WO2023275946A1 - Chauffe-eau à pompe à chaleur - Google Patents

Chauffe-eau à pompe à chaleur Download PDF

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Publication number
WO2023275946A1
WO2023275946A1 PCT/JP2021/024402 JP2021024402W WO2023275946A1 WO 2023275946 A1 WO2023275946 A1 WO 2023275946A1 JP 2021024402 W JP2021024402 W JP 2021024402W WO 2023275946 A1 WO2023275946 A1 WO 2023275946A1
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WO
WIPO (PCT)
Prior art keywords
heat pump
storage unit
water
heat
pump unit
Prior art date
Application number
PCT/JP2021/024402
Other languages
English (en)
Japanese (ja)
Inventor
直也 竹田
Original Assignee
三菱電機株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to US18/555,967 priority Critical patent/US20240328672A1/en
Priority to EP21948258.5A priority patent/EP4365507A4/fr
Priority to PCT/JP2021/024402 priority patent/WO2023275946A1/fr
Priority to JP2023531161A priority patent/JPWO2023275946A1/ja
Publication of WO2023275946A1 publication Critical patent/WO2023275946A1/fr

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Classifications

    • 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
    • F24H15/10—Control of fluid heaters characterised by the purpose of the control
    • F24H15/156—Reducing the quantity of energy consumed; Increasing efficiency
    • 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
    • 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
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/18—Water-storage heaters
    • 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
    • F24H15/10—Control of fluid heaters characterised by the purpose of the control
    • F24H15/174—Supplying heated water with desired temperature or desired range of temperature
    • 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
    • F24H15/305—Control of valves
    • F24H15/315—Control of valves of mixing valves
    • 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
    • F24H15/305—Control of valves
    • F24H15/325—Control of valves of by-pass valves
    • 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
    • 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
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H7/00—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release
    • F24H7/02—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release the released heat being conveyed to a transfer fluid
    • F24H7/04—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release the released heat being conveyed to a transfer fluid with forced circulation of the transfer fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
    • F28D20/0034—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using liquid heat storage material
    • F28D20/0039—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using liquid heat storage material with stratification of the heat storage material
    • 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
    • F24D2200/00—Heat sources or energy sources
    • F24D2200/12—Heat pump
    • F24D2200/123—Compression type 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
    • F24D2220/00—Components of central heating installations excluding heat sources
    • F24D2220/02—Fluid distribution means
    • F24D2220/0235—Three-way-valves
    • 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
    • F24D2220/00—Components of central heating installations excluding heat sources
    • F24D2220/08—Storage tanks

Definitions

  • the present disclosure relates to a heat pump water heater.
  • Patent Document 1 describes a heat pump water heater.
  • a heat pump water heater described in Patent Document 1 includes a heat storage unit for improving energy efficiency.
  • the heat storage unit in Patent Document 1 absorbs heat from water supplied from the hot water storage tank to the heat pump unit, thereby lowering the incoming water temperature of the water supplied to the heat pump unit. This improves the heat exchange efficiency of the heat pump unit.
  • An object of the present disclosure is to obtain a heat pump water heater that is advantageous in improving energy efficiency.
  • a heat pump water heater includes a hot water storage tank having a heat pump unit that heats water, a high temperature section that stores water heated by the heat pump unit, and a low temperature section that stores water at a temperature lower than the water stored in the high temperature section.
  • a water inlet pipe that supplies water from the low temperature part to the heat pump unit;
  • a heat storage unit that stores heat by absorbing heat from the water flowing through the water inlet pipe;
  • a first branch valve for switching a flow path, and a first bypass pipe connecting between the heat storage unit and the heat pump unit and the first branch valve are provided.
  • the first branch valve has a flow path that connects the low temperature section and the heat pump unit via the heat storage unit, and a flow path that connects the low temperature section and the heat pump unit via the first bypass pipe without passing through the heat storage unit. , can be switched.
  • FIG. 1 is a configuration diagram of a heat pump water heater according to Embodiment 1.
  • FIG. 2 is a functional block diagram of the heat pump water heater of Embodiment 1.
  • FIG. 3 is a diagram showing an example of a configuration for realizing functions of a control unit according to Embodiment 1;
  • FIG. 4 is a flow chart showing an example of a boiling operation by the heat pump water heater of Embodiment 1.
  • FIG. FIG. 2 is a flow diagram showing an example of a hot water supply operation by the heat pump water heater of Embodiment 1;
  • FIG. 1 is a configuration diagram of a heat pump water heater according to Embodiment 1.
  • FIG. FIG. 2 is a functional block diagram of the heat pump water heater of Embodiment 1.
  • FIG. FIG. 2 shows an excerpt of the main functions of the heat pump water heater according to the present embodiment.
  • the heat pump water heater is composed of a heat pump unit 101 and a hot water storage unit 102 .
  • the heat pump unit 101 functions as heating means for heating water. Water is supplied to the heat pump unit 101 from the hot water storage unit 102 .
  • the heat pump unit 101 heats water supplied from the hot water storage unit 102 .
  • the heat pump unit 101 includes a blower fan 103 , an air heat exchanger 104 , a compressor 105 , a water heat exchanger 106 and a decompression device 107 .
  • the blower fan 103 is a device that blows air to cool the air heat exchanger 104 .
  • the air heat exchanger 104 exchanges heat between the atmosphere and the refrigerant. Within the air heat exchanger 104, the refrigerant absorbs heat from the atmosphere. The refrigerant that has absorbed heat in air heat exchanger 104 is sent to compressor 105 .
  • the refrigerant sent to the compressor 105 is compressed and changed to a high temperature and high pressure state.
  • the refrigerant compressed by compressor 105 is sent to water heat exchanger 106 .
  • the water heat exchanger 106 exchanges heat between the water supplied from the hot water storage unit 102 and the high-temperature refrigerant. Water supplied from hot water storage unit 102 to heat pump unit 101 is heated in water heat exchanger 106 .
  • the refrigerant heat-exchanged in the water heat exchanger 106 is sent to the decompression device 107 .
  • the decompression device 107 expands the refrigerant, that is, decompresses it.
  • the refrigerant decompressed by decompression device 107 is sent to air heat exchanger 104 .
  • the refrigerant circulates as described above.
  • the hot water storage unit 102 includes a hot water storage tank 108 that stores water and a heat storage unit 109 that stores heat.
  • the hot water storage tank 108 has a high temperature section that stores water heated by the heat pump unit 101 and a low temperature section that stores water at a lower temperature than the water stored in the high temperature section.
  • the heat storage unit 109 absorbs and stores heat from water flowing through the water inlet pipe 117 that supplies water from the low temperature portion of the hot water storage tank 108 to the heat pump unit 101 . Due to the heat absorption by the heat storage unit 109, the incoming water temperature of the water supplied to the heat pump unit 101 can be lowered. Thereby, the heat exchange efficiency of the heat pump unit 101 can be improved.
  • the heat storage unit 109 may be provided outside the heat pump unit 101 .
  • the water inlet pipe 117 connects the low temperature part of the hot water storage tank 108 and the heat pump unit 101 .
  • water inlet pipe 117 passes through heat storage unit 109 .
  • a boiling pump 122 is provided in the water inlet pipe 117 .
  • Boiling pump 122 is a pump for circulating water between hot water storage tank 108 and heat pump unit 101 .
  • the heat pump water heater includes first branch valve 110 provided in water inlet pipe 117 .
  • the first branch valve 110 is a device for switching the flow path on the water inlet pipe 117 .
  • First branch valve 110 is provided between the low temperature portion of hot water storage tank 108 and heat storage unit 109 .
  • a first bypass pipe 115 is connected to the first branch valve 110 .
  • First bypass pipe 115 connects between heat storage unit 109 and heat pump unit 101 and first branch valve 110 .
  • the first bypass pipe 115 is a pipe branched from the water inlet pipe 117 between the heat storage unit 109 and the heat pump unit 101 and connected to the first branch valve 110 .
  • the first branch valve 110 connects the low temperature portion of the hot water storage tank 108 and the heat pump unit 101 via the heat storage unit 109 , and the low temperature portion of the hot water storage tank 108 and the heat pump unit 101 without the heat storage unit 109 .
  • the channel connected via the first bypass pipe 115 can be switched.
  • first branch valve 110 by controlling first branch valve 110 , water can be supplied from hot water storage tank 108 to heat pump unit 101 without going through heat storage unit 109 . As a result, it is possible to prevent the temperature of the water supplied to the heat pump unit 101 from rising due to the heat storage unit 109 . According to the present embodiment, it is possible to obtain a heat pump water heater that is advantageous in improving energy efficiency.
  • the heat pump hot water supply apparatus also includes hot water outlet pipe 118 for supplying water from heat pump unit 101 to the high temperature portion of hot water storage tank 108 .
  • the hot water pipe 118 connects the high temperature portion of the hot water storage tank 108 and the heat pump unit 101 .
  • This outlet pipe 118 may pass through the heat storage unit 109 as shown in FIG.
  • the heat storage unit 109 may absorb and store heat from the water flowing through the hot water supply pipe 118 .
  • the heat pump water heater includes second branch valve 111 provided in hot water outlet pipe 118 .
  • the second branch valve 111 is a device for switching the flow path on the hot water outlet pipe 118 .
  • Second branch valve 111 is provided between heat pump unit 101 and heat storage unit 109 .
  • a second bypass pipe 116 is connected to the second branch valve 111 .
  • the second bypass pipe 116 connects between the heat storage unit 109 and the heat pump unit 101 and the second branch valve 111 .
  • the second bypass pipe 116 is a pipe branched from the hot water outlet pipe 118 between the heat storage unit 109 and the hot part of the hot water storage tank 108 and connected to the second branch valve 111 .
  • the second branch valve 111 connects the high temperature portion of the hot water storage tank 108 and the heat pump unit 101 via the heat storage unit 109, and the high temperature portion of the hot water storage tank 108 and the heat pump unit 101 without the heat storage unit 109. and the flow path connected via the second bypass pipe 116 can be switched.
  • the heat pump water heater may include third branch valve 112 provided in hot water outlet pipe 118 between the high temperature portion of hot water storage tank 108 and heat storage unit 109 .
  • the third branch valve 112 is connected to a mixing valve 113 that is connected to the high temperature portion of the hot water storage tank 108 .
  • the mixing valve 113 has a function of mixing the outflow water from the high-temperature part of the hot water storage tank 108 and the low-temperature water from a water source such as city water to adjust the outlet temperature of the water supplied to the user.
  • a water source such as city water is connected to the mixing valve 113 .
  • a water source such as city water is also connected to the low temperature part of the hot water storage tank 108 .
  • the hot water storage unit 102 includes a pressure reducing valve 114 for adjusting low-temperature water supplied from a water source such as city water to a predetermined pressure.
  • the heat pump water heater includes a heat pump unit outflow water temperature detection unit 119, a heat storage unit internal temperature detection unit 120, and a hot water storage tank low temperature part outflow water temperature detection unit 121.
  • a heat pump unit outflow water temperature detector 119 detects the temperature of water flowing out of the heat pump unit 101 .
  • the heat storage unit internal temperature detection unit 120 detects the temperature inside the heat storage unit 109 .
  • Hot water storage tank low temperature part outflow water temperature detection unit 121 detects the temperature of water flowing out from the low temperature part of hot water storage tank 108 . A plurality of these detection units may be provided.
  • the heat pump water heater according to the present embodiment is controlled according to the detection result of each detection unit described above.
  • the heat pump water heater according to the present embodiment may include a control unit 130 for controlling the heat pump water heater.
  • the control unit 130 controls the first branch valve 110, the second It controls the two branch valve 111, the third branch valve 112, and the like.
  • FIG. 3 is a diagram showing an example of a configuration that implements the functions of the control unit 130 according to the first embodiment.
  • the functions of the control unit 130 are implemented by, for example, a processing circuit.
  • the processing circuitry may be dedicated hardware 140 .
  • the processing circuitry may comprise processor 141 and memory 142 .
  • a portion of the processing circuitry may be formed as dedicated hardware 140 and may further comprise a processor 141 and memory 142 .
  • part of the processing circuitry is formed as dedicated hardware 140 .
  • the processing circuitry further comprises a processor 141 and a memory 142 .
  • a processing circuit part of which is at least one piece of dedicated hardware 140, can be, for example, a single circuit, multiple circuits, programmed processors, parallel programmed processors, ASICs, FPGAs, or combinations thereof. .
  • each function of the control unit 130 is implemented by software, firmware, or a combination of software and firmware.
  • the software and firmware are written as programs and stored in the memory 142.
  • the processor 141 reads out and executes programs stored in the memory 142 to achieve the functions of each unit.
  • the processor 141 is also called a CPU (Central Processing Unit), central processing unit, processing unit, arithmetic unit, microprocessor, microcomputer, or DSP.
  • the memory 142 corresponds to, for example, non-volatile or volatile semiconductor memory such as RAM, ROM, flash memory, EPROM and EEPROM, magnetic disk, flexible disk, optical disk, compact disk, mini-disk and DVD.
  • the processing circuit can realize each function of the control unit 130 by hardware, software, firmware, or a combination thereof.
  • FIG. 4 is a flow chart showing an example of a boiling operation by the heat pump water heater of Embodiment 1.
  • FIG. 4 When the amount of hot water remaining in the hot water storage tank 108 becomes small, the heat pump unit 101 is operated as necessary to perform a boiling operation, and hot water is stored in the hot water storage tank 108 .
  • step S100 it is determined whether the temperature of the water flowing out from the low temperature part of the hot water storage tank 108 is higher or lower than the temperature inside the heat storage unit 109 (step S101). This determination is made by the control unit 130 based on the detection result of each detection unit described above.
  • Step S102 When the temperature of the water flowing out from the low temperature part of the hot water storage tank 108 is higher than the temperature in the heat storage unit 109, the hot water storage tank 108 and the heat storage unit 109 are connected by the first branch valve 110, and heat is stored by the heat storage unit 109.
  • Step S102 When the temperature of the water flowing out of the low-temperature portion of hot water storage tank 108 is lower than the temperature in heat storage unit 109, hot water storage tank 108 and heat pump unit 101 are connected by first branch valve 110 without interposing heat storage unit 109, and the heat storage unit 109 is connected. No heat is stored by the unit 109 (step S103).
  • the heat storage unit 109 stores heat. As a result, the temperature of water entering the heat pump unit 101 can be lowered. Further, when the temperature in the heat storage unit 109 is higher than the temperature of the water flowing out from the low temperature portion of the hot water storage tank 108, the heat storage unit 109 does not store heat. As a result, an increase in the temperature of water entering the heat pump unit 101 due to the heat storage unit 109 can be avoided.
  • FIG. 5 is a flowchart showing an example of the hot water supply operation by the heat pump water heater of Embodiment 1.
  • the hot water supply operation is an operation in which the heat pump unit water heater supplies hot water to the outside.
  • the hot water supply operation includes, for example, various operations such as filling hot water into a bathtub and supplying hot water to an arbitrary hot water supply terminal.
  • step S200 it is determined whether the temperature of the water flowing out of the heat pump unit 101 is higher or lower than the temperature in the heat storage unit 109 (step S201). This determination is made by the control unit 130 based on the detection result of each detection unit described above.
  • Step S202 When the temperature of the water flowing out of the heat pump unit 101 is lower than the temperature in the heat storage unit 109, the second branch valve 111 connects the hot water tank 108 and the heat storage unit 109 to increase the temperature of the water flowing out of the heat pump unit 101.
  • Step S202 On the other hand, when the temperature of water flowing out of heat pump unit 101 is higher than the temperature in heat storage unit 109 , second branch valve 111 allows heat pump unit 101 and the high temperature portion of hot water storage tank 108 to flow through heat storage unit 109 without passing through heat storage unit 109 . 2 bypass pipe 116 (step S203).
  • the outflow water from the heat pump unit 101 is mixed with the outflow water from the high-temperature portion of the hot water storage tank 108, city water, or the like in the mixing valve 113 and then discharged.
  • energy loss can be suppressed by heat exchange between the heat storage unit 109 and the outflow water from the heat pump unit 101 .
  • the above-mentioned The boiling operation may be started automatically.
  • the flow path is controlled by the first branch valve 110 according to the determination result as to whether the temperature of the water flowing out from the low temperature portion of the hot water storage tank 108 is higher or lower than the temperature in the heat storage unit 109. is executed.
  • the heat pump water heater according to the present disclosure can be used, for example, to fill hot water into a bathtub or to supply hot water to any hot water supply terminal.

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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)
  • Heat-Pump Type And Storage Water Heaters (AREA)

Abstract

Selon l'invention, le chauffe-eau à pompe à chaleur comprend : une unité de pompe à chaleur (101) destinée à chauffer de l'eau ; un bac de réservoir d'eau chaude (108) présentant une section à haute température destinée à stocker de l'eau chauffée par l'unité de pompe à chaleur (101) et une section à basse température destinée à stocker de l'eau à une température inférieure à celle de l'eau stockée dans la section à haute température ; une tuyauterie d'entrée (117) destinée à fournir de l'eau de la section à basse température à l'unité de pompe à chaleur (101) ; une unité de stockage thermique (109) destinée à absorber la chaleur provenant de l'eau s'écoulant à travers la tuyauterie d'entrée (117) et à stocker la chaleur ; une première soupape de dérivation (110) destinée à commuter entre des trajets d'écoulement dans la tuyauterie d'entrée (117), la première soupape de dérivation (110) étant disposée entre la section à basse température et l'unité de stockage thermique (109) ; et une première tuyauterie de dérivation (115) destinée à raccorder la première soupape de dérivation (110) entre l'unité de stockage thermique (109) et l'unité de pompe à chaleur (101). La première soupape de dérivation (110) est apte à commuter entre un trajet d'écoulement dans lequel la section à basse température et l'unité de pompe à chaleur (101) sont raccordées par l'intermédiaire de l'unité de stockage thermique (109), et un trajet d'écoulement dans lequel la section à basse température et l'unité de pompe à chaleur (101) sont reliées sans interposition de l'unité de stockage thermique (109).
PCT/JP2021/024402 2021-06-28 2021-06-28 Chauffe-eau à pompe à chaleur WO2023275946A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US18/555,967 US20240328672A1 (en) 2021-06-28 2021-06-28 Heat pump water heater
EP21948258.5A EP4365507A4 (fr) 2021-06-28 2021-06-28 Chauffe-eau à pompe à chaleur
PCT/JP2021/024402 WO2023275946A1 (fr) 2021-06-28 2021-06-28 Chauffe-eau à pompe à chaleur
JP2023531161A JPWO2023275946A1 (fr) 2021-06-28 2021-06-28

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2021/024402 WO2023275946A1 (fr) 2021-06-28 2021-06-28 Chauffe-eau à pompe à chaleur

Publications (1)

Publication Number Publication Date
WO2023275946A1 true WO2023275946A1 (fr) 2023-01-05

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PCT/JP2021/024402 WO2023275946A1 (fr) 2021-06-28 2021-06-28 Chauffe-eau à pompe à chaleur

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US (1) US20240328672A1 (fr)
EP (1) EP4365507A4 (fr)
JP (1) JPWO2023275946A1 (fr)
WO (1) WO2023275946A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003035141A (ja) * 2001-07-26 2003-02-07 Mitsubishi Motors Corp エンジン冷却水制御装置
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