CN216742912U - Electronic expansion valve - Google Patents
Electronic expansion valve Download PDFInfo
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- CN216742912U CN216742912U CN202220250108.6U CN202220250108U CN216742912U CN 216742912 U CN216742912 U CN 216742912U CN 202220250108 U CN202220250108 U CN 202220250108U CN 216742912 U CN216742912 U CN 216742912U
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- valve
- sealing
- electronic expansion
- sealing gasket
- needle
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Abstract
The utility model provides an electronic expansion valve, comprising: a valve seat member; the large sealing gasket is arranged in the cavity of the valve seat component and is provided with a large valve port; a reinforcing seal disposed between the large seal and the inner wall of the valve seat member; the valve needle component is arranged in the cavity of the valve seat component and comprises a large valve needle part which is used for being matched with the large sealing gasket to open and close the large valve port. The large sealing gasket is easy to deform after being used for a long time, so that the leakage phenomenon can occur between the assembled large sealing gasket and the inner wall of the valve seat component. In this solution, a large valve needle portion is provided for opening or closing the large valve port in cooperation with the large gasket.
Description
Technical Field
The utility model relates to the technical field of electronic expansion valves, in particular to an electronic expansion valve.
Background
In the past, in various cooling and heating apparatuses such as air conditioners, refrigerators, heat pump water heaters, and the like, an electronic expansion valve is generally used to adjust the flow rate of a fluid. The electronic expansion valve generally comprises a valve seat component, a valve needle component, a large sealing gasket and the like, wherein the large sealing gasket is provided with a valve port, and the opening degree of the valve port is adjusted through the movement of the valve needle component to realize circulation control. In the electronic expansion valve in the prior art, a sealing gasket is usually adopted for sealing a valve port, and the sealing gasket is easy to deform after long-term use, so that the sealing effect of the valve port is poor, and the problem of fluid leakage is easy to occur.
SUMMERY OF THE UTILITY MODEL
The utility model provides an electronic expansion valve, which aims to solve the problem of poor sealing effect of the electronic expansion valve in the prior art.
In order to solve the above problems, the present invention provides an electronic expansion valve, comprising: a valve seat member; the large sealing gasket is arranged in the cavity of the valve seat component and is provided with a large valve port; a reinforcing seal disposed between the large packing and the inner wall of the valve seat member; the valve needle component is arranged in the cavity of the valve seat component and comprises a large valve needle part which is used for being matched with the large sealing gasket to open and close the large valve port.
Furthermore, the outer side of the large sealing gasket is provided with a first annular step, the reinforcing sealing element is arranged in the first annular step, and the reinforcing sealing element is abutted against the inner side surface and the bottom surface of the cavity of the valve seat component; or the outer side of the large sealing gasket is provided with an annular groove, the reinforcing sealing element is arranged in the annular groove, and the reinforcing sealing element is abutted against the inner side surface of the cavity of the valve seat component.
Further, the electronic expansion valve further comprises a limiting structure arranged in the cavity of the valve seat component, and the limiting structure and one side, facing the large valve needle part, of the large sealing gasket are abutted to compress the large sealing gasket.
Further, limit structure includes interconnect's clamp ring and go-between, and clamp ring and the butt of big sealed pad, go-between are located one side that the clamp ring deviates from big sealed pad, and the inner wall welding of go-between and valve seat part.
Further, the outer side wall of the limiting structure towards one end of the large sealing gasket is provided with a chamfer or a fillet.
Furthermore, the outer side of the large sealing gasket is provided with a second annular step, and the limiting structure is in limiting fit with the second annular step.
Further, the large sealing gasket and the reinforcing sealing piece are both made of soft materials, and the outer diameter of the reinforcing sealing piece is larger than that of the large sealing gasket.
Furthermore, the end face of the large valve port is a sealing plane, and the large valve port is closed under the condition that one end of the large valve needle is abutted to the sealing plane.
Furthermore, big valve needle portion is hollow structure, and the tip of big valve needle portion has the sealed face that is used for sealing cooperation with big sealed pad, and sealed face is the arcwall face.
Further, the valve needle component also comprises a small valve needle, the large valve needle part is provided with a small valve port, the small valve port and the large valve port are coaxially arranged, and the small valve needle is movably arranged in the large valve needle part so as to adjust the opening degree of the small valve port.
The technical scheme of the utility model is applied to provide an electronic expansion valve, which comprises: a valve seat member; the large sealing gasket is arranged in the cavity of the valve seat component and is provided with a large valve port; a reinforcing seal disposed between the large seal and the inner wall of the valve seat member; the valve needle component is arranged in the cavity of the valve seat component and comprises a large valve needle part which is used for being matched with the large sealing gasket to open and close the large valve port. The large sealing gasket is easy to deform after being used for a long time, so that the leakage phenomenon can occur between the assembled large sealing gasket and the inner wall of the valve seat component. In this solution, a large valve needle portion is provided for opening or closing the large valve port in cooperation with the large gasket.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model. In the drawings:
fig. 1 shows a cross-sectional view of an electronic expansion valve provided by an embodiment of the present invention;
FIG. 2 shows a cross-sectional view of the valve seat member, large seal, reinforced seal and retaining structure of FIG. 1;
fig. 3 shows the exploded view of fig. 2.
Wherein the figures include the following reference numerals:
10. a valve seat member;
20. a large seal gasket; 21. a large valve port; 211. sealing the plane; 22. a first annular step; 23. a second annular step;
30. a reinforcing seal;
40. a valve needle component; 41. a large valve needle portion; 411. a sealing surface; 412. a small valve port; 42. a small valve needle;
50. a limiting structure; 51. a compression ring; 52. and (7) connecting rings.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the described embodiments are merely exemplary of the utility model, and not restrictive of the full scope of the utility model. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the utility model, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 to 3, an embodiment of the present invention provides an electronic expansion valve, including: a valve seat member 10; a large gasket 20 disposed within the cavity of the valve seat member 10, the large gasket 20 having a large valve opening 21; a reinforcing seal 30 provided between the large packing 20 and the inner wall of the valve seat member 10; and a needle member 40 disposed in the cavity of the valve seat member 10, the needle member 40 including a large needle portion 41, the large needle portion 41 being adapted to cooperate with the large packing 20 to open and close the large valve port 21.
Because the large sealing gasket 20 is easy to deform after being used for a long time, the leakage phenomenon can occur between the large sealing gasket 20 and the inner wall of the valve seat part 10 after assembly, and by adopting the scheme, the reinforcing sealing element 30 is arranged between the large sealing gasket 20 and the inner wall of the valve seat part 10, so that the sealing effect of the large valve port 21 is further improved, the fluid leakage is effectively avoided, and meanwhile, the service life of the electronic expansion valve is also prolonged. In this embodiment, a large valve needle portion 41 is provided for opening or closing the large valve port 21 in cooperation with the large packing 20. The electronic expansion valve can be installed in a mounting base or a valve body for use.
The outer side of the large gasket 20 has a first annular step 22, the reinforcing seal 30 is disposed in the first annular step 22, and the reinforcing seal 30 abuts against the inner side surface and the bottom surface of the cavity of the valve seat member 10. By providing the first annular step 22, placement of the reinforcing seal 30 is facilitated; the medial surface, the bottom surface that will strengthen sealing member 30 and valve seat part 10 cavity all butt, set up like this, can effectively guarantee the sealed effect of big sealed pad 20, prevented that big sealed pad 20 from using to take place the fluid with valve seat part 10 after the deformation for a long time and revealing.
Specifically, the electronic expansion valve further includes a limiting structure 50 disposed in the cavity of the valve seat member 10, and the limiting structure 50 abuts against a side of the large gasket 20 facing the large valve needle portion 41 to press the large gasket 20. Through setting up limit structure 50, and limit structure 50 and big sealed one side butt that fills up 20 towards big valve needle portion 41, can effectively compress tightly big sealed the pad 20 like this, ensure that big sealed pad 20 can not take place to drop.
Wherein, limit structure 50 includes interconnect's clamp ring 51 and go-between 52, and clamp ring 51 and big sealed 20 butt, go-between 52 are located the one side that clamp ring 51 deviates from big sealed 20, and the inner wall welding of go-between 52 and valve seat part 10. The pressing ring 51 is arranged to be convenient to abut against the large sealing gasket 20 so as to press the large sealing gasket 20; the connecting ring 52 is arranged on one side of the pressing ring 51 deviating from the large sealing gasket 20, so that the welding with the inner wall of the valve seat component 10 is facilitated, the large sealing gasket 20 is guaranteed not to fall off, meanwhile, the large sealing gasket 20 and the reinforcing sealing element 30 can be kept away, the phenomenon that the heat during welding is too high is prevented, and the large sealing gasket 20 and the reinforcing sealing element 30 deform due to heating is avoided.
In this embodiment, the outer side wall of the position-limiting structure 50 toward the end of the large packing 20 has a chamfer or rounded corner. By arranging the chamfer or fillet on the outer side wall of the limit structure 50 facing one end of the large sealing gasket 20, a guiding effect can be achieved during installation, the installation is convenient, and the limit structure 50 can be prevented from scratching the inner wall of the valve seat component 10 during installation.
Specifically, the outside of the large seal 20 has a second annular step 23, and the retainer 50 is in retaining engagement with the second annular step 23. By providing the second annular step 23, a limit fit with the limit structure 50 is facilitated to define a range of movement of the limit structure 50, wherein the clamp ring 51 is limit fitted with the second annular step 23.
In the present embodiment, the large packing 20 and the reinforcing seal 30 are both made of a soft material. Both the large packing 20 and the reinforcing seal member 30 are provided to be made of a soft material, which can improve the sealing effect of the large packing 20. The material of the large gasket 20 and the reinforcing seal 30 is plastic or rubber. Specifically, the reinforcing seal 30 is a seal ring.
Specifically, the end surface of the large valve port 21 is a seal plane 211, and when one end of the large needle abuts against the seal plane 211, the large valve port 21 is closed. By arranging the end face of the large valve port 21 as the sealing plane 211, when one end of the large valve port 21 abuts against the sealing plane 211, one end of the large valve needle part 41 abuts against the sealing plane 211, and compared with a slope sealing mode, the large valve needle part has the advantages of large contact area and more reliable sealing, and the largest flow area can be realized, so that the flow of the electronic expansion valve is improved.
The large valve needle portion 41 is of a hollow structure, the end portion of the large valve needle portion 41 is provided with a sealing surface 411 used for being in sealing fit with the large sealing gasket 20, and the sealing surface 411 is an arc-shaped surface. By providing the sealing surface 411 in sealing engagement with the large packing 20 at the end of the large needle portion 41, the contact area is large, the sealing engagement with the large packing 20 is facilitated, and the maximum flow area can be realized, thereby improving the flow rate of the electronic expansion valve.
Specifically, the needle member 40 further includes a small needle 42, the large needle portion 41 has a small valve port 412, the small valve port 412 and the large valve port 21 are coaxially disposed, and the small needle 42 is movably disposed in the large needle portion 41 to adjust the opening degree of the small valve port 412. The small valve needle 42 is provided, and the small valve port 412 and the large valve port 21 are coaxially provided, and the small valve needle 42 is movably provided in the large valve needle portion 41, that is, the small valve needle 42 blocks or avoids the small valve port 412, thereby realizing the opening and closing of the small valve port 412.
With such arrangement, the opening degree of the small valve port 412 is adjusted by the axial movement of the small valve needle 42, so as to realize the adjustment of small flow; the opening degree of the large valve port 21 is adjusted by blocking or avoiding the large valve port 21 through the large valve needle part 41, so that the large flow is adjusted. When the electronic expansion valve is in a closed state, the small valve needle 42 blocks the small valve port 412, and the large valve needle part 41 blocks the large valve port 21; when the electronic expansion valve is in a flow regulation state, the small valve needle 42 moves axially to regulate the opening degree of the small valve port 412, and the large valve needle part 41 blocks the large valve port 21 to realize small flow regulation; when the electronic expansion valve is in a fully open state, the large valve needle portion 41 completely avoids the large valve port 21, thereby achieving the fully open state.
Specifically, the valve needle component 40 further includes a driving component, the driving component is axially movably disposed, the driving component can drive the small valve needle to move independently within a preset stroke, and the driving component can drive the large valve needle portion 41 to move through the small valve needle 42.
Specifically, the driving assembly comprises a screw rod and a connecting sleeve, one end of the connecting sleeve is connected with the small valve needle 42, the screw rod and the connecting sleeve are in axial limit fit, the screw rod is axially movably arranged, the screw rod can drive the small valve needle 42 to move independently within a preset stroke, and the screw rod can drive the large valve needle part 41 to move through the small valve needle 42. By adopting the arrangement mode, the screw rod and the connecting sleeve are in axial limiting fit, and one end of the connecting sleeve is connected with the small valve needle 42, so that when the screw rod moves in the axial direction, the connecting sleeve can be driven to move axially, and then the connecting sleeve drives the small valve needle 42 to move axially.
Further, the drive assembly further comprises a bearing, a bushing and an elastic part which are arranged in the connecting sleeve, the bearing is sleeved at one end of the screw rod, one side of the bearing and the connecting sleeve are in axial limiting fit, and the other side of the bearing, the bushing, the elastic part and the small valve needle 42 are sequentially abutted. The bearing is sleeved at one end of the screw, and one side of the bearing is matched with the connecting sleeve in an axial limiting manner, so that the bearing can be limited, the connecting sleeve can be prevented from rotating when the screw rotates, and the small valve needle 42 is further prevented from rotating; the other side of the bearing, the bushing, the elastic part and the small valve needle 42 are abutted in sequence, wherein the bushing is arranged, so that the elastic part is prevented from being directly abutted with the bearing, and the guide function can be realized; the elastic part is arranged, when the electronic expansion valve is in a closed state, the elastic part is in a compressed state, when the screw moves towards one side far away from the small valve port 412, namely, in a flow regulation state, the elastic force of the elastic part is released to drive the lining to move towards one side far away from the small valve port 412, so that the accurate control of the opening degree of the small valve port 412 is realized, and the control precision of small flow regulation is improved.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An electronic expansion valve, comprising:
a valve seat member (10);
a large gasket (20) disposed within the cavity of the valve seat member (10), the large gasket (20) having a large valve opening (21);
a reinforcing seal (30) provided between the large packing (20) and the inner wall of the valve seat member (10);
the valve needle component (40) is arranged in the cavity of the valve seat component (10), the valve needle component (40) comprises a large valve needle portion (41), and the large valve needle portion (41) is used for being matched with the large sealing gasket (20) to open and close the large valve port (21).
2. An electronic expansion valve according to claim 1, wherein the outside of the large sealing gasket (20) has a first annular step (22), the reinforcing sealing member (30) is disposed in the first annular step (22), and the reinforcing sealing member (30) abuts against the inner side surface and the bottom surface of the cavity of the valve seat member (10); or the outside of the large sealing gasket (20) is provided with an annular groove, the reinforced sealing member (30) is arranged in the annular groove, and the reinforced sealing member (30) is abutted against the inner side surface of the cavity of the valve seat component (10).
3. An electronic expansion valve according to claim 1, further comprising a position limiting structure (50) arranged in the cavity of the valve seat part (10), wherein the position limiting structure (50) abuts against one side of the large sealing gasket (20) facing the large valve needle part (41) to press the large sealing gasket (20).
4. An electronic expansion valve according to claim 3, wherein the position limiting structure (50) comprises a clamp ring (51) and a connecting ring (52) which are connected to each other, the clamp ring (51) and the large sealing gasket (20) are abutted against each other, the connecting ring (52) is located on the side of the clamp ring (51) facing away from the large sealing gasket (20), and the connecting ring (52) is welded to the inner wall of the valve seat member (10).
5. An electronic expansion valve according to claim 3, wherein the outer side wall of the retaining structure (50) towards the end of the large gasket (20) is chamfered or rounded.
6. An electronic expansion valve according to claim 3, wherein the large sealing gasket (20) has a second annular step (23) on its outer side, and the stop structure (50) and the second annular step (23) are in stop-fit.
7. An electronic expansion valve according to claim 1, wherein the large sealing gasket (20) and the reinforcing sealing member (30) are both made of a soft material, the outer diameter of the reinforcing sealing member (30) being larger than the outer diameter of the large sealing gasket (20).
8. An electronic expansion valve according to claim 1, wherein the end surface of the large valve port (21) is a sealing plane (211), and the large valve port (21) is closed when one end of the large valve needle abuts against the sealing plane (211).
9. An electronic expansion valve according to claim 8, wherein the large valve needle portion (41) is a hollow structure, the end of the large valve needle portion (41) has a sealing surface (411) for sealing engagement with the large sealing gasket (20), and the sealing surface (411) is an arc-shaped surface.
10. An electronic expansion valve according to claim 1, wherein the needle member (40) further comprises a small needle (42), the large needle portion (41) having a small valve port (412), the small valve port (412) and the large valve port (21) being coaxially arranged, the small needle (42) being movably arranged within the large needle portion (41) for adjusting an opening degree of the small valve port (412).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220250108.6U CN216742912U (en) | 2022-01-30 | 2022-01-30 | Electronic expansion valve |
| PCT/CN2023/072428 WO2023143202A1 (en) | 2022-01-30 | 2023-01-16 | Electronic expansion valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220250108.6U CN216742912U (en) | 2022-01-30 | 2022-01-30 | Electronic expansion valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216742912U true CN216742912U (en) | 2022-06-14 |
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ID=81918092
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220250108.6U Active CN216742912U (en) | 2022-01-30 | 2022-01-30 | Electronic expansion valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216742912U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023143203A1 (en) * | 2022-01-30 | 2023-08-03 | 浙江盾安人工环境股份有限公司 | Electronic expansion valve |
| WO2023143202A1 (en) * | 2022-01-30 | 2023-08-03 | 浙江盾安人工环境股份有限公司 | Electronic expansion valve |
| WO2024060983A1 (en) * | 2022-09-20 | 2024-03-28 | 浙江盾安人工环境股份有限公司 | Electronic expansion valve |
-
2022
- 2022-01-30 CN CN202220250108.6U patent/CN216742912U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023143203A1 (en) * | 2022-01-30 | 2023-08-03 | 浙江盾安人工环境股份有限公司 | Electronic expansion valve |
| WO2023143202A1 (en) * | 2022-01-30 | 2023-08-03 | 浙江盾安人工环境股份有限公司 | Electronic expansion valve |
| WO2024060983A1 (en) * | 2022-09-20 | 2024-03-28 | 浙江盾安人工环境股份有限公司 | Electronic expansion valve |
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