Electric valve and assembly method

Abstract

The present invention discloses an electrically operated valve, comprising a first valve body (401) and a second valve body (402), wherein the first valve body (401) and the second valve body (402) are separate structures, the second valve body (402) comprises a first opening (42), the first opening (42) has a mounting chamber (423) that opens toward the housing, at least a portion of a first sensing device (50) is located in the mounting chamber (423), and the second valve body (402) is connected to the housing (10) in a fixed or positionally restricted manner, and when the first sensing device is to be replaced, the first sensing device can be removed by separating the second valve body and the housing, which contributes to simplifying the step of replacing the first sensing device, and a method of assembling the electrically operated valve is also disclosed.

Description

Technical Field

[0001] This application claims the priority of the following three Chinese patent applications, and all of their contents are incorporated into this application by reference. 1. A Chinese patent application filed with the China National Intellectual Property Administration on September 7, 2022, with the application number 202211091072.2; 2. A Chinese patent application filed with the China National Intellectual Property Administration on September 7, 2022, with the application number 202211091093.4; 3. A Chinese patent application filed with the China National Intellectual Property Administration on September 7, 2022, with the application number 202211091648.5. The present invention relates to the technical field of fluid control, and specifically relates to an electric valve and an assembly method.

Background Art

[0002] In air conditioning systems and thermal management systems, in order to improve the flow control accuracy of the working medium, an electric valve is often adopted as a throttle element, and a first sensing device for detecting temperature and / or pressure is attached to the electric valve. The first sensing device is electrically connected to the electric control board of the electric valve, or directly electrically connected to an ECU (Electronic Control Unit). When the first sensing device encounters a situation where parameter adjustment or maintenance is required during use, it is necessary to open the housing equipped with the electric control board, remove the electric control board, and then remove the first sensing device. Therefore, the replacement process of the first sensing device is complicated.

Summary of the Invention

Problems to be Solved by the Invention

[0003] The object of the present invention is to provide an electric valve and an assembly method that contribute to simplifying the replacement step of the first sensing device.

Means for Solving the Problems

[0004] To achieve the above objective, embodiments of the present invention are as follows. That is, the electric valve includes a first sensing device, a valve body and a valve member, the valve body includes a first valve body and a second valve body, the first valve body and the second valve body are separate structures, the first valve body and the second valve body are connected or abutted to be fixedly connected or position-restricted, at least a portion of the valve member is located in the first valve body, the electric valve includes a housing, at least a portion of the valve member is located in the housing, the second valve body is connected to the housing to be fixedly connected or position-restricted, the second valve body includes a first opening, the first opening has a mounting chamber opening toward the housing, at least a portion of the first sensing device is located in the mounting chamber, the electric valve has a first passage and a second passage, the second passage is located in the first valve body and the first passage is located in the second valve body, and the first sensing device is used to detect the temperature and / or pressure of the working medium in the first passage.

[0005] Another embodiment of the present invention discloses an assembly method used for assembling an electric valve, the electric valve comprising a housing, a valve member, a valve body, a first sensing device, and a control unit, the valve body comprising a separate first valve body and a second valve body, the second valve body comprising a first opening, and the assembly steps are as follows: placing a part of the first sensing device in the mounting chamber of the first opening, fixing the first sensing device and the second valve body, When a portion of the valve member is fitted into the chamber of the housing, and the first valve body is fitted onto the valve member along the axial direction of the valve member, and the positions of the housing and the first valve body are fixed, the valve member is pressed against the first valve body and the housing. The sensor side of the second valve body, to which the first sensing device is attached, faces the housing, and when the second valve body and housing are assembled, a part of the first sensing device is located in the housing, and the first sensing device is electrically and / or signally connected to the control unit.

[0006] The valve body of an embodiment of the present invention includes a first valve body and a second valve body, the first valve body and the second valve body being separate structures, the second valve body including a first opening, the first opening having a mounting chamber opening toward the housing, at least a portion of the first sensing device being located in the mounting chamber, and the second valve body being fixedly connected to or positionally restricted by the housing, and when replacing the first sensing device, the first sensing device can be removed by separating the second valve body and the housing separately, which contributes to simplifying the replacement step of the first sensing device. [Brief explanation of the drawing]

[0007] [Figure 1] This is a three-dimensional view of one embodiment of an electric valve. [Figure 2] This is a three-dimensional view of one embodiment of an electric valve. [Figure 3] This is a cross-sectional view of one embodiment of an electric valve. [Figure 4] This is a partially exploded view of one embodiment of an electric valve. [Figure 5] This is a diagram showing the connection structure between the first valve body and the second valve body of one embodiment of an electric valve. [Figure 6] This is a diagram illustrating the positional restriction structure between the first valve body and the second valve body of one embodiment of an electric valve. [Figure 7] This is a schematic diagram of the first valve body of one embodiment of an electric valve. [Figure 8] This is a schematic diagram of the second valve body of one embodiment of an electric valve. [Figure 9] This is a partially enlarged view of location A in one embodiment of Figure 3. [Figure 10]It is a partially enlarged view at location A of another embodiment of FIG. 3. [Figure 11] It is a schematic diagram of a first sensing device of an embodiment of an electric valve. [Figure 12] It is a connection structure diagram of the first sensing device and the valve body of an embodiment of an electric valve. [Figure 13] It is a partially exploded view of an embodiment of an electric valve. [Figure 14] It is an enlarged view at location B of FIG. 13. [Figure 15] It is a partially exploded view of an embodiment of an electric valve. [Figure 16] It is an enlarged view at location C of FIG. 13. [Figure 17] It is a connection structure diagram of a position detection device and an electrical connection part of an embodiment of an electric valve. I [Figure 18] It is a partial cross-sectional view of an embodiment of an electric valve. [Figure 19] It is a partial cross-sectional view of an embodiment of an electric valve. [Figure 20] It is a perspective view of an embodiment of an electric valve. [Figure 21] It is an enlarged view at location D of FIG. 20. [Figure 22] It is a structural diagram of an embodiment of an electric valve.

MODE FOR CARRYING OUT THE INVENTION

[0008] Hereinafter, the present invention will be further described in combination with the drawings and specific examples.

[0009] Referring to FIGS. 1, FIG. 2 and FIG. 3, the electric valve 1 includes a control unit 1a, a valve body 40, a valve member 21 and a stator unit 20. The stator unit 20 is fixed to the control unit 1a, and the stator unit 20 is electrically connected and / or signal-connected to the control unit 1a. The control unit 1a can be electrically connected and / or signal-connected to the outside. The stator unit 20 is fitted on the outer periphery of the valve member 21, the stator unit 20 is fixed to the valve body 40, and a part of the valve member 21 is located in the valve body 40. The electric valve 1 further includes a first sensing device 50. The first sensing device 50 is fixed to the valve body 40 and is electrically connected and / or signal-connected to the control unit 1a, and can detect the temperature and / or pressure of the working medium.

[0010] The electric valve 1 includes an inlet 212, an outlet 213, a first passage 41, and a second passage 214. The second passage 214 communicates the inlet 212 and the outlet 213. Along the axial direction of the stator unit 20, the first passage 41 is away from the stator unit 20 from the inlet 212 and the outlet 213. The valve body 40 includes a first valve body 401 and a second valve body 402. The inlet 2​​​​​​​​​Preferably, the material of the second valve body includes PPS, PA66, etc.

[0012] The axial direction of the stator unit 20 is defined as the reference direction, the valve member 21 is drilled into the first valve body 401 along the reference direction, the second valve body 402 is further away from the valve member 21 than the first valve body 401, and a portion of the first sensing device 50 is located in the second valve body 402. In one embodiment, the axial direction of the first sensing device 50 is at an angle to the reference direction, and therefore the assembly direction of the first valve body 401 and the assembly direction of the second valve body 402 are different. In the assembly process, the first sensing device 50 is first attached to the second valve body 402, and then the first valve body 401, the second valve body 402, and the control unit 1a are assembled in that order. This eliminates the need to attach the first sensing device 50 to the valve body 40 from the electrical control side, simplifying the assembly process. In this embodiment, the axial direction of the first sensing device 50 is perpendicular to the reference direction. In another embodiment, the axial direction of the first sensing device 50 is parallel to the reference direction, i.e., the mounting direction of the first sensing device 50 is parallel to the mounting direction of the stator unit 20, and this design allows for a reduction in the height of the device in one direction to adapt to the needs of different environments.

[0013] The valve member 21 includes a valve body 202 and a rotor unit 203, the valve member 21 having a valve port 211 located in the second passage 214, and the valve body 202 is movable and can adjust the opening degree of the valve port 211. The first valve body 401 includes a third opening 4011, the opening of which is set back from the second valve body 402, and a portion of the valve member 21 is located in the third opening 4011.

[0014] The control unit 1a includes an electrical control unit 30 and a housing 10, the housing 10 having a first chamber 15, and the electrical control unit 30 is located in the first chamber 15.

[0015] The connection method for the first valve body 401 and the second valve body 402 includes fixed connection, position-restricted connection, or abutment, and the first valve body 401 and the second valve body 402 may be connected individually, or they may be connected to the housing 10 at the same time as the first valve body 401 and the second valve body 402 are connected, which can contribute to improving the mounting stability of the first valve body 401 and the second valve body 402. Here, several mounting methods can be mentioned. One connection method is in which one side of the first valve body 401 is in contact with the housing 10, and the other side is in contact with the second valve body 402. The second valve body 402 is fixed to the housing 10, and the first valve body 401 is in contact with and its position is restricted by the second valve body 402 and the housing 10. Another connection method involves fixing the first valve body 401 to the housing 10, fixing the second valve body 402 to the housing 10, and having the first valve body 401 and the second valve body 402 in contact with each other. Another connection method involves fixing the first valve body 401 to the housing 10, fixing the second valve body 402 to the housing 10, and fixing the first valve body 401 to the second valve body 402. Of course, the actual installation may include the connection methods described above, but it is not limited to these; any method that achieves a secure fixing effect is acceptable.

[0016] Of course, the first valve body 401 and the second valve body 402 may not be connected or in contact with each other. In one embodiment, the first valve body 401 is fixed to the housing 10, and the second valve body 402 is fixed to the housing 10, but there is a gap between the first valve body 401 and the second valve body 402. When the first valve body 401 and the second valve body 402 are bonded together, a microscopic gap still exists between them. External corrosive substances tend to remain in this gap, causing corrosion. When the first valve body 401 and the second valve body 402 are not bonded together, the gap between them is larger, significantly reducing the probability of corrosive substances accumulating. Therefore, preventing contact between the first valve body 401 and the second valve body 402 reduces the probability of corrosion. Here, a portion of the valve member 21 is drilled into the first valve body 401 along the reference direction, and the first valve body 401 is pressed and its position is restricted by the housing 10 and the second valve body 402 on both sides along the reference direction, making it less likely to shift position. The aforementioned fixing method is a removable fixing connection method, such as a bolt connection. In this embodiment, the first valve body 401 is fixed to the housing 10, and the second valve body 402 is fixed to the housing 10. It should be noted that this connection method is included in practice, but is not limited to it.

[0017] Referring to Figures 2, 4, and 5, the electric valve 1 includes a first bolt 4023 and a second bolt 4024, defining the axial direction of the first sensing device 50 as the first direction, which is perpendicular to the reference direction. The first bolt 4023 is provided along a first direction, with a portion located in a first hole (not shown) of the housing 10, and after passing through the housing 10, the end of the first bolt 4023 is screw-connected to the second valve body 402 and used to fix the second valve body 402 to the housing 10, and the first direction is perpendicular to the axial direction of the stator unit 20. The third bolt 4025 is provided along the reference direction or the first direction, with a portion located in the second hole (not shown) of the housing 10, and after passing through the housing 10, the end of the third bolt 4025 is screw-connected to the first valve body 401 and is used to secure the first valve body 401 to the housing 10. In other embodiments, the first bolt 4023, the second bolt 4024, and the third bolt 4025 may be other parts capable of achieving a fixing effect, and actual use includes, but is not limited to, the above-described structure.

[0018] All of the above connection methods can achieve the effect of being removable, allowing for inspection and replacement of internal parts, and contributing to extending the service life of the electric valve 1. Actual use includes, but is not limited to, the above connection methods. In this embodiment, only a fixing method is shown in which the third bolt 4025 connects the housing 10 and the first valve body 401 along the reference direction.

[0019] Both the first valve body 401 and the second valve body 402 are fixed in contact with the housing 10 on at least one side. The valve body 40 has a weight-reducing groove 407, and in this embodiment, along the first direction, the weight-reducing groove 407 is located on the side of the first valve body 401 that abuts against the housing 10, and a second direction is defined as a direction that is perpendicular to the reference direction and perpendicular to the first direction, and the weight-reducing groove 407 is provided penetrating along the second direction. By providing the weight-reducing groove 407, the portion of the housing 10 that protrudes from the first valve body 401 can be retracted, contributing to a reduction in the weight of the electric valve 1. On the other hand, the housing 10 is formed by integral injection molding using injection molding material, and therefore a certain amount of deformation exists after cooling molding, reducing the contact area between the first valve body 401 and the housing 10, and resulting in more sufficient contact between the valve body 40 and the housing 10. All of the above connection methods can achieve the effect of being removable, allowing for inspection and replacement of internal parts, and contributing to extending the service life of the electric valve 1. Actual use includes, but is not limited to, the above connection methods.

[0020] Referring to Figures 5, 6, 7, and 8, the first valve body 401 includes a first protrusion 403, the first protrusion 403 includes a first top wall 403a, the first protrusion 403 protrudes toward the second valve body 402 from the rest of the first valve body 401, the first top wall 403a is located on the protruding side, and the first valve body 401 has a first recess 4031 formed relative to the first protrusion 403, the first recess 4031 includes a first bottom wall 4031b. The second valve body 402 includes a second protrusion 404, the second protrusion 404 includes a second top wall 404a, the second protrusion 404 protrudes toward the first valve body 401 more than the rest of the second valve body 402, the second top wall 404a is located on the protruding side, and the second valve body 402 has a second recess 4041 formed relative to the second protrusion 404, the second recess 4041 includes a second bottom wall 4041b.

[0021] At least a portion of the first protrusion 403 is located in the second recess 4041, and the first top wall 403a and the second bottom wall 4041b are in contact with each other; at least a portion of the second protrusion 404 is located in the first recess 4031, and the second top wall 404a and the first bottom wall 4031b are in contact with each other; both the first protrusion 403 and the second protrusion 404 include a contact portion 406, and the contact portions 406 of both are in contact with each other. In this embodiment, the contact portion 406 of the first valve body 401 includes at least the first top wall 403a, the first bottom wall 4031b, and the wall of the first protrusion 403 facing the second protrusion 404. The contact portion 406 of the second valve body 402 includes at least the second top wall 404a, the second bottom wall 4041b, and the wall of the second protrusion 404 facing the first protrusion 403.

[0022] The two walls on which the first protrusion 403 and the second protrusion 404 face each other can restrict the position of the first protrusion 403 along the second direction. The contact portions 406 of the first protrusion 403 and the second protrusion 404 come into contact with each other, thereby achieving the effect of restricting their positions along the second direction. Furthermore, compared to the first valve body 401 and the second valve body 402 being in contact on only one plane, providing the first protrusion 403 and the second protrusion 404 reduces the flatness requirement of the first valve body 401 and the second valve body 402, thereby reducing the difficulty of machining.

[0023] Referring to Figures 6, 7, and 8, the electric valve 1 includes a position limiting component 408 and a position limiting groove 409, the position limiting component 408 and the position limiting groove 409 are located on opposite sides of the first protrusion 403 and the second protrusion 404, at least a portion of the position limiting component 408 is located in the position limiting groove 409, and the position limiting component 408 is capable of relatively limiting the position of the first protrusion 403 and the second protrusion 404 along the reference direction. When the position-restricting groove 409 is located on the first protrusion 403, the position-restricting component 408 is fixedly connected to the second protrusion 404, connected in a way that restricts its position, or has an integrated structure. When the position-restricting groove 409 is located on the second protrusion 404, the position-restricting component 408 is fixedly connected to the first protrusion 403, connected in a way that restricts its position, or has an integrated structure. Providing the position-restricting component 408 can reduce the probability that the first protrusion 403 and the second protrusion 404 will swing in the reference direction. In this embodiment, the position limiting component 408 is a key integrally molded with the first protrusion 403 or the second protrusion 404, and in other embodiments, it includes the above-described connection structure, but is not limited thereto.

[0024] Both the first protrusion 403 and the second protrusion 404 have a connecting hole 405, and the connecting hole 405 is provided through the protrusion. The electric valve 1 includes a second bolt 4024 for fixing the first valve body 401 and the second valve body 402 relative to each other, or for fixing the first valve body 401 and the second valve body 402 to another device. The second bolt 4024 is drilled in the connection hole 405 of the first protrusion 403 and the second protrusion 404 along the second direction and is gap-fitted with at least a portion of the wall of the connection hole 405 of the first protrusion 403 and the second protrusion 404. In this embodiment, the second bolt 4024 includes two bolts spaced apart along the first direction, passing through the first protrusion 403 and the second protrusion 404 along the second direction, with the ends of the bolts having threaded portions that pass through the first valve body 401 or the second valve body 402, allowing the entire electric valve 1 to be conveniently fixed to the required components. By providing the first protrusion 403 and the second protrusion 404, the effect of convenient connection and fixing is achieved, and furthermore, the fact that one of the first protrusion 403 and the second protrusion 404 presses against the other contributes to increasing the connection strength.

[0025] When implemented, one side of the first valve body 401 is bonded to the housing 10, the first valve body 401 moves along the axial direction of the valve member 21, a portion of the valve member 21 enters the first valve body 401, and the third bolt 4025 fixes the relative position between the first valve body 401 and the valve member 21. Then, the first sensing device 50 is mounted inside the second valve body 402 along the first direction, the second valve body 402 abuts and engages with the housing 10 in the first direction, a part of the first sensing device 50 is inserted into the housing 10 and electrically connected to the electrical control unit 30, the second valve body 402 and the first valve body 401 engage and abut each other, simplifying the difficulty of mounting each component, and the first bolt 4023 fixes the relative position between the second valve body 402 and the housing 10. Here, instead of the first bolt 4023, the positions of the first valve body 401 and the second valve body 402 may be connected via the second bolt 4024. In this case, the relative positions of the three components, the first valve body 401, the second valve body 402, and the housing 10, are already fixed, and the entire electric valve 1 can be fixed to the other components by the second bolt 4024 passing through the first protrusion 403 and the second protrusion 404.

[0026] For mounting the first sensing device 50, the valve body 40 includes a first opening 42 and a communication passage (not shown), the first opening 42 having a mounting chamber 423, the first opening 42 having a first opening 421 and a second opening 422 provided opposite each other, the first opening 421 and the second opening 422 located on either side of the mounting chamber 423, the first opening 421 communicating with the mounting chamber 423 and the second opening 422 communicating with the mounting chamber 423, the first opening 421 facing the electrical control unit 30, the first sensing device 50 can be installed from the first opening 421 side, and a portion of the first sensing device 50 is located in the mounting chamber 423. In this embodiment, the first opening 42 is located in the second valve body 402, and the first sensing device 50 includes a temperature-sensitive part 502 and a pressure-sensitive part (not shown). In other embodiments, it may include only the temperature-sensitive part 502 or only the pressure-sensitive part. The second opening 422 is opposite to the opening direction of the first opening 421, and the chamber formed by the first opening 42 communicates with a communication passage (not shown) via the second opening 422, which communicates with the first passage 41 and is used to detect the temperature and / or pressure of the working medium in the first passage 41.

[0027] Referring specifically to Figures 3, 9, and 11, the valve body 40 includes a first stage portion 4021 and a second stage portion 4022, and along the axial direction of the first sensing device 50, the first stage portion 4021 is closer to the first passage 41 than the second stage portion 4022, and the wall forming the first opening 42 includes at least a portion of the wall of the first stage portion 4021 and at least a portion of the wall of the second stage portion 4022. The electric valve 11 includes a second sealing component 52, one side of which abuts against the wall of the first opening 42 and the other side abuts against the wall of the first sensing device 50, and is used to seal the gap between the first opening 42 and the first sensing device 50, thereby reducing the risk of the working medium leaking from the gap.

[0028] The electric valve 1 includes a second groove 54 and a second wall 56, the second groove 54 having a second groove 541, and at least a portion of the second sealing component 52 is located in the second groove 541. The wall forming the first opening 42 includes a second wall 56, the second wall 56 is provided opposite a portion of the wall of the second groove 54, the second sealing component 52 has one side in contact with the wall of the second groove 54 and the other side in contact with the second wall 56, and the second groove 54 and the second wall 56 are located along the second direction between the first stage portion 4021 and the second stage portion 4022. When the second groove 54 is located on the first sensing device 50, the second groove 54 is recessed in an annular shape relative to the first sensing device 50, and when the second groove 54 is located on the second valve body 402, the second groove 54 is recessed in an annular shape relative to the second valve body 402. The first sensing device 50 or the second valve body 402 is provided with a second groove 54, and a portion of the second sealing component 52 is located in the second groove 54, which helps to mount the remaining components after the second sealing component 52 has been mounted, thereby improving the convenience of mounting.

[0029] Referring to Figures 9, 11, and 12, the first sensing device 50 includes a boss 57, the boss 57 is provided projecting radially along the first sensing device 50, and along the axial direction of the first sensing device 50, the boss 57 may be annular or non-annular, and the boss 57 may have a regular or irregular shape. The second stage portion 4022 includes a second stage surface 4022a, and at least a portion of the boss 57 is in contact with the second stage surface 4022a. The electric valve 1 includes a fixing component 58, which is positioned along the axial direction of the first sensing device 50. The fixing component 58 is used to restrict the position of the first sensing device 50 and to bring at least a portion of the boss 57 into contact with the wall of the first opening 42, thereby preventing the first sensing device 50 from coming out. In this embodiment, the fixing component 58 is a bolt, which is drilled into the boss 57 along the second direction, and the end of the bolt includes a threaded segment, which is screwed to the second valve body 402, thereby pressing the first sensing device 50 against the second stage surface 4022a. At least two bolts are provided. In other embodiments, the fixing component 58 may be a nut, in which case the threaded segment of the nut is located on its outer circumferential wall, and the nut is screwed to the wall of the first opening 42, thereby pressing the first sensing device 50 against the second stage surface 4022a. The device enables quick removal and installation, simplifying the installation process and improving the convenience of attachment and detachment. Note that the surface of the first sensing device 50 and the surface of the first stage section 4021 may be in contact with each other or fitted together. The fixing component 58 can serve the purpose of fixing the first sensing device 50, and at the same time, the contact of the first sensing device 50 with the second stage surface 4022a can reduce to some extent the probability of the working medium leaking.

[0030] Referring to Figures 9, 10, 13, and 14, the electric valve 1 includes a through-hole portion 131 having a through-hole 131a, the through-hole portion 131 includes at least a portion of the wall forming the through-hole 131a, at least a portion of the opening of the through-hole 131a faces at least a portion of the opening of the first opening 42, and in this embodiment, at least a portion of the opening of the through-hole 131a is provided facing the first opening 421 of the first opening 42. Along the first direction, a portion of the first sensing device 50 is located in the through hole 131a. The first sensing device 50 includes a connection portion 501, and along the second direction, the connection portion 501 is located on the side closer to the electrical control unit 30 of the first sensing device 50. The first sensing device 50 is electrically connected to the electrical control unit 30 via a connection part 501, improving the reliability of the electrical connection between the first sensing device 50 and the electrical control unit 30. In this embodiment, the electrical control unit 30 includes a first circuit board, and in this embodiment, the connection part 501 is a metal dome. The first sensing device 50 is in contact with a land on the first circuit board via the metal dome, realizing an electrical connection between the first sensing device 50 and the first circuit board. Other embodiments include, but are not limited to, the above structure.

[0031] The electric valve 1 includes an extended portion 132, which extends toward the electrical control unit 30 relative to the housing 10 along a second direction, and at least a portion of the through-hole 131 is located in the extended portion 132. In this embodiment, the extended portion 132 is provided in an annular shape, and the design of this extended portion 132 contributes to increasing the height of the through-hole 131 in the second direction, thereby increasing the sealing path, improving the sealing effect, and reducing the probability of leakage. The electric valve 1 includes a first sealing component 52, and along the second direction, the first sealing component 52 is further away from the first passage 41 than the second sealing component 52. In one embodiment, the first sealing component 52 is in contact with the housing 10 on one side and with the first sensing device 50 on the other side. In this embodiment, the first sealing component 51 is in contact with the wall forming the through-hole 131. Specifically, at least a portion of the through-hole 131 is formed into an extended portion 132, at least a portion of one side of the first sealing component 51 is in contact with the wall of the extended portion 132, and the other side of the first sealing component 51 is in contact with the wall of the first sensing device 50. The first sealing component 51 is used to seal the gap between the through-hole 131 and the first sensing device 50, thereby reducing the probability that water vapor or the like will enter the electrical control unit 30 through the gap. In other embodiments, the contact position between the first sealing component 52 and the housing 10 includes the wall of the through-hole 131, but is not limited to this; the side wall of the housing 10 closer to the second valve body 402 may be made part of the sealing surface.

[0032] The sealing method for the first sealing component 51 includes at least two embodiments, in one embodiment in which the sealing surface formed by the through-hole 131 with respect to the first sealing component 51 is located on the outer circumference of the first sealing component 51 along the radial direction of the first sensing device 50. Along the radial direction of the first sensing device 50, the first sealing component 51 is in contact with the wall forming the through-hole 131 on one side and with the first sensing device 50 on the other side. The first sealing component 51 can be mounted on the first sensing device 50 in advance, making it less likely for the first sealing component 51 to fall out or be improperly mounted, and thus guaranteeing the sealing effect of the first sealing component 51.

[0033] In another embodiment, the through-hole 131 includes a stepped portion (not shown) and a stepped wall 131b, in which embodiment the stepped portion is annular and protrudes axially from the through-hole 131, the stepped wall 131b is located on the stepped portion (not shown) and the stepped wall 131b is further away from the electrical control unit 30 than the stepped portion. Along the axial direction of the first sensing device 50, the first sealing component 51 is positioned between the stepped wall 131b and the first sensing device 50, with one side of the first sealing component 51 in contact with the stepped wall 131b and the other side in contact with the first sensing device 50. Along the axial direction of the first sensing device 50, the first sealing component 51 is positioned between the first sensing device 50 and the stepped wall 131b, which allows for a reduction in the diameter of the hole forming the through-hole 131a of the through-hole portion 131, while also reducing the need for machining precision for the through-hole 131a.

[0034] The housing 10 further includes a rib portion 133 closer to the electrical control unit 30 than the bottom wall 151, and the housing 10 includes a side wall 152, and the wall forming the first chamber 15 includes at least a portion of the side wall 152, and the rib portion 133 is connected on one side to the extension portion 132 and on the other side to the side wall 152. In this embodiment, the rib portion 133 acts as a reinforcing rib, and the design of the rib portion 133 contributes to improving the strength of the extended portion 132 and reducing the probability of deformation of the extended portion 132. Other embodiments include, but are not limited to, the above structure. The electric valve 1 includes a positioning portion 134 which is fixedly connected to or integrally formed with the extended portion 132 and / or the rib portion 133. In this embodiment, the positioning portion 134 is injection molded integrally with the extended portion 132 and / or the rib portion 133. The electrical control unit 30 has a positioning hole 135, a part of the positioning part 134 is located in the positioning hole 135, and the positioning part 134 is fixedly connected to the electrical control unit 30 or connected in such a way that its position is restricted. The positioning section 134 here plays the role of guiding and assisting in the positioning of the electrical control unit 30, and contributes to improving the mounting stability of the electrical control unit 30. The connection method between the positioning section 134 and the electrical control unit 30 includes, but is not limited to, welding, riveting, etc.

[0035] Referring to Figures 3, 9, and 14, the electric valve 1 includes a first groove 53 and a first wall 55, the first groove 53 having a first groove 531, at least a portion of the first sealing component 51 located in the first groove 531, and the wall forming the through hole 131 includes a first wall 55 provided opposite a portion of the wall of the first groove 53, the first sealing component 51 having one side in contact with the wall of the first groove 53 and the other side in contact with the first wall 55. The first groove 53 is located in the first sensing device 50 or the housing 10, and at least a portion of the first sealing component 51 is located in the first groove 531. When the first groove 53 is located on the first sensing device 50, the first groove 53 is recessed in an annular shape relative to the first sensing device 50, and when the first groove 53 is located on the housing 10, the first groove 53 is recessed in an annular shape relative to the housing 10. In this embodiment, when the first groove 53 is located in the housing 10, at least a portion of the first groove 53 is located in the extension 132, and the first groove 53 is provided in the first sensing device 50 or the extension 132, and at least a portion of the first sealing component 51 is located in the chamber formed by the first groove 53, which can contribute to mounting the remaining components after pre-mounting the first sealing component 51, thereby improving the convenience of mounting.

[0036] The wall forming the first chamber 15 includes at least a portion of the bottom wall 151 that is closer to the valve body 40 than the electrical control unit 30, the electrical control unit 30 is located on the side of the extension 132 away from the valve body 40, the extension 132 includes a contact wall 132a, the contact wall 132a is located on the side of the extension 132 away from the second valve body 402, the contact wall 132a is closer to the electrical control unit 30 than the bottom wall 151 and forms a structure that protrudes inward relative to the first chamber 15, the contact wall 132a includes at least a portion of the wall surrounding the periphery of the through-hole 131 and may include more walls of the housing 10, at least a portion of the electrical control unit 30 is in contact with the contact wall 132a, and after the two are in contact, the positioning portion 134 is fixed to the electrical control unit 30 and contributes to the stable mounting of the electrical control unit 30.

[0037] Referring to Figures 14 to 21, the housing 10 has a second chamber 16, which is located along the radial direction of the valve member 21, on at least one side of the outer circumference of the valve member 21, and the second chamber 16 is provided in communication with the first chamber 15. The electric valve 1 includes a position detection device 60 and an electrical connection part 70. The first connecting part 71 is electrically and / or signalically connected to the position detection device 60 via a second connecting part 72. The position detection device 60 can sense the rotation of the rotor unit 203 and form a feedback signal. The electrical control unit 30 can collect the feedback signal and determine the operating state of the electric valve 1. In this embodiment, the second connecting component 72 includes a second circuit board, and the position detection device 60 can be electrically connected to the electrical control unit 30 via the second circuit board. The position detection device 60 is attached to the second chamber 16 via an electrical connection part 70, the walls forming the second chamber 16 include the bottom wall of the second chamber 16, at least a portion of the rotor unit 203 is located on one side of the bottom wall of the second chamber 16, the position detection device 60 is located on the other side of the bottom wall of the second chamber 16, and the position detection device 60 is closer to the first connecting part 71 than to the bottom wall of the second chamber 16. Furthermore, the position detection device 60 is located on the underside of the outer circumference of the rotor unit 203, that is, the position detection device 60 is closer to the valve body 40 than to the stator unit 20, and the position detection device 60 is used to detect the rotational speed of the rotor unit 203. By placing the position detection device 60 on the lower outer circumference of the rotor unit 203, compared to placing it on the upper outer circumference of the rotor unit 203, the overall height of the housing 10 can be reduced, while the detection accuracy of the position detection device 60 can be improved.

[0038] The electrical connection section 70 includes a first connecting part 71 and a second connecting part 72, the first connecting part 71 includes a fixing part 711, the housing 10 includes a first engaging part 101, the fixing part 711 and the first engaging part 101 engage and connect with each other, the wall forming the second chamber 16 includes at least a portion of the wall of the first engaging part 101, and along the axial direction of the stator unit 20, the first engaging part 101 can restrict the movement of the fixing part 711. The housing 10 has an insertion opening 712 that communicates with the second chamber 16 and opens toward the electrical control unit 30, and the first connecting component 71 can be engaged and connected to the housing 10 along the opening direction of the insertion opening 712. The first connecting component 71 and the housing 10 are connected by an engagement connection method, which has the effect of making attachment and detachment convenient, while also providing relatively good stability to the connection between the two.

[0039] The housing 10 includes a first surface 101a, and the wall forming the second chamber 16 includes the first surface 101a and a portion of the wall of the first engagement portion 101. The first engaging portion 101 is recessed relative to the first surface 101a, and the fixing portion 711 is recessed relative to the wall of the first connecting component 71. Along the opening direction of the insertion opening 712, the chamber formed by the fixing portion 711 communicates with the first chamber 15, and at least a portion of the first engaging portion 101 is located in the chamber formed by the fixing portion 711. Alternatively, the first engaging portion 101 is recessed relative to the first surface 101a, and the fixing portion 711 is recessed relative to the wall of the first connecting component 71, and at least a portion of the fixing portion 711 is located in the chamber formed by the first engaging portion 101. The structure of the fixing portion 711 and the first engaging portion 101 achieves the effect of positional restriction while simultaneously facilitating processing.

[0040] The fixing portion 711 and the first engaging portion 101 are gap-fitted or inter-fitted, and along the first direction, the fixing portion 711 and the first engaging portion 101 can slide-fit and engage with each other. In this context, engagement means that the first engagement portion 101 can restrict the fixed portion 711 from moving in a direction other than the sliding direction of both. The first connecting component 71 includes at least two fixing portions 711, which are located on two opposing walls of the first connecting component 71, and the first engaging portion 101 is also located on two opposing sides of the first surface 101a. Providing two or more sets of fixing parts 711 increases the contact area between the fixing parts 711 and the first engaging part 101, increases the friction between them, and improves the rigidity of the mounting. At the same time, because multiple fixing parts 711 are provided, the degree of engagement with the first engaging part 101 is increased, improving the stability of the mounting. The diagram of this embodiment only shows an engagement configuration in which the fixing portion 711 is recessed and the first engaging portion 101 is convex. In actual use, the engagement configuration may include, but is not limited to, the above configuration.

[0041] The housing 10 includes a second fixing portion 102, which is convex relative to the engaging portion 101 to form a position limiting step 1021. The first connecting component 71 includes a second engaging portion 713, which engages with each other. Along the opening direction of the insertion opening 712, the second fixing portion 102 can restrict the movement of the second engaging portion 713. The first connecting component 71 includes a position limiting wall 1021a, which is further away from the electrical control unit 30 than the fixing portion 711, the opening direction of the insertion port 712 is the engagement connection direction, and the position limiting wall 1021a abuts against the wall of the position limiting stage 1021 to achieve position limiting. The mutual engagement connection between the second engagement portion 713 and the second fixing portion 102 allows the position of the first connecting component 102 along the opening direction of the insertion port 712, thereby improving the stability of the mounting of the position detection device 60 and improving the accuracy of flow rate control.

[0042] When the position detection device 60 is installed, a portion of the electrical connection portion 70 to which the position detection device 60 is attached is inserted into the second chamber 16, the fixing portion 711 and the first engaging portion 101 engage with each other, and the first connecting component 71 is inserted into the second chamber 16 until the position limiting wall 1021a of the first connecting component 71 abuts against the wall of the position limiting stage 1021, that is, the installation is completed, and the electrical connection portion 70 is similarly position-limited along the opening direction of the insertion opening 712, thereby improving the stability of the installation of the position detection device 60 and improving the detection accuracy. In this embodiment, the position detection device 60 is a position sensor, and a Hall sensor is used to detect the rotational speed of the rotor unit 203.

[0043] The position detection device 60 includes a first pin portion 601 and a first positioning portion 602, the first pin portion 601 being electrically connected to a second connecting component 72, the second connecting component 72 including a first positioning hole 721, at least a portion of the first positioning portion 602 being located in the first positioning hole 721, and the first positioning portion 602 being welded to the second connecting component 72; the first connecting component 71 includes a second pin portion 714 and a second positioning portion 715, the second pin portion 714 being electrically connected to the second connecting component 72, the second connecting component 72 including a second positioning hole 722, at least a portion of the second positioning portion 715 being located in the second positioning hole 722, and the second positioning portion 715 being welded to the second connecting component 72. The first positioning portion 602 and the second positioning portion 715 are drilled into the second connecting component 72 and are used to connect and fix the position detection device 60 to the second connecting component 72 and to the second connecting component 72 to the first connecting component 71, thereby improving the strength of the connection. In this embodiment, the first pin portion 601 and the second pin portion 714 are pins, the first positioning portion 602 is welded and fixed to the second connecting component 72, and the second positioning portion 715 is welded and fixed to the second connecting component 72. In other embodiments, other fixing methods may be used, for example, electrical connection can be achieved with a conductive adhesive.

[0044] Referring to Figures 17, 18, and 22, the first connecting component 71 includes a third pin portion 716, at least a portion of which is located in the first chamber 15, and the third pin portion 716 is electrically connected to the electrical control unit 30. Furthermore, the stator unit 20 includes a fourth pin portion 201, a part of which is drilled into the housing 10, and one end of this fourth pin portion 201 is electrically connected to the stator unit 20 and the other end is electrically connected to the electrical control unit 30. The electric valve 1 further includes a connection port portion 80, which includes a fifth pin portion 81, one end of which is electrically connected to the electrical control unit 30 and the other end of which is located in the connection port portion 80 and used for electrical connection to the outside. In this embodiment, the third pin portion 716, the fourth pin portion 201, and the fifth pin portion 81 are pins.

[0045] When installing the position detection device 60, the position detection device 60, the first connecting component 71, and the second connecting component 72 are assembled in advance. Specifically, the first pin portion 601 is electrically connected to the second connecting component 72 and then fixed, and the second pin portion 714 is electrically connected to the second connecting component 72 and then fixed. The assembled components are engaged and connected to the housing 10 to ensure that the position detection device 60 is located in the second chamber 16. Subsequently, the electrical control unit 30 is assembled, ensuring that its connection holes align with components such as the third pin portion 716, the fourth pin portion 201, and the fifth pin portion 81. The electrical control unit 30 is then electrically connected to components such as the third pin portion 716, the fourth pin portion 201, and the fifth pin portion 81, and then fixed in place. Finally, the housing 10 can be assembled.

[0046] The position detection device 60 completes its connection with the electrical control unit 30 via the electrical connection part 70 and engages with the housing 10, thereby improving the stability of the position detection device 60 and improving its detection accuracy. Furthermore, by pre-assembling the position detection device 60 and the electrical connection part 70, and by having the electrical connection part 70 have a stable engagement connection structure, the position of the third pin part 716 is fixed, and when the electrical control unit 30 is installed, the accuracy of the connection between the third pin part 716 and the electrical control unit 30 can be improved, thereby improving the installation efficiency of the position detection device 60.

[0047] An assembly method used to assemble an electric valve 1, the electric valve 1 comprising a housing 10, a valve member 21, a valve body 40, and a first sensing device 50, wherein the valve body 40 comprises a separately molded first valve body 401 and a second valve body 402, the second valve body 402 comprising a first opening 42, and the assembly steps are as follows: A portion of the first sensing device 50 is positioned in the first opening 42, and the first sensing device 50 and the second valve body 402 are fixed together. A portion of the valve member 21 is fitted into the chamber of the housing 10, and the first valve body 401 is fitted onto the valve member 21 along the axial direction of the valve member 21. When fixing the positions of the housing 10 and the first valve body 401, the valve member 21 is pressed against the first valve body 401 and the housing 10. The sensor side of the second valve body 402, to which the first sensing device 50 is attached, faces the housing 10. When assembling the second valve body 402 and the housing 10, a portion of the first sensing device 50 is located in the housing 10, and the first sensing device 50 is electrically and / or signalically connected to the electrical control unit 30 inside the housing 10.

[0048] The assembly direction of the first valve body 401 is different from the assembly direction of the second valve body 402. When assembling, the first sensing device 50 is first attached to the second valve body 402, and then the first valve body 401, the second valve body 402, and the control unit 1a are assembled in that order. This eliminates the need to attach the first sensing device 50 to the valve body 40 from the electrical control side, thus simplifying the assembly process.

[0049] It is intended to explain that the above embodiments are not intended to limit the present invention, but are used solely to illustrate it. Although this specification has already described the present invention in detail with reference to the above embodiments, those skilled in the art will understand that they can still amend or substitute the present invention, and any improvements that do not depart from the spirit and scope of the invention should be included within the scope of the claims of the present invention. [Explanation of Symbols]

[0050] 1. Electric valve; 1a ···Control Unit; 10. Housing; 101 ···First engaging part; 101a...first page; 102...Second fixed part; 1021 ···Location restriction stage; 1021a ···Position restriction wall; 131...Through-hole section; 131a...through hole; 131b... stepped wall; 132...extension; 132a...Abutting wall; 133 ···Rib section; 134...Positioning section; 135 ···Positioning holes; 15...1st room; 151...Bottom wall; 152...side wall; 16...2nd room; 20... Stator unit; 201...4th pin section; 202... Valve body; 203...Rotor unit; 21... Valve component; 211...valve opening; 212...Entrance; 213...exit; 214...2nd aisle; 30. Electrical control unit; 40... Valve body; 401 ···First valve body; 4011 ···Third opening; 402...Second valve body; 4021...First stage; 4022...Second stage section; 4022a ···Second stage surface; 4023 ···First bolt; 4024 ···2nd bolt; 4025 ···3rd volt; 403 ···First protrusion; 403a ···First apex wall; 4031 ···First recess; 4031b ···First bottom wall; 404 ···Second protrusion; 404a...Second top wall; 4041 ···Second recess; 4041b...Second bottom wall; 405 ···Connection port; 406...Abutment part; 407 ···Weight-reducing grooves; 408...Position limiting component; 409...Position restriction groove; 41...1st aisle; 42 ···First opening; 421 ···First opening; 422...Second opening; 423...Installation room; 50 ···First sensing device; 501...Connection part; 502...Sensing Unit; 51...first sealing part; 52...Second sealing part; 53...First groove; 531...1st groove; 54...Second groove section; 541...2nd groove; 55...1st wall; 56...Second wall; 57 ···Boss; 58... Fixing parts; 60 ···Position detection device; 601...First pin section; 602 ···First positioning section; 70...Electrical connection part; 71 ···First connecting component; 711...Fixed part; 712... Insertion slot; 713 ···Second engaging part; 714...Second pin section; 715...Second positioning section; 716 ···Third pin section; 72...Second connecting part; 721 ···First positioning hole; 722 ···Second positioning hole; 80...Connection port; 81...5th pin section.

Claims

1. An electric valve (1), It includes a first sensing device (50), a valve body (40), and a valve member (21), The valve body (40) includes a first valve body (401) and a second valve body (402), The first valve body (401) and the second valve body (402) are separate structures. The first valve body (401) and the second valve body (402) are fixedly connected or connected or abutted in such a way that their positions are restricted. The electric valve (1) includes a housing (10) and an electrical control unit (30), At least a portion of the valve member (21) is located in the first valve body (401), At least a portion of the valve member (21) is located in the housing (10), The electrical control unit (30) is located in the first chamber (15) of the housing (10). The second valve body (402) is fixedly connected to the housing (10) or connected in such a way that its position is restricted. The second valve body (402) includes a first opening (42), The first opening (42) has an mounting chamber (423) that opens toward the housing (10), At least a portion of the first sensing device (50) is located in the mounting chamber (423), The first sensing device (50) is electrically and / or signal-wise connected to the electrical control unit (30), The electric valve (1) has a first passage (41) and a second passage (214), The second passage (214) is located in the first valve body (401), The first passage (41) is located in the second valve body (402), The electric valve (1) is characterized in that the first sensing device (50) is used to detect the temperature and / or pressure of the working medium in the first passage (41).

2. The material of the first valve body (401) includes a metal material. The electric valve (1) according to claim 1, characterized in that the density of the second valve body (402) is less than the density of the first valve body (401).

3. The material of the second valve body (402) includes plastic. The electric valve (1) according to claim 1, characterized in that the second valve body (402) is injection molded.

4. The housing (10) includes a through-hole portion (131) having a through-hole (131a), At least a portion of the first sensing device (50) is located in the through hole (131a), The electric valve (1) according to claim 3, characterized in that there is an angle between the axial direction of the first sensing device (50) and the axial direction of the valve member (21).

5. The electric valve (1) includes a first bolt (4023) and a third bolt (4025), The first bolt (4023) is provided along the first direction, and a portion of it is located in the first hole of the housing (10), The first bolt (4023) is screw-connected at one end to the second valve body (402) and is used to fix the second valve body (402) to the housing (10). The first direction is perpendicular to the axial direction of the valve member (21), and / or the third bolt (4025) is provided along the first direction or the axial direction of the valve member (21), with a portion of it located in the second hole of the housing (10). The electric valve (1) according to claim 4, characterized in that the end of the third bolt (4025) is screw-connected to the first valve body (401) and is used to fix the first valve body (401) to the housing (10).

6. The first valve body (401) includes a first protrusion (403), The first protrusion (403) is provided to protrude toward the second valve body (402) from the other parts of the first valve body (401), The second valve body (402) includes a second protrusion (404), The second protrusion (404) is provided to protrude toward the first valve body (401) more than the other parts of the second valve body (402), At least a portion of the first protrusion (403) and the second protrusion (404) are in contact with each other. The second protrusion (404) can restrict the position of the first protrusion (403) along the second direction, The second direction is perpendicular to the axial direction of the valve member (21), The electric valve (1) according to claim 5, characterized in that the second direction is perpendicular to the first direction.

7. The electric valve (1) includes a position limiting component (408) and a position limiting groove (409), The position limiting component (408) and the position limiting groove (409) are located on the opposite side of the first protrusion (403) and the second protrusion (404), At least a portion of the position limiting component (408) is located in the position limiting groove (409), The position limiting component (408) is capable of relatively limiting the position of the first protrusion (403) and the second protrusion (404) along the axial direction of the valve member (21). When the position-limiting groove (409) is located on the first protrusion (403), the position-limiting component (408) is fixedly connected to the second protrusion (404), or connected in such a way that its position is limited, or is an integral part of the structure. The electric valve (1) according to claim 6, characterized in that when the position limiting groove (409) is located on the second protrusion (404), the position limiting component (408) is fixedly connected to the first protrusion (403), connected in such a way that its position is limited, or has an integral structure with it.

8. The electric valve (1) according to claim 6, characterized in that the valve body (40) is located on the side of the first valve body (401) that abuts against the housing (10) and has a weight-reducing groove (407) that penetrates along the second direction.

9. The electric valve (1) includes a stator unit (20) and a control unit (1a), The stator unit (20) is located in the housing (10), The electric valve (1) has a valve port (211), The stator unit (20) is capable of controlling the operation of at least a portion of the valve member (21) to adjust the opening degree of the valve port (211), The stator unit (20) is electrically and / or signally connected to the control unit (1a), The electric valve (1) according to any one of claims 4 to 8, characterized in that the first sensing device (50) is electrically and / or signally connected to the control unit (1a).

10. The electric valve (1) according to claim 9 is characterized in that it includes a first sealing component (51) on one side which abuts against the housing (10) and on the other side which abuts against the first sensing device (50).

11. The electric valve (1) further includes a position detection device (60) and an electrical connection part (70), The electrical connection portion (70) includes a first connecting component (71) and a second connecting component (72). The first connecting component (71) is electrically connected to the electrical control unit (30), The second connecting component (72) is electrically connected to the position detection device (60) and the first connecting component (71). The second connecting component (72) is fixedly connected to the first connecting component (71) or connected in such a way that its position is restricted. The first connecting component (71) includes the first fixing portion (711), The housing (10) includes a first engaging portion (101), The electric valve (1) according to claim 9, characterized in that the first fixing portion (711) is fixedly connected to or positioned to the first engaging portion (101).

12. An assembly method used to assemble an electric valve (1), The electric valve (1) includes a housing (10), an electrical control unit (30), a valve member (21), a valve body (40), a first sensing device (50), and a control unit (1a). The electrical control unit (30) is located in the first chamber (15) of the housing (10). The valve body (40) includes a separate first valve body (401) and a second valve body (402), The second valve body (402) includes a first opening (42), The assembly steps are as follows: a part of the first sensing device (50) is placed in the mounting chamber (423) of the first opening (42); the first sensing device (50) is electrically connected to the electrical control unit (30) and / or signalically connected; the first sensing device (50) and the second valve body (402) are fixed together; a part of the valve member (21) is fitted into the chamber of the housing (10); the first valve body (401) is fitted onto the valve member (21) along the axial direction of the valve member (21); and when fixing the positions of the housing (10) and the first valve body (401), the valve member (21) is pressed against the first valve body (401) and the housing (10). The sensor side of the second valve body (402) to which the first sensing device (50) is attached faces the housing (10). An assembly method characterized in that, when assembling the second valve body (402) and housing (10), a part of the first sensing device (50) is located in the housing (10), and the first sensing device (50) is electrically and / or signally connected to the control unit (1a).

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