CN1766377A - Electronic expansion valve - Google Patents
Electronic expansion valve Download PDFInfo
- Publication number
- CN1766377A CN1766377A CN 200410067560 CN200410067560A CN1766377A CN 1766377 A CN1766377 A CN 1766377A CN 200410067560 CN200410067560 CN 200410067560 CN 200410067560 A CN200410067560 A CN 200410067560A CN 1766377 A CN1766377 A CN 1766377A
- Authority
- CN
- China
- Prior art keywords
- valve
- nut
- magnet rotor
- screw mandrel
- valve seat
- 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.)
- Pending
Links
- 239000002826 coolant Substances 0.000 abstract 1
- 230000013011 mating Effects 0.000 abstract 1
- 239000012530 fluid Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 230000005484 gravity Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- BGOFCVIGEYGEOF-UJPOAAIJSA-N helicin Chemical compound O[C@@H]1[C@@H](O)[C@H](O)[C@@H](CO)O[C@H]1OC1=CC=CC=C1C=O BGOFCVIGEYGEOF-UJPOAAIJSA-N 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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- Electrically Driven Valve-Operating Means (AREA)
Abstract
The invention discloses an electronic expansion valve of coolant flow adjustment, which comprises the following parts: valve body, coil covered on the valve body, valve seat under the valve body, magnetic rotor and lead screw in the valve body, nut on the lead screw and valve opening in connection with the valve seat chamber, wherein the lead screw is set between the middle and top of magnetic rotor, which divides the magnetic rotor into upper and lower chambers; when the lead screw is closed completely, the bottom lies in the valve seat chamber; the geometrical center is lower than magnetic rotor's. The invention saves the mating relationship between valve needle and valve seat, which avoids the bottleneck phenomenon due to little flow of big diameter valve.
Description
Technical field
The present invention relates to the parts of idle call, specifically a kind of electric expansion valve of regulating cold medium flux.
Background technique
Present electric expansion valve as shown in Figure 1, comprise valve body 1 ', be enclosed within coil (not shown) and the valve seat 2 ' that is connected valve body lower portion on the valve body, be positioned at the magnet rotor 3 ' of valve body, screw mandrel 4 ' and the nut 5 ' that is connected on the screw mandrel, the valve port 7 ' that has valve seat chamber 6 ' on the valve seat and communicate with it, the geometrical center basically identical of the geometrical center of nut 5 ' and magnet rotor 3 ', nut is to provide guiding preferably for magnet rotor with cooperating of screw mandrel, but the geometrical center of nut is far away from valve port, caused needle 8 ' longer, the freedom from vibration of needle is poor, easily causes the valve port wearing and tearing.And solve the technological scheme that needle freedom from vibration difference adopted at present is by adding a little elongated guiding aperture (not shown) on needle 8 ', providing guide function to needle; Because existing valve seat chamber is a hole that radially is provided with, its inwall that processes is a curved surface, and valve port top must be provided with counterbore 9 ' and form step, and the upper-end surface that could guarantee valve port is the plane.Make the structure complicated of needle and valve port like this, processed complex can bring fluid noise, has also increased the matching relationship of needle and valve base chamber.But do not shorten needle length and valve body height yet, brought safe hidden danger for the reliable movement of valve.Concerning the heavy caliber valve, because also there is the problem of flow bottleneck in counterbore.
Summary of the invention
Technical problem to be solved by this invention is to overcome the defective that above-mentioned prior art exists, provide a kind of in order to reduce the electric expansion valve that magnet rotor center of gravity and nut geometrical center are lower than the magnet rotor geometrical center, make nut and cooperating of screw mandrel produce guiding to magnet rotor, also can produce leading role to needle, simplified structure and processing technology when reducing the valve port wearing and tearing reduce fluid noise; Reduce the valve body height simultaneously, improve the reliable in action of valve, realize the electric expansion valve miniaturization.
Technological scheme of the present invention is as follows: electric expansion valve, comprise valve body, be enclosed within the coil on the valve body and be connected the valve seat of valve body lower portion, be positioned at magnet rotor, the screw mandrel of valve body and be connected nut on the screw mandrel, the valve port that has the valve seat chamber on the valve seat and communicate with it, it is characterized in that described screw mandrel is arranged on the middle and upper part of magnet rotor, make magnet rotor form upper and lower two Room, it is indoor that screw mandrel its underpart when full cut-off is positioned at valve seat, and the geometrical center of nut is lower than the geometrical center of magnet rotor.The present invention is divided into upper and lower two Room with magnet rotor, has reduced the center of gravity of magnet rotor, thereby makes that nut can provide good leading role to magnet rotor with cooperating still of screw mandrel under the geometrical center situation on the lower side of geometrical center than magnet rotor of nut.Simultaneously, because the geometrical center of nut is lower than the geometrical center of magnet rotor, and screw mandrel its hypomere when full cut-off extend in the valve chamber, shortened needle length, so pilot hole must be set separately on needle, directly lean on screw mandrel and guarantee that needle does not tilt cooperating of nut, provide leading role, promptly prevented the deflection and the vibration of valve body to needle.When reducing the valve port wearing and tearing, simplify the structure and processing technology, reduced fluid noise, saved the matching relationship of needle and valve base chamber; Reduce the height of valve body simultaneously, improved the reliable in action of valve, realized the electric expansion valve miniaturization.
Described electric expansion valve, described valve seat chamber is a cylindrical hole along axial direction, its bottom surface that processes is the plane, so valve port can be set directly on the plane of bottom surface, valve seat chamber, can remove the valve port top counterbore in original technology, on the basis of not setting up part, make flow passage structure simplify, reduced fluid (refrigerant) noise, avoided the heavy caliber valve flow bottleneck less than normal that causes by counterbore.
Described electric expansion valve, the screw thread that is connected with nut on the screw mandrel of usefulness stretches out in outside the nut, guarantees valve when standard-sized sheet, and nut still has leading role preferably with cooperating of screw mandrel to magnet rotor.
Center of gravity and the geometrical center that the make nut geometrical center that be lower than magnet rotor of the present invention by reducing magnet rotor, make nut and cooperating of screw mandrel produce guiding to magnet rotor, also can produce guiding to needle, has following beneficial effect: 1) when reducing the valve port wearing and tearing, simplify the structure and processing technology, reduce fluid noise, saved the matching relationship of needle and valve base chamber; 2) shorten the length of needle, reduced the height of valve body, realized the miniaturization of electric expansion valve, obviously improved the reliable in action of valve; 3) guarantee valve when standard-sized sheet, nut still has leading role preferably with cooperating of screw mandrel to magnet rotor; 4) avoided heavy caliber valve flow bottleneck less than normal.
Description of drawings
The present invention is further illustrated below in conjunction with drawings and Examples.
Fig. 1 is the structural representation of existing electric expansion valve.
Fig. 2 is a structural representation of the present invention.
Embodiment
As shown in Figure 2, the present invention includes valve body 1, be enclosed within the coil 2 on the valve body and be connected the valve seat 3 of valve body lower portion, be positioned at the magnet rotor 4 and the screw mandrel 5 of valve body, the valve port 8 that has valve seat chamber 7 on the valve seat 3 and communicate with it, described screw mandrel 5 is arranged on the middle and upper part of magnet rotor 4, screw mandrel 5 is connected with magnet rotor 4 direct injection mouldings, and magnet rotor 4 is divided into upper and lower two Room 4a, 4b, and screw mandrel 5 is positioned at valve seat chamber 7 in its underpart when valve port 8 full cut-offs.Screw mandrel 5 constitutes unsteady be connected with circular needle cover 10 with needle 11 by spiral helicine spring 9.
Driving magnet rotor 4 under the driving of stepper motor coil rotates.Keep nut 6 in the following chamber 4b of magnet rotor 4, and nut 6 is fixed in the hole of 7 tops, valve seat chamber, this hole communicates with valve seat chamber 7.Female screw thread 6b on the nut 6 and light section 6a cooperate the leading role that forms magnet rotor with male screw thread 5b and light section 5a on the screw mandrel 5.Female screw thread 6b on the nut and the male screw thread 5b on the screw mandrel screw togather simultaneously, the circular movement of magnet rotor 4 are converted into the straight line motion of needle 11.
Because the geometrical center of nut 6 is lower than the geometrical center of magnet rotor 4, and screw mandrel 5 its hypomere when valve port 8 full cut-offs extend in the valve seat chamber 7, shortened needle length, pilot hole must be set separately on the needle, directly lean on screw mandrel and guarantee that needle does not tilt cooperating of nut, when reducing the valve port wearing and tearing, needle is produced leading role.The valve seat chamber is the cylindrical hole along the valve axis direction, and its bottom surface is the plane.The screw thread that is connected with nut on the screw mandrel of usefulness stretches out in outside the nut, guarantees that valve port when standard-sized sheet, still has leading role preferably to magnet rotor.
Claims (3)
1, electric expansion valve, comprise valve body (1), be enclosed within the coil (2) on the valve body and be connected the valve seat (3) of valve body lower portion, be positioned at magnet rotor (4), the screw mandrel (5) of valve body and be connected nut (6) on the screw mandrel, the valve port (8) that has valve seat chamber (7) on the valve seat (3) and communicate with it, it is characterized in that described screw mandrel (5) is arranged on the middle and upper part of magnet rotor (4), make magnet rotor (4) form upper and lower two Room (4a, 4b), screw mandrel (5) its underpart when full cut-off is positioned at valve seat chamber (7), and the geometrical center of nut (6) is lower than the geometrical center of magnet rotor (4).
2, electric expansion valve according to claim 1 is characterized in that described valve seat chamber (7) is a cylindrical hole along axial direction, and its bottom surface is the plane.
3, electric expansion valve according to claim 1 and 2, the screw thread (5b) that it is characterized in that being connected with nut (6) on the screw mandrel of usefulness stretches out in outside the nut (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410067560 CN1766377A (en) | 2004-10-28 | 2004-10-28 | Electronic expansion valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410067560 CN1766377A (en) | 2004-10-28 | 2004-10-28 | Electronic expansion valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1766377A true CN1766377A (en) | 2006-05-03 |
Family
ID=36742426
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410067560 Pending CN1766377A (en) | 2004-10-28 | 2004-10-28 | Electronic expansion valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1766377A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101988582A (en) * | 2009-08-05 | 2011-03-23 | 浙江三花股份有限公司 | Electronic expansion valve structure |
| CN102278841A (en) * | 2011-07-28 | 2011-12-14 | 浙江盾安禾田金属有限公司 | Method for preventing valve core position of electronic expansion valve from offsetting and corresponding protective cover |
| WO2012037830A1 (en) * | 2010-09-20 | 2012-03-29 | 浙江三花股份有限公司 | Electronic expansion valve |
| CN102589205A (en) * | 2011-01-11 | 2012-07-18 | 浙江三花股份有限公司 | Electronic expansion valve |
| CN101994839B (en) * | 2009-08-10 | 2012-10-03 | 浙江三花股份有限公司 | Electric control valve |
| CN103574062A (en) * | 2012-08-06 | 2014-02-12 | 珠海格力电器股份有限公司 | Electronic expansion valve |
| CN103867770A (en) * | 2012-12-11 | 2014-06-18 | 浙江盾安禾田金属有限公司 | Electrically operated valve |
| CN105650337A (en) * | 2014-11-13 | 2016-06-08 | 浙江三花股份有限公司 | Electronic expansion valve |
| CN107435754A (en) * | 2016-05-26 | 2017-12-05 | 株式会社不二工机 | Flow control valve |
| JP2022169612A (en) * | 2019-09-03 | 2022-11-09 | 株式会社鷺宮製作所 | Electric valve and refrigeration cycle system |
-
2004
- 2004-10-28 CN CN 200410067560 patent/CN1766377A/en active Pending
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101988582A (en) * | 2009-08-05 | 2011-03-23 | 浙江三花股份有限公司 | Electronic expansion valve structure |
| CN101994839B (en) * | 2009-08-10 | 2012-10-03 | 浙江三花股份有限公司 | Electric control valve |
| WO2012037830A1 (en) * | 2010-09-20 | 2012-03-29 | 浙江三花股份有限公司 | Electronic expansion valve |
| CN102589205A (en) * | 2011-01-11 | 2012-07-18 | 浙江三花股份有限公司 | Electronic expansion valve |
| CN102278841A (en) * | 2011-07-28 | 2011-12-14 | 浙江盾安禾田金属有限公司 | Method for preventing valve core position of electronic expansion valve from offsetting and corresponding protective cover |
| CN102278841B (en) * | 2011-07-28 | 2013-04-17 | 浙江盾安禾田金属有限公司 | Method for preventing valve core position of electronic expansion valve from deviation and corresponding protective cover |
| CN103574062A (en) * | 2012-08-06 | 2014-02-12 | 珠海格力电器股份有限公司 | Electronic expansion valve |
| CN103574062B (en) * | 2012-08-06 | 2016-10-05 | 珠海格力电器股份有限公司 | Electronic expansion valve |
| CN103867770A (en) * | 2012-12-11 | 2014-06-18 | 浙江盾安禾田金属有限公司 | Electrically operated valve |
| CN103867770B (en) * | 2012-12-11 | 2017-08-11 | 浙江盾安禾田金属有限公司 | A kind of motor-driven valve |
| CN105650337A (en) * | 2014-11-13 | 2016-06-08 | 浙江三花股份有限公司 | Electronic expansion valve |
| JP2017534822A (en) * | 2014-11-13 | 2017-11-24 | 浙江三花智能控制股▲ふん▼有限公司 | Electronic expansion valve |
| CN107435754A (en) * | 2016-05-26 | 2017-12-05 | 株式会社不二工机 | Flow control valve |
| JP2022169612A (en) * | 2019-09-03 | 2022-11-09 | 株式会社鷺宮製作所 | Electric valve and refrigeration cycle system |
| JP7317191B2 (en) | 2019-09-03 | 2023-07-28 | 株式会社鷺宮製作所 | Electric valve and refrigeration cycle system |
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Legal Events
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |