CN203516797U - Electronic expansion valve - Google Patents
Electronic expansion valve Download PDFInfo
- Publication number
- CN203516797U CN203516797U CN201320670031.9U CN201320670031U CN203516797U CN 203516797 U CN203516797 U CN 203516797U CN 201320670031 U CN201320670031 U CN 201320670031U CN 203516797 U CN203516797 U CN 203516797U
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- Prior art keywords
- chamber
- liquid
- expansion valve
- electric expansion
- valve body
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- Expired - Lifetime
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- 239000007788 liquid Substances 0.000 claims abstract description 67
- 238000002955 isolation Methods 0.000 claims description 6
- 238000009434 installation Methods 0.000 abstract description 3
- 230000007306 turnover Effects 0.000 abstract 1
- 239000003507 refrigerant Substances 0.000 description 8
- 230000033001 locomotion Effects 0.000 description 6
- 230000008901 benefit Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 2
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 208000002925 dental caries Diseases 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000005520 electrodynamics Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000010587 phase diagram Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
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- Electrically Driven Valve-Operating Means (AREA)
Abstract
The utility model provides an electronic expansion valve, which comprises a valve body, wherein a first cavity is formed in the valve body, a liquid inlet and a liquid outlet are arranged at two ends of the valve body relatively, and the liquid inlet and the liquid outlet are coaxially arranged along the central axis of the valve body; the coil is sleeved outside the cavity wall of the first cavity; the inlet end of the second chamber is communicated with the liquid inlet, the outlet end of the second chamber is communicated with the liquid outlet, and the inlet end of the second chamber and the outlet end of the second chamber are coaxially arranged; a valve core which can move along the central axis is arranged in the second chamber; and the first liquid channel hole is arranged on the wall of the second chamber, and the first chamber is communicated with the liquid inlet through the first liquid channel hole. Through keeping liquid moving direction and liquid business turn over valve body direction in the valve body on a straight line, can effectively reduce liquid flow resistance and on-the-way loss of pressure, can solve the noise problem simultaneously, the installation is simple, saves the cost, improves the efficiency.
Description
Technical field
The utility model relates to flow control field, especially, relates to a kind of electric expansion valve.
Background technique
Electric expansion valve as throttle element because its reaction velocity is fast, accurately, the application of precision advantages of higher in air-conditioner refrigerating system be increasingly extensive.In existing electronic expansion valve structure, refrigerant intake channel and outlet pipe are 90 °, therefore generally can only be arranged on air conditioner outdoor machine unit or indoor unit.For multi-connected machine system, it is inner or external to installing in box from the not far special use of interior machine that electric expansion valve is arranged on refrigeration system indoor set mostly, has following problem: when electric expansion valve is built in indoor set, noise is large, take up space large, efficiency of assembling is low.In the time of in the external mounting box outside indoor set of electric expansion valve, affect attractive in appearancely, installation and maintenance cost is high.Existing electric expansion valve refrigerant exit and Way in are generally 90 °, flow resistance and large along stroke pressure loss.
Model utility content
The utility model object is to provide a kind of electric expansion valve, to solve existing electric expansion valve liquid along the larger technical problem of stroke pressure loss.
For achieving the above object, the utility model provides a kind of electric expansion valve, comprises valve body, forms the first chamber in valve body, and the two ends of valve body are relatively set with liquid inlet and liquid outlet, and liquid inlet and liquid outlet coaxially arrange along the central axis of valve body; Coil, is set in the chamber wall outside of the first chamber; The second chamber, is arranged in the first chamber, and the entrance point of the second chamber is connected with liquid inlet, and the outlet end of the second chamber is connected with liquid outlet, and the outlet end of the entrance point of the second chamber and the second chamber coaxially arranges; In the second chamber, be provided with along central axis spool movably; First liquid port hole, is arranged on the chamber wall of the second chamber, and the first chamber is connected with liquid inlet by first liquid port hole.
Further, on spool, be provided with and be parallel to the second liquid port hole that central axis extends.
Further, also comprise stator and rotor in relative rotation, stator is arranged on outside the second chamber, and spool is connected to rotate with rotor relative stator with rotor.
Further, rotor is permanent magnet rotor.
Further, stator and rotor thread engagement.
Further, coil is open coil.
Further, coil is provided with isolation layer.
Further, also comprise end casing, spool is connected by end casing with rotor.
Further, also comprise controller, electrical current size and the time of controller control coil.
Further, in liquid inlet and liquid outlet, be provided with filter.
The utlity model has following beneficial effect:
By liquid movement direction and liquid inlet-outlet valve body direction in valve body are kept point-blank, can effectively reduce liquid flowing resistance and along stroke pressure loss, can solve noise problem simultaneously, install simply, save cost, improve efficiency.
Except object described above, feature and advantage, the utility model also has other object, feature and advantage.Below with reference to figure, the utility model is described in further detail.
Accompanying drawing explanation
The accompanying drawing that forms the application's a part is used to provide further understanding of the present utility model, and schematic description and description of the present utility model is used for explaining the utility model, does not form improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 be while not working according to the embodiment of embodiment's electric expansion valve of the present utility model needle in normally off schematic diagram;
Fig. 2 is according to the cross-sectional schematic of embodiment's spool of electric expansion valve of the present utility model;
Fig. 3 is according to the schematic diagram of embodiment's coil of electric expansion valve of the present utility model; And
Fig. 4 is the embodiment's flow direction schematic diagram according to electric expansion valve of the present utility model.
Reference character in accompanying drawing is as follows: 10, valve body; 11, liquid inlet; 12, liquid outlet; 20, coil; 21, stator; 22, rotor; 23, end casing; 24, lead-in wire interface; 25, isolation layer; 26, fixed structure; 31, spool; 311, second liquid port hole; 32, first liquid port hole.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is elaborated, but the multitude of different ways that the utility model can be defined by the claims and cover is implemented.
Referring to Fig. 1 to Fig. 4, according to electric expansion valve of the present utility model, comprise valve body 10, interior formation the first chamber of valve body 10, the two ends of valve body 10 are relatively set with liquid inlet 11 and liquid outlet 12, and liquid inlet 11 and liquid outlet 12 coaxially arrange along the central axis of valve body 10; Coil 20, is set in the chamber wall outside of the first chamber; The second chamber, is arranged in the first chamber, and the entrance point of the second chamber is connected with liquid inlet 11, and the outlet end of the second chamber is connected with liquid outlet 12, and the outlet end of the entrance point of the second chamber and the second chamber coaxially arranges; In the second chamber, be provided with along central axis spool 31 movably; First liquid port hole 32, is arranged on the chamber wall of the second chamber, and the first chamber is connected with liquid inlet 11 by first liquid port hole 32.
A kind of straight-through electronic expansion valve of electric expansion valve of the present utility model.Straight-through structure can be directly installed in air-conditioning refrigeration system indoor and outdoor machine connecting tube; Spool 31 movement directions and refrigerant are imported and exported and are flowed on same straight line; Flow more steady, more even, comprise unidirectional and two-way flow mode.Its inlet duct with on outer pipe, have the structure that is connected with copper pipe as " loudspeaker enlarging ", pipe nut, pipe joint, also comprise directly and copper pipe realization is welded to connect.As the other one end of pipe joint is set in electric expansion valve one end, " loudspeaker enlarging " structure etc. is set.It can be arranged in air conditioning chamber's connection pipe for internal-external unit.By liquid movement direction and liquid inlet-outlet valve body direction in valve body are kept point-blank, can effectively reduce liquid flowing resistance and along stroke pressure loss, can solve noise problem simultaneously, install simply, save cost, improve efficiency.
Referring to Fig. 1 to Fig. 4, on spool 31, be provided with and be parallel to the second liquid port hole 311 that central axis extends.Spool 31 major characters: second liquid port hole 311, spool 31 cavitys.Second liquid port hole 311 on spool 31 conical surfaces is communicated with refrigerant inlet duct and spool 31 cavitys.Advantage, one is when spool 31 is when opening, and refrigerant can enter spool 31 inside by second liquid port hole 311, and balance valve core 31 pressure at two ends, reduce spool 31 moving resistances and the impact of refrigerant to spool 31 rapidly, make spool 31 motions more steady.It two can be used as refrigerant circulation passage, and because it flows for straight line type, energy loss is minimum, and noise is lower.Second liquid port hole 311 is preferentially arranged symmetrically with, 2 to 4 of quantity.
Referring to Fig. 1, electric expansion valve also comprises controller, electrical current size and the time of controller control coil 20.Electric expansion valve also comprises stator 21 and rotor 22 in relative rotation, stator 21 be arranged on the second chamber outside, spool 31 is connected with rotor 22 and rotates with rotor 22 relative stator 21.Rotor 22 is permanent magnet rotor.Stator 21 and rotor 22 thread engagement.Electric expansion valve also comprises end casing 23, and spool 31 is connected by end casing 23 with rotor 22.Fig. 1 be electric expansion valve spool 31 is not in normally closed phase diagram while not working, spool 31 driving mode adopt electrodynamic types to drive.Its working procedure: when electric expansion valve is not worked, coil 20 power-off, spool 31 under screw thread self-locking effect in closed condition.When system needs electric expansion valve to carry out Flow-rate adjustment, coil 20 energisings, the pulsed voltage of control circuit is applied on coil 20 according to certain logical relation, the rotor 22 that permanent magnet is made is rotatablely moved by electromagnetic torque effect generation forward or backwards, by the transmission of screw thread, make spool 31 advance or retreat, change the aperture of valve port, thereby regulate the flow of liquid.
Referring to Fig. 3, coil of electronic expansion valve can be open and closed.Preferably, coil 20 is open coil.Coil 20 is provided with isolation layer.Open coil comprises lead-in wire interface 24, isolation layer 25, fixed structure 26.Open architecture can in electric expansion valve using process, more emat coil be simple and convenient.Isolation layer preferred rubber or plastics.When needs are more during emat coil, utilize the resiliently deformable of rubber or plastics to open coil, be enclosed within on electronic expansion valve shell, then aim at coil interface, utilize fixed structure 26 locking coils.
Referring to Fig. 1 and Fig. 4, in liquid inlet 11 and liquid outlet 12, be provided with filter.Concrete, on its inlet duct and outer pipe, there is filter for installation, to realize refrigerant and filter, filtrating equipment also can be arranged in the pipeline being connected with electric expansion valve.
Referring to Fig. 1 and Fig. 4, wherein threaded stator 21 is fixed on valve body 10.Spool 31 is fixed together by end casing 23 and permanent magnet rotor 22 assemblies.Permanent magnet rotor 22 assemblies and threaded stator 21 are realized the movement of spool 31 by screw thread transmission.
As can be seen from the above description, the utility model the above embodiments have realized following technique effect:
By liquid movement direction and liquid inlet-outlet valve body direction in valve body are kept point-blank, can effectively reduce liquid flowing resistance and along stroke pressure loss, can solve noise problem simultaneously, install simply, save cost, improve efficiency.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (10)
1. an electric expansion valve, is characterized in that, comprising:
Valve body (10), in described valve body (10), form the first chamber, the two ends of described valve body (10) are relatively set with liquid inlet (11) and liquid outlet (12), and described liquid inlet (11) and described liquid outlet (12) coaxially arrange along the central axis of described valve body (10);
Coil (20), is set in the chamber wall outside of described the first chamber;
The second chamber, be arranged in described the first chamber, the entrance point of described the second chamber is connected with described liquid inlet (11), and the outlet end of described the second chamber is connected with described liquid outlet (12), and the outlet end of the entrance point of described the second chamber and described the second chamber coaxially arranges;
In described the second chamber, be provided with along described central axis spool (31) movably;
First liquid port hole (32), is arranged on the chamber wall of described the second chamber, and described the first chamber is connected with described liquid inlet (11) by described first liquid port hole (32).
2. electric expansion valve according to claim 1, is characterized in that, is provided with and is parallel to the second liquid port hole (311) that described central axis extends on described spool (31).
3. electric expansion valve according to claim 1 and 2, it is characterized in that, also comprise stator (21) and rotor (22) in relative rotation, described stator (21) is arranged on outside described the second chamber, and described spool (31) is connected to rotate relative to described stator (21) with described rotor (22) with described rotor (22).
4. electric expansion valve according to claim 3, is characterized in that, described rotor (22) is permanent magnet rotor.
5. electric expansion valve according to claim 3, is characterized in that, described stator (21) and described rotor (22) thread engagement.
6. electric expansion valve according to claim 1, is characterized in that, described coil (20) is open coil.
7. electric expansion valve according to claim 6, is characterized in that, described coil (20) is provided with isolation layer (25).
8. electric expansion valve according to claim 3, is characterized in that, also comprises end casing (23), and described spool (31) is connected by end casing (23) with described rotor (22).
9. electric expansion valve according to claim 1, is characterized in that, also comprises controller, and described controller is controlled electrical current size and the time of described coil (20).
10. electric expansion valve according to claim 1, is characterized in that, in described liquid inlet (11) and described liquid outlet (12), is provided with filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320670031.9U CN203516797U (en) | 2013-10-28 | 2013-10-28 | Electronic expansion valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320670031.9U CN203516797U (en) | 2013-10-28 | 2013-10-28 | Electronic expansion valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203516797U true CN203516797U (en) | 2014-04-02 |
Family
ID=50375729
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320670031.9U Expired - Lifetime CN203516797U (en) | 2013-10-28 | 2013-10-28 | Electronic expansion valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203516797U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015062422A1 (en) * | 2013-10-28 | 2015-05-07 | 珠海格力电器股份有限公司 | Electronic expansion valve |
| CN104567138B (en) * | 2013-10-28 | 2017-02-08 | 珠海格力电器股份有限公司 | Electronic expansion valve |
| CN106415160A (en) * | 2014-06-04 | 2017-02-15 | 丹佛斯有限公司 | Electronic expansion valve and methods for calibrating an electronic expansion valve |
| WO2017101878A1 (en) * | 2015-12-19 | 2017-06-22 | 浙江三花智能控制股份有限公司 | Two-section electronic expansion valve |
-
2013
- 2013-10-28 CN CN201320670031.9U patent/CN203516797U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015062422A1 (en) * | 2013-10-28 | 2015-05-07 | 珠海格力电器股份有限公司 | Electronic expansion valve |
| CN104567138B (en) * | 2013-10-28 | 2017-02-08 | 珠海格力电器股份有限公司 | Electronic expansion valve |
| US10119735B2 (en) | 2013-10-28 | 2018-11-06 | Gree Electric Appliances, Inc. Of Zhuhai | Electronic expansion valve |
| CN106415160A (en) * | 2014-06-04 | 2017-02-15 | 丹佛斯有限公司 | Electronic expansion valve and methods for calibrating an electronic expansion valve |
| CN106415160B (en) * | 2014-06-04 | 2019-08-30 | 丹佛斯有限公司 | Electric expansion valve and method for calibrating electric expansion valve |
| WO2017101878A1 (en) * | 2015-12-19 | 2017-06-22 | 浙江三花智能控制股份有限公司 | Two-section electronic expansion valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |