An electric valve coil and an electric valve using the same

Abstract

This utility model discloses an electric valve coil and an electric valve using the same application. The coil includes a coil housing and a stator assembly installed within the coil housing. A circuit board is mounted on the coil housing. Unlike existing technologies, the coil housing has a mounting groove with a support portion for supporting the bottom of the circuit board. The circuit board has a fixing portion and a gap portion. The fixing portion is interference-fitted with the coil housing, and the gap portion is spaced from the inner wall of the mounting groove. The structure is simple. The gap portion of the circuit board is spaced from the mounting groove, and the fixing portion of the circuit board is interference-fitted with the coil housing, thereby increasing the stability of the circuit board installation. Furthermore, the contact between the coil cover plate and the protrusions on the circuit board further secures the circuit board.

Description

Technical Field

[0001] This utility model relates to the field of electric valve coil technology, and in particular to an electric valve coil and an electric valve for its application. Background Technology

[0002] The electric valve is driven by a controller that calculates parameters collected by sensors and sends adjustment commands to the drive board. The drive board then outputs an electrical signal to the electric valve, which in turn drives a stepper motor to rotate, causing the valve needle assembly to move up and down, thus adjusting the throttling area of ​​the electric valve and controlling the cooling capacity. An electric valve includes an electric valve coil, rotor assembly, nut, valve core, valve needle, and valve body. Existing electric valve coils include a coil housing, a stator mounted inside the coil housing, a circuit board, a sensor, and a coil cover plate covering the coil housing.

[0003] The circuit board of the existing electric valve coil is installed in the coil housing by soldering, and a gap is formed between the circuit board and the inner wall of the coil housing. As a result, the solder joints are prone to desoldering and product failure due to factors such as vibration and temperature changes during actual operation. Utility Model Content

[0004] To address the technical problems existing in the background art, this utility model proposes an electric valve coil and an electric valve for its application.

[0005] This utility model discloses an electric valve coil, including a coil housing and a stator assembly installed inside the coil housing. A circuit board is mounted on the coil housing. Unlike the prior art, the coil housing has a mounting groove, and the mounting groove has a support portion for supporting the bottom of the circuit board. The circuit board has a fixing portion and a gap portion. The fixing portion is interference-fitted with the coil housing, and the gap portion is spaced from the inner wall of the mounting groove.

[0006] As a further optimization of this utility model, the fixing part of the circuit board has a fixing groove, and a fixing post is provided in the mounting groove, with the fixing post and the fixing groove having an interference fit.

[0007] As a further optimization of this utility model, an auxiliary limiting block is provided in the mounting groove, and the height of the auxiliary limiting block is lower than the height of the support portion. The auxiliary limiting block is used to assist in limiting the deformation of the circuit board.

[0008] As a further optimization of this utility model, the fixing column is installed on the auxiliary limiting block.

[0009] As a further optimization of this utility model, a positioning structure is provided between the coil housing and the circuit board, and the positioning structure is used to position the circuit board during the installation process.

[0010] As a further optimization of this utility model, the positioning structure includes a positioning groove formed on the circuit board and a positioning post disposed in the mounting groove. The positioning post matches the positioning groove, and the positioning post slides in the positioning groove during the installation of the circuit board.

[0011] As a further optimization of this utility model, a Hall groove is formed in the mounting slot, and a sensor is mounted in the Hall groove by a mounting bracket. The mounting bracket is used to fix the sensor in the Hall groove, and the sensor is connected to the circuit board.

[0012] As a further optimization of this utility model, a gap is formed between the mounting bracket and the bottom of the circuit board.

[0013] As a further optimization of this utility model, the sensor includes a housing and pins extending from the housing. The specific structure inside the sensor housing is the same as in the prior art, and will not be described again in this application. The mounting bracket includes a mounting part installed in the Hall groove and a limiting part located outside the Hall groove. The mounting part is used to fix the housing in the Hall groove, and the limiting part contacts the upper surface of the housing.

[0014] As a further optimization of this utility model, a coil cover plate is installed on the coil housing, the coil cover plate is used to close the mounting groove, and the circuit board has a protrusion that contacts the coil cover plate.

[0015] An electric valve includes the electric valve coil described above.

[0016] The electric valve coil and the electric valve it applies to in this invention have a simple structure. The gap between the circuit board and the mounting groove forms an interval, and the fixing part of the circuit board is interference-fitted with the coil housing, thereby increasing the stability of the circuit board installation. Furthermore, the circuit board is further fixed by contacting the coil cover plate with the protrusion on the circuit board. Furthermore, the Hall groove and mounting bracket ensure that the position of the sensor does not change, thus ensuring its detection accuracy.

[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the electric valve coil structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the coil housing structure of this utility model;

[0020] Figure 3 This is a top view of the coil housing of this utility model;

[0021] Figure 4 This is a schematic diagram of the circuit board structure of this utility model;

[0022] Figure 5 This is a schematic diagram of the electric valve coil structure in some embodiments of the present invention;

[0023] Figure 6 This is a schematic diagram of the electric valve structure of this utility model;

[0024] In the diagram: 1. Coil housing; 10. Mounting slot; 11. Support; 12. Hall effect slot; 2. Circuit board; 20. Fixing slot; 21. Positioning slot; 22. Protrusion; 23. Pin; 3. Stator assembly; 4. Fixing post; 5. Auxiliary limiting block; 6. Positioning post; 7. Coil cover; 8. Mounting bracket; 80. Mounting part; 81. Limiting part; 9. Sensor; 90. Housing; 91. Pin. Detailed Implementation

[0025] The embodiments of this utility model are described in detail below. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar symbols denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0026] like Figures 1-5 An electric valve coil is shown, comprising a coil housing 1, a stator assembly 3 installed inside the coil housing 1, and a circuit board 2 mounted on the coil housing 1. The circuit board 2 is connected to the stator assembly 3. Unlike existing technologies, the coil housing 1 has a mounting groove 10, and the mounting groove 10 contains a support portion 11 for supporting the bottom of the circuit board 2. The support portion 11 can be a protrusion within the mounting groove 10, or it can be installed within the mounting groove 10 by means of adhesive or other methods. There are multiple sets of support portions 11, preferably at least four sets. The four sets of support portions 11 are used to support the four corners of the circuit board 2. The circuit board 2 has a fixing portion and a gap portion. The fixing portion is interference-fitted with the coil housing 1, and the gap portion is spaced from the inner wall of the mounting groove 10. In some embodiments, the fixing portion of the circuit board 2 has a fixing groove 20, and the mounting groove 10 contains a fixing post 4. The fixing post 4 is interference-fitted with the fixing groove 20. It should be noted that the cross-section of the fixing post 4 can be rectangular, square, triangular, etc.

[0027] It should be noted that those skilled in the art can provide an extension protrusion on one side of the circuit board 2, and the inner wall of the mounting groove 10 can be provided with a groove that is interference fit with the extension protrusion, thereby achieving an interference fit between the fixing part of the circuit board 2 and the coil housing 1.

[0028] The interference fit between the circuit board 2 and the coil housing 1 ensures the stability of the connection between the circuit board 2 and the coil housing 1, while the gap between the mounting groove 10 and the circuit board 2 facilitates heat dissipation of the circuit board 2.

[0029] Preferably, it also includes an auxiliary limiting block 5, with the fixing post 4 located on the auxiliary limiting block 5. The height of the auxiliary limiting block 5 is lower than the height of the support block, and the side of the auxiliary limiting block 5 opposite to the circuit board 2 has a limiting surface for auxiliary limiting of the circuit board 2.

[0030] In some preferred embodiments, a positioning structure is provided between the coil housing 1 and the circuit board 2. The positioning structure includes a positioning groove 21 formed on the circuit board 2 and a positioning post 6 disposed in the mounting groove 10, the positioning post 6 matching the positioning groove 21.

[0031] Like the existing circuit board 2, the circuit board 2 has pins 23 that connect to the stator assembly 3. The coil housing 1 has a plug interface, and the circuit board 2 also has pins 23 that connect to the plug interface, thus facilitating the connection of the electric valve coil to the controller.

[0032] Preferably, a Hall groove 12 is formed in the mounting groove 10, and a sensor 9 is mounted in the Hall groove 12 by a mounting bracket 8. The sensor 9 is connected to the circuit board 2. The mounting bracket 8 limits the sensor 9 in the Hall groove 12 to prevent the sensor 9 from being displaced relative to the stator assembly 3 or the rotor assembly in the electric valve, thereby improving the detection accuracy.

[0033] Preferably, a gap is formed between the top of the mounting bracket 8 and the bottom of the circuit board 2.

[0034] Specifically, similar to the existing sensor 9, this sensor 9 includes a housing 90 and pins extending beyond the housing 90. The pins are connected to the circuit board 2. The mounting bracket 8 includes a mounting portion 80 installed within the Hall effect slot 12. The mounting portion 80 abuts against the housing 90 located within the Hall effect slot 12. The mounting bracket 8 also includes a limiting portion 81 connected to the mounting portion 80. The pins pass through the limiting portion 81, and the limiting portion 81 has a portion that contacts the upper surface of the housing 90. The mounting portion 80 can be fixed within the Hall effect slot 12 by adhesive or by fasteners such as screws. This achieves the limiting of the sensor 9.

[0035] like Figure 5 As shown, in some embodiments, preferably, a coil cover plate 7 is installed on the coil housing 1, the coil cover plate 7 is used to close the mounting groove 10, and the circuit board 2 has a protrusion 22, which contacts the coil cover plate 7 to further position the circuit board 2.

[0036] like Figure 6As shown, an electric valve includes the aforementioned electric valve coil, which is mounted on the valve seat of the electric valve.

[0037] It should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0038] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0039] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0040] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Moreover, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature.

[0041] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An electric valve coil, comprising a coil housing (1) and a stator assembly (3) mounted within the coil housing (1), wherein a circuit board (2) is mounted on the coil housing (1), characterized in that, The coil housing (1) has a mounting groove (10), and the mounting groove (10) has a support part (11) for supporting the bottom of the circuit board (2). The circuit board (2) has a fixing part and a gap part. The fixing part is interference-fitted with the coil housing (1), and the gap part is spaced from the inner wall of the mounting groove (10).

2. The electric valve coil according to claim 1, characterized in that, The circuit board (2) has a fixing groove (20) on its fixing part, and a fixing post (4) is provided in the mounting groove (10). The fixing post (4) is interference-fitted with the fixing groove (20).

3. The electric valve coil according to claim 1, characterized in that, An auxiliary limiting block (5) is provided in the mounting groove (10), and the height of the auxiliary limiting block (5) is lower than the height of the support part (11).

4. The electric valve coil according to claim 1, characterized in that, A coil cover plate (7) is installed on the coil housing (1). The coil cover plate (7) is used to close the mounting groove (10). The circuit board (2) has a protrusion (22) that contacts the coil cover plate (7).

5. The electric valve coil according to claim 1, characterized in that, A positioning structure is provided between the coil housing (1) and the circuit board (2), and the positioning structure is used to position the circuit board (2) during the installation process.

6. The electric valve coil according to claim 5, characterized in that, The positioning structure includes a positioning groove (21) formed on the circuit board (2) and a positioning post (6) disposed in the mounting groove (10). During the installation of the circuit board (2), the positioning post (6) slides in the positioning groove (21).

7. The electric valve coil according to claim 1, characterized in that, A Hall groove (12) is formed in the mounting slot (10). A sensor (9) is mounted in the Hall groove (12) by a mounting bracket (8). The mounting bracket (8) is used to fix the sensor (9) in the Hall groove (12). The sensor (9) is connected to the circuit board (2).

8. The electric valve coil according to claim 7, characterized in that, A gap is formed between the mounting bracket (8) and the bottom of the circuit board (2).

9. The electric valve coil according to claim 7, characterized in that, The sensor (9) includes a housing (90) and pins (91) extending out of the housing (90). The mounting bracket (8) includes a mounting portion (80) installed in the Hall groove (12) and a limiting portion (81) located outside the Hall groove (12). The mounting portion (80) is used to fix the housing (90) in the Hall groove (12), and the limiting portion (81) contacts the upper surface of the housing (90).

10. An electric valve, characterized in that, Includes the electric valve coil as described in any one of claims 1-9.

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