CN213206563U - Electronic expansion valve - Google Patents
Electronic expansion valve Download PDFInfo
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- CN213206563U CN213206563U CN202021496706.9U CN202021496706U CN213206563U CN 213206563 U CN213206563 U CN 213206563U CN 202021496706 U CN202021496706 U CN 202021496706U CN 213206563 U CN213206563 U CN 213206563U
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- valve
- fixing plate
- electronic expansion
- expansion valve
- rotor
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Abstract
The utility model provides an electronic expansion valve, electronic expansion valve includes valve module and valve body, valve module and valve body are connected, valve module includes stator module, case subassembly, the case subassembly includes rotor, sleeve pipe, disk seat, needle, stator module is located the outside of rotor, the rotor is located the sleeve pipe is inboard, the disk seat has the valve port, it is relative that the rotor can drive the needle the valve port motion, case subassembly and fixed plate interference fit, stator module directly can dismantle through the screw and be connected with the fixed plate, can dismantle through dismantling between stator module and the case subassembly and be connected, conveniently change stator module, satisfy the requirement that the customer required whole valves to deliver again.
Description
Technical Field
The utility model relates to a fluid control field, concretely relates to electronic expansion valve.
Background
201811146859.8 patent application provides an electrically operated valve, when the problem appears, stator module is difficult to change, can only change whole valves. When the whole valve bank is replaced, the refrigerant of the system needs to be discharged, and the refrigerant is refilled after replacement, so that the cost is high.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides an electronic expansion valve through can dismantling the connection between stator module and the case subassembly, conveniently changes stator module, satisfies the requirement that the whole valves of customer requirement were delivered again.
The electronic expansion valve comprises a valve component and a valve body, the valve component is connected with the valve body, the valve component comprises a stator component and a valve core component, the valve core component comprises a rotor, a sleeve, a valve seat and a valve needle, the stator component is located on the outer side of the rotor, the rotor is located on the inner side of the sleeve, the valve seat is provided with a valve port, the rotor can drive the valve needle to move relative to the valve port, the valve core component is in interference fit with a fixing plate, and the stator component is directly detachably connected with the fixing plate through a screw.
The valve core assembly and the fixed plate are in interference fit through a connecting piece.
The fixing plate is divided into a flat plate shape, a press fitting hole is formed in the middle of the fixing plate, the press fitting hole and the connecting piece are fixed in an interference fit mode, and a through hole is formed in the outer ring of the fixing plate; and the lower side of the stator assembly is provided with an integrally injection-molded threaded hole which is connected with the fixing plate through a screw.
The fixing plate is divided into a flat plate shape, a press fitting hole is formed in the middle of the fixing plate, the press fitting hole and the connecting piece are fixed in an interference fit mode, and a threaded hole is formed in the outer ring of the fixing plate; the stator module side below has the through-hole of integrative moulding plastics, through the fixed plate of screw connection.
The connecting piece has a step, by means of which the fixing plate defines an axial position.
The outer diameter of the interference fit position of the connecting piece and the fixing plate is larger than the outer diameter of the sleeve.
The valve seat is provided with a straight groove which is matched with the stop lever for limiting, and the straight groove determines the relative position through the straight edge of the fixing plate.
The central line of the straight groove is parallel to one straight edge of the fixing plate.
Drawings
Fig. 1 is a sectional view of an electronic expansion valve.
Fig. 2 is a partially enlarged view.
Fig. 3 is a front view of the valve assembly.
Fig. 4 is an exploded perspective view of the valve assembly.
Detailed Description
The invention will be further described with reference to the drawings and the detailed description, which are clearly described in the background documents cited and are not overrepresented here.
Referring to fig. 1, 2, 3 and 4, in the present embodiment, the electronic expansion valve includes a valve body 1 and a valve assembly 2, and the valve assembly 2 and the valve body 1 are fixedly connected or detachably connected.
The valve assembly 2 comprises a valve core assembly 10 and a stator assembly 20; in this embodiment, the valve core assembly 2 and the valve body 1 are relatively limited, and the valve core assembly 10 is relatively limited with respect to the stator assembly 20; i.e., the core assembly 10 is removably coupled to the stator assembly 20 such that the valve assembly is formed as a single unit.
The stator assembly 20 comprises a coil 21, a framework 22, a fixing piece 23, a connecting terminal 24 and a stator shell 27, wherein the framework 22 provides support for winding the coil 21; referring to fig. 2, in this embodiment, the stator assembly 20 further includes an injection molded body, in this embodiment, the injection molded body uses components including the coil 21 and the frame 22 as an injection molding insert, and the injection molded body forms the insulating layer 25 of the stator assembly 20 on the periphery of the coil 21 and the frame 22, so as to prevent the stator assembly 20 from being corroded by the working medium or air. The control system is connected through a terminal 24 and controls the coil 21, thereby controlling the electronic expansion valve to work.
The valve core assembly 10 comprises a screw 11, a connecting piece 12, a sleeve 13, a rotor 14, a nut 15, a connecting piece 16, a valve needle 17 and a valve seat 18, wherein the rotor 14 can drive the valve needle 17 to move, the valve needle 17 can move relative to the valve seat 18, the valve seat 18 is provided with a valve port 181, the valve port 181 is communicated with channels on two sides of the valve port 181, and throttling can be formed at the valve port 181. The sleeve 13 covers the periphery of the magnetic rotor 14, the sleeve 13 is welded and fixed with the connecting piece 16, and the valve seat 18 is fixedly connected with the connecting piece 16. The connecting piece is used for mainly solving the connection problem among different materials, the connecting piece is easy to weld and weld with the sleeve 13, the valve seat is easy to machine and can be in interference fit with the connecting piece. The valve core assembly 10 and the valve body 1 are sealed by sealing rings 3 and 4.
When the valve component 2 is assembled, firstly, the valve core component 10 and the stator component 20 are assembled, then the valve core component 10 is subjected to performance detection and helium leakage detection, and then the valve core component 10 is pressed on the fixing plate 5 and fixedly connected together; the stator assembly 20 is then mounted to the valve core assembly 10 and the stator assembly 20 is fixedly connected to the fixed plate 5 by the screws 6 to form the valve assembly 2. The fixed plate 5 is divided into a flat plate shape; a press fitting hole 52 is formed in the middle of the flat plate, and the press fitting hole 52 is fixed with the connecting piece 16 in an interference fit manner; the outer ring of the fixed plate 5 is provided with a through hole 51; the lower side of the stator component is provided with an integrally injection-molded threaded hole 26 which is connected with the fixing plate 5 through a screw 6. Of course, the fixing plate through hole 51 and the stator assembly screw hole 26 may be interchanged, and the fixing plate may be connected by screws, which are not illustrated here. The connecting piece 16 has a step 161, by means of which step 161 the axial position of the fixing plate 5 is defined. The outer diameter 162 of the interference fit part of the connecting piece 16 and the fixing plate 5 is larger than the outer diameter 131 of the sleeve.
The valve body 1 is further provided with at least two stop rod holes (not shown), the stop rods 8 are arranged in the stop rod holes, and the valve seat 18 is provided with a matching part which is matched and limited with the stop rods, wherein the matching part is a straight groove 19 or an annular groove. The valve body 1 is formed with at least one breach, at least a part of pin passes through the breach stretches into in the chamber, stretch into in the chamber the pin portion with cooperation portion butt, the pin restriction the displacement of disk seat in the axis direction. All of the above are set forth in the background documents. When the valve component 2 is assembled, if no mark exists, whether the straight groove 19 is aligned with the blocking hole cannot be determined, therefore, the fixing plate 5 is provided with a straight edge, a mold is used for ensuring the relative positions of the straight edge and the straight groove 19, and the specific position of the straight groove 19 is determined by the straight edge of the fixing plate at the final assembly, for example, the central line of the straight groove is parallel to one straight edge of the fixing plate.
It should be noted that: the above embodiments are only used for illustrating the present invention and not for limiting the technical solutions described in the present invention, and the expressions such as upper, lower, inner, outer, etc. appearing herein are only for the purpose of more clearly illustrating the technical solutions of the present invention, but not for limiting the technical solutions of the present invention. Although the present invention has been described in detail with reference to the above embodiments, it will be understood by those skilled in the art that the present invention may be modified and replaced by other embodiments without departing from the spirit and scope of the present invention.
Claims (8)
1. The electronic expansion valve comprises a valve component and a valve body, the valve component is connected with the valve body, the valve component comprises a stator component and a valve core component, the valve core component comprises a rotor, a sleeve, a valve seat and a valve needle, the stator component is positioned on the outer side of the rotor, the rotor is positioned on the inner side of the sleeve, the valve seat is provided with a valve port, and the rotor can drive the valve needle to move relative to the valve port, and the electronic expansion valve is characterized in that: the valve core assembly is in interference fit with the fixed plate, and the stator assembly is directly detachably connected with the fixed plate through a screw.
2. The electronic expansion valve of claim 1, wherein: the valve core assembly and the fixed plate are in interference fit through a connecting piece.
3. The electronic expansion valve of claim 2, wherein: the fixing plate is divided into a flat plate shape, a press fitting hole is formed in the middle of the fixing plate, the press fitting hole and the connecting piece are fixed in an interference fit mode, and a through hole is formed in the outer ring of the fixing plate; and the lower side of the stator assembly is provided with an integrally injection-molded threaded hole which is connected with the fixing plate through a screw.
4. The electronic expansion valve of claim 2, wherein: the fixing plate is divided into a flat plate shape, a press fitting hole is formed in the middle of the fixing plate, the press fitting hole and the connecting piece are fixed in an interference fit mode, and a threaded hole is formed in the outer ring of the fixing plate; the stator module side below has the through-hole of integrative moulding plastics, through the fixed plate of screw connection.
5. The electronic expansion valve of claim 2, wherein: the connecting piece has a step, by means of which the fixing plate defines an axial position.
6. The electronic expansion valve of claim 2, wherein: the outer diameter of the interference fit position of the connecting piece and the fixing plate is larger than the outer diameter of the sleeve.
7. The electronic expansion valve of claim 1, wherein: the valve seat is provided with a straight groove which is matched with the stop lever for limiting, and the straight groove determines the relative position through the straight edge of the fixing plate.
8. The electronic expansion valve of claim 7, wherein: the central line of the straight groove is parallel to one straight edge of the fixing plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021496706.9U CN213206563U (en) | 2020-07-24 | 2020-07-24 | Electronic expansion valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021496706.9U CN213206563U (en) | 2020-07-24 | 2020-07-24 | Electronic expansion valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213206563U true CN213206563U (en) | 2021-05-14 |
Family
ID=75835961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021496706.9U Active CN213206563U (en) | 2020-07-24 | 2020-07-24 | Electronic expansion valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213206563U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024021870A1 (en) * | 2022-07-27 | 2024-02-01 | 广东威灵电机制造有限公司 | Electronic expansion valve assembly, electronic expansion valve and refrigeration apparatus |
-
2020
- 2020-07-24 CN CN202021496706.9U patent/CN213206563U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024021870A1 (en) * | 2022-07-27 | 2024-02-01 | 广东威灵电机制造有限公司 | Electronic expansion valve assembly, electronic expansion valve and refrigeration apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230522 Address after: Floor 11-230, Building 15, International Car City, No. 309 Green Valley Avenue, Nanmingshan Street, Liandu District, Lishui City, Zhejiang Province, 323010 Patentee after: Zhejiang Zhihui Automotive Thermal Management Technology Co.,Ltd. Address before: 323700 No.2 Guangyuan Road, regression project, Longquan City, Lishui City, Zhejiang Province Patentee before: Longquan Huifeng import and Export Co.,Ltd. |