Valve device

Abstract

The valve device comprises a coil assembly and a sealing piece, the coil assembly comprises a shell part, the shell part comprises a supporting part, the supporting part is provided with a clamping receiving part, the sealing piece is provided with a main sealing part and a clamping providing part, and the clamping providing part is matched with the clamping receiving part in a clamping mode. The main seal portion is pressed by the support portion and the valve member. Therefore, the structure is relatively simple, and the mounting efficiency of the valve device is improved.

Description

Technical Field

[0001] The present application relates to the field of fluid control technology, and in particular to a valve device. Background Art

[0002] The valve device includes a coil assembly and a valve component. A sealing ring is arranged between the coil assembly and the valve component. The sealing ring can seal the gap between the coil assembly and the valve component. In the related art, the coil assembly, the valve component and the sealing ring need to be transported separately. In the final assembly stage, the sealing ring is first sleeved on the valve component, and then the coil assembly is sleeved on the valve component. At this time, the sealing ring is pressed between the coil assembly and the valve component. With this arrangement, the coil assembly, the valve component and the sealing component are independent of each other before assembly, and an additional sealing component installation process needs to be added during installation, which is not conducive to improving installation efficiency. Summary of the invention

[0003] The purpose of the present application is to provide a valve device, which is conducive to improving the installation efficiency of the valve device.

[0004] To achieve the above purpose, one embodiment of the present application adopts the following technical solution:

[0005] A valve device, the valve device includes a coil assembly and a valve component, the coil assembly is arranged on the outer periphery of the valve component, the coil assembly includes an outer shell portion, the outer shell portion includes a support portion, the support portion has a snap-fit ​​receiving portion, the valve device also includes a sealing member 4, the sealing member has a main sealing portion and a snap-fit ​​providing portion, the snap-fit ​​providing portion is snap-fitted with the snap-fit ​​receiving portion, and the main sealing portion is pressed by the support portion and the valve component.

[0006] An embodiment of the present application provides a valve device, which includes a coil assembly and a sealing member, wherein the coil assembly includes a housing portion, the housing portion includes a support portion, the support portion has a snap-fit ​​receiving portion, the sealing member includes a main sealing portion and a snap-fit ​​providing portion, the snap-fit ​​providing portion is snap-fitted with the snap-fit ​​receiving portion, and the main sealing portion is pressed by the support portion and the valve member. Such a structure is relatively simple, which is conducive to improving the installation efficiency of the valve device. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 is a front view structural schematic diagram of a first embodiment of the valve device provided by the present application from one viewing angle;

[0008] Figure 2 yes Figure 1 Schematic diagram of the cross-sectional structure of the middle valve device along the AA plane;

[0009] Figure 3 yes Figure 2 A schematic diagram of the enlarged structure of the middle part A;

[0010] Figure 4 yes Figure 2 A schematic cross-sectional view of the coil assembly from one perspective;

[0011] Figure 5 yes Figure 2 A schematic diagram of the three-dimensional structure of the middle seal from one perspective;

[0012] Figure 6 yes Figure 5 A schematic cross-sectional view of the middle seal from one perspective;

[0013] Figure 7 is a schematic diagram of a three-dimensional structure of a coil assembly in a second embodiment of a valve device from one perspective;

[0014] Figure 8 yes Figure 7 A schematic cross-sectional view of the coil assembly from one perspective;

[0015] Fig. 9 yes Figure 8 A schematic diagram of the three-dimensional structure of the middle seal from one perspective;

[0016] Fig.10 yes Fig. 9 A schematic diagram of the three-dimensional structure of the middle seal from another perspective;

[0017] Fig.11 is a schematic cross-sectional structural diagram of a coil assembly in a third embodiment of a valve device from one viewing angle;

[0018] Fig.12 yes Fig.11 A schematic diagram of the three-dimensional structure of the middle seal from one perspective;

[0019] Fig.13 yes Fig.12 A schematic diagram of the three-dimensional structure of the middle seal from another perspective;

[0020] Fig.14 yes Fig.12 A schematic cross-sectional view of the middle seal from one perspective;

[0021] Fig.15 is a schematic cross-sectional structural diagram of a combined structure of a coil assembly and a sealing member in a fourth embodiment of a valve device from one viewing angle;

[0022] Fig.16 yes Fig.15 A schematic cross-sectional view of the coil assembly from one perspective;

[0023] Fig.17 yes Fig.15 A schematic diagram of the three-dimensional structure of the middle seal from one perspective;

[0024] Fig.18 yes Fig.17 A schematic diagram of the cross-sectional structure of the middle seal from one perspective. DETAILED DESCRIPTION

[0025] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments. In order to fully understand the present invention, many specific details are mentioned in the following detailed description. However, it should be understood by those skilled in the art that the specific components, devices and features illustrated in the accompanying drawings and described herein are merely exemplary and should not be regarded as limiting.

[0026] The valve device 100 can be used in automotive, household or commercial air conditioning cooling systems, and can also be used in automotive battery cooling systems or battery cooling systems in other fields. In the above-mentioned cooling systems, the valve device 100 is generally used as a throttling element or a switching element, or as an element with both throttling and switching functions. This application is described with the valve device 100 as a throttling element.

[0027] refer to Figure 1-Figure 2 , schematically introduces an embodiment of a valve device 100 as a throttling element. The valve device 100 includes a coil assembly 1, a valve component 2 and a valve body 3. The valve component 2 has a sleeve 21 and a valve seat assembly 22, the sleeve 21 is fixedly connected to the valve seat assembly 22, and the connection between the two is sealed, and the connection method includes welding, bonding, etc. The coil assembly 1 has a receiving cavity 13, and at least part of the sleeve 21 is located in the receiving cavity 13 of the coil assembly 1. The valve body 3 has a valve body cavity 31, and at least part of the valve seat assembly 22 is located in the valve body cavity 31 of the valve body 3. The valve seat assembly 22 is fixedly connected to the valve body 3, and the connection method includes threaded connection or connection through a threaded member. The valve body 3 can be a separate valve block, or it can be a part of other components, for example, it can be a part of a heat exchanger or a flow channel plate in a cooling system. This application takes the valve body 3 as a separate valve block as an example for explanation, the valve component 2 is first fixedly connected to the valve body 3, and the coil assembly 1 is then sleeved on the outer periphery of the valve component 2 and fixedly connected to the valve body 3, and the connection method includes screw connection, clamping, etc.

[0028] The coil assembly 1 includes a shell 11 and a stator assembly 12. The shell is made of plastic. In this embodiment, the stator assembly 12 is used as an insert and is formed by injection molding. The shell 11 covers part of the stator assembly 12, and the stator assembly 12 is located outside the sleeve 21. In other embodiments, the shell 11 and the stator assembly 12 can be a split structure. The shell 11 is formed by injection molding, and the shell 11 forms a cavity. The stator assembly 12 can be installed in the cavity formed by the shell 11 and is fixedly connected to the shell 11. The connection method includes screw connection, clamping, etc. The valve component 2 also includes a rotor assembly 23, and the rotor assembly 23 is located in the inner cavity formed by the sleeve 21. The valve component 2 also includes a screw valve core assembly 24 and a nut assembly 25. The screw valve core assembly 24 is fixedly connected to the rotor assembly 23, and the screw valve core assembly 24 and the nut assembly 25 are threadedly matched. When a predetermined current is passed through the stator assembly 12, an excitation magnetic field can be generated to drive the rotor assembly 23 to rotate. The rotor assembly 23 can drive the screw valve core assembly 24 to rotate. The screw valve core assembly 24 can move relative to the upper and lower axes of the valve port 221 set on the valve seat assembly 22, and the valve core portion 241 set on the screw valve core assembly 24 cooperates with the valve port 221 to adjust the flow area of ​​the valve port 221, thereby adjusting the flow rate of the refrigerant in the cooling system.

[0029] refer to Figure 2-Figure 6 The valve device 100 includes a seal 4, which is engaged with the coil assembly 1, and at least part of the seal 4 is pressed between the coil assembly 1 and the valve component 2. The seal 4 is made of rubber. In other embodiments, it can also be made of polytetrafluoroethylene or other materials. The seal 4 plays a sealing role to prevent external gas or liquid from entering the gap between the coil assembly 1 and the sleeve 21, which will have an adverse effect on the valve device 100, such as corrosion of the stator claw pole of the stator assembly 12. The shell 11 includes a support portion 111, and the support portion 111 is arranged at the lower end of the shell 11. In this embodiment, the support portion 111 has a snap receiving portion 1111, and the seal 4 has a main seal portion 41 and a snap providing portion 42. The snap providing portion 42 is snap-fitted with the snap receiving portion 1111. The seal 4 and the support portion 111 are limited by the snap-fitting of the snap providing portion 42 and the snap receiving portion 1111, and the main seal portion 41 is pressed by the support portion and the valve component 2. With this arrangement, the seal 4 can be limited in position with the coil assembly 1 using a very simple structure. The seal 4 can be pre-limited on the coil assembly 1, which is beneficial for transporting the two as a component and convenient for transportation; it is also beneficial for installing the two as a component with the valve component 2 and the valve body 3, which can reduce the installation process and improve the installation efficiency.

[0030] refer to Figure 2-Figure 6In this embodiment, the shell portion 11 covers a portion of the stator assembly 12 by injection molding, the whole or a part of the support portion 111 is a cylindrical structure extending in the axial direction, and the snap-fit ​​receiving portion 1111 is directly formed by injection molding, or the support portion 111 is pre-injected and then the snap-fit ​​receiving portion 1111 is machined on the support portion 111 to form the snap-fit ​​receiving portion 1111.

[0031] Combination Figure 2-Figure 6 In the first embodiment of the present application, the engaging portion 42 is integrally formed with the main sealing portion 41, and the engaging portion 42 is arranged on the outside relative to the main sealing portion 41. The engaging portion 42 is roughly rectangular in shape, and the outer peripheral surface of the engaging portion 42 is flat. The support portion 111 has a limiting groove 1112, and the wall forming the limiting groove 1112 serves as the engaging portion 1111. The wall forming the limiting groove 1112 includes a first inner peripheral wall 1113. The outer diameter of the engaging portion 42 is larger than the inner diameter of the first inner peripheral wall 1113 under normal conditions. After the engaging portion 42 is inserted into the limiting groove 1112, the engaging portion 42 is interference-engaged with the support portion 111, and the main sealing portion 41 is in abutment with the valve component 2, thereby pressing the seal 4 between the support portion 111 and the valve component 2. In this embodiment, the engagement providing portion 42 can be directly formed by injection molding, and there is no problem of difficulty in demoulding the injection molding. The assembly of the seal 4 and the coil assembly 1 is also relatively simple, which is conducive to reducing costs. Specifically, in this embodiment, the main sealing portion 41 is in abutment with the sleeve 21. In other embodiments, the main sealing portion 41 can also be in abutment with the valve seat assembly 22.

[0032] Combination Figure 7-Figure 10 , and refer to Figure 2In the second embodiment of the present application, the engagement providing portion 42 of the sealing member 4 includes a first protrusion 421 and a second protrusion 422, and the first protrusion 421 and the second protrusion 422 protrude radially outward from the main sealing portion 41. The supporting portion 111 has a first notch portion 111a and a second notch portion 111b, and the position of the first protrusion 421 is set corresponding to the first notch portion 111a, and the position of the second protrusion 422 is set corresponding to the second notch portion 111b. The first protrusion 421 is in interference fit with the first notch portion 111a, and the second protrusion 422 is in interference fit with the second notch portion 111b, and the main sealing portion 41 is pressed between the supporting portion 111 and the valve component 2. In this embodiment, the first notch portion 111a and the second notch portion 111b have openings at the bottom of the support portion 111, respectively. The first protrusion 421 is inserted into the first notch portion 111a from the opening from bottom to top along the axial direction, and the insertion process of the second protrusion 422 is the same. In this embodiment, the first protrusion 421 and the second protrusion 422 are symmetrically arranged. Of course, a third protrusion and a fourth protrusion may be further arranged. In this embodiment, the first notch portion 111a and the second notch portion 111b can be directly formed by injection molding, and there is no problem of difficulty in demolding the injection molding. The assembly of the seal 4 and the coil assembly 1 is also relatively simple, which is conducive to reducing costs.

[0033] Combination Figure 11-Figure 14 , and refer to Figure 2 In the third embodiment of the present application, the main sealing portion 41 is annular, and the engaging portion 42 is protruded and extended radially outward from the main sealing portion 41. In this embodiment, the engaging portion 42 is roughly annular, and the thickness of the engaging portion 42 is relatively smaller than the thickness of the main sealing portion 41. The support portion 111 has a limiting groove 1112, and the limiting groove 1112 is formed on the inner peripheral wall of the support portion 111. The limiting groove 1112 is recessed in the radial direction from the inner peripheral wall of the support portion 111. The engaging portion 42 is inserted into the limiting groove 1112, and the main sealing portion 41 is pressed between the support portion 111 and the valve component 2. This embodiment can also simplify the assembly of the sealing member 4 and the coil assembly 1. In other embodiments, the engaging portion 42 can also be a pair of symmetrically arranged protruding structures.

[0034] Combination Figure 15-18 , and refer to Figure 2In the fourth embodiment of the present application, the support portion 111 has a limiting groove 1112, the limiting groove 1112 is formed on the outer peripheral wall of the support portion 111, and the limiting groove 1112 is recessed in the radial direction from the outer peripheral wall of the support portion 111. The seal 4 also includes a transition portion 43, the main seal portion 41 and the engaging portion 42 are connected through the transition portion 43, the main seal portion 41, the transition portion 43 and the engaging portion 42 surround a receiving groove 44, and part of the support portion 111 is located in the receiving groove 44. The end of the engaging portion 42 has a hook 421, the end of the engaging portion 42 is inserted into the limiting groove 1112, and the main seal portion 41 is pressed between the inner peripheral wall of the support portion 111 and the valve component 2. This embodiment can also simplify the assembly of the seal 4 and the coil assembly 1. In this embodiment, the support portion 111 can be bent by ultrasonic heat riveting to form a bending portion 1114 to form the limiting groove 1112. This setting can solve the problem of difficult demoulding during injection molding.

[0035] refer to Figure 2-Figure 6 In the embodiment of the present application, the sleeve 21 includes a large diameter portion 211 and a small diameter portion 212, and the large diameter portion 211 is arranged closer to the valve seat assembly 22 than the small diameter portion 212. In the present embodiment, the sleeve 21 is an integral structure, and the large diameter portion 211 is formed by integral stamping. The thickness of the large diameter portion 211 and the small diameter portion 212 are substantially equal. The large diameter portion 211 is expanded by stamping, which can simplify the processing of the sleeve 21. The inner side of the main sealing portion 41 of the sealing member 4 abuts against the outer peripheral wall of the large diameter portion 211, and the main sealing portion 41 is pressed between the support portion 111 and the large diameter portion 211.

[0036] refer to Figure 2-Figure 6In the embodiment of the present application, after the coil assembly 1 and the seal 4 are pre-fixed or pre-limited, the coil assembly 1 and the seal 4 are assembled with the valve component 2 as a whole, and the sleeve 21 needs to extend into the accommodating cavity 13 formed by the coil assembly 1. In this embodiment, the coil assembly 1 and the valve body 3 are clamped and limited by the connecting member 6. In other embodiments, the connecting member 6 can also be screwed to the valve body 3. In this embodiment, the coil assembly 1 also has a cover member 112, and the cover member 112 is located at the upper end of the coil assembly 1. The cover member 112 extends upward from the upper end of the coil assembly 1. The cover member 112 is formed integrally with the shell part 11 or formed separately and then fixedly connected. The cover member 112 forms part of the accommodating cavity 13. Due to the existence of the cover member 112, during the installation of the coil assembly 1 and the valve component 2 of the valve device 100, the sleeve 21 will compress the air in the accommodating cavity 13, resulting in difficulty in assembly. In this embodiment, since the sleeve 21 is provided with a small diameter portion 212 and a large diameter portion 211, and the outer diameter of the large diameter portion 211 is set to be larger than the outer diameter of the small diameter portion 212, when the sleeve 21 is extended into the accommodating chamber 13, the small diameter portion 212 first cooperates with the side wall forming the accommodating chamber 13. In this process, the outer peripheral wall of the small diameter portion 212 does not contact the inner peripheral wall of the sealing member 4, or contacts with a very small mutual friction force. In this process, the sleeve 21 will not compress the air in the accommodating chamber 13 or the degree of compression is very small, and the assembly process becomes easy. In the final stage of the sleeve 21 extending into the accommodating chamber 13, the sealing member 4 will contact the large diameter portion 211 and be pressed between the outer peripheral wall of the coil assembly 1 and the large diameter portion 211, and the sealing member 4 will play a sealing role.

[0037] refer to Figure 2-Figure 6 In the embodiment of the present application, the housing 11 includes a cover member 112, the cover member 112 extends upward from the upper end of the stator assembly 12, a portion of the sleeve 21 is located in the inner cavity formed by the cover member 112, and the cover member 112 has an exhaust hole 1121. The valve device 100 also includes a waterproof breathable membrane 5, which is fixedly connected to the cover member 112, and the waterproof breathable membrane 5 covers the exhaust hole 1121. Specifically, the waterproof breathable membrane 5 is fixed to the inner side of the top of the cover member 112, and the waterproof breathable membrane 5 and the cover member 112 are fixed by pressing, bonding, or welding, and form an annular connection portion, which is arranged around the inner opening of the exhaust hole 1121. The gas in the accommodating cavity 13 can be discharged from the accommodating cavity 13 through the waterproof breathable membrane 5, and the water or water vapor outside the accommodating cavity 13 cannot enter the accommodating cavity 13 through the waterproof breathable membrane 5. This arrangement can also prevent suffocation during assembly, reduce the difficulty of assembling the valve member 2 and the coil assembly 1, and improve the reliability of assembly.

[0038] refer to Figure 2-Figure 6In the embodiment of the present application, the valve device 100 further includes an electric control box 15 and an electric control board 16. The electric control box 15 has a box cavity 151. The electric control board 16 is located in the box cavity 151. At least part of the cover member 112 is located in the box cavity 151. The exhaust hole 1121 connects the accommodating cavity 13 with the box cavity 151. The electric control box 15 further includes a connector 152. The valve device 100 is connected to an external device through the connector 152, such as through a male connector. The connector 152 has a plug-in cavity 1521. The electric control box 15 further includes a second exhaust hole 1522. The second exhaust hole 1522 connects the box cavity 151 with the plug-in cavity 1521. When assembled in this way, the gas in the accommodating cavity 13 can be discharged to the outside of the valve device 100 through the exhaust hole 1121, the box cavity 151, and the second exhaust hole 1522. When the connector 152 is connected to the male plug of the external device, a seal is formed between the connector 152 and the male plug, which can indirectly form a seal on the second exhaust hole 1522. This arrangement can further reduce the difficulty of assembling the valve component 2 and the coil assembly 1 and improve the reliability of assembly.

[0039] It should be noted that the above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. Although the present invention has been described in detail in this specification with reference to the above embodiments, it should be understood by those skilled in the art that the present invention can still be modified or replaced by equivalents, and all technical solutions and improvements thereof that do not depart from the spirit and scope of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A valve device (100), characterized in that: The valve device (100) comprises a coil assembly (1) and a valve component (2), wherein the coil assembly (1) is arranged on the outer periphery of the valve component (2), wherein the coil assembly (1) comprises a shell portion (11), wherein the shell portion (11) comprises a support portion (111), wherein the support portion (111) has a snap-fit ​​receiving portion (1111), and the valve device (100) further comprises a sealing member (4), wherein the sealing member (4) has a main sealing member (41) and a snap-fit ​​providing member (42), wherein the snap-fit ​​providing member (42) is snap-fitted with the snap-fit ​​receiving member (1111), and wherein the main sealing member (41) is pressed by the support portion (111) and the valve component (2).

2. The valve device (100) according to claim 1, characterized in that The coil assembly also includes a stator assembly (12); the shell portion (12) is made of plastic material; the shell portion (11) covers part of the stator assembly (12); or the shell portion (11) and the stator assembly (12) are separate structures; the shell portion (11) and the stator assembly (12) are fixedly connected; the whole or a part of the support portion (111) is a structure extending in the axial direction; the engaging receiving portion (1111) is directly formed by injection molding, or the support portion (111) is pre-injected and then the engaging receiving portion (1111) is machined on the support portion (111).

3. The valve device (100) according to claim 1 or 2, characterized in that: The engaging providing portion (42) is arranged on the outside relative to the main sealing portion (41), the supporting portion (111) has a limiting groove (1112), the wall forming the limiting groove (1112) serves as the engaging providing portion (42), the wall forming the limiting groove (1112) includes a first inner peripheral wall (1113), the engaging providing portion (42) and the first inner peripheral wall (1113) are interference fit, and the main sealing portion (41) is in abutment with the valve component (2).

4. The valve device (100) according to claim 1 or 2, characterized in that: The engagement providing portion (42) of the sealing member (4) comprises a first protruding portion (421) and a second protruding portion (422), wherein the first protruding portion (421) and the second protruding portion (422) protrude radially outward from the main sealing portion (41), and the supporting portion (111) comprises a first notch portion (111a) and a second notch portion (111b), wherein the first protruding portion (421) is engaged with the first notch portion (111a) by interference fit, and the second protruding portion (422) is engaged with the second notch portion (111b) by interference fit, and the main sealing portion (41) is pressed by the supporting portion (111) and the valve component (2).

5. The valve device (100) according to claim 1 or 2, characterized in that: The engaging portion (42) is protruded and extended radially outward from the main sealing portion (41); the engaging portion (42) is roughly annular; the supporting portion (111) has a limiting groove (1112); the limiting groove (1112) is formed on the inner peripheral wall of the supporting portion (111); the limiting groove (1112) is recessed in the radial direction from the inner peripheral wall of the supporting portion (111); the engaging portion (42) is inserted into the limiting groove (1112), and the main sealing portion (41) is pressed tightly by the supporting portion (111) and the valve component (2).

6. The valve device (100) according to claim 1 or 2, characterized in that: The support portion (111) has a limiting groove (1112), and the limiting groove (1112) is formed on the outer peripheral wall of the support portion (111). The limiting groove (1112) is recessed in the radial direction from the outer peripheral wall of the support portion (111). The sealing member (4) also includes a transition portion (43). The main sealing portion (41) is connected to the engaging portion (42) through the transition portion (43). The main sealing portion (41), the transition portion (43) and the engaging portion (42) form a receiving groove (44). Part of the support portion (111) is located in the receiving groove (44). The end of the engaging portion (42) is engaged with the limiting groove (1112). The main sealing portion (41) is pressed by the inner peripheral wall of the support portion (111) and the valve component (2).

7. The valve device (100) according to any one of claims 3 to 6, characterized in that: The valve component (2) comprises a sleeve (21) and a valve seat assembly (22); the valve component (2) is fixedly connected to the sleeve (21); a sealing arrangement is provided at the connection between the two; and the main sealing portion (41) abuts against the sleeve (21) or the valve seat assembly (22).

8. The valve device (100) according to claim 7, characterized in that The sleeve (21) includes a large diameter portion (211) and a small diameter portion (212), the large diameter portion (211) is closer to the valve seat assembly (22) than the small diameter portion (212), the inner side portion of the main sealing portion (41) abuts against the outer peripheral wall of the large diameter portion (211), and the main sealing portion (41) is pressed by the support portion (111) and the large diameter portion (211).

9. The valve device (100) according to claim 7 or 8, characterized in that: The valve component (2) further comprises a rotor assembly (23), wherein the rotor assembly (23) is located in an inner cavity formed by the sleeve (21); the outer shell (11) comprises a cover component (112), wherein the cover component (112) is extended upward from an upper end portion of the stator component (12), wherein a portion of the sleeve (21) is located in the inner cavity formed by the cover component (112), and wherein the cover component (112) has an exhaust hole (1121); the valve device (100) further comprises a waterproof and breathable membrane (5), wherein the waterproof and breathable membrane (5) is fixedly connected to the cover component (112), and wherein the waterproof and breathable membrane (5) covers the exhaust hole (1121).

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