Valve device, assembling method of valve device and manufacturing method of valve device

Abstract

The valve device comprises a valve body assembly and a valve element assembly, the valve body assembly is provided with a containing cavity, and at least part of the valve element assembly is located in the containing cavity; the valve element assembly comprises a shaft part and a body part, the body part is provided with a hole, and the hole extends in the axial direction of the valve device. The shaft part and the main body part are separately arranged, one part of the shaft part is located in the hole, and the peripheral part of the shaft part is in contact or clearance fit with the wall forming the hole in the radial direction of the valve device; the valve element assembly is provided with a communication channel, one part of the communication channel is located on the main body part, and the other part of the communication channel is located on the shaft part. The main body part and the shaft part can be respectively mounted in the valve body assembly, so that the mounting difficulty of the valve core assembly is reduced, and the universality of the valve core assembly is improved.

Description

Technical Field

[0001] The present invention relates to the field of fluid control technology, and in particular to a valve device, an assembling method and a manufacturing method of the valve device. Background Art

[0002] The valve device can be used in a thermal management system to control the opening or closing or switching of a fluid channel. The valve device includes a valve body and a valve core, and the valve core includes a valve ball and a shaft protruding from at least one end of the valve ball. The valve ball and the shaft are an integral structure, and the valve core can be radially limited by the shaft. However, the axial dimension of such a valve core is large, so when the valve core is installed in the valve body, it will increase the difficulty of installing the valve core or require a larger valve core installation space. Summary of the invention

[0003] One object of the present application is to provide a valve device, an assembly method of the valve device, and a manufacturing method thereof, which can reduce the difficulty of installing a valve core.

[0004] One embodiment of the present application provides a valve device, including a valve body assembly and a valve core assembly, the valve body assembly having a accommodating cavity, at least a portion of the valve core assembly being located in the accommodating cavity; the valve core assembly comprising a shaft portion and a main body portion, the main body portion having a hole, the hole extending along the axial direction of the valve device; the shaft portion and the main body portion are separately arranged, a portion of the shaft portion is located in the hole, and along the radial direction of the valve device, the outer periphery of the shaft portion is in contact with or gap-fitted with a wall forming the hole; the valve core assembly has a connecting passage, a portion of which is located on the shaft portion.

[0005] One embodiment of the present application provides an assembly method of a valve device, which comprises: installing a main body into a valve body assembly along a radial direction of the valve device; installing a shaft into the valve body assembly along an axial direction of the valve device; placing a portion of the shaft in a hole of the main body, wherein the shaft is separately arranged from the main body, and a portion of a connecting passage is located on the shaft.

[0006] One embodiment of the present application provides a method for manufacturing a valve device, comprising: molding a main body; molding a shaft; placing a portion of the shaft in a hole of the main body, wherein the shaft is separately arranged from the main body, and a portion of a connecting passage is located on the shaft.

[0007] In the valve device, assembly method and manufacturing method of the valve device provided in the embodiments of the present application, the shaft portion and the main body portion are separately arranged. Compared with the solution in which the shaft portion and the main body portion are integrally structured, the main body portion and the shaft portion can be separately installed in the valve body assembly, thereby reducing the difficulty of installing the valve core assembly and improving the versatility of the valve core assembly. In addition, a part of the communication channel is located in the shaft portion, which can make more full use of the space in the shaft portion and reduce flow resistance compared with a solid shaft portion. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 A schematic diagram of a three-dimensional structure of an embodiment of a valve device of the present application is shown;

[0009] Figure 2 Shows Figure 1 The valve device shown is a schematic structural diagram at an angle;

[0010] Figure 3 Shows Figure 2 The cross-sectional structure diagram of the valve device shown along line AA;

[0011] Figure 4 Shows Figure 1 The structure schematic diagram of the valve device shown is another angle;

[0012] Figure 5 Shows Figure 4 The three-dimensional cross-sectional structure diagram of the valve device shown along line BB;

[0013] Figure 6 Shows Figure 3 an exploded schematic diagram of a portion of the valve assembly shown;

[0014] Figure 7 Shows Figure 3 An exploded cross-sectional view of a portion of the valve device shown;

[0015] Figure 8 Shows Figure 3 A schematic three-dimensional cross-sectional structural diagram of an output component of the valve device shown;

[0016] Fig. 9 A schematic diagram of the structure of the valve core assembly at an angle is shown;

[0017] Fig.10 Shows Figure 2 The cross-sectional structure diagram of the valve device along the CC line is shown, and the valve device is in the first working state at this time;

[0018] Fig.11 Shows Figure 2 The cross-sectional structure diagram of the valve device along the CC line is shown, and the valve device is in the second working state at this time;

[0019] Fig.12 A schematic diagram showing the assembly process of the valve core assembly of the valve device;

[0020] Fig.13 A cross-sectional structural schematic diagram of another embodiment of the valve device is shown;

[0021] Fig.14 A schematic diagram showing a three-dimensional structure of another embodiment of a valve device is shown;

[0022] Fig.15 Shows Fig.14 A schematic cross-sectional structural diagram of the valve device shown.

[0023] Reference numerals:

[0024] 100, 200, valve device; 1, valve body assembly; 10, accommodating chamber; 101, interlayer chamber; 111, third through hole; 112, step portion; 113, sealing ring; 11, valve body; 12, cover; 14, first channel; 141, first communication port; 15, second channel; 151, second communication port; 16, third channel; 161, third communication port; 17, fourth channel; 2, valve core assembly; 21, shaft portion; 211, first channel; 212, first section; 214, flange portion; 2121, step surface portion; 2122, first matching wall; 215, second limiting groove; 216, second side wall; 217, second bottom wall; 213, second 214, the third section; 2141, the first through hole; 22, the main body; 221, the hole; 222, the second channel; 223, the first limit groove; 224, the first side wall; 225, the first bottom wall; 226, the expansion groove; 23, the connecting channel; 231, the first opening; 232, the second opening; 233, the third opening; 234, the fourth opening; 235, the fifth opening; 3, the elastic component; 4, the cushion component; 41, the second through hole; 5, the valve seat assembly; 6, the drive assembly; 61, the output component; 62, the groove; 63, the second matching wall; 7, the sensor; 8, the control assembly; 81, the stator; 82, the shell; 83, the electric control board; 9, the heat exchanger; DETAILED DESCRIPTION

[0025] The embodiments are described in detail below with reference to the accompanying drawings.

[0026] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application is further described in detail below in conjunction with the accompanying drawings and specific embodiments. In this article, relational terms such as "first" and "second" are only used to distinguish one component with the same name from another, and do not necessarily require or imply that there is any such actual relationship or order between these components. It should be noted that the "limited connection" in this application includes detachable connections, such as threaded connections, snap connections, etc., and the "fixed connection" in this application includes non-detachable connections, such as welding, bonding, vulcanization fixation, riveting, insert injection molding, etc.

[0027] Figures 1 to 11 A valve device 100 is shown, which includes a valve body assembly 1, a valve core assembly 2, a drive assembly 6, and a control assembly 8. The control assembly 8 includes a stator 81. The valve body assembly 1 has an accommodating cavity 10. At least part of the valve core assembly 2 is located in the accommodating cavity 10. The valve core assembly 2 can rotate under the drive of the drive assembly 6.

[0028] The axial direction of the valve device 100 is defined as follows: Figure 3 The rotation axis of the valve core assembly 2 is defined as H. Figure 3 As shown by C1 , the valve core assembly 2 can rotate around the rotation axis, the axial direction of the valve core assembly 2 is parallel to the extension direction of the rotation axis of the valve core assembly 2 , and the central axis of the valve device 100 coincides with the rotation axis of the valve core assembly 2 .

[0029] like Figure 3 and Figure 7 As shown, the valve core assembly 2 includes a shaft portion 21 and a main body portion 22, and the main body portion 22 and at least part of the shaft portion 21 are located in the accommodating chamber 10. The shaft portion 21 and the main body portion 22 are separately arranged, and the main body portion 22 has a hole 221, and the hole 221 extends along the axial direction of the valve device 100. A part of the shaft portion 21 is located in the hole 221. Along the radial direction of the valve device 100, the outer periphery of the shaft portion 21 is in contact with or has a clearance fit with the wall forming the hole 221. The valve core assembly 2 has a communication channel 23, a part of the communication channel 23 is located in the main body portion 22, and another part of the communication channel 23 is located in the shaft portion 21. The shaft portion 21 and the main body portion 22 are separately arranged, as shown in FIG. Fig.12 As shown, during the installation of the valve core assembly 2, the main body 22 and the shaft 21 can be respectively installed in the valve body assembly 11, which can reduce the installation space required for the valve core assembly 2 and reduce the restrictions on the installation of the valve core assembly 2 caused by the structure of the valve body assembly 11, or in other words, can reduce the difficulty of installing the valve core assembly 2 and improve the versatility of the valve core assembly 2. In addition, a part of the communication channel 23 is located in the shaft 21, which can fully utilize the space in the shaft 21 and reduce the flow resistance compared to the solid shaft 21.

[0030] In addition, the main body 22 and the shaft 21 are separately arranged, so that the main body 22 and the shaft 21 can be processed and formed separately, which can reduce the processing difficulty of the valve core assembly 2. Specifically, the outer periphery of the main body 22 is spherical, and the main body 22 can be formed into a solid whole sphere first, which is convenient for grinding the surface of the main body 22, and then the main body 22 is cut. The outer periphery of the shaft 21 is cylindrical as a whole, which is convenient for lathing and can reduce the processing difficulty of the shaft 21. In other embodiments, the outer periphery of the main body 22 can be cylindrical or conical, and the outer periphery of the shaft 21 can be prismatic or conical. It should be noted that in the present application, "the hole 221 extends along the axial direction of the valve device 100" is not limited to the embodiment in which the cross-sectional shape of the hole 221 remains unchanged from one end to the other, and also includes the case where the hole 221 is divided into at least two sections and each section has a different cross-sectional size.

[0031] like Figure 3-Figure 7 As shown, the valve device 100 includes a drive assembly 6, and along the axial direction of the valve device 100, the communication channel 23 has a first opening 231 at one end of the shaft portion 21 relatively far from the drive assembly 6, and the communication channel 23 has a second opening 232 at the outer periphery of the main body 22, and the shaft portion 21 is transmission-connected with the main body 22, and one end of the shaft portion 21 relatively close to the drive assembly 6 is transmission-connected with the drive assembly 6. In this way, one end of the shaft portion 21 is used for transmission connection with the drive assembly 6, and the other end of the shaft portion 21 is used for the circulation of the fluid, which can make fuller use of the structure of the shaft portion 21, reduce the volume of the shaft portion 21 or the design difficulty, and reduce the flow resistance compared to the solution in which the drive assembly 6 and the second opening 232 are located on the same side. In addition, in the case where the radial dimension of the shaft portion 21 is large, the drive assembly 6 is transmission-connected with the shaft portion 21, and compared with the transmission connection between the drive assembly 6 and the main body 22, the radial dimension of the drive assembly 6 at the transmission position can be relatively reduced. In this embodiment, the drive assembly 6 includes a magnetic rotor, a transmission gear, etc. In other embodiments, the drive assembly 6 may also be driven by other driving modes such as cylinder drive, manual drive, etc. The shaft portion 21 is slidably matched with the valve body assembly 1, and the drive assembly 6 drives the shaft portion 21 to rotate, thereby driving the main body portion 22 to rotate.

[0032] like Fig.13 As shown, in another embodiment, along the axial direction of the valve device 100 , one end of the main body 22 relatively close to the drive assembly 6 is transmission-connected to the drive assembly 6 , and the shaft 21 is not directly transmission-connected to the drive assembly 6 .

[0033] like Figure 3As shown, in the present embodiment, the valve body assembly 1 has a third through hole 111. Along the axial direction of the valve device 100, one side of the third through hole 111 has an opening on the wall forming the accommodating chamber 10, and the other side has an opening on the outer surface of the valve body assembly 1. Along the axial direction of the valve device 100, the third through hole 111 and the drive assembly 6 are located on the same side of the main body 22, so that a part of the drive assembly 6 can extend from the third through hole 111 into the accommodating chamber 10 and be transmission-connected to the shaft portion 21.

[0034] A first plane is defined, and the first plane is perpendicular to the axial direction of the valve device 100. Along the axial direction of the valve device 100, the projection of the shaft portion 21 on the first plane is located inside the projection of the third through hole 111 on the first plane. The shaft portion 21 can be inserted into the accommodating cavity 10 from the third through hole 111. In this embodiment, along the axial direction of the valve device 100, the projection of the third through hole 111 on the first plane is located inside the projection of the main body portion 22 on the first plane. Compared with the solution in which the third through hole 111 is larger than the radial dimension of the main body portion 22, the third through hole 111 does not occupy too much radial space, and more radial space can be reserved for the axial sealing between the drive assembly 6 and the valve body assembly 1, which can indirectly reduce the radial dimension of the drive assembly 6. Specifically, the valve body assembly 1 includes a valve body and a cover 12, and the valve body and the cover 12 together form the accommodating cavity 10. The valve body is an integral structure, and the third through hole 111 is located in the valve body. The radial side of the valve body has an opening, and the opening can be used to install the main body portion 22. The valve body includes a step portion 112. Along the axial direction of the valve device 100, the step portion 112 faces away from the main body portion 22. The step portion 112 is located on the outer periphery of the third through hole 111. Along the axial direction of the valve device 100, the sealing ring 113 is located between the drive assembly 6 and the step portion 112, so that the drive assembly 6 and the step portion 112 are sealed.

[0035] like Figure 5-Figure 7As shown, the shaft portion 21 has a first hole 211, which is a part of the communication channel 23. The first hole 211 extends along the axial direction of the valve device 100, which is convenient for processing and allows the diameter of the first hole 211 to be set larger, making fuller use of the internal space of the shaft portion 21 and reducing the flow resistance. The first hole 211 has a third opening 233 at the outer periphery of the shaft portion 21, and the first hole 211 has a first opening 231 at an end of the shaft portion 21 that is relatively far away from the drive assembly 6. The main body 22 has a second hole 222, which is a part of the communication channel 23. The second hole 222 extends along the radial direction of the valve device 100, so that the diameter of the second hole 222 can be set larger and reduce the flow resistance. The second hole 222 has a fourth opening 234 on the wall forming the hole 221, and the third opening 233 is arranged opposite to and communicates with the fourth opening 234. The second hole 222 has a second opening 232 at the outer periphery of the main body 22. In this embodiment, the third opening 233 and the fourth opening 234 are the same or substantially the same in size, and the edge of the third opening 233 is aligned with the edge of the fourth opening 234 , which can reduce fluid resistance.

[0036] In this embodiment, the hole 221 is a through hole and the hole 221 passes through the main body 22 along the axial direction of the valve device 100. The shaft 21 includes a first section 212, a second section 213 and a third section 214. The second section 213 is located in the hole 221, and the third section 214 is not located in the hole 221. The first section 212 is not located in the hole 221. Along the axial direction of the valve device 100, the first section 212 is close to the drive assembly 6 relative to the second section 213, and the first section 212 is in transmission connection with the drive assembly 6. Along the axial direction of the valve device 100, the third section 214 is away from the drive assembly 6 relative to the second section 213. The outer periphery of the third section 214 abuts against or is provided with a gap with the valve body assembly 1, and the outer periphery of the third section 214 is in sliding cooperation with the valve body assembly 1. In this way, along the axial direction of the valve device 100, the second section 213 extends from one end of the main body 22 to the other end, so that both ends of the main body 22 in the axial direction are radially limited by the same shaft 21, thereby making the coaxiality of the two ends of the main body 22 better. In other embodiments, the hole 221 may not penetrate the main body 22 , and the hole 221 only has an opening at one axial end of the main body 22 .

[0037] In this embodiment, the outer periphery of the second section 213 extends along the axial direction of the valve device 100, and the outer periphery of the second section 213 cooperates with the wall gap forming the hole 221, so that the shaft portion 21 and the main body portion 22 can slide relative to each other along the axial direction of the valve device 100, making it more difficult for the axial movement of the shaft portion 21 to be transmitted to the main body portion 22, thereby reducing the vibration of the main body portion 22 and facilitating the shaft portion 21 to pass through the main body portion 22 during installation.

[0038] like Figure 3As shown, the valve device 100 includes a valve seat assembly 5. Along the radial direction of the valve device 100, one side of the valve seat assembly 5 abuts against the outer periphery of the main body 22, and the other side abuts against the valve body assembly 1, and the valve seat can play a sealing role. In this embodiment, along the radial direction of the valve device 100, a part of the shaft portion 21 is in contact with or has a clearance fit with the valve body assembly 1, so that the valve body assembly 1 radially limits the shaft portion 21, and the shaft portion 21 radially limits the main body 22, so that when the main body 22 is subjected to unilateral pressure in the radial direction or is subjected to uneven force load in the radial direction, the radial offset of the main body 22 is smaller, thereby reducing the squeezing of the main body 22 on the valve seat assembly 5, and reducing the risk of damage to the valve seat assembly 5.

[0039] Specifically, along the axial direction of the valve device 100, the projection of the third section 214 on the first plane is located inside the projection of the second section 213 on the first plane, which can facilitate the third section 214 to be inserted into the hole 221 from one side of the main body 22 and then pass out from the other side of the main body 22. In this embodiment, along the radial direction of the valve device 100, the second section 213 and the third section 214 have the same size, which can make the diameter of the first channel 211 more uniform.

[0040] like Figure 3-Figure 7 As shown, the drive assembly 6 includes an output component 61, which is in driving connection with the first section 212. The valve device 100 includes an elastic component 3. Along the axial direction of the valve device 100, one side of the elastic component 3 abuts against the output component 61, and the other side of the elastic component 3 abuts against the first section 212. Along the axial direction of the valve device 100, the first section 212 abuts against the main body 22. By providing the elastic component 3, the movement of the shaft 21 under vibration conditions can be reduced.

[0041] The main body 22 has a first limiting groove 223, and along the axial direction of the valve device 100, it is characterized in that the main body 22 has a first limiting groove 223, and along the axial direction of the valve device 100, the first limiting groove 223 is recessed at one end of the main body 22 relatively close to the driving assembly 6, along the radial direction of the valve device 100, a part of the first section 212 protrudes outward compared to the second section 213, at least part of the first section 212 is located in the first limiting groove 223, and the wall forming the first limiting groove 223 includes a first side wall 224, and the first section 212 includes a first matching wall 2122, and along the radial direction of the valve device 100, the first matching wall 2122 is recessed in the outer periphery of the first section 212, and the shape of the first matching wall 2122 is complementary to the shape of the first side wall 224, and the first matching wall 2122 abuts or has a clearance fit with the first side wall 224. Because the first matching wall 2122 abuts or has a clearance fit with the first side wall 224, the first section 212 is transmission-connected with the main body 22. In this embodiment, the first side wall 224 is parallel to the axial direction of the valve device 100, and the first limiting groove 223 extends along the radial direction of the valve device 100. The structure is simple and easy to process.

[0042] The first section 212 includes a step surface 2121, and along the axial direction of the valve device 100, the step surface 2121 faces away from the drive assembly 6, and the wall forming the first limiting groove 223 includes a first bottom wall 225, and along the axial direction of the valve device 100, the step surface 2121 abuts against the first bottom wall 225, so that the shaft portion 21 and the main body portion 22 are axially positioned, and the structure of the first limiting groove 223 is more fully utilized. Specifically, the hole 221 has an opening in the first bottom wall 225, and along the axial direction of the valve device 100, the projection of the first matching wall 2122 on the first plane is substantially tangent to the projection of the second section 213 on the first plane.

[0043] The first section 212 includes a second limiting groove 215, which extends in the radial direction of the valve device 100. The second limiting groove 215 is recessed in one end of the first section 212 relatively close to the drive assembly 6. At least part of the output component 61 is located in the second limiting groove 215. The output component 61 includes a second matching wall 63, which is recessed in the outer periphery of the output component 61 in the radial direction of the valve device 100. The wall forming the second limiting groove 215 includes a second side wall 216. The shape of the second matching wall 63 is complementary to the shape of the second side wall 216. The second matching wall 63 abuts or has a clearance fit with the second side wall 216. Since the second matching wall 63 abuts or has a clearance fit with the second side wall 216, the output component 61 is connected to the first section 212 in a transmission manner. In this embodiment, the second side wall 216 is parallel to the axial direction of the valve device 100, and the second limiting groove 215 extends in the radial direction of the valve device 100. The structure is simple and easy to process.

[0044] like Figure 8 As shown, the output component 61 has a groove 62, which is recessed at one end of the output component 61 relatively close to the main body 22, and the groove 62 extends along the axial direction of the valve device 100, and at least part of the elastic component 3 is located in the groove 62. At least part of the elastic component 3 is located in the groove 62 of the output component 61, which can make the installation space of the elastic component 3 smaller. Specifically, the elastic component 3 is a coil spring. In other embodiments, the elastic component 3 can be located on the periphery of the output component 61.

[0045] like Figure 5-Figure 7As shown, the third section 214 has a first through hole 2141, one end of the first through hole 2141 is connected to the communication channel 23, and the other end of the first through hole 2141 has a fifth opening 235 at the outer periphery of the third section 214. The portion of the third section 214 that slides with the valve body assembly 1 is defined as a sliding surface. Along the axial direction of the valve device 100, at least part of the fifth opening 235 is located between the main body 22 and the sliding surface. It should be noted that the accommodating chamber 10 includes an interlayer chamber 101, which is defined as being surrounded by the outer periphery of the valve body assembly 1 and the wall forming the accommodating chamber 10. Through the first through hole 2141, the communication channel 23 can be connected to the interlayer chamber 101, so that when the fluid pressure in the communication channel 23 is greater than that in the interlayer chamber 101, the fluid pressures of the communication channel 23 and the interlayer chamber 101 can be balanced more quickly, thereby reducing the occurrence of "pressure holding". For example, if the pressure in the connecting channel 23 is greater than the pressure in the interlayer cavity 101, the valve core assembly 2 will be pushed toward the drive assembly 6 by the fluid pressure, and the third section 214 will expand radially along the valve device 100, thereby increasing the friction between the third section 214 and the valve body assembly 1.

[0046] The valve body assembly 1 includes a cushion component 4. Along the axial direction of the valve device 100, the drive component 6 and the cushion component 4 are respectively located on both sides of the main body 22. The cushion component 4 has a second through hole 41. The second through hole 41 extends along the axial direction of the valve device 100. At least part of the third section 214 is located in the second through hole 41. The outer periphery of the third section 214 is slidably matched with the wall forming the second through hole 41. The material of the cushion component 4 includes one or more of fluoroplastics, polyetheretherketone, and nylon. The cushion component 4 can reduce the friction between the shaft 21 and the valve body assembly 1, thereby reducing the torque required to drive the valve core assembly 2.

[0047] like Figure 5 As shown, along the axial direction of the valve device 100, the third section 214 is arranged with a gap with the valve body 11 relatively far from the end of the main body 22, which can prevent the shaft 21 from directly rubbing against the valve body. In this embodiment, the valve body 11 is made of metal, and the shaft 21 is made of metal. The above arrangement can prevent direct friction between metals, thereby reducing wear.

[0048] like Figure 3 , Figure 5 , Fig.10 , Fig.11As shown, the valve body assembly 1 has a first channel 14, a second channel 15, and a third channel 16. The first channel 14 has a first connecting port 141 in the wall forming the accommodating chamber 10, the second channel 15 has a second connecting port 151 in the wall forming the accommodating chamber 10, and the third channel 16 is connected to the first opening 231. Along the radial direction of the valve device 100, the first connecting port 141 is located on one side of the main body 22, and the second connecting port 151 is located on the other side of the main body 22. By controlling the valve core assembly 2, the second opening 232 can be selectively connected to one of the first connecting port 141 and the second connecting port 151.

[0049] In this embodiment, there are two valve seat assemblies 5, one of which surrounds the first connecting port 141, and the other surrounds the second connecting port 151. Along the radial direction of the valve device 100, the two valve seat assemblies 5 are respectively located on both sides of the main body 22, so that the valve core assembly 2 can be subjected to more uniform force in the radial direction.

[0050] The valve body assembly 1 further has a fourth channel 17, and the second channel 15 has an opening in the wall forming the fourth channel 17. The valve device 100 includes a sensor 7, a part of which is located in the fourth channel 17, and the sensor 7 can sense the parameters of the fluid in the fourth channel 17. In this embodiment, the sensor 7 is a temperature and pressure sensor, and in other embodiments, the sensor 7 can be a temperature sensor or a pressure sensor.

[0051] The valve device 100 includes a control assembly 8, which includes a housing 82, a stator 81, and an electric control board 83, at least part of which is sleeved on the outer periphery of the drive assembly 6. The stator 81 is electrically connected and / or signal-connected to the electric control board 83, the sensor 7 is electrically connected and / or signal-connected to the electric control board 83, the electric control board 83 is located in the housing 82, and the electric control board 83 can be electrically connected and / or signal-connected to the vehicle bus.

[0052] like Fig.10 , Fig.11 As shown, after the valve device 100 is connected to the thermal management system, the fourth channel 17 is connected to the outlet of the heat exchanger 9, and the first channel 14 is connected to the inlet of the heat exchanger 9. The heat exchanger 9 can be a plate heat exchanger 9 or a microchannel heat exchanger 9.

[0053] The valve device 100 includes at least a first operating state and a second operating state. Figure 5 , Fig.10 , Fig.11 The black one-way arrows in illustrative figures show the approximate flow path of the fluid in the valve device 100 .

[0054] In the first working condition, the second opening 232 of the valve core assembly 2 is connected to the second communication port 151, the valve core assembly 2 cuts off the passage between the accommodating chamber 10 and the first communication port 141, and the communication channel 23 is not connected to the first communication port 141. At this time, the third channel 16 is connected to the second channel 15 through the communication channel 23, and the refrigerant does not flow through the heat exchanger 9.

[0055] In the second working condition, the second opening 232 of the valve core assembly 2 is connected to the first communication port 141, the valve core assembly 2 cuts off the passage between the accommodating chamber 10 and the second communication port 151, and the communication channel 23 is not connected to the second communication port 151. At this time, the valve core assembly 2 can adjust the refrigerant flow entering the heat exchanger 9, and the sensor 7 can measure the temperature and pressure of the refrigerant flowing out of the heat exchanger 9. After measuring the temperature and pressure, the sensor 7 can transmit the information to the vehicle-mounted processor or directly transmit it to the processor included in the electric control board 83. The processor can adjust the rotation angle of the valve core assembly 2 according to the information of the sensor 7, thereby adjusting the refrigerant flow entering the heat exchanger 9.

[0056] Therefore, at least two working conditions can be realized through the valve device 100, which has high integration, small size, and multiple functions. It can be used in refrigerant systems and coolant systems, and is particularly suitable for the automotive field with high volume requirements.

[0057] like Fig. 9 , Fig.10 As shown, the main body 22 has an expansion groove 226, which is recessed in the outer periphery of the main body 22. The expansion groove 226 extends along the circumference of the main body 22. One end of the expansion groove 226 is connected to the connecting channel 23. When the refrigerant passes through the expansion groove 226, a throttling expansion effect can be produced. By controlling the valve core assembly 2, the valve device 100 can realize a flow regulation function, and can also realize a throttling expansion function.

[0058] like Figure 3 and Figure 5 As shown, the third channel 16 has a third communication port 161. Along the axial direction of the valve device 100, the third communication port 161 is farther from the main body 22 than the first opening 231. The third communication port 161 is arranged opposite to the first opening 231, and the third communication port 161 is communicated with the first opening 231. Compared with the solution of arranging the third communication port 161 on one side of the radial direction of the main body 22, the flow resistance between the third communication port 161 and the first opening 231 can be reduced, thereby reducing the flow resistance of the valve device 100.

[0059] like Fig.12 As shown, the assembly method of the valve device 100 at least includes:

[0060] The main body 22 is installed into the valve body assembly 1 along the radial direction of the valve device 100, so that the hole 221 is substantially coaxially arranged with the third through hole 111;

[0061] Install the shaft portion 21 into the valve body assembly 1 along the axial direction of the valve device 100;

[0062] A portion of the shaft portion 21 is placed in the hole 221 of the main body 22. Specifically, in this step, the shaft portion 21 first passes through the third through hole 111, then the shaft portion 21 enters the hole 221, and then a portion of the shaft portion 21 is inserted into the cushion component 4 until the first section 212 of the shaft portion 21 abuts against the main body 22, completing the entire assembly process of the shaft portion 21. In other embodiments, the shaft portion 21 may be first installed in the valve body assembly 1, and then the main body 22 is installed in the valve body assembly 1, and then a portion of the shaft portion 21 is placed in the hole 221 of the main body 22.

[0063] First, the main body 22 is inserted into the accommodating cavity 10 along the radial direction of the valve device 100, and then the shaft portion 21 is inserted into the accommodating cavity 10 along the axial direction and passes through the hole 221. This can reduce the installation space required for the valve core assembly 2 and reduce the restrictions on the installation of the valve core assembly 2 caused by the structure of the valve body assembly 11. In other words, it can reduce the difficulty of installing the valve core assembly 2 and improve the versatility of the valve core assembly 2.

[0064] like Figure 14-15 As shown, in another embodiment of the valve device, the valve device 200 includes Figure 1-Figure 12 The valve core assembly 2, the elastic component 3 and the driving assembly 6 are the same or similar to the embodiment shown, and the valve core assembly 2 can rotate under the drive of the driving assembly 6;

[0065] The valve device 200 is a three-way valve as a whole. The valve body assembly 1 has a first channel 14 , a second channel 15 , and a third channel 16 . The first channel 14 and the second channel 15 both extend in the radial direction of the valve device 200 , and the third channel 16 extends in the axial direction of the valve device 200 .

[0066] 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), comprising a valve body assembly (1) and a valve core assembly (2), wherein the valve body assembly (1) has a receiving cavity (10), and at least a portion of the valve core assembly (2) is located in the receiving cavity (10); The valve core assembly (2) comprises a shaft portion (21) and a main body portion (22), wherein the main body portion (22) has a hole (221), and the hole (221) extends along the axial direction of the valve device (100); The shaft portion (21) and the main body portion (22) are separately provided, a portion of the shaft portion (21) is located in the hole (221), and along the radial direction of the valve device (100), the outer periphery of the shaft portion (21) is in contact with or has a clearance fit with a wall forming the hole (221); The valve core assembly (2) has a communication channel (23), and a portion of the communication channel (23) is located on the shaft portion (21).

2. The valve device according to claim 1, characterized in that The valve device (100) comprises a drive assembly (6); along the axial direction of the valve device (100), the communication channel (23) has a first opening (231) at an end of the shaft portion (21) relatively far from the drive assembly (6); a portion of the communication channel (23) is located in the main body portion (22); and the communication channel (23) has a second opening (232) at the outer periphery of the main body portion (22); The shaft portion (21) is in driving connection with the main body portion (22); along the axial direction of the valve device (100), an end portion of the shaft portion (21) relatively close to the drive assembly (6) is in driving connection with the drive assembly (6); Alternatively, along the axial direction of the valve device (100), an end portion of the main body (22) relatively close to the drive assembly (6) is drivingly connected to the drive assembly (6).

3. The valve device according to claim 2, characterized in that The shaft portion (21) has a first hole (211), the first hole (211) is a part of the communication channel (23), the first hole (211) extends along the axial direction of the valve device (100), and the first hole (211) has a third opening (233) on the outer periphery of the shaft portion (21); The main body (22) has a second hole (222), which is a part of the connecting channel (23). The second hole (222) extends along the radial direction of the valve device (100). The second hole (222) has a fourth opening (234) in the wall forming the hole (221). The third opening (233) is arranged opposite to and connected to the fourth opening (234), and the edge of the third opening (233) is aligned with the edge of the fourth opening (234).

4. The valve device according to claim 3, characterized in that The shaft portion (21) comprises a first section (212), a second section (213) and a third section (214); the second section (213) is located in the hole (221); the hole (221) is a through hole and the hole (221) passes through the main body (22) along the axial direction of the valve device (100); along the axial direction of the valve device (100), the first section (212) is closer to the drive assembly (6) relative to the second section (213); the first section (212) The third section (214) is transmission-connected to the driving assembly (6); along the axial direction of the valve device (100), the third section (214) is away from the driving assembly (6) relative to the second section (213), and the third section (214) is not located in the hole (221); along the radial direction of the valve device (100), the outer periphery of the third section (214) is in contact with or spaced from the valve body assembly (1), and the outer periphery of the third section (214) is in sliding cooperation with the valve body assembly (1).

5. The valve device according to claim 4, characterized in that The main body (22) has a first limiting groove (223), and along the axial direction of the valve device (100), the first limiting groove (223) is recessed at an end of the main body (22) relatively close to the drive assembly (6); along the radial direction of the valve device (100), a portion of the first section (212) protrudes outwards compared to the second section (213), and at least a portion of the first section (212) is located in the first limiting groove (223); The wall forming the first limiting groove (223) includes a first side wall (224), and the first section (212) includes a first matching wall (2122). Along the radial direction of the valve device (100), the first matching wall (2122) is recessed in the outer periphery of the first section (212), and the shape of the first matching wall (2122) is complementary to the shape of the first side wall (224), and the first matching wall (2122) is in abutment or clearance fit with the first side wall (224).

6. The valve device according to claim 5, characterized in that The driving assembly (6) comprises an output component (61), and the output component (61) is drivingly connected to the first section (212); the valve device (100) comprises an elastic component (3), and along the axial direction of the valve device (100), one side of the elastic component (3) abuts against the output component (61), and the other side of the elastic component (3) abuts against the first section (212); along the axial direction of the valve device (100), the first section (212) abuts against the main body (22).

7. The valve device according to claim 6, characterized in that The first section (212) includes a step surface portion (2121), and along the axial direction of the valve device (100), the step surface portion (2121) faces away from the drive assembly (6); the wall forming the first limiting groove (223) includes a first bottom wall (225), and along the axial direction of the valve device (100), the step surface portion (2121) abuts against the first bottom wall (225).

8. The valve device according to claim 6, characterized in that The first section (212) comprises a second limiting groove (215), the second limiting groove (215) extending in the radial direction of the valve device (100), and the second limiting groove (215) is recessed at an end of the first section (212) relatively close to the driving assembly (6); At least part of the output component (61) is located in the second limiting groove (215), and the output component (61) includes a second matching wall (63), and along the radial direction of the valve device (100), the second matching wall (63) is recessed in the outer periphery of the output component (61); the wall forming the second limiting groove (215) includes a second side wall (216), the shape of the second matching wall (63) is complementary to the shape of the second side wall (216), and the second matching wall (63) is in abutment with or clearance fit with the second side wall (216); The output component (61) has a groove (62), the groove (62) is recessed at an end portion of the output component (61) relatively close to the main body (22), the groove (62) extends along the axial direction of the valve device (100), and at least part of the elastic component (3) is located in the groove (62); Alternatively, the elastic component (3) is located on the outer periphery of the output component (61).

9. The valve device according to claim 4, characterized in that The third section (214) has a first through hole (2141), one end of which is connected to the connecting channel (23), and the other end of which is provided with a fifth opening (235) on the outer periphery of the third section (214). The portion of the third section (214) that slides with the valve body assembly (1) is defined as a sliding surface, and along the axial direction of the valve device (100), at least part of the fifth opening (235) is located between the main body (22) and the sliding surface.

10. The valve device according to claim 4, characterized in that The valve body assembly (1) comprises a cushion component (4), and along the axial direction of the valve device (100), the drive assembly (6) and the cushion component (4) are respectively located on both sides of the main body (22), and the cushion component (4) has a second through hole (41), and the second through hole (41) extends along the axial direction of the valve device (100); At least part of the third section (214) is located in the second through hole (41), the outer periphery of the third section (214) is slidably matched with the wall forming the second through hole (41), and the material of the pad component (4) includes one or more of fluoroplastic, polyetheretherketone, and nylon.

11. The valve device according to any one of claims 2 to 10, characterized in that: The main body (22) and at least a portion of the shaft (21) are located in the accommodating cavity (10); The valve body assembly (1) has a third through hole (111), and along the axial direction of the valve device (100), the third through hole (111) and the drive assembly (6) are located on the same side of the main body (22); Along the axial direction of the valve device (100), one side of the third through hole (111) has an opening on the wall forming the accommodating cavity (10), and the other side of the third through hole (111) has an opening on the outer surface of the valve body assembly (1); A first plane is defined, wherein the first plane is perpendicular to the axial direction of the valve device (100), and along the axial direction of the valve device (100), the projection of the third through hole (111) on the first plane is located on the inner side of the projection of the main body (22) on the first plane; along the axial direction of the valve device (100), the projection of the shaft (21) on the first plane is located on the inner side of the projection of the third through hole (111) on the first plane.

12. The valve device according to claim 11, characterized in that The valve body assembly (1) comprises a first channel (14), a second channel (15), and a third channel (16); the first channel (14) comprises a first communication port (141) in a wall forming the accommodating chamber (10); the second channel (15) comprises a second communication port (151) in a wall forming the accommodating chamber (10); along the radial direction of the valve device (100), the first communication port (141) is located on one side of the main body (22), and the second communication port (151) is located on the other side of the main body (22); the third channel (16) comprises a third communication port (161); along the axial direction of the valve device (100), the third communication port (161) is farther from the main body (22) than the first opening (231); the third communication port (161) and the first opening (231) are arranged opposite to each other, and the third communication port (161) and the first opening (231) are communicated with each other; The valve body assembly (1) has a fourth channel (17), the second channel (15) has an opening in a wall forming the fourth channel (17), the valve device (100) comprises a sensor (7), a part of the sensor (7) is located in the fourth channel (17); The valve device (100) comprises a control component (8), the control component (8) comprises a housing (82), a stator (81) and an electric control board (83), the drive component (6) comprises a rotor, at least a portion of the stator (81) is sleeved on the outer periphery of the drive component (6); the stator (81) is electrically connected and / or signal-connected to the electric control board (83), the sensor (7) is electrically connected and / or signal-connected to the electric control board (83), the electric control board (83) is located in the housing (82), and the electric control board (83) can be electrically connected and / or signal-connected to a vehicle bus.

13. A method for assembling a valve device, the method comprising: Installing the main body (22) into the valve body assembly (1) along the radial direction of the valve device (100); Installing the shaft portion (21) into the valve body assembly (1) along the axial direction of the valve device (100); A portion of the shaft portion (21) is placed in a hole (221) of the main body portion (22), wherein the shaft portion (21) and the main body portion (22) are arranged separately, and a portion of the communication channel (23) is located on the shaft portion (21).

14. A method for manufacturing a valve device, the method comprising: A molded body portion (22); A molded shaft portion (21); A portion of the shaft portion (21) is placed in a hole (221) provided in the main body portion (22), wherein the shaft portion (21) and the main body portion (22) are provided separately, and a portion of the communication channel (23) is located in the shaft portion (21).

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