JPH04176426A - Bath tub washing device - Google Patents

Abstract

PURPOSE:To take a bath without waiting long after having put on a button, by fully automatically operating from a washing operation by remote control to an additional heating after supplying water or hot water. CONSTITUTION:Signals from a signal input section 50 are received and the information of programs of the modes designated by buttons 46, 32 is received among a fully automatic operation mode and a washing operation mode given in a memory 54 and then advanced degree of the program is informed. And a timer actuation is instructed in a timer 52 and computation of water volume, etc., is instructed to a computation section 53 to output open or shut control signals to respective kinds of valves 15, 17, 20, 21 and washing nozzles 18a, 18b. And running of a pump 4 and running of burner of respective heat exchangers 10, 12 additional burning and hot water feeding are controlled at the same time. The memory 54 includes the fully automatic running program from the washing of bath tub to additional heating of bath water and the program only for washing of bath tub. At the same time, it stores the computed result of calculation of water volume or the like and the input data from the outside. And the washing program of bath tub in the fully automatic running program is settled to finish the actuation in a short time.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a bathtub cleaning method for automatically cleaning a bathtub.

[Conventional technology]

Japanese Utility Model Application Publication No. 63-71869 is known as a device for cleaning a bathtub. This device is equipped with a cleaning nozzle that sprays cleaning liquid containing detergent onto the lid of the bathtub, and a water injection nozzle that sprays water such as tap water.When cleaning the bathtub, the cleaning nozzle pumps the cleaning liquid from the detergent tank. water is supplied to the bathtub, and the water is sprayed into the bathtub to remove dirt. After that, water is supplied from the water supply source to a water injection nozzle to be sprayed into the bathtub, and the dirt components of the bathtub removed by the cleaning solution are removed. The cleaning liquid is washed away and discharged from the drain hole.

[Problems to be Solved by the Invention] However, in this conventional cleaning method, since the cleaning liquid is sprayed at room temperature, the chemical cleaning ability of the cleaning liquid is inferior, and it is difficult to effectively clean the inner wall surface of the bathtub. The problem was that it was not possible. Furthermore, the cleaning liquid sprayed from the cleaning nozzle is not used repeatedly, but rather flows out from the drain hole together with the water sprayed next, resulting in wasted detergent usage.

The inventors of the present invention have conducted repeated research on prototypes and have obtained a prototype device that solves these problems. A return pipe is connected to the bottom of the bathtub, the suction side of the pump is connected to the tip of the return pipe, an outgoing pipe is connected to the discharge side of the pump, and the tip of the outgoing pipe is connected to the cleaning nozzle. A heating source is built into the circulation pipe, the cleaning liquid injected from the cleaning nozzle is recovered from the return pipe, the recovered cleaning liquid is guided to the cleaning nozzle by a pump drive, and the heating source is turned on. As the bath passes, heated cleaning liquid is circulated and sprayed onto the inner wall of the bathtub, and dirt is removed from the inner wall of the bathtub by the chemical cleaning power of the cleaning liquid and the collision force of the spray.

By the way, fully automatic bathtubs that can fill the bathtub with hot water and reheat it have recently become popular. It is conceivable to develop a system in which the above-mentioned proposed cleaning device is incorporated into a bathtub equipped with such a fully automatic bath pot, and the control device performs fully automatic operation from cleaning the bathtub to filling it with hot water and reheating the bathtub. When developing such a system, it is desirable to shorten the time from cleaning the bathtub to reheating it, and to shorten the time from the start of cleaning until the bathtub can be bathed.

From this perspective, when cleaning bathtubs using fully automatic operation, we reduce the amount of detergent to avoid wasting detergent, shorten the cleaning liquid spray time to shorten the cleaning time, and reduce the noise of the cleaning liquid jet. In order to do this, it is convenient for use to perform a simple cleaning operation by lowering the injection pressure of the cleaning liquid a little.

However, when removing dirt from the inner walls of the bathtub by simple cleaning, especially when the inner walls of the bathtub are heavily soiled, such as when taking a bubble bath, even a small amount of dirt may remain even after washing. As the dirt left after cleaning accumulates, the dirt on the inner wall of the bathtub gradually becomes noticeable, and this dirt may have to be removed manually. However, cleaning the bathtub manually is hard work because it forces people into uncomfortable positions, and it is especially painful work for the elderly and the physically disabled.

The present invention has been made to solve the above-mentioned problems, and its purpose is to completely automatically clean the bathtub without manual intervention, even if dirt gradually accumulates after cleaning the bathtub. To provide a bathtub cleaning device capable of thoroughly removing dirt left after cleaning by performing careful cleaning in a system separate from operation.

[Means to solve the problem]

In order to achieve the above object, the present invention is configured as follows. That is, the present invention is a bathtub cleaning device installed in a bathtub equipped with a bathtub capable of filling the bathtub with water or filling the bathtub with hot water and reheating the bathtub. A cleaning nozzle that sprays onto the inner wall surface, a cleaning fluid circulation pipe with a built-in pump that collects the cleaning fluid sprayed into the bathtub from the cleaning nozzle from the bottom side of the bathtub and circulates it to the cleaning nozzle, and a detergent in the cleaning fluid circulation path. A detergent injection means for adding detergent, a heating means for circulating and spraying cleaning liquid, a control device for controlling bathtub cleaning operations, water filling or hot water filling operations, and reheating operations according to a given program, and a control device connected to this control device. This remote control is provided with a fully automatic button that allows the user to perform a fully automatic operation from washing operation to water filling or hot water filling to reheating, and a washing button that allows only the washing operation to be performed. The control device has a simple cleaning control function that performs a simple cleaning operation in response to a command from the fully automatic button, and a control device that controls one of the detergent amount, cleaning liquid injection time, and cleaning liquid injection pressure in response to a command from the cleaning button. The washing machine is characterized by having a careful washing control function that performs more careful washing by changing one or more in the increasing direction, and the remote controller also has a detergent injection control function when the washing operation is performed by pressing the washing button. Another characteristic feature of the present invention is that it is provided with a detergent amount setting section that can increase the amount of detergent added by the means, and an injection time setting section that can increase the amount of time the cleaning liquid is sprayed. has been done.

[Effect]

In the present invention, when the full automatic button on the remote control is turned on,
The bathtub is cleaned by a simple cleaning operation, that is, by a simple control method using a simple cleaning control function. This cleaning is
For example, the cleaning liquid (mixed liquid of water or hot water and detergent) stored on the bottom side of the bathtub is guided to the cleaning nozzle through the cleaning liquid circulation pipe when the pump is activated, and the cleaning liquid is heated by the heating means on the way to the cleaning nozzle. By circulating and spraying onto the inner wall surface of the bathtub, dirt on the inner wall surface of the bathtub is removed by the chemical cleaning power of the cleaning liquid and the jet collision force.

After spraying this cleaning liquid, for example, water or hot water is supplied from the bathtub side to the cleaning nozzle through the cleaning liquid circulation pipe, and this water or hot water is sprayed from the cleaning nozzle onto the inner wall of the bathtub. The cleaning liquid adhering to the bathtub and the dirt components removed by this cleaning liquid are discharged from the bathtub. After this cleaning operation is completed, hot water filling (or water filling) and reheating are continuously performed to boil the bath.

If the dirt that could not be removed by the simple fully automatic bathtub cleaning has accumulated and become noticeable, the cleaning button can be turned on to perform a more thorough cleaning operation as follows. First, when the washing button is turned on, the careful washing control function is activated, and the control device controls the amount of detergent injected from the detergent injection means, the washing liquid injection time (pump rotation time), and the washing liquid injection pressure (pump rotation time). By increasing one or more of the rotation speeds (number of rotations per unit time), more thorough cleaning is performed, and cleaning residues that could not be removed by the simple cleaning operation are thoroughly removed.

〔Example〕

Embodiments of the present invention will be described below based on the drawings. 1st
The figure shows a cleaning system of an embodiment of the bathtub cleaning device according to the present invention. In the same figure,! A drain pipe 16 is connected to the bottom of the bathtub 1, and the drain pipe 16 is equipped with an automatic drain valve 1 such as a solenoid valve.
7 is interposed.

Additionally, cleaning nozzles 18a and 18b are installed on the opposite side wall of the bathtub 1.
is installed with the injection hole facing the inner wall of the bathtub.

In this embodiment, the cleaning nozzles 18a and 18b have a built-in valve mechanism, and can open and close the flow path leading to the injection hole (open and close the valve). The cleaning nozzle 18a is connected to the branch outgoing pipe 6a, and the cleaning nozzle 18b is connected to the branching outgoing pipe 6b.

The inlet side of the outgoing pipe 6, which is formed by merging the branched outgoing pipes 6a and 6b and becomes one, is connected to the discharge side of the pump 4 via a reheating heat exchanger 10 that functions as a heating means.

The outlet side of a return pipe 5 is connected to the suction side of the pump 4, and the return end side of the return pipe 5 is connected to the first return pipe by providing a closing valve 20° 21 between the return pipes, such as a solenoid valve for switching the flow path. Branch pipe 22
and a second return branch pipe 23, and the return circulation port of the first return branch pipe 22 is connected to the bottom side of the bathtub 1, in this embodiment, the drain pipe 16. A pressure sensor 8 functioning as a water level sensor is connected to the first return branch pipe 22 so that the water level in the bathtub 1 can be detected at all times by the pressure sensor 8.

The return circulation port side of the second return branch pipe 23 is connected to the side wall of the bathtub 1 in communication. the first return branch pipe 22;
Washing nozzles 18a, 18 are passed through the return pipe 5, pump 4, reheating heat exchanger 10, outgoing pipe 6, and branch outgoing pipes 6a, 6b.
The pipe leading to b constitutes a cleaning liquid circulation pipe, and cleaning is carried out from the second return branch pipe 23 through the return pipe 5, pump 4, reheating heat exchanger lO2 outgoing pipe 6, and branch outgoing pipes 6a and 6b. The pipes leading to the nozzles 18a and 18b are reheating circulation pipes 3.
It consists of Note that the closed path including the bathtub 1 in the cleaning liquid circulation pipe constitutes a cleaning liquid circulation path.

The return pipe 5 is provided with a water flow sensor 24 that detects the flow of liquid flowing inside the pipe, and a temperature sensor 25 that detects the temperature of the liquid flowing inside the pipe.Furthermore, the return pipe 5 is provided with a detergent supply pipe 26. This detergent supply pipe 26
is connected to a detergent tank 28 via a detergent on/off valve 27 such as a solenoid valve, and liquid detergent is poured into the detergent tank 28 from an inlet 29 provided at the upper wet edge of the bathtub 1. The detergent supply pipe 26, the detergent on/off valve 27, and the detergent tank 28 constitute detergent charging means. and,
This detergent injection means, the return pipe closing valve 20.21,
The pressure sensor 8 is integrated in the national body 30 and is installed in the cleaning unit 3.
1, and this cleaning unit 31 is installed in the bathroom.

A hot water heat exchanger 1 is installed on the side adjacent to the reheating heat exchanger 10.
2 is arranged, and the water supply pipe 13 of the water heater 11 is provided with a flow rate sensor 39 that detects the flow rate of water passing through this water supply pipe, and a water supply temperature sensor 40 that detects the temperature of this water supply water, Furthermore, a hot water outlet temperature sensor 41 is provided on the outlet side of the hot water supply heat exchanger 12 to detect the outlet hot water temperature. The pump 4, the reheating heat exchanger lO1 water flow sensor 24, and the temperature sensor 25 on the reheating side; The hot water pouring on/off valve 15, such as a solenoid valve that opens and closes the communication pipe between the heating side and the hot water supply side, is the national body 42.
are integrated into a fully automatic bath pot 43 that is capable of filling the bathtub 1 with water and hot water, and this fully automatic bath pot 43
In this embodiment, the bathroom is located away from the bathroom.

Pipe opening/closing (valve opening/closing) control of the automatic drain valve 17, return pipe closing valve 20.21, detergent opening/closing valve 27, and hot water pouring opening/closing valve 15, and valve opening/closing of the cleaning nozzles 18a, 18b; The operation control of the pump 4 and the combustion control of the reheating heat exchanger 10 and the hot water supply heat exchanger 12 (burner combustion control) are performed by the control device f.
44. A remote control 45 is connected to this control device 44, and this remote control 45 includes a fully automatic button 46 for continuously performing cleaning operation, hot water filling operation, and reheating operation, and a reheating water temperature setting section 47. Hot water filling water level setting section 48 and cleaning button 3 for performing only cleaning operation
2 is provided.

The control device 44 has a signal input section 5 as shown in FIG.
0, judgment/instruction unit 51, timer 52, and calculation unit 53
and a memory 54. The signal input unit 50 receives a signal from the remote control 45, a water level detection signal from the pressure sensor 8, a water flow detection signal from the water flow sensor 24, a temperature detection signal from each temperature sensor 25, 40, 41, and a flow rate sensor. It receives the flow rate detection signal from 39 and applies these signals to the judgment/command section 51. The judgment/command section 51 receives the signal from the signal input section 50, and receives the program information of the mode specified by the button 46.32 from among the fully automatic operation mode and the cleaning operation mode given to the memory 54. In response to this, the progress state of the program is grasped, and if necessary, the timer 52 is commanded to operate, the calculation section 53 is commanded to calculate the amount of water, etc., and various valves 15.1? , 2
0.21° 27 and outputs opening/closing control signals to the cleaning nozzles 18a and 18b, and also operates the pump 4 and controls the burner combustion of each heat exchanger 10.12 for reheating and hot water supply.

The memory 54 has built-in programs for fully automatic operation from cleaning the bathtub to reheating the bathtub, and a program dedicated to cleaning the bathtub, as well as calculation results such as the water amount calculation and input values input from the outside (for example, set values). Remember. The bathtub cleaning operation program in the fully automatic operation program has a simple cleaning control function that performs a simple cleaning operation so that the operation can be completed in a short time. The program has a careful cleaning w5 function that performs a more careful cleaning operation to remove dirt that was not removed by the simple cleaning. Specifically, the careful cleaning control function makes the amount of detergent, cleaning liquid spray time, and cleaning liquid spray pressure larger than the simple cleaning control function, and removes the remaining inner wall surface of the bathtub. The cleaning control method is used to ensure that dirt is completely removed.

The present embodiment is configured as described above, and below, based on the flowchart shown in FIG. 3, an example of fully automatic operation from cleaning the bathtub to reheating the bathtub will be described first. First, set the bathtub l to When turned on, this on signal is applied to the judgment/command section 51 via the signal input section 5o of the control device 44.The judgment/command section 51 receives the command for the fully automatic operation mode and performs the simple cleaning from steps 101 to 148. Start a simple cleaning operation using the control function. In this operation, first, from steps 101 to 105, a detergent injection preparation operation is performed in which the inside of the reheating circulation pipe 3 is opened to the atmosphere.

That is, in step 101, a water level detection signal from the pressure sensor 8 is received, and it is determined whether there is hot water in the bathtub 1 or not. When the inside of the bathtub 1 is empty, the detergent on-off valve 27 is opened and the detergent injection operation is started. On the other hand, when the water level is detected and it is determined that there is hot water in the bathtub, the cleaning nozzles 18a and 18b are opened, the return pipe closing valve 21 is opened at the same time, and the automatic drain valve 17 is then opened to drain the bathtub. Start draining the hot water inside.

As the hot water is drained, the water level of the hot water that has accumulated in the bathtub gradually decreases, and when the water level drops below the injection holes of the cleaning nozzles 18a and 18b, the cleaning nozzles 18a and 18b
Air pressure acts on the pipe side from the injection hole, and hot water accumulated in the reheating circulation pipe 3 enters the bathtub from the return circulation port of the second return branch pipe 23 as the water level in the bathtub 1 decreases. Then, when the water level in the bathtub falls beyond this return circulation port, water is drained from the reheating circulation pipe 3 except for the first return branch pipe 22, and everything is opened to the atmosphere.

The lowering of the water level in the bathtub due to this drainage is detected moment by moment by the pressure sensor 8. Then, in step 104, bathtub 1
It is determined whether the inside is empty or not.

When the water level is detected by the pressure sensor 8, it is determined that the bathtub 1 is not empty, and when the detection signal of the pressure sensor 8 detects the reference pressure, which is the pressure at which the bathtub is empty, the bathtub 1 is determined to be empty. It is determined that the automatic drain valve 17 is closed in step 105.

Through the operations of steps 101 to 105, the inside of the reheating circulation pipe 3 is opened to the atmosphere, and the detergent can easily enter the reheating circulation pipe 3. In this state, the detergent on/off valve 27 is opened in step 106, and the detergent is reheated from the detergent tank 28 into the circulation pipe 3, in this embodiment the return pipe 5.
It is put inside. At the same time, in step 107, it is determined whether the predetermined T3 time has elapsed, that is,
After applying an open signal to the detergent on-off valve 27, the control device 44 counts the time using the timer 52, and keeps the detergent on-off valve 27 open until the time T9 has elapsed.
When time T1 has elapsed, it is determined that the necessary minimum amount of detergent (for example, 20 cc) has been supplied from the detergent tank 28 to the return pipe 5 through the detergent supply pipe 26 to avoid waste of detergent, and the detergent on/off valve is activated. Close 27.

Next, the process moves to the cleaning operation from steps 109 to 148. In step 109, the hot water pouring on/off valve 15 is opened, the burner combustion of the hot water heat exchanger 12 is performed, and the hot water of S+"C is reheated and dropped into the circulation pipe 3. This dropped hot water flows through the outgoing pipe 6. The hot water that passes through the return pipe 5 enters the bathtub 1 through the second return branch pipe 23 together with the detergent, thereby causing water to flow into the bathtub l. The cleaning solution, which is a mixture of hot water and detergent, accumulates.

In step 110, it is determined whether the amount of hot water supplied to the bathtub has reached a predetermined value Calculate the amount of water cumulatively. The pouring valve 15 is kept open until the calculated amount of water does not reach X + 1, and the calculated amount of water reaches X + i! , the pouring on/off valve 15 is closed.

By supplying X, l of the cleaning water to the bathtub 1, the minimum amount of cleaning liquid (mixture of hot water and detergent) necessary for smoothly operating the pump 4 is stored at the bottom of the bathtub 1.

After the hot water of X and 2 is supplied, the hot water pouring on/off valve 15 is closed and hot water supply is stopped. Next, the cleaning nozzle 18b and the return pipe closing valve 21 are closed, and the return pipe closing valve 20 is closed. Can be opened. Then, the pump 4 is started. This pump 4
The number of rotations per unit time N (the injection pressure of the cleaning liquid) is set to the minimum value necessary to remove dirt. By starting the pump 4, the cleaning liquid accumulated at the bottom of the bathtub 1 is sucked into the pump 4 through the first return branch pipe 22.
Furthermore, this sucked cleaning liquid enters the reheating heat exchanger 5 and 0 from the discharge side of the pump 4, where the cleaning liquid is heated to a temperature suitable for exerting its chemical cleaning ability, which is 5 in this embodiment.
The heated hot water cleaning liquid is heated to 0 to 60°C and is sprayed into the bathtub from the cleaning nozzle 18a through the outgoing pipe 6.

Then, this spouted cleaning liquid flows down to the bottom side of the bathtub 1, and the cleaning liquid that has fallen down to the bottom side is sucked into the pump 4 again from the first return branch pipe 22, and similarly passes through the reheating heat exchanger 10. It is ejected into the bathtub from the post-cleaning nozzle 18a. During this circulating injection of the cleaning liquid, temperature control of the cleaning liquid is performed from steps 114 to 117.

That is, based on the temperature detection signal obtained from the temperature sensor 25, the control device 44 determines in step 114 whether or not the temperature of the cleaning liquid is below St°C (for example, 60°C). In the following cases, the gas burner of the reheating heat exchanger 10 performs combustion in step 115 to heat the cleaning liquid. Then, in step 116, it is determined again whether the temperature of the cleaning liquid is equal to or higher than S2°C.
When the temperature is lower than °C, the burner with 5 steps of reheating heat exchange continues to heat the cleaning liquid until the temperature reaches S2°.
When the temperature exceeds C, burner combustion of the heat exchanger 10 is stopped.

Next, in step 118, it is determined whether 12 hours, the minimum required for removing dirt, have elapsed since the pump 4 was started. If the T2 time has not elapsed, the operations from steps 114 to 117 are repeated, and the temperature of the cleaning liquid to be circulated and injected is continued to be controlled at the temperature of 52.0 time is 1.
When two hours have elapsed, the pump 4 is stopped in step 119, the cleaning nozzle 18a is closed, and the cleaning nozzle 18b is opened in step 120.

Then, in step 121, the pump 4 is started again.

Then, the cleaning liquid circulated from the bathtub 1 through the first return branch pipe 22 passes through the reheating heat exchanger 10 and is injected into the bathtub from another cleaning nozzle 18b, and this circulation injection of the cleaning liquid is repeated. It will be destroyed. At this time, in steps 122 to 125, the steps 114
The temperature control of the cleaning liquid is performed in the same way as the operation in step 117.
The cleaning liquid is maintained at a temperature of Ss'C (for example, 60°C) and is sprayed into the bathtub 1.

In step 126, a determination is made as to whether or not the minimum T1 time necessary for removing dirt has elapsed since the pump was started in step 121, in the same manner as in step 11B, and when 13 hours have elapsed, the pump 4 is stopped and the next Automatic drain valve 17
can be opened. Subsequently, the return pipe closing valve 20 is closed, and the cleaning liquid in the bathtub 1 is drained.

Next, the hot water pouring on/off valve 15 is opened, and hot water at 34°C (for example, 60°C) is supplied from the hot water supply heat exchanger 12 side to the cleaning nozzle 18b while cleaning the inside of the outgoing pipe 6.
Then, the hot water is sprayed onto the inner wall surface of the bathtub, and the cleaning liquid adhering to the inner wall surface of the bathtub and the dirt components removed by the cleaning liquid are washed off to the bottom side of the bathtub l and discharged. In step 131, it is determined whether or not 14 hours have elapsed for washing with this hot water. When 14 hours have elapsed, the hot water pouring on/off valve 15 is closed and the injection of hot water from the washing nozzle 18b is stopped.

Then, in step 133, the cleaning nozzle 18a is opened and the cleaning nozzle 18b is closed.Next, in step 134, the hot water pouring on/off valve 15 is opened, and hot water from the hot water supply heat exchanger 12 is supplied to the cleaning nozzle 18a from the cleaning nozzle 18a. Hot water is similarly injected toward the inner wall of the bathtub, and the cleaning liquid on the inner wall of the bathtub is dropped while washing the pipes. When the hot water is ejected from the cleaning nozzle 18a for a period of time TS, the hot water pouring on/off valve 15 is activated in step 136. is closed to stop the injection of hot water, and in step 137 the cleaning nozzle 18a is closed.

Next, from steps 138 to 142, the inside of the second return branch pipe 23 is cleaned. That is, in step 138, the return pipe closing valve 21 is opened, and then the molten metal pouring on/off valve 15 is opened. As a result, the hot water on the hot water heat exchanger 12 side passes through the return pipe 5 and enters the second return branch pipe 23 from the return pipe closing valve 21, and while washing the cleaning liquid in this second return branch pipe 23, the hot water enters the bathtub. 1 and is ejected. After 14 hours of hot water cleaning in the second return branch pipe 23, the hot water pouring valve 15 is closed, the hot water cleaning in the second return branch pipe 23 is stopped, and the return valve 21 is closed. Similarly, from steps 143 to 147, the first return branch pipe 22
The interior will be washed with hot water. This hot water cleaning is done by closing the return pipe valve 20.
This is done by opening the hot water supply valve 15 and allowing hot water from the hot water supply heat exchanger 12 side to flow from the return pipe 5 to the first return branch pipe 22.

After the first return branch pipe 22 is washed with hot water, the automatic drain valve 17 is closed in step 148.

Next, the process moves to steps 149 to 152 for filling hot water.

First, in step 149, the cleaning nozzles 18a and 18b are opened, and at the same time, the return pipe closing valve 21 is opened.Next, in step 150, the hot water pouring on/off valve 15 is opened, and the hot water coming out from the hot water heat exchanger 12 side is It is supplied to the firing circulation pipe 3 side and passes through both the return pipe 5 and the outgoing pipe 6 to the cleaning nozzles 18a and 1.
8b and the return circulation port of the second return branch pipe 23 into the bathtub 1. The water level of the hot water being filled is detected by a pressure sensor 8. In step 151, based on the water level detection signal from the pressure sensor 8, it is determined whether the detected water level has reached the water level set by the hot water filling water level setting section 48 of the remote controller 45, and when the detected water level has reached the set water level. The hot water filling operation is stopped by closing the hot water pouring on/off valve 15.

Next, a reheating operation is performed from steps 153 to 157. First, in step 153, the pump 4 is activated, and the hot water in the bathtub 1 is sucked into the pump 4 from the second return branch pipe 23 through the return pipe 5, and this sucked hot water is discharged from the pump 4. It passes through the reheating heat exchanger 10 and the outgoing pipe 6 from the side, and is discharged into the bathtub 1 from the cleaning nozzles 18a, 18b. After this circulation of hot water is started, in step 154, the detected temperature of the hot water in the bathtub 1 detected by the temperature sensor 25 is compared with the temperature set by the reheating hot water temperature setting section 47 of the remote control 45. When the detected temperature is lower than the set temperature, the burner combustion of the reheating heat exchanger 10 is started to reheat the circulating hot water. During this reheating, the detected temperature and the set temperature are constantly compared, and the Reheating continues until the temperature reaches the set temperature. When the detected temperature reaches the set temperature, the pump 4 is stopped in step 156, and if reheating is in progress, burner combustion of the reheating heat exchanger is further stopped.Next, in step 157, the cleaning nozzle 18a is stopped.

18b is closed, and the inter-return pipe closing valve 21 is further closed to complete the reheating operation, and a heat retention operation is performed for a certain period of time.

In the bathtub cleaning operation in the above-mentioned fully automatic operation, the injection of cleaning liquid towards the inner wall of the bathtub is set to the minimum necessary time, so the bathtub cleaning operation is completed in a short time, and accordingly, the fully automatic The time from when the button 46 is pressed until the bath boils is shortened, and the bather can use the fully automatic button 46.
You can take a clean bath without having to wait long after pressing the button. In addition, although this fully automatic operation is performed frequently every day, the amount of detergent used in this fully automatic operation is set to the minimum necessary, so there is no wastage of detergent and it is extremely economical. . Furthermore, in this fully automatic bathtub cleaning, the injection pressure of the cleaning liquid, that is,
The number of revolutions per unit time of the pump is set at a low value to be the minimum necessary, thereby reducing the sound of the cleaning liquid jetting against the inner wall of the bathtub, thereby preventing the generation of noise.

When the dirt that could not be removed by the bathtub cleaning in the fully automatic operation becomes noticeable, a more careful bathtub cleaning operation is performed by turning on the cleaning button 32. This bathtub-specific cleaning operation is performed by the operations from step 100a to step 148 in FIG.

That is, when the cleaning button 32 is turned on, the control device 4
4 performs a bathtub cleaning operation based on the careful cleaning control ms function. First, the ON signal of the cleaning button 32 is applied to the judgment/command section 51 via the signal input section 50, and the judgment/command section 51 determines that the operation is to be performed with careful control. The time T1 for opening the detergent on-off valve 27 in step 107 is changed to a longer time TI'.

By changing the valve opening time, a large amount of detergent is introduced into the reheating circulation pipe (cleaning liquid circulation pipe).

This increases the concentration of the detergent contained in the cleaning liquid, making it easier to remove stains, and even stains remaining after cleaning during the fully automatic operation can be removed. After changing the valve opening time of the detergent on-off valve 27 in step 100a, in step 100b, the operation time of the pump 4 in step 11B and step 126 is changed to a longer Tt.
' and T, ', and the number of revolutions per unit time N of the pump 4 is changed to a larger value N'. By increasing the operating time of the pump 4, the cleaning nozzles 18a, 1
The spraying time of the cleaning liquid sprayed from 8b onto the inner wall surface of the bathtub becomes sufficiently long, making it easier to remove dirt from the inner wall surface of the bathtub.

In addition, by increasing the number of rotations per unit time of the pump 4, the injection pressure of the cleaning liquid injected from the cleaning nozzles 18a and 18b increases, and accordingly, the injection collision force of the cleaning liquid against the inner wall surface of the bathtub increases. (This also makes it easier to remove dirt from the inner wall of the bathtub. Steps 100a and 1
After changing the cleaning conditions in step 00b, steps 101 to 1 are performed in the same way as the bathtub cleaning operation in the fully automatic operation.
The cleaning operation from step 48 is performed, and step 148
At the same time as the operation is completed, the careful cleaning operation by the cleaning button 32 ends.

゛ In the bathtub cleaning operation using the cleaning button 32, the cleaning liquid is sprayed for a long time, the amount of detergent is increased, and the cleaning liquid is sprayed at a high pressure. It becomes possible to cleanly remove dirt that could not be removed by a simple cleaning operation during operation.

It should be noted that the present invention is not limited to the above-mentioned embodiments, and may take various embodiments.For example, in the above-mentioned embodiments,
In the bathtub-specific cleaning operation using the cleaning button 32, the amount of detergent, the injection time of the cleaning liquid, and the injection pressure of the cleaning liquid were all changed in the direction of increasing. You may also change one.

Furthermore, in the above embodiment, the heating temperature of the cleaning liquid is not changed during the cleaning operation in fully automatic operation and during the cleaning operation using the cleaning button, and is set to the same temperature (for example, 60°C) at which dirt is easiest to remove. However, when cleaning the bathtub in fully automatic operation, this heating temperature is set to a slightly lower value to prevent hot cleaning liquid from being splashed onto the child if the lid 14 of the bathtub 1 is accidentally opened by an infant during the cleaning operation. You may also be able to drive more safely by making sure that you don't get burned.

Furthermore, in the above embodiment, the detergent amount, cleaning liquid injection time, and cleaning liquid injection pressure that are changed when the cleaning button 32 is turned on are fixedly determined, but for example, as shown in FIG. 45, a detergent amount setting section 33 for manually setting the amount of detergent, and a detergent amount setting section 33 for manually setting the amount of detergent, and a detergent amount setting section 33 for manually setting the amount of detergent, and
An injection time setting section 34 for manually setting the operating time is provided, and the detergent amount setting section 33 and the injection time setting section 34 can be operated to arbitrarily change the detergent input amount and the cleaning liquid injection time. You can.

Furthermore, the system of the cleaning device according to the present invention is not limited to that shown in FIG. 1, and can adopt various system configurations.
A closing valve 20° 21 between return pipes is provided on the return side of the return pipe to branch it into a first return branch pipe 22 and a second return branch pipe 23. It may also be connected to the bottom of the bathtub 1. In the above embodiment, the bathtub cleaning device is built into a fully automatic bath pot, and the reheating heat exchanger 10 is connected to the reheating hot water. Although it serves both as a heater and a heater for cleaning liquid, the cleaning system can be separated from the bath pot and configured as a separate system. Furthermore, in the above embodiment, the reheating heat exchanger 10
Although the hot water supply heat exchanger 12 is constructed using a gas combustion type heater, this heater can also be constructed using an electric heater or an oil combustion type heater.

〔Effect of the invention〕

When cleaning the bathtub in the fully automatic operation mode, the present invention performs a simple cleaning operation by reducing the amount of detergent, cleaning liquid injection time, and cleaning liquid injection pressure. The time it takes for the bath to boil after turning it on is shortened, allowing bathers to enjoy a clean, clean bath without having to wait long after pressing the fully automatic button. In addition, since the amount of detergent is kept small, there is no waste of detergent even if you wash frequently, such as every day, making it very economical.In addition, the injection pressure of the cleaning liquid is also small, so the injection of cleaning liquid is It suppresses the noise caused by collisions and can operate completely automatically, from washing the bathtub to reheating the bathtub, in a quiet state.

If dirt that could not be removed by the simple bathtub cleaning operation becomes noticeable, the cleaning button can be turned on to perform a more thorough dedicated cleaning operation to clean the inner walls of the bathtub. It is possible to remove dirt without manual intervention, and the bathtub can always be kept in a clean state without noticeable dirt, which is very convenient.

[Brief explanation of the drawing]

Fig. 1 is a system diagram of an embodiment of the bathtub cleaning device according to the present invention, Fig. 2 is a main part configuration diagram showing an example of a control device constituting the embodiment, and Fig. 3 shows the operation of the embodiment. The flowchart shown in FIG. 4 is an explanatory diagram showing another embodiment in which the remote control is equipped with means for manually changing the amount of detergent to be added and the spraying time of the cleaning liquid. l... Bathtub, 3... Reheating circulation pipe, 4... Pump, 5... Return pipe, 6... Outgoing pipe, 6a, 6b...
- Branch outgoing pipe, 8... Pressure sensor, 10... Reheating heat exchanger, 11... Water heater, 12... Hot water heat exchanger, 13... Water supply pipe, 14... Lid , 16... Drain pipe, 17... Automatic drain valve, 18a, 18b... Washing nozzle, 20.21... Return pipe closing valve, 22... First
Return branch pipe, 23...Second return branch pipe, 24...
・Water flow sensor, 25... Temperature sensor, 26... Detergent supply pipe, 27... Detergent on/off valve, 28... Detergent tank, 29... Inlet, 30... National polity, 31...・Cleaning unit, 32...Cleaning button, 33...Detergent amount setting section, 34...Injection time setting section, 39...Flow rate sensor, 40...Water supply temperature sensor, 41...Temperature of hot water output Sensor, 42... National polity, 43... Fully automatic bath pot, 44
...Control device, 45...Remote control, 46...Full automatic button, 47...Reheating water temperature setting section, 48...
Hot water filling water level setting section, 50... Signal input section, 51...
Judgment/instruction section, 52... timer, 53... calculation section,
54...Memory.

Claims (2)

[Claims] (1) A bathtub cleaning device installed in a bathtub equipped with a bathtub that can fill the bathtub with water or fill with water and reheat the bathtub, and this bathtub cleaning device sprays a detergent-containing cleaning liquid onto the inner wall surface of the bathtub. The cleaning nozzle that sprays the cleaning liquid into the bathtub, the cleaning liquid circulation pipe with a built-in pump that collects the cleaning liquid sprayed from the cleaning nozzle into the bathtub from the bottom side of the bathtub and circulates it to the cleaning nozzle, and the cleaning liquid circulation path in which detergent is introduced. A detergent injection means, a heating means for circulating and spraying cleaning liquid, a control device for controlling bathtub cleaning operations, water filling or hot water filling operations, and reheating operations according to a given program, and is connected to this control device. The remote controller is provided with a fully automatic button for performing a fully automatic operation from cleaning operation to water filling or hot water filling to reheating, and a cleaning button for performing only the cleaning operation, and the control device is provided with a A simple cleaning control function that performs a simple cleaning operation in response to a command from the fully automatic button, and one or more of detergent amount, cleaning liquid injection time, and cleaning liquid injection pressure from the simple cleaning control function according to a command from the cleaning button. This bathtub cleaning device has a careful cleaning control function that performs more thorough cleaning by changing the direction of increasing the amount of water. (2) The remote control has a detergent amount setting section that can increase the amount of detergent dispensed by the detergent dispensing means during a cleaning operation using the cleaning button, and an injection time setting section that can increase the amount of time the cleaning liquid is sprayed. A bathtub cleaning device according to claim 1, wherein the bathtub cleaning device is provided.