WO2021191949A1 - Dispositif de source de chaleur pour pompe à chaleur et chauffe-eau à pompe à chaleur - Google Patents

Dispositif de source de chaleur pour pompe à chaleur et chauffe-eau à pompe à chaleur Download PDF

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Publication number
WO2021191949A1
WO2021191949A1 PCT/JP2020/012644 JP2020012644W WO2021191949A1 WO 2021191949 A1 WO2021191949 A1 WO 2021191949A1 JP 2020012644 W JP2020012644 W JP 2020012644W WO 2021191949 A1 WO2021191949 A1 WO 2021191949A1
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Prior art keywords
temperature
compressor
water
hot water
heat
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Application number
PCT/JP2020/012644
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English (en)
Japanese (ja)
Inventor
隆宏 岡本
尚希 今任
信介 黒田
Original Assignee
東芝キヤリア株式会社
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Filing date
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Application filed by 東芝キヤリア株式会社 filed Critical 東芝キヤリア株式会社
Priority to AU2020438844A priority Critical patent/AU2020438844B2/en
Priority to EP20927543.7A priority patent/EP4130599A4/fr
Priority to PCT/JP2020/012644 priority patent/WO2021191949A1/fr
Publication of WO2021191949A1 publication Critical patent/WO2021191949A1/fr

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H4/00—Fluid heaters characterised by the use of heat pumps
    • F24H4/02—Water heaters
    • F24H4/04—Storage heaters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D11/00—Central heating systems using heat accumulated in storage masses
    • F24D11/02—Central heating systems using heat accumulated in storage masses using heat pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D11/00—Central heating systems using heat accumulated in storage masses
    • F24D11/02—Central heating systems using heat accumulated in storage masses using heat pumps
    • F24D11/0214—Central heating systems using heat accumulated in storage masses using heat pumps water heating system
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D17/00—Domestic hot-water supply systems
    • F24D17/02—Domestic hot-water supply systems using heat pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D19/00—Details
    • F24D19/10—Arrangement or mounting of control or safety devices
    • F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
    • F24D19/1009—Arrangement or mounting of control or safety devices for water heating systems for central heating
    • F24D19/1039—Arrangement or mounting of control or safety devices for water heating systems for central heating the system uses a heat pump
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D19/00—Details
    • F24D19/10—Arrangement or mounting of control or safety devices
    • F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
    • F24D19/1051—Arrangement or mounting of control or safety devices for water heating systems for domestic hot water
    • F24D19/1054—Arrangement or mounting of control or safety devices for water heating systems for domestic hot water the system uses a heat pump
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D19/00—Details
    • F24D19/10—Arrangement or mounting of control or safety devices
    • F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
    • F24D19/1066—Arrangement or mounting of control or safety devices for water heating systems for the combination of central heating and domestic hot water
    • F24D19/1069—Arrangement or mounting of control or safety devices for water heating systems for the combination of central heating and domestic hot water regulation in function of the temperature of the domestic hot water
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D19/00—Details
    • F24D19/10—Arrangement or mounting of control or safety devices
    • F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
    • F24D19/1066—Arrangement or mounting of control or safety devices for water heating systems for the combination of central heating and domestic hot water
    • F24D19/1072—Arrangement or mounting of control or safety devices for water heating systems for the combination of central heating and domestic hot water the system uses a heat pump
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D3/00—Hot-water central heating systems
    • F24D3/08—Hot-water central heating systems in combination with systems for domestic hot-water supply
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D3/00—Hot-water central heating systems
    • F24D3/18—Hot-water central heating systems using heat pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/20—Control of fluid heaters characterised by control inputs
    • F24H15/212—Temperature of the water
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/20—Control of fluid heaters characterised by control inputs
    • F24H15/212—Temperature of the water
    • F24H15/219—Temperature of the water after heating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/20—Control of fluid heaters characterised by control inputs
    • F24H15/212—Temperature of the water
    • F24H15/223—Temperature of the water in the water storage tank
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/30—Control of fluid heaters characterised by control outputs; characterised by the components to be controlled
    • F24H15/375—Control of heat pumps
    • F24H15/38—Control of compressors of heat pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B13/00—Compression machines, plants or systems, with reversible cycle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B49/00—Arrangement or mounting of control or safety devices
    • F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/003—Indoor unit with water as a heat sink or heat source
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2339/00—Details of evaporators; Details of condensers
    • F25B2339/04—Details of condensers
    • F25B2339/047—Water-cooled condensers

Definitions

  • An embodiment of the present invention relates to a heat pump type heat source device that obtains hot water used for heating and hot water supply by operating a heat pump type refrigeration cycle, and a heat pump type hot water supply device that generates hot water used for hot water supply.
  • a heat pump type heat source device that draws heat from the outside air by operating a heat pump type refrigeration cycle and sends the hot water warmed by the pumped heat to a heat radiator for heating or a tank for hot water supply.
  • the heat pump type heat source device includes a compressor, a water heat exchanger, a decompressor, an evaporator, and a control unit as main components, and heats water flowing through the water heat exchanger with the discharge refrigerant of the compressor.
  • a heat pump type hot water supply device that dissipates water heated by a refrigerant using such a heat pump type heat source device in a hot water supply tank and turns the stored water into hot water.
  • the temperature of the hot water in the tank (tank water temperature) is adjusted to the temperature (hot water supply temperature) set from the operation display of the control unit.
  • the compressor In order to suppress the power consumption at that time as much as possible, it is desirable to suppress the compressor from continuing to operate at the maximum rotation speed, for example, when the heating capacity of the heat pump type heat source device is sufficient to set the tank water temperature as the hot water supply temperature. Is done.
  • An object of the embodiment of the present invention is to provide a heat pump type heat source device and a heat pump type hot water supply device that can save energy by appropriately controlling the rotation speed of the compressor.
  • the heat pump type hot water supply device controls a compressor, a water heat exchanger, a tank, a water radiator, a pump, a heater, a first temperature sensor, and a second temperature sensor. It has a part.
  • the compressor is a rotary compressor that discharges a compressed gas refrigerant.
  • the water heat exchanger heats the water flowing through the internal flow path with the gas refrigerant.
  • the tank stores water.
  • the water radiator is provided in the tank and dissipates the heat of the water heated by the water heat exchanger into the tank.
  • the pump circulates water between the water radiator and the water heat exchanger.
  • the heater is provided between the water radiator and the water heat exchanger, and heats the water flowing between them.
  • the first temperature sensor detects the first temperature of water that dissipates heat to the water stored in the tank and flows into the flow path of the water heat exchanger.
  • the second temperature sensor detects the second temperature of the water stored in the tank.
  • the control unit controls the operation or stop of the compressor based on the first temperature and the second temperature, and during the operation of the compressor, the compressor of the compressor is operated based on the first temperature. Control the number of revolutions.
  • the heat pump type heat source device includes a compressor, a water heat exchanger, a pump, a first temperature sensor, and a control unit.
  • the compressor is a rotary compressor that discharges a compressed gas refrigerant.
  • the water heat exchanger heats the water flowing through the internal flow path with the gas refrigerant.
  • the pump circulates water between the water heat exchanger and the heat exchanger on the user side.
  • the first temperature sensor detects the first temperature of water flowing into the flow path of the water heat exchanger.
  • the control unit controls the stop of the compressor based on the first temperature, and when the first temperature is higher than a predetermined set value during the operation of the compressor, the compressor of the compressor is operated.
  • the number of revolutions of the compressor is set to the number of revolutions at which high efficiency can be obtained. Control to a lower speed.
  • FIG. 1 is a block diagram schematically showing a configuration of a heat pump type hot water supply device HP including a heat pump type heat source device according to the present embodiment.
  • the heat pump type hot water supply device HP is a device that obtains hot water by operating a heat pump type refrigeration cycle.
  • the heat pump type hot water supply device HP includes an outdoor unit A, a water heat exchange unit B, a load unit C, and a control unit D.
  • the heat pump heat source device is a device having a configuration excluding the hot water supply tank 13, the heat dissipation coil (water radiator) 14, the heater 15, and the tank water temperature sensor 34 among the components of the heat pump type hot water supply device HP described later.
  • the heat pump heat source device is composed of an outdoor unit A and a water heat exchange unit B.
  • the outdoor unit A and the water heat exchange unit B are connected by piping to circulate the refrigerant, and the water heat exchange unit B and the load unit C are connected by piping to water (hot water). ) Circulates.
  • the flow of these refrigerants and water (hot water) is controlled by the control unit D.
  • One end of the refrigerant flow path of the water heat exchanger 3 is connected to the discharge port of the compressor 1 via a four-way valve 2, and the other end of the refrigerant flow path is air through an expansion valve 4 which is a decompressor.
  • a pipe is connected to one end of the heat exchangers 5a and 5b.
  • the other ends of the air heat exchangers 5a and 5b are pipe-connected to the suction port of the compressor 1 via the four-way valve 2 and the accumulator 6. These pipe connections form a heat pump refrigeration cycle.
  • Outdoor fans 7a and 7b are arranged in the vicinity of the air heat exchangers 5a and 5b.
  • the outdoor fans 7a and 7b suck in the outside air and pass the sucked air through the air heat exchangers 5a and 5b.
  • the outside air temperature sensor 31 is arranged on the upstream side of the suction air passage formed by the outdoor fans 7a and 7b. The outside air temperature sensor 31 detects the temperature of the outside air sucked by the outdoor fans 7a and 7b.
  • the compressed gas refrigerant discharged from the compressor 1 passes through the four-way valve 2 and the refrigerant flow path of the water heat exchanger 3 during heating and when the hot water in the hot water supply tank 13 described later is heated. Flow.
  • the gas refrigerant is deprived of heat by the water flowing through the water flow path of the water heat exchanger 3 and condenses.
  • the liquid refrigerant flowing out of the refrigerant flow path of the water heat exchanger 3 is decompressed by the expansion valve 4 and flows through the air heat exchangers 5a and 5b.
  • the liquid refrigerant flowing through the air heat exchangers 5a and 5b draws heat from the outside air and evaporates.
  • the gas refrigerant flowing out of the air heat exchangers 5a and 5b is sucked into the compressor 1 through the four-way valve 2 and the accumulator 6.
  • the water heat exchanger 3 functions as a condenser
  • the air heat exchangers 5a and 5b function as an evaporator.
  • the flow path is switched by the four-way valve 2 and the compressed high temperature discharged from the compressor 1 is used.
  • the gas refrigerant flows from the four-way valve 2 through the refrigerant flow paths of the air heat exchangers 5a and 5b.
  • the air heat exchangers 5a and 5b are defrosted by the flow of this high-temperature gas refrigerant.
  • the air heat exchangers 5a and 5b function as condensers
  • the water heat exchanger 3 functions as an evaporator.
  • the outlet of the water flow path of the water heat exchanger 3 is pipe-connected to the suction port of the circulation pump 11, and the discharge port of the circulation pump 11 is pipe-connected to the water inlet 12a of the three-way valve 12.
  • the water outlet 12b of the three-way valve 12 is connected to the water inlet of the heat dissipation coil (water radiator) 14 housed in the hot water supply tank (hereinafter referred to as the hot water supply tank) 13 by piping, and the water outlet of the heat dissipation coil 14 is connected to the water inlet. , It is connected to the inlet of the water flow path of the water heat exchanger 3 by piping.
  • the water outlets 12c of the three-way valve 12 are connected to the water inlets of a plurality of heat exchangers 21 and 22,23 for heating, so-called fan coil units, respectively, and the water outlets of the radiators 21 and 22 and 23 are water.
  • a pipe is connected to the inlet of the water flow path of the heat exchanger 3.
  • the circulation pump 11 sends the hot water flowing out of the water heat exchanger 3 to the hot water supply tank 13 or the radiators 21 and 22, 23, and the water returned from the hot water supply tank 13 or the radiators 21 and 22 and 23 is the water heat exchanger. Inflow to 3.
  • the three-way valve 12 has a water inlet 12a and two water outlets 12b and 12c, and is either a first flow path from the water inlet 12a to the water outlet 12b or a second flow path from the water inlet 12a to the water outlet 12c. It is a solenoid valve that switches the internal flow path to one side.
  • a hot water circulation cycle is formed by connecting the pipes between the water heat exchanger 3, the hot water supply tank 13, and the radiators 21, 22, and 23.
  • the water inlet 12a of the three-way valve 12 is connected to the water outlet 12c by the control unit D described later, and the hot water sent out from the circulation pump 11 is supplied to the radiators 21, 22, 23.
  • the water inlet 12a of the three-way valve 12 is connected to the water outlet 12b by the control unit D, and the hot water sent out from the circulation pump 11 dissipates heat in the hot water supply tank 13. It is supplied to the coil 14.
  • the inlet water temperature sensor 32 is arranged in the water heat exchange unit B.
  • the inlet water temperature sensor 32 detects the temperature of the water (first temperature, hereinafter referred to as the inlet water temperature TWI) that flows out of the hot water supply tank 13 and the radiators 21, 22, and 23 and flows into the water flow path of the water heat exchanger 3. do.
  • a hot water temperature sensor (hereinafter referred to as an outlet water temperature sensor) 33 is attached to the pipe from the water heat exchanger 3 to the hot water supply tank 13 or the radiators 21, 22, 23.
  • the outlet water temperature sensor 33 is arranged in the pipe between the water heat exchanger 3 and the circulation pump 11.
  • the outlet water temperature sensor 33 detects the temperature of hot water (hereinafter, referred to as outlet water temperature TWO) that flows out of the water heat exchanger 3 and is sent to the hot water supply tank 13 or the radiators 21, 22, and 23.
  • the hot water supply tank 13 has a heat radiating coil 14 and a heater (electric heater) 15 built-in, and heats the water flowing in from the water inlet pipe 16 by the heat radiating from the heat radiating coil 14 and the heat generated by the heater 15, and stores and stores the water as hot water for hot water supply.
  • the hot water is guided to the discharge pipe 17.
  • the heat radiating coil 14 causes the hot water flowing out of the water heat exchanger 3 to flow from the water inlet to the water outlet, and radiates heat to the water (hot water) stored in the hot water supply tank 13 during that time.
  • the faucet 17a at the tip of the water discharge pipe 17 is opened, the hot water in the hot water supply tank 13 flows out through the water discharge pipe 17.
  • a temperature sensor (second temperature sensor, hereinafter referred to as a tank water temperature sensor) 34 is arranged in the hot water supply tank 13.
  • the tank water temperature sensor 34 detects the temperature of the water stored in the hot water supply tank 13 (second temperature, hereinafter referred to as tank water temperature TTW).
  • the compressor 1, the four-way valve 2, the expansion valve 4, the air heat exchangers 5a and 5b, the accumulator 6, the outdoor fans 7a and 7b, and the outside air temperature sensor 31 are included in the components of the outdoor unit A.
  • the water heat exchanger 3, the circulation pump 11, the inlet water temperature sensor 32, and the outlet water temperature sensor 33 are included in the components of the water heat exchange unit B.
  • the hot water supply tank 13, the heat dissipation coil 14, the heater 15, the radiators 21, 22, 23, and the three-way valve 12 are included in the components of the load unit C.
  • which units A, B, and C include each of these components is not limited to the above.
  • the control unit D controls the operations of the outdoor unit A, the water heat exchange unit B, and the load unit C, circulates the refrigerant between the outdoor unit A and the water heat exchange unit B, and causes the water heat exchange unit B and the load unit to circulate. Warm water is circulated with C.
  • the control unit D includes a controller 40 and an operation display 41. The control unit D is installed indoors in the same manner as the load unit C.
  • the controller 40 is electrically connected to the outdoor unit A, the water heat exchange unit B, the load unit C, and the operation display 41, respectively.
  • the controller 40 includes a CPU, a memory, a storage device (nonvolatile memory), an input / output circuit, a timer, and the like, and executes a predetermined arithmetic process. For example, the controller 40 reads various data by the input / output circuit, performs arithmetic processing by the CPU using the program read from the storage device into the memory, and based on the processing result, the outdoor unit A, the water heat exchange unit B, and the load unit C. Controls the operation of. In the heat pump type hot water supply device HP, the controller 40 corresponds to a control unit that controls the rotation speed of the compressor 1.
  • the operation display 41 is a remote control type interface unit in which the user sets operating conditions for the heat pump type hot water supply device HP.
  • the operation display 41 sets, for example, an operation button for designating the start and stop of operation of the heat pump type hot water supply device HP, an operation button for the set temperature of hot water supply (hot water supply temperature) and the indoor set temperature during heating, and the operation mode of the circulation pump 11. It has an operation button to be designated, a display unit for notifying the operating state of the heat pump type hot water supply device HP, and the like.
  • the operation indicator 41 is installed on the user side such as each supply destination of hot water or the air-conditioned space, but the installation location is not limited to these.
  • the operation display 41 and the controller 40 may be housed in an integral housing, or may be housed in different housings and installed at different positions.
  • the operation indicator 41 and the controller 40 are generally installed near the hot water supply tank 13.
  • FIG. 2 shows the control flow of the controller 40 during the heating operation.
  • the heating operation control of the heat pump type hot water supply device HP at the time of heating is also executed by the controller 40, but since it is not the subject of the present embodiment, the description thereof will be omitted.
  • the heating operation (the operation of boiling the water (hot water) stored in the hot water supply tank 13) is started by, for example, the user operating the operation button of the operation display 41. Normally, the user operates the operation button at the time of installation to start the operation, and then does not stop the operation except when the user is away for a long period of time.
  • thermo-ON condition is a condition for determining whether or not it is necessary to boil the water (hot water) stored in the hot water supply tank 13 when the start instruction of the heating operation is given. Whether or not to start the circulation pump 11 and the compressor 1 is determined according to the success or failure of the thermo-ON condition. Specifically, whether or not the tank water temperature TTW of the hot water supply tank 13 is equal to or lower than the thermo-ON water temperature is determined as a thermo-ON condition.
  • the thermo-ON water temperature is a temperature at which hot water stored in the hot-water supply tank 13 needs to be boiled. It is a value obtained by subtracting a predetermined value (20 ° C. as an example) from the temperature). The value of the thermo-ON water temperature is held in the storage device of the controller 40, for example, and is read into the memory when the thermo-ON condition is determined and used as a parameter.
  • the controller 40 acquires the tank water temperature TTW from the tank water temperature sensor 34 and compares it with the thermo-ON water temperature. In the present embodiment, as an example, when the tank water temperature is equal to or lower than the thermo-ON water temperature, the controller 40 determines that the thermo-ON condition is satisfied as it is necessary to boil the hot water stored in the hot water supply tank 13. On the other hand, when the tank water temperature TTW exceeds the thermo-ON water temperature, the controller 40 determines that the thermo-ON condition is not satisfied, assuming that it is not necessary to boil the hot water stored in the hot water supply tank 13.
  • the controller 40 repeats the determination of the thermo-ON condition until the thermo-ON condition is satisfied. At that time, the controller 40 may execute a predetermined failure process.
  • the failure processing includes, for example, a standby process of waiting for the determination of the thermo-ON condition for a predetermined time, a timeout process or a retry process of ending the heating operation when the thermo-ON condition is not satisfied even if the determination is repeated for a predetermined time or a predetermined number of times. Processing that combines these.
  • the controller 40 activates the circulation pump 11 (S102).
  • the circulation pump 11 S102
  • hot water starts to circulate between the water heat exchange unit B and the hot water supply tank 13 (specifically, the heat dissipation coil 14).
  • the hot water that circulates between the water heat exchange unit B and the hot water supply tank 13 in this way is referred to as circulating water.
  • the controller 40 switches the internal flow path of the three-way valve 12 so as to be the first flow path from the water inlet 12a to the water outlet 12b.
  • the controller 40 activates the compressor 1 (S103).
  • the controller 40 controls the four-way valve 2, and the refrigerant discharged from the compressor 1 passes through the water heat exchanger 3, the expansion valve 4, the air heat exchangers 5a and 5b, the four-way valve 2, and the accumulator 6 in this order.
  • the hot water (circulating water) circulating between the water heat exchange unit B and the hot water supply tank 13 is heated by the gas refrigerant discharged from the compressor 1 while flowing through the water heat exchanger 3, and the water temperature rises. do.
  • the hot water is radiated in the hot water supply tank 13 while flowing through the heat radiating coil 14.
  • the tank water temperature (TTW) of the hot water supply tank 13 rises.
  • the thermo-off condition is a condition for determining whether or not it is no longer necessary to boil the hot water stored in the hot water supply tank 13. Specifically, the necessity of continuing boiling while the compressor 1 is operating is determined as a thermo-off condition. Whether or not to stop the circulation pump 11 and the compressor 1 is determined according to the success or failure of the thermo-off condition. In the present embodiment, when either the first thermo-off condition or the second thermo-off condition is satisfied, the thermo-off condition is satisfied and the compressor 1 is stopped, and the first thermo-off condition and the second thermo-off condition are satisfied. If none of the thermo-off conditions is satisfied, the thermo-off conditions are not satisfied, and the operation of the circulation pump 11 and the compressor 1 is continued.
  • thermo-OFF water temperature is a temperature that does not require further heating (boiling) of the hot water stored in the hot water supply tank 13, and is, for example, a hot water supply temperature set by the user by operating the operation button of the operation display 41. ..
  • the value of the thermo-off water temperature is stored in the memory of the controller 40, for example, and is used as a parameter when determining the first thermo-off condition.
  • the controller 40 acquires the tank water temperature TTW from the tank water temperature sensor 34 and compares it with the thermo-off water temperature.
  • the controller 40 considers that it is no longer necessary to boil the hot water stored in the hot water supply tank 13, and the first thermo-off It is determined that the condition is satisfied.
  • the controller 40 determines that the first thermo-off condition is not satisfied, assuming that the hot water stored in the hot water supply tank 13 needs to be further boiled.
  • the protection temperature is set to protect the compressor 1 by avoiding the temperature of the gas refrigerant sucked into the compressor 1 from becoming excessively high, and the inflow to the water heat exchanger 3 is allowed. This is the upper limit temperature of hot water (circulating water).
  • the protection temperature is the upper limit temperature of the circulating water that exchanges heat with the high-temperature gas refrigerant, and is set in advance according to, for example, the performance of the compressor 1.
  • the value of the protection temperature is held in the storage device of the controller 40, for example, and is read into the memory at the time of determining the second thermo-off condition and used as a parameter.
  • the controller 40 acquires the inlet water temperature TWI from the inlet water temperature sensor 32 and compares it with the protection temperature (for example, 54 ° C.). In the present embodiment, as an example, when the inlet water temperature TWI is equal to or higher than the protection temperature, the controller 40 determines that the second thermo-off condition is satisfied. In this case, it is said that the second thermo-off condition is satisfied, assuming that it is necessary to stop the compressor 1 so as not to exceed the allowable operating range. As a result, the compressor 1 is protected. On the other hand, when the inlet water temperature TWI is lower than the protection temperature, the controller 40 determines that the second thermo-off condition is not satisfied.
  • the protection temperature for example, 54 ° C.
  • thermo-off condition is satisfied, assuming that the hot water stored in the hot water supply tank 13 is within the permissible operation range of the compressor 1 even if the hot water is further boiled and the operation of the compressor 1 can be continued. It is said not to.
  • thermo-off condition When the thermo-off condition is satisfied by these first thermo-off conditions and the second thermo-off conditions, the controller 40 stops the compressor 1 (S105) and stops the circulation pump 11 (S106). As a result, the heating operation of the heat pump type hot water supply device HP is completed.
  • the second thermo-off condition is generally that the inlet water temperature TWI is about 54 ° C.
  • the set temperature of the tank water temperature TTW can usually be set in the range of 45 ° C. to 70 ° C. in 1 ° C. increments.
  • the second thermo-off condition is satisfied, but the first thermo-off condition may not be satisfied.
  • the heater 15 is started. The operation of the heater 15 is continued until the first thermo-off condition is satisfied, and the operation reaches the hot water supply temperature targeted by the tank water temperature TTW.
  • the temperature difference condition is a condition for determining whether to increase, maintain, or decrease the rotation speed of the compressor 1. Depending on the success or failure of the temperature difference condition, it is determined whether the rotation speed of the compressor 1 is increased, maintained, or decreased.
  • the first temperature difference condition and the second temperature difference condition are determined as the temperature difference conditions, respectively. When the first temperature difference condition is satisfied, the rotation speed of the compressor 1 is increased, and when the second temperature difference condition is satisfied, the rotation speed of the compressor 1 is decreased. When none of these temperature difference conditions are satisfied, the rotation speed of the compressor 1 is maintained.
  • FIG. 3 is a diagram showing the relationship between the temperature difference between the inlet water temperature TWI and the tank water temperature TTW (hereinafter referred to as the water temperature difference) and the increase, maintenance, and decrease in the rotation speed of the compressor 1.
  • the controller 40 shifts the rotation speed of the compressor 1 between the HzUP_Zone and the HzDOWN_Zone sandwiching the HzKEEP_Zone according to the water temperature difference.
  • HzUP_Zone is the range of water temperature difference that increases the number of revolutions
  • HzDOWN_Zone is the range of water temperature difference that decreases the number of revolutions
  • HzKEEP_Zone is the range of the water temperature difference that maintains the number of revolutions.
  • the controller 40 first determines the first temperature difference condition as an example (S107).
  • the first temperature difference condition is a condition for determining whether or not the water temperature difference is equal to or less than the first threshold value ( ⁇ ). Whether or not to increase the rotation speed of the compressor 1 is determined according to the success or failure of the first temperature difference condition.
  • the first threshold value is a value of the water temperature difference that requires an increase in the rotation speed of the compressor 1 in order to further boil the hot water stored in the hot water supply tank 13, and is preset according to, for example, the performance of the compressor 1. ing.
  • the first threshold value is held in the storage device of the controller 40, for example, and is read into the memory at the time of determining the first temperature difference condition and used as a parameter.
  • the controller 40 acquires the inlet water temperature TWI from the inlet water temperature sensor 32, acquires the tank water temperature TTW from the tank water temperature sensor 34, calculates the water temperature difference, and calculates the first value. Compare with the threshold of. When the water temperature difference is equal to or less than the first threshold value, the controller 40 determines that the first temperature difference condition is satisfied. On the other hand, when the water temperature difference exceeds the first threshold value, the controller 40 determines that the first temperature difference condition is not satisfied.
  • the controller 40 increases the rotation speed of the compressor 1 in order to further boil the hot water stored in the hot water supply tank 13 (S108).
  • the water temperature difference is in HzUP_Zone, and it is said that it is necessary to increase the rotation speed of the compressor 1.
  • the rotation speed of the compressor 1 is increased, the temperature of the circulating water rises, and the amount of heat radiated in the hot water supply tank 13 increases. As a result, the hot water stored in the hot water supply tank 13 is boiled, and the tank water temperature TTW rises.
  • the amount of increase in the number of rotations is not particularly limited and can be set arbitrarily.
  • the second temperature difference condition is a condition for determining whether or not the water temperature difference exceeds the second threshold value ( ⁇ ). Whether or not to reduce the rotation speed of the compressor 1 is determined according to the success or failure of the second temperature difference condition.
  • the second threshold value is the value of the water temperature difference that requires a decrease in the rotation speed of the compressor 1 in order to suppress the boiling of the hot water stored in the hot water supply tank 13, and is, for example, in advance according to the performance of the compressor 1 or the like. It is set.
  • the second threshold value is a value larger than the first threshold value.
  • the second threshold value is held in the storage device of the controller 40, for example, and is read into the memory at the time of determining the second temperature difference condition and used as a parameter.
  • the controller 40 compares the calculated value of the water temperature difference with the second threshold value. When the water temperature difference exceeds the second threshold value, the controller 40 determines that the second temperature difference condition is satisfied. On the other hand, when the water temperature difference is equal to or less than the second threshold value, the controller 40 determines that the second temperature difference condition is not satisfied.
  • the controller 40 reduces the rotation speed of the compressor 1 in order to suppress the boiling of the hot water stored in the hot water supply tank 13 (S110).
  • the water temperature difference is in HzDOWN_Zone, and it is said that it is necessary to reduce the rotation speed of the compressor 1.
  • the rotation speed of the compressor 1 is reduced, the temperature rise of the circulating water is suppressed, and the amount of heat radiated in the hot water supply tank 13 is reduced. As a result, boiling of hot water stored in the hot water supply tank 13 is suppressed, and the tank water temperature TTW is lowered.
  • the amount of decrease in the number of rotations is not particularly limited and can be set arbitrarily.
  • the increase width and the decrease width of the rotation speed may be the same or different. Further, these may have a fixed width (fixed value) regardless of, for example, a water temperature difference, or may have a fluctuation width (variation value) according to the water temperature difference.
  • the controller 40 maintains the rotation speed of the compressor 1 in order to maintain the tank water temperature TTW (S111).
  • the water temperature difference is in HzKEEP_Zone, and it is said that it is necessary to maintain the rotation speed of the compressor 1.
  • the temperature of the circulating water in other words, the amount of heat dissipated in the hot water supply tank 13
  • the temperature of the circulating water in other words, the amount of heat dissipated in the hot water supply tank 13
  • the boiling of the hot water stored in the hot water supply tank 13 is continued so that the tank water temperature TTW approaches the thermo-off water temperature.
  • the controller 40 again determines the thermo-off condition (S104). That is, the controller 40 appropriately repeats the determination of the first temperature difference condition and the second temperature difference condition until the thermo-OFF condition is satisfied. Therefore, depending on the success or failure of these, the increase, decrease, and maintenance of the rotation speed of the compressor 1 are appropriately repeated.
  • the tank water temperature TTW gradually approaches the thermo-off water temperature.
  • thermo-off condition first thermo-off condition
  • the compressor 1 and the circulation pump 11 are stopped, and the heating operation of the heat pump type hot water supply device HP is performed. finish.
  • the number of revolutions of the compressor 1 is appropriately increased based on the water temperature difference (the temperature difference between the inlet water temperature TWI and the tank water temperature TTW). , Can be reduced and maintained.
  • the compressor 1 can be operated while keeping the water temperature difference within a certain temperature range. For example, in a state where the water temperature difference is not constant and becomes large, the amount of heating of the refrigerant to the circulating water is larger than the amount of heat radiated from the circulating water in the hot water supply tank 13, and the amount of heat supplied is excessive.
  • the rotation speed of the compressor 1 can be reduced to suppress the amount of heat supplied. That is, by changing the rotation speed of the compressor 1 according to the difference in water temperature, the rotation speed can be optimized and the power consumption can be reduced.
  • the rotation speed of the compressor 1 has been increased to the maximum rotation speed set so that the outlet water temperature TWO becomes a predetermined target temperature, for example, according to the outlet water temperature TWO.
  • the outlet water temperature TWO does not directly reflect the amount of heat radiated from the circulating water in the hot water supply tank 13, and when the rotation speed of the compressor 1 is increased to the maximum rotation speed, unnecessary rotation speed control tends to occur. ..
  • the water temperature difference is a value that directly reflects the amount of heat released from the circulating water.
  • the rotation speed of the compressor 1 when controlling according to the water temperature difference, the variation accuracy of the rotation speed of the compressor 1 for controlling the tank water temperature TTW is improved. Can be done. That is, by controlling the rotation speed of the compressor 1 so that the water temperature difference becomes substantially constant, it is possible to suppress an unnecessary increase in the rotation speed. Therefore, the compressor 1 can be operated while minimizing the fluctuation of the rotation speed, and the power consumption can be reduced.
  • the compressor 1 is stopped in order to protect it, and the heater 15 is started instead to generate heat.
  • a heater 15 can be prevented from being started or delayed, and the operation of the compressor 1 can be continued. Therefore, the operating time of the heater 15 can be shortened, and the power consumption can be reduced from this viewpoint as well.
  • the tank water temperature TTW when the tank water temperature TTW is low, the temperature of the circulating water is low, and the pressure of the gas refrigerant flowing through the refrigerant flow path of the water heat exchanger 3 is also low. Therefore, even if the rotation speed of the compressor 1 is increased, the heater 15 is not started immediately. Limiting the rotation speed of the compressor 1 in this state tends to result in inefficient operation due to its performance characteristics. Further, when the tank water temperature TTW is low and the compressor 1 is operated at a low rotation speed as described above, the operation is performed at a low compression ratio, which tends to cause deterioration of the reliability and noise of the compressor 1.
  • FIG. 4 shows the control flow of the controller 40 during the heating operation in the present embodiment.
  • the control of the controller 40 during the heating operation in the present embodiment will be described according to the control flow shown in FIG.
  • the control flow of the heating operation of this embodiment adds or changes a part of the control flow (FIG. 2) of the first embodiment to the control peculiar to the second embodiment. Therefore, the control equivalent to the first embodiment described above will be assigned the same step number and the description thereof will be omitted, and the control specific to the second embodiment will be described in detail.
  • the controller 40 determines the thermo-ON condition (S101), and when the thermo-ON condition is satisfied, activates the circulation pump 11 (S102) and activates the compressor 1. (S103). At that time, the controller 40 repeats the determination of the thermo-ON condition until the thermo-ON condition is satisfied.
  • the controller 40 determines the inlet water temperature condition.
  • the first inlet water temperature condition is a condition for determining whether or not the inlet water temperature TWI is lower than the first set value. Whether or not to stop the compressor 1 and start the heater 15 is determined according to the success or failure of the first inlet water temperature condition.
  • the second inlet water temperature condition is a condition for determining whether or not the inlet water temperature TWI is equal to or less than the second set value.
  • the number of revolutions of the compressor 1 corresponding to either a high-efficiency frequency (hereinafter referred to as a high-efficiency frequency F1) or a low-capacity frequency (hereinafter referred to as a low-capacity frequency Fm). It is decided whether to drive with.
  • FIG. 5 is a diagram showing the relationship between the inlet water temperature TWI and the operation control (frequency and stop) of the compressor 1.
  • the region above the first set value is the range of the inlet water temperature TWI for stopping the compressor 1 to protect the compressor 1, and is set to a value lower than the first set value.
  • the region below the second set value is the range of the inlet water temperature TWI in which the compressor 1 is operated at the high efficiency frequency F1.
  • the region sandwiched between these two values is the range of the inlet water temperature TWI in which the compressor 1 is operated at the low capacity frequency Fm.
  • the value of the high efficiency frequency F1 and the value of the low capacity frequency Fm are set according to, for example, the performance of the compressor 1.
  • FIG. 6 shows an example of the performance characteristics of the refrigeration cycle based on the relationship between the frequency [Hz], that is, the compressor rotation speed and the coefficient of performance [COP].
  • the value of the high efficiency frequency F1 is set to about 45 Hz and the value of the low capacity frequency Fm is set to about 30 Hz as an example.
  • the value of the high efficiency frequency F1 is the value of the frequency having the highest coefficient of performance, the value of the low capacity frequency Fm is smaller than that, and a value that does not significantly lower the coefficient of performance is selected.
  • the controller 40 In determining the inlet water temperature condition, the controller 40 first determines the first water temperature condition (S201). In this case, the controller 40 acquires the inlet water temperature TWI from the inlet water temperature sensor 32 and compares it with the first set value. In the present embodiment, the first set value is the protection temperature, which is set to, for example, 54 ° C. When the inlet water temperature TWI is lower than the first set value, the controller 40 determines that the first inlet water temperature condition is satisfied. On the other hand, when the inlet water temperature TWI is equal to or higher than the first set value, the controller 40 determines that the first inlet water temperature condition is not satisfied.
  • the first set value is the protection temperature, which is set to, for example, 54 ° C.
  • the controller 40 stops the compressor 1 (S105). As a result, the heating operation by the heat pump is completed.
  • the controller 40 activates the heater 15 (S202). As a result, the heating operation by the heater 15 is started. That is, the heat pump type hot water supply device HP switches from the heating operation by the heat pump to the heating operation by the heater 15.
  • the controller 40 determines the second inlet water temperature condition (S203). In this case, the heat pump type hot water supply device HP continues the heating operation by the heat pump without switching to the heating operation by the heater 15. In determining the second inlet water temperature condition, the controller 40 compares the inlet water temperature TWI with the second set value.
  • the second set value is smaller than the first set value, and in the present embodiment, as an example, the second set value is set to about 52 ° C., which is lower than the first set value, which is the protection temperature, for example, 54 ° C.
  • the controller 40 determines that the second inlet water temperature condition is satisfied.
  • the controller 40 determines that the second inlet water temperature condition is not satisfied.
  • the controller 40 When the second inlet water temperature condition is satisfied, the controller 40 operates the compressor 1 at a rotation speed corresponding to the high efficiency frequency F1 (S204). Therefore, the controller 40 increases or decreases the rotation speed according to the rotation speed of the compressor 1 at this time so that the frequency of the compressor 1 becomes the high efficiency frequency F1.
  • the controller 40 operates the compressor 1 at a rotation speed corresponding to the low capacity frequency Fm (S205). Therefore, the controller 40 increases or decreases the rotation speed according to the rotation speed of the compressor 1 at this time so that the frequency of the compressor 1 becomes the low capacity frequency Fm.
  • the controller 40 determines the thermo-off condition (S104).
  • the controller 40 determines the first inlet water temperature condition again (S201). That is, the controller 40 appropriately repeats the subsequent processing steps depending on the success or failure of the first inlet water temperature condition until the thermo-off condition is satisfied.
  • the controller 40 performs a predetermined thermo-off process (S206). As a thermo-off process, the controller 40 stops each device as follows. The controller 40 stops the compressor 1 if the compressor 1 is activated, and stops the heater 15 if the heater 15 is activated. Further, the controller 40 stops the circulation pump 11. As a result, the heating operation of the heat pump type hot water supply device HP is completed.
  • the heat pump type hot water supply device HP of the present embodiment when the inlet water temperature TWI is equal to or less than the second set value (for example, 52 ° C.), the heating operation is performed by the heat pump at the high efficiency frequency F1.
  • the tank water temperature TTW can be raised efficiently.
  • the protection temperature for example, 54 ° C.
  • the operation is not continued at the high efficiency frequency F1 until the inlet water temperature TWI reaches the protection temperature (first set value), and the capacity is low between the second set value and the first set value. It can be operated at a frequency of Fm.
  • the operation at the high efficiency frequency F1 is continued until the inlet water temperature TWI reaches the protection temperature, the inlet water temperature TWI rises significantly due to the large heating capacity, and the temperature exceeds the protection temperature in a short time. In this case, the operation is switched to heating by a heater, which is less efficient than the heat pump.
  • the heating capacity is appropriately adjusted when the inlet water temperature TWI approaches the protection temperature. Can be lowered. Therefore, the degree of increase in the inlet water temperature TWI can be moderated, the time until the protection temperature is reached can be extended, and the tank water temperature TTW can be gradually increased.
  • the compressor 1 is heated and operated at the low capacity frequency Fm in this way, the average temperature of the tank water temperature TTW until the tank water temperature TTW reaches the protection temperature is compared with the case where the compressor 1 is heated and operated at the high efficiency frequency F1. Can be increased.
  • the operation frequency and integrated time of the heater 15 can be suppressed by heating the compressor 1 at a low capacity frequency Fm and continuing the heating operation by the heat pump as much as possible.
  • the operating efficiency of the heat pump type hot water supply device HP can be improved, and energy can be saved.
  • the value of the first set value which is the above-mentioned protection temperature, is individually set according to the type of the refrigerant used in the refrigeration cycle of the heat pump type hot water supply device HP and the form of the compressor 1.
  • the setting of the second set value if the temperature difference from the first set value is made as small as possible, the time ratio during which the compressor 1 can be operated at the high efficiency frequency F1 increases, but if this temperature difference is made too small, There is an increased possibility that the heating by the operation of the compressor 1 will be switched to the heating by the heater 15 at an early stage. Therefore, in consideration of the overshoot of the inlet water temperature TWI during heating by the operation of the compressor 1, it is preferable to set the second set value to a value 1 to 2 ° C. lower than the first set value.
  • the heater 15 for heating the water in the hot water supply tank 13 is provided in the hot water supply tank 13, but the heater 15 is located between the heat dissipation coil (water radiator) 14 and the water heat exchanger 3. It may be provided in the circulation path of flowing water. However, when the heater 15 is provided in the water circulation path, the circulation pump 11 needs to be always operated while the compressor 1 is operating and the heater 15 is energized.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Water Supply & Treatment (AREA)
  • Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
  • Steam Or Hot-Water Central Heating Systems (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)

Abstract

Selon un mode de réalisation, ce chauffe-eau à pompe à chaleur comprend un compresseur, un échangeur de chaleur à eau, un réservoir, un radiateur à eau, une pompe, un dispositif de chauffage, un premier capteur de température, un second capteur de température et une unité de commande. Le premier capteur de température détecte la première température de l'eau à partir de laquelle la chaleur se dissipe dans l'eau stockée dans le réservoir et qui s'écoule dans le trajet d'écoulement de l'échangeur de chaleur à eau. Le second capteur de température détecte la seconde température de l'eau stockée dans le réservoir. L'unité de commande commande le fonctionnement ou l'arrêt du compresseur sur la base de la première température et de la seconde température et commande également la vitesse de rotation du compresseur sur la base de la première température lorsque le compresseur fonctionne.
PCT/JP2020/012644 2020-03-23 2020-03-23 Dispositif de source de chaleur pour pompe à chaleur et chauffe-eau à pompe à chaleur WO2021191949A1 (fr)

Priority Applications (3)

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AU2020438844A AU2020438844B2 (en) 2020-03-23 2020-03-23 Heat pump heat source device and heat pump water heater
EP20927543.7A EP4130599A4 (fr) 2020-03-23 2020-03-23 Dispositif de source de chaleur pour pompe à chaleur et chauffe-eau à pompe à chaleur
PCT/JP2020/012644 WO2021191949A1 (fr) 2020-03-23 2020-03-23 Dispositif de source de chaleur pour pompe à chaleur et chauffe-eau à pompe à chaleur

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PCT/JP2020/012644 WO2021191949A1 (fr) 2020-03-23 2020-03-23 Dispositif de source de chaleur pour pompe à chaleur et chauffe-eau à pompe à chaleur

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NL2034018B1 (en) * 2023-01-24 2024-07-30 Conico Valves B V heat pump system, heating system comprising the heat pump system and method of operating the heat pump system

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AU2020438844B2 (en) 2023-11-02
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AU2020438844A1 (en) 2022-10-13

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