Valve device

Abstract

The valve device comprises a coil assembly and a valve component, the coil assembly further comprises a connecting piece, the connecting piece is fixedly connected with a shell portion of the coil assembly, the connecting piece is provided with a center hole, the valve component is located in the center hole, and a sealing portion is vulcanized on the inner side portion of the connecting piece and / or the outer side portion of the valve component. The sealing portion seals a gap between the coil assembly 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, characterized in that the valve device comprises a coil assembly and a valve component, wherein the coil assembly is arranged on the outer periphery of the valve component, and the coil assembly comprises an outer shell;

[0006] The coil assembly also includes a connecting piece, which is fixedly connected to the outer shell, and the connecting piece has a center hole. The valve component is located in the center hole. A sealing portion is vulcanized on the inner side of the connecting piece and / or the outer side of the valve component, and the sealing portion seals the gap between the coil assembly and the valve component.

[0007] An embodiment of the present application provides a valve device, which includes a coil assembly, a valve component, and the coil assembly further includes a connector, which is fixedly connected to the outer shell of the coil assembly, the connector has a center hole, the valve component is located in the center hole, and a sealing portion is vulcanized on the inner side of the connector and / or the outer side of the valve component, and the sealing portion seals the gap between the coil assembly and the valve component. Such a structure is relatively simple, which is conducive to improving the installation efficiency of the valve device. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] 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;

[0009] Figure 2 yes Figure 1 Schematic diagram of the cross-sectional structure of the middle valve device along the AA plane;

[0010] Figure 3 yes Figure 2 A schematic diagram of the enlarged structure of the middle part A;

[0011] Figure 4 yes Figure 2 A schematic cross-sectional view of the structure of the combined structure of the middle coil assembly and the connecting piece from one perspective;

[0012] Figure 5 yes Figure 2 A three-dimensional structural schematic diagram of a structure in which a sealing portion is vulcanized in a middle connecting piece from one perspective;

[0013] Figure 6 yes Figure 5 A schematic diagram of a cross-sectional structure from one perspective of the structure;

[0014] Figure 7 is a structural schematic diagram of a second embodiment of the valve device, in which a valve component is vulcanized with a sealing portion from one perspective;

[0015] Figure 8 is a schematic diagram of the enlarged structure of part A in the second embodiment of the valve device corresponding to the first embodiment;

[0016] Fig. 9 is a schematic diagram of the enlarged structure of part A in the third embodiment of the valve device, corresponding to the first embodiment;

[0017] Fig.10 is a fourth embodiment of the valve device, a schematic diagram of the enlarged structure of part A corresponding to the first embodiment;

[0018] Fig.11 It is a schematic diagram of the enlarged structure of part A in the sixth embodiment of the valve device corresponding to the first embodiment. DETAILED DESCRIPTION

[0019] 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.

[0020] 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.

[0021] 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.

[0022] The coil assembly 1 includes a shell 11 and a stator assembly 12. The shell 11 is made of plastic. In this embodiment, the stator assembly 12 is used as an insert, and the coil assembly 1 is formed by injection molding. The shell 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.

[0023] refer to Figure 2-Figure 9The valve device 100 includes a connector 6, which is fixedly connected to the outer shell 11. In this embodiment, the connector 6 is fixedly connected to the outer shell 11 by ultrasonic heat riveting, and the connector 6 is fixed to the bottom of the outer shell 11. In other embodiments, the connector 6 can also be fixed to the outer shell 11 by means of snap-fitting or the like. The connector 6 includes an annular plate-shaped portion 61 and a side connecting portion 62. The annular plate-shaped portion 61 is fixedly connected to the outer shell 11. After the connector 6 is fixedly connected to the outer shell 11, it is fixedly connected to the valve body 3 as a component through the side connecting portion 62. The connection method includes screw connection, snap-fitting, etc. In this embodiment, the connector 6 has a central hole 63, and the valve component 2 is located in the central hole 63. The connector 6 is sleeved on the outer periphery of the valve component 2. The inner side 64 of the connector 6 and / or the outer side of the valve component 2 are vulcanized with a sealing portion 4, and the sealing portion 4 seals the gap between the coil assembly 1 and the valve component 2. In this embodiment, the sealing portion 4 is formed by a vulcanization process, and the sealing portion 4 can be directly fixed on the connecting piece 6 or the valve seat assembly. During the assembly process, one assembly process can be reduced. This arrangement is conducive to simplifying the installation efficiency of the valve device 100 and ensuring the reliability of the seal.

[0024] Combination Figure 2-Figure 6 In the first embodiment of the present application, the sealing portion 4 covers the inner portion 64 of the connector 6. Specifically, the center hole 63 is located in the annular plate portion 61, and the inner portion 64 of the annular plate portion 61 surrounding the center hole 63 is covered by the sealing portion 4. In this embodiment, at the inner portion 64 of the annular plate portion 61, the sealing portion 4 at least includes an upper sealing portion 41 covering a portion of the upper end surface of the annular plate portion 61 and an inner sealing portion 42 covering the inner peripheral wall forming the center hole 63. The inner sealing part 42 abuts against the valve component 2, specifically, the sleeve 21 or the valve seat assembly 22 of the valve component 2, thereby sealing the gap between the connector 6 and the valve component 2; the upper sealing part 41 abuts against the bottom of the outer shell 11, thereby sealing the gap between the connector 6 and the bottom of the outer shell 11; through the joint action of the two seals, the purpose of preventing external gas or liquid from entering the gap between the coil assembly 1 and the sleeve 21 is achieved, and the valve device 100 is prevented from having adverse effects, such as corrosion of the stator claw pole of the stator assembly 12. In this embodiment, the sealing part 4 also includes a lower sealing part 43 covering a portion of the lower end surface of the annular plate-shaped part 61. The upper sealing part 41, the inner sealing part 42 and the lower sealing part 43 of the sealing part 4 are vulcanized and formed as a whole. Such a configuration is conducive to improving the strength of the sealing part 4 and improving the service life of the sealing part 4.

[0025] Combination Figure 7-Figure 8 , and refer to Figure 2In the second embodiment of the present application, the sealing portion 4 is fixed to the outer side of the sleeve 21 by a vulcanization process, and the sealing portion 4 is roughly annular. The sealing portion 4 fixed to the outer side of the sleeve 21 abuts against the outer shell 11. Specifically, in this embodiment, the bottom of the outer shell 11 has a plane or an inclined surface, and the sealing portion 4 fixed to the outer side of the sleeve 21 abuts against the bottom plane or inclined surface of the outer shell 11, thereby preventing external gas or liquid from entering the gap between the coil assembly 1 and the sleeve 21. This arrangement can also facilitate the processing and forming of the sealing portion 4 and improve the assembly efficiency of the valve device 100.

[0026] Combination Figure 7 , 9 , and refer to Figure 2 In the third embodiment of the present application, relative to the second embodiment, in this embodiment, the sealing portion 4 fixed on the outer side of the sleeve 21 abuts against the sealing portion 4 fixed on the outer side of the sleeve 21 to achieve sealing, that is, in this embodiment, the sealing portion 4 is provided on the inner side 64 of the annular plate-shaped portion 61, and the sealing portion 4 is also provided on the outer side of the sleeve 21. The scheme of providing the sealing portion 4 on the inner side 64 of the annular plate-shaped portion 61 can refer to the first embodiment. In this embodiment, the sealing can be achieved by abutting two sealing portions 4, which is conducive to improving the sealing reliability.

[0027] Combination Figure 7 , 10 , and refer to Figure 2 In the fourth embodiment of the present application, the shell portion 11 includes a housing portion 114, and the housing portion 114 is located at the bottom of the shell portion 11. The housing portion 114 includes a housing groove 1141, and the sealing portion 4 fixed at least partially to the outer side of the sleeve 21 is located in the housing groove 1141. The housing groove 1141 is recessed from the bottom surface of the shell portion 11 and is recessed in the axial direction. The housing portion 114 includes a housing portion bottom wall 1142 and a housing portion side wall 1143. The sealing portion 4 fixed to the sleeve 21 abuts against the housing portion bottom wall 1142, and / or the sealing portion 4 fixed to the sleeve 21 abuts against the housing portion side wall 1143. This arrangement can also achieve a good sealing effect.

[0028] In the fifth embodiment of the present application, for the solutions of the second, third and fourth embodiments, the sealing part 4 can be fixed to the outer side of the sleeve 21 by vulcanization process instead of being fixed to the outer side of the valve seat assembly 22 by vulcanization process, or the sealing part 4 can be fixed to the connection between the sleeve 21 and the valve seat assembly 22 by vulcanization process. At this time, the matching relationship between the valve component 2 and the coil assembly 1 or the connector 6 can refer to the solutions of the first, second, third and fourth embodiments, and this embodiment can also achieve a good sealing effect.

[0029] Combination Figure 7 , 11, and refer to Figure 2 In the sixth embodiment of the present application, the sleeve 21 includes a large diameter portion 211 and a small diameter portion 212. The large diameter portion 211 is arranged closer to the valve seat assembly 22 than the small diameter portion 212, and the large diameter portion 211 and the small diameter portion 212 are connected by a transition portion 213. In this embodiment, the sleeve 21 is an integral structure, 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, and the large diameter portion 211 is expanded by stamping, which can simplify the processing of the sleeve 21. The sealing portion 4 is fixed above the transition portion 213 by a vulcanization process, and the sealing portion 4 is in contact with the lower end surface of the shell portion 11. The specific structure of the lower end surface of the shell portion 11 here includes the specific scheme in the aforementioned embodiment. Such a configuration can provide a support portion for the bottom of the sealing portion 4, which is conducive to improving the strength of the sealing portion 4, and improving the sealing reliability and service life of the sealing portion 4.

[0030] refer to Figure 2-Figure 6 In the embodiment of the present application, further, the shell part 11 also includes a cover part 112, the cover part 112 is extended upward from the upper end of the stator assembly 12, part of the sleeve 21 is located in the inner cavity formed by the cover part 112, and the cover part 112 has an exhaust hole 1121. The valve device 100 also includes a waterproof breathable membrane 5, the waterproof breathable membrane 5 is fixedly connected to the cover part 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 part 112, and the waterproof breathable membrane 5 and the cover part 112 are fixed by pressing, bonding or welding, and form an annular connection part, 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. Such a setting can also prevent suffocation during assembly, reduce the difficulty of assembling the valve component 2 and the coil assembly 1, and improve the reliability of assembly.

[0031] refer to Figure 2-Figure 6In this embodiment, 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 chamber 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 chamber 13 can be discharged from 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, so that the second exhaust hole 1522 can be indirectly sealed. Such an arrangement can further reduce the difficulty of assembling the valve component 2 and the coil assembly 1 and improve the reliability of the assembly.

[0032] 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), and the coil assembly (1) has an outer shell (11); The coil assembly (1) further comprises a connecting member (6), wherein the connecting member (6) is fixedly connected to the outer shell (11), the connecting member (6) has a central hole (63), the valve component (2) is located in the central hole (63), and a sealing portion (4) is vulcanized on an inner side (64) of the connecting member (6) and / or an outer side of the valve component (2), and the sealing portion (4) seals a gap between the coil assembly (1) and the valve component (2).

2. The valve device (100) according to claim 1, characterized in that The sealing portion (4) is formed by a vulcanization process. The valve device (100) further comprises a valve body (3). The connecting piece (6) is fixedly connected or limit-connected to the valve body (3). 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), and a sealing arrangement is provided at the connection between the two.

3. The valve device (100) according to claim 2, characterized in that The sealing portion (4) covers the inner portion (64) of the connecting member (6), and the sealing portion (4) at least includes an upper sealing portion (41) covering the upper end surface of the connecting member (6) and an inner sealing portion (42) covering the inner wall of the connecting member (6), the inner sealing portion (42) abuts against the sleeve (21) or the valve seat assembly (22), and the upper sealing portion (41) of the sealing portion (4) abuts against the bottom of the outer shell portion (11).

4. The valve device (100) according to any one of claims 1 to 3, characterized in that: The sealing portion (4) is fixed to the outer side of the sleeve (21) or the outer side of the valve seat assembly (22) through a vulcanization process, and the sealing portion (4) is in contact with the outer shell portion (11).

5. The valve device (100) according to claim 4, characterized in that The sealing portion (4) fixed on the outer side of the sleeve (21) abuts against the sealing portion (4) fixed on the inner side (64) of the connecting member (6); or the sealing portion (4) fixed on the outer side of the sleeve (21) abuts against the outer shell (11).

6. The valve device (100) according to claim 5, characterized in that The bottom of the shell portion (11) has a plane or an inclined surface, and the sealing portion (4) fixed to the outer side of the sleeve (21) abuts against the plane or inclined surface of the bottom of the shell portion (11); or, the shell portion (11) includes a receiving portion (114), the receiving portion (114) is located at the bottom of the shell portion (11), and the receiving portion (114) includes a receiving groove (1141), which is at least partially fixed to the sealing portion (4) on the outer side of the sleeve (21). Located in the accommodating groove (1141), the accommodating groove (1141) is recessed in the axial direction from the bottom surface of the shell portion (11), and the accommodating portion (114) includes an accommodating portion bottom wall (1142) and an accommodating portion side wall (1143), and the sealing portion (4) fixed to the sleeve (21) abuts against the accommodating portion bottom wall (1142), and / or the sealing portion (4) fixed to the sleeve (21) abuts against the accommodating portion side wall (1143).

7. The valve device (100) according to claim 3 or 5, characterized in that: The sleeve (21) includes a large diameter portion (211) and a small diameter portion (212), wherein the large diameter portion (211) and the small diameter portion (212) are connected via a turning portion (213), wherein the large diameter portion (211) is located below the small diameter portion (212), and the sealing portion (4) is fixed above the turning portion (213) via a vulcanization process, and the sealing portion (4) abuts against the lower end surface of the outer shell portion (11).

8. The valve device (100) according to claim 6 or 7, 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).

9. The valve device (100) according to claim 1, 6 or 7, characterized in that The coil assembly also includes a stator assembly (12); the outer shell (12) is made of plastic material; the outer shell (11) covers a portion of the stator assembly (12); or the outer shell (11) and the stator assembly (12) are separate structures; the outer shell (11) and the stator assembly (12) are fixedly connected.

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