JP6637833B2 - Thermal equipment - Google Patents

Description

  The technology disclosed in this specification relates to thermal equipment.

  Patent Document 1 discloses a heat device including a heat pump unit that heats a heat medium, a tank that stores the heat medium heated by the heat pump unit, and a control device that controls the operation of the heat device. The control device includes a clock unit that measures time, a storage unit that stores a power failure start time at which the thermal device has failed, and a specifying unit that specifies the length of time during which the thermal device has failed. The specifying unit obtains the current time from the timing unit as the power failure end time when the thermal device returns from the power failure, and determines whether the thermal device is based on the acquired power failure end time and the power failure start time stored in the storage unit. Identify the length of time the power outage occurred.

JP 2013-242091 A

  In order to obtain the power failure end time from the clock unit, the clock unit needs to keep time even during a power failure of the thermal equipment. As a means for causing the timer to keep time even during a power failure of the thermal device, there is a thermal device provided with an auxiliary power supply for supplying power to the timer during a power failure of the thermal device. However, the power that the auxiliary power supply can supply is finite. For this reason, for example, when the period during which the power of the thermal device is interrupted becomes long, the supply of power from the auxiliary power supply to the timer unit may stop, and the operation of the timer unit may stop. In this case, when the thermal device returns from the power failure, the current time cannot be obtained from the clock unit. For this reason, it may not be possible to specify the length of time during which the thermal equipment has been out of power. Therefore, a technique for increasing the possibility of specifying the length of time during which a thermal device has lost power is desired.

  This specification proposes a technique that increases the possibility of specifying the length of time during which a thermal device has been out of power.

The heat device disclosed in this specification is a heat pump unit including a heat pump heat source that heats a heat medium, a tank unit including a tank that stores the heat medium heated by the heat pump heat source, and can communicate with external devices. And a control device capable of acquiring the current time from the device. The control device includes a storage unit that stores a power failure start time at which the thermal device has lost power, a length of time during which the thermal device has failed, and a time period from the start of the thermal device power failure to the end of the power failure, and a specification unit that identifies the duration. And a control board. The control board includes a timekeeping unit that measures time, and an auxiliary power supply that supplies power to the timekeeping unit during a power failure. When the thermal device returns from the power failure, the identifying unit acquires the current time from the external device or the clock unit as the power failure end time, and performs the thermal operation based on the acquired power failure end time and the power failure time stored in the storage unit. The length of time during which the device has been powered down and the period from the start of power failure to the end of power failure of the thermal device are specified. The control device can execute a high-temperature heating operation in which the heat pump heat source is driven to heat the temperature of the heat medium in the tank to a sterilizable temperature. The control device executes the high-temperature heating operation when determining that the length of time during which the thermal device has been out of power is longer than the predetermined time.

According to the above configuration, when the thermal device returns from the power failure, the specifying unit only needs to be able to acquire the current time from at least one of the external device and the clock unit. Therefore, even when the current time cannot be obtained from one of the external device and the timekeeping unit, by acquiring the current time from the other external device or the timekeeping unit, the specifying unit can determine the length of time during which the thermal device has been out of power. And the period from the start of the power failure of the thermal device to the end of the power failure can be specified. As a result, as compared with the case where the power failure end time is obtained only from the clock unit, the length of time during which the thermal device has been powered down and the period from the start of power failure to the end of power failure of the thermal device can be specified. Possibilities can be increased.
In addition, when the heat medium in the tank is kept at a low temperature (for example, a temperature of 60 ° C. or less) for a predetermined time (for example, 96 hours), fungi (eg, Legionella bacteria) may propagate. In this case, by heating the temperature of the heat medium in the tank to a temperature at which the fungi can be sterilized, it is possible to prevent the use of the heat medium in which the fungi are growing. According to the above configuration, the control device executes the high-temperature heating operation when the length of time during which the thermal device has lost power is longer than the predetermined time. For this reason, even if fungi propagate in the heat medium in the tank while the power of the thermal equipment is stopped, it is possible to prevent the use of the heat medium in which the fungi are propagated.

The figure which shows typically the structure of the hot water supply system 2 which concerns on an Example. The figure which represents the structure of the tank controller 74 typically. The figure which shows typically the time zone in which a hot water supply is performed in a specific household. The figure which represents the process of the hot-water supply system 2 typically. The flowchart which shows the high temperature heating process when the hot-water supply system 2 returns from a power failure. The flowchart which shows the scheduled start time process when the hot water supply system 2 returns from a power failure. The figure which shows the hot water supply start time, hot water filling start time, and hot water supply end time memorize | stored in the non-volatile memory. The figure which represents typically the structure of the tank controller 74 concerning 2nd Example. The figure which represents typically the process of the hot-water supply system 2 which concerns on 2nd Example. The flowchart which shows the high temperature heating process when the hot water supply system 2 which concerns on 2nd Example recovers from a power failure.

  The main features of the embodiment described below are listed. The technical elements described below are independent technical elements, each exhibiting technical utility independently or in various combinations, and are not limited to the combinations described in the claims at the time of filing. Absent.

(Characteristic 1) The control device is configured to set a scheduled start time of the heating operation according to the usage history of the heat medium within a predetermined period in the past, and to execute the heating operation when the set scheduled start time is reached. You may. In this case, when the time from when the supply of the heat medium is to be performed is included in the period from the power failure start time to the power failure end time of the thermal device, the control device determines that the power failure start time and the power failure end time of the thermal device It is preferable to use predetermined information as the use result of the heat medium during the period up to.

The control device sequentially stores the use results of the heat medium within a predetermined period in the past. The control device cannot operate while the thermal equipment is out of power. For this reason, while the thermal equipment is out of power, the control device cannot store the usage record of the heat medium. Therefore, if the time from when the power failure starts to when the power failure ends (hereinafter referred to as the power failure period) includes the time at which the supply of the heat medium should be performed, the supply of the heat medium during the power failure period is performed. At the time to be performed, the usage record of the heat medium is not stored. In this case, if the supply of the heat medium is executed after the heat equipment returns from the power failure, the heat equipment after the heat equipment recovers from the power failure at the time when the usage record of the heat medium during the power failure period should be stored. The usage record of the medium is stored. As described above, since the usage record of the heat medium after the thermal device has returned from the power failure is not stored at the correct time, the scheduled start time of the heating operation may not be set accurately. According to the above configuration, the predetermined information is used at the time when the supply of the heat medium should be performed during the power outage period. In this case, the use result of the heat medium after the heat device has returned from the power failure is stored at a time when the use result of the heat medium after the heat device has returned from the power failure should be stored. Therefore, the control device can accurately set the scheduled start time of the heating operation even after the thermal device returns from the power failure.

Another heat device disclosed in this specification is a heat pump unit including a heat pump heat source that heats a heat medium, a tank unit including a tank that stores a heat medium heated by the heat pump heat source, and can communicate with external devices. And a control device capable of acquiring the current time from an external device. The control device includes a storage unit that stores a power failure start time at which the thermal device has lost power, a length of time during which the thermal device has failed, and a time period from the start of the thermal device power failure to the end of the power failure, and a specification unit that identifies the duration. And a control board. The control board includes a timekeeping unit that measures time, and an auxiliary power supply that supplies power to the timekeeping unit during a power failure. When the thermal device returns from the power failure, the identifying unit acquires the current time from the external device or the clock unit as the power failure end time, and performs the thermal operation based on the acquired power failure end time and the power failure time stored in the storage unit. The length of time during which the device has been powered down and the period from the start of power failure to the end of power failure of the thermal device are specified. The control device sets a scheduled start time of the heating operation according to the use result of the heat medium in the past predetermined period within the predetermined past period, and executes the heating operation when the set scheduled start time is reached. It is configured. When the time from when the power supply of the heating device is to be executed is included in the period from the power failure start time to the power failure end time of the thermal device, the control device controls the period from the power failure start time to the power failure end time of the thermal device. Predetermined information is used as the use result of the heat medium in the inside .

According to the above configuration, when the thermal device returns from the power failure, the specifying unit only needs to be able to acquire the current time from at least one of the external device and the clock unit. Therefore, even when the current time cannot be obtained from one of the external device and the timekeeping unit, by acquiring the current time from the other external device or the timekeeping unit, the specifying unit can determine the length of time during which the thermal device has been out of power. And the period from the start of the power failure of the thermal device to the end of the power failure can be specified. As a result, as compared with the case where the power failure end time is obtained only from the clock unit, the length of time during which the thermal device has been powered down and the period from the start of power failure to the end of power failure of the thermal device can be specified. Possibilities can be increased.
In addition, the control device sequentially stores the use results of the heat medium within a predetermined period in the past. The control device cannot operate while the thermal equipment is out of power. For this reason, while the thermal equipment is out of power, the control device cannot store the usage record of the heat medium. Therefore, if the time from when the power failure starts to when the power failure ends (hereinafter referred to as the power failure period) includes the time at which the supply of the heat medium should be performed, the supply of the heat medium during the power failure period is performed. At the time to be performed, the usage record of the heat medium is not stored. In this case, if the supply of the heat medium is executed after the heat equipment returns from the power failure, the heat equipment after the heat equipment recovers from the power failure at the time when the usage record of the heat medium during the power failure period should be stored. The usage record of the medium is stored. As described above, since the usage record of the heat medium after the thermal device has returned from the power failure is not stored at the correct time, the scheduled start time of the heating operation may not be set accurately. According to the above configuration, the predetermined information is used at the time when the supply of the heat medium should be performed during the power outage period. In this case, the use result of the heat medium after the heat device has returned from the power failure is stored at a time when the use result of the heat medium after the heat device has returned from the power failure should be stored. Therefore, the control device can accurately set the scheduled start time of the heating operation even after the thermal device returns from the power failure.

(Feature 2 ) The storage unit is a non-volatile memory, acquires a current time from an external device or a clock unit at a predetermined cycle, and stores the last stored time of the acquired current time before the power failure of the thermal device during the power failure. It may be stored as a start time. In this case, when the thermal device returns from the power failure, the identifying unit obtains the current time from the external device or the clock unit as the power failure end time, and sets the acquired power failure end time and the power failure start time stored in the storage unit. Based on this, it is preferable to specify the length of time during which the thermal device has lost power and the period from the start of power failure to the end of power failure of the thermal device.
The power that can be supplied by the auxiliary power supply unit is limited. For this reason, when the power failure of the thermal equipment is long, the power supply from the auxiliary power supply unit to the timer unit is stopped. In this case, the operation of the timing unit stops. Therefore, for example, if the power outage start time is stored in the timekeeping unit, the operation of the timekeeping unit may be stopped and the power outage start time may be erased. According to the above configuration, the power failure start time is stored in a storage unit different from the clock unit. In addition, the power failure start time stored in the storage unit is not deleted even if the thermal equipment loses power. Therefore, when the thermal device returns from the power failure, the specifying unit can reliably acquire the power failure start time. This makes it possible to reliably specify the length of time during which the thermal device has lost power and the period from the start of power failure to the end of power failure of the thermal device.

The storage unit may be provided in the clock unit, and the storage unit may store the current time of the clock unit when the power of the thermal device has failed as the power failure start time. In this case, when the thermal device returns from the power failure, the identifying unit obtains the current time from the external device or the clock unit as the power failure end time, and sets the acquired power failure end time and the power failure start time stored in the storage unit. Based on this, it is preferable to specify the length of time during which the thermal device has lost power and the period from the start of power failure to the end of power failure of the thermal device.
According to the above configuration, the storage unit included in the clock unit can store the power failure start time. In this case, the storage unit is supplied with power from the auxiliary power supply unit. Therefore, even if the thermal equipment loses power, the power failure start time stored in the storage unit is not deleted. Therefore, the control device does not need to include a storage unit in which the power failure time stored in the storage unit is not erased even when the thermal device loses power, for example, a nonvolatile memory.

Another heat device disclosed in this specification is a heat pump unit including a heat pump heat source that heats a heat medium, a tank unit including a tank that stores a heat medium heated by the heat pump heat source, and can communicate with external devices. And a control device capable of acquiring the current time from an external device. The control device includes a storage unit that stores a power failure start time at which the thermal device has lost power, a length of time during which the thermal device has failed, and a time period from the start of the thermal device power failure to the end of the power failure, and a specification unit that identifies the duration. And a control board. The control board includes a timekeeping unit that measures time, and an auxiliary power supply that supplies power to the timekeeping unit during a power failure. When the thermal device returns from the power failure, the identifying unit acquires the current time from the external device or the clock unit as the power failure end time, and performs the thermal operation based on the acquired power failure end time and the power failure time stored in the storage unit. The length of time during which the device has been powered down and the period from the start of power failure to the end of power failure of the thermal device are specified. The storage unit is a non-volatile memory, acquires a current time from an external device or a clock unit at predetermined intervals, and stores the last stored time before the power failure of the thermal device among the acquired current times as a power failure start time. I do . In this case, when the thermal device returns from the power failure, the identifying unit obtains the current time from the external device or the clock unit as the power failure end time, and sets the acquired power failure end time and the power failure start time stored in the storage unit. based on the length of time the thermal device was a power failure, a period from the start of power failure of the thermal device to a power outage ends, it identifies.

According to the above configuration, when the thermal device returns from the power failure, the specifying unit only needs to be able to acquire the current time from at least one of the external device and the clock unit. Therefore, even when the current time cannot be obtained from one of the external device and the timekeeping unit, by acquiring the current time from the other external device or the timekeeping unit, the specifying unit can determine the length of time during which the thermal device has been out of power. And the period from the start of the power failure of the thermal device to the end of the power failure can be specified. As a result, as compared with the case where the power failure end time is obtained only from the clock unit, the length of time during which the thermal device has been powered down and the period from the start of power failure to the end of power failure of the thermal device can be specified. Possibilities can be increased.
Further, the power that can be supplied by the auxiliary power supply unit is limited. For this reason, when the power failure of the thermal equipment is long, the power supply from the auxiliary power supply unit to the timer unit is stopped. In this case, the operation of the timing unit stops. Therefore, for example, if the power outage start time is stored in the timekeeping unit, the operation of the timekeeping unit may be stopped and the power outage start time may be erased. According to the above configuration, the power failure start time is stored in a storage unit different from the clock unit. In addition, the power failure start time stored in the storage unit is not deleted even if the thermal equipment loses power. Therefore, when the thermal device returns from the power failure, the specifying unit can reliably acquire the power failure start time. This makes it possible to reliably specify the length of time during which the thermal device has lost power and the period from the start of power failure to the end of power failure of the thermal device.

(First embodiment)
As shown in FIG. 1, the hot water supply system 2 according to the present embodiment includes an HP (heat pump) unit 4, a tank unit 6, and a burner unit 8.

  The HP unit 4 is a heat source that heats water by absorbing heat from the outside air. The HP unit 4 includes a compressor 10, a condenser 12, an expansion valve 14, and an evaporator 16. The HP unit 4 heats water by absorbing heat from outside air by circulating a refrigerant (for example, a CFC-based refrigerant) in the order of the compressor 10, the condenser 12, the expansion valve 14, and the evaporator 16. The compressor 10 pressurizes the refrigerant to a high temperature and a high pressure. The condenser 12 cools the refrigerant by heat exchange with water. An HP going path 19 and an HP returning path 21 are connected to both ends of the water flow path of the condenser 12, respectively. The expansion valve 14 reduces the pressure of the refrigerant to a low temperature and a low pressure. The evaporator 16 heats the refrigerant by heat exchange with the outside air. The HP unit 4 further includes a circulation pump 18 for circulating water to the condenser 12, a return thermistor 20 for detecting the temperature of water flowing into the condenser 12, and a forward thermistor 22 for detecting the temperature of water flowing out of the condenser 12. , An HP outside air temperature thermistor 23 for detecting outside air temperature, and an HP controller 24 for controlling the operation of each component of the HP unit 4.

  The tank unit 6 includes a tank 30, a mixing valve 32, and a bypass control valve. The tank 30 is a closed container whose outside is covered with a heat insulating material and stores water inside. The capacity of the tank 30 of this embodiment is, for example, 100 liters. When the circulation pump 18 of the HP unit 4 is driven, water at the bottom of the tank 30 is sent to the condenser 12 via the tank going path 31 and the HP going path 19. The water heated by the condenser 12 and having a high temperature is returned into the tank 30 from the top of the tank 30 via the HP return path 21 and the tank return path 33. When the water heated by the HP unit 4 flows into the tank 30, a temperature stratification in which a high-temperature water layer is stacked on a low-temperature water layer is formed inside the tank 30. The tank 30 is provided with an upper thermistor 36 for detecting the temperature of the upper water, an intermediate thermistor 37 for detecting the temperature of the intermediate water, and a lower thermistor 38 for detecting the temperature of the lower water. In this embodiment, the upper thermistor 36 is disposed at a position of 6 liters from the top of the tank 30, the intermediate thermistor 37 is disposed at a position of 12 liters from the top of the tank 30, and the lower thermistor 38 is disposed at the position of the tank 30. 30 liters from the top.

  Tap water is supplied to the tank unit 6 via a water supply path 40. The water supply path 40 is provided with a pressure reducing valve 42 for reducing the pressure of the water supply and a water input thermistor 44 for detecting the temperature TW of the water supply. The water supply path 40 branches into a tank water supply path 46 communicating with the bottom of the tank 30 and a tank bypass path 48 communicating with the mixing valve 32. Check valves 50 and 52 are attached to the tank water supply path 46 and the tank bypass path 48, respectively. Further, a water-side water amount sensor 54 that detects the flow rate of tap water flowing into the mixing valve 32 is attached to the tank bypass path 48. The top of the tank 30 and the mixing valve 32 communicate with each other via a tank tapping path 56. A check valve 58 and a hot water amount sensor 60 for detecting the flow rate of water from the tank 30 flowing into the mixing valve 32 are attached to the tank outlet path 56.

  The mixing valve 32 mixes the tap water flowing from the tank bypass path 48 and the water from the tank 30 flowing from the tank tapping path 56 and sends out the mixed water to the first hot water supply path 62. The mixing valve 32 is driven by a stepping motor to adjust the opening on the tank bypass path 48 (opening on the water side) and the opening on the tank tapping path 56 (opening on the hot water side). A mixing thermistor 64 for detecting the temperature of water sent from the mixing valve 32 is attached to the first hot water supply path 62.

  From the tank unit 6, hot water is supplied to a hot water supply point such as a kitchen, a shower, or a curan via a second hot water supply path 66. The second hot water supply path 66 is provided with a hot water supply outlet thermistor 68 for detecting the temperature of water supplied to the hot water supply point, and a check valve 70. The first hot water supply path 62 and the second hot water supply path 66 are connected by a hot water supply bypass path 72. A bypass control valve 34 is attached to the hot water supply bypass path 72.

  The tank unit 6 further includes a tank controller 74. As shown in FIG. 2, the tank controller 74 includes a control unit 172, a nonvolatile memory 174, and a control board 182. The control unit 172 controls the operation of each component of the tank unit 6. Further, when hot water supply system 2 returns from a power failure, control unit 172 determines the length of time during which the hot water supply system 2 has been powered down (hereinafter referred to as a power failure time), and from the start of the power failure of hot water supply system 2 to the end of the power failure. (Hereinafter referred to as a power outage period). The non-volatile memory 174 stores the scheduled start time of the heating operation and the like.

  The control board 182 includes a real-time clock (hereinafter, referred to as an RTC) 184 and a capacitor 188. The RTC 184 keeps time. Note that the time also includes date information. RTC 184 is set at 00:00:00 on January 1, 2000 as the RTC initial time. Capacitor 188 is an electric double layer capacitor such as Gold Capacitor (registered trademark). Capacitor 188 charges when hot water supply system 2 is supplied with power, and discharges and supplies power to RTC 184 when hot water supply system 2 is out of power. Therefore, the RTC 184 can keep time even while the hot water supply system 2 is out of power. The RTC 184 includes a RAM 186. RAM 186 stores a power failure start time TS of hot water supply system 2. Communication is performed between the control unit 172 and the RTC 184 every first predetermined cycle. Therefore, when communication with control unit 172 is not performed, RTC 184 determines that hot water supply system 2 has lost power, and stores the current time in RAM 186 as power failure start time TS.

  The burner unit 8 in FIG. 1 includes a burner 80, a heat exchanger 82, a bypass servo 84, a water amount servo 86, and a hot water valve 88. The burner 80 is an auxiliary heat source device that heats water flowing through the heat exchanger 82 by burning fuel gas. Fuel gas is supplied to the burner 80 via a gas supply pipe 81. Water from the first hot water supply path 62 of the tank unit 6 flows into the heat exchanger 82 via the burner outward path 90. The water that has passed through the heat exchanger 82 flows out through the burner return path 92 to the second hot water supply path 66 of the tank unit 6. A water amount servo 86 for adjusting the flow rate of water flowing through the burner outward path 90 and a water amount sensor 91 for detecting the flow rate of water flowing through the burner outward path 90 are attached to the burner outward path 90. The burner outward path 90 and the burner return path 92 communicate with each other via a burner bypass path 94. A bypass servo 84 is attached to a connection between the burner outward path 90 and the burner bypass path 94. The bypass servo 84 adjusts the flow rate of water flowing from the burner outward path 90 to the burner bypass path 94. A burner hot water supply thermistor 96 for detecting the temperature of water flowing out of the heat exchanger 82 is attached to the burner return path 92. A hot water path 98 branches off from the burner return path 92. In the burner return path 92, a hot water valve 88 is attached to the hot water path 98. From the burner unit 8, hot water is supplied to a bathtub as a hot water supply point via a hot water path 98.

  The burner unit 8 further includes a burner controller 100 for controlling the operation of each component of the burner unit 8, and a remote controller 76. The remote controller 76 can communicate with the burner controller 100 and the Wi-Fi router 190. The remote controller 76 can communicate with the tank controller 74 via the burner controller 100. As shown in FIG. 2, the remote controller 76 includes a display unit 76a and an operation unit 76b. In FIG. 2, the burner controller 100 between the tank controller 74 and the remote controller 76 is omitted for easy viewing. The display unit 76a displays various information about the hot water supply system 2, such as the current time. By operating the operation unit 76b, various instructions, information, and the like can be input to the hot water supply system 2. The various instructions that can be input include, for example, an instruction to start a heating operation described later. The inputtable information is, for example, the current time. In addition, the remote controller 76 notifies the user of various kinds of information relating to the settings and operations of the hot water supply system 2 by display and sound. Wi-Fi router 190 is a device provided outside hot water supply system 2 and can be connected to an external network. The Wi-Fi router 190 receives the current time from the external network by connecting to the external network. Remote controller 76 wirelessly communicates with Wi-Fi router 190, and receives the current time received by Wi-Fi router 190 from an external network. When the remote control 76 has not received the current time from the Wi-Fi router 190, the remote control initial time is set in the time information of the remote control 76.

  Electric power is supplied from the commercial power supply 108 to the HP unit 4, the tank unit 6, and the burner unit 8 of the hot water supply system 2 in FIG. For example, when power supply from the commercial power supply 108 is not performed normally due to a power failure or the like, the hot water supply system 2 cannot operate. On the other hand, even when power supply from the commercial power supply 108 is not performed normally, power is supplied to the RTC 184 from the capacitor 188. Therefore, the RTC 184 can operate in a state where power supply from the commercial power supply 108 is not performed normally. Hereinafter, a state in which power supply from the commercial power supply 108 is normally performed is referred to as a “normal state”, and a state in which power supply from the commercial power supply 108 is not normally performed is referred to as a “power failure state”.

  The HP controller 24 and the tank controller 74 can communicate with each other. The tank controller 74 and the burner controller 100 can communicate with each other. Therefore, the hot water supply system 2 can perform various operations such as a heating operation and a hot water supply operation by performing control in cooperation with the HP controller 24, the tank controller 74, and the burner controller 100. Hereinafter, the HP controller 24, the tank controller 74, and the burner controller 100 are collectively referred to simply as a controller.

  Next, the operation of the hot water supply system 2 will be described. Hot water supply system 2 can execute a heating operation and a hot water supply operation.

(Heating operation)
In the heating operation, hot water supply system 2 drives HP unit 4 to heat water in tank 30. The heating operation includes a low-temperature heating operation in which the target temperature TA after heating by the HP unit 4 is the low-temperature target temperature TL, and a high-temperature heating operation in which the target temperature TA after heating by the HP unit 4 is the high-temperature target temperature TH. I have. In the low-temperature heating operation, the water in the tank 30 is heated in order to use the hot water at a hot water supply location. Therefore, the low-temperature target temperature TL in the low-temperature heating operation is set to a temperature (for example, 45 ° C.) suitable for hot water supply. The high-temperature heating operation heats the water in the tank 30 in order to sterilize fungi (eg, Legionella bacteria) that may propagate in the water in the tank 30. In general, when water in the tank 30 is kept at a low temperature (for example, a temperature of 60 ° C. or less) for a long time (for example, 96 hours), fungi (eg, Legionella bacteria) may propagate. Therefore, the high-temperature target temperature TH in the high-temperature heating operation is set to a temperature (for example, 65 ° C.) sufficient to sterilize fungi (eg, Legionella). Thereby, it is possible to prevent hot water from which fungi can be propagated.

  When the heating operation is started, the HP controller 24 drives the compressor 10 to circulate the refrigerant in the order of the compressor 10, the condenser 12, the expansion valve 14, and the evaporator 16, and also drives the circulation pump 18. Thus, water is circulated between the tank 30 and the condenser 12. Thereby, the water sucked from the bottom of the tank 30 is heated to the target temperature TA in the condenser 12 and returned to the top of the tank 30. When the predetermined amount of water in the tank 30 is replaced with the water heated to the target temperature TA, the HP controller 24 ends the heating operation.

(Hot water supply operation)
In the hot water supply operation, water at a set hot water supply temperature is supplied to a hot water supply location. The controller determines that the flow rate (also referred to as hot water supply flow rate) obtained by adding the flow rate detected by the water-side water flow rate sensor 54 and the flow rate detected by the hot-water flow rate sensor 60 is equal to or higher than the minimum operating flow rate (for example, 2.4 L / min). Then, it is determined that the hot water supply has been started by opening the hot water supply point or filling the bathtub with hot water. Then, the controller executes the following non-combustion hot water supply operation or combustion hot water supply operation according to the temperature detected by the upper thermistor 36.

  When the temperature detected by the upper thermistor 36 is equal to or higher than the hot water supply set temperature, the controller executes the non-combustion hot water supply operation. In the non-burning hot water supply operation, the controller prohibits the combustion operation of the burner 80 and adjusts the opening of the mixing valve 32 such that the temperature detected by the mixing thermistor 64 becomes the hot water supply set temperature. Thereby, water whose temperature has been adjusted to the hot water supply set temperature is supplied to the hot water supply point.

  When the temperature detected by the upper thermistor 36 is lower than the hot water supply set temperature, the controller executes the hot water supply operation. In the combustion hot water supply operation, the controller permits the combustion operation of the burner 80 and mixes the mixture so that the temperature detected by the mixing thermistor 64 is lower than the set hot water supply temperature by the minimum heating capacity of the burner 80. The opening of the valve 32 is adjusted. In this case, the high-temperature water supplied from the upper portion of the tank 30 and the low-temperature water supplied from the water supply path 40 are mixed in the mixing valve 32, and then heated to the hot water supply set temperature by the burner 80. Supplied to

  If the hot water supply flow rate falls below the minimum operation flow rate during the above-described non-combustion hot water supply operation or combustion hot water supply operation, the controller determines that hot water supply has ended due to closure of the hot water supply location or termination of hot water supply to the bathtub. Then, the hot water supply operation ends.

(Specification of scheduled heating start time)
Next, a method of specifying the scheduled heating start time of the heating operation will be described. When the scheduled heating start time arrives, the controller executes the heating operation.

  Regarding the scheduled heating start time when the high-temperature heating operation is performed, the tank controller 74 stores in the nonvolatile memory 174 the scheduled high-temperature heating start time after a predetermined period (for example, 96 hours) has elapsed from the previous heating operation.

  Regarding the scheduled heating start time when the low-temperature heating operation is performed, the scheduled heating start time is specified in accordance with past use results of hot water supply. The specification of the scheduled heating start time when the low-temperature heating operation is performed will be described with reference to FIG. First, the tank controller 74 specifies a scheduled heating start time based on the tendency of hot water supply of a specific household. Specifically, each time hot water is supplied to the specific household, the tank controller 74 determines the time information indicating the time at which the hot water supply was started and the time at which the hot water supply was finished, and the amount of supplied water. And the supply amount information shown. The tank controller 74 stores the time information and supply amount information for one day as a one-day operation history of a specific household. In this embodiment, the tank controller 74 stores the operation history of the specific household for the past seven days (for example, FIG. 7).

  Next, the tank controller 74 specifies the earliest time among the times when the first hot water supply was started in the past seven days from the operation history for the past seven days of the specific household. Hereinafter, this time is referred to as “hot water supply start time S1”. For example, the tank controller 74 specifies 6:00 as the hot water supply start time S1 (see FIG. 3). In the first hot water supply, about 5 L to 20 L of water is supplied.

  Further, the tank controller 74 specifies the earliest time among the times when the hot water filling operation was started in the past seven days from the operation history for the past seven days of the specific household. Hereinafter, this time is referred to as “hot water filling start time B1”. As described above, in this embodiment, the specific household is set in advance to start the hot water operation at 20:00 every day. For example, the tank controller 74 specifies 20:00 as the hot water filling start time B1 (see FIG. 3). In the hot water filling operation, approximately 150 L to 180 L of water is supplied.

  Further, the tank controller 74 specifies the latest time of the last seven days in the last seven days from the operation history of the specific household for the past seven days. Hereinafter, this time is referred to as “hot water supply end time G1”. For example, the tank controller 74 specifies 0:00 as the hot water supply end time G1 (see FIG. 3).

  Further, the tank controller 74 specifies a first predetermined time α, a second predetermined time β, and a third predetermined time γ based on the water supply temperature TW measured by the water input thermistor 44.

  Next, the tank controller 74 specifies the first scheduled heating start time S0, which is a time earlier by the specified first predetermined time α from the hot water supply start time S1, and specifies the specified first heating start time S0 from the hot water filling start time B1. The second scheduled heating start time B0, which is a time earlier by the second predetermined time β, is specified. That is, the tank controller 74 stores the first scheduled heating start time S0 and the second scheduled heating start time B0 in the nonvolatile memory 174 as the scheduled heating start times. Then, when the scheduled heating start time stored in the nonvolatile memory 174 arrives, the tank controller 74 instructs the HP controller 24 to start the heating operation. In this way, a required amount of heated water can be prepared in the tank 30 before hot water supply is started. Further, in the high-temperature heating operation, fungi that may propagate in the water in the tank 30 can be sterilized.

(Process after starting power supply from commercial power supply)
Next, a process executed by control unit 172 when power supply from commercial power supply 108 to hot water supply system 2 is started will be described using FIG. The case where the power supply from the commercial power supply 108 is started is, for example, a case where the power is turned on by the enforcer after the installation of the hot water supply system 2 at the installation location is completed.

  In step S2, control unit 172 determines whether or not the current time is set on remote controller 76. Specifically, first, control unit 172 obtains the current time from remote controller 76. Next, when the obtained current time is not the remote control initial time, control unit 172 determines that the current time is set on remote control 76. If it is determined that the current time is set on remote controller 76 (YES in step S2), the process proceeds to step S4. Next, in step S4, control unit 172 transmits the current time acquired from remote controller 76 to RTC 184. In this case, the RTC 184 starts clocking using the current time received from the control unit 172. Hereinafter, the current time measured by the RTC 184 using the current time received from the remote controller 76 is referred to as a true current time.

  Next, in step S6, the RTC 184 monitors that the hot water supply system 2 shifts from the normal state to the power outage state. As described above, while the hot water supply system 2 is in the normal state, communication is performed between the control unit 172 and the RTC 184 at every first predetermined cycle. On the other hand, when hot water supply system 2 transitions to the power outage state, operation of control unit 172 stops, and communication between control unit 172 and RTC 184 is not executed. Therefore, when communication with control unit 172 is no longer performed, RTC 184 determines that hot water supply system 2 has shifted from the normal state to the power outage state, and the process proceeds to step S8. Further, the RTC 184 stores, in the RAM 186, the true current time at the time of determining that the communication with the control unit 172 has been stopped, as the power failure start time TS. Note that while hot water supply system 2 is in the normal state, control unit 172 may acquire the current time from remote controller 76 at every first predetermined cycle. In this case, the control unit 172 may transmit the acquired current time to the RTC 184. According to such a configuration, the difference between the current time measured by the RTC 184 and the current time measured by the remote controller 76 can be reduced.

  Next, in step S8, the RTC 184 monitors that the hot water supply system 2 returns from the power failure state to the normal state. Specifically, when communication with control unit 172 is restarted, RTC 184 determines that hot water supply system 2 has returned from the power outage state to the normal state. When it is determined that hot water supply system 2 returns from the power failure state to the normal state (YES in step S8), the process proceeds to step S10. In addition, the RTC 184 transmits to the control unit 172 a power restoration signal indicating that the control unit 172 has returned from the power outage state to the normal state. Thereby, the control unit 172 can know that the state has returned from the power failure state to the normal state.

  Next, in step S10, the control unit 172 receives the power failure start time TS stored in the RAM 186 and the true current time of the RTC 184 from the RTC 184. Specifically, immediately after determining that hot water supply system 2 has returned from the power failure state to the normal state, control unit 172 requests RTC 184 to transmit the power failure start time TS and the true current time. Since the hot water supply system 2 has returned to the normal state, the control unit 172 and the RTC 184 can communicate with each other, and the RTC 184 can transmit the power failure start time TS and the true current time to the control unit 172. Thereby, the control unit 172 receives the power failure start time TS and the true current time. The control unit 172 specifies the true current time received from the RTC 184 as the power failure end time TE. Note that the control unit 172 may receive the current time from the Wi-Fi router 190 via the remote controller 76. In this case, the control unit 172 only needs to receive the power failure start time TS from the RTC 184. The control unit 172 specifies the current time received from the Wi-Fi router 190 as the power failure end time TE. Therefore, the controller 172 may receive the current time from at least one of the Wi-Fi router 190 and the RTC 184.

  Next, in step S12, control unit 172 transmits the true current time received from RTC 184 to remote control 76. When the hot water supply system 2 shifts to the power outage state, there is a high possibility that the current time of the remote controller 76 has been erased. In this case, the remote control initial time is set as the current time of remote control 76 after hot water supply system 2 returns to the normal state. Therefore, when the control unit 172 transmits the true current time to the remote control 76, the remote control 76 can set the current time using the true current time.

  Next, in step S14, control unit 172 determines the length of time during which the hot water supply system 2 has been out of power (hereinafter, referred to as a power outage time), and the period from the start of power outage of hot water supply system 2 to the end of the outage (hereinafter, Power outage period). The control unit 172 specifies a power outage time and a power outage period based on the power outage start time TS and the power outage end time TE. Specifically, the control unit 172 specifies the power outage time by subtracting the power outage start time TS from the power outage end time TE. Further, the control unit 172 specifies a period from the power failure start time TS to the power failure end time TE as a power failure period.

  Next, in step S16, the control unit 172 executes a high-temperature heating process using the power outage time specified in S14. With reference to FIG. 5, a description will be given of the high-temperature heating process when the hot water supply system 2 returns from the power failure state to the normal state.

  In step S42, the control unit 172 determines whether the power outage time specified in S14 is equal to or longer than a predetermined time (for example, 96 hours). If it is determined that the power outage time is equal to or longer than a predetermined time (for example, 96 hours) (YES in step S42), the process proceeds to step S44. In step S44, the control unit 172 executes a high-temperature heating operation. Then, in step S46, control unit 172 monitors completion of the high-temperature heating operation. When it is determined that the high-temperature heating operation has ended (YES in step S46), control unit 172 ends the high-temperature heating process and proceeds to step S18 (FIG. 4).

  As described above, when the water in the tank 30 stays at a low temperature for a long time, there is a possibility that fungi may propagate. During the power outage state, the hot water supply system 2 cannot heat the water in the tank 30. Therefore, when the power outage continues for a long time, there is a high possibility that fungi have propagated in the water in the tank 30. Therefore, when it is determined that the power failure state has continued for a long time, the inside of the tank 30 can be sterilized by executing the high-temperature heating operation. As a result, after the hot water supply system 2 returns from the power outage state to the normal state, it is possible to prevent hot water from which fungi may propagate from being supplied.

  In step S18 in FIG. 4, the control unit 172 executes the scheduled start time process using the power outage period specified in step S14. The scheduled start time process when the hot water supply system 2 returns from the power failure state to the normal state will be described with reference to FIGS.

  In step S52, control unit 172 determines whether or not the time during which hot water supply is to be performed is included in the power outage period specified in step S14. The times at which hot water supply should be performed are the hot water supply start time, hot water filling start time, and hot water supply end time. For example, when at least one of the hot water supply start time, the hot water filling start time, and the hot water supply end time is included in the power outage period, control unit 172 determines YES in step S52, and the process proceeds to step S52. Proceed to S54. On the other hand, when it is determined that the time during which hot water supply is to be performed is not included in the power outage period (NO in step S54), control unit 172 ends the scheduled heating start time process.

  In step S54, control unit 172 reflects predetermined information on the hot water supply start time, hot water filling start time, or hot water supply end time during the power outage period. As shown in FIG. 7, the nonvolatile memory 174 stores, for example, a hot water supply start time, a hot water filling start time, and a hot water supply end time for the past seven days of a specific household. For example, when the power outage period is a period from 10:00 on Thursday to 10:00 on Friday, the hot water filling start time Be and hot water supply end time Ge on Thursday and the hot water supply start time Sf on Friday correspond to the power outage period. include. During the power outage period, hot water supply is not performed, so hot water filling start time Be, hot water supply end time Ge, and hot water supply start time Sf are not updated. Therefore, after the hot water supply system 2 has returned from the power outage state (Friday), when hot water filling is started, the hot water filling start time on Friday is updated as the hot water filling start time Be on Thursday. That is, a region in which the hot water filling start time, the hot water supply end time, or the hot water supply start time should be reflected is shifted. For this reason, the scheduled heating start time may not be able to be specified accurately. In order to avoid such a situation, in the present embodiment, predetermined information is reflected on the hot water filling start time Be on Thursday, the hot water supply end time Ge on Thursday, and the hot water supply start time Sf on Friday. The predetermined information is, for example, no use record, the last time (7 days before), the average value of the time for 7 days, and the like. Thus, after the hot water supply system 2 returns from the power outage state, it is possible to prevent a shift of the area in which the hot water supply start time, the hot water filling start time, and the hot water supply end time are reflected. That is, the hot water filling start time after the hot water supply system 2 returns from the power failure (Friday) is updated as the hot water filling start time Bf. As a result, even after the hot water supply system 2 returns from the power outage state, the scheduled heating start time can be correctly specified. When the reflection of the predetermined information is completed, the control unit 172 ends the scheduled heating start time process.

  On the other hand, if the current time is not set on remote controller 76 in step S2 of FIG. 4 (NO), control unit 172 does not transmit the current time to RTC 184, and the process proceeds to S22. In this case, the RTC 184 starts clocking using the RTC initial time. The current time of the RTC 184 in this case is called a provisional current time.

  In S22, RTC 184 monitors that hot water supply system 2 shifts from the normal state to the power outage state. If hot water supply system 2 has shifted to the power outage state (YES in step S22), the process proceeds to step S24. In addition, the RTC 184 stores the provisional current time at the time when the communication between the control unit 172 and the RTC 184 is not executed in the RAM 186 as the power failure start time TS. On the other hand, when hot water supply system 2 does not shift to the power outage state (NO in step S22), the process returns to step S2. That is, when the current time is set on remote controller 76 while hot water supply system 2 is in the normal state, the current time measured by RTC 184 switches from the provisional current time to the true current time.

  The processing in step S24 is the same as the processing in step S8. The processing in step S26 is almost the same as the processing in step S10. The difference between step S10 and step S26 is that in step S10, the true current time of the RTC 184 is used, and in step S26, the provisional current time of the RTC 184 is used. When the provisional current time of the RTC 184 is used in step S26, the control unit 172 does not transmit the provisional current time to the remote controller 76 in the subsequent processing. This is because the provisional current time is a time using the RTC initial time, and is significantly different from the actual current time.

  The processing in steps S28 to S32 is the same as the processing in steps S14 to S18.

  As described above, control unit 172 determines the power outage time and power outage period of hot water supply system 2 based on power outage start time TS stored in RAM 186 and power outage end time TE obtained from RTC 184 or Wi-Fi router 190. Can be identified. For this reason, for example, when the current time cannot be acquired from the Wi-Fi router 190 when the hot water supply system 2 returns from the power outage state to the normal state, the power outage time and the power outage period of the hot water supply system 2 are specified. Can be.

  Further, in the above embodiment, when it is determined that the power outage time of hot water supply system 2 is longer than the predetermined time, control unit 172 executes the high-temperature heating process. Thereby, after the hot water supply system 2 returns from the power outage state to the normal state, it is possible to prevent hot water from being supplied with water in which fungi may propagate.

  Further, in the above embodiment, when the time during which the hot water supply is to be performed is included in the power outage period, the control unit 172 uses the predetermined information as the hot water supply use result during the power outage period. Thus, it is possible to prevent a case where the area in which the actual result of hot water supply is to be stored is shifted and the scheduled start time of the heating operation cannot be correctly specified. As a result, the scheduled start time of the heating operation can be accurately specified even after the hot water supply system 2 has returned from the power outage state.

  In the above embodiment, the RTC 184 includes the RAM 186. The power failure start time TS of hot water supply system 2 is stored in RAM 186. In this case, the power from the capacitor 188 is supplied to the RAM 186. Therefore, even if the hot water supply system 2 fails, the power failure start time TS stored in the RAM 186 is not deleted. Therefore, it is not necessary to increase the capacity of the nonvolatile memory 174 and store the power failure start time TS in the nonvolatile memory 174.

  Here, the correspondence between the description of the first embodiment and the description of the claims will be described. Hot water supply system 2 is an example of “heat equipment”. Water is an example of a “heating medium”. A heat pump cycle including the compressor 10, the condenser 12, the expansion valve 14, and the evaporator 16 is an example of the “heat pump heat source”. The Wi-Fi router 190 is an example of an “external device”. The control unit 172 is an example of the “control device” and the “specification unit”. The RAM 186 is an example of a “storage unit”. The RTC 184 is an example of the “timer”. Capacitor 188 is an example of an “auxiliary power supply unit”.

(Second embodiment)
The difference from the first embodiment will be described with reference to FIGS. In the following, configurations common to the embodiments are denoted by the same reference numerals, and description thereof is omitted.

  In the second embodiment, the power failure start time TS of the hot water supply system 2 is stored in the nonvolatile memory 274. Communication is performed between the control unit 172 and the RTC 284 every second predetermined cycle (for example, every two hours). When the communication is executed, the RTC 284 transmits the current time to the control unit 172. The control unit 172 stores the received current time in the nonvolatile memory 274. When the hot water supply system 2 shifts to the power outage state, communication between the control unit 172 and the RTC 284 is not executed. Therefore, control unit 172 sets the last current time stored in nonvolatile memory 274 as power outage start time TS.

  Next, a process executed by control unit 172 when electric power supply from commercial power supply 108 to hot water supply system 2 is started will be described using FIG. 9. The processing in steps S2 to S8, step S12, step S14, step S18, step S22, step S24, step S28, and step S32 is the same as in the first embodiment. Processing different from the first embodiment will be described.

  In S210, control unit 172 receives the current time from RTC 184 or remote controller 76 (specifically, Wi-Fi router 190). If the power outage time exceeds the time during which the capacitor 188 can supply power (for example, 96 hours), the time measurement of the RTC 284 stops during the power outage. Therefore, control unit 172 cannot receive the current time from RTC 284. In this case, control unit 172 performs the subsequent processing using the current time received from remote controller 76. The processing in step S226 is the same as the processing in step S210.

  Next, a high-temperature heating process when the hot water supply system 2 returns from the power failure state to the normal state will be described with reference to FIG.

  In S242, the control unit 172 determines whether the power outage time specified in S14 is equal to or longer than a predetermined time (for example, 96 hours) or whether the current time cannot be received from the RTC 284. If the power outage time is equal to or longer than a predetermined time (for example, 96 hours), fungi may have propagated in the water in the tank 30. Therefore, it is necessary to execute a high-temperature heating operation before hot water supply is executed. Therefore, when the power outage time is equal to or longer than the predetermined time, control unit 172 determines YES in step S242, and the process proceeds to step S44. If the control unit 172 cannot receive the current time from the RTC 284, it is considered that the power outage time exceeds the power supply available time of the capacitor 188. In this case, if the possible power supply time of the capacitor 188 is longer than the above-mentioned predetermined time (for example, 96 hours), the power outage time also exceeds the above-mentioned predetermined time, and it is necessary to execute the high-temperature heating operation. . Therefore, even when control unit 172 cannot receive the current time from RTC 284, control unit 172 determines YES in step S242, and the process proceeds to step S44. Subsequent processes in S44 and S46 are the same as in the first embodiment.

  As described above, in the present embodiment, the power failure start time TS is stored in the nonvolatile memory 274. In this embodiment, the control unit 172 can acquire the current time from the RTC 284 or the remote controller 76 (specifically, the Wi-Fi router 190). Therefore, for example, even when the power outage time cannot exceed the time during which power can be supplied from capacitor 188 and the current time cannot be received from RTC 284, control unit 172 sets the power outage time of hot water supply system 2 and the power outage period. Can be identified.

  Here, the correspondence between the description of the second embodiment and the description of the claims will be described. The nonvolatile memory 274 is an example of a “storage unit”.

  As mentioned above, although each Example was described in detail, these are only illustrations and do not limit a claim. The technology described in the claims includes various modifications and alterations of the specific examples illustrated above. The technical elements described in the present specification or the drawings exhibit 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 technology illustrated in the present specification or the drawings can simultaneously achieve a plurality of objects, and has technical utility by achieving one of the objects.

2: Hot water supply system 4: HP unit 6: Tank unit 8: Burner unit 9: Power supply unit 10: Compressor 12: Condenser 14: Expansion valve 16: Evaporator 18: Circulation pump 19: HP going path 20: Return thermistor 21: HP return path 22: Outgoing thermistor 23: HP outside air temperature thermistor 24: HP controller 30: Tank 31: Tank outgoing path 32: Mixing valve 33: Tank return path 34: Bypass control valve 36: Upper thermistor 37: Middle thermistor 38: lower thermistor 39: tank outside air temperature thermistor 40: water supply path 42: pressure reducing valve 44: water supply thermistor 46: tank water supply path 48: tank bypass path 50: check valve 52: check valve 54: water side water amount sensor 56: Tank outlet path 58: check valve 60: hot water side water sensor 6 : First hot water supply path 64: Mixed thermistor 66: Second hot water supply path 68: Hot water supply outlet thermistor 70: Check valve 72: Hot water supply bypass path 74: Tank controller 75: Nonvolatile memory 76: Remote controller 76a: Display section 76b: Operation section 80: burner 81: gas supply pipe 82: heat exchanger 84: bypass servo 85: burner outside air temperature thermistor 86: water quantity servo 88: hot water valve 90: burner outward path 91: water quantity sensor 92: burner return path 94: burner bypass path 96 : Burner hot water supply thermistor 98: Hot water path 100: Burner controller 108: Commercial power supply 172: Control unit 174: Non-volatile memory 182: Control board 184: RTC
186: RAM
188: Capacitor 190: Wi-Fi router 274: Non-volatile memory 284: RTC

Claims (5)

Thermal equipment,
A heat pump unit having a heat pump heat source for heating the heat medium,
A tank unit including a tank for storing a heat medium heated by a heat pump heat source,
A control device capable of communicating with the external device and acquiring the current time from the external device,
The control device is
A storage unit that stores a power failure start time at which the thermal equipment has failed,
A specifying unit that specifies the length of time the thermal device has been out of power, and the period from the start of the power failure to the end of the thermal device, and
And a control board.
The control board is
A clock section for measuring the time;
And an auxiliary power supply that supplies power to the timing unit during a power outage.
The identification unit acquires the current time from the external device or the clock unit as the power failure end time when the thermal device returns from the power failure, based on the acquired power failure end time and the power failure start time stored in the storage unit, Identify the length of time the thermal equipment has been out of power and the period from the start of the thermal equipment to the end of the power outage ,
The control device can execute a high-temperature heating operation of driving the heat pump heat source and heating the temperature of the heat medium in the tank to a temperature that can be sterilized,
The control device executes the high-temperature heating operation when the control device determines that the length of time during which the heat device has lost power is longer than a predetermined time . The control device sets a scheduled start time of the heating operation according to the use result of the heat medium in the past predetermined period within the predetermined past period, and executes the heating operation when the set scheduled start time is reached. It is composed of
When the time from when the power supply of the heating device is to be executed is included in the period from the power failure start time to the power failure end time of the thermal device, the control device controls the period from the power failure start time to the power failure end time of the thermal device. The thermal device according to claim 1, wherein predetermined information is used as the actual use result of the heat medium in the heat device. Thermal equipment,
A heat pump unit having a heat pump heat source for heating the heat medium,
A tank unit including a tank for storing a heat medium heated by a heat pump heat source,
A control device capable of communicating with the external device and acquiring the current time from the external device,
The control device is
A storage unit that stores a power failure start time at which the thermal equipment has failed,
A specifying unit that specifies the length of time the thermal device has been out of power, and the period from the start of the power failure to the end of the thermal device, and
And a control board.
The control board is
A clock section for measuring the time;
And an auxiliary power supply that supplies power to the timing unit during a power outage.
The identification unit acquires the current time from the external device or the clock unit as the power failure end time when the thermal device returns from the power failure, based on the acquired power failure end time and the power failure start time stored in the storage unit, Identify the length of time the thermal equipment has been out of power and the period from the start of the thermal equipment to the end of the power outage ,
The control device sets a scheduled start time of the heating operation according to the use result of the heat medium in the past predetermined period within the predetermined past period, and executes the heating operation when the set scheduled start time is reached. It is composed of
When the time from when the power supply of the heating device is to be executed is included in the period from the power failure start time to the power failure end time of the thermal device, the control device controls the period from the power failure start time to the power failure end time of the thermal device. Thermal equipment that uses predetermined information as the actual use of the heat medium in it. The storage unit is a non-volatile memory, acquires a current time from an external device or a clock unit at predetermined intervals, and stores the last stored time before the power failure of the thermal device among the acquired current times as a power failure start time. And
The identification unit acquires the current time from the external device or the clock unit as the power failure end time when the thermal device returns from the power failure, based on the acquired power failure end time and the power failure start time stored in the storage unit, The thermal device according to any one of claims 1 to 3, wherein the length of time during which the thermal device has lost power and the period from the start of power failure to the end of power failure of the thermal device are specified. Thermal equipment,
A heat pump unit having a heat pump heat source for heating the heat medium,
A tank unit including a tank for storing a heat medium heated by a heat pump heat source,
A control device capable of communicating with the external device and acquiring the current time from the external device,
The control device is
A storage unit that stores a power failure start time at which the thermal equipment has failed,
A specifying unit that specifies a length of time during which the thermal device has lost power and a period from the start of the thermal device to the end of the power failure, and
And a control board.
The control board is
A clock section for measuring the time;
An auxiliary power supply that supplies power to the timing unit during a power outage.
The storage unit is a non-volatile memory, and obtains the current time from an external device or a clock unit at predetermined intervals, and stores the last stored time before the power failure of the thermal device among the obtained current times as a power failure start time. And
The identification unit acquires the current time from the external device or the clock unit as the power failure end time when the thermal device returns from the power failure, based on the acquired power failure end time and the power failure start time stored in the storage unit, A thermal device that specifies the length of time the thermal device has been out of power and the period from the start of the power failure to the end of the power failure.

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