CN220669836U

CN220669836U - Electronic expansion valve and refrigeration equipment

Info

Publication number: CN220669836U
Application number: CN202322369951.3U
Authority: CN
Inventors: 王俊飞; 张建华; 刘文金; 梁高帅; 刘振超; 唐文博
Original assignee: Guangdong Meizhi Compressor Co Ltd
Current assignee: Guangdong Meizhi Compressor Co Ltd
Priority date: 2023-08-31
Filing date: 2023-08-31
Publication date: 2024-03-26
Anticipated expiration: 2033-08-31

Abstract

The utility model discloses an electronic expansion valve and a refrigeration device, wherein the electronic expansion valve comprises: a valve body and valve port assembly; the valve body comprises a shell and a valve needle assembly, wherein the valve needle assembly is movably arranged on the shell; the valve port assembly comprises a connecting seat and a valve port seat, the connecting seat is in sealing connection with the shell, the connecting seat is in riveting connection with the valve port seat, a needle inlet and a valve port which are oppositely arranged are arranged on the valve port seat, and the valve needle assembly can extend into the needle inlet and is inserted into the valve port. The technical scheme of the utility model can reduce the production cost of the electronic expansion valve.

Description

Electronic expansion valve and refrigeration equipment

Technical Field

The utility model relates to the technical field of refrigeration equipment, in particular to an electronic expansion valve and refrigeration equipment.

Background

In a refrigeration system, an electronic expansion valve is used to regulate and control the flow of refrigerant into an evaporator. With the progress of technology, electronic expansion valves are increasingly used in automotive air conditioning systems, heat pump air conditioning systems, and battery cooling systems. In the related art, after a valve port component on a common electronic expansion valve is pressed and assembled by interference fit of a valve port seat and a connecting seat, laser welding or argon arc welding is performed at a butt joint surface, no matter which process is adopted, the production by adopting a heating source cannot be avoided, and the electronic expansion valve has the advantages of more operation procedures, long process flow, high energy consumption and high production cost.

Disclosure of Invention

The utility model mainly aims to provide an electronic expansion valve, which aims to reduce the production cost of the electronic expansion valve.

In order to achieve the above object, the present utility model provides an electronic expansion valve, comprising:

a valve body comprising a housing and a valve needle assembly movably mounted to the housing; and

the valve port assembly comprises a connecting seat and a valve port seat, the connecting seat is in sealing connection with the shell, the connecting seat is in riveting connection with the valve port seat, a needle inlet and a valve port which are oppositely arranged are arranged on the valve port seat, and the valve needle assembly can extend into the needle inlet and is inserted into the valve port.

Optionally, the connecting seat is equipped with the connecting hole of needle entry intercommunication, be equipped with the butt portion in the connecting hole, the valve port seat be equipped with extension and with the riveting portion that extension is connected, extension peg graft in the connecting hole, riveting portion is used for the butt portion.

Optionally, the abutting portion is a first boss protruding from an inner wall of the connecting hole, the riveting portion is bent relative to the extending portion, and one end of the riveting portion abuts against the first boss, so that the connecting seat is fixedly connected with the valve port seat.

Optionally, the first boss extends along the periphery of connecting hole and is cyclic annular, be formed with first via hole in the first boss, the last mouth edge department of first via hole is formed with the chamfer, the cambered surface of chamfer orientation the riveting portion with the junction of extension.

Optionally, the bending angle of the riveting part relative to the extension part is 90 degrees.

Optionally, the butt portion is protruding the locating for the second boss of connecting hole inner wall, the second boss is followed the periphery of connecting hole extends, form the second via hole in the second boss, the one end of second boss is formed with the inclined plane, the inclined plane is used for supplying the butt after the riveting portion is buckled, the one end of inclined plane extends to the inner wall of connecting hole, the other end extends to the lateral wall of second boss.

Optionally, the bending angle of the riveting part relative to the extension part is greater than 90 degrees and less than or equal to 120 degrees.

Optionally, the inner wall of the connecting hole is further concavely provided with a containing groove, the containing groove is close to the second boss, one end of the inclined surface extends to the containing groove, the other end of the inclined surface extends to the inner wall of the hole of the second via hole, and the containing groove is used for placing the riveting part of the connecting hole.

Alternatively, the cross-sectional shape of the receiving groove is circular or rectangular.

The utility model also provides refrigeration equipment comprising the electronic expansion valve.

According to the technical scheme, one end of the connecting seat far away from the shell is riveted with the valve port seat, so that the valve port seat can be stably assembled on the connecting seat, the connecting seat is in sealing connection with the shell, the valve needle assembly in the shell can sequentially penetrate through the connecting seat and the needle inlet to be spliced with the valve port, the valve needle assembly is controlled to be inserted into or separated from the valve port to realize the flow regulation function, and due to the fact that riveting belongs to cold working, reliable connection can be realized through one-time press fitting riveting, energy consumption and resource consumption are less, the riveting connection strength is superior to that of laser welding, a certain production cost is reduced on the premise that the connection strength of the valve port seat and the connecting seat can be ensured, and the production and processing mode is energy-saving and environment-friendly and beneficial to environmental protection.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a valve port assembly according to an embodiment of the electronic expansion valve of the present utility model;

FIG. 2 is a schematic view of the structure of the connecting seat and the valve seat of FIG. 1 after being riveted;

FIG. 3 is a schematic view of a valve port assembly of another embodiment of an electronic expansion valve of the present utility model;

FIG. 4 is a schematic view of the structure of the connecting seat and the valve seat of FIG. 3 after being riveted;

FIG. 5 is a schematic view of the structure of the connection seat of FIG. 3 after the connection seat is provided with a receiving groove and is riveted with the valve port seat.

Reference numerals illustrate:

reference numerals	Name of the name	Reference numerals	Name of the name
				10	Valve port assembly	11	Connecting seat
111	Connecting hole	112	First boss
				113	Chamfering angle	114	Second boss
115	Accommodating groove	12	Valve port seat
				121	Needle inlet	122	Valve port
123	Extension part	124	Rivet joint

The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.

In the present utility model, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In addition, if there is a description of "first", "second", etc. in the embodiments of the present utility model, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" as it appears throughout includes three parallel schemes, for example "A and/or B", including the A scheme, or the B scheme, or the scheme where A and B are satisfied simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

The utility model provides an electronic expansion valve.

In one embodiment of the present utility model, as shown in FIGS. 1-5, the electronic expansion valve includes a valve body and a valve port assembly 10; the valve body comprises a shell and a valve needle assembly, wherein the valve needle assembly is movably arranged on the shell; the valve port assembly 10 comprises a connecting seat 11 and a valve port seat 12, the connecting seat 11 is in sealing connection with the shell, the connecting seat 11 is in riveting connection with the valve port seat 12, a needle inlet 121 and a valve port 122 which are oppositely arranged are arranged on the valve port seat 12, and the valve needle assembly can extend from the needle inlet 121 and is inserted into the valve port 122.

In the technical scheme of the utility model, one end of the connecting seat 11 far away from the shell is riveted with the valve port seat 12, so that the valve port seat 12 can be stably assembled on the connecting seat 11, the connecting seat 11 is in sealing connection with the shell, a valve needle assembly in the shell can sequentially pass through the connecting seat 11 and the needle inlet 121 to be inserted into the valve port 122, and the valve needle assembly is controlled to be inserted into the valve port 122 or separated from the valve port 122 to realize the function of flow regulation.

In this embodiment, the electronic expansion valve further includes a stator, a rotor component and a nut component, where the valve needle assembly is rotatably connected with the nut component, and by applying a regular electric pulse to the stator, the rotor component is excited to rotate, so as to control the valve needle assembly to rotate relative to the nut component, thereby controlling the valve needle assembly to perform linear motion along the axial direction, and realizing the approach and separation of the valve needle assembly and the valve port 122.

In an embodiment, the connecting seat 11 is provided with a connecting hole 111 communicated with the needle inlet 121, an abutting portion is arranged in the connecting hole 111, the valve seat 12 is provided with an extending portion 123 and a riveting portion 124 connected with the extending portion 123, the extending portion 123 is inserted into the connecting hole 111, and the riveting portion 124 is used for abutting against the abutting portion.

Specifically, the abutting portion is provided in the connection hole 111, the extension portion 123 and the caulking portion 124 of the valve port seat 12 extend into the connection hole 111, and the caulking portion 124 is pressed against the abutting portion by the press-fitting tool extending from above the connection hole 111, so that the caulking portion 124 and the abutting portion are fixed, the connection operation of the valve port seat 12 and the connection seat 11 is simple, and the connection efficiency is high. In other embodiments, the valve port seat 12 is provided with a fixing flange, one end of the connecting seat 11 facing the valve port seat 12 is provided with a riveting hole, the fixing flange is provided with a fixing hole for a rivet to pass through, and the rivet is riveted to the riveting hole after passing through the fixing hole, so that the fixing flange is fixedly connected with the end of the connecting seat 11.

In an embodiment, the abutting portion is a first boss 112 protruding from an inner wall of the connecting hole 111, the riveting portion 124 is bent relative to the extending portion 123, and one end of the riveting portion 124 abuts against the first boss 112, so that the connecting seat 11 is fixedly connected with the valve seat 12.

Specifically, the position of the riveting portion 124 corresponding to the first boss 112 extends into the connection hole 111, the riveting portion 124 is bent to the upper end of the first boss 112 relative to the extension portion 123 through press fitting operation, and then the riveting portion 124 is pressed against the first boss 112, so that the valve port seat 12 is fixedly connected with the first boss 112, and thus the riveting connection between the valve port seat 12 and the connection seat 11 is realized.

In an embodiment, the first boss 112 extends along the periphery of the connecting hole 111 to form a ring shape, a first via hole is formed in the first boss 112, a rounded corner 113 is formed at the upper edge of the first via hole, and the cambered surface of the rounded corner 113 faces the connection between the riveting part 124 and the extension part 123.

Specifically, the extension portion 123 and the riveting portion 124 are convex rings protruding from the upper end of the valve port seat 12, and the first boss 112 extends annularly along the periphery of the connecting hole 111, so that when the extension portion 123 is bent outwards and abuts against the first boss 112, a larger abutting area is provided, the abutting is more stable, a rounded corner 113 is formed at the upper edge of the first via hole, and the upper edge of the first via hole does not directly abut against the bending part of the riveting portion 124 and the extension portion 123 during the press-fitting process, so that the rigid contact is prevented, and the riveting portion 124 can be bent more easily relative to the extension portion 123, and the connection stability between the valve port seat 12 and the connecting seat 11 can be increased. In other embodiments, a plurality of first bosses 112 are disposed on the inner peripheral wall of the connecting hole 111 at intervals, the extension portion 123 is a convex ring protruding from the upper end of the valve seat 12, a plurality of riveting portions 124 are disposed on the extension portion 123 corresponding to the positions of the plurality of first bosses 112, and one of the riveting portions 124 abuts against one of the first bosses 112.

In one embodiment, the bending angle of the riveting portion 124 relative to the extension portion 123 is 90 degrees.

Specifically, the angle between the riveting portion 124 and the extending portion 123 is a right angle, the upper end surface of the first boss 112 is a plane, and the riveting portion 124 is used for abutting against the upper end surface of the first boss 112, so that the riveting portion 124 can be completely abutted against the first boss 112, and in this way, during the press-fitting process, the riveting portion 124 and the extending portion 123 form a certain angle, so that the first boss 112 limits the riveting portion 124, and the valve port seat 12 is prevented from being separated from the connecting hole 111.

In an embodiment, the abutting portion is a second boss 114 protruding from an inner wall of the connecting hole 111, the second boss 114 extends along a periphery of the connecting hole 111, a second via hole is formed in the second boss 114, an inclined surface is formed at one end of the second boss 114, the inclined surface is used for being abutted after the riveting portion 124 is bent, one end of the inclined surface extends to the inner wall of the connecting hole 111, and the other end extends to a side wall of the second boss 114.

Specifically, the extension portion 123 and the riveting portion 124 are convex rings protruding from the upper end of the valve seat 12, the second boss 114 also extends along the periphery of the connecting hole 111 to form a ring shape, the riveting portion 124 is bent to the upper end of the second boss 114 relative to the extension portion 123 through press fitting operation, and then the riveting portion 124 is pressed on the inclined surface of the second boss 114, so that the valve seat 12 and the second boss 114 are fixedly connected, and in this way, the riveting portion 124 can realize the riveting connection between the valve seat 12 and the connecting seat 11 without bending too much angle relative to the extension portion 123, and the joint of the riveting portion 124 and the extension portion 123 is prevented from generating cracks due to excessive bending.

In an embodiment, the bending angle of the riveting portion 124 relative to the extension portion 123 is greater than 90 degrees and less than or equal to 120 degrees.

Specifically, the angle between the caulking portion 124 and the extension portion 123 is: 90 degrees, 100 degrees, 110 degrees and 120 degrees, in this embodiment, the angle between the rivet 124 and the extension 123 is 120 degrees; on the second boss 114, for the embodiment that the upper end of the first boss 112 is planar, the length of the inclined plane can be designed to be longer, so that the length of the inclined plane can be set to be longer, and the length of the riveting portion 124 can be designed to be longer, so that the contact area between the riveting portion 124 and the inclined plane is larger, the stability of the riveting portion 124 pressed on the inclined plane is higher, and the connection stability of the valve port seat 12 and the connection seat 11 is improved.

In an embodiment, the inner wall of the connecting hole 111 is further concavely provided with a receiving groove 115, the receiving groove 115 is disposed near the second boss 114, one end of the inclined surface extends to the receiving groove 115, the other end extends to the inner wall of the second via hole, and the receiving groove 115 is used for placing part of the riveting portion 124.

Specifically, the accommodating groove 115 extends along the circumferential direction of the connecting hole 111, and when the connecting hole 111 is processed, the accommodating groove 115 is formed above the second boss 114 by forming a tool withdrawal groove, and the upper end of the inclined surface extends to the accommodating groove 115, so that when the riveting portion 124 is pressed on the inclined surface, a part of the riveting portion 124 can extend into the accommodating groove 115, and the size of the accommodating groove 115 is set according to the length of the riveting portion 124, so that the riveting portion 124 can be ensured to cover the inclined surface of the second boss 114 as completely as possible, and the connection stability of the valve port seat 12 and the connecting seat 11 is increased. In other embodiments, the accommodating groove 115 is provided with a plurality of abutting portions corresponding to the plurality of abutting portions, and a rear portion of one abutting portion abutting against the second boss 114 extends into one accommodating groove 115.

In one embodiment, the cross-sectional shape of the receiving groove 115 is circular or rectangular.

Specifically, the accommodating groove 115 is a rectangular annular groove or a spherical annular groove, and is configured according to the shape of the end of the rivet portion 124 away from the extension portion 123, in this embodiment, the accommodating groove 115 is a spherical annular groove, and when the diameters of the diagonal line of the rectangular annular groove and the spherical annular groove are the same, the spherical cross-sectional area is larger than the rectangular cross-sectional area, so that more abutting portions can be accommodated, and the accommodating groove 115 has better adaptability to the rivet portions 124 with different lengths. In other embodiments, the cross-sectional shape of the receiving groove 115 is triangular.

The utility model also provides a refrigeration device, which comprises an electronic expansion valve, and the specific structure of the electronic expansion valve refers to the embodiment, and because the refrigeration device adopts all the technical schemes of all the embodiments, the refrigeration device at least has all the beneficial effects brought by the technical schemes of the embodiments, and the description is omitted herein. The electronic expansion valve is used for controlling the flow of the refrigerant in the refrigerant pipe, so that the refrigerating effect on the vehicle is controlled. The utility model provides an electronic expansion valve.

The foregoing description is only of the optional embodiments of the present utility model, and is not intended to limit the scope of the utility model, and all the equivalent structural changes made by the description of the present utility model and the accompanying drawings or the direct/indirect application in other related technical fields are included in the scope of the utility model.

Claims

1. An electronic expansion valve, comprising:

2. The electronic expansion valve according to claim 1, wherein the connection seat is provided with a connection hole communicated with the needle inlet, an abutting portion is arranged in the connection hole, the valve port seat is provided with an extension portion and a riveting portion connected with the extension portion, the extension portion is inserted into the connection hole, and the riveting portion is used for abutting against the abutting portion.

3. The electronic expansion valve according to claim 2, wherein the abutting portion is a first boss protruding from an inner wall of the connecting hole, the riveting portion is bent with respect to the extending portion, and one end of the riveting portion abuts against the first boss, so that the connecting seat is fixedly connected with the valve port seat.

4. The electronic expansion valve of claim 3, wherein the first boss extends annularly along the periphery of the connecting hole, a first via hole is formed in the first boss, a rounded corner is formed at the upper edge of the first via hole, and the cambered surface of the rounded corner faces the junction of the riveted part and the extension part.

5. The electronic expansion valve of claim 3, wherein the bend angle of the rivet portion relative to the extension portion is 90 degrees.

6. The electronic expansion valve according to claim 2, wherein the abutting portion is a second boss protruding from an inner wall of the connecting hole, the second boss extends along a periphery of the connecting hole, a second through hole is formed in the second boss, an inclined surface is formed at one end of the second boss, the inclined surface is used for being abutted after bending of the riveting portion, one end of the inclined surface extends to an inner wall of the connecting hole, and the other end extends to a side wall of the second boss.

7. The electronic expansion valve of claim 6, wherein the bend angle of the rivet portion relative to the extension portion is greater than 90 degrees and less than or equal to 120 degrees.

8. The electronic expansion valve of claim 6, wherein the inner wall of the connecting hole is further concavely provided with a receiving groove, the receiving groove is disposed near the second boss, one end of the inclined surface extends to the receiving groove, the other end extends to the inner wall of the second through hole, and the receiving groove is used for placing part of the riveting portion.

9. The electronic expansion valve of claim 8, wherein the receiving groove has a circular or rectangular cross-sectional shape.

10. A refrigeration device comprising an electronic expansion valve according to any one of claims 1 to 9.