CN217898829U - Valve needle component and electronic expansion valve - Google Patents
Valve needle component and electronic expansion valve Download PDFInfo
- Publication number
- CN217898829U CN217898829U CN202222155799.4U CN202222155799U CN217898829U CN 217898829 U CN217898829 U CN 217898829U CN 202222155799 U CN202222155799 U CN 202222155799U CN 217898829 U CN217898829 U CN 217898829U
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- flat gasket
- needle
- annular structure
- valve needle
- valve
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- 230000003746 surface roughness Effects 0.000 claims description 5
- 239000000463 material Substances 0.000 abstract description 7
- 238000000034 method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000003754 machining Methods 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
- F16K1/38—Valve members of conical shape
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
- Electrically Driven Valve-Operating Means (AREA)
Abstract
The utility model provides a needle part and electronic expansion valve, the needle part includes: a screw; assembling; the annular structure is arranged in the assembling sleeve, and a part of the screw rod penetrates through the annular structure; the flat gasket is arranged in the assembly sleeve and is provided with a first end face and a second end face; the first end surface is abutted with the annular structure, and the flat gasket is of a hollow annular structure; the valve needle structure is abutted to the second end face. The flat gasket is a flat plate-shaped hollow annular structure, and has the advantages of simple processing, high material utilization rate and low cost; the flat gasket is arranged in the assembly sleeve and is positioned between the annular structure and the valve needle structure, so that the annular structure is prevented from being in direct contact with the valve needle structure, the friction between the annular structure and the valve needle structure is reduced, and the overall working reliability and service life of the valve needle component are improved.
Description
Technical Field
The utility model relates to an electronic expansion valve technical field particularly, relates to a needle part and electronic expansion valve.
Background
At present, a gasket arranged on a valve needle component in an existing electronic expansion valve generally adopts a circular ring structure with a stepped hole as an inner hole, and the whole structure of the gasket needs to be subjected to finish machining steps such as turning and the like, so that the mechanical machining process required by the gasket is complex, the machining cost of the gasket is high, and the price of the gasket is high.
SUMMERY OF THE UTILITY MODEL
The utility model provides a needle part and electronic expansion valve to the required machining process of gasket among the solution prior art is complicated, leads to the higher problem of processing cost of gasket.
In order to solve the above problem, according to an aspect of the present invention, the present invention provides a valve needle component, including: a screw; assembling; the annular structure is arranged in the assembling sleeve, and a part of the screw rod penetrates through the annular structure; the flat gasket is arranged in the assembly sleeve and is provided with a first end face and a second end face; the first end surface is abutted against the annular structure, and the flat gasket is of a hollow annular structure; the valve needle structure is abutted to the second end face.
Further, the flat gasket is a stamped and integrally formed gasket.
Furthermore, the thickness of the flat gasket is 0.3 mm-0.8 mm.
Further, the surface roughness of the flat gasket is less than 0.8 microns.
Further, the hardness of the first end face is greater than that of the annular structure, the valve needle structure comprises a valve needle and an elastic part which are axially matched with each other, the second end face is abutted to the elastic part, the hardness of the second end face is greater than that of the elastic part, and the valve needle is radially fixed by the assembling sleeve.
Furthermore, one end of the valve needle penetrates into the assembling sleeve, and the other end of the valve needle is positioned outside the assembling sleeve, or the valve needle and the assembling sleeve are of an integral structure.
Furthermore, the elastic part is a spring, the pitch diameter of the spring is D2, the diameter of an inner hole of the flat gasket is D, and D2> D.
Further, the spring is two-end and is ground flat.
Furthermore, the outer diameter of the flat gasket is D, the assembly sleeve comprises a sleeve body, the flat gasket is located in the sleeve body, the inner diameter of the sleeve body is D1, and D1-D = 0.1-1 mm.
Furthermore, one end of the screw rod is provided with a flanging structure, and the flanging structure is in limit fit with one end of the annular structure; the outer diameter of the flanged structure after flanging is D3, the diameter of an inner hole of the flat gasket is D, and D-D3= 0.9-1.8 mm.
Furthermore, the annular structure is a bearing, the diameter of an inner ring of the bearing is D4, the diameter of an outer ring of the bearing is D5, the outer diameter of the flat gasket is D, and the diameter of an inner hole of the flat gasket is D; wherein D > D4, D < D5; the outer ring of the bearing has a hardness less than the hardness of the first end surface.
According to another aspect of the present invention, there is provided an electronic expansion valve, which includes the above-mentioned valve needle component.
Use the technical scheme of the utility model, a needle part is provided, include: a screw; assembling; the annular structure is arranged in the assembling sleeve, and a part of the screw rod penetrates through the annular structure; the flat gasket is arranged in the assembly sleeve and is provided with a first end face and a second end face; the first end surface is abutted with the annular structure, and the flat gasket is of a hollow annular structure; the valve needle structure is abutted to the second end face. The flat gasket is a flat plate-shaped hollow annular structure, and has the advantages of simple processing, high material utilization rate and low cost; the flat gasket is arranged in the assembly sleeve and is positioned between the annular structure and the valve needle structure, so that the annular structure is prevented from being in direct contact with the valve needle structure, the friction between the annular structure and the valve needle structure is reduced, and the overall working reliability and the service life of the valve needle component are improved.
Drawings
The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 shows a schematic structural diagram of a valve needle component provided by an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a flat gasket provided in an embodiment of the present invention;
fig. 3 shows a schematic structural diagram of an assembly set provided by an embodiment of the present invention;
fig. 4 shows a schematic structural diagram of a spring provided by an embodiment of the present invention;
fig. 5 shows a schematic structural diagram of a bearing provided by an embodiment of the present invention.
Wherein the figures include the following reference numerals:
10. a screw; 11. a flanging structure;
20. assembling; 21. a sleeve body;
30. a ring-shaped structure; 31. a bearing;
40. flattening the gasket; 41. a first end face; 42. a second end face;
50. a valve needle structure; 51. a valve needle; 52. an elastic member; 521. a spring.
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 embodiments described are only some embodiments of the invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 1-5, embodiments of the present invention provide a valve needle component, comprising: a screw 10; an assembly set 20; the annular structure 30, the annular structure 30 is set up in the assembly sleeve 20, a part of the threaded spindle 10 is worn and set up in the annular structure 30; a flat gasket 40, the flat gasket 40 being disposed within the mounting sleeve 20, the flat gasket 40 having a first end face 41 and a second end face 42; the first end surface 41 is abutted with the annular structure 30, and the flat gasket 40 is a hollow annular structure; the valve pin structure 50, the valve pin structure 50 and the second end face 42 abut. The flat gasket 40 is a flat plate-shaped hollow annular structure, and has the advantages of simple processing, high material utilization rate and low cost; the flat gasket 40 is arranged in the assembly sleeve 20 and is positioned between the annular structure 30 and the valve needle structure 50, so that the annular structure 30 is prevented from being in direct contact with the valve needle structure 50, the friction between the annular structure 30 and the valve needle structure 50 is reduced, and the overall working reliability and service life of the valve needle component are improved.
As shown in fig. 2, the flat gasket 40 is a stamped and integrally formed gasket. The flat gasket 40 is processed by adopting a stamping process, the process is simple, the flat gasket 40 is integrally formed by stamping, the processing efficiency is high, and the processing cost of the gasket in the valve needle component is effectively reduced.
The thickness of the flat gasket 40 is 0.3 mm-0.8 mm, and the thickness size range of the flat gasket 40 ensures that the flat gasket 40 is as light and thin as possible under the condition that the strength of the flat gasket 40 meets the actual use requirement, so that the material is saved, and the cost is further reduced.
The surface roughness of the flat gasket 40 is less than 0.8 micron, and the surface roughness of the flat gasket 40 is lower than that of the existing gasket under the condition of meeting the actual use requirement, so that the processing procedure aiming at the surface roughness is saved, and the processing cost is reduced.
The first end surface 41 has a hardness greater than that of the annular structure 30, the needle structure 50 includes a needle 51 and a resilient member 52 that are axially fitted to each other, the second end surface 42 abuts the resilient member 52, the second end surface 42 has a hardness greater than that of the resilient member 52, and the fitting sleeve 20 radially fixes the needle 51. The difference in hardness between the first end surface 41 and the annular structure 30 reduces the deformation of the first end surface 41, effectively reduces the friction coefficient between the first end surface 41 and the annular structure 30, and improves the wear resistance of the first end surface 41; the difference in hardness between the second end surface 42 and the elastic member 52 reduces the deformation of the second end surface 42, effectively reduces the friction coefficient between the second end surface 42 and the elastic member 52, and improves the wear resistance of the second end surface 42.
In one embodiment of the present invention, the material of the flat gasket 40 is engineering plastic or metal; the first end face 41 and the second end face 42 of the flat gasket 40 are provided with metal coatings, and the wear of the first end face 41 and the second end face 42 is further reduced by selecting wear-resistant metal to be made into the metal coatings.
In one embodiment of the present invention, the needle 51 and the mounting sleeve 20 are two separate pieces, with one end of the needle 51 penetrating into the mounting sleeve 20 and the other end of the needle 51 being located outside the mounting sleeve 20. The valve needle structure 50 further comprises a connecting ring penetrating the assembly sleeve 20 and fixedly connected with the assembly sleeve 20, and the valve needle 51 penetrates the connecting ring and is fixedly connected with the connecting ring.
Alternatively, in another embodiment of the present invention, the needle 51 and the mounting sleeve 20 are integrated, that is, the needle 51 and the mounting sleeve 20 are a single component, so as to reduce the number of components, and the mounting sleeve 20 further includes a snap ring engaged therewith for limiting the annular structure.
As shown in fig. 2 and 4, the elastic member 52 is a spring 521, the pitch diameter of the spring 521 is D2, and the inner hole diameter of the flat gasket 40 is D, D2> D. This ensures that the spring 521 does not become embedded in the inner bore of the flat washer 40.
The spring 521 is a two-end and ground flat spring. The two ends of the spring are tightly ground to be flat, so that the valve opening performance of the valve needle component can be in the optimal state; it should be noted that: the tightening is that the last two circles at the two ends of the spring 521 are attached, and the grinding is that the spring wire of the last circle of the spring 521 is ground, so that the end surface of the spring 521 is a plane; the tightness can help the spring 521 to be more smooth when being ground, and the height difference is not easy to generate; the contact between the flattened spring 521 and the second end face 42 is smoother, so that the friction force is effectively reduced, and the abrasion of the spring 521 and the second end face 42 of the flat gasket 40 is reduced.
As shown in fig. 2 and 3, the flat gasket 40 has an outer diameter dimension D, the assembly sleeve 20 includes a sleeve body 21, the flat gasket 40 is located inside the sleeve body 21, the inner diameter dimension of the sleeve body 21 is D1, and D1-D = 0.1-1 mm. By the arrangement, the radial positioning accuracy of the flat gasket 40 is ensured, and the actual use requirement is met.
As shown in fig. 1 and 2, one end of the screw 10 is provided with a flanging structure 11, and the flanging structure 11 is in limit fit with one end of the annular structure 30; the outer diameter of the flanging structure 11 after flanging is D3, the diameter of the inner hole of the flat gasket 40 is D, and D-D3= 0.9-1.8 mm. By means of the arrangement, even if the axial direction of the flat gasket 40 in the assembling sleeve 20 is inclined, the inner hole of the flat gasket 40 cannot interfere with the flanging structure 11 of the screw 10.
As shown in fig. 2 and 5, the annular structure 30 is a bearing 31, the diameter of the inner ring of the bearing 31 is D4, the diameter of the outer ring of the bearing 31 is D5, the outer diameter of the flat gasket 40 is D, and the diameter of the inner hole of the flat gasket 40 is D; wherein D > D4, D < D5; the outer ring of the bearing 31 has a hardness less than the hardness of the first end face 41. By the arrangement, the inner ring of the bearing 31 is ensured not to be in direct contact with the flat gasket 40, so that the flat gasket 40 is prevented from influencing the rotation of the inner ring of the bearing 31; at the same time, the annular range of the first end face 41 is ensured to fall within the range between the inner and outer rings of the bearing 31, ensuring effective abutment of the flat gasket 40 and the bearing 31.
The utility model also provides an electronic expansion valve, electronic expansion valve includes foretell needle part. The flat gasket 40 arranged in the electronic expansion valve is of a hollow annular structure, so that the electronic expansion valve is simple to process, high in material utilization rate and low in cost; the flat gasket 40 is arranged in the assembling sleeve 20 and is positioned between the annular structure 30 and the valve needle structure 50, so that the annular structure 30 is prevented from being in direct contact with the valve needle structure 50, the friction between the annular structure 30 and the valve needle structure 50 is reduced, the overall working reliability and the service life of a valve needle component in the electronic expansion valve are improved, and the electronic expansion valve adopting the valve needle component is low in cost and reliable in working.
In summary, the flat gasket 40 provided by the utility model has a hollow ring structure, simple processing, high material utilization rate and low cost; the flat gasket 40 is arranged in the assembly sleeve 20 and is positioned between the annular structure 30 and the valve needle structure 50, so that the annular structure 30 is prevented from being in direct contact with the valve needle structure 50, the friction between the annular structure 30 and the valve needle structure 50 is reduced, and the overall working reliability and service life of the valve needle component are improved.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
Unless specifically stated otherwise, the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be discussed further in subsequent figures.
In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and in the case of not making a contrary explanation, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be interpreted as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.
For ease of description, spatially relative terms such as "over … …", "over … …", "over … …", "over", etc. may be used herein to describe the spatial positional relationship of one device or feature to another device or feature as shown in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms do not have special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.
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 (12)
1. A valve needle component, comprising:
a screw (10);
an assembly set (20);
an annular structure (30), the annular structure (30) being disposed within the assembly sleeve (20), a portion of the threaded rod (10) being disposed through the annular structure (30);
a flat gasket (40), the flat gasket (40) being disposed within the assembly set (20), the flat gasket (40) having a first end face (41) and a second end face (42); the first end surface (41) is abutted with the annular structure (30), and the flat gasket (40) is a hollow annular structure;
a needle structure (50), the needle structure (50) abutting the second end face (42).
2. Valve needle component according to claim 1, characterized in that the flat gasket (40) is a stamped and integrally formed gasket.
3. Valve needle component according to claim 1, characterized in that the flat gasket (40) has a thickness of 0.3mm to 0.8mm.
4. Valve pin component according to claim 1, characterized in that the surface roughness of the flat gasket (40) is less than 0.8 micrometer.
5. A needle component according to claim 1, characterized in that the first end surface (41) has a hardness greater than the hardness of the annular structure (30), the needle structure (50) comprises a needle (51) and a resilient member (52) axially cooperating with each other, the second end surface (42) and the resilient member (52) abut, the second end surface (42) has a hardness greater than the resilient member (52), and the assembly sleeve (20) radially fixes the needle (51).
6. A needle component according to claim 5, characterized in that one end of the needle (51) penetrates into the assembly set (20) and the other end of the needle (51) is located outside the assembly set (20), or the needle (51) and the assembly set (20) are of an integral structure.
7. The needle component of claim 6, wherein the resilient member (52) is a spring (521), the spring (521) has a pitch diameter D2, and the flat washer (40) has an inner bore diameter D, D2> D.
8. Valve needle component according to claim 7, characterized in that the spring (521) is a double-ended and ground flat spring.
9. The needle component of claim 1, wherein the flat gasket (40) has an outer diameter dimension D, the assembly set (20) comprises a set body (21), the flat gasket (40) is located inside the set body (21), and the set body (21) has an inner diameter dimension D1, D1-D = 0.1-1 mm.
10. The valve needle component of claim 1, wherein one end of the screw (10) is provided with a flanging structure (11), and the flanging structure (11) is in limit fit with one end of the annular structure (30); the outer diameter of the flanged structure (11) after flanging is D3, the diameter of an inner hole of the flat gasket (40) is D, and D-D3= 0.9-1.8 mm.
11. Valve needle component according to claim 1, characterized in that the annular structure (30) is a bearing (31), the inner ring diameter of the bearing (31) is D4, the outer ring diameter of the bearing (31) is D5, the outer diameter dimension of the flat gasket (40) is D, the inner bore diameter of the flat gasket (40) is D; wherein D > D4, D < D5; the hardness of the outer ring of the bearing (31) is less than the hardness of the first end face (41).
12. An electronic expansion valve, characterized in that it comprises a valve needle part according to any of claims 1 to 11.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222155799.4U CN217898829U (en) | 2022-08-16 | 2022-08-16 | Valve needle component and electronic expansion valve |
| PCT/CN2023/108464 WO2024037275A1 (en) | 2022-08-16 | 2023-07-20 | Valve needle component and electronic expansion valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222155799.4U CN217898829U (en) | 2022-08-16 | 2022-08-16 | Valve needle component and electronic expansion valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217898829U true CN217898829U (en) | 2022-11-25 |
Family
ID=84143410
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222155799.4U Active CN217898829U (en) | 2022-08-16 | 2022-08-16 | Valve needle component and electronic expansion valve |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN217898829U (en) |
| WO (1) | WO2024037275A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024037275A1 (en) * | 2022-08-16 | 2024-02-22 | 浙江盾安人工环境股份有限公司 | Valve needle component and electronic expansion valve |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE112019000943T5 (en) * | 2018-02-23 | 2020-11-19 | Nippon Pillar Packing Co., Ltd. | Structure for attaching a seal to a block |
| DE102018133681A1 (en) * | 2018-12-28 | 2020-07-02 | Schwäbische Hüttenwerke Automotive GmbH | Rotary pump with axial compensation, outlet seal for one pump and pre-assembled pump unit |
| CN213419940U (en) * | 2020-10-16 | 2021-06-11 | 浙江盾安人工环境股份有限公司 | Valve core assembly and electronic expansion valve |
| CN113685558A (en) * | 2021-09-29 | 2021-11-23 | 广东威灵电机制造有限公司 | Electronic expansion valve and refrigeration equipment |
| CN217898829U (en) * | 2022-08-16 | 2022-11-25 | 浙江盾安人工环境股份有限公司 | Valve needle component and electronic expansion valve |
-
2022
- 2022-08-16 CN CN202222155799.4U patent/CN217898829U/en active Active
-
2023
- 2023-07-20 WO PCT/CN2023/108464 patent/WO2024037275A1/en unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024037275A1 (en) * | 2022-08-16 | 2024-02-22 | 浙江盾安人工环境股份有限公司 | Valve needle component and electronic expansion valve |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2024037275A1 (en) | 2024-02-22 |
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