Combined electromagnetic switching valve and its air-conditioning systemTechnical 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.NowSolve 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 simultaneouslyJoin 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 wayOutdoor 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 simultaneouslyJoin 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, formerlyThe 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 systemEffective 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 bodyFirst 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 pressureIt 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 pressureChamber 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 blockValve 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 blockValve 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 EThe 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 accessThe 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 theThe 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 cavityIt 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 logicalThe 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 blockIt 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 blockThere 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-typeThe 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 valveMagnetic 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 tubeLogical, 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 outletAfter 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 valveMagnetic 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 tubeLogical, 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 outletAfter out, connect followed by D connection → E adapter tube → indoor unit → expansion valve → Z adapter tube → Y adapter tube → outdoor unit → C adapter tube → SPipe → compressor.
The present invention is switched by the driving of pilot valve, automatically switches refrigerant stream using the height pressure difference in air-conditioning systemTo realizing the conversion of air-conditioning system operating status, without being additionally provided power source, not will cause big drag losses, thereforeCost 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 endsPiston component 11 and second piston component 12 form first pressure between the first piston component and corresponding valve body end capChamber forms second pressure chamber between the second piston component and corresponding valve body end cap, living in first piston component and secondIntermediate 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 pressurePiston 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 onOn 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, second12 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 connectsPipe, 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 connectThe 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 cavityMouth 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 secondCommunication 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 pressureThe 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 setThere 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 firstSliding 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 seatEnter intermediate pressure cavity, also is provided with sliding sealing surface fit structure between second valve seat and the second sliding block.First sliding block13 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 LType 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 slidingBridge 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 bladeBottom 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 compressionMachine, 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 withD 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 SCapillary 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 secondPipeline 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, pressureContracting 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 valveTwo 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 SAdapter 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 outletAfterwards, 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 valveOne 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 SAdapter 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 outletAfterwards, 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.