap water.
On the other hand, when the black mold suppressing step S1 is performed with water, water is also sprinkled so as to increase methylobacterium in the water. Therefore, it is preferable that the black mold suppressing step S1 is always performed before the pink slime suppressing step S3.
By adopting the simple control mode as described above, the problem of suppressing black mold by water can be solved.
Further, since keratin is generated when the user washes the body, it tends to accumulate near the walls of the bathroom walls 541 to 544 due to the influence of a shower or the like. Therefore, by allowing the watering in the black mold suppressing step S1 to extend to the lower part of the wall, the keratin near the wall can be surely removed.
On the other hand, if methylobacterium is sprinkled on the wall, the possibility of pink slime on the wall increases. Therefore, the watering area of the pink slime suppressing step S3 is set to a wider range than the latter so as to cover the entire watering area of the black mold suppressing step S1, that is, the higher position of the bathroom wall 541 to 544 in the pink slime suppressing step S3. It is preferable to sprinkle water up to. As a result, it is possible to realize washing with water with simple control and at low cost, and it is possible to provide an extremely useful effect in practical use.

Further, the control unit 30 controls the nozzle unit 10a, which is a cleaning means, so that the amount of water sprinkled per unit time in the pink slime suppression step S3 is smaller than the amount of water sprinkled per unit time in the black mold suppressing step S1. It is preferable that the product is designed to be used.

In the pink slime suppression step S3, for example, water from which methylobacterium in water has been removed before watering is sprinkled, but the ability to soothe or peel off the keratin attached to the floor surface is not required. That is, in the pink slime suppression step S3, it is sufficient that the amount of water sprinkled per unit time is small. And it is easy to remove methylobacterium before watering if the amount of watering is small.
On the other hand, if the amount of water sprinkled (flow rate) in the pink slime suppression step S3 is increased, the replacement performance can be improved and the time required for replacement can be shortened. However, it is necessary to have high production performance in order to secure the production amount of wash water containing no methylobacterium.
In short, in the pink slime suppression step S3, it is preferable to reduce the amount of water sprinkled per unit time based on the finding that the amount of water and the water force for watering are unnecessary. As a result, it is possible to construct a system that can reliably replace the residual water at a low cost.

Further, the control unit 30 implements a watering standby step of stopping watering after the black mold suppressing step S1 and before the pink slime suppressing step S3 by controlling the nozzle unit 10a which is a cleaning means. It is preferable that the state is as follows.

For example, in the black mold suppressing step S1 performed with water, a large amount of residual water remains due to a large amount of watering. To completely replace all of this with methylobacterium-free wash water requires the production of a large amount of methylobacterium-free wash water. Therefore, it is preferable to provide a standby step of waiting for the residual water remaining after watering in the black mold suppressing step S1 to be drained to the drain port 521. As a result, it becomes possible to further suppress the amount of wash water that does not contain methylobacterium, and it is possible to make the configuration even cheaper and simpler.

Further, the control unit 30 controls the nozzle unit 10a, which is a cleaning means, so that the water sprinkling force per unit time of the pink slime suppression step S3 is smaller than the water sprinkling water force per unit time of the black mold suppressing step S1. It is preferable that the product is designed to be used.

According to this, it is possible to prevent the methylobacterium in the residual water of the washing place floor 520 from being scattered on the bathroom walls 541 to 544 and the like due to the watering in the pink slime suppressing step S3. As a result, it is possible to prevent the residual water scattered on the bathroom walls 541 to 544 from being scattered again on the replaced washing floor 520 and causing pink slime to be generated on the washing floor 520.

Further, the control unit 30 has a larger total amount of water sprinkled per unit area of the washing place floor 520 in the pink slime suppressing step S3 than the total amount of water sprinkled per unit area of the washing place floor 520 in the black mold suppressing step S1. As described above, it is preferable that the nozzle portion 10a, which is a cleaning means, is controlled.

In the bathroom 500, even if the water level at the water landing position is high, the water level spreads to the floor surface of the bathroom 500 in the drainage process toward the drain port 521, the water level drops, and the drainage flow velocity also drops. Therefore, in the pink slime suppression step S3 (replacement process), there is a risk that methylobacterium in the residual water is maintained in a state of being attached to the floor surface, resulting in poor replacement. Therefore, in the pink slime suppression step S3 (replacement process), even when the amount of water sprinkled per unit time is reduced, the amount of water sprinkled per unit area of the floor surface of the washroom floor 520 is increased to replace the skin. It is possible to effectively prevent the leftovers from occurring.

Further, the control unit 30 controls the nozzle unit 10a, which is a cleaning means, so that the total amount of water sprinkled in the pink slime suppression step S3 is larger than the total amount of water sprinkled in the black mold suppressing step S1. Is preferable.

The cheapest and most reliable control mode is to generate wash water that does not contain methylobacterium slowly and with high accuracy, sprinkle a small amount of water slowly, and increase the total amount of water sprinkled on the whole. Can be prevented.

Further, the nozzle portion 10a, which is a cleaning means, is provided on one side of the bathroom 500 to sequentially clean the washing place floor 520 while rotating, and the control unit 30 rotates the nozzle portion 10a, which is a cleaning means. In addition, the control unit 30 is configured to control the rotation speed, and the rotation speed of the nozzle unit 10a in the pink slime suppression step S3 is smaller than the rotation speed of the nozzle unit 10a in the black mold suppressing step S1. As described above, it is preferable that the nozzle portion 10a is controlled.

In other words, the watering for removing keratin in the black mold suppressing step S1 sprinkles a lot of vigorous water and increases the rotation speed of the nozzle portion 10a, which is a cleaning means, to reduce the drainage flow rate and the drainage flow velocity. It is desirable to surely prevent the reattachment of the horny substance to the floor surface, which tends to occur with the decrease, and the replacement with the cleaning water containing no bacteria in the pink slime suppression step S3 does not scatter a small amount of washing water. It is desirable to sprinkle the water slowly and reduce the rotation speed of the cleaning means so that the replacement residue does not occur due to the decrease in the water level due to the decrease in the amount of water.

<Changes according to the situation of watering control>
The cleaning device 100 of the present embodiment is a cleaning device for a bathroom washing place floor that constitutes a washing place of a bathroom 500 and cleans a washing place floor 520 having a drain port 521, and is a washing means for sprinkling washing water on the washing place floor 520. The nozzle unit 10a is provided with a control unit 30 for controlling the nozzle unit 10a. Then, the control unit 30 controls the nozzle unit 10a to sprinkle the washing water so that the keratin that is the cause of the black mold remaining on the washing place floor 520 is discharged from the washing place floor 520 to the drain port 521. The suppression step S1 and the pink slime suppression step S3 in which the washing water is sprinkled so that the residual water containing the methylobacterium remaining on the washing place floor 520 is replaced with the washing water from which the methylobacterium has been removed. implement.
Further, the control unit 30 of the present embodiment has an execution condition changing means 30a for changing the watering of the washing place floor 520 in at least one of the black mold suppressing step S1 and the pink slime suppressing step S3 according to the preset conditions. (See Fig. 3).

In developing a cleaning technique for suppressing mold in the bathroom 500, the inventor of the present invention was able to obtain knowledge on advance measures rather than a technique for sterilizing the generated mold. This can suppress the growth of mold for an extremely long period of time by using simple washing water such as water without using a high-concentration disinfectant or the like and in a short time.
When water, water from which bacteria have been removed, or low-concentration sterilizing water is used as washing water, if black mold or pink slime is generated, it cannot be sterilized by sprinkling the washing water. The growth of black mold and pink slime cannot be stopped. Therefore, it is important how to prevent black mold and pink slime from being generated.
More specifically, it is possible to remove dead skin cells with water, but if there is a lot of dead skin cells or if the dead skin cells are dry and stick to the floor, the dead skin cells will be removed. It is difficult to remove and may remain. This causes black mold. In addition, once pink slime is generated, it is covered with mucous membranes, so it is difficult to remove it with water, and it is necessary to use offal with high bactericidal performance.
Therefore, it is preferable to provide the execution condition changing means 30a, set the conditions according to the risk of mold generation in advance, and carefully change the sprinkling control of each process S1 and S3 according to the situation. be. As a result, we have succeeded in dramatically suppressing the generation of mold and pink slime compared to those that perform manual control or constant (fixed) control.

For example, the preset conditions are conditions based on the leaving time from the bathing to the start of washing.
If the leaving time from bathing to the start of washing is long, the keratin will dry out, and the thin keratin will firmly adhere to the floor surface. Methylobacterium in water also adheres to the washing floor 520 by drying. When the keratin is stuck to the washing floor 520, it is necessary to take measures to improve the keratin removal performance.
Therefore, for example, it is judged that the longer the leaving time is, the more the drying progresses and the sticking progresses, and if the leaving time is short, the sticking does not progress so much. It is preferable to carry out. This makes it possible to improve both water saving and removability.

Alternatively, for example, the preset conditions are conditions based on any of bathroom temperature, humidity, and timing.
The higher the temperature, the faster the keratin dries, and the more likely it is that sticking will occur. In addition, the higher the humidity, the more intense the growth of mold and the like. Information on temperature and humidity may be estimated based on time (seasonal) information in addition to using these measurement results. By adopting controls corresponding to these, it is possible to suppress the finally generation of unpleasant substances such as mold and pink slime in the bathroom 500 for a long period of time.

Alternatively, for example, the preset conditions are conditions based on the usage period of the bathroom 500.
By using the washing place for many years, scratches and irregularities are formed on the washing place floor 520, and keratin and pink slime are easily adhered. In addition, there is a growing concern that keratin and pink slime are likely to remain on the floor surface due to deterioration of drainage due to adhesion of dirt and deterioration of the coating. Therefore, it is preferable to adopt a cleaning control according to the state of the bathroom 500 that changes with aging. If the aging correction is performed according to the usage period of the bathroom 500, the effect of the present invention can be enhanced while the structure is simple and not bothersome.

Alternatively, for example, the preset condition is a condition based on the number of bathers.
As the number of bathers increases, the amount of keratin increases and the amount of water used increases, so the amount of residual methylobacterium also increases. If cleaning control suitable for the number of bathers is adopted, it is possible to achieve optimum control of black mold and pink slime while maintaining water saving.

Further, the execution condition changing means 30a has the execution time of the steps S1 and S3 and the washing water of the steps S1 and S3 in at least one of the black mold suppressing step S1 and the pink slime suppressing step S3 according to the preset conditions. Total amount of sprinkled water per unit area, water force of wash water in steps S1 and S2, water temperature of wash water in steps S1 and S3, and dichloric acid when the wash water in steps S1 and S3 contains dichloric acid. It is preferable that at least one of the concentrations is changed.
When removing dead skin cells or replacing with washing water that does not contain methylobacterium, at least one of the water volume, water vigor, water temperature, and sterilization concentration changes depending on the usage conditions of the bathroom 500, so the washing strength can be changed. Optimal cleaning can be achieved for this condition.

In particular, the execution condition changing means 30a changes the total amount of sprinkled water per unit area of the washing water in each of the steps S1 and S3 in both the black mold suppressing step S1 and the pink slime suppressing step S3 according to the preset conditions. It is preferable that the product is designed to be used.
For example, as a countermeasure against floor sticking due to drying of keratin and methylobacterium, it is desirable to take such measures because it is possible to re-soak the keratin with water, and to wash water that does not contain methylobacterium. Regarding replacement, it is desirable to increase the certainty of replacement by increasing the amount of sprinkled water. Therefore, by changing the total amount of water sprinkled per unit area of the washing water in each of the steps S1 and S3, the factors that cause black mold and pink slime can be reliably removed at low cost.

Further, the control unit 30 of the present embodiment further has a manual changing means 30b for changing the watering of the washing place floor 520 in at least one of the black mold suppressing step S1 and the pink slime suppressing step S3 according to the input condition by the user (Fig.). 3). The manual changing means 30b is connected to the operation unit 35 (see FIG. 1).
The washroom floor 520 can last a long time in a "clean state" even by the automatic control based on the preset conditions as described above. However, in order to be able to respond to individual evaluation values for "clean condition", variations in usage conditions (harshness), and requests to keep the condition even more "clean" than usual when visiting customers. If the manual changing means 30b is provided so that the control content can be manually adjusted according to the input condition by the user, the user's satisfaction and usability can be further improved.

In addition, the control unit 30 has a proactive control consisting of exfoliation as a proactive measure and replacement sprinkling to generate and sprinkle water containing no methylobacterium, and mold or pink slime generated on the floor surface of the washing place floor 520. It is preferable to be able to carry out both post-mortem control and post-mortem sterilization.
Not only the proactive control that makes the "clean state" of the bathroom floor 520 of the bathroom 500 last longer by removing the cause of mold and pink slime, but also the conventional post-responder control that can deal with the generated mold and pink slime. By combining them, the "clean state" of the washroom floor 520 of the bathroom 500 can be more reliably maintained for a long period of time, and the labor of cleaning can be reduced considerably.

In this case, the control unit 30 executes the pre-response control in the predetermined first cycle, and executes the post-response control in the predetermined second cycle longer than the first cycle. Is more preferable.
In this way, by adjusting so as to optimize the frequency of each of the pre-response control and the post-response control, it is possible to maintain the "clean state" for a longer period of time while optimizing the running cost. ..

Further, it is preferable that the control unit 30 can freely perform the post-response control irregularly according to the input condition by the user.
The washroom floor 520 can last a long time in a "clean state" even by the automatic control based on the preset conditions as described above. However, it is difficult to reliably prevent the growth of mold under any circumstances. For example, when mold is generated due to the accumulation of nutrients other than keratin, methylobacterium is scattered, or water that is not replacement water is sprinkled after replacement, pink slime is generated. If black mold or pink slime develops, they cannot be removed with water or wash water that does not contain methylobacterium. Therefore, for example, if a manual mode for cleaning with improved sterilization is provided, in addition to the long-lasting function of "clean state", the function of sterilizing the generated mold can be implemented, and the user's satisfaction level. Is further enhanced.

<Effect of pink slime suppression process>
The cleaning device 100 of the present embodiment is a cleaning device for a bathroom washing place floor that constitutes a washing place of a bathroom 500 and cleans a washing place floor 520 having a drain port 521, and is a washing means for sprinkling washing water on the washing place floor 520. The nozzle unit 10a is provided with a control unit 30 for controlling the nozzle unit 10a. Then, the control unit 30 controls the nozzle unit 10a so that the residual water containing methylobacterium remaining on the washroom floor 520 is replaced with the wash water from which the methylobacterium has been removed. The pink slime suppression step S3 for sprinkling water is carried out.

According to the present embodiment, by carrying out the pink slime suppression step S3 for removing the residual water containing methylobacterium remaining on the washing place floor 520, the bacteria on the washing place floor 520, particularly the methylobacterium,. Can be remarkably reduced, and by extension, the generation of mold on the washroom floor 520 can be remarkably suppressed.

In particular, in the pink slime suppression step S3, the residual water containing methylobacterium remaining on the washing place floor 520 is replaced with washing water containing no methylobacterium produced by removing the methylobacterium in tap water. As a result, methylobacterium on the washroom floor 520 can be significantly reduced without the use of high-concentration, immediate-acting sterilizing water. Then, instead of sterilizing the bacteria in the bathroom 500, it does not mean that all the nutrient sources are killed or removed, but only a small amount of methylobacterium needs to be killed, so that the water is sprinkled in the pink slime suppression step S3. The wash water does not have to be a high-concentration, immediate-acting sterilizing water as previously considered, and the running cost can be kept low.

It can be said that this embodiment is not a post-response technique of sterilizing pink slime after it is generated, but a proactive technique of hitting the source of pink slime in advance. According to the cleaning device 100 of the present embodiment, regarding the pink slime generated in the bathroom 500, the customer satisfaction of 99% or more can be achieved by this suppression.

The inventor has identified a causative substance that causes the generation of pink slime in the bathroom 500 (discovery). That is, the inventor of the present invention has found that the cause of pink slime generation is a trace amount of methylobacterium in tap water, which grows on the washing floor 520 to generate pink slime. And, by being able to identify this, it became possible to develop a technique to remove the causative substance of pink slime without killing it after it occurs. As a cleaning technique that does not require high concentration of sterilized water or long-term sterilization, the cleaning device 100 of the present embodiment has been established.

The cleaning means is from tap water in the flow path upstream of the nozzle portion 10a, in addition to the nozzle portion 10a for discharging tap water as the first cleaning water and low-concentration sterilizing water as the second cleaning water. It has a low-concentration sterilized water generator 20 including a removal device 20b for removing methylobacterium. The second washing water is water in which methylobacterium is not present in the water before it is sprinkled on the washing place floor 520 by removing the methylobacterium.

In order to kill the methylobacterium in the water sprinkled on the large washroom floor 520, a large amount of sterilized water is required for a reliable attack on the methylobacterium. In addition, when an attack defect occurs, it causes the generation of pink slime. Therefore, a removal device is provided in the flow path upstream of the nozzle portion 10a, and the removal device removes methylobacterium before watering, and the residual water remaining on the washing floor 520 is water in which methylobacterium does not exist. By adopting the configuration of replacing with, it is possible to surely remove methylobacterium. As a result, the generation of pink slime due to poor death can be prevented with a smaller amount of water and in a shorter time.

Further, in the bathroom 500 of the present embodiment, the washing floor 520 is formed so as to be inclined toward the drain port 521, and the nozzle portion 10a as a cleaning means is installed on one side in the bathroom 500. It is arranged on the counter 530 side and is arranged so as to be on the upstream side in the drainage flow flowing from the drainage port 521 toward the drainage port 521, and the nozzle portion 10a as a cleaning means is arranged on the washing place floor. The control unit 30 is rotated so as to sequentially sprinkle water from the upstream side of the 520 toward the drain port 521, and the control unit 30 is sprinkled first from the nozzle unit 10a in the pink slime suppression step S3 to 520 the washing place floor. The rotation speed of the nozzle portion 10a is changed so that the subsequent washing water will land on the upstream side of the washing water flowing through the bathroom.

As a result, the landed water becomes a drainage flow and flows to the drainage port 521 along the inclination of the washing place floor 520, and the rotation of the nozzle portion 10a causes the water to be sequentially sprinkled toward the drainage port 521. Together, it makes it easier to drive the wash water that has landed on the washroom floor 520 into the drainage port 521, and makes it easier to replace the entire floor surface of the washroom floor 520.

Further, the washing water sprinkled earlier lands on the washing place floor 520 and then flows along the slope of the washing place floor 520 while forming a water film. Since the water film of the washing water flowing through the washing place floor 520 heads toward the drain port 521 while spreading, the water film is torn off, and there are places where the washing water passes and places where the washing water does not pass. Here, by changing the rotation speed so that the washing water afterwards lands on the upstream side of the washing water that has been sprinkled first and flowing through the washing place floor 520, the washing place floor 520 that has landed earlier The water film is replenished with the washing water to be sprinkled later, and the water film is prevented from being torn. As a result, the entire surface of the washing place floor 520 can be more reliably replaced with washing water.
Furthermore, even if the state of the water film can be maintained, if the subsequent wash water lands on the downstream side of the previously sprinkled wash water, water splashes at the time of landing will occur. Then, the water containing methylobacterium is scattered, and the water containing the bacteria is scattered in the replaced region even though the water containing the bacteria is replaced with the washing water. Therefore, it is possible to prevent the scattering of water containing corynebacterium at the time of landing by landing the water on the upstream side of the washing water which has been sprinkled first to form a water film.

Further, it is preferable that at least a part of the washing water sprinkled from the nozzle portion 10a lands on the bathroom walls 541 to 544 rising upward from the washing place floor 520.

Water containing methylobacterium also adheres to the bathroom walls 541 to 544 by the user's bathing action. If it adheres to the bathroom walls 541 to 544 for a long time, pink slime will be generated on the bathroom walls 541 to 544. Therefore, by landing at least a part of the washing water on the bathroom walls 541 to 544, the bathroom walls 541 to 544 can also be replaced with water containing no methylobacterium. Further, since the washing water after flowing through the bathroom walls 541 to 544 also flows at the connection portion between the bathroom walls 541 to 544 and the washing place floor 520, reliable replacement can be performed. That is, it is possible to reliably replace the corners between the walls of the bathroom walls 541 to 544 and the washroom floor 520.

Further, it is preferable that the nozzle portion 10a is configured to sprinkle water from the wall surface on the upper side in the drainage flow flowing toward the drainage port 521.

By sprinkling water from the wall surface on the upper side of the slope of the washing place floor 520, a flow of the washing water reflected by the wall surface toward the drain port 521 is formed. As a result, the water containing methylobacterium existing on the washing place floor 520 can be efficiently drained to the drain port 521 by the flow of the washing water reflected by the wall surface. As a result, it is possible to prevent water containing methylobacterium from staying in the lower part of the wall surface of the bathroom wall 541 to 544, and it is possible to effectively prevent the generation of pink slime.

Further, it is preferable that the control unit 30 rotates the nozzle unit 10a, which is a cleaning means, at a speed slower than the speed of the drainage flow flowing on the slope of the washing place floor 520.

The washing water reflected by the wall surface travels on the washing floor 520 while forming a water film, but as it progresses, the water film spreads and the water film is torn off, where the washing water passes. There will be places where it is not. Therefore, by devising the rotation speed, the water film can be prevented from being torn off, and the entire washing place floor 520 can be more reliably replaced with washing water.

Further, it is preferable that the washing water landing on the wall surface near the counter 530 is landed at a position above the washing water landing on the wall surface far from the counter 530.

The water that lands on the floor 520 of the washing place near the nozzle portion 10a, which is the cleaning means, has a high velocity component in the water discharge (injection) direction by the nozzle portion 10a, which is the cleaning means, and tends to move further toward the wall surface side. .. Proceeding toward the wall surface, methylobacterium gathers on the wall surface side, increasing the possibility of pink slime. Therefore, by landing water at a high position on the wall surface, the energy toward the drain port 521 is increased, and the water flowing after landing on the wall surface and the water that had landed earlier are merged and landed first. It is effective to prevent the water that had been used from going to the wall surface.
If water is landed at a high position on the wall surface far from the nozzle portion 10a, which is the cleaning means, the water may pass through the ridgeline of the slope of the floor surface of the washing place floor 520. That is, backflow may occur and the water containing bacteria may reach the region where the replacement with water containing no bacteria has been completed. Therefore, for the wall surface far from the nozzle portion 10a, which is the cleaning means, the water landing at a lower position cancels out the velocity components of the water landing on the floor surface and the water from the wall surface. It is possible to effectively suppress the occurrence of such backflow.

It is preferable that a storage unit for storing the appliances of the bathroom 500 is further provided, and the storage unit is provided above the floor surface of the washing place floor 520.

When the equipment of the bathroom 500 is placed on the floor surface of the washing place floor 520, the drainage flow of the washing water toward the drainage port 521 formed on the wall surface may be obstructed, and the entire floor surface of the washing place floor 520 may be obstructed. It may not be possible to replace it. Therefore, by providing a storage unit for storing the appliances of the bathroom 500 above the floor surface of the washing place floor 520, it is possible to prevent the appliances of the bathroom 500 from being placed on the floor surface of the washing place floor 520, and from the wall surface. The entire surface of the washing floor 520 can be replaced without obstructing the drainage flow of the washing water.

In this case, it is more preferable that the control unit 30 controls the nozzle unit 10a, which is a cleaning means, to execute the pink slime suppression step S3 after executing the centralized watering step for the storage unit.

When the centralized watering step for the storage portion is executed after the pink slime suppression step S3 is executed, the washing water in the centralized watering step passes through the area after the washing place floor 520 is replaced with the washing water, and the washing place floor. The replacement of 520 may eventually end in an inadequate state. Therefore, by executing the pink slime suppression step S3 after executing the centralized watering step for the storage portion, it is possible to prevent the occurrence of a region where the replacement is insufficient.

Further, regarding the effect of the pink slime suppressing step S3, it is preferable that the surface of the washroom floor 520 is hydrophilically coated.
In this case, even if methylobacterium adheres to the washing place floor 520, the high affinity between the washing place floor 520 and water works extremely effectively in removing the bacteria. That is, even with a small amount of wash water and a low wash water force, pink slime suppression (replacement with water containing no methylobacterium) can be achieved quickly and sufficiently.

Further, regarding the effect of the pink slime suppressing step S3, it is preferable that the washing place floor 520 is formed with a groove 522 extending in a direction non-parallel to the direction in which the washing water lands (FIG. 30 (b). )reference).
In this case, when the sprinkled washing water collides with the washing place floor 520 or flows on the washing place floor 520, the washing water collides with the groove 522 and a vertical wave (pulsation of water) is formed. By disturbing the flow of water in this way, methylobacterium is easily peeled off from the washing floor 520. Further, when the washing water spreads and flows on the washing place floor 520, the reattachment of methylobacterium to the floor is suppressed by the wave. As a result, methylobacterium can be reliably removed from the floor even if the water force and the amount of the washed water to be sprinkled are small.

<Variations of low-concentration sterilized water generation>
The cleaning device 100 of the present embodiment is a cleaning device for a bathroom washing place floor that constitutes a washing place of a bathroom 500 and cleans a washing place floor 520 having a drain port 521, and is a washing means for sprinkling washing water on the washing place floor 520. The nozzle unit 10a is provided with a control unit 30 for controlling the nozzle unit 10a. Then, the control unit 30 controls the nozzle unit 10a so that the residual water containing methylobacterium remaining on the washroom floor 520 is replaced with the wash water from which the methylobacterium has been removed. The pink slime suppression step S3 for sprinkling water is carried out.

Then, the cleaning means includes water in the flow path upstream of the nozzle portion 10a, in addition to the nozzle portion 10a for discharging tap water as the first cleaning water and low-concentration sterilizing water as the second cleaning water. It has a low-concentration sterilized water generator 20 including a removing device 20b for removing methylobacterium from the water.
More specifically, as shown in FIG. 14, the downstream portion of the low-concentration sterilized water generation unit 20 of the present embodiment is the removal device 20b, which is the upstream portion of the low-concentration sterilized water generation unit 20. By using the hypochlorous acid generated in the hypochlorous acid generation tank 20a, which is an example of the bactericidal agent generation device, to kill the methylobacterium in tap water, wash water containing no methylobacterium is generated. It is designed to do.
The removing device 20b is a raw water containing hypochlorous acid (an example of a sterilizing agent) generated in a hypochlorous acid generation tank 20a, which is an example of a sterilizing agent generating device upstream of the low-concentration sterilizing water generating unit 20. It has a dispersion unit 20c that kills methylobacterium in raw water by dispersing the concentration and produces wash water containing no methylobacterium. Specifically, the dispersion portion 20c is formed by the partition walls 20d arranged alternately. In addition, in FIG. 14, 20e is an electrode and 20f is an outer case.

Here, as shown in FIG. 15, the removing device 20b may be configured separately from the hypochlorous acid generation tank 20a. In this case, the removing device 20b is provided between the hypochlorous acid generation tank 20a and the nozzle portion 10a.

Further, FIG. 16 is a schematic diagram showing a first alternative example of the low-concentration sterilized water generation unit. In the case of FIG. 16, instead of adopting the hypochlorous acid generation tank 20a and the removal device 20b, the coil 21 for killing the methylobacterium in the tap water by applying heat to the tap water flowing in the pipe is used. It is provided. Even with such a configuration, it is possible to kill methylobacterium in raw water and generate wash water containing no methylobacterium.

Further, FIG. 17 is a schematic diagram showing a second alternative example of the low-concentration sterilized water generation unit. In the case of FIG. 17, instead of adopting the hypochlorite generation tank 20a and the removal device 20b, the methirobacterium in the tap water is killed by irradiating the tap water flowing in the pipe having ultraviolet transmission with ultraviolet rays. An ultraviolet lamp 22 for making the water supply is provided. Even with such a configuration, it is possible to kill methylobacterium in raw water and generate wash water containing no methylobacterium.

Further, FIG. 18 is a schematic view showing a first modification of the low-concentration sterilized water generation unit. In the case of FIG. 18, in addition to the hypochlorous acid generation tank 20a of FIG. 3, the coil 21 of FIG. 16 is also provided, and a salt addition device 23 for adding salt is added to the hypochlorous acid generation tank 20a. .. According to such a configuration, it is possible to kill methylobacterium in raw water and produce sterilizing water that does not contain methylobacterium and has a desired bactericidal action.

Regardless of which configuration of FIGS. 3 and 16-18 is adopted, removal is carried out at the stage of bacteria called methylobacterium instead of pink slime, and methylobacterium is removed from the water before watering. Therefore, it is possible to efficiently generate wash water containing no methylobacterium.

Of these, when the configuration of FIG. 3 is adopted, that is, the removal device 20b arranged in the flow path upstream of the nozzle portion 10a and the hypochlorous acid arranged in the flow path upstream of the removal device 20b. When a chlorinate generation tank (an example of a disinfectant generation device) 20a is used, even with extremely low concentration hypochlorous acid as long as it has an immediate effect, it is very inexpensive and surely on the floor of the washing place. It is possible to suppress the pink slime that may occur.

The removal device 20b of the present embodiment has a low sterilizing ability remaining in the first range shorter than the total length of the bathroom 500 even after the washing water after killing the methylobacterium is discharged from the nozzle portion 10a. It is designed to generate sterilizing water as washing water.
As a result, in the pink slime suppression step S3, sterilization and replacement are performed in the first range of the washroom floor 520, and only replacement is performed in the second range outside the first range of the washroom floor 520. It can be realized that it will be done.
By replacing the residual water with wash water that does not contain methylobacterium, the generation of pink slime can be dramatically improved and the clean state can be maintained for a long time. However, in the bathroom 500, washing and watering of a bucket are also performed, so that it is difficult to maintain a state in which methylobacterium is completely absent. Once pink slime is generated by methylobacterium, the pink slime cannot be removed with non-bactericidal wash water that does not contain methylobacterium. Removal with a disinfectant) is required.
On the other hand, if it is killed at the stage of a bacterium called methylobacterium, the deterioration of the fungicide is low, and it is easy to maintain a low concentration of fungicide even after killing. It is not difficult to produce a disinfectant, and if it has a low concentration of disinfectant, it has little effect on the equipment.
Therefore, in the present embodiment, as a preferred embodiment, it is possible to safely and easily realize water sprinkling in which the bactericidal property is ensured in the first range, instead of maintaining the bactericidal property of the entire washing place floor 520. ing. In this range, in addition to maintaining "cleanness" by replacing the residual water, it is possible to maintain bactericidal properties to remove or generate methylobacterium in the water sprinkled after the replacement. Attack the pink slime that has been sterilized. As a result, "cleanness" can be further maintained, and the labor of cleaning can be significantly reduced.

Further, the nozzle portion 10a of the present embodiment is arranged on the counter 530 side of the bathroom 500, and the counter 530 and the drain port 521 are included in the first range.
As described above, in the first range, in addition to maintaining "cleanness" by substitution, bactericidal property can also be ensured. Therefore, by devising so that the counter 530 and the drainage port 521 are located within the first range, bactericidal properties can be ensured in the portion where methylobacterium is likely to remain and there is a high concern about the generation of pink slime. That is, the maximum effect can be obtained in the bathroom 500 by devising a simple arrangement.
FIG. 19 is a schematic view showing an example of such a sterilization region and a replacement region. In this example, approximately half of the counter 530 side (nozzle portion 10a side) of the washing place floor 520 is the sterilization region, and approximately half of the side far from the counter 530 (and the nozzle portion 10a) is the replacement region. ing.

In relation to the bactericidal effect, the control unit 30 can sprinkle the cleaning water so that the cleaning water directly reaches the drain port 521 via the air by controlling the nozzle unit 10a which is the cleaning means. It is more preferable that the structure is as follows.
When the washing water reaches the drain port 521 via the washing place floor 520, the sterilizing concentration of the washing water may be lowered due to the contact with the organic substance or the residual water, and the sterilizing effect may not be expected. If you want to avoid this, if you adopt a control that directly lands on the drainage port 521 via the air, you can more reliably replace the drainage port 521 with a high risk of pink slime generation with a simple configuration. Can be done.
In this case, it is more preferable that the nozzle portion 10a is arranged on the counter 530 side and close to the drain port 521.
Even if the bactericidal agent passes through the air, the bactericidal concentration decreases due to contact with air, so that the concentration may become low and the effect may not be expected. Therefore, by arranging the nozzle portion 10a unevenly near the drain port 521, it is possible to suppress the decrease in the bactericidal concentration with a simple configuration, that is, it is not necessary to increase the concentration of the bactericidal agent, that is, the methylobacteria. The sterilizing agent after sterilizing the um can realize the sterilization of pink slime for the drainage port 521.

Further, in the pink slime suppressing step S3, in the first range, the washing water is sprinkled so as to land on the lower part of the wall surface of the bathroom walls 541 to 544 rising from around the floor surface of the washing place floor 520. Moreover, it is preferable that the water is sprinkled so that the height of water landing on the wall surface on the counter 530 side is the highest.
Around the counter 530, there is a lot of water scattered by bathers and showers, and in particular, there is a high risk of pink slime being generated on the wall surface of the bathroom wall 542 on the counter 530 side. Therefore, by landing the replacement water on the wall surface on the counter 530 side to ensure the replacement, and further maintaining the bactericidal action in the region where the risk is high, the generation of pink slime is more reliably suppressed. , You can make the "clean state" last longer.

Further, the nozzle portion 10a of the present embodiment is arranged below the counter 530.
The lower part of the counter 530 has the largest amount of scattered water, and the wall surface below the counter 530 has the highest risk of pink slime generation. By arranging the nozzle portion 10a below the counter 530, such a risk can be significantly reduced.

Further, the control unit 30 of the present embodiment can change the first range by controlling the removal device 20b.
By replacing with wash water in the pink slime suppression step S3, it is possible to maintain a clean state for a long time. Watering cannot be used. In order to make the entire area of the washing place floor 520 the first range where the bactericidal action is secured, it is necessary to increase the concentration, waste may occur, and there is a concern of equipment corrosion and the like. Therefore, it is beneficial to make the first range variable, that is, to adjust the concentration of the bactericidal component of the washing water to provide a flexible response to the diverse needs of the user. As a result, it is possible to reduce the problems of the replacement technique while achieving practically useful effects such as reduction of cleaning labor, maintenance of equipment and shortening of cleaning time due to a decrease in the frequency of high concentration.
Specifically, according to the control unit 30 of the present embodiment, by controlling the removal device 20b, the first range of the washroom floor 520 is set to zero, and the entire floor surface of the washroom floor 520 is set to the second range. It is also possible to carry out a mode in which the second range of the washing place floor 520 is set to zero and the entire floor surface of the washing place floor 520 is set to the first range.

Further, the low-concentration sterilizing water generation unit 20 (an example of the sterilizing agent generating device) of the present embodiment is hypochlorous acid by decomposing chlorine in tap water with an electrode which is a sterilizing component generating means as a quick-acting sterilizing agent. The removal device 20b is designed to generate acid, and the removing device 20b uses the generated hypochlorous acid to kill methirobacterium in tap water to generate methirobacterium-free wash water. It has become like.
As described above, if tap water can be used, it is convenient to use chlorine in tap water to generate low-concentration but immediate-acting hypochlorous acid. Hypochlorous acid has a large air attenuation, so the second range becomes large, but if a removal device 20b for removing methylobacterium is placed in the vicinity, the methylobacterium will be killed. It is practically useful because it can easily secure sufficient bactericidal properties.

<Effective chlorine concentration in low-concentration sterilized water>
In the present embodiment, as described above, hypochlorous acid is produced by electrolyzing tap water having an effective chlorine concentration of usually 0.1 to 0.3 ppm, and the hypochlorous acid is used in tap water. By killing the methylobacterium in the water, wash water containing no methylobacterium is produced. As a result, the low-concentration sterilizing water generation unit 20 can efficiently generate low-concentration sterilizing water (an example of washing water containing no methylobacterium) from tap water without complicating the flow path configuration. ing.
The effective chlorine concentration of the washing water inside the removing device 20b, particularly in the outlet region, is adjusted to 0.4 to 1.0 ppm. This is the present invention that the washing water effective in the pink slime suppression step S3 is the washing water having an effective chlorine concentration of 0.4 to 1.0 ppm inside the removing device 20b, particularly in the outlet region. It is based on the knowledge of the person.

In order to remove pink slime once generated on the washing floor 520, it is necessary to use sterilized water having a high effective chlorine concentration. The concentration required to kill pink slime is 1 ppm or more. However, in the present embodiment, the concentration of the chlorine component contained in the raw water (0.1 ppm in the area where the effective chlorine concentration is low, the average value of the effective chlorine concentration in tap water nationwide is 0.3 ppm) is slightly increased. Therefore, the methylobacterium, which is the cause of the generation of pink slime, can be removed only by setting the concentration to 0.4 to 1.0 ppm.

As described above with reference to FIG. 14, the removal device 20b of the present embodiment was generated in the hypochlorous acid generation tank 20a, which is an example of the sterilizer generation device upstream of the low-concentration sterilizing water generation unit 20. It has a dispersion part 20c that kills methylobacterium in raw water by dispersing the concentration of raw water containing hypochlorous acid (an example of a bactericidal agent) and produces wash water containing no methylobacterium. are doing.
By effectively dispersing hypochlorous acid that can be locally produced in the hypochlorous acid generation tank 20a in the raw water in the dispersion unit 20c, even hypochlorous acid having a low effective chlorine concentration can be further dispersed. It can be reliably reacted with methylobacterium, and the methylobacterium in the raw water can be effectively removed.

Further, as described above, the removing device 20b of the present embodiment has a sterilizing ability in the first range shorter than the total length of the bathroom 500 even after the washing water after killing the methylobacterium is discharged from the nozzle portion 10a. It has come to generate sterilizing water as washing water, such as residual water.
As a result, in the pink slime suppression step S3, sterilization and replacement are performed in the first range of the washroom floor 520, and only replacement is performed in the second range outside the first range of the washroom floor 520. It can be realized that it will be done.
In the case of the present embodiment, the effective chlorine concentration of the washing water after landing on the first range of the washing place floor 520 is preferably 0.4 ppm or more.
By replacing the residual water with wash water that does not contain methylobacterium, the generation of pink slime can be dramatically improved and the clean state can be maintained for a long time. However, in the bathroom 500, washing and watering of a bucket are also performed, so that it is difficult to maintain a state in which methylobacterium is completely absent. Once pink slime is generated by methylobacterium, the pink slime cannot be removed with non-bactericidal wash water that does not contain methylobacterium. Removal with a disinfectant) is required.
On the other hand, if it is killed at the stage of a bacterium called methylobacterium, the deterioration of the fungicide is low, and it is easy to maintain a low concentration of fungicide even after killing. It is not difficult to produce a disinfectant, and if it has a low concentration of disinfectant, it has little effect on the equipment.
Therefore, in the present embodiment, as a preferred embodiment, it is possible to safely and easily realize water sprinkling in which the bactericidal property is ensured in the first range, instead of maintaining the bactericidal property of the entire washing place floor 520. ing. In this range, in addition to maintaining "cleanness" by replacing the residual water, it is possible to maintain bactericidal properties to remove or generate methylobacterium in the water sprinkled after the replacement. Attack the pink slime that has been sterilized. As a result, "cleanness" can be further maintained, and the labor of cleaning can be significantly reduced.

Here, it is more preferable that the effective chlorine concentration of the washing water after landing on the first range of the washing place floor 520 is 0.8 ppm or more.
One of the items with high customer demand for the bathroom 500 is measures against black mold. Among them, there is a particularly high demand for suppressing the generation of black mold in the drainage port 521 and the trap, which tend to collect and store the keratin that causes black mold after the user takes a bath. By setting the effective chlorine concentration of the washing water landing in the first range including the counter 530 and the drain port 521 to 0.8 ppm or more, it is possible to remove black mold in addition to methylobacterium.

Further, it is more preferable that the nozzle portion 10a, which is a cleaning means, has a high concentration means (for example, a salt addition device 23) for increasing the effective chlorine concentration in the cleaning water generated by the removing device 20b (see FIG. 18). ). In this case, the control unit 30 can carry out a high concentration removing step such that sterilization and replacement are performed on the entire floor surface of the washing place floor 520 by controlling the high concentration means. In this case, it is preferable that the pink slime suppressing step S3 and the high concentration removing step are selectively carried out.
In a bathroom with a large number of users (many bacteria that cause stains) or a bathroom that has not been used for a long time, there is a possibility that methylobacterium and black mold are present in the entire washroom floor 520 (black mold). Is floating in the air). Since the washing water sprinkled in the pink slime suppression step S3 has a low effective chlorine concentration, methylobacterium and black mold cannot be sterilized in such a situation. Therefore, in order to deal with such a situation, by preparing a high concentration removal process, it is possible to sterilize methylobacterium and black mold in bathrooms with many users or bathrooms that have not been used for a long time. Can be done.

The following three graphs are further incorporated to explain the above effects.
FIG. 20 is a graph showing the relationship between the sterilization time of black mold and pink slime after occurrence in the bathroom and the amount of water sprayed for each effective chlorine concentration. From this, it can be confirmed that the sterilization time of black mold and pink slime and the amount of watering are in a trade-off relationship with each other. It can also be confirmed that the higher the effective chlorine concentration, the shorter the sterilization time for black mold and pink slime, or the smaller the amount of water sprinkled.
However, even if the effective chlorine concentration after watering is set to 1 ppm, the amount of water sprayed cannot be significantly reduced, that is, a corresponding amount of water is still required.
It is very effective in terms of water saving to carry out the pink slime suppression step S3 using the washing water in which the bacteria before watering have been killed as in the present embodiment.
FIG. 21 is a graph showing the concentration attenuation after watering for each effective chlorine concentration. As shown in FIG. 21, even if the effective chlorine concentration before watering is 1 ppm, the effective chlorine concentration after water landing is greatly reduced due to the concentration attenuation of the watering in the bathroom.
When the washing water is blown over the entire bathroom 500 (sprinkling distance is about 2 m) and an attempt is made to achieve an effective chlorine concentration of 0.4 ppm after landing in the entire bathroom 500, as shown in FIG. 21, the effective chlorine at the time of spouting water is achieved. The concentration needs to be about 2 ppm. However, it is not easy to achieve such a high concentration of effective chlorine from the active chlorine component in tap water (a means for increasing the concentration is required).
FIG. 22 is a graph showing the death time of methylobacterium having an effective chlorine concentration. As shown in FIG. 22, when the effective chlorine concentration is 0.4 ppm, Methylobacterium is killed substantially instantaneously. That is, the generation of pink slime can be suppressed by replacing the residual water with the washing water having the concentration concerned by the pretreatment (before attenuation) before watering. (Conversely, it can be said that methylobacterium survives when the effective chlorine concentration is 0.3 ppm.)

<Effect of black mold control process>
The bathroom 500 of the present embodiment has a washroom floor 520 constituting the washroom of the bathroom 500, a drain port 521 provided on the washroom floor 520 for draining residual water on the washroom floor 520, and a periphery of the washroom floor 520. It is provided with a bathroom wall 541 to 544 rising from the bathroom wall, a cleaning means having a nozzle portion 10a for sprinkling cleaning water on the washing floor 520, and a control unit 30 for controlling the nozzle portion 10a of the cleaning means. Then, the control unit 30 controls the nozzle unit 10a to sprinkle the washing water so that the keratin that is the cause of the black mold remaining on the washing place floor 520 is discharged from the washing place floor 520 to the drain port 521. The suppression step S1 is carried out.
Further, the washing water sprinkled from the nozzle portion 10a in the black mold suppressing step S1 removes the keratin of the washing place floor 520, while the removed keratin is deposited around the washing place floor 520 and the corners of the bathroom walls 541 to 544. It is designed to flow so as not to cause it to flow.
According to the present embodiment, by carrying out the black mold suppressing step S1 for removing the keratin that is the cause of the black mold remaining on the washing place floor 520, the keratin on the washing place floor 520 can be remarkably reduced, and eventually the washing place. The generation of mold on the floor 520 can be remarkably suppressed.

When carrying out the black mold suppressing step S1, it is important to strip off the keratin remaining on the washing place floor 520 and completely remove it from the drain port 521. When the removal of the keratin is performed only by watering, it is important that the keratin reaches the drain port 521 without reattaching to the floor surface of the washing place floor 520.
Further, even if the keratin is sprinkled to be removed from the washing place floor 520 and the keratin can be removed, the washing water sprinkled from the nozzle portion 10a is sprinkled in one direction, so that the washing water is sprinkled in one direction. It reaches the corner of a certain washroom floor 520 and the bathroom walls 541 to 544, and the keratin that has been peeled off collides with the corner and accumulates on the corner, so that the generation of black mold on the washroom floor 520 can be suppressed. However, there is a problem that the generation of black mold on the corner cannot be sufficiently suppressed.
According to the cleaning device 100 of the present embodiment, the cleaning water sprinkled from the nozzle portion 10a in the black mold suppressing step S1 removes the keratin of the washing place floor 520, while the removed keratin is removed around the washing place floor 520 and the bathroom wall 541. By flowing so as not to be deposited on the corners of up to 544, it is possible to suppress the generation of black mold not only on the washing floor 520 but also on the corners.

The control unit 30 of the present embodiment further sprinkles washing water to prevent the keratin removed from the washing place floor 520 from reattaching to the washing place floor 520 by controlling the nozzle part 10a. It is preferable that a preventive sprinkling step is carried out.
Even if the keratin is stripped off by the sprinkled washing water, the keratin contained in the washing water may reattach to the washing place floor 520 in the flow process leading to the drain port 521. Therefore, by carrying out a reattachment prevention sprinkling step in which the washing water is further sprinkled in order to prevent the keratin removed from the washing place floor 520 from reattaching to the washing place floor 520, the reattachment of the keratin is more reliable. It can be prevented and keratin can be reliably removed from the washing floor 520.

Further, as shown in FIG. 23, the washing water sprinkled from the nozzle portion 10a in the black mold suppressing step S1 of the present embodiment first contacts the keratin remaining on the washing place floor 520 to wash the keratin on the washing place floor 520. It has a first liquid water for peeling from the washing place floor 520 and a second liquid water for transporting the keratin peeled from the washing place floor 521 to the drain port 521. FIG. 23 is a schematic diagram showing a flow state of the first liquid water (first wave) and the second liquid water (second wave) of the present embodiment.

Even if the keratin is stripped off by the sprinkled washing water, the keratin contained in the washing water is caused by the washing water being diffused in the flow process leading to the drain port 521 and the water level of the washing water being lowered. In particular, it is easy to reattach to the washing place floor 520 in the vicinity of the drain port 521. Therefore, the first liquid water for first contacting the keratin remaining on the washing place floor 520 and peeling the keratin from the washing place floor, and the first for transporting the keratin peeled off from the washing place floor to the drain port 521. 2 It is effective to separate and sprinkle (flow) the liquid water.
Only the first liquid water for stripping the keratin is used, and when trying to prevent the keratin from reattaching to the washing place floor due to the water level drop due to the diffusion of the washing water in the flow process up to the drain port 521, a large amount of washing water is used. It is necessary to sprinkle water all at once to prevent the reattachment of keratin due to the decrease in water level. If the first fluid water and the second fluid water are separated, the first fluid water is sprinkled to remove the keratin, and the second fluid water is sprinkled to carry the exfoliated keratin, the result is less. With the amount of washing water, keratin can be removed from the washing place floor 520 and surely drained to the drain port 521.

Further, in the present embodiment, the first liquid water flows on a predetermined portion of the washing place floor 520, and the second liquid water flows after a predetermined time has elapsed from the arrival of the first liquid water. It is designed to flow on the predetermined portion.
If the first liquid water and the second liquid water are sprinkled at the same time, the purpose of separating and controlling the sprinkling of both is not utilized, but even if the time between the sprinkling of both is too long, the keratin becomes dry. It is not preferable because it is easy to reattach. Therefore, it is effective to appropriately control the time between watering both. In the present embodiment, the first liquid water flows on the predetermined portion of the washing place floor 520, and the second liquid water flows on the predetermined portion after a predetermined time has elapsed from the arrival of the first fluid water. Since it is made to flow, it is possible to reliably prevent the reattachment of keratin with a small amount of washing water, even though it has a simple structure.

Further, in the present embodiment, the flow velocity of the second fluid water toward the drain port 521 on the predetermined portion is faster than the flow velocity of the first fluid water toward the drain port 521, and the second fluid water is drained. By the time it reaches the mouth 521, it merges with the first liquid water.
As the water level approaches the drainage port 521, the keratin becomes more likely to reattach due to the decrease in water level due to the diffusion of the first flowing water. Therefore, rather than controlling the time from the arrival of the first flowing water to the arrival of the second flowing water to be constant at each part of the washing place floor 520, the time is shortened as it approaches the drainage port 521, and further, it reaches the drainage port 521. It is effective to catch up and join them. As a result, the drop in water level due to the diffusion of the first fluidized water can be effectively compensated, and the reattachment of the keratin can be prevented more reliably.

Further, the nozzle portion 10a of the present embodiment is configured to rotate around an axis perpendicular to the washing place floor 520, and the rotation of the nozzle portion 10a is controlled by the control unit 30 to control the rotation of the nozzle portion 10a on the predetermined portion. The flow velocity of the second fluid water toward the drain port 521 is adjusted to be faster than the flow velocity of the first fluid water toward the drain port 521.
That is, by controlling the feeding speed of the rotation of the nozzle portion 10a, the flow speed of the first flowing water toward the drain port 521 and / or the flow speed of the second flowing water toward the drain port 521 can be relatively easily set. It can be controlled, and thus the delay time between the two and the confluence position of the two can be adjusted relatively easily.

Further, in the present embodiment, when the control unit 30 makes the cleaning water land on the region far from the nozzle unit 10a, it is compared with the case where the cleaning water is landed on the region near the nozzle unit 10a. The rotation speed of the nozzle portion 10a is controlled so that the rotation speed of the 10a is low.
As the watering distance increases, the force of the washed water to be sprinkled decreases, so that the speed of the washing water flowing toward the drain port 521 also decreases. In order to compensate for this tendency, the longer the sprinkling distance is, the lower the rotation speed is to increase the amount of sprinkled water. Each can be optimized.

<Effect of watering control from both sides of the drainage port>
The bathroom 500 of the present embodiment has a washroom floor 520 constituting the washroom of the bathroom 500, a drain port 521 provided on the washroom floor 520 for draining residual water on the washroom floor 520, and a periphery of the washroom floor 520. A cleaning means having a bathroom wall 541 to 544 rising from the bathroom wall, a nozzle portion 10a provided on one side of the bathroom 500 and sprinkling cleaning water on the washing floor floor 520 while rotating, and a control for controlling the nozzle portion 10a of the cleaning means. It is provided with a unit 30 and. Then, the control unit 30 controls the nozzle unit 10a to sprinkle the washing water so that the keratin that is the cause of the black mold remaining on the washing place floor 520 is discharged from the washing place floor 520 to the drain port 521. The suppression step S1 is carried out.
Further, by controlling the rotation of the nozzle portion 10a in the black mold suppressing step S1, the landing position of the washing water sprinkled from the nozzle portion 10a moves from one side of the bathroom 500 toward the drain port 521. The landing position of the washing water sprinkled from the nozzle portion 10a is moved from the other side of the bathroom 500 toward the drain port 521 by controlling the washing step (black mold suppressing step in the first half) and the rotation of the nozzle portion 10a. The second cleaning step (the second half of the black mold control step) is being carried out.

When carrying out the black mold control step S1, it is important to strip off the keratin remaining on the washing place floor 520 and reliably transport the keratin to the drain port 521 while preventing the keratin from reattaching to the floor surface of the washing place floor 520. be. For this purpose, in simple watering, keratin may be collected and accumulated at the corner between the peripheral edge of the washing floor 520 and the bathroom walls 541 to 544, and may not be reliably transported to the drainage port 541. be.

According to the present embodiment, this problem can be surely solved by devising a method of sprinkling the washing water. Specifically, the nozzle portion 10a that sprinkles the washing water on the washing place floor 520 while rotating is adopted, and the landing position of the washing water sprinkled from the nozzle portion 10a by controlling the rotation of the nozzle portion 10a. The first cleaning step of moving from one side of the bathroom 500 toward the drain port 521, and the landing position of the cleaning water sprinkled from the nozzle portion 10a by controlling the rotation of the nozzle portion 10a are other than the bathroom 500. By carrying out the second cleaning step of moving from the side toward the drain port 521, the keratin can be reliably transported to the drain port 521.

In the present embodiment, the first cleaning step (black mold suppressing step in the first half) ends in a state where the landing position of the washing water sprinkled from the nozzle portion 10a includes the drain port 521. As a result, the stripped keratin is surely discharged to the drainage port 521, and the stripped keratin is prevented from exceeding the drainage port 521 and accumulating on the corner portion.

Further, the region (second cleaning region) that is not cleaned in the first cleaning step (first half black mold suppressing step) is separated and washed by the second cleaning step (second half black mold suppressing step), so that the second cleaning region is cleaned. The keratin of the above is also surely discharged to the drain port 521.

In this way, by adopting a simple watering mode of separate cleaning up to the drainage port 521, the cleaning device 100 of the present embodiment reliably removes the keratin remaining on the floor surface and reliably conveys it to the drainage port 521. No keratin is deposited on the corners between the floor surface of the washing floor 520 and the bathroom walls 541 to 544.

Further, the washing floor 520 of the present embodiment has a substantially rectangular shape in a plan view, a counter 530 is installed on the first side of the washing floor 520, and the nozzle portion 10a is arranged on the counter 530 side. The drain port 521 is arranged on the side of the third side, which is one of both sides excluding the first side of the washing place floor 520 and the second side facing the first side.
By not arranging the nozzle portion 10a and the drain port 521 on the same side in this way, it is possible to effectively prevent the accumulation of keratin on the corner portion. When the nozzle portion 10a and the drain port 521 are arranged on the same side, the keratin is peeled off and scraped up by cleaning, and even if the cleaning is stopped at the drain port position, the keratin is accumulated on the corner portion of the first side. The risk of getting rid of it increases. In the present embodiment, such a risk is reduced by devising the arrangement as described above.
In particular, by arranging the nozzle portion 10a on the counter 530 side (first side side), the exfoliating performance is enhanced. Specifically, when the body is washed, a large amount of keratin remains in front of the counter 530, but by arranging the nozzle portion 10a on the first side, it is possible to secure a large amount of keratin in the washing water. The stripping can be performed more reliably.
Further, when the drainage port 521 is arranged on the second side, the drainage port 521 is in a state of facing the direction of watering the washing water from the nozzle portion 10a, so that even if the watering of the washing water is stopped at the position of the drainage port 521. There is a high risk that keratin will accumulate (remain) on the second side due to the force of the washed water that is sprinkled. In this case, it becomes difficult to reliably transport the keratin to the drain port 521. On the other hand, in the present embodiment, by arranging the drainage port 521 on the side of the third side, it is possible to reliably guide the drainage port 521 to the drainage port 521 without depositing (remaining) keratin on any corner portion. can.

The nozzle portion 10a of the present embodiment is arranged between the third side and the fourth side facing the third side, but is arranged on the side of the fourth side with respect to the middle. You may.
Around the drainage port 521, the washing water containing a large amount of keratin stripped off by the washing water finally arrives. Furthermore, the wash water diffuses in the process of flowing from the upstream, and the water level and the flow velocity decrease in the downstream. Due to these factors, keratin tends to reattach to the floor surface around the drainage port 521. In consideration of this tendency, by arranging the nozzle portion 10a on the side of the fourth side including the middle between the third side and the fourth side, the washing water sprinkled from the nozzle portion 10a is directed toward the drain port. If it is oriented, it is easy to directly wash the area around the drainage port 521 where keratin is likely to reattach, and the water level of the washing water (drainage flow) on the washing place floor 520 is increased to the drainage port 521. It is also easy to increase the force that pushes the keratin. This makes it possible to effectively suppress the reattachment of keratin around the drainage port 521.

Further, the first cleaning step (first half of the black mold suppressing step) of the present embodiment includes a state in which a part of the washing water sprinkled from the nozzle portion 10a is landed at the drain port 521, and is included in the second cleaning step (a second cleaning step). The latter half of the black mold suppressing step) also includes a state in which the landing position of a part of the washing water sprinkled from the nozzle portion 10a is the drain port 521.
As described above, the keratin collected by the washing water is likely to accumulate around the drainage port 521, and the risk of black mold generation is high. Further, when the sprinkling of the washing water is stopped around the drainage port 521, the drainage property of the washing water to the drainage port 521 is enhanced, but there remains a concern that a part of the keratin may be reattached to the periphery of the drainage port 521. Therefore, in both the first cleaning step and the second cleaning step, a part of the washing water is directly landed on the drain port 521, that is, the area around the drain port 521 where the keratin is easily reattached is carefully twice. By washing, the residual keratin can be suppressed more effectively.

Further, in the first washing step (first half of the black mold suppressing step) of the present embodiment, the landing position of the washing water sprinkled from the nozzle portion 10a is the first side, the fourth side, and the first side of the washing place floor 520. The two sides and the third side are moved in this order, and in the second washing step (the black mold suppressing step in the latter half), the landing position of the washing water sprinkled from the nozzle portion 10a is the above-mentioned washing place floor 520. The first side and the third side are moved in this order. Then, the second cleaning step is carried out after the first cleaning step is carried out.
When the first cleaning step and the second cleaning step are carried out step by step at different times, when the cleaning of one cleaning area is completed, a part of the cleaning water containing keratin spreads to the other cleaning area. Therefore, there is a risk that the keratin contained in a part of the washing water will reattach to the other washing area. Further, if the time from the end of one cleaning step to the start of the other cleaning step is long, the risk of keratin reattaching to the washing place floor 520 increases due to the progress of drainage of the washing water. Therefore, it is desirable that the time between the two cleaning steps be short. Therefore, as in the present embodiment, cleaning is performed by each of the first cleaning step and the second cleaning step so that the time from the end of one cleaning step to the start of the other cleaning step is shortened. The risk of redeposition of keratin can be reduced by preliminarily providing a difference in the area and performing washing in a wider range first.

Further, in the present embodiment, a drainage gradient toward the drainage port 521 is set on the floor surface of the washing place floor 520. Therefore, it is preferable to precede the cleaning of the fourth side, which is the facing side of the drain port 521. In this case, the washing water landing on the side of the fourth side can flow vigorously toward the drain port 521 due to the drainage gradient, and can be scattered into the area to be washed only by the second washing step. 2 Since the cleaning step is carried out later, no problem occurs. On the other hand, the washing water sprinkled in the second washing step can also scatter into the area to be washed only by the first washing step, but the flow direction is slow because the flow direction goes up the drainage gradient, and the degree of scattering is remarkable. low.

Before the first washing step is carried out, the first side washing step may be carried out in which the landing position of the washing water sprinkled from the nozzle portion 10a is maintained on the first side of the washing place floor 520. ..
A lot of keratin remains around the counter 530, and keratin tends to accumulate especially on the back of the counter 530. Therefore, by performing the first side cleaning step of cleaning the first side separately, the horny substance is expelled from the side of the first side to each cleaning area to be cleaned in the first cleaning step and the second cleaning step. As a result, the cleaning performance around the counter 530 can be improved.

Further, in the present embodiment, the number of the nozzle units 10a is one, and the control unit 30 stops sprinkling the cleaning water from the nozzle unit 10a (or may reduce the amount) after performing the first cleaning step. ), The nozzle portion 10a is rotated to the start position of the second cleaning step, and then the second cleaning step is performed.
It is also possible to provide two nozzle portions and carry out the first cleaning step and the second cleaning step separately from each nozzle portion. For example, it is possible to sprinkle water at the same time so as to sandwich the drainage port 521 from both sides. However, providing two nozzles is costly. According to this embodiment, it was confirmed that even with one nozzle portion, substantially the same effect as providing two nozzle portions can be realized. That is, after performing the first cleaning step, the watering of the washing water from the nozzle portion 10a is stopped (or the amount is reduced), the nozzle portion 10a is rotated to the start position of the second cleaning step, and then the second cleaning step is performed. By doing so, high exfoliating performance can be realized. The reason why the sprinkling of the washing water is stopped or reduced after the first washing step is not only to save water but also to prevent the peeled keratin from being transported to the side of the first side (second washing area).

<Specific examples of more suitable sprinkling control conditions>
As a result of various experiments on the cleaning device 100 of the present embodiment, in order to more reliably suppress the generation of slime on the washing floor 520, the control unit 30 is in the black mold suppressing step when the pink slime suppressing step S3 is carried out. It is preferable that 80 to 100% of the tap water remaining on the washing floor 520 after S1 is replaced with low-concentration sterilizing water.

According to the findings obtained by the present inventor from various experiments in order to achieve such a substitution rate, the control unit 30 is 0.4 to 4.0 L per unit time when the black mold suppressing step S1 is carried out. It is preferable that tap water is sprinkled from the nozzle portion 10a onto the washing place floor 520 at a water sprinkling amount of / min, and the control unit 30 is used per unit time when the pink slime suppressing step S3 is carried out. It is preferable that the low-concentration sterilizing water is sprinkled from the nozzle portion 10a onto the washing place floor 520 with a watering amount of 0.2 to 2.0 L / min. According to the verification by the present inventor, in the mutual comparison between the amount of tap water sprinkled per unit time in the black mold control step S1 and the amount of low-concentration sterilized water sprinkled per unit time in the pink slime control step S3. , The latter can be less than the former. When such a balance of the amount of water sprinkled per unit time is adopted, a high replacement rate can be realized.

From another point of view (according to another parameter), according to the findings obtained by the present inventor, the control unit 30 is set to 0.05 to 0.5 L / L / unit area when the black mold suppressing step S1 is carried out. It is preferable that tap water is sprinkled from the nozzle portion 10a onto the washing place floor 520 with a watering amount of cm ² , and the control unit 30 is used per unit area when the pink slime suppressing step S3 is carried out. It is preferable that the low-concentration sterilizing water is sprinkled from the nozzle portion 10a onto the washing place floor 520 with a watering amount of 0.06 to 0.6 L / cm ² . When such a balance of the amount of water sprinkled per unit area is adopted, a high replacement rate can be realized.

From yet another point of view (according to another parameter), according to the findings obtained by the present inventor, the control unit 30 has a total water volume of 0.8 to 8.0 L when the black mold suppressing step S1 is carried out. It is preferable that tap water is sprinkled from the nozzle portion 10a onto the washing floor 520 according to the amount of water sprinkled, and the control unit 30 has a total water amount of 1.0 to 1.0 when the pink slime suppressing step S3 is carried out. It is preferable that the low-concentration sterilizing water is sprinkled from the nozzle portion 10a onto the washing place floor 520 with a watering amount of 10.0 L. According to the verification by the present inventor, the latter method is used in the mutual comparison between the total amount of tap water sprinkled in the black mold control step S1 and the total amount of low-concentration sterilized water sprinkled in the pink slime control step S3. Can be less than the former. When such a balance of total water amount is adopted, a high substitution rate can be realized.

From yet another point of view (according to another parameter), according to the findings obtained by the present inventor, the control unit 30 has a flow rate of 0.8 to 8.0 m / s when the black mold control step S1 is carried out. It is preferable that tap water is sprinkled from the nozzle portion 10a onto the washing place floor 520, and the control unit 30 has a flow velocity of 0.8 to 8. It is preferable that low-concentration sterilizing water is sprinkled from the nozzle portion 10a onto the washing floor 520 at m / s. When such a balance of flow velocities is adopted, a high substitution rate can be realized.

From yet another point of view (according to another parameter), according to the findings obtained by the present inventor, the control unit 30 has a particle size of 100 to 500 μm from the nozzle unit 10a when the black mold suppressing step S1 is carried out. It is preferable that tap water is sprinkled on the washing place floor 520, and the control unit 30 has a particle size of 100 to 300 μm from the nozzle part 10a to the washing place floor 520 when the pink slime suppressing step S3 is carried out. It is preferable that low-concentration sterilizing water is sprinkled on top. When such a balance of particle size is adopted, a high substitution rate can be realized.

An example of the suitable watering conditions described above is collectively shown in FIG. 24.

Further, as described above, in order to suppress the generation of black mold, it is effective not to leave (remove) the keratin on the washing floor 520. Therefore, when the black mold suppressing step S1 is carried out, the control unit 30 sprinkles tap water from the nozzle unit 10a onto the washing place floor 520, so that the keratin on the washing place floor 520 is particularly drained together with the tap water. It is preferable that the water is drained to. Specifically, for example, if there is information on the residual amount (or tendency of residual) of keratin for each region on the washroom floor 520, it is desirable to utilize such information when carrying out the black mold control step S1. For example, for areas with a large amount of residual keratin (or a high tendency to remain), increase the amount of tap water sprayed per unit area, increase the amount of tap water sprayed per unit time, or tap water. Modifications such as increasing the total amount of water and increasing the flow velocity of tap water are effective.

Further, in order to more reliably replace the tap water with the low-concentration sterilizing water, the control unit 30 performs the black mold suppressing step as shown in FIGS. 25 and 26 when the pink slime suppressing step S3 is carried out. It is preferable that the low-concentration sterilizing water is sprinkled from the nozzle portion 10a in a region wider than the region where tap water is sprinkled on the washing place floor 520 at the time of carrying out S1. This can be achieved by controlling the flow velocity of the low-concentration sterilized water at the time of spouting to be larger than the flow velocity at the time of tap water spouting.

<Pause control in front of the drainage port>
According to a further study by the present inventor, in the black mold suppressing step S1, the rotation of the nozzle portion 10a is temporarily stopped at a position before the region where tap water is sprinkled from the nozzle portion 10a approaches the drain port 521. Alternatively, it is preferable to reduce the average rotation speed of the nozzle portion 10a in the rotation region including the position to an ultra-low speed (for example, about 1 to 3 ° / s).

When such control is adopted, as shown in FIG. 27, the state in which the tap water sprinkled from the nozzle portion 10a becomes a water flow and flows to the drain port 521 can be temporarily maintained. As a result, the keratin on the washing place floor 520 can be effectively washed away to the drain port 521.

FIG. 28 is a schematic diagram showing a time chart in the black mold suppressing step S1 that employs the temporary stop control in front of the drainage port.

As shown in FIG. 28, in the control unit 30 of the present embodiment, the region where tap water is sprinkled from the nozzle unit 10a is the drain port 521 while the nozzle unit 10a is being rotated from the fourth position P4 to the second position P2. At the position P5 before approaching, the rotation of the nozzle portion 10a is temporarily stopped by extending the length of the stop time of the electric motor 17 (for example, about 20 seconds). As a result, the state in which the tap water sprinkled from the nozzle portion 10a becomes a water flow and flows to the drain port 521 can be temporarily maintained.

Here, further, at the position P5 where the region where tap water is sprinkled from the nozzle portion 10a approaches the drainage port 521, the tap water has a sharp angle θ (for example, 5 to 85 °) with respect to the second wall 542 in a plan view. If the water is landed in such a way, the tap water that has landed on the second wall 542 becomes a reflected water flow reflected by the second wall 542 and flows to the drain port 521, and further, the rotation of the nozzle portion 10a. Since the state is temporarily maintained by the temporary stop (or deceleration) of, the keratin on the washing place floor 520 can be more effectively washed away to the drain port 521.

Similarly, according to the further study of the present inventor, also in the pink slime suppression step S3, the region where the low-concentration sterilizing water is sprinkled from the nozzle portion 10a is located in front of the drain port 521, and the nozzle portion 10a is located. It is preferable to suspend the rotation or reduce the average rotation speed of the nozzle portion 10a in the rotation region including the position to an ultra-low speed.

When such control is adopted, similarly, as shown in FIG. 28, the state in which the low-concentration sterilizing water sprinkled from the nozzle portion 10a becomes a water flow and flows to the drain port 521 is temporarily maintained. be able to. As a result, the tap water on the washing place floor 520 can be effectively washed away to the drain port 521.

FIG. 29 is a schematic diagram showing a time chart in a pink slime suppression process that employs a pause control in front of the drainage port.

As shown in FIG. 29, in the control unit 30 of the present embodiment, the region where the low-concentration sterilizing water is sprinkled from the nozzle unit 10a is drained while the nozzle unit 10a is being rotated from the fourth position P4 to the second position P2. At the position P5 in front of the mouth 521, the rotation of the nozzle portion 10a is temporarily stopped by extending the length of the stop time of the electric motor 17 (for example, about 40 seconds). As a result, the state in which the low-concentration sterilizing water sprinkled from the nozzle portion 10a becomes a water flow and flows to the drain port 521 can be temporarily maintained.

Here, further, the region where the low-concentration sterilizing water is sprinkled from the nozzle portion 10a is at the position P5 in front of the drain port 521, and the low-concentration sterilizing water has a sharp angle θ (for example, 5 to 5) with respect to the second wall 542 in a plan view. If the water lands so as to form 85 °), the low-concentration sterilizing water that has landed on the second wall 542 becomes a reflected water flow reflected by the second wall 542 and flows to the drain port 521. Further, since the state is temporarily maintained by temporarily stopping (or decelerating) the rotation of the nozzle portion 10a, the tap water on the washing place floor 520 can be more effectively washed away to the drain port 521.

<Utilization of wall reflected water>
The bathroom 500 of the present embodiment described above includes a washroom floor 520 constituting the washroom of the bathroom 500, a drain port 521 provided on the washroom floor 520 for draining residual water on the washroom floor 520, and a drain port 521. It controls a cleaning means having a bathroom wall 541 to 544 rising from the periphery of the washing floor, a nozzle portion 10a provided on one side of the bathroom 500 and sprinkling cleaning water into the bathroom 500, and a nozzle portion 10a of the cleaning means. A control unit 30 is provided. Then, the control unit 30 controls the nozzle unit 10a to sprinkle the washing water so that the keratin that is the cause of the black mold remaining on the washing place floor 520 is discharged from the washing place floor 520 to the drain port 521. The suppression step S1 is carried out.
Further, the washing water sprinkled from the nozzle portion 10a in the black mold suppressing step S1 removes the keratin of the washing place floor 520, while the removed keratin is deposited around the washing place floor 520 and the corners of the bathroom walls 541 to 544. It is designed to flow so as not to cause it to flow.
Then, in the present embodiment, at least a part of the washing water sprinkled from the nozzle portion 10a in the black mold suppressing step S1 also reaches the bathroom walls 541 to 544, and the bathroom walls 541 to 544 are also covered with the washing water. The landed wash water is reflected in the direction of the drain port 521 by the collision with the bathroom wall 541 to 544 to generate wall reflected water, and the wall reflected water is generated around the washing place floor 520 and in the bathroom. While stripping the keratin accumulated at the corners of the walls 541 to 544, the stripped keratin flows so as to be guided to the drainage port 521.

According to such an embodiment, the keratin on the washing place floor 520 can be remarkably reduced by carrying out the black mold suppressing step S1 for removing the keratin that is the cause of the black mold remaining on the washing place floor 520. As a result, the generation of mold on the washing floor 520 can be remarkably suppressed.

Then, when carrying out the black mold suppressing step S1, it is important to strip off the keratin remaining on the washing place floor 520 and completely remove it from the drain port 521. When the removal of the keratin is performed only by watering, it is important that the keratin reaches the drain port 521 without reattaching to the floor surface of the washing place floor 520.
Here, it is considered that if a plurality of nozzle portions are set at different angles so as to be directed to the drain port 521, it is effective to remove the keratin well without leaving the keratin. However, such a measure is not realistic because it is necessary to install a plurality of nozzle portions in the bathroom 500, which causes a space problem, and the water supply piping for each nozzle portion becomes complicated, resulting in high cost.
As in the present embodiment, it is common to set a single nozzle portion 10a on one side of the bathroom 500, but in this case, all the washing water sprinkled from the nozzle portion 10a is drained to the drain port 521. It is not easy to direct the water to the bathroom 500, and the force of the sprinkled washing water may cause the keratin to be driven to the wall of the bathroom 500, and as a result, black mold may be generated.
Specifically, a shower or a hot water may cause keratin to accumulate at the corners of the bathroom floor 520 and the bathroom walls 541 to 544. When removing this accumulated keratin, if water is sprinkled from one side, the force to peel the keratin from the keratin cannot be applied in all directions, and at least in a part of it, the watering force presses the keratin against the keratin. It works like that. Even when water is sprinkled on the floor surface to which the keratin is desired to be peeled off, the keratin stripped from the floor surface by the watering may act to be positively deposited on the corners.
The inventor of the present invention is excellent in that in the form of sprinkling the washing water from one side of the washing place floor 520, the keratin can be removed well without increasing the cost, and the keratin is not chased and collected near the wall. This is the discovery of the watering form.
Specifically, a part of the washing water sprinkled from the nozzle portion 10a is sprinkled so as to positively collide with the wall. With such a simple configuration, the washing water sprinkled from the nozzle portion 10a and not directed in the direction of the drain port 521 can be turned in the direction of the drain port 521. That is, with a simple device of adopting reflection by the bathroom wall 500, the sprinkled washing water flows while surely pointing in the direction of the drainage port 521 to remove the keratin, and the removed keratin is guided to the drainage port 521. Is made possible. This wall-reflected water can peel off the keratin at the corners (near the wall of the washroom floor 520) between the periphery of the washroom floor 520 and the bathroom walls 541 to 544 by falling from the wall, and the keratin is deposited at the corners. Can also be prevented, and the keratin can be reliably drained to the drain port 521.

Further, in the present embodiment, the counter 530 is installed on one side of the bathroom 500, and the nozzle portion 10a is arranged on the counter 530 side. Then, in the black mold suppressing step S1, at least a part of the washing water sprinkled from the nozzle portion 10a reaches the bathroom wall 542 on the counter 530 side, and in the black mold suppressing step S1, from the nozzle portion 10a. At least a part of the sprinkled wash water landed on the bathroom walls 541, 543, and 544 different from the bathroom wall 542 on the counter 530 side, and landed on the bathroom wall 542 on the counter side. The water force of the wall surface reflected water generated by the washing water is higher than the water force of the wall surface reflected water generated by the washing water landing on the bathroom walls 541, 543, and 544 different from the bathroom wall on the counter side. ..

The most residual keratin is the area on the counter 530 side where humans wash their bodies. In addition, in this part, the keratin may be firmly attached to the floor surface by the user stepping on it. Therefore, by providing the nozzle portion 10a on the counter 530 side, it is possible to maintain a high water force of the washing water for washing the washing place floor 520 on the counter 530 side. As a result, even strongly adhered keratin can be reliably removed.

Further, in the present embodiment, the nozzle portion 10a is configured to sprinkle washing water on the bathroom walls 541 to 544 and the washing place floor 520 while rotating, and the washing water sprinkled on the washing place floor 520 precedes. It is designed to collide with the wall surface reflected water generated by the wash water that has been sprinkled and landed on the bathroom walls 541 to 544, and is directly on the corners of the washroom floor 520 and the bathroom walls 541 to 544. It is designed not to work on.

Since the washing water reflected by the wall is diffused by the reflection, a high degree of washing control is required to surely remove the keratin so that the keratin is not left behind on the entire surface of the washing place floor 520. Further, when the washing water is sprinkled from one side on the washing floor 520, the water force of the washing water toward the corner facing the one side collides with (orthogonally) the bathroom wall, so that the keratin is pressed against the corner. The action will occur. Therefore, in addition to removing the keratin at the corners with the reflected water on the wall surface, the washing of the washing place floor 520 is performed by the washing water landing on the washing place floor 520, and further, the washing water landing on the washing place floor 520 is used. The corner keratin is removed by colliding with the wall surface reflected water generated by the wash water that has been sprinkled in advance and landed on the bathroom walls 541 to 544 so as not to cause the action of pressing the horns against the corners. The removal of keratin on the floor can be ensured. Further, since it is sufficient to arrange one nozzle portion 10a, the cost can be significantly reduced and the construction is easy.

Further, the nozzle portion 10a of the present embodiment has a nozzle opening whose vertical direction is longer than that in the horizontal direction.

For example, when the washing water is sprinkled while the nozzle portion 10a rotates, the reflection angle by the bathroom walls 541 to 544 changes sequentially. If the washed water sprinkled on the wall surface reflected water whose reflection angle changes in this way blocks the reflection, it may cause poor removal of keratin at the corners or exert a force to press the keratin against the corners. It may cause it to work. That is, it is preferable to stably perform reflection by the bathroom walls 541 to 544 under any circumstances.
Therefore, it is effective to narrow and stabilize the sprinkling position by adopting nozzle openings 11a and 12a whose vertical direction is longer than that in the horizontal direction. As a result, the influence of the change in the reflection angle of the wall surface reflected water can be suppressed, and stable exfoliation becomes possible. Further, one nozzle portion 10a can simultaneously sprinkle water on the bathroom walls 541 to 544 and water on the washing floor 520. Further, one nozzle portion 10a also controls the control in which the washing water landing on the washing place floor 520 is sprinkled in advance and collides with the wall surface reflected water generated by the washing water landing on the bathroom walls 541 to 544. Therefore, the timing of watering can be stabilized and can be reliably carried out. Therefore, it is possible to more reliably prevent the action of pressing the keratin against the corners.

<Utilization of watering that does not overtake wall reflected water>
From another viewpoint, the bathroom 500 of the present embodiment described above is provided on the washroom floor 520 constituting the washroom of the bathroom 500 and the washroom floor 520 for draining the residual water on the washroom floor 520. Cleaning means having a drain port 521, bathroom walls 541 to 544 rising from the periphery of the washing floor, and a single nozzle portion 10a provided on one side of the bathroom 500 and sprinkling washing water on the washing floor 520 while rotating. And a control unit 30 that controls the nozzle unit 10a of the cleaning means, and the control unit 30 controls the nozzle unit 10a to cause the keratin that is the cause of the black mold remaining on the washing floor 520. The black mold suppressing step S1 for sprinkling the washing water so as to be discharged from the washing place floor 520 to the drain port 521 is carried out.
Then, in the black mold suppressing step S1, the washing water sprinkled from the single nozzle portion 10a at the same time is landed on the lower part of the bathroom walls 541 to 544 on the first water landing portion and on the floor surface of the washing place floor 520. It has a second water landing part and a water landing part.
The first water landing portion is reflected by the lower part of the bathroom wall 541 to 544 to generate wall-reflected water, and the wall-reflected water is redirected in the direction of the drainage port 521 to be turned to the washing floor. While removing the keratin remaining on the floor surface of the 520, the water flows on the floor surface of the washing place floor 520 toward the drain port 521.
Further, when the control unit 30 carries out the black mold suppressing step S1, the wall surface reflected water generated by the first water landing unit of the washing water sprinkled in the predetermined first time is placed on the floor surface of the washing place floor 520. In the process of flowing, the wall-reflected water follows the region where the wall-reflected water flows so that the wall-reflected water is not overtaken by the second landing portion of the washing water sprinkled in the subsequent predetermined second time. The rotation of the nozzle portion 10a is controlled.

According to such an embodiment, the keratin on the washing place floor 520 can be remarkably reduced by carrying out the black mold suppressing step S1 for removing the keratin that is the cause of the black mold remaining on the washing place floor 520. As a result, the generation of mold on the washing floor 520 can be remarkably suppressed.

Then, when carrying out the black mold suppressing step S1, it is important to strip off the keratin remaining on the washing place floor 520 and completely remove it from the drain port 521. When the removal of the keratin is performed only by watering, it is important that the keratin reaches the drain port 521 without reattaching to the floor surface of the washing place floor 520.
Here, it is considered that if a plurality of nozzle portions are set at different angles so as to be directed to the drain port 521, it is effective to remove the keratin well without leaving the keratin. However, such a measure is not realistic because it is necessary to install a plurality of nozzle portions in the bathroom 500, which causes a space problem, and the water supply piping for each nozzle portion becomes complicated, resulting in high cost.
As in the present embodiment, it is common to set a single nozzle portion 10a on one side of the bathroom 500, but in this case, all the washing water sprinkled from the nozzle portion 10a is drained to the drain port 521. It is not easy to direct the water to the bathroom 500, and the force of the sprinkled washing water may cause the keratin to be driven to the wall of the bathroom 500, and as a result, black mold may be generated.
The inventor of the present invention is excellent in that in the form of sprinkling the washing water from one side of the washing place floor 520, the keratin can be removed well without increasing the cost, and the keratin is not chased and collected near the wall. This is the discovery of the watering form.
Specifically, a part of the washing water sprinkled from the nozzle portion 10a is sprinkled so as to positively collide with the wall. With such a simple configuration, the washing water sprinkled from the nozzle portion 10a and not directed in the direction of the drain port 521 can be turned in the direction of the drain port 521. That is, with a simple device of adopting reflection by the bathroom wall 500, the sprinkled washing water surely flows in the direction of the drainage port 521 to remove the keratin, and the removed keratin is guided to the drainage port 521. Is made possible. This wall-reflected water can peel off the keratin at the corners (near the wall of the washroom floor 520) between the periphery of the washroom floor 520 and the bathroom walls 541 to 544 by falling from the wall, and the keratin is deposited at the corners. Can also be prevented, and the keratin can be reliably drained to the drain port 521.
Furthermore, the inventor of the present invention has found that it is also effective to control the rotation of the nozzle portion 10a, particularly the rotation speed. Since the wall-reflected water flows through the washing floor 520 first, it may contain the largest amount of residual keratin. By sprinkling water so as not to overtake this, it is possible to prevent the exfoliated keratin from reverting or reattaching to the area where cleaning has been completed. By further sprinkling the washing water on the washing place floor 520 in such an embodiment, the keratin removal property can be enhanced. As a result, even with one nozzle portion 10a, it is possible to realize a long-lasting "clean state" of the washing place floor 520.

Further, in the control unit 30 of the present embodiment, the second water landing unit of the wash water sprinkled in the second hour after the first hour is the first water landing unit of the wash water sprinkled in the first hour. By merging without overtaking the wall surface reflected water generated by, the diffusion and water level drop generated in the process of the wall surface reflected water flowing on the floor surface of the washing place floor 520 are compensated for, and so on. It is designed to control the rotation.
The washing water sprinkled on the washing place floor 520 diffuses in the process of flowing through the washing place floor 520, and the water level is surely lowered. Due to such a decrease in water level, the removed keratin may be reattached to the washing floor. Therefore, the second water landing part is landed at a later time so as to merge (chase, follow) the wall surface reflected water generated by the first water landing part that has landed earlier without overtaking. By controlling the rotation of the nozzle portion 10a, the exfoliating property can be improved. In particular, by suppressing the decrease in water level due to diffusion, the redeposition of keratin can be effectively suppressed.

Further, in the control unit 30 of the present embodiment, the second water landing unit of the wash water sprinkled in the second hour after the first hour is the first water landing unit of the wash water sprinkled in the first hour. The rotation of the nozzle portion 10a is controlled so as to merge without overtaking the wall-reflected water generated by the wall surface and to provide a propulsive force for flowing the wall-reflected water in the direction of the drain port 521. ..
Providing propulsion means that the velocity of the wall reflected water (drainage flow) after merging is maintained or increased. In this case, it is possible to increase the feeding speed to the horny drainage port 521, which may be contained in a large amount in the wall reflection water. If the moving speed is low, not only the removing power of the keratin will decrease, but also the reattachment of the keratin will increase. can.

Further, the control unit 30 of the present embodiment is configured to change the rotation speed of the nozzle unit 10a at a predetermined position.
The reflected force of the washing water changes depending on the reflection angle of the bathroom walls 541 to 544. Further, when the watering distance is long, the watering energy becomes low and the force reflected by the wall also decreases, so that the flow rate of the washing water after landing becomes low. By adjusting the rotation speed of the nozzle portion 10a to adjust the amount of sprinkled water in accordance with such a tendency, it is possible to maintain or improve the keratin removing force and the reattachment prevention performance.

Further, in the control unit 30 of the present embodiment, when the cleaning water is landed in the region far from the nozzle unit 10a, the nozzle unit 10a is compared with the case where the cleaning water is landed in the region near the nozzle unit 10a. The rotation speed of the nozzle portion 10a is controlled so that the rotation speed of the nozzle portion 10a is low.
When the watering distance is long, the watering energy becomes low and the force reflected by the wall also decreases, so that the flow rate of the washing water after landing becomes low. By adjusting the rotation speed of the nozzle portion 10a to adjust the amount of sprinkled water in accordance with such a tendency, it is possible to maintain or improve the keratin removing force and the reattachment prevention performance.

<Effect of pulsating fluid water>
The cleaning device 100 of the present embodiment described above is a cleaning device for a bathroom washing place floor that constitutes a washing place of a bathroom 500 and cleans a washing place floor 520 having a drain port 521, and is a washing device for a washing place floor 520. It is provided with a cleaning means having a nozzle portion 10a for sprinkling water, and a control unit 30 for controlling the nozzle portion 10a. Then, the control unit 30 controls the nozzle unit 10a to sprinkle the washing water so that the keratin that is the cause of the black mold remaining on the washing place floor 520 is discharged from the washing place floor 520 to the drain port 521. The suppression step S1 is carried out.
Then, in the present embodiment, in the black mold suppressing step S1, the washing water sprinkled on the washing place floor 520 is drained to the drain port 521 so as to generate the energy for removing the keratin adhering to the washing place floor 520 by the energy of the rising wave. Up to, it is flowing while generating continuous waves.

When carrying out the black mold suppressing step S1, it is important to strip off the keratin remaining on the washing place floor 520 and completely remove it from the drain port 521. When the keratin is removed only by sprinkling water, if the keratin adheres to the washing place floor 520, it is necessary to take measures such as sprinkling a lot of washing water. However, sprinkling a large amount of washing water is disadvantageous in terms of cost, and since it is not possible to enter the bathroom 500 during washing, there is also a problem in terms of convenience such as long-term entry restrictions. ..
After many years of research, the inventor has found a technique for removing keratin adhering to the washing place floor 520 cleanly in a short time without sprinkling a large amount of washing water. At the same time, we have found a technique that can solve the problem that the keratin is reattached to the washing floor during the transportation process of stripping the keratin and discharging it to the drain port 521.
Specifically, the present embodiment is characterized in that the washing water sprinkled on the washing place floor 520 flows while generating continuous waves during the process of reaching the drain port 521. Due to the generation of amplitude accompanying the generation of waves, energy is generated upward with respect to the floor surface of the washroom floor 520. By this rising energy, the keratin adhering to the washing place floor 520 can be peeled off from the washing place floor 520. Then, once the keratin is peeled off from the washing place floor 520, it floats on the water surface or is contained in the water, so that the degree of being affected by the downward energy accompanying the amplitude of the wave is low. That is, for the stratum corneum, the influence of the wave is significantly greater due to the contribution of the rising energy.
In short, by generating waves (pulsations), it is possible to remove dead skin cells well and cleanly. Further, it is particularly effective to continuously generate this wave in the process leading up to the drainage port 521. As a result, the keratin can be evenly removed on the entire surface of the washing place floor 520, and the rising energy can be continuously applied to the peeled keratin, so that the reattachment of the keratin to the washing place floor 520 can be more reliably suppressed. ..
FIG. 30 is a schematic view showing how waves carry keratin, FIG. 30 (a) is a schematic plan view, and FIG. 30 (b) is a schematic cross-sectional view.

In the present embodiment, the washing water sprinkled from the nozzle portion 10a in the black mold suppressing step S1 first comes into contact with the keratin adhering to the washing place floor 520, and the first water landing for removing the keratin from the washing place floor 520. Part (becomes the first liquid water: see FIG. 23) and the second water landing part (becomes the second liquid water: see Fig. 23) that lands on the passing portion of the washing place floor 520 of the first water landing part. ,have.
Then, in the present embodiment, when the black mold suppressing step S1 is carried out, the control unit 30 receives the first water landing unit second in the process of flowing through the passing portion of the washing place floor 520. The rotation of the nozzle portion 10a is controlled so that the propulsive force in the direction toward the drain port 521, which is merged by the water portion, is increased.
In the bathroom 500, the sprinkled washing water advances while spreading widely to the washing place floor 520 in the process of moving the washing place floor 520 toward the drain port 521, so that the water level of the washing water drops. Due to this decrease in water level, the keratin comes into contact with the washing floor 520, and the keratin is likely to reattach (see FIG. 31). According to this embodiment, the water level can be raised by the merging. That is, not only the rising energy of the wave but also the effect of increasing the water level can enhance the effect of preventing the reattachment of the keratin.
Further, in the present embodiment, the rising energy of the wave can be surely produced. That is, the rotational speed of the nozzle portion 10a so that when the second landing portion joins the first landing portion, the second landing portion increases the propulsive force in the direction of the drain port 521 with respect to the first landing portion. By controlling the water landing, the second water landing part joins the first water landing part so as to increase the momentum, and the rising energy of the wave of the first water landing part can be surely generated (see FIG. 32). As a result, the first water landing portion can strip off more keratin, and the keratin on the washing floor can be removed more efficiently.

Further, in the present embodiment, the washing water sprinkled from the nozzle portion 10a in the black mold suppressing step S1 is the second passing portion of the washing place floor 520 of the first landing portion after being merged by the second landing portion. It also has a third water landing part that lands on the water. Then, when the black mold suppressing step S1 is carried out, the control unit 30 is in a process in which the first water landing part after being merged by the second water landing part flows through the second passage portion of the washing place floor 520. The rotation of the nozzle portion 10a is controlled so that the first landing portion is further merged by the third landing portion and the propulsive force in the direction toward the drain port 521 is further increased (FIG. FIG. 33).

In this embodiment as described above, the rising energy of the wave can be generated more reliably. That is, when the third water landing part merges with the first water landing part after being merged by the second water landing part, the third water landing part is propelled in the direction of the drain port 521 with respect to the first water landing part. By controlling the rotation speed of the nozzle portion 10a so as to further increase the force, the third landing portion joins the first landing portion so as to increase the momentum, and the wave of the first landing portion The rising energy of the water can be produced more reliably. As a result, the first water landing part merged by the second water landing part and the third water landing part can peel off more keratin, and the keratin of the washing place floor can be removed more efficiently. Further, after that, the fourth landing portion and thereafter may be sequentially merged to more reliably generate the rising energy of the wave of the first landing portion.

Further, in the washing place floor 520 of the present embodiment, as shown in FIG. 30B, a groove 522 extending in a direction in which the first water landing portion or the second water landing portion is non-parallel to the water landing direction is formed. Is formed.
As a result, when the sprinkled wash water (first water landing part or second water landing part) collides with the washing place floor 520 or flows over the washing place floor 520, the washing water also collides with the groove 522. Vertical waves (water pulsations) are formed. By disturbing the flow of water in this way, the keratin is easily peeled off from the washing place floor 520. Further, even when the washing water spreads and flows on the washing place floor 520, the reattachment to the keratin floor is suppressed by the wave. As a result, even if the water force and the amount of the sprinkled washing water are small, the keratin can be reliably removed from the floor.

Further, in the control unit 30 of the present embodiment, when the second water landing unit is landed from the nozzle unit 10a toward the bathroom wall 541 facing the nozzle unit 10a, the rotation speed of the nozzle unit 10a is low. The rotation of the nozzle portion 10a is controlled in this way.
When the sprinkling distance is long, the sprinkling energy is lowered and the flow rate of the washing water after landing is lowered. By adjusting the rotation speed of the nozzle portion 10a according to such a tendency, particularly the tendency of the second landing portion, it becomes easier to adjust the formation of continuous waves due to the merging with the first landing portion. It is possible to maintain or improve the ability to remove keratin and the ability to prevent reattachment.

<Effect of generating large waves and small waves>
Further, in the present embodiment, the continuous wave includes at least two types of waves, a small wave having a relatively small amplitude and a large wave having a relatively large amplitude.

According to the present embodiment, the small wave mainly acts as a wave for preventing reattachment, and the large wave acts as a wave that produces a large force for peeling the keratin from the floor surface. For example, by optimizing the location where large waves are generated, it is possible to aim at a location where keratin is likely to accumulate. As a result, it is possible to effectively remove the keratin that is difficult to remove with the rising energy of the small wave, and it is possible to further improve the exfoliating performance.

Further, in the present embodiment, small waves (mainly caused by the pulsation of the stepping motor) and large waves (mainly caused by the confluence of flowing water) are superimposed and generated on the washing floor 520. In the process leading up to the drainage port 521, the sprinkled wash water flows so that the frequency of small waves is higher than the frequency of large waves.

In the mode of simply flowing the washing water on the floor surface of the washing place floor 520 in an orderly manner, it may be difficult to remove the keratin, and the peeled keratin also easily reattaches to the washing place floor 520. Therefore, it is effective to prevent the reattachment of the keratin by making the frequency of occurrence of small waves higher than the frequency of occurrence of large waves as in the present embodiment and generating small waves at a high frequency that can be said to be continuous. On the other hand, on the periphery of the washing floor 520 where keratin is likely to accumulate, the adhesive force may be strong and it may be difficult to peel off only by sprinkling the washing water. By creating a large wave to match such a region, keratin can be removed more reliably.

Further, the small wave and the large wave of the present embodiment are generated by changing the rotational feed rate of the nozzle portion 10a.
As a wave generation method, various forms can be adopted. For example, a method of giving vibration to the floor surface of the washing place floor 520, a method of causing vibration by an air flow, and the like can also be adopted. However, the wave can be generated more easily by changing the rotation feed rate of the rotating nozzle portion 10a. In this case, although it is a simple and inexpensive embodiment, it has an optimum structure in the bathroom 500, and a more reliable effect can be obtained.

Further, in the present embodiment, in the black mold suppressing step S1, the washing water sprinkled from the nozzle portion 10a at the same time is the first water landing portion that lands on the lower part of the bathroom walls 541 to 544 and the washing floor 520. It has a second water landing part that lands on the floor surface, and the first water landing part is reflected by the lower part of the bathroom wall 541 to 544 to generate wall reflected water. The wall-reflected water is turned in the direction of the drainage port 521 and flows on the floor surface of the washroom floor 520 toward the drainage port 521 while removing the keratin remaining on the floor surface of the washroom floor 520. ing.
Then, when the black mold suppressing step S1 is carried out, the control unit 30 causes the wall surface reflected water generated by the first landing unit of the washing water sprinkled in the predetermined first time to flow on the floor surface of the washing place floor 520. In the process of doing so, the wall surface reflected water is merged by the second landing portion of the washing water sprinkled in the subsequent predetermined second time, and a propulsive force is added so as to move in the direction of the drain port 521. The rotation of the nozzle portion 10a is controlled so as to follow the region where the wall surface reflected water flows. Then, the large wave is generated by the confluence of the wall reflected water and the second landing portion of the washing water sprinkled in the predetermined second time.
According to the present embodiment, by simply adopting the reflection by the bathroom walls 541 to 544, the sprinkled washing water flows while surely directing toward the drain port 521 to remove the keratin, and the removed keratin is drained. It is possible to lead to the mouth 521. With this wall-reflected water, the keratin can be reliably drained to the drain port 521 without accumulating the keratin near the wall of the washing place floor 520.
The keratin is likely to be deposited on the corners of the peripheral edge of the washroom floor 520 and the bathroom walls 541 to 544, and it is difficult to generate a force for peeling off the keratin deposited on the corners by sprinkling water. However, since the wall-reflected water flows so as to peel off the keratin, the keratin can be peeled off even in a region where the keratin is difficult to peel off, such as a corner.
In addition, the keratin is ensured by adding a propulsive force that the wall surface reflected water is merged by the second landing part of the washing water sprinkled in the subsequent predetermined second time and moves in the direction of the drainage port 521. It can be transported to the drainage port 521 and removed, and reattachment of keratin can be prevented.
Further, the large wave is generated by the confluence of the wall reflected water and the second landing portion of the washing water sprinkled in the predetermined second time, so that the large wave is surely generated at the targeted position. It can be generated and the keratin can be effectively peeled off even in the region where the keratin is difficult to peel off. The method is also relatively easy because it is sufficient to control the feed rate of the rotation of the nozzle portion 10a so as to match the merging timing.
In the bathroom 500, the sprinkled washing water advances while spreading widely to the washing place floor 520 in the process of moving the washing place floor 520 toward the drain port 521, so that the water level of the washing water drops. Due to this decrease in water level, the keratin comes into contact with the washing floor 520, and the keratin is likely to reattach. According to this embodiment, the water level can be raised by the merging. That is, not only the rising energy of the wave but also the effect of increasing the water level can enhance the effect of preventing the reattachment of the keratin.

As described above, the rotation of the nozzle portion 10a in the present embodiment is driven by the stepping motor. Then, the small wave is generated by applying a minute speed change to the rotation of the nozzle portion 10a due to the speed change of the stepping motor.
It is generally not easy to control the generation of small waves and large waves by polymerizing them. In particular, large waves require detailed design or control because timing adjustment is required. However, since it is sufficient for the small waves to be generated substantially continuously in order to prevent the reattachment of the keratin, it is preferable that the small waves are generated by a simple configuration.
In the present embodiment, since the stepping motor is a drive system that feeds one step at a time, the speed is automatically (mechanically) changed every time one step is fed due to its structure. In other words, it is an intermittent feed method. Even if the speed change of the stepping motor is minute and invisible, when it is expanded by the rotation of the nozzle portion 10a, it is greatly expanded at the landing position and may appear as a larger speed change. Then, the change in speed produces a change in the amount of water sprinkled at the landing position, and small waves can be generated.
That is, if a stepping motor is used as in the present embodiment, small waves can be created simply by automatically feeding the nozzle portion 10a. In other words, a practically useful small wave can be easily created by adopting a stepping motor and mechanically configuring the nozzle portion 10a to expand the minute vibration.

Further, as described above based on FIG. 27 and the like, it is preferable that the nozzle portion 10a of the present embodiment temporarily stops rotating at a predetermined position and then rotates again.
There may be a region where the nozzle portion 10a must be rotated very slowly in order to optimize the merging timing in all regions with respect to the wall surface reflected water flowing through the washroom floor 520 in the direction of the drain port 521. This is because the flow velocity of the wall-reflected water is slow in the region where the reflective force is weak. It is not easy to control the rotation of the nozzle portion 10a very slowly, that is, if water is sprinkled in the process of moving slowly, it is easy to join at the wrong timing, and the keratin may even be returned to the upstream side. .. Therefore, by temporarily stopping the feed, the timing optimization control can be performed more easily and accurately.

Further, the control unit 30 can perform both the temporary stop control of the nozzle unit 10a at the predetermined position and the speed variable control of the nozzle unit 10a for each predetermined area. It is more preferable to have.
With respect to the speed control of the rotation of the nozzle portion 10a, by temporarily performing both the stop control and the speed variable control, it is possible to control the preferable merging timing with a higher degree of freedom.

Further, in the control unit 30 of the present embodiment, when the cleaning water is landed in the region far from the nozzle unit 10a, the nozzle unit 10a is compared with the case where the cleaning water is landed in the region near the nozzle unit 10a. The rotation of the nozzle portion 10a is controlled so that the rotation speed of the nozzle portion 10a is low (see FIGS. 8 to 11, 28 and 29).
The predetermined position is preferably a position where the landing position of the washing water corresponds to the corner portion of the washing place floor 520 (see FIG. 27).
In the region where the sprinkling distance is long, the flow velocity of the wash water is low, so that the flow velocity of the wall reflected water is also low. Further, at the four corners of the washroom floor 520, wash water can be reflected by the two walls. In addition, keratin is likely to accumulate at the corners of the four corners, and it is important to drain the keratin well from the corners, avoiding backtracking at the second landing part of the wash water that is sprinkled late. Should.
In such a corner portion, it is preferable to stop the rotation of the nozzle portion 10a to encourage the wall surface reflected water to slowly flow in the direction of the drainage port 521, and further, the wall surface reflected water sufficiently flows in the direction of the drainage port 521. It is also effective to join the second landing portion of the wash water, which is sprinkled later, in order to avoid returning the wash water to the corner portion.
If the rotation of the nozzle portion 10a is stopped and the merging is delayed, there is a possibility that the concern about reattachment of the keratin due to the decrease in the water level may increase. It has been confirmed that reattachment does not occur due to the decrease in water level even if the water level is delayed.

Further, the washing floor 520 of the present embodiment is set with a drainage gradient toward the drainage port 521. The predetermined position is a position where the landing position of the washing water corresponds to the corner portion of the washing place floor 520 corresponding to the downstream of the drainage gradient, and further, the landing position of the washing water of the nozzle portion 10a is drained. In some cases, it is preferable to temporarily stop or decelerate for a time shorter than the stop time at the predetermined position at the position corresponding to another corner of the washing place floor 520 corresponding to the upstream of the gradient. be.
The keratin collected from the upstream side tends to accumulate in the corner portion on the downstream side, for example, the side where the drainage port 521 is set. Further, the corner portion is a region where the drainage gradient ends, and after the washing water collides with the wall and its speed becomes zero, it further moves laterally and proceeds to the drainage port 521. Therefore, since the washing water is scattered due to the collision with the wall and the flow is slow, the merging timing of the second landing part of the washing water sprinkled with a delay is such that the wall reflected water calms down and is sufficiently in the direction of the drain port 521. It is preferable that it is after starting to move laterally. Therefore, it is preferable that the rotation of the nozzle portion 10a is temporarily stopped at the position corresponding to such a corner portion. In this case, the washing water that has been scattered including the keratin can be cleanly removed by the second landing portion of the washing water that is sprinkled with a delay.
Also, regarding the corners on the upstream side, it is necessary to temporarily stop or decelerate for a time shorter than the stop time at the position corresponding to the corners on the downstream side in order to improve the exfoliating performance. preferable.

<Countermeasures against dirt on the nozzle>
In the above embodiment, when the implementation of the black mold suppressing step S1 is started, the position where the nozzle portion 10a can land tap water substantially vertically toward the second wall 542 at the lower part of the counter 530 (initial position P1). ), The rotation of the nozzle portion 10a is started. Therefore, even if the nozzle portion 10a is contaminated at the start of the black mold suppressing step, the influence of the temporary disturbance in the water discharge direction that may occur due to the dirt is substantially vertical toward the second wall 542. It only appears when the water is discharged to the water, and the dirt is immediately blown off by the water discharge and disappears, so that it does not appear when the water is subsequently discharged to the central part of the washing floor 520. Therefore, even if the nozzle portion is temporarily contaminated, the water discharge control of the black mold suppressing step S1 to the central portion of the washing place floor 520 can be carried out as designed.

According to the present inventor, the initial position at which the implementation of the black mold suppressing step S1 is started is not limited to the position where tap water can be landed substantially vertically toward the second wall 542, and the nozzle of the second wall 542. The above effect can be obtained as long as the tap water can be landed within a range of ± 10 ° around the portion closest to the portion 10a.

Further, when the counter 530 is provided adjacent to a part of the bathroom wall as in the present embodiment, it is preferable that the nozzle portion 10a is arranged below the counter 530. In this case, since the nozzle portion 10a is hidden by the counter 530, it is possible to prevent the nozzle portion 10a from being contaminated by debris such as soap or shampoo used for cleaning the human body. At this time, the shortest distance between the second wall 542 and the nozzle portion 10a is, for example, within 80 cm.

Further, as in the present embodiment, it is preferable that the nozzle portion 10a is arranged at a position lower than the height of the bathtub wall. In this case, if the spouting direction of tap water or low-concentration sterilizing water from the nozzle portion 10a is designed to be horizontal or less, the tap water or low-concentration sterilizing water discharged from the nozzle portion 10a exceeds the bath wall and is in the bathtub. It never gets inside.

<Relationship with the door>
Further, the bathroom 500 generally further includes a doorway and a door for opening and closing the doorway. When the black mold suppressing step S1 is carried out, the control unit 30 makes tap water land on the area in front of the door on the washing place floor 520 from the nozzle unit 10a so as not to sprinkle the door. When the pink slime suppressing step S3 is carried out, it is preferable that the low-concentration sterilizing water is landed on the area in front of the door on the washing place floor 520 from the nozzle portion 10a so as not to sprinkle the water on the door.

In this case, even if the black mold suppressing step S1 and the pink slime suppressing step S3 are carried out with the door open, it is possible to prevent tap water and low-concentration sterilizing water from scattering outside the bathroom 500.

10a Nozzle part 10x Rotating shaft 11a 1st nozzle opening 12a 2nd nozzle opening 13 Water storage part 14a 1st water storage part 14b 2nd water storage part 17 Motor 18 Casing part 18a Sprinkling opening 19 Sprinkling part 20 Low concentration sterilized water generation part 30 Control Unit (watering control unit, rotation control unit)
30a Execution condition changing means 30b Manual changing means 35 Operation unit 51 Water supply pipe 52 Hot water supply pipe 53a, 53b Strainer 54a First solenoid valve 54b Second solenoid valve 55 Pressure regulating valve 56 Check valve 57 Vacuum breaker 100 Cleaning device 500 Bathroom 510 Bathtub 520 Washing area Floor 521 Drain port 530 Counter 531 Top plate 532 Bottom cover 541-544 1st to 4th walls

Claims (2)

A bathroom washing floor cleaning device that cleans the washing floor with a drain.
A cleaning means having a sprinkler port for sprinkling washing water on the washing floor,
A rotating part that rotates the cleaning means,
The cleaning means and the control unit for controlling the rotating unit are provided.
The sprinkler port is configured so that the opening area of the sprinkler port becomes smaller from the upper side to the lower side in the vertical direction when the sprinkler port is viewed from the front .
The cleaning means has a sprinkling portion having the sprinkling port and a casing portion having a sprinkling opening which is an opening corresponding to the sprinkling port.
The sprinkling portion is covered by the casing portion.
A cleaning device for floors in bathroom washrooms, which is characterized by this. The bathroom washing place floor washing device according to claim 1, wherein the sprinkler port is formed in an inverted triangular shape when the sprinkler port is viewed from the front.

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