CN104930764A - Electric expansion valve - Google Patents
Electric expansion valve Download PDFInfo
- Publication number
- CN104930764A CN104930764A CN201410106076.2A CN201410106076A CN104930764A CN 104930764 A CN104930764 A CN 104930764A CN 201410106076 A CN201410106076 A CN 201410106076A CN 104930764 A CN104930764 A CN 104930764A
- Authority
- CN
- China
- Prior art keywords
- nut
- guide rail
- spring guide
- expansion valve
- electric 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/31—Expansion valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/31—Expansion valves
- F25B41/34—Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators
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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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Transmission Devices (AREA)
Abstract
The invention discloses an electric expansion valve. A spring guide rail and a stop ring are nested together, and are screwed up mutually and then are disposed on a nut in a sleeving manner. The spring guide rail comprises a spiral guide part, an upper stop part, and a lower stop part, wherein the upper and lower stop parts are respectively disposed on the upper and lower ends of the spiral guide part. The nut consists of a nut upper part and a nut bottom part. The nut bottom part comprises a step part, wherein the diameter of the step part is greater than the diameter of the nut upper part. The lower stop part of the spring guide rail comprises an inclined segment which is axially inclined towards the nut. The tail end of the inclined segment is provided with a bent segment, and the step part is provided with an inclined surface which is used for the positioning of the inclined segment. According to the nut in the invention, the cooperation structure of the nut bottom part with the lower stop part of the spring guide rail is simplified, so the structure is simple and materials are saved. In addition, the limiting spring enables a plurality of segments to be bent into the combination of one inclined segment and one bent segment, thereby reducing the bending times and enabling the structure to be simple.
Description
Technical field
The present invention relates to field of Refrigeration and Air-conditioning, especially electric expansion valve.
Background technology
Notification number is that the Chinese invention patent of 103375624A discloses a kind of motor-driven valve and stop device thereof, comprise inside and outside nested and the spring guide rail of threaded engagement and slip ring, spring guide rail has upper retainer and lower retainer, and also comprise the nut coordinated with motor-driven valve screw mandrel, nut has step surface; Nut below step surface has engaging limiting section; Spring guide rail is sleeved on the nut of more than described step surface, also comprises the first limiting section and the second limiting section; Engaging limiting section on described nut specifically comprises the first engaging limiting section and the second engaging limiting section.In addition, notification number be 102454819 and 102454818 Chinese invention patent also disclose similar motor-driven valve and stop device thereof, but without exception, not only nut structure is comparatively complicated, and limit spring multistage bending, structure is more complicated also.
Summary of the invention
Technical problem to be solved by this invention just there is provided a kind of electric expansion valve, simplifies the structure of stop device, reduces manufacturing cost, promotes functional reliability.
For solving the problems of the technologies described above, the present invention adopts following technical scheme: a kind of electric expansion valve, comprise stop device, described stop device comprises spring guide rail and Sealing shield ring, described spring guide rail is nested with inside and outside Sealing shield ring and mutually screw and be sleeved on nut, described spring guide rail comprises spirally-guided portion and is arranged at the upper retainer of top and bottom, spirally-guided portion and lower retainer, and described Sealing shield ring slides between upper and lower retainer; Described nut forms by bottom nut top and nut, the stage portion that diameter is greater than nut upper diameter is comprised bottom nut, under described spring guide rail, retainer comprises with nut shaft to the tilting section tilted, the end of tilting section is provided with bending segment, and described stage portion is provided with the inclined plane positioned tilting section.
Preferably, described inclined plane is the bottom surface of the skewed slot that stage portion surface thereof is offered, and the cell wall of skewed slot limits spring guide rail and rotates in a circumferential direction.
Preferably, described inclined plane is the conical surface that stage portion top loop is arranged around whole stage portion circumference.
Preferably, described bending segment is L-type.
Preferably, the stop afterbody of Sealing shield ring is provided with to the outstanding protuberance of Sealing shield ring outer circumferential sides.
Preferably, described stage portion is provided with connecting plate, and the cylindrical of described connecting plate is provided with gap slot, and bending segment end is hooked on the gap slot place of connecting plate.
Preferably, under described spring guide rail, the angle of inclination of the tilting section of retainer is greater than the angle of inclination of the inclined plane of nut stage portion.
Preferably, large compared with the angle of inclination of the inclined plane of nut stage portion 3 ° ~ 5 ° of the angle of inclination of the tilting section of retainer under described spring guide rail.
Nut in the present invention, owing to simplifying the structure coordinated with retainer under spring guide rail bottom nut, thus structure is simple, saves material; In addition, limit spring changes multistage bending the combination of a tilting section and a bending segment into, and reduce bending number of times, structure is simple.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the invention will be further described:
Fig. 1 is the structural representation of spring guide rail and Sealing shield ring in embodiment 1;
Fig. 2 is the structural representation of spring guide rail and nut in embodiment 1;
Fig. 3 is that in embodiment 1, spring guide rail and Sealing shield ring are sleeved on the structural representation on nut;
Fig. 4 is that in embodiment 1, nut and valve seat assemble rear structural representation;
Fig. 5 is the structural representation of nut in embodiment 2;
Fig. 6 is that in embodiment 2, spring guide rail and Sealing shield ring are sleeved on the structural representation on nut;
Fig. 7 is the structural representation of Sealing shield ring in embodiment 2.
In figure: Sealing shield ring 4, protuberance 41, spring guide rail 12, spirally-guided portion 120, upper retainer 122, lower retainer 121, tilting section 1211, bending segment 1212, nut 5, nut top 50, bottom nut 51, portion 511 of topping bar, stepped down part 512, connecting plate 52, gap slot 520, skewed slot 5110, the conical surface 5111, axial intersecting plane 5120.
Detailed description of the invention
First, composition graphs 1 to Fig. 4 illustrates embodiments of the invention 1.
A kind of electric expansion valve, comprise stop device, described stop device comprises spring guide rail 12 and Sealing shield ring 4, described spring guide rail 12 is nested with inside and outside Sealing shield ring 4 and mutually screw and be sleeved on nut 5, described spring guide rail 12 comprises spirally-guided portion 120 and is arranged at upper retainer 122 and the lower retainer 121 of top and bottom, spirally-guided portion, and described Sealing shield ring slides between upper and lower retainer; Described nut is by 51 forming bottom nut top 50 and nut, nut top 50 is hollow cylindrical structure, comprise diameter bottom nut and be greater than the stepped down part 512 that the portion of topping bar 511 of nut upper diameter and diameter be greater than portion's diameter of topping bar, the cylindrical of described stepped down part is provided with connecting plate 52, this connecting plate 52 is entrenched on stepped down part 512 after both can processing separately, also can with nut integrated injection molding, the cylindrical of described connecting plate is provided with gap slot 520; Under described spring guide rail, retainer axially extends along nut outer wall, under described spring guide rail, retainer comprises with nut shaft to the tilting section 1211 tilted, the end of tilting section is provided with bending segment 1212, described bending segment 1212 is vertically arranged, bending segment 1212 end is hooked on the gap slot place of connecting plate, can effectively prevent spring guide rail radial direction play and circumference from rotating.Described portion 511 of topping bar is provided with the inclined plane positioned tilting section, and tilting section is close in this inclined plane.
In the present embodiment, top bar portion 511 for hollow cylinder, inclined plane is the bottom surface of the skewed slot 5110 that portion of topping bar 511 offers vertically, this skewed slot 5110 is from the upper surface upwards stage portion bottom angled extension in the portion of topping bar, under spring guide rail, the tilting section 1211 of retainer snaps in skewed slot 5110, the cell wall of skewed slot limits spring guide rail and rotates in a circumferential direction, and thus this skewed slot solves the axial and horizontal location of spring guide rail simultaneously, simply reliable.In addition, described bending segment 1212 is in L-type, L-type side and connecting plate 52 plane orthogonal, L-type base is parallel with connecting plate 52 plane, described stepped down part 512 on the upside of gap slot 520 and downside correspondence be provided with axial intersecting plane 5120, so that bending segment 1212 lateral section leans, bending segment base bail portion is divided, and is hooked on gap slot 520.
Embodiments of the invention 2 are illustrated below in conjunction with Fig. 5 to Fig. 7.
In example 2, other structures are identical with embodiment 1, but inclined plane is the conical surface 5111 on top, portion of topping bar, and this conical surface 5111 is arranged around whole stage portion circumference.The direct employing conical surface positions, and solving lower retainer in planar positioning structure needs to arrange transverse part, but lower retainer is too short, and transverse part is difficult to the problem of Bending Processing.In addition, the stop afterbody of Sealing shield ring 4 is provided with the protuberance 41 outstanding to Sealing shield ring outer circumferential sides, prevents from slipping over retainer.
In the above two embodiments, under described spring guide rail, the angle of inclination of the tilting section of retainer is greater than the angle of inclination of the inclined plane of nut stage portion.Preferably, large compared with the angle of inclination of the inclined plane of nut stage portion 3 ° ~ 5 ° of the angle of inclination of the tilting section of retainer under described spring guide rail.Top bar after on location structure when retainer under spring guide rail is buckled in nut, tilting section can produce a pretightning force, ensures that spring guide rail is axially reliable and stable.Specific to embodiment 2, cone element and axis angle are 60 ° of acute angles, and about 63 ~ 65 °, the tilting section angle of inclination of lower retainer, guarantees that tilting section upper end contacts with nut like this, the axis of spring guide rail and located lateral just located at the upper end of the conical surface, and positioning precision is high.
Claims (8)
1. an electric expansion valve, comprise stop device, described stop device comprises spring guide rail (12) and Sealing shield ring (4), described spring guide rail (12) and Sealing shield ring (4) are inside and outside nested and mutually screw and be sleeved on nut (5), described spring guide rail (12) comprises spirally-guided portion (120) and is arranged at upper retainer (122) and the lower retainer (121) of top and bottom, spirally-guided portion, and described Sealing shield ring (4) slides between upper and lower retainer; Described nut (5) is made up of (51) bottom nut top (50) and nut, the stage portion that diameter is greater than nut upper diameter is comprised bottom nut, it is characterized in that: under described spring guide rail, retainer (121) comprises with nut shaft to the tilting section tilted (1211), the end of tilting section (1211) is provided with bending segment (1212), and described stage portion is provided with the inclined plane positioned tilting section (1211).
2. a kind of electric expansion valve according to claim 1, is characterized in that: described inclined plane is the bottom surface of the skewed slot (5110) that stage portion surface thereof is offered, and the cell wall of skewed slot (5110) limits spring guide rail (12) and rotates in a circumferential direction.
3. a kind of electric expansion valve according to claim 1, is characterized in that: described inclined plane is the conical surface (5111) that stage portion top loop is arranged around whole stage portion circumference.
4. a kind of electric expansion valve according to claim 4, is characterized in that: described bending segment (1212) is in L-type.
5. a kind of electric expansion valve according to any one of Claims 1-4, is characterized in that: the stop afterbody of Sealing shield ring (4) is provided with the protuberance (41) outstanding to Sealing shield ring outer circumferential sides.
6. a kind of electric expansion valve according to claim 1, it is characterized in that: described stage portion is provided with connecting plate (52), the cylindrical of described connecting plate is provided with gap slot (520), and bending segment (1212) end is hooked on gap slot (520) place of connecting plate.
7. a kind of electric expansion valve according to claim 1, is characterized in that: under described spring guide rail, the angle of inclination of the tilting section (1211) of retainer is greater than the angle of inclination of the inclined plane of nut stage portion.
8. a kind of electric expansion valve according to claim 7, is characterized in that: large compared with the angle of inclination of the inclined plane of nut stage portion 3 ° ~ 5 ° of the angle of inclination of the tilting section (1211) of retainer under described spring guide rail.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410106076.2A CN104930764B (en) | 2014-03-21 | 2014-03-21 | A kind of electric expansion valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410106076.2A CN104930764B (en) | 2014-03-21 | 2014-03-21 | A kind of electric expansion valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104930764A true CN104930764A (en) | 2015-09-23 |
| CN104930764B CN104930764B (en) | 2018-11-30 |
Family
ID=54118042
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410106076.2A Active CN104930764B (en) | 2014-03-21 | 2014-03-21 | A kind of electric expansion valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104930764B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020228651A1 (en) * | 2019-05-10 | 2020-11-19 | 浙江盾安人工环境股份有限公司 | Nut assembly for electronic expansion valve, electronic expansion valve, and limiting element mounting method |
| CN112824689A (en) * | 2019-11-21 | 2021-05-21 | 盾安环境技术有限公司 | Nut assembly and electronic expansion valve |
| WO2023165331A1 (en) * | 2022-03-04 | 2023-09-07 | 浙江盾安人工环境股份有限公司 | Nut assembly and electronic expansion valve |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000220759A (en) * | 1999-02-02 | 2000-08-08 | Chiyoda Kucho Kiki Kk | Electric control valve |
| JP2003222260A (en) * | 2002-01-29 | 2003-08-08 | Saginomiya Seisakusho Inc | Electric control valve |
| CN102454819A (en) * | 2010-10-15 | 2012-05-16 | 浙江三花股份有限公司 | Electric valve and stopping device thereof |
| CN103375624A (en) * | 2012-04-17 | 2013-10-30 | 浙江三花股份有限公司 | Electric valve and arresting device thereof |
| CN103575000A (en) * | 2012-08-10 | 2014-02-12 | 浙江三花股份有限公司 | Electronic expansion valve |
-
2014
- 2014-03-21 CN CN201410106076.2A patent/CN104930764B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000220759A (en) * | 1999-02-02 | 2000-08-08 | Chiyoda Kucho Kiki Kk | Electric control valve |
| JP2003222260A (en) * | 2002-01-29 | 2003-08-08 | Saginomiya Seisakusho Inc | Electric control valve |
| CN102454819A (en) * | 2010-10-15 | 2012-05-16 | 浙江三花股份有限公司 | Electric valve and stopping device thereof |
| CN103375624A (en) * | 2012-04-17 | 2013-10-30 | 浙江三花股份有限公司 | Electric valve and arresting device thereof |
| CN103575000A (en) * | 2012-08-10 | 2014-02-12 | 浙江三花股份有限公司 | Electronic expansion valve |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020228651A1 (en) * | 2019-05-10 | 2020-11-19 | 浙江盾安人工环境股份有限公司 | Nut assembly for electronic expansion valve, electronic expansion valve, and limiting element mounting method |
| KR20210150456A (en) * | 2019-05-10 | 2021-12-10 | 제지앙 둔안 아트피셜 인바이런먼트 컴퍼니 리미티드 | How to mount the nut assembly of the electromagnetic expansion valve, the electromagnetic expansion valve and the position limiting member |
| EP3964738A4 (en) * | 2019-05-10 | 2022-06-29 | Zhejiang Dunan Artificial Environment Co., Ltd. | Nut assembly for electronic expansion valve, electronic expansion valve, and limiting element mounting method |
| KR102572481B1 (en) | 2019-05-10 | 2023-08-30 | 제지앙 둔안 아트피셜 인바이런먼트 컴퍼니 리미티드 | How to mount the nut assembly of the electronic expansion valve, the electronic expansion valve and the position limiting member |
| US11946555B2 (en) | 2019-05-10 | 2024-04-02 | Zhejiang Dunan Artificial Environment Co., Ltd. | Nut assembly for electronic expansion valve, electronic expansion valve, and limiting element mounting method |
| CN112824689A (en) * | 2019-11-21 | 2021-05-21 | 盾安环境技术有限公司 | Nut assembly and electronic expansion valve |
| CN112824689B (en) * | 2019-11-21 | 2022-05-13 | 盾安环境技术有限公司 | Nut assembly and electronic expansion valve |
| WO2023165331A1 (en) * | 2022-03-04 | 2023-09-07 | 浙江盾安人工环境股份有限公司 | Nut assembly and electronic expansion valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104930764B (en) | 2018-11-30 |
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