EP2236957B1 - Klimaanlage - Google Patents
Klimaanlage Download PDFInfo
- Publication number
- EP2236957B1 EP2236957B1 EP10001735.9A EP10001735A EP2236957B1 EP 2236957 B1 EP2236957 B1 EP 2236957B1 EP 10001735 A EP10001735 A EP 10001735A EP 2236957 B1 EP2236957 B1 EP 2236957B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- low pressure
- heat exchanger
- port
- refrigerant
- pressure gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000003507 refrigerant Substances 0.000 claims description 195
- 239000007788 liquid Substances 0.000 claims description 40
- 238000001816 cooling Methods 0.000 claims description 35
- 238000010438 heat treatment Methods 0.000 claims description 33
- 238000007710 freezing Methods 0.000 description 7
- 230000008014 freezing Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 230000007246 mechanism Effects 0.000 description 5
- 238000009825 accumulation Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
Images
Classifications
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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
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/005—Outdoor unit expansion valves
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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
- 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
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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
- 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
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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
- 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
- F25B2313/02742—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means using two four-way valves
Definitions
- the present invention relates to a simultaneous cooling and heating multi-air conditioner including an outdoor and a plurality of indoors, in which by switching high or low pressure of a heat exchanger and a high or low pressure gas pipe, a certain indoor performs a cooling operation while the other indoors perform a heating operation.
- WO 2008/090773 A1 discloses an air conditioner with the features described in the preamble portions of patent claims 1 and 4, respectively.
- Switching of a condenser/evaporator of an outdoor heat exchanger of a simultaneous cooling and heating multi-air conditioner, and switching of high pressure/low pressure of a high or low pressure gas pipe do not sometimes match with each other since cooling and heating are simultaneously operated, and the condenser/evaporator and the high pressure/low pressure have to be separately switched respectively.
- switching is sometimes performed in such a way as with a three-way switching valve by using three portions of a less expensive four-way valve which is frequently used in freezing cycles, instead of a three-way valve and an electromagnetic valve.
- connection is made so that any one of (A) a compressor discharge side piping system and (B) a compressor intake side piping system is connected to (C) an outdoor heat exchanger or a high or low pressure gas pipe, and (D) one remaining dead port is completely sealed in an unused state.
- the dead port is connected to the compressor intake piping via a capillary tube, and thereby, accumulation of the refrigerant is prevented.
- JP-2005-337659 A can be cited.
- WO 2008/090773 A1 discloses an air conditioner comprising: an indoor including an indoor heat exchanger, an outdoor including an outdoor heat exchanger and a compressor for compressing a refrigerant, a liquid pipe through which the refrigerant liquefied by one of the outdoor heat exchanger and the indoor heat exchanger is enabled to flow from the one of the outdoor heat exchanger and the indoor heat exchanger to the other one of the outdoor heat exchanger and the indoor heat exchanger, and a high or low pressure gas pipe through which the refrigerant is enabled to flow between the compressor and the indoor heat exchanger while being prevented from passing through the outdoor heat exchanger.
- an object of the present invention is to provide an air conditioner which prevents performance reduction by preventing bypass loss of a refrigerant in a cooling operation, a heating operation and an operation of mainly carrying out heating, decreases bypass loss of a four-way valve when an outdoor heat exchanger is a condenser and a high or low pressure gas pipe is at a high pressure (at the time of an operation of mainly carrying out cooling), and enhances performance in all operation states.
- an air conditioner includes an indoor having an indoor heat exchanger and an outdoor having a compressor and an outdoor heat exchanger, the indoor and the outdoor being connected by a high or low pressure gas pipe and a liquid pipe for passing a refrigerant, the outdoor including a heat exchanger four-way valve which connects the outdoor heat exchanger to any one of a compressor discharge side and intake side, and a high or low pressure gas pipe four-way valve which connects the high or low pressure gas pipe to any one of a compressor discharge side and intake side, wherein the outdoor further includes a first capillary tube connecting a dead port of the high or low pressure gas pipe four-way valve and the heat exchanger, and a second capillary tube connecting a dead port of the heat exchanger four-way valve and the high or low pressure gas pipe.
- an air conditioner includes an indoor having an indoor heat exchanger and an outdoor having a compressor and an outdoor heat exchanger, the indoor and the outdoor being connected by a high or low pressure gas pipe and a liquid pipe for passing a refrigerant, the outdoor including a heat exchanger four-way valve which connects the outdoor heat exchanger to any one of a compressor discharge side and intake side, and a high or low pressure gas pipe four-way valve which connects the high or low pressure gas pipe to any one of a compressor discharge side and intake side, wherein the high or low pressure gas pipe four-way valve has a high or low pressure gas pipe port, a high pressure port, a low pressure port and a dead port, the dead port and the heat exchanger being connected by a first capillary tube, and the heat exchanger four-way valve has a heat exchanger port, a high pressure port, a low pressure port and a dead port, the dead port and the high or low pressure gas pipe being connected by a second capillary tube.
- the refrigerant flows to the outdoor heat exchanger via the first capillary tube from the dead port of the high or low pressure gas pipe four-way valve, and a return refrigerant from the indoor flows to the compressor intake side from the dead port of the heat exchanger four-way valve via the second capillary tube.
- the refrigerant flows to the high or low pressure gas pipe side via the second capillary tube from the dead port of the heat exchanger four-way valve, and the return refrigerant from the outdoor flows to the compressor intake side from the dead port of the high or low pressure gas pipe four-way valve via the first capillary tube.
- an air conditioner including an indoor having an indoor heat exchanger and an outdoor having a compressor and an outdoor heat exchanger, the indoor and the outdoor being connected by a high or low pressure gas pipe and a liquid pipe for passing a refrigerant, the outdoor including a heat exchanger four-way valve which connects the outdoor heat exchanger to any one of a compressor discharge side and intake side, and a high or low pressure gas pipe four-way valve which connects the high or low pressure gas pipe to any one of a compressor discharge side and intake side, wherein the high or low pressure gas pipe four-way valve has a high or low pressure gas pipe port, a high pressure port, a low pressure port and a dead port, the dead port and the heat exchanger being connected by a first bypass valve for passing the refrigerant in a heat exchanger direction, and the heat exchanger four-way valve has a heat exchanger port, a high pressure port, a low pressure port and a dead port, and the dead port and the high or low pressure gas pipe being connected by a
- the first bypass valve and second bypass valve are a first check-valve and a second check-valve respectively.
- the refrigerant flows to the outdoor heat exchanger via the first check-valve from the dead port of the high or low pressure gas pipe four-way valve.
- the refrigerant flows to the high or low pressure gas pipe via the second check-valve from the dead port of the heat exchanger four-way valve.
- the first bypass valve and second bypass valve are both constituted of opening and closing valves, in the case of four-way valve switch in which the dead port of at least one of the four-way valves is connected to the compressor discharge side, the dead port of the four-way valve of the switch is opened, and in the case of four-way valve switch in which the dead ports of both the four-way valves are both connected to the compressor intake side, the opening and closing valves are both closed.
- the present invention when a switching operation of a cooling operation, a heating operation, and a simultaneous heating/cooling operation in a simultaneous cooling and heating multi-air conditioner is performed by using a less expensive four-way valve, bypass loss of a refrigerant is prevented, and the performance can be enhanced. Further, the liquid refrigerant which enters from the port of the four-way valve can be prevented from being condensed and accumulating in the dead port.
- Fig. 1 is a schematic diagram of embodiment 1 of a freezing cycle of the simultaneous cooling and heating multi-air conditioner of the present invention.
- the air conditioner is constituted by connecting one outdoor 10a and three indoors 40a, 40b and 40c to a liquid pipe 30 for refrigerant, and a high or low pressure gas pipe 34 and a low pressure gas pipe 37 of a refrigerant in parallel respectively.
- the number of outdoors which are connected may be larger than one, and the number of indoors which are connected may be larger or smaller than three, or may be one.
- the inside of a casing of the outdoor 10a includes a compressor 11a which compresses and discharges a refrigerant, a check-valve 12a for passing the refrigerant discharged from the compressor 11a in a discharge direction, four-way valves 16a and 13a which switch a circulating direction of the refrigerant, an outdoor heat exchanger 14a which performs heat exchange between the refrigerant and external air, an outdoor fan 19a which blows the external air to the outdoor heat exchanger 14a, and an outdoor expansion valve 15a which functions as a throttling mechanism.
- the four-way valve 16a is called a heat exchanger four-way valve
- the four-way valve 13a is called a high or low pressure gas pipe four-way valve.
- a port connected to a high pressure side of a compressor discharge side piping 21a is called a high pressure port
- a port connected to a low pressure side of a compressor intake side piping 23a is called a low pressure port
- a port connected to a high or low pressure gas pipe is called a high or low pressure gas pipe port
- a port connected to a heat exchanger is called a heat exchanger port
- a remaining port is called a dead port.
- the high or low pressure gas pipe four-way valve 13a has the respective ports for the high or low pressure gas pipe, high pressure and low pressure, and the dead port
- the heat exchanger four-way valve 16a has the respective ports for the heat exchanger, the high pressure and the low pressure, and the dead port.
- the inside of the casing of the outdoor 10a further includes a bypass capillary tube (first capillary tube) 61a which is connected to between the dead port of the high or low pressure gas pipe four-way valve 13a and the outdoor heat exchanger 14a, and a bypass capillary tube (second capillary tube) 62a which is connected to between the dead port of the heat exchanger four-way valve 16a and the high or low pressure gas pipe (a gate valve 32a side).
- the other end of the outdoor expansion valve 15a is connected to the liquid pipe 30 via a liquid gate valve 31a.
- the low pressure side of the high or low pressure gas pipe four-way valve 13a is connected to the high or low pressure gas pipe 34 via the high or low pressure gate valve 32a.
- the compressor intake side piping 23a is connected to the low pressure gas pipe 37 via a low pressure gas gate valve 39a.
- the respective gate valves 31a, 32a and 39a are opened when the outdoor 10a is connected to the respective pipes 30, 34 and 37, and is kept open, for example, during an operation after that.
- the respective casings of the indoors 40a, 40b and 40c house indoor heat exchangers 41a, 41b and 41c which perform heat exchange between the refrigerant and indoor air, indoor expansion valves 42a, 42b, and 42c which are connected to between the liquid pipe 30 and the respective indoor heat exchangers, and cooling and heating switch units 50a, 50b and 50c.
- High pressure side opening and closing mechanisms 51a, 51b and 51c which are connected to between the high or low pressure gas pipe 34 and the respective indoor heat exchangers
- low pressure side opening and closing mechanisms 52a, 52b and 52c which are connected to between the low pressure gas pipe 37 and the respective indoor heat exchangers are housed in the cooling and heating switch units 50a, 50b and 50c.
- a control device (not illustrated) which performs switch control of the high or low pressure gas pipe four-way valve 13a and the heat exchanger four-way valve 16a of the outdoor 10a, and switch control of the high pressure side opening and closing mechanisms 51a, 51b and 51c, and the low pressure side opening and closing mechanisms 52a, 52b and 52c in the indoors 40a, 40b and 40c based on an operation signal from the operation device operated by a man or a temperature sensor (both not illustrated).
- the high or low pressure gas pipe four-way valve 13a and the heat exchanger four-way valve 16a are in a connected state shown by the solid line in Fig. 1 .
- the high or low pressure gas pipe four-way valve 13a the low pressure port and the high or low pressure gas pipe 34 are connected, and the high pressure port and the dead port are connected so that the high pressure port is connected to the outdoor heat exchanger 14a via the bypass capillary tube 61a.
- the outdoor heat exchanger 14a and the high pressure port are connected, and the low pressure port and the dead port are connected so that the low pressure port is connected to the high or low pressure gate valve 32a side via the bypass capillary tube 62a.
- the high pressure gas refrigerant compressed in the compressor 11a is fed to the high or low pressure gas pipe four-way valve 13a and the heat exchanger four-way valve 16a.
- the high pressure gas refrigerant which is fed to the high or low pressure gas pipe four-way valve 13a is fed to the outdoor heat exchanger 14a via the bypass capillary tube 61a, and the high pressure gas refrigerant which is fed to the heat exchanger four-way valve 16a is also fed to the outdoor heat exchanger 14a.
- the main flow of the high pressure gas refrigerant passes through the four-way valve 16a, but the flow also occurs to the bypass capillary tube 61a.
- the high pressure gas refrigerant is not excessively condensed in the dead port of the high or low pressure gas pipe side four-way valve 13a, and the liquid refrigerant does not accumulate therein. Further, a bypass between high and low pressures is not formed by the bypass capillary tube 61a.
- the high pressure gas refrigerant fed to the outdoor heat exchanger 14a exchanges heat with outdoor air and condenses to be a high pressure refrigerant, passes through the liquid gate valve 31a and the liquid pipe 30, and is used for a cooling operation in the respective indoors 40a, 40b and 40c to be a low pressure gas refrigerant.
- a return refrigerant of low pressure gas flowing out of each of the indoors is diverted to the high or low pressure gas pipe 34 and the low pressure gas pipe 37 to return to the outdoor.
- a part of the low pressure gas refrigerant of the high or low pressure gas pipe 34 is fed to the dead port of the heat exchanger four-way valve 16a via the bypass capillary tube 62a, and the remainder is fed to the high or low pressure gas pipe four-way valve 13a.
- the low pressure gas refrigerants which are fed to the heat exchanger four-way valve 16a and the high or low pressure gas pipe four-way valve 13a merge in the piping 23a and are fed to the compressor.
- the low pressure gas refrigerant of the low pressure gas pipe 37 is also fed to the compressor and compressed again.
- the bypass capillary tube 62a of the heat exchanger four-way valve 16a is connected to the low pressure port via the dead port, and the refrigerant does not condense or does not accumulate in the four-way valve. Further, the bypass between high and low pressures is not formed by the bypass capillary tube 62a.
- the high or low pressure gas pipe four-way valve 13a and the heat exchanger four-way valve 16a are in the connected state shown by the broken line in Fig. 1 .
- the high or low pressure gas pipe four-way valve 13a the high or low pressure gas pipe 34 and the high pressure port are connected, and the low pressure port and the dead port are connected so that the low pressure port is connected to the outdoor heat exchanger 14a via the bypass capillary tube 61a.
- the outdoor heat exchanger 14a and the low pressure port are connected, the high pressure port and the dead port are connected, and the high pressure port is connected to the high or low pressure gate valve 32a side via the bypass capillary tube 62a.
- the high pressure gas refrigerant compressed in the compressor 11a is fed to the high or low pressure gas pipe four-way valve 13a and the heat exchanger four-way valve 16a.
- the high pressure gas refrigerant which is fed to the high or low pressure gas pipe four-way valve 13a is fed to the high or low pressure gas pipe 34, and the high pressure gas refrigerant which is fed to the heat exchanger four-way valve 16a is similarly fed to the high or low pressure gas pipe 34 via the bypass capillary tube 62a.
- the main flow of the high pressure gas refrigerant passes through the four-way valve 13a, but the flow also occurs to the bypass capillary tube 62a.
- the high pressure gas refrigerant does not excessively condense in the dead port of the heat exchanger four-way valve 16a, and the liquid refrigerant does not accumulate therein. Further, the bypass between high and low pressures is not formed by the bypass capillary tube 62a.
- the high pressure gas refrigerant which is fed to the high or low pressure gas pipe 34 is used for a heating operation in each of the indoors 40a, 40b and 40c and condenses to be a high pressure liquid refrigerant.
- the high pressure liquid refrigerant passes through the liquid pipe 30, is restricted by the outdoor expansion valve 15a, and exchanges heat with the outdoor air in the outdoor heat exchanger 14a to be a return refrigerant of a low pressure gas.
- a part of the low pressure gas refrigerant is fed to the dead port of the high or low pressure gas pipe four-way valve 13a via the bypass capillary tube 61a, and the remainder is fed to the heat exchanger four-way valve 16a.
- the bypass capillary tube 61a of the heat exchanger four-way valve 13a is connected to the low pressure port via the dead port, and the refrigerant is not condensed or accumulated in the four-way valve. Further, a bypass between high and low pressures is not formed by the bypass capillary tube 61a.
- the high or low pressure gas pipe four-way valve 13a In the high or low pressure gas pipe four-way valve 13a, the high or low pressure gas pipe 34 and the high pressure port are connected, and in the heat exchanger four-way valve 16a, the outdoor heat exchanger 14a and the high pressure port are connected.
- the low pressure side of the high or low pressure gas four-way valve 13a is connected to the outdoor heat exchanger 14a and the high pressure port of the heat exchanger four-way valve 16a via the dead port and the bypass capillary tube 61a.
- the dead port of the heat exchanger four-way valve 16a is connected to the high or low pressure gas gate valve 32a side and the low pressure port via the bypass capillary tube 62a.
- the high pressure gas refrigerant compressed in the compressor 11a is fed to the high or low pressure gas pipe four-way valve 13a and the heat exchanger four-way valve 16a.
- the high pressure gas refrigerant which is fed to the high or low pressure gas pipe four-way valve 13a is fed to the high or low pressure gas pipe 34, and the high pressure gas refrigerant which is fed to the heat exchanger four-way valve 16a is fed to the outdoor heat exchanger 14a.
- a part of the high pressure gas refrigerant which is fed to the outdoor heat exchanger 14a is fed to the compressor intake piping 23a via the bypass capillary tube 61a, the dead port of the high or low pressure gas pipe four-way valve 13a, and the low pressure port.
- a part of the high pressure gas refrigerant which is fed to the high or low pressure gas pipe 34 via the high or low pressure gas pipe four-way valve 13a is fed to the compressor intake piping 23a via the bypass capillary tube 62a, the dead port and the low pressure port of the heat exchanger four-way valve 16a.
- the flow of the refrigerant occurs in the bypass capillary tubes 61a and 62a, and therefore, the liquid refrigerant does not accumulate in the high or low pressure gas pipe four-way valve 13a and the heat exchanger four-way valve 16a, but since the bypass between high and low pressures is formed by passing through both the bypass capillary tubes, the refrigerant circulation amount is decreased by the amount for the bypass to reduce performance.
- an exhaust heat recovery operation of the indoors is carried out in the simultaneous cooling and heating operation, a reserve capacity occurs to the outdoor capacity, and capability shortage does not occur.
- the high pressure gas refrigerant which is fed to the high or low pressure gas pipe 34 is used for a heating operation in the indoor 40c to become a condensed high pressure liquid refrigerant. Further, the high pressure gas refrigerant which is fed to the outdoor heat exchanger 14a exchanges heat with outdoor air and condenses to become a high pressure liquid refrigerant, passes through the liquid gate valve 31a and the liquid pipe 30, merges with the liquid refrigerant which is condensed in the indoor 40c, is used for the cooling operation in the indoors 40a and 40b and becomes a low pressure gas refrigerant.
- the low pressure gas refrigerant which flows out of each of the indoors passes through the low pressure gas pipe 37, returns to the compressor and is compressed again.
- the bypass capillary tube is used for the dead port of the four-way valve, and therefore, the following effect is provided. More specifically, the bypass is such that the liquid refrigerant does not accumulate in the four-way valve, and therefore, a fine pipe can be used, which is far less expensive as compared with the other electromagnetic valves and the like. Further, the bypass capillary tube does not have the operating component as compared with the other valves and the like. Therefore, operation failure (tightened) does not occur, and is highly reliable.
- Fig. 2 is a schematic diagram of a freezing cycle of embodiment 2 of the present invention.
- This is an example in which the bypass capillary tubes 61a and 62a shown in Fig. 1 are changed to a first bypass check-valve (first bypass valve) 63a and a second bypass check-valve (second bypass valve) 64a.
- first bypass check-valve (first bypass valve) 63a is connected so that the refrigerant flows in the heat exchanger direction between the dead port of the high or low pressure gas pipe four-way valve 13a and the heat exchanger 14a.
- the second bypass check-valve (second bypass valve) 64a is connected so that the refrigerant flows in the high or low pressure gas pipe direction between the dead port of the heat exchanger four-way valve 16a and the high or low pressure gas pipe 34.
- the high or low pressure gas pipe four-way valve 13a and the heat exchanger four-way valve 16a are in the connected state shown by the solid line in Fig. 2 .
- the high or low pressure gas pipe four-way valve 13a the high or low pressure gas pipe 34 is connected to the low pressure port, and in the heat exchanger four-way valve 16a, the outdoor heat exchanger 14a is connected to the high pressure port.
- the high pressure port of the high or low pressure gas pipe four-way valve 13a is connected to the outdoor heat exchanger 14a via the first bypass check-valve 63a, and the low pressure port of the heat exchanger four-way valve 16a is connected to the high or low pressure gate valve 32a side via the second bypass check-valve 64a.
- the high pressure gas refrigerant compressed in the compressor 11a is fed to the high or low pressure gas pipe four-way valve 13a and the heat exchanger four-way valve 16a.
- the high pressure gas refrigerant which is fed to the high or low pressure gas pipe four-way valve 13a is fed to the outdoor heat exchanger 14a via the bypass check-valve 63a, and the high pressure gas refrigerant which is fed to the heat exchanger four-way valve 16a is also fed to the outdoor heat exchanger 14a.
- the flow of the refrigerant occurs by the bypass check-valve 63a.
- the high pressure gas refrigerant is not excessively condensed in the dead port of the high or low pressure gas pipe four-way valve 13a, and the liquid refrigerant does not accumulate therein. Further, a bypass between high and low pressures is not formed by the bypass check-valve 63a.
- a return refrigerant of low pressure gas which flows out of each of the indoors is diverted to the high or low pressure gas pipe 34 and the low pressure gas pipe 37 to return to the outdoor.
- the low pressure gas refrigerant of the high or low pressure gas pipe 34 is fed to the high or low pressure gas pipe four-way valve 13a.
- the low pressure gas refrigerant is not fed to the heat exchanger four-way valve 16a, since the bypass check-valve 64a of the dead port is in the opposite direction.
- the bypass check-valve 64a of the heat exchanger four-way valve 16a is connected to the low pressure gas refrigerant side.
- the refrigerant of the dead port does not accumulate in the four-way valve by being condensed, and further, the bypass check-valve 64a does not form a bypass between high and low pressures.
- the low pressure gas refrigerant which is fed to the high or low pressure gas pipe four-way valve 13a is fed to the compressor, and the low pressure gas refrigerant of the low pressure gas pipe 37 is also fed to the compressor, which are compressed again.
- the high or low pressure gas pipe four-way valve 13a and the heat exchanger four-way valve 16a are in the connected state shown by the broken line in Fig. 2 .
- connection is in the direction in which the high or low pressure gas pipe 34 is connected to the high pressure port
- heat exchanger four-way valve 16a connection is in the direction in which the outdoor heat exchanger 14a is connected to the low pressure port.
- the low pressure port of the high or low pressure gas pipe four-way valve 13a is connected to the outdoor heat exchanger 14a via the dead port and the bypass check-valve 63a, and the high pressure port of the heat exchanger four-way valve 16a is connected to the high or low pressure gate valve 32a side via the dead port and the bypass check-valve 64a.
- the high pressure gas refrigerant compressed in the compressor 11a is fed to the high or low pressure gas pipe four-way valve 13a and the heat exchanger four-way valve 16a.
- the high pressure gas refrigerant which is fed to the high or low pressure gas pipe four-way valve 13a is fed to the high or low pressure gas pipe 34, and the high pressure gas refrigerant which is fed to the heat exchanger four-way valve 16a is also fed to the high or low pressure gas pipe 34 via the bypass check-valve 64a.
- the flow of the refrigerant occurs by the bypass check-valve 64a. Therefore, the high pressure gas refrigerant is not excessively condensed in the dead port of the heat exchanger four-way valve 16a, and the liquid refrigerant does not accumulate therein. Further, a bypass between high and low pressures is not formed.
- the high pressure gas refrigerant which is fed to the high or low pressure gas pipe 34 is used for a heating operation in each of the indoors 40a, 40b and 40c, and is condensed to be a high pressure liquid refrigerant. Subsequently, the high pressure liquid refrigerant passes through the liquid pipe 30, is restricted in the outdoor expansion valve 15a, exchanges heat with outdoor air in the outdoor heat exchanger 14a to become a low pressure gas refrigerant, and is fed to the heat exchanger four-way valve 16a. The low pressure gas refrigerant is not fed to the dead port of the high or low pressure gas pipe four-way valve 13a, since the bypass check-valve 63a is in the opposite direction.
- bypass check-valve 63a of the high or low pressure gas pipe four-way valve 13a is connected to the low pressure at the low pressure gas refrigerant side.
- the refrigerant does not condense in the dead port, or does not accumulate in the four-way valve, or a bypass between high and low pressures is not formed.
- the low pressure gas refrigerant which is fed to the heat exchanger four-way valve 16a is fed to the compressor 11a, and is compressed again.
- the high or low pressure gas pipe four-way valve 13a is in the connected state shown by the broken line
- the heat exchanger four-way valve 16a is in the connected state shown by the solid line.
- connection is in the direction in which the high or low pressure gas pipe 34 is connected to the high pressure port
- connection is in the direction in which the outdoor heat exchanger 14a is connected to the high pressure port.
- the low pressure port of the high or low pressure gas pipe four-way valve 13a is connected to the outdoor heat exchanger 14a via the dead port and the bypass check-valve 63a.
- the low pressure port of the heat exchanger four-way valve 16a is connected to the high or low pressure gas gate valve 32a side via the dead port and the bypass check-valve 64a.
- the high pressure gas refrigerant compressed by the compressor 11a is fed to the high or low pressure gas pipe four-way valve 13a and the heat exchanger four-way valve 16a.
- the high pressure gas refrigerant which is fed to the high or low pressure gas pipe four-way valve 13a is fed to the high or low pressure gas pipe 34, and the high pressure gas refrigerant which is fed to the heat exchanger four-way valve 16a is fed to the outdoor heat exchanger 14a.
- the pressure between the dead port of the high or low pressure gas pipe four-way valve 13a from the check-valve, and the pressure between the dead port of the heat exchanger four-way valve 16a and the check-valve are drawn to low pressure. Therefore, the refrigerant is prevented from being condensed and accumulating in the dead port of each of the four-way valves, or a bypass between high and low pressures is not formed.
- Fig. 3 is a schematic diagram of a freezing cycle of embodiment 3 of the present invention.
- Fig. 3 is an example in which the first bypass check-valve 63a and the second bypass check-valve 64a shown in Fig. 2 are changed to a first bypass opening and closing valve 65a and a second bypass opening and closing valve 66a respectively.
- the first bypass opening and closing valve (first bypass valve) 65a is opened and closed so that the refrigerant flows in the heat exchanger direction between the dead port of the high or low pressure gas pipe four-way valve 13a and the heat exchanger 14a
- the second bypass opening and closing valve (second bypass valve) 66a is opened and closed so that the refrigerant flows in the high or low pressure gas pipe direction between the dead port of the heat exchanger four-way valve 16a and the high or low pressure gas pipe 34.
- the opening and closing valve may be an electromagnetic valve or an expansion valve.
- the bypass opening and closing valve is characterized by being usually in an open state, and being brought into a closed state when the outdoor heat exchanger 14a is an evaporator, and when the high or low pressure gas pipe 34 is at low pressure (especially at the time of the operation of mainly carrying out cooling).
- the bypass between high and low pressures at the time of the operation of mainly carrying out cooling which occurs in Fig. 1 can be prevented.
- the high or low pressure gas pipe four-way valve 13a and the heat exchanger four-way valve 16a are in the connected state shown by the solid line in Fig. 3 .
- connection is in the direction in which the high or low pressure gas pipe 34 is connected to the low pressure port
- heat exchanger four-way valve 16a connection is in the direction in which the outdoor heat exchanger 14a is connected to the high pressure port.
- the high pressure port of the high or low pressure gas pipe four-way valve 13a is connected to the outdoor heat exchanger 14a via the dead port and the bypass opening and closing valve 65a.
- the low pressure port of the heat exchanger four-way valve 16a is connected to the high or low pressure gate valve 32a side via the dead port and the bypass opening and closing valve 66a.
- the bypass opening and closing valve 65a is necessarily opened, but the bypass opening and closing valve 66a may be opened or closed.
- the high pressure gas refrigerant compressed in the compressor 11a is fed to the high or low pressure gas pipe four-way valve 13a and the heat exchanger four-way valve 16a.
- the high pressure gas refrigerant which is fed to the high or low pressure gas pipe four-way valve 13a is fed in the direction of the outdoor heat exchanger 14a since the bypass opening and closing valve 65a is open, and the high pressure gas refrigerant which is fed to the heat exchanger four-way valve 16a is also fed to the outdoor heat exchanger 14a.
- the flow of the refrigerant occurs by the open state of the bypass opening and closing valve 65a.
- the high pressure gas refrigerant is not excessively condensed in the dead port of the high or low pressure gas pipe four-way valve 13a, and the liquid refrigerant does not accumulate therein. Further, a bypass between high and low pressures is not formed.
- a return refrigerant of low pressure gas which flows out of each of the indoors is diverted to the high or low pressure gas pipe 34 and the low pressure gas pipe 37 to return to the outdoor.
- the low pressure gas refrigerant of the high or low pressure gas pipe 34 is fed to the high or low pressure gas pipe four-way valve 13a.
- the bypass opening and closing valve 66a may be opened or closed to the heat exchanger four-way valve 16a, and therefore, the refrigerant may be fed or not fed.
- Piping (including the dead port) between the low pressure port of the heat exchanger four-way valve 16a and the bypass opening and closing valve 66a is connected to the low pressure gas refrigerant side. Therefore, the refrigerant is not condensed in the dead port, or does not accumulate in the four-way valve. Further, a bypass between high and low pressures is not formed.
- the low pressure gas refrigerant which is fed to the high or low pressure gas pipe four-way valve 13a is fed to the compressor.
- the low pressure gas refrigerant of the low pressure gas pipe 37 is also fed to the compressor, and is compressed again.
- the high or low pressure gas pipe four-way valve 13a and the heat exchanger four-way valve 16a are in the connected state shown by the broken line in Fig. 3 .
- connection is in the direction in which the high or low pressure gas pipe 34 is connected to the high pressure port
- heat exchanger four-way valve 16a connection is in the direction in which the outdoor heat exchanger 14a is connected to the low pressure port.
- the low pressure port of the high or low pressure gas pipe four-way valve 13a is connected to the outdoor heat exchanger 14a via the bypass opening and closing valve 65a.
- the high pressure port of the heat exchanger four-way valve 16a is connected to the high or low pressure gate valve side via the bypass opening and closing valve 66a.
- the bypass opening and closing valve 66a is necessarily opened, but the bypass opening and closing valve 65a may be opened or closed.
- the high pressure gas refrigerant compressed in the compressor 11a is fed to the high or low pressure gas pipe four-way valve 13a and the heat exchanger four-way valve 16a.
- the high pressure gas refrigerant which is fed to the high or low pressure gas pipe four-way valve 13a is fed to the high or low pressure gas pipe 34, and the high pressure gas refrigerant which is fed to the heat exchanger four-way valve 16a is fed to the high or low pressure gas pipe 34 since the bypass opening and closing valve 66a is opened.
- the flow of the refrigerant occurs by the bypass opening and closing valve 66a. Therefore, the high pressure gas refrigerant is not excessively condensed in the dead port of the heat exchanger four-way valve 16a, and the liquid refrigerant does not accumulate therein. A bypass between high and low pressures is not formed.
- the high pressure gas refrigerant which is fed to the high or low pressure gas pipe 34 is used for a heating operation in each of the indoors 40a, 40b and 40c, and is condensed to be a high pressure liquid refrigerant. Subsequently, the high pressure liquid refrigerant passes through the liquid pipe 30, is restricted in the outdoor expansion valve 15a, exchanges heat with outdoor air through the outdoor heat exchanger 14a to become a low pressure gas refrigerant, and is fed to the heat exchanger four-way valve 16a.
- the refrigerant may be fed or may not be fed to the high or low pressure gas pipe four-way valve 13a, since the bypass opening and closing valve 65a may be opened or closed.
- the dead port between the high or low pressure gas pipe four-way valve 13a and the bypass opening and closing valve 65a is connected to the low pressure gas refrigerant side.
- the refrigerant is not condensed in the dead port, or does not accumulate in the four-way valve. Further, a bypass between high and low pressures is not formed.
- the low pressure gas refrigerant which is fed to the heat exchanger four-way valve 16a is fed to the compressor, and is compressed again.
- the high or low pressure gas pipe four-way valve 13a is in the connected state shown by the broken line
- the heat exchanger four-way valve 16a is in the connected state shown by the solid line.
- connection is in the direction in which the high or low pressure gas pipe 34 is connected to the high pressure port
- connection is in the direction in which the outdoor heat exchanger 14a is connected to the high pressure port.
- the low pressure side of the high or low pressure gas pipe four-way valve 13a is connected to the outdoor heat exchanger 14a via the bypass opening and closing valve 65a.
- the low pressure side of the heat exchanger four-way valve 16a is connected to the high or low pressure gas gate valve 32a side via the bypass opening and closing valve 66a.
- the bypass opening and closing valves 65a and 66a are both closed.
- the high pressure gas refrigerant compressed in the compressor 11a is fed to the high or low pressure gas pipe four-way valve 13a and the heat exchanger four-way valve 16a.
- the high pressure gas refrigerant which is fed to the high or low pressure gas pipe four-way valve 13a is fed to the high or low pressure gas pipe 34, and the high pressure gas refrigerant which is fed to the heat exchanger four-way valve 16a is fed to the outdoor heat exchanger 14a.
- high pressure is exerted on the bypass opening and closing valve 65a, but since the bypass opening and closing valve 65a is closed, the refrigerant is not fed to the high or low pressure gas pipe four-way valve 13a and the compressor intake piping 23a.
- bypass opening and closing valve 66a high pressure is also exerted on the bypass opening and closing valve 66a, but since the bypass opening and closing valve 66a is closed, the refrigerant is not fed to the heat exchanger four-way valve 16a and the compressor intake piping 23a. Further, the pressure between the respective opening and closing valves and the high or low pressure gas pipe four-way valve 13a and the heat exchanger four-way valve 16a via the respective dead ports are drawn to low pressure. Therefore, the refrigerant is not condensed to accumulate in the four-way valves. Further, a bypass between high and low pressures is not formed.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
- Air Conditioning Control Device (AREA)
- Other Air-Conditioning Systems (AREA)
Claims (8)
- Klimaanlage umfassend: einen Innenbereich (40a, 40b, 40c) einschließend einen Innenbereichswärmetauscher (41a, 41b, 41c), einen Außenbereich (10a) einschließend einen Außenbereichswärmetauscher (14a) und einen Kompressor (11a) zum Komprimieren eines Kühlmittels, ein Flüssigkeitsrohr (30), durch das das von einem des Außenbereichswärmetauschers (14a) und des Innenbereichswärmetauschers (41a, 41b, 41c) verflüssigte Kühlmittel von einem des Außenbereichswärmetauschers (14a) und des Innenbereichswärmetauschers (41a, 41b, 41c) zu dem anderen des Außenbereichswärmetauschers (14a) und des Innenbereichswärmetauschers (41a, 41b, 41c) fließen kann, und ein Hoch- oder Niedrigdruckgasrohr (34), durch das das Kühlmittel zwischen dem Kompressor (11a) und dem Innenbereichswärmetauscher (41a, 41b, 41c) fließen kann, während es daran gehindert ist, durch den Außenbereichswärmetauscher (14a) hindurchzutreten,
dadurch gekennzeichnet, dass der Außenbereich (10a) weiterhin einschließt:ein erstes Vierwegeventil (16a) einschließend einen ersten Hochdruckanschluss, durch den das komprimierte Kühlmittel von dem Kompressor (11a) in das erste Vierwegeventil (16a) aufgenommen werden kann, einen ersten Niedrigdruckanschluss, durch den das Kühlmittel von dem ersten Vierwegeventil (16a) in den Kompressor (11a) aufgenommen werden kann, einen Wärmetauscheranschluss, durch den das Kühlmittel zwischen dem Außenbereichswärmtauscher (14a) und dem Kompressor (11a) fließen kann, und einen ersten Totanschluss, der fluid mit dem ersten Hochdruckanschluss verbunden ist, wenn das Kühlmittel von dem Wärmetauscheranschluss zu dem ersten Niedrigdruckanschluss fließt, und der fluid mit dem ersten Niedrigdruckanschluss verbunden ist, wenn das Kühlmittel von dem ersten Hochdruckanschluss zu dem Wärmetauscheranschluss fließt,ein zweites Vierwegeventil (13a) einschließend einen zweiten Hochdruckanschluss, durch den das komprimierte Kühlmittel von dem Kompressor (11a) in das zweite Vierwegeventil (13a) aufgenommen werden kann, einen zweiten Niedrigdruckanschluss, durch den das Kühlmittel von dem zweiten Vierwegeventil (13a) in den Kompressor (11a) aufgenommen werden kann, ein Hoch- oder Niedrigdruckgasrohr, durch das das Kühlmittel zwischen dem Hoch- oder Niedrigdruckgasrohr (34) und dem Kompressor (11a) fließen kann, und einen zweiten Totanschluss, der fluid mit dem zweiten Hochdruckanschluss verbunden ist, wenn das Kühlmittel von dem Hoch- oder Niedrigdruckgasrohranschluss zu dem zweiten Niedrigdruckanschluss fließt, und fluid mit dem zweiten Niedrigdruckanschluss verbunden ist, wenn das Kühlmittel von dem zweiten Hochdruckanschluss zu dem Hoch- oder Niedrigdruckgasanschluss fließt,ein erstes Kapillarrohr (61a), das einen Fluidstrom zwischen dem zweiten Totanschluss und dem Kühlmittel zwischen dem Wärmetauscheranschluss und dem Außenbereichswärmetauscher (14a) ermöglicht, undeine zweites Kapillarrohr (62a), das einen Fluidstrom zwischen dem ersten Totanschluss und dem Hoch- oder Niedrigdruckgasrohr (34) ermöglicht. - Klimaanlage nach Anspruch 1, wobei während eines Kühlbetriebs der Klimaanlage das Kühlmittel von dem zweiten Totanschluss zu dem Außenbereichswärmetauscher (14a) durch das erste Kapillarrohr (61) fließt und das Kühlmittel von dem Hoch- oder Niedrigdruckgasrohr (34) durch das erste Kapillarrohr (62a) und den zweiten Totanschluss fließt, um in den Kompressor (11a) genommen zu werden.
- Klimaanlage nach Anspruch 1 oder 2, wobei während eines Heizbetriebs der Klimaanlage das Kühlmittel von dem ersten Totanschluss durch das zweite Kapillarrohr (62a) in das Hoch- oder Niedrigdruckgasrohr (34) fließt und das Kühlmittel von dem Außenbereichswärmetauscher (14a) durch den zweiten Totanschluss und das erste Kapillarrohr (61a) fließt, um in den Kompressor (11a) aufgenommen zu werden.
- Klimaanlage umfassend : einen Innenbereich (40a, 40b, 40c) einschließend einen Innenbereichswärmetauscher (41a, 41b, 41c), einen Außenbereich (10a) einschließend einen Außenbereichswärmetauscher (14a) und einen Kompressor (11a) zum Komprimieren eines Kühlmittels, ein Flüssigkeitsrohr (30), durch das das von einem des Außenbereichswärmetauschers (14a) und des Innenbereichswärmetauschers (41a, 41b, 41c) verflüssigte Kühlmittel von einem des Außenbereichswärmetauschers (14a) und des Innenbereichswärmetauschers (41a, 41b, 41c) zu dem anderen des Außenbereichswärmetauschers (14a) und des Innenbereichswärmetauschers (41a, 41b, 41c) fließen kann, und ein Hoch- oder Niedrigdruckgasrohr (34), durch das das Kühlmittel zwischen dem Kompressor (11a) und dem Innenbereichswärmetauscher (41a, 41b, 41c) fließen kann, während es daran gehindert ist, durch den Außenbereichswärmetauscher (14a) hindurchzutreten,
dadurch gekennzeichnet, dass der Außenbereich (10a) weiterhin einschließt:ein erstes Vierwegeventil (16a) einschließend einen ersten Hochdruckanschluss, durch den das komprimierte Kühlmittel von dem Kompressor (11a) in das erste Vierwegeventil (16a) aufgenommen werden kann, einen ersten Niedrigdruckanschluss, durch den das Kühlmittel von dem ersten Vierwegeventil (16a) in den Kompressor (11a) aufgenommen werden kann, einen Wärmetauscheranschluss, durch den das Kühlmittel zwischen dem Außenbereichswärmtauscher (14a) und dem Kompressor (11a) fließen kann, und einen ersten Totanschluss, der fluid mit dem ersten Hochdruckanschluss verbunden ist, wenn das Kühlmittel von dem Wärmetauscheranschluss zu dem ersten Niedrigdruckanschluss fließt, und der fluid mit dem ersten Niedrigdruckanschluss verbunden ist, wenn das Kühlmittel von dem ersten Hochdruckanschluss zu dem Wärmetauscheranschluss fließt,ein zweites Vierwegeventil (13a) einschließend einen zweiten Hochdruckanschluss, durch den das komprimierte Kühlmittel von dem Kompressor (11a) in das zweite Vierwegeventil (13a) aufgenommen werden kann, einen zweiten Niedrigdruckanschluss, durch den das Kühlmittel von dem zweiten Vierwegeventil (13a) in den Kompressor (11a) aufgenommen werden kann, ein Hoch- oder Niedrigdruckgasrohr, durch das das Kühlmittel zwischen dem Hoch- oder Niedrigdruckgasrohr (34) und dem Kompressor (11a) fließen kann, und einen zweiten Totanschluss, der fluid mit dem zweiten Hochdruckanschluss verbunden ist, wenn das Kühlmittel von dem Hoch- oder Niedrigdruckgasrohranschluss zu dem zweiten Niedrigdruckanschluss fließt, und fluid mit dem zweiten Niedrigdruckanschluss verbunden ist, wenn das Kühlmittel von dem zweiten Hochdruckanschluss zu dem Hoch- oder Niedrigdruckgasanschluss fließt,ein erstes Umgehungsventil (63a), das einen Fluidstrom zwischen dem zweiten Totanschluss und dem Kühlmittel zwischen dem Wärmetauscheranschluss und dem Außenbereichswärmeaustauscher (14a) ermöglicht, undein zweites Umgehungsventil (64a), das einen Fluidstrom zwischen dem ersten Totanschluss und dem Hoch- oder Niedrigdruckgasrohr (34) ermöglicht. - Klimaanlage nach Anspruch 4, wobei das erste Umgehungsventil ein Rückschlagventil (63a) ist, das es dem Kühlmittel ermöglicht, von dem zweiten Totanschluss zu dem Außenbereichswärmetauscher (14a) zu fließen, und das zweite Umgehungsventil ein Rückschlagventil (64a) ist, das es dem Kühlmittel erlaubt, von dem ersten Totanschluss zu dem Hoch- oder Niedrigdruckgasrohr (34) zu fließen.
- Klimaanlage nach Anspruch 4 oder 5, wobei während des Kühlbetriebs der Klimaanlage das Kühlmittel von dem zweiten Totanschluss zu dem Außenbereichswärmetauscher (14a) durch das erste Umgehungsventil (63a, 65a) fließt.
- Klimaanlage nach einem der Ansprüche 4-6, wobei während eines Heizbetriebs der Klimaanlage das Kühlmittel von dem ersten Totanschluss zu dem Hoch- oder Niedrigdruckgasrohr (34) durch das zweite Umgehungsventil (64a, 66a) fließt.
- Klimaanlage nach Anspruch 4, wobei mindestens eines von dem ersten Umgehungsventil (65a) und dem zweiten Umgehungsventil (66a) geöffnet ist, wenn das komprimierte Kühlmittel von dem Kompressor (11a) an mindestens eines von dem ersten Umgehungsventil (65a) und dem zweiten Umgehungsventil (66a) geliefert wird, und sowohl das erste Umgehungsventil als auch das zweite Umgehungsventil (66a) geschlossen sind, wenn der erste und der zweite Totanschluss mit dem ersten bzw. dem zweiten Niedrigdruckanschluss in fluider Verbindung steht.
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KR102146371B1 (ko) * | 2013-09-25 | 2020-08-20 | 삼성전자주식회사 | 공기조화기 |
CN103759455B (zh) * | 2014-01-27 | 2015-08-19 | 青岛海信日立空调系统有限公司 | 热回收变频多联式热泵系统及其控制方法 |
JP6539560B2 (ja) * | 2015-10-13 | 2019-07-03 | 三菱重工サーマルシステムズ株式会社 | 空気調和装置 |
CN106369891B (zh) * | 2016-11-03 | 2018-10-19 | 珠海格力电器股份有限公司 | 空调机组及其控制方法 |
JP7002227B2 (ja) * | 2017-06-14 | 2022-01-20 | 日立ジョンソンコントロールズ空調株式会社 | 空気調和機 |
CN112833514B (zh) * | 2019-11-22 | 2022-10-28 | 青岛海尔空调电子有限公司 | 用于空调系统的补气增焓控制方法及空调系统 |
CN113375376A (zh) * | 2020-03-10 | 2021-09-10 | 开利公司 | 集成热泵系统及其控制方法 |
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JPH0424364Y2 (de) * | 1986-04-24 | 1992-06-09 | ||
JPH0711366B2 (ja) * | 1987-11-18 | 1995-02-08 | 三菱電機株式会社 | 空気調和装置 |
JPH0769089B2 (ja) * | 1987-12-18 | 1995-07-26 | ダイキン工業株式会社 | 蓄熱式空気調和装置 |
JPH0749900B2 (ja) * | 1988-08-31 | 1995-05-31 | ダイキン工業株式会社 | 熱回収形空気調和装置 |
JP3296608B2 (ja) * | 1992-10-27 | 2002-07-02 | 三洋電機株式会社 | 空気調和装置 |
US6244057B1 (en) * | 1998-09-08 | 2001-06-12 | Hitachi, Ltd. | Air conditioner |
JP2001253227A (ja) * | 2000-03-14 | 2001-09-18 | Zexel Valeo Climate Control Corp | 車両用空調装置 |
JP2005337659A (ja) | 2004-05-31 | 2005-12-08 | Daikin Ind Ltd | 空気調和装置 |
CN100460775C (zh) * | 2004-11-04 | 2009-02-11 | 陈则韶 | 带导流套筒换热器储水箱的空气源热泵热水器 |
CN2879057Y (zh) * | 2006-03-04 | 2007-03-14 | 王俊 | 三个介质之间热量传递的蒸汽压缩式热泵循环装置 |
JP4909093B2 (ja) * | 2007-01-11 | 2012-04-04 | 日立アプライアンス株式会社 | マルチ型空気調和機 |
JP5125116B2 (ja) * | 2007-01-26 | 2013-01-23 | ダイキン工業株式会社 | 冷凍装置 |
KR100791930B1 (ko) * | 2007-04-06 | 2008-01-04 | 삼성전자주식회사 | 멀티공기조화기용 실외유닛 |
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