US20130167559A1 - Heat pump and control method thereof - Google Patents

Heat pump and control method thereof Download PDF

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Publication number
US20130167559A1
US20130167559A1 US13/731,577 US201213731577A US2013167559A1 US 20130167559 A1 US20130167559 A1 US 20130167559A1 US 201213731577 A US201213731577 A US 201213731577A US 2013167559 A1 US2013167559 A1 US 2013167559A1
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United States
Prior art keywords
compressor
unit
flow path
indoor unit
valve
Prior art date
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Abandoned
Application number
US13/731,577
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English (en)
Inventor
Sung Tae Kim
Sung Goo Kim
Se Hoon Shin
Wook Jin Lee
Sung Oug Cho
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Samsung Electronics Co Ltd
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Samsung Electronics Co Ltd
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Publication date
Priority claimed from KR1020120150144A external-priority patent/KR20130079990A/ko
Application filed by Samsung Electronics Co Ltd filed Critical Samsung Electronics Co Ltd
Assigned to SAMSUNG ELECTRONICS CO., LTD. reassignment SAMSUNG ELECTRONICS CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CHO, SUNG OUG, KIM, SUNG GOO, KIM, SUNG TAE, LEE, WOOK JIN, Shin, Se Hoon
Publication of US20130167559A1 publication Critical patent/US20130167559A1/en
Abandoned legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H6/00—Combined water and air 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
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D11/00—Central heating systems using heat accumulated in storage masses
    • F24D11/02—Central heating systems using heat accumulated in storage masses using heat pumps
    • F24D11/0214—Central heating systems using heat accumulated in storage masses using heat pumps water heating system
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D11/00—Central heating systems using heat accumulated in storage masses
    • F24D11/02—Central heating systems using heat accumulated in storage masses using heat pumps
    • F24D11/0214—Central heating systems using heat accumulated in storage masses using heat pumps water heating system
    • F24D11/0235—Central heating systems using heat accumulated in storage masses using heat pumps water heating system with recuperation of waste energy
    • F24D11/0242—Central heating systems using heat accumulated in storage masses using heat pumps water heating system with recuperation of waste energy contained in exhausted air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D11/00—Central heating systems using heat accumulated in storage masses
    • F24D11/02—Central heating systems using heat accumulated in storage masses using heat pumps
    • F24D11/0257—Central heating systems using heat accumulated in storage masses using heat pumps air heating system
    • F24D11/0278—Central heating systems using heat accumulated in storage masses using heat pumps air heating system with recuperation of waste energy
    • F24D11/0285—Central heating systems using heat accumulated in storage masses using heat pumps air heating system with recuperation of waste energy contained in exhausted air
    • 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
    • F24D5/00—Hot-air central heating systems; Exhaust gas central heating systems
    • F24D5/12—Hot-air central heating systems; Exhaust gas central heating systems using heat pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B13/00—Compression machines, plants or systems, with reversible cycle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B30/00—Heat pumps
    • F25B30/02—Heat pumps of the compression type
    • 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
    • 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
    • F24D2200/16—Waste heat
    • F24D2200/22—Ventilation air
    • 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
    • F25B2313/005—Outdoor unit 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
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/007—Compression machines, plants or systems with reversible cycle not otherwise provided for three pipes connecting the outdoor side to the indoor side with multiple indoor units
    • 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
    • F25B2313/021—Indoor unit or outdoor unit with auxiliary heat exchanger not forming part of the indoor or outdoor unit
    • 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
    • F25B2313/0231—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units with simultaneous cooling and heating
    • 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
    • F25B2313/027—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means
    • F25B2313/02732—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means using two three-way 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
    • F25B2600/2513—Expansion valves
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00—Integration of renewable energy sources in buildings
    • Y02B10/70—Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/13—Hot air central heating systems using heat pumps
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/52—Heat recovery pumps, i.e. heat pump based systems or units able to transfer the thermal energy from one area of the premises or part of the facilities to a different one, improving the overall efficiency
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P80/00—Climate change mitigation technologies for sector-wide applications
    • Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
    • Y02P80/15—On-site combined power, heat or cool generation or distribution, e.g. combined heat and power [CHP] supply

Definitions

  • Embodiments relate to heat pump in which an air conditioner and an environmentally friendly cooling/heating device are combined.
  • a heat pump includes an outdoor unit (a compressor, a single refrigerant flow path switching member for cooling/heating, an expansion device, and an outdoor heat exchanger), an indoor unit, and a hydro unit (a hot water heat exchanger).
  • cooling/heating using the indoor unit and cooling/heating using the hydro unit may not independently performed.
  • the performance of the hydro unit may be lowered due to a refrigerant collected in the indoor unit when the indoor unit is operated.
  • an air to air mode which is a cooling/heating mode using an indoor unit
  • an air to water mode which is a cooling/heating mode using a hydro unit
  • an air to air mode which is a cooling/heating mode using an indoor unit
  • an air to water mode which is a cooling/heating mode using a hydro unit
  • a refrigerant flow path switching member provided between the hydro unit and a compressor may be constituted by a one-way valve, thereby reducing cost and simplifying the structure of a heat pump.
  • a heat pump includes an outdoor unit including a compressor, an outdoor heat exchanger, and a first expansion valve, an indoor unit including an indoor heat exchanger and a second expansion valve, a hydro unit including a hot water heat exchanger and a third expansion valve, the hydro unit heating or cooling water through heat exchange between a refrigerant and the water, a refrigerant flow path switching member to switch refrigerant flow paths among the compressor, the outdoor heat exchanger, the indoor unit, and the hydro unit such that heating and/or cooling through the indoor unit and the hydro unit is performed in a heat recovery mode to recover and reuse residual heat, and a controller to control the refrigerant flow path switching member such that the heating and/or the cooling is performed in the heat recovery mode.
  • the refrigerant flow path switching member may include a first valve to form a flow path between an outlet port of the compressor and the outdoor heat exchanger and a flow path between an inlet port of the compressor and the outdoor heat exchanger and to perform switching between the flow paths according to an operation mode, a second valve to form a flow path between the outlet port of the compressor and the indoor unit and a flow path between the inlet port of the compressor and the indoor unit and to perform switching between the flow paths according to an operation mode, and a third valve to form a flow path between the outlet port of the compressor and the hydro unit and a flow path between the inlet port of the compressor and the hydro unit and to perform switching between the flow paths according to an operation mode.
  • the refrigerant flow path switching member may include a first valve to form a flow path between an outlet port of the compressor and the outdoor heat exchanger and a flow path between an inlet port of the compressor and the outdoor heat exchanger and to perform switching between the flow paths according to an operation mode, a second valve to form a flow path between the outlet port of the compressor and the indoor unit and a flow path between the inlet port of the compressor and the indoor unit and to perform switching between the flow paths according to an operation mode, and a one-way valve to form a flow path between the outlet port of the compressor and the hydro unit and a flow path between the inlet port of the compressor and the hydro unit and to perform switching between the flow paths according to an operation mode.
  • a heat pump includes an outdoor unit including a compressor, an outdoor heat exchanger, and a first expansion valve, an indoor unit including an indoor heat exchanger and a second expansion valve, a hydro unit including a hot water heat exchanger and a third expansion valve, the hydro unit heating or cooling water through heat exchange between a refrigerant and the water, a refrigerant flow path switching member including a first valve to form a flow path between an outlet port of the compressor and the outdoor heat exchanger and a flow path between an inlet port of the compressor and the outdoor heat exchanger and to perform switching between the flow paths, a second valve to form a flow path between the outlet port of the compressor and the indoor unit and a flow path between the inlet port of the compressor and the indoor unit and to perform switching between the flow paths, and a third valve to form a flow path between the outlet port of the compressor and the hydro unit and a flow path between the inlet port of the compressor and the hydro unit and to perform switching between the flow paths,
  • the controller may control the first valve to form the flow path between the inlet port of the compressor and the outdoor heat exchanger, the second valve to form the flow path between the inlet port of the compressor and the indoor unit, and the third valve to form the flow path between the outlet port of the compressor and the hydro unit such that a refrigerant discharged from the compressor is supplied to both the outdoor heat exchanger and the indoor unit via the hydro unit, thereby simultaneously performing heating through the hydro unit (air to water heating) and cooling through the indoor unit (air to air cooling).
  • the controller may control opening degrees of the first expansion valve provided in the outdoor unit and the second expansion valve provided in the indoor unit to adjust flow rate of the refrigerant introduced into the outdoor unit and the indoor unit, thereby adjusting a heating capacity of the hydro unit and a cooling capacity of the indoor unit.
  • the controller may control the first valve to form the flow path between the inlet port of the compressor and the outdoor heat exchanger, the second valve to form the flow path between the outlet port of the compressor and the indoor unit, and the third valve to form the flow path between the inlet port of the compressor and the hydro unit such that a refrigerant discharged from the compressor is supplied to both the outdoor heat exchanger and the hydro unit via the indoor unit, thereby simultaneously performing heating through the indoor unit (air to air heating) and cooling through the hydro unit (air to water cooling).
  • the controller may control opening degrees of the first expansion valve provided in the outdoor unit and the third expansion valve provided in the hydro unit to adjust flow rate of the refrigerant introduced into the outdoor unit and the hydro unit, thereby adjusting a heating capacity of the indoor unit and a cooling capacity of the hydro unit.
  • the controller may control the first valve to form the flow path between the outlet port of the compressor and the outdoor heat exchanger, the second valve to form the flow path between the inlet port of the compressor and the indoor unit, and the third valve to form the flow path between the outlet port of the compressor and the hydro unit such that a refrigerant discharged from the compressor is supplied to the indoor unit via the outdoor heat exchanger and is directly supplied to the hydro unit, thereby simultaneously performing cooling through the indoor unit and heating through the hydro unit.
  • the controller may control opening degrees of the first expansion valve provided in the outdoor unit, the second expansion valve provided in the indoor unit, and the third expansion valve provided in the hydro unit to adjust flow rate of the refrigerant introduced into the hydro unit and the indoor unit, thereby adjusting a heating capacity of the hydro unit and a cooling capacity of the indoor unit.
  • the controller may control the first valve to form the flow path between the outlet port of the compressor and the outdoor heat exchanger, the second valve to form the flow path between the outlet port of the compressor and the indoor unit, and the third valve to form the flow path between the inlet port of the compressor and the hydro unit such that a refrigerant discharged from the compressor is supplied to the hydro unit via the outdoor heat exchanger and is directly supplied to the indoor unit, thereby simultaneously performing cooling through the hydro unit and heating through the indoor unit.
  • the controller may control opening degrees of the first expansion valve provided in the outdoor unit, the second expansion valve provided in the indoor unit, and the third expansion valve provided in the hydro unit to adjust flow rate of the refrigerant introduced into the hydro unit and the indoor unit, thereby adjusting a cooling capacity of the hydro unit and a heating capacity of the indoor unit.
  • the controller may control the first valve to form the flow path between the inlet port of the compressor and the outdoor heat exchanger, the second valve to form the flow path between the outlet port of the compressor and the indoor unit, the third valve to form the flow path between the inlet port of the compressor and the hydro unit, and the third expansion valve provided in the hydro unit to be closed such that a refrigerant discharged from the compressor is recovered to the outdoor unit via the indoor unit, thereby independently performing heating through the indoor unit.
  • the controller may control the first valve to form the flow path between the inlet port of the compressor and the outdoor heat exchanger, the second valve to form the flow path between the inlet port of the compressor and the indoor unit, the third valve to form the flow path between the outlet port of the compressor and the hydro unit, and the second expansion valve provided in the indoor unit to be closed such that a refrigerant discharged from the compressor is recovered to the outdoor unit via the hydro unit, thereby independently performing heating through the hydro unit.
  • the controller may control the first valve to form the flow path between the inlet port of the compressor and the outdoor heat exchanger, the second valve to form the flow path between the outlet port of the compressor and the indoor unit, and the third valve to form the flow path between the outlet port of the compressor and the hydro unit such that a refrigerant discharged from the compressor is supplied to both the indoor unit and the hydro unit, thereby performing heating through both the indoor unit and the hydro unit, and control opening degrees of the second expansion valve provided in the indoor unit and the third expansion valve provided in the hydro unit to adjust a heating capacity of the indoor unit and a heating capacity of the hydro unit.
  • the controller may control all flow paths of the third valve to be closed while controlling the second valve to form the flow path between the outlet port of the compressor and the indoor unit such that supply of the refrigerant to the hydro unit is interrupted, thereby performing heating through the indoor unit first, and, when the heating through the indoor unit is performed to a predetermined level, the controller may control all flow paths of the second valve to be closed and the third valve to form the flow path between the outlet port of the compressor and the hydro unit, thereby performing heating through the hydro unit.
  • the controller may control the first valve to form the flow path between the outlet port of the compressor and the outdoor heat exchanger, the second valve to form the flow path between the inlet port of the compressor and the indoor unit, the third valve to form the flow path between the inlet port of the compressor and the hydro unit, and the third expansion valve provided in the hydro unit to be closed such that a refrigerant discharged from the compressor is supplied to the indoor unit via the outdoor heat exchanger, thereby independently performing cooling through the indoor unit.
  • the controller may control the first valve to form the flow path between the outlet port of the compressor and the outdoor heat exchanger, the second valve to form the flow path between the inlet port of the compressor and the indoor unit, the third valve to form the flow path between the inlet port of the compressor and the hydro unit, and the second expansion valve provided in the indoor unit to be closed such that a refrigerant discharged from the compressor is supplied to the hydro unit via the outdoor heat exchanger, thereby independently performing cooling through the hydro unit.
  • the controller may control the first valve to form the flow path between the outlet port of the compressor and the outdoor heat exchanger, the second valve to form the flow path between the inlet port of the compressor and the indoor unit, and the third valve to form the flow path between the inlet port of the compressor and the hydro unit such that a refrigerant discharged from the compressor is supplied to both the indoor unit and the hydro unit via the outdoor heat exchanger, thereby performing cooling through both the indoor unit and the hydro unit.
  • a control method of a heat pump including an outdoor unit, an indoor unit, and a hydro unit to heat or cool water through heat exchange between a refrigerant and the water includes controlling a first valve to form a flow path between an outlet port of the compressor and the outdoor heat exchanger and a flow path between an inlet port of the compressor and the outdoor heat exchanger and to perform switching between the flow paths according to an operation mode, controlling a second valve to form a flow path between the outlet port of the compressor and the indoor unit and a flow path between the inlet port of the compressor and the indoor unit and to perform switching between the flow paths according to an operation mode, controlling a third valve to form a flow path between the outlet port of the compressor and the hydro unit and a flow path between the inlet port of the compressor and the hydro unit and to perform switching between the flow paths according to an operation mode, and controlling the first, second, and third valves to perform switching between the flow paths such that simultaneous cooling and heating operations and/or simultaneous heating and cooling operations are
  • a heat pump includes an outdoor unit including a compressor, an outdoor heat exchanger, and a first expansion valve, an indoor unit including an indoor heat exchanger and a second expansion valve, a hydro unit including a hot water heat exchanger and a third expansion valve, the hydro unit heating or cooling water through heat exchange between a refrigerant and the water, a refrigerant flow path switching member including a first valve to form a flow path between an outlet port of the compressor and the outdoor heat exchanger and a flow path between an inlet port of the compressor and the outdoor heat exchanger and to perform switching between the flow paths, a second valve to form a flow path between the outlet port of the compressor and the indoor unit and a flow path between the inlet port of the compressor and the indoor unit and to perform switching between the flow paths, and a one-way valve to form a flow path between the outlet port of the compressor and the hydro unit and a flow path between the inlet port of the compressor and the hydro unit and to perform switching between the flow
  • the controller may control the first valve to form the flow path between the inlet port of the compressor and the outdoor heat exchanger, the second valve to form the flow path between the inlet port of the compressor and the indoor unit, and the one-way valve to form the flow path between the outlet port of the compressor and the hydro unit such that a refrigerant discharged from the compressor is supplied to both the outdoor heat exchanger and the indoor unit via the hydro unit, thereby simultaneously performing heating through the hydro unit (air to water heating) and cooling through the indoor unit (air to air cooling).
  • the controller may control opening degrees of the first expansion valve provided in the outdoor unit and the second expansion valve provided in the indoor unit to adjust flow rate of the refrigerant introduced into the outdoor unit and the indoor unit, thereby adjusting a heating capacity of the hydro unit and a cooling capacity of the indoor unit.
  • the controller may control the first valve to form the flow path between the outlet port of the compressor and the outdoor heat exchanger, the second valve to form the flow path between the inlet port of the compressor and the indoor unit, and the one-way valve to form the flow path between the outlet port of the compressor and the hydro unit such that a refrigerant discharged from the compressor is supplied to the indoor unit via the outdoor heat exchanger and is directly supplied to the hydro unit, thereby simultaneously performing cooling through the indoor unit (air to air cooling) and heating through the hydro unit (air to water heating).
  • the controller may control opening degrees of the first expansion valve provided in the outdoor unit, the second expansion valve provided in the indoor unit, and the third expansion valve provided in the hydro unit to adjust flow rate of the refrigerant introduced into the hydro unit and the indoor unit, thereby adjusting a heating capacity of the hydro unit and a cooling capacity of the indoor unit.
  • the controller may control the first valve to form the flow path between the inlet port of the compressor and the outdoor heat exchanger, the second valve to form the flow path between the outlet port of the compressor and the indoor unit, the one-way valve to be closed such that the flow path between the inlet port of the compressor and the hydro unit is not formed, and the third expansion valve provided in the hydro unit to be closed such that a refrigerant discharged from the compressor is recovered to the outdoor unit via the indoor unit, thereby independently performing heating through the indoor unit (air to air heating).
  • the controller may control the first valve to form the flow path between the inlet port of the compressor and the outdoor heat exchanger, the second valve to form the flow path between the inlet port of the compressor and the indoor unit, the one-way valve to form the flow path between the outlet port of the compressor and the hydro unit, and the second expansion valve provided in the indoor unit to be closed such that a refrigerant discharged from the compressor is recovered to the outdoor unit via the hydro unit, thereby independently performing heating through the hydro unit (air to water heating).
  • the controller may control the first valve to form the flow path between the inlet port of the compressor and the outdoor heat exchanger, the second valve to form the flow path between the outlet port of the compressor and the indoor unit, and the one-way valve to form the flow path between the outlet port of the compressor and the hydro unit such that a refrigerant discharged from the compressor is supplied to both the indoor unit and the hydro unit, thereby performing heating through both the indoor unit and the hydro unit (air to air heating+air to water heating), and control opening degrees of the second expansion valve provided in the indoor unit and the third expansion valve provided in the hydro unit to adjust a heating capacity of the indoor unit and a heating capacity of the hydro unit.
  • the controller may control all flow paths of the one-way valve to be closed while controlling the second valve to form the flow path between the outlet port of the compressor and the indoor unit such that supply of the refrigerant to the hydro unit is interrupted, thereby performing heating through the indoor unit first, and, when the heating through the indoor unit is performed to a predetermined level, the controller may control all flow paths of the second valve to be closed and the one-way valve to form the flow path between the outlet port of the compressor and the hydro unit, thereby performing heating through the hydro unit.
  • the controller may control the first valve to form the flow path between the outlet port of the compressor and the outdoor heat exchanger, the second valve to form the flow path between the inlet port of the compressor and the indoor unit, the one-way valve to be closed such that the flow path between the inlet port of the compressor and the hydro unit is formed, and the third expansion valve provided in the hydro unit to be closed such that a refrigerant discharged from the compressor is supplied to the indoor unit via the outdoor heat exchanger, thereby independently performing cooling through the indoor unit (air to air cooling).
  • a control method of a heat pump including an outdoor unit, an indoor unit, and a hydro unit to heat water through heat exchange between a refrigerant and the water includes controlling a first valve to form a flow path between an outlet port of the compressor and the outdoor heat exchanger and a flow path between an inlet port of the compressor and the outdoor heat exchanger and to perform switching between the flow paths according to an operation mode, controlling a second valve to form a flow path between the outlet port of the compressor and the indoor unit and a flow path between the inlet port of the compressor and the indoor unit and to perform switching between the flow paths according to an operation mode, controlling a one-way valve to form a flow path between the outlet port of the compressor and the hydro unit and to open or close the flow path according to an operation mode, and controlling the first valve, the second valve, and the one-way valve to perform switching between the flow paths such that simultaneous cooling and heating operations are performed in a heat recovery mode to recover and reuse residual heat.
  • This control method may further provide controlling the one-way valve to form a sixth flow path between the inlet port of the compressor and the hydro unit and to open or close the flow path according to an operation mode, and controlling the first valve, the second valve, and the one-way valve to perform switching between the first through sixth flow paths such that simultaneous cooling and heating operations are performed in a heat recovery mode to recover and reuse residual heat.
  • FIG. 1 is a view showing a heat pump according to an embodiment
  • FIG. 2 is a view showing a control system of the heat pump shown in FIG. 1 ;
  • FIG. 3 is a view showing a refrigerant cycle in a heat recovery heating mode when a heating capacity in an air to water heating mode is greater than a cooling capacity in an air to air cooling mode (air to water heating>air to air cooling);
  • FIG. 4 is a view showing a refrigerant cycle in a heat recovery heating mode when a heating capacity in an air to air heating mode is greater than a cooling capacity in an air to water cooling mode (air to air heating>air to water cooling);
  • FIG. 5 is a view showing a refrigerant cycle in a heat recovery cooling mode when a cooling capacity in an air to air cooling mode is greater than a heating capacity in an air to water heating mode (air to air cooling>air to water heating);
  • FIG. 6 is a view showing a refrigerant cycle in a heat recovery cooling mode when a cooling capacity in an air to water cooling mode is greater than a heating capacity in an air to air heating mode (air to water cooling>air to air heating);
  • FIG. 7 is a view showing a heating mode to heat air in an air conditioning space through an indoor unit (referred to as an air to air heating mode);
  • FIG. 8 is a view showing a heating mode to perform heating using heated water in a hydro unit (referred to as an air to water heating mode);
  • FIG. 9 is a view showing a combination heating mode in which an air to air heating mode and an air to water heating mode are simultaneously performed;
  • FIG. 10 is a view showing a cooling mode to cool air in an air conditioning space through an indoor unit to lower temperature in the air conditioning space (referred to as an air to air cooling mode);
  • FIG. 11 is a view showing a cooling mode to perform cooling using cooled water in a hydro unit (referred to as an air to water cooling mode);
  • FIG. 12 is a view showing a combination cooling mode in which an air to air cooling mode and an air to water cooling mode are simultaneously performed;
  • FIG. 13 is a view showing flow path switching of a first four-way valve, a second four-way valve, and a third four-way valve in the respective operation modes of the heat pump shown in FIGS. 3 to 12 ;
  • FIG. 14 is a view showing a heat pump according to an embodiment
  • FIG. 15 is a view showing a control system of the heat pump shown in FIG. 14 ;
  • FIG. 16 is a view showing a refrigerant cycle in a heat recovery heating mode of the heat pump shown in FIG. 14 when a heating capacity in an air to water heating mode is greater than a cooling capacity in an air to air cooling mode (air to water heating>air to air cooling);
  • FIG. 17 is a view showing a refrigerant cycle in a heat recovery cooling mode of the heat pump shown in FIG. 14 when a cooling capacity in an air to air cooling mode is greater than a heating capacity in an air to water heating mode (air to air cooling>air to water heating);
  • FIG. 18 is a view showing a heating mode of the heat pump shown in FIG. 14 to heat air in an air conditioning space through an indoor unit (referred to as an air to air heating mode);
  • FIG. 19 is a view showing a heating mode of the heat pump shown in FIG. 14 to perform heating using heated water in a hydro unit (referred to as an air to water heating mode);
  • FIG. 20 is a view showing a combination heating mode of the heat pump shown in FIG. 14 in which an air to air heating mode and an air to water heating mode are simultaneously performed;
  • FIG. 21 is a view showing a cooling mode of the heat pump shown in FIG. 14 to cool air in an air conditioning space through an indoor unit to lower temperature in the air conditioning space (referred to as an air to air cooling mode);
  • FIG. 22 is a view showing flow path switching of a first four-way valve, a second four-way valve, and a one-way valve in the respective operation modes of the heat pump shown in FIGS. 16 to 21 .
  • FIG. 1 is a view showing a heat pump 100 according to an embodiment.
  • the heat pump 100 includes an outdoor unit 102 , an indoor unit 104 , and a hydro unit 106 .
  • the outdoor unit 102 , the indoor unit 104 , and the hydro unit 106 are connected to one another via a refrigerant pipe to constitute a refrigerant cycle.
  • the outdoor unit 102 includes a compressor 108 , an accumulator 110 , refrigerant flow path switching members 112 a , 112 b , and 112 c , an outdoor heat exchanger 114 , and a first expansion device 116 .
  • the refrigerant flow path switching members 112 a , 112 b , and 112 c include a first four-way valve 112 a , a second four-way valve 112 b , and a third four-way valve 112 c .
  • the first expansion device 116 is realized by an electronic expansion valve.
  • the first expansion device 116 expands a refrigerant, adjusts flow rate of the refrigerant, and interrupts flow of the refrigerant as needed. Another expansion device to perform the above functions may be used.
  • the compressor 108 compresses a low-temperature, low-pressure refrigerant, suctioned through an inlet port 108 a , and discharges a high-temperature, high-pressure refrigerant through an outlet port 108 b .
  • the compressor 108 may include a single inverter compressor, the compression capacity of which is changed depending upon input frequencies, or a plurality of constant-speed compressors having a fixed compression capacity.
  • the inlet port 108 a of the compressor 108 is connected to the accumulator 110 .
  • the outlet port 108 b of the compressor 108 is connected to the first four-way valve 112 a , the second four-way valve 112 b , and the third four-way valve 112 c .
  • the first four-way valve 112 a , the second four-way valve 112 b , and the third four-way valve 112 c are also connected to the accumulator 110 .
  • the refrigerant flow path switching members 112 a , 112 b , and 112 c include the first four-way valve 112 a , the second four-way valve 112 b , and the third four-way valve 112 c .
  • the refrigerant flow path switching members 112 a , 112 b , and 112 c selectively switch refrigerant flow paths in a heat recovery mode, a heating mode, and a cooling mode to secure refrigerant flow paths corresponding to the respective modes.
  • the heat recovery mode is an operation mode to recover and reuse residual heat.
  • a heat exchanger is used to recover heat.
  • the first four-way valve 112 a performs switching between a flow path a 1 -a 3 between the outlet port 108 b of the compressor 108 and the outdoor heat exchanger 114 and a flow path a 1 -a 2 between the inlet port 108 a of the compressor 108 and the outdoor heat exchanger 114 .
  • the second four-way valve 112 b performs switching between a flow path b 1 -b 3 between the outlet port 108 b of the compressor 108 and the indoor unit 104 and a flow path b 1 -b 2 between the inlet port 108 a of the compressor 108 and the indoor unit 104 .
  • the third four-way valve 112 c performs switching between a flow path c 1 -c 3 between the outlet port 108 b of the compressor 108 and the hydro unit 106 and a flow path c 1 -c 2 between the inlet port 108 a of the compressor 108 and the hydro unit 106 .
  • Each of the four-way valves 112 a , 112 b , and 112 c has four ports, through which a refrigerant flows. In this embodiment, one of the ports is closed, and the other three ports are used. In FIG. 1 , one port of each of the four-way valves 112 a , 112 b , and 112 c denoted by X is closed. In this embodiment, therefore, three-way valves, each of which has a three port, may be used, or other valves functioning as the three-way valves may be also used.
  • the refrigerant flow path switching members 112 a , 112 b , and 112 c may be disposed inside or outside the outdoor unit 102 .
  • the outdoor heat exchanger 114 functions as a condenser in a cooling mode and as an evaporator in a heating mode.
  • the first expansion device 116 is connected to one side of the outdoor heat exchanger 114 .
  • At the outdoor heat exchanger 114 may be mounted an outdoor fan (not shown) to improve heat exchange efficiency between a refrigerant and outdoor air.
  • the indoor unit 104 includes an indoor heat exchanger 118 and a second expansion device 120 .
  • the indoor heat exchanger 118 functions as an evaporator in a cooling mode and as a condenser in a heating mode.
  • the second expansion device 120 is connected to one side of the indoor heat exchanger 118 .
  • the second expansion device 120 is realized by an electronic expansion valve.
  • the second expansion device 120 expands a refrigerant, adjusts flow rate of the refrigerant, and interrupts flow of the refrigerant as needed.
  • Another expansion device to perform the above functions may be used.
  • At the indoor heat exchanger 118 may be mounted an indoor fan (not shown) to improve heat exchange efficiency between a refrigerant and indoor air. According to circumstances, two or more indoor units 104 may be provided.
  • the hydro unit 106 heats/cools water through heat exchange between a refrigerant and water such that the heated/cooled water is used for heating/cooling.
  • the hydro unit 106 includes a hot water heat exchanger 122 and a third expansion device 124 .
  • Refrigerant heat exchange plates, through which a refrigerant flows, and water heat exchange plates, through which water flows, are alternately arranged in the hot water heat exchanger 122 .
  • Cold water/hot water is generated through heat exchange between the refrigerant heat exchange plates and the water heat exchange plates.
  • a refrigerant, compressed by the compressor 108 may be directly supplied to the hot water heat exchanger 122 of the hydro unit 106 , or a refrigerant, having passed through the outdoor unit 102 or the indoor unit 104 , may be supplied to the hot water heat exchanger 122 of the hydro unit 106 .
  • the cold water/hot water generated by the hydro unit 106 is supplied to a water supply tank 126 , a fan coil unit 128 , and floor cooling/heating device 130 such that the cold water/hot water is used for cold water/hot water supply and cooling/heating.
  • the third expansion device 124 is realized by an electronic expansion valve. The third expansion device 124 expands a refrigerant, adjusts flow rate of the refrigerant, and interrupts flow of the refrigerant as needed. Another expansion device to perform the above functions may be used.
  • FIG. 2 is a view showing a control system of the heat pump shown in FIG. 1 .
  • a controller 202 controls operations of the compressor 108 , the first expansion device 116 , the second expansion device 120 , the third expansion device 124 , the first four-way valve 112 a , the second four-way valve 112 b , and the third four-way valve 112 c based on signals input from a sensor 204 and a remote controller 206 .
  • the heat pump 100 performs a heating mode operation, a cooling mode operation, and a heat recovery mode operation according to the control of the controller 202 .
  • an air to air mode is a cooling/heating mode using the indoor unit 104 .
  • cooling/heating is performed through heat exchange between a refrigerant and air in the indoor unit 104 .
  • an air to water mode is a cooling/heating mode using the hydro unit 106 .
  • cooling/heating is performed through heat exchange between a refrigerant and water in the hot water heat exchanger 122 of the hydro unit 106 .
  • heat exchange may be performed between air and the water having been heat-exchanged with the refrigerant to perform cooling/heating.
  • FIGS. 3 to 6 are views showing heat recovery heating and cooling modes of the heat pump according to an embodiment.
  • FIGS. 3 and 4 show a heat recovery heating mode
  • FIGS. 5 and 6 show a heat recovery cooling mode.
  • FIG. 3 is a view showing a refrigerant cycle in a heat recovery heating mode when a heating capacity in an air to water heating mode is greater than a cooling capacity in an air to air cooling mode (air to water heating>air to air cooling)
  • FIG. 4 is a view showing a refrigerant cycle in a heat recovery heating mode when a heating capacity in an air to air heating mode is greater than a cooling capacity in an air to water cooling mode (air to air heating>air to water cooling).
  • FIG. 3 is a view showing a refrigerant cycle in a heat recovery heating mode when a heating capacity in an air to water heating mode is greater than a cooling capacity in an air to water cooling mode (air to air heating>air to water cooling).
  • FIG. 3 is a view showing a refrigerant
  • FIG. 5 is a view showing a refrigerant cycle in a heat recovery cooling mode when a cooling capacity in an air to air cooling mode is greater than a heating capacity in an air to water heating mode (air to air cooling>air to water heating)
  • FIG. 6 is a view showing a refrigerant cycle in a heat recovery cooling mode when a cooling capacity in an air to water cooling mode is greater than a heating capacity in an air to air heating mode (air to water cooling>air to air heating).
  • the controller 202 controls the refrigerant flow path switching members 112 a , 112 b , and 112 c to switch the refrigerant flow paths among the compressor 108 , the outdoor heat exchanger 114 , the indoor unit 104 , and the hydro unit 106 such that simultaneous heating and cooling operations and/or simultaneous cooling and heating operations through the indoor unit 104 and the hydro unit 106 are performed.
  • the controller 202 of the heat pump 100 controls the first four-way valve 112 a to form a flow path a 1 -a 2 such that the heat pump 100 is operated in a heating mode. Also, the controller 202 controls the second four-way valve 112 b to form a flow path b 1 -b 2 such that a high-temperature, high-pressure refrigerant, discharged from the compressor 108 , does not flow to the indoor unit 104 . In addition, the controller 202 controls the third four-way valve 112 c to form a flow path c 1 -c 2 such that the high-temperature, high-pressure refrigerant, discharged from the compressor 108 , flows to the hydro unit 106 .
  • the high-temperature, high-pressure refrigerant, discharged from the compressor 108 is supplied to the hydro unit 106 , thereby performing air to water heating through the hydro unit 106 .
  • the refrigerant, heat-exchanged by the hydro unit 106 is supplied to the indoor unit 104 such that the refrigerant is used to perform an air to air cooling mode.
  • the first four-way valve 112 a , the second four-way valve 112 b , and the third four-way valve 112 c may be controlled such that air to water heating and air to air cooling are simultaneously performed in the heat recovery heating mode.
  • opening degrees of the first expansion device 116 provided in the outdoor unit 102 and the second expansion device 120 provided in the indoor unit 104 may be controlled to adjust flow rate of the refrigerant introduced into the outdoor unit 102 and the indoor unit 104 . Consequently, an air to water heating capacity of the hydro unit 106 and an air to air cooling capacity of the indoor unit 104 may be freely combined without loss within a range equivalent to 100% the capacity of the outdoor unit 102 (In FIG. 3 , air to water heating>air to air cooling). Also, only the indoor unit 104 for the air to air mode is used without the provision of an additional indoor unit for the air to water mode, thereby greatly reduce product cost and installation cost, time, and labor.
  • the controller 202 of the heat pump 100 controls the first four-way valve 112 a to form a flow path a 1 -a 2 such that the heat pump 100 is operated in a heating mode. Also, the controller 202 controls the second four-way valve 112 b to form a flow path b 1 -b 3 such that a high-temperature, high-pressure refrigerant, discharged from the compressor 108 , flows to the indoor unit 104 . In addition, the controller 202 controls the third four-way valve 112 c to form a flow path c 1 -c 3 such that the high-temperature, high-pressure refrigerant, discharged from the compressor 108 , does not flow to the hydro unit 106 .
  • the high-temperature, high-pressure refrigerant, discharged from the compressor 108 is supplied to the indoor unit 104 , thereby performing air to air heating through the indoor unit 104 .
  • the refrigerant, temperature of which has been lowered due to heating operation of the indoor unit 104 is supplied to the hydro unit 106 such that the refrigerant is used to perform an air to water cooling mode.
  • the first four-way valve 112 a , the second four-way valve 112 b , and the third four-way valve 112 c may be controlled such that air to air heating and air to water cooling are simultaneously performed in the heat recovery heating mode.
  • opening degrees of the first expansion device 116 provided in the outdoor unit 102 and the third expansion device 124 provided in the hydro unit 106 may be controlled to adjust flow rate of the refrigerant introduced into the outdoor unit 102 and the hydro unit 106 . Consequently, an air to air heating capacity and an air to water cooling capacity may be freely combined without loss within a range equivalent to 100% the capacity of the outdoor unit 102 (In FIG. 4 , air to air heating>air to water cooling). Also, only the indoor unit 104 for the air to air mode is used without the provision of an additional indoor unit for the air to water mode, thereby greatly reduce product cost and installation cost, time, and labor.
  • the controller 202 of the heat pump 100 controls the first four-way valve 112 a to form a flow path a 1 -a 3 such that the heat pump 100 is operated in a cooling mode. Also, the controller 202 controls the second four-way valve 112 b to form a flow path b 1 -b 2 such that a high-temperature, high-pressure refrigerant, discharged from the compressor 108 , does not flow to the indoor unit 104 . In addition, the controller 202 controls the third four-way valve 112 c to form a flow path c 1 -c 2 such that the high-temperature, high-pressure refrigerant, discharged from the compressor 108 , flows to the hydro unit 106 .
  • the first four-way valve 112 a , the second four-way valve 112 b , and the third four-way valve 112 c may be controlled such that air to air cooling and air to water heating are simultaneously performed in the heat recovery cooling mode.
  • opening degrees of the first expansion device 116 provided in the outdoor unit 102 , the second expansion device 120 provided in the indoor unit 104 , and the third expansion device 124 provided in the hydro unit 106 may be controlled to adjust flow rate of the refrigerant introduced into the hydro unit 106 and the indoor unit 104 . Consequently, an air to water heating capacity and an air to air cooling capacity may be freely combined without loss within a range equivalent to 100% the capacity of the outdoor unit 102 (In FIG. 5 , air to air cooling>air to water heating). Also, only the indoor unit 104 for the air to air mode is used without the provision of an additional indoor unit for the air to water mode, thereby greatly reduce product cost and installation cost, time, and labor.
  • the controller 202 of the heat pump 100 controls the first four-way valve 112 a to form a flow path a 1 -a 3 such that the heat pump 100 is operated in a cooling mode. Also, the controller 202 controls the second four-way valve 112 b to form a flow path b 1 -b 3 such that a high-temperature, high-pressure refrigerant, discharged from the compressor 108 , flows to the indoor unit 104 . In addition, the controller 202 controls the third four-way valve 112 c to form a flow path c 1 -c 3 such that the high-temperature, high-pressure refrigerant, discharged from the compressor 108 , does not flow to the hydro unit 106 .
  • the high-temperature, high-pressure refrigerant, discharged from the compressor 108 is supplied to the indoor unit 104 , thereby performing air to air heating.
  • the high-temperature, high-pressure refrigerant, discharged from the compressor 108 is condensed by the outdoor heat exchanger 114 and is then supplied to the hydro unit 106 , thereby performing air to water cooling through the hydro unit 106 .
  • the refrigerant, temperature of which has been lowered by the indoor unit 104 is recovered to the compressor 108 via the hydro unit 106 .
  • the first four-way valve 112 a , the second four-way valve 112 b , and the third four-way valve 112 c may be controlled such that air to water cooling and air to air heating are simultaneously performed in the heat recovery cooling mode.
  • opening degrees of the first expansion device 116 provided in the outdoor unit 102 , the second expansion device 120 provided in the indoor unit 104 , and the third expansion device 124 provided in the hydro unit 106 may be controlled to adjust flow rate of the refrigerant introduced into the outdoor unit 102 and the indoor unit 104 . Consequently, an air to water cooling capacity and an air to air heating capacity may be freely combined without loss within a range equivalent to 100% the capacity of the outdoor unit 102 (In FIG. 6 , air to water cooling>air to air heating). Also, only the indoor unit 104 for the air to air mode is used without the provision of an additional indoor unit for the air to water mode, thereby greatly reduce product cost and installation cost, time, and labor.
  • FIGS. 7 to 9 are views showing heating modes of the heat pump according to an embodiment.
  • FIG. 7 is a view showing a heating mode to heat air in an air conditioning space through the indoor unit 104 (referred to as an air to air heating mode).
  • FIG. 8 is a view showing a heating mode to perform heating using heated water in the hydro unit 106 (referred to as an air to water heating mode).
  • FIG. 9 is a view showing a combination heating mode in which an air to air heating mode and an air to water heating mode are simultaneously performed.
  • the controller 202 of the heat pump 100 controls the first four-way valve 112 a to form a flow path a 1 -a 2 such that the heat pump 100 is operated in a heating mode. Also, the controller 202 controls the second four-way valve 112 b to form a flow path b 1 -b 3 such that a high-temperature, high-pressure refrigerant, discharged from the compressor 108 , flows to the indoor unit 104 . In addition, the controller 202 controls the third four-way valve 112 c to form a flow path c 1 -c 3 such that the refrigerant is circulated between the outdoor unit 102 and the indoor unit 104 .
  • the third expansion device 124 of the hydro unit 106 is closed such that the refrigerant, having passed through the indoor unit 104 , does not flow to the hydro unit 106 .
  • the high-temperature, high-pressure refrigerant, discharged from the compressor 108 is supplied only to the indoor unit 104 , thereby independently performing air to air heating through the indoor unit 104 .
  • only the air to air heating mode may be independently performed irrespective of the heat recovery cooling/heating modes.
  • the controller 202 of the heat pump 100 controls the first four-way valve 112 a to form a flow path a 1 -a 2 such that the heat pump 100 is operated in a heating mode. Also, the controller 202 controls the second four-way valve 112 b to form a flow path b 1 -b 2 such that a high-temperature, high-pressure refrigerant, discharged from the compressor 108 , does not flow to the indoor unit 104 .
  • controller 202 controls the third four-way valve 112 c to form a flow path c 1 -c 2 such that the high-temperature, high-pressure refrigerant, discharged from the compressor 108 , flows to the hydro unit 106 .
  • the high-temperature, high-pressure refrigerant, discharged from the compressor 108 is supplied only to the hydro unit 106 , thereby independently performing air to water heating through the hydro unit 106 .
  • only the air to water heating mode may be independently performed irrespective of the heat recovery cooling/heating modes.
  • the indoor unit 104 is not used since heating is performed using the hydro unit 106 .
  • the second four-way valve 112 b does not form a flow path b 1 -b 3 .
  • the refrigerant, discharged from the compressor 108 does not flow to the indoor unit 104 .
  • the amount of the refrigerant used for air to water heating is reduced in proportion to the amount of the refrigerant introduced into the indoor unit 104 , whereby air to water heating efficiency is lowered.
  • introduction of the refrigerant into the indoor unit 104 is interrupted by the second four-way valve 112 b , thereby preventing lowering of air to water heating efficiency.
  • the controller 202 of the heat pump 100 controls the first four-way valve 112 a to form a flow path a 1 -a 2 such that the heat pump 100 is operated in a heating mode. Also, the controller 202 controls the second four-way valve 112 b to form a flow path b 1 -b 3 such that a high-temperature, high-pressure refrigerant, discharged from the compressor 108 , flows to the indoor unit 104 .
  • the controller 202 controls the third four-way valve 112 c to form a flow path c 1 -c 2 such that the high-temperature, high-pressure refrigerant, discharged from the compressor 108 , flows to the hydro unit 106 .
  • the high-temperature, high-pressure refrigerant, discharged from the compressor 108 is supplied to both the indoor unit 104 and the hydro unit 106 , thereby simultaneously performing air to air heating through the indoor unit 104 and air to water heating through the hydro unit 106 .
  • the combination heating mode of the air to air heating mode and the air to water heating mode may be performed irrespective of the heat recovery cooling/heating modes.
  • opening degrees of the first expansion device 116 provided in the outdoor unit 102 and the second expansion device 120 provided in the indoor unit 104 may be controlled to adjust flow rate of the refrigerant introduced into the outdoor unit 102 and the indoor unit 104 . Consequently, an air to water heating capacity and an air to air heating capacity may be freely combined without loss within a range equivalent to 100% the capacity of the outdoor unit 102 .
  • the controller 202 controls all flow paths of the third four-way valve 112 c to be closed while controlling the second four-way valve 112 b to form the flow path b 1 -b 3 such that the supply of the refrigerant to the hydro unit 106 is interrupted, thereby performing air to air heating first.
  • the controller 202 controls all flow paths of the second four-way valve 112 b to be closed and the third four-way valve 112 c to form the flow path c 1 -c 2 , thereby performing air to water heating.
  • FIGS. 10 to 12 are views showing cooling modes of the heat pump according to an embodiment.
  • FIG. 10 is a view showing a cooling mode to cool air in an air conditioning space through the indoor unit 104 to lower temperature in the air conditioning space (referred to as an air to air cooling mode).
  • FIG. 11 is a view showing a cooling mode to perform cooling using cooled water in the hydro unit 106 (referred to as an air to water cooling mode).
  • FIG. 12 is a view showing a combination cooling mode in which an air to air cooling mode and an air to water cooling mode are simultaneously performed.
  • the controller 202 of the heat pump 100 controls the first four-way valve 112 a to form a flow path a 1 -a 3 such that the heat pump 100 is operated in a cooling mode. Also, the controller 202 controls the second four-way valve 112 b to form a flow path b 1 -b 2 such that a high-temperature, high-pressure refrigerant, discharged from the compressor 108 , does not flow to the indoor unit 104 .
  • the controller 202 controls the third four-way valve 112 c to form a flow path c 1 -c 3 such that the high-temperature, high-pressure refrigerant, discharged from the compressor 108 , does not flow to the hydro unit 106 .
  • the third expansion device 124 of the hydro unit 106 is completely closed such that the refrigerant, discharged from the compressor 108 and condensed by the outdoor heat exchanger 114 , is supplied only to the indoor unit 104 , thereby independently performing air to air cooling through the indoor unit 104 .
  • only the air to air cooling mode may be independently performed irrespective of the heat recovery cooling/heating modes.
  • the controller 202 of the heat pump 100 controls the first four-way valve 112 a to form a flow path a 1 -a 3 such that the heat pump 100 is operated in a cooling mode. Also, the controller 202 controls the second four-way valve 112 b to form a flow path b 1 -b 2 such that a high-temperature, high-pressure refrigerant, discharged from the compressor 108 , does not flow to the indoor unit 104 .
  • the controller 202 controls the third four-way valve 112 c to form a flow path c 1 -c 3 such that the high-temperature, high-pressure refrigerant, discharged from the compressor 108 , does not flow to the hydro unit 106 .
  • the second expansion device 120 of the indoor unit 104 is completely closed such that the refrigerant, discharged from the compressor 108 and condensed by the outdoor heat exchanger 114 , is supplied only to the hydro unit 106 , thereby independently performing air to water cooling through the hydro unit 106 .
  • only the air to water cooling mode may be independently performed irrespective of the heat recovery cooling/heating modes.
  • the controller 202 of the heat pump 100 controls the first four-way valve 112 a to form a flow path a 1 -a 3 such that the heat pump 100 is operated in a cooling mode. Also, the controller 202 controls the second four-way valve 112 b to form a flow path b 1 -b 2 such that a high-temperature, high-pressure refrigerant, discharged from the compressor 108 , does not flow to the indoor unit 104 .
  • the controller 202 controls the third four-way valve 112 c to form a flow path c 1 -c 3 such that the refrigerant, discharged from the compressor 108 and condensed by the outdoor heat exchanger 114 , is supplied to the hydro unit 106 .
  • the high-temperature, high-pressure refrigerant, discharged from the compressor 108 is supplied to both the indoor unit 104 and the hydro unit 106 , thereby simultaneously performing air to air cooling through the indoor unit 104 and air to water cooling through the hydro unit 106 .
  • the combination cooling mode of the air to air cooling mode and the air to water cooling mode may be performed irrespective of the heat recovery cooling/heating modes.
  • FIG. 13 is a view showing flow path switching of the first four-way valve 112 a , the second four-way valve 112 b , and the third four-way valve 112 c in the respective operation modes of the heat pump shown in FIGS. 3 to 12 .
  • FIG. 14 is a view showing a heat pump 100 according to an embodiment.
  • the heat pump 100 includes an outdoor unit 102 , an indoor unit 104 , and a hydro unit 106 .
  • the outdoor unit 102 , the indoor unit 104 , and the hydro unit 106 are connected to one another via a refrigerant pipe to constitute a refrigerant cycle.
  • the outdoor unit 102 includes a compressor 108 , an accumulator 110 , refrigerant flow path switching members 112 a , 112 b , and 112 d , an outdoor heat exchanger 114 , and a first expansion device 116 .
  • the refrigerant flow path switching members 112 a , 112 b , and 112 c include a first four-way valve 112 a , a second four-way valve 112 b , and a one-way valve 112 d .
  • the first expansion device 116 is realized by an electronic expansion valve. The first expansion device 116 expands a refrigerant, adjusts flow rate of the refrigerant, and interrupts flow of the refrigerant as needed.
  • the one-way valve 112 d is not limited to a valve, through which a fluid flows only in one direction.
  • the other pots) of a two-way valve, a three-way valve, or a four-way valve may be closed such that the two-way valve, the three-way valve, or the four-way valve functions as a one-way valve.
  • the compressor 108 compresses a low-temperature, low-pressure refrigerant, suctioned through an inlet port 108 a , and discharges a high-temperature, high-pressure refrigerant through an outlet port 108 b .
  • the compressor 108 may include a single inverter compressor, the compression capacity of which is changed depending upon input frequencies, or a plurality of constant-speed compressors having a fixed compression capacity.
  • the inlet port 108 a of the compressor 108 is connected to the accumulator 110 .
  • the outlet port 108 b of the compressor 108 is connected to the first four-way valve 112 a , the second four-way valve 112 b , and the one-way valve 112 d .
  • the first four-way valve 112 a and the second four-way valve 112 b are also connected to the accumulator 110 .
  • the refrigerant flow path switching members 112 a , 112 b , and 112 d include the first four-way valve 112 a , the second four-way valve 112 b , and the one-way valve 112 d .
  • the refrigerant flow path switching members 112 a , 112 b , and 112 d selectively switch refrigerant flow paths in a heat recovery mode, a heating mode, and a cooling mode to secure refrigerant flow paths corresponding to the respective modes.
  • the first four-way valve 112 a performs switching between a flow path a 1 -a 3 between the outlet port 108 b of the compressor 108 and the outdoor heat exchanger 114 and a flow path a 1 -a 2 between the inlet port 108 a of the compressor 108 and the outdoor heat exchanger 114 .
  • the second four-way valve 112 b performs switching between a flow path b 1 -b 3 between the outlet port 108 b of the compressor 108 and the indoor unit 104 and a flow path b 1 -b 2 between the inlet port 108 a of the compressor 108 and the indoor unit 104 .
  • the one-way valve 112 d opens or closes a flow path d 1 -d 2 between the outlet port 108 b of the compressor 108 and the hydro unit 106 .
  • Each of the four-way valves 112 a and 112 b has four ports, through which a refrigerant flows. In this embodiment, one of the ports is closed, and the other three ports are used. In FIG. 14 , one port of each of the four-way valves 112 a and 112 b denoted by X is closed. In this embodiment, therefore, three-way valves, each of which has a three port, may be used, or other valves functioning as the three-way valves may be also used.
  • the refrigerant flow path switching members 112 a , 112 b , and 112 d may be disposed inside or outside the outdoor unit 102 .
  • the outdoor heat exchanger 114 functions as a condenser in a cooling mode and as an evaporator in a heating mode.
  • the first expansion device 116 is connected to one side of the outdoor heat exchanger 114 .
  • At the outdoor heat exchanger 114 may be mounted an outdoor fan (not shown) to improve heat exchange efficiency between a refrigerant and outdoor air.
  • the indoor unit 104 includes an indoor heat exchanger 118 and a second expansion device 120 .
  • the indoor heat exchanger 118 functions as an evaporator in a cooling mode and as a condenser in a heating mode.
  • the second expansion device 120 is connected to one side of the indoor heat exchanger 118 .
  • the second expansion device 120 is realized by an electronic expansion valve.
  • the second expansion device 120 expands a refrigerant, adjusts flow rate of the refrigerant, and interrupts flow of the refrigerant as needed.
  • Another expansion device to perform the above functions may be used.
  • At the indoor heat exchanger 118 may be mounted an indoor fan (not shown) to improve heat exchange efficiency between a refrigerant and indoor air. According to circumstances, two or more indoor units 104 may be provided.
  • the hydro unit 106 heats water through heat exchange between a refrigerant and water such that the heated water is used for heating.
  • the hydro unit 106 includes a hot water heat exchanger 122 and a third expansion device 124 .
  • Refrigerant heat exchange plates, through which a refrigerant flows, and water heat exchange plates, through which water flows, are alternately arranged in the hot water heat exchanger 122 .
  • Hot water is generated through heat exchange between the refrigerant heat exchange plates and the water heat exchange plates.
  • a refrigerant, compressed by the compressor 108 is directly supplied to the hot water heat exchanger 122 of the hydro unit 106 .
  • the hot water generated by the hydro unit 106 is supplied to a water supply tank 126 , a fan coil unit 128 , and floor heating device 130 such that the hot water is used for hot water supply and heating.
  • the third expansion device 124 is realized by an electronic expansion valve. The third expansion device 124 expands a refrigerant, adjusts flow rate of the refrigerant, and interrupts flow of the refrigerant as needed. Another expansion device to perform the above functions may be used.
  • FIG. 15 is a view showing a control system of the heat pump shown in FIG. 14 .
  • a controller 202 controls operations of the compressor 108 , the first expansion device 116 , the second expansion device 120 , the third expansion device 124 , the first four-way valve 112 a , the second four-way valve 112 b , and the one-way valve 112 d based on signals input from a sensor 204 and a remote controller 206 .
  • the heat pump 100 performs a heating mode operation, a cooling mode operation, and a heat recovery mode operation according to the control of the controller 202 .
  • an air to air mode is a cooling/heating mode using the indoor unit 104 .
  • cooling/heating is performed through heat exchange between a refrigerant and air in the indoor unit 104 .
  • an air to water mode is a heating mode using the hydro unit 106 .
  • heating is performed through heat exchange between a refrigerant and water in the hot water heat exchanger 122 of the hydro unit 106 .
  • heat exchange may be performed between air and the water having been heat-exchanged with the refrigerant to perform heating.
  • FIGS. 16 and 17 are views showing heat recovery heating and cooling modes of the heat pump according to an embodiment.
  • FIG. 16 shows a heat recovery heating mode
  • FIG. 17 shows a heat recovery cooling mode.
  • FIG. 16 is a view showing a refrigerant cycle in a heat recovery heating mode when a heating capacity in an air to water heating mode is greater than a cooling capacity in an air to air cooling mode (air to water heating>air to air cooling)
  • FIG. 17 is a view showing a refrigerant cycle in a heat recovery cooling mode when a cooling capacity in an air to air cooling mode is greater than a heating capacity in an air to water heating mode (air to air cooling>air to water heating).
  • FIG. 16 shows a heat recovery heating mode
  • FIG. 17 shows a heat recovery cooling mode.
  • the controller 202 controls the refrigerant flow path switching members 112 a , 112 b , and 112 d to switch the refrigerant flow paths among the compressor 108 , the outdoor heat exchanger 114 , the indoor unit 104 , and the hydro unit 106 such that cooling and heating operations through the indoor unit 104 and the hydro unit 106 are simultaneously performed.
  • the controller 202 of the heat pump 100 controls the first four-way valve 112 a to form a flow path a 1 -a 2 such that the heat pump 100 is operated in a heating mode. Also, the controller 202 controls the second four-way valve 112 b to form a flow path b 1 -b 2 such that a high-temperature, high-pressure refrigerant, discharged from the compressor 108 , does not flow to the indoor unit 104 . In addition, the controller 202 controls the one-way valve 112 d to form a flow path d 1 -d 2 such that the high-temperature, high-pressure refrigerant, discharged from the compressor 108 , flows to the hydro unit 106 .
  • the high-temperature, high-pressure refrigerant, discharged from the compressor 108 is supplied to the hydro unit 106 , thereby performing air to water heating through the hydro unit 106 .
  • the refrigerant, heat-exchanged by the hydro unit 106 is supplied to the indoor unit 104 such that the refrigerant is used to perform an air to air cooling mode.
  • the first four-way valve 112 a , the second four-way valve 112 b , and the one-way valve 112 d may be controlled such that air to water heating and air to air cooling are simultaneously performed in the heat recovery heating mode.
  • opening degrees of the first expansion device 116 provided in the outdoor unit 102 and the second expansion device 120 provided in the indoor unit 104 may be controlled to adjust flow rate of the refrigerant introduced into the outdoor unit 102 and the indoor unit 104 . Consequently, an air to water heating capacity of the hydro unit 106 and an air to air cooling capacity of the indoor unit 104 may be freely combined without loss within a range equivalent to 100% the capacity of the outdoor unit 102 (In FIG. 16 , air to water heating>air to air cooling). Also, only the indoor unit 104 for the air to air mode is used without the provision of an additional indoor unit for the air to water mode, thereby greatly reduce product cost and installation cost, time, and labor.
  • the controller 202 of the heat pump 100 controls the first four-way valve 112 a to form a flow path a 1 -a 3 such that the heat pump 100 is operated in a cooling mode. Also, the controller 202 controls the second four-way valve 112 b to form a flow path b 1 -b 2 such that a high-temperature, high-pressure refrigerant, discharged from the compressor 108 , does not flow to the indoor unit 104 . In addition, the controller 202 controls the one-way valve 112 d to form a flow path d 1 -d 2 such that the high-temperature, high-pressure refrigerant, discharged from the compressor 108 , flows to the hydro unit 106 .
  • the first four-way valve 112 a , the second four-way valve 112 b , and the one-way valve 112 d may be controlled such that air to air cooling and air to water heating are simultaneously performed in the heat recovery cooling mode.
  • opening degrees of the first expansion device 116 provided in the outdoor unit 102 , the second expansion device 120 provided in the indoor unit 104 , and the third expansion device 124 provided in the hydro unit 106 may be controlled to adjust flow rate of the refrigerant introduced into the hydro unit 106 and the indoor unit 104 . Consequently, an air to water heating capacity and an air to air cooling capacity may be freely combined without loss within a range equivalent to 100% the capacity of the outdoor unit 102 (In FIG. 18 , air to air cooling>air to water heating). Also, only the indoor unit 104 for the air to air mode is used without the provision of an additional indoor unit for the air to water mode, thereby greatly reduce product cost and installation cost, time, and labor.
  • FIGS. 18 to 20 are views showing heating modes of the heat pump according to an embodiment.
  • FIG. 18 is a view showing a heating mode to heat air in an air conditioning space through the indoor unit 104 (referred to as an air to air heating mode).
  • FIG. 19 is a view showing a heating mode to perform heating using heated water in the hydro unit 106 (referred to as an air to water heating mode).
  • FIG. 20 is a view showing a combination heating mode in which an air to air heating mode and an air to water heating mode are simultaneously performed.
  • the controller 202 of the heat pump 100 controls the first four-way valve 112 a to form a flow path a 1 -a 2 such that the heat pump 100 is operated in a heating mode. Also, the controller 202 controls the second four-way valve 112 b to form a flow path b 1 -b 3 such that a high-temperature, high-pressure refrigerant, discharged from the compressor 108 , flows to the indoor unit 104 such that the refrigerant is circulated between the outdoor unit 102 and the indoor unit 104 .
  • the one-way valve 112 d and the third expansion device 124 of the hydro unit 106 are closed such that the refrigerant, having passed through the indoor unit 104 , does not flow to the hydro unit 106 .
  • the high-temperature, high-pressure refrigerant, discharged from the compressor 108 is supplied only to the indoor unit 104 , thereby independently performing air to air heating through the indoor unit 104 .
  • only the air to air heating mode may be independently performed irrespective of the heat recovery cooling/heating modes.
  • the controller 202 of the heat pump 100 controls the first four-way valve 112 a to form a flow path a 1 -a 2 such that the heat pump 100 is operated in a heating mode. Also, the controller 202 controls the second four-way valve 112 b to form a flow path b 1 -b 2 such that a high-temperature, high-pressure refrigerant, discharged from the compressor 108 , does not flow to the indoor unit 104 . In addition, the controller 202 controls the one-way valve 112 d to form a flow path d 1 -d 2 such that the high-temperature, high-pressure refrigerant, discharged from the compressor 108 , flows to the hydro unit 106 . As a result, the high-temperature, high-pressure refrigerant, discharged from the compressor 108 , is supplied only to the hydro unit 106 , thereby independently performing air to water heating through the hydro unit 106 .
  • only the air to water heating mode may be independently performed irrespective of the heat recovery cooling/heating modes.
  • the indoor unit 104 is not used since heating is performed using the hydro unit 106 .
  • the second four-way valve 112 b does not form a flow path b 1 -b 3 .
  • the refrigerant, discharged from the compressor 108 does not flow to the indoor unit 104 .
  • the amount of the refrigerant used for air to water heating is reduced in proportion to the amount of the refrigerant introduced into the indoor unit 104 , whereby air to water heating efficiency is lowered.
  • introduction of the refrigerant into the indoor unit 104 is interrupted by the second four-way valve 112 b , thereby preventing lowering of air to water heating efficiency.
  • the controller 202 of the heat pump 100 controls the first four-way valve 112 a to form a flow path a 1 -a 2 such that the heat pump 100 is operated in a heating mode. Also, the controller 202 controls the second four-way valve 112 b to form a flow path b 1 -b 3 such that a high-temperature, high-pressure refrigerant, discharged from the compressor 108 , flows to the indoor unit 104 .
  • the controller 202 controls the one-way valve 112 d to form a flow path d 1 -d 2 such that the high-temperature, high-pressure refrigerant, discharged from the compressor 108 , flows to the hydro unit 106 .
  • the high-temperature, high-pressure refrigerant, discharged from the compressor 108 is supplied to both the indoor unit 104 and the hydro unit 106 , thereby simultaneously performing air to air heating through the indoor unit 104 and air to water heating through the hydro unit 106 .
  • the combination heating mode of the air to air heating mode and the air to water heating mode may be performed irrespective of the heat recovery cooling/heating modes.
  • opening degrees of the first expansion device 116 provided in the outdoor unit 102 and the second expansion device 120 provided in the indoor unit 104 may be controlled to adjust flow rate of the refrigerant introduced into the outdoor unit 102 and the indoor unit 104 . Consequently, an air to water heating capacity and an air to air heating capacity may be freely combined without loss within a range equivalent to 100% the capacity of the outdoor unit 102 .
  • the controller 202 controls all flow paths of the one-way valve 112 d to be closed while controlling the second four-way valve 112 b to form the flow path b 1 -b 3 such that the supply of the refrigerant to the hydro unit 106 is interrupted, thereby performing air to air heating first.
  • the controller 202 controls all flow paths of the second four-way valve 112 b to be closed and the one-way valve 112 d to form the flow path d 1 -d 2 , thereby performing air to water heating.
  • FIG. 21 is a view showing a cooling mode of the heat pump according to an embodiment. Specifically, FIG. 21 is a view showing a cooling mode to cool air in an air conditioning space through the indoor unit 104 to lower temperature in the air conditioning space (referred to as an air to air cooling mode).
  • the controller 202 of the heat pump 100 controls the first four-way valve 112 a to form a flow path a 1 -a 3 such that the heat pump 100 is operated in a cooling mode. Also, the controller 202 controls the second four-way valve 112 b to form a flow path b 1 -b 2 such that a high-temperature, high-pressure refrigerant, discharged from the compressor 108 , does not flow to the indoor unit 104 . In addition, the controller 202 controls the one-way valve 112 to be closed such that the high-temperature, high-pressure refrigerant, discharged from the compressor 108 , does not flow to the hydro unit 106 .
  • the third expansion device 124 of the hydro unit 106 is completely closed such that the refrigerant, discharged from the compressor 108 and condensed by the outdoor heat exchanger 114 , is supplied only to the indoor unit 104 , thereby independently performing air to air cooling through the indoor unit 104 .
  • only the air to air cooling mode may be independently performed irrespective of the heat recovery cooling/heating modes.
  • FIG. 22 is a view showing flow path switching of the first four-way valve 112 a , the second four-way valve 112 b , and the one-way valve 112 d in the respective operation modes of the heat pump shown in FIGS. 16 to 21 .
  • an air to air mode which is a cooling/heating mode using the indoor unit
  • an air to water mode which is a cooling/heating mode using the hydro unit, may be simultaneously performed in a heat recovery mode of the heat pump.
  • an air to air mode which is a cooling/heating mode using the indoor unit
  • an air to water mode which is a cooling/heating mode using the hydro unit, may be independently performed irrespective of the heat recovery mode of the heat pump.
  • an introduction of a refrigerant into the indoor unit, which is not operated, may be prevented when an air to water heating mode, which is a heating mode using the hydro unit, is performed irrespective of the heat recovery mode of the heat pump, thereby preventing efficiency of the indoor unit from being lowered due to the refrigerant collected in the indoor unit when the indoor unit is operated.
  • only heating may be performed in an air to water mode using the hydro unit.
  • the refrigerant flow path switching member provided between the hydro unit and the compressor may be constituted by a one-way valve, thereby reducing cost and simplifying the structure of the heat pump.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
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  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)
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US20160084535A1 (en) * 2014-09-18 2016-03-24 Fujitsu General Limited Outdoor unit of air conditioner and air conditioner
WO2016025498A3 (en) * 2014-08-11 2016-05-19 Wong Lee Wa Water-cooled split air conditioning system
US20160153687A1 (en) * 2014-12-01 2016-06-02 David Deng Additive heat unit for hvac heat pump system
JP2017020681A (ja) * 2015-07-08 2017-01-26 ダイキン工業株式会社 空調給湯システム
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CN106642855A (zh) * 2016-11-16 2017-05-10 南京航空航天大学 机载蒸发循环制冷综合热管理系统及其方法与应用
CN106766722A (zh) * 2016-12-27 2017-05-31 浙江省能源与核技术应用研究院 颗粒状农林产品热泵干燥储存一体仓
US10288328B2 (en) * 2015-07-22 2019-05-14 Gd Midea Heating & Ventilating Equipment Co., Ltd. Outdoor unit for VRF air conditioning system and VRF air conditioning system having same
US11175074B1 (en) * 2020-08-04 2021-11-16 Mitsubishi Electric Us, Inc. Refrigeration cycle device and method of operating refrigeration cycle device
US20220010978A1 (en) * 2020-07-13 2022-01-13 Rheem Manufacturing Company Integrated space conditioning and water heating/cooling systems and methods thereto
US11313597B2 (en) * 2017-05-12 2022-04-26 Carrier Corporation Heat pump and control method thereof
US11371735B2 (en) * 2017-04-25 2022-06-28 Samsung Electronics Co., Ltd. Air conditioning system and method of controlling the same
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AT513855B1 (de) * 2013-08-29 2014-08-15 Vossloh Kiepe Ges M B H Verfahren zum Steuern einer Klimaanlage
CN106247675A (zh) * 2016-08-16 2016-12-21 重庆美的通用制冷设备有限公司 热泵系统
CN108662810A (zh) * 2017-03-28 2018-10-16 开利公司 水力控制模块及热回收水系统
CN114061168A (zh) * 2020-07-31 2022-02-18 开利公司 热泵系统及其控制方法
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CN114562829B (zh) * 2020-11-27 2024-05-14 苏州三星电子有限公司 一种带水力机组具有热回收功能的中央空调装置

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US20150285545A1 (en) * 2012-12-20 2015-10-08 Mitsubishi Electric Corporation Air-conditioning apparatus
US20170082334A1 (en) * 2014-05-30 2017-03-23 Mitsubishi Electric Corporation Air-conditioning apparatus
US10451324B2 (en) * 2014-05-30 2019-10-22 Mitsubishi Electric Corporation Air-conditioning apparatus
US9933170B2 (en) 2014-08-11 2018-04-03 Lee Wa Wong Water-cooled split air conditioning system
WO2016025498A3 (en) * 2014-08-11 2016-05-19 Wong Lee Wa Water-cooled split air conditioning system
US20160084535A1 (en) * 2014-09-18 2016-03-24 Fujitsu General Limited Outdoor unit of air conditioner and air conditioner
US9909784B2 (en) * 2014-09-18 2018-03-06 Fujitsu General Limited Outdoor unit of air conditioner and air conditioner
US9822996B2 (en) * 2014-12-01 2017-11-21 David Deng Additive heat unit for HVAC heat pump system
US20160153687A1 (en) * 2014-12-01 2016-06-02 David Deng Additive heat unit for hvac heat pump system
JP2017020681A (ja) * 2015-07-08 2017-01-26 ダイキン工業株式会社 空調給湯システム
US10288328B2 (en) * 2015-07-22 2019-05-14 Gd Midea Heating & Ventilating Equipment Co., Ltd. Outdoor unit for VRF air conditioning system and VRF air conditioning system having same
CN106642855A (zh) * 2016-11-16 2017-05-10 南京航空航天大学 机载蒸发循环制冷综合热管理系统及其方法与应用
CN106766722A (zh) * 2016-12-27 2017-05-31 浙江省能源与核技术应用研究院 颗粒状农林产品热泵干燥储存一体仓
US11371735B2 (en) * 2017-04-25 2022-06-28 Samsung Electronics Co., Ltd. Air conditioning system and method of controlling the same
US11313597B2 (en) * 2017-05-12 2022-04-26 Carrier Corporation Heat pump and control method thereof
US20220010978A1 (en) * 2020-07-13 2022-01-13 Rheem Manufacturing Company Integrated space conditioning and water heating/cooling systems and methods thereto
US11739952B2 (en) * 2020-07-13 2023-08-29 Rheem Manufacturing Company Integrated space conditioning and water heating/cooling systems and methods thereto
US11175074B1 (en) * 2020-08-04 2021-11-16 Mitsubishi Electric Us, Inc. Refrigeration cycle device and method of operating refrigeration cycle device
US11892203B2 (en) 2020-08-04 2024-02-06 Mitsubishi Electric Us, Inc. Method of operating refrigeration cycle device
US11781760B2 (en) 2020-09-23 2023-10-10 Rheem Manufacturing Company Integrated space conditioning and water heating systems and methods thereto

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Owner name: SAMSUNG ELECTRONICS CO., LTD., KOREA, REPUBLIC OF

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:KIM, SUNG TAE;KIM, SUNG GOO;SHIN, SE HOON;AND OTHERS;REEL/FRAME:029547/0538

Effective date: 20121228

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION