EP3904782A1 - Chauffe-eau - Google Patents

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Publication number
EP3904782A1
EP3904782A1 EP20809390.6A EP20809390A EP3904782A1 EP 3904782 A1 EP3904782 A1 EP 3904782A1 EP 20809390 A EP20809390 A EP 20809390A EP 3904782 A1 EP3904782 A1 EP 3904782A1
Authority
EP
European Patent Office
Prior art keywords
heat storage
storage device
heat
water
heat exchange
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
EP20809390.6A
Other languages
German (de)
English (en)
Other versions
EP3904782A4 (fr
Inventor
Chun Liu
Chenchen Wang
Yang XI
Pengyun WEI
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Midea Group Co Ltd
Hefei Midea Heating and Ventilating Equipment Co Ltd
Original Assignee
Midea Group Co Ltd
Hefei Midea Heating and Ventilating Equipment Co Ltd
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 Midea Group Co Ltd, Hefei Midea Heating and Ventilating Equipment Co Ltd filed Critical Midea Group Co Ltd
Publication of EP3904782A1 publication Critical patent/EP3904782A1/fr
Publication of EP3904782A4 publication Critical patent/EP3904782A4/fr
Pending legal-status Critical Current

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Classifications

    • 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
    • F24D19/1051—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
    • F24H15/00—Control of fluid heaters
    • F24H15/20—Control of fluid heaters characterised by control inputs
    • 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
    • F24H15/385—Control of expansion valves of 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
    • 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
    • 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
    • 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
    • F28D20/02—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using latent heat
    • F28D20/021—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using latent heat the latent heat storage material and the heat-exchanging means being enclosed in one container
    • 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
    • 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
    • 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
    • F24H15/10—Control of fluid heaters characterised by the purpose of the control
    • F24H15/176—Improving or maintaining comfort of users
    • 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
    • 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
    • F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/24—Storage receiver heat
    • 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
    • F25B2600/00—Control issues
    • F25B2600/25—Control of valves
    • F25B2600/2513—Expansion valves
    • 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
    • F25B2700/00—Sensing or detecting of parameters; Sensors therefor
    • F25B2700/21—Temperatures
    • F25B2700/2111—Temperatures of a heat storage receiver
    • 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
    • F28D2020/0065—Details, e.g. particular heat storage tanks, auxiliary members within tanks
    • F28D2020/0082—Multiple tanks arrangements, e.g. adjacent tanks, tank in tank
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2270/00—Thermal insulation; Thermal decoupling

Definitions

  • the present application relates to a field of household appliances, and more particularly, to a water heater.
  • a household water heater mainly includes a gas water heater, an electric water heater and an air energy water heater.
  • the air energy water heater is attracting more and more attention due to its high energy efficiency.
  • the air energy water heater includes an air energy water heater of a static heating type, an air energy water heater of a circulating type, etc.
  • the household water heater generally is the air energy water heater of the static heating type.
  • the air energy water heater of the static heating type uses a water tank with a certain volume, generally 150L/200L for the household water heater. The heat is stored in the water tank in the form of sensible heat. When a user needs water, hot water can be discharged from the water tank.
  • a household heat pump product generally will occupy the area of the house due to its large-volume water tank, and bacteria will grow when it is not used for a long time. It is necessary to drain the whole tank of water and fill the whole tank with new cold water, thus resulting in a waste of resources.
  • the present application is intended to solve at least one of the technical problems existing in the prior or related art.
  • the present application provides a water heater.
  • the present application provides a water heater, including: an outdoor unit provided with a refrigerant therein; a heat storage device including a gas input pipe and a liquid output pipe communicated with the outdoor unit, the outdoor unit being configured to cause the refrigerant to flow from the gas input pipe to the heat storage device and to flow out from the liquid output pipe, to allow the heat storage device to store heat.
  • a heat storage device including a gas input pipe and a liquid output pipe communicated with the outdoor unit, the outdoor unit being configured to cause the refrigerant to flow from the gas input pipe to the heat storage device and to flow out from the liquid output pipe, to allow the heat storage device to store heat.
  • At least two heat storage devices are provided, the at least two heat storage devices are connected in parallel, the liquid output pipe of any heat storage device is provided with a valve, and the valve is configured to adjust a flow rate of the refrigerant passing through the heat storage device.
  • the water heater provided in the present application includes the outdoor unit and the heat storage device, and the outdoor unit and the heat storage device are communicated through the gas input pipe and the liquid output pipe.
  • the outdoor unit can compress the refrigerant into a high-temperature and high-pressure state, and the compressed refrigerant flows from the outdoor unit to the heat storage device through the gas input pipe, and exchanges heat with a phase change material in the heat storage device, so that the heat is stored in the heat storage device to be used by a user at any time. After the heat exchange, the refrigerant flows through the liquid output pipe of the heat storage device back to the outdoor unit, and proceeds to the next cycle. At least two heat storage devices are provided, and the at least two heat storage devices are connected in parallel.
  • the liquid output pipe of any heat storage device is provided with the valve, i.e. the liquid output pipe of each heat storage device is provided with one valve correspondingly.
  • the valve is configured to regulate the flow rate of the refrigerant flowing to the heat storage device corresponding to the valve, thus controlling a heating speed of the outdoor unit on the heat storage device. Therefore, the heating of a specific heat storage device is achieved.
  • An opening degree of the valve can be adjusted to achieve the separate heating of one heat storage device, the heating speed is fast, and the purpose of rapid heating is achieved, so as to meet a rapid water demand of the user.
  • the heat storage device does not need to store water or only stores a small amount of stagnant water, so that the function of living water is realized, thus significantly reducing the volume of the heat storage device.
  • the outdoor unit and the heat storage device are installed separately, which can realize the indoor heat storage and water without noise, thus improving the user's usage comfort.
  • the heat storage device may also be installed in an exposed or hidden manner, thus saving the user's usage space.
  • the compressor is configured to compress a gas, and a gas discharge port of the compressor is always for a high-temperature gaseous refrigerant.
  • the gaseous refrigerant discharged from the compressor is condensed into a liquid state after passing through the heat storage device, the liquid refrigerant enters the evaporator after being depressurized through a throttling device in the outdoor unit, and then evaporates and absorbs heat in the evaporator to change into the gaseous refrigerant, and the gaseous refrigerant enters the compressor again.
  • the water heater provided by the present application may also include the following additional features.
  • any heat storage device is provided with a water input pipe and a water output pipe.
  • the water input pipe and the water output pipe are arranged on any heat storage device.
  • a water flow enters from the water input pipe, passes through the heat storage device and exchanges heat with the heat storage device, and hot water flows out from the water output pipe.
  • any heat storage device is provided with the water input pipe and the water output pipe, at least two heat storage devices may be placed in different spaces, and multiple heat storage devices may be heated by one outdoor unit, so as to be used by the user in the different spaces.
  • the heat storage device further includes: a housing filled with a phase change material therein; a heat exchanger arranged in the housing.
  • the heat exchanger includes a heat exchange flow path and a heat exchange water path, and the phase change material is filled between the heat exchange flow path and the heat exchange water path.
  • the heat exchange water path is communicated with the water input pipe and the water output pipe, and the heat exchange flow path is communicated with the outdoor unit through the gas input pipe and the liquid output pipe.
  • the refrigerant can flow from the outdoor unit through the gas input pipe to the heat exchange flow path.
  • the heat storage device further includes the housing and the heat exchanger arranged in the housing, the heat exchange flow path and the heat exchange water path are arranged in the heat exchanger, and the phase change material is filled between the heat exchange water path and the heat exchange flow path, so as to realize the heat exchange between the refrigerant and the water.
  • the heat exchange flow path is communicated with the outdoor unit, the refrigerant passes through the heat exchange flow path and exchanges heat with the phase change material, and the heat is stored in the phase change material.
  • the heat exchange water path is communicated with the water input pipe and the water output pipe, and the water flow enters the heat exchange water path from the water input pipe, exchanges heat with the phase change material, then changes into the hot water and flows out from the water output pipe, thus meeting the water demand of the user.
  • the outdoor unit and the heat exchange flow path are communicated through the gas input pipe and the liquid output pipe, to allow the refrigerant to flow, so that the refrigerant exchanges heat with the phase change material in the housing.
  • an inner wall of the housing is coated with a heat insulation structure for insulating the phase change material from the housing, so as to prevent the heat from being dissipated through the housing.
  • the heat storage device further includes a temperature detection structure, which is arranged in the housing and configured to detect a temperature of the phase change material.
  • the heat storage device further includes the temperature detection structure arranged in the housing.
  • the temperature detection structure is embedded in the phase change material for detecting the temperature of the phase change material, determining the heat remained in the phase change material, and judging whether a heat storage action is completed or whether the phase change material needs to be heated according to the temperature in the phase change material.
  • the temperature detection structure is a temperature sensitive package.
  • the water heater further includes a control device, which is communicated with the temperature detection structure and the valve, and is configured to adjust the opening degree of the valve according to the temperature detection structure.
  • the water heater further includes the control device, and the control device is communicated with the temperature detection structure and the valve so as to adjust the opening degree of the valve according to the temperature detection structure, thereby controlling the heating speed of the outdoor unit on the heat storage device.
  • a heating mode when the heat storage device needs to be heated, the outdoor unit starts to operate, and a high-temperature and high-pressure gaseous refrigerant enters the heat exchanger of the heat storage device from the gas input pipe, condenses and releases heat in the heat storage device, then flows out from the liquid output pipe and returns to the outdoor unit after being throttled by the valve.
  • the temperature detection structure detects the temperature of the phase change material. When the temperature of the phase change material reaches a preset temperature, it indicates that the heat storage device has completed the heat storage, and the opening degree of the valve corresponding to the heat storage device is reduced to a certain one. When all the heat storage devices have completed the heat storage, the outdoor unit stops operating.
  • the compressor of the outdoor unit operates at a high frequency
  • the opening degree of the valve corresponding to this heat storage device is set to the maximum
  • the opening degrees of the valves corresponding to other heat storage devices are each reduced to a certain one, so that most of the refrigerant circulating in a system circulates in this heat storage device to achieve the purpose of rapid heating.
  • the heat exchange flow path and the heat exchange water path are intersected.
  • the heat exchange flow path and the heat exchange water path are intersected, which improves the heat exchange efficiency, so that the heat transferred from the heat exchange flow path to the phase change material can be quickly transferred to the heat exchange water path, so as to allow a cold water flowing through the heat exchange water path to be quickly heated, thus meeting a real-time water demand of the user.
  • the heat exchanger is a fin heat exchanger or a plate heat exchanger.
  • the heat exchanger is the fin heat exchanger or the plate heat exchanger, thereby improving the heat exchange efficiency of the heat exchanger.
  • a phase change temperature of the phase change material is larger than or equal to 45°C and less than or equal to 80°C.
  • the phase change temperature of the phase change material is larger than or equal to 45°C and less than or equal to 80°C.
  • the volume of the water heater provided by the present application is reduced by more than 45% in comparison with the water-storage heat-pump water heater.
  • the outdoor unit further includes: a casing communicated with the heat exchange flow path through the gas input pipe and the liquid output pipe; a compressor arranged in the casing and communicated with the liquid input and output pipe; an evaporator arranged in the casing and communicated with the compressor and the gas output and input pipe respectively.
  • the compressor can compress the refrigerant and causes the refrigerant to flow from the compressor to the heat storage device through the gas input pipe, and to flow from the liquid output pipe to the compressor through the evaporator, so that the heat storage device stores heat.
  • the outdoor unit further includes the casing as well as the compressor and the evaporator arranged in the casing.
  • the compressor compresses the refrigerant, and the refrigerant is compressed into a high-temperature and high-pressure gaseous state in the compressor and then enters the heat storage device, flows from the liquid output pipe to the evaporator after exchanging heat in the heat storage device, evaporates in the evaporator and then returns to the compressor.
  • the refrigerant exchanges heat with the phase change material, and the heat is stored in the heat storage device. After the heat exchange, the refrigerant flows back to the compressor from the heat storage device through the liquid output pipe and proceeds to the next cycle.
  • the outdoor unit further includes a four-way valve, a condenser, a fan, a throttling element, and a control module.
  • the valve is an electronic expansion valve.
  • the valve is the electronic expansion valve, and the flow rate of the refrigerant passing through the heat storage device can be controlled by controlling the opening degree of the electronic expansion valve, thereby controlling the heating speed on the heat storage device.
  • a water heater is provided.
  • a water heater including: an outdoor unit 1 with a refrigerant provided therein; a heat storage device 2 including a gas input pipe 20 and a liquid output pipe 21 communicated with the outdoor unit 1.
  • the outdoor unit 1 can cause the refrigerant to flow through the gas input pipe 20 to the heat storage device 2 and out of the liquid output pipe 21, so that the heat storage device 2 stores heat.
  • At least two heat storage devices 2 are provided, and the at least two heat storage devices 2 are connected in parallel.
  • the liquid output pipe 21 of any heat storage device 2 is provided with a valve 22, and the valve 22 is configured to regulate a flow rate of the refrigerant passing through the heat storage device 2.
  • the water heater provided in the present application includes the outdoor unit 1 and the heat storage device 2, and the outdoor unit 1 and the heat storage device 2 are communicated through the gas input pipe 20 and the liquid output pipe 21.
  • the outdoor unit 1 can compress the refrigerant into a high-temperature and high-pressure state, and the compressed refrigerant flows from the outdoor unit 1 to the heat storage device 2 through the gas input pipe 20, and exchanges heat with a phase change material 26 in the heat storage device 2, so that the heat is stored in the heat storage device 2 to be used by a user at any time. After the heat exchange, the refrigerant flows through the liquid output pipe 21 of the heat storage device 2 back to the outdoor unit 1, and proceeds to the next cycle.
  • At least two heat storage devices 2 are provided, and the at least two heat storage devices 2 are connected in parallel.
  • the liquid output pipe 21 of any heat storage device 2 is provided with the valve 22, i.e. the liquid output pipe 21 of each heat storage device 2 is provided with one valve 22 correspondingly.
  • the valve 22 is configured to regulate the flow rate of the refrigerant flowing to the heat storage device 2 corresponding to the valve 22, thus controlling a heating speed of the outdoor unit 1 on the heat storage device 2. Therefore, the heating of a specific heat storage device 2 is achieved.
  • An opening degree of the valve 22 can be adjusted to achieve the separate heating of one heat storage device 2, the heating speed is fast, and the purpose of rapid heating is achieved, so as to meet a rapid water demand of the user.
  • the heat storage device 2 does not need to store water or only stores a small amount of stagnant water, so that the function of living water is realized, thus significantly reducing the volume of the heat storage device 2.
  • the outdoor unit 1 and the heat storage device 2 are installed separately, which can realize the indoor heat storage and water without noise, thus improving the user's usage comfort.
  • the heat storage device 2 may also be installed in an exposed or hidden manner, thus saving the user's usage space.
  • the compressor is configured to compress a gas, and a gas discharge port of the compressor is always for a high-temperature gaseous refrigerant.
  • the gaseous refrigerant discharged from the compressor is condensed into a liquid state after passing through the heat storage device 2, the liquid refrigerant enters the evaporator after being depressurized through a throttling device in the outdoor unit, and then evaporates and absorbs heat in the evaporator to change into the gaseous refrigerant, and the gaseous refrigerant enters the compressor again.
  • any heat storage device 2 is provided with a water input pipe 23 and a water output pipe 24.
  • the water input pipe 23 and the water output pipe 24 are arranged on any heat storage device 2.
  • a water flow enters from the water input pipe 23, passes through the heat storage device 2 and exchanges heat with the heat storage device 2, and a hot water flows out from the water output pipe 24.
  • any heat storage device 2 is provided with the water input pipe 23 and the water output pipe 24, at least two heat storage devices 2 may be placed in different spaces, and multiple heat storage devices 2 may be heated by one outdoor unit 1, so as to be used by the user in the different spaces.
  • the heat storage device 2 further includes: a housing 25 filled with the phase change material 26 therein; a heat exchanger (not shown in the drawings) arranged in the housing 25.
  • the heat exchanger includes a heat exchange flow path and a heat exchange water path, and the phase change material 26 is filled between the heat exchange flow path and the heat exchange water path.
  • the heat exchange water path is communicated with the water input pipe 23 and the water output pipe 24, and the heat exchange flow path is communicated with the outdoor unit 1 through the gas input pipe 20 and the liquid output pipe 21.
  • the refrigerant can flow from the outdoor unit 1 through the gas input pipe 20 to the heat exchange flow path.
  • the heat storage device 2 further includes the housing 25 and the heat exchanger arranged in the housing 25, the heat exchange flow path and the heat exchange water path are arranged in the heat exchanger, and the phase change material 26 is filled between the heat exchange water path and the heat exchange flow path, so as to realize the heat exchange between the refrigerant and the water.
  • the heat exchange flow path is communicated with the outdoor unit 1, the refrigerant passes through the heat exchange flow path and exchanges heat with the phase change material 26, and the heat is stored in the phase change material 26.
  • the heat exchange water path is communicated with the water input pipe 23 and the water output pipe 24, and the water flow enters the heat exchange water path from the water input pipe 23 in a direction of an arrow on the water input pipe 23 in Fig. 2 , exchanges heat with the phase change material 26, then changes into the hot water and flows out from the water output pipe 24 in a direction of an arrow on the water output pipe 24 in Fig. 2 , thus meeting the water demand of the user.
  • the outdoor unit 1 and the heat exchange flow path are communicated through the gas input pipe 20 and the liquid output pipe 21, to allow the refrigerant to flow, so that the refrigerant exchanges heat with the phase change material 26 in the housing 25.
  • a flow direction of the refrigerant is shown by arrows on the gas input pipe 20 and the liquid output pipe 21 in Fig. 1 .
  • an inner wall of the housing 25 is coated with a heat insulation structure for insulating the phase change material 26 from the housing 25, so as to prevent the heat from being dissipated through the housing 25.
  • the heat storage device 2 further includes a temperature detection structure 27, which is arranged in the housing 25 and configured to detect a temperature of the phase change material 26.
  • the heat storage device 2 further includes the temperature detection structure 27 arranged in the housing 25.
  • the temperature detection structure 27 is embedded in the phase change material 26 for detecting the temperature of the phase change material 26, determining the heat remained in the phase change material 26, and judging whether a heat storage action is completed or whether the phase change material 26 needs to be heated according to the temperature in the phase change material 26.
  • the temperature detection structure 27 is a temperature sensitive package.
  • the water heater further includes a control device, which is communicated with the temperature detection structure 27 and the valve 22, and is configured to adjust the opening degree of the valve 22 according to the temperature detection structure 27.
  • the water heater further includes the control device, and the control device is communicated with the temperature detection structure 27 and the valve 22 so as to adjust the opening degree of the valve 22 according to the temperature detection structure 27, thereby controlling the heating speed of the outdoor unit 1 on the heat storage device 2.
  • a heating mode when the heat storage device 2 needs to be heated, the outdoor unit 1 starts to operate, and a high-temperature and high-pressure gaseous refrigerant enters the heat exchanger of the heat storage device 2 from the gas input pipe 20, condenses and releases heat in the heat storage device 2, then flows out from the liquid output pipe 21 and returns to the outdoor unit 1 after being throttled by the valve 22.
  • the temperature detection structure 27 detects the temperature of the phase change material 26. When the temperature of the phase change material 26 reaches a preset temperature, it indicates that the heat storage device 2 has completed the heat storage, and the opening degree of the valve 22 corresponding to the heat storage device 2 is reduced to a certain one. When all the heat storage devices 2 have completed the heat storage, the outdoor unit 1 stops operating.
  • a rapid heating mode when a specific heat storage device 2 needs to be heated rapidly, the compressor of the outdoor unit 1 operates at a high frequency, the opening degree of the valve 22 corresponding to this heat storage device 2 is set to the maximum, and the opening degrees of the valves 22 corresponding to other heat storage devices 2 are each reduced to a certain one, so that most of the refrigerant circulating in a system circulates in this heat storage device 2 to achieve the purpose of rapid heating.
  • the heat exchange flow path and the heat exchange water path are intersected.
  • the heat exchange flow path and the heat exchange water path are intersected, which improves the heat exchange efficiency, so that the heat transferred from the heat exchange flow path to the phase change material 26 can be quickly transferred to the heat exchange water path, so as to allow a cold water flowing through the heat exchange water path to be quickly heated, thus meeting a real-time water demand of the user.
  • the heat exchanger is a fin heat exchanger or a plate heat exchanger.
  • the heat exchanger is the fin heat exchanger or the plate heat exchanger, thereby improving the heat exchange efficiency of the heat exchanger.
  • a phase change temperature of the phase change material 26 is larger than or equal to 45°C and less than or equal to 80°C.
  • the phase change temperature of the phase change material 26 is larger than or equal to 45°C and less than or equal to 80°C.
  • the volume of the water heater provided by the present application is reduced by more than 45% in comparison with the water-storage heat-pump water heater.
  • the outdoor unit 1 further includes: a casing (not shown in the drawings) communicated with the heat exchange flow path through the gas input pipe 20 and the liquid output pipe 21; a compressor (not shown in the drawings) arranged in the casing and communicated with the gas input pipe 20; an evaporator (not shown in the drawings) arranged in the casing and communicated with the compressor and the liquid output pipe 21 respectively.
  • the compressor can compress the refrigerant and causes the refrigerant to flow from the compressor to the heat storage device 2 through the gas input pipe 20, and to flow from the liquid output pipe 21 to the compressor through the evaporator, so that the heat storage device 2 stores heat.
  • the outdoor unit 1 further includes the casing as well as the compressor and the evaporator arranged in the casing. Specifically, the compressor compresses the refrigerant, and the refrigerant is compressed into a high-temperature and high-pressure gaseous state in the compressor and then enters the heat storage device 2, flows from the liquid output pipe 21 to the evaporator after exchanging heat in the heat storage device 2, evaporates in the evaporator and then returns to the compressor. In the heat exchange flow path, the refrigerant exchanges heat with the phase change material 26, and the heat is stored in the heat storage device 2. After the heat exchange, the refrigerant flows back to the compressor from the heat storage device 2 through the liquid output pipe 21 and proceeds to the next cycle. In some embodiments, the outdoor unit 1 further includes a four-way valve, a condenser, a fan, a throttling element, and a control module.
  • the valve 22 is an electronic expansion valve.
  • the valve 22 is the electronic expansion valve, and the flow rate of the refrigerant passing through the heat storage device 2 can be controlled by controlling the opening degree of the electronic expansion valve, thereby controlling the heating speed on the heat storage device 2.
  • the water heater includes the outdoor unit 1 and two or more heat storage devices 2 with the phase change material 26 arranged therein.
  • the outdoor unit 1 includes the compressor, the evaporator, the condenser, the throttling part, the fan and the control module.
  • the compressor absorbs low-grade heat energy in the air during operation, for the heat storage of the heat storage device 2, and the heat is stored in the heat storage device 2.
  • the phase change material 26 is uniformly filled in the heat storage device 2, and has the phase change temperature of 45 ⁇ 80°C. Compared with the water-storage heat-pump water heater, the volume is reduced by more than 45%, under the premise of providing the same volume of hot water.
  • the heat exchanger is arranged in each heat storage device 2.
  • the heat exchanger may be a tube-fin heat exchanger or the plate heat exchanger or another structure.
  • the heat exchanger acts as a condenser during the heat storage process.
  • the heat exchange flow path and the heat exchange water path are arranged in the heat exchanger and intersected with each other.
  • Each heat storage device 2 is provided with the water input pipe 23 and the water output pipe 24, the water input pipe 23 and the water output pipe 24 are connected to the heat exchanger of the heat storage device 2, the cold water enters the heat storage device 2 from the water input pipe 23, passes through the heat exchanger and exchanges heat with the internal phase change material 26 to absorb heat, and the hot water with the raised temperature reaches a water terminal from the water output pipe 24.
  • the temperature sensitive package is arranged in the heat storage device 2, and the temperature sensitive package detects the temperature of the phase change material 26 in real time, and judges whether the heat storage device 2 has completed the heat storage.
  • the outdoor unit 1 is connected to the heat storage device 2 through a pipeline, and the heat exchanger in the heat storage device 2 is provided with the gas input pipe 20 and the liquid output pipe 21.
  • the liquid output pipe 21 is provided with the electronic expansion valve, for adjusting the flow rate of the refrigerant in each heat storage device 2 and controlling the heating speed of the outdoor unit 1 on the heat storage device 2.
  • a plurality of' means two or more than two.
  • the terms “installed”, “interconnected”, “connected” and “fixed” shall be broadly understood. For example, they may be fixed connections, or detachable connections or integrated connections; they may also be direct connections or indirect connections through intermediate medium.
  • installed may be fixed connections, or detachable connections or integrated connections; they may also be direct connections or indirect connections through intermediate medium.

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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)
  • Thermally Insulated Containers For Foods (AREA)
  • Cookers (AREA)
  • Resistance Heating (AREA)
EP20809390.6A 2019-05-22 2020-02-28 Chauffe-eau Pending EP3904782A4 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201920737073.7U CN209857384U (zh) 2019-05-22 2019-05-22 热水器
PCT/CN2020/077159 WO2020233186A1 (fr) 2019-05-22 2020-02-28 Chauffe-eau

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EP3904782A1 true EP3904782A1 (fr) 2021-11-03
EP3904782A4 EP3904782A4 (fr) 2022-03-02

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CN209857384U (zh) * 2019-05-22 2019-12-27 合肥美的暖通设备有限公司 热水器
CN111174357A (zh) * 2020-02-25 2020-05-19 广东志高暖通设备股份有限公司 单元式相变蓄热系统
CN113933336A (zh) * 2021-10-12 2022-01-14 珠海格力电器股份有限公司 相变材料测试组件、测试系统及控制方法

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JP3087745B2 (ja) * 1998-12-01 2000-09-11 ダイキン工業株式会社 冷凍装置
CN100347488C (zh) * 2004-03-12 2007-11-07 华南理工大学 相变蓄热热泵热水器
CN201652845U (zh) * 2010-04-06 2010-11-24 皇明太阳能股份有限公司 一种无水箱蓄热式平板太阳能热水器
WO2015198424A1 (fr) * 2014-06-25 2015-12-30 三菱電機株式会社 Appareil de pompe à chaleur
WO2017085812A1 (fr) * 2015-11-18 2017-05-26 三菱電機株式会社 Dispositif d'alimentation en eau chaude à pompe à chaleur
CN206890850U (zh) * 2017-06-30 2018-01-16 广东日出东方空气能有限公司 相变蓄热的空气源热泵热水器
CN108507198B (zh) * 2018-02-08 2019-10-11 常州大学 一种光热发电高温固体蓄热系统
CN108507170A (zh) * 2018-03-05 2018-09-07 珠海格力电器股份有限公司 热泵热水系统控制方法及装置
CN108954823B (zh) * 2018-06-07 2020-11-27 合肥美的暖通设备有限公司 相变蓄热式热泵热水器及其控制方法和装置、存储介质
CN111981684B (zh) * 2019-05-22 2022-02-22 合肥美的暖通设备有限公司 热水器、热水器的控制方法及存储介质
CN209857384U (zh) * 2019-05-22 2019-12-27 合肥美的暖通设备有限公司 热水器

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CN209857384U (zh) 2019-12-27
EP3904782A4 (fr) 2022-03-02
AU2020280443B2 (en) 2022-10-13
AU2020280443A1 (en) 2021-08-12

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