WO2016080463A1 - ヒートポンプ - Google Patents
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- Publication number
- WO2016080463A1 WO2016080463A1 PCT/JP2015/082457 JP2015082457W WO2016080463A1 WO 2016080463 A1 WO2016080463 A1 WO 2016080463A1 JP 2015082457 W JP2015082457 W JP 2015082457W WO 2016080463 A1 WO2016080463 A1 WO 2016080463A1
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- WIPO (PCT)
- Prior art keywords
- accumulator
- supercooler
- receiver
- outdoor unit
- view
- Prior art date
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
- F24F1/14—Heat exchangers specially adapted for separate outdoor units
- F24F1/16—Arrangement or mounting thereof
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
- F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
- F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
- F02M21/023—Valves; Pressure or flow regulators in the fuel supply or return system
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
- F24F1/08—Compressors specially adapted for separate outdoor units
- F24F1/10—Arrangement or mounting thereof
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
- F24F1/14—Heat exchangers specially adapted for separate outdoor units
- F24F1/18—Heat exchangers specially adapted for separate outdoor units characterised by their shape
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
- F24F1/46—Component arrangements in separate outdoor units
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B30/00—Heat pumps
- F25B30/02—Heat pumps of the compression type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B40/00—Subcoolers, desuperheaters or superheaters
- F25B40/02—Subcoolers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/40—Fluid line arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/02—Lubrication
- F04B39/0207—Lubrication with lubrication control systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
- F15B1/02—Installations or systems with accumulators
- F15B1/025—Installations or systems with accumulators used for thermal compensation, e.g. to collect expanded fluid and to return it to the system as the system fluid cools down
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B13/00—Compression machines, plants or systems, with reversible cycle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/04—Refrigeration circuit bypassing means
- F25B2400/0417—Refrigeration circuit bypassing means for the subcooler
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/06—Several compression cycles arranged in parallel
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/13—Economisers
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- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
Definitions
- the present invention relates to a heat pump, for example, an engine driven heat pump such as a gas engine and an electric drive heat pump.
- Patent Document 1 Japanese Patent Laid-Open No. 2002-310518
- This refrigeration apparatus includes a compressor, a condenser, an evaporator, and a supercooler, and the supercooler includes a plate heat exchanger, a shell and tube heat exchanger, and the like.
- the supercooler includes a plate heat exchanger, a shell and tube heat exchanger, and the like.
- the heat exchange capacity is increased and the refrigeration efficiency is increased.
- the present inventor has found the following problems in a heat pump having a supercooler (note that the following description is not a prior art and cannot be cited because the patentability of the present invention is denied).
- a plate heat exchanger having a large heat exchange capacity and high cooling efficiency may be employed as a supercooler.
- an accumulator for separating the gas refrigerant and the mist refrigerant may be provided.
- a subcooler that is not a plate heat exchanger can be provided in the receiver.
- the supercooler cannot be placed in the receiver, and the heat pump further replaces the receiver with a large volume with an accumulator and plate-type heat exchanger. It must be placed in a space other than the container placement space.
- a compact arrangement of the receiver, accumulator and plate heat exchanger is not known.
- an object of the present invention is to provide a compact heat pump when the supercooler is a plate heat exchanger.
- a heat pump provides a supercooler in the liquid refrigerant path downstream of the refrigerant flow from the receiver, an accumulator in the suction path of the compressor,
- a heat pump having an outdoor unit that provides an oil separator in a discharge path, and stores the receiver, the accumulator, the oil separator, and the supercooler in a package
- the supercooler is a plate heat exchanger
- two members of the receiver, the accumulator, the oil separator, and the supercooler are arranged on a straight line that is inclined to one side in the width direction of the outdoor unit with respect to the depth direction of the outdoor unit.
- the remaining two members of the receiver, the accumulator, the oil separator, and the supercooler are inclined to the other side in the width direction of the outdoor unit with respect to the depth direction of the outdoor unit. Placed on top In the plan view, each of the two members on the straight line inclined to the one side is adjacent to each of the remaining two members.
- a heat pump is a heat pump including an outdoor unit that houses in a package a supercooler provided downstream of the refrigerant flow from the receiver and an accumulator provided in a suction path of the compressor.
- the supercooler is a plate heat exchanger, In plan view, the accumulator is located between the compressor side and the subcooler in the width direction of the outdoor unit, In plan view, the supercooler overlaps the accumulator in the width direction of the outdoor unit.
- a compact heat pump can be realized when the supercooler is a plate heat exchanger.
- FIG. 4 is a plan view of the outdoor unit with the package removed, and is a view of the receiver, the accumulator, the oil separator, and the supercooler as viewed from directly above (above) in the outdoor unit with the package removed.
- a supercooler is provided in the liquid refrigerant path downstream of the refrigerant flow from the receiver, an accumulator is provided in the suction path of the compressor, and an oil separator is provided in the discharge path of the compressor.
- the supercooler is a plate heat exchanger, and in plan view, the receiver, the accumulator And two members of the oil separator and the supercooler are arranged on a straight line inclined on one side in the width direction of the outdoor unit with respect to the depth direction of the outdoor unit, and in the plan view, the receiver
- the remaining two members of the accumulator, the oil separator and the supercooler Are arranged on a straight line inclined to the other side in the width direction of the outdoor unit with respect to the depth direction of the outdoor unit, and each of the two members on the straight line inclined to the one side in the plan view is the remaining two members Are next to each other.
- plan view is a field of view (view) when the receiver, accumulator, oil separator and supercooler are viewed from directly above (above) Define.
- the requirement that the member is arranged on the straight line is satisfied if any part of the member overlaps the straight line in a plan view.
- the four members having a large volume can be densely arranged in a rectangular space in plan view. Therefore, a compact outdoor unit can be realized.
- the plate heat exchanger By arranging the plate heat exchanger in the gap when the receiver, accumulator and oil separator are provided, the space can be used efficiently.
- a heat pump is a heat pump including an outdoor unit that houses in a package a supercooler provided downstream of the refrigerant flow from the receiver and an accumulator provided in a suction path of the compressor.
- the supercooler is a plate heat exchanger, and in plan view, the accumulator is located between the compressor side and the supercooler in the width direction of the outdoor unit. The supercooler overlaps the accumulator in the width direction of the outdoor unit.
- overlapping in the width direction means overlapping when viewed from the width direction
- overlapping in the depth direction means overlapping when viewed from the depth direction
- the above planar view is defined as a visual field (view) when the accumulator and the subcooler are viewed from directly above (above) when the outdoor unit of the heat pump is placed on the horizontal surface in the posture in use.
- the width direction is defined as a direction in which a power source of an outdoor unit such as a gas engine is disposed adjacent to the outdoor unit.
- the supercooler is disposed on the side opposite to the compressor side of the accumulator in the width direction so as to overlap the accumulator in the width direction. Therefore, the space on the side opposite to the compressor side in the width direction of the accumulator having a large volume, which tends to be a dead space, can be effectively used. Therefore, a compact outdoor unit can be realized despite the adoption of a plate heat exchanger having a large volume as the subcooler.
- FIG. 1 is a simplified refrigerant circuit diagram of a gas engine driven heat pump according to an embodiment of the present invention.
- the heat pump includes an outdoor unit 50, an indoor unit 100, a gas refrigerant pipe 110, and a liquid refrigerant pipe 120.
- the heat pump also includes a control device 60 for the outdoor unit 50.
- the dotted line shown with 80 in FIG. 1 has shown the package of the outdoor unit 50.
- each of the gas refrigerant tube 110 and the liquid refrigerant tube 120 connects the outdoor unit 50 and the indoor unit 100.
- the outdoor unit 50 includes a first compressor 1, a second compressor 2, an oil separator 3, a four-way valve 4, a gas side closing valve 5, a gas side filter 6, a liquid side filter 9, a liquid side closing valve 10, and a first reverse valve. It has a check valve 11, a second check valve 12, a third check valve 13, a fourth check valve 14, a receiver 17 and a supercooler 18.
- the outdoor unit 50 includes a first electronic expansion valve 20, a second electronic expansion valve 21, a first outdoor heat exchanger 23, a second outdoor heat exchanger 24, an accumulator 26, a sub-evaporator (refrigerant auxiliary evaporator) 27, A third electronic expansion valve 35, a fourth electronic expansion valve 36, a solenoid valve 38, and a fifth check valve 39 are provided.
- the indoor unit 100 includes an indoor heat exchanger 8.
- the control device 60 includes a first compressor 1, a second compressor 2, a four-way valve 4, a first electronic expansion valve 20, a second electronic expansion valve 21, a third electronic expansion valve 35, a fourth electronic expansion valve 36, and an electromagnetic device.
- a control signal is output to the valve 38 to control these devices.
- the control device 60 is electrically connected to each of these devices via signal lines.
- the first compressor 1, the second compressor 2, the gas side closing valve 5, the liquid side closing valve 10, the gas side filter 6 and the liquid side filter 9 are placed in a package 80 of the outdoor unit 50. Is provided.
- the receiver 17, the accumulator 26, the oil separator 3, and the supercooler 18 are also provided in the package 80 of the outdoor unit 50.
- the first compressor 1, the second compressor 2, the gas side closing valve 5, the liquid side closing valve 10, the gas side filter 6 and the liquid side filter 9 are disposed in the same chamber defined by the package 80.
- the receiver 17, the accumulator 26, the oil separator 3 and the supercooler 18 are also arranged in the room.
- the package 80 is a case constituted by a plurality of outer plates, for example.
- the first compressor 1 and the second compressor 2 are arranged in parallel, and the discharge side lines of the first and second compressors 1, 2 are the refrigerant inlet of the oil separator 3. It is connected to the.
- the oil separator 3 is provided in the discharge path of the compressors 1 and 2.
- the refrigerant outlet side of the oil separator 3 is connected to the first port 30 of the four-way valve 4.
- the second port 31 of the four-way valve 4 is connected to the gas side port of the indoor heat exchanger 8 via the gas side closing valve 5 and the gas side filter 6.
- the gas side filter 6 is disposed on the indoor unit 100 side of the gas side shut-off valve 5 and in the package 80 of the outdoor unit 50.
- the liquid side port of the indoor heat exchanger 8 is connected to the refrigerant outflow side port of the first check valve 11 and the refrigerant inflow side of the second check valve 12 via the liquid side filter 9 and the liquid side closing valve 10. It is connected to a line 25 connecting the port.
- the liquid side filter 9 is disposed on the indoor unit 100 side of the liquid side closing valve 10 and in the package 80 of the outdoor unit 50.
- the refrigerant outflow side port of the first check valve 11 is connected to the refrigerant inflow side port of the receiver 17 via a line 55.
- the refrigerant outflow side port of the receiver 17 is connected to the refrigerant inflow side ports of the second and fourth check valves 12 and 14 via the supercooler 18.
- the subcooler 18 is provided in the liquid refrigerant path downstream of the refrigerant flow from the receiver 17.
- the refrigerant outflow side port of the fourth check valve 14 and the refrigerant inflow side port of the third check valve 13 are connected by a line 56.
- the first and second electronic expansion valves 20 and 21 are connected in parallel to a line 57 branched from the line 56.
- the first and second outdoor heat exchangers 23 and 24 are connected in parallel to a line 58 extending from a side different from the check valve 13 and 14 connection side of the first and second electronic expansion valves 20 and 21. Yes.
- the first and second electronic expansion valves 20 and 21 are connected in series to the first and second outdoor heat exchangers 23 and 24.
- the line 59 coming out from a side different from the connection side of the electronic expansion valves 20 and 21 of the first and second outdoor heat exchangers 23 and 24 is connected to the third port 32 of the four-way valve 4.
- the fourth port 33 of the four-way valve 4 is connected to the accumulator 26.
- the accumulator 26 is connected to the suction side of the compressors 1 and 2.
- the accumulator 26 is provided in the suction path of the compressors 1 and 2.
- the port on the refrigerant inflow side of the fourth check valve 14 is connected to the sub-evaporator 27 via the third electronic expansion valve 35.
- the side different from the connection side of the fourth check valve 14 of the sub-evaporator is connected to a line 61 connecting the fourth port 33 of the four-way valve and the accumulator 26.
- a new line 63 branches off from the line 62 connecting the refrigerant inflow side port of the fourth check valve 14 and the third electronic expansion valve 35.
- the branched line 63 is connected to the supercooler 18 via the fourth electronic expansion valve 36.
- the supercooler 18 is directly connected to a line 40 connecting the accumulator 26 and the compressors 1 and 2 via a line 41.
- the refrigerant that has passed through the subcooler 18 flows through the line 41 toward the compressors 1 and 2 after passing through the subcooler 18.
- the solenoid valve 38 and the fifth check valve 39 are disposed on the path of the branched line 53.
- the electromagnetic valve 38 is located on the outdoor heat exchanger 23, 24 side of the fifth check valve 39 on the line 53.
- the control device 60 controls the electromagnetic valve 38 to be fully opened and fully closed.
- this heat pump performs air conditioning operation as follows.
- control device 60 controls the four-way valve 4 to connect the first port 30 and the second port 31 of the four-way valve 4 and to connect the third port 32 and the fourth port 33. .
- the high-pressure refrigerant gas discharged from the compressors 1 and 2 first flows into the oil separator 3.
- the oil separator 3 separates the lubricating oil of the compressors 1 and 2 from the refrigerant gas.
- the lubricating oil separated from the refrigerant gas by the oil separator 3 is returned to the compressors 1 and 2 through a line (not shown).
- the gas side shut-off valve 5 is a valve that is manually opened and closed (a tool may be used).
- the gas-side closing valve 5 is closed mainly when the outdoor unit 50 is connected to the indoor unit 100 during construction.
- the gas side shut-off valve 5 plays a role of preventing foreign matters from entering the outdoor unit 50 during construction.
- the gas side filter 6 has the role which removes the foreign material from the exterior at the time of construction.
- the gas side filter 6 is provided to protect the outdoor unit 50.
- the gas refrigerant liquefies itself by giving heat to the indoor heat exchanger 8 to become a liquid refrigerant. Thereafter, the liquid refrigerant flows into the receiver 17 through the liquid side filter 9, the liquid side closing valve 10, and the first check valve 11 in this order.
- the liquid side shut-off valve 10 is a valve that is manually opened and closed (a tool may be used).
- the liquid side shut-off valve 10 is mainly closed when the outdoor unit 50 is connected to the indoor unit 100 during construction.
- the liquid side shut-off valve 10 plays a role of preventing foreign matters from entering the outdoor unit 50 during construction.
- the liquid side filter 9 plays a role of removing foreign matters from outside during construction.
- the liquid side filter 9 is provided to protect the outdoor unit 50.
- the receiver 17 has a role of storing the liquid refrigerant. Thereafter, the liquid refrigerant passes through the bottom of the receiver 17, passes through the subcooler 18, passes through the fourth check valve 14, and flows toward the first and second electronic expansion valves 20 and 21.
- the pressure of the liquid refrigerant that has escaped from the bottom of the receiver 17 depends on the path pressure loss, the pressure of the liquid refrigerant on the outflow side of the second check valve 12, and the liquid on the outflow side of the first and third check valves 11 and 13.
- the pressure is lower than the refrigerant pressure.
- the liquid refrigerant that has passed through the bottom of the receiver 17 basically does not pass through the second check valve 12 or the third check valve 13.
- the liquid refrigerant is expanded by the first and second electronic expansion valves 20, 21 and sprayed to form a mist.
- the opening degree of the first and second electronic expansion valves 20, 21 is freely controlled by the control device 60. Note that the pressure of the refrigerant is high before passing through the first and second electronic expansion valves 20, 21, and becomes low after passing through the first and second electronic expansion valves 20, 21.
- the mist-like wet liquid refrigerant exchanges heat with the outside air by the first and second outdoor heat exchangers 23 and 24, and heats the outside air to gasify it.
- the refrigerant gives heat to the indoor heat exchanger 8, while being given heat from the outdoor heat exchangers 23 and 24.
- the gasified refrigerant passes through the four-way valve 4 and reaches the accumulator 26.
- the accumulator 26 separates the gas refrigerant and the mist refrigerant and completely gasifies the refrigerant. If the refrigerant in the mist state returns to the compressors 1 and 2, the sliding parts of the compressors 1 and 2 may be damaged.
- the accumulator 26 also plays a role of preventing such a situation. Thereafter, the refrigerant gas that has passed through the accumulator 26 flows into the suction ports of the compressors 1 and 2.
- the third electronic expansion valve 35 When the third electronic expansion valve 35 is partially or completely opened by the control from the control device 60, a part of the liquid refrigerant that has passed through the supercooler 18 is atomized by the third electronic expansion valve 35. Then, it flows into the sub-evaporator 27.
- the sub-evaporator 27 is introduced with warm cooling water for the gas engine (cooling water at 60 ° C. to 90 ° C.).
- the mist-like liquid refrigerant that has flowed into the sub-evaporator 27 indirectly exchanges heat with the warm cooling water to become a gas, and then reaches the accumulator 26. In this way, the heat transfer performance is enhanced. Note that, during the heating operation, the fourth electronic expansion valve 36 is controlled to be fully closed.
- control device 60 controls the four-way valve 4 to connect the first port 30 and the third port 32 of the four-way valve 4 and to connect the second port 31 and the fourth port 33.
- the heat flow will be briefly described.
- the gas refrigerant discharged from the first and second compressors 1, 2 passes through the oil separator 3, then passes through the four-way valve 4, and the first and second outdoor heat exchangers 23, 24 is reached.
- the refrigerant since the temperature of the refrigerant is high, the refrigerant is cooled by the first and second outdoor heat exchangers 23 and 24 even in hot summer air (30 to 40 degrees air).
- the gas refrigerant is deprived of heat by the first and second outdoor heat exchangers 23 and 24 and becomes liquid refrigerant.
- the control device 60 controls the opening degree of the first and second electronic expansion valves 20 and 21 to an appropriate opening degree, and controls the electromagnetic valve 38 to be fully opened.
- the liquid refrigerant that has passed through the first and second outdoor heat exchangers 23 and 24 basically passes through the electromagnetic valve 38 and the check valve 39 and reaches the receiver 17. Thereafter, the liquid refrigerant passes through the bottom of the receiver 17 and flows from between the second check valve 12 and the first check valve 11 toward the liquid side closing valve 10 via the supercooler 18.
- the liquid refrigerant flows into the indoor heat exchanger 8 via the liquid side closing valve 10 and the liquid side filter 9.
- the low-temperature liquid refrigerant flowing into the indoor heat exchanger 8 takes heat from the indoor heat exchanger 8 and cools indoor air, while being given heat from the indoor heat exchanger 8 and vaporized. In this way, the refrigerant removes heat from the indoor heat exchanger 8 while releasing heat to the first and second outdoor heat exchangers 23 and 24.
- the vaporized gas refrigerant passes through the gas side filter 6, the gas side closing valve 5, the four-way valve 4, and the accumulator 26 in this order, and flows into the suction ports of the compressors 1 and 2.
- the control device 60 when the control device 60 receives a signal from a user's remote control operation via a control device (not shown) and a signal line (not shown) of the indoor unit 100 when the summer is hot, the control device 60.
- the opening degree of the fourth electronic expansion valve 36 is controlled to an appropriate opening degree. Then, a part of the liquid refrigerant that has passed through the receiver 17 and the subcooler 18 is cooled by the passage of the fourth electronic expansion valve 36 and flows into the subcooler 18. In this way, the liquid refrigerant that has flowed from the receiver 17 into the subcooler 18 without passing through the fourth electronic expansion valve 36 and the liquid refrigerant that has passed through the fourth electronic expansion valve 36 and flowed into the subcooler 18. , Heat exchange.
- the liquid refrigerant sent to the indoor heat exchanger 8 is further cooled, while the liquid refrigerant that has passed through the fourth electronic expansion valve 36 is warmed and gasified to flow toward the compressors 1 and 2.
- the subcooler 18 is a plate heat exchanger. This heat pump uses a plate heat exchanger having a large heat exchange capacity as the supercooler 18 to increase the cooling performance.
- FIG. 2 is a perspective view showing the outdoor unit 50 with the package 80 removed, and is a perspective view showing a part of the internal structure of the outdoor unit 50.
- FIG. 2 is a perspective view showing the outdoor unit 50 with the package 80 removed, and is a perspective view showing a part of the internal structure of the outdoor unit 50.
- the oil separator 3, the receiver 17 and the four-way valve 4 are located on the back side of the paper surface, while the sub-evaporator 27, the accumulator 26, one of the two compressors 1, the liquid-side closing valve 10, the liquid The side filter 9, the gas side shut-off valve 5, and the gas side filter 6 are located on the front side of the page.
- reference numeral 81 designates a small flange (oval) for connecting a line from the four-way valve 4 to outdoor heat exchangers 1 and 2 (not shown in FIG. 2) arranged on the second floor.
- the reference numeral 82 indicates a small flange for connecting the lines from the outdoor heat exchangers 1 and 2 to the receiver 17 side.
- the accumulator 26 has a gas engine (on the one side of the width direction of the outdoor unit 50 indicated by an arrow A in FIG. 2 (hereinafter referred to as the width direction). (Not shown).
- FIG. 3 is a perspective view of a part of the outdoor unit 50 with the package 80 removed as viewed from the gas engine mounting side.
- reference number 83 is a flywheel of the gas engine
- reference number 84 is an electromagnetic clutch that interrupts power to the first compressor 1
- reference number 85 is a winding belt
- Reference numeral 86 is an electromagnetic clutch for switching power to the second compressor 2.
- the winding belt 85 is wound around the flywheel 83, the electromagnetic clutch 84 and the electromagnetic clutch 86.
- the rotational power of the gas engine is transmitted to the electromagnetic clutches 84 and 86 via the flywheel 83 and the winding belt 85, and the rotational power is transmitted from the electromagnetic clutches 84 and 86 to the compressors 1 and 2.
- FIG 4 is a plan view of the outdoor unit 50 with the package 80 removed.
- the receiver 17, the accumulator 26, the oil separator 3 and the supercooler 18 are directly above ( It is a figure when it sees from upper direction.
- 1 is a first compressor
- 2 is a second compressor
- 26 is an accumulator
- 3 is an oil separator
- 17 is a receiver
- 18 is a subcooler (plate type heat exchanger).
- An arrow A indicates the width direction
- an arrow B indicates the depth direction of the outdoor unit 50 (hereinafter, when referring to the depth direction, it indicates the depth direction of the outdoor unit 50).
- the oil separator 3 and the supercooler 18 are located on a straight line P ⁇ b> 1 that is inclined to one side in the width direction with respect to the depth direction in plan view.
- the straight line P1 is inclined by ⁇ 1 [°] ( ⁇ 1 ⁇ 90 [°]) on one side in the width direction.
- the accumulator 26 and the receiver 17 are located on a straight line P2 inclined to the other side in the width direction with respect to the depth direction.
- the straight line P2 is inclined by ⁇ 2 [°] ( ⁇ 2 ⁇ 90 [°]) on the other side in the width direction.
- the oil separator 3 and the supercooler 18 on the straight line P1 are arranged adjacent to the accumulator 26 and the receiver 17, respectively.
- the straight line P1 intersects the straight line P2 between the accumulator 26 and the receiver 17.
- the supercooler 18 and the accumulator 26 are located between the supercooler 18 and the compressors 1 and 2 in the width direction. In a plan view, the supercooler 18 overlaps the accumulator 26 in the width direction.
- each of the accumulator 26, the oil separator 3 and the receiver 17 has a circular shape, and the supercooler 18 has a rectangular shape.
- the area occupied by the accumulator 26 is larger than the area occupied by the receiver 17 and larger than the area occupied by the oil separator 3.
- the area occupied by the accumulator 26 is larger than the area occupied by the supercooler 18.
- the area occupied by the receiver 17 is substantially equal to the area occupied by the oil separator 3.
- the area occupied by the subcooler 18 is smaller than the area occupied by the receiver 17 and smaller than the area occupied by the oil separator 3.
- the oil separator 3 has a portion overlapping the accumulator 26 in the depth direction
- the supercooler 18 has a portion overlapping the receiver 17 in the depth direction
- the receiver 17 has a portion that overlaps the oil separator 3 in the width direction.
- the accumulator 26 and the oil separator 3 are opposed to the compressors 1 and 2 in the width direction.
- the receiver 17 and the subcooler 18 are located on the opposite side of the accumulator 26 and the oil separator 3 from the compressors 1 and 2 side in the width direction.
- a straight line connecting the center of the circular oil separator 3 and the center of the circular receiver 17 is substantially parallel to the width direction.
- the accumulator 26, the oil separator 3 and the receiver 17 are arranged so as to draw an L shape.
- the supercooler 18 is disposed in a space partitioned by the L shape.
- the supercooler 18 is a plate heat exchanger, the heat exchange capacity can be increased and the cooling performance can be improved.
- the receiver 17, the accumulator 26, the oil separator 3, and the supercooler 18 having a large volume can be densely arranged in a rectangular region in plan view. Therefore, a compact outdoor unit can be realized.
- the supercooler 18 By arranging the supercooler 18 in the gap when the receiver 17, the accumulator 26 and the oil separator 3 are provided, a space can be used efficiently.
- the supercooler 18 is arrange
- the largest accumulator 26 and the smallest subcooler 18 are disposed adjacent to each other in the width direction, and two members having a medium size, that is, the receiver 17 and the accumulator 26 are disposed adjacent to each other in the width direction.
- the receiver 17, the accumulator 26, the oil separator 3 and the supercooler 18 can be more densely arranged in a rectangular region.
- the receiver, the accumulator, the oil separator, and the supercooler may be arranged in a rectangular space in two rows and two columns in the plan view, and the receiver, the accumulator, the oil separator, and the supercooler in the plan view. Each may be arranged at any position in the area around the four corners of the rectangular area. For example, in the arrangement of the embodiment shown in FIG. 4, the arrangement positions of the oil separator and the receiver may be switched.
- one straight line on which two members of the receiver, the accumulator, the oil separator, and the supercooler are positioned is connected to the remaining two of the receiver, the accumulator, the oil separator, and the supercooler. If one and the other straight line satisfying the condition of tolerance between the other two members exist in the other straight line on which the member is located, it is preferable that the four members can be arranged more densely.
- the straight line connecting the center of the circular oil separator 3 and the center of the circular receiver 17 is substantially parallel to the width direction in plan view.
- the straight line connecting the center of the circular oil separator and the center of the circular receiver is not parallel to the depth direction and parallel to the width direction in plan view. Good.
- each of the accumulator 26, the oil separator 3, and the receiver 17 has a circular shape and the superheat exchanger 18 has a rectangular shape in plan view.
- one or more members of the accumulator, the oil separator, and the receiver may have a shape other than a circle in plan view, for example, a shape such as a polygon or an ellipse. Also good.
- the superheat heat exchanger may have a shape other than a rectangle in plan view, for example, a polygonal shape other than a rectangle.
- the heat pump has one outdoor unit 50 and one indoor unit 100.
- the heat pump may have any number of one or more outdoor units.
- you may have any number of one or more indoor units.
- the heat pump is a gas engine driven heat pump.
- the heat pump of the present invention may be a heat pump driven by an engine other than a gas engine such as a diesel engine or a gasoline engine.
- the heat pump of the present invention may be an electrically driven heat pump.
- one or more of the electrical components and parts constituting the above-described embodiment can be appropriately omitted.
- further electrical components and parts can be added to the electrical parts and parts constituting the above-described embodiment.
- the compressor power source such as an engine or an electric motor
- the compressor may be separated by a threshold so that the hot heat of the compressor power source does not go to the refrigerant side.
- the power source of compressors, such as an engine and an electric motor, and a compressor do not need to be divided by a threshold.
- a new embodiment can be constructed by combining two or more configurations among all the configurations described in the above-described embodiments and modifications.
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- Engineering & Computer Science (AREA)
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- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Other Air-Conditioning Systems (AREA)
Abstract
Description
上記過冷却器は、プレート式熱交換器であり、
平面視において、上記レシーバ、上記アキュムレータ、上記オイルセパレータおよび上記過冷却器のうちの二部材を、上記室外機の奥行き方向に対して上記室外機の幅方向の一方側に傾斜する直線上に配置し、
上記平面視において、上記レシーバ、上記アキュムレータ、上記オイルセパレータおよび上記過冷却器のうちの残りの二部材を、上記室外機の奥行き方向に対して上記室外機の幅方向の他方側に傾斜する直線上に配置し、
上記平面視において、上記一方側に傾斜する直線上の上記二部材の夫々が、上記残りの二部材の夫々に隣り合っているものである。
上記過冷却器は、プレート式熱交換器であり、
平面視において、上記アキュムレータが、上記室外機の幅方向において上記圧縮機側と上記過冷却器との間に位置し、
平面視において、上記過冷却器が、上記アキュムレータに上記室外機の幅方向に重なるものである。
2 第2圧縮機
3 オイルセパレータ
4 四方弁
6 ガス側フィルタ
8 室内熱交換器
9 液側フィルタ
10 液側閉鎖弁
17 レシーバ
18 過冷却器
20 第1電子膨張弁
21 第2電子膨張弁
23 第1熱交換器
24 第2熱交換器
26 アキュムレータ
27 サブエバポレータ
35 第3電子膨張弁
36 第4電子膨張弁
38 電磁弁
50 室外機
60 制御装置
80 パッケージ
100 室内機
110 ガス冷媒管
120 液冷媒管
Claims (2)
- レシーバよりも冷媒の流れの下流の液冷媒経路に過冷却器を設け、圧縮機の吸入経路にアキュムレータを設け、上記圧縮機の吐出経路にオイルセパレータを設け、上記レシーバ、上記アキュムレータ、上記オイルセパレータおよび上記過冷却器をパッケージに収納する室外機を有するヒートポンプにおいて、
上記過冷却器は、プレート式熱交換器であり、
平面視において、上記レシーバ、上記アキュムレータ、上記オイルセパレータおよび上記過冷却器のうちの二部材を、上記室外機の奥行き方向に対して上記室外機の幅方向の一方側に傾斜する直線上に配置し、
上記平面視において、上記レシーバ、上記アキュムレータ、上記オイルセパレータおよび上記過冷却器のうちの残りの二部材を、上記室外機の奥行き方向に対して上記室外機の幅方向の他方側に傾斜する直線上に配置し、
上記平面視において、上記一方側に傾斜する直線上の上記二部材の夫々が、上記残りの二部材の夫々に隣り合っていることを特徴とするヒートポンプ。 - レシーバよりも冷媒の流れの下流側に設けられる過冷却器と、圧縮機の吸入経路に設けられるアキュムレータとをパッケージに収納する室外機を備えるヒートポンプにおいて、
上記過冷却器は、プレート式熱交換器であり、
平面視において、上記アキュムレータが、上記室外機の幅方向において上記圧縮機側と上記過冷却器との間に位置し、
平面視において、上記過冷却器が、上記アキュムレータに上記室外機の幅方向に重なることを特徴とするヒートポンプ。
Priority Applications (7)
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AU2015350989A AU2015350989B2 (en) | 2014-11-21 | 2015-11-18 | Heat pump |
CN201580055122.3A CN107110520B (zh) | 2014-11-21 | 2015-11-18 | 热泵 |
US15/528,370 US10591171B2 (en) | 2014-11-21 | 2015-11-18 | Heat pump |
EP15860456.1A EP3222922B1 (en) | 2014-11-21 | 2015-11-18 | Heat pump |
KR1020177013679A KR101973303B1 (ko) | 2014-11-21 | 2015-11-18 | 히트 펌프 |
EP20157267.4A EP3677845B1 (en) | 2014-11-21 | 2015-11-18 | Heat pump |
US16/800,552 US11566797B2 (en) | 2014-11-21 | 2020-02-25 | Heat pump |
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JP2014237143A JP6371688B2 (ja) | 2014-11-21 | 2014-11-21 | ヒートポンプ |
JP2014-237143 | 2014-11-21 |
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US15/528,370 A-371-Of-International US10591171B2 (en) | 2014-11-21 | 2015-11-18 | Heat pump |
US16/800,552 Continuation US11566797B2 (en) | 2014-11-21 | 2020-02-25 | Heat pump |
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EP (2) | EP3677845B1 (ja) |
JP (1) | JP6371688B2 (ja) |
KR (1) | KR101973303B1 (ja) |
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US10591171B2 (en) | 2020-03-17 |
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EP3677845A1 (en) | 2020-07-08 |
CN111442569A (zh) | 2020-07-24 |
US11566797B2 (en) | 2023-01-31 |
CN107110520B (zh) | 2020-04-28 |
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US20170328583A1 (en) | 2017-11-16 |
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JP2016099066A (ja) | 2016-05-30 |
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