CN203810807U - Electronic expansion valve - Google Patents
Electronic expansion valve Download PDFInfo
- Publication number
- CN203810807U CN203810807U CN201420238068.9U CN201420238068U CN203810807U CN 203810807 U CN203810807 U CN 203810807U CN 201420238068 U CN201420238068 U CN 201420238068U CN 203810807 U CN203810807 U CN 203810807U
- Authority
- CN
- China
- Prior art keywords
- expansion valve
- motor
- installing plate
- groove
- cover cap
- 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
Links
- 238000010276 construction Methods 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 description 9
- 230000002950 deficient Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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)
- Valve Housings (AREA)
Abstract
The utility model discloses an electronic expansion valve which comprises a valve seat component, a shell and a motor disposed in the shell. A mounting plate is fixed on the motor. A cover supporting the mounting plate is fixed on the valve seat component. One of the cover and the mounting plate is provided with a limit groove, the other of the two is provided with a limit protrusion matched with the limit groove, so that the relative positions, in the circumferential direction, of the cover and the mounting plate are limited. The electronic expansion valve further comprises a limit part for limiting the axial position of the mounting plate. By the arrangement, the electronic expansion valve has the advantages that the relative positions, in the circumferential direction, of the mounting plate and the cover are limited, and due to the fact that the mounting plate is fixed on the motor, the circumferential position of the motor is limited; due to the fact that the axial position of the mounting plate is limited by the limit part, the axial position of the motor is limited, axial endplay and circumferential rotation of the motor when the motor works are avoided, failure probability of the electronic expansion valve is lowered, and reliability of the electronic expansion valve is increased.
Description
Technical field
The utility model relates to fluid control component technical field, particularly relates to a kind of electric expansion valve.
Background technology
Electric expansion valve is the vitals of composition refrigeration system, is to remove another basic element of character outside evaporimeter, compressor and condenser in four basic elements of character of refrigeration system.The course of work of electric expansion valve is generally: along with energising or the power-off of coil device, needle regulates the aperture of valve port, thereby regulates the flow of cold-producing medium.
Please refer to Fig. 1, Fig. 1 is the structural representation of a kind of electric expansion valve in prior art.
This electric expansion valve comprises valve body 11 and is connected with this valve body 11, for controlling the valve operation mechanism of the fluid flow that flows through valve body 11.
Valve body 11 comprises the connector 11a that first flow section 111 and the second flow section 112 are interconnected; Valve operation mechanism comprises needle assembly 15 and for driving the electric machine assembly of this needle assembly 15.
Electric machine assembly comprises electric machine casing 13 and is arranged at the motor 12 of electric machine casing 13 inside.The output shaft of motor 12 is connected with transmission mechanism 14, drives needle assembly 15 to open or close connector 11a by transmission mechanism 14, so that first flow section 111 and the second flow section 112 are communicated with or disconnect.
Wherein, the bottom of electric machine casing 13 is provided with caulking part, and motor 12 is riveted on electric machine casing 13 bottoms.Flange after riveted joint can limit the axial location of motor 12.
There is following problems in above-mentioned electric expansion valve:
One, only has axial limiting between motor 12 and electric machine casing 13, circumferentially can only rely on the rear axial extruding force of riveted joint spacing, and reliability is low; After long-play, motor 12 is easily loosening, and rotation relative to electric machine casing 13, may cause product failure;
Its two, the gap between motor 12 and electric machine casing 13 is little, makes riveting process complicated and high to riveting tool requirement, has increased processing cost;
In view of this, how improving the structure of electric expansion valve, make the location between motor and electric machine casing reliable, is the current technical issues that need to address of those skilled in the art.
Utility model content
The purpose of this utility model is to provide a kind of electric expansion valve, and the location between motor and the electric machine casing of this electric expansion valve is reliable, and functional reliability is high.
For solving the problems of the technologies described above, the utility model provides a kind of electric expansion valve, comprises valve component, shell and is located at the motor in described shell, and described motor is installed with installing plate, also comprise the cover cap that is fixedly arranged on described valve component, installing plate described in described cap support; In described cover cap and described installing plate, one is provided with limited impression, and another one is provided with the stopper protrusion coordinating with described limited impression, to limit described cover cap and described installing plate at week relative position upwards; Also comprise the limiting section that limits described installing plate axial location.
The utility model has been realized the reliable location of the motor of electric expansion valve by architecture advances.In concrete scheme, valve component is installed with the cover cap of support motor installing plate, cover cap and installing plate are provided with limited impression and the positive stop lug boss of restriction installing plate circumferential position, motor is arranged at after cover cap by installing plate, can be by the circumferential rotation of the engagement limits motor of limited impression and positive stop lug boss; Limiting section can limit the axial location of installing plate, thus the axial location of limiting motor; By said structure, the axial and circumferential of motor location is reliable, can avoid between motor and shell axial float or relatively rotate in the course of work, has reduced the probability of electronic expansion defective valve, improves the functional reliability of electric expansion valve.
Preferably, described cover cap is tubular construction, and its upper end edge is circumferentially with at least one groove; Described installing plate has the protuberance extending radially, described protuberance and described groove fit.
Preferably, described cover cap is tubular construction, and its upper end edge is circumferentially with at least one groove; Described installing plate has the protuberance stretching out vertically, described protuberance and described groove fit.
Preferably, the upper end of described cover cap is provided with the supine stage portion of step, and described groove is located at described stage portion; Described shell is provided with the ventricumbent end difference of ladder, and described end difference overcoat is fixed on described stage portion, and the end face of described groove and described cascaded surface form described limiting section.
Preferably, the upper end of described protuberance is provided with at least one boss, the described cascaded surface of described shell and described boss butt.
Preferably, described end difference and described stage portion are by being welded and fixed.
Preferably, described groove is multiple, and along being circumferentially evenly arranged, the number of described protuberance mates with the number of described groove.
Preferably, described groove is specially four.
Brief description of the drawings
Fig. 1 is the structural representation of a kind of electric expansion valve in prior art;
Fig. 2 provides the structural representation of a kind of detailed description of the invention of electric expansion valve for the utility model;
Fig. 3 is the enlarged diagram at A position in Fig. 2;
Fig. 4 is that the axle of cover cap shown in Fig. 2 measures intention;
Fig. 5 is the front view of cover cap shown in Fig. 4;
Fig. 6 is the top view of Fig. 5;
Fig. 7 is that the axle of motor shown in Fig. 2 measures intention;
Fig. 8 is the generalized section of motor shown in Fig. 7;
Fig. 9 is the upward view of motor shown in Fig. 7;
Figure 10 is the generalized section of shell shown in Fig. 2;
In Fig. 1:
Valve body 11, first flow section 111, the second flow section 112, connector 11a, motor 12, electric machine casing 13, transmission mechanism 14, needle assembly 15;
In Fig. 2-10:
Valve component 20, valve seat 21, cover cap 22, stage portion 221, groove 221a, end face 221b, valve rod assembly 30, transmission mechanism 40, electric machine assembly 50, motor 51, coil 511, rotor 512, shell 52, end difference 521, cascaded surface 521b, installing plate 53, protuberance 531, boss 532.
Detailed description of the invention
Core of the present utility model is to provide a kind of electric expansion valve, and the location between motor and the electric machine casing of this electric expansion valve is reliable, and functional reliability is high.
In order to make those skilled in the art person understand better the utility model scheme, below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Here it should be noted that, the upper and lower noun of locality such as grade relating to is herein that the mutual alignment relation in figure and between parts defines with parts in Fig. 2 to Figure 10, just knowing and convenience for expression technology scheme; Should be appreciated that the use of the described noun of locality does not limit the protection domain of the application's request.
Please refer to Fig. 2, Fig. 2 provides the structural representation of a kind of detailed description of the invention of electric expansion valve for the utility model.
In this embodiment, electric expansion valve comprises valve component 20, valve rod assembly 30, transmission component 40 and electric machine assembly 50.
Valve component 20 comprises valve seat 21, cover cap 22; Cover cap 22 is fixedly arranged on the upper end of valve seat 21; The valve pocket of valve seat 21 is divided into epicoele and cavity of resorption by valve port, and described epicoele and described cavity of resorption are communicated with two adapters respectively.
Valve rod assembly 30 is located at the inner chamber that valve seat 21 and cover cap 22 form, and can move vertically open or close described valve port, thereby make described epicoele and described cavity of resorption in connected state or off-state.
Electric machine assembly 50 is located at the upper end of cover cap 22, comprises motor 51 and housing 52; Wherein, motor 51 is located in housing 52, comprises rotor 512 and the coil 511 (being shown in Fig. 8) that is coated at rotor 512; The output shaft of motor 51 is connected with transmission mechanism 40, and transmission mechanism 40 is connected with valve rod assembly 30.
When work, motor 51 rotates, and drives transmission mechanism 40, thereby drives valve rod assembly 30 mobile unlatching or close port vertically.
In the electric expansion valve course of work, the coil 511 of motor 51 needs location reliable, avoids occurring circumferentially rotating or axial float, causes electronic expansion valve events to lose efficacy.
Motor 51 lower ends in this embodiment are installed with installing plate 53, and above-mentioned cover cap 22 is for supporting described installing plate 53, i.e. support motor 51.
In cover cap 22 and installing plate 53, one is provided with limited impression, and another one is provided with the stopper protrusion coordinating with described limited impression, to limit cover cap 22 and installing plate 53 at week relative position upwards; This electric expansion valve also comprises the limiting section of restriction installing plate 53 axial locations.
As above after arranging, installing plate 53 and cover cap 22 week relative position be upwards defined, because installing plate 53 is fixedly arranged on motor 51, thereby the circumferential position of motor 51 is defined, again, the limited portion of axial location of installing plate 53 limits, thereby the axial location of motor 51 is also defined, circumferential position and the axial location of motor 51 are fixed, avoid in the electric expansion valve course of work, coil 511 axial floats of motor 51 and circumferential rotation, reduced the probability of electronic expansion defective valve, improved the functional reliability of electric expansion valve.
When actual setting, also installing plate 53 can be fixedly arranged on to motor 51 upper ends, the parts respective design coordinating with it.
Please, in the lump in conjunction with Fig. 4-6, Fig. 4 is that the axle of cover cap shown in Fig. 2 measures intention; Fig. 5 is the front view of cover cap shown in Fig. 4; Fig. 6 is the top view of Fig. 5.
In this scheme, cover cap 22 is tubular construction, and in order to hold transmission mechanism 40, cover cap 22 specific designs are up big and down small structure.
The upper end edge of cover cap 22 is circumferentially with at least one groove 221a, is above-mentioned limited impression.
Please, in the lump in conjunction with Fig. 7-9, Fig. 7 is that the axle of motor shown in Fig. 2 measures intention; Fig. 8 is the generalized section of motor shown in Fig. 7; Fig. 9 is the upward view of motor shown in Fig. 7.
The lower end of motor 51 is installed with installing plate 53, and as shown in Figure 9, the main part of installing plate 53 is roughly rounded, is provided with the protuberance 531 extending radially, and this protuberance 531 coordinates with the groove 221a of above-mentioned cover cap 22, and described protuberance 531 is above-mentioned stopper protrusion.
When assembling, the protuberance 531 of installing plate 53 stretches in the groove 221a of cover cap 22, supported by cover cap 22, and because protuberance 531 is spacing with coordinating of groove 221a, installing plate 53 cannot rotate relative to cover cap 22, thereby the motor 51 fixing with installing plate 53 also cannot rotate relative to cover cap 22, can avoid motor 51 in the course of work circumferentially to rotate.
In concrete scheme, multiple groove 221a can be set on cover cap 22, and multiple groove 221a is circumferentially evenly arranged along cover cap 22, certainly, protuberance 531 numbers on installing plate 53 also mate with the number of groove 221a.So, can guarantee the support of cover cap 22 to installing plate 53 and motor 51, further improve the reliability of product.
In this embodiment, in Fig. 6 and Fig. 9, illustrate that groove 221a and protuberance 531 are all set to the structure of four.After assembling, four protuberances 531 respectively with four groove 221a Corresponding matchings, can limit better the circumferential rotation of installing plate 53.
Certainly,, when actual setting, also groove 221a and protuberance 531 can be set to as required to three or five etc.
In said structure, the main part of installing plate 53 is roughly rounded, with motor 51 adaptations, adapts in the groove 221a of cover cap 22 by radially-protruding protuberance 531, limits it and circumferentially rotates.And in the time of actual setting, also can adopt the protuberance of other structures and the groove 221a of cover cap 22 to coordinate spacing, for example, installing plate 53 is provided with the protuberance stretching out vertically, after assembling, this protuberance is placed in the groove 221a of cover cap 22, so, also can reaches the object that restriction installing plate 53 circumferentially rotates.
Above-mentionedly provide the position limiting structure that limiting motor 51 circumferentially rotates, illustrated the limiting section of limiting motor 51 axial floats below.
Please, in the lump in conjunction with Figure 10, Figure 10 is the generalized section of shell shown in Fig. 2.
The housing 52 of electric machine assembly 50 can be fixedly connected with valve component 20.In this embodiment, shell 52 is provided with cascaded surface 521b end difference 521 down.
Incorporated by reference to Fig. 4 and Fig. 5, the upper end of cover cap 22 is provided with the supine stage portion 221 of step, and now, groove 221a can be located in stage portion 221.
End difference 521 overcoats of shell 52 are also fixed on stage portion 221, wherein, and the step surface butt of the bottom face of end difference 521 and stage portion 221.End difference 521 can be fixed by welding manner with stage portion 221, easy to be reliable.Certainly, in reality, also can adopt other fixed forms.
Now, the end face 221b of groove 221a and the cascaded surface 521b of end difference 521 form aforementioned limiting section, prevent the axial float of installing plate 53.This kind of axial limiting mode is not only easy but also reliable, can avoid complicated technique, and processing cost is low.
Specifically can be referring to figs. 2 and 3, wherein, Fig. 3 is the enlarged diagram at A position in Fig. 2.
As can be seen from the figure, the end difference 521 of housing 52 is coated at the stage portion 221 of cover cap 22, the end face 221b of the cascaded surface 521b of its end difference 521 and cover cap 22 upper grooves 221 forms draw-in groove, the protuberance 531 of installing plate 53 is arranged at groove 221 when interior, not only week is upwards subject to the restriction of groove 221 both sides inwalls, and axially, be subject to the interference of the end face 221b of groove 221 and the cascaded surface 521b of housing 52, thereby, when work, not only can avoid circumferential rotation, also can avoid axial float, and then the coil 511 of having avoided motor 51 occurs that dislocation causes electronic expansion defective valve in the course of the work.
In the time of actual setting, axial distance between the end face 221b of cascaded surface 521b and groove 221 is slightly larger than the axial dimension of installing plate 53 protuberances 531, so that assembling, now, can there is certain axial movement value in installing plate 53, for avoiding the generation of this kind of phenomenon, at least one boss 532 also can be set in the upper end of protuberance 531, make cascaded surface 521b and this boss 532 butts of shell 52.With reference to figure 7, in this embodiment, each protuberance 531 is respectively arranged with two boss 532.When application, number and the form of protuberance 531 can be set according to demand, as long as can effectively avoid motor 51 axial floats.
Above electric expansion valve provided by the utility model is described in detail.Applied specific case herein principle of the present utility model and embodiment are set forth, the explanation of above embodiment is just for helping to understand method of the present utility model and core concept thereof.Should be understood that; for those skilled in the art; do not departing under the prerequisite of the utility model principle, can also carry out some improvement and modification to the utility model, these improvement and modification also fall in the protection domain of the utility model claim.
Claims (8)
1. an electric expansion valve, comprises valve component, shell and is located at the motor in described shell; It is characterized in that, described motor is installed with installing plate, also comprises the cover cap that is fixedly arranged on described valve component, installing plate described in described cap support; In described cover cap and described installing plate, one is provided with limited impression, and another one is provided with the stopper protrusion coordinating with described limited impression, to limit described cover cap and described installing plate at week relative position upwards; Also comprise the limiting section that limits described installing plate axial location.
2. electric expansion valve as claimed in claim 1, is characterized in that, described cover cap is tubular construction, and its upper end edge is circumferentially with at least one groove; Described installing plate has the protuberance extending radially, described protuberance and described groove fit.
3. electric expansion valve as claimed in claim 1, is characterized in that, described cover cap is tubular construction, and its upper end edge is circumferentially with at least one groove; Described installing plate has the protuberance stretching out vertically, described protuberance and described groove fit.
4. electric expansion valve as claimed in claim 2 or claim 3, is characterized in that, the upper end of described cover cap is provided with the supine stage portion of step, and described groove is located at described stage portion; Described shell is provided with the ventricumbent end difference of ladder, and described end difference overcoat is fixed on described stage portion, and the end face of described groove and described cascaded surface form described limiting section.
5. electric expansion valve as claimed in claim 4, is characterized in that, the upper end of described protuberance is provided with at least one boss, the described cascaded surface of described shell and described boss butt.
6. electric expansion valve as claimed in claim 4, is characterized in that, described end difference and described stage portion are by being welded and fixed.
7. electric expansion valve as claimed in claim 2 or claim 3, is characterized in that, described groove is multiple, and along being circumferentially evenly arranged, the number of described protuberance mates with the number of described groove.
8. electric expansion valve as claimed in claim 7, is characterized in that, described groove is specially four.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420238068.9U CN203810807U (en) | 2014-05-09 | 2014-05-09 | Electronic expansion valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420238068.9U CN203810807U (en) | 2014-05-09 | 2014-05-09 | Electronic expansion valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203810807U true CN203810807U (en) | 2014-09-03 |
Family
ID=51449547
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420238068.9U Expired - Lifetime CN203810807U (en) | 2014-05-09 | 2014-05-09 | Electronic expansion valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203810807U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106015691A (en) * | 2016-07-25 | 2016-10-12 | 新疆水利水电科学研究院 | Electrically operated valve transmission device based on inner lifting stop valve |
| CN114370511A (en) * | 2022-01-03 | 2022-04-19 | 浙江恒森实业集团有限公司 | Make things convenient for screw rod machine expansion valve that disk seat was changed |
-
2014
- 2014-05-09 CN CN201420238068.9U patent/CN203810807U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106015691A (en) * | 2016-07-25 | 2016-10-12 | 新疆水利水电科学研究院 | Electrically operated valve transmission device based on inner lifting stop valve |
| CN106015691B (en) * | 2016-07-25 | 2019-04-09 | 高建新 | Valve driving device based on interior lifting shut-off valve |
| CN114370511A (en) * | 2022-01-03 | 2022-04-19 | 浙江恒森实业集团有限公司 | Make things convenient for screw rod machine expansion valve that disk seat was changed |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160811 Address after: 312500 Zhejiang city of Shaoxing province Xinchang County Chengguan town of Liquan Patentee after: ZHEJIANG SANHUA CLIMATE AND APPLIANCE CONTROLS GROUP Co.,Ltd. Address before: 312500 Xinchang, Zhejiang province Qixing street under the village of Liquan Patentee before: ZHEJIANG SANHUA Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220822 Address after: 312500 Daming new area, Zhejiang Xinchang Economic Development Zone, Xinchang County, Shaoxing City, Zhejiang Province Patentee after: Zhejiang Sanhua Commercial Refrigeration Co.,Ltd. Address before: Xia Li Quan, Chengguan Town, Xinchang County, Shaoxing City, Zhejiang Province Patentee before: ZHEJIANG SANHUA CLIMATE AND APPLIANCE CONTROLS GROUP Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140903 |