Electric valve

Abstract

The electric valve comprises a sheath, a valve body and a coil component, the sheath is provided with a mounting part and a supporting part, the valve body is partially located in the mounting part, the coil component is sleeved with the valve body, one side of the coil component abuts against the supporting part, and a circumferential matching part and an axial matching part are arranged between the coil component and the sheath. Therefore, the coil component and the sheath are in circumferential limiting connection and axial limiting connection. The valve further comprises an elastic component, the valve body is provided with a step part, the elastic component is arranged on the periphery of the valve body in a sleeving mode, one end of the elastic component directly or indirectly abuts against the step part, the other end of the elastic component directly or indirectly abuts against the coil component, and the side, away from the elastic component, of the step part abuts against the end wall of the installation part. According to the electric valve, the technical scheme that axial limiting and circumferential limiting are separated is adopted, the axial matching part is arranged, the elastic component is additionally arranged to play a pre-tightening role and eliminate the assembly clearance, the axial matching part can be in clearance fit, assembly interference is avoided, the coil component is prevented from axially shaking, and the working performance of the electric valve is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of valves, and in particular to an electric valve. Background Art

[0002] In recent years, more and more electric switching valves are used in refrigerator systems. The valve uses the principle of a stepper motor and uses a coil to drive the rotor component to rotate, thereby driving the slider to rotate, controlling the on-off relationship between the inlet and multiple outlets. The control is reliable, the energy consumption is low, and one electric valve can realize multiple working modes, effectively simplifying the system.

[0003] The electric valve mainly includes a valve body, a coil and a mounting part. The valve body is installed inside the mounting part. The valve body shell is provided with a segmented step and the coil component is positioned. Two hook structures are provided on the mounting part. The coil is provided with a corresponding connecting boss. The hook structure and the connecting boss are connected correspondingly to achieve a limited connection. However, if the two are tightly fitted, interference is likely to occur and the installation cannot be in place; if there is a clearance fit, the coil is likely to shake, affecting performance.

[0004] Therefore, for those skilled in the art, how to avoid the loosening of the coil component as much as possible and achieve a reliable connection between the coil component and the valve body of the electric valve is a technical problem that needs to be solved urgently. Summary of the invention

[0005] The object of the present invention is to provide an electric valve which can avoid the loosening of the coil component as much as possible and realize a reliable connection between the coil component and the valve body.

[0006] In order to solve the above technical problems, the present invention provides an electric valve, comprising a sleeve, a valve body and a coil component, wherein the sleeve has a mounting portion and a support portion located at the periphery of the mounting portion, the valve body portion is located inside the mounting portion, the coil component is sleeved on the valve body, one side of the coil component abuts against the support portion, and a circumferential matching portion and an axial matching portion are provided between the coil component and the sleeve, so that the coil component and the sleeve are connected in a circumferential limiting connection and an axial limiting connection;

[0007] The electric valve also includes an elastic component, the valve body has a step portion, the elastic component is sleeved on the outer periphery of the valve body, one end of the elastic component directly or indirectly abuts against the step portion, the other end directly or indirectly abuts against the coil component, and the side of the step portion away from the elastic component abuts against the end wall of the mounting portion.

[0008] The electric valve provided by the present invention has an axial matching portion and a circumferential matching portion respectively provided between the coil component and the sleeve to achieve circumferential and axial limitation between the coil component and the sleeve, and an elastic component is additionally provided on this basis, one end of the elastic component directly or indirectly abuts against the step portion, and the other end directly or indirectly abuts against the coil component, and the side of the step portion away from the elastic component abuts against the end wall of the mounting portion, and the elastic deformation effect of the elastic component is utilized to realize an axial pre-compression state, eliminate the axial assembly gap between the coil component and the mounting portion, realize anti-loosening of components, and relatively realize reliable connection between the coil component and the valve body. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 A schematic structural diagram of a specific embodiment of the electric valve provided by the present invention;

[0010] Figure 2 for Figure 1 The schematic diagram of the structure of the electric valve from the second angle;

[0011] Figure 3 for Figure 1 Axial cross-sectional view of the electric valve;

[0012] Figure 4 for Figure 1 A partial enlarged view of the electric valve;

[0013] Figure 5 for Figure 1 Schematic diagram of electric valve;

[0014] Figure 6 for Figure 5 Schematic diagram of the structure of the sheath in the electric valve;

[0015] Figure 7 for Figure 6 A schematic diagram of the structure of the sheath at the second angle;

[0016] Figure 8 for Figure 6 Schematic diagram of the structure of the sheath at the third angle;

[0017] Figure 9 for Figure 5 Schematic diagram of the structure of the coil component in the electric valve;

[0018] Figure 10 for Figure 9 A schematic diagram of the structure of the coil component from a second angle;

[0019] Figure 11 for Figure 5 Schematic diagram of the structure of the valve body in the electric valve;

[0020] in, Figures 1-11 The reference numerals in the figures are described as follows:

[0021] 1 - Sheath;

[0022] 11 - Installation part;

[0023] 111 - End wall;

[0024] 12 - Support part;

[0025] 2 - Valve body;

[0026] 21 - Step part;

[0027] 3 - Coil component;

[0028] 4 - Elastic component;

[0029] a - Circumferential limiting groove;

[0030] b - Circumferential limiting protrusion;

[0031] b1 - First protrusion section;

[0032] b2 - Second protrusion section;

[0033] c - Axial limiting buckle;

[0034] c1 - Limiting card slot;

[0035] d - Axial limiting protrusion;

[0036] A - Second limiting part. Detailed implementation mode

[0037] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0038] As used herein, "a plurality" generally means more than two; and when "a plurality" is used to represent the quantity of several components, it does not represent the mutual relationship in quantity of these components.

[0039] Please refer to Figures 1-5 , Figure 1 which is a schematic structural diagram of a specific embodiment of the electric valve provided by the present invention; Figure 2 is Figure 1 a schematic structural diagram of the electric valve from a second angle; Figure 3 is Figure 1 an axial sectional view of the electric valve; Figure 4 is Figure 1 a partial enlarged view of the electric valve; Figure 5 is Figure 1 a split view of the electric valve.

[0040] The present invention provides an electric valve, comprising a sleeve 1, a valve body 2 and a coil component 3, wherein the sleeve 1 has a mounting portion 11 and a support portion 12 located on the periphery of the mounting portion 11, the valve body 2 is partially located inside the mounting portion 11, the coil component 3 is sleeved on the valve body 2, one side of the coil component 3 abuts against the support portion 12, and a circumferential matching portion and an axial matching portion are provided between the coil component 3 and the sleeve 1, so that the coil component 3 and the sleeve 1 are connected in a circumferential limiting manner and in an axial limiting manner;

[0041] The electric valve also includes an elastic component 4. The valve body 2 has a step portion 21. The elastic component 4 is sleeved on the outer periphery of the valve body 2. One end of the elastic component 4 directly or indirectly abuts against the step portion 21, and the other end directly or indirectly abuts against the coil component 3. The side of the step portion 21 facing away from the elastic component 4 abuts against the end wall 111 of the mounting portion 11.

[0042] The electric valve of the present invention changes the technical solution of the prior art that uses the same limiting structure to simultaneously realize the axial and circumferential limiting of the coil, separates the axial limiting and circumferential limiting of the coil component 3, and the limiting is more accurate. Specifically, a circumferential matching portion is arranged between the coil component 3 and the sleeve 1, and the circumferential matching portion is only used to realize the circumferential limiting connection between the coil component 3 and the sleeve 1. Therefore, the circumferential matching portion can be clearance-fitted or unlimited in the axial direction, which is convenient for the installation between the coil component 3 and the sleeve 1, solves the problem of assembly interference, and avoids the circumferential rotation of the coil component 3 as much as possible; at the same time, an axial matching portion is arranged between the coil component 3 and the sleeve 1, and an elastic component 4 is added in the axial direction. The elastic component 4 is installed between the step portion 21 and the corresponding end wall of the coil component 3, which can play a pre-tightening role and eliminate the axial assembly gap between the coil component 3 and the sleeve 1. In this way, the axial matching portion can adopt clearance fit in both the axial and circumferential directions, which can avoid assembly interference and ensure the reliable installation of the coil component 3 and the sleeve 1, and avoid the axial shaking of the coil component 3 as much as possible, so as to ensure the working performance of the electric valve.

[0043] In addition, the elastic component 4 is located between the sheath 1, the valve body 2 and the coil component 3, and can also play a role in buffering, shock reduction and shock absorption, thereby reducing product noise.

[0044] Please continue to refer to Figure 3 and Figure 4 In the present invention, a recessed portion is provided in the middle of the end wall of the sheath 1, and the recessed portion forms the aforementioned mounting portion 11. The end wall of the sheath 1 forms a supporting portion 12 around the recessed portion. The supporting portion 12 is located at the opening end of the mounting portion 11, and a portion of the valve body 2 is located in the recessed portion. The elastic component 4 is radially located between the valve body 2 and the peripheral wall of the recessed portion to achieve positioning and installation of the valve body 2. The coil component 3 is installed inside the sheath 1 and supported by the supporting portion 12. The supporting portion 12 is used to achieve positioning and installation of the coil component 3.

[0045] Please continue to refer toFigures 5-10 , Figure 6 is Figure 5 a schematic structural view of a sheath in an electric valve; Figure 7 is Figure 6 a schematic structural view of the sheath from a second angle; Figure 8 is Figure 6 a schematic structural view of the sheath from a third angle; Figure 9 is Figure 5 a schematic structural view of a coil component in an electric valve; Figure 10 is Figure 9 a schematic structural view of the coil component from a second angle.

[0046] In the present invention, a circumferential limiting groove a is provided on the peripheral wall of the sheath 1, and a circumferential limiting protrusion b is provided on the peripheral wall of the coil component 3. In the installed state, the coil component 3 is located inside the peripheral wall of the sheath 1, and the circumferential limiting protrusion b is clamped inside the circumferential limiting groove a for circumferential limitation. The circumferential limiting groove a and the circumferential limiting protrusion b form the aforementioned circumferential engaging portion.

[0047] It can be seen that the circumferential limiting groove a extends axially, and the open end of the circumferential limiting groove a faces the coil component 3. During installation, the coil component 3 gradually moves axially towards the side close to the sheath 1, and the circumferential limiting protrusion b is clamped inside the circumferential limiting groove a accordingly to achieve the circumferential limitation of the coil component 3 and the sheath 1.

[0048] It can be understood that in order to ensure reliable circumferential limitation of the coil component 3, the width of the circumferential limiting protrusion b should be approximately equal to the width of the circumferential limiting groove a. In the installed state, the side walls in the width direction of the circumferential limiting protrusion b and the circumferential limiting groove a are correspondingly abutted.

[0049] In the above embodiment, the circumferential limiting groove a is provided on the sheath 1, and the circumferential limiting protrusion b is provided on the coil component 3. In practical applications, it is also feasible to provide the circumferential limiting groove a on the coil component 3 and the circumferential limiting protrusion b on the sheath 1.

[0050] From Figures 5-10 it can be seen that in this embodiment, the number of the circumferential engaging portions is one. In practical applications, the number of the circumferential engaging portions provided between the coil component 3 and the sheath 1 can be one or more, and multiple circumferential engaging portions can be distributed circumferentially.

[0051] Please continue to refer to Figure 9 , in this embodiment, the circumferential limiting protrusion b includes a first protrusion segment b1 located in the middle of the axis, and second protrusion segments b2 connected to both axial ends of the first protrusion segment b1. The widths of the first protrusion segment b1 are equal, the width of the second protrusion segment b2 gradually decreases in the direction away from the first protrusion segment b1, and the width of the first protrusion segment b1 is equivalent to the width of the circumferential limiting groove a.

[0052] In this way, in the installed state, the first protrusion segment b1 and the corresponding side wall of the circumferential limit groove a abut against each other to limit the circumferential position, thereby ensuring that the circumferential limit of the coil component 3 is reliable. The width of the second protrusion segment b2 gradually decreases in the direction away from the first protrusion segment b1. On the one hand, the second protrusion segment b2 relatively close to one end of the sheath 1 can play a guiding role, making it easier to insert the circumferential limit protrusion b into the circumferential limit groove a, making the installation more convenient. On the other hand, the circumferential limit protrusion b only contacts the circumferential limit groove a through the first protrusion segment b1, thereby reducing the contact area between the circumferential limit protrusion b and the circumferential limit groove a, and making it easier to disassemble the coil component 3.

[0053] Please continue to refer to Figures 5-10 The peripheral wall of the sheath 1 is provided with an axial limit buckle c, and the peripheral wall of the coil component 3 is provided with an axial limit protrusion d. In the installed state, the coil component 3 is located on the inner side of the peripheral wall of the sheath 1, and the axial limit protrusion d is clamped in the axial limit buckle c for axial limitation. The axial limit protrusion d and the axial limit buckle c form the aforementioned axial matching part.

[0054] Specifically, the axial limit buckle c has a limit slot c1 extending axially, and the end of the limit slot c1 away from the sleeve 1 is a closed end, and the end wall of the closed end forms a first limit portion, and the axial limit protrusion d forms a second limit portion A on the end wall facing away from the sleeve 1. During the installation process, the axial limit buckle c can be first radially stretched outward to avoid interference with the installation of the coil component 3. When the coil component 3 moves to the preset installation position, the axial limit buckle c is released to make the axial limit buckle c rebound radially. In the installed state, the axial limit protrusion d is located inside the limit slot c1, and the first limit portion and the second limit portion A abut against each other, so as to realize the axial limitation of the coil component 3 and the sleeve 1.

[0055] It can be understood that, in order to ensure the convenience of installing the coil component 3, the width of the limiting groove c1 can be greater than the width of the axial limiting protrusion d, and the axial length of the limiting groove c1 can also be greater than the axial length of the axial limiting protrusion d.

[0056] Further, by Figure 6 It can be seen that in this embodiment, the end of the limiting slot c1 close to the sheath 1 is an open end. In practical applications, it is also feasible that the end of the limiting slot c1 close to the sheath 1 is closed.

[0057] Depend on Figure 8 and Figure 10 It can be seen that in this embodiment, the number of axial matching parts arranged between the coil component 3 and the sheath 1 is two, and the two axial matching parts are arranged radially opposite to each other.

[0058] In this way, the coil component 3 and the sheath 1 are limited together at both ends to prevent the coil component 3 from tipping over, thereby ensuring the installation reliability of the coil component 3.

[0059] It can be understood that in practical applications, the number of axially mating portions provided between the coil component 3 and the sheath 1 can also be more than two, and the relative positions of the axially mating portions are not strictly limited. The axially mating portions can be circumferentially distributed as long as the reliable installation of the coil component 3 can be ensured.

[0060] Please continue to refer to Figure 3 and Figure 4 , in this embodiment, the elastic component 4 is of a cylindrical structure. The elastic component 4 is sleeved on the valve body 2, and the elastic component 4 is located between the circumferential wall of the mounting portion 11 and the valve body 2 in the radial direction.

[0061] With the above settings, the elastic component 4 is of a cylindrical structure. In the installed state, the corresponding end walls between the stepped portion 21 and the coil component 3 are in uniform circumferential contact through the elastic component 4, ensuring the balanced force of the coil component 3 in the circumferential direction, and further ensuring the installation position accuracy of the coil component 3.

[0062] Among them, the inner diameter of the elastic component 4 can be slightly larger than the outer diameter of the valve body 1 for easy installation.

[0063] Among them, the elastic component 4 can be a helical spring or can be made of a flexible material such as a rubber block or a nylon block. When the elastic component 4 is a helical spring, the number of helical springs can be one. At this time, the helical spring is sleeved on the valve body 2; the number of helical springs can also be multiple. At this time, multiple helical springs can be arranged around the valve body 2 in a circle to ensure the balanced force of the coil component 3 in the circumferential direction.

[0064] Please refer to Figure 5 and Figure 11 , Figure 11 is Figure 5 a schematic structural view of the valve body in the electric valve.

[0065] In this embodiment, the housing of the valve body 2 includes a large-diameter section and a small-diameter section. The stepped portion 21 is formed between the large-diameter section and the small-diameter section. Both the large-diameter section and the small-diameter section are of a cylindrical structure. The elastic component 4 has a cylindrical mounting hole. In the installed state, the elastic component 4 is sleeved on the small-diameter section, and the corresponding end wall of the elastic component 4 abuts against the stepped portion 21.

[0066] The above has introduced in detail an electric valve provided by the present invention. Specific examples are used in this article to elaborate on the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and modifications can still be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. An electric valve, characterized in that, It includes a sheath (1), a valve body (2) and a coil component (3). The sheath (1) has a mounting portion (11) and a supporting portion (12) located on the outer periphery of the mounting portion (11). Part of the valve body (2) is located inside the mounting portion (11). The coil component (3) is sleeved on the valve body (2). One side of the coil component (3) abuts against the supporting portion (12). A circumferential matching portion and an axial matching portion are provided between the coil component (3) and the sheath (1) to circumferentially limit and axially limit the connection between the coil component (3) and the sheath (1). The electric valve further includes an elastic component (4). The valve body (2) has a stepped portion (21). The elastic component (4) is sleeved on the outer peripheral portion of the valve body (2). One end of the elastic component (4) directly or indirectly abuts against the stepped portion (21), and the other end directly or indirectly abuts against the coil component (3). The side of the stepped portion (21) facing away from the elastic component (4) abuts against the end wall (111) of the mounting portion (11).

2. The electric valve according to claim 1, wherein The middle of the end wall of the sheath (1) has a concave portion, and the concave portion forms the mounting portion (11). The end wall of the sheath (1) forms the supporting portion (12) around the concave portion.

3. The electric valve according to claim 1, wherein Among the circumferential walls of the sheath (1) and the coil component (3), one is provided with a circumferential limiting groove (a), and the other is provided with a circumferential limiting protrusion (b). In the installed state, the coil component (3) is located inside the circumferential wall of the sheath (1), and the circumferential limiting protrusion (b) is clamped inside the circumferential limiting groove (a) for circumferential limitation. The circumferential limiting groove (a) and the circumferential limiting protrusion (b) form the circumferential matching portion.

4. The electric valve according to claim 3, wherein The circumferential limiting protrusion (b) includes a first protrusion segment (b1) located in the middle of the axis, and second protrusion segments (b2) connected to both axial ends of the first protrusion segment (b1). The widths of the first protrusion segment (b1) are equal. The widths of the second protrusion segments (b2) gradually decrease in the direction away from the first protrusion segment (b1). The width of the first protrusion segment (b1) is equivalent to the width of the circumferential limiting groove (a).

5. The electric valve according to claim 1, characterized in that, Among the circumferential walls of the sheath (1) and the coil component (3), one is provided with an axial limiting buckle (c), and the other is provided with an axial limiting protrusion (d). In the installed state, the coil component (3) is located inside the circumferential wall of the sheath (1), and the axial limiting protrusion (d) is clamped inside the axial limiting buckle (c) for axial limitation. The axial limiting protrusion (d) and the axial limiting buckle (c) form the axial matching portion.

6. The electric valve according to claim 5, wherein The axial limiting buckle (c) has a limiting slot (c1) extending axially. One end of the limiting slot (c1) away from the sheath (1) is a closed end, and the end wall of the closed end forms a first limiting portion. The end wall of the axial limiting protrusion (d) facing away from the sheath (1) forms a second limiting portion (A). In the installed state, the axial limiting protrusion (d) is located inside the limiting slot (c1), and the first limiting portion and the second limiting portion (A) are in contact with each other.

7. The electric valve according to claim 5, wherein The number of the axial matching portions provided between the coil component (3) and the sheath (1) is multiple, and the multiple axial matching portions are circumferentially distributed.

8. The electric valve according to claim 7, characterized in that, The number of the axial matching portions provided between the coil component (3) and the sheath (1) is two, and the two axial matching portions are arranged radially opposite to each other.

9. The electric valve according to any one of claims 1-8, characterized in that, The elastic component (4) has a cylindrical structure. The elastic component (4) is sleeved on the valve body (2), and the elastic component (4) is located radially between the peripheral wall of the mounting portion (11) and the valve body (2).

10. The electric valve according to claim 9, characterized in that The elastic component (4) is made of a flexible material.

11. The electric valve according to claim 10, wherein, The elastic component (4) includes a rubber block.

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