Valve device and manufacturing method thereof

Abstract

The invention discloses a valve device and a manufacturing method thereof.The valve device is provided with a valve cavity and comprises a valve body assembly, a valve element, a first limiting structure and a second limiting structure; at least part of the first limiting structure is located on the runner part or arranged in a limited mode with the runner part, the valve element can drive the first limiting structure to rotate, and at least part of the second limiting structure is located on the valve body assembly or arranged in a limited mode with the valve body assembly. At least part of at least one of the first limiting structure and the second limiting structure is located on the side, away from the bottom wall part, of the flow channel part, the second limiting structure comprises abutting faces, and the abutting faces are located at the two ends of the rotating stroke of the first limiting structure in the rotating direction of the valve element. Therefore, the structural size of the valve device is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of fluid control, in particular to a valve device and a manufacturing method thereof. BACKGROUND

[0002] Generally, the valve core assembly of the valve assembly is rotated under the driving of the driving member to achieve the fluid control of the valve assembly on multiple flow paths. The existing valve assembly has a large structure size, and how to reduce the structure size of the valve assembly is a technical problem to be solved. SUMMARY

[0003] The purpose of the present application is to provide a valve device and a manufacturing method thereof, which is beneficial to reduce the structure size of the valve assembly.

[0004] In one aspect, the present application provides a valve device, the valve device has a valve cavity, and the valve device comprises a valve body assembly, a valve core, a first limiting structure and a second limiting structure. The valve body assembly comprises a bottom wall part, the bottom wall part defines part of the wall of the valve cavity, at least part of the valve core is located in the valve cavity, the valve core comprises a flow passage part, and the flow passage part is arranged towards the bottom wall part. At least part of the first limiting structure is located in the flow passage part or is arranged in limiting mode with the flow passage part, the valve core can drive the first limiting structure to rotate, at least part of the second limiting structure is located in the valve body assembly or is arranged in limiting mode with the valve body assembly, and at least part of at least one of the first limiting structure and the second limiting structure is located on the side of the flow passage part away from the bottom wall part. The second limiting structure comprises an abutting surface, and along the rotation direction of the valve core, the abutting surface is located at both ends of the rotation stroke of the first limiting structure.

[0005] According to the valve device and the manufacturing method thereof provided by the present application, at least part of the first limiting structure is located in the flow passage part or is arranged in limiting mode with the flow passage part, so that the valve core can drive the first limiting structure to rotate, at least part of the second limiting structure is located in the valve body assembly or is arranged in limiting mode with the valve body assembly, so that the second limiting structure is fixedly arranged relative to the first limiting structure, the second limiting structure comprises an abutting surface, and along the rotation direction of the valve core, the abutting surface is located at both ends of the rotation stroke of the first limiting structure, so that the second limiting structure can limit the rotation position of the first limiting structure. In the present application, at least part of at least one of the first limiting structure and the second limiting structure is located on the side of the flow passage part away from the bottom wall part, compared with the case that the limiting structure of the valve core is arranged on the side of the flow passage part towards the bottom wall part, the limiting structure needs to avoid corresponding other structures, for example, the limiting structure needs to avoid the sealing structure, and the present application is beneficial to reduce the structure size of the valve device.

[0006] In another aspect, the present application provides a manufacturing method of a valve device, the method comprises:

[0007] The first valve body has a first hole penetrating through the inner surface of the first valve body; a valve core assembly is provided, which comprises a valve core and a first limiting structure, at least part of the first limiting structure is located in the valve core or the first limiting structure is arranged in limiting mode with the valve core; the valve core assembly is installed in the first valve body, so that part of the first limiting structure is arranged towards the first hole; a second limiting structure is assembled to the first hole, so that part of the second limiting structure is fixedly connected with the inner part of the first hole, and the other part of the second limiting structure protrudes from the first hole and is located between the first valve body and the valve core.

[0008] According to the manufacturing method of the valve device provided by the embodiment of the present application, the valve core assembly is installed in the first valve body, the valve core assembly comprises the first limiting structure, and after the second limiting structure is assembled to the first hole, the other part of the second limiting structure protrudes from the first hole and is located between the first valve body and the valve core, so that the first limiting structure is abutted with the second limiting structure during the rotation of the valve core, thereby limiting the rotation position of the valve core, and by arranging the first limiting structure towards the first hole and arranging the second limiting structure in limiting mode in the first hole, the other part of the second limiting structure is located between the first valve body and the valve core, which is beneficial to the structure size of the valve device manufactured by the manufacturing method of the valve device. BRIEF DESCRIPTION OF DRAWINGS

[0009] Figure 1 is a schematic diagram of the three-dimensional structure of the valve device provided by an embodiment of the present application;

[0010] Figure 2 is Figure 1 is a schematic diagram of the cross-sectional structure of the valve device at one position shown in FIG. 1;

[0011] Figure 3 is Figure 1 is a schematic diagram of the cross-sectional structure of the valve device at another position shown in FIG. 1;

[0012] Figure 4 is Figure 1 is a schematic diagram of the cross-sectional structure of the valve device shown in FIG. 1;

[0013] Figure 5 is a schematic diagram of the combined structure of the valve core and the first limiting structure provided by an embodiment of the present application;

[0014] Figure 6 is Figure 5 is a schematic diagram of the cross-sectional structure of the combined structure of the valve core and the first limiting structure shown in FIG. 2;

[0015] Figure 7is a front view structural schematic diagram of a valve core provided by an embodiment of the present application;

[0016] Figure 8 is a front view structural schematic diagram of a valve core provided by another embodiment of the present application;

[0017] Figure 9 is a front view structural schematic diagram of a valve core provided by still another embodiment of the present application;

[0018] Figure 10 is a front view structural schematic diagram of a valve core provided by yet another embodiment of the present application;

[0019] Figure 11 is Figure 1 is a structural schematic diagram of a valve device and auxiliary tool assembly shown in the middle of the figure;

[0020] Figure 12 is a manufacturing structural schematic block diagram of a valve device provided by an embodiment of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0022] 1. A valve device; 101, valve cavity; 10, valve body assembly; 11, first valve body; 111, first hole; 12, cover body; 13, pressing part; 141, top wall part; 142, bottom wall part; 143, side wall part; 144, end hole; P1, first passage; P2, second passage; 145, side hole; 146, throttling groove; 15, connecting part; 20, valve core; 201, through cavity; 202, through passage; 21, chamber part; 211, transmission part; 212, connecting part; 210, through hole; 22, flow passage part; 23, valve core shaft; 231, transmission hole; 221, mounting hole; 30, sealing assembly; 301, flow through hole; 31, sealing mounting part; 32, sealing block; 33, elastic part; 34, positioning part; 41, bearing assembly; 42, first limiting structure; 43, second limiting structure; 431, abutting surface; 50, motor assembly; 510, motor shell; 511, coil assembly; 512, rotor assembly; 521, gear assembly; 53, sleeve; 54, control board; 61, sealing gasket; 62, sealing ring; 70, auxiliary tool; 71, main body part; 72, abutting part. DETAILED DESCRIPTION

[0023] Features and exemplary embodiments of various aspects of the present application will be described below. In order to make the purpose, technical solutions and advantages of the present application more clear, the present application will be further described below in combination with the drawings and specific embodiments. In this article, relationship terms such as "first" and "second" are only used to distinguish one component from another component with the same name, and do not necessarily require or imply any actual relationship or order between the components.

[0024] As Figures 1 to 6 shown, the valve device 1 can be applied in a vehicle thermal management system or an air conditioning system, especially in a refrigerant circulation loop of a vehicle, and specifically, the valve device 1 can be used to control the on-off of a flow path in the refrigerant circulation loop and / or adjust the flow size of the refrigerant.

[0025] The valve device 1 provided by the embodiments of the present application further includes a valve body assembly 10, a valve core 20 and a sealing assembly 30, the valve device 1 has a valve cavity 101, the valve body assembly 10 defines at least part of the wall of the valve cavity 101, and at least part of the sealing of the valve core 20 is arranged in the valve cavity 101 and is rotatable relative to the valve body assembly 10, as Figures 2 to 4 shown, the valve body assembly 10 includes a first valve body 11 and a cover body 12, which are sealingly arranged between each other, and both of which define part of the wall of the valve cavity 101.

[0026] In specific implementation, the sealing assembly 30 can include a sealing block 32 and an elastic member 33, the elastic member 33 can be sleeved on the outer circumferential side of the connecting piece 15, the sealing block 32 is abuttingly arranged between the valve core 20 and the elastic member 33 along the axial direction of the valve device 1, and the elastic member 33 is abuttingly arranged between the sealing block 32 and the bottom wall 142, so as to facilitate better sealing of the valve device 1.

[0027] As Figures 2 to 4 shown, in order to limit the sealing assembly 30, in some embodiments, the valve device 1 further includes a sealing mounting piece 31 and a positioning piece 34, one part of the positioning piece 34 is located in the sealing mounting piece 31, and another part of the positioning piece 34 is located in the bottom wall 142, so that the positioning piece 34 can seal the position of the sealing mounting piece 31. The sealing block 32 is limitingly arranged in the hole of the sealing mounting piece 31, so that the hole and the corresponding end hole 144 of the sealing block 32 are oppositely arranged and communicated.

[0028] In order to realize the sealing between the first valve body 11 and the cover body 12, in some embodiments, the valve device 1 further includes a sealing gasket 61 and a sealing ring 62, the sealing gasket 61 is abuttingly arranged between the cover body 12 and the first valve body 11 along the height direction of the valve device 1, and the sealing ring 62 is abuttingly arranged between the cover body 12 and the first valve body 11 along the direction intersecting the height direction of the valve device 1. In order to clamp the sealing gasket 61 between the cover body 12 and the first valve body 11, the valve device 1 further includes a pressing piece 13, which is located on the side of the cover body 12 away from the sealing gasket 61 along the height direction of the valve device 1, and the pressing piece 13 can be threadedly connected with the first valve body 11, which is conducive to clamping the sealing gasket 61 by screwing the pressing piece 13 to push the cover body 12.

[0029] The first valve body 11 includes a bottom wall portion 142 and a side wall portion 143, the side wall portion 143 protrudes from the bottom wall portion 142 along the height direction of the valve body assembly 10, both the bottom wall portion 142 and the side wall portion 143 form part of the valve cavity 101, and at least part of the sealing assembly 30 is arranged between the bottom wall portion 142 and the valve core 20. The valve device 1 has an end port 144, the end port 144 is located in the bottom wall portion 142, fluid can enter or exit the valve device 1 through the end port 144, and the center line of the end port 144 is parallel to or coincides with the axial direction of the valve body assembly 10. In some embodiments, the end port 144 is located in the bottom wall portion 142, specifically, the end port 144 can pass through the bottom wall portion 142, and the bottom wall portion 142 defines at least part of the wall of the end port 144. Or in other embodiments, as shown in Figure 2 and Figure 3 The valve body assembly 10 further includes a connecting piece 15, the end port 144 is located in the connecting piece 15, and part of the connecting piece 15 is sleeved on the inner surface side of the bottom wall portion 142, at this time the end port 144 is located inside the bottom wall portion 142. By rotating the valve core 20, the end port 144 can be opened or closed. Here, the end port 144 is closed, which means that the end port 144 is not connected to any other port on the valve body assembly 10.

[0030] Optionally, the extension directions of the bottom wall portion 142 and the side wall portion 143 are perpendicular, and the center lines of the at least two end ports 144 are parallel to or coincide with the axial direction of the valve body assembly 10. Optionally, the number of end ports 144 can be two, four, five or more, and the side wall portion 143 can also have a side port 145, the side port 145 passes through the side wall portion 143, the side port 145 is connected to the valve cavity 101, and the center line of the side port 145 is parallel to or coincides with the radial direction of the valve core 20. In the embodiments of the present application, all the end ports 144 can be arranged in the bottom wall portion 142, or part of the end ports 144 are arranged in the bottom wall portion 142, and the other part of the end ports 144 are arranged in the side wall portion 143. Here, the valve device 1 with the end port 144 and the side port 145 is taken as an example for description.

[0031] To realize the rotation of the valve core 20, in the embodiment of the present application, the valve device 1 further comprises a motor assembly 50 and a gear assembly 521, the motor assembly 50 is in driving connection with the gear assembly 521, and the gear assembly 521 is in driving connection with the valve core 20, so as to drive the valve core 20 to rotate through the gear assembly 521. The working fluid in the embodiment of the present application can be refrigerant, and the pressure of the refrigerant is relatively large. In order to enable the valve core 20 to rotate stably, in some embodiments, the gear assembly 521 comprises at least one planetary gear assembly, and each level of planetary gears is in driving connection. Among them, the last level of planetary gear assemblies in the planetary gear assembly is in driving connection with the valve core 20. In specific implementation, the valve device 1 can further comprise a valve core shaft 23, the valve core shaft 23 is in driving connection with the last level of planetary gear assemblies, at this time, the valve core shaft 23 can be the output shaft of the last level of planetary gear assemblies, and the valve core shaft 23 is in interference fit with the valve core 20, so as to drive the valve core 20 to rotate.

[0032] Further, the valve device 1 further comprises a sleeve 53 and a rotor assembly 512, at least part of the rotor assembly 512 is located on the inner surface side of the sleeve 53, the rotor assembly 512 is in driving connection with the gear assembly 521, and the sleeve 53 can be in sealing connection with the cover body 12, so as to facilitate reducing or preventing the fluid from flowing out from the gap between the sleeve 53 and the cover body 12. Optionally, the sleeve 53 and the cover body 12 can be welded and sealed, and part of the cover body 12 is located in the space defined by the sleeve 53. When the high-pressure refrigerant fluid such as carbon dioxide flows in the valve device 1, by setting a reasonable planetary gear assembly, the driving force on the valve core 20 can be improved. Specifically, the specific structure of the planetary gear assembly can be set according to user requirements, for example, a three-level planetary gear assembly, a four-level planetary gear assembly, or a two-level planetary gear assembly, or more levels of planetary gear assemblies.

[0033] Please further refer to Figure 2 and Figure 3 In some embodiments, the valve device 1 further comprises a motor assembly 50, the motor assembly 50 is sleeved on the outer peripheral side of the sleeve 53. The motor assembly 50 comprises a motor shell 510, a coil assembly 511 and a control board 54, the coil assembly 511 is sleeved on the outer peripheral side of the sleeve 53, the rotor assembly 512 is located in the magnetic field range of the coil assembly 511 in working state, and the area where the coil assembly 511 is located and the area where the rotor assembly 512 is located are fluidically isolated by the sleeve 53, so as to prevent the fluid from entering the area where the coil assembly 511 is located and causing damage to the coil assembly 511.

[0034] In this embodiment, the motor shell 510 can be injection molded with the coil assembly 511 or the coil assembly 511 is positioned in the driving cavity of the motor shell 510, the control panel 54 is electrically connected with the coil assembly 511 and controls the power-on or power-off of the coil assembly 511, the coil assembly 511 can generate a magnetic field when powered on, and the rotor assembly 512 can rotate under the action of the magnetic field, which is convenient for transmitting power to the gear assembly 521, and then driving the valve core 20 to rotate through the planetary gear assembly.

[0035] During the rotation of the valve core 20, due to the impact of the fluid or the influence of the structure of the valve device 1, the valve core 20 may be deflected around the central axis of the first valve body 11 during the rotation of the valve core 20. At this time, the valve core 20 will contact the wall surface defining the valve cavity 101. If the contact area between the valve core 20 and the wall surface defining the valve cavity 101 is large, the valve body assembly 10 will generate a large frictional resistance to the valve core 20, which is easy to cause the risk of locked-rotor.

[0036] To solve the above problems, in combination with Figures 2 to 6In some embodiments, the valve core 20 comprises a chamber portion 21 and a flow passage portion 22, the chamber portion 21 and the flow passage portion 22 are in one-piece structure, the extending direction of the flow passage portion 22 intersects with the extending direction of the side wall portion 143, the flow passage portion 22 can be parallel or substantially parallel to the bottom wall portion 142, specifically, the side wall portion 143 extends along the axial direction of the valve device 1, and the flow passage portion 22 extends along a direction perpendicular to the axial direction of the valve device. The chamber portion 21 has a through cavity 201, the flow passage portion 22 has at least one through passage 202, the through passage 202 is in communication with the through cavity 201, the through passage 202 can be in communication with the end portion hole 144, and the through cavity 201 is in communication with the side portion hole 145. Through the rotation of the valve core 20, the side portion hole 145 can be selectively in communication or not in communication with the end portion hole 144. The orthographic projection of the chamber portion 21 on the flow passage portion 22 is located in the flow passage portion 22, that is, the projection of the chamber portion 21 on the flow passage portion 22 is located in the flow passage portion 22 along the axial direction of the valve core 20. Optionally, the outer diameter of the chamber portion 21 is smaller than the outer diameter of the flow passage portion 22. Along the radial direction of the valve core 20, the gap between the outer surface of the chamber portion 21 and the inner surface of the valve body assembly 10 is larger than the gap between the outer surface of the flow passage portion 22 and the inner surface of the valve body assembly 10. Through the above arrangement, since the orthographic projection of the chamber portion 21 on the flow passage portion 22 is located in the flow passage portion 22, at this time, the outer peripheral side surface of the flow passage portion 22 is protrudingly arranged compared with the outer peripheral side surface of the chamber portion 21. When the chamber portion 21 and the flow passage portion 22 are both located in the valve cavity 101, it is convenient to make the chamber portion 21 and the flow passage portion 22 have different gaps with the wall surface defining the valve cavity 101. When the valve core 20 is in contact with the wall surface defining the valve cavity 101 due to the deflection during the rotation of the valve core 20, it is convenient to reduce the contact area between the valve core 20 and the wall surface defining the valve cavity 101, which is conducive to reducing the friction force received by the valve core 20, reducing the resistance received by the valve core 20, reducing the rotation torque of the valve core 20, and improving the risk of stall of the valve core 20.

[0037] In some embodiments, the valve core 20 is in one-piece structure, specifically, the chamber portion 21 and the flow passage portion 22 are in one-piece structure. Compared with the separate arrangement and welding fixation of the chamber portion 21 and the flow passage portion 22, the embodiments of the present application can reduce the assembly steps of the valve device 1 and are conducive to simplifying the structure of the valve device 1. The chamber portion 21 comprises a transmission portion 211, the transmission portion 211 and the flow passage portion 22 are arranged along the axial direction of the valve core 20, the valve device 1 comprises a valve core shaft 23, and the transmission portion 211 is limitingly arranged and drivingly connected with the valve core shaft 23. Optionally, the transmission portion 211 has a transmission hole 231, the center axis of the transmission hole 231 can coincide with the center axis of the valve core 20, part of the valve core shaft 23 is located in the transmission hole 231, and the valve core shaft 23 is in interference fit with the valve core, which is conducive to driving the valve core 20 to rotate synchronously by the valve core shaft 23.

[0038] In some embodiments, the valve body assembly 10 further comprises a top wall portion 141, the bottom wall portion 142 and the top wall portion 141 are arranged along the axial direction of the valve device 1, and the bottom wall portion 142 and the top wall portion 141 each define a partial wall portion of the valve cavity 101. The top wall portion 141 can be located on the cover body 12. In order to seal the end hole 144 of the valve device 1, the valve device 1 further comprises a sealing assembly 30, which is located between the flow passage portion 22 and the bottom wall portion 142 along the axial direction of the valve device 1, and the sealing assembly 30 has a flow passage hole 301 which communicates with the corresponding end hole 144.

[0039] In order to limit the position of the valve core 20 and provide better force support to the valve core 20, in some embodiments, the valve device 1 further comprises a bearing assembly 41, which is located between the chamber portion 21 and the top wall portion 141, and the bearing assembly 41 is sleeved on the outer circumferential side of the valve core shaft 23. Optionally, the bearing assembly 41 can comprise a ball bearing, which is convenient for bearing the bidirectional load of the valve core in the running process in the upward and downward directions along the axial direction of the valve core.

[0040] Please further refer to Figure 5 and Figure 6 In some embodiments, the chamber portion 21 further comprises a connecting portion 212, at least a part of the connecting portion 212 is connected between the transmission portion 211 and the flow passage portion 22 along the axial direction of the valve core 20, the connecting portion 212 defines at least a part of the side wall of the through cavity 201, and the connecting portion 212 is an integral structure with the transmission portion 211. Through the above arrangement, the valve core 20 is arranged as an integral structure, so that the power of the gear assembly 521 is transmitted to the flow passage portion 22 through the transmission portion 211 and the connecting portion 212, which is conducive to the stable movement of the valve core 20, and the integral valve core 20 is conducive to improving the structural strength of the valve core 20 itself. Optionally, the outer circumferential surface of the connecting portion 212 can be a rotary curved surface formed along the central axis of the valve core 20. The outer circumferential surface of the transmission portion 211 and the outer circumferential surface of the connecting portion 212 can be arranged in the same plane, which is conducive to simplifying the structure of the valve core 20.

[0041] In some embodiments, the connecting portion 212 has a conductive passage 210 that extends through the sidewall of the connecting portion 212 and communicates with the valve cavity 101. The valve body assembly 10 includes a sidewall portion 143 that defines a portion of the wall of the valve cavity 101 and has a side passage 145 that communicates with the valve cavity 101. The side passage 145 is disposed opposite at least a portion of the conductive passage 210. This arrangement enables the side passage 145 to communicate with the end passage 144 through the valve cavity 101, the conductive cavity 201, and the conductive passage 202, thereby achieving the fluid control function of the valve device 1. Furthermore, since the side passage 145 is disposed opposite at least a portion of the conductive passage 210, pressure loss of the fluid is reduced when the fluid interacts between the side passage 145 and the conductive passage 210 of the valve core 20.

[0042] like Figure 3 As shown, in some embodiments, the bottom wall portion 142 has at least two end channels 144, one of which is defined as a first channel P1, and the other end channel 144 is defined as a second channel P2. The side wall portion 143 has a side channel 145, wherein the side channel 145 can be a normally open channel. By rotating the valve core 20, the side channel 145 can be connected to at least one of the end channels 144, or the end channel 144 can be closed, which is conducive to achieving the fluid control function of the valve device 1. In this article, the end channel 144 is closed, which means that the end channel 144 is not connected to other end channels 144 or side channels 145.

[0043] In a specific implementation, the flow channel portion 22 has at least one conducting channel 202, and the conducting channel 202 can connect the side channel 145 with one of the first channel P1 and the second channel P2, or the flow channel portion 22 can isolate the side channel 145 from the fluid of either the first channel P1 or the second channel P2. Figure 10 As shown, the flow channel portion 22 has a single conducting channel 202. When the conducting channel 202 is rotated to be offset from any of the end channels 144, the valve device 1 can fully close. That is, the side channels 145 in the valve device 1 are not connected to any of the end channels 144, and the end channels 144 are not connected to each other. As the valve core 20 rotates, when the conducting channel 202 rotates to be aligned with one of the end channels 144, the side channel 145 can be connected to the end channel 144.

[0044] Or, as Figures 7 to 10As shown, the flow passage portion 22 has at least two through channels 202, and the through channels 202 can communicate the side hole 145 with at least one of the first passage P1 and the second passage P2. Through the above arrangement, any one of the at least two through channels 202 can be communicated with the end hole 144, so as to facilitate the quick flow path switching of the valve device 1.

[0045] In some embodiments, as shown in Figure 7 As shown, the flow passage portion 22 has at least two through channels 202, and the flow passage portion 22 further includes a throttling groove 146 recessed from the surface of the flow passage portion 22 towards the inside of the flow passage portion 22, and the throttling groove 146 is communicated with at least one of the at least two through channels 202. In a specific implementation, the throttling groove 146 extends from the surface of the flow passage portion 22 towards the end surface of the bottom wall portion 142 to the inside of the flow passage portion 22, the throttling groove 146 extends a distance less than the thickness of the flow passage portion 22, and the throttling groove 146 has a cross-sectional area for communicating fluid smaller than the cross-sectional area of the through channel 202. Through the above arrangement, the throttling function of the valve device 1 is facilitated, so as to meet the multiple mode requirements of the valve device 1.

[0046] To achieve the proportional regulation function of the fluid, in other embodiments, as shown in Figure 9 As shown, along the radial direction of the valve core 20, the through channel 202 has a first inner diameter d1, and along the direction around the rotation axis of the valve core 20, the through channel 202 has a second inner diameter d2, and the second inner diameter d2 is greater than or equal to the first inner diameter d1. The cross section of the end hole 144 can be a circular hole, and the second inner diameter d2 is greater than the caliber of the end hole 144, and the first inner diameter is less than or equal to the caliber of the end hole 144. When the second inner diameter d2 is greater than the first inner diameter d1, the end hole 144 communicated with the through channel 202 can achieve the proportional regulation function.

[0047] In combination with the above possible implementation manners, please further refer to Figures 2 to 6 The valve device 1 further includes a first limiting structure 42 and a second limiting structure 43. At least part of the first limiting structure 42 is located in the flow passage portion 22 or is limitingly arranged with the flow passage portion 22, and the valve core 20 can drive the first limiting structure 42 to rotate. At least part of the second limiting structure 43 is located in the side wall portion 143 or is limitingly arranged with the first valve body 11, and the second limiting structure 43 includes an abutting surface 431, and along the rotation direction of the valve core 20, the abutting surface 431 is located at both ends of the rotation stroke of the first limiting structure 42, at this time, the extension line of the rotation path defined by the central axis of the first limiting structure 42 intersects with the abutting surface 431, and the first limiting structure 42 can abut against the abutting surface 431 to limit the rotation angle of the valve core 20. Through the above arrangement, the initial rotation position of the valve core can be limited.

[0048] In some embodiments, the orthographic projection of at least part of the chamber portion 21 on the flow passage portion 22 is located within the flow passage portion 22, as shown in Figure 2 The gap between the outer circumferential surface of the chamber portion 21 and the inner surface of the first valve body 11 is greater than the gap between the outer circumferential surface of the flow passage portion 22 and the inner surface of the first valve body 11, and based on this, at least one of the first limiting structure 42 and the second limiting structure 43 is located between the inner surface of the side wall portion 143 and the chamber portion 21. Through the above arrangement, the positions of the first limiting structure 42 and the second limiting structure 43 can be reasonably arranged, which is conducive to reducing the structural size of the valve device 1.

[0049] As shown in Figure 2 , Figure 3 and Figure 6 , the first limiting structure 42 and the second limiting structure 43 each include a protruding structure, the protruding structure of the first limiting structure 42 can abut against the protruding structure of the second limiting structure 43, and at this time, the circumferential surface of the second limiting structure 43 can form an abutting surface 431. Through the above arrangement, the initial position of the valve core 20 can be limited while the structure of the first limiting structure 42 and the second limiting structure 43 is simplified, which is conducive to simplifying the structure of the valve device 1. In specific implementation, the protruding structure of the first limiting structure 42 and the protruding structure of the second limiting structure 43 can be shaft-shaped structures.

[0050] Alternatively, one of the first limiting structure 42 and the second limiting structure 43 includes a protruding structure, and the other includes a groove structure, and at least part of the protruding structure is embedded in the groove structure. For example, when the first limiting structure 42 includes a protruding structure and the second limiting structure 43 includes a groove structure, part of the first limiting structure 42 can be limitingly arranged with the flow passage portion 22, for example, interference fit, bonding or welding, etc., and the other part of the second limiting structure 43 can be inserted into the groove structure, which can extend from the inner surface of the side wall portion 143 to the inside of the side wall portion 143, and at this time, along the circumferential direction of the valve core 20, the abutting surface 431 can be located at the circumferential ends of the groove structure. Alternatively, when the first limiting structure 42 includes a groove structure and the second limiting structure includes a protruding structure, the groove structure can extend from the surface of the flow passage portion 22 toward the chamber portion 21 to the inside of the flow passage portion 22, the second limiting structure 43 can be limitingly arranged with the valve body assembly 10 such as the first valve body 11 or the cover body 12, and part of the second limiting structure 43 is embedded in the groove structure, and at this time, the outer circumferential surface of the second limiting structure 43 embedded in the groove structure forms the abutting surface 431. Through the above arrangement, the first limiting structure 42 and the second limiting structure 43 can cooperate to limit the initial position of the valve core 20.

[0051] As shown in Figures 2 to 6As shown, the first limiting structure 42 and the second limiting structure 43 each comprise a protruding structure, the first limiting structure 42 is arranged in position with the flow passage portion 22, specifically, the first limiting structure 42 can be fixedly arranged with the flow passage portion 22, for example, the two can be interference fit, or bonded, or welded, etc. The first limiting structure 42 is arranged protruding towards the side where the chamber portion 21 is located on the flow passage portion 22, for example, the first limiting structure 42 can be arranged protruding towards the side where the chamber portion 21 is located on the flow passage portion 22. Figure 6 As shown, the orthographic projection of the first limiting structure 42 on the flow passage portion 22 partially overlaps with the orthographic projection of the chamber portion 21 on the flow passage portion 22 or is arranged side by side along the radial direction of the valve core 20.

[0052] The second limiting structure 43 is arranged in position with the valve body assembly 10, specifically, the second limiting structure 43 can be fixedly arranged with the first valve body 11, for example, the two can be interference fit, or bonded, or welded, etc. Along the axial direction of the valve device 1, at least part of the second limiting structure 43 is located on the side of the flow passage portion 22 towards the chamber portion 21, at least part of the second limiting structure 43 is located in the valve cavity 101, the first limiting structure 42 and the second limiting structure 43 can abut to limit the rotation of the valve core 20. Through the above arrangement, the first limiting structure 42 and the second limiting structure 43 can cooperate with each other to limit the initial rotational position of the valve core 20.

[0053] In some embodiments, the first limiting structure 42 protrudes from the flow passage portion 22 in the direction towards the chamber portion 21, at least part of the second limiting structure 43 protrudes from the inner surface of the side wall portion 143, at least part of the first limiting structure 42 and at least part of the second limiting structure 43 are located at the same height of the valve device 1, the orthographic projection of the first limiting structure 42 on the flow passage portion 22 and the orthographic projection of the second limiting structure 43 on the flow passage portion 22 at least partially overlap. Through the above arrangement, it is convenient for the first limiting structure 42 to abut with the second limiting structure 43 during the rotation of the valve core 20.

[0054] In order to facilitate the arrangement of the second limiting structure 43 in position with the valve body assembly 10, as shown, Figure 12 In some embodiments, the side wall portion 143 has a first hole 111, one part of the second limiting structure 43 is fixedly arranged in the first hole 111, and another part of the second limiting structure 43 is located between the inner surface of the side wall portion 143 and the chamber portion 21.

[0055] In some embodiments, when the valve device 1 comprises a side portion channel 145, at least part of the side portion channel 145 can be located in the second limiting structure 43, through the above arrangement, the second limiting structure 43 can not only limit the initial position of the valve core 20, but also flow fluid, so that the structure of the valve device 1 of the embodiments of the present application is more compact. Specifically, the second limiting structure 43 can be a tubular structure with an inner cavity, when the side wall portion 143 has a first hole 111, asFigure 2 As shown, the first hole 111 penetrates the side wall portion 143, and the first hole 111 can limit the part side hole 145, and the part of the second limiting structure 43 can pass through the first hole 111 and extend to the inside of the valve cavity 101. Compared with the installation hole of the second limiting structure 43 additionally arranged on the side wall portion 143, the embodiment of the present application can install the limiting second limiting structure 43 by using the part side hole, can reduce fluid leakage, and is beneficial to simplify the structure of the valve device 1.

[0056] Further, in order to reduce the occupied space of the valve device 1, in some embodiments, the chamber portion 21 further has a connecting portion 212, the connecting portion 212 has a through hole 210 penetrating the outer circumferential side surface of the chamber portion 21, the through hole 210 communicates with the valve cavity 101, the first limiting structure 42 is arranged opposite to the through hole 210, and the orthographic projection of the first limiting structure 42 on the flow passage portion 22 overlaps the plane where the outer circumferential surface of the orthographic projection of the chamber portion 21 on the flow passage portion 22 is located. Through the above arrangement, compared with the parallel arrangement of the first limiting structure and the outer side surface of the connecting portion 212, the first limiting structure 42 of the embodiment of the present application is closer to the central axis of the valve core 20, which is beneficial to reduce the overall structure size of the valve core 20 and the first limiting structure 42.

[0057] In some embodiments, as shown, Figure 9 As shown, when the flow passage portion 22 has one through channel 202, and the valve device 1 further has at least two end hole portions 144, in one working mode of the valve device 1, the through hole 210 can communicate the end hole portion 144 with the side hole portion 145, and in another working mode of the valve device 1, any end hole portion 144 is arranged in a staggered manner with the through hole 210, and the flow passage portion 22 fluidically isolates the side hole portion 145 from any end hole portion 144. Through the above arrangement, it is beneficial to realize the full closing function of the valve device 1.

[0058] The valve device 1 further comprises a sealing assembly 30, which is located between the flow passage portion 22 and the first valve body 11 along the axial direction of the valve device 1. Specifically, the sealing assembly 30 can be arranged in abutment between the flow passage portion 22 and the bottom wall portion 142. The orthographic projection of the first limiting structure 42 on the flow passage portion 22 overlaps part of the orthographic projection of the sealing assembly 30 on the flow passage portion 22. Through the above arrangement, it is beneficial to make the structure of the valve device 1 more compact, and to reduce the structure size of the valve device 1.

[0059] Optionally, the two end holes 144 are arranged along the radial direction of the valve core 20, and the rotation stroke of the first limiting structure 42 is greater than or equal to 180°. Since the rotation stroke of the first limiting structure 42 is greater than or equal to 180°, by arranging the first limiting structure 42 on the side of the flow passage portion 22 facing the chamber portion 21, the second limiting structure 43 is arranged in limiting connection with the valve body assembly 10 or located on the first valve body 11, which facilitates arranging the first limiting structure 42 and the second limiting structure 43 by using the radial distance between the valve core 20 and the valve body assembly 10, and compared with arranging the limiting structure on the side of the flow passage portion 22 away from the chamber portion 21, the valve device 1 of the embodiment of the present application has a smaller structure size.

[0060] Further structure Figures 1 to 12 The embodiment of the present application also provides a manufacturing method of the valve device 1, which comprises the following steps.

[0061] In step S110, the first valve body 11 is provided, and the first valve body 11 has a first hole 111 penetrating through the inner side surface of the first valve body 11.

[0062] In step S120, the valve core assembly is provided, and the valve core assembly comprises the valve core 20 and the first limiting structure 42, and at least part of the first limiting structure 42 is located on the valve core 20 or arranged in limiting connection with the valve core 20.

[0063] As Figures 2 to 6 described above, the first limiting structure 42 can be a shaft-shaped protruding structure, the flow passage portion 22 of the valve core 20 comprises a mounting hole 221 arranged in spacing with the through channel 202, the mounting hole 221 is located on the circumferential edge of the flow passage portion 22, part of the first limiting structure 42 can be located in the mounting hole 221, and the first limiting structure 42 can be in interference fit with the flow passage portion 22.

[0064] In step S130, the valve core assembly is installed in the first valve body 11, so that part of the first limiting structure 42 is arranged towards the first hole 111, and another part of the first limiting structure 42 is located inside the first valve body 11 beyond the first hole 111.

[0065] In step S140, the second limiting structure 43 is assembled to the first hole 111, so that part of the second limiting structure 43 is fixedly connected with the inside of the first hole 111, and another part of the second limiting structure 43 protrudes from the first hole 111 and is located between the first valve body 11 and the valve core 20.

[0066] By the above arrangement, the second limiting structure 43 can be limited with the first valve body 11, so as to facilitate the abutment between the first limiting structure 42 and the second limiting structure 43 during the rotation of the valve core 20, and facilitate the limiting of the initial position of the valve core 20. In the embodiment of the application, the first limiting structure 42 is arranged towards the first hole 111, and the second limiting structure 43 is arranged in the first hole 111, and another part of the second limiting structure 43 is located between the first valve body 11 and the valve core 20, which is beneficial to the structure size of the valve device 1 manufactured by the manufacturing method of the valve device 1

[0067] In some embodiments, the step S140 of assembling the second limiting structure 43 into the first hole 111 comprises:

[0068] Step 1, providing an auxiliary tool 70, the auxiliary tool 70 comprising a main body part 71 and an abutment part 72, the main body part 71 protruding from the abutment part 72, and the orthographic projection of the main body part 71 on the abutment part 72 is located in the abutment part 72;

[0069] Step 2, pushing the second limiting structure 43 into the first hole 111 by the main body part 71 until the abutment part 72 abuts against the outer side of the first valve body 11.

[0070] By the above arrangement, the second limiting structure 43 can be limited with the first valve body 11, so as to facilitate the abutment between the first limiting structure 42 and the second limiting structure 43 during the rotation of the valve core 20, and facilitate the limiting of the initial position of the valve core 20. In the embodiment of the application, the first limiting structure 42 is arranged towards the first hole 111, and the second limiting structure 43 is arranged in the first hole 111, and another part of the second limiting structure 43 is located between the first valve body 11 and the valve core 20, which is beneficial to the structure size of the valve device 1 manufactured by the manufacturing method of the valve device 1

[0071] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and are not intended to limit the technical solutions described in the present application. For example, the directions such as "front", "rear", "left", "right", "up", "down" and the like are defined. Although the present application has been described with reference to the above embodiments, those skilled in the art should understand that the technical personnel in the technical field can still modify, combine or equivalently replace the present application, and all technical solutions and improvements which do not deviate from the spirit and scope of the present application should be covered within the scope of the claims of the present application.

Claims

1. A valve device (1) characterized in that, The valve device (1) has a valve cavity (101), and comprises a valve body assembly (10), a valve core (20), a first limiting structure (42) and a second limiting structure (43), the valve body assembly (10) comprises a bottom wall portion (142) which defines a partial wall portion of the valve cavity (101), at least part of the valve core (20) is located in the valve cavity (101), and the valve core (20) comprises a flow passage portion (22) which is arranged towards the bottom wall portion (142); At least part of the first limiting structure (42) is located in or limited by the flow passage portion (22), and the valve core (20) can drive the first limiting structure (42) to rotate, at least part of the second limiting structure (43) is located in or limited by the valve body assembly (10), and at least part of at least one of the first limiting structure (42) and the second limiting structure (43) is located on a side of the flow passage portion (22) away from the bottom wall portion (142), and the second limiting structure (43) comprises an abutting surface (431), which is located at both ends of a rotating stroke of the first limiting structure (42) in a rotating direction of the valve core (20).

2. Valve device (1) according to claim 1, characterized in that The valve body assembly (10) comprises a side wall portion (143), an extending direction of the flow passage portion (22) intersects an extending direction of the side wall portion (143), an extending line of a rotating path defined by a central axis of the first limiting structure (42) intersects the abutting surface (431), the valve core (20) further comprises a chamber portion (21), and a normal projection of at least part of the chamber portion (21) on the flow passage portion (22) is located in the flow passage portion (22), and at least one of the first limiting structure (42) and the second limiting structure (43) is located between an inner surface of the side wall portion (143) and the chamber portion (21).

3. Valve device (1) according to claim 2, characterized in that The first limiting structure (42) and the second limiting structure (43) each comprise a protruding structure, and the protruding structure of the first limiting structure (42) can abut against the protruding structure of the second limiting structure (43); Or one of the first limiting structure (42) and the second limiting structure (43) comprises a protruding structure, and the other comprises a groove structure, and at least part of the protruding structure is embedded in the groove structure.

4. Valve device (1) according to claim 3, characterized in that The first limiting structure (42) protrudes from the flow passage portion (22) in a direction towards the chamber portion (21), at least part of the second limiting structure (43) protrudes from an inner surface of the side wall portion (143), at least part of the first limiting structure (42) and at least part of the second limiting structure (43) are located at the same height of the valve device (1), and a normal projection of the first limiting structure (42) on the flow passage portion (22) and a normal projection of the second limiting structure (43) on the flow passage portion (22) at least partially overlap.

5. Valve device (1) according to any one of claims 2 to 4, characterized in that The side wall part (143) has a first hole (111), one part of the second limiting structure (43) is fixedly arranged in the first hole (111), and the other part of the second limiting structure (43) is located between the inner surface of the side wall part (143) and the chamber part (21).

6. Valve device (1) according to claim 5, characterized in that The valve device (1) comprises a side part hole (145), at least part of the side part hole (145) is located in the second limiting structure (43), the side part hole (145) communicates with the valve cavity (101), the flow channel part (22) has at least one guide channel (202), and the side part hole (145) communicates with the guide channel (202).

7. Valve device (1) according to claim 6, characterized in that The valve core (20) further comprises a chamber part (21), the chamber part (21) has a guide cavity (201) and a guide hole (210), the guide hole (210) penetrates the outer circumferential surface of the chamber part (21), the guide hole (210) and the guide channel (202) both communicate with the guide cavity (201), the guide hole (210) communicates with the valve cavity (101), the first limiting structure (42) is arranged opposite to the guide hole (210), and the orthographic projection of the first limiting structure (42) on the flow channel part (22) overlaps the surface where the orthographic projection of the outer circumferential surface of the chamber part (21) on the flow channel part (22) is located.

8. Valve device (1) according to claim 6, characterized in that The flow channel part (22) has one guide channel (202), and the valve device (1) further has at least two end part holes (144), in one working mode of the valve device (1), the guide hole (210) can communicate the end part hole (144) with the side part hole (145), in another working mode of the valve device (1), any end part hole (144) is arranged in a position deviated from the guide hole (210), the flow channel part (22) fluidically isolates the side part hole (145) from any end part hole (144), the two end part holes (144) are arranged along the radial direction of the valve core (20), and the rotation stroke of the first limiting structure (42) is greater than or equal to 180°. The valve device (1) further comprises a sealing assembly (30), which is located between the flow channel part (22) and the valve body assembly (10) along the axial direction of the valve device (1), and the orthographic projection of the first limiting structure (42) on the flow channel part (22) overlaps part of the orthographic projection of the sealing assembly (30) on the flow channel part (22).

9. A method of manufacturing a valve device, characterized by, Comprise: A first valve body (11) is provided, the first valve body (11) has a first hole (111), and the first hole (111) penetrates the inner surface of the first valve body (11); A valve core assembly is provided, the valve core assembly comprises a valve core (20) and a first limiting structure (42), and at least part of the first limiting structure (42) is located in the valve core (20) or the first limiting structure (42) is arranged in position with the valve core (20); The valve core assembly is installed in the first valve body (11) so that one part of the first limiting structure (42) is arranged towards the first hole (111); The second limiting structure (43) is assembled to the first hole (111) so that one part of the second limiting structure (43) is fixedly connected with the inside of the first hole (111), and the other part of the second limiting structure (43) protrudes from the first hole (111) and is located between the first valve body (11) and the valve core (20).

10. The method of manufacturing a valve device (1) according to claim 9, characterized in that The assembling of the second limiting structure (43) to the first hole (111) comprises: An auxiliary tool (70) is provided, which comprises a main body part (71) and an abutting part (72), the main body part (71) protrudes from the abutting part (72), and the orthographic projection of the main body part (71) on the abutting part (72) is located in the abutting part (72); The second limiting structure (43) is pushed into the first hole (111) by the main body part (71) until the abutting part (72) abuts against the outer side of the valve body assembly (10).

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