JPH0819500A - dishwasher - Google Patents

Abstract

(57) [Summary] [Purpose] In a dishwasher for washing dishes by spraying washing water on the dishes stored in the washing tank, when the thermostat for overheat prevention operates, it depends on the return operation of the thermostat. Without doing so, do not perform load operation uniquely. [Structure] Washing water or air in a washing tank 1 that stores dishes 2 is heated by a heater 7, and when a predetermined temperature in the washing tank 1 is detected, the thermostat 13 cuts off electricity to the heater 7, and the thermostat 13 operates. The information is stored in the storage means 15. The control means 16 is for cleaning the tableware 2,
In addition to controlling a series of program sequences for the rinsing and drying processes, the heater 7 is uniquely not operated when the storage means 15 can know that the thermostat 13 has operated in the past.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dishwasher for washing dishes by spraying washing water on the dishes stored in a washing tank.

[0002]

2. Description of the Related Art In recent years, there has been proposed a dishwasher equipped with a thermostat (excessive temperature rise preventing means) that shuts off energization of a load when the temperature in a washing tank reaches a predetermined temperature.

Conventionally, this type of dishwasher has been constructed as shown in FIG. The configuration will be described below.

As shown in the figure, a cleaning tank 1 stores dishes 2 inside and stores cleaning water at the bottom. Cleaning nozzle 3
Is rotatably supported in the washing tank 1 and spouts washing water toward the tableware 2. The washing pump 4 sends the washing water to the washing nozzle 3, and the washing pump 4 uses a motor 5
Driven by. The water level sensor 6 detects the water level in the cleaning tank 1 and outputs it as an electric signal. The heater 7 is arranged at the bottom of the cleaning tank 1 to heat the cleaning water. The thermistor (temperature detection means) 8 is attached to the bottom of the cleaning tank 1 so as to be in close contact with the outside, and detects the temperature of the cleaning water.

The blower fan 9 blows out the steam in the cleaning tank 1 and is discharged from the exhaust port 10 to the outside of the machine. The tableware basket 11 is for arranging the tableware 2 and is arranged in the cleaning tank 1. The operation unit 12 sets a series of program sequences for cleaning, rinsing, and drying processes. When the thermostat (excess temperature rise preventing means) 13 detects a predetermined temperature (for example, 100 ° C.) in the cleaning tank 1, the heater 7 is turned off. The control unit 14 controls the sequential operation of the program sequence set by the operation unit 12.

To explain the operation in the above configuration, the user arranges the dishes 2 in the dish basket 11 and stores them in the washing tank 1, sets the program sequence on the operation unit 12, and puts the detergent into operation. When starting, first, a predetermined amount of tap water is supplied to the bottom of the cleaning tank 1 until the water level sensor 6 detects a predetermined water level. Then, the motor 5 and the heater 7 are energized, and the washing water is heated and jetted from the washing nozzle 3 toward the dishes 2 by the washing pump 4. At this time, the temperature of the wash water is detected by the thermistor 8, and the control means 14 always grasps the temperature of the wash water. When the temperature of the cleaning water reaches a predetermined temperature and a predetermined time has elapsed from the start of cleaning, the control means 14 ends the cleaning process and once drains the cleaning water.

Next, tap water is newly supplied, and the same operation as the above-described washing step is performed for several minutes to drain the water. After repeating this rinsing step several times, the same operation as the washing step called a heat rinsing step is performed, and when the predetermined temperature is reached, the operation is finished and drained. Finally, the blower fan 9 is operated to discharge the steam in the cleaning tank 1 to the outside of the machine, and at the same time, the heater 7 is intermittently energized to heat the tableware 2 and dry the attached water droplets.

In the above-mentioned successive series of operations, due to factors such as failure of the heater drive circuit and the thermistor 8 during heating by the heater 7, the temperature in the cleaning tank 1 cannot be adjusted properly and the temperature in the cleaning tank 1 is not adjusted. If it becomes extremely hot,
This will be described with reference to the flowchart of FIG. 10. When the thermostat 13 detects an abnormal temperature (100 ° C.) in the cleaning tank 1 in step 20 of FIG. 10, the thermostat 13 forcibly shuts off energization of the heater 7 in a circuit manner. However, in step 21, the control means 14 knows that the thermostat 13 has operated, and temporarily interrupts the energization of the heater 7, and notifies in step 22 of the abnormality.

[0009]

In such a conventional dishwasher, when the temperature in the cleaning tank 1 becomes abnormally high due to a failure of the heater drive circuit or the thermistor 8 of the thermostat 13, Although the power supply to the heater 7 is temporarily cut off, when the temperature in the cleaning tank 1 decreases with the passage of time, the power supply to the heater 7 is restarted.
The user not only cannot know the failure of the heater drive circuit and the thermistor 8, but also has a problem that the dishes 2 in the cleaning tank 1 are deformed or burned due to high temperature.

The present invention solves the above problems. When the heater drive circuit or thermistor fails, the temperature inside the cleaning tank becomes abnormally high, and when the thermostat operates, the temperature inside the cleaning tank increases with time. The first purpose is to prevent the heater from being energized even when the temperature is lowered.

A second object is to cancel the abnormality after replacing the heater driving circuit or the thermistor.

A third object of the present invention is to eliminate the problem that the thermostat operates again due to the high temperature in the cleaning tank even if the abnormality is canceled when the thermostat has just started to operate. There is.

Further, when the temperature inside the cleaning tank becomes abnormally high and the thermostat operates due to a failure of the heater drive circuit or the thermistor under conditions such as momentary power failure, this information is held stably. A fourth object is to prevent the heater from being energized even if the temperature in the cleaning tank decreases with the passage of time.

Further, under the condition of being affected by noise, the heater driving circuit and the thermistor have failed, so that the temperature in the cleaning tank becomes abnormally high, and the thermostat operates and cannot hold this information. Even in such a case, even if the temperature in the cleaning tank decreases with time, it is necessary to prevent the heater from being energized.
The purpose is.

Further, even when the storage means itself is replaced and the past information of the thermostat which should be stored in advance in the storage means is indefinite, the heater is appropriately energized or the heater is turned on according to the operation of the thermostat. The sixth purpose is to prevent the energization of the above.

[0016]

In order to achieve the first object, the present invention provides a cleaning tank for storing dishes, a heater for heating cleaning water or air in the cleaning tank, and the cleaning tank. A thermostat that cuts off the power supply to the load when a predetermined temperature inside is detected, a storage unit that stores that the thermostat has operated, and a control unit that controls a series of program sequences for cleaning, rinsing, and drying the dishes. And, when the control means can know that the thermostat has operated in the past by the storage means,
The first problem solving means is that the operation of the load is not uniquely performed.

Further, in order to achieve the second object, in addition to the above-mentioned first problem solving means, an operation section for setting a program sequence is provided, and the control means is that the thermostat has operated in the past by the storage means. The second problem solving means is that the contents of the storage means are initialized when the user knows the above and performs a predetermined operation on the operation section.

In order to achieve the third object, in addition to the above second means for solving the problem, a thermistor for detecting the temperature in the cleaning tank is provided, and the control means uses the memory means to operate the thermostat in the past. If a predetermined time elapses from the time when the thermostat operates, or if a predetermined temperature is detected by the thermistor, the contents of the storage means are stored by performing a predetermined operation on the operation unit. The initialization is the third means for solving the problem.

In order to achieve the fourth object, in addition to the first problem solving means, a plurality of storage means for storing the operation of the thermostat are provided, and the control means includes the plurality of storage means. A fourth problem solving means is that, when the storage means can know that the thermostat has operated in the past, the load is not uniquely operated.

In order to achieve the fifth object, the control means of the first problem solving means reports an abnormality of the storage means when the value stored in the storage means exceeds a predetermined range set in advance. However, the fifth problem solving means is that the load operation is not uniquely performed.

Further, in order to achieve the sixth object, in addition to the above-mentioned first problem solving means, a use number storage means for storing the use number of the storage means is provided, and the control means has the use number storage means. According to the sixth problem solving means, the contents of the storage means are uniquely initialized when the storage means is unused.

[0022]

According to the first means for solving the above problems, the present invention provides:
If the temperature inside the cleaning tank becomes abnormally high and the thermostat operates due to a failure of the heater drive circuit or the thermistor, this information is stored in the storage means, and the temperature inside the cleaning tank will change over time. Even if the temperature drops, the control unit can uniquely prevent the heater from being energized based on the information in the storage unit.

Further, according to the second means for solving the problem, the abnormality can be canceled by exchanging the heater driving circuit and the thermistor and then performing a predetermined operation of the switch of the operation section.

According to the third means for solving the problems, when the thermostat operates, the timer measurement is carried out from this point until a predetermined time elapses, or until the thermistor detects a sufficiently low temperature from the operating temperature of the thermostat. It is possible to prevent the error from being canceled even if the specified operation is performed, and if the thermostat is operating soon, the thermostat will restart due to the high temperature inside the cleaning tank even if the error is cleared. It is possible to solve the problem of being lost.

According to the fourth means for solving the problems, when the heater driving circuit or the thermistor fails, the temperature inside the cleaning tank becomes abnormally high and the thermostat operates, and this information is stored in a plurality of storage means. This information can be stored stably when the thermostat operates even under conditions such as an instantaneous power failure, even if the temperature in the cleaning tank drops over time. It is possible not to energize the heater.

Further, according to the fifth problem solving means, when the content of the storage means exceeds a predetermined range, the abnormality of the storage means itself is notified to the user, and the heater is not uniquely energized. If the heater drive circuit or thermistor fails under the condition of being affected by noise, the temperature inside the cleaning tank becomes abnormally high and the thermostat operates, and this information cannot be retained. Also in the above, even if the temperature in the cleaning tank decreases with the passage of time, it is possible to prevent the heater from being energized.

Further, the sixth problem solving means uniquely initializes the past information even when the past information of the thermostat to be stored in the storage means is exchanged and the thermostat's past information is indefinite. It is possible to monitor the operation of the thermostat again and appropriately control the energization of the heater according to the operation.

[0028]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIG. The same components as those of the above-mentioned conventional example are designated by the same reference numerals and the description thereof will be omitted.

As shown in the figure, the storage means 15 stores that the thermostat (overtemperature rise prevention means) 13 has operated. The control means 16 is for cleaning the tableware 2,
In addition to controlling a series of program sequences for the rinsing and drying processes, the heater (load) 7 is uniquely not operated when the storage unit 15 can know that the thermostat 13 has operated in the past.

The operation of the above configuration will be described with reference to FIG. Since the series of sequential operations of the cleaning, rinsing and drying steps of the tableware 2 by the control means 16 are the same as in the conventional example, the description thereof will be omitted and the thermostat 13 will be omitted.
A process of detecting an abnormal temperature in the cleaning tank 1 and processing by the above will be described.

The user stores the tableware 2 in the washing tank 1,
When the program sequence is set by the operation unit 12 and the program sequence is started, the variable A indicating the state of the thermostat 13 stored in the past is called as the current variable A in step 23, and A = 0 in step 24.
In the case of, knowing that the thermostat 13 did not work in the past, step 20, step 21, step 22
As shown in the conventional example, the thermostat 13 is in the cleaning tank 1
If an abnormally high temperature (100 ° C.) is detected, the heater 7 is de-energized to notify the abnormality, then A = 1 is set in step 25, and the current value of A is stored in step 26 in step 26. Remember.

On the other hand, if A = 1 at step 24,
Knowing that the thermostat 13 has operated in the past, step 21, step 22, step 25, step 26
After that, the power supply to the heater 7 is unconditionally cut off.

As a result, when the temperature in the cleaning tank 1 becomes abnormally high due to the failure of the heater drive circuit or the thermistor 8 and the thermostat 13 operates, this information is stored in the storage means 13 for a time. Even if the temperature in the cleaning tank 1 falls below the above-mentioned high temperature value with the lapse of time, the control means 16 can uniquely prevent the heater 7 from being energized based on the information in the storage means 15. .

In the above embodiment, the thermostat 1
Although the operation temperature of No. 3 and the specific numerical value and timing of the variable A to the storage means 15 are shown, this does not particularly limit the abnormal temperature detection method or processing means in the cleaning tank 1 by the thermostat 13.

Next, a second embodiment of the present invention will be described. The control means 16 in FIG. 1 learns from the storage means 15 that the thermostat 13 has operated in the past,
In addition, when a predetermined operation is performed on the operation unit 12, for example, when the course setting switch and the drying time setting switch are simultaneously pressed, the contents of the storage unit 15 are initialized. The other structure is the same as that of the first embodiment.

The operation of the above configuration will be described with reference to FIG. It should be noted that steps 20 to 26 in FIG. 3 are the same as those in the above-described first embodiment, and a description thereof will be omitted.

When the variable A = 1 at step 24, the variable A = 0 at step 28 only when the course setting switch and the drying time setting switch which are the predetermined switches of the operation unit 12 are simultaneously pressed at step 27. As a result, by storing the value of the variable A in the storage means 15 in step 26, the past operation record contents of the thermostat 13 can be cleared.

Thus, after replacing the heater drive circuit or the thermistor 8 or the like, the thermostat 1 of the past can be operated by performing a predetermined operation such as a switch of the operation unit 12.
It is possible to clear the operation record contents of No. 3, that is, to cancel the abnormality.

Next, a third embodiment of the present invention will be described. The control means 16 in FIG. 1 learns from the storage means 15 that the thermostat 13 has operated in the past,
Moreover, the thermistor 8 is used to set a predetermined temperature (for example, 40
(C) is detected, the contents of the storage unit 15 are initialized by performing a predetermined operation on the operation unit 12. The other structure is the same as that of the second embodiment.

The operation of the above configuration will be described with reference to FIG. It should be noted that steps 20 to 28 in FIG. 4 are the same as those in the second embodiment described above, and a description thereof will be omitted.

When the variable A = 1 in step 24, the temperature inside the cleaning tank 1 is set to 40 by the thermistor 8 in step 29.
When the temperature is lower than or equal to ℃, the abnormality can be canceled by performing the predetermined operation in step 27, while the temperature in the cleaning tank 1 is set to 40 by the thermistor 8 in step 29.
If the temperature is not detected to be equal to or lower than 0 ° C., the power supply to the heater 7 is uniquely cut off in step 21.

As a result, when the thermostat 13 operates, the abnormality cannot be canceled even if a predetermined operation is performed until a sufficiently low temperature is detected from the temperature at which the thermostat 13 operates, so the thermostat 13 operates. In the short time, even if the abnormality is canceled, the problem that the thermostat 13 operates again due to the high temperature inside the cleaning tank 1 can be solved.

In the above embodiment, the thermostat 1
Although the example in which the abnormality cannot be canceled by performing the predetermined operation from the time when the thermistor 3 operates until the thermistor 8 detects the predetermined temperature is specifically shown, the thermostat 13 operates this. It may not be possible to cancel the abnormality even if a predetermined operation is performed until a predetermined time (time from the temperature at which the thermostat 13 operates to a sufficiently low temperature) elapses from the time when the operation is performed.

Next, a fourth embodiment of the present invention will be described. The storage means 15 in FIG. 1 comprises a plurality of storage means 15a, 15b, 15c (none of which are shown), and the control means 16 can know that the thermostat 13 has operated in the past by the plurality of storage means. In this case, the heater (load) 7 is not uniquely operated. The other structure is the same as that of the first embodiment.

The operation of the above configuration will be described with reference to FIG. It should be noted that steps 20 to 26 in FIG. 5 are the same as those in the first embodiment described above, and a description thereof will be omitted.

At the same time as calling the variable A indicating the state of the thermostat 13 stored in step 23 as the current variable A in step 23, the variable B indicating the state of the thermostat 13 stored in step 23-1 this time is set at the same time. , The variable C indicating the state of the thermostat 13 stored in the past in step 23-2 is called as the current variable C, and the variable A and the variable in step 24, step 24-1 and step 24-2. B or variable C
If any of the above is 1, it is known that the thermostat 13 has operated in the past and the process proceeds to step 21.

On the other hand, when the variable A, the variable B, or the variable C is 0 in step 24, step 24-1, and step 24-2, when the thermostat 13 detects 100 ° C. in step 20, step 21, step Two
2 through step 25, step 25-1 and step 25-2, the variable A, the variable B or the variable C is set to 1, and step 26, step 26-1 and step 2
6-2 stores the respective values in the storage means 15a, 15b, 15c.
To memorize.

As a result, when the heater driving circuit or the thermistor 8 fails and the temperature inside the cleaning tank 1 becomes abnormally high and the thermostat 13 operates, this information is stored in a plurality of storage means. As a result, even when the thermostat 13 operates even under conditions such as an instantaneous power failure, this information can be held stably, and as a result, the temperature in the cleaning tank 1 becomes lower than the above-mentioned high temperature over time. Also, it is possible not to energize the heater 7.

Next, a fifth embodiment of the present invention will be described. When the value stored in the storage unit 15 exceeds a predetermined range set in advance, the control unit 16 in FIG. 1 notifies the abnormality of the storage unit 15 and uniquely prevents the heater (load) 7 from operating. There is. The other structure is the same as that of the first embodiment.

The operation of the above configuration will be described with reference to FIG. It should be noted that steps 20 to 26 in FIG. 6 are the same as those in the first embodiment described above, and a description thereof will be omitted.

If the value of the variable A called in steps 24 and 30 is out of the range of 0 or 1, it is notified in step 31 that the memory (storage means 15) is abnormal, and step 21 In the subsequent processing, the electricity is not uniquely supplied to the heater 7.

As a result, even when the content of the storage means 15 exceeds a predetermined range, the abnormality of the storage means 15 itself is notified to the user, and the heater 7 is not uniquely energized. If the heater drive circuit or the thermistor 8 fails under the influence of noise, the temperature inside the cleaning tank 1 becomes abnormally high and the thermostat 13 operates, and this information cannot be retained. Also in the above, even if the temperature in the cleaning tank 1 becomes lower than the above-mentioned high temperature with the passage of time, it is possible not to energize the heater 7.

Next, a sixth embodiment of the present invention will be described with reference to FIG. The same components as those in the first embodiment are designated by the same reference numerals and the description thereof will be omitted.

As shown in the figure, the number-of-uses storage means 17
Stores the number of times the control means 18 or the storage means 19 has been used. The control unit 18 uniquely initializes the contents of the storage unit 19 when the storage unit 19 is not used by the use count storage unit 17.

The operation of the above configuration will be described with reference to FIG. It should be noted that steps 20 to 26 in FIG. 8 are the same as those in the first embodiment described above, and a description thereof will be omitted.

A variable D indicating the number of times the control means 17 or the storage means 18 stored in the past in step 32 is used.
Is called as the current variable D, and if the value of the variable D is 0 in step 33, that is, if the control means 18 or the storage means 19 has never been used, the past operation of the thermostat 13 is executed in step 34. The variable A indicating the record is cleared, and the value of the variable A is stored in the storage means 19 in step 35.
In step 36, and set the variable D indicating the number of times of use to 1 in step 36.
In step 37, the variable D is stored in the number-of-uses storage unit 1
7 is stored.

As a result, even when the storage means 19 itself is replaced and the past information of the thermostat 13 that should be stored in advance in the storage means 19 is indefinite, the past information is uniquely initialized and the thermostat 13 is re-established. It is possible to monitor the operation of No. 2 and appropriately control the energization of the heater 7 according to the operation.

[0058]

As is apparent from the above embodiments, according to the present invention, a washing tank for storing dishes, a heater for heating washing water or air in the washing tank, and a predetermined inside of the washing tank are provided. When a temperature is detected, a thermostat (excessive temperature rise prevention means) that shuts off the energization of the load, a storage means that stores that the thermostat has operated, a dishwasher for washing,
And a control means for controlling a series of program sequences of rinsing and drying steps, and the control means does not uniquely perform the load operation when the storage means can know that the thermostat has operated in the past. Therefore, if the temperature inside the cleaning tank becomes abnormally high and the thermostat operates due to a failure of the heater drive circuit or the thermistor, this information is stored in the storage means and the cleaning is performed over time. Even if the temperature in the tank falls below the above-mentioned high temperature, the control means, based on the information of the storage means,
It is possible to uniquely prevent the heater from being energized.

Further, the control means is provided with an operation section for setting a program sequence, and the control means knows that the thermostat has operated in the past by the storage means, and performs a predetermined operation on the operation section, the operation means stores the stored information in the storage means. Since the contents are initialized, the abnormality can be canceled by exchanging the heater drive circuit and the thermistor and then performing a predetermined operation such as a switch of the operation unit.

In addition, a thermistor for detecting the temperature in the cleaning tank is provided, and the control means knows from the storage means that the thermostat has operated in the past, and when a predetermined time has elapsed from the time when the thermostat operated, or When the predetermined temperature is detected by the thermistor, the contents of the storage means are initialized by performing a predetermined operation on the operation unit.When the thermostat operates, the timer measurement is performed from this point. Since the error cannot be canceled even if the specified operation is performed until the specified time elapses or until a sufficiently low temperature is detected from the temperature at which the thermostat operates, an error will occur if the thermostat is just operating. If the thermostat operates again because the temperature inside the cleaning tank is high, It is possible to solve the cormorant problem.

In addition, the control means is provided with a plurality of storage means for storing the operation of the thermostat, and when the control means is able to know that the thermostat has operated in the past by the plurality of storage means, the load is uniquely set. If the heater drive circuit or thermistor fails and the temperature inside the cleaning tank becomes abnormally high and the thermostat operates, this information is stored in multiple storage means. If the thermostat operates even under conditions such as momentary power failure, this information can be held stably, and over time, the temperature in the cleaning tank will drop below the above-mentioned high temperature. Also,
It is possible not to energize the heater.

Further, when the value stored in the storage means exceeds the preset predetermined range, the control means informs the abnormality of the storage means so as not to uniquely perform the load operation. Even when the content of the heater exceeds the predetermined range, the abnormality of the storage means itself is notified to the user and the heater is not uniquely energized. Even if the temperature in the cleaning tank becomes abnormally high and the thermostat operates due to the failure of the drive circuit or the thermistor and this information cannot be retained, the temperature in the cleaning tank will increase over time. It is possible to prevent the heater from being energized even when the temperature falls below the above high temperature.

Further, the number-of-uses storage means for storing the number-of-uses of the storage means is provided, and the control means uniquely initializes the contents of the storage means when the storage means is unused by the number-of-uses storage means. Therefore, even when the storage means itself is replaced and the past information of the thermostat that should be stored in advance in the storage means is indefinite, the past information is uniquely initialized and the operation of the thermostat is monitored again. The energization of the heater can be appropriately controlled according to the operation.

[Brief description of drawings]

FIG. 1 is a system configuration diagram of a dishwasher according to a first embodiment of the present invention.

FIG. 2 is a flow chart showing the operation and processing steps of the temperature rise prevention means of the dishwasher.

FIG. 3 is a flow chart showing the operation of the temperature rise prevention means of the dishwasher and the process of processing according to the second embodiment of the present invention.

FIG. 4 is a flow chart showing the operation of the temperature rise prevention means of the dishwasher and the process of processing according to the third embodiment of the present invention.

FIG. 5 is a flow chart showing the operation of the temperature rise prevention means of the dishwasher and the process of processing according to the fourth embodiment of the present invention.

FIG. 6 is a flow chart showing the operation of the temperature rise prevention means of the dishwasher and the process of processing according to the fifth embodiment of the present invention.

FIG. 7 is a system configuration diagram of a dishwasher according to a sixth embodiment of the present invention.

FIG. 8 is a flow chart showing the operation and processing steps of the temperature rise prevention means of the dishwasher.

[Fig. 9] System configuration diagram of a conventional dishwasher

FIG. 10 is a flow chart showing the operation and processing steps of the temperature rise prevention means of the dishwasher.

[Explanation of symbols]

 1 Cleaning Tank 2 Tableware 7 Heater (Load) 13 Thermostat (Means for Preventing Excessive Temperature) 15 Storage Means 16 Control Means

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yu Taniguchi 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd.

Claims (6)

[Claims] 1. A washing tank for storing dishes, a heater for heating washing water or air in the washing tank, and a temperature rise prevention for shutting off energization to a load when a predetermined temperature in the washing tank is detected. Means, a storage means for storing that the temperature excessive rise prevention means has operated, and a control means for controlling a series of program sequences of washing, rinsing and drying steps of the tableware, the control means comprising: A dishwasher in which the operation of the load is not uniquely performed when it is known from the storage means that the overheat prevention means has operated in the past. 2. An operation unit for setting a program sequence, wherein the control unit knows from the storage unit that the temperature excessive rise prevention unit has operated in the past, and performs a predetermined operation on the operation unit, The dishwasher according to claim 1, wherein the contents of the storage means are initialized. 3. The temperature detecting means for detecting the temperature in the cleaning tank is provided, and the control means knows from the storage means that the excessive temperature rise preventing means has operated in the past, and the excessive temperature rise preventing means has operated. When a predetermined time has elapsed from the time point, or when a predetermined temperature is detected by the temperature detecting means,
The dishwasher according to claim 2, wherein the content of the storage means is initialized by performing a predetermined operation on the operation unit. 4. A plurality of storage means for storing the operation of the overheat protection means are provided, and the control means knows that the overheat protection means has operated in the past by the plurality of storage means. The dishwasher according to claim 1, wherein when it is obtained, the load operation is not uniquely performed. 5. The control means, when the value stored in the storage means exceeds a predetermined range set in advance, notifies the abnormality of the storage means and does not uniquely perform the load operation. Dishwasher. 6. The number-of-uses storage means for storing the number-of-uses of the storage means is provided, and the control means uniquely initializes the contents of the storage means when the storage means is unused by the number-of-uses storage means. The dishwasher according to claim 1, configured to do so.