JP3403919B2 - Dishwashing system - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dishwashing system in which a water heater and a dishwashing device are connected via a hot water supply pipe, and the dishwashing device receives hot water from the water heater to wash dishes. Regarding

[0002]

2. Description of the Related Art Generally, a dishwashing apparatus of this type is equipped with a washing chamber for holding dishes to be washed and a storage tank for storing a predetermined amount of water. A predetermined amount of water is stored in and the water is jetted toward the dishes through a nozzle by a washing pump to perform washing. The water after cleaning is stored again in the storage tank, and the above operation is repeated. During that time, drainage and water supply are performed appropriately.

When dishwashing is performed in this type of dishwashing apparatus, hot water at an optimum temperature (generally set to 60 ° C.) is used to improve washing efficiency. Therefore, a heater is provided in the storage tank to heat and keep the water in the storage tank at an optimum temperature for cleaning.

In recent years, there has been known a dishwashing system in which a water heater is connected to a dishwashing apparatus and the hot water of the water heater is used when washing dishes. A water heater is well known as a facility for supplying hot water to a sink in a bath or a kitchen, and this kind of dish washing system is one in which a dish washing device is additionally connected to a hot water pipe of the water heater. As a result, hot water having a temperature suitable for dishwashing can be supplied to the dishwashing apparatus, and thus the heating time by the heater in the storage tank of the dishwashing apparatus can be significantly shortened and the operation time of dishwashing can be reduced. It can be shortened.

[0005]

By the way, the water heater in this type of dishwashing system is provided with a temperature setting means for setting a desired hot water temperature by the operation of the user, and the dishwasher is operated during operation. Regardless of whether or not it is possible for the user to supply hot water from the currant in the bath or kitchen at the desired temperature. Further, in this type of dishwashing system, communication is performed between the water heater and the dishwashing device, and when the dishwashing device starts operating, the water heater is turned on regardless of the set temperature. It is conceivable to provide setting temperature changing means for changing the setting temperature so that hot water is supplied at a temperature suitable for washing dishes (for example, 60 ° C).

However, in the case where the temperature setting by the temperature setting means is prioritized in consideration of usability for the user, even if the set temperature is changed by the set temperature changing means to a temperature suitable for dish washing at the start of dish washing. While the washing water at the temperature suitable for dishwashing is being supplied from the water heater to the dishwashing device, the user operates the temperature setting means so that the dishwasher has the desired temperature, When hot water supply is started, the hot water supply temperature from the water heater is set to a temperature desired by the user, and washing water having a temperature not suitable for dishwashing may be supplied to the dishwashing device.

At this time, if the temperature of the washing water supplied from the water heater to the dishwashing apparatus is extremely high (for example, 80 ° C. used for hot water in a bathtub, etc.), the protein adhering to the dishes will be There is an inconvenience that it solidifies depending on the temperature of the hot water and the adhesion state to the tableware becomes strong, making it difficult to wash.

In order to eliminate such inconvenience, the present invention provides a dishwashing system capable of washing dishes without trouble even if hot water of an extremely high temperature is supplied to the storage tank of the dishwashing apparatus. And

[0009]

To achieve the above object, a first aspect of the present invention comprises a water heater and a dishwasher connected to the water heater via a hot water pipe. The dishwasher includes a water supply valve provided in the hot water supply pipe, a storage tank for storing hot water supplied through the water supply valve as washing water, and a water supply valve opened at the start of a dishwashing operation. A dishwashing system, comprising: a washing operation control means for storing washing water in a storage tank and washing the dishes with the washing water stored in the storage tank;
The cleaning device is a communication means that communicates operating information with each other.
The water heater comprises a temperature setting means capable of setting a hot water supply temperature and a water flow detecting means, and the dishwashing device includes a draining means for draining the cleaning water in the storage tank,
Temperature detection that detects the temperature of the cleaning water stored in the storage tank
When the temperature detected by the output means and the temperature detection means is equal to or higher than a predetermined temperature, the dishwashing operation is put in a standby state, and the water heater.
No water flow is detected for a predetermined time by the water flow detection means of
If the water is heated, stop the operation of the water heater and
After making it possible to supply water for cleaning,
By opening the water supply valve while moving the
The non-heated cleaning water is supplied from the water heater to
Cooling operation control means for lowering the temperature of the cleaning water and releasing the standby state of the cleaning operation when the temperature detected by the temperature detection means becomes lower than a predetermined temperature.

According to the first aspect of the present invention, when the operation of the dishwasher is started, the water supply valve is first opened by the control of the washing operation control means. When the water supply valve opens, the hot water supplied from the water heater is stored in the storage tank of the dishwasher as cleaning water. The storage tank is provided with the temperature detecting means, and the temperature detecting means detects the temperature of the cleaning water stored in the storage tank. When the temperature of the washing water detected by the temperature detecting means is lower than a predetermined temperature (for example, 70 ° C.), the washing operation of the tableware is continued under the control of the washing operation control means.

When the temperature of the cleaning water detected by the temperature detecting means is equal to or higher than a predetermined temperature (for example, 70 ° C.), the cooling operation control means operates. That is, the above
The cooling operation control means first puts the tableware washing operation under the control of the washing operation control means in a standby state, and then operates the water heater.
To stop. Stop the operation of the water heater by checking the water flow detection means.
And it is detected that there is no water flow for a predetermined time.
That is, if there is no water flow for a predetermined time, the water heater by the user
Even if the operation of the
And stop the operation of the water heater. And said
When it becomes possible to supply unheated cleaning water from the water heater
Water from the storage tank while draining the washing water from the water heater.
Supply hot cleaning water. This allows for cleaning water
The temperature drops. In this way, the operation of the water heater by the user
Without waiting for the rotation to stop
Since it can be supplied, drainage means can be quickly provided.
The inside of the storage tank is washed by opening the water supply valve while operating.
The temperature of the purified water can be lowered. Then, when the temperature of the washing water detected by the temperature detecting means becomes lower than a predetermined temperature, the standby state of the washing operation is released and the dish washing operation under the control of the washing operation control means is restarted. In the washing of the dishes at this time, since the washing water having a temperature lower than the predetermined temperature by the cooling operation control means is used, the washing can be performed without solidifying the proteins attached to the dishes.

The dishwasher stops the operation of the water heater.
Can be done by said communication means
It That is, there is communication between the water heater and the dishwasher.
Therefore, for example, driving from the dishwasher to the water heater
You can remotely control the water heater by sending a signal to stop it.
To stop the operation and supply non-heated cleaning water
It can be Noh.

According to a second aspect of the present invention, the water heater and the dishwasher are provided with communication means for communicating operation information with each other, and the water heater has a temperature at which a hot water temperature can be set and operated. A setting means, the dishwasher, draining means for draining the cleaning water in the storage tank, temperature detection means for detecting the temperature of the cleaning water stored in the storage tank,
When the temperature detected by the temperature detecting means is equal to or higher than a predetermined temperature,
Put the tableware washing operation on standby and stop the operation of the water heater.
It was possible to supply non-heated cleaning water when stopped.
After being received via the communication means, by operating the drainage means and opening the water supply valve, non-heated cleaning water is supplied from the water heater in the stopped state via the hot water supply pipe to the storage tank. Cooling operation control means for lowering the temperature of the cleaning water therein and releasing the standby state of the cleaning operation when the temperature detected by the temperature detection means becomes lower than a predetermined temperature.

According to the second aspect of the present invention, when the operation of the dishwasher is started, the water supply valve is opened by the control of the cleaning operation control means, and the hot water supplied from the water heater is supplied. It is stored in the storage tank of the dishwasher as cleaning water. The temperature detecting means provided in the storage tank detects the temperature of the cleaning water stored in the storage tank. Then, when the detected temperature is lower than a predetermined temperature (for example, 70 ° C.), the dishwashing operation is continued under the control of the washing operation control means.

When the temperature detected by the temperature detecting means is equal to or higher than a predetermined temperature (for example, 70 ° C.), the cooling operation control means carries out the following control. First, the tableware washing operation under the control of the washing operation control means is put in a standby state. Then, when the operation of the water heater is stopped (mainly by the user's operation) and the unheated cleaning water can be supplied, the cleaning water in the storage tank is drained while the heating water is not heated. Supply water for cleaning.

Further, by the communication unit, water heater and than communication between the dishwashing apparatus it is being performed, dishwashing information indicating that use a user stops the operation of the water heater from the fed-water vessel It can be sent to the device.

The temperature of the non-heated washing water supplied from the hot water heater in the stopped state is lower than the temperature when the water heater is in operation, and the washing water in the storage tank is replaced to lower the temperature.
Then, when the temperature of the washing water detected by the temperature detecting means becomes lower than a predetermined temperature, the standby state of the washing operation is released and the dish washing operation under the control of the washing operation control means is restarted. Since the cleaning water in the storage tank is kept at a temperature lower than the predetermined temperature by the cooling operation control means, the cleaning water can be cleaned without solidifying the proteins attached to the dishes.

As described above, by providing the cooling operation control means, the user can supply hot water at a desired temperature even while the dishwasher is in operation, and the hot water can be supplied to the user. Even if high-temperature washing water for solidifying proteins is supplied to the storage tank of the dish washing apparatus, the dish washing apparatus can lower the temperature of the washing water and wash the dishes without trouble.

[0019]

[0020]

[0021]

[0022]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is an explanatory view schematically showing a dishwashing system according to an embodiment of the present invention, and FIG. 2 is an explanatory view schematically showing a dishwashing system according to another embodiment of the present invention.

In the dishwashing system A shown in FIG. 1, 1
1 is a water heater main body, 2 is a remote controller for remotely operating the water heater main body 1, 3 is a dishwasher installed in the kitchen, and 4 is a currant installed in the bathtub 5. Further, 6 is a main hot water supply pipe whose starting end is connected to the water heater body 1 and extends toward the kitchen. The main hot water supply pipe 6 is branched into a first hot water supply pipe 7 connected to the dishwasher 3 and a second hot water supply pipe 8 connected to the currant 4.

The water heater main body 1 comprises a water flow sensor 9 which is a water flow detecting means, and a heating device 10 which heats water. In the water heater main body 1, when the dishwasher 3 and the scallop 4 are used and a water flow is generated in the main hot water supply pipe 6, the water flow sensor 9 detects the water flow so that the heating device 10 heats the water. The so-called first stop type hot water supply is performed to start hot water supply. The heating device 10 includes a gas burner 12 that burns a gas supplied from a gas pipe 11, and the gas burner 12
And a heat exchanger 14 that heats the water supplied from the water supply pipe 13 by the combustion. The heating device 10 is controlled by the combustion control means 15. Further, the water heater main body 1 includes a remote controller 2 and a communication unit 16 for communicating setting information with the dish washing device 3 via the remote controller 2.

The remote controller 2 is suitable for dishwashing by the temperature setting means 17 for the user to set the hot water supply temperature to a desired temperature, and the temperature set by the temperature setting means 17 when the dishwashing device 3 starts the washing operation. Temperature (60 in this embodiment)
And a set temperature changing means 18 for changing the temperature to (° C.).
In addition, even after the temperature is changed to 60 ° C. by the set temperature changing means 18, if there is a temperature setting operation by the temperature setting means 17,
Accordingly, the set temperature is changed to the temperature desired by the user. Further, the remote controller 2 is provided with a display means 19 for displaying information about the hot water supply temperature such as the set temperature and the hot water supply status. The combustion control means 15 of the water heater main body 1 controls the heating device 10 based on the temperature set by the operation of the temperature setting means 17 of the remote controller 2 or the temperature suitable for washing dishes by the set temperature changing means 18.

Further, the remote controller 2 is in an operating state (ON) in a state in which the heating device 10 can be operated when a water flow is generated.
In addition, the operation switch 20 that can be switched to a non-operation state (OFF) is a state in which the operation of the heating device 10 is disabled when hot water supply is unnecessary.

The tableware washing device 3 is for washing tableware W.
It is provided with a tableware accommodation room 21 for accommodating and cleaning. The tableware accommodating chamber 21 is supplied with cleaning water from a hot water supply pipe 22 connected to the first hot water supply pipe 7. The hot water supply pipe 22 is provided with a water supply valve 23 that can be opened and closed. Na
The main hot water supply pipe 6, the first hot water supply pipe 7 and the hot water supply pipe 22 are main
It constitutes the hot water supply pipe of the invention.

A storage tank 24 for temporarily storing the cleaning water supplied through the hot water supply pipe 22 is provided below the tableware storage chamber 21. In the storage tank 24,
A temperature sensor 25, which is a temperature detecting means for detecting the temperature of the cleaning water stored in the storage tank 24, is provided. Further, the storage tank 24 is provided with a heater 26 that reheats the cleaning water and keeps it warm when the cleaning water is lower than the optimum temperature for cleaning. The cleaning water stored in the storage tank 24 is supplied with detergent by a detergent supplying means (not shown) and used for cleaning. To the lower part of the storage tank 24, a cleaning pump 29 is connected which sends the cleaning water filtered through the residual food filter 27 to a sprinkling tube 28 arranged in the tableware storage chamber 21. The sprinkling tube 28 includes a plurality of spray nozzles (not shown) for spraying the washing water toward the tableware W. Further, at the lower part of the storage tank 24, a drainage pump 30 and a drainage pipe 31 which are drainage means.
Are connected. Although not shown, the drain pipe 3
1, a trap whose upper end is above the upper surface of the storage tank 24 is formed.

Further, the dish washing device 3 is provided with a washing operation control means 32 for controlling a washing operation, a cooling operation control means 33 described later, and a communication means 34 for transmitting operation information to the remote controller 2. When the washing switch 35 is instructed to wash the tableware W by the operation of the operation switch 35 (when the operation switch 35 is on), the washing operation control unit 32 roughly cleans the tableware W without adding detergent to the washing water. A preliminary washing operation of washing off is performed, and then a main washing operation is performed in which detergent is poured into the washing water to sufficiently wash off stains on the tableware W. In the preliminary cleaning operation, the water supply valve 23 is opened to store a predetermined amount of cleaning water in the storage tank 24, and when the predetermined amount of cleaning water is stored in the storage tank 24, the water supply valve 23
Is closed. Then, the cleaning operation control means 32 then operates the cleaning pump 29 to inject the cleaning water of the storage tank 24 toward the tableware W through the injection nozzle, and operates the drainage pump 30 to operate the tableware W. Drain the cleaning water that has fallen along with the dirt. In the main cleaning operation, the water supply valve 23 is opened to store the cleaning water in the storage tank 24, and when a predetermined amount of the cleaning water is stored in the storage tank 24, the detergent is added and the water supply valve 23 is closed. Speak. Then, the cleaning operation control means 32 operates the cleaning pump 30 to inject the cleaning water in the storage tank 24 onto the tableware W. At this time, tableware W
The cleaning water that has fallen along with the dirt passes through the storage tank 24 and the residual food filter 27 and is sprayed toward the dishes W by the cleaning pump 29. After performing such a cleaning operation for a predetermined time, the cleaning operation control means 32 stops the operation of the cleaning pump 29 and operates the drainage pump 30. As a result, the cleaning water dropped along with the stains on the tableware W is drained through the drain pipe 31.

When the washing operation control means 32 is instructed to wash the dishes W by the operation of the operation switch 35, the dish washing device 3 transmits the information to the remote controller 2 by the communication means 34. When the remote controller 2 receives the instruction to perform the washing operation in the dish washing device 3, the set temperature changing unit 18 sets the temperature set by the temperature setting unit 17 (for example, 40 ° C.) to the optimum temperature (60 ° C.) for dish washing. ). As a result, the combustion control means 15 of the water heater main body 1 controls the hot water supply operation with the temperature (60 ° C.) changed by the set temperature changing means 18 as the set temperature, and in the dishwasher 3, the optimum temperature for dishwashing. Water for cleaning is supplied.

Here, when the user starts hot water supply from the scallop 4 while hot water is being supplied to the dishwasher 3, and the set temperature is changed to a high temperature (for example, 80 ° C. for hot water). The hot water for washing is also supplied to the storage tank 24 of the dish washing device 3. When washing dishes, especially when hot water is supplied at a temperature of 70 ° C. or higher during hot water supply during preliminary washing, proteins such as egg white adhering to the dishes W solidify and become difficult to wash. Therefore, when the temperature of the cleaning water supplied to the storage tank 24 is detected to be equal to or higher than a predetermined temperature (70 ° C. in this embodiment) by the temperature sensor 25, the cooling operation control means 33 operates. To do. More specifically, when the operation switch 35 is operated to instruct to wash the tableware W and the washing water is supplied to the storage tank 24 via the water supply valve 23, the temperature sensor 25 causes the washing water in the storage tank 24 to be washed. Detects the temperature of. When the detected temperature is 70 ° C. or higher, the cooling operation control means 33 first puts the cleaning operation by the cleaning operation control means 32 into a standby state.

[0032] In its, the operation of the operation switch 20 of the remote controller 2 is turned off by the user in the water heater main body 1 will wait until the stopped state. The fact that the operation switch 20 has been turned off can be easily judged by the cooling operation control means 33 by transmitting a signal from the remote control 2 to the dish washing device 3. When the operation switch 20 is turned off, the cooling operation control means 33 opens the water supply valve 23 and simultaneously operates the drainage pump 30. Since the operation of the water heater main body 1 is stopped, the heating device 10 does not operate even when a water flow occurs, and cleaning water at a relatively low temperature is supplied to replace the cleaning water in the storage tank 24. After that, when the temperature detected by the temperature sensor 25 becomes lower than 70 ° C., the standby state of the cleaning operation is released, and the cleaning operation by the cleaning operation control means 32 is restarted. Cooling operation control means 3
By performing such control by means of 3, the temperature of the cleaning water in the storage tank 24 can be quickly lowered. As a result, the washing water used to wash the dishes is
Since the temperature is lower than 70 ℃, it is necessary to solidify the protein.
Efficient cleaning can be performed without exception.

The cooling operation control means 33 does not wait for the operation switch 20 of the remote controller 2 to be turned off by the user, but when the hot water supply by the user is completed,
The operation of replacing the cleaning water in the storage tank 24 may be performed. That is, it is possible that the user finishes supplying hot water and forgets to turn off the operation switch 20. In such a case, the standby time is long, so in order to prevent this, first, the cooling operation control means 3
3 communicates with the water heater main body 1 via the remote controller 2,
The water flow sensor 9 of the water heater body 1 is monitored. Then, when the water flow does not occur even after the lapse of a predetermined time (for example, 10 minutes), it is considered that the hot water supply by the user is completed, and a signal for turning off the operation switch 20 is transmitted via the communication means 34. . By doing so, even if the user forgets to turn off the operation switch 20, the cleaning water in the storage tank 24 is quickly replaced to lower the temperature of the cleaning water in the storage tank 24. Can be made.

During hot water supply to the dishwasher 3 (especially,
When the temperature of the cleaning water supplied to the storage tank 24 by the detection of the temperature sensor 25 is lower than 70 ° C. at which protein does not solidify even if the user starts supplying hot water during hot cleaning (preliminary cleaning), The cooling operation control means 33 does not operate, and the washing operation control means 32 continues to wash dishes.

Next, another embodiment of the present invention will be described with reference to FIG. In the dishwashing system B shown in FIG.
1 is similar to the dishwashing system A shown in FIG.
The same reference numerals as in the inside are given and detailed description thereof is omitted.

In the dish washing system B, as shown in FIG. 2, the set temperature changing means 18 is provided in the water heater main body 1. Further, the communication means 16 of the water heater main body 1 and the communication means 34 of the dish washing device 3 are connected without the intermediary of the remote controller 2. With this configuration, when the washing operation control unit 32 is instructed to wash the dishes W by operating the operation switch 35 of the dish washing apparatus 3, the information is transmitted via the communication unit 34 to the water heater body 1. Send to. When the water heater main body 1 receives the instruction of the washing operation from the dish washing device 3, the temperature of the water heater main body 1 is set via the temperature setting means 17 of the remote controller 2 (for example, 40
C.) is changed to the optimum temperature (60.degree. C.) for dish washing by the set temperature changing means 18. As a result, the combustion control means 15 of the water heater main body 1 controls the hot water supply operation with the changed temperature (60 ° C.) by the set temperature changing means 18 as the set temperature.

Dishwashing system B constructed in this way
In the same manner as in the dishwashing system A described above, when the temperature of the cleaning water supplied to the storage tank 24 is detected to be equal to or higher than a predetermined temperature (70 ° C. in this embodiment) by the temperature sensor 25. At this time, the cooling operation control means 33 operates.

[0038]

The cooling operation control means 33 puts the cleaning operation by the cleaning operation control means 32 into a standby state, and when the user turns off the operation switch 20 of the remote controller 2 to stop the operation of the water heater main body 1. , The water supply valve 23 is opened, and the drainage pump 30 is operated at the same time. This allows
The high-temperature cleaning water in the storage tank 24 is replaced with the relatively low-temperature cleaning water, and the temperature detected by the temperature sensor 25 is 70%.
When it becomes a temperature lower than ° C., resume the cleaning operation by the cleaning operation control unit 32.

Further, in the dish washing system B, the cooling operation control means 33 can remotely operate the water heater main body 1 in parallel with the remote controller 2 by direct communication with the water heater main body 1. Thereby, the cooling operation control means 33
Monitors the water flow sensor 9 of the water heater body 1, and if no water flow occurs after a predetermined time (for example, 10 minutes),
Assuming that the hot water supply by the user has ended, the water heater body 1
The operation of can be stopped. As a result, even if the user forgets to turn off the operation switch 20 of the remote controller 2, the dish washing device 3 directly stops the operation of the water heater main body 1 and quickly cleans the inside of the storage tank 24. The temperature of the cleaning water in the storage tank 24 can be lowered by executing replacement of the water.

In each of the above embodiments, the water heater main body 1, the remote controller 2, and the dish washing device 3 are configured to communicate information by wire communication, but may be configured to perform wireless communication. Needless to say.

[Brief description of drawings]

FIG. 1 is an explanatory view schematically showing a dishwashing system according to an embodiment of the present invention.

FIG. 2 is an explanatory view schematically showing a dishwashing system according to another embodiment of the present invention.

[Explanation of symbols]

A, B ... Dishwashing system, 1 ... Water heater body, 3 ... Dishwashing device, 6 ... Main hot water supply pipe (hot water supply pipe), 7 ... First hot water distribution
Pipe (hot water supply pipe), 22 ... Hot water supply pipe , 9 ... Water flow sensor (water flow inspection
Output means) , 16, 34 ... Communication means, 17 ... Temperature setting means, 18 ... Set temperature changing means, 23 ... Water supply valve, 24 ... Storage tank, 25 ... Temperature sensor (temperature detecting means) , 30 ... Drainage
Pump (drainage means) 32 ... Cleaning operation control means 33 ...
Cooling operation control means.

─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-3-251224 (JP, A) JP-A-7-213472 (JP, A) JP-A-7-51214 (JP, A) JP-A-5- 168582 (JP, A) Actual development Sho 60-91166 (JP, U) Actual public Sho 54-35584 (JP, Y1) (58) Fields investigated (Int.Cl. ⁷ , DB name) A47L 15/00-15 / 46

Claims (2)

(57) [Claims] 1. A water heater and a dishwasher connected to the water heater via a hot water supply pipe, the dishwashing device including a water supply valve provided in the hot water supply pipe and the water supply valve. A storage tank for storing hot water supplied as cleaning water and a table for storing the cleaning water in the storage tank by opening the water supply valve at the start of the tableware cleaning operation, and the tableware with the cleaning water stored in the storage tank. In a dishwashing system including a washing operation control unit that performs washing, the water heater and the dishwashing device include a communication unit that communicates operation information with each other, and the water heater is capable of setting a hot water temperature. And a water flow detection means, wherein the dishwasher is a drainage means for draining the cleaning water in the storage tank, and a temperature detection for detecting the temperature of the cleaning water stored in the storage tank. Means and the temperature detected by the temperature detecting means When There is more than a predetermined temperature, the washing operation with dishes to a standby state for a predetermined time the water flow in the water flow detection means of the water heater
If it is detected that there is no
After stopping it to make it possible to supply unheated cleaning water,
By opening the water supply valve while operating the drainage means, the unheated cleaning water is supplied from the water heater in the stopped state to lower the temperature of the cleaning water in the storage tank, and the temperature detecting means detects the temperature. A dishwashing system comprising: a cooling operation control unit that releases a standby state of a washing operation when the temperature becomes lower than a predetermined temperature. 2. A water heater and a dishwashing device connected to the water heater via a hot water supply pipe, wherein the dishwashing device is provided with a water supply valve provided in the hot water supply pipe and the water supply valve. A storage tank for storing hot water supplied as cleaning water and a table for storing the cleaning water in the storage tank by opening the water supply valve at the start of the tableware cleaning operation, and the tableware with the cleaning water stored in the storage tank. In a dishwashing system including a washing operation control unit that performs washing, the water heater and the dishwashing device include a communication unit that communicates operation information with each other, and the water heater is capable of setting a hot water temperature. Different temperature setting means, the dishwasher drainage means for draining the cleaning water in the storage tank, temperature detection means for detecting the temperature of the cleaning water stored in the storage tank, the temperature detection If the temperature detected by the means Rutoki, the washing operation with dishes to the standby state, the operation of the water heater is stopped for cleaning unheated state
It was received via communication means that water was available.
After that, by opening the water supply valve while operating the drainage means, from the water heater in the stopped state through the hot water supply pipe.
Unwashed water heated state supplied to reduce the temperature of the wash water in the storage tank, the cooling operation control detection temperature of said temperature detecting means to cancel the standby state of the cleaning operation when a temperature lower than a predetermined temperature Te A dishwashing system, comprising: