CN106286891B - Combined electromagnetic switching valve and its air-conditioning system - Google Patents
Combined electromagnetic switching valve and its air-conditioning system Download PDFInfo
- Publication number
- CN106286891B CN106286891B CN201510252452.3A CN201510252452A CN106286891B CN 106286891 B CN106286891 B CN 106286891B CN 201510252452 A CN201510252452 A CN 201510252452A CN 106286891 B CN106286891 B CN 106286891B
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- Prior art keywords
- adapter tube
- sliding block
- valve
- piston component
- intermediate pressure
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
- F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
- F16K11/065—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0603—Multiple-way valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
- F16K31/124—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston servo actuated
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Multiple-Way Valves (AREA)
- Fluid-Driven Valves (AREA)
Abstract
The invention discloses a kind of combined electromagnetic switching valve and its air-conditioning systems, combined electromagnetic switching valve includes valve body, first piston component and second piston component are respectively equipped at body cavity both ends, First pressure chamber is formed between the first piston component and corresponding valve body end cap, second pressure chamber is formed between the second piston component and corresponding valve body end cap, intermediate pressure cavity is formed between first piston component and second piston component, it is intracavitary equipped with sliding block in intermediate pressure, the sliding block is connect with first piston component and second piston component, the sliding block includes the first sliding block and the second sliding block, the intermediate pressure cavity is connected with E adapter tube, S adapter tube, C adapter tube, D connection, X adapter tube, Y adapter tube, Z adapter tube.The present invention is switched by the driving of pilot valve, is automatically switched refrigerant flow direction using the height pressure difference in air-conditioning system, is realized the conversion of air-conditioning system operating status, without being additionally provided power source, it not will cause big drag losses, therefore saved cost, reduce energy consumption.
Description
Technical field
The present invention relates to air-conditioning systems.
Background technique
At present energy-saving air conditioning product freeze when, need by refrigeration system pipeline carry out functional form heat exchange (such as recuperation of heat,
Electronic control module cooling, economizer etc.), and heat and do not need (easy condensation etc.), it is therefore desirable to shunting is switched over to runner.Now
Solve the problems, such as this, first is that connect a check valve on auxiliary cooler, and the reversed entrance of check valve and auxiliary cooler simultaneously
Join the outlet of capillary access outdoor heat exchanger, refrigerant enters check valve and is obstructed just through the entrance of thus capillary when heating in this way
Outdoor heat exchanger outlet, but this way can generate flow resistance, cause system pressure drop excessive, and have dirty risk stifled, ice is stifled；Second is that simultaneously
Join two solenoid valves, this way cost is excessively high, and needs to change automatically controlled scheme.
Summary of the invention
The technical problem to be solved by the invention is to provide a kind of combined electromagnetic switching valve and its air-conditioning systems, formerly
The driving of pilot valve is but changed, and using the flow direction in air-conditioning system between each head piece of height pressure differential switching valve, guarantees air-conditioning system
Effective operation of system.
In order to solve the above technical problems, the present invention adopts the following technical scheme: combined electromagnetic switching valve, including valve body,
First piston component and second piston component are respectively equipped at body cavity both ends, the first piston component and corresponding valve body
First pressure chamber is formed between end cap, and second pressure chamber is formed between the second piston component and corresponding valve body end cap,
Intermediate pressure cavity is formed between first piston component and second piston component, it is intracavitary equipped with sliding block, the sliding block in intermediate pressure
It is connect with first piston component and second piston component, the sliding block includes the first sliding block and the second sliding block, the intermediate pressure
Chamber is connected with E adapter tube, S adapter tube, C adapter tube, D connection, X adapter tube, Y adapter tube, Z adapter tube,
When refrigeration, D connection and C adapter tube are connected, and E adapter tube is taken over S to be connected by the first sliding block, and Z takes over by the second sliding block
Valve plate closing, X adapter tube is connected with Y adapter tube by the second sliding block；
When heating, D connection and E adapter tube are connected, and C adapter tube is taken over S to be connected by the first sliding block, and X takes over by the second sliding block
Valve plate closing, Y adapter tube is connected with Z adapter tube by the second sliding block.
Preferably, the interface that the E adapter tube, S adapter tube, C adapter tube access intermediate pressure cavity is arranged side by side in order, the E
The interface that adapter tube, S adapter tube, C adapter tube access intermediate pressure cavity is opened and closed by the first sliding block, the X adapter tube, Y adapter tube, Z adapter tube access
The interface of intermediate pressure cavity is arranged side by side in order, X adapter tube, Y adapter tube, Z adapter tube access intermediate pressure cavity interface by the
The opening and closing of two sliding blocks, the First pressure chamber are connected with the first communication port, and the second pressure chamber is connected with the second communication port.
Preferably, the E adapter tube, S adapter tube, C adapter tube, X take over, Y takes over, the interface position of Z adapter tube access intermediate pressure cavity
It is staggered in the circumferential direction of intermediate pressure cavity in the same circumferential position of intermediate pressure cavity, and with the interface of D connection.
Preferably, the intermediate pressure is intracavitary is equipped with the first valve seat and the second valve seat, and the E adapter tube, S adapter tube, C adapter tube are logical
The first valve seat access intermediate pressure cavity is crossed, sliding sealing surface fit structure, institute are equipped between first valve seat and the first sliding block
It states X adapter tube, Y adapter tube, Z adapter tube and intermediate pressure cavity is accessed by the second valve seat, also set between second valve seat and the second sliding block
There is sliding sealing surface fit structure.
Preferably, first sliding block is bridge architecture, and bridge opening is the connection chamber for being connected to two-phase adjacent pipe in the first sliding block,
First slider bottom both ends are respectively provided with a L-type stabilizer blade, and the L-type foot bottom board bottom face is slidingly sealed with the first valve seat.
Preferably, second sliding block is bridge architecture, and bridge opening is the connection chamber for being connected to two-phase adjacent pipe in the second sliding block,
Second slider bottom both ends are respectively provided with a L-type stabilizer blade, and the L-type foot bottom board bottom face is slidingly sealed with the second valve seat, the L-type
The bottom plate of stabilizer blade extends to form the valve plate of blanked-off nozzle interface outward.
Preferably, the leading truck is equipped with slider bore, and first sliding block and the second sliding block penetrate slider bore.
In addition, the invention also provides a kind of air-conditioning system, including compressor, indoor unit, outdoor unit, bypass heat exchanger,
Expansion valve is additionally provided with pilot valve and combinations of the above formula electromagnetic switching valve；
When refrigeration, pilot valve iron inner core and attractor are detached from, and high-pressure refrigerant enters combined electrical after coming out from pilot valve
Magnetic switching valve second pressure chamber pushes piston component and sliding block to move toward First pressure chamber side, so that D connection is led with C adapter tube
Logical, E adapter tube is connected with S adapter tube by the first sliding block, and Z adapter tube is by the valve plate closing of the second sliding block, and refrigerant is from compressor outlet
After out, heat exchanger → expansion valve → indoor unit is bypassed followed by D connection → C adapter tube → outdoor unit → Y adapter tube → X takes over →
→ E adapter tube → S adapter tube → compressor；
When heating, pilot valve iron inner core and attractor are attracted, and high-pressure refrigerant enters combined electrical after coming out from pilot valve
Magnetic switching valve First pressure chamber pushes piston component and sliding block to move toward second pressure chamber side, so that D connection is led with E adapter tube
Logical, C adapter tube is connected with S adapter tube by the first sliding block, and X adapter tube is by the valve plate closing of the second sliding block, and refrigerant is from compressor outlet
After out, connect followed by D connection → E adapter tube → indoor unit → expansion valve → Z adapter tube → Y adapter tube → outdoor unit → C adapter tube → S
Pipe → compressor.
The present invention is switched by the driving of pilot valve, automatically switches refrigerant stream using the height pressure difference in air-conditioning system
To realizing the conversion of air-conditioning system operating status, without being additionally provided power source, not will cause big drag losses, therefore
Cost has been saved, energy consumption is reduced.
Detailed description of the invention
Present invention will be further described below with reference to the accompanying drawings and specific embodiments:
Fig. 1 is combined electromagnetic switch valve structure schematic diagram；
Fig. 2 is the working principle diagram after combined electromagnetic switching valve access air-conditioning system in refrigerating state；
Fig. 3 is the working principle diagram after combined electromagnetic switching valve access air-conditioning system in heating state.
Specific embodiment
As shown in Figure 1 to Figure 3, combined electromagnetic switching valve, including valve body 10 are respectively equipped with first at body cavity both ends
Piston component 11 and second piston component 12 form first pressure between the first piston component and corresponding valve body end cap
Chamber forms second pressure chamber between the second piston component and corresponding valve body end cap, living in first piston component and second
Intermediate pressure cavity is formed between plug assembly, it is intracavitary equipped with sliding block, the sliding block and first piston component and second in intermediate pressure
Piston component connection, the sliding block include the first sliding block 13 and the second sliding block 14, and first sliding block and the second sliding block are installed on
On same leading truck 15, first sliding block 13 and the second sliding block 14 are with leading truck 15 together by first piston component 11, second
12 drives edge intermediate pressure cavity of piston component slides axially, and the intermediate pressure cavity is connected with E adapter tube, S adapter tube, C adapter tube, D and connects
Pipe, X adapter tube, Y adapter tube, Z adapter tube, the E takes over, the interface of S adapter tube, C adapter tube access intermediate pressure cavity is arranged side by side in order,
The interface that the E adapter tube, S adapter tube, C adapter tube access intermediate pressure cavity is opened and closed by the first sliding block 13, and the X adapter tube, Y adapter tube, Z connect
The interface of pipe access intermediate pressure cavity is arranged side by side in order, and the X adapter tube, Y adapter tube, Z adapter tube access connecing for intermediate pressure cavity
Mouth is opened and closed by the second sliding block 14, and the First pressure chamber is connected with the first communication port 101, and the second pressure chamber is connected with second
Communication port 102.
The E adapter tube, S adapter tube, C adapter tube, X adapter tube, Y take over, the interface of Z adapter tube access intermediate pressure cavity is located at intermediate pressure
The same circumferential position of power chamber, and be staggered in the circumferential direction of intermediate pressure cavity with the interface of D connection.The intermediate pressure is intracavitary to be set
There are the first valve seat and the second valve seat, the E adapter tube, S adapter tube, C, which take over, passes through the first valve seat access intermediate pressure cavity, and described first
Sliding sealing surface fit structure is equipped between valve seat and the first sliding block, the X adapter tube, Y adapter tube, Z adapter tube are connect by the second valve seat
Enter intermediate pressure cavity, also is provided with sliding sealing surface fit structure between second valve seat and the second sliding block.First sliding block
13 be bridge architecture, and bridge opening is the connection chamber for being connected to two-phase adjacent pipe in the first sliding block, and the first slider bottom both ends are respectively provided with a L
Type stabilizer blade, the L-type foot bottom board bottom face are slidingly sealed with the first valve seat.Second sliding block 14 is bridge architecture, and second is sliding
Bridge opening is the connection chamber for being connected to two-phase adjacent pipe in block, and the second slider bottom both ends are respectively provided with a L-type stabilizer blade, the L-type stabilizer blade
Bottom plate bottom surface is slidingly sealed with the second valve seat, and the bottom plate of the L-type stabilizer blade extends to form the valve plate of blanked-off nozzle interface outward.
The leading truck 15 is equipped with slider bore, and first sliding block 13 and the second sliding block 14 penetrate slider bore.
As shown in Figures 2 and 3, combinations of the above formula electromagnetic switching valve accesses air-conditioning system, the air-conditioning system, including compression
Machine, indoor unit, outdoor unit, bypass heat exchanger, expansion valve, pilot valve.
Wherein, the pilot valve is equipped with access tube 21 and E capillary, S capillary, C capillary, the access tube 21 with
D connection is connected, and the E capillary and the first communication port 101 are connected, and the C capillary and the second communication port 102 are connected, the S
Capillary and S adapter tube are connected.
E adapter tube is connected to indoor unit first interface, and Z adapter tube is connected to indoor unit second interface, Z adapter tube and indoor unit second
Pipeline is equipped with expansion valve between interface, and C adapter tube is connected to outdoor unit first interface, and Y adapter tube is connected to outdoor unit second interface,
X adapter tube is connected to bypass heat exchanger first interface, pipeline between bypass heat exchanger second interface access expansion valve and Z adapter tube, pressure
Contracting machine is set to S and takes between D connection on pipeline.
When refrigeration, pilot valve iron inner core and attractor are detached from, and high-pressure refrigerant enters switching valve the after coming out from pilot valve
Two pressure chambers push piston component and sliding block to move toward First pressure chamber side, so that D connection and C adapter tube are connected, E adapter tube and S
Adapter tube is by bridge opening conducting in the first sliding block, and Z takes over to be closed by the valve plate of the second sliding block, and refrigerant comes out from compressor outlet
Afterwards, heat exchanger → expansion valve → indoor unit → E is bypassed followed by D connection → C adapter tube → outdoor unit → Y adapter tube → X takes over →
Adapter tube → S adapter tube → compressor；
When heating, pilot valve iron inner core and attractor are attracted, and high-pressure refrigerant enters switching valve the after coming out from pilot valve
One pressure chamber pushes piston component and sliding block to move toward second pressure chamber side, so that D connection and E adapter tube are connected, C adapter tube and S
Adapter tube is by bridge opening conducting in the first sliding block, and X takes over to be closed by the valve plate of the second sliding block, and refrigerant comes out from compressor outlet
Afterwards, followed by D connection → E adapter tube → indoor unit → expansion valve → Z adapter tube → Y adapter tube → outdoor unit → C adapter tube → S adapter tube →
Compressor.
Claims (8)
1. combined electromagnetic switching valve, including valve body are respectively equipped with first piston component and second piston at body cavity both ends
Component, forms First pressure chamber between the first piston component and corresponding valve body end cap, the second piston component with it is right
Second pressure chamber is formed between the valve body end cap answered, and forms intermediate pressure between first piston component and second piston component
Chamber, intracavitary equipped with sliding block in intermediate pressure, the sliding block is connect with first piston component and second piston component, and feature exists
In: the sliding block includes the first sliding block and the second sliding block, and the intermediate pressure cavity is connected with E adapter tube, S adapter tube, C adapter tube, D and connects
Pipe, X adapter tube, Y adapter tube, Z adapter tube, when refrigeration, D connection and C adapter tube are connected, and E adapter tube is connected with S adapter tube by the first sliding block, Z
Adapter tube is closed by the valve plate of the second sliding block, and X adapter tube is taken over Y to be connected by the second sliding block；When heating, D connection is led with E adapter tube
Logical, C adapter tube be connected with S adapter tube by the first sliding block, and X takes over to be closed by the valve plate of the second sliding block, and Y adapter tube and Z, which take over, passes through the
The conducting of two sliding blocks.
2. combined electromagnetic switching valve according to claim 1, it is characterised in that: the E adapter tube, S adapter tube, C connect
The interface for entering intermediate pressure cavity is arranged side by side in order, E adapter tube, S adapter tube, C adapter tube access intermediate pressure cavity interface by
The opening and closing of first sliding block, the interface that the X adapter tube, Y adapter tube, Z adapter tube access intermediate pressure cavity are arranged side by side in order, and the X connects
The interface that pipe, Y adapter tube, Z adapter tube access intermediate pressure cavity is opened and closed by the second sliding block, and the First pressure chamber is connected with the first connection
Mouthful, the second pressure chamber is connected with the second communication port.
3. combined electromagnetic switching valve according to claim 2, it is characterised in that: the E adapter tube, S adapter tube, C adapter tube, X
Adapter tube, Y adapter tube, Z adapter tube access intermediate pressure cavity interface be located at the same circumferential position of intermediate pressure cavity, and with D connection
Interface is staggered in the circumferential direction of intermediate pressure cavity.
4. combined electromagnetic switching valve according to claim 3, it is characterised in that: the intermediate pressure is intracavitary to be equipped with first
Valve seat and the second valve seat, E adapter tube, S adapter tube, C adapter tube access intermediate pressure cavity by the first valve seat, first valve seat with
Sliding sealing surface fit structure is equipped between first sliding block, the X adapter tube, Y adapter tube, Z adapter tube are intermediate by the access of the second valve seat
Pressure chamber also is provided with sliding sealing surface fit structure between second valve seat and the second sliding block.
5. combined electromagnetic switching valve according to any one of claims 1 to 4, it is characterised in that: first sliding block
For bridge architecture, bridge opening is the connection chamber for being connected to two-phase adjacent pipe in the first sliding block, and the first slider bottom both ends are respectively provided with a L-type
Stabilizer blade, the L-type foot bottom board bottom face are slidingly sealed with the first valve seat.
6. combined electromagnetic switching valve according to claim 5, it is characterised in that: second sliding block is bridge architecture,
Bridge opening is the connection chamber for being connected to two-phase adjacent pipe in second sliding block, and the second slider bottom both ends are respectively provided with a L-type stabilizer blade, the L
Type foot bottom board bottom face is slidingly sealed with the second valve seat, and the bottom plate of the L-type stabilizer blade extends to form blanked-off nozzle interface outward
Valve plate.
7. combined electromagnetic switching valve according to claim 6, it is characterised in that: first sliding block and the second sliding block peace
Loaded on same leading truck, the leading truck is equipped with slider bore, and first sliding block and the second sliding block penetrate slider bore.
8. a kind of air-conditioning system, including compressor, indoor unit, outdoor unit, bypass heat exchanger, expansion valve, it is characterised in that: also set
There is combined electromagnetic switching valve described in pilot valve and claim 1 to 6 any one；When refrigeration, pilot valve iron inner core and
Attractor is detached from, and high-pressure refrigerant enters combined electromagnetic switching valve second pressure chamber after coming out from pilot valve, pushes piston group
Part and sliding block are moved toward First pressure chamber side, so that D connection and C adapter tube are connected, E adapter tube is taken over S is led by the first sliding block
Logical, Z takes over to be closed by the valve plate of the second sliding block, after refrigerant comes out from compressor outlet, followed by D connection → C adapter tube →
Outdoor unit → Y adapter tube → X takes over → bypasses heat exchanger → expansion valve → indoor unit → E adapter tube → S adapter tube → compressor；
When heating, pilot valve iron inner core and attractor are attracted, and high-pressure refrigerant is cut after coming out from pilot valve into combined electromagnetic
Valve First pressure chamber is changed, piston component and sliding block is pushed to move toward second pressure chamber side, so that D connection and E adapter tube are connected, C
Adapter tube is taken over S and is connected by the first sliding block, and X takes over to be closed by the valve plate of the second sliding block, and refrigerant comes out from compressor outlet
Afterwards, followed by D connection → E adapter tube → indoor unit → expansion valve → Z adapter tube → Y adapter tube → outdoor unit → C adapter tube → S adapter tube →
Compressor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510252452.3A CN106286891B (en) | 2015-05-15 | 2015-05-15 | Combined electromagnetic switching valve and its air-conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510252452.3A CN106286891B (en) | 2015-05-15 | 2015-05-15 | Combined electromagnetic switching valve and its air-conditioning system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106286891A CN106286891A (en) | 2017-01-04 |
| CN106286891B true CN106286891B (en) | 2019-06-11 |
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ID=57631535
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510252452.3A Active CN106286891B (en) | 2015-05-15 | 2015-05-15 | Combined electromagnetic switching valve and its air-conditioning system |
Country Status (1)
| Country | Link |
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| CN (1) | CN106286891B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111442115B (en) * | 2020-03-19 | 2021-04-02 | 珠海格力电器股份有限公司 | Four-way valve and air conditioning system using same |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000046213A (en) * | 1998-07-28 | 2000-02-18 | Calsonic Corp | Flow path switching valve |
| CN102252114A (en) * | 2010-05-17 | 2011-11-23 | 株式会社鹭宫制作所 | Flow path switching valve |
| JP2014190642A (en) * | 2013-03-28 | 2014-10-06 | Hitachi Appliances Inc | Air conditioner |
| CN204027097U (en) * | 2014-05-20 | 2014-12-17 | 珠海格力电器股份有限公司 | Heat pump air conditioner and fluid reversing mechanism |
| JP2015075211A (en) * | 2013-10-11 | 2015-04-20 | ダイキン工業株式会社 | Flow passage selector valve and refrigerant circuit |
-
2015
- 2015-05-15 CN CN201510252452.3A patent/CN106286891B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000046213A (en) * | 1998-07-28 | 2000-02-18 | Calsonic Corp | Flow path switching valve |
| CN102252114A (en) * | 2010-05-17 | 2011-11-23 | 株式会社鹭宫制作所 | Flow path switching valve |
| JP2014190642A (en) * | 2013-03-28 | 2014-10-06 | Hitachi Appliances Inc | Air conditioner |
| JP2015075211A (en) * | 2013-10-11 | 2015-04-20 | ダイキン工業株式会社 | Flow passage selector valve and refrigerant circuit |
| CN204027097U (en) * | 2014-05-20 | 2014-12-17 | 珠海格力电器股份有限公司 | Heat pump air conditioner and fluid reversing mechanism |
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| Publication number | Publication date |
|---|---|
| CN106286891A (en) | 2017-01-04 |
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