WO2021214822A1 - 中継機およびこれを備えた空気調和装置 - Google Patents
中継機およびこれを備えた空気調和装置 Download PDFInfo
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- WO2021214822A1 WO2021214822A1 PCT/JP2020/017033 JP2020017033W WO2021214822A1 WO 2021214822 A1 WO2021214822 A1 WO 2021214822A1 JP 2020017033 W JP2020017033 W JP 2020017033W WO 2021214822 A1 WO2021214822 A1 WO 2021214822A1
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- Prior art keywords
- heat medium
- connection port
- pipe connection
- medium pipe
- heat
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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
- F25B41/00—Fluid-circulation arrangements
-
- 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
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/06—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the arrangements for the supply of heat-exchange fluid for the subsequent treatment of primary air in the room units
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/06—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the arrangements for the supply of heat-exchange fluid for the subsequent treatment of primary air in the room units
- F24F3/08—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the arrangements for the supply of heat-exchange fluid for the subsequent treatment of primary air in the room units with separate supply and return lines for hot and cold heat-exchange fluids i.e. so-called "4-conduit" system
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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
-
- 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
- F25B25/00—Machines, plants or systems, using a combination of modes of operation covered by two or more of the groups F25B1/00 - F25B23/00
- F25B25/005—Machines, plants or systems, using a combination of modes of operation covered by two or more of the groups F25B1/00 - F25B23/00 using primary and secondary systems
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/003—Indoor unit with water as a heat sink or heat source
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/006—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
- F25B2313/0233—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units in parallel arrangements
Definitions
- the present disclosure relates to a repeater that exchanges heat between a refrigerant and a heat medium, and an air conditioner equipped with the repeater.
- an air conditioner having an outdoor unit, an indoor unit, and a heat medium conversion device provided between the outdoor unit and the indoor unit is known (see, for example, Patent Document 1).
- the primary heat medium circulates between the outdoor unit and the heat medium conversion device
- the secondary heat medium circulates between the indoor unit and the heat medium conversion device.
- the primary heat medium and the secondary heat medium exchange heat.
- the heat medium piping through which the heat medium is distributed is attached to the side of the housing of the heat medium conversion device. Therefore, when these pipes are extended in the upward direction of the housing of the heat medium conversion device, the pipes need to be extended in the lateral direction of the housing and then directed in the upward direction, which increases the length of the pipes.
- This disclosure is made to solve the above-mentioned problems, and provides a repeater that suppresses the lengthening of connected pipes and an air conditioner equipped with the repeater.
- the repeater according to the present disclosure is a repeater connected between the heat source side unit and the load side unit, and is connected to the heat source side unit via a refrigerant pipe to connect the load side unit and the heat medium pipe.
- the heat medium heat exchanger connected via the heat medium heat exchanger, the housing including the heat medium heat exchanger, the refrigerant pipe into which the refrigerant flows from the heat source side unit into the heat medium heat exchanger, and the heat medium heat exchange.
- a first refrigerant pipe connection port connected to one of the refrigerant pipes and a second refrigerant pipe connected to the other refrigerant pipe.
- connection port Of the connection port, the heat medium pipe in which the heat medium flows into the heat medium heat exchanger from the load side unit, and the heat medium pipe in which the heat medium flows out from the heat medium heat exchanger to the load side unit.
- the pipe connection port, the second refrigerant pipe connection port, the first heat medium pipe connection port, and the second heat medium pipe connection port are provided on the upper surface of the housing and in the direction opposite to the direction of gravity. It is suitable for.
- the air conditioner according to the present disclosure includes a heat source side unit that generates a heat source, a load side unit that uses the heat source generated by the heat source side unit, and the above repeater.
- ports serving as connection portions for the refrigerant pipes and the heat medium pipes connected to the repeater are provided on the upper surface of the housing, and the ports face in the opposite directions of the gravity direction.
- the refrigerant pipe and the heat medium pipe are connected to the pipe connected to the heat medium heat exchanger from above the housing. Therefore, when the heat medium pipe and the refrigerant pipe are extended upward from the upper surface of the housing, it is possible to prevent the pipe length from becoming longer as compared with the configuration in which the refrigerant pipe and the heat medium pipe are attached to the side of the housing. ..
- FIG. 5 is a circuit diagram showing a configuration example of an air conditioner having a repeater according to the first embodiment.
- FIG. 5 is an external front view schematically showing a state inside a heat medium pipe in the repeater shown in FIG. 1.
- FIG. 5 is an external perspective view showing an example of a configuration when a pipe is connected to the repeater according to the second embodiment. It is an external perspective view which shows one configuration example of the repeater which concerns on Embodiment 3.
- FIG. 5 is an external perspective view showing a state in which the drain pan is pulled out in the repeater shown in FIG. 7.
- FIG. 5 is an external perspective view of the repeater shown in FIG. 7 when viewed from another direction. It is an external perspective view which shows one configuration example of the drain pan shown in FIG.
- FIG. 5 is a schematic view showing a horizontal cross section of a drain pan height position in the repeater shown in FIG. 7. It is a layout figure which shows the installation example of the repeater which concerns on Embodiment 3. It is a layout figure which shows another installation example of the repeater which concerns on Embodiment 3.
- FIG. It is a layout figure which shows still another installation example of the repeater which concerns on Embodiment 3.
- FIG. FIG. 5 is an external perspective view showing a configuration example of a drain pan provided in the repeater according to the fourth embodiment.
- FIG. 1 is an external front view showing a configuration example of the repeater according to the first embodiment.
- FIG. 2 is an external perspective view of the repeater shown in FIG.
- the repeater 4 has a rectangular parallelepiped housing 5.
- the housing 5 has an upper surface 5a, a first side surface 5b, a second side surface 5c, a third side surface 5d, a fourth side surface 5e, and a bottom surface 5f.
- the second side surface 5c faces the first side surface 5b.
- the fourth side surface 5e faces the third side surface 5d.
- the first side surface 5b is the front panel of the repeater 4, and the second side surface 5c is the back panel of the repeater 4.
- the first side surface 5b which is a front panel, is configured to be removable from the housing 5 so that the operator can maintain the repeater 4.
- the upper surface 5a of the housing 5 has a first refrigerant pipe connection port 6, a second refrigerant pipe connection port 7, a first heat medium pipe connection port 8a to 8f, and a first.
- the heat medium piping connection ports 9a to 9f of No. 2 are provided.
- the first refrigerant pipe connection port 6, the second refrigerant pipe connection port 7, the first heat medium pipe connection ports 8a to 8f, and the second heat medium pipe connection ports 9a to 9f are opposite in the direction of gravity. It faces in the direction (Z-axis arrow direction).
- an optional refrigerant pipe connection port 11 and an optional heat medium pipe connection port 10 are provided on the upper surface 5a of the housing 5. Each port of the refrigerant pipe connection port 11 and the optional heat medium pipe connection port 10 also faces in the direction opposite to the direction of gravity.
- all of the refrigerant pipe and the heat medium pipe can be connected so as to extend upward (in the direction of the Z-axis arrow) from the upper surface 5a of the housing 5. Even if it is necessary to connect the refrigerant pipe or the heat medium pipe as an option, the refrigerant pipe and the heat medium pipe connected as an option are also connected so as to extend upward from the upper surface 5a of the housing 5. Therefore, it is possible to prevent the pipe from extending in the lateral direction of the housing 5 from any side surface of the first side surface 5b to the fourth side surface 5e.
- a first opening 12 for the power supply line and a second opening 13 for the transmission line are formed on the upper surface 5a.
- Power lines and transmission lines (not shown) are also connected so as to extend from the upper surface 5a of the housing 5. Therefore, it is possible to prevent the cable including the power supply line and the transmission line from extending in the lateral direction of the housing 5 from any side surface of the first side surface 5b to the fourth side surface 5e.
- the piping and the cable extend upward from the upper surface 5a of the housing 5, the operator can easily remove the first side surface 5b when performing maintenance on the repeater 4.
- the first heat medium pipe connection ports 8a to 8f are provided on the first side surface 5b side, and the second heat medium pipe connection is provided on the second side surface 5c side. Ports 9a to 9f are provided. As shown in FIG. 1, the height of the first heat medium pipe connection ports 8a to 8f is lower than the height of the second heat medium pipe connection ports 9a to 9f. That is, the heights of the first heat medium pipe connection ports 8a to 8f and the heights of the second heat medium pipe connection ports 9a to 9f are different from each other.
- FIG. 3 is a schematic view showing a state in which the repeater shown in FIG. 2 is viewed from above.
- the first opening 12 and the second opening 13 shown in FIG. 2 are omitted from the drawings.
- the first heat medium piping connection ports 8a to 8f are spaced apart from each other in parallel with the first side 61, which is the side where the upper surface 5a and the first side surface 5b shown in FIG. 2 are in contact with each other. Have been placed.
- the second heat medium pipe connection ports 9a to 9f are arranged parallel to the first side 61 at intervals.
- FIG. 4 is a circuit diagram showing a configuration example of an air conditioner having a repeater according to the first embodiment.
- the air conditioner 1 includes a heat source side unit 2, load side units 3a to 3f, and a repeater 4 connected between the heat source side unit 2 and the load side units 3a to 3f. Have.
- the configuration example shown in FIG. 4 shows a case where the air conditioner 1 has six load-side units 3a to 3f, but the load-side unit is not limited to six and may be one. ..
- the first embodiment detailed description of the configurations of the heat source side unit 2 and the load side units 3a to 3f will be omitted. Further, in the first embodiment, the details of the flow of the refrigerant between the heat source side unit 2 and the repeater 4 and the flow of the heat medium between the load side units 3a to 3f and the repeater 4 are described in detail. The explanation is omitted.
- the heat source side unit 2 and the repeater 4 are connected by the refrigerant pipes 51 and 52.
- Refrigerant circulates between the heat source side unit 2 and the repeater 4 via the refrigerant pipes 51 and 52.
- the load side unit 3a and the repeater 4 are connected by heat medium pipes 32a and 33a.
- a heat medium such as water and brine circulates between the load side unit 3a and the repeater 4 via the heat medium pipes 32a and 33a.
- the load side unit 3b and the repeater 4 are connected by heat medium pipes 32b and 33b.
- the heat medium circulates between the load side unit 3b and the repeater 4 via the heat medium pipes 32b and 33b.
- the load side unit 3c and the repeater 4 are connected by heat medium pipes 32c and 33c.
- the heat medium circulates between the load side unit 3c and the repeater 4 via the heat medium pipes 32c and 33c.
- the load side unit 3d and the repeater 4 are connected by heat medium pipes 32d and 33d.
- the heat medium circulates between the load side unit 3d and the repeater 4 via the heat medium pipes 32d and 33d.
- the load side unit 3e and the repeater 4 are connected by heat medium pipes 32e and 33e.
- the heat medium circulates between the load side unit 3e and the repeater 4 via the heat medium pipes 32e and 33e.
- the load side unit 3f and the repeater 4 are connected by heat medium pipes 32f and 33f.
- the heat medium circulates between the load side unit 3f and the repeater 4 via the heat medium pipes 32f and 33f.
- the heat source side unit 2 includes a compressor 21, a heat source side heat exchanger 22, a four-way valve 23, an accumulator 24, an expansion valve 25, and a controller 20 that controls the air conditioner 1.
- the compressor 21, the heat source side heat exchanger 22, the four-way valve 23, the accumulator 24, and the expansion valve 25 are connected via a refrigerant pipe 26.
- the load side unit 3a has a load side heat exchanger 31a.
- the load side unit 3b has a load side heat exchanger 31b.
- the load side unit 3c has a load side heat exchanger 31c.
- the load side unit 3d has a load side heat exchanger 31d.
- the load side unit 3e has a load side heat exchanger 31e.
- the load side unit 3f has a load side heat exchanger 31f.
- the repeater 4 includes a pump 41, a heat medium heat exchanger 42, and flow rate adjusting valves 44a to 44f.
- the heat medium heat exchanger 42, the pump 41, and the flow rate adjusting valves 44a to 44f are connected via the heat medium pipe 46.
- one refrigerant pipe connection port is connected to the expansion valve 25 of the heat source side unit 2 via the refrigerant pipes 45 and 51, and the other refrigerant pipe connection port is It is connected to the four-way valve 23 of the heat source side unit 2 via the refrigerant pipes 45 and 52.
- one heat medium pipe connection port is connected to the flow control valves 44a to 44f via the heat medium pipe 46 that branches into six, and the other heat.
- the medium pipe connection port is connected to the heat medium discharge port side of the pump 41 via the heat medium pipe 46.
- the flow rate adjusting valve 44a is connected to the load side heat exchanger 31a via the heat medium pipe 32a.
- the flow rate adjusting valve 44b is connected to the load side heat exchanger 31b via the heat medium pipe 32b.
- the flow rate adjusting valve 44c is connected to the load side heat exchanger 31c via the heat medium pipe 32c.
- the flow rate adjusting valve 44d is connected to the load side heat exchanger 31d via the heat medium pipe 32d.
- the flow rate adjusting valve 44e is connected to the load side heat exchanger 31e via the heat medium pipe 32e.
- the flow rate adjusting valve 44f is connected to the load side heat exchanger 31f via the heat medium pipe 32f.
- the heat medium pipe 46 on the heat medium suction port side of the pump 41 is branched into six and connected to the heat medium pipes 33a to 33f.
- connection configuration of the piping between the heat source side unit 2 and the load side units 3a to 3f shown in FIG. 4 and the repeater 4 shown in FIG. 2 will be described.
- one of the refrigerant pipes is connected to the first refrigerant pipe connection port 6 shown in FIG. 2, and the other refrigerant pipe is connected to the second refrigerant pipe connection port 7. Will be done.
- the first heat medium pipe connection port 8a shown in FIG. 2 is connected to one of the heat medium pipes, and the second heat medium pipe is connected to the other heat medium pipe.
- the connection port 9a is connected.
- the first heat medium pipe connection port 8b shown in FIG. 2 is connected to one of the heat medium pipes, and the second heat medium pipe is connected to the other heat medium pipe.
- the connection port 9b is connected.
- the first heat medium pipe connection port 8c shown in FIG. 2 is connected to one of the heat medium pipes, and the second heat medium pipe is connected to the other heat medium pipe.
- the connection port 9c is connected.
- the first heat medium pipe connection port 8d shown in FIG. 2 is connected to one of the heat medium pipes, and the second heat medium pipe is connected to the other heat medium pipe.
- the connection port 9d is connected.
- the first heat medium pipe connection port 8e shown in FIG. 2 is connected to one of the heat medium pipes, and the second heat medium pipe is connected to the other heat medium pipe.
- the connection port 9e is connected.
- the first heat medium pipe connection port 8f shown in FIG. 2 is connected to one of the heat medium pipes, and the second heat medium pipe is connected to the other heat medium pipe.
- the connection port 9f is connected.
- Ports for connecting the refrigerant pipe and the heat medium pipe are concentrated on the upper surface 5a instead of the first side surface 5b to the fourth side surface 5e of the housing 5. Further, as shown in FIG. 3, on the upper surface 5a, in the direction of the X-axis arrow from the apex 62, the heat medium pipes are formed like the first heat medium pipe connection port 8a and the second heat medium pipe connection port 9a. The first side surface 5b side and the second side surface 5c side are alternately arranged. The gap between the plurality of adjacent connection ports is wide, which makes it easier for the operator to connect the heat medium pipes to the repeater 4. Further, since the heights of the first heat medium pipe connection ports 8a to 8f and the heights of the second heat medium pipe connection ports 9a to 9f are different, the workability of connecting the heat medium pipe to the repeater 4 is improved.
- the time of trial run after the air conditioner 1 of the first embodiment is installed will be described.
- the heat medium pipes 32a to 32f, 33a to 33f, and 46 are filled with the heat medium.
- the operator needs to bleed air from the heat medium pipes 32a to 32f, 33a to 33f, and 46. This is because if air remains in the heat medium, not only the heat exchange efficiency is lowered, but also a failure of the pump 41 is caused.
- the repeater 4 of the first embodiment makes it easier to remove air from the heat medium filled in the heat medium pipe 46 as compared with the horizontal pipe structure in which the heat medium pipe is attached in the lateral direction of the housing.
- FIG. 5 is an external front view schematically showing a state inside the heat medium pipe in the repeater shown in FIG.
- FIG. 5 schematically shows a heat medium pipe 46 connected to each of the second heat medium pipe connection ports 9b and 9d.
- the air 101 when the heat medium is water, the air 101 has a lower density than water. Therefore, when the heat medium pipe 46 of the repeater 4 is filled with water, the air 101 becomes the heat medium pipe as shown in FIG. It moves in the direction opposite to the direction of gravity (Z-axis arrow direction) in 46. It can be seen that if an air vent valve is provided above each of the second heat medium pipe connection ports 9b and 9d, the air 101 can easily escape from the heat medium pipe 46.
- the repeater 4 of the first embodiment has a first refrigerant pipe connection port 6, a second refrigerant pipe connection port 7, a first heat medium pipe connection port 8a to 8f, and a second heat medium pipe connection port 9a.
- ⁇ 9f is provided on the upper surface 5a of the housing 5.
- the first refrigerant pipe connection port 6, the second refrigerant pipe connection port 7, the first heat medium pipe connection ports 8a to 8f, and the second heat medium pipe connection ports 9a to 9f are in opposite directions of gravity. Suitable for.
- ports serving as connection portions of the refrigerant pipes and the heat medium pipes connected to the repeater 4 are provided on the upper surface 5a of the housing 5, and the ports are in the opposite directions of the gravity direction. Suitable for. Therefore, the refrigerant pipe and the heat medium pipe are connected to the pipe connected to the heat medium heat exchanger 42 from above the housing 5.
- the pipe length becomes longer as compared with the conventional repeater in which the refrigerant pipe and the heat medium pipe are attached to the side of the housing. Can be suppressed.
- a pipe such as a refrigerant pipe and a cable such as a power supply line are not connected to the first side surface 5b on the front side of the housing 5. Therefore, the operator can not only use the front side of the housing 5 as a maintenance space for the repeater 4, but also easily remove the first side surface 5b, which improves the maintenance work efficiency.
- the first heat medium pipe connection ports 8a to 8f and the second heat medium pipe connection ports 9a to 9f are provided on the upper surface 5a of the housing 5, and each of them.
- the port points in the opposite direction of gravity. Therefore, as described with reference to FIG. 5, when the air 101 is removed from the heat medium filled in the heat medium pipe such as the heat medium pipe 46, the air 101 easily moves upward in the housing 5. As a result, as compared with the horizontal piping structure, air can be more easily evacuated from the heat medium piping, and the operator can perform the air bleeding operation in a short time.
- Embodiment 2 is a case where the heat medium pipe is connected to the repeater 4 described in the first embodiment.
- the same components as those described in the first embodiment are designated by the same reference numerals, and detailed description thereof will be omitted.
- FIG. 6 is an external perspective view showing an example of a configuration when a pipe is connected to the repeater according to the second embodiment.
- the heat medium pipe 32a shown in FIG. 4 is connected to the first heat medium pipe connection port 8a shown in FIG.
- the heat medium pipe 32b shown in FIG. 4 is connected to the first heat medium pipe connection port 8b shown in FIG.
- the heat medium pipe 32c shown in FIG. 4 is connected to the first heat medium pipe connection port 8c shown in FIG.
- the heat medium pipe 32d shown in FIG. 4 is connected to the first heat medium pipe connection port 8d shown in FIG.
- the heat medium pipe 32e shown in FIG. 4 is connected to the first heat medium pipe connection port 8e shown in FIG.
- the heat medium pipe 32f shown in FIG. 4 is connected to the first heat medium pipe connection port 8f shown in FIG.
- FIG. 6 shows a case where the heat medium pipe 35 is connected to the heat medium pipe connection port 10 shown in FIG. 2, but when the heat medium pipe connection port 10 is not used, the heat medium pipe 35 is provided. It does not have to be.
- the heat medium pipe 33a shown in FIG. 4 is connected to the second heat medium pipe connection port 9a shown in FIG.
- the heat medium pipe 33b shown in FIG. 4 is connected to the second heat medium pipe connection port 9b shown in FIG.
- the heat medium pipe 33c shown in FIG. 4 is connected to the second heat medium pipe connection port 9c shown in FIG.
- the heat medium pipe 33d shown in FIG. 4 is connected to the second heat medium pipe connection port 9d shown in FIG.
- the heat medium pipe 33e shown in FIG. 4 is connected to the second heat medium pipe connection port 9e shown in FIG.
- the heat medium pipe 33f shown in FIG. 4 is connected to the second heat medium pipe connection port 9f shown in FIG.
- the heat medium pipe 33a is provided with an air vent valve 14a at a position located above the second heat medium pipe connection port 9a shown in FIG.
- the heat medium pipe 33b is provided with an air vent valve 14b at a position located above the second heat medium pipe connection port 9b shown in FIG.
- the heat medium pipe 33c is provided with an air vent valve 14c at a position located above the second heat medium pipe connection port 9c shown in FIG.
- the heat medium pipe 33d is provided with an air vent valve 14d at a position located above the second heat medium pipe connection port 9d shown in FIG.
- the heat medium pipe 33e is provided with an air vent valve 14e at a position located above the second heat medium pipe connection port 9e shown in FIG.
- the heat medium pipe 33f is provided with an air vent valve 14f at a position located above the second heat medium pipe connection port 9f shown in FIG.
- on-off valves 15 are provided in each of the second heat medium piping connection ports 9a to 9f shown in FIG.
- An on-off valve 15 is provided in each of the first heat medium piping connection ports 8a to 8f shown in FIG.
- the heights of the second heat medium pipe connection ports 9a to 9f and the heights of the first heat medium pipe connection ports 8a to 8f are different.
- the second heat medium pipe connection ports 9a to 9f are higher than the first heat medium pipe connection ports 8a to 8f, and are staggered. Therefore, a gap is formed between the heat medium pipes 33a to 33f and the heat medium pipes 32a to 32f, and it is easy to operate the on-off valve 15 of each of the second heat medium pipe connection ports 9a to 9f.
- an air vent valve may be provided in each of the heat medium pipes 32a to 32f. Since the heat medium pipes 33a to 33f are located higher than the heat medium pipes 32a to 32f, even if the air vent valve (not shown) is provided on the heat medium pipes 32a to 32f, the air vent valve is the heat medium pipe. Does not interfere with 33a to 33f.
- the first opening 12 and the second opening 13 are formed on the upper surface 5a of the housing 5.
- the power supply line 71 extends from the first opening 12 and is connected to a power supply (not shown).
- a transmission line 72 extends from the second opening 13 and is connected to the controller 20 shown in FIG.
- the transmission line 72 serves to transmit a control signal output from the controller 20.
- the power supply line 71 and the transmission line 72 are arranged along the heat medium pipe 32a and are fastened to the heat medium pipe 32a with a binding band 73.
- the power supply line 71 is connected to the pump 41 and the flow rate adjusting valves 44a to 44f shown in FIG. 4 in the housing 5.
- the transmission line 72 is connected to the pump 41 and the flow rate adjusting valves 44a to 44f shown in FIG. 4 in the housing 5.
- the first heat medium pipe connection ports 8a to 8f are provided on the first side surface 5b side, and the second heat medium pipe connection ports 9a to 9a to the second side surface 5c side. 9f is provided.
- the height of the first heat medium pipe connection ports 8a to 8f is lower than the height of the second heat medium pipe connection ports 9a to 9f. Since the height of the second heat medium pipe connection ports 9a to 9f on the back side is higher than the height of the first heat medium pipe connection ports 8a to 8f on the front side of the housing 5, the operator can use the second heat medium pipe connection port 9a to 9f. It is easy to operate the on-off valve 15 attached to the heat medium piping connection ports 9a to 9f.
- the air vent valves 14a to 14f above the second heat medium pipe connection ports 9a to 9f can be easily attached, and it is not necessary to provide the hanging tool necessary for the horizontal piping structure, so that the workability and serviceability are improved.
- the repeater 4 has a power supply line 71 having a first opening 12 formed on the upper surface 5a of the housing 5 and extending from the inside of the housing 5 through the first opening 12. You may be doing it. Further, the repeater 4 may have a transmission line 72 in which a second opening 13 is formed in the upper surface 5a of the housing 5 and extends from the inside of the housing 5 through the second opening 13.
- the power supply line 71 and the transmission line 72 connected to the inside of the repeater 4 can be taken out from the upper surface 5a of the housing 5. .. Therefore, the power supply line 71 and the transmission line 72 can be wired along the pipes such as the heat medium pipe 32a extending to the ceiling.
- the piping such as the refrigerant piping and the heat medium piping and the cable including the power supply line 71 and the transmission line 72 can be bundled together and installed on the upper surface 5a of the housing 5. Therefore, since the cable is not attached to the front side, the operator does not cut the cable when removing the front panel for maintenance of the repeater 4 as compared with the case where the cable is attached to the front of the housing. You don't have to be careful. Further, since the cable is not attached to the front side of the housing 5, the operator can use the front side of the housing 5 as a maintenance space. As a result, the work efficiency of maintenance is improved.
- Embodiment 3 is a case where the repeater 4 described in the first embodiment has a drain pan.
- the same components as those described in the first and second embodiments are designated by the same reference numerals, and detailed description thereof will be omitted.
- FIG. 7 is an external perspective view showing a configuration example of the repeater according to the third embodiment.
- FIG. 8 is an external perspective view showing a state in which the drain pan is pulled out in the repeater shown in FIG. 7.
- the repeater 4 has a drain pan 18.
- FIG. 8 shows a state in which the drain pan 18 is pulled out from the housing 5, and
- FIG. 7 shows a state in which the drain pan 18 is housed in the housing 5.
- the drain pan 18 shown in FIG. 8 is arranged on the bottom surface 5f.
- the drain pan 18 serves to store condensed water when the surface of the heat medium heat exchanger 42 shown in FIG. 4 condenses.
- the drain pan 18 has a first drain port 17a and a second drain port 17b.
- the first drain socket 16a is formed on the first side surface 5b at the position corresponding to the first drain port 17a, and the position corresponding to the second drain port 17b.
- a second drain socket 16b is formed on the third side surface 5d of the above.
- the first side surface 5b has a drawer panel 50 which is a separable portion.
- FIG. 9 is an external perspective view of the repeater shown in FIG. 7 when viewed from another direction.
- a third drain socket 16c is formed on the second side surface 5c and a fourth drain socket 16c is formed on the fourth side surface 5e at a position corresponding to the height of the drain pan 18 housed in the housing 5.
- the drain socket 16d is formed.
- FIG. 10 is an external perspective view showing a configuration example of the drain pan shown in FIG.
- the drain pan 18 has a rectangular plate 81 corresponding to the shape of the bottom surface 5f, and four edges 82a to 82d provided around the plate 81.
- the four edges 82a-82d prevent the condensed water from leaking from the plate 81.
- a first drain port 17a is formed at a position of a first distance x1 from a second side 64 where the two edges 82a and 82b meet at one of the two adjacent edges 82a and 82b. ..
- FIG. 9 shows a drain pan 18 when the edge 82c is inserted into the housing 5 so as to be on the second side surface 5c side of the housing 5 shown in FIG.
- FIG. 11 is a schematic view showing a horizontal cross section of the height position of the drain pan in the repeater shown in FIG. 7.
- the side where the first side surface 5b and the third side surface 5d are in contact with each other is defined as the third side 65.
- the side where the second side surface 5c and the fourth side surface 5e are in contact with each other is defined as the fourth side 66.
- the rectangle shown in FIG. 11 corresponds to the shape of the bottom surface 5f, and the center of gravity 67 of the rectangle shown in FIG. 11 overlaps with the center of gravity of the bottom surface 5f on the Z axis.
- a first drain socket 16a is formed on the first side surface 5b at a position of a first distance x1 from the third side 65.
- a second drain socket 16b is formed at a position at a position of a second distance y1 from the third side 65.
- a third drain socket 16c is formed at a point-symmetrical position of the first drain socket 16a with the center of gravity 67 as the center of symmetry. That is, the third drain socket 16c is formed at a position of the first distance x1 from the fourth side 66 on the second side surface 5c.
- the fourth drain socket 16d is formed at a point-symmetrical position of the second drain socket 16b with the center of gravity 67 as the center of symmetry.
- the fourth drain socket 16d is formed on the fourth side surface 5e at a position at a second distance y1 from the fourth side 66.
- the drain pan 18 can be inserted into the housing 5 so that the edge 82c is on the second side surface 5c side of the housing 5, and the edge 82a is the second side surface of the housing 5.
- the drain pan 18 can also be inserted into the housing 5 so as to be on the 5c side.
- either of the first drain socket 16a and the second drain socket 16b is drained.
- the drain pan 18 is housed in the housing 5 so that the edge 82a is on the second side surface 5c side of the housing 5, either of the third drain socket 16c and the fourth drain socket 16d is used.
- FIG. 12 is a layout diagram showing an installation example of the repeater according to the third embodiment.
- FIG. 12 shows a case where the second side surface 5c, the third side surface 5d and the fourth side surface 5e are surrounded by a wall, and the first side surface 5b is open.
- the operator stores the drain pan 18 in the housing 5 as shown in FIG.
- the operator may connect the drain hose 55 to the first drain port 17a and the first drain socket 16a.
- FIG. 13 is a layout diagram showing another installation example of the repeater according to the third embodiment.
- FIG. 13 shows a case where the second side surface 5c and the fourth side surface 5e are surrounded by a wall, and the first side surface 5b and the third side surface 5d are open.
- the operator stores the drain pan 18 in the housing 5 as shown in FIG.
- the operator connects the drain hose 55 to the second drain port 17b and the second drain socket 16b.
- the front of the first side surface 5b of the housing 5 can be left open for maintenance work.
- FIG. 14 is a layout diagram showing still another installation example of the repeater according to the third embodiment.
- FIG. 14 shows a case where the second side surface 5c and the third side surface 5d are surrounded by a wall, and the first side surface 5b and the fourth side surface 5e are open.
- the operator stores the drain pan 18 in the housing 5 so that the edge 82a shown in FIG. 10 of the drain pan 18 is on the second side surface 5c side.
- the operator connects the drain hose 55 to the second drain port 17b and the fourth drain socket 16d.
- the front of the first side surface 5b of the housing 5 can be left open for maintenance work.
- the operator can select the attachment port of the drain hose 55 according to the layout of the wall and the maintenance area.
- the repeater 4 of the third embodiment has a configuration in which the drain pan 18 for storing the condensed water can be slid and taken out from the housing 5. Therefore, it is easy to clean the drain pan 18.
- the drain hose 55 attachment ports are provided on each side surface of the first side surface 5b to the fourth side surface 5e of the repeater 4, and the drain pan 18 is provided with two drain ports. There is. When the drain pan 18 is stored in the housing 5, the operator can select the insertion direction of the drain pan 18 into the housing 5 from two directions, from the four side surfaces of the first side surface 5b to the fourth side surface 5e. The mounting surface of the drain hose 55 can be selected.
- the mounting surface of the drain hose 55 can be selected from the four side surfaces of the first side surface 5b to the fourth side surface 5e, even if the repeater 4 is installed near the wall, of the four side surfaces. If there is only one open side surface, the drain hose 55 can be attached to the repeater 4.
- drain pan 18 is provided with two drain ports, one can be used for normal drainage and the other can be used for emergency use.
- Embodiment 4 the drain pan configuration is different in the repeater 4 described in the third embodiment.
- the same components as those described in the first to third embodiments are designated by the same reference numerals, and detailed description thereof will be omitted.
- FIG. 15 is an external perspective view showing a configuration example of a drain pan provided in the repeater according to the fourth embodiment.
- the drain pan 18a has a plate 81 and four edges 82a to 82d provided around the plate 81.
- a first drain port 17a is formed at a position of a first distance x1 from the second side 64 where the two edges 82a and 82b meet.
- a second drain port 17b is formed at a position of a second distance y1 from the second side 64 on the other edge 82b.
- the convex portion 56 is a quadrangular pyramid whose bottom surface is formed by two sides having a first distance x1 and two sides having a second distance y1. Since the shape of the convex portion 56 is a quadrangular pyramid, the condensed water around the corner portion easily flows in the direction of the first drain port 17a and the second drain port 17b along the slope of the quadrangular pyramid.
- the convex portion 56 is provided at the corner portion where the second side 64 is formed, it is possible to prevent the water accumulated in the plate 81 from staying at the corner portion. Further, even if one of the first drain port 17a and the second drain port 17b is closed, the water collected in the plate 81 is the other drain that is open along the convex portion 56. It is discharged from the mouth.
- the repeater 4 of the fourth embodiment it is a corner portion on the plate 81 of the drain pan 18a on which the second side 64 is formed, and is between the first drain port 17a and the second drain port 17b.
- a convex portion 56 is provided on the surface. Therefore, even if one of the two drain ports is closed, the water collected in the plate 81 is discharged to the outside from the other open drain port along the convex portion 56. As a result, dew condensation water does not stay at the corners of the drain pan 18a. Since water does not stay at the corners of the drain pan 18a, the generation of foreign substances such as dust and slime that cause clogging of the drain port is suppressed. Further, since the drain pan 18a has a structure in which water does not easily collect, rust generation and water leakage can be reduced.
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Abstract
Description
本実施の形態1の中継機の構成を説明する。図1は、実施の形態1に係る中継機の一構成例を示す外観正面図である。図2は、図1に示した中継機の外観斜視図である。図1および図2に示すように、中継機4は、直方体形状の筐体5を有する。筐体5は、上面5aと、第1の側面5bと、第2の側面5cと、第3の側面5dと、第4の側面5eと、底面5fとを有する。第2の側面5cは第1の側面5bに対向する。第4の側面5eは第3の側面5dに対向する。本実施の形態1においては、第1の側面5bを中継機4の正面パネルとし、第2の側面5cを中継機4の背面パネルとする。中継機4を作業者がメンテナンスできるように、正面パネルである第1の側面5bは、筐体5から外せる構成である。
本実施の形態2は、実施の形態1で説明した中継機4に熱媒体配管が接続された場合である。本実施の形態2においては、実施の形態1で説明した構成と同一の構成に同一の符号を付し、その詳細な説明を省略する。
実施の形態3は、実施の形態1で説明した中継機4がドレンパンを有する場合である。本実施の形態3においては、実施の形態1および2で説明した構成と同一の構成に同一の符号を付し、その詳細な説明を省略する。
本実施の形態4は、実施の形態3で説明した中継機4において、ドレンパンの構成が異なる構成である。本実施の形態4においては、実施の形態1~3で説明した構成と同一の構成に同一の符号を付し、その詳細な説明を省略する。
Claims (10)
- 熱源側ユニットと負荷側ユニットとの間に接続される中継機であって、
前記熱源側ユニットと冷媒配管を介して接続され、前記負荷側ユニットと熱媒体配管を介して接続される熱媒体熱交換器と、
前記熱媒体熱交換器を内蔵する筐体と、
前記熱源側ユニットから前記熱媒体熱交換器に冷媒が流入する前記冷媒配管および前記熱媒体熱交換器から前記熱源側ユニットに前記冷媒が流出する前記冷媒配管のうち、一方の前記冷媒配管と接続される第1の冷媒配管接続ポート、および他方の前記冷媒配管と接続される第2の冷媒配管接続ポートと、
前記負荷側ユニットから前記熱媒体熱交換器に熱媒体が流入する前記熱媒体配管および前記熱媒体熱交換器から前記負荷側ユニットに前記熱媒体が流出する前記熱媒体配管のうち、一方の前記熱媒体配管と接続される第1の熱媒体配管接続ポート、および他方の前記熱媒体配管と接続される第2の熱媒体配管接続ポートと、を有し、
前記第1の冷媒配管接続ポート、前記第2の冷媒配管接続ポート、前記第1の熱媒体配管接続ポートおよび前記第2の熱媒体配管接続ポートは、前記筐体の上面に設けられ、かつ、重力方向の反対方向に向いている、
中継機。 - 前記筐体は、前記上面と、第1の側面と、前記第1の側面に対向する第2の側面と、前記第1の側面および前記第2の側面と隣り合う第3の側面と、第3の側面に対向する第4の側面と、前記上面に対向する底面とを有する直方体形状であり、
前記第1の側面側に、前記第1の熱媒体配管接続ポートが設けられ、
前記第2の側面側に、前記第2の熱媒体配管接続ポートが設けられ、
前記第1の熱媒体配管接続ポートの高さが、前記第2の熱媒体配管接続ポートの高さよりも低い、
請求項1に記載の中継機。 - 前記第1の熱媒体配管接続ポートおよび前記第2の熱媒体配管接続ポートはそれぞれ複数設けられ、
前記複数の第1の熱媒体配管接続ポートが前記上面と前記第1の側面とが接する第1の辺に平行に間隔を空けて配置され、
前記複数の第2の熱媒体配管接続ポートが前記第1の辺に平行に間隔を空けて配置され、
前記複数の第1の熱媒体配管接続ポートの配置に対して、前記複数の第2の熱媒体配管接続ポートの配置が前記第1の辺に沿った方向にシフトしている、
請求項2に記載の中継機。 - 前記複数の第2の熱媒体配管接続ポートのそれぞれの上部に空気抜き弁が設けられ、
前記複数の第2の熱媒体配管接続ポートのそれぞれの前記第1の側面側に開閉弁が設けられている、
請求項3に記載の中継機。 - 前記底面の上にドレンパンが設けられ、
前記ドレンパンは、
前記底面の形状に対応する矩形状のプレートと、
前記プレートの周囲に設けられた4つの縁と、を有し、
前記4つの縁のうち、隣り合う2つの縁の一方の縁に、前記隣り合う2つの縁が接する第2の辺から第1の距離の位置に第1のドレン口が形成され、
前記隣り合う2つの縁の他方の縁に、前記第2の辺から第2の距離の位置に第2のドレン口が形成され、
前記筐体は、
前記第1の側面において、前記ドレンパンが配置される高さであって、前記第1の側面と前記第3の側面とが接する第3の辺から前記第1の距離に第1のドレンソケットが形成され、
前記第3の側面において、前記ドレンパンが配置される高さであって、前記第3の辺から前記第2の距離に第2のドレンソケットが形成され、
前記第2の側面において、前記底面の重心を対称の中心として前記第1のドレンソケットの点対称の位置に第3のドレンソケットが形成され、
前記第4の側面において、前記底面の重心を対称の中心として前記第2のドレンソケットの点対称の位置に第4のドレンソケットが形成されている、
請求項2~4のいずれか1項に記載の中継機。 - 前記プレート上の前記第2の辺が形成される角部であって前記第1のドレン口と前記第2のドレン口との間に、凸部が設けられている、
請求項5に記載の中継機。 - 前記凸部は、それぞれの長さが前記第1の距離である2辺と、それぞれの長さが前記2の距離である2辺とによって底面を形成する四角錐である、
請求項6に記載の中継機。 - 前記筐体の前記上面に第1の開口が形成され、前記第1の開口を介して前記筐体の内部から延びる電源線を有する、
請求項1~7のいずれか1項に記載の中継機。 - 前記筐体の前記上面に第2の開口が形成され、前記第2の開口を介して前記筐体の内部から延びる伝送線を有する、
請求項1~8のいずれか1項に記載の中継機。 - 熱源を生成する熱源側ユニットと、
前記熱源側ユニットが生成する前記熱源を利用する負荷側ユニットと、
請求項1~9のいずれか1項に記載の中継機と、
を有する空気調和装置。
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US17/798,245 US12031758B2 (en) | 2020-04-20 | 2020-04-20 | Relay unit and air-conditioning apparatus including the same |
| PCT/JP2020/017033 WO2021214822A1 (ja) | 2020-04-20 | 2020-04-20 | 中継機およびこれを備えた空気調和装置 |
| JP2022516478A JP7362909B2 (ja) | 2020-04-20 | 2020-04-20 | 中継機およびこれを備えた空気調和装置 |
| CN202080099793.0A CN115398163B (zh) | 2020-04-20 | 2020-04-20 | 中继机以及具备中继机的空调装置 |
| EP20932739.4A EP4141354B1 (en) | 2020-04-20 | 2020-04-20 | Relay device and air conditioner equipped with same |
| JP2023172727A JP7531676B2 (ja) | 2020-04-20 | 2023-10-04 | 中継機およびこれを備えた空気調和装置 |
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| PCT/JP2020/017033 WO2021214822A1 (ja) | 2020-04-20 | 2020-04-20 | 中継機およびこれを備えた空気調和装置 |
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- 2020-04-20 CN CN202080099793.0A patent/CN115398163B/zh active Active
- 2020-04-20 US US17/798,245 patent/US12031758B2/en active Active
- 2020-04-20 JP JP2022516478A patent/JP7362909B2/ja active Active
- 2020-04-20 EP EP20932739.4A patent/EP4141354B1/en active Active
- 2020-04-20 WO PCT/JP2020/017033 patent/WO2021214822A1/ja not_active Ceased
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| JP2000104940A (ja) * | 1998-09-28 | 2000-04-11 | Kyushu Electric Power Co Inc | ヒートポンプ式給湯システム |
| JP2002107028A (ja) * | 2000-09-29 | 2002-04-10 | Sanyo Electric Co Ltd | 冷却設備用氷蓄熱システム |
| WO2007004460A1 (ja) * | 2005-06-30 | 2007-01-11 | Toshiba Carrier Corporation | ヒートポンプ式給湯装置 |
| JP2010107162A (ja) * | 2008-10-31 | 2010-05-13 | Daikin Ind Ltd | ヒートポンプ式給湯装置 |
| WO2010119555A1 (ja) * | 2009-04-17 | 2010-10-21 | 三菱電機株式会社 | 熱媒体変換機及び空気調和装置 |
| JP2010281552A (ja) * | 2009-06-08 | 2010-12-16 | Mayekawa Mfg Co Ltd | 給湯装置及びその運転方法 |
| WO2014192139A1 (ja) | 2013-05-31 | 2014-12-04 | 三菱電機株式会社 | 熱媒体変換装置、及び、この熱媒体変換装置を備えた空気調和装置 |
| CN203702533U (zh) * | 2014-01-20 | 2014-07-09 | 张前进 | 一种用于泵站的水冷却系统 |
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| WO2019124409A1 (ja) * | 2017-12-18 | 2019-06-27 | ダイキン工業株式会社 | 冷凍サイクル装置 |
| JP2020051735A (ja) * | 2018-09-28 | 2020-04-02 | ダイキン工業株式会社 | 熱交換ユニット |
Also Published As
| Publication number | Publication date |
|---|---|
| US20230145285A1 (en) | 2023-05-11 |
| JP7362909B2 (ja) | 2023-10-17 |
| EP4141354A4 (en) | 2023-06-14 |
| CN115398163A (zh) | 2022-11-25 |
| JP2023168542A (ja) | 2023-11-24 |
| EP4141354A1 (en) | 2023-03-01 |
| JP7531676B2 (ja) | 2024-08-09 |
| US12031758B2 (en) | 2024-07-09 |
| EP4141354B1 (en) | 2025-12-17 |
| CN115398163B (zh) | 2023-11-10 |
| JPWO2021214822A1 (ja) | 2021-10-28 |
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