CN102252471A - Diaphragm-type thermostatic expansion valve - Google Patents
Diaphragm-type thermostatic expansion valve Download PDFInfo
- Publication number
- CN102252471A CN102252471A CN2011101939225A CN201110193922A CN102252471A CN 102252471 A CN102252471 A CN 102252471A CN 2011101939225 A CN2011101939225 A CN 2011101939225A CN 201110193922 A CN201110193922 A CN 201110193922A CN 102252471 A CN102252471 A CN 102252471A
- Authority
- CN
- China
- Prior art keywords
- diaphragm
- lug boss
- expansion valve
- heating power
- power expansion
- 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.)
- Granted
Links
Images
Landscapes
- Details Of Valves (AREA)
- Temperature-Responsive Valves (AREA)
Abstract
The invention relates to a diaphragm-type thermostatic expansion valve, which comprises a valve body (4) with an inlet passage and an outlet passage, and an air box is arranged at the upper end of the valve body, a valve core (5) and a transmission bar (16) are arranged in a cavity of the valve body (4), and a cavity of the air box is divided by a diaphragm (18); the diaphragm (18) is connected with the transmission bar (16) in a propping way through a transmission piece (17), and drives the transmission bar to enable the valve core to displace relative to a valve opening by sensing the pressure change in the air box, so as to adjust the flow quantity of fluid; a first bulge part is arranged on the circumferential part of the diaphragm (18), and a second bulge part (21) is also arranged at the axle center part of the diaphragm (18); and a cavity (20) used for accommodating the second bulge part is arranged at the central part of a shaft of the transmission piece (17). The diaphragm provided by the invention has longer service life and better stability, and at the same time, the service life of the expansion valve provided by the invention and the flow-quantity adjustment precision can be improved.
Description
Technical field
The invention belongs to refrigeration control field, relate to a kind of diaphragm type heating power expansion valve.
Background technology
Heating power expansion valve is the aperture size of coming control valve by the degree of superheat of evaporator outlet or compressor suction casing in the induction refrigeration system, thereby realizes the effect of system refrigerant Flow-rate adjustment and throttling step-down.Fig. 1 is traditional diaphragm type heating power expansion valve structure chart.As can be seen from the figure, traditional diaphragm type heating power expansion valve comprises valve body 4 and is arranged on the gas tank of valve body 4 upper ends, gas tank covers 1 gentle block 2 by gas tank and constitutes, its inner chamber is divided into two chambers up and down by diaphragm 18 '. on valve body 1, offer access road and exit passageway, inlet connection 3 is connected with access road is airtight, and discharge connection 15 is connected with exit passageway is airtight. between the access road of valve body 4 and exit passageway, also offer valve port.High-pressure fluid from condenser enters from inlet connection 3, after the throttling step-down from discharge connection 15 inflow evaporators.Be provided with valve hole part in the inner chamber of valve body 4, it comprises spool 5, passes through the supporting seat 14 of spring 7 butt spools 5 at the drive link 16 of upper end butt spool 5, in the lower end.Spring 7 is fixed on the adjustment seat 13 by spring base 8, can be by the initial stressed of adjustment seat 13 regulating spools 5.When the fluid detection pressure in the epicoele that is incorporated into gas tank by capillary 19 changed, diaphragm 18 ' deformed, and drove drive link 16 by driver blade 17 ', made spool with respect to described valve port displacement, to regulate the size of fluid flow.
Fig. 2 is the structure chart of diaphragm in the traditional diaphragm type heating power expansion valve.Diaphragm is provided with first lug boss 22 at its peripheral part, described first lug boss 22 is overlooked and is concentric ring-shaped, diaphragm places on the driver blade, make the upper surface of driver blade contact with the lower surface of diaphragm, in the heating power expansion valve course of work, diaphragm easy deformation, diaphragm deformation mainly are created near first lug boss 22 of peripheral part.Therefore, diaphragm is after long-time the use, and unexpected variation can take place performance, influences the life-span and the Flow-rate adjustment precision of heating power expansion valve.The problem that traditional diaphragm type heating power expansion valve exists is badly in need of being resolved.
Summary of the invention
The objective of the invention is to,, propose a kind of diaphragm type heating power expansion valve, make that the life-span of diaphragm is long in order to address the above problem, and good stability.
For achieving the above object, the present invention proposes a kind of diaphragm type heating power expansion valve, comprise that the upper end is provided with the valve body that has access road and exit passageway of gas tank, be provided with spool and drive link in the inner chamber of described valve body, the inner chamber of described gas tank is separated by diaphragm, described diaphragm is by driver blade and drive link butt, and the variation by the described gas tank fluid pressure of perception, driving drive link makes spool with respect to the valve port displacement, to regulate the size of fluid flow, it is characterized in that, when the peripheral part of described diaphragm is provided with first lug boss, also be provided with second lug boss at its axis part, the axle centre of described driver blade is provided with the container cavity of described second lug boss.
Further, as the diaphragm type heating power expansion valve of above-mentioned structure, described first lug boss is annular, and described second lug boss is rounded.
Particularly, the container cavity of second lug boss of described driver blade is the clear opening structure;
Particularly, the container cavity of second lug boss of described driver blade is a counter bore structure;
Preferably. the container cavity of second lug boss of described driver blade comprises cavity portion and guide part;
Preferably. the round diameter of described second lug boss is a circular diameter in the annular of described first lug boss
Extremely
Doubly.
Preferably. the height of projection of described second lug boss is the height of projection of described first lug boss
Between 1 times.
Preferably. the bore dia of the container cavity of described second lug boss is than the big 2--3 millimeter of circular diameter of described first lug boss.
Further, between first lug boss of described diaphragm and second lug boss, also be provided with the 3rd lug boss.
The invention has the advantages that, diaphragm at heating power expansion valve increases projection, make in using the heating power expansion valve process, the diaphragm deformation of described expansion valve mainly is created near the edge of lug boss and near the edge of intermediate projections portion, the position of distortion increases to some extent than existing structure, thereby make the longer service life of diaphragm, stability better, the service life of finally having improved heating power expansion valve.In addition, the heating power expansion valve of the technical program in use, variation by the described gas tank fluid pressure of perception, drive drive link make spool regulate with respect to the valve port displacement the traditional heating power expansion valve of the ratio of precision of fluid flow Flow-rate adjustment precision height 62%, the employed heating power expansion valve of equipment that needing to be particularly suitable for frequently opening, refrigerating capacity is little.
Description of drawings
Fig. 1 is traditional diaphragm type heating power expansion valve structural representation;
Fig. 2 is the structural representation of diaphragm in the traditional diaphragm type heating power expansion valve;
Fig. 3 is a diaphragm type heating power expansion valve structural representation of the present invention;
Fig. 4 is the structural representation of one of diaphragm in the diaphragm type heating power expansion valve of the present invention;
Fig. 5 is two a structural representation of diaphragm in the diaphragm type heating power expansion valve of the present invention;
Fig. 6 is the structural representation of one of driver blade in the diaphragm type heating power expansion valve of the present invention;
Fig. 7 is two a structural representation of driver blade in the diaphragm type heating power expansion valve of the present invention.
Accompanying drawing indicates:
1-gas tank lid, 2-gas tank seat, 3-inlet connection, 4-valve body, 5-spool, the 6-guide ring, 7-spring, 8-spring base, 9-adjusting rod, the 10-jump ring, 11-bonnet, 12-sealing ring, 13-adjustment seat, the 14-supporting seat, 15-discharge connection, 16-drive link, 17/17 '/17A-driver blade, 18/18 '/18A-diaphragm, 19-capillary, 20-container cavity, 21-second lug boss, 22-first lug boss, 23-the 3rd lug boss, 24-cavity portion, 25-guide part.
The specific embodiment
The present invention is described in further detail below in conjunction with Figure of description and specific embodiment.
As shown in Figure 3, Fig. 3 is a diaphragm type heating power expansion valve structural representation of the present invention.The diaphragm type heating power expansion valve comprises valve body 4 and is arranged on the gas tank of valve body 4 upper ends, gas tank covers 1 gentle block 2 by gas tank and constitutes, upper chamber, lower chambers are separated, are divided into to its inner chamber by diaphragm 18, on valve body 1, offer access road and exit passageway, inlet connection 3 is connected with access road is airtight, and discharge connection 15 is connected with exit passageway is airtight.Between the access road of valve body 4 and exit passageway, also offer valve port, in the inner chamber of valve body 4, be provided with valve hole part, valve hole part comprise spool 5, the drive link 16 of upper end butt spool 5, in the lower end by the supporting seat 14 of spring 7 butt spools 5.Spring 7 is fixed on the adjustment seat 13 by spring base 8, can be by the initial stressed of adjustment seat 13 regulating spools 5.When the fluid detection pressure in the epicoele that is incorporated into gas tank by capillary 19 changed, diaphragm 18 deformed, and drove drive link 16 by driver blade 17, made spool 5 with respect to described valve port displacement, to regulate the size of fluid flow.
Fig. 4 is the structural representation of one of diaphragm in the diaphragm type heating power expansion valve of the present invention.As shown in Figure 4, diaphragm 18 is provided with first lug boss 22 at its peripheral part, and described first lug boss 22 can raise up, also can be to lower convexity, and when first lug boss 22 raised up, gas tank covered 1 corresponding position corresponding grooves is set.Described first lug boss 22 is overlooked and is concentric ring-shaped, and the interior circular diameter of donut is Φ A, and the outside diameter of donut is Φ B.Axis part at diaphragm 18 also is provided with second lug boss 21.In the present embodiment, second lug boss, 21 plan view shapes are circular, and its diameter is Φ D.
Fig. 6 is the structural representation of one of driver blade in the diaphragm type heating power expansion valve of the present invention.As shown in Figure 6.Driver blade 17 centers are provided with through hole, and described through hole is as the container cavity 20 of diaphragm 18 second lug bosses 21, and container cavity 20 comprises cavity portion 24 and the guide part that is connected with cavity portion 24 and make progress the enlarging shape.
Described container cavity 20 had both avoided second lug boss, 21 edges of diaphragm 18 and driver blade 17 to produce interference, can play the certain support and the transfer function of power to diaphragm 18 again.
On diaphragm 18, set up second lug boss 21, both avoided diaphragm 18 distortion too concentrated, make the longer service life of diaphragm 18, stability better, can improve the service life and the Flow-rate adjustment precision of heating power expansion valve again.As preferred version, Φ D is set between 1/7 and 1/10 times of Φ A; The height of projection h of second lug boss 21 of diaphragm 18 is the height of projection H of first lug boss 22
Between 1 times, between the big 2mm～3mm of diameter of phi D of the diameter of phi E of accommodation section 20 than second lug boss 21, effect is better, empirical tests, and the life-span of diaphragm can prolong more than 5%.(replenishing the number range of Φ A, Φ D and Φ E)
Fig. 5 is two a structural representation of diaphragm in the diaphragm type heating power expansion valve of the present invention, and Fig. 7 is two a structural representation of driver blade in the diaphragm type heating power expansion valve of the present invention.As Fig. 5 and shown in Figure 7.Be provided with at diaphragm 18A on the basis of first lug boss 22 and second lug boss 21, can the 3rd belt lug boss 23 be set between first lug boss 22 and second lug boss 21, the stressed distribution of diaphragm 18 is improved.The container cavity of driver blade 17A can be arranged to counter bore structure simultaneously.
Need to prove that at last above embodiment is only unrestricted in order to technical scheme of the present invention to be described.Although the present invention is had been described in detail with reference to embodiment; those of ordinary skill in the art is to be understood that; technical scheme of the present invention is made amendment or is equal to replacement; the design and the scope that do not break away from technical solution of the present invention, it all should be encompassed in the claim protection domain of the present invention.
Claims (9)
1. a diaphragm type heating power expansion valve comprises that the upper end is provided with the valve body that has access road and exit passageway (4) of gas tank, is provided with spool (5) and drive link (16) in the inner chamber of described valve body (4), and the inner chamber of described gas tank is separated by diaphragm (18); Described diaphragm (18) is by driver blade (17) and drive link (16) butt, and the variation by the described gas tank fluid pressure of perception, driving drive link makes spool with respect to the valve port displacement, to regulate the size of fluid flow, it is characterized in that, when the peripheral part of described diaphragm (18) is provided with first lug boss (22), axis part at described diaphragm (18) also is provided with second lug boss (21), and the axle centre of described driver blade (17) is provided with the container cavity (20) of described second lug boss.
2. diaphragm type heating power expansion valve according to claim 1 is characterized in that, described first projection (22) portion is the concentric circles annular, and described second lug boss (21) is rounded.
3. diaphragm type heating power expansion valve according to claim 2 is characterized in that, the container cavity (20) of described second lug boss (21) is the clear opening structure.
4. diaphragm type heating power expansion valve according to claim 2 is characterized in that, the container cavity (20) of described second lug boss (21) is a counter bore structure.
5. diaphragm type heating power expansion valve according to claim 2 is characterized in that, the container cavity (20) of described second lug boss (21) comprises cavity portion (24) and guide part (25).
6. according to the described arbitrary diaphragm type heating power expansion valve of claim 2-5, it is characterized in that the round diameter of described second lug boss (21) is a circular diameter in the annular of described first lug boss
Extremely
Doubly.
7. according to the described arbitrary diaphragm type heating power expansion valve of claim 2-5, it is characterized in that the height of projection of described second lug boss (21) is the height of projection of described first lug boss (22)
Between 1 times.
8. according to the described diaphragm type heating power expansion valve of claim 3-5, it is characterized in that the diameter in the hole of described container cavity (20) is than the big 2--3 millimeter of diameter of a circle of described first lug boss (21).
9. according to the described diaphragm type heating power expansion valve of claim 1-5, it is characterized in that, between first lug boss (22) of described diaphragm (18) and second lug boss (21), the 3rd lug boss (23) is set also.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110193922 CN102252471B (en) | 2011-07-11 | 2011-07-11 | Diaphragm-type thermostatic expansion valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110193922 CN102252471B (en) | 2011-07-11 | 2011-07-11 | Diaphragm-type thermostatic expansion valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102252471A true CN102252471A (en) | 2011-11-23 |
| CN102252471B CN102252471B (en) | 2013-05-29 |
Family
ID=44979901
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110193922 Active CN102252471B (en) | 2011-07-11 | 2011-07-11 | Diaphragm-type thermostatic expansion valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102252471B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103245141A (en) * | 2013-05-28 | 2013-08-14 | 浙江三花股份有限公司 | Thermal expansion valve and assembling method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000310461A (en) * | 1999-04-26 | 2000-11-07 | Denso Corp | Thermostatic refrigerant expansion valve |
| CN2494961Y (en) * | 2001-09-24 | 2002-06-12 | 邓永林 | External balance internal temperature-sensing thermal expansion valve |
| JP2005114303A (en) * | 2003-10-10 | 2005-04-28 | Calsonic Kansei Corp | Expansion valve |
| JP2006266568A (en) * | 2005-03-23 | 2006-10-05 | Tgk Co Ltd | Expansion valve |
| CN201851747U (en) * | 2010-09-03 | 2011-06-01 | 浙江敏特汽车空调有限公司 | Brazing sealing structure for power head cover, diaphragm and valve body of expansion valve |
-
2011
- 2011-07-11 CN CN 201110193922 patent/CN102252471B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000310461A (en) * | 1999-04-26 | 2000-11-07 | Denso Corp | Thermostatic refrigerant expansion valve |
| CN2494961Y (en) * | 2001-09-24 | 2002-06-12 | 邓永林 | External balance internal temperature-sensing thermal expansion valve |
| JP2005114303A (en) * | 2003-10-10 | 2005-04-28 | Calsonic Kansei Corp | Expansion valve |
| JP2006266568A (en) * | 2005-03-23 | 2006-10-05 | Tgk Co Ltd | Expansion valve |
| CN201851747U (en) * | 2010-09-03 | 2011-06-01 | 浙江敏特汽车空调有限公司 | Brazing sealing structure for power head cover, diaphragm and valve body of expansion valve |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103245141A (en) * | 2013-05-28 | 2013-08-14 | 浙江三花股份有限公司 | Thermal expansion valve and assembling method |
| CN103245141B (en) * | 2013-05-28 | 2016-04-27 | 浙江三花制冷集团有限公司 | A kind of heating power expansion valve and assembly method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102252471B (en) | 2013-05-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203962320U (en) | External rotor rotary compressor | |
| CN102466377B (en) | Expansion valve | |
| EP2725268B1 (en) | Flow control valve | |
| CN105805218B (en) | A kind of Kind of MR Hydraulic Actuator damps controllable damper | |
| CN101294568A (en) | Rotary compressor with air injection enthalpy-increasing function | |
| CN203869389U (en) | Short-pipe throttle valve and air conditioner | |
| CN102252471B (en) | Diaphragm-type thermostatic expansion valve | |
| CN106468372B (en) | Control valve | |
| CN107289684B (en) | Thermostatic expansion valve and air conditioning system with same | |
| CN104279163A (en) | Rotary compressor | |
| CN103411357B (en) | Air-condition bidirectional throttle valve with three-time throttling and vibration damping function | |
| CN102589207A (en) | Refrigeration system and thermostatic expansion valve thereof | |
| CN207004822U (en) | Compression mechanism and refrigeration plant | |
| CN101788064A (en) | Valve | |
| CN103673428A (en) | Combination valve | |
| CN103245141B (en) | A kind of heating power expansion valve and assembly method thereof | |
| CN201025261Y (en) | Rotary compressor with gas spraying and enthalpy addition function | |
| CN206369377U (en) | Reservoir and compressor assembly, refrigerating plant with it | |
| JP2001012824A (en) | Control valve | |
| CN206362029U (en) | Internal balance type heating power expansion valve | |
| CN106440567A (en) | Inner balance type thermal expansion valve | |
| CN208382644U (en) | A kind of vibration and noise reducing expansion valve of automobile air conditioner structure | |
| CN202835927U (en) | Compressor system | |
| CN104748457B (en) | A kind of heating power expansion valve and its core assembly | |
| CN204239264U (en) | Rotary compressor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170302 Address after: 312500 Zhejiang city of Shaoxing province Xinchang County Chengguan town of Liquan Patentee after: ZHEJIANG SANHUA CLIMATE AND APPLIANCE CONTROLS GROUP Co.,Ltd. Address before: 312500 Xinchang, Zhejiang province Qixing street under the village of Liquan Patentee before: ZHEJIANG SANHUA Co.,Ltd. |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20220818 Address after: 312500 Daming new area, Zhejiang Xinchang Economic Development Zone, Xinchang County, Shaoxing City, Zhejiang Province Patentee after: Zhejiang Sanhua Commercial Refrigeration Co.,Ltd. Address before: Xia Li Quan, Chengguan Town, Xinchang County, Shaoxing City, Zhejiang Province Patentee before: ZHEJIANG SANHUA CLIMATE AND APPLIANCE CONTROLS GROUP Co.,Ltd. |
|
| TR01 | Transfer of patent right |