Valve device

Abstract

A valve device includes a valve body having a communication passage, the valve body including an outer peripheral portion, the communication passage having a flow port in the outer peripheral portion; the sealing component is provided with a first communicating port and a second communicating port, the first communicating port and the second communicating port are distributed in the circumferential direction of the valve device at intervals, and the outer circumferential portion of the valve element abuts against the sealing component in the radial direction of the valve device; the valve element comprises a supporting part, in the first working state, one part of the circulation opening is opposite to and communicates with the first communication opening, one part of the circulation opening is opposite to and communicates with the second communication opening, and at least part of the supporting part abuts against the sealing component. And the supporting part can support the sealing component, so that the deformation of the sealing component is reduced, and the performance of the sealing seat is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of fluid control, and in particular to a valve device. Background Art

[0002] The valve device can be applied to a thermal management system to control the opening, closing or reversing of a fluid passage.

[0003] In the related art, the valve device includes a sealing seat and a valve core. A portion of the sealing seat abuts against the outer periphery of the valve core, and the outer periphery of the valve core has an opening for circulating fluid. As the valve core rotates, a portion of the sealing seat is opposite to the opening, and this portion of the sealing seat is in a suspended state. At this time, the sealing seat will produce uneven deformation, which will affect the performance of the sealing seat after a certain period of use. Summary of the invention

[0004] One object of the present application is to provide a valve device that is beneficial to reducing the deformation of the sealing seat.

[0005] One embodiment of the present application provides a valve device, including a valve core, the valve core having a connecting passage, the valve core including an outer peripheral portion, the connecting passage having a flow port on the outer peripheral portion; the valve device including a sealing component, the sealing component having a first connecting port and a second connecting port, the first connecting port and the second connecting port being distributed at intervals along the circumference of the valve device, and along the radial direction of the valve device, the outer peripheral portion of the valve core abuts against the sealing component; the flow port includes a first opening and a second opening, the valve core includes a supporting portion, along the axial direction of the valve device, the first opening is located on one side of the supporting portion, and the second opening is located on the other side of the supporting portion; the valve device includes at least a first working state, in the first working state, a part of the flow port is opposite to and connected with the first connecting port, and another part of the flow port is opposite to and connected with the second connecting port, and at least a part of the supporting portion abuts against the sealing component.

[0006] In the valve device provided in the embodiment of the present application, the valve core includes a supporting portion, and along the axial direction of the valve device, the first opening is located on one side of the supporting portion, and the second opening is located on the other side of the supporting portion. The valve device includes at least a first working state. In the first working state, a portion of the flow port is opposite to and connected with the first connecting port, and a portion of the flow port is opposite to and connected with the second connecting port. At least part of the supporting portion abuts against the sealing component, and the supporting portion can support the sealing component, thereby reducing the deformation of the sealing component, thereby improving the performance of the sealing seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 A schematic diagram of a three-dimensional structure of an embodiment of a valve device of the present application is shown;

[0008] Figure 2 Shows Figure 1 The valve device shown is a schematic structural diagram at an angle;

[0009] Figure 3 Shows Figure 2 The cross-sectional structure diagram of the valve device shown along the CC line;

[0010] Figure 4 Shows Figure 2 The cross-sectional structure diagram of the valve device shown along line BB;

[0011] Figure 5 Shows Figure 3 A schematic diagram of the three-dimensional structure of the valve core shown;

[0012] Figure 6 Shows Figure 5 The schematic diagram of the structure of the valve core shown is at an angle;

[0013] Figure 7 Shows Figure 6 The cross-sectional structure diagram of the valve core along the AA line and the DD line is shown;

[0014] Figure 8 Shows Figure 2 an exploded schematic diagram of a portion of the valve assembly shown;

[0015] Figures 9a to 9d Shows Figure 3 Schematic diagrams of different rotational positions of the valve core when looking at the outer surface of the valve core and schematic diagrams of the first communication port and the second communication port;

[0016] Fig.10 Shows Figure 3 A schematic diagram of a flow curve of the valve device shown;

[0017] Fig.11 A schematic diagram of the three-dimensional structure of a valve core of another embodiment of the valve device of the present application is shown;

[0018] Fig.12 Shows Fig.11 The schematic diagram of the structure of the valve core shown is at an angle;

[0019] Fig.13 Shows Fig.12 The cross-sectional structure diagram of the valve core along line EE is shown;

[0020] Fig.14a , Fig.14b Shows Fig.11 Schematic diagrams of different rotational positions of the valve core when looking at the outer surface of the valve core and schematic diagrams of the first communication port and the second communication port;

[0021] Fig.15 A schematic diagram of the expanded structure of another embodiment of the valve core of the present application is shown;

[0022] Fig.16 A three-dimensional structural schematic diagram of another embodiment of the valve core of the present application is shown;

[0023] Fig.17 A three-dimensional structural schematic diagram of another embodiment of the valve core of the present application is shown;

[0024] Fig.18 Shows Fig.17 A schematic diagram of the cross-sectional structure of the valve core shown;

[0025] Fig.19 A schematic diagram of the expanded structure of another embodiment of the valve core of the present application is shown;

[0026] Fig. 20 A schematic diagram of the expanded structure of another embodiment of the valve core of the present application is shown;

[0027] Fig.21 Shows Fig.11 Schematic diagram of flow curve of the valve device shown.

[0028] Reference numerals:

[0029] 100. Valve device; 1. Valve body assembly; 10. Accommodating chamber; 11. Elastic member; 12. Bracket; 13. Bearing; 2. Valve core; 21. Main body; 211. Peripheral portion; 202. First channel; 23. Second channel; 20. Flow port; 221. First opening; 222. End wall; 223. First end; 224. Second end; 231. Second opening; 24. Support portion; 241. Notch channel; 25. Third channel; 26. Third opening; 27. Through hole; 271. Fourth opening; 28. Throttle groove; 29. ​​Shaft; 3. Sealing component; 31. First connecting port; 32. Second connecting port; 6. Driving portion; 61. Rotor assembly; 62. Stator assembly; 63. Transmission assembly. DETAILED DESCRIPTION

[0030] The embodiments are described in detail below with reference to the accompanying drawings.

[0031] In order to make the purpose, technical solutions and advantages of the present application more clearly understood, 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 snap-on connection, hinged connection, etc., and the "fixed connection" in this application includes threaded connection, welding, bonding, vulcanization fixation, riveting, insert injection molding, interference fit, etc.

[0032] like Figure 1-Figure 10 As shown, in one embodiment of the valve device 100, the valve device 100 includes a valve body assembly 1 and a valve core 2. The axial direction of the valve device 100 is defined as follows: Figure 4 The rotation axis of the valve core 2 is defined as H. Figure 4 As shown by C1, the valve core 2 can rotate around the rotation axis, the axial direction of the valve device 100 is the same as the extension direction of the rotation axis of the valve core 2. In this embodiment, the central axis of the valve device 100 coincides with the rotation axis of the valve core 2.

[0033] The valve device 100 is an electric valve, and the valve device 100 includes a driving unit 6, and the driving unit 6 includes a stator assembly 62, a rotor assembly 61, and a transmission assembly 63. At least part of the stator assembly 62 is located on the periphery of the rotor assembly 61, and the stator assembly 62 can drive the rotor assembly 61. The rotor assembly 61 is in transmission connection with the transmission assembly 63, and the valve core 2 is in transmission connection with the transmission assembly 63. The valve core 2 can rotate or slide under the drive of the transmission assembly 63. The stator assembly 62 can be electrically connected and / or signal connected to the outside world, and the transmission assembly 63 can be a planetary gear mechanism.

[0034] like Figure 3-Figure 7 As shown, the valve device 100 includes a valve core 2, the valve core 2 has a connecting channel 22, and the connecting channel 22 has a flow port 20 at the outer peripheral portion 211; the valve device 100 includes a sealing component 3, the sealing component 3 has a first connecting port 31 and a second connecting port 32, the first connecting port 31 and the second connecting port 32 are distributed at intervals along the circumference of the valve device 100, and along the radial direction of the valve device 100, the outer peripheral portion 211 of the valve core 2 abuts against the sealing component 3, so that the sealing between the sealing component 3 and the valve core 2 can be achieved.

[0035] The valve core 2 includes a support portion 24, and the flow port 20 includes a first opening 221 and a second opening 231. Along the axial direction of the valve device 100, the first opening 221 is located on one side of the support portion 24, and the second opening 231 is located on the other side of the support portion 24; the valve device 100 includes at least a first working state. In the first working state, a part of the flow port 20 is opposite to and communicated with the first communication port 31, and a part of the flow port 20 is opposite to and communicated with the second communication port 32, and at least a part of the support portion 24 abuts against the sealing component 3. Fig.9c The figure shows the relative positions of the flow port 20 and the first communication port 31 and the second communication port 32 when the valve device 100 is in the first working state. Compared with the scheme of arranging two openings on the valve core 2 along the circumference of the valve device 100, in this embodiment, the span of the flow port 20 along the circumference of the valve device 100 is relatively large. When the radial size of the valve core 2 remains unchanged, the circumferential space of the valve core 2 is more fully utilized, thereby increasing the sum of the flow rates flowing through the first communication port 31 and the second communication port 32 in the first working state, and the flow curve will not produce a reverse jump during the flow regulation process. The support portion 24 supports the sealing component 3 opposite to it. Compared with the scheme without the support portion 24, the deformation of the sealing component 3 caused by suspension can be reduced, thereby extending the service life of the sealing component 3, and the risk of the sealing component 3 being scratched by the valve core 2 can be reduced, that is, the risk of the sealing component 3 being scratched by the wall forming the flow port 20 can be reduced. This scheme is particularly suitable for the case where the circumferential span of the flow port 20 is relatively large, because in this case, the suspended part of the sealing component 3 may be more.

[0036] It should be noted that the sealing component 3 can be an integral structure or a split structure including multiple parts. The sealing component 3 and the valve body assembly 1 can be arranged in abutment with each other, or the sealing component 3 and the valve body assembly 1 can be fixedly connected or limitedly connected. Figure 4 As shown, the sealing component 3 includes at least two sealing seats, the sealing seats are annular, the first communication port 31 is located in one of the sealing seats, and the second communication port 32 is located in the other of the sealing seats. The first communication port 31 and the second communication port 32 are quasi-circular. Along the radial direction of the valve device 100, one side of the sealing seat abuts against the valve body assembly 1, and the other side of the sealing seat abuts against the valve core 2. Specifically, the valve body assembly 1 includes a bracket 12 and an elastic member 11. The bracket 12 is made of metal. The elastic member 11 is fixedly connected to the bracket 12 through a vulcanization process. One side of the sealing seat abuts against the elastic member 11. The elastic member 11 is in a compressed state, which can give the sealing seat pressure toward the valve core 2 to improve the sealing effect.

[0037] In the first working state, along the axial direction of the valve device 100, the flow port 20 is located between the two ends of the first communication port 31, so that the area of ​​the flow port 20 facing the first communication port 31 is increased, so that the fluid flowing out of the flow port 20 is less obstructed, thereby reducing the flow resistance, and the valve core 2 located on both sides of the flow port 20 in the axial direction can abut against the sealing component 3, thereby reducing the suspended part of the sealing component 3, and further reducing the deformation of the sealing component 3. In the first working state, along the axial direction of the valve device 100, the flow port 20 is also located between the two ends of the second communication port 32, similar to the above, which can reduce the flow resistance and reduce the deformation of the sealing component 3.

[0038] like Figure 4-Figure 7 As shown, the first opening 221 and the second opening 231 are arranged along the axial direction of the valve device 100, and the support portion 24 is located between the first opening 221 and the second opening 231 along the axial direction of the valve device 100. The first opening 221 and the second opening 231 are continuous, the first opening 221 extends along the circumferential direction of the valve device 100, and the second opening 231 extends along the circumferential direction of the valve device 100. Along the axial direction of the valve device 100, one side of the support portion 24 is adjacent to the first opening 221, and the other side of the support portion 24 is adjacent to the second opening 231, which can reduce the axial length of the valve core 2, and the support portion 24 is a part of the outer peripheral portion 211, and there is no need to specially process the support portion 24. In this embodiment, the first opening 221 and the second opening 231 are separated. In other embodiments, such as Fig.16 As shown, a portion of the first opening 221 is adjacent to the second opening 231, or in other words, the support portion 24 is disconnected somewhere in its circumference, and the support portion 24 has a notch channel 241, and the support portion 24 connects the first opening 221 and the second opening 231. In the first working state, the first opening 221 and the second opening 231 are both connected to the first communication port 31, and the first opening 221 and the second opening 231 are both connected to the second communication port 32.

[0039] Specifically, Figure 5 As shown, the wall forming the first opening 221 includes an end wall 222. Along the circumference of the valve device 100, the end wall 222 is located at both ends of the first opening 221, and the end wall 222 is in an arc shape. The arc-shaped end wall 222 is convenient for cutting. In this embodiment, the wall forming the second opening 231 also includes an end wall 222. Along the circumference of the valve device 100, the end wall 222 is located at both ends of the second opening 231, and the end wall 222 is in an arc shape. In other embodiments, the end wall 222 may also be a triangle, etc., to achieve different flow curves.

[0040] The valve core 2 includes a main body 21 and a shaft 29, and the outer peripheral portion 211 is located on the main body 21. Along the axial direction of the valve device 100, the shaft 29 is located on one side of the main body 21, and the outer periphery of the shaft 29 is columnar. The valve body assembly 1 includes a bearing 13. Along the radial direction of the valve device 100, the shaft 29 and the bearing 13 are abutted or gapped. In this way, the shaft 29 can be radially limited by the bearing 13, thereby improving the coaxiality of the valve core 2. Specifically, the shaft 29 and the bearing 13 are slidably matched, and the bearing 13 is welded and fixed to the bracket 12.

[0041] like Figure 5 As shown, along the axial direction of the valve device 100, a part of the first opening 221 and a part of the second opening 231 are staggered. When the sizes of the first opening 221 and the second opening 231 remain unchanged, compared with the solution in which the first opening 221 and the second opening 231 are aligned in the axial direction of the valve device 100, a part of the first opening 221 and a part of the second opening 231 are staggered, so that the stroke of the valve core 2 from the stroke end point to the valve opening point becomes smaller, thereby reducing the opening and closing time of the valve device 100. The valve device 100 includes a second working state, Figure 9b A situation of the relative positions of the flow port 20 and the first connecting port 31 and the second connecting port 32 of the valve device 100 in the second working state is shown. In the second working state, at least part of the first opening 221 is opposite to the first connecting port 31, the first opening 221 is connected to the first connecting port 31, and the second opening 231 is not connected to the first connecting port 31.

[0042] like Figure 3-Figure 7 As shown, in this embodiment, along the circumference of the valve device 100, one end of the first opening 221 is defined as the first end 223, the other end of the first opening 221 is defined as the second end 224, and a first direction is defined. The first direction is parallel to the circumference of the valve device 100, and the first direction is from the second end 224 to the first end 223. Figure 7 , Figure 9a As shown by X, along the first direction, the first end 223 protrudes compared to one end of the second opening 231, and the second end 224 is retracted compared to the other end of the second opening 231. Figure 9a , Figure 9b As shown, since one end of the second opening 231 is retracted compared to the first end 223 , the portion of the valve core 2 left due to the retraction of the second opening 231 can be used to support the sealing component, thereby reducing deformation of the sealing component.

[0043] like Figure 9a-9dAs shown, during the process of the first connecting port 31 changing from closed to open, the valve core 2 rotates along the first direction, and the valve core 2 is first located at the end point of the stroke where the first connecting port 31 is fully closed; then, the first end 223 of the first opening 221 is opposite to the first connecting port 31, at which time the valve core 2 is located at the valve opening point, and the fluid can just pass through the first opening 221 but not through the second opening 231; then, one end of the second opening 231 is opposite to the first connecting port 31, and the first opening 221 and the second opening 231 are both connected to the first connecting port 31.

[0044] Fig.10 FIG. 1 shows a schematic diagram of a flow curve of the valve device 100 , Fig.10 The horizontal axis in is the rotation angle of the valve core, the third opening 26 is the fluid inlet, the first communication port 31 and the second communication port 32 are the fluid outlets, Fig.10 The solid line in is the flow rate of the second communication port 32, Fig.10 The dotted line in the figure is the flow rate of the first communication port 31. Point k1 is the point when the second communication port 32 is fully open; point k2 is the point when both the first communication port 31 and the second communication port 32 are half open; point k3 is the point when the first communication port 31 is fully open, and point k2 corresponds to Fig.9c The position of the middle valve core 2.

[0045] like Figure 5-Figure 7 As shown, along the circumference of the valve device 100, the angle between the two ends of the first opening 221 and the rotation axis of the valve core 2 is defined as a1, and the angle between the two ends of the second opening 231 and the rotation axis of the valve core 2 is defined as a2. In this embodiment, a1 is the same or substantially the same as a2, and the angle corresponding to the staggered portion of the first opening 221 and the second opening 231 is between 0° and 20°, preferably 5° to 15°. Along the axial direction of the valve device 100, the central angle corresponding to the overlapping portion of the first opening 221 and the second opening 231 is greater than or equal to the central angle corresponding to the first communication port 31, so that the flow rate of the first communication port 31 when it is fully opened will not be reduced. It should be noted that a reference plane is defined, the reference plane is perpendicular to the axial direction of the valve device 100, and the projection of the rotation axis of the valve core 2 on the reference plane is defined as the center of the circle. In this article, "the angle between the two ends of the opening and the central axis of the valve core 2" refers to the center angle formed by the line connecting the projection of the two ends of the opening on the reference plane and the center of the circle. In this article, "the corresponding center angle" refers to the center angle formed by the line connecting the projection of the two ends on the reference plane and the center of the circle.

[0046] In this embodiment, the valve device 100 includes a third working state and a fourth working state. Figure 9d FIG. 1 shows a situation in which the valve device 100 is in the third working state. Figure 9a1 shows a situation when the valve device 100 is in the fourth working state. In the third working state, the valve core 2 closes the first communication port 31, and the first opening 221 and the second opening 231 are not connected to the first communication port 31; in the fourth working state, the valve core 2 closes the second communication port 32, and the first opening 221 and the second opening 231 are not connected to the second communication port 32. Specifically, Figure 3-Figure 7 As shown, along the radial direction of the valve device 100, the first connecting port 31 and the second connecting port 32 are located on both sides of the valve core 2, and the range of a1 is 160° to 220°. In this way, when the first opening 221 is connected with the first connecting port 31 and the second connecting port 32, the first opening 221 can distribute a larger flow to the first connecting port 31 and the second connecting port 32, and the valve core 2 has the above-mentioned rotation position of completely closing the first connecting port 31 and completely closing the second connecting port 32.

[0047] The valve core 2 may be made of metal, such as stainless steel, which has good pressure resistance and wear resistance and is suitable for refrigerant systems.

[0048] As shown in this embodiment, Figure 3-Figure 5 As shown, the communication channel 22 includes a first channel 202, a second channel 23 and a third channel 25. The first channel 202 extends along the axial direction of the valve device 100. The first channel 202 has a third opening 26 at one end of the valve core 2. Along the radial direction of the valve device 100, the second channel 23 extends from the first opening 221 to the inside of the valve core 2 and communicates with the first channel 202. The third channel 25 extends from the second opening 231 to the inside of the valve core 2 and communicates with the first channel 202. The outer peripheral portion 211 of the valve core 2 is cylindrical or quasi-cylindrical. The first channel 202 is coaxial or substantially coaxial with the outer peripheral portion 211 of the valve device 100. Since the outer peripheral portion 211 of the valve core 2 is cylindrical or quasi-cylindrical, the radial dimension of the valve core 2 can be reduced while the diameter of the first channel 202 remains unchanged, thereby reducing the radial dimension of the valve body assembly 1, and further reducing the space occupied by the valve body assembly 1, which is convenient for integration with other components and is particularly suitable for vehicles. In other embodiments, the outer periphery 211 of the valve core 2 may be spherical or quasi-spherical, and the outer periphery 211 of the valve core 2 may be conical or quasi-conical. The fluid may flow into the communication channel 22 from the third opening 26 and flow out from at least one of the first opening 221 and the second opening 231.

[0049] In other embodiments of the valve device 100, the structures of the valve body assembly 1 and the sealing component 3 are the same as those in the above embodiments, and the structure of the valve core 2 is different from that in the above embodiments. Along the first direction, the first end 223 protrudes from one end of the second opening 231, and the second end 224 is flush with the other end of the second opening 231. Fig.15As shown, along the circumference of the valve device 100, the first end 223 protrudes compared to one end of the second opening 231, and the second end 224 protrudes compared to the other end of the second opening 231. In this way, more diverse flow curves can be formed to meet actual needs.

[0050] like Figure 11 to Figure 1 4, in another embodiment of the valve device 100, the structures of the valve body assembly 1 and the sealing component 3 included in the valve device 100 can be the same as those in the above embodiment. For the valve core 2, along the first direction, the first end 223 of the first opening 221 is flush with one end of the second opening 231, and the second end 224 is flush with the other end of the second opening 231. The valve device 100 includes the above-mentioned first working state, the third working state and the fourth working state, and the range of a1 is 160° to 200°. Fig.14a FIG. 1 shows a situation in which the valve device 100 is in the fourth working state. Fig.14b A situation of the valve device 100 in the first working state is shown. Fig.21 FIG. 2 shows a flow curve diagram of the valve device 100 in this embodiment, with the third opening 26 as the fluid inlet, the first communication port 31 and the second communication port 32 as the fluid outlets. Fig.21 The solid line in is the flow rate of the second communication port 32, Fig.21 The dotted line in the figure is the flow rate of the first communication port 31, point f1 is the point when the second communication port 32 is fully open; point f2 is the point when both the first communication port 31 and the second communication port 32 are half open; point f3 is the point when the first communication port 31 is fully open. Point f2 corresponds to Fig.14b , point f4 corresponds to the opening point of the first communication port 31, combined with Fig.10 , Fig.10 The point k4 shown in the figure corresponds to the valve opening point of the first connecting port 31. It can be clearly seen that after the first opening 221 and the second opening 231 are changed from being flush to being partially offset, the stroke of the valve core 2 from the stroke end point to the valve opening point becomes smaller.

[0051] In another embodiment of the valve core 2, the flow port 20 includes at least three openings, and the at least three openings may include the aforementioned first opening 221 and second opening 231. The openings are arranged along the axial direction of the valve device 100, and the support portion 24 is formed between two adjacent openings. In this way, the valve core 2 includes at least two support portions 24, which can provide more support for the sealing component 3, further reduce the deformation of the sealing component 3, and further reduce the risk of the sealing component 3 being scratched by the valve core 2.

[0052] like Fig.17 , Fig.18As shown, in another embodiment of the valve core 2, the valve core 2 has a through hole 27 and a throttling groove 28, the throttling groove 28 is recessed in the outer peripheral portion 211 of the valve core 2, one end of the through hole 27 is connected to the first channel 202, and the other end of the through hole 27 has a fourth opening 271 at the outer peripheral portion 211 of the valve core 2, and the throttling groove 28 extends along the circumference of the valve device 100, and along the circumference of the valve device 100, one end of the throttling groove 28 is connected to the through hole 27. When the refrigerant passes through the channel formed by the throttling groove 28 and the sealing component 3, the refrigerant can throttle and expand, that is, the valve device 100 is not only a flow regulating valve, but also an expansion valve. In other embodiments, one end of the throttling groove 28 can be directly connected to the flow port 20.

[0053] like Fig.19 , Fig. 20 As shown, in another embodiment of the valve core 2, the first opening 221 may be discontinuous, and the first opening 221 may include at least two sub-openings 2211, each of which is arranged at intervals along the circumference of the valve device 100, so that along the circumference of the valve device 100, the portion of the outer peripheral portion 211 located between two adjacent sub-openings 2211 can abut against the sealing component 3, thereby providing more support for the sealing component 3, further reducing the deformation of the sealing component 3, and further reducing the risk of the sealing component 3 being scratched by the valve core 2. Specifically, the central angle corresponding to the portion between adjacent sub-openings 2211 is less than one-third of the central angle corresponding to the sub-opening 2211, so that the impact on the flow rate can be reduced. The sub-opening 2211 can be a common shape such as a circle or a capsule.

[0054] 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 core (2), the valve core (2) having a communication channel (22), the valve core (2) comprising an outer peripheral portion (211), the communication channel (22) having a flow opening (20) in the outer peripheral portion (211); The valve device (100) comprises a sealing component (3), the sealing component (3) having a first communication port (31) and a second communication port (32), the first communication port (31) and the second communication port (32) being distributed at intervals along the circumference of the valve device (100), and along the radial direction of the valve device (100), the outer peripheral portion (211) of the valve core (2) abuts against the sealing component (3); The flow port (20) comprises a first opening (221) and a second opening (231); the valve core (2) comprises a support portion (24); along the axial direction of the valve device (100), the first opening (221) is located on one side of the support portion (24), and the second opening (231) is located on the other side of the support portion (24); The valve device (100) includes at least a first working state. In the first working state, a portion of the flow port (20) is opposite to and connected to the first connecting port (31), another portion of the flow port (20) is opposite to and connected to the second connecting port (32), and at least a portion of the support portion (24) is in contact with the sealing component (3).

2. The valve device according to claim 1, characterized in that The first opening (221) extends along the circumference of the valve device (100), and the second opening (231) extends along the circumference of the valve device (100); along the axial direction of the valve device (100), one side of the support portion (24) is adjacent to the first opening (221), and the other side of the support portion (24) is adjacent to the second opening (231); The first opening (221) and the second opening (231) are arranged separately; or, the support portion (24) has a notch channel (241), and the support portion (24) communicates with the first opening (221) and the second opening (231).

3. The valve device according to claim 2, characterized in that In the first working state, along the axial direction of the valve device (100), the flow port (20) is located between the two ends of the first communication port (31), and the flow port (20) is located between the two ends of the second communication port (32).

4. The valve device (100) according to claim 2 or 3, characterized in that: Along the axial direction of the valve device (100), a portion of the first opening (221) and a portion of the second opening (231) are staggered; along the axial direction of the valve device (100), a central angle corresponding to an overlapping portion of the first opening (221) and the second opening (231) is greater than or equal to a central angle corresponding to the first communication port (31); The valve device (100) includes a second working state. In the second working state, at least part of the first opening (221) is opposite to the first communication port (31), the first opening (221) is connected to the first communication port (31), and the second opening (231) is not connected to the first communication port (31).

5. The valve device according to claim 4, characterized in that Along the circumference of the valve device (100), one end of the first opening (221) is defined as a first end (223), and the other end of the first opening (221) is defined as a second end (224); defining a first direction, the first direction being parallel to the circumference of the valve device (100), the first direction pointing from the second end (224) to the first end (223), and along the first direction, the first end (223) protrudes compared to one end of the second opening (231), and the second end (224) is retracted compared to the other end of the second opening (231); Alternatively, along the first direction, the first end (223) protrudes relative to one end of the second opening (231), and the second end (224) is flush with the other end of the second opening (231); Alternatively, along the circumference of the valve device (100), the first end (223) protrudes compared to one end of the second opening (231), and the second end (224) protrudes compared to the other end of the second opening (231).

6. The valve device according to claim 5, characterized in that Along the radial direction of the valve device (100), the first communication port (31) and the second communication port (32) are located on both sides of the valve core (2); along the circumferential direction of the valve device (100), the angle between the two ends of the first opening (221) and the rotation axis of the valve core (2) is defined as a1, and the angle between the two ends of the second opening (231) and the rotation axis of the valve core (2) is defined as a2, and a1 and a2 are the same or substantially the same; The valve device (100) comprises a third working state and a fourth working state; In the third working state, the valve core (2) closes the first communication port (31), and the first opening (221) and the second opening (231) are not connected to the first communication port (31); In the fourth working state, the valve core (2) closes the second communication port (32), and the first opening (221) and the second opening (231) are not in communication with the second communication port (32).

7. The valve device according to claim 2, characterized in that The wall forming the first opening (221) comprises an end wall (222), and along the circumference of the valve device (100), the end wall (222) is located at both ends of the first opening (221), and the end wall (222) is in an arc shape; And / or, the wall forming the second opening (231) includes an end wall (222), and along the circumference of the valve device (100), the end wall (222) is located at both ends of the second opening (231), and the end wall (222) is in an arc shape.

8. The valve device according to claim 2, characterized in that The first opening (221) includes at least two sub-openings (2211), and each of the sub-openings (2211) is arranged at intervals along the circumference of the valve device (100); along the circumference of the valve device (100), the central angle corresponding to the portion between adjacent sub-openings (2211) is less than one third of the central angle corresponding to the sub-opening (2211).

9. The valve device according to any one of claims 2 to 8, characterized in that: The communication passage (22) comprises a first hole (202), a second hole (23) and a third hole (25), wherein the first hole (202) extends along the axial direction of the valve device (100), and the first hole (202) has a third opening (26) at one end of the valve core (2), and along the radial direction of the valve device (100), the second hole (23) extends from the first opening (221) to the inner side of the valve core (2) and is communicated with the first hole (202), and the third hole (25) extends from the second opening (231) to the inner side of the valve core (2) and is communicated with the first hole (202), the outer peripheral portion (211) of the valve core (2) is cylindrical or quasi-columnar, and the first hole (202) is coaxially or substantially coaxially arranged with the outer peripheral portion (211) of the valve device (100); Alternatively, the outer peripheral portion (211) of the valve core (2) is spherical or quasi-spherical; Alternatively, the outer peripheral portion (211) of the valve core (2) is conical or quasi-conical.

10. The valve device according to claim 9, characterized in that The valve core (2) has a throttling groove (28), the throttling groove (28) is recessed in the outer peripheral portion (211) of the valve core (2), and the throttling groove (28) extends along the circumferential direction of the valve device (100); The valve core (2) has a through hole (27), one end of the through hole (27) is in communication with the first channel (22), the other end of the through hole (27) has a fourth opening at the outer peripheral portion (211) of the valve core (2), and along the circumferential direction of the valve device (100), one end of the throttling groove (28) is in communication with the through hole (27); Alternatively, along the circumferential direction of the valve device (100), one end of the throttling groove (28) is connected to the flow port (20).

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