CN2747424Y - Electronic expansion valve - Google Patents
Electronic expansion valve Download PDFInfo
- Publication number
- CN2747424Y CN2747424Y CN200420107866.4U CN200420107866U CN2747424Y CN 2747424 Y CN2747424 Y CN 2747424Y CN 200420107866 U CN200420107866 U CN 200420107866U CN 2747424 Y CN2747424 Y CN 2747424Y
- Authority
- CN
- China
- Prior art keywords
- valve
- valve seat
- nut
- screw rod
- needle
- 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.)
- Ceased
Links
- 239000012530 fluid Substances 0.000 abstract description 7
- 238000005516 engineering process Methods 0.000 abstract description 5
- 239000003507 refrigerant Substances 0.000 abstract description 2
- 230000001105 regulatory effect Effects 0.000 abstract description 2
- 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
- 239000000243 solution Substances 0.000 description 1
Images
Classifications
-
- 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
- Electrically Driven Valve-Operating Means (AREA)
Abstract
本实用新型涉及一种调节冷媒流量的电子膨胀阀。现有的电子膨胀阀使阀针和阀口的结构复杂化，加工复杂，会带来流体噪音，还增加了阀针与阀座间的配合关系。对大口径阀来说，还存在流量瓶颈的问题。本实用新型包括阀体、套在阀体上的线圈和连接在阀体下部的阀座，位于阀体内的磁转子、丝杆和连接在丝杆上的螺母，阀座上开有阀座室和与其相通的阀口，其特征是所述的丝杆设置在磁转子的中上部，使磁转子形成上、下两室，丝杆在全闭时其下部位于阀座室内，螺母的几何中心低于磁转子的几何中心。本实用新型简化了结构和加工工艺，降低了流体噪音，省去了阀针与阀座间的配合关系；避免了大口径阀流量偏小的瓶颈现象。
The utility model relates to an electronic expansion valve for regulating refrigerant flow. The existing electronic expansion valve complicates the structure of the valve needle and the valve port, complicates the processing, causes fluid noise, and increases the matching relationship between the valve needle and the valve seat. For large-diameter valves, there is also the problem of flow bottlenecks. The utility model comprises a valve body, a coil sleeved on the valve body and a valve seat connected to the lower part of the valve body, a magnetic rotor located in the valve body, a screw rod and a nut connected to the screw rod, and a valve seat chamber is opened on the valve seat And the valve port communicating with it is characterized in that the screw rod is arranged in the middle and upper part of the magnetic rotor, so that the magnetic rotor forms upper and lower chambers. When the screw rod is fully closed, its lower part is located in the valve seat chamber, and the geometric center of the nut Below the geometric center of the magnetic rotor. The utility model simplifies the structure and processing technology, reduces the fluid noise, omits the matching relationship between the valve needle and the valve seat, and avoids the bottleneck phenomenon that the flow rate of the large-diameter valve is too small.
Description
Technical field
The utility model 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.
The model utility content
Technical problem to be solved in the utility model 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.
The technical solution of the utility model 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 utility model 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 utility model 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
Below in conjunction with drawings and Examples the utility model is further described.
Fig. 1 is the structural representation of existing electric expansion valve.
Fig. 2 is a structural representation of the present utility model.
Embodiment
As shown in Figure 2, the utility model comprises 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)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200420107866.4U CN2747424Y (en) | 2004-10-28 | 2004-10-28 | Electronic expansion valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200420107866.4U CN2747424Y (en) | 2004-10-28 | 2004-10-28 | Electronic expansion valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2747424Y true CN2747424Y (en) | 2005-12-21 |
Family
ID=35707963
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200420107866.4U Ceased CN2747424Y (en) | 2004-10-28 | 2004-10-28 | Electronic expansion valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2747424Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101825184A (en) * | 2010-05-11 | 2010-09-08 | 浙江盾安禾田金属有限公司 | Welding structure of small shaft and cover board of electronic expansion valve and electronic expansion valve |
| CN102261774A (en) * | 2010-05-28 | 2011-11-30 | 浙江三花股份有限公司 | Electric valve |
| CN104806774A (en) * | 2014-01-26 | 2015-07-29 | 杭州三花研究院有限公司 | Electronic expansion valve |
| CN113446403A (en) * | 2020-03-27 | 2021-09-28 | 浙江三花智能控制股份有限公司 | Electronic expansion valve |
-
2004
- 2004-10-28 CN CN200420107866.4U patent/CN2747424Y/en not_active Ceased
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101825184A (en) * | 2010-05-11 | 2010-09-08 | 浙江盾安禾田金属有限公司 | Welding structure of small shaft and cover board of electronic expansion valve and electronic expansion valve |
| CN101825184B (en) * | 2010-05-11 | 2012-08-29 | 浙江盾安禾田金属有限公司 | Welding structure of small shaft and cover board of electronic expansion valve and electronic expansion valve |
| CN102261774A (en) * | 2010-05-28 | 2011-11-30 | 浙江三花股份有限公司 | Electric valve |
| CN104806774A (en) * | 2014-01-26 | 2015-07-29 | 杭州三花研究院有限公司 | Electronic expansion valve |
| CN113446403A (en) * | 2020-03-27 | 2021-09-28 | 浙江三花智能控制股份有限公司 | Electronic expansion valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C35 | Partial or whole invalidation of patent or utility model | ||
| IW01 | Full invalidation of patent right |
Decision date of declaring invalidation: 20110714 Decision number of declaring invalidation: 16910 Granted publication date: 20051221 |