CN202493696U - Improved structure of nut seat of electronic expansion valve - Google Patents
Improved structure of nut seat of electronic expansion valve Download PDFInfo
- Publication number
- CN202493696U CN202493696U CN2011205756924U CN201120575692U CN202493696U CN 202493696 U CN202493696 U CN 202493696U CN 2011205756924 U CN2011205756924 U CN 2011205756924U CN 201120575692 U CN201120575692 U CN 201120575692U CN 202493696 U CN202493696 U CN 202493696U
- Authority
- CN
- China
- Prior art keywords
- nut seat
- guide sleeve
- needle guide
- valve body
- expansion valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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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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- Lift Valve (AREA)
- Electrically Driven Valve-Operating Means (AREA)
Abstract
The utility model discloses an improved structure of a nut seat of an electronic expansion valve, comprising a nut seat barrel body and a valve needle guide sleeve which are arranged in a splitting manner; the nut seat barrel body is arranged in a valve body inner hole and in interference fit with the valve body inner hole; the valve needle guide sleeve is sleeved below the nut seat barrel body and in interference fit with the valve body inner hole; a gap is formed between the nut seat barrel body and the valve needle guide sleeve and forms a buffering cavity with the valve body inner hole; and the buffering cavity is correspondingly communicated with a pressure balance hole in a valve body. According to the utility model, the present integrated structure of a nut seat barrel body and a valve needle guide sleeve is replaced by the split structure of the nut seat barrel body and the valve needle guide sleeve, so that a refrigerant generates an impact force on the valve needle guide sleeve at first, and then generates an impact force on the nut seat barrel body, here, the impact force on the nut seat barrel body is already greatly reduced and almost negligible; simultaneously, the buffering cavity is arranged, so that the pressure of the refrigerant after passing through the guide sleeve can be further released, thus ensuring the nut seat barrel body not to separate off from the valve body inner hole.
Description
Technical field
The utility model relates to valve, particularly a kind of structure-improved of electric expansion valve nut seat.
Background technique
Along with popularizing of frequency converting air conditioner, electric expansion valve is as the critical piece of frequency converting air conditioner, and its performance quality has played very big influence to travelling comfort, the energy saving of air-conditioning.And the R410 refrigeration agent of promoting gradually at present, its working pressure is far longer than general refrigerant, and is also quite higher to the requirement of withstand voltage of electric expansion valve.And in the existing technology, as shown in Figure 7, the nut seat of electric expansion valve comprises incorporated nut seat cylindrical shell 01 and needle guide sleeve 02; Valve body inner bore 031 interference fit in nut seat cylindrical shell 01 and the valve body 03; When suction tude moment ventilation, nearly all gas pressure power all can affact on nut seat cylindrical shell 01 and the needle guide sleeve 02, because the nut seat cylindrical shell 01 general material with self lubricity that all adopts; Almost there is not resiliently deformable; So the interference fit power of nut seat cylindrical shell 01 and valve body inner bore 031 can not effectively be controlled, under some specific environment, the impact force that refrigeration agent produces is during greater than the coordinate force of nut seat cylindrical shell 01 and valve body inner bore 031; Possibly cause nut seat cylindrical shell 01 to break away from valve body inner bore 031, cause the inefficacy of electronic expansion valve controls function.
Summary of the invention
The utility model problem to be solved just provides a kind of structure-improved of promptly saving cost electric expansion valve nut seat simple in structure again, can guarantee that electric expansion valve can not break away from valve body inner bore at extreme condition lower nut seat.
In order to solve the problems of the technologies described above; The utility model adopts following technological scheme: a kind of structure-improved of electric expansion valve nut seat; It is characterized in that: comprise nut seat cylindrical shell and needle guide sleeve that split is provided with; Said nut seat cylindrical shell be located in the valve body inner bore and with the valve body inner bore interference fit; Said needle guide sleeve be located at nut seat cylindrical shell below and with the valve body inner bore interference fit, have between nut seat cylindrical shell and the needle guide sleeve gap and with valve body inner bore formation buffer cavity, buffer cavity and the corresponding connection of pressure compensation opening in the valve body.
Further, be provided with the axial flow groove that is communicated with valve body mainstream channel and buffer cavity between the hole wall of the outer ring surface of said needle guide sleeve and valve body inner bore.The axial flow groove is used for fluid and flows, and the matching gap between needle guide sleeve and the needle reduces like this, and is more accurate than the cooperation of existing technology, and needle guide sleeve guiding needle prevents to damage valve port.
Further, said axial flow groove is located on the outer ring surface of needle guide sleeve.
Further, said axial flow groove is located on the hole wall of valve body inner bore.
Further, be provided with the axial flow groove that is communicated with valve body mainstream channel and buffer cavity between the outer ring surface of the inner ring surface of said needle guide sleeve and needle.Guarantee the intensity that cooperates between needle guide sleeve and the valve body inner bore, the impact force action that produces at refrigeration agent is the good fixed effect of maintenance down.
Further, said axial flow groove is located on the inner ring surface of needle guide sleeve.
Further, said axial flow groove is located on the outer ring surface of needle.
Further, said needle guide sleeve is the stainless steel guide sleeve.Stainless steel has certain elasticity, and hardness and needle are suitable, and be wear-resisting, does not produce chip, does not stop up valve port, guarantee with valve body inner bore between cooperate intensity.
Further, said needle guide sleeve is a straight cylinder.Simple in structure, convenient for production.
Further, said needle guide sleeve is the cylinder of band stepped shaft outer ring surface.Adjustment position when helping installing the needle guide sleeve.
After adopting technique scheme; The utlity model has following advantage: the branch body structure of nut seat cylindrical shell and needle guide sleeve substitutes the structure of existing nut seat cylindrical shell and needle guide sleeve one; The impact force that refrigeration agent is directly produced the nut seat cylindrical shell has become refrigeration agent and earlier the needle guide sleeve has been produced impact force; Again the nut seat cylindrical shell is produced impact force, and reduce, and almost can ignore this moment greatly to the impact force of nut seat cylindrical shell; Meanwhile be provided with again buffer cavity with valve body in corresponding connection of pressure compensation opening, again further venting through behind the guide sleeve refrigerant pressure, guarantee that the nut seat cylindrical shell do not deviate from from valve body inner bore.
Description of drawings
Below in conjunction with accompanying drawing the utility model is described further:
Fig. 1 is a kind of embodiment's of the utility model a structural representation;
Fig. 2 is located at the structural representation on the outer ring surface of needle guide sleeve for the axial flow groove;
Fig. 3 is located at the structural representation on the hole wall of valve body inner bore for the axial flow groove;
Fig. 4 is located at the structural representation on the inner ring surface of needle guide sleeve for the axial flow groove;
Fig. 5 is located at the structural representation on the outer ring surface of needle for the axial flow groove;
Fig. 6 is the structural representation of the cylinder of band stepped shaft outer ring surface;
Fig. 7 is the structural representation of existing a kind of electric expansion valve nut seat.
Embodiment
Be illustrated in figure 1 as a kind of embodiment of the utility model; A kind of structure-improved of electric expansion valve nut seat; Comprise nut seat cylindrical shell 1 and needle guide sleeve 2 that split is provided with; Said nut seat cylindrical shell be located in the valve body inner bore 31 of valve body 3 and with the valve body inner bore interference fit; Said needle guide sleeve be located at nut seat cylindrical shell below and with the valve body inner bore interference fit, have between nut seat cylindrical shell and the needle guide sleeve gap and with valve body inner bore formation buffer cavity 4, the pressure compensation opening 5 corresponding connections in buffer cavity and the valve body.
In the present embodiment, be provided with the axial flow groove 7 that is communicated with valve body mainstream channel 6 and buffer cavity between the hole wall 32 of the outer ring surface 21 of said needle guide sleeve and valve body inner bore.As shown in Figure 2, said axial flow groove can be located on the outer ring surface of needle guide sleeve; Also can be as shown in Figure 3, said axial flow groove is located on the hole wall of valve body inner bore.Can also the axial flow groove be located between the outer ring surface 81 of inner ring surface 22 and needle 8 of said needle guide sleeve in addition.As shown in Figure 4, said axial flow groove is located on the inner ring surface of needle guide sleeve; Perhaps as shown in Figure 5, said axial flow groove is located on the outer ring surface of needle.
In addition, said needle guide sleeve is preferably the stainless steel guide sleeve.In the present embodiment, said needle guide sleeve is a straight cylinder.Also can be arranged to the cylinder of band stepped shaft outer ring surface 23 shown in Figure 6.
The utility model adopts the branch body structure of nut seat cylindrical shell and needle guide sleeve to substitute the structure of existing nut seat cylindrical shell and needle guide sleeve one; The impact force that refrigeration agent is directly produced the nut seat cylindrical shell has become refrigeration agent and earlier the needle guide sleeve has been produced impact force; Again the nut seat cylindrical shell is produced impact force; And greatly reduce the impact force of nut seat cylindrical shell this moment, almost can ignore; Meanwhile be provided with again buffer cavity with valve body in corresponding connection of pressure compensation opening, again further venting through behind the guide sleeve refrigerant pressure, guarantee that the nut seat cylindrical shell do not deviate from from valve body inner bore.
Except that above-mentioned preferred embodiment; The utility model also has other mode of execution; Those skilled in the art can make various changes and distortion according to the utility model, only otherwise break away from the spirit of the utility model, all should belong to the defined scope of the utility model accompanying claims.
Claims (10)
1. the structure-improved of an electric expansion valve nut seat; It is characterized in that: comprise nut seat cylindrical shell (1) and needle guide sleeve (2) that split is provided with; Said nut seat cylindrical shell be located in the valve body inner bore (31) of valve body (3) and with the valve body inner bore interference fit; Said needle guide sleeve be located at nut seat cylindrical shell below and with the valve body inner bore interference fit; Have the gap between nut seat cylindrical shell and the needle guide sleeve and form buffer cavity (4), the corresponding connection of pressure compensation opening (5) in buffer cavity and the valve body with valve body inner bore.
2. the structure-improved of a kind of electric expansion valve nut seat according to claim 1 is characterized in that: be provided with the axial flow groove (7) that is communicated with valve body mainstream channel (6) and buffer cavity between the hole wall (32) of the outer ring surface of said needle guide sleeve (21) and valve body inner bore.
3. the structure-improved of a kind of electric expansion valve nut seat according to claim 2 is characterized in that: said axial flow groove is located on the outer ring surface of needle guide sleeve.
4. the structure-improved of a kind of electric expansion valve nut seat according to claim 2 is characterized in that: said axial flow groove is located on the hole wall of valve body inner bore.
5. the structure-improved of a kind of electric expansion valve nut seat according to claim 1 is characterized in that: be provided with the axial flow groove that is communicated with valve body mainstream channel and buffer cavity between the outer ring surface (81) of the inner ring surface of said needle guide sleeve (22) and needle (8).
6. the structure-improved of a kind of electric expansion valve nut seat according to claim 5 is characterized in that: said axial flow groove is located on the inner ring surface of needle guide sleeve.
7. the structure-improved of a kind of electric expansion valve nut seat according to claim 5 is characterized in that: said axial flow groove is located on the outer ring surface of needle.
8. according to the structure-improved of the arbitrary described a kind of electric expansion valve nut seat of claim 1 to 7, it is characterized in that: said needle guide sleeve is the stainless steel guide sleeve.
9. the structure-improved of a kind of electric expansion valve nut seat according to claim 8 is characterized in that: said needle guide sleeve is a straight cylinder.
10. the structure-improved of a kind of electric expansion valve nut seat according to claim 8 is characterized in that: said needle guide sleeve is the cylinder of band stepped shaft outer ring surface (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205756924U CN202493696U (en) | 2011-12-31 | 2011-12-31 | Improved structure of nut seat of electronic expansion valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205756924U CN202493696U (en) | 2011-12-31 | 2011-12-31 | Improved structure of nut seat of electronic expansion valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202493696U true CN202493696U (en) | 2012-10-17 |
Family
ID=46999928
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205756924U Expired - Lifetime CN202493696U (en) | 2011-12-31 | 2011-12-31 | Improved structure of nut seat of electronic expansion valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202493696U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103591319A (en) * | 2013-11-20 | 2014-02-19 | 南通龙源电站阀门有限公司 | Small-flow temperature-reducing water regulating valve |
| CN104225976A (en) * | 2014-10-14 | 2014-12-24 | 淮北市一环矿山机械有限公司 | Lifting device buffer |
| CN106545660A (en) * | 2015-09-23 | 2017-03-29 | 盾安环境技术有限公司 | A kind of electric expansion valve |
| CN109751428A (en) * | 2017-11-07 | 2019-05-14 | 浙江三花智能控制股份有限公司 | Electric expansion valve |
| WO2020248760A1 (en) * | 2019-06-12 | 2020-12-17 | 浙江盾安人工环境股份有限公司 | Electronic expansion valve |
-
2011
- 2011-12-31 CN CN2011205756924U patent/CN202493696U/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103591319A (en) * | 2013-11-20 | 2014-02-19 | 南通龙源电站阀门有限公司 | Small-flow temperature-reducing water regulating valve |
| CN103591319B (en) * | 2013-11-20 | 2016-02-17 | 南通龙源电站阀门有限公司 | A kind of small flow Desuperheating water regulating valve |
| CN104225976A (en) * | 2014-10-14 | 2014-12-24 | 淮北市一环矿山机械有限公司 | Lifting device buffer |
| CN104225976B (en) * | 2014-10-14 | 2015-10-28 | 淮北市一环矿山机械有限公司 | Lifting device buffer |
| CN106545660A (en) * | 2015-09-23 | 2017-03-29 | 盾安环境技术有限公司 | A kind of electric expansion valve |
| CN106545660B (en) * | 2015-09-23 | 2020-04-10 | 盾安环境技术有限公司 | Electronic expansion valve |
| CN109751428A (en) * | 2017-11-07 | 2019-05-14 | 浙江三花智能控制股份有限公司 | Electric expansion valve |
| CN109751428B (en) * | 2017-11-07 | 2022-04-26 | 浙江三花智能控制股份有限公司 | Electronic expansion valve |
| WO2020248760A1 (en) * | 2019-06-12 | 2020-12-17 | 浙江盾安人工环境股份有限公司 | Electronic expansion valve |
| KR20210142202A (en) * | 2019-06-12 | 2021-11-24 | 제지앙 둔안 아트피셜 인바이런먼트 컴퍼니 리미티드 | electronic expansion valve |
| KR102571453B1 (en) | 2019-06-12 | 2023-08-28 | 제지앙 둔안 아트피셜 인바이런먼트 컴퍼니 리미티드 | electronic expansion valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121017 |
|
| CX01 | Expiry of patent term |