EP3249318B1 - Système d'eau potable à pompe à chaleur, son procédé de commande et dispositif d'eau potable à pompe à chaleur - Google Patents

Système d'eau potable à pompe à chaleur, son procédé de commande et dispositif d'eau potable à pompe à chaleur Download PDF

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Publication number
EP3249318B1
EP3249318B1 EP17171690.5A EP17171690A EP3249318B1 EP 3249318 B1 EP3249318 B1 EP 3249318B1 EP 17171690 A EP17171690 A EP 17171690A EP 3249318 B1 EP3249318 B1 EP 3249318B1
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EP
European Patent Office
Prior art keywords
heat
storage tank
compressor
water storage
condenser
Prior art date
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Application number
EP17171690.5A
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German (de)
English (en)
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EP3249318A1 (fr
Inventor
Bin Yin
Zhikang SHEN
Linjie Huang
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Sanhua Aweco Appliance Systems Wuhu Co Ltd
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Sanhua Aweco Appliance Systems Wuhu Co Ltd
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    • 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
    • F25B30/00—Heat pumps
    • F25B30/02—Heat pumps of the compression type
    • 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
    • F25B25/00—Machines, plants or systems, using a combination of modes of operation covered by two or more of the groups F25B1/00 - F25B23/00
    • F25B25/005—Machines, plants or systems, using a combination of modes of operation covered by two or more of the groups F25B1/00 - F25B23/00 using primary and secondary systems
    • 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
    • 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
    • F24H9/00—Details
    • F24H9/20—Arrangement or mounting of control or safety devices
    • F24H9/2007—Arrangement or mounting of control or safety devices for water 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
    • F25B29/00—Combined heating and refrigeration systems, e.g. operating alternately or simultaneously
    • F25B29/003—Combined heating and refrigeration systems, e.g. operating alternately or simultaneously of the compression type system
    • 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
    • F25B30/00—Heat pumps
    • F25B30/06—Heat pumps characterised by the source of low potential 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
    • F25B39/00—Evaporators; Condensers
    • F25B39/02—Evaporators
    • 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
    • F25B39/00—Evaporators; Condensers
    • F25B39/04—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
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/20—Disposition of valves, e.g. of on-off valves or flow control 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
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
    • F25B41/24—Arrangement of shut-off valves for disconnecting a part of the refrigerant cycle, e.g. an outdoor part
    • 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
    • F25B6/00—Compression machines, plants or systems, with several condenser circuits
    • F25B6/02—Compression machines, plants or systems, with several condenser circuits arranged in parallel
    • 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
    • F25B2600/00—Control issues
    • F25B2600/02—Compressor control
    • F25B2600/025—Compressor control by controlling speed
    • F25B2600/0251—Compressor control by controlling speed with on-off operation
    • 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
    • F25B2600/2507—Flow-diverting 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
    • F25B2600/00—Control issues
    • F25B2600/25—Control of valves
    • F25B2600/2519—On-off 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
    • F25B2700/2116—Temperatures of a condenser
    • F25B2700/21161—Temperatures of a condenser of the fluid heated by the condenser
    • 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
    • F25B2700/2117—Temperatures of an evaporator
    • F25B2700/21171—Temperatures of an evaporator of the fluid cooled by the evaporator

Definitions

  • the present disclosure relates to a technical field of drinking water device, and particularly, to a heat-pump drinking water system, a control method thereof, and a heat-pump drinking water device.
  • cold water and hot water are generally produced by two sets of drinking water devices, one set produces the hot water, and the other set produces the cold water.
  • the drinking water device used for producing the cold water adopts an evaporative refrigeration cycle
  • the drinking water device used for producing the hot water adopts an electrical heating.
  • the electrical heating has a large energy consumption, and the two sets of drinking water devices provide a complicated structure.
  • EP 2 821 732 discloses an air-conditioning and hot water supply system in an exhaust heat recovery system which includes an air-conditioning refrigerant circuit and a hot-water-supply refrigerant circuit performing hot water supply operation.
  • the air-conditioning and hot water supply system also includes an air-conditioning hot and cold water circuit that air-conditions the user's living space by exchanging heat with the air-conditioning refrigerant circuit, and a hot feed water circuit that supplies the user with hot water using the absorbed heat from the hot-water-supply refrigerant circuit.
  • the present invention seeks to solve one of the technical problems existing in the related art at least to some extent. Accordingly, a heat-pump drinking water system is provided by embodiments of the present disclosure.
  • the heat-pump drinking water system may produce hot water and cold water at the same time, and has a simple structure and a low energy consumption.
  • a heat-pump drinking water system according to the present invention is defined in claim 1.
  • a control method of the above heat-pump drinking water system according to the present invention is defined in claims 8 and 9, respectively, and is further provided by embodiments of the present invention.
  • a heat-pump drinking water device having the above heat-pump drinking water system is further provided by embodiments of the present invention.
  • the heat-pump drinking water system includes: a compressor, a main condenser, a throttling device and an evaporator connected end-to-end sequentially and configured to form a refrigerant circuit; an auxiliary condenser having a first end connected between an exhaust port of the compressor and the main condenser and a second end connected between the main condenser and the throttling device; a control valve assembly configured to control an exhausted gas of the compressor to flow through one of the main condenser and the auxiliary condenser selectively; a hot water storage tank and a cold water storage tank configured to store water, in which the hot water storage tank is connected with the main condenser for circulating heat exchange with the main condenser, and the cold water storage tank is connected with the evaporator for circulating heat exchange with the evaporator.
  • the hot water storage tank is connected to and exchanges heat circularly with the main condenser
  • the cold water storage tank is connected to and exchanges heat circularly with the evaporator.
  • the hot water and the cold water may be produced at the same time, the energy consumption is saved, and a high efficient utilization of energy is realized.
  • the auxiliary condenser by providing the auxiliary condenser, the cold water with a relative low temperature may be produced by the system and a stable operation of the system is ensured, so a high requirement for drinking water may be satisfied.
  • the control valve assembly includes a first on-off valve and a second on-off valve, the first on-off valve is connected with the main condenser in series and disposed adjacent to a refrigerant inlet of the main condenser, and the second on-off valve is connected with the auxiliary condenser in series and disposed adjacent to a refrigerant inlet of the auxiliary condenser.
  • the control valve assembly includes a three-way valve having a first valve port, a second valve port and a third valve port, the first valve port is connected with the exhaust port of the compressor, the second valve port is connected with a refrigerant inlet of the main condenser, the third valve port is connected with the first end of the auxiliary condenser, and the three-way valve is configured in such a manner that the first valve port is communicated with one of the second valve port and the third valve port and is cut off from the other one of the second valve port and the third valve port selectively.
  • the three-way valve is an electric three-way valve.
  • the heat-pump drinking water system further includes a heat-dissipation fan configured for heat dissipation of the auxiliary condenser.
  • the heat-pump drinking water system further includes a first one-way valve and a second one-way valve
  • the first one-way valve is connected with the main condenser in series and configured to allow a refrigerant to circulate only in a direction from a refrigerant outlet of the main condenser to the throttling device
  • the second one-way valve is connected with the auxiliary condenser in series and configured to allow the refrigerant to circulate only in a direction from the second end of the auxiliary condenser to the throttling device.
  • the heat-pump drinking water system further includes an electrical heater disposed in the hot water storage tank.
  • the control method of the above heat-pump drinking water system includes: detecting a water temperature Tm in the hot water storage tank and a water temperature Tn in the cold water storage tank; when Tm ⁇ T1 and Tn>T2, controlling by the control valve assembly the exhausted gas of the compressor to flow towards the main condenser, and forming the refrigerant circuit by the compressor, the main condenser, the throttling device and the evaporator, in which T1 is a first preset temperature and T2 is a second preset temperature; when Tm ⁇ T1 and Tn>T2, controlling by the control valve assembly the exhausted gas of the compressor to flow towards the auxiliary condenser, and forming the refrigerant circuit by the compressor, the auxiliary condenser, the throttling device and the evaporator; and when Tn ⁇ T2, stopping the compressor operating.
  • the control method of the above heat-pump drinking water system according to embodiments of the present invention is easy to be controlled and achieved.
  • the hot water and the cold water may be produced at the same time, the temperature of the cold water may reach a lower temperature, and the energy consumption saving may be realized better.
  • the control method of the above heat-pump drinking water system includes: detecting a water temperature Th in the hot water storage tank and a water temperature Tc in the cold water storage tank; when Th ⁇ T3 and Tc>T4, controlling by the control valve assembly the exhausted gas of the compressor to flow towards the main condenser, and forming the refrigerant circuit by the compressor, the main condenser, the throttling device and the evaporator, in which T3 is a third preset temperature and T4 is a fourth preset temperature; when T5>Th ⁇ T3 and Tc>T4, controlling by the control valve assembly the exhausted gas of the compressor to flow towards the auxiliary condenser, forming the refrigerant circuit by the compressor, the auxiliary condenser, the throttling device and the evaporator, and starting the electrical heater, in which T5 is a fifth preset temperature and T5>T3; when Th ⁇ T5 and Tc ⁇ T4, stopping the compressor operating, and starting
  • the control method of the above heat-pump drinking water system according to embodiments of the present invention is easy to be controlled and achieved. With the control method, it is convenient for the heat-pump drinking water system to start different operation modes according to the water temperatures in the hot water storage tank and in the cold water storage tank, the hot water and the cold water may be produced at the same time, and also the temperatures of the hot water and the cold water may reach a requirement for drinking water. Moreover, the energy consumption saving is realized better.
  • the heat-pump drinking water device includes: a cabinet; and a heat-pump drinking water system according to the first aspect of embodiments of the present disclosure, in which the heat-pump drinking water system is disposed in the cabinet.
  • the hot water and the cold water may be produced at the same time, the energy consumption is saved, and also, a higher requirement for drinking water is satisfied.
  • the cabinet has a first chamber, a second chamber and a third chamber arranged in an up and down direction, the hot water storage tank and the cold water storage tank are disposed in the first chamber, the main condenser and the evaporator are disposed in the second chamber, the compressor and the auxiliary condenser are disposed in the third chamber.
  • a plurality of' means two or more than two, unless specified otherwise.
  • the terms “mounted”, “connected”, “coupled”, “fixed” should be understood broadly, and may be, for example, fixed connections, detachable connections, or integral connections; may also be direct connections or indirect connections via intervening structures; may also be inner communications or interaction relationships of two elements, unless specified or limited otherwise, which can be understood by those skilled in the art according to specific situations.
  • a heat-pump drinking water system 100 according to embodiments of the present invention is described in the following with reference to Fig. 1 to Fig. 8 .
  • the heat-pump drinking water system 100 includes a compressor 10, a main condenser 11, a throttling device 12, an evaporator 13, an auxiliary condenser 14, a control valve assembly, a hot water storage tank 16 and a cold water storage tank 17 configured to store water.
  • the compressor 10, the main condenser 11, the throttling device 12 and the evaporator 13 are connected end-to-end sequentially and are configured to form a refrigerant circuit.
  • the hot water storage tank 16 is connected with the main condenser 11 for circulating heat exchange with the main condenser 11, such that the water in the hot water storage tank 16 may exchange heat with the main condenser 11, thus increasing a water temperature in the hot water storage tank 16.
  • the cold water storage tank 17 is connected with the evaporator 13 for circulating heat exchange with the evaporator 13, such that the water in the cold water storage tank 17 may exchange heat with the evaporator 13, thus decreasing a water temperature in the cold water storage tank 17. Therefore, the hot water and the cold water may be produced at the same time, the energy may be made full use of, and the energy consumption may be saved.
  • the evaporator 13, the main condenser 11 and the auxiliary condenser 14 may be configured to be a plate heat exchanger or a double-pipe heat exchanger; the throttling device 12 may be configured to be an electronic expansion valve, a thermostatic expansion valve or a capillary tube; the auxiliary condenser 14 may be configured to be a micro-channel heat exchanger or a finned tube heat exchanger; and the compressor 10 may be configured to be a vertical compressor or a horizontal compressor.
  • the auxiliary condenser 14 has a first end connected between an exhaust port of the compressor 10 and the main condenser 11 and a second end connected between the main condenser 11 and the throttling device 12.
  • the control valve assembly controls an exhausted gas of the compressor 10 to flow through one of the main condenser 11 and the auxiliary condenser 14 selectively. That is, during an operation process of the compressor 10, the control valve assembly controls the compressor 10 to be communicated with one of the main condenser 11 and the auxiliary condenser 14.
  • the compressor 10 when the compressor 10 is communicated with the main condenser 11, the compressor 10 is cut off from the auxiliary condenser 14, and thus the compressor 10, the main condenser 11, the throttling device 12 and the evaporator 13 form the refrigerant circuit. Therefore, the refrigerant is compressed by the compressor 10 into a refrigerant with a high temperature and a high pressure, and the refrigerant with the high temperature and the high pressure is exhausted into the main condenser 11 through the exhaust port of the compressor 10. The refrigerant with the high temperature and the high pressure is condensed and releases heat in the main condenser 11.
  • the refrigerant is throttled and depressurized by the throttling device 12 after flowing out of the main condenser 11, and then flows into the evaporator 13.
  • the refrigerant is evaporated and absorbs heat in the evaporator 13 to form a refrigerant with a low temperature and a low pressure.
  • the refrigerant with the low temperature and the low pressure flows out of the evaporator 13, and then flows back into the compressor 10 through a gas returning port of the compressor 10, so as to be compressed again, thus forming a refrigerant cycle.
  • the water flowing out of the hot water storage tank 16 may exchange heat with the main condenser 11, absorb the heat radiated from the main condenser 11, and then flow back into the hot water storage tank 16 after the heat exchange with the main condenser 11, repeated in this way, thus increasing the water temperature in the hot water storage tank 16.
  • the water flowing out of the cold water storage tank 17 may exchange heat with the evaporator 13, the refrigerant in the evaporator 13 absorbs the heat radiated from the water flowing out of the cold water storage tank 17 when being evaporated, and then the water flows back into the cold water storage tank 17 after the heat exchange with the evaporator 13, repeated in this way, thus reducing the water temperature in the cold water storage tank 17.
  • the compressor 10 when the compressor 10 is communicated with the auxiliary condenser 14, the compressor 10 is cut off from the main condenser 11, and the compressor 10, the auxiliary condenser 14, the throttling device 12 and the evaporator 13 form the refrigerant circuit.
  • the refrigerant is compressed by the compressor 10 into a refrigerant with a high temperature and a high pressure, and the refrigerant with the high temperature and the high pressure is exhausted into the auxiliary condenser 14 through the exhaust port of the compressor 10.
  • the refrigerant with the high temperature and the high pressure is condensed and releases heat in the auxiliary condenser 14.
  • the refrigerant is throttled and depressurized by the throttling device 12 after flowing out of the auxiliary condenser 14, and then flows into the evaporator 13.
  • the refrigerant is evaporated and absorbs heat in the evaporator 13 to form a refrigerant with a low temperature and a low pressure, and the refrigerant with the low temperature and the low pressure flows back into the compressor 10 through the gas returning port of the compressor 10 after flowing out of the evaporator 13, so as to be compressed again, thus forming a refrigerant cycle.
  • the water flowing out of the cold water storage tank 17 may exchange heat with the evaporator 13, and the refrigerant in the evaporator 13 absorbs the heat radiated from the water flowing out of the cold water storage tank 17 when being evaporated, so the water temperature in the cold water storage tank 17 may be reduced.
  • the water in the hot water storage tank 16 needs to be heated and the water in the cold water storage tank 17 needs to be cooled, so the compressor 10 is communicated with the main condenser 11 and cut off from the auxiliary condenser 14 at this moment.
  • the water temperature in the hot water storage tank 16 may be increased, and also, with the water in the cold water storage tank 17 exchanging heat with the evaporator 13, the water temperature in the cold water storage tank 17 may be decreased.
  • the water temperature in the hot water storage tank 16 increases gradually, and the water temperature in the cold water storage tank 17 decreases gradually. Because of characteristics of the heat-pump drinking water system, a condensation temperature cannot be too high, so the water temperature in the hot water storage tank 16 will not increase infinitely, and the water temperature in the cold water storage tank 17 will not continue decreasing.
  • the compressor 10 may be cut off from the main condenser 11 and communicated with the auxiliary condenser 14, and thus the compressor 10, the auxiliary condenser 14, the throttling device 12 and the evaporator 13 form the refrigerant circuit.
  • the water in the cold water storage tank 17 may be continued being cooled, so as to allow the water in the cold water storage tank 17 to reach a lower temperature.
  • the hot water and the cold water may be produced at the same time, and the energy consumption is saved. Also, the water temperature of the cold water may be lowered further by providing the auxiliary condenser 14, and thus a higher requirement for drinking water is satisfied.
  • the hot water and the cold water produced by the heat-pump drinking water system 100 reach set temperatures of the drinking water, the user may take water from the hot water storage tank 16 and the cold water storage tank 17.
  • the hot water storage tank 16 and the cold water storage tank 17 may be supplemented with water.
  • the hot water storage tank 16 is connected to and exchanges heat circularly with the main condenser 11, and the cold water storage tank 17 is connected to and exchanges heat circularly with the evaporator 13, such that the hot water and the cold water may be produced at the same time.
  • the auxiliary condenser 14 By providing the auxiliary condenser 14, the cold water with a lower temperature may be produced by the system and a stable operation of the system is ensured, so a higher requirement for drinking water is satisfied.
  • the control valve assembly includes a first on-off valve 21 and a second on-off valve 22.
  • the first on-off valve 21 is connected with the main condenser 11 in series and disposed adjacent to a refrigerant inlet of the main condenser 11
  • the second on-off valve 22 is connected with the auxiliary condenser 14 in series and disposed adjacent to a refrigerant inlet of the auxiliary condenser 14.
  • the compressor 10 when the first on-off valve 21 is on and the second on-off valve 22 is off, the compressor 10 is communicated with the main condenser 11 and cut off from the auxiliary condenser 14, and thus the compressor 10, the main condenser 11, the throttling device 12 and the evaporator 13 form the refrigerant circuit; when the second on-off valve 22 is on and the first on-off valve 21 is off, the compressor 10 is communicated with the auxiliary condenser 14 and cut off from the main condenser 11, and thus the compressor 10, the auxiliary condenser 14, the throttling device 12 and the evaporator 13 form the refrigerant circuit. Please refer to what is mentioned above for a specific operation process, which will not be repeated in detail here.
  • the heat-pump drinking water system 100 may further include a heat-dissipation fan 15 configured for heat dissipation of the auxiliary condenser 14, so the heat radiated from the auxiliary condenser 14 may be dissipated timely, thus improving an operation efficiency of the system.
  • a heat-dissipation fan 15 configured for heat dissipation of the auxiliary condenser 14, so the heat radiated from the auxiliary condenser 14 may be dissipated timely, thus improving an operation efficiency of the system.
  • the heat-pump drinking water system 100 may further include a first one-way valve 41 and a second one-way valve 42.
  • the first one-way valve 41 is connected with the main condenser 11 in series and configured to allow the refrigerant to circulate only in a direction from a refrigerant outlet of the main condenser 11 to the throttling device 12, thus preventing the refrigerant from backflow.
  • the second one-way valve 42 is connected with the auxiliary condenser 14 in series and configured to allow the refrigerant to circulate only in a direction from the second end of the auxiliary condenser 14 to the throttling device 12, thus preventing the refrigerant from backflow.
  • the heat-pump drinking water system 100 may further include a first water pump 18 and a second water pump 19.
  • the first water pump 18 is connected between the hot water storage tank 16 and the main condenser 11.
  • the first water pump 18 is used for drawing the water out of the hot water storage tank 16 to exchange heat with the main condenser 11 and pumping the water into the hot water storage tank 16 after the heat exchange, so that the water in the hot water storage tank 16 may exchange heat with the main condenser 11 repeatedly, and a flow cycle of the water is accelerated, thus improving the heat exchange efficiency.
  • the second water pump 19 is connected between the cold water storage tank 17 and the evaporator 13.
  • the second water pump 19 is used for drawing the water out of the cold water storage tank 17 to exchange heat with the evaporator 13 and pumping the water into the cold water storage tank 17 after the heat exchange, so that the water in the cold water storage tank 17 may exchange heat with the evaporator 13 repeatedly, and the flow cycle of the water is accelerated, thus improving the heat exchange efficiency.
  • the hot water storage tank 16 is further provided with an electrical heater 161 used for heating therein.
  • the electrical heater 161 may be used to heat the water so as to further increase the water temperature, so that the water temperature in the hot water storage tank 16 may reach a higher temperature.
  • the water temperature in the hot water storage tank 16 reaches a set heating temperature of the heat-pump drinking water system. At this time, the water temperature in the hot water storage tank 16 has a small difference from the temperature of the main condenser 11, and the heat exchange cannot be performed. However, the water temperature in the cold water storage tank 17 has not reached a set drinking temperature of cold water, so the water in the cold water storage tank 17 needs to be cooled further.
  • the control valve assembly may control the exhausted gas of the compressor 10 to flow through the auxiliary condenser 14, that is, the compressor 10 is communicated with the auxiliary condenser 14 and cut off from the main condenser 11, and thus the compressor 10, the auxiliary condenser 14, the throttling device 12 and the evaporator 13 form the refrigerant circuit.
  • the water in the cold water storage tank 17 may continue exchanging heat with the evaporator 13, so that the water temperature in the cold water storage tank 17 may be reduced further, and thus the water temperature in the cold water storage tank 17 may reach a lower temperature.
  • the compressor 10 stops operating.
  • the water in the hot water storage tank 16 may be heated by the electrical heater 161, so that the water temperature in the hot water storage tank 16 may be increased to a higher temperature, for example a set drinking temperature of hot water.
  • the water temperature in the cold water storage tank 17 reaches the set drinking temperature of the cold water, while the water temperature in the hot water storage tank 16 has not reached a set heating temperature of the heat-pump drinking water system.
  • the compressor 10 stops operating.
  • the water in the hot water storage tank 16 may be heated by the electrical heater 161, so as to increase the water temperature in the hot water storage tank 16 to the set drinking temperature of the hot water.
  • the heat-pump drinking water system 100 in the present embodiment differs from the heat-pump drinking water system 100 in above embodiment one only in configurations of the control valve assembly, and other structures of these two heat-pump drinking water systems 100 are substantially same, which will not be repeated in detail here.
  • the control valve assembly includes a three-way valve 30.
  • the three-way valve 30 has a first valve port 31, a second valve port 32 and a third valve port 33.
  • the first valve port 31 is connected with the exhaust port of the compressor 10, the second valve port 32 is connected with a refrigerant inlet of the main condenser 11, and the third valve port 33 is connected with the first end of the auxiliary condenser 14.
  • the three-way valve 30 is configured in such a manner that the first valve port 31 is communicated with one of the second valve port 32 and the third valve port 33 and is cut off from the other one of the second valve port 32 and the third valve port 33 selectively.
  • the compressor 10 is communicated with the main condenser 11 and cut off from the auxiliary condenser 14, and thus the compressor 10, the main condenser 11, the throttling device 12 and the evaporator 13 form the refrigerant circuit.
  • the compressor 10 is communicated with the auxiliary condenser 14 and cut off from the main condenser 11, and thus the compressor 10, the auxiliary condenser 14, the throttling device 12 and the evaporator 13 form the refrigerant circuit.
  • the three-way valve 30 may be an electric three-way valve.
  • a control method of the above heat-pump drinking water system 100 in which the hot water storage tank 16 is not provided with the electrical heater 161 therein.
  • the control method includes: detecting a water temperature Tm in the hot water storage tank 16 and a water temperature Tn in the cold water storage tank 17, and comparing the water temperature Tm and the water temperature Tn with preset temperatures.
  • the compassion results may include several cases as followed.
  • the control valve assembly controls the exhausted gas of the compressor 10 to flow towards the main condenser 11, and the compressor 10, the main condenser 11, the throttling device 12 and the evaporator 13 form the refrigerant circuit.
  • the water in the hot water storage tank 16 may exchange heat with the main condenser 11, and thus the water temperature in the hot water storage tank 16 may be increased.
  • the water in the cold water storage tank 17 may exchange heat with the evaporator 13, and thus the water temperature in the cold water storage tank 17 may be reduced.
  • T1 is a first preset temperature, for example T1 is a set drinking temperature of hot water
  • T2 is a second preset temperature, for example T2 is a set drinking temperature of cold water.
  • the control valve assembly controls the exhausted gas of the compressor 10 to flow towards the auxiliary condenser 14, and the compressor 10, the auxiliary condenser 14, the throttling device 12 and the evaporator 13 form the refrigerant circuit.
  • the water in the cold water storage tank 17 may exchange heat with the evaporator 13, thus reducing the water temperature in the cold water storage tank 17 further.
  • the control method of the heat-pump drinking water system 100 is easy to be controlled and achieved.
  • the hot water and the cold water may be produced at the same time, the temperature of the cold water may reach a lower temperature, and also, the energy consumption saving may be realized better.
  • the control method of the above heat-pump drinking water system 100 is provided, in which the hot water storage tank 16 is provided with the electrical heater 161 therein.
  • the control method includes: detecting a water temperature Th in the hot water storage tank 16 and a water temperature Tc in the cold water storage tank 17, and comparing the water temperature Th and the water temperature Tc with preset temperatures.
  • the comparison results may include several cases as followed.
  • the control valve assembly controls the exhausted gas of the compressor 10 to flow towards the main condenser 11, and the compressor 10, the main condenser 11, the throttling device 12 and the evaporator 13 form the refrigerant circuit.
  • the water in the hot water storage tank 16 may exchange heat with the main condenser 11, thus increasing the water temperature in the hot water storage tank 16.
  • the water in the cold water storage tank 17 may exchange heat with the evaporator 13, thus reducing the water temperature in the cold water storage tank 17.
  • T3 is a third preset temperature, for example T3 is a set heating temperature of the heat-pump drinking water system.
  • T4 is a fourth preset temperature, for example T4 is a set drinking temperature of cold water.
  • the control valve assembly controls the exhausted gas of the compressor 10 to flow towards the auxiliary condenser 14, the compressor 10, the auxiliary condenser 14, the throttling device 12 and the evaporator 13 form the refrigerant circuit, and the electrical heater 161 is started.
  • the water in the cold water storage tank 17 may exchange heat with the evaporator 13, thus reducing the water temperature in the cold water storage tank 17 further; the water in the hot water storage tank 16 is heated further by the electrical heater 161.
  • T5 is a fifth preset temperature and T5>T3, for example T5 is a set drinking temperature of hot water.
  • the preset temperatures T3, T4 and T5 may be determined according to actual situations. For example, for a conventional refrigerant, T3 is about 55°C, and for some refrigerants such as carbon dioxide, T3 may reach 90°C. T4 may be set between 1°C and 5°C, and T5 may be set between 80°C and 100°C.
  • the control method of the heat-pump drinking water system 100 is easy to be controlled and achieved. With the control method, it is convenient for the heat-pump drinking water system 100 to start different operation modes according to the water temperatures in the hot water storage tank 16 and in the cold water storage tank 17, such that the hot water and the cold water may be produced at the same time, and also, the temperatures of the hot water and of the cold water may satisfy drinking requirements, thus realizing the energy consumption saving better.
  • a heat-pump drinking water device 200 according to embodiments of the present invention will be described with reference to Fig. 8 .
  • the heat-pump drinking water device 200 includes: a cabinet 201 and the heat-pump drinking water system 100 according to the first aspect of embodiments of the present invention, and the heat-pump drinking water system 100 is disposed in the cabinet 201.
  • the heat-pump drinking water device 200 may produce hot water and cold water at the same time, and also satisfy higher requirements for drinking water. In addition, the energy consumption is saved.
  • the cabinet 201 has a first chamber 202, a second chamber 203 and a third chamber 204 arranged in an up and down direction.
  • the hot water storage tank 16 and the cold water storage tank 17 are disposed in the first chamber 202
  • the main condenser 11 and the evaporator 13 are disposed in the second chamber 203
  • the compressor 10 and the auxiliary condenser 14 are disposed in the third chamber 204.
  • the hot water storage tank 16 and the cold water storage tank 17 are spaced apart from each other along a left and right direction
  • the main condenser 11 and the evaporator 13 are spaced apart from each other along the left and right direction
  • the compressor 10 and the auxiliary condenser 14 are spaced apart from each other along the left and right direction.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)

Claims (11)

  1. Système d'eau potable à pompe à chaleur (100), comprenant :
    un compresseur (10), un condenseur principal (11), un dispositif d'étranglement (12) et un évaporateur (13) connectés bout à bout de manière séquentielle et configurés pour former un circuit de réfrigérant ;
    un condenseur auxiliaire (14) ayant une première extrémité connectée entre un orifice d'évacuation du compresseur (10) et le condenseur principal (11) et une seconde extrémité connectée entre le condenseur principal (11) et le dispositif d'étranglement (12) ;
    un ensemble de vannes de commande configuré pour commander un gaz d'évacuation du compresseur (10) pour qu'il s'écoule à travers l'un du condenseur principal (11) et du condenseur auxiliaire (14) de manière sélective ; et
    un réservoir de stockage d'eau chaude (16) et un réservoir de stockage d'eau froide (17) configurés pour stocker de l'eau, dans lequel le réservoir de stockage d'eau chaude (16) est connecté au condenseur principal (11) pour faire circuler l'échange de chaleur avec le condenseur principal (11), et le réservoir de stockage d'eau froide (17) est connecté à l'évaporateur (13) pour faire circuler l'échange de chaleur avec l'évaporateur (13).
  2. Système d'eau potable à pompe à chaleur (100) selon la revendication 1, dans lequel l'ensemble de vannes de commande comprend une première vanne tout-ou-rien (21) et une seconde vanne tout-ou-rien (22), la première vanne tout-ou-rien (21) est connectée au condenseur principal (11) en série et disposée de manière adjacente à une entrée de réfrigérant du condenseur principal (11), et la seconde vanne tout-ou-rien (22) est connectée au condenseur auxiliaire (14) en série et disposée de manière adjacente à une entrée de réfrigérant du condenseur auxiliaire (14).
  3. Système d'eau potable à pompe à chaleur (100) selon la revendication 1, dans lequel l'ensemble de vannes de commande comprend une vanne à trois voies (30) ayant un premier orifice de vanne (31), un deuxième orifice de vanne (32) et un troisième orifice de vanne (33), le premier orifice de vanne (31) est connecté à l'orifice d'évacuation du compresseur (10), le deuxième orifice de vanne (32) est connecté à une entrée de réfrigérant du condenseur principal (11), le troisième orifice de vanne (33) est connecté à la première extrémité du condenseur auxiliaire (14), et la vanne à trois voies (30) est configurée de telle manière que le premier orifice de vanne (31) est en communication avec l'un du deuxième orifice de vanne (32) et du troisième orifice de vanne (33) et est isolé de l'autre du deuxième orifice de vanne (32) et du troisième orifice de vanne (33) sélectivement.
  4. Système d'eau potable à pompe à chaleur (100) selon la revendication 3, dans lequel la vanne à trois voies (30) est une vanne électrique à trois voies.
  5. Système d'eau potable à pompe à chaleur (100) selon la revendication 1, comprenant en outre un ventilateur de dissipation de chaleur (15) configuré pour la dissipation de chaleur du condenseur auxiliaire (14).
  6. Système d'eau potable à pompe à chaleur (100) selon la revendication 1, comprenant en outre une première vanne unidirectionnelle (41) et une seconde vanne unidirectionnelle (42), dans lequel la première vanne unidirectionnelle (41) est connectée au condenseur principal (11) en série et configurée pour permettre à un réfrigérant de circuler uniquement dans une direction allant d'une sortie de réfrigérant du condenseur principal (11) au dispositif d'étranglement (12), et la seconde vanne unidirectionnelle (42) est connectée au condenseur auxiliaire (14) en série et configurée pour permettre au réfrigérant de circuler uniquement dans une direction allant de la seconde extrémité du condenseur auxiliaire (14) au dispositif d'étranglement (12) .
  7. Système d'eau potable à pompe à chaleur (100) selon l'une quelconque des revendications 1 à 6, comprenant en outre un élément chauffant électrique (161) disposé dans le réservoir de stockage d'eau chaude (16).
  8. Procédé de commande d'un système d'eau potable à pompe à chaleur selon l'une quelconque des revendications 1 à 6, comprenant de :
    détecter une température d'eau Tm dans le réservoir de stockage d'eau chaude et une température d'eau Tn dans le réservoir de stockage d'eau froide ;
    lorsque Tm < T1 et Tn > T2, commander, par l'ensemble de vannes de commande, un gaz évacué du compresseur pour qu'il s'écoule vers le condenseur principal, et former le circuit de réfrigérant par le compresseur, le condenseur principal, le dispositif d'étranglement et l'évaporateur, dans lequel T1 est une première température prédéfinie et T2 est une seconde température prédéfinie ;
    lorsque Tm ≥ T1 et Tn > T2, commander, par l'ensemble de vannes de commande, le gaz évacué du compresseur pour qu'il s'écoule vers le condenseur auxiliaire, et former le circuit de réfrigérant par le compresseur, le condenseur auxiliaire, le dispositif d'étranglement et l'évaporateur ; et
    lorsque Tn ≤ T2, arrêter le fonctionnement du compresseur.
  9. Procédé de commande d'un système d'eau potable à pompe à chaleur selon la revendication 7, comprenant de :
    détecter une température d'eau Th dans le réservoir de stockage d'eau chaude et une température d'eau Tc dans le réservoir de stockage d'eau froide ;
    lorsque Th < T3 et Tc > T4, commander, par l'ensemble de vannes de commande, le gaz évacué du compresseur pour qu'il s'écoule vers le condenseur principal, et former le circuit de réfrigérant par le compresseur, le condenseur principal, le dispositif d'étranglement et l'évaporateur, dans lequel T3 est une troisième température prédéfinie et T4 est une quatrième température prédéfinie ;
    lorsque T5 > Th ≥ T3 et Tc > T4, commander, par l'ensemble de vannes de commande, le gaz évacué du compresseur pour qu'il s'écoule vers le condenseur auxiliaire, former le circuit de réfrigérant par le compresseur, le condenseur auxiliaire, le dispositif d'étranglement et l'évaporateur, et démarrer l'élément chauffant électrique, dans lequel T5 est une cinquième température prédéfinie et T5 > T3 ;
    lorsque Th < T5 et Tc ≤ T4, arrêter le fonctionnement du compresseur, et démarrer l'élément chauffant électrique ; et
    lorsque Th ≥ T5 et Tc ≤ T4, arrêter le fonctionnement à la fois du compresseur et de l'élément chauffant électrique.
  10. Dispositif d'eau potable à pompe à chaleur (200), comprenant :
    une armoire (201) ; et
    un système d'eau potable à pompe à chaleur (100) selon l'une quelconque des revendications 1 à 7, dans lequel le système d'eau potable à pompe à chaleur (100) est disposé dans l'armoire (201) .
  11. Dispositif d'eau potable à pompe à chaleur (200) selon la revendication 10, dans lequel l'armoire (201) définit une première chambre (202), une deuxième chambre (203) et une troisième chambre (204) disposées dans une direction verticale, le réservoir de stockage d'eau chaude (16) et le réservoir de stockage d'eau froide (17) sont disposés dans la première chambre (202), le condenseur principal (11) et l'évaporateur (13) sont disposés dans la deuxième chambre (203), et le compresseur (10) et le condenseur auxiliaire (14) sont disposés dans la troisième chambre (204).
EP17171690.5A 2016-05-23 2017-05-18 Système d'eau potable à pompe à chaleur, son procédé de commande et dispositif d'eau potable à pompe à chaleur Active EP3249318B1 (fr)

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CN108007001A (zh) * 2017-12-29 2018-05-08 扬州海通电子科技有限公司 一种车载移动式恒温液冷源装置
CN107990610A (zh) * 2018-01-18 2018-05-04 河南中瑞制冷科技有限公司 一种工业水温双控系统
CN108759226A (zh) * 2018-04-23 2018-11-06 江苏科技大学 一种双温水制备系统及其工作方法
CN108814290A (zh) * 2018-08-17 2018-11-16 广东工业大学 一种饮用水处理设备
CN109737625B (zh) * 2019-03-04 2023-07-25 珠海格力电器股份有限公司 一种热泵系统、控制方法和热泵干燥装置
CN110285398A (zh) * 2019-07-04 2019-09-27 中山大学 聚光光伏与蒸汽压缩循环的新型热电联产系统
CN110486940A (zh) * 2019-08-21 2019-11-22 河南科技大学 一种利用空气能的开水炉
CN110486941A (zh) * 2019-08-21 2019-11-22 河南科技大学 一种空气源热泵型开水器及其制冷制热方法
CN114158917A (zh) * 2021-11-30 2022-03-11 佛山市顺德区美的饮水机制造有限公司 饮水设备
WO2023229939A1 (fr) * 2022-05-23 2023-11-30 Rheem Manufacturing Company Systèmes de pompe à chaleur pour unité de lavage des mains et/ou unité de remplissage de bouteilles

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