EP3722689A1 - Control system for adjusting air temperature, humidity and water temperature by an outdoor air heat exchanger - Google Patents

Control system for adjusting air temperature, humidity and water temperature by an outdoor air heat exchanger Download PDF

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Publication number
EP3722689A1
EP3722689A1 EP19185986.7A EP19185986A EP3722689A1 EP 3722689 A1 EP3722689 A1 EP 3722689A1 EP 19185986 A EP19185986 A EP 19185986A EP 3722689 A1 EP3722689 A1 EP 3722689A1
Authority
EP
European Patent Office
Prior art keywords
heat exchanger
way valve
outdoor air
refrigerant
water
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
EP19185986.7A
Other languages
German (de)
English (en)
French (fr)
Inventor
Siu Lok TUNG
Yuen Ha LUN
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.)
Sustainable Energy Ltd
Original Assignee
Sustainable Energy 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 Sustainable Energy Ltd filed Critical Sustainable Energy Ltd
Publication of EP3722689A1 publication Critical patent/EP3722689A1/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0003—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station characterised by a split arrangement, wherein parts of the air-conditioning system, e.g. evaporator and condenser, are in separately located units
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F24F11/46—Improving electric energy efficiency or saving
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/30—Arrangement or mounting of heat-exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
    • F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
    • F24F5/001—Compression cycle 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
    • F25B13/00—Compression machines, plants or systems, with reversible cycle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00—Fluid-circulation arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/87—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling absorption or discharge of heat in outdoor units
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/10—Temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/20—Humidity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2221/00—Details or features not otherwise provided for
    • F24F2221/08—Installation or apparatus for use in sport halls, e.g. swimming pools, ice rings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2221/00—Details or features not otherwise provided for
    • F24F2221/54—Heating and cooling, simultaneously or alternatively
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/003—Indoor unit with water as a heat sink or heat source
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/023—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units
    • F25B2313/0233—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units in parallel arrangements
    • F25B2313/02333—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units in parallel arrangements during dehumidification
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/023—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units
    • F25B2313/0234—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units in series arrangements
    • F25B2313/02343—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units in series arrangements during dehumidification

Definitions

  • the present invention relates to the field of air conditioning and energy utilization, particularly to a two-way circulation control system with an outdoor air heat exchanger.
  • the indoor air conditioning mostly uses an evaporator.
  • the refrigerating coil in the evaporator dehumidifies and cools indoor gas in high humidity or indoor gas mixed with outdoor gas, and transfers the heat absorbed at the refrigerating coil to a heating coil to reheat the cooled air, which returns to the indoor space as dehumidified air.
  • refrigerant cyclically recovers latent heat and reheats cold air, which is then supplied to the indoor space.
  • the heat absorbed at the refrigerating coil in the evaporator may also be led to a water heat exchange apparatus to heat water in a building or water in a swimming pool.
  • an outdoor air heat exchanger may be used to reject heat and release surplus heat recovered in a dehumidifying process.
  • the present invention intends to provide to a control system for adjusting air temperature, humidity and water temperature by an outdoor air heat exchanger.
  • a technical means adopted by the present invention is as follows.
  • the present invention provides a control system for adjusting air temperature, humidity and water temperature by an outdoor air heat exchanger, comprising an air conditioning apparatus, a heat exchange apparatus and an outdoor air heat exchanger;
  • the air conditioning apparatus comprises in turn: a gas recovery apparatus, a gas refrigerating and dehumidifying apparatus, a gas supply apparatus and a compressor unit;
  • the gas refrigerating and dehumidifying apparatus and the compressor unit are connected in series to a first heat exchange apparatus to form a refrigerant system;
  • the outdoor air heat exchanger is connected in parallel to the refrigerant system;
  • the control system is enabled when indoor humidity is lower than a set value, i.e.: when indoor humidity is lower than a set value and water temperature and/or room temperature is lower than a set value, a heat absorption mode of the outdoor air heat exchanger will be enabled, refrigerant in the outdoor air heat exchanger will be inputted to the compressor unit via the outdoor air heat exchanger, the refrigerant in the compressor unit will be converted
  • a heat dissipation mode of the outdoor air heat exchanger When indoor humidity is lower than a set value and water temperature and/or room temperature is higher than a set value, a heat dissipation mode of the outdoor air heat exchanger will be enabled, the refrigerant in the outdoor air heat exchanger will perform heat dissipation by outdoor air, and the refrigerant after heat dissipation will be inputted to the heat exchange apparatus and reduce water temperature and/or room temperature via the first heat exchange apparatus.
  • a mode of dehumidifying heat pump When indoor humidity is higher than a set value and water temperature and/or room temperature is lower than a set value, a mode of dehumidifying heat pump will be enabled, the refrigerant will absorb heat via the gas refrigerating and dehumidifying apparatus and then be inputted to the compressor unit and converted into a heating medium in the compressor unit, and the heating medium will be inputted to the heat exchange apparatus and raise water temperature and/or room temperature via the first heat exchange apparatus.
  • a mode of dehumidifying heat pump When indoor humidity is higher than a set value, water temperature and/or room temperature is higher than a set value, a mode of dehumidifying heat pump will be enabled, the refrigerant will reduce water temperature and/or room temperature via the first heat exchange apparatus and/or the gas refrigerating and dehumidifying apparatus, the refrigerant after heat absorption will be inputted to the compressor unit, the refrigerant in the compressor unit will be converted into a heating medium, and the heating medium will be inputted to the outdoor air heat exchanger for heat dissipation by outdoor air.
  • the first heat exchange apparatus is a gas reheating apparatus arranged inside an air conditioning apparatus; the refrigerant system is connected in parallel to a second heat exchanger, which is connected to a water system or a water tower.
  • the control system further comprises a first three-way valve, a second three-way valve, a four-way valve and a liquid storage tank;
  • the compressor unit is connected to an inlet of the first three-way valve, and an outlet 1 of the first three-way valve is connected to an inlet of the gas reheating apparatus;
  • an outlet 2 of the first three-way valve is connected to an inlet of the four-way valve, and the four-way valve comprises a first outlet, a second outlet and a third outlet in turn;
  • the first outlet of the four-way valve is connected to an outdoor air heat exchanger, the second outlet of the four-way valve is connected to a compressor, and the third outlet of the four-way valve is connected to a water heat exchange apparatus;
  • the other ends of the outdoor air heat exchanger, the gas reheating apparatus and the second heat exchanger are connected to the liquid storage tank respectively;
  • the liquid storage tank is connected to an inlet of a second three-way valve, an outlet 1 of the second three-way valve is connected to a
  • a refrigerant filter is arranged between the liquid storage tank and the second three-way valve.
  • an inlet-end outdoor exhaust fan is arranged at the gas recovery apparatus.
  • the present invention further provides the following few advanced solutions:
  • the air conditioning apparatus is provided with a water cooling system before or after air treatment of the refrigerant system.
  • the air conditioning apparatus is provided with a water heating system before or after air treatment of the refrigerant system.
  • the air conditioning apparatus is provided with a water cooling system before air treatment of the refrigerant system, and is provided with a water heating system after air treatment of the refrigerant system.
  • the second heat exchanger is connected in series to a third heat exchanger, and the third heat exchanger is connected to chilled water.
  • the air conditioning apparatus is provided with a water cooling system before air treatment of the refrigerant system, a third three-way valve is arranged at an inlet of the water cooling system, and an outlet 2 of the third three-way valve is connected to an inlet of the third heat exchanger; a fourth three-way valve is arranged at the inlet of the third heat exchanger, the outlet 2 of the third three-way valve is connected to an inlet of the fourth three-way valve, and an outlet 2 of the fourth three-way valve is connected to chilled water.
  • the present invention discloses various types of indoor refrigerant systems connected in parallel to an outdoor air heat exchanger.
  • the indoor refrigerant system will perform dehumidification and cooling and use absorbed heat to adjust indoor air and indoor water systems (e.g., swimming pool or bath water).
  • indoor air and indoor water systems e.g., swimming pool or bath water.
  • surplus heat recovered in a dehumidifying process will be removed through an outdoor air heat exchanger.
  • recovered latent heat is restricted.
  • a "reverse circulation" system runs a refrigerant loop as an air source heat pump, providing enough heat for reheating of air and reheating of pool water.
  • the outdoor air heat exchanger acts as a "heat pump” and absorbs outdoor heat to heat indoor air and water.
  • the generated latent heat (from the reverse circulation system) subsequently is transferred to an air reheater and used to heat the hall and water of the swimming pool.
  • the use of a reverse circulation system saves operating cost in winter by more than 60% than an auxiliary electric heating device does.
  • the present invention provides a control system for adjusting air temperature, humidity and water temperature by an outdoor air heat exchanger, comprising an air conditioning apparatus, a heat exchange apparatus and an outdoor air heat exchanger, wherein the air conditioning apparatus comprises in turn: a gas recovery apparatus, a gas refrigerating and dehumidifying apparatus, a gas supply apparatus and a compressor unit; the gas refrigerating and dehumidifying apparatus and the compressor unit are connected in series to a first heat exchange apparatus to form a refrigerant system; the outdoor air heat exchanger is connected in parallel to the refrigerant system.
  • the air conditioning apparatus comprises in turn: a gas recovery apparatus, a gas refrigerating and dehumidifying apparatus, a gas supply apparatus and a compressor unit; the gas refrigerating and dehumidifying apparatus and the compressor unit are connected in series to a first heat exchange apparatus to form a refrigerant system; the outdoor air heat exchanger is connected in parallel to the refrigerant system.
  • the control system is enabled when indoor humidity is lower than a set value, i.e.: when indoor humidity is lower than a set value and water temperature and/or room temperature is lower than a set value, a heat absorption mode of the outdoor air heat exchanger will be enabled, refrigerant in the outdoor air heat exchanger will be inputted to the compressor unit via the outdoor air heat exchanger, the refrigerant in the compressor unit will be converted into a heating medium, and the heating medium will be inputted to the heat exchange apparatus and raise water temperature and/or room temperature through the first heat exchange apparatus.
  • FIG. 1 is a schematic view of the overall structure of a control system for adjusting air temperature, humidity and water temperature by an outdoor air heat exchanger according to the present invention, which comprises an indoor unit and an outdoor unit.
  • the indoor unit comprises an air conditioning apparatus 10, which comprises a gas recovery apparatus 11, a gas filter 12, a gas refrigerating and dehumidifying apparatus 13, a gas reheating apparatus 14, a gas supply apparatus 15 and a compressor unit.
  • the compressor unit comprises a compressor 16 and a gas-liquid separator 17 connected to the compressor 16.
  • the indoor unit further comprises a water heat exchange apparatus 18 and a liquid storage tank 19.
  • the outdoor unit comprises an outdoor air heat exchanger 20.
  • the indoor unit further comprises a first three-way valve 31, a second three-way valve 32 and a four-way valve 33, the compressor 16 is connected to an inlet 31a of the first three-way valve, and an outlet 31b of the first three-way valve is connected to an inlet of the gas reheating apparatus 14; an outlet 2 31c of the first three-way valve is connected to an inlet 33a of the four-way valve, and the four-way valve 33 comprises a first outlet 33b, a second outlet 33c and a third outlet 33d in turn.
  • the first outlet 33b of the four-way valve is connected to a first indoor ball valve 36a.
  • the first indoor ball valve 36a is connected to a first outdoor ball valve 37a, and the first outdoor ball valve 37a is connected to an outdoor air heat exchanger 20.
  • the second outlet 33c of the four-way valve is connected to a gas-liquid separator 17.
  • the gas-liquid separator 17 is connected to a compressor 16.
  • the compressor 16 is connected to the inlet 31a of the first three-way valve.
  • the third outlet 33d of the four-way valve is connected to a water heat exchange apparatus 18.
  • the other end of the water heat exchange apparatus 18 is connected to a liquid storage tank 19 via a first check valve 34a.
  • the other end of the gas reheating apparatus 14 is connected to the liquid storage tank 19 via a second check valve 34b.
  • the other end of the outdoor air heat exchanger is connected to a first expansion valve 38 and a fourth check valve 34d, which are connected to each other in parallel and then is connected to a second outdoor ball valve 37b.
  • the second outdoor ball valve 37b is connected to a second indoor ball valve 36b.
  • the second indoor ball valve 36b is connected to a third check valve 34c.
  • the third check valve 34c is connected to a liquid storage tank 19.
  • the liquid storage tank 19 is connected to an inlet 32a of a second three-way valve 32a.
  • An outlet 1 32b of the second three-way valve is connected to a second expansion valve 39.
  • the second expansion valve 39 is connected to an inlet of a gas refrigerating and dehumidifying apparatus 13.
  • An outlet of the gas refrigerating and dehumidifying apparatus 13 is connected to a gas-liquid separator 17.
  • the gas-liquid separator 17 is connected to a compressor 16.
  • the gas refrigerating and dehumidifying apparatus 13 may further be connected to an inlet of a gas reheating apparatus 14 via a valve 35.
  • An outlet 2 32c of the second three-way valve is connected to a second indoor ball valve 36b.
  • the second indoor ball valve 36b is connected to a second outdoor ball valve 37b.
  • the second outdoor ball valve 37b is connected to a first expansion valve 38 and a fourth check valve 34d, which are connected to each other in parallel.
  • the first expansion valve 38 and the fourth check valve 34d in parallel are connected to an outdoor air heat exchanger 20.
  • a refrigerant filter 21, a sight glass 22 and a third indoor ball valve 36c are arranged between the liquid storage tank 19 and the second three-way valve 32.
  • the control system is enabled when indoor humidity is lower than a set value, i.e.: when indoor humidity is lower than a set value, and air temperature and/or room temperature is lower than a set value, a heat absorption mode of the outdoor air heat exchanger will be enabled, refrigerant in an outdoor air heat exchanger is inputted to a four-way valve via an outdoor air heat exchanger and then to a compressor via the four-way valve, and converted into a heating medium inside the compressor.
  • the heating medium is inputted to an inlet of a first three-way valve and to a gas reheating apparatus via the first three-way valve and/or to a water heat exchange apparatus connected to a four-way valve; after heat exchange the heating medium flows back to a liquid storage tank via the gas reheating apparatus and/or the water heat exchange apparatus, and then flows to the outdoor air heat exchanger via a second three-way valve.
  • a heat dissipation mode of the outdoor air heat exchanger 20 When indoor humidity is lower than a set value, and water temperature and/or room temperature is higher than a set value, a heat dissipation mode of the outdoor air heat exchanger 20 will be enabled, the refrigerant in the outdoor air heat exchanger will circulate clockwise into an air heat exchanger 20, for heat dissipation by outdoor air.
  • the refrigerant liquid after heat dissipation is collected to a liquid storage tank 19, and then reduces room temperature and/or water temperature through a gas refrigerating and dehumidifying apparatus 13 and/or a water heat exchange apparatus 18.
  • the control system is enabled when indoor humidity is higher than a set value, i.e.: when indoor humidity is higher than a set value and water temperature and/or room temperature is lower than a set value, a mode of dehumidifying heat pump will be enabled, refrigerant liquid will be collected to a liquid storage tank 19 and then perform refrigeration and dehumidification through an expansion valve 39 and a gas refrigerating and dehumidifying apparatus 13.
  • the refrigerant gas after heat absorption is inputted to a compressor unit. After compression, the refrigerant gas inside the compressor 16 is converted into a heating medium.
  • the heating medium is inputted to a heat exchange apparatus and raises room temperature and/or water temperature through a gas reheating apparatus 14 and/or a water heat exchange apparatus 18.
  • a mode of dehumidifying heat pump When indoor humidity is higher than a set value, and water temperature and/or room temperature is higher than a set value, a mode of dehumidifying heat pump will be enabled, refrigerant liquid will be collected to a liquid storage tank 19 and then perform refrigeration and dehumidification through an expansion valve 39 and a gas refrigerating and dehumidifying apparatus 13.
  • the refrigerant gas after heat absorption is inputted to a compressor unit. After compression, the refrigerant gas inside the compressor 16 is converted into a heating medium.
  • a heat dissipation mode of the outdoor air heat exchanger is enabled, and the refrigerant in the outdoor air heat exchanger circulates clockwise into an air heat exchanger 20, for heat dissipation by outdoor air.
  • the operational logic is to open (open/close) valves for reverse circulation and turn an outdoor air heat exchanger into a "heat pump” to absorb outdoor heat to heat indoor air and water.
  • the control logic of "heat pump” operation is shown in the table below:
  • FIG. 2 shows an embodiment of the present invention, comprising an air conditioning apparatus 10 and an outdoor air heat exchanger 20.
  • the air conditioning apparatus 10 comprises a gas recovery apparatus 11, a gas filter 12, a gas refrigerating and dehumidifying apparatus 13, a gas reheating apparatus 14, a gas supply apparatus 15 and an inlet-end outdoor exhaust fan 15-1.
  • the gas refrigerating and dehumidifying apparatus 13 and the gas reheating apparatus 14 are connected to a compressor 16 in series to form a refrigerant system 100.
  • an outdoor air heat exchanger 20 serves as a heat reject and heat absorption component.
  • refrigerant in the outdoor air heat exchanger When indoor humidity is lower than a set value, refrigerant in the outdoor air heat exchanger will be inputted to a compressor unit via the outdoor air heat exchanger, and converted into a heating medium inside the compressor unit, and the heating medium will be inputted to a heat exchange apparatus, and adjust temperature through the gas reheating apparatus 14.
  • FIG. 3 shows another embodiment of the present invention.
  • a second heat exchanger 40 is connected to the refrigerant system in parallel, which may be a condenser, and exchanges heat with indoor water systems, such as swimming pool water and bath water.
  • FIG. 4 shows another embodiment of the present invention. Different from the embodiment disclosed in FIG. 3 , in this embodiment a second heat exchanger 40 is connected to the refrigerant system in parallel and connected to a water tower 50, for energy storage and heat dissipation.
  • FIG. 5 and FIG. 6 show another two embodiments of the present invention.
  • the air conditioning apparatus is provided with a water cooling system 13-1 before air treatment of the refrigerant system, as shown in FIG. 5 , or a water cooling system 13-1 is added after air treatment of the refrigerant system and before air supply, and the water cooling system 13-1 is a refrigerating coil, and chilled water is delivered into the refrigerating coil to cool the air.
  • FIG. 7 shows another embodiment of the present invention.
  • the air conditioning apparatus is provided with a water cooling system 13-1 before air treatment of the refrigerant system, and is provided with a water heating system 14-1 after air treatment of the refrigerant system and before air supply.
  • the water heating system 14-1 is a hot water coil and may be communicable to hot water for heating to raise temperature of the air.
  • FIG. 8 shows another embodiment of the present invention. Different from the embodiment disclosed in FIG. 7 , in this embodiment the air conditioning apparatus is provided with a water heating system 14-1 after air treatment of the refrigerant system and before air supply.
  • FIG. 9 shows another embodiment of the present invention.
  • the second heat exchanger 40 is connected in series to a third heat exchanger 60 and used to heat swimming pool water.
  • the third heat exchanger 60 is communicable to chilled water.
  • the air conditioning apparatus is provided with a water cooling system 13-1 before air treatment of the refrigerant system.
  • a third three-way valve 23 is arranged at an inlet of the water cooling system 13-1.
  • An inlet 23a of the third three-way valve 23 is communicable to chilled water.
  • An outlet 1 23b of the third three-way valve is connected to a refrigerating coil of the water cooling system 13-1.
  • An outlet 2 23c of the third three-way valve is connected to an inlet of a third heat exchanger 60.
  • a fourth three-way valve 24 is arranged at the inlet of the third heat exchanger 60, the outlet 2 23c of the third three-way valve is connected to an inlet 24a of the fourth three-way valve, or an outlet of the refrigerating coil of the water cooling system 13-1 is connected to the inlet 24a of the fourth three-way valve, an outlet 1 24b of the fourth three-way valve is connected to the inlet of the third heat exchanger 60, and an outlet 2 24c of the fourth three-way valve is communicable to chilled water.
  • FIG. 10 shows another embodiment of the present invention.
  • a first heat exchanger in a refrigerant system 100 is not the gas reheating apparatus 14 in the air conditioning apparatus in the foregoing embodiments, but a separate condenser.
  • the condenser When indoor air meets the conditions for dehumidification and cooling, the condenser will reject heat to a gas reheating apparatus 14 connected to the condenser.
  • a heat absorption mode of an outdoor air heat exchanger 20 When indoor air does not meet the conditions for dehumidification and cooling, for example, the indoor humidity is lower than a set value in winter, a heat absorption mode of an outdoor air heat exchanger 20 will be enabled, refrigerant in the outdoor air heat exchanger will be inputted to a compressor unit via the outdoor air heat exchanger, and converted into a heating medium in the compressor unit, the heating medium will be inputted to a first heat exchanger 40, and the first heat exchanger 40 will exchange heat with a gas reheating apparatus 14 or a water heat exchange apparatus 18 to adjust room temperature and water temperature.
  • indoor refrigerant systems connected in parallel to an outdoor air heat exchanger.
  • the indoor refrigerant system will perform dehumidification and cooling and use absorbed heat to adjust indoor air and indoor water systems (e.g., swimming pool or bath water), and when indoor humidity, temperature and pool water temperature all meet requirements, surplus heat recovered in a dehumidifying process will be removed through an outdoor air heat exchanger.
  • indoor air and indoor water systems e.g., swimming pool or bath water
  • surplus heat recovered in a dehumidifying process will be removed through an outdoor air heat exchanger.
  • recovered latent heat is restricted.
  • a "reverse circulation" system runs a refrigerant loop as an air source heat pump, providing enough heat for reheating of air and reheating of pool water.
  • the outdoor air heat exchanger acts as a "heat pump” and absorbs outdoor heat to heat indoor air and water.
  • the generated latent heat (from the reverse circulation system) subsequently is transferred to an air reheater and used to heat the hall and water of the swimming pool.
  • the use of a reverse circulation system saves operating cost in winter by more than 60% in winter than an auxiliary electric heating device does.

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  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
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  • Air Conditioning Control Device (AREA)
  • Central Air Conditioning (AREA)
EP19185986.7A 2019-04-09 2019-07-12 Control system for adjusting air temperature, humidity and water temperature by an outdoor air heat exchanger Pending EP3722689A1 (en)

Applications Claiming Priority (1)

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HK19122058 2019-04-09

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EP3722689A1 true EP3722689A1 (en) 2020-10-14

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EP (1) EP3722689A1 (zh)
CN (2) CN210832212U (zh)
SG (1) SG10202002664QA (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114427759A (zh) * 2020-10-29 2022-05-03 广东爱克节能设备有限公司 一种多功能泳池热泵除湿恒温系统

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113218098B (zh) * 2021-04-01 2022-05-10 湖南雅立科技开发有限公司 一种基于三器冷媒压缩循环的气体处理方法和系统

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2457532Y (zh) * 2000-12-28 2001-10-31 北京森博苑科技有限公司 具有生活热水的风冷热泵装置
EP2733441A2 (en) * 2012-11-16 2014-05-21 Mitsubishi Heavy Industries, Ltd. Multi-type air conditioner
EP3205955A1 (en) * 2016-02-12 2017-08-16 Mitsubishi Heavy Industries Thermal Systems, Ltd. Air conditioner
EP3299734A1 (en) * 2016-09-23 2018-03-28 Daikin Industries, Limited System for air-conditioning and hot-water supply
EP3415839A1 (en) * 2016-02-10 2018-12-19 Mitsubishi Electric Corporation Refrigeration cycle device

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010151380A (ja) * 2008-12-25 2010-07-08 Tokyo Electric Power Co Inc:The 空気調和機
CN101957097A (zh) * 2010-09-15 2011-01-26 江苏天舒电器有限公司 一种热回收型多功能泳池一体机
JP5518812B2 (ja) * 2011-09-06 2014-06-11 木村工機株式会社 空調機能付外調機
CN204494893U (zh) * 2015-01-15 2015-07-22 佛山市顺德区资乐电器有限公司 一种恒温热泵泳池机
CN106152264B (zh) * 2015-04-07 2019-10-11 大金工业株式会社 空调系统及其控制方法
CN206410291U (zh) * 2016-12-30 2017-08-15 江苏天舒电器股份有限公司 一种变风量泳池变频除湿兼池水恒温的设备
CN107747806B (zh) * 2017-10-27 2020-08-14 国安瑞（北京）科技有限公司 空调系统
CN108332327B (zh) * 2018-03-01 2023-11-10 清华大学 一种空气处理设备
CN208382429U (zh) * 2018-04-28 2019-01-15 江苏三六五室内环境科技有限公司 一种自带冷热水循环供应的新风机
CN208282328U (zh) * 2018-05-18 2018-12-25 浙江欧伦电气有限公司 一体式水冷泳池热泵除湿系统

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2457532Y (zh) * 2000-12-28 2001-10-31 北京森博苑科技有限公司 具有生活热水的风冷热泵装置
EP2733441A2 (en) * 2012-11-16 2014-05-21 Mitsubishi Heavy Industries, Ltd. Multi-type air conditioner
EP3415839A1 (en) * 2016-02-10 2018-12-19 Mitsubishi Electric Corporation Refrigeration cycle device
EP3205955A1 (en) * 2016-02-12 2017-08-16 Mitsubishi Heavy Industries Thermal Systems, Ltd. Air conditioner
EP3299734A1 (en) * 2016-09-23 2018-03-28 Daikin Industries, Limited System for air-conditioning and hot-water supply

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114427759A (zh) * 2020-10-29 2022-05-03 广东爱克节能设备有限公司 一种多功能泳池热泵除湿恒温系统

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CN111795427A (zh) 2020-10-20
CN210832212U (zh) 2020-06-23
SG10202002664QA (en) 2020-11-27

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