Valve device

Abstract

The valve device comprises the sleeve, the sleeve comprises the small-diameter section and the large-diameter part, the large-diameter part is closer to the valve seat component relative to the small-diameter part, the valve device further comprises the sealing piece, the sealing piece is located between the coil assembly and the large-diameter part, and therefore the problem that the coil assembly and the valve component are difficult to assemble can be solved.

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. The coil assembly has a receiving cavity. The valve component has a sleeve, at least part of the sleeve is located in the receiving cavity, and the coil assembly is sleeved on the outer periphery of the sleeve. A seal is provided between the coil assembly and the sleeve to prevent external gas or liquid from entering the gap between the coil assembly and the sleeve and causing adverse effects on the valve device. However, due to the presence of the seal, the air in the receiving cavity is compressed when the coil assembly and the valve component are assembled, making assembly difficult. Therefore, how to solve the problem of difficult assembly of the coil assembly and the valve component is a technical problem that technicians in this field need to consider. Summary of the invention

[0003] The purpose of the present application is to provide a valve device, which is helpful to solve the problem of difficult assembly of coil components and valve parts.

[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 has a accommodating cavity, the valve component has a sleeve and a valve seat component, at least part of the sleeve is located in the accommodating cavity, the coil assembly is sleeved on the outer circumference of the sleeve, the sleeve includes a small diameter section and a large diameter portion, the large diameter portion is closer to the valve seat component than the small diameter portion, the valve device also includes a sealing member, and the sealing member is located between the coil assembly and the large diameter portion.

[0006] An embodiment of the present application provides a valve device, including a sleeve, the sleeve including a small diameter section and a large diameter portion, the large diameter portion is closer to the valve seat component than the small diameter portion, the valve device also includes a seal, the seal is located between the coil assembly and the large diameter portion, such an arrangement is conducive to solving the problem of difficult assembly of the coil assembly and the valve component. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 It is a front view structural schematic diagram of a first implementation mode of the 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 combined structure of the coil assembly and the seal;

[0011] Figure 5 yes Figure 2 A schematic diagram of the front view structure of the middle valve component from one perspective;

[0012] Figure 6 yes Figure 5 Schematic diagram of the cross-sectional structure of the middle valve component along the BB plane;

[0013] Figure 7 yes Figure 6 A schematic cross-sectional view of the structure of the middle sleeve;

[0014] Figure 8 is a front view structural schematic diagram of a second implementation manner of the first embodiment of the valve device provided by the present application from one viewing angle;

[0015] Fig. 9 yes Figure 8 Schematic diagram of the cross-sectional structure of the middle valve device along the CC plane;

[0016] Fig.10 yes Fig. 9 A schematic diagram of the enlarged structure of the middle B part;

[0017] Fig.11 yes Fig. 9 A schematic cross-sectional view of the combined structure of the coil assembly and the seal;

[0018] Fig.12 yes Figure 8 A schematic cross-sectional view of the middle valve component from one perspective;

[0019] Fig.13 is a front view structural schematic diagram of a first implementation manner of the second embodiment of the valve device provided by the present application from one viewing angle;

[0020] Fig.14 yes Fig.13 Schematic diagram of the cross-sectional structure of the middle valve device along the DD plane;

[0021] Fig.15 yes Fig.14 The enlarged structural diagram of the middle C part;

[0022] Fig.16 yes Fig.14 A schematic cross-sectional view of the combined structure of the coil assembly and the seal;

[0023] Fig.17 yes Fig.14 A schematic diagram of the front view structure of the middle valve component from one perspective;

[0024] Fig.18 yes Fig.17 Schematic diagram of the cross-sectional structure of the middle valve component along the EE plane;

[0025] Fig.19 is a front view structural schematic diagram of a second implementation manner of the second embodiment of the valve device provided by the present application from one viewing angle;

[0026] Fig. 20 yes Fig.19 Schematic diagram of the cross-sectional structure of the middle valve device along the FF plane;

[0027] Fig.21 yes Fig. 20 The enlarged structural diagram of the middle D part;

[0028] Fig. 22 yes Fig. 20 A schematic cross-sectional view of the combined structure of the coil assembly and the seal;

[0029] Fig.23 yes Fig. 20 A schematic cross-sectional view of the middle valve component from one perspective;

[0030] Fig.24 is a front view structural schematic diagram of a first implementation manner of the third embodiment of the valve device provided by the present application from one viewing angle;

[0031] Fig.25 yes Fig.24 Schematic diagram of the cross-sectional structure of the middle valve device along the GG plane;

[0032] Fig.26 yes Fig.25 A schematic cross-sectional view of the combined structure of the coil assembly and the seal;

[0033] Fig. 27 yes Fig.26 A schematic diagram of a top view of the central coil assembly without the protective cover;

[0034] Fig.28 is a schematic cross-sectional structural diagram of a second implementation manner of the third embodiment of the valve device provided in the present application from one viewing angle;

[0035] Fig.29 is a schematic cross-sectional structural diagram of a fifth implementation manner of the third embodiment of the valve device provided in the present application from one viewing angle;

[0036] Fig.30 It is a schematic cross-sectional structure diagram from one perspective of the sixth implementation manner of the third embodiment of the valve device provided in the present application. DETAILED DESCRIPTION

[0037] 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.

[0038] 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 an element with both throttling and switching functions. This application is described with the valve device 100 as a throttling element.

[0039] 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 component 22. The coil assembly 1 has a accommodating cavity 11, at least part of the sleeve 21 is located in the accommodating cavity 11 of the coil assembly 1, and the coil assembly 1 is sleeved on the outer periphery of the sleeve 21. The valve body 3 has a valve body cavity 31, at least part of the valve seat component 22 is located in the valve body cavity 31 of the valve body 3. The valve body 3 can be a separate valve block, or 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. The present application is described by taking the valve body 3 as a separate valve block as an example.

[0040] The coil assembly 1 includes a stator assembly 12 and an injection molding part 13, wherein the injection molding part 13 covers at least a part of the stator assembly 12, and the stator assembly 12 is located on the outside of the sleeve 21. The valve component 2 also includes a rotor assembly 23, and the rotor assembly 23 is located on the inside of the sleeve 21. The valve component 2 also includes a screw valve core assembly 24 and a nut assembly 25, wherein 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, and a predetermined current is passed through the stator assembly 12 to generate an excitation magnetic field, which drives the rotor assembly 23 to rotate, and the rotor assembly 23 can drive the screw valve core assembly 24 to rotate, and the screw valve core assembly 24 can move relative to the upper and lower axes of the valve port 222 arranged on the valve seat component 22, and the valve core part 241 arranged on the screw valve core assembly 24 cooperates with the valve port 222 to adjust the flow area of ​​the valve port 222, thereby adjusting the flow rate of the refrigerant in the cooling system.

[0041] Combination Figure 1-Figure 12In the first embodiment of the present application, the sleeve 21 includes a small diameter portion 211 and a large diameter portion 212, the outer diameter of the large diameter portion 212 is larger than the outer diameter of the small diameter portion 211, and the large diameter portion 212 is closer to the valve seat component 22 than the small diameter portion 211. The valve device 100 also includes a seal 4, which is located between the coil assembly 1 and the large diameter portion 212. The seal 4 is generally annular and includes a seal made of materials such as rubber or polytetrafluoroethylene. In this embodiment, the sleeve 21 is an integral structure, and the large diameter portion 212 is formed by integral stamping. The thickness of the large diameter portion 212 and the small diameter portion 211 are approximately equal. The large diameter portion 212 is expanded by stamping, which simplifies the processing and forming of the sleeve 21. In other embodiments, the large diameter portion 212 and the small diameter portion 211 can also be formed separately and then fixedly connected by welding or the like. It is also possible to make the thickness of the large diameter portion 212 greater than the thickness of the small diameter portion 211, so as to obtain a structure in which the outer diameter of the large diameter portion 212 is greater than the outer diameter of the small diameter portion 211.

[0042] In this embodiment, the seal 4 and the coil assembly 1 are pre-fixed or pre-limited, which can reduce the number of parts during transportation. The seal 4 and the coil assembly 1 can be transported as a part, and do not need to be transported separately. It is also beneficial to assemble the seal 4 and the coil assembly 1 as a part, reducing the assembly process. For the way of pre-fixing or pre-limiting the seal 4 and the coil assembly 1, this embodiment lists two implementation methods, which will be described in detail below.

[0043] Combination Figure 1-Figure 7 In the first embodiment, the coil assembly 1 includes an injection molding part 13, and the injection molding part 13 includes a main body part 131 and an extension part 132. The extension part 132 extends from the main body part 131 in a direction away from the main body part 131. The extension part 132 has a limiting protrusion 1321, and the limiting protrusion 1321 extends toward the sleeve 21. The inner diameter of the limiting protrusion 1321 is larger than the outer diameter of the maximum outer diameter of the seal 4. The maximum outer diameter of the seal 4 is located above the limiting protrusion 1321, and the seal 4 is pressed between the extension part 132 and the large diameter part 212. In this embodiment, the seal 4 is a special-shaped seal 4, and the cross section of the seal 4 is roughly cross-shaped. The seal 4 has radial protrusions inside and outside in the radial direction. In other embodiments, the seal 4 can also be a seal 4 with a cross section that is roughly elliptical or circular.

[0044] Combination Figure 8-Figure 12In the second embodiment, the coil assembly 1 includes an injection molding part 13 and a connecting plate 14, the connecting plate 14 is fixedly connected to the injection molding part 13, the seal 4 is supported by the connecting plate 14, the injection molding part 13 has a receiving groove 133 capable of receiving the seal 4, and the seal 4 is pressed between the large diameter part 212 and the side wall forming the receiving groove 133. In this embodiment, the lower end of the injection molding part 13 has a connecting column 134, the connecting plate 14 has a through hole, the connecting column 134 passes through the through hole, and the connecting column 134 is melted away from the end of the main body 131 of the injection molding part 13, so that the connecting plate 14 is fixedly connected to the injection molding part 13, and the melting method includes ultrasonic heat riveting and the like.

[0045] Combination Figure 1-Figure 12 According to the first embodiment of the valve device, 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 11 formed by the coil assembly 1. In this embodiment, the coil assembly 1 also has a cover component 135, and the cover component 135 is located at the upper end of the coil assembly 1. The cover component 135 is extended upward from the upper end of the coil assembly 1. The cover component 135 and the main body 131 of the injection molding part 13 are integrally formed or separately formed and then fixedly connected. The cover component 135 forms part of the accommodating cavity 11. Due to the existence of the cover component 135, in the valve device 100 in the background technology, during the installation of the coil assembly 1 and the valve component 2, the sleeve 21 will compress the air in the accommodating cavity 11, resulting in difficulties in assembly. In this embodiment, since the sleeve 21 is provided with a small diameter portion 211 and a large diameter portion 212, and the outer diameter of the large diameter portion 212 is set to be larger than the outer diameter of the small diameter portion 211, when the sleeve 21 is inserted into the accommodating chamber 11, the small diameter portion 211 first cooperates with the side wall forming the accommodating chamber 11. In this process, the outer peripheral wall of the small diameter portion 211 does not contact the inner peripheral wall of the sealing member 4, or contacts with a small friction force between them. In this process, the sleeve 21 does not compress the air in the accommodating chamber 11 or the degree of compression is very small, and the assembly process becomes easy. In the final stage of the sleeve 21 being inserted into the accommodating chamber 11, the sealing member 4 contacts the large diameter portion 212 and is pressed between the outer peripheral wall of the coil assembly 1 and the large diameter portion 212. The sealing member 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 has an adverse effect on the valve device 100, such as corrosion of the stator claw pole of the stator assembly 12. According to the arrangement of this embodiment, even if the cover component 135 does not have an exhaust hole, the difficulty of assembling the valve component 2 and the coil assembly 1 can be greatly reduced.

[0046] refer to Figure 1-Figure 12Further, in the third implementation of the present embodiment, the first implementation or the second implementation is further optimized, and the cover component 135 has an exhaust hole 1351. The valve device 100 also 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 component 135 is located in the box cavity 151. The exhaust hole 1351 connects the accommodating cavity 11 with the box cavity 151. The electric control box 15 also 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 also 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 11 can be discharged to the outside of the valve device 100 through the exhaust hole 1351, 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.

[0047] refer to Figure 1-Figure 12 In the fourth implementation of the present embodiment, the first implementation, the second implementation or the third implementation is further optimized, and the cover component 135 has an exhaust hole 1351. The valve device 100 also includes a waterproof breathable membrane 5, which is fixedly connected to the cover component 135, and the waterproof breathable membrane 5 covers the exhaust hole 1351. The waterproof breathable membrane 5 is located inside the cover component 135, and the cover component 135 also has a protective structure 51, which is located outside the exhaust hole 1351. The protective structure 51 has a connecting hole 511, and the connecting hole 511 connects the exhaust hole 1351 with the space outside the protective structure 51. The waterproof breathable membrane 5 and the cover component 135 are fixed by pressing, bonding or welding, and form an annular connection part, which is arranged around the inner opening of the exhaust hole 1351, and the gas in the accommodating cavity 11 can be discharged from the accommodating cavity 11 through the waterproof breathable membrane 5, and the water or water vapor outside the accommodating cavity 11 cannot enter the accommodating cavity 11 through the waterproof breathable membrane 5. Such an arrangement can also further reduce the difficulty of assembling the valve component 2 and the coil assembly 1 and improve the reliability of the assembly.

[0048] In this embodiment, there are multiple ways to connect the sleeve 21 and the valve seat component 22, one of which is as follows: Fig.12 For example, the valve seat component 22 has a connecting portion 221, part of the connecting portion 221 is located in the cavity formed by the sleeve 21, and the sleeve 21 abuts against and is fixedly connected to the step formed by the connecting portion 221. Alternatively, the sleeve 21 directly abuts against and is fixedly connected to the top of the connecting portion 221. Figure 6For example, in another embodiment, the valve seat component 22 includes a connecting portion 221 and a supporting portion 223, wherein the connecting portion 221 is protruded from the upper end surface of the supporting portion 223, and the sleeve 21 is sleeved on the connecting portion 221, and the connecting portion 221 provides an installation guide for the sleeve 21, and the lower end of the sleeve 21 abuts against the supporting portion 223 and is fixedly connected. In another embodiment, the nut assembly 25 has a nut connecting plate, and the nut assembly 25 is fixedly connected to the valve seat component 22 through the nut connecting plate, and the sleeve 21 is fixedly connected to the nut connecting plate. The fixed connection method in this paragraph is welding, and in other embodiments, it can also be riveting, threaded connection, and other connection methods.

[0049] In this embodiment, the valve component 2 is firstly connected with the valve body 3 by thread. Of course, there are other connection methods, such as connection by independent threaded parts, etc., and the coil assembly 1 is then fixedly connected with the valve body 3. Figure 1 As shown, the connecting plate 14 has a buckle 17, and the fixing connection mode is to fix by the buckle 17, and the buckle 17 is detachably connected to the valve body 3. Of course, it can also be as shown in FIG. Figure 8 As shown, the connecting plate 14 is fixed to the valve body 3 by screws or the like.

[0050] refer to Fig.30 In another embodiment, the coil assembly 1 is first fixedly connected to the valve component 2. In this embodiment, the connecting plate 14 of the coil assembly 1 includes an extension sleeve 141, which is sleeved on the valve component 2 and fixed by welding to the valve component 2. The coil assembly 1 and the valve component 2 are fixedly connected to the valve body 3 as a whole. The connection method includes fixing the valve body 3 by the fastener 17 on the connecting plate 14, the fastener 17 and the valve body 3 are detachably connected, or the connecting plate 14 is screwed to the valve body 3.

[0051] Combination Figure 13-Figure 23 In the second embodiment of the present application, the valve seat component 22 has a connecting portion 221, the lower end of the sleeve 21 is fixedly connected to the connecting portion 221, the outer diameter of the connecting portion 221 is larger than the outer diameter of the sleeve 21, and the valve device 100 also includes a sealing member 4, which is located between the coil assembly 1 and the connecting portion 221. It should be noted that in this embodiment, the outer diameter of the connecting portion 221 is larger than the outer diameter of the sleeve 21, which means that the outer diameter of the connecting portion 221 at the position where the sealing member 4 cooperates is larger than the outer diameter of the sleeve 21. The sealing member 4 is roughly annular and includes a sealing member made of materials such as rubber or polytetrafluoroethylene. In this embodiment, the connecting portion 221 forms a step portion 223, the lower end of the sleeve 21 abuts against the step portion 223 and is fixedly connected, and the connection method includes welding. In another embodiment, the lower end of the sleeve 21 abuts against the plane formed by the upper end of the connecting portion 221 and is fixedly connected, and the connection method includes welding. A chamfer is also formed at the outer edge of the connecting portion 221 to prevent the sealing member 4 from being scratched.

[0052] Combination Figure 13-Figure 23 In this embodiment, the seal 4 and the coil assembly 1 are pre-fixed or pre-limited, which can reduce the number of parts during transportation. The seal 4 and the coil assembly 1 can be transported as a part, and do not need to be transported separately. It is also beneficial to assemble the seal 4 and the coil assembly 1 as a part, reducing the assembly process. For the way of pre-fixing or pre-limiting the seal 4 and the coil assembly 1, this embodiment lists two implementation methods, which will be described in detail below.

[0053] Combination Figure 13-Figure 18 In the first embodiment, the coil assembly 1 includes an injection molding part 13, and the injection molding part 13 includes a main body part 131 and an extension part 132. The extension part 132 extends from the main body part 131 in a direction away from the main body part 131. The extension part 132 has a limiting protrusion 1321, and the limiting protrusion 1321 extends toward the sleeve 21. The inner diameter of the limiting protrusion 1321 is larger than the outer diameter of the maximum outer diameter of the seal 4. The maximum outer diameter of the seal 4 is located above the limiting protrusion 1321, and the seal 4 is pressed between the extension part 132 and the connecting part 221. In this embodiment, the seal 4 is a special-shaped seal 4, and the cross section of the seal 4 is roughly cross-shaped. The seal 4 has radial protrusions inside and outside in the radial direction. In other embodiments, the seal 4 can also be a seal 4 with a cross section that is roughly elliptical or circular.

[0054] Combination Figure 19-Figure 23 In the second embodiment, the coil assembly 1 includes an injection molding part 13 and a connecting plate 14, the connecting plate 14 is fixedly connected to the injection molding part 13, the seal 4 is supported by the connecting plate 14, the injection molding part 13 has a receiving groove 133 capable of receiving the seal 4, and the seal 4 is pressed between the connecting part and the side wall forming the receiving groove 133. In this embodiment, the lower end of the injection molding part 13 has a connecting column 134, the connecting plate 14 has a through hole, the connecting column 134 passes through the through hole, and the connecting column 134 is melted away from the end of the main body 131 of the injection molding part 13, so that the connecting plate 14 is fixedly connected to the injection molding part 13, and the melting method includes ultrasonic heat riveting and the like.

[0055] Combination Figure 13-Figure 23According to the second embodiment of the valve device, 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 11 formed by the coil assembly 1. In this embodiment, the coil assembly 1 also has a cover component 135, and the cover component 135 is located at the upper end of the coil assembly 1. The cover component 135 is extended upward from the upper end of the coil assembly 1. The cover component 135 and the main body 131 of the injection molding part 13 are integrally formed or separately formed and then fixedly connected. The cover component 135 forms part of the accommodating cavity 11. Due to the existence of the cover component 135, the sleeve 21 will compress the air in the accommodating cavity 11 during the installation of the coil assembly 1 and the valve component 2 in the valve device 100 in the background technology, resulting in difficulties in assembly. In this embodiment, since the lower end of the sleeve 21 is connected to the connecting portion 221, and the outer diameter of the connecting portion 221 is larger than the outer diameter of the sleeve 21, when the valve component 2 is extended into the accommodating chamber 11, the sleeve 21 first cooperates with the side wall forming the accommodating chamber 11. In this process, the outer peripheral wall of the sleeve 21 does not contact the inner peripheral wall of the sealing member 4, or contacts with a very small friction force between them. In this process, the sleeve 21 does not compress the air in the accommodating chamber 11 or the degree of compression is very small, and the assembly process becomes easy. In the final stage of the valve component 2 extending into the accommodating chamber 11, the sealing member 4 contacts the connecting portion 221 and is pressed between the coil assembly 1 and the outer peripheral wall of the connecting portion 221. The sealing member 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 has an adverse effect on the valve device 100, such as corrosion of the stator claw pole of the stator assembly 12. According to the arrangement of this embodiment, even if the cover component 135 does not have the exhaust hole 1351 , the difficulty of assembling the valve component 2 and the coil assembly 1 can be greatly reduced.

[0056] refer to Figure 13-Figure 23Further, in the third implementation of the present embodiment, the first implementation or the second implementation is further optimized, and the cover component 135 has an exhaust hole 1351. The valve device 100 also 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 component 135 is located in the box cavity 151. The exhaust hole 1351 connects the accommodating cavity 11 with the box cavity 151. The electric control box 15 also 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 also 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 11 can be discharged to the outside of the valve device 100 through the exhaust hole 1351, 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.

[0057] refer to Figure 24-Figure 27 In the fourth implementation of the present embodiment, the first implementation, the second implementation or the third implementation is further optimized, and the cover component 135 has an exhaust hole 1351. The valve device 100 also includes a waterproof breathable membrane 5, which is fixedly connected to the cover component 135, and the waterproof breathable membrane 5 covers the exhaust hole 1351. The waterproof breathable membrane 5 is located inside the cover component 135, and the cover component 135 also has a protective structure 51, which is located outside the exhaust hole 1351. The protective structure 51 has a connecting hole 511, and the connecting hole 511 connects the exhaust hole 1351 with the space outside the protective structure 51. The waterproof breathable membrane 5 and the cover component 135 are fixed by pressing, bonding or welding, and form an annular connection part, which is arranged around the inner opening of the exhaust hole 1351, and the gas in the accommodating cavity 11 can be discharged from the accommodating cavity 11 through the waterproof breathable membrane 5, and the water or water vapor outside the accommodating cavity 11 cannot enter the accommodating cavity 11 through the waterproof breathable membrane 5. Such an arrangement can also further reduce the difficulty of assembling the valve component 2 and the coil assembly 1 and improve the reliability of the assembly.

[0058] In this embodiment, the valve component 2 is firstly connected with the valve body 3 by thread. Of course, there are other connection methods, such as connection by independent threaded parts, etc., and the coil assembly 1 is then fixedly connected with the valve body 3. Fig.13 As shown, in this embodiment, the connecting plate 14 has a buckle 17, and the fixing connection method is to fix by the buckle 17, and the buckle 17 is detachably connected to the valve body 3. Of course, it can also be as follows Fig.19As shown, the connecting plate 14 is fixed to the valve body 3 by screws or the like.

[0059] refer to Fig.30 In another embodiment, the coil assembly 1 is first fixedly connected to the valve component 2. In this embodiment, the connecting plate 14 of the coil assembly 1 includes an extension sleeve 141, which is sleeved on the valve component 2 and fixed by welding to the valve component 2. The coil assembly 1 and the valve component 2 are fixedly connected to the valve body 3 as a whole. The connection method includes fixing the valve body 3 by the fastener 17 on the connecting plate 14, the fastener 17 and the valve body 3 are detachably connected, or the connecting plate 14 is screwed to the valve body 3.

[0060] Combination Figure 24-Figure 30 In the third embodiment of the present application, the valve device 100 also includes a sealing member 4, which is located between the coil assembly 1 and the valve component 2. The coil assembly 1 includes a cover component 135, and the cover component 135 has an exhaust hole 1351. The coil assembly 1 also includes a waterproof and breathable membrane 5, which is fixedly connected to the cover component 135, and the waterproof and breathable membrane 5 covers the exhaust hole 1351.

[0061] The cover member 135 extends upward from the upper end of the coil assembly 1, and the cover member 135 forms a part of the accommodating cavity 11. The cover member 135 includes a barrel portion 1352 and a top cover portion 1353. The exhaust hole 1351 is located at the top cover portion 1353, and the waterproof breathable membrane 5 is located at the lower end surface of the top cover portion 1353. Of course, in other embodiments, the exhaust hole 1351 can be located at the barrel portion 1352, and accordingly, the waterproof breathable membrane 5 is fixed to the barrel portion 1352.

[0062] In this embodiment, the waterproof breathable membrane 5 and the cover member 135 are fixed by pressing to form an annular connection portion. Of course, in other embodiments, they can also be fixed by bonding or welding. The annular connection portion is arranged around the inner opening of the exhaust hole 1351, and the gas in the accommodating cavity 11 can be discharged from the accommodating cavity 11 through the waterproof breathable membrane 5, and the water or water vapor outside the accommodating cavity 11 cannot enter the accommodating cavity 11 through the waterproof breathable membrane 5.

[0063] 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 as a whole with the valve component 2, and the sleeve 21 needs to extend into the accommodating cavity 11 formed by the coil assembly 1. In this embodiment, the cover component 135 is located at the upper end of the coil assembly 1, and the cover component 135 is extended upward from the upper end of the coil assembly 1. The cover component 135 and the main body 131 of the injection molding part 13 are integrally formed or separately formed and then fixedly connected. The cover component 135 forms part of the accommodating cavity 11. Due to the presence of the cover component 135, the sleeve 21 will compress the air in the accommodating cavity 11 during the installation of the coil assembly 1 and the valve component 2 in the valve device 100 in the background technology, resulting in assembly difficulties. In this embodiment, the presence of the exhaust hole 1351 and the waterproof breathable membrane 5 allows the air in the accommodating cavity 11 to be discharged from the accommodating cavity 11 through the waterproof breathable membrane 5, reducing the difficulty of assembling the valve component 2 and the coil assembly 1.

[0064] Combination Figure 24-Figure 27 In the first implementation mode of the present embodiment, the coil assembly 1 further comprises a protection structure 51, the protection structure 51 is located on the upper end surface of the top cover 1353, the protection structure 51 covers the opening of the exhaust hole 1351 located on the top cover 1353, and the protection structure 51 has a connecting hole 511, and the connecting hole 511 connects the exhaust hole 1351 with the outside of the protection structure 51. The protection structure 51 comprises a peripheral wall portion 512 and a cover plate 513; the peripheral wall portion 512 and the cover plate 513 are integrally formed, and are fixedly connected to the top cover 1353 through the peripheral wall portion 512, and the opening of the connecting hole 511 is located in the peripheral wall portion 512; or, the peripheral wall portion 512 and the top cover 1353 are integrally formed, the cover plate 513 and the peripheral wall portion 512 are separately formed and fixedly connected, and the opening of the connecting hole 511 is located in the peripheral wall portion 512. The number of the connecting holes 511 is one or more, and the protection structure 51 further includes a plurality of spaced-apart protruding columns 514 , which are located between the exhaust holes 1351 and the peripheral wall portion 512 . In the radial direction, the protruding columns 514 are arranged opposite to the connecting holes 511 .

[0065] In this embodiment, the seal 4 and the coil assembly 1 are pre-fixed or pre-limited, which can reduce the number of parts during transportation. The seal 4 and the coil assembly 1 can be transported as a part, and do not need to be transported separately. It is also beneficial to assemble the seal 4 and the coil assembly 1 as a part, reducing the assembly process. The seal 4 is roughly annular, including a seal made of materials such as rubber or polytetrafluoroethylene. For the way of pre-fixing or pre-limiting the seal 4 and the coil assembly 1, this embodiment lists two implementation methods, which will be described in detail below.

[0066] refer to Fig.28Based on the first embodiment, in the second embodiment of the present embodiment, the coil assembly 1 includes an injection molding part 13 and a connecting plate 14, the connecting plate 14 is fixedly connected to the injection molding part 13, the seal 4 is supported by the connecting plate 14, the injection molding part 13 has a receiving groove 133 capable of receiving the seal 4, and the seal 4 is pressed between the large diameter part 212 and the side wall forming the receiving groove 133. In this embodiment, the lower end of the injection molding part 13 has a connecting column 134, the connecting plate 14 has a through hole, the connecting column 134 passes through the through hole, and the connecting column 134 is melted away from the end of the main body 131 of the injection molding part 13, so that the connecting plate 14 is fixedly connected to the injection molding part 13, and the melting method includes ultrasonic heat riveting and the like.

[0067] refer to Figure 2-Figure 3 Based on the first embodiment, in the third embodiment of the present embodiment, the coil assembly 1 includes an injection molding part 13, the injection molding part 13 includes a main body part 131 and an extension part 132, the extension part 132 extends from the main body part 131 in a direction away from the main body part 131, the extension part 132 has a limiting protrusion 1321, the limiting protrusion 1321 extends toward the sleeve 21, the inner diameter of the limiting protrusion 1321 is larger than the outer diameter of the maximum outer diameter of the seal 4, the maximum outer diameter of the seal 4 is located above the limiting protrusion 1321, and the seal 4 is pressed between the extension part 132 and the large diameter part 212. In the present application, the seal 4 is a special-shaped seal 4, the cross section of the seal 4 is roughly cross-shaped, and the seal 4 has radial protrusions inside and outside in the radial direction. In other embodiments, the seal 4 can also be a seal 4 with a cross section that is roughly elliptical or circular.

[0068] refer to Fig.28 Based on the second embodiment or the third embodiment, further, in the fourth embodiment, the sleeve 21 includes a small diameter portion 211 and a large diameter portion 212, the large diameter portion 212 is closer to the valve seat component 22 than the small diameter portion 211, and the valve device 100 also includes a seal 4, and the seal 4 is located between the coil assembly 1 and the large diameter portion 212. 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. Since the sleeve 21 is provided with the small diameter portion 211 and the large diameter portion 212, and the outer diameter of the large diameter portion 212 is set to be larger than the outer diameter of the small diameter portion 211, during the assembly process, the sleeve 21 will not compress the air in the accommodating chamber 11 or the degree of compression is very small, and the assembly process becomes easy.

[0069] refer to Fig.29Based on the second embodiment or the third embodiment, further, in the fifth embodiment, the valve seat component 22 has a connecting portion 221, the lower end of the sleeve 21 is fixedly connected to the connecting portion 221, the outer diameter of the connecting portion 221 is larger than the outer diameter of the sleeve 21, and the valve device 100 further includes a sealing member 4, and the sealing member 4 is located between the coil assembly 1 and the connecting portion 221. The sealing member 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 may have an adverse effect on the valve device 100, such as corrosion of the stator claw pole of the stator assembly 12. Since the lower end of the sleeve 21 is connected to the connecting portion 221, and the outer diameter of the connecting portion 221 is larger than the outer diameter of the sleeve 21, during the assembly process, the sleeve 21 will not compress the air in the accommodating chamber 11 or the degree of compression is very small, and the assembly process becomes easy.

[0070] In this embodiment, it may further include an electric control box 15 and an electric control board 16, and corresponding second exhaust holes 1522. The relevant structure can refer to the first and second embodiments of the valve device 100, and will not be described in detail here.

[0071] In this embodiment, the valve component 2 is firstly connected with the valve body 3 by thread. Of course, there are other connection methods, such as connection by independent threaded parts, etc., and the coil assembly 1 is then fixedly connected with the valve body 3. Fig.24 As shown, in this embodiment, the connecting plate 14 has a buckle 17, and the fixing connection method is to fix by the buckle 17, and the buckle 17 and the valve body 3 are detachably connected. Of course, the connecting plate 14 and the valve body 3 can also be fixed by screw connection or other methods.

[0072] refer to Fig.30 In another embodiment, the coil assembly 1 is first fixedly connected to the valve component 2. In this embodiment, the connecting plate 14 of the coil assembly 1 includes an extension sleeve 141, which is sleeved on the valve component 2 and fixedly welded to the valve component 2, specifically, fixedly welded to the connecting portion 221. The coil assembly 1 and the valve component 2 are fixedly connected to the valve body 3 as a whole, and the connection method includes fixing the valve body 3 with the clip 17 on the connecting plate 14, the clip 17 and the valve body 3 are detachably connected, or the connecting plate 14 is screwed to the valve body 3, etc.

[0073] In the present application, the first, second and third embodiments of the valve device 100 are described in detail. The above three embodiments can refer to each other. According to the above introduction, it can be foreseen that these three embodiments can be further combined with each other to obtain other embodiments, which are not listed one by one here.

[0074] 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, characterized in that: The valve device includes a coil assembly and a valve component. The coil assembly has a accommodating cavity. The valve component has a sleeve and a valve seat component. At least a portion of the sleeve is located in the accommodating cavity. The coil assembly is sleeved on the outer circumference of the sleeve. The sleeve includes a small diameter section and a large diameter section. The large diameter section is closer to the valve seat component than the small diameter section. The valve device also includes a sealing member, which is located between the coil assembly and the large diameter section.

2. The valve device according to claim 1, characterized in that The coil assembly includes an injection molding portion, which includes a main body portion and an extension portion, wherein the extension portion extends from the main body portion in a direction away from the main body portion, and the extension portion has a limiting protrusion, which extends toward the sleeve, and the inner diameter of the limiting protrusion is larger than the outer diameter of the seal at its maximum outer diameter, and the maximum outer diameter of the seal is located above the limiting protrusion, and the seal is pressed between the extension portion and the large diameter portion.

3. The valve device according to claim 1, characterized in that The coil assembly includes an injection molding part and a connecting plate, wherein the connecting plate is fixedly connected to the injection molding part, the sealing member is supported by the connecting plate, the injection molding part has a receiving groove capable of receiving the sealing member, and the sealing member is pressed between the large diameter part and the side wall forming the receiving groove.

4. The valve device according to claim 2 or 3, characterized in that: The valve seat component has a connecting portion, and the sleeve is fixedly connected to the connecting portion; or, the valve seat component has a connecting portion and a supporting portion, the sleeve is sleeved on the connecting portion, and the sleeve is fixedly connected to the connecting portion; or, the valve component further includes a nut assembly, the nut assembly has a nut connecting plate, the nut assembly is fixedly connected to the valve seat component via the nut connecting plate, and the sleeve is fixedly connected to the nut connecting plate.

5. The valve device according to any one of claims 2 to 4, characterized in that: The coil assembly further includes a cover component, which is extended upward from the upper end of the coil assembly, forms a portion of the accommodating cavity, and has an exhaust hole.

6. The valve device according to claim 5, characterized in that The valve device also includes an electric control box and an electric control board. The electric control box has a box cavity. The electric control board is located in the box cavity. At least part of the cover component is located in the box cavity. The exhaust hole connects the accommodating cavity and the box cavity. The electric control box also includes a connector. The connector has a plug-in cavity. The electric control box also includes a second exhaust hole, which connects the box cavity and the plug-in cavity.

7. The valve device according to claim 5 or 6, characterized in that: The valve device further comprises a waterproof and breathable membrane, wherein the waterproof and breathable membrane is fixedly connected to the cover component and covers the exhaust hole.

8. The valve device according to claim 7, characterized in that The waterproof breathable membrane is located inside the cover component. The cover component also has a protection structure. The protection structure is located outside the exhaust hole. The protection structure has a connecting hole. The connecting hole connects the exhaust hole with the space outside the protection structure.

9. The valve device according to claim 5, characterized in that The sleeve is an integral structure, and the large diameter portion is formed by integral stamping.

10. The valve device according to claim 9, characterized in that The valve device also includes a valve body, which has a valve body cavity, and at least part of the valve seat component is located in the valve body cavity; the valve component is fixedly connected to the valve body, and the coil assembly is fixedly connected to the valve body; or, the coil assembly is fixedly connected to the valve component, and the valve component is fixedly connected to the coil assembly.

Images