WO2020230321A1 - 空気調和装置 - Google Patents
空気調和装置 Download PDFInfo
- Publication number
- WO2020230321A1 WO2020230321A1 PCT/JP2019/019539 JP2019019539W WO2020230321A1 WO 2020230321 A1 WO2020230321 A1 WO 2020230321A1 JP 2019019539 W JP2019019539 W JP 2019019539W WO 2020230321 A1 WO2020230321 A1 WO 2020230321A1
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- WIPO (PCT)
- Prior art keywords
- pipe
- refrigerant supply
- supply pipe
- liquid
- repeater
- 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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Classifications
-
- 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
-
- 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
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0068—Indoor units, e.g. fan coil units characterised by the arrangement of refrigerant piping outside the heat exchanger within the unit casing
-
- 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
- F24F1/26—Refrigerant piping
- F24F1/32—Refrigerant piping for connecting the separate outdoor units to indoor units
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B13/00—Compression machines, plants or systems, with reversible cycle
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/006—Compression machines, plants or systems with reversible cycle not otherwise provided for two pipes connecting the outdoor side to the indoor side with multiple indoor units
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/023—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units
- F25B2313/0231—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units with simultaneous cooling and heating
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/027—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means
- F25B2313/0272—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means using bridge circuits of one-way valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/19—Pressures
- F25B2700/193—Pressures of the compressor
- F25B2700/1931—Discharge pressures
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/19—Pressures
- F25B2700/193—Pressures of the compressor
- F25B2700/1933—Suction pressures
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
Definitions
- the present invention relates to an air conditioner having a repeater provided between an outdoor unit and an indoor unit.
- the air conditioner generates conditioned air by circulating a refrigerant that carries heat through the piping that connects the outdoor unit and the indoor unit.
- an air conditioner that can perform cooling and heating at the same time. Since a plurality of indoor units are used in this type of air conditioner, a repeater is installed between the outdoor unit and the plurality of indoor units. The repeater distributes the refrigerant to each indoor unit.
- the conventional air conditioner described in Patent Document 1 is an air conditioner capable of simultaneously cooling and heating.
- the air conditioner described in Patent Document 1 includes a heat source unit as an outdoor unit, a plurality of indoor units, and a repeater provided between the indoor unit and the heat source unit.
- the repeater of the air conditioner is provided with a plurality of branch ports for connecting to each indoor unit.
- the branch port provided in the repeater is generally connected to the local pipe connected to the indoor unit by a flare nut.
- the branch port of the repeater is configured by brazing a joint to a copper pipe.
- the local pipe side is configured by providing a flare nut at the end of the local pipe.
- the present invention has been made to solve the above problems, and an object of the present invention is to provide an air conditioner for improving workability in connection work between a repeater and a pipe connected to an indoor unit. And.
- the air conditioner according to the present invention is provided between an outdoor unit having an outdoor heat exchanger, an indoor unit having an indoor heat exchanger, and the outdoor unit and the indoor unit, and the indoor heat of the indoor unit.
- a repeater having a first refrigerant supply pipe and a second refrigerant supply pipe connected to the exchanger is provided, and the first refrigerant supply pipe and the second refrigerant supply pipe are the same as the repeater.
- Each of the first refrigerant supply pipes is provided so as to project from the side surface, the first refrigerant supply pipe is arranged above the second refrigerant supply pipe, and the length of the portion of the first refrigerant supply pipe protruding from the side surface is the said. It is longer than the length of the portion of the second refrigerant supply pipe protruding from the side surface.
- the workability of the connection work between the repeater and the piping connected to the indoor unit can be improved.
- FIG. It is a figure which shows the structure of the air conditioner which concerns on Embodiment 1.
- FIG. It is a perspective view which shows the structure of the whole repeater provided in the air conditioner which concerns on Embodiment 1.
- FIG. It is a partial side view which shows the structure of the refrigerant supply pipe of the repeater which concerns on Embodiment 1.
- FIG. It is a partial side view which shows the structure of another example of the refrigerant supply pipe of the repeater which concerns on Embodiment 1.
- FIG. It is a figure which shows the state which the spanner was applied to the joint provided in the refrigerant supply pipe shown in FIG. It is a partial side view which shows the structure of the refrigerant supply pipe of the repeater of a reference example.
- FIG. 1 It is a partial side view which shows the structure of the joint provided in the refrigerant supply pipe of the repeater of a reference example. It is a figure which shows the state which the joint provided in the refrigerant supply pipe of the repeater of a reference example is deformed. It is a figure which shows the state which wrenched the joint of the reference example shown in FIG.
- the air conditioner according to the first embodiment is an air conditioner having a plurality of indoor units and capable of performing full cooling operation, full heating operation, and simultaneous cooling / heating operation.
- FIG. 1 is a diagram showing a configuration of an air conditioner 100 according to the first embodiment.
- the air conditioner 100 includes an outdoor unit 51, a plurality of indoor units 52a and 52b, and a repeater 53.
- the repeater 53 is provided between the outdoor unit 51 and the indoor units 52a and 52b, respectively.
- the outdoor unit 51 and the repeater 53 are connected to each other via a first liquid pipe 104 through which the liquid refrigerant flows and a first gas pipe 103 through which the gas refrigerant flows.
- the repeater 53 and the indoor unit 52a are connected by a second liquid pipe 105a through which the liquid refrigerant flows and a second gas pipe 106a through which the gas refrigerant flows.
- the repeater 53 and the indoor unit 52b are connected by a second liquid pipe 105b through which the liquid refrigerant flows and a second gas pipe 106b through which the gas refrigerant flows.
- the air conditioner 100 according to the first embodiment is an air conditioner in which the indoor units 52a and 52b can independently perform a cooling operation or a heating operation, but the first embodiment 1 Is not limited to that. That is, the first embodiment can be applied to any type of air conditioner as long as it is an air conditioner provided with the repeater 53.
- the outdoor unit 51 includes a compressor 1, a four-way valve 3, an outdoor heat exchanger 2, an accumulator 4, a refrigerant flow control unit 54, and an outdoor controller 201.
- the compressor 1 sucks in the refrigerant, compresses it, and discharges it.
- a first pressure sensor 31 for detecting the pressure Pd of the discharged refrigerant is provided on the discharge side of the compressor 1, and a second pressure for detecting the pressure Ps of the sucked refrigerant is provided on the suction side of the compressor 1.
- a sensor 32 is provided. The pressure Pd and the pressure Ps detected by the first pressure sensor 31 and the second pressure sensor 32 are sent to the outdoor controller 201, respectively.
- the outdoor controller 201 functions as a controller that controls the entire air conditioner.
- the outdoor heat exchanger 2 allows the refrigerant to circulate inside and exchange heat between the refrigerant and the outdoor air.
- the outdoor heat exchanger 2 functions as an evaporator during the heating operation to evaporate and vaporize the refrigerant. Further, the outdoor heat exchanger 2 functions as a condenser during the cooling operation to condense and liquefy the refrigerant.
- the four-way valve 3 is a valve for switching the flow of the refrigerant, and the operation content such as cooling operation or heating operation is changed by the switching.
- the accumulator 4 stores a surplus of the liquid refrigerant.
- the refrigerant flow control unit 54 has a plurality of check valves 7a, 7b, 7c, and 7d, which will be described later, and allows the flow direction of the refrigerant to be in only one direction.
- the refrigerant flow control unit 54 includes four connection pipes 130, 131, 132, 133 that connect the connection portions a, b, c, and d, and four check valves 7a, 7b that allow the flow of the refrigerant in one direction. It includes 7c and 7d.
- the refrigerant flow control unit 54 is one of the components of the outdoor unit 51.
- the connection pipe 130 is a pipe that connects the connection portion c and the connection portion a.
- the connection pipe 131 is a pipe that connects the connection portion d and the connection portion b.
- the connection pipe 132 is a pipe that connects the connection portion c and the connection portion d.
- connection pipe 133 is a pipe that connects the connection portion a and the connection portion b. Further, the connection pipe 132 connects the first gas pipe 103 connected to the repeater 53 and the third gas pipe 102 connected to the compressor 1. Further, the connection pipe 133 connects the third liquid pipe 101 connected to the compressor 1 and the first liquid pipe 104 connected to the repeater 53.
- the check valve 7a is arranged in the connecting pipe 132 and allows the flow of the refrigerant from the connecting portion c to the connecting portion d.
- the check valve 7b is arranged in the connecting pipe 133 and allows the flow of the refrigerant from the connecting portion a to the connecting portion b.
- the check valve 7c is arranged in the connecting pipe 131 and allows the flow of the refrigerant from the connecting portion d to the connecting portion b.
- the check valve 7d is arranged in the connecting pipe 130 and allows the flow of the refrigerant from the connecting portion c to the connecting portion a.
- the indoor unit 52a includes an indoor heat exchanger 5a, an indoor throttle device 6a, and an indoor controller 202a.
- the indoor unit 52b includes an indoor heat exchanger 5b, an indoor throttle device 6b, and an indoor controller 202b.
- a second gas pipe 106a is connected to one end of the indoor heat exchanger 5a, and a second gas pipe 106b is connected to one end of the indoor heat exchanger 5b.
- Each of the indoor heat exchangers 5a and 5b circulates the refrigerant that has passed through the repeater 53 inside, and exchanges heat between the refrigerant and the air to be air-conditioned.
- Each of the indoor heat exchangers 5a and 5b functions as a condenser during the heating operation to condense and liquefy the refrigerant. Further, each of the indoor heat exchangers 5a and 5b functions as an evaporator during the cooling operation to evaporate and vaporize the refrigerant.
- An indoor throttle device 6a is connected to the other end of the indoor heat exchanger 5a, and an indoor throttle device 6b is connected to the other end of the indoor heat exchanger 5b.
- the second liquid pipe 105a is connected to the indoor throttle device 6a, and the second liquid pipe 105b is connected to the indoor throttle device 6b.
- Each of the indoor throttle devices 6a and 6b functions as a pressure reducing valve and an expansion valve, and decompresses and expands the refrigerant.
- Each of the indoor throttle devices 6a and 6b may be able to adjust the pressure of the refrigerant according to the air conditioning load, and for example, a flow rate control device such as an electronic expansion valve can be used.
- a first temperature sensor 33a and a second temperature sensor 34a are arranged in the indoor unit 52a.
- a first temperature sensor 33b and a second temperature sensor 34b are arranged in the indoor unit 52b.
- the first temperature sensor 33a and the second temperature sensor 34a detect the temperature of the refrigerant flowing in and out of the indoor heat exchanger 5a.
- the first temperature sensor 33b and the second temperature sensor 34b detect the temperature of the refrigerant flowing in and out of the indoor heat exchanger 5b. Each of the first temperature sensor 33a and the second temperature sensor 34a transmits a signal indicating the detected temperature to the indoor controller 202a. Further, each of the first temperature sensor 33b and the second temperature sensor 34b transmits a signal indicating the detected temperature to the indoor controller 202b.
- the repeater 53 includes a gas-liquid separator 8, first on-off valves 9a and 9b, second on-off valves 10a and 10b, a first throttle device 11, a second throttle device 12, a first heat exchanger 13, and a second heat exchange. It has a device 14, check valves 15a, 15b, 16a, 16b, and a repeater controller 203. Each component of the repeater 53 is controlled by the repeater controller 203. Further, each component of the repeater 53 is connected by a first bypass pipe 110, a first repeater liquid pipe 111, a first repeater gas pipe 112, and a second bypass pipe 113. The repeater 53 is connected to the outdoor unit 51 by the first liquid pipe 104 and the first gas pipe 103.
- the repeater 53 is connected to the indoor units 52a and 52b by the second liquid pipes 105a and 105b and the second gas pipes 106a and 106b, respectively.
- the repeater 53 controls the flow of the refrigerant between the outdoor unit 51 and the indoor units 52a and 52b, and the indoor units 52a and 52b simultaneously perform cooling and heating operations.
- the simultaneous cooling / heating operation refers to an operation in which one indoor unit performs a cooling operation and the other indoor unit performs a heating operation.
- FIG. 1 is a diagram showing a case where there are two indoor units, but by increasing the number of on-off valves 9, on-off valves 10, and check valves 15 and 16, up to 16 indoor units can be used. It can be connected to the unit 52.
- the maximum number of indoor units 52 has been described here as 16, the maximum number of indoor units 52 is not limited to 16, and the maximum number of indoor units 52 may be any number of 1 or more.
- the gas-liquid separator 8 separates the refrigerant into a liquid refrigerant and a gas refrigerant, and is connected to the first liquid pipe 104, the first repeater liquid pipe 111, and the first repeater gas pipe 112.
- the first liquid pipe 104 connects the outdoor unit 51 and the gas-liquid separator 8.
- the first repeater liquid pipe 111 connects the gas-liquid separator 8 and the check valves 15a and 15b, respectively.
- the first repeater gas pipe 112 connects the gas-liquid separator 8 and the first on-off valves 9a and 9b, respectively.
- the second gas pipe 106a is branched and connected to the first on-off valve 9a and the second on-off valve 10a.
- the second gas pipe 106b is branched and connected to the first on-off valve 9b and the second on-off valve 10b.
- the first on-off valves 9a and 9b allow the gas refrigerant flowing through the first repeater gas pipe 112 to pass in the direction of outflow from the repeater 53 or shut off.
- the first on-off valves 9a and 9b are opened when the indoor units 52a and 52b connected via the second gas pipes 106a and 106b are in the heating operation.
- the second on-off valves 10a and 10b allow the gas refrigerant flowing from the second gas pipes 106a and 106b of the indoor units 52a and 52b to pass in the direction of flowing into the repeater 53 or shut off.
- the second on-off valves 10a and 10b are opened when the indoor units 52a and 52b connected via the second gas pipes 106a and 106b are in the cooling operation.
- the second on-off valves 10a and 10b are connected to the first gas pipe 103.
- the first heat exchanger 13 circulates the liquid refrigerant separated in the gas-liquid separator 8 and the liquid refrigerant circulated in the second heat exchanger 14 to exchange heat.
- the first throttle device 11 decompresses the liquid refrigerant that has passed through the first heat exchanger 13 and causes the liquid refrigerant to flow into the second heat exchanger 14.
- the second heat exchanger 14 circulates the refrigerant decompressed in the first drawing device 11 and the liquid refrigerant decompressed in the second drawing device 12 to exchange heat.
- the first heat exchanger 13, the first throttle device 11, and the second heat exchanger 14 are interposed between the gas-liquid separator 8 and the repeater trigeminal portion 55, and are connected by the first repeater liquid pipe 111. Has been done.
- the first bypass pipe 110 connects the repeater three-pronged portion 55 and the first gas pipe 103 via the second throttle device 12, the second heat exchanger 14, and the first heat exchanger 13 to connect the liquid.
- the refrigerant is recovered and returned to the outdoor unit 51.
- flow control devices such as an electronic expansion valve, which can precisely control the flow rate by changing the opening degree, may be used.
- the check valve 16a allows the flow of the refrigerant from the connecting portion f to the connecting portion e.
- the check valve 15a allows the flow of the refrigerant from the connecting portion g to the connecting portion f.
- the check valve 16b allows the flow of the refrigerant from the connecting portion h to the connecting portion e.
- the check valve 15b allows the flow of the refrigerant from the connecting portion g to the connecting portion h.
- the first repeater liquid pipe 111 is branched and connected to the check valves 15a and 15b at the connection portion g, respectively.
- the second liquid pipe 105a is branched and connected to the check valves 15a and 16a at the connection portion f.
- the check valve 15a and the check valve 16a are connected to the second liquid pipe 105a so as to be opposite to each other.
- the second liquid pipe 105b is branched and connected to the check valves 15b and 16b at the connection portion h.
- the check valve 15b and the check valve 16b are connected to the second liquid pipe 105b so as to be opposite to each other.
- the second bypass pipe 113 connects each of the check valves 16a and 16b to the first heat exchanger 13.
- the second bypass pipe 113 branches at the connection portion e and is connected to each of the check valves 16a and 16b.
- the connection portion g is connected to the first bypass pipe 110 and the first repeater liquid pipe 111 via the repeater trigeminal portion 55.
- FIG. 2 is a perspective view showing the configuration of the entire repeater provided in the air conditioner according to the first embodiment.
- FIG. 2 shows the appearance of the repeater 53 to which up to 16 indoor units 52 can be connected.
- the repeater 53 has a rectangular parallelepiped shape. That is, the repeater 53 has an upper surface, a lower surface, and four side surfaces.
- the side surface A one of the two side surfaces provided in the lateral direction
- the side surface B one of the two side surfaces provided in the longitudinal direction
- the side surface A and the side surface B are adjacent to each other and orthogonal to each other.
- a second repeater gas pipe 141 and a second repeater liquid pipe 142 are provided on the side surface A.
- the second repeater gas pipe 141 and the second repeater liquid pipe 142 are provided so as to project outward from the side surface A in a direction perpendicular to the side surface A, respectively.
- the second repeater gas pipe 141 is connected to the first gas pipe 103 shown in FIG. 1 by brazing.
- the second repeater liquid pipe 142 is connected to the first liquid pipe 104 shown in FIG. 1 by brazing.
- 16 liquid refrigerant supply pipes 143 and 16 gas refrigerant supply pipes 144 are provided on the side surface B.
- Each of the liquid refrigerant supply pipe 143 and each of the gas refrigerant supply pipe 144 is provided so as to project outward from the side surface B in a direction perpendicular to the side surface B.
- Each of the liquid refrigerant supply pipes 143 is a first refrigerant supply pipe
- each of the gas refrigerant supply pipes 144 is a second refrigerant supply pipe.
- One first refrigerant supply pipe and one second refrigerant supply pipe form one pair, and the one pair is connected to one indoor unit 52. Note that FIG.
- the repeater 53 can be connected to up to 16 indoor units 52.
- the number of the liquid refrigerant supply pipes 143 and the number of the gas refrigerant supply pipes 144 are not limited to 16, but may be any number, and may be equal to or greater than the number of indoor units 52 to be connected.
- Each of the liquid refrigerant supply pipes 143 is connected to the second liquid pipes 105a and 105b shown in FIG. 1 by flare nuts.
- each of the gas refrigerant supply pipes 144 is connected to the second gas pipes 106a and 106b shown in FIG. 1 by flare nuts.
- the liquid refrigerant supply pipe 143 is located above the gas refrigerant supply pipe 144. However, each of the liquid refrigerant supply pipes 143 may be shifted to the right or left by a preset distance, not directly above the corresponding gas refrigerant supply pipe 144. Further, the repeater 53 has a hanging metal fitting 145. The repeater 53 is installed by being suspended from the ceiling or the like in the building by using a hanging bolt or the like via the hanging metal fitting 145.
- the axes of the liquid refrigerant supply pipe 143 and the gas refrigerant supply pipe 144 are oriented in the direction in which the liquid refrigerant supply pipe 143 and the gas refrigerant supply pipe 144 extend, that is, in the direction perpendicular to the side surface B. We will call it the direction. Therefore, the axial direction is the horizontal direction in which the repeater 53 is suspended.
- the two liquid refrigerant supply pipes 143 are connected to the second liquid refrigerant pipes 105a and 105b, respectively, and the two gas refrigerant supply pipes 144 are connected.
- one liquid refrigerant supply pipe 143 is connected to the second liquid refrigerant pipe 105a and one gas refrigerant supply pipe 144 is connected to the second gas pipe 106a. It will be explained by listing in. Therefore, the description of the second liquid pipe 105b and the second gas pipe 106b will be omitted. Further, FIGS.
- FIGS. 6 to 9 show a repeater 53R as a reference example for explaining the effect of the first embodiment.
- the case where the liquid refrigerant supply pipe 143R is connected to the second liquid pipe 105a and the gas refrigerant supply pipe 144R is connected to the second gas pipe 106a will be described as an example. To do. Therefore, in the description of FIGS. 6 to 9, the description of the second liquid pipe 105b and the second gas pipe 106b will be omitted.
- FIG. 6 is a partial side view showing the configuration of the refrigerant supply pipe of the repeater of the reference example.
- FIG. 6 shows a side view of the repeater 53R as a reference example when viewed from the side surface A side.
- the liquid refrigerant supply pipe 143R and the gas refrigerant supply pipe 144R are provided so as to project from the side surface B, respectively.
- the liquid refrigerant supply pipe 143R is provided above the gas refrigerant supply pipe 144R.
- the length L1 of the protruding portion of the liquid refrigerant supply pipe 143R is shorter than or the same as the length L2 of the gas refrigerant supply pipe 144R.
- the liquid refrigerant supply pipe 143R has a first pipe 161aR fixed to the side surface B of the repeater 53R, and a liquid side joint 151aR provided at the tip of the first pipe 161aR.
- the liquid side joint 151aR is the first joint.
- the liquid side joint 151aR is connected to the second liquid pipe 105 by using the liquid side flare nut 152aR.
- the liquid side flare nut 152aR is provided at the tip of the second liquid pipe 105.
- the gas refrigerant supply pipe 144R has a second pipe 161bR fixed to the side surface B of the repeater 53R, and a gas side joint 151bR provided at the tip of the second pipe 161bR.
- the gas side joint 151bR is a second joint.
- the gas side joint 151bR is connected to the second gas pipe 106 by using the gas side flare nut 152bR.
- the gas side flare nut 152bR is provided at the tip of the second
- FIG. 7 is a partial side view showing the configuration of a joint provided in the refrigerant supply pipe of the repeater of the reference example.
- FIG. 7 shows the configuration of the liquid side joint 151aR of the reference example shown in FIG.
- the liquid side joint 151aR has a first portion 155R formed of a hexagonal tube and a second portion 156R fitted in the liquid side flare nut 152aR. Since the first portion 155R is composed of a hexagonal tube, it has six outer surfaces and six outer corners. Further, one end of the first portion 155R in the axial direction is brazed and fixed to the first pipe 161aR of the liquid refrigerant supply pipe 143R.
- the brazed portion will be referred to as a brazed portion 154R.
- the outer diameter of the first portion 155R is larger than the outer diameter of the second portion 156R.
- the second portion 156R has a circular tube shape, and the tip portion of the second portion 156R is tapered toward the tip.
- FIGS. 8 and 9 A state in which a spanner is applied to the first portion 155R is shown in FIGS. 8 and 9.
- FIG. 8 is a diagram showing a state in which the joint provided in the refrigerant supply pipe of the repeater 53R of the reference example is deformed.
- FIG. 9 is a diagram showing a state in which a spanner is applied to the joint of the reference example shown in FIG. 7.
- FIG. 8 is a diagram showing a state in which the joint provided in the refrigerant supply pipe of the repeater 53R of the reference example is deformed.
- FIG. 8 shows a view when viewed from the side surface B side of the repeater 53R
- FIG. 9 shows a view when viewed from the side surface side of the repeater 53R facing the side surface A.
- the first portion 155R of the liquid side joint 151aR is sandwiched and fixed by the spanner 1000.
- the arrow P indicates the direction of the force applied to the liquid side joint 151aR by the spanner 1000.
- FIG. 8 shows a state when the spanner 1000 is hung on the first portion 155R of the liquid side joint 151aR at an inappropriate angle and the spanner 1000 slides.
- the spanner 1000 does not sandwich the two opposing outer surfaces of the first portion 155R, but sandwiches the two opposing outer corners of the first portion 155R.
- an unreasonable force is applied to the liquid side joint 151aR.
- One part 155R and the first pipe 161aR may be deformed. As a result, the brazed portion 154R may be cracked and the refrigerant may leak.
- FIG. 3 is a partial side view showing the configuration of the refrigerant supply pipe of the repeater 53 according to the first embodiment.
- FIG. 3 shows a state seen from the side surface A side of the repeater 53.
- the liquid refrigerant supply pipe 143 and the gas refrigerant supply pipe 144 are provided so as to project from the side surface B in a direction perpendicular to the side surface B of the repeater 53, respectively.
- the liquid refrigerant supply pipe 143 is provided above the gas refrigerant supply pipe 144.
- the length L1 of the protruding portion of the liquid refrigerant supply pipe 143 is longer than the length L2 of the gas refrigerant supply pipe 144.
- the length L1 of the protruding portion of the liquid refrigerant supply pipe 143 is 120 mm.
- the length L1 is not limited to 120 mm, and may be appropriately set in the range of, for example, 100 to 150 mm.
- the liquid refrigerant supply pipe 143 has a first pipe 161a fixed to the side surface B of the repeater 53, and a liquid side joint 151a provided at the tip of the first pipe 161a.
- the liquid side joint 151a is a first joint.
- the liquid side joint 151a is connected to the second liquid pipe 105 by using the liquid side flare nut 152a.
- the gas refrigerant supply pipe 144 has a second pipe 161b fixed to the side surface B of the repeater 53, and a gas side joint 151b provided at the tip of the second pipe 161b.
- the gas side joint 151b is a second joint.
- the gas side joint 151b is connected to the second gas pipe 106 by using the gas side flare nut 152b.
- the configuration of the liquid side joint 151a itself according to the first embodiment is basically the same as the configuration of the reference example shown in FIG. 7. That is, the liquid-side joint 151a of the first embodiment has a first portion 155 formed of a hexagonal tube and a second portion 156 fitted in the liquid-side flare nut 152a.
- the first portion 155 and the second portion 156 are integrally molded. Alternatively, the first portion 155 and the second portion 156 may be formed separately and then joined. Since the second part 156 is not shown in FIG. 3, refer to the second part 156R of FIG. 7 or the second part 156 of FIG. 4 described later. Since the first portion 155 is composed of a hexagonal tube, it has six outer surfaces and six outer corners.
- the first portion 155 has a hexagonal outer peripheral portion and a circular inner peripheral portion. Further, one end of the first portion 155 in the axial direction is brazed and fixed to the first pipe 161a of the liquid refrigerant supply pipe 143.
- the brazed portion will be referred to as a brazed portion 154. Since the brazing portion 154 is not shown in FIG. 3, please refer to the brazing portion 154R of FIG. 7 or the brazing portion 154 of FIG. 4 to be described later.
- the second portion 156 is provided at the end of the first portion 155 on the indoor unit 52a side, and is provided to the indoor heat exchanger 5a of the indoor unit 52a via the second liquid pipe 105a and the indoor throttle device 6a. Be connected.
- the second portion 156 has a circular tube shape, and the tip portion of the second portion 156 is tapered toward the tip. Since the second portion 156 is fastened to the liquid side flare nut 152a, the outer peripheral surface of the second portion 156 and the inner peripheral surface of the liquid side flare nut 152a are threaded, if necessary. The outer diameter of the first portion 155 is larger than the outer diameter of the second portion 156.
- the length L1 of the portion protruding from the side surface B of the liquid refrigerant supply pipe 143 is the liquid refrigerant supply of the reference example of FIG. It is longer than the pipe 143R.
- the length L1 of the liquid refrigerant supply pipe 143 is, for example, twice the length L1 of the liquid refrigerant supply pipe 143R of FIG.
- the length L2 of the gas refrigerant supply pipe 144 in the first embodiment is the same as the length L2 of the gas refrigerant supply pipe 144R of FIG. Therefore, in the first embodiment, as shown in FIG. 3, the length L1 of the liquid refrigerant supply pipe 143 is longer than the length L2 of the gas refrigerant supply pipe 144.
- the spanner 1000 it is easy to insert the spanner 1000 into the first portion 155 of the liquid side joint 151a from the lower side of the repeater 53 and tighten the liquid side flare nut 152a.
- the gas refrigerant supply pipe 144 does not get in the way, and the spanner 1000 can be inserted into the first portion 155 of the liquid side joint 151a at a natural angle. ..
- the deformation of the first portion 155 of the liquid side joint 151a and the deformation of the liquid refrigerant supply pipe 143 can be suppressed.
- the length L1 of the liquid refrigerant supply pipe 143 shown in FIG. 3 will be described.
- the two ends in the axial direction of the first portion 155 of the liquid side joint 151a one on the repeater 53 side is referred to as “the end on the repeater 53 side", and the other is referred to as "indoor”. It will be referred to as "the end on the unit 52 side”.
- the length L1 is such that the distance from the side surface B to the end of the first portion 155 of the liquid side joint 151a on the indoor unit side is larger than the distance from the side surface B to the tip of the gas refrigerant supply pipe 144. Should be set. Specifically, as shown in FIG.
- the first threshold value Dth is set based on the value of the thickness T of the spanner 1000. Specifically, it is desirable that the first threshold value Dth is set to the value of the thickness T of the spanner 1000. For example, when the axial length S of the first portion 155 of the liquid side joint 151a is 17 mm, the thickness T of the round spanner of JISB4630 is 8 mm. Therefore, the first threshold value Dth may be set to 8 mm, and the length L1 may be set so that the distance D is equal to or greater than the first threshold value Dth.
- the first threshold value Dth may be appropriately set according to the thickness T of the spanner 1000 after the change, and the length L1 may be set so that the distance D becomes equal to or greater than the first threshold value Dth.
- the tool used has been described as a spanner here, the present invention is not limited to this case, and other tools may be used.
- the first threshold value Dth may be appropriately set based on the thickness T of the tool.
- a plurality of liquid refrigerant supply pipes 143 are arranged at regular intervals on the side surface B of the repeater 53. Therefore, when the spanner 1000 is used for one liquid refrigerant supply pipe 143, it is desirable that the spanner 1000 can be rotated without the spanner 1000 and the other liquid refrigerant supply pipe 143 coming into contact with each other. For that purpose, it is desirable that the adjacent liquid refrigerant supply pipes 143 are arranged through a gap of a preset second threshold value Wth or more. As shown in FIG. 8, when the width of the spanner 1000 is the width W, the second threshold value Wth is set based on the width W of the spanner 1000.
- the second threshold value Wth is set to 1/2 of the width W of the spanner 1000.
- the spanner 1000 can be rotated without contact between the spanner 1000 and the other liquid refrigerant supply pipes 143. Can be made to.
- This also applies to the gas refrigerant supply pipe 144. That is, it is desirable that the adjacent gas refrigerant supply pipes 144 are arranged via a gap having a second threshold value Wth or more.
- the arrangement interval of the liquid refrigerant supply pipe 143 and the arrangement interval of the gas refrigerant supply pipe 144 do not have to be constant.
- the tool used has been described as a spanner, but the present invention is not limited to this case, and other tools may be used.
- the second threshold value Wth may be appropriately set based on the width W of the tool.
- FIG. 4 is a partial side view showing the configuration of another example of the refrigerant supply pipe of the repeater 53 according to the first embodiment.
- FIG. 4 shows a modified example of the liquid side joint 151a as a configuration of another example of the refrigerant supply pipe according to the first embodiment.
- the liquid-side joint 151a has a first portion 155 composed of a hexagonal tube, a second portion 156 fitted in the liquid-side flare nut 152a, and a first liquid refrigerant supply pipe 143. It has a third portion 153 that is brazed to the pipe 161a.
- the portion brazed to the third portion 153 and the first pipe 161a of the liquid refrigerant supply pipe 143 will be referred to as a brazed portion 154.
- the third portion 153 is arranged at the end of the first portion 155 on the repeater 53 side, and the second portion 156 is arranged on the indoor unit 52 side of the first portion 155.
- the third part 153 is composed of a circular tube. Therefore, in the shape of the third portion 153, both the outer peripheral portion and the inner peripheral portion are circular.
- the shapes of the first portion 155 and the second portion 156 of the liquid side joint 151a are basically the same as those of the first portion 155 and the second portion 156 of the liquid side joint 151a shown in the first embodiment.
- the outer diameter of the third portion 153 is smaller than the outer diameter of the first portion 155. Further, the outer diameter of the second portion 156 is smaller than the outer diameter of the first portion 155. The outer diameter of the second portion 156 and the outer diameter of the third portion 153 may be the same or different. As described above, in the modified example of FIG. 4, the liquid side joint 151a has a first portion 155, a second portion 156, and a circular tube-shaped third portion 153.
- the shape of the third portion 153 brazed to the first pipe 161a of the liquid refrigerant supply pipe 143 by the brazing portion 154 is not a hexagonal pipe shape but a circle. It has a tube shape. Further, the axial length S of the first portion 155 of the liquid side joint 151a of the first embodiment described above is 17 mm. On the other hand, in the modified example of FIG. 4, the axial length of the third portion 153 of the liquid side joint 151a is 5 mm, and the axial length S of the first portion of the liquid side joint 151a is 12 mm. ..
- these lengths are examples and are not limited to these.
- the total length of the first portion 155 and the third portion 153 in the modified example is the same as the length of the first portion 155 of the first embodiment. It may be different.
- FIG. 5 is a diagram showing a state in which a spanner is applied to a joint provided in the refrigerant supply pipe shown in FIG.
- FIG. 5 the liquid side joint 151a of the modified example shown in FIG. 4 is shown.
- FIG. 9 is a diagram showing a state in which a spanner is applied to the joint of the reference example shown in FIG. 7.
- the liquid side joint 151aR of the reference example is shown.
- FIG. 9 shows a state in which the spanner 1000 is hung on the liquid side joint 151aR of the reference example.
- FIG. 9 is basically a side view, but only the hatched portion is a cross-sectional view.
- the position of the spanner 1000 is close to the brazed portion 154R. Therefore, when the first portion 155R of the liquid side joint 151aR is deformed, the brazing portion 154R is likely to be affected, and the brazing portion 154R may be cracked. Further, as is clear from the cross-sectional view of FIG. 9, since the spanner 1000 is hung only on the thin portion of the first portion 155R of the liquid side joint 151aR, the first portion 155R is deformed. It's getting easier.
- FIG. 5 shows a state in which the spanner 1000 is hung on the liquid side joint 151a of the modified example of the first embodiment shown in FIG.
- FIG. 5 is basically a side view, but only the hatched portion is a cross-sectional view.
- the arrow P indicates the direction of the force applied to the liquid side joint 151a by the spanner 1000.
- the liquid side joint 151a has a third portion 153 having a circular tube shape. At this time, the spanner 1000 is hung on the first portion 155 of the liquid side joint 151a, and the spanner 1000 is not hung on the third portion 153.
- the distance between the brazing portion 154 and the spanner 1000 is larger than that of the reference example of FIG. As a result, even if the first portion 155 of the liquid side joint 151a is deformed, the brazing portion 154 is not affected. Further, as is clear from the cross-sectional view of FIG. 5, since the spanner 1000 is hung on the thick portion of the first portion 155 of the liquid side joint 151a, the first portion 155 is not easily deformed. .. As a result, it is possible to prevent the brazing portion 154 from being cracked and to suppress the occurrence of refrigerant leakage.
- the gas side joint 151b may have a circular tube-shaped third portion 153.
- FIGS. 4 and 5 will be diverted and described.
- reference numerals 151a and 161b in FIGS. 4 and 5 are read as reference numerals 151b and 161b, respectively.
- the gas side joint 151b has a first portion 155, a second portion 156, and a third portion 153.
- the first portion 155 of the gas side joint 151b is provided at the tip of the second pipe 161b.
- the second portion 156 of the gas side joint 151b is provided at the end of the first portion 155 of the gas side joint 151b on the indoor unit 52 side, and the second liquid pipe 105b is connected to the indoor heat exchanger 5b of the indoor unit 52. And are connected via the indoor throttle device 6b.
- the third portion 153 of the gas side joint 151b is provided at the end of the first portion 155 of the gas side joint 151b on the repeater 53 side, and is brazed to the second pipe 161b of the gas refrigerant supply pipe 144 by a brazing portion 154. It is brazed. Needless to say, even when the gas side joint 151b has the third portion 153, the same effect as when the liquid side joint 151a has the third portion 153 can be obtained.
- the repeater 53 has a liquid refrigerant supply pipe 143 as the first refrigerant supply pipe and a gas refrigerant supply pipe 144 as the second refrigerant supply pipe. doing.
- the liquid refrigerant supply pipe 143 and the gas refrigerant supply pipe 144 are provided so as to project from one and the same side surface B of the repeater 53.
- the liquid refrigerant supply pipe 143 is arranged above the gas refrigerant supply pipe 144.
- the length L1 of the portion protruding from the side surface B of the liquid refrigerant supply pipe 143 is set to be longer than the length L2 of the portion protruding from the side surface B of the gas refrigerant supply pipe 144.
- the gas refrigerant supply pipe 144 does not get in the way, and the spanner 1000 is inserted into the liquid side joint 151a at a natural angle to tighten the liquid side flare nut 152a. be able to. Therefore, the spanner 1000 is not hung on the liquid side joint 151a at an unreasonable angle. As a result, the deformation of the liquid side joint 151a can be suppressed, so that damage to the brazed portion 154 is suppressed and the risk of refrigerant leakage is suppressed.
- the first refrigerant supply pipe is a liquid refrigerant supply pipe 143
- the second refrigerant supply pipe is a gas refrigerant supply pipe 144
- the first refrigerant supply pipe may be the gas refrigerant supply pipe 144
- the second refrigerant supply pipe may be the liquid refrigerant supply pipe 143.
- the length L1 of the first refrigerant supply pipe is set to the length of the second refrigerant supply pipe. Make it longer than L2. Thereby, the workability at the time of connecting the first refrigerant supply pipe can be improved.
- the liquid refrigerant supply pipe 143 has a first pipe 161a and a liquid side joint 151a as the first joint.
- the liquid side joint 151a has a first portion 155, a second portion 156, and a third portion 153.
- the first portion 155 of the first joint is arranged at the tip of the first pipe 161a.
- the second portion 156 is provided at the end of the first portion 155 on the indoor unit 52a side, and is connected to the indoor heat exchanger 5a of the indoor unit 52a.
- the third portion 153 is provided at the end of the first portion 155 on the repeater 53 side, and is fixed to the first pipe 161a by the brazing portion 154.
- the first portion 155, the second portion 156, and the third portion 153 are integrally molded. Alternatively, at least one of the first portion 155, the second portion 156, and the third portion 153 may be formed separately and then joined. Since the spanner 1000 is hung on the first portion 155, the spanner 1000 is not hung on the third portion 153. Since the third portion 153 is arranged between the first portion 155 and the brazing portion 154, the distance between the brazing portion 154 and the spanner 1000 becomes large during the connection work.
- the gas side joint 151b as the second joint may have a first portion 155, a second portion 156, and a third portion 153.
- the third portion 153 is fixed to the second pipe 161b by the brazing portion 154. Therefore, since the third portion 153 is located between the first portion 155 and the brazing portion 154, the distance between the brazing portion 154 and the spanner 1000 becomes large during the connection work. As a result, even if the first portion 155 of the gas side joint 151b is deformed, the effect on the brazing portion 154 is unlikely to occur, cracks can be prevented from entering the brazing portion 154, and the occurrence of refrigerant leakage can be suppressed. it can.
- 1 Compressor 2 Outdoor heat exchanger, 3 Four-way valve, 4 Accumulator, 5a Indoor heat exchanger, 5b Indoor heat exchanger, 6a Indoor squeezing device, 6b Indoor squeezing device, 7a Check valve, 7b Check valve, 7c Check valve, 7d check valve, 8 gas-liquid separator, 9 on-off valve, 9a first on-off valve, 9b first on-off valve, 10 on-off valve, 10a second on-off valve, 10b second on-off valve, 11 first Squeezing device, 12 2nd squeezing device, 13 1st heat exchanger, 14 2nd heat exchanger, 15 check valve, 15a check valve, 15b check valve, 16 check valve, 16a check valve, 16b check Stop valve, 31 1st pressure sensor, 32 2nd pressure sensor, 33a 1st temperature sensor, 33b 1st temperature sensor, 34a 2nd temperature sensor, 34b 2nd temperature sensor, 51 outdoor unit, 52 indoor unit, 52a indoor unit , 52b indoor unit, 53 repeater
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Abstract
Description
実施の形態1に係る空気調和装置は、複数の室内ユニットを有して、全冷房運転、全暖房運転、及び、冷暖同時運転を行うことが可能な空気調和装置である。図1は、本実施の形態1に係る空気調和装置100の構成を示す図である。空気調和装置100は、室外ユニット51と、複数の室内ユニット52a、52bと、中継器53とを備える。中継器53は、室外ユニット51と室内ユニット52a、52bのそれぞれとの間に設けられている。
室外ユニット51は、圧縮機1、四方弁3、室外熱交換器2、アキュムレータ4、冷媒流れ制御ユニット54、及び、室外側制御器201を備える。圧縮機1は、冷媒を吸入し、圧縮して吐出する。圧縮機1として、例えばインバータ回路など、容量制御により単位時間あたりに送り出す冷媒の量を変化させることができる装置を用いることができる。圧縮機1の吐出側には、吐出される冷媒の圧力Pdを検知する第1圧力センサ31が設けられ、圧縮機1の吸入側には、吸入される冷媒の圧力Psを検知する第2圧力センサ32が設けられている。第1圧力センサ31及び第2圧力センサ32によって検出された圧力Pd及び圧力Psは、それぞれ、室外側制御器201に送られる。室外側制御器201は、空気調和装置全体を統括する制御器として機能する。
冷媒流れ制御ユニット54は、接続部a、b、c、dを接続する4つの接続配管130、131、132、133と、冷媒の流れを一方向に許容する4つの逆止弁7a、7b、7c、7dとを備える。冷媒流れ制御ユニット54は、室外ユニット51の構成要素の1つである。接続配管130は、接続部cと接続部aとを接続する配管である。接続配管131は、接続部dと接続部bとを接続する配管である。接続配管132は、接続部cと接続部dとを接続する配管である。接続配管133は、接続部aと接続部bとを接続する配管である。また、接続配管132は、中継器53に接続された第1ガス配管103と、圧縮機1に接続された第3ガス配管102とを接続している。また、接続配管133は、圧縮機1に接続された第3液配管101と、中継器53に接続された第1液配管104とを接続している。
室内ユニット52aは、室内熱交換器5aと、室内絞り装置6aと、室内側制御器202aとを備える。室内ユニット52bは、室内熱交換器5bと、室内絞り装置6bと、室内側制御器202bとを備える。室内熱交換器5aの一端には第2ガス配管106aが接続され、室内熱交換器5bの一端には第2ガス配管106bが接続されている。室内熱交換器5a、5bのそれぞれは、中継器53を通過した冷媒を内部に流通させ、冷媒と空調対象となる空気との間の熱交換を行う。室内熱交換器5a、5bのそれぞれは、暖房運転時には、凝縮器として機能し、冷媒を凝縮して液化させる。また、室内熱交換器5a、5bのそれぞれは、冷房運転時には、蒸発器として機能し、冷媒を蒸発させ、気化させる。室内熱交換器5aの他端には室内絞り装置6aが接続され、室内熱交換器5bの他端には室内絞り装置6bが接続されている。また、室内絞り装置6aには第2液配管105aが接続され、室内絞り装置6bには第2液配管105bが接続されている。室内絞り装置6a、6bのそれぞれは、減圧弁及び膨張弁として機能し、冷媒を減圧して膨張させる。室内絞り装置6a、6bのそれぞれは、空調負荷に応じて冷媒の圧力調整が可能であればよく、例えば電子式膨張弁などの流量制御機器を用いることができる。室内ユニット52aには、第1温度センサ33a、及び、第2温度センサ34aが配置されている。同様に、室内ユニット52bには、第1温度センサ33b、及び、第2温度センサ34bが配置されている。第1温度センサ33a及び第2温度センサ34aは、室内熱交換器5aに流出入する冷媒の温度を検知する。第1温度センサ33b及び第2温度センサ34bは、室内熱交換器5bに流出入する冷媒の温度を検知する。第1温度センサ33a及び第2温度センサ34aのそれぞれは、検知した温度を示す信号を室内側制御器202aに送信する。また、第1温度センサ33b及び第2温度センサ34bのそれぞれは、検知した温度を示す信号を室内側制御器202bに送信する。
中継器53は、気液分離器8、第1開閉弁9a、9b、第2開閉弁10a、10b、第1絞り装置11、第2絞り装置12、第1熱交換器13、第2熱交換器14、逆止弁15a、15b、16a、16b、及び、中継器制御器203を有している。中継器53の各構成要素は、中継器制御器203により制御される。また、中継器53の各構成要素は、第1バイパス配管110、第1中継器液配管111、第1中継器ガス配管112、及び、第2バイパス配管113により接続されている。中継器53は、第1液配管104及び第1ガス配管103により室外ユニット51に接続されている。また、中継器53は、第2液配管105a、105b、及び、第2ガス配管106a、106bにより、室内ユニット52a、52bのそれぞれに接続されている。中継器53が室外ユニット51と各室内ユニット52a、52bとの間の冷媒の流れを制御し、室内ユニット52a、52bが冷暖同時運転を実施する。ここで、冷暖同時運転とは、一方の室内ユニットで冷房運転を行い、他の室内ユニットで暖房運転を行う運転を指す。なお、図1は、室内ユニットが2台の場合を示した図であるが、開閉弁9、開閉弁10、及び、逆止弁15、16の数を増やすことで、最大16台までの室内ユニット52と接続することができる。なお、ここでは、室内ユニット52の個数の最大値を16台として説明したが、それに限定されず、室内ユニット52の個数の最大値は、1以上の任意の個数でよい。
Claims (6)
- 室外熱交換器を有する室外ユニットと、
室内熱交換器を有する室内ユニットと、
前記室外ユニットと前記室内ユニットとの間に設けられ、前記室内ユニットの前記室内熱交換器と接続される第1の冷媒供給配管及び第2の冷媒供給配管を有する中継器と
を備え、
前記第1の冷媒供給配管及び前記第2の冷媒供給配管は、前記中継器の同一の側面からそれぞれ突出して設けられ、
前記第1の冷媒供給配管は前記第2の冷媒供給配管の上方に配置され、
前記第1の冷媒供給配管の前記側面から突出している部分の長さは、前記第2の冷媒供給配管の前記側面から突出している部分の長さよりも長い、
空気調和装置。 - 前記第1の冷媒供給配管は、
前記中継器の前記側面に固定された第1配管と、
前記第1配管の先端に設けられた第1ジョイントと
を有し、
前記第1ジョイントは、
前記第1配管の先端に配置された第1部分と、
前記第1部分の前記室内ユニット側の端部に設けられ、前記室内ユニットの前記室内熱交換器と接続される第2部分と
を有し、
前記側面から前記第1部分の前記室内ユニット側の前記端部までの距離は、前記側面から前記第2の冷媒供給配管の先端までの距離よりも大きい、
請求項1に記載の空気調和装置。 - 前記第1ジョイントは、
前記第1部分の前記中継器側の端部に設けられ、前記第1の冷媒供給配管の前記第1配管に固定された、円管形状の第3部分
をさらに有する、
請求項2に記載の空気調和装置。 - 前記第1の冷媒供給配管の個数が2以上で、前記第2の冷媒供給配管の個数が2以上であり、
隣接する前記第1の冷媒供給配管同士は空隙を介して配置され、
隣接する前記第2の冷媒供給配管同士は空隙を介して配置されている、
請求項1~3のいずれか1項に記載の空気調和装置。 - 前記第2の冷媒供給配管は、
前記中継器の前記側面に固定された第2配管と、
前記第2配管の先端に設けられた第2ジョイントと
を有し、
前記第2ジョイントは、第1部分と第2部分と第3部分とを有し、
前記第2ジョイントの前記第1部分は、前記第2配管の先端に設けられ、
前記第2ジョイントの前記第2部分は、前記第2ジョイントの前記第1部分の前記室内ユニット側の端部に設けられ、前記室内ユニットの前記室内熱交換器と接続され、
前記第2ジョイントの前記第3部分は、前記第2ジョイントの前記第1部分の前記中継器側の端部に設けられ、前記第2の冷媒供給配管の前記第2配管に固定される、
請求項1~4のいずれか1項に記載の空気調和装置。 - 前記第1の冷媒供給配管は、液冷媒を流通させる液冷媒供給配管であり、
前記第2の冷媒供給配管は、ガス冷媒を流通させるガス冷媒供給配管である、
請求項1~5のいずれか1項に記載の空気調和装置。
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US17/437,547 US20220154949A1 (en) | 2019-05-16 | 2019-05-16 | Air-conditioning apparatus |
| PCT/JP2019/019539 WO2020230321A1 (ja) | 2019-05-16 | 2019-05-16 | 空気調和装置 |
| JP2021519231A JP7118258B2 (ja) | 2019-05-16 | 2019-05-16 | 空気調和装置 |
| EP19928505.7A EP3971494B1 (en) | 2019-05-16 | 2019-05-16 | Air conditioning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2019/019539 WO2020230321A1 (ja) | 2019-05-16 | 2019-05-16 | 空気調和装置 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2020230321A1 true WO2020230321A1 (ja) | 2020-11-19 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2019/019539 Ceased WO2020230321A1 (ja) | 2019-05-16 | 2019-05-16 | 空気調和装置 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20220154949A1 (ja) |
| EP (1) | EP3971494B1 (ja) |
| JP (1) | JP7118258B2 (ja) |
| WO (1) | WO2020230321A1 (ja) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2023057646A (ja) * | 2021-10-12 | 2023-04-24 | 東尾メック株式会社 | ヘッダー構造体 |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04217760A (ja) * | 1990-12-20 | 1992-08-07 | Mitsubishi Electric Corp | 空気調和装置 |
| JPH06137591A (ja) * | 1992-10-29 | 1994-05-17 | Matsushita Electric Ind Co Ltd | 空気調和機の冷媒分岐箱 |
| JP3235189B2 (ja) | 1992-06-25 | 2001-12-04 | 三菱電機株式会社 | 空気調和装置 |
| JP2002277003A (ja) * | 2001-03-19 | 2002-09-25 | Fujitsu General Ltd | 空気調和機 |
| KR20150072991A (ko) * | 2013-12-20 | 2015-06-30 | 엘지전자 주식회사 | 냉매관 연결부재 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4375111B2 (ja) | 2004-05-14 | 2009-12-02 | 三菱電機株式会社 | 空気調和装置の冷媒回路分岐ユニット |
| CN102395841B (zh) * | 2009-04-17 | 2015-07-22 | 三菱电机株式会社 | 热媒介转换器及空调装置 |
-
2019
- 2019-05-16 WO PCT/JP2019/019539 patent/WO2020230321A1/ja not_active Ceased
- 2019-05-16 JP JP2021519231A patent/JP7118258B2/ja active Active
- 2019-05-16 EP EP19928505.7A patent/EP3971494B1/en active Active
- 2019-05-16 US US17/437,547 patent/US20220154949A1/en not_active Abandoned
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04217760A (ja) * | 1990-12-20 | 1992-08-07 | Mitsubishi Electric Corp | 空気調和装置 |
| JP3235189B2 (ja) | 1992-06-25 | 2001-12-04 | 三菱電機株式会社 | 空気調和装置 |
| JPH06137591A (ja) * | 1992-10-29 | 1994-05-17 | Matsushita Electric Ind Co Ltd | 空気調和機の冷媒分岐箱 |
| JP2002277003A (ja) * | 2001-03-19 | 2002-09-25 | Fujitsu General Ltd | 空気調和機 |
| KR20150072991A (ko) * | 2013-12-20 | 2015-06-30 | 엘지전자 주식회사 | 냉매관 연결부재 |
Non-Patent Citations (1)
| Title |
|---|
| See also references of EP3971494A4 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2023057646A (ja) * | 2021-10-12 | 2023-04-24 | 東尾メック株式会社 | ヘッダー構造体 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP7118258B2 (ja) | 2022-08-15 |
| US20220154949A1 (en) | 2022-05-19 |
| JPWO2020230321A1 (ja) | 2021-11-04 |
| EP3971494A4 (en) | 2022-05-18 |
| EP3971494B1 (en) | 2023-12-27 |
| EP3971494A1 (en) | 2022-03-23 |
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