JP2008036130A - Dishwasher - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem that water needs to be put in a washing tub with a bucket or the like when the washing tub is to be hand-washed and there is the risk of water leakage and a short circuit or the like. <P>SOLUTION: The dishwasher is provided with a washing tub cleaning switch 30f for selecting a cleaning mode for cleaning the inside of the washing tub 2. When the cleaning mode is selected by the washing tub cleaning switch 30f, washing water is supplied to a low water level by opening a water supply valve 9, and the supplied washing water is discharged in response to prescribed operation signals by a user. Thus, even when stains of minerals and calcium, etc., are stuck inside the washing tub 2, the user can hand-wash the inside of the washing tub 2 until he/she is satisfied. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a dishwasher for cleaning dishes by spraying washing water onto the dishes accommodated in a washing tank.

  Conventionally, the following has been proposed as a dishwasher having a function of cleaning the inside of a cleaning tank. This dishwasher is a dishwasher equipped with a washing mode for washing dishes housed in the washing tub and a self-cleaning mode for washing the inside of the washing tub. Self-cleaning mode according to the detection means for receiving water, the generating means for generating alkaline ionized water from the received water, the dirt detecting means for detecting dirt on the inner wall of the washing tank, and the detection output of the dirt detecting means Was automatically specified, and a cleaning means for cleaning the inside of the cleaning tank using the generated alkaline ionized water was provided. In this dishwasher, dirt on the inner wall of the washing tank is detected by the dirt detecting means in the drying process after the completion of the washing process and the rinsing process, and when the dirt detecting means detects dirt, a reminder for self-cleaning is performed. . When the user presses the self-cleaning switch in response to the reminder notification, the self-cleaning mode is entered. In this self-cleaning mode, according to a predetermined process, it is determined whether there is tableware in the cleaning tank, and when it is determined that there is no tableware in the cleaning tank, alkaline ionized water is supplied into the cleaning tank, The supplied alkaline ionized water is sprayed into the cleaning tank, and the deposits that become dirt and odor components attached in the cleaning tank are cleaned (for example, Patent Document 1).

Japanese Patent Laid-Open No. 2002-539

  However, in the conventional dishwasher, when the dirt is detected by the dirt detection means in the drying process, a self-cleaning reminder is issued, and the user presses the self-cleaning switch in response to the reminder notice. Since the inside of the washing tank was washed with alkaline ionized water, it was effective for adhesion of dirt in the washing tank due to an increase in the use time and the number of use of the washing. For example, the washing is repeated. Therefore, when tap water, minerals in food or calcium adhere to the washing tank, there is a problem that washing suitable for the user's satisfaction cannot be performed. That is, when minerals and calcium adhere to the cleaning tank, there are cases where the user wants to carefully wash the local area in the cleaning tank or to wash the entire area carefully from the viewpoint of hygiene.

  In addition, when hand-washing the inside of the washing tank, until now the user has put the tap water in the bucket and the tap water contained in the bucket has been put in the washing tank. When water was put into the washing tank, water could leak from the bucket or water could overflow outside the washing tank. Moreover, even when it does not overflow outside the washing tank, there is a risk that water may enter the hot air heater or the blower fan through the blower passage and cause electric leakage. Furthermore, in order for the user to wash the inside of the washing tank, it is not only troublesome to set the water level in the washing tank to an appropriate level, but there is also a problem that the risk of the above-mentioned water leakage and electric leakage increases if rushed. It was.

  The present invention has been made in view of the above problems, and an object thereof is to provide a dishwasher that can clean and clean the inside of a washing tank quickly and smoothly without fear of water leakage or leakage.

  In order to solve the above-described problems and achieve the above object, the first aspect of the present invention includes a cleaning tank for storing tableware, a water supply means for supplying cleaning water into the cleaning tank, and a water supply means. The cleaning water reservoir that stores the cleaning water supplied by the water, the injection nozzle that injects the cleaning water stored in the cleaning water reservoir toward the dishes, and the cleaning water in the cleaning water reservoir are pumped to the injection nozzle A pump, a cleaning mode selection means for selecting a cleaning mode for cleaning the inside of the washing tank, and a control means for controlling the pump; when the cleaning mode is selected by the cleaning mode selection means, The cleaning water is supplied to a predetermined water level by the means, and the supplied cleaning water is drained in response to a predetermined operation signal.

  According to this configuration, when the cleaning mode is selected by the cleaning mode selection means, the cleaning water is supplied to the predetermined water level by the water supply means, so that a large amount of water is not supplied unnecessarily. In addition, the user does not have to perform the work of putting the tap water in the bucket into the washing tank, the water leaks from the bucket, the water overflows outside the washing tank, and the water enters the ventilation passage. Through the hot air heater and the blower fan, there is no risk of leakage. And since the supplied wash water is drained in response to an operation signal from the user, the user can sufficiently clean the inside of the washing tank until then. Thereby, for example, even when dirt such as minerals and calcium adheres in the cleaning tank, the user can wash and wash the inside of the cleaning tank until satisfaction is achieved.

  According to the second aspect of the present invention, there is provided a dishwasher according to the first aspect, wherein after the washing water is drained in response to the operation signal, the washing water is again returned to a predetermined water level by the water supply means. Is supplied, the pump is operated, the supplied re-fed water washing water is injected from the injection nozzle, and then the re-fed water washing water is drained.

  According to this configuration, in the dishwasher according to the first aspect, after the washing water is drained in response to the operation signal, the washing water is again supplied to the predetermined water level by the water supply means, and the pump is operated. Since the re-fed water cleaning water supplied from the injection nozzle is jetted and then the re-fed water cleaning water is drained, after the hand washing in the cleaning tank by the user is finished, Rinsing in the cleaning tank can be performed. Thereby, the cleaning tank can be cleaned and cleaned quickly and smoothly.

  A third aspect of the present invention relates to a dishwasher according to the first aspect, wherein the dish opener detects whether the lid of the washing tub is open, and is cleaned by the lid open detector. A lid opening notifying means for notifying when the lid of the tank is detected to be open, and when the cleaning mode is selected by the cleaning mode selecting means, the lid of the cleaning tank is detected by the lid opening detecting means. Is detected by the lid opening notification means. After that, when it is no longer detected by the lid opening detection means that the lid of the cleaning tank is opened, a notification by the lid opening notification means is issued. The cleaning water is supplied to the cleaning tank by the water supply means.

  According to this configuration, when the cleaning mode is selected by the cleaning mode selection means, if the lid opening detection means detects that the lid of the cleaning tank is opened, the lid opening notification means notifies, and thereafter When the lid opening detection means no longer detects that the lid of the cleaning tank is opened, the notification by the lid opening notification means is terminated, and the cleaning water is supplied into the cleaning tank by the water supply means. When cleaning water is supplied to the water, the water can be supplied without splashing out of the cleaning tank. Further, if the lid is opened, the user can know that the lid is opened by notifying by the lid opening notifying means, so that the inside of the cleaning tank can be surely closed with the lid closed. Wash water can be supplied.

  According to a fourth aspect of the present invention, there is provided a dishwasher according to the first aspect, wherein a water amount detecting means for detecting whether or not the wash water has been supplied to a predetermined water level, and the wash water by the water amount detecting means. Water supply completion notifying means for notifying when it is detected that the water has been supplied to a predetermined water level, and when the cleaning mode is selected by the cleaning mode selecting means, the water amount detecting means can bring the wash water to the predetermined water level. When it is detected that the water has been supplied, it is notified by the water supply completion notification means, and then the notification by the water supply completion notification means ends when it is detected by the lid opening detection means that the lid of the cleaning tank is opened. To do.

  According to this configuration, when the cleaning mode is selected by the cleaning mode selection means, when the water amount detection means detects that the cleaning water has been supplied to the predetermined water level, the water supply completion notification means is notified, and then the lid is opened. When the detection means detects that the lid of the cleaning tank is opened, the notification by the water supply completion notification means ends, so that the user can know that the cleaning water has been supplied to the cleaning tank, and then The user can smoothly wash the washing tank by hand.

  A fifth aspect of the present invention relates to the dishwasher according to the second aspect, wherein the control means controls the pump to operate intermittently, and supplies re-feed water washing water from the injection nozzle. It is characterized by intermittent injection.

  According to this configuration, since the pump is controlled to be intermittently operated by the control means, and the refill water cleaning water is intermittently injected from the injection nozzle, the cleaning water that is intermittently injected from the injection nozzle Can be washed away and the detergent, dirt, etc. in the washing tank after being washed by hand with the wavy washing water can be surely washed off.

  As described above, according to the tableware washing machine of the present invention, there is no fear of water leakage or electric leakage, and the inside of the washing tank can be cleaned and cleaned quickly and smoothly.

Hereinafter, an embodiment of the dishwasher of the present invention will be described with reference to the drawings. FIG. 1 is a diagram showing an internal structure of a dishwasher in one embodiment of the present invention.

As shown in FIG. 1, the dishwasher 1 includes a main body case 20, a cleaning tank 2 provided therein, and a lid 3 for taking in and out the tableware. The cleaning tank 2 accommodates tableware (objects to be cleaned), and an opening 21 is formed on one end surface of the cleaning tank 2. The lid 3 is provided in the opening 21 so as to be freely opened and closed. By opening the lid 3, the user can put in and out the tableware in the cleaning tank 2.

Inside the washing tub 2, there are provided a tableware basket 4 for storing tableware and an injection nozzle 5 for injecting cleaning water toward the tableware. The injection nozzle 5 is rotatably attached to the bottom of the cleaning tank 2 and has a large number of injection ports. The cleaning water is sprayed from the spray nozzle 5 toward the tableware, whereby the tableware stored in the tableware basket 4 is cleaned.

Further, the dishwasher 1 includes a water supply port 19 formed in the upper rear portion of the cleaning tank 2, a water supply valve 9 (water supply means) for supplying cleaning water into the cleaning tank 2, and a water amount detection sensor 10 ( Water quantity detection means). The water supply valve 9 is an electromagnetic valve, and cleaning water is supplied into the cleaning tank 2 by opening and closing the water supply valve 9. That is, when the water supply valve 9 is opened, cleaning water is supplied into the cleaning tank 2 from a supply source of cleaning water (for example, water supply, hot water supply device, etc.) through the water supply port 19.

The water amount detection sensor 10 detects the level of the cleaning water supplied into the cleaning tank 2, and a float switch is used in this embodiment. Specifically, the water amount detection sensor 10 includes a float case 22, a float 23 provided in the float case 22, and a water amount detection switch (not shown) that detects the vertical displacement of the float 23. Yes. When the water level of the cleaning water in the cleaning tank 2 becomes the lower point water level in the float case 22, the lower water level detection switch (not shown) is turned “ON” to detect the low water level in the cleaning tank 2. it can. When the water level in the cleaning tank 2 becomes the upper water level in the float case 22, the upper water amount detection switch (not shown) is turned “ON”, and the high water level in the cleaning tank 2 can be detected. Thus, by detecting the vertical displacement of the float 23, the low water level and the high water level in the cleaning tank 2 can be detected, and predetermined cleaning water can be stored in the cleaning tank 2.
In the present embodiment, a float switch is used as the water amount detection sensor 10, but the present invention is not limited to this, and a pressure switch may be used.

A washing water reservoir 12 is formed in the lower part of the washing tank 2, and is provided with a pump 6, a hot water heater 7, a hot water temperature sensor 8 (hot water temperature detection means), and a drain valve 31.

The cleaning water reservoir 12 is formed at the front bottom of the cleaning tank 2 and has a concave shape that is lower than the bottom surface of the cleaning tank 2. Then, the cleaning water that has dropped onto the bottom surface of the cleaning tank 2 flows into the cleaning water reservoir 12 and is stored in the cleaning water reservoir 12.

The hot water heater 7 is for heating the cleaning water and is provided in the cleaning water reservoir 12. The hot water temperature sensor 8 detects the temperature of the cleaning water stored in the cleaning water reservoir 12. As a result, the wash water stored in the wash water reservoir 12 is heated by the hot water heater 7, and the temperature of the wash water heated by the hot water heater 7 is detected by the hot water temperature sensor 8. Then, by feeding back the temperature detected by the hot water temperature sensor 8 and further heating the cleaning water, the cleaning water stored in the cleaning water reservoir 12 can be brought to a predetermined temperature.

The pump 6 includes a cleaning pump 6a that pumps cleaning water stored in the cleaning water reservoir 12 to the spray nozzle 5, and a drain pump 6b that pumps cleaning water in the cleaning tank 2 to a drain pipe described later. Then, by driving the cleaning pump 6a, the cleaning water stored in the cleaning water reservoir 12 can be jetted from the injection nozzle 5 toward the tableware, and the drainage pump 6b is driven to perform cleaning. Wash water stored in the water reservoir 12 can be drained outside the dishwasher 1. In the present embodiment, the cleaning pump 6a and the drainage pump 6b are provided as separate bodies. However, the present invention is not limited to this, and the cleaning pump 6a and the drainage pump 6b may be provided integrally. Moreover, it is good also as the pump 6 only with the washing pump 6a or the drainage pump 6b.

The drain valve 31 is an electromagnetic valve and is provided in a drain pipe described later. By opening the drain valve 31, the washing water stored in the washing tub 2 is discharged to the outside of the dishwasher 1. In the present embodiment, the drainage means is constituted by the drainage pump 6b and the drainage valve 31. However, the drainage means is not limited to this, and the drainage means may be constituted only by the drainage valve 31 that discharges the washing water of the washing water reservoir 12. Good.

Below the cleaning water reservoir 12, a water inlet 13 is formed. The water inlet 13 includes a cleaning pump water inlet 13a communicating with the cleaning pump 6a and a drain pump water inlet 13b communicating with the drain pump 6b. The cleaning pump 6 a is formed with a suction port 14 a for sucking the cleaning water in the cleaning water reservoir 12 and a discharge port 16 a for discharging the cleaning water to the spray nozzle 5. Further, the drainage pump 6b is formed with a suction port 14b for sucking the cleaning water of the cleaning water reservoir 12 and a discharge port 16b for discharging the cleaning water to a drain pipe to be described later. In this embodiment, the water inlet 13 is composed of the washing pump water inlet 13a and the drain pump water inlet 13b provided separately from this, but the present invention is not limited to this, and the cleaning pump water inlet 13a and the drain pump inlet are provided. A water inlet that also serves as the water inlet 13b may be configured. Alternatively, only the cleaning pump water inlet 13a or the drain pump water inlet 13b may be used as the water inlet.

The cleaning pump water inlet 13a below the cleaning water reservoir 12 is connected to the suction port 14a of the cleaning pump 6a by a cleaning pump suction pipe 15a. The discharge port 16 a of the cleaning pump 6 a is connected to the spray nozzle 5 by a discharge pipe 17. Thereby, the wash water stored in the wash water reservoir 12 is pumped to the injection nozzle 5 by the driving force of the wash pump 6a.

Moreover, the drainage pump water inlet 13b below the washing water reservoir 12 is connected to the suction port 14b of the drainage pump 6b by a drainage pump suction pipe 15b. Further, the discharge port 16 b of the drain pump 6 b is connected to the drain pipe 24. Thereby, the wash water stored in the wash water reservoir 12 is drained to the outside of the dishwasher 1 through the drain pipe 24 by the driving force of the drain pump 6b.

In the present embodiment, the cleaning pump 6a is provided with a cleaning pump drive motor (not shown), and the drainage pump 6b is provided with a drainage pump drive motor (not shown). However, the present invention is not limited to this, and when the cleaning pump 6a and the drainage pump 6b are integrally configured, the cleaning pump 6a and the drainage pump 6b may be driven by a single drive motor (not shown). In this case, the drainage pump 6b functions as a drive motor for the cleaning pump 6a by rotating the drive motor (not shown) in the forward direction (clockwise), and reversely (counterclockwise) in the reverse direction. It drives as a drive motor.

The washing water reservoir 12 is provided with a leftover filter 18. This leftover filter 18 collects leftovers washed away from the dishes.

A blower fan 25, a warm air heater 26, and a warm air temperature sensor 29 are provided in the lower part of the dishwasher 1, and a lid open / close detection sensor 33 and an exhaust port 27 are provided in the upper part of the dishwasher 1, respectively. It has been.

The blower fan 25 sends air into the cleaning tank 2, and the hot air heater 26 heats the air sent by the blower fan 25. The temperature of the air heated by the hot air heater 26 is detected by the hot air temperature sensor 29, and the air sent into the washing tub 2 is discharged from the exhaust port 27 to the outside of the dishwasher 1. The lid opening / closing detection sensor 33 detects opening / closing of the lid 3, and the lid opening / closing detection sensor 33 can detect whether the lid 3 is opened or closed.

A control device 28 is provided at the front lower part of the dishwasher 1. The control device 28 controls the cleaning pump 6a and the drainage pump 6b. Furthermore, an operation panel 30 is formed at the front lower part of the dishwasher 1. Details of the operation panel 30 will be described later with reference to FIG.

Next, the operation panel of the dishwasher of the present invention will be described with reference to FIG. FIG. 2 is a diagram showing an operation panel of the dishwasher according to one embodiment of the present invention.

As shown in FIG. 2, the operation panel 30 includes a power switch 30a, an operation start / stop switch 30b, a cleaning course selection switch 30c, a drying course selection switch 30d, a reserved time selection switch 30e, a cleaning tank cleaning switch 30f, and a cleaning course display. 30g, a drying course display unit 30h, a cleaning tank cleaning display unit 30i, and a reserved time display unit 30j are provided.

The power switch 30a is a switch for turning on / off the power of the dishwasher 1, and the operation start / stop switch 30b is a switch for starting the operation of the dishwasher 1, and temporarily stopping the operation after the start. This is a switch for starting an automatic rinsing process of a cleaning process described later when cleaning the apparatus. Thereby, when the user presses the power switch 30a of the dishwasher 1, the power of the dishwasher 1 is turned on, and in the on state, various courses described later are selected and set, and the operation start / stop switch If 30b is pressed, the operation of the dishwasher 1 is started. Thereafter, when the user wants to temporarily stop the operation of the dishwasher 1, the operation of the dishwasher 1 is temporarily stopped by pressing the operation start stop switch 30b. Then, when the user wants to resume the operation of the dishwasher 1, the operation of the dishwasher 1 is resumed from the paused state by further pressing the operation start / stop switch 30b. Thus, if the operation start stop switch 30b is pressed while the dishwasher 1 is operating, the operation of the dishwasher 1 is temporarily stopped and the operation of the dishwasher 1 is temporarily stopped. If the operation start / stop switch 30b is pressed in the state, the operation of the dishwasher 1 is resumed. The cleaning / cleaning process will be described later.

The cleaning course selection switch 30c is a switch for selecting and setting a cleaning course. The cleaning course includes a “standard” cleaning course (hereinafter referred to as “standard cleaning course”), a “high power” cleaning course (hereinafter referred to as “high power cleaning course”), and a “silent” cleaning course (hereinafter referred to as “cleaning course”). "Silent cleaning course" is being prepared. The standard cleaning course is a course for cleaning and rinsing at a standard level, and the high power cleaning course is a course for cleaning and rinsing with a longer process time than the standard cleaning course, and a silent cleaning course. Is a course that performs cleaning and rinsing with less cleaning noise than the standard cleaning course. The cleaning course selection switch 30c can be used to select and set any of the “no cleaning”, “standard cleaning course”, “high power cleaning course”, and “silent cleaning course”.

The cleaning course display unit 30g displays (lights up) the cleaning course currently selected and set. Specifically, a light emitting element is arranged on the left side of “standard”, “high power”, and “silent”, and this light emitting element is lit or blinked, so that the user can select which cleaning course is currently selected. You can know what is being done. Since the default (initial value) of the cleaning course is set to “no cleaning”, any light emission of the cleaning course shown in FIG. 2 is performed when the power switch 30a is pressed and the power is turned on. The element is not lit or flashing.

For example, when the user wants to select and set the silent cleaning course, the user can select and set the silent cleaning course by pressing the cleaning course selection switch 30c three times. That is, each time the cleaning course selection switch 30c is pressed, the lighting elements are sequentially turned on in the order of “no cleaning” → “standard” → “high power” → “silent” → “no cleaning”. Can be selected and set. Details of the standard cleaning course, the high power cleaning course, and the silent cleaning course will be described later.

The drying course selection switch 30d is a switch for selecting and setting a drying course. As a drying course, a “30 minutes” drying course (hereinafter referred to as “30 minutes drying course”), a “60 minutes” drying course (hereinafter referred to as “60 minutes drying course”), and a “air blowing” drying course ( Hereinafter, “blow drying course”) is prepared. The 30-minute drying course is a course in which the air sent by the blower fan 25 is heated by the hot air heater 26 for 30 minutes to dry the tableware in the cleaning tank 2, and the 60-minute drying course is a hot air heater. 26 is a course in which the air sent by the blower fan 25 is heated for 60 minutes to dry the dishes in the washing tub 2, and the blower drying course is sent by the blower fan 25 by the hot air heater 26. In this course, the air in the washing tub 2 is dried by the air sent by the blower fan 25 without being heated. The drying course selection switch 30d can select and set any of the drying courses “no drying”, “30 minutes drying course”, “60 minutes drying course”, and “blow drying course”.

The drying course display unit 30h displays (lights up) the drying course currently selected and set. Specifically, a light emitting element is arranged on the left side of “30 minutes”, “60 minutes”, and “air blowing”, and this light emitting element is lit or blinked to allow the user to select which drying course is currently selected. You can know if it is set. Since the default (initial value) of the drying course is set to “no drying”, when the power switch 30a is pressed and the power is turned on, any light emitting element shown in FIG. 2 is turned on. Or it does not flash.

For example, when the user wants to select and set the 60-minute drying course, the user can select and set the 60-minute drying course by pressing the drying course selection switch 30d twice. That is, each time the drying course selection switch 30d is pressed, the lighting elements are sequentially turned on in the order of “no drying” → “30 minutes” → “60 minutes” → “air blowing” → “no drying”. Can be selected and set.

If the drying course selection switch 30d is selected when the cleaning course is selected by the cleaning course selection switch 30c, the selected drying course is set after the cleaning course is completed. When the cleaning course selection switch 30c does not select and set the cleaning course, the drying course selection switch 30d sets the drying course, and then the operation start / stop switch 30b is pressed. Thus, the drying course selected and set is executed.

The reservation time selection switch 30e is a switch for selecting and setting a reservation time. As the reservation time, a reservation “after 2 hours” (hereinafter referred to as “reservation after 2 hours”) and a reservation after “4 hours” (hereinafter referred to as “reservation after 4 hours”) are prepared. The reservation after 2 hours reserves in advance to start the operation of the dishwasher 1 after 2 hours, and the reservation after 4 hours reserves in advance to start the operation of the dishwasher 1 after 4 hours. Is. The reservation time selection switch 30e can be used to select and set both reservations after 2 hours and reservations after 4 hours.

The reservation time display section 30i displays (lights up) the reservation time currently selected and set. Specifically, a light emitting element is arranged on the left side of “after 2 hours” and “after 4 hours”, and this light emitting element is lit or blinked, so that the user can select which reservation time is currently set. You can know if you are. Since the default (initial value) of the reservation time is set to “no reservation time”, any light emitting element shown in FIG. 2 is in a state where the power switch 30a is pressed and the power is turned on. Does not light or flash.

If the user wants to select and set a reservation after 4 hours, for example, the reservation time selection switch 30e is pressed twice by the user, whereby the reservation after 4 hours can be selected and set. In other words, each time the reservation time selection switch 30e is pressed, the lighting elements are sequentially turned on in the order of “no reservation” → “after 2 hours” → “after 4 hours” → “no reservation” to select the reservation time. Can be set.

The cleaning tank cleaning switch 30f is a switch for setting cleaning of the cleaning tank 2 (selecting the cleaning tank cleaning mode). The user presses the cleaning tank cleaning switch 30f (cleaning tank cleaning switch “ON”) to enter the cleaning tank cleaning mode, and cleaning water is supplied into the cleaning tank 2 as will be described later.

The cleaning tank cleaning display unit 30i displays (notifies) whether or not the current cleaning tank cleaning mode is set. Specifically, a light emitting element is arranged on the left side of “cleaning tank cleaning”, and the light emitting element is lit or blinked, so that the user can know whether the cleaning tank cleaning mode is currently set. . In the cleaning tank cleaning display section 30i, when the power switch 30a is pressed and the power is turned on, the light emitting element shown in FIG.

Then, as will be described later, when the cleaning tank cleaning switch 30f is pressed by the user, the cleaning tank display 30i blinks, and when the cleaning tank cleaning switch 30f is pressed by the user, the cleaning tank 2 If the lid 3 of the cleaning tank is opened, the cleaning tank cleaning display section 30i is lit to notify (notify) that the lid 3 of the cleaning tank 2 is opened. In addition, after the cleaning tank cleaning switch 30f is pressed, cleaning water is supplied into the cleaning tank 2, and when the water supply is completed, this cleaning tank cleaning display section is used to notify (notify) the completion of the water supply. 30i is lit. Details will be described later.

  Next, the electrical configuration of the dishwasher of the present invention will be described with reference to FIG. FIG. 3 is a block diagram showing an electrical configuration of the dishwasher in one embodiment of the present invention.

As shown in FIG. 3, the dishwasher 1 includes a control device 28. The control device 28 includes a CPU (Central Processing Unit), a ROM (Read
The microcomputer includes a only memory (RAM), a random access memory (RAM), an interface, and the like (all not shown). Programs for controlling the microcomputer are stored in storage means such as a RAM (not shown) and a ROM (not shown).

The control device 28 is supplied with output signals from the above-described water amount detection sensor 10, hot air temperature sensor 29, hot water temperature sensor 8, lid open / close detection sensor 33, and operation panel 30. Based on these output signals, the control device 28 controls the blower fan 25, the cleaning pump 6a, the drain pump 6b, the hot air heater 26, the hot water heater 7, the buzzer 32, the water supply valve 9, and the drain valve 31. It is like that.

The buzzer 32 notifies (notifies) the user that the cleaning tank cleaning mode is started when, for example, the above-described cleaning tank cleaning switch 30f is pressed, and after the cleaning tank cleaning switch 30f is pressed. When the cleaning water is supplied into the cleaning tank 2 and the water supply is completed, the user is notified (notification) that the water supply has been completed. When the second lid 3 is not opened, the user is informed that the water supply is completed again (notification). Details will be described later.

  Next, cleaning and cleaning of the cleaning tank of the dishwasher according to the present invention will be described with reference to FIGS. FIG. 4 is a flowchart showing the cleaning process of the dishwasher in one embodiment of the present invention, FIG. 5 is a flowchart showing the hand washing cleaning preparation process of FIG. 4, and FIG. 6 is the automatic rinsing of FIG. It is a flowchart which shows a washing | cleaning process.

  This cleaning / cleaning process is a processing process for cleaning and cleaning the inside of the cleaning tank 2. First, in S01, it is determined whether or not the cleaning tank cleaning switch 30f is “ON”. Whether or not the cleaning tank cleaning switch 30f is “ON” is determined based on whether the cleaning tank cleaning switch 30f is pressed by the user from the state where the cleaning tank cleaning switch 30f is “OFF”. If it is determined “YES” in S01, the process proceeds to S02. If it is determined “NO”, the cleaning and cleaning process is returned without doing anything.

  In S02, it is determined whether F (flag) is “1”. This F (flag) is for defining the order of the “hand-washing cleaning preparation process” and the “automatic rinsing cleaning process” in the cleaning process. In other words, this F (flag) is for causing the “hand washing cleaning preparation step” to be executed first and then the “automatic rinsing cleaning step” to be performed thereafter. If it is determined by S02 that “F = 1” is not satisfied (in the case of “NO”), “F = 1” is set in S03, and a hand washing cleaning preparation step (see FIG. 5) described later is performed by S04. Done. Thereby, the preparation for washing the inside of the washing tank 2 by hand is completed by the user, and then the user can wash the washing tank 2 by hand. If “YES” is determined in S02, the process proceeds to S05.

  In S05, it is determined whether the lid 3 of the cleaning tank 2 is closed. Whether the lid 3 of the cleaning tank 2 is closed is determined by a detection signal from the lid open / close detection sensor 33. When it is determined in S05 that the lid 3 of the cleaning tank 2 is not closed (in the case of “NO”), the cleaning and cleaning process is temporarily terminated, and thereafter, until the lid 3 is closed, S01 → The process of S02 → S05 is repeated. If it is determined in S05 that the lid 3 of the cleaning tank 2 is closed (in the case of “YES”), the process proceeds to S06. Thereby, since the automatic rinse cleaning process mentioned later is not performed in the state where the lid 3 of the cleaning tank 2 is not closed, the cleaning water supplied into the cleaning tank 2 may be scattered from the opened lid 3. Absent.

  In S06, it is determined whether the operation start / stop switch switch 30b has been pressed again. Whether or not the operation start / stop switch 30b has been pressed again is determined by whether or not the operation start / stop switch 30b has been pressed (repressed) while the cleaning tank cleaning switch 30f is “ON”. In this way, when the operation start / stop switch 30b is pressed (repressed), a pressing signal (operation signal) by the user is transmitted to the control device 28. And when it is judged as "YES" by S06, it progresses to S07 and the washing tank cleaning display part 30i is changed from lighting to blinking by S07. Thereby, the user can confirm that the automatic rinse cleaning process mentioned later is performed. If it is determined “NO”, the cleaning / cleaning process is temporarily terminated, and thereafter the processes of S01 → S02 → S05 → S06 are repeated until the cleaning tank cleaning switch 30f is pressed (repressed). Thereby, the user can wash and wash the inside of the washing tank 2 until the operation start / stop switch 30b is pressed (repressed) until the interior of the cleaning tank 2 is sufficiently satisfied.

Next, in S08, an automatic rinsing cleaning process described later is performed. In this automatic rinse cleaning process, after the hand washing cleaning preparation process is completed, the detergent and dirt in the cleaning tank 2 that has been hand washed by the user are washed out according to a predetermined process. Details will be described later.

  Next, the hand washing cleaning preparation process of the cleaning cleaning process will be described. FIG. 5 is a flowchart showing the hand washing cleaning preparation process of FIG. This hand washing washing preparation process is a processing process in which the user prepares for washing the inside of the washing tank 2 by hand washing.

  First, in S11, a cleaning mode start notification is performed. Specifically, a buzzer sound is emitted for 10 seconds by the buzzer 32 to notify the user that the cleaning tank cleaning mode is started. Thereby, the user who pressed cleaning tank cleaning switch 30f can know that cleaning tank cleaning mode is started.

  Next, in S12, it is determined whether the lid 3 of the cleaning tank 2 is closed. Whether the lid 3 of the cleaning tank 2 is closed is determined by a detection signal from the lid open / close detection sensor 33. If it is determined in S12 that the lid 3 of the cleaning tank 2 is not closed (in the case of “NO”), the cleaning tank cleaning display portion 30i is turned on in S13, and the user closes the lid of the cleaning tank 2. It is notified that 3 is not closed. The user can know that the lid 3 of the cleaning tank 2 is not closed by turning on (notifying) the cleaning tank cleaning display portion 30i. Thereafter, the processes of S12 → S13 are repeated until the lid 3 is closed. If it is determined in S12 that the lid 3 of the cleaning tank 2 is closed (in the case of “YES”), the process proceeds to S14. Thereby, when the water supply mentioned later is performed, the wash water supplied in the washing tank 2 can be prevented from scattering from the opened lid 3.

  As described above, when the cleaning mode is selected by the cleaning tank cleaning switch 30f, the lid opening / closing detection sensor 33 detects that the lid 3 of the cleaning tank 2 is opened (not detected to be closed). When the cleaning tank cleaning display section 30i is turned on, the user is informed that the lid 3 of the cleaning tank 2 is not closed, and then the lid 3 of the cleaning tank 2 is opened by the lid open / close detection sensor 33. When it is no longer detected (it is detected that it is closed), the notification by turning on the cleaning tank cleaning display unit 30i is terminated, and the cleaning water is supplied into the cleaning tank 2, so that the cleaning tank When the cleaning water is supplied into the water 2, the water can be supplied without splashing out of the cleaning tank 2. Further, if the lid 3 is opened, the user can know that the lid 3 is opened by notifying the cleaning tank cleaning display unit 30i, and thus the lid 3 is securely closed. In this state, cleaning water can be supplied into the cleaning tank 2.

  In S14, the cleaning tank cleaning display part 30i blinks. Thereby, the user can confirm that the driving | operation is performed by cleaning mode.

  Next, in S15, cleaning water is supplied into the cleaning tank 2, and it is determined in S16 whether the cleaning water is supplied to a low water level. Specifically, the water supply valve 9 is opened in S15, cleaning water is supplied into the cleaning tank 2, and it is determined in S16 whether or not the water has been supplied to a low water level based on a signal from the water amount detection sensor 10. Here, the state of “low water level” in the present embodiment is a state of water level above the leftover filter 18, and the water level of the cleaning water in the cleaning tank 2 becomes the lower point water level in the float case 22. State. If it is determined in S16 that the cleaning water is not supplied to a low water level (in the case of “NO”), the cleaning water is continuously supplied into the cleaning tank 2 in S15. Thereafter, the cleaning water is supplied until the water level of the cleaning water becomes a low water level, and the processes of S15 → S16 are repeated. If it is determined in S16 that the cleaning water has been supplied to a low water level (in the case of “YES”), the process proceeds to S17, and the supply of the cleaning water is stopped in S17.

  Next, it is notified by S18 that the supply of the cleaning water to the cleaning tank 2 has been completed. Specifically, a buzzer sound is emitted for 10 seconds by the buzzer 32, and the user is informed that the supply of cleaning water has been completed. Further, along with the water supply completion notification, the cleaning tank cleaning display unit 30i shifts from blinking to lighting, and the user is informed that the supply of the cleaning water has been completed. Thereby, the user can know that the cleaning water has been supplied to a low water level, and then the user can wash the inside of the cleaning tank 2 by hand.

  Next, in S19, “0” (T = 0) is set in the timer (T). Then, in S20, it is determined whether a predetermined time has elapsed since the timer (T) is set to “0”. If it is determined “NO” in S20, the lid 3 of the cleaning tank 2 is opened in S21. When it is determined whether it has been opened, and when it is determined “NO” in S21, it is determined whether or not a predetermined time has elapsed since “0” (T = 0) is set in the timer (T) again in S20. . When it is determined “YES” in S20, that is, when it is determined that a predetermined time has elapsed since the timer (T) is set to “0”, the process is performed in S18 by S22. A water supply completion notification, that is, a buzzer sound is generated by the buzzer 32 for 10 seconds. As described above, after the cleaning water supply is completed, a predetermined time elapses after the timer (T) is set, so that the water supply completion notification, that is, the buzzer 32 generates a buzzer sound for 10 seconds. In S23, “0” (T = 0) is reset in the timer (T), and when a predetermined time has passed again, a water supply completion notification, that is, a buzzer sound is generated by the buzzer 32 for 10 seconds. As described above, unless the lid 3 of the cleaning tank 2 is opened, a water supply completion notification, that is, a buzzer sound is generated by the buzzer 32 for 10 seconds at predetermined time intervals. And if a cover is open | released, it will be judged as "YES" by S21 and a hand-washing washing preparation process will be complete | finished.

  Thus, when it is detected by the water amount detection sensor 10 that the cleaning water has been supplied to a low water level, a notification by the buzzer sound of the buzzer 32 and a notification by turning on the cleaning tank cleaning display unit 30i are made, and then the lid open / close detection sensor When it is detected by 33 that the lid 3 of the cleaning tank 2 is opened, the notification by the buzzer sound of the buzzer 32 and the notification by the lighting of the cleaning tank cleaning display unit 30i are terminated. It is possible to know that the supply of the cleaning water to the water has been completed, and the subsequent hand washing of the cleaning tank 2 by the user can be performed smoothly.

  Next, the automatic rinse cleaning process of the cleaning cleaning process will be described. FIG. 6 is a flowchart showing the automatic rinsing cleaning process of FIG.

  This automatic rinsing cleaning process is a processing process for washing away the detergent and dirt after the user has washed the inside of the cleaning tank 2 by hand. This automatic rinsing process is executed after the hand washing and cleaning preparation process is completed.

  First, in S31, the cleaning water in the cleaning tank 2 is drained, and it is determined whether the drainage is completed in S32. Specifically, the drain valve 31 is opened by S31, the drain pump 6b is driven, and the washing water is drained outside the dishwasher 1 by the driving force of the drain pump 6b. And it is judged by S32 that all the washing water in the washing tub 2 is drained outside the dishwasher 1, the drain valve 31 is closed, and the operation of the drain pump 6b is also stopped. If it is determined by S32 that the drainage has not been completed yet (in the case of “NO”), the cleaning water in the cleaning tank 2 is continuously drained until the drainage is completed. → The process of S32 is repeated. If it is determined in S32 that drainage of the cleaning water has been completed (in the case of “YES”), the process proceeds to S33.

Next, in S33, cleaning water is supplied into the cleaning tank 2, and it is determined in S34 whether the cleaning water has been supplied to a low water level. Specifically, the water supply valve 9 is opened in S33, cleaning water is supplied into the cleaning tank 2, and it is determined in S34 whether or not the water has been supplied to a low water level by a signal from the water amount detection sensor 10. When it is determined that the cleaning water is not supplied to a low water level (in the case of “NO”), the cleaning water is continuously supplied into the cleaning tank 2 through S34. Thereafter, the cleaning water is supplied until the water level of the cleaning water becomes low, and the processing of S33 → S34 is repeated. If it is determined in S34 that the cleaning water has been supplied to a low water level (in the case of “YES”), the process proceeds to S35, and the supply of the cleaning water is stopped in S35.

  In S36, "0" (T = 0) is set in the timer (T), and in S37, the cleaning pump 6a is intermittently operated and the cleaning water is intermittently injected from the injection nozzle 5 (intermittent injection). More specifically, in S37, the cleaning pump 6a is stopped and then stopped (0.8 seconds) and operated (1. 0.8 second operation → 1.0 second pause → 0.8 second operation). 0 second) is repeated, the cleaning pump 6 a is intermittently operated, and the cleaning water is intermittently injected from the injection nozzle 5. In S38, it is determined whether 30 seconds have elapsed since the timer (T) was set to “0”. In S38, it is determined whether 30 seconds have elapsed since the timer (T) was set in “0”. If this is the case, the intermittent injection is completed in S39, and the process proceeds to S40.

  In S40, the cleaning water in the cleaning tank 2 is drained, and it is determined whether the drainage is completed in S41. Specifically, the drain valve 31 is opened by S40, the drain pump 6b is driven, and the washing water is drained outside the dishwasher 1 by the driving force of the drain pump 6b. And it is judged by S41 that all the washing water in the washing tank 2 is drained out of the dishwasher 1, the drain valve 31 is closed, and the operation of the drain pump 6b is also stopped. If it is determined by S41 that the drainage has not been completed yet (in the case of “NO”), the cleaning water in the cleaning tank 2 is continuously drained until the drainage is completed. → The process of S41 is repeated. If it is determined in S41 that the cleaning water has been drained (in the case of “YES”), the process proceeds to S42.

  Thus, the cleaning pump 6a is controlled to operate intermittently, and the cleaning water is intermittently injected from the injection nozzle 5, so that the cleaning water intermittently injected from the injection nozzle 5 becomes wavy, The detergent, dirt, etc. in the washing tank 2 after being washed by hand with the wavy washing water can be surely washed off.

  In S42, it is notified that the drainage of the washing water has been completed. Specifically, the buzzer 32 emits a buzzer sound for 10 seconds to notify the user that the drainage of the cleaning water has been completed. Further, along with the water supply completion notification, the flashing of the cleaning tank cleaning display unit 30i is turned off, and the user is informed that the drainage of the cleaning water has been completed. Thereby, the user can know that washing water was drained. Then, in S43, the flag (F) is set to 0 (F = 0), and the automatic rinsing process is completed.

  In this manner, after the hand washing by the user is completed and the washing water is drained in response to the operation signal from the user (“YES” in S06), the washing water is again supplied to the low water level, and the washing is performed. Since the pump 6a is operated and the supplied wash water is jetted from the jet nozzle 5 and then the wash water is drained, after the user finishes the hand washing in the washing tank 2 automatically Thereafter, the rinsing in the cleaning tank 2 can be performed. Thereby, the inside of the washing tank 2 can be cleaned and cleaned quickly and smoothly.

  As described above, when the cleaning mode is selected by the cleaning tank cleaning switch 30f, since the cleaning water is supplied to a low water level, the user puts the tap water contained in the bucket into the cleaning tank 2. There is a risk that water will leak from the bucket, water will overflow outside the washing tub 2, and water may enter the hot air heater 26 and the blower fan 25 through the air passage and cause leakage. Disappear. And since the supplied wash water is drained in response to an operation signal from the user, the user can clean the inside of the washing tank 2 sufficiently until then. Thereby, for example, even when dirt such as minerals or calcium adheres to the cleaning tank 2, the user can wash the inside of the cleaning tank 2 until he / she is satisfied.

The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

It is a figure which shows the internal structure of the dishwasher in one Embodiment of this invention. It is a figure which shows the operation panel of the dishwasher in one Embodiment of this invention. It is a block diagram which shows the electric constitution of the dishwasher in one Embodiment of this invention. It is a flowchart which shows the cleaning washing process of the tableware washing machine in one Embodiment of this invention. It is a flowchart which shows the hand-washing washing preparation process of FIG. It is a flowchart which shows the automatic rinse washing | cleaning process of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Tableware washing machine 2 Washing tank 3 Lid 5 Injection nozzle 6 Pump 6a Washing pump 6b Drain pump 7 Hot water heater 9 Water supply valve 10 Water quantity detection sensor
12 Washing water reservoir
13 Water inlet 23 Float 25 Blower fan 26 Warm air heater 28 Control device 30 Operation panel 30f Cleaning tank cleaning switch 30i Cleaning tank cleaning display section
31 Drain valve 32 Buzzer 33 Cover open / close detection sensor

Claims (5)

A washing tank for storing tableware,
Water supply means for supplying cleaning water into the cleaning tank;
A washing water reservoir for storing the washing water supplied by the water supply means;
An injection nozzle for injecting the wash water stored in the wash water reservoir toward the dishes;
A pump for pumping the cleaning water of the cleaning water reservoir to the spray nozzle;
Cleaning mode selection means for selecting a cleaning mode for cleaning the inside of the cleaning tank;
Control means for controlling the pump,
When the cleaning mode is selected by the cleaning mode selection means, the cleaning water is supplied to a predetermined water level by the water supply means, and the supplied cleaning water is drained in response to a predetermined operation signal. And dishwasher.   After the wash water is drained in response to the operation signal, the wash water is supplied again to a predetermined water level by the water supply means, the pump is operated, and the re-supply water wash water supplied from the spray nozzle is supplied. The dishwasher according to claim 1, wherein the dishwasher is sprayed and drained after that. Lid opening detection means for detecting whether the lid of the washing tank is opened;
A lid opening notification means for notifying when the lid opening detection means detects that the lid of the cleaning tank is opened;
When the cleaning mode is selected by the cleaning mode selection means, if the lid opening detection means detects that the lid of the cleaning tank is opened, the lid opening notification means notifies, and then the When it is no longer detected by the lid opening detection means that the lid of the cleaning tank is opened, the notification by the lid opening notification means is terminated, and the cleaning water is supplied into the cleaning tank by the water supply means. The dishwasher according to claim 1, wherein A water amount detecting means for detecting whether the washing water has been supplied to a predetermined water level;
Water supply completion notifying means for notifying when the water amount detecting means detects that the wash water has been supplied to a predetermined water level;
When the cleaning mode is selected by the cleaning mode selection means, when the water amount detection means detects that the cleaning water has been supplied to a predetermined water level, the water supply completion notification means is notified, and then the lid opening detection means The dishwasher according to claim 1, wherein the notification by the water supply completion notifying unit is terminated when it is detected that the lid of the cleaning tank is opened. 3. The dishwasher according to claim 2, wherein the control means controls the pump to be intermittently operated so that the re-feed water washing water is intermittently injected from the injection nozzle.

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