CN103411357B - Air-condition bidirectional throttle valve with three-time throttling and vibration damping function - Google Patents
Air-condition bidirectional throttle valve with three-time throttling and vibration damping function Download PDFInfo
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- CN103411357B CN103411357B CN201310384026.6A CN201310384026A CN103411357B CN 103411357 B CN103411357 B CN 103411357B CN 201310384026 A CN201310384026 A CN 201310384026A CN 103411357 B CN103411357 B CN 103411357B
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- membrane cover
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Abstract
The invention discloses an air-condition bidirectional throttle valve with a three-time throttling and vibration damping function. A sealed steel ball is installed in a central hole of an upper membrane cover which is located at the top end of the valve; a membrane is installed between the upper membrane cover and a lower membrane cover; a transmission block is installed below the membrane and is fixed to the valve body through a transmission block positioning round plate; a transmission rod, the upper end of which penetrates the transmission block positioning round plate and is connected to a groove of the transmission block, is installed at the central position of the valve body; the lower end of the transmission rod penetrates a liquid outlet and is connected to a tapered valve core; an adjusting spring is connected below the tapered valve core; a ball pad is connected below the adjusting spring; the ball pad is connected to an adjusting seat through three steel balls which are distributed uniformly at left and right. The air-condition bidirectional throttle valve with the three-time throttling and vibration damping function overcomes the problem that the refrigeration capability is balanced difficultly during the bidirectional flow by adding each single-throttling channel at the two ends of the valve opening of the throttle valve, reduces resonant interaction by changing partial structure of the valve core, and overcomes the problems of blockage of an air flow channel, reduced flow area and insufficient temperature induction of an air box head when the valve works in a state of relatively big open degree by changing partial structure of the transmission block.
Description
Technical field
The present invention relates to air-conditioning refrigerant throttling control valve, especially relate to the air-conditioning bidirectional choke valve of three throttlings of a kind of band and vibration-damping function.
Background technology
Throttle mechanism and compressor, condenser, evaporimeter be called " the four large parts " of refrigeration system in refrigeration systems, it is one of requisite element in refrigeration system, play a part reducing pressure by regulating flow, directly control the flow of evaporator refrigerant and the degree of superheat of evaporator outlet.In existing throttle mechanism use procedure for once or second throttle, refrigerating capacity balance when being difficult to realize two-way flow, after regulating, flowed fluctuation is larger, and antijamming capability is more weak, phenomenons such as " uttering long and high-pitched sounds " that in use procedure, frequent appearance causes because of choke valve internal resonance, larger once valve opening in adjustment process, drive block contacts with lower membrane cover and circulation passage will be caused to be reduced even block, and diaphragm cannot experience the temperature of reflux gas in time.Therefore design invention fluid passage three throttlings, improve drive block structure and guarantee gas flow area and choke valve with certain vibration-damping function meets the constantly perfect effective way of refrigeration system.
Summary of the invention
In order to improve restriction effect and the structural stability of air-conditioning refrigerant choke valve, the object of the present invention is to provide the air-conditioning bidirectional choke valve of three throttlings of a kind of band and vibration-damping function.
The technical solution used in the present invention is:
In the upper membrane cover centre bore on this valve top, sealed steel ball is installed, between upper membrane cover and lower membrane cover, diaphragm is installed, below diaphragm, drive block is installed, drive block is connected in lower membrane cover by drive block location plectane, the first gap is formed between the face, large bottom of drive block and lower membrane cover shoulder, the small end bottom surface of drive block and drive block are located between plectane and are formed the second gap, the height in the second gap need be less than the first gap, the annular in-flanges upper valve body upper left side that drive block location plectane bottom surface is supported on valve body has air inlet, valve body lower left side has liquid outlet, valve body upper right side has gas outlet, valve body lower right side has inlet, between gas outlet and inlet, locating hole is had on the right side of valve body, one O type circle is installed between valve body top and lower membrane cover lower port, drive link is installed in valve body center, drive link upper end is connected to drive block through drive block location plectane, drive link is connected catch below air inlet with position, gas outlet, below catch, the 2nd O type circle is installed, drive link lower end is connected in the recess of taper valve core through liquid outlet, regulating spring is connected below taper valve core, circular ball pad is connected below regulating spring, ball pad is connected in adjustment seat by about three equally distributed steel balls, adjustment seat is positioned at valve body bottom.
Be first segment discharge orifice between described liquid outlet and drive link, taper valve core is the adjustable second section discharge orifice of aperture by the passage of taper seat and valve body cone valve interruption-forming, has the 3rd throttle orifice between inlet and taper valve core.
The annulus that the large end of described drive block has more small end part is opened inside and outside two circles, often circle have 6 equally distributed holes, the end diameter of drive block is less than 1/2 of lower membrane cover diameter of bore, small end center has the first groove of positioning transmission bar, the second groove is had below first groove, first groove diameter is less than the second groove, plectane center, drive block location is drive link through hole, drive link is connected with the first described groove through drive link through hole, and drive block locates that plectane is same circumferentially has equally distributed six openings.
The beneficial effect that the present invention has is:
1) the present invention respectively increases a throttling passage at the adjustable valve port two ends of fluid passage, realize three throttlings, valve port is allowed to be operated in low voltage difference environment, when regulating for two-way circulating, the pressure reduction difference of forward and reverse two kinds of situation lower valve ports is little, overcome the problem of refrigerating capacity balance when being difficult to realize two-way flow, therefore this choke valve is applicable to the occasion needing refrigerant two-way flow.
2) improve spool part-structure, add steel ball and fix, reduce spring frictional force when regulating, be beneficial to the job stability of whole valve, reduce resonance interference.
3) drive block part-structure is improved, the end diameter of drive block is less than 1/2 of lower membrane cover inside diameter, drive block outside diameter is also less than 1/2 of diaphragm diameter, due to the existence in the first gap and the second gap, and the height in the second gap is less than the first gap, therefore maximum valve opening situation small end contacts with drive block location plectane, and the upper membrane cover contact of discord, and multiple opening is had on drive block and drive block location plectane, be beneficial to the circulation area of enlargement gas to diaphragm like this, ensure that diaphragm temperature-sensitive is more abundant.
Accompanying drawing explanation
Fig. 1 is internal structure schematic diagram of the present invention.
Fig. 2 is three throttle structure schematic diagrames of the present invention.
Fig. 3 is drive block top view of the present invention.
Fig. 4 is drive block sectional view of the present invention.
Fig. 5 is drive block of the present invention location plectane top view.
Fig. 6 is adjustment seat steel ball structure schematic diagram of the present invention.
In figure: 1. sealed steel ball, 2. go up membrane cover, 3. descend membrane cover, 4. diaphragm, 5. drive block, 6. drive block location plectane, 7. an O type circle, 8. valve body, 9. air inlet, 10. gas outlet, 11. liquid outlets, 12. inlets, 13. locating holes, 14. drive links, 15. catch, 16. the 2nd O type circles, 17. taper valve cores, 18. regulating springs, 19. ball pads, 20. steel balls, 21. adjustment seats, 22. the 3rd O type circles, 23. first segment discharge orifices, 24, second section discharge orifice, 25. the 3rd throttle orifices, 26. drive link through holes, 27. openings, 28. first gaps, 29. second gaps, 30. hold greatly, 31. small ends, 32. first grooves, 33. second grooves, 34. holes, 35. annular in-flanges.
Detailed description of the invention
Below in conjunction with drawings and Examples, the invention will be further described.
As Fig. 1, shown in Fig. 6, in upper membrane cover 2 centre bore on this valve top of the present invention, sealed steel ball 1 is installed, between upper membrane cover 2 and lower membrane cover 3, diaphragm 4 is installed, drive block 5 is installed below diaphragm 4, drive block 5 is connected in lower membrane cover 3 by drive block location plectane 6, the first gap 28 is formed between large end 30 bottom surface of drive block 5 and lower membrane cover 3 shoulder, small end 31 bottom surface of drive block 5 and drive block are located between plectane 6 and are formed the second gap 29, the height in the second gap 29 need be less than the first gap 28, drive block location plectane 6 bottom surface is supported on the annular in-flanges 35 of valve body 8, valve body 8 upper left side has air inlet 9, valve body 8 lower left side has liquid outlet 11, valve body 8 upper right side has gas outlet 10, valve body 8 lower right side has inlet 12, be positioned on the right side of valve body 8 between gas outlet (10) and inlet 12 and have locating hole 13, one O type circle 7 is installed between valve body 8 top and lower membrane cover 3 lower port, drive link 14 is installed in valve body 8 center, drive link 14 upper end is connected to drive block 5 through drive block location plectane 6, drive link 14 is connected catch 15 below air inlet 9 with position, gas outlet 10, below catch 15, the 2nd O type circle 16 is installed, drive link 14 lower end is connected in the recess of taper valve core 17 through liquid outlet 11, regulating spring 18 is connected below taper valve core 17, circular ball pad 19 is connected below regulating spring 18, ball pad 19 is connected in adjustment seat 21 by about three equally distributed steel balls 20, adjustment seat 21 is positioned at valve body 8 bottom.
As shown in Figure 2, be first segment discharge orifice 23 between described liquid outlet 11 and drive link 14, taper valve core 17 is the adjustable second section discharge orifice 24 of aperture by the passage of taper seat and valve body 8 cone valve interruption-forming, the 3rd throttle orifice 25 is had between inlet 12 and taper valve core 17, carry out repeatedly throttling through first segment discharge orifice 23, second section discharge orifice 24, the 3rd throttle orifice 25 3 throttle orifices, reach throttling and damping requirements.
As Fig. 3, Fig. 4, shown in Fig. 5, the annulus that the large end 30 of described drive block 5 has more small end 31 part inside and outside two circles have been opened, often circle has 6 equally distributed holes 34, for diaphragm 4 provides reflux gas passage, small end 31 diameter of drive block 5 is less than 1/2 of lower membrane cover 3 diameter of bore, small end 31 center has the first groove 32 of positioning transmission bar 14, the second groove 33 is had below first groove 32, first groove 32 diameter is less than the second groove 33, plectane 6 center, drive block location is drive link through hole 26, drive link 14 is connected with the first described groove 32 through drive link through hole 26, plectane 6 is same circumferentially has equally distributed six openings 27 in drive block location, six openings 27 guarantee that reflux gas can flow to drive block.
Operation principle of the present invention is as follows:
This valve is when normally working, liquid refrigerant flows to liquid outlet 11 from inlet 12, liquid outlet 11 is connected on A/C evaporator, cold-producing medium gets back to again air inlet 9 by evaporimeter, air inlet 9 and gas outlet 10 communicate, gas outlet 10 connects compressor of air conditioner, cold-producing medium is by getting back to inlet 12 after compressor and condenser, periodic duty like this, after cold-producing medium flows into inlet 12, enter in the cavity at taper valve core 17 place after the 3rd throttle orifice 25 first time throttling action, second time throttling is carried out again from second section discharge orifice 24, second time throttling action regulates throttling action size by the adjustment seat 21 bottom regulation valve body 8, third time throttling is carried out followed by first segment discharge orifice 23, after three throttlings, the refrigerant flow of whole circulation tends towards stability, obvious fluctuation can not be produced, after first segment discharge orifice 23 throttling, cold-producing medium flows out to A/C evaporator from liquid outlet 11, the cold-producing medium of coming in from air inlet 9 enters into air tank head by the opening 27 of drive block location plectane 6, masterpiece is used on diaphragm 4, air tank head itself is subject to ambient temperature impact can produce a downward power, the power upwards that the cold-producing medium that this downward power and air inlet 9 are come in produces interacts, the pressure differential of two power is final or downward, this downward power acts on drive block 5 by diaphragm 4, power is transferred to again on drive link 14 by drive block 5, drive link 14 the most at last masterpiece is used on taper valve core 17, taper valve core 17 changes the size of second section discharge orifice 24, thus regulate the flow of cold-producing medium, the active force of regulating spring 18 is subject to below taper valve core 17, about three equally distributed steel balls 20 are arranged between ball pad 19 and adjustment seat 21, can rotate when adjustment seat 21 regulates and drive regulating spring 18 to rotate, when not installing steel ball 20 also can there is clockwise or counterclockwise deformation in regulating spring 18 while upper and lower deformation, after three steel balls 20 have been installed, frictional force between adjustment seat 21 and regulating spring 18 is transferred on steel ball 20, steel ball 20 rotation can offset frictional force between adjustment seat 21 and regulating spring 18, regulating spring 18 can not clockwise or counterclockwise deformation while upper and lower deformation, in addition in the whole course of work, drive block location plectane 6 is because the size designed, even if valve port standard-sized sheet, drive block location plectane 6 also can not touch lower membrane cover 3, avoid the problem that valve port in high temperature environments can not fully be opened, in addition drive block location plectane 6 and drive block 5 all have multiple aperture, can ensure that flow of refrigerant is clear and coherent smooth, atmospheric pressure fully acts on diaphragm 4.
Claims (3)
1. the air-conditioning bidirectional choke valve of a band three throttlings and vibration-damping function, it is characterized in that: in upper membrane cover (2) centre bore on this valve top, sealed steel ball (1) is installed, diaphragm (4) is installed between upper membrane cover (2) and lower membrane cover (3), drive block (5) is installed in diaphragm (4) below, drive block (5) is located plectane (6) by drive block and is connected in lower membrane cover (3), the first gap (28) is formed between large end (30) bottom surface of drive block (5) and lower membrane cover (3) shoulder, small end (31) bottom surface of drive block (5) and drive block are located between plectane (6) and are formed the second gap (29), the height in the second gap (29) need be less than the first gap (28), drive block location plectane (6) bottom surface is supported on the annular in-flanges (35) of valve body (8), valve body (8) upper left side has air inlet (9), valve body (8) lower left side has liquid outlet (11), valve body (8) upper right side has gas outlet (10), valve body (8) lower right side has inlet (12), valve body (8) right side is positioned between gas outlet (10) and inlet (12) and has locating hole (13), one O type circle (7) is installed between valve body (8) top and lower membrane cover (3) lower port, drive link (14) is installed in valve body (8) center, drive link (14) upper end is connected to drive block (5) through drive block location plectane (6), drive link (14) is connected catch (15) near air inlet (9) with below gas outlet (10) position, the 2nd O type circle (16) is installed in catch (15) below, drive link (14) lower end is connected in the recess of taper valve core (17) through liquid outlet (11), taper valve core (17) below connects regulating spring (18), regulating spring (18) below connects circular ball pad (19), ball pad (19) is connected in adjustment seat (21) by three equally distributed steel balls (20), adjustment seat (21) is positioned at valve body (8) bottom.
2. the air-conditioning bidirectional choke valve of a kind of band according to claim 1 three throttlings and vibration-damping function, it is characterized in that: be first segment discharge orifice (23) between described liquid outlet (11) and drive link (14), taper valve core (17) is the adjustable second section discharge orifice (24) of aperture by the passage of taper seat and valve body (8) cone valve interruption-forming, has the 3rd throttle orifice (25) between inlet (12) and taper valve core (17).
3. the air-conditioning bidirectional choke valve of a kind of band according to claim 1 three throttlings and vibration-damping function, it is characterized in that: the large end (30) of described drive block (5) has more on small end (31) annulus has partly opened inside and outside two circles, often circle has 6 equally distributed holes (34), small end (31) diameter of drive block (5) is less than 1/2 of lower membrane cover (3) diameter of bore, small end (31) center has first groove (32) of positioning transmission bar (14), first groove (32) below has the second groove (33), first groove (32) diameter is less than the second groove (33), plectane (6) center, drive block location is drive link through hole (26), drive link (14) is connected with described the first groove (32) through drive link through hole (26), drive block location plectane (6) is same circumferentially has equally distributed six openings (27).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310384026.6A CN103411357B (en) | 2013-08-29 | 2013-08-29 | Air-condition bidirectional throttle valve with three-time throttling and vibration damping function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310384026.6A CN103411357B (en) | 2013-08-29 | 2013-08-29 | Air-condition bidirectional throttle valve with three-time throttling and vibration damping function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103411357A CN103411357A (en) | 2013-11-27 |
| CN103411357B true CN103411357B (en) | 2015-05-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310384026.6A Expired - Fee Related CN103411357B (en) | 2013-08-29 | 2013-08-29 | Air-condition bidirectional throttle valve with three-time throttling and vibration damping function |
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| Country | Link |
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| CN (1) | CN103411357B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104307762B (en) * | 2014-09-24 | 2016-09-14 | 中国计量学院 | Air-conditioner throttling valve sorting assembling device |
| EP3611445A4 (en) * | 2017-04-13 | 2021-01-13 | Zhejiang Sanhua Automotive Components Co., Ltd. | Thermal expansion valve |
| CN110966426B (en) * | 2018-09-30 | 2022-08-26 | 浙江三花汽车零部件有限公司 | Expansion valve |
| CN109826997B (en) * | 2019-03-26 | 2023-09-22 | 无锡凯尔克仪表阀门有限公司 | Throttling structure for nozzle baffle type positioner |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100404925C (en) * | 2004-05-17 | 2008-07-23 | 株式会社不二工机 | Expansion valve |
| CN100547274C (en) * | 2006-08-29 | 2009-10-07 | 浙江春晖智能控制股份有限公司 | Secondary throttling bidirectional thermal expansion valve |
| CN101852307B (en) * | 2009-03-30 | 2011-09-28 | 浙江春晖智能控制股份有限公司 | Thermostatic expansion valve |
| KR101077691B1 (en) * | 2010-04-15 | 2011-10-27 | 주식회사 두원전자 | Expansion valve for an air-conditioner of a vehicle |
| JP2013148284A (en) * | 2012-01-20 | 2013-08-01 | Mitsubishi Electric Corp | Throttle device and air conditioning device provided with the same |
| CN203454487U (en) * | 2013-08-29 | 2014-02-26 | 中国计量学院 | Air-condition bidirectional throttle valve with three-time throttling and vibration damping function |
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2013
- 2013-08-29 CN CN201310384026.6A patent/CN103411357B/en not_active Expired - Fee Related
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| CN103411357A (en) | 2013-11-27 |
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Granted publication date: 20150520 Termination date: 20160829 |