WO2023185277A1

WO2023185277A1 - Solenoid valve

Info

Publication number: WO2023185277A1
Application number: PCT/CN2023/075732
Authority: WO
Inventors: 江超; 张积友; 徐冠军; 陈勇好
Original assignee: 浙江盾安人工环境股份有限公司
Priority date: 2022-03-28
Filing date: 2023-02-13
Publication date: 2023-10-05
Also published as: CN217301823U

Abstract

The present application provides a solenoid valve, comprising: a valve body assembly; a sleeve, which is connected to the valve body assembly; a coil assembly, at least one portion of which is sleeved on the sleeve; a sealing element, which is sleeved on the sleeve to block a gap between the coil assembly and the sleeve, or is sleeved on the valve body assembly to block a gap between the coil assembly and the valve body assembly; and a support portion, one end of which abuts against the sealing element, and the other end of which abuts against the valve body assembly. By using the solution, one end of the support portion abuts against the sealing element, the other end of the support portion abuts against the valve body assembly, and the sealing element is sleeved on the sleeve, such that the gap between the coil assembly and the sleeve or the gap between the coil assembly and the valve body assembly can be blocked by the sealing element, the coil assembly is prevented from water damage in the working process of the solenoid valve, and the problem of the coil assembly being corroded is avoided, thereby improving the working performance of the coil assembly, prolonging the service life of the coil assembly, and thus improving the sealing effect of the solenoid valve.

Description

The electromagnetic valve

This application requests the priority of the patent application submitted to the State Intellectual Property Office of China on March 28, 2022, with the application number 202220700780.0 and the invention name "Solenoid Valve".

Technical field

The present application relates to the technical field of solenoid valves, specifically, to a solenoid valve.

Background technique

At present, the solenoid valve consists of two parts: a coil component and a valve body. The valve body is equivalent to the rotor part, and the coil component is equivalent to the stator part. During the working process, by applying a pulse drive signal to the coil component, regular magnetic field movement is generated on the pole claws of the magnetic conductor in the coil component, which drives the rotor inside the valve body to rotate to adjust the opening of the valve body, thereby achieving Control of the flow of working medium in the system. In the prior art, after the assembly of the coil component and the valve body is completed, there will be a gap between the coil component and the valve body. When the solenoid valve is in operation, water stains will enter the gap, thus affecting the performance and service life of the coil component.

Application content

This application provides a solenoid valve to solve the problem of poor sealing effect of the solenoid valve in the prior art.

In order to solve the above problems, this application provides a solenoid valve, which includes: a valve body assembly; a sleeve connected to the valve body assembly; a coil assembly at least partially sleeved on the sleeve; and a sealing member sleeved on the sleeve. On the casing to block the gap between the coil assembly and the casing, or the sealing member is set on the valve body assembly to block the gap between the coil assembly and the valve body assembly; the support part, one end of the support part and the seal The other end of the support part is in contact with the valve body assembly.

Further, the support part has a cylindrical structure, the support part is sleeved on the sleeve, the support part has an annular groove at one end facing the coil assembly, and a part of the sealing member is located in the annular groove.

Further, the support part includes a first support ring and a second support ring connected to each other. The aperture of the first support ring is larger than the aperture of the second support ring. The first support ring abuts the coil assembly, and the inner wall of the first support ring and The area between one end of the second support ring forms an annular groove, one end of the second support ring is in contact with the sealing member, and the other end of the second support ring is in contact with the valve body assembly.

Further, the coil assembly includes a coil structure and an inner injection molding shell. The inner injection molding shell is located in the coil structure and sleeved on the casing. The first support ring and the inner injection molding shell are in contact, and the inner injection molding shell and the second support ring are clamped and sealed. pieces.

Further, the coil assembly includes a coil structure, an outer injection molded shell and a limiting block. The outer injection molded shell wraps the coil structure, the limiting block is arranged on the outer injection molded shell, the first support ring has a gap, and the limiting block is located in the gap to limit The circumferential position of the support.

Further, there are a plurality of limiting blocks and a plurality of notches, and the plurality of limiting blocks and the plurality of notches are arranged in one-to-one correspondence.

Further, the limiting block and the outer injection molded shell are an integral structure formed by injection molding.

Further, the axial size of the sealing member is larger than the axial size of the first support ring, and/or the aperture of the sealing member is smaller than the outer diameter of the sleeve.

Further, the solenoid valve also includes a fixed frame, the fixed frame includes a fixed ring and a vertical plate connected to each other, the fixed ring is connected to the coil assembly, the vertical plate is connected to the valve body assembly, and the support part passes through the fixed ring.

Further, the valve body assembly includes a valve seat and a connecting sleeve, one end of the connecting sleeve is connected to the valve seat, the other end of the connecting sleeve is connected to the casing, the support part is in contact with the valve seat; the sealing member is sleeved on the valve body assembly In this case, a part of the coil assembly is placed on the connecting sleeve, and the sealing member is placed on the connecting sleeve to block the gap between the coil assembly and the connecting sleeve.

Applying the technical solution of the present application, a solenoid valve is provided, including: a valve body assembly; a sleeve connected to the valve body assembly; a coil assembly at least partially sleeved on the sleeve; and a sealing member sleeved on the sleeve. On the casing to block the gap between the coil assembly and the casing, or the sealing member is set on the valve body assembly to block the gap between the coil assembly and the valve body assembly; the support part, one end of the support part and the seal The other end of the support part is in contact with the valve body assembly. Using this solution, one end of the support part is in contact with the sealing member, the other end of the support part is in contact with the valve body assembly, and the sealing member is set on the casing or the valve body assembly, so that the coil can be blocked by the sealing member. The gap between the component and the casing or blocking the gap between the coil component and the valve body component prevents water stains from entering the coil component during the operation of the solenoid valve, avoids the problem of corrosion of the coil component, and thus improves the efficiency of the coil. The working performance and service life of the components are improved, thereby improving the sealing effect of the solenoid valve.

Description of drawings

The description and drawings that constitute a part of this application are used to provide a further understanding of this application. The illustrative embodiments and their descriptions of this application are used to explain this application and do not constitute an improper limitation of this application. In the attached picture:

Figure 1 shows a cross-sectional view of a solenoid valve provided by an embodiment of the present application;

Figure 2 shows a bottom view of the coil assembly of Figure 1;

Figure 3 shows a top view of the solenoid valve in Figure 1;

Figure 4 shows a schematic structural diagram of the seal in Figure 1;

Figure 5 shows a top view of the support part in Figure 1;

FIG. 6 shows a cross-sectional view of the support part in FIG. 5 .

Among them, the above-mentioned drawings include the following reference signs:

10. Valve body assembly; 11. Valve seat; 12. Connecting sleeve;

20. Casing;

30. Coil assembly; 31. Coil structure; 32. Outer injection molding shell; 33. Inner injection molding shell; 34. Limiting block;

40. Seals;

50. Support part; 51. Annular groove; 52. First support ring; 521. Notch; 53. Second support ring;

60. Fixed frame.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the application or its application or uses. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of this application.

As shown in Figures 1 to 6, the embodiment of the present application provides a solenoid valve, including: a valve body assembly 10; a sleeve 20 connected to the valve body assembly 10; and a coil assembly 30, at least partially sleeved On the sleeve 20; the seal 40, the seal 40 is sleeved on the sleeve 20 to block the gap between the coil assembly 30 and the sleeve 20, or the seal 40 is sleeved on the valve body assembly 10 to block the gap. The gap between the coil assembly 30 and the valve body assembly 10; the support portion 50, one end of the support portion 50 is in contact with the seal 40, and the other end of the support portion 50 is in contact with the valve body assembly 10.

Using this solution, one end of the support part 50 is in contact with the seal 40, the other end of the support part 50 is in contact with the valve body assembly 10, and the seal 40 is sleeved on the sleeve 20 or the valve body assembly 10, so that The seal 40 can block the gap between the coil assembly 30 and the sleeve 20 or the gap between the coil assembly 30 and the valve body assembly 10, preventing water stains from entering the coil assembly 30 during the operation of the solenoid valve. The problem of corrosion of the coil assembly 30 is avoided, thereby improving the working performance and service life of the coil assembly 30 and thereby improving the sealing effect of the solenoid valve.

It should be noted that the solenoid valve in this application refers to a valve device controlled by electromagnetism, that is, a valve device that controls the direct or indirect movement of the valve needle structure through the magnetic field or magnetic force generated by the coil assembly 30 . The solenoid valve can be a valve device that only realizes opening and closing of the valve, or a valve device that realizes flow regulation and throttling, such as an electronic expansion valve, or a valve device with other functions. In this embodiment, the electronic expansion valve is mainly used as an example for explanation.

The support part 50 has a cylindrical structure and is sleeved on the sleeve 20 . One end of the support part 50 facing the coil assembly 30 has an annular groove 51 , and a part of the seal 40 is located in the annular groove 51 . By arranging the annular groove 51 and arranging a part of the seal 40 in the annular groove 51, the seal 40 can be limited, thereby limiting the position of the seal 40 in the radial and axial directions, so that the sealing The member 40 can effectively block the gap between the coil assembly 30 and the sleeve 20 . Among them, the support part 50 is provided with a cylindrical structure, which can match the shape of the sleeve 20 and facilitate the support part 50 to be sleeved on the sleeve 20 . Specifically, the sealing member 40 is a sealing ring.

Further, the support part 50 includes a first support ring 52 and a second support ring 53 that are connected to each other. The aperture of the first support ring 52 is larger than the aperture of the second support ring 53. The first support ring 52 is in contact with the coil assembly 30, The area between the inner wall of the first support ring 52 and one end of the second support ring 53 forms an annular groove 51. One end of the second support ring 53 is in contact with the seal 40, and the other end of the second support ring 53 is in contact with the valve body assembly. 10 butt. The first support ring 52 and the second support ring 53 are provided, and the first support ring 52 and the second support ring 53 are provided. The aperture of the support ring 52 is larger than the aperture of the second support ring 53, so that the area between the inner wall of the first support ring 52 and one end of the second support ring 53 forms an annular groove 51; connect the first support ring 52 and the coil assembly 30 is in contact with each other to limit one side of the support portion 50 in the axial direction; the other end of the second support ring 53 is in contact with the valve body assembly 10 to limit the other end of the support portion 50 in the axial direction. One side serves as a limiting function; one end of the second support ring 53 is brought into contact with the seal 40 so that the second support ring 53 can limit the seal 40 in the axial direction. Specifically, the support part 50 is an integral structure.

In this embodiment, the coil assembly 30 includes a coil structure 31 and an inner injection molding shell 33. The inner injection molding shell 33 is located in the coil structure 31 and sleeved on the sleeve 20. The first support ring 52 and the inner injection molding shell 33 are in contact. The inner injection molded shell 33 and the second support ring 53 clamp the seal 40 . The first support ring 52 and the inner injection molding shell 33 are abutted, and the inner injection molding shell 33 and the second support ring 53 clamp the seal 40 so that the seal 40 can seal the gap between the inner injection molding shell 33 and the sleeve 20 Blocking prevents water stains from entering the coil structure 31 during the operation of the solenoid valve.

Specifically, the coil assembly 30 includes a coil structure 31, an outer injection molded shell 32 and a limiting block 34. The outer injection molded shell 32 wraps the coil structure 31, the limiting block 34 is disposed on the outer injection molded shell 32, and the first support ring 52 has a gap 521. , the limiting block 34 is located in the notch 521 to limit the circumferential position of the supporting part 50 . By providing the notch 521 and the limiting block 34, and the limiting block 34 is located in the notch 521, the limiting block 34 can limit the first support ring 52 in the circumferential direction, preventing the first support ring 52 from rotating. . The outer injection molding shell 32 wraps the coil structure 31 to protect the coil structure 31 .

There are a plurality of limiting blocks 34 and a plurality of notches 521 , and the plurality of limiting blocks 34 and the plurality of notches 521 are arranged in one-to-one correspondence. A plurality of limiting blocks 34 and a plurality of notches 521 are provided, and the plurality of limiting blocks 34 and the plurality of notches 521 are arranged in one-to-one correspondence, which further prevents the first support ring 52 from rotating in the circumferential direction.

In this embodiment, the limiting block 34 and the outer injection molded shell 32 are an integral structure formed by injection molding. The limiting block 34 and the outer injection molded shell 32 are provided as an integral structure of injection molding, which facilitates processing and reduces production costs.

Specifically, the axial dimension of the seal 40 is greater than the axial dimension of the first support ring 52 , and/or the aperture of the seal 40 is smaller than the outer diameter of the sleeve 20 . Using the above arrangement, the sealing member 40 can be completely compressed, ensuring the sealing effect of the sealing member 40 .

In this embodiment, the solenoid valve also includes a fixed frame 60. The fixed frame 60 includes a fixed ring and a vertical plate connected to each other. The fixed ring is connected to the coil assembly 30, the vertical plate is connected to the valve body assembly 10, and the support part 50 passes through the fixed frame. ring. By arranging mutually connected fixing rings and vertical plates, the coil assembly 30 and the valve body assembly 10 are conveniently connected, ensuring the stability and reliability of the coil assembly 30 during operation.

Optionally, the fixed ring has a plurality of fitting holes distributed along the circumference of the fixed ring. The outer injection molded shell 32 includes a plurality of connecting posts, each connecting post penetrates into the fitting hole and is connected to the fitting hole.

Optionally, the riser plate has a through hole, the valve body assembly 10 has an assembly hole, and the solenoid valve includes a fastener that passes through the through hole to connect the riser plate and the valve body assembly 10 .

Specifically, the valve body assembly 10 includes a valve seat 11 and a connecting sleeve 12. One end of the connecting sleeve 12 is connected to the valve seat 11, the other end of the connecting sleeve 12 is connected to the sleeve 20, and the support portion 50 is in contact with the valve seat 11. The connecting sleeve 12 is provided to connect the valve seat 11 and the sleeve 20; through the contact between the valve seat 11 and the support part 50, the valve seat 11 can limit the support part 50 in the axial direction. bit effect. Among them, the coil assembly 30 is entirely sleeved on the sleeve 20 . Alternatively, when the sealing member 40 is sleeved on the valve body assembly 10, a part of the coil assembly 30 is sleeved on the connecting sleeve 12, and the sealing member 40 is specifically sleeved on the connecting sleeve 12 to block the coil assembly 30 and the connection. The gap between sets of 12. For the above two situations, the seal 40 prevents water stains from entering the coil assembly 30 during the operation of the solenoid valve, avoiding the problem of corrosion of the coil assembly 30, thereby improving the working performance and service life of the coil assembly 30 .

The above descriptions are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of this application shall be included in the protection scope of this application.

Claims

A solenoid valve, characterized by including:

Valve body assembly (10);

The sleeve (20) is connected to the valve body assembly (10);

Coil assembly (30), at least part of which is sleeved on the sleeve (20);

Seal (40), the seal (40) is sleeved on the sleeve (20) to block the gap between the coil assembly (30) and the sleeve (20), or the A seal (40) is sleeved on the valve body assembly (10) to block the gap between the coil assembly (30) and the valve body assembly (10);

A support portion (50) has one end thereof in contact with the seal (40) and the other end of the support portion (50) in contact with the valve body assembly (10).
The solenoid valve according to claim 1, characterized in that the support part (50) has a cylindrical structure, the support part (50) is sleeved on the sleeve (20), and the support part (50) 50) One end facing the coil assembly (30) has an annular groove (51), and a part of the seal (40) is located in the annular groove (51).
The solenoid valve according to claim 2, characterized in that the support part (50) includes a first support ring (52) and a second support ring (53) connected to each other, the first support ring (52) The aperture is larger than the aperture of the second support ring (53), the first support ring (52) and the coil assembly (30) are in contact, and the inner wall of the first support ring (52) and the third support ring (52) are in contact with each other. The area between one end of the two support rings (53) forms the annular groove (51), and one end of the second support ring (53) is in contact with the seal (40). The other end of 53) is in contact with the valve body assembly (10).
The solenoid valve according to claim 3, characterized in that the coil assembly (30) includes a coil structure (31) and an inner injection molded shell (33), and the inner injection molded shell (33) is located in the coil structure (31). ) and sleeved on the casing (20), the first support ring (52) and the inner injection molding shell (33) are in contact, the inner injection molding shell (33) and the second support Ring (53) clamps the seal (40).
The solenoid valve according to claim 3, characterized in that the coil assembly (30) includes a coil structure (31), an outer injection molded shell (32) and a limiting block (34), and the outer injection molded shell (32) Wrapping the coil structure (31), the limiting block (34) is provided on the outer injection molded shell (32), the first support ring (52) has a gap (521), and the limiting block (34) 34) is located within the notch (521) to define the circumferential position of the support portion (50).
The solenoid valve according to claim 5, characterized in that there are a plurality of said limiting blocks (34), a plurality of said notches (521), a plurality of said limiting blocks (34) and a plurality of said notches (521). The above-mentioned gaps (521) are set in one-to-one correspondence.
The solenoid valve according to claim 5, characterized in that the limiting block (34) and the outer injection molded shell (32) are an integral structure formed by injection molding.
The solenoid valve according to claim 3, characterized in that the axial dimension of the seal (40) is larger than the axial dimension of the first support ring (52), and/or the seal (40) The hole diameter is smaller than the outer diameter of the casing (20).
The solenoid valve according to claim 1, characterized in that the solenoid valve further includes a fixed frame (60), the fixed frame (60) includes a fixed ring and a vertical plate connected to each other, the fixed ring and the The coil assembly (30) is connected, the vertical plate is connected to the valve body assembly (10), and the support part (50) passes through the fixed ring.
The solenoid valve according to claim 1, characterized in that the valve body assembly (10) includes a valve seat (11) and a connecting sleeve (12), one end of the connecting sleeve (12) and the valve seat (12) 11) Connection, the other end of the connecting sleeve (12) is connected to the sleeve (20), and the support portion (50) is in contact with the valve seat (11); in the seal (40) When being sleeved on the valve body assembly (10), a part of the coil assembly (30) is sleeved on the connecting sleeve (12), and the sealing member (40) is sleeved on the connecting sleeve (12). sleeve (12) to block the gap between the coil assembly (30) and the connecting sleeve (12).