JP6963969B2 - Hot water supply system - Google Patents

Description

The techniques disclosed herein relate to hot water supply systems.

Patent Document 1 discloses a hot water supply system including a tank for storing water, a heat source machine for boiling water in the tank, a hot water supply path for supplying water from the tank to the bathtub, and a control device capable of communicating with a cooking device. ing. The control device is configured to estimate the hot water filling start time of the day based on the hot water filling start time, which is the time when the water supply to the bathtub is started, for each day in the past predetermined period. .. The control device sets the boiling start time of the day based on the estimated boiling start time of the day, and when the set boiling start time arrives, the heat source machine executes the boiling of the water in the tank. It is configured as follows.

Japanese Unexamined Patent Publication No. 2013-224762

In a hot water supply system as described above, if the hot water supply on the day is started earlier than the estimated hot water supply start time, the hot water supplied from the tank to the bathtub may be insufficient.

The present specification provides a technique for solving the above problems. The present specification provides a technique capable of advancing the boiling start time when it is expected that the hot water beam of the day will start earlier than the estimated hot water beam start time.

The hot water supply system disclosed herein includes a tank for storing water, a heat source machine for boiling the water in the tank, a hot water supply path for supplying water from the tank to the bathtub, and a control device capable of communicating with the cooking device. There is. The control device has a hot water filling start time, which is the time when water supply to the bathtub is started, and a dinner cooking start time, which is the time when dinner cooking is started by the cooking device, for each day in the past predetermined period. It is configured to estimate the hot water start time and dinner cooking start time of the day based on. The control device sets the boiling start time of the day based on the estimated boiling start time of the day, and when the set boiling start time arrives, the heat source machine executes the boiling of the water in the tank. It is configured as follows. The control device is configured to advance the set boiling start time if the cooking device starts cooking dinner on the day before the estimated dinner cooking start time of the day arrives.

Generally, if the user returns home early, the supper and bathing will be served at an early time, and if the user returns home late, the supper and bathing will be served at a later time. Therefore, when the user returns home early, the dinner cooking start time and the hot water filling start time tend to be earlier, and when the user returns home late, the dinner cooking start time and the hot water filling start time tend to be delayed. .. Therefore, if the time when the cooking device starts cooking dinner on the day is earlier than the time when the dinner cooking starts estimated from the past results, the user returns home earlier and the hot water of the day is used. There is a possibility that the start time of the hot spring will be earlier than the start time of the hot water that is estimated from the past results. According to the above configuration, when it is expected that the hot water beam on the day will be started earlier than the estimated hot water beam start time, the boiling start time can be advanced.

In the above hot water supply system, the control device does not change the set boiling start time when the cooking device starts cooking dinner on the day after the estimated dinner cooking start time of the day arrives. It may be configured in.

If the time when the cooking device starts cooking dinner on the day is later than the time when the dinner cooking starts estimated from the past results, it is considered that the user returns home late. However, even if the user returns home late, the hot water filling start time may not change. In such a case, if the boiling start time is delayed, the high-temperature water supplied from the tank to the bathtub may be insufficient at the time when the hot water filling on the day is started. According to the above configuration, hot water can be reliably stored in the tank at the time when the hot water filling on the day is started.

Another hot water supply system disclosed herein includes a tank for storing water, a heat source for boiling the water in the tank, a hot water supply path for supplying water from the tank to the bathtub, and a control device capable of communicating with the cooking device. I have. The control device supplies water to the tub after the hot water filling start time, which is the time when the water supply to the tub is started, and the time when the cooking device starts cooking dinner for each day in the past predetermined period. Based on the time difference between the dinner cooking and the hot water filling, which is the time difference until the start of the cooking, the time difference between the hot water filling start time and the dinner cooking / hot water filling time on the day is estimated. The control device sets the boiling start time of the day based on the estimated boiling start time of the day, and when the set boiling start time arrives, the heat source machine executes the boiling of the water in the tank. It is configured as follows. The control device is set when the time difference from the time when the cooking device starts cooking dinner on the day to the estimated hot water filling start time on the day is larger than the estimated dinner cooking / hot water filling time difference on the day. It is configured to advance the boiling start time.

If the time difference from the time when the cooking device starts cooking dinner on the day to the hot water filling start time estimated from the past results is larger than the dinner cooking / hot water filling time difference estimated from the past results. The dinner of the day is cooked from an early time, so it is possible that the user is returning home early. According to the above configuration, when it is expected that the hot water beam on the day will be started earlier than the estimated hot water beam start time, the boiling start time can be advanced.

In the above hot water supply system, the control device determines that the time difference from the time when the cooking device starts cooking dinner on the day to the estimated hot water filling start time on the day is based on the estimated dinner cooking / hot water filling time difference on the day. If it is also small, it may be configured so as not to change the set boiling start time.

If the time difference from the time when the cooking device starts cooking dinner on the day to the hot water filling start time estimated from the past results is smaller than the dinner cooking / hot water filling time difference estimated from the past results, the dinner on the day Cooking is done late, so the user may be returning home late. However, even if the user returns home late, the hot water filling start time may not change. In such a case, if the boiling start time is delayed, the high-temperature water supplied from the tank to the bathtub may be insufficient at the time when the hot water filling on the day is started. According to the above configuration, hot water can be reliably stored in the tank at the time when the hot water filling on the day is started.

In the above hot water supply system, the control device is configured to determine that the cooking is not dinner cooking if the cooking is completed before a predetermined time has elapsed since the cooking device started cooking. You may.

In addition to cooking dinner, various types of cooking are performed in the cooking device. Usually, dinner is cooked for a longer time than a predetermined time (for example, 10 minutes). According to the above configuration, it is possible to accurately determine whether or not the cooking performed by the cooking device is cooking for dinner.

In the above-mentioned hot water supply system, the control device may be configured to determine that cooking is not dinner cooking when cooking is started in the cooking device before a predetermined time.

In addition to cooking dinner, the cooking device also cooks breakfast and lunch. Usually, the cooking of the dinner is done after a predetermined time (for example, 14:00). According to the above configuration, it is possible to accurately determine whether or not the cooking performed by the cooking device is cooking for dinner.

In the above hot water supply system, the control device may be configured to determine that cooking is not dinner cooking if cooking is started in the cooking device after the start of water supply to the bathtub. ..

Focusing on the time when the cooking device started cooking dinner on the day, in order to accelerate the boiling time of the water in the tank before boiling the water in the bathtub, the actual results in the past predetermined period should also be in the bathtub. It is necessary to pay attention to the cooking of the dinner that was done before the hot spring. According to the above configuration, it is possible to accurately estimate the dinner cooking start time and the dinner cooking / hot water filling time difference of the day based on the past results.

In the above hot water supply system, the control device may include a server-side control device and a client-side control device capable of communicating with the server-side control device.

According to the above configuration, the processing performed by the client-side control device can be simplified.

The figure which shows typically the structure of the hot water supply system 2, 92 of Examples 1 and 2. The figure which shows typically the structure of the hot water supply apparatus 4 of Examples 1 and 2. The figure which shows typically the time zone where cooking is performed and the time zone when hot water is supplied in a general household. FIG. 5 is a flowchart showing a first heat pump operation process executed by the control unit 70 of the first and second embodiments. FIG. 5 is a flowchart showing a second heat pump operation process executed by the control unit 70 of the first and second embodiments. FIG. 5 is a flowchart showing a hot water beam process executed by the control unit 70 of the first and second embodiments.

(Example 1)
As shown in FIG. 1, the hot water supply system 2 according to the present embodiment includes a hot water supply device 4, a cooking device 100, a router 200, and a server device 300. The hot water supply device 4 and the cooking device 100 can communicate with each other. The hot water supply device 4 can be connected to the Internet 250 via the router 200. The server device 300 is connected to the Internet 250. Therefore, the hot water supply device 4 can communicate with the server device 300 via the router 200 and the Internet 250.

As shown in FIG. 2, the hot water supply device 4 includes a tank 10, a tank water circulation path 20, a tap water introduction path 30, a supply path 40, a heat pump 50, a combustion device 60, a control unit 70, and a remote controller 80. To be equipped.

The heat pump 50 is a heat source that absorbs heat from the outside air, which is a natural environment, and heats the water in the tank water circulation path 20. Although not shown, the heat pump 50 uses a refrigerant circulation path for circulating a refrigerant (alternative freon or natural refrigerant such as R410A, propane, CO _2, etc.), an evaporator that exchanges heat between the outside air and the refrigerant, and a refrigerant. A compressor that compresses to high temperature and high pressure, a condenser that exchanges heat between the water in the tank water circulation path 20 and the high temperature and high pressure refrigerant, and a refrigerant after heat exchange is depressurized to low temperature and low pressure. It is equipped with an expansion valve.

The tank 10 stores hot water heated by the heat pump 50. The tank 10 is a closed type, and the outside is covered with a heat insulating material. Water is stored in the tank 10 until it is full. In this embodiment, the capacity of the tank 10 is 100 L. Thermistors 12, 14, 16, 17, and 18 are attached to the tank 10 at predetermined intervals in the height direction of the tank 10. Each thermistor 12, 14, 16, 17, 18 measures the temperature of the water at its mounting position. For example, each thermistor 12, 14, 16, 17, 18 measures the temperature of water at positions 6L, 12L, 30L, 50L, 70L from the top of the tank 10, respectively.

The upstream end of the tank water circulation path 20 is connected to the lower part of the tank 10, and the downstream end is connected to the upper part of the tank 10. A circulation pump 22 is interposed in the tank water circulation path 20. The circulation pump 22 sends out the water in the tank water circulation path 20 from the upstream side to the downstream side. Further, the tank water circulation path 20 passes through the condenser of the heat pump 50. Therefore, when the heat pump 50 is operated, the water in the tank water circulation path 20 is heated by the condenser of the heat pump 50. Therefore, when the circulation pump 22 and the heat pump 50 are operated, the water in the lower part of the tank 10 is heated by the heat pump 50, and the heated water is returned to the upper part of the tank 10. That is, the tank water circulation channel 20 is a water channel for storing heat in the tank 10. A thermistor 24 is interposed on the upstream side of the heat pump 50 of the tank water circulation path 20. The thermistor 24 is derived from the lower part of the tank 10 and measures the temperature of water before passing through the heat pump 50. The thermistor 24 may be provided in the tank water circulation path 20 located closer to the heat pump 50 than the circulation pump 22, or may be provided in the tank water circulation path 20 located closer to the tank 10 than the circulation pump 22. ..

The upstream end of the tap water introduction path 30 is connected to the tap water supply source 31. A thermistor 32 is interposed in the tap water introduction path 30. The thermistor 32 measures the temperature of tap water. The downstream side of the tap water introduction path 30 is branched into a first introduction path 30a and a second introduction path 30b. The downstream end of the first introduction path 30a is connected to the lower part of the tank 10. The downstream end of the second introduction path 30b is connected in the middle of the supply path 40. A mixing valve 42 is provided at a connection portion between the downstream end of the second introduction path 30b and the supply path 40. The mixing valve 42 adjusts the amount of hot water flowing in the supply path 40 to be mixed with the water in the second introduction path 30b.

The upstream end of the supply path 40 is connected to the upper part of the tank 10. A combustion device 60 is interposed in the supply path 40 on the downstream side of the connection with the second introduction path 30b. A thermistor 44 is interposed in the supply path 40 on the downstream side of the combustion device 60. The thermistor 44 measures the temperature of the hot water supplied. The combustion device 60 heats water by burning fuel gas. The combustion device 60 heats the water in the supply path 40 so that the temperature of the hot water measured by the thermistor 44 matches the set temperature of the hot water supply. The downstream end of the supply path 40 is connected to a hot water supply point (for example, a faucet in the kitchen, a shower 54 in the bathroom 48, a faucet 56, etc.). Further, at the downstream end of the supply path 40, a hot water beam valve 46 for hot water filling the bathtub 58 of the bathroom 48 is provided. The hot water valve 46 can adjust the flow rate of hot water supplied to the bathtub 58 by adjusting the opening degree.

The control unit 70 includes a CPU, ROM, RAM, communication I / F, and the like (not shown). The control unit 70 is electrically connected to each component of the hot water supply device 4 and controls the operation of each component. A remote controller 80 is connected to the control unit 70. The remote controller 80 includes a CPU, ROM, RAM, communication I / F, and the like (not shown). Further, the remote controller 80 includes a display unit 80a for displaying various information related to the hot water supply device 4, and an operation unit 80b for receiving various operation inputs related to the hot water supply device 4. The user can set the hot water supply set temperature, which is the temperature of the water supplied to the shower 54, the curan 56, and the like, the bath set temperature, which is the temperature of the water supplied to the bathtub 58, and the like, via the remote controller 80. In addition, the user can instruct the start of hot water filling the bathtub 58 via the remote controller 80.

As shown in FIG. 1, the remote controller 80 can communicate with the router 200 via wireless communication, and can connect to the Internet 250 via the router 200.

The cooking device 100 is, for example, a cooking device such as a stove, a rice cooker, or a microwave oven. The cooking device 100 includes a control unit 102. The control unit 102 can communicate with the remote controller 80 via wireless communication. The cooking device 100 transmits a cooking start signal to the remote controller 80 when cooking is started (for example, when a burner for cooking is ignited). Further, the cooking apparatus 100 transmits a cooking end signal to the remote controller 80 when the cooking is completed (for example, when the burning burner is extinguished).

The server device 300 is a server provided by the manufacturer of the water heater 4. The server device 300 includes a control unit 302. The server device 300 is connected to the Internet 250. Therefore, the control unit 302 of the server device 300 can communicate with the remote controller 80 of the hot water supply device 4 via the Internet 250. The control unit 302 of the server device 300 can be called a server-side control device. Further, the control unit 70 and the remote controller 80 of the hot water supply device 4 can be said to be client-side control devices.

Next, the operation of the hot water supply device 4 will be described. The hot water supply device 4 can perform a boiling operation, a hot water supply operation, and a hot water supply operation. In this specification, both the hot water supply operation and the hot water supply operation of the hot water supply device 4 are referred to as hot water supply by the hot water supply device 4. Hereinafter, each operation will be described.

(Boiling operation)
The boiling operation is an operation in which the water in the tank 10 is heated by the heat pump 50. When the control unit 70 instructs the execution of the boiling operation, the heat pump 50 operates and the circulation pump 22 operates. When the circulation pump 22 operates, the water in the tank 10 circulates in the tank water circulation path 20. That is, the water existing in the lower part of the tank 10 is introduced into the tank water circulation path 20, and when the introduced water passes through the condenser of the heat pump 50, it is heated by the heat of the refrigerant, and the heated water is heated by the tank 10. Returned to the top of. As a result, hot water is stored in the tank 10. Inside the tank 10, a temperature stratification is formed in which a layer of high temperature water is laminated on a layer of low temperature water.

(Hot water supply operation)
The hot water supply operation is an operation of supplying the water in the tank 10 to the hot water supply location. The hot water supply operation can also be performed during the above-mentioned boiling operation. When the hot water tap is opened at the hot water supply location, tap water flows from the tap water introduction path 30 (first introduction path 30a) to the lower part of the tank 10 due to the water pressure from the tap water supply source 31. At the same time, the hot water in the upper part of the tank 10 is supplied to the hot water supply point via the supply path 40.

When the temperature of the water supplied from the tank 10 to the supply path 40 (that is, the measured temperature of the thermistor 12) is higher than the hot water supply set temperature, the control unit 70 opens the mixing valve 42 and starts from the second introduction path 30b. Tap water is introduced into the supply channel 40. Therefore, the water supplied from the tank 10 and the tap water supplied from the second introduction path 30b are mixed in the supply path 40. The control unit 70 adjusts the opening degree of the mixing valve 42 so that the temperature of the water supplied to the hot water supply location matches the hot water supply set temperature. On the other hand, the control unit 70 operates the combustion device 60 when the temperature of the water supplied from the tank 10 to the supply path 40 is lower than the hot water supply set temperature. Therefore, the water passing through the supply path 40 is heated by the combustion device 60. The control unit 70 controls the output of the combustion device 60 so that the temperature of the water supplied to the hot water supply location matches the hot water supply set temperature.

(Hot water operation)
The hot water operation is an operation of supplying the water in the tank 10 to the bathtub 58. When the remote controller 80 instructs to start the hot water, the control unit 70 opens the hot water valve 46. As a result, water adjusted to the bath set temperature is supplied to the bathtub 58 in the same manner as in the hot water supply operation. As will be described later, the control unit 70 also executes the above-mentioned boiling operation when executing the hot water filling operation.

(Learning control)
FIG. 3 shows a time zone in which hot water is supplied by the hot water supply device 4 (shown in the lower part of FIG. 3) and a time zone in which cooking is performed by the cooking device 100 (shown in the upper part of FIG. 3) during a certain day. It is a figure which shows typically. In this embodiment, 24 hours starting from 2:00 is set as a unit time for specifying one day.

Regarding hot water supply, generally, for example, the first hot water supply is started from 6:00 to 7:00 (6:00 in the example of FIG. 3). The first hot water supply is, for example, hot water supply for preparing breakfast or washing the washbasin. In the first hot water supply, about 5 L to 20 L of hot water is supplied. After that, for example, the second hot water supply is started from 11:00 to 12:00 (11:00 in the example of FIG. 3). The second hot water supply is, for example, a hot water supply for preparing lunch. Even in the second hot water supply, about 5 L to 20 L of hot water is supplied. After that, for example, the third hot water supply is started at 20:00 (20:00 in the example of FIG. 3). The third hot water supply is a hot water supply operation to the bathtub 58. In the hot water operation, hot water of about 150 L to 180 L is supplied. After that, for example, the final hot water supply is started from 23:00 to 0:00 (about 23:00 in the example of FIG. 3). The last hot water supply is, for example, hot water supply for brushing teeth and the like. In the final hot water supply, about 5 L to 10 L of hot water is supplied. The last hot water supply ends around 0:00.

Regarding cooking, in general, for example, breakfast cooking C1 is started from 6:00 to 7:00 (7:00 in the example of FIG. 3). Cooking C1 for breakfast is completed in, for example, 30 minutes. Then, for example, cooking C2 for lunch is started from 11:00 to 12:00 (12:00 in the example of FIG. 3). Cooking C2 for lunch is completed in, for example, 30 minutes. Then, for example, cooking C3 for dinner is started from 17:00 to 18:00 (18:00 in the example of FIG. 3). Cooking C3 for dinner is completed in, for example, 30 minutes. In addition to cooking C1, C2, and C3 of these meals, for example, during the time between lunch and dinner (15:00 in the example of FIG. 3), cooking C4 of boiling water with a kettle to drink tea is performed. Sometimes. Such cooking C4 is completed in, for example, 5 minutes. In addition, after a family member who returns home late returns home (21:00 in the example of FIG. 3), dinner cooking C5 for the family member may be performed. Such cooking C5 is completed in, for example, 30 minutes.

In this embodiment, each time the hot water supply device 4 supplies hot water, the control unit 70 determines the time when the hot water supply is started, the time when the hot water supply is finished, and the amount of hot water used indicating the amount of hot water used in the hot water supply. , Memorize as hot water supply record. Further, each time the control unit 70 receives the cooking start signal and the cooking end signal from the cooking device 100 via the remote controller 80, the control unit 70 stores the time when the cooking is started and the time when the cooking is finished as the cooking result. Then, the control unit 70 transmits the hot water supply record for one day and the cooking record for one day as the operation history for one day to the control unit 302 of the server device 300. The control unit 302 of the server device 300 stores the operation history of the hot water supply device 4 and the cooking device 100 in each day of the past predetermined period (for example, 7 days).

Subsequently, the process executed by the hot water supply system 2 every 24 hours (every time the time becomes 2:00) will be described. The control unit 70 of the hot water supply device 4 transmits the operation history of the previous day to the control unit 302 of the server device 300 together with the current detection temperature of the thermistor 32 every 24 hours. The control unit 302 newly stores the operation history of the hot water supply device 4 and the cooking device 100 on the previous day.

Next, the control unit 302 identifies the earliest time among the times when the first hot water supply is started (hot water supply start time) in the past 7 days from the operation history for the past 7 days. Hereinafter, this time is referred to as “hot water supply start time S1”. For example, the control unit 302 specifies 6:00 as the hot water supply start time S1 (see FIG. 3).

Further, the control unit 302 identifies the largest amount of hot water used from the time of starting hot water supply to the amount of hot water used before the start of hot water supply in the past 7 days from the operation history for the past 7 days. Hereinafter, this amount of hot water used will be referred to as "first amount of hot water supplied Q1". For example, the control unit 302 specifies 30 L as the first hot water supply amount Q1.

Further, the control unit 302 identifies the earliest time among the times when the hot water is started (hot water start time) in the past 7 days from the operation history for the past 7 days. Hereinafter, this time will be referred to as "hot water start time B1". For example, the control unit 302 specifies 20:00 as the hot water filling start time B1 (see FIG. 3).

Further, the control unit 302 identifies the latest time among the times when the last hot water supply is completed (hot water supply end time) in the past 7 days from the operation history for the past 7 days. Hereinafter, this time will be referred to as “hot water supply end time G1”. For example, the control unit 302 specifies 0:00 as the hot water supply end time G1 (see FIG. 3).

Further, the control unit 302 specifies the first predetermined time α based on the detection temperature TW of the thermistor 32 (that is, the water temperature TW of tap water) and the first hot water supply amount Q1. Further, the control unit 70 specifies the second predetermined time β and the third predetermined time γ based on the water temperature TW of tap water.

For example, when the water temperature TW of tap water is 21 ° C. or higher, the control unit 302 specifies "20 minutes" as the first predetermined time α. When the water temperature TW is 13 ° C. or higher and lower than 21 ° C., the control unit 302 specifies "30 minutes" as the first predetermined time α. When the water temperature TW is less than 13 ° C., the control unit 302 specifies "45 minutes" as the first predetermined time α. The control unit 302 specifies a shorter time as the first predetermined time α as the water temperature TW of tap water is higher. Further, for example, when the first hot water supply amount Q1 is less than 12 L, the control unit 302 specifies "5 minutes" as the addition time of the first predetermined time α. When the first hot water supply amount Q1 is 12 L or more and less than 30 L, the control unit 302 specifies "10 minutes" as the addition time of the first predetermined time α. When the first hot water supply amount Q1 is 30 L or more, the control unit 302 specifies "15 minutes" as the addition time of the first predetermined time α. The control unit 302 specifies a shorter time as the addition time of the first predetermined time α as the first hot water supply amount Q1 is smaller.

Similarly, for example, when the water temperature TW of tap water is 21 ° C. or higher, the control unit 302 specifies "40 minutes" as the second predetermined time β. When the water temperature TW is 13 ° C. or higher and lower than 21 ° C., the control unit 302 specifies "50 minutes" as the second predetermined time β. When the water temperature TW is less than 13 ° C., the control unit 302 specifies "60 minutes" as the second predetermined time β. The control unit 302 specifies a shorter time as the second predetermined time β as the water temperature TW of tap water is higher.

Similarly, for example, when the water temperature TW of tap water is 21 ° C. or higher, the control unit 302 specifies "80 minutes" as the third predetermined time γ. When the water temperature TW is 13 ° C. or higher and lower than 21 ° C., the control unit 302 specifies "50 minutes" as the third predetermined time γ. When the water temperature TW is less than 13 ° C., the control unit 302 specifies "40 minutes" as the third predetermined time γ. The control unit 302 specifies a longer time as the third predetermined time γ as the water temperature TW of tap water is higher.

Next, the control unit 302 specifies the first heat pump operation time S0, which is a time before the specified first predetermined time α from the hot water supply start time S1. Further, the control unit 302 specifies the second heat pump operation time B0, which is a time before the specified second predetermined time β from the hot water filling start time B1. Further, the control unit 302 specifies the heat pump stop time G0, which is a time before the specified third predetermined time γ from the hot water supply end time G1.

Further, the control unit 302 identifies the earliest time among the times when the cooking of the supper starts (the supper cooking start time) in the past 7 days from the operation history for the past 7 days. Hereinafter, this time will be referred to as “dinner cooking start time D1”. For example, the control unit 302 specifies 18:00 as the dinner cooking start time D1 (see FIG. 3). The control unit 302 specifies the time when the cooking of the supper starts from the cooking results for one day as shown in FIG. 3 as follows.

First, the control unit 302 determines that the cooking is not dinner cooking when the elapsed time from the cooking start time to the cooking end time is less than a predetermined time (for example, 10 minutes). As a result, it is determined that the cooking C4 shown in FIG. 3 is not cooking for dinner. Further, when the cooking start time is before a predetermined time (for example, 14:00), the control unit 302 determines that the cooking is not dinner cooking. As a result, it is determined that the cooking C1 and C2 shown in FIG. 3 are not cooking for dinner. Further, when the cooking start time is later than the hot water filling start time of the day, the control unit 302 determines that the cooking is not the cooking of the dinner. As a result, it is determined that cooking C5 shown in FIG. 3 is not cooking for dinner. The cooking C5 shown in FIG. 3 actually corresponds to the cooking of a supper, but in this embodiment, only the cooking of the supper performed before the start of hot water is considered, so that the control unit 302 sets the control unit 302. Such cooking C5 is treated as not cooking dinner. As described above, the control unit 302 extracts the cooking C3 for dinner from the cooking results for one day as shown in FIG. 3, and specifies the time when the cooking starts as the dinner cooking start time.

The control unit 302 has the hot water supply start time S1, the first hot water supply amount Q1, the hot water filling start time B1, the hot water supply end time G1, the first heat pump operation time S0, and the second heat pump operation time specified as described above. B0, the heat pump stop time G0, and the dinner cooking start time D1 are transmitted to the control unit 70. The control unit 70 has a hot water supply start time S1, a first hot water supply amount Q1, a hot water supply start time B1, a hot water supply end time G1, a first heat pump operation time S0, a second heat pump operation time B0, and a heat pump received from the control unit 302. The stop time G0 and the dinner cooking start time D1 are stored.

(First heat pump operation process)
After that, when the first heat pump operation time S0 arrives, the control unit 70 starts the process of FIG. FIG. 4 is a flowchart showing the contents of the first heat pump operation process executed by the control unit 70.

First, in S10, the control unit 70 selects the thermistor corresponding to the first hot water supply amount Q1 from the thermistors 12, 14, 16, 17, and 18 attached to the tank 10. In this embodiment, since the first hot water supply amount Q1 is 30 L, the control unit 70 selects the thermistor 16 corresponding to 30 L.

In the following S12, the control unit 70 determines whether or not the temperature measured by the thermistor 16 selected in S10 above (that is, the water temperature at a position 30 L from the upper part of the tank 10) is higher than the predetermined threshold value TA.

In this embodiment, the predetermined threshold value TA is “boiling set temperature −10 ° C.”. The boiling set temperature is, for example, 47 ° C. Therefore, the predetermined threshold value TA is, for example, 37 ° C. If YES in S12, the water temperature at least 30 L from the top of the tank 10 is higher than the threshold TA (for example, 37 ° C.). As described above, inside the tank 10, a temperature stratification is formed in which a layer of high temperature water is laminated on a layer of low temperature water. Therefore, when it is determined to be YES in S12, high-temperature water close to the boiling set temperature (for example, 47 ° C.) is stored between the position of 30 L of the tank 10 and the upper part of the tank. That is, if YES is determined in S12, the amount of hot water (about 5L to 20L) required for the first hot water supply scheduled to be performed at a time near the hot water supply start time S1 is stored in the tank 10. It means that. If YES is determined in S12, the process proceeds to S18. On the other hand, if NO is determined in S12, the process proceeds to S14.

In S14, the control unit 70 determines whether or not the heat pump 50 is operating. When the heat pump 50 is operating, the control unit 70 determines YES in S14 and returns to S12. In this case, the control unit 70 continues the boiling operation of heating the water in the tank 10 by the heat pump 50. On the other hand, when the heat pump 50 is not operating, the control unit 70 determines NO in S14 and proceeds to S16.

In S16, the control unit 70 operates the heat pump 50. Further, the control unit 70 rotates the circulation pump 22. That is, the control unit 70 starts the boiling operation. As a result, the water existing in the lower part of the tank 10 is introduced into the tank water circulation path 20, the introduced water is heated by the heat pump 50, and the heated water is returned to the upper part of the tank 10. As a result, hot water is stored in the tank 10. After operating the heat pump 50 in S16, the process returns to S12, and the control unit 70 determines that the temperature measured by the thermistor 16 becomes higher than the predetermined threshold value TA (that is, the tank 10 is filled with the water having the first hot water supply amount Q1). (Being stored at a water temperature higher than the threshold TA) is monitored. When the temperature measured by the thermistor 16 becomes higher than the predetermined threshold value TA (YES in S12), the process proceeds to S18.

In S18, the control unit 70 stops the heat pump 50 and the circulation pump 22. As described above, when YES is determined in S12, it is because the amount of hot water required for the first hot water supply (first hot water supply amount Q1 (30 L)) is already stored in the tank 10.

When the first hot water supply operation is executed at a time near the hot water supply start time S1 after starting the first heat pump operation process of FIG. 4, the hot water in the upper part of the tank 10 is sent to the hot water supply location via the supply path 40. Be supplied. As described above, in the hot water supply system 2 of the present embodiment, at the hot water supply start time S1, the amount of hot water required for hot water supply can be stored in the tank 10. That is, during the first predetermined time α, by operating the heat pump 50 only during that time, it is possible to store the amount of hot water required for hot water supply in the tank 10 at the time of the hot water supply start time S1. It's time.

(Correction processing of the second heat pump operation time B0)
After the first heat pump operation process, the control unit 70 monitors the cooking apparatus 100 to start cooking dinner until the dinner cooking start time D1 is reached. Specifically, when the control unit 70 receives the cooking start signal from the cooking device 100 and the current time is before a predetermined time (for example, 14:00), the cooking device 100 is performing cooking. Judge that it is not cooking for dinner. Further, when the control unit 70 receives the cooking start signal from the cooking device 100, even if the current time is after the predetermined time (for example, 14:00), before the predetermined time (for example, 10 minutes) elapses. When the cooking end signal is received from the cooking apparatus 100, it is determined that the cooking is not the cooking of dinner. When the control unit 70 receives the cooking start signal from the cooking device 100, the current time is later than the predetermined time (for example, 14:00), and even if the predetermined time (for example, 10 minutes) elapses, the control unit 70 still receives the cooking start signal from the cooking device 100. When the cooking end signal is not received, it is determined that the cooking device 100 has started cooking dinner.

When the cooking device 100 starts cooking dinner before the dinner cooking start time D1, the control unit 70 starts cooking the dinner on the day earlier than the dinner cooking start time D1. Since there is a possibility that the start of hot water filling on the day will be earlier than the hot water filling start time B1, the second heat pump operating time B0 will be advanced. For example, the control unit 70 calculates the time difference ΔT from the time when the cooking device 100 starts cooking dinner to the dinner cooking start time D1, and advances the second heat pump operation time B0 by the time difference ΔT. As a result, even if the start of the hot water on the day is earlier than the hot water start time B1, the hot water required for the start of the hot water can be stored in the tank 10.

In this embodiment, the control unit 70 starts cooking the supper in the cooking device 100 after the supper cooking start time D1 arrives, that is, the start of the supper cooking on the day is the supper cooking start time D1. If it becomes later, the second heat pump operation time B0 is not changed. Even if the start of cooking for dinner on the day is later than the start time D1 for cooking dinner, the start of hot water on the day may not change from the start time B1 for hot water. With the above configuration, hot water can be reliably stored in the tank 10 at the start of hot water filling. Unlike this, when the cooking device 100 starts cooking the supper after the supper cooking start time D1 arrives, that is, when the start of the supper cooking on the day is later than the supper cooking start time D1. In addition, the second heat pump operation time B0 may also be delayed.

(Second heat pump operation process)
After that, when the second heat pump operation time B0 arrives, the control unit 70 starts the process of FIG. FIG. 5 is a flowchart showing the contents of the second heat pump operation process executed by the control unit 70.

First, in S30, whether or not the temperature measured by the thermistor 24 (that is, the temperature of water derived from the lower part of the tank 10 and before passing through the heat pump 50) is higher than the predetermined threshold TB (that is, in S30). That is, whether or not the tank 10 is in a full state) is determined. If YES is determined in S30, the process proceeds to S38. On the other hand, if NO is determined in S30, the process proceeds to S32.

In S32, the control unit 70 operates the heat pump 50. Further, the control unit 70 rotates the circulation pump 22. That is, the control unit 70 starts the boiling operation. If the heat pump 50 and the circulation pump 22 are already operating at the time of S32, the control unit 70 continuously operates the heat pump 50 and the circulation pump 22. After finishing S32, the process proceeds to S34.

On the other hand, in S38, the heat pump 50 and the circulation pump 22 are stopped. As described above, when it is determined to be YES in S30, the tank 10 is in a full state. Therefore, it is not necessary to operate the heat pump 50 and the circulation pump 22 any more. After finishing S38, the process proceeds to S34.

In S34, the control unit 70 determines whether or not the hot water filling start instruction has been given from the remote controller 80. If YES is determined in S34, the process proceeds to S36 to start the hot water filling process (see FIG. 5). On the other hand, if NO in S34, the process returns to S30.

In this embodiment, when the control unit 70 operates the heat pump 50 at the second heat pump operation time B0 (S32), the temperature measured by the thermistor 24 at the hot water filling start time B1 becomes less than a predetermined threshold value TB. As described above, the second predetermined time β is specified. However, the time when the user actually instructs the start of the hot water may be earlier or later than the hot water start time B1. In addition, the amount of hot water inside the tank 10 at the second heat pump operating time B0 may be larger or smaller than expected. Therefore, after operating the heat pump 50 in S32 above, the user may instruct the start of hot water filling before the tank 10 is full, and the tank 10 is full. After stopping the heat pump 50 in S38 above, the user may instruct the start of hot water filling.

(Hot water treatment)
As described above, when the user instructs to start the hot water filling, the control unit 70 starts the hot water filling process in S36. FIG. 6 is a flowchart showing the contents of the hot water filling process.

In S50, the control unit 70 starts the hot water filling operation. That is, the control unit 70 opens the hot water valve 46 provided in the supply path 40 to the bathtub 58, and starts supplying hot water to the bathtub 58.

In S52, the control unit 70 determines whether or not the heat pump 50 is operating. When the heat pump 50 is operating, the control unit 70 determines YES in S52 and proceeds to S58. On the other hand, when the heat pump 50 is stopped, the control unit 70 determines NO in S52 and proceeds to S54.

In S54, the control unit 70 monitors that the temperature measured by the thermistor 18 becomes equal to or less than a predetermined threshold value TA. In S54, instead of monitoring the temperature measured by the thermistor 18, it may be monitored that the temperature measured by the thermistor 24 is equal to or lower than a predetermined threshold value TA. If YES in S54, the process proceeds to S56. In S56, the control unit 70 operates the heat pump 50 and rotates the circulation pump 22.

In S58, the control unit 70 controls the operation and stop of the combustion device 60. For example, the control unit 70 operates the combustion device 60 when the temperature measured by the thermistor 12 (that is, the water temperature at a position 6 L from the upper part of the tank 10) becomes equal to or lower than the bath set temperature. In this case, the bathtub 58 is supplied with hot water heated by the heat pump 50 and the combustion device 60. Further, the control unit 70 stops the combustion device 60 when the temperature measured by the thermistor 14 (that is, the water temperature at the position 12L from the upper part of the tank 10) exceeds the bath set temperature. In this case, hot water heated by the heat pump 50 is supplied to the bathtub 58.

In S60, the control unit 70 monitors that the hot water operation is completed. When the amount of water L (for example, 150 L) to be supplied to the bathtub 58 in the hot water operation is finished to be supplied to the bathtub 58, the control unit 70 determines YES in S60 and proceeds to S62. If NO in S60, the process returns to S52.

In S62, the control unit 70 waits until the temperature measured by the thermistor 24 becomes higher than the predetermined threshold value TB (that is, until the tank 10 becomes full). If YES is determined in S62, the heat pump 50 is stopped in S64. When S64 is completed, the hot water filling process of FIG. 6 is completed. At the same time, the process of FIG. 5 is also completed.

As described above, in the hot water supply system 2 of the present embodiment, at the hot water filling start time B1, a part of the hot water required for the hot water filling can be stored in the tank 10. That is, the second predetermined time β is the time during which the required amount of hot water can be stored in the tank 10 at the time of the hot water filling start time B1 by operating the heat pump 50 only during that time. Is.

(Heat pump stop processing)
After that, when the heat pump stop time G0 arrives, the control unit 70 starts the heat pump stop process (not shown). That is, the control unit 70 stops the heat pump 50 when the heat pump 50 is in operation at the time of the heat pump stop time G0. When the heat pump 50 is not operating, the control unit 70 keeps the heat pump 50 stopped as it is. When the heat pump 50 is stopped at the heat pump stop time G0, the control unit 70 does not operate the heat pump 50 until the next day. After that, the final hot water supply operation ends at a time near the hot water supply end time G1. Therefore, in the hot water supply system 2 of the present embodiment, it is possible to prevent excessive hot water from being stored in the tank 10 at the hot water supply end time G1. That is, by not operating the heat pump 50 during the third predetermined time γ, it is possible to prevent excessive hot water from being stored in the tank 10 at the time of the hot water supply end time G1. It's time.

In the above embodiment, the control unit 70 may specify the average time of the dinner cooking start time in the past 7 days as the dinner cooking start time D1 from the operation history for the past 7 days. Further, the control unit 70 may specify the average time of the hot water filling start time in the past 7 days as the hot water filling start time B1 from the operation history for the past 7 days.

Alternatively, the control unit 70 may specify the second earliest time of the dinner cooking start time in the past 7 days as the dinner cooking start time D1 from the operation history for the past 7 days. Further, the control unit 70 may specify the second earliest time of the hot water filling start time in the past 7 days as the hot water filling start time B1 from the operation history for the past 7 days. With such a configuration, even if there is a day when dinner is cooked or hot water is cooked or hot watered specifically in a predetermined period in the past, the operation history of that day is excluded from the target of learning control. Therefore, it is possible to improve the estimation accuracy of the hot water filling start time B1 and the dinner cooking start time D1.

The hot water supply system 2 of this embodiment includes a tank 10 for storing water, a heat pump 50 for boiling water in the tank 10 (an example of a heat source machine), and a supply path 40 (hot water supply path) for supplying water from the tank 10 to the bathtub 58. An example), a control unit 70 capable of communicating with the cooking device 100, and a control unit 302 (an example of the control device) are provided. The control unit 70 and the control unit 302 set the hot water filling start time, which is the time when the water supply to the bathtub 58 was started, for each day in the past predetermined period (for example, 7 days), and the cooking device 100 for dinner. Based on the dinner cooking start time, which is the time when cooking is started, the hot water filling start time B1 and the dinner cooking start time D1 of the day are estimated. The control unit 70 and the control unit 302 set the second heat pump operation time B0 (an example of the boiling start time) of the day based on the estimated hot water filling start time B1 of the day, and set the second heat pump. When the heat pump operation time B0 arrives, the heat pump 50 is configured to boil water in the tank 10. The control unit 70 and the control unit 302 set a second heat pump operation time when the cooking device 100 starts cooking dinner on the day before the estimated dinner cooking start time D1 on the day arrives. It is configured to accelerate B0.

In the hot water supply system 2 of the present embodiment, the control unit 70 and the control unit 302 are set when the cooking device 100 starts cooking dinner on the day after the estimated dinner cooking start time D1 on the day arrives. The second heat pump operating time B0 is not changed.

(Example 2)
The hot water supply system 202 of this embodiment has the same configuration as the hot water supply system 2 of the first embodiment shown in FIG. The content of the correction process for the heat pump operating time B0 of 2 is different.

(Learning control)
In the hot water supply system 202 of the present embodiment, instead of specifying the dinner cooking start time D1, the control unit 302 sets the time difference from the start of the dinner cooking to the start of the hot water filling as "dinner cooking / hot water filling time difference ΔD1". Identify as. Specifically, the control unit 302 calculates the time difference from the dinner cooking start time to the hot water filling start time for the past 7 days from the operation history for the past 7 days, and sets the longest time difference in the past 7 days. It is specified as the time difference ΔD1 between cooking and hot water for dinner. For example, the control unit 302 specifies 2 hours as a dinner cooking / hot water filling time difference ΔD1 (see FIG. 3).

(Correction processing of the second heat pump operation time B0)
In this embodiment, the control unit 70 monitors that the cooking apparatus 100 starts cooking dinner after the first heat pump operation process (see FIG. 4) is completed until the second heat pump operation time B0 is reached. do. Specifically, when the control unit 70 receives the cooking start signal from the cooking device 100 and the current time is before a predetermined time (for example, 14:00), the cooking device 100 is performing cooking. Judge that it is not cooking for dinner. Further, when the control unit 70 receives the cooking start signal from the cooking device 100, even if the current time is after the predetermined time (for example, 14:00), before the predetermined time (for example, 10 minutes) elapses. When the cooking end signal is received from the cooking apparatus 100, it is determined that the cooking is not the cooking of dinner. When the control unit 70 receives the cooking start signal from the cooking device 100, the current time is later than the predetermined time (for example, 14:00), and even if the predetermined time (for example, 10 minutes) elapses, the control unit 70 still receives the cooking start signal from the cooking device 100. When the cooking end signal is not received, it is determined that the cooking device 100 has started cooking dinner.

The control unit 70 calculates the time difference ΔD1'from the time when the cooking device 100 starts cooking dinner to the hot water filling start time B1, and when the calculated time difference ΔD1'is larger than the dinner cooking / hot water filling time difference ΔD1. , The second heat pump operation time B0 is advanced. For example, the control unit 70 calculates the difference ΔT between the calculated time difference ΔD1 ′ and the dinner cooking / hot water filling time difference ΔD1 and advances the second heat pump operation time B0 by ΔT. As a result, even if the start of the hot water on the day is earlier than the hot water start time B1, the hot water required for the start of the hot water can be stored in the tank 10.

In this embodiment, the control unit 70 determines that the time difference ΔD1'from the time when the cooking device 100 starts cooking dinner to the hot water filling start time B1 is smaller than the dinner cooking / hot water filling time difference ΔD1. The second heat pump operation time B0 is not changed. In this case, it is considered that the start of cooking for dinner on the day is delayed, but the start of the hot water on the day may not change from the hot water start time B1. With the above configuration, even in such a case, hot water can be reliably stored in the tank 10 at the start of hot water filling. Unlike this, when the time difference ΔD1'from the time when the cooking device 100 starts cooking dinner to the hot water filling start time B1 is smaller than the dinner cooking / hot water filling time difference ΔD1, the second heat pump is operated. It may be configured to delay the time B0.

In the above, the control unit 70 calculates the time difference from the dinner cooking start time to the hot water filling start time for the past 7 days from the operation history for the past 7 days, and averages the time difference in the past 7 days for dinner. It may be specified as a cooking / hot water filling time difference ΔD1.

Alternatively, the control unit 70 specifies the second longest time difference from the dinner cooking start time to the hot water filling start time in the past 7 days as the dinner cooking / hot water filling time difference ΔD1 from the operation history for the past 7 days. You may. With such a configuration, even if there is a day when the time difference from cooking dinner to hot water is extremely long in the past predetermined period, the operation history of that day is excluded from the target of learning control. By doing so, it is possible to improve the estimation accuracy of the dinner cooking / hot water filling time difference ΔD1.

The hot water supply system 92 of this embodiment includes a tank 10 for storing water, a heat pump 50 for boiling water in the tank 10 (an example of a heat source machine), and a supply path 40 (hot water supply path) for supplying water from the tank 10 to the bathtub 58. An example), a control unit 70 capable of communicating with the cooking device 100, and a control unit 302 (an example of the control device) are provided. The control unit 70 and the control unit 302 set the hot water filling start time, which is the time when the water supply to the bathtub 58 was started, for each day in the past predetermined period (for example, 7 days), and the cooking device 100 for dinner. Estimate the hot water filling start time B1 and the dinner cooking / hot water filling time difference ΔD1 on the day based on the dinner cooking / hot water filling time difference, which is the time difference between the start of cooking and the start of water supply to the tub 58. It is configured as follows. The control unit 70 and the control unit 302 set the second heat pump operation time B0 (an example of the boiling start time) of the day based on the estimated hot water filling start time B1 of the day, and set the second heat pump. When the heat pump operation time B0 arrives, the heat pump 50 is configured to boil water in the tank 10. In the control unit 70 and the control unit 302, the time difference from the time when the cooking device 100 starts cooking dinner to the estimated hot water filling start time B1 on the day is the estimated dinner cooking / hot water filling time difference on the day. When it is larger than ΔD1, it is configured to advance the set second heat pump operation time B0.

In the hot water supply system 2 of the present embodiment, the time difference between the control unit 70 and the control unit 302 from the time when the cooking device 100 starts cooking dinner on the day to the estimated hot water filling start time B1 on the day is the day. It is configured so that the set second heat pump operation time B0 is not changed when the estimated dinner cooking / hot water filling time difference ΔD1 is smaller.

In the hot water supply systems 2 and 92 of the first and second embodiments, when the control unit 70 and the control unit 302 finish cooking before a predetermined time (for example, 10 minutes) elapses after the cooking device 100 starts cooking. In addition, it is configured to determine that the cooking is not dinner cooking.

In the hot water supply systems 2 and 92 of the first and second embodiments, when the control unit 70 and the control unit 302 start cooking in the cooking device 100 before a predetermined time (for example, 14:00), the cooking is for dinner. It is configured to judge that it is not cooking.

In the hot water supply systems 2 and 92 of the first and second embodiments, when the control unit 70 and the control unit 302 start cooking in the cooking device 100 after the start of water supply to the bathtub 58, the cooking is for dinner. It is configured to judge that it is not cooking.

In the hot water supply systems 2 and 92 of the first and second embodiments, the control unit 302 of the server device 300 corresponds to the server-side control device, and the control unit 70 corresponds to the client-side control device capable of communicating with the control unit 302.

In the hot water supply systems 2 and 92 of the first and second embodiments, a part or all of the processing performed by the control unit 302 of the server device 300 is performed by the control unit 70 of the hot water supply device 4, the remote controller 80, and the cooking device 100. The configuration may be performed by the control unit 102 of the above. For example, among the processes related to learning control performed by the control unit 302 of the server device 300, the hot water supply start time S1, the first hot water supply amount Q1, the hot water supply start time B1, the hot water supply end time G1, the first heat pump operation time S0, The process for specifying the second heat pump operation time B0 and the heat pump stop time G0 is performed by the control unit 70 of the hot water supply device 4, and the process for specifying the dinner cooking start time D1 or the dinner cooking / hot water filling time difference ΔD1 is performed by the server device 300. The configuration may be performed by the control unit 302 of the above.

In the hot water supply systems 2 and 92 of the first and second embodiments, a part or all of the processing performed by the control unit 70 is performed by the remote controller 80, the control unit 102 of the cooking device 100, and the control unit 302 of the server device 300. It may be configured.

In the hot water supply systems 2 and 92 of the first and second embodiments, the configuration in which the heat pump 50 is used as the heat source machine for boiling the water in the tank 10 has been described. The water in the tank 10 may be boiled using another heat source machine.

Although the examples of the present invention have been described in detail above, these are merely examples and do not limit the scope of claims. The techniques described in the claims include various modifications and modifications of the specific examples illustrated above.

The technical elements described herein or in the drawings exhibit their technical usefulness alone or in various combinations, and are not limited to the combinations described in the claims at the time of filing. In addition, the techniques illustrated in the present specification or drawings can achieve a plurality of purposes at the same time, and achieving one of the purposes itself has technical usefulness.

2: Hot water supply system 4: Hot water supply device 10: Tank 12: Thermista 14: Thermista 16: Thermista 17: Thermista 18: Thermista 20: Tank water circulation path 22: Circulation pump 24: Thermista 30: Tap water introduction path 30a: First introduction path 30b: Second introduction path 31: Tap water supply source 32: Thermista 40: Supply path 42: Mixing valve 44: Thermista 46: Hot water valve 48: Bathroom 50: Heat pump 54: Shower 56: Curran 58: Bathtub 60: Combustion device 70: Control unit 80: Remote control 80a: Display unit 80b: Operation unit 92: Hot water supply system 100: Cooking device 102: Control unit 200: Router 202: Hot water supply system 250: Internet 300: Server device 302: Control unit

Claims (8)

A tank to store water and
A heat source machine that boils water in the tank,
The hot water route that supplies water from the tank to the bathtub,
Equipped with a control device that can communicate with the cooking device
The control device has a hot water filling start time, which is the time when water supply to the bathtub is started, and a dinner cooking start time, which is the time when dinner cooking is started by the cooking device, for each day in the past predetermined period. It is configured to estimate the hot water start time and dinner cooking start time of the day based on
The control device sets the boiling start time of the day based on the estimated boiling start time of the day, and when the set boiling start time arrives, the heat source machine executes the boiling of the water in the tank. Is configured to
The control device is configured to advance the set boiling start time if the cooking device starts cooking dinner on the day before the estimated dinner cooking start time of the day arrives. Hot water supply system. The control device is configured not to change the set boiling start time when the cooking device starts cooking dinner on the day after the estimated dinner cooking start time of the day has arrived. The hot water supply system of claim 1. A tank to store water and
A heat source machine that boils water in the tank,
The hot water route that supplies water from the tank to the bathtub,
Equipped with a control device that can communicate with the cooking device
The control device supplies water to the tub after the hot water filling start time, which is the time when the water supply to the tub is started, and the time when the cooking device starts cooking dinner for each day in the past predetermined period. Based on the time difference between the dinner cooking and hot water filling, which is the time difference until the start of
The control device sets the boiling start time of the day based on the estimated boiling start time of the day, and when the set boiling start time arrives, the heat source machine executes the boiling of the water in the tank. Is configured to
The control device is set when the time difference from the time when the cooking device starts cooking dinner on the day to the estimated hot water filling start time on the day is larger than the estimated dinner cooking / hot water filling time difference on the day. A hot water supply system that is configured to accelerate the start time of boiling. The control device is set when the time difference from the time when the cooking device starts cooking dinner on the day to the estimated hot water filling start time on the day is smaller than the estimated dinner cooking / hot water filling time difference on the day. The hot water supply system according to claim 3, which is configured so as not to change the boiling start time. The control device is configured to determine that the cooking is not dinner cooking if the cooking is completed before a predetermined time has elapsed from the start of cooking in the cooking device, according to claim 1. The hot water supply system according to any one of 4. The hot water supply according to any one of claims 1 to 5, wherein the control device is configured to determine that the cooking is not the cooking of a supper when the cooking is started in the cooking device before the predetermined time. system. Any of claims 1 to 6, wherein the control device is configured to determine that cooking is not dinner cooking if cooking is started in the cooking device after the start of water supply to the bathtub. The hot water supply system of one item. The hot water supply system according to any one of claims 1 to 7, wherein the control device includes a server-side control device and a client-side control device capable of communicating with the server-side control device.

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