CN2197500Y - Four-way electromagnetic change valve - Google Patents
Four-way electromagnetic change valve Download PDFInfo
- Publication number
- CN2197500Y CN2197500Y CN 94217324 CN94217324U CN2197500Y CN 2197500 Y CN2197500 Y CN 2197500Y CN 94217324 CN94217324 CN 94217324 CN 94217324 U CN94217324 U CN 94217324U CN 2197500 Y CN2197500 Y CN 2197500Y
- Authority
- CN
- China
- Prior art keywords
- communicated
- valve
- capillary tube
- valve body
- pilot valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Revoked
Links
- 230000008859 change Effects 0.000 title abstract description 3
- 238000005057 refrigeration Methods 0.000 claims abstract description 15
- 239000003507 refrigerant Substances 0.000 claims abstract description 7
- 238000002955 isolation Methods 0.000 claims abstract description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 abstract description 7
- 239000011148 porous material Substances 0.000 description 5
- 238000001704 evaporation Methods 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 230000009102 absorption Effects 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000000306 recurrent effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 210000003734 kidney Anatomy 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
Images
Landscapes
- Multiple-Way Valves (AREA)
Abstract
The utility model discloses a modified four-way electromagnetic directional valve of constituteing by main valve and pilot valve, characterized by is equipped with a pair ofly through the balladeur train in the left and right sides of slider and slides with the valve body inner wall, the piston of isolation, establish high-pressure capillary between the exhaust tubulation on the pilot valve body and main valve, and adopt the guide reversing mechanism who comprises switching-over piece and the little slider that can slide on the switching-over piece in the pilot valve, thereby solved among the prior art if the switching-over speed is slow, the reliability is poor, it is big to make the degree of difficulty, with high costs, let out leakage quantity big scheduling problem. The utility model discloses a change the refrigerant flow direction among the heat pump type air conditioner, realize the key part of refrigeration or heating purpose.
Description
The utility model relates to a kind of heat pump type air conditioner that is used for and changes refrigerant flow direction, realize refrigeration or heat the four-way electromagnetic reversing valve of purpose, especially a kind of four-way electromagnetic reversing valve of being made up of main valve and pilot valve that has improved.
Science and Technology of Shanghai publishing house publish by in the 232nd page of " freon refrigeration machine " book of chief editors such as Jiang Nengzhao, introduced a kind of structure and the similar selector valve of four-way electromagnetic reversing valve that is widely used at present in the heat pump air conditioner, it is made up of main valve and pilot valve two major parts.Main valve comprises a valve body, there is the steam discharge that is connected with the compressor exhaust steam pipe to take on the valve body, have the suction vapour that is connected with compressor suction duct to take over, inhaling vapour adapter both sides respectively has a left side to take over and right adapter, so that they are connected with outdoor heat converter with indoor heat converter respectively; Slide block and pair of pistons are housed in the valve body, and they constitute one mutually with balladeur train, and bleeder port is respectively arranged on the piston of two ends, so that can ventilate mutually in the piston two ends; Respectively there is a thimble on the top of each piston, and the two ends in the valve body are corresponding with the piston thimble a left air chamber, right air chamber, and when thimble contacted with air chamber limit mouth, this air chamber was promptly isolated with body cavity.
Pilot valve comprises a pilot valve body, the intercommunicating pore that left valve chamber, right valve chamber is arranged in this pilot valve body and be communicated with its two valve chamber; Left valve chamber and right valve chamber are communicated with left air chamber, right air chamber on the valve body of main valve by left capillary tube, right capillary tube respectively; Said intercommunicating pore is taken over above-mentioned suction vapour by shared capillary tube and is communicated with; Electromagnetic coil of overcoat on the pilot valve body by the operation of this electromagnetic coil, makes the alternately inaccessible of taper that armature connects left side valve plug, the right valve plug of taper in the pilot valve body, the position of change main valve slide block and commutating, thus control the flow direction of refrigeration agent.
The working principle of this selector valve is as follows: when the air conditioner refrigerating operaton, electromagnetic coil no electric circuit on the pilot valve, armature in the pilot valve body moves to left under the promotion of spring, make with the right valve plug that armature fuses and blocked right capillary tube and shared capillaceous the connection, and left capillary tube is connected with shared capillary tube and the adapter of suction vapour by the left valve chamber.The high pressure gas of compressor is taken over by steam discharge and is entered in the valve body, fills vapour by the bleeder port on the right piston in the valve body right-hand member, sets up high pressure gradually; Because left capillary tube and shared capillary tube are connected, and the capillary tube aperture is than the big several times of the bleeder port on the piston, therefore, the gas that flows through from bleeder port leads to the compressor steam absorbing tube rapidly, so left end in the valve body, promptly high pressure can not be set up in the left side of left piston, formed a pressure difference like this at the two ends of piston set, slide block and piston are pushed to left position, make the thimble on the left piston block left air chamber, blocked the high pressure flow of gas to inhaling the path that vapour is taken over.The slide position of valve body is taken over a left side adapter suction vapour and is communicated with at this moment, and the steam discharge adapter has been connected right adapter by valve body.Vapour road flow process is: high pressure gas → steam discharge adapter → valve body → right side adapter → outdoor heat converter → capillary tube → indoor heat converter that compressor is discharged → left side adapter → suction vapour is taken over, and is sucked by compressor.Air conditioner is in the refrigeration cycle working state.When air conditioner heat-production heating, the electromagnetic coil energising of selector valve, armature is under the electromagnetic force effect, move right, the left valve plug that links to each other with armature has been closed left capillary tube and shared capillaceous the connection, and right capillary tube by right valve chamber, intercommunicating pore and shared capillary tube, inhale vapour and take over and connect, so the high pressure gas in the valve body right-hand member from right capillary tube through shared capillary flow to the compressor steam absorbing tube, make the interior pressure of valve body right-hand member equal to inhale vapour low pressure.And in the valve body left end, because left capillary tube is plugged obstructedly, high pressure vapour fills vapour from the bleeder port on the left piston to left end, and pressure is risen to and the Compressor Discharge Pressure balance.Like this, left and right two ends in the valve body produce pressure difference, the thimble that piston drive slide block moves right together to right piston is blocked right air chamber, slide block will be inhaled vapour and take over right side adapter and be communicated with this moment, steam discharge is taken over a left side and is taken over connection, vapour road direction is: compressor high pressure gas → steam discharge adapter → valve body → left side adapter → indoor heat converter → capillary tube → outdoor heat converter → right side adapter → suction vapour is taken over, and enters the compressor steam absorbing tube.By the commutation of selector valve to pipeline, the evaporating state of indoor heat exchange becomes condensing state when making original refrigerating operaton, and the condensing state of outdoor heat converter becomes evaporating state, thereby realizes from outdoor (heat exchanger) heat absorption and to indoor (heat exchanger) heat release.
The selector valve of said structure is when commutation, the pressure at two ends difference that the promotion piston set moves is slowly to form by bleeder port, thereby commutating speed is slow, and secondly according to the function of bleeder port, its aperture is inevitable very little, be generally 0.3 millimeter, so little hole is easily intrasystem foreign matter and stops up, and produces not commutating of this commutation, and after the left and right valve plug of taper in the pilot valve and/or intercommunicating pore limit mouth be stained with foreign matter, occlusive is poor, easily gas leakage.Be in order to commutate once more, require the reliable valve plug that stops up in corresponding air chamber and the pilot valve of thimble to block the limit mouth of intercommunicating pore, this making and assembling to related components has proposed high required precision, cost greatly improves, in fact often do not reach high required precision, cause selector valve internal leakage amount to increase, thereby influence the refrigerating capacity or the heating capacity of heat pump type air conditioner.
For this reason, the purpose of this utility model provide that a kind of commutating speed is fast, good reliability, four-way electromagnetic reversing valve that the internal leakage amount is low.
For achieving the above object, solution of the present utility model is: the piston of cancellation band bleeder port and thimble, use piston instead with valve interior wall slip, seal isolation, and on taking over, steam discharge sets up the high pressure capillary that is communicated with the pilot valve intracoelomic cavity, thereby take over by steam discharge and to enter the high pressure gas of pilot valve intracoelomic cavity through high pressure capillary the respective end in valve body forms the zone of high pressure by left capillary tube or right capillary tube, directly promote the piston in the valve body and drive slide block to move, realize changing the purpose of refrigerant flow direction.Adopt one by commutation piece and guide's changement of forming with the small slide block of armature interlock in pilot valve, the small slide block by solenoid operation slides the high low pressure at the interior two ends of convertible valve body of main valve, thereby the movement direction of control piston on the commutation piece.
A port that is communicated with shared capillary tube on the pilot valve body is arranged on the above-mentioned commutation piece slip surface, the left and right limit of this port have respectively with the pilot valve body on left capillary tube, left port and the right port that right capillary tube is communicated with; Described small slide block is a spill, slides on the commutation piece, left port is communicated with port, thereby left capillary tube is communicated with shared capillary tube, and right port is communicated with port, and right capillary tube is communicated with shared capillary tube.
The utility model has the advantages that: (1) is owing to adopt the high pressure capillary in the high pressure gas introducing pilot valve body and the piston of no bleeder port, thereby when commutation, the high pressure gas is by high pressure capillary and pilot valve, respective end in valve body forms the zone of high pressure rapidly, meanwhile, because having connected the adapter of suction vapour, guide's changement is in low pressure between the other end and the piston in the valve body, the pressure reduction at two ends forms rapidly in the valve body, piston set is moved thereupon, and the operating high low pressure of piston is isolated all the time, so commutation rapidly, reliably.(2) owing to do not have bleeder port, thimble on the piston, and the slip surface of small slide block in the pilot valve and commutation piece can be the plane again, and simple in structure, accuracy of manufacturing and sealing are guaranteed easily, and overall cost reduces, the cost performance height.
Below in conjunction with drawings and Examples the utility model is described in further detail.
Fig. 1 is the structural section figure of the utility model four-way electromagnetic reversing valve under the refrigeration cycle state.
Fig. 2 is that the utility model four-way electromagnetic reversing valve is at the structural section figure that heats under the recurrent state.
Fig. 3 is the utility model four-way electromagnetic reversing valve overall structure perspective view.
As shown in Figure 1 and Figure 2, the utility model four-way electromagnetic reversing valve is made up of main valve 2 and pilot valve 1.Main valve comprises a columnar valve body 13, end cap 14 sealing of its two ends.Fix a valve seat piece 9 on the inwall of valve body 13, this valve seat piece has a plane slip surface 10, have three through holes 8,7,6 on the slip surface vertically, its middle hole 7 is taken over 3 with the suction vapour on the valve body and is communicated with, two holes 8,6 of left and right sides respectively with valve body on a left side take over 5, rightly take over 4 and communicate.Described suction vapour is taken over 3 and can be linked to each other with the steam absorbing tube of compressor 36, a left side take over 5 and right side adapter 4 can be respectively with indoor heat converter 39 be connected with outdoor heat converter 37 the corresponding interface that indoor heat converter is gone here and there mutually.The medium position of valve body 13 also is connected with and can takes over 31 with the steam discharge of linking up in compressor 36 exhaust steam pipes and the valve body.A slide block 11 that contacts with valve seat piece slip surface 10 and the piston 15 of pair of separated are housed in the valve body 13, and they constitute one mutually with balladeur train 12.Described piston 15 is made of piston cup 16 and butterfly spring 17, makes it the function that has slip, sealing and isolate with valve body 13 inwalls.Described slide block is a bowl-type, when slide block 11 with piston 15 when valve body 13 inwalls horizontally slip, a left side can be taken over 5 with inhale that vapour takes over 3, steam discharge takes over 30 and takes over 4 and is communicated with right, also can make inhale vapour take over 3 with rightly take over 4, left adapter 5 is communicated with steam discharge adapter 30.
As Fig. 1 or shown in Figure 2, pilot valve 1 comprises a pilot valve body 22 and an electromagnetic coil 28.These pilot valve body 22 inner chambers are taken over 31 by a high pressure capillary 24 and described steam discharge and are connected.Described electromagnetic coil 28 is enclosed within on the sleeve pipe 26 that is fixed together with pilot valve body 22, the other end of sleeve pipe has one grade of iron 30 sealing, have one can put in the armature 27 that pilot valve body 22 inner chambers have slide plate 25 in the sleeve pipe 26, between armature 27 and shelves iron 30, Returnning spring 29 is arranged; Fix a commutation piece 21 in the pilot valve body in the shin, these commutation piece 21 upper surfaces are the plane, are sliding on it one to be loaded on spill small slide block 23 in the slide plate 25 kidney slot holes, thereby are constituting guide's changement.The slip surface of commutation piece 21 has left port 20, port 33 and right port 32 vertically, they respectively in the left end cap 14 by the left capillary tube 18 on the pilot valve, shared capillary tube 19, right capillary tube 31 and valve body, inhale that vapour takes over 3,35 interior connections of right end cap of valve body.Small slide block 23 alternately sliding on commutation piece 21 slip surfaces by electromagnetic coil 28 operations, left capillary tube 18 can be communicated with high pressure capillary 24 with shared capillary tube 19, right capillary tube 31, also right capillary tube 31 can be communicated with high pressure capillary 24 with shared capillary tube 19, left capillary tube 18.
Narrate the working principle of the utility model four-way electromagnetic reversing valve below.
Fig. 1 is the structural section figure of the utility model under the refrigeration cycle state.When need room temperature lowering summer, heat pump type air conditioner should be made refrigerating operaton, electromagnetic coil 28 no electric circuits in this supporting with it four-way electromagnetic reversing valve, armature 27 in the pilot valve 1 is under Returnning spring 29 effects, drive small slide block 23 by slide plate 25 and shift to left end, at this moment the left port 20 and the port 34 that commutate on the piece 21 are communicated with by the small slide block 23 of spill, and left capillary tube 18 is connected with shared capillary tube 19, and high pressure capillary 24 also has been communicated with by pilot valve body 22 with right capillary tube 31 simultaneously.The high pressure refrigeration gas that compressor 36 is discharged takes over 32 by steam discharge, high pressure capillary 24, pilot valve body 22, enter right-hand member district in the valve body of main valve 13 through right capillary tube 31, the pressure in right-hand member district is raise gradually become the zone of high pressure, the residual air in valve body 13 left end districts is by left capillary tube 18 simultaneously, shared capillary tube 19, inhaling vapour takes over 3 and is sucked by compressor 36, valve body left end district becomes low pressure area, formed a pressure difference on the piston 15 at two ends, slide block 11 left and right sides, thereby slide block 11 and piston set 15 are pushed to left position, this moment left side is taken over 5 and is taken over 3 and is communicated with inhaling vapour, and right adapter 4 and steam discharge adapter 32 also have been communicated with by valve body 13.The high pressure refrigeration gas of compressor 36 is taken over 32 by steam discharge and is entered valve body 13, cooling becomes the high pressure refrigerant liquid after outdoor heat converter 37, condensation heat release are gone in right side adapter 4, then through capillary tube 38, by indoor heat converter 39 evaporation heat absorption vaporizations, siphoned away the indoor section heat, room temperature is descended.The low pressure refrigeration gas that comes out from indoor heat converter is taken over 5, is inhaled vapour and take over 3 and sucked by compressor 36 by a left side, thereby has finished a refrigeration cycle.
Fig. 2 is that the utility model is at the structural section figure that heats under the recurrent state.When need indoor heating winter, four way solenoid valve in the heat pump type air conditioner is made heating operation, electromagnetic coil 28 energisings, armature 27 in the pilot valve 1 is under electromagnetic coil 28 magnetic force effects, overcome Returnning spring 29 power, drive small slide block 23 and be drawn to right end position, at this moment right port 33 and port 34 are communicated with, right capillary tube 31 and shared capillary tube 19 are connected, and high pressure capillary 24 also is communicated with left capillary tube 18 by pilot valve 1 simultaneously.High pressure refrigeration gas enters the left end district in the valve body 13 by steam discharge adapter 32, high pressure capillary 24, pilot valve body 22, left capillary tube 18, left end district pressure is raise becomes the zone of high pressure, simultaneously valve body 13 right-hand member districts because of with right capillary tube 31, shared capillary tube 19, inhale vapour adapter 3, compressor low pressure steam absorbing tube is communicated with becomes low pressure area.Formed a pressure difference on the piston set 15 at two ends, slide block 11 left and right sides, thereby rapidly slide block 11 and piston have been pushed to right end position for 15 groups.This moment is right takes over 4 and takes over 3 and is communicated with inhaling vapour, and left side adapter 5 and steam discharge adapter 32 also have been communicated with by valve body 13.Take over 5 by indoor heat converter 39 condensation heat releases from the high pressure refrigeration gas that compressor 36 is discharged through steam discharge adapter 32, valve body 13, a left side, indoor air temperature is raise, the high pressure refrigerant liquid that flows out indoor heat converter is by the 37 evaporation heat absorptions of capillary tube 38 inlet chamber outer heat-exchangers, become low pressure refrigeration gas, take over 3 cooled compressors and suck through right side adapter 4, suction vapour, heat circulation thereby finished.
Fig. 3 is an integrally-built four-way electromagnetic reversing valve perspective view of dressing up a practicality according to the structural group of Fig. 1 and Fig. 2.Pilot valve 1 is positioned at the top of main valve 2, with being welded in a support 40 on the valve body, pilot valve 1 one end grooves is stuck in the circular hole of support upper shed fixing.For ease of easy to use in heat pump type air conditioner, from valve body radially the side steam discharge of drawing take over 32 and bend to " U " type, make steam discharge take over that 32 the mouth of pipe is taken over 5 mouths of pipe with a left side, inhaling vapour, to take over the direction of 3 mouths of pipe, right adapter 4 mouths of pipe consistent.
The utility model four-way electromagnetic reversing valve commutating speed is fast, and good reliability is easily manufactured, and cost is low, and the internal leakage amount is low, thereby does the refrigerant flow direction conversion in heat pump type air conditioner, realizes freezing or heating in the heating purpose, and is effective.
Claims (2)
1, a kind of heat pump type air conditioner that is used for changes the four-way electromagnetic reversing valve that refrigerant flow direction is realized refrigeration or heated purpose, form by main valve and pilot valve, described main valve comprises a cylinder valve, fixing a valve seat piece that has three through holes vertically on the inwall of valve body, there is the left side that can be communicated with to take over respectively with these three through hole corresponding positions on the valve body, the right side adapter that the suction vapour that can be communicated with compressor steam absorbing tube in the air conditioner is taken over and can be communicated with outdoor heat converter in the air conditioner with the indoor heat converter in the air conditioner; The steam discharge that can be communicated with compressor exhaust steam pipe and body cavity in the air conditioner in addition on the valve body is taken over; The slide block that sliding on the valve seat piece, when slide block when valve seat piece slip surface horizontally slips, a left side can be taken over and inhale that vapour is taken over, steam discharge is taken over be communicated with right the adapter, also can make and inhale vapour and take over right adapter, steam discharge adapter and be communicated with left adapter; Described pilot valve comprises a pilot valve body, and the sleeve pipe that an end and pilot valve body are fixing has a grade iron, thereby constitutes a Seal cage in the other end of sleeve pipe, armature and Returnning spring are arranged, electromagnetic coil of sleeve pipe overcoat in the sleeve pipe; Also have on the pilot valve with above-mentioned valve body in two ends, the left and right sides and inhale vapour and take over left capillary tube, right capillary tube and the shared capillary tube that is communicated with respectively, of the present utility model being characterised in that:
A. the left and right square tube of slide block cross a balladeur train be equipped with valve interior wall slide, the pair of pistons of seal isolation;
B. in pilot valve, adopt guide's changement of forming by commutation piece and the small slide block with the armature interlock that can on the commutation piece, slide;
C. on the pilot valve body, there is one to take over the high pressure capillary that is communicated with pilot valve intracoelomic cavity and steam discharge respectively.
2, four-way electromagnetic reversing valve according to claim 1, it is characterized in that: have left port, port and right port on the slip surface of described commutation piece vertically, they are communicated with left capillary tube, shared capillary tube and right capillary tube on the pilot valve respectively, described small slide block is a spill, on the commutation piece, slide, left port is communicated with port, above-mentioned left capillary tube is communicated with shared capillary tube, right port is communicated with port, right capillary tube is communicated with shared capillary tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94217324 CN2197500Y (en) | 1994-07-13 | 1994-07-13 | Four-way electromagnetic change valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94217324 CN2197500Y (en) | 1994-07-13 | 1994-07-13 | Four-way electromagnetic change valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2197500Y true CN2197500Y (en) | 1995-05-17 |
Family
ID=33832802
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94217324 Revoked CN2197500Y (en) | 1994-07-13 | 1994-07-13 | Four-way electromagnetic change valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2197500Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100590324C (en) * | 2006-10-16 | 2010-02-17 | 太原理工大学 | Guide proportion directional throttle valve |
| CN1932352B (en) * | 2005-09-15 | 2011-05-04 | 株式会社鹭宫制作所 | Fluid switching valve |
| CN102588627A (en) * | 2011-01-06 | 2012-07-18 | 浙江三花制冷集团有限公司 | Air-conditioning reversing valve and air-conditioning system |
| CN105972879A (en) * | 2016-07-05 | 2016-09-28 | 安徽天大电子科技股份有限公司 | Electromagnetic four-way reversing valve |
| US9528616B2 (en) | 2013-08-28 | 2016-12-27 | Smc Corporation | Five-port switching valve with residual pressure exhaust valve |
| CN110274053A (en) * | 2018-03-13 | 2019-09-24 | 杭州三花研究院有限公司 | Fluid switching device and heat management system |
| CN110397761A (en) * | 2019-07-31 | 2019-11-01 | 浙江锦佳汽车零部件有限公司 | Urea pump assembly solenoid directional control valve |
-
1994
- 1994-07-13 CN CN 94217324 patent/CN2197500Y/en not_active Revoked
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1932352B (en) * | 2005-09-15 | 2011-05-04 | 株式会社鹭宫制作所 | Fluid switching valve |
| CN100590324C (en) * | 2006-10-16 | 2010-02-17 | 太原理工大学 | Guide proportion directional throttle valve |
| CN102588627A (en) * | 2011-01-06 | 2012-07-18 | 浙江三花制冷集团有限公司 | Air-conditioning reversing valve and air-conditioning system |
| CN102588627B (en) * | 2011-01-06 | 2015-08-05 | 浙江三花制冷集团有限公司 | A kind of air conditioning reversing valve and air-conditioning system |
| US9528616B2 (en) | 2013-08-28 | 2016-12-27 | Smc Corporation | Five-port switching valve with residual pressure exhaust valve |
| CN105972879A (en) * | 2016-07-05 | 2016-09-28 | 安徽天大电子科技股份有限公司 | Electromagnetic four-way reversing valve |
| CN110274053A (en) * | 2018-03-13 | 2019-09-24 | 杭州三花研究院有限公司 | Fluid switching device and heat management system |
| CN110274053B (en) * | 2018-03-13 | 2021-12-14 | 三花控股集团有限公司 | Fluid switching device and thermal management system |
| CN110397761A (en) * | 2019-07-31 | 2019-11-01 | 浙江锦佳汽车零部件有限公司 | Urea pump assembly solenoid directional control valve |
| CN110397761B (en) * | 2019-07-31 | 2024-03-01 | 浙江锦佳汽车零部件有限公司 | Electromagnetic reversing valve of urea pump assembly |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101319726A (en) | Macrotype four-way reversing valve | |
| CN101294754A (en) | Multifunctional air conditioner heat pump | |
| CN2197500Y (en) | Four-way electromagnetic change valve | |
| CN2434494Y (en) | Four-way electromagnetic change valve | |
| CN107702370A (en) | A kind of air-conditioning six-way valve and include its heat pump type air conditioner | |
| CN206488508U (en) | Head phase-transition heat-storage frost removal type low-temperature air source heat pump unit | |
| CN101403543B (en) | Air conditioner heat pump | |
| CN103807936A (en) | Heat pump air-conditioner system | |
| CN2826306Y (en) | Refrigerating and heating air conditioner with thermostatic dehumidifying function | |
| CN110274053A (en) | Fluid switching device and heat management system | |
| KR100357112B1 (en) | Heat Pump and Control method of operating the heat pump | |
| CN111536603A (en) | Multifunctional temperature and humidity separately-controlled air conditioning system based on double-suction pressure compressor | |
| CN2442055Y (en) | Four-way electromagnetic change valve for direct current frequency conversion air conditioner | |
| CN101285632A (en) | Refrigerant flow direction converting device and its uses | |
| CN212692010U (en) | Reversing valve and double-evaporation-temperature air conditioning system | |
| CN108253669A (en) | Mostly logical reversing arrangement and air-conditioning system | |
| CN114877428B (en) | Multi-position reversing valve, air conditioning system and air conditioner | |
| CN2135087Y (en) | Four-way reversing valve for hot-pump air-conditioner | |
| CN201331218Y (en) | Air conditioning system with hot water making function | |
| CN202101464U (en) | Refrigeration device of air conditioner | |
| CN2506941Y (en) | Heat pump type air conditioner system | |
| CN214249792U (en) | Multi-split air conditioner | |
| CN216897884U (en) | Refrigerating system and refrigerating equipment | |
| CN109340919A (en) | Air conditioner | |
| JPS6312282Y2 (en) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C28 | Revocation of patent right or utility model | ||
| RW01 | Full revocation of patent right |