Valve device

Abstract

A valve device (100), comprising a valve body (10). The valve body is provided with a first port (11) and a second port (12); a first fluid path is formed between the first port and the second port; a first surface (21) is provided in the valve body; a first flow channel opening (22) is formed in the first surface; and the first fluid path extends and passes through the first flow channel opening. The valve device further comprises a moving member (30) located in the valve body; the moving member is driven to rotate around an axis R in multiple rotation ranges relative to the valve body; the multiple rotation ranges include a first rotation range and a second rotation range; when the moving member abutting against the first surface is located in the first rotation range, the moving member partially blocks the first flow channel opening so as to form a first throttling valve port having a circulating area changing along with the rotation of the moving member; and when the moving member abutting against the first surface is located in the second rotation range, the moving member opens the first flow channel opening to form a first straight-through valve port. According to this configuration, the valve device can selectively function as either an expansion valve or a straight-through valve.

Description

Valve device

[0001] This application is based on the Chinese patent application with application number: 202410174480.7 and application date of February 7, 2024 and the Chinese patent application with application number: 202422655784.3 and application date of October 31, 2024, and claims the priority of these two Chinese patent applications, all contents of which are hereby introduced into this application as a reference. Technical Field

[0002] The utility model relates to the technical field of valves, in particular to a valve device. Background Art

[0003] The vehicle thermal management system (TMS) is a crucial component of vehicles, particularly new energy vehicles. It controls the temperature of various vehicle components, ensuring they operate at optimal temperatures. To meet complex fluid control requirements, TMS systems typically include a variety of valves, each designed to perform different functions. For example, these valves may include expansion valves, through-flow valves, and shut-off valves. The presence of these valves increases the complexity of the TMS system, occupies more space, increases its failure rate, and introduces maintenance difficulties. Utility Model Content

[0004] In view of this, an embodiment of the present invention provides a valve device, which aims to reduce the number and types of valves in a vehicle thermal management system, thereby reducing the complexity of the vehicle thermal management system, reducing its space occupancy, reducing its failure rate, and improving its maintenance convenience.

[0005] The valve device provided by the embodiment of the present utility model includes a valve body, the valve body is provided with a first interface and a second interface, a first fluid path is provided between the first interface and the second interface, a first surface is provided in the valve body, a first flow channel opening is formed on the first surface, and the first fluid path extends through the first flow channel opening. The valve device also includes a moving part located in the valve body, the moving part is driven to rotate around an axis relative to the valve body in multiple rotation ranges, and the multiple rotation ranges include a first rotation range and a second rotation range; when the moving part abutting the first surface is in the first rotation range, the moving part partially blocks the first flow channel opening to form a first throttling valve opening whose flow area changes with the rotation of the movement; when the moving part abutting the first surface is in the second rotation range, the moving part opens the first flow channel opening to form a first straight-through valve opening.

[0006] In some embodiments, when the moving member abutting against the first surface is located in a third rotation interval among the plurality of rotation intervals, the moving member blocks the entire first flow channel opening to cut off the first fluid path.

[0007] In some embodiments, an end surface of the moving part facing the first surface is provided with a first flow opening, a second flow opening and a cutoff portion arranged along a direction around the axis. The cutoff portion prevents the fluid from passing through the moving part. A plane perpendicular to the axis is defined as a projection plane. When the moving part abutting the first surface is in the first rotation interval, the orthographic projections of the first flow opening and the first flow channel opening on the projection plane at least partially overlap, so that the first flow opening and the first flow channel opening cooperate to form a first throttle valve port. When the moving part abutting the first surface is in the second rotation interval, the orthographic projections of the second flow opening and the first flow channel opening on the projection plane at least partially overlap, so that the second flow opening and the first flow channel opening cooperate to form a first straight-through valve port. When the moving part abutting the first surface is in the third rotation interval, the orthographic projection of the cutoff portion on the projection plane covers the orthographic projection of the first flow channel opening on the projection plane, so that the first flow channel opening is completely blocked by the cutoff portion.

[0008] In some embodiments, the first flow opening is in the shape of an elongated slit extending in a direction around the axis.

[0009] In some embodiments, the moving member includes a movable valve plate. A flow groove is formed on an end surface of the movable valve plate facing away from the first surface. The width of the flow groove gradually decreases as it approaches the first surface. A first flow port is formed at the bottom of the flow groove and extends through the movable valve plate.

[0010] In some embodiments, the first flow channel opening is a fan-shaped or fan-annular through hole.

[0011] In some embodiments, the second flow port is a fan-shaped or fan-annular through hole penetrating the moving part, or is a fan-shaped or fan-annular notch.

[0012] In some embodiments, the valve body is further provided with a third interface. A second flow channel opening is further formed on the first surface. A second fluid path is provided between the first interface and the third interface. The second fluid path passes through the second flow channel opening. When the moving part abutting the first surface is in the first rotation interval, the moving part partially closes the first flow channel opening to form a first throttle valve opening, and closes the entire second flow channel opening to cut off the second fluid path. When the moving part abutting the first surface is in the third rotation interval, the moving part blocks the entire first flow channel opening to cut off the first fluid path, and partially closes the second flow channel opening to form a second throttle valve opening whose flow area changes as the moving part rotates.

[0013] In some embodiments, when the moving member abutting the first surface is in a fourth rotation interval among the plurality of rotation intervals, the moving member partially blocks the first flow channel opening to form a first throttle valve opening, and partially blocks the second flow channel opening to form a second throttle valve opening.

[0014] In some embodiments, when the moving member abutting the first surface is in the fifth rotation interval of the plurality of rotation intervals, the moving member blocks all first flow channel openings to cut off the first fluid path and closes all second flow channel openings to cut off the second fluid path.

[0015] In some embodiments, the first flow channel opening and the second flow channel opening are arranged at a distance from each other in a direction around the axis. The end surface of the moving part facing the first surface is provided with a first cut-off portion, a first flow opening, a second cut-off portion, a third flow opening and a third cut-off portion arranged in a direction around the axis. The first flow opening is located between the first cut-off portion and the second cut-off portion. The third flow opening is located between the second cut-off portion and the third cut-off portion. A plane defining a perpendicular axis is a projection plane. When the moving part abutting the first surface is in a first rotation interval, the orthographic projections of the first flow opening and the first flow channel opening on the projection plane at least partially overlap, and the orthographic projection of the first cut-off portion on the projection plane covers the orthographic projection of the second flow channel opening on the projection plane, so that the first flow opening and the first flow channel opening cooperate to form a first throttle valve opening, and the entire second flow channel opening is blocked by the first cut-off portion. When the moving member abutting the first surface is in the third rotation range, the orthographic projection of the third truncation portion on the projection surface covers the orthographic projection of the first flow channel opening on the projection surface, and the orthographic projections of the third flow channel opening and the second flow channel opening on the projection surface at least partially overlap, so that the entire first flow channel opening is blocked by the third truncation portion, and the second flow channel opening and the second flow channel opening cooperate to form a second throttle valve opening. When the moving member abutting the first surface is in the fourth rotation range, the orthographic projections of the first flow channel opening and the second flow channel opening on the projection surface at least partially overlap, and the orthographic projections of the third flow channel opening and the first flow channel opening on the projection surface at least partially overlap, so that the third flow channel opening and the first flow channel opening cooperate to form the first throttle valve opening, and the first flow channel opening and the second flow channel opening cooperate to form the second throttle valve opening. When the moving part abutting against the first surface is in the fifth rotation range, the orthographic projection of the third truncation portion on the projection surface covers the orthographic projection of the first flow channel opening on the projection surface, and the orthographic projection of the second truncation portion on the projection surface covers the orthographic projection of the second flow channel opening on the projection surface, so that the entire first flow channel opening is blocked by the third truncation portion, and the entire second flow channel opening is blocked by the second truncation portion.

[0016] In some embodiments, the moving member includes a movable valve plate, and a flow groove is provided on an end surface of the movable valve plate facing away from the first surface. The width of the flow groove gradually decreases as it approaches the first surface. A first flow opening, a second cutoff portion, and a third flow opening are formed at the bottom of the flow groove. The first flow opening and the third flow opening are in the form of elongated slits extending through the movable valve plate.

[0017] In some embodiments, when the moving member abuts the first surface in the second rotation range, the moving member opens the first flow channel opening to form a first straight-through valve opening and blocks all of the second flow channel openings to cut off the second fluid path. When the moving member abuts the first surface in the sixth rotation range among the plurality of rotation ranges, the moving member opens the second flow channel opening to form a second straight-through valve opening and blocks all of the first flow channel openings to cut off the first fluid path.

[0018] In some embodiments, when the moving part abutting the first surface is in the seventh rotation interval among multiple rotation intervals, the moving part partially opens the first flow channel opening and the second flow channel opening to form a first diverter valve opening and a second diverter valve opening, and the rotation of the moving part causes the flow area of ​​the first diverter valve opening and the second diverter valve opening to change in a negatively correlated manner.

[0019] In some embodiments, the first flow channel opening and the second flow channel opening are arranged at a distance from each other along the direction around the axis. The end surface of the moving part facing the first surface is provided with a second flow opening, a first truncation portion and a third truncation portion arranged along the direction around the axis. The third flow opening is located between the first truncation portion and the third truncation portion. A plane defining a vertical axis is a projection plane. When the moving part abutting the first surface is located in the second rotation interval, the orthographic projections of the second flow opening and the first flow channel opening on the projection plane at least partially overlap, and the orthographic projection of the third truncation portion on the projection plane covers the orthographic projection of the second flow channel opening on the projection plane, so that the second flow opening and the first flow channel opening cooperate to form a first straight-through valve port, and the entire second flow channel opening is blocked by the third truncation portion. When the moving member abutting the first surface is in the sixth rotational range, the orthographic projections of the second flow opening and the second flow channel opening on the projection plane at least partially overlap, and the orthographic projection of the first truncation portion on the projection plane covers the orthographic projection of the first flow channel opening on the projection plane, so that the second flow opening and the second flow channel opening cooperate to form a second straight-through valve opening, and the first flow channel opening is completely blocked by the first truncation portion. When the moving member abutting the first surface is in the seventh rotational range, the orthographic projection of the second flow opening on the projection plane partially overlaps with the orthographic projections of the first flow channel opening and the second flow channel opening on the projection plane, so that the second flow opening and the first flow channel opening cooperate to form a first diverter valve opening, and the second flow opening and the second flow channel opening cooperate to form a second diverter valve opening.

[0020] In some embodiments, the valve device further comprises a fixed valve plate located in the valve body, the fixed valve plate and the moving part being stacked along the extending direction of the axis, and the first surface being a surface of the fixed valve plate facing the moving part.

[0021] In some embodiments, the valve body is further provided with a second surface, the second surface forming a third flow opening, and the first fluid path further extends through the third flow opening. The first flow opening and the third flow opening are arranged spaced apart along the extension direction of the axis. The moving member is located between the first flow opening and the third flow opening and is driven to move between a first position and a second position. When the moving member is in the first position, the moving member abuts the first surface and separates from the second surface to open the third flow opening, so that the moving member in the first rotation range partially closes the first flow opening and opens the third flow opening, and the moving member in the second rotation range simultaneously opens the first flow opening and the third flow opening. When the moving member is in the second position, the moving member abuts the second surface and separates from the first surface to open the first flow opening, so that the moving member in the eighth rotation range among the multiple rotation ranges partially closes the third flow opening and opens the first flow opening, and the moving member in the ninth rotation range among the multiple rotation ranges simultaneously opens the first flow opening and the second flow opening.

[0022] In some embodiments, the moving member includes a first end face and a second end face that are opposite to each other along the extension direction of the axis. The moving member abuts the first surface via the first end face and abuts the second surface via the second end face. The first end face, the second end face, the first surface, and the second surface are all planar, and any two of them are parallel to each other.

[0023] In some embodiments, the first rotation interval and the eighth rotation interval are the same rotation interval, and the second rotation interval and the ninth rotation interval are the same rotation interval.

[0024] In some embodiments, the moving part includes a first movable valve plate and a second movable valve plate stacked along the extension direction of the axis. The first movable valve plate is closer to the first surface than the second movable valve plate. The first movable valve plate and the second movable valve plate are coupled to each other in synchronous rotation. The valve device also includes an elastic member, which is located between the first movable valve plate and the second movable valve plate, pressing the first movable valve plate toward the first surface so that the two are in contact, and pressing the second movable valve plate toward the second surface so that the two are in contact. Under the drive of the fluid medium from the first flow channel opening to the third flow channel opening, the first movable valve plate overcomes the pressure of the elastic member, moves along the axis away from the first surface until it is separated from the first surface, so that the moving part moves from the first position to the second position. Under the drive of the fluid medium from the third flow channel opening to the first flow channel opening, the second movable valve plate overcomes the pressure of the elastic member, moves along the axis away from the second surface until it is separated from the second surface, so that the moving part moves from the second position to the first position.

[0025] In some embodiments, the valve device further includes a first fixed valve plate and a second fixed valve plate. The first fixed valve plate, the moving member, and the second fixed valve plate are stacked along the axis. The moving member is positioned between the first and second fixed valve plates. The first surface is the surface of the first fixed valve plate facing the moving member, and the second surface is the surface of the second fixed valve plate facing the moving member.

[0026] According to the valve device provided by the present invention, the movable member can cooperate with the first flow channel opening to form a first throttle valve opening with a variable flow area, and can also rotate to cooperate with the first flow channel opening to form a first straight-through valve opening. Thus, the valve device can selectively perform the functions of an expansion valve and a straight-through valve. Therefore, the use of the valve device helps reduce the number and types of valves in a vehicle thermal management system, thereby reducing the complexity of the vehicle thermal management system, reducing its space occupation, lowering its failure rate, and improving its ease of maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] It should be understood that the following drawings only illustrate certain embodiments of the present invention and should not be considered to limit the scope.

[0028] It should be understood that the same or similar reference numerals are used in the drawings to identify the same or similar elements.

[0029] It should be understood that the drawings are merely schematic and that the sizes and proportions of elements in the drawings are not necessarily accurate.

[0030] FIG1 is a schematic cross-sectional view of a valve device according to an embodiment of the present invention.

[0031] FIG2 is a schematic structural diagram of a fixed valve plate of the valve device in FIG1 .

[0032] FIG3 is a schematic structural diagram of the moving parts of the valve device in FIG1 .

[0033] FIG. 4 is a schematic partial cross-sectional view taken along line AA in FIG. 3 .

[0034] FIG5 is a schematic structural diagram of a moving part of the valve device in FIG1 abutting against the first surface, wherein the moving part is located in a first rotation range.

[0035] FIG6 is a schematic structural diagram of a moving part of the valve device in FIG1 abutting against the first surface, wherein the moving part is located in a second rotation range.

[0036] FIG7 is a schematic structural diagram of a moving part of the valve device in FIG1 abutting against the first surface, wherein the moving part is located in a third rotation range.

[0037] FIG8 is a schematic structural diagram of a moving part according to another embodiment of the present invention.

[0038] FIG9 is a schematic structural diagram of a valve device according to another embodiment of the present invention.

[0039] FIG10 is a schematic structural diagram of the fixed valve plate of the valve device in FIG9 .

[0040] FIG11 is a schematic structural diagram of the moving parts of the valve device in FIG9.

[0041] FIG12 is a schematic structural diagram of the moving member of the valve device in FIG9 abutting against the first surface, wherein the moving member is located in the first rotation range.

[0042] FIG13 is a schematic structural diagram of the moving member of the valve device in FIG9 abutting against the first surface, wherein the moving member is located in the second rotation range.

[0043] FIG14 is a schematic structural diagram of the moving member of the valve device in FIG9 abutting against the first surface, wherein the moving member is located in the third rotation range.

[0044] FIG15 is a schematic structural diagram of the moving member of the valve device in FIG9 abutting against the first surface, wherein the moving member is located in the fourth rotation range.

[0045] FIG16 is a schematic structural diagram of the moving member of the valve device in FIG9 abutting against the first surface, wherein the moving member is located in the fifth rotation range.

[0046] FIG17 is a schematic structural diagram of the moving member of the valve device in FIG9 abutting against the first surface, wherein the moving member is located in the sixth rotation range.

[0047] FIG18 is a schematic structural diagram of the moving member of the valve device in FIG9 abutting against the first surface, wherein the moving member is located in the seventh rotation interval.

[0048] FIG19 is a schematic structural diagram of a valve device according to another embodiment of the present invention.

[0049] FIG. 20 is an exploded schematic diagram of a portion of the valve assembly of FIG. 19 .

[0050] FIG. 21 is a schematic cross-sectional view of a portion of the valve device of FIG. 19 .

[0051] FIG22 is a schematic structural diagram of two fixed valve plates and moving parts of the valve device in FIG19.

[0052] FIG23 is a schematic structural diagram of the first movable valve plate of the moving part in FIG22.

[0053] FIG24 is a schematic structural diagram of the second movable valve plate of the moving part in FIG22. DETAILED DESCRIPTION

[0054] Numerous specific details are set forth below to provide an understanding of the structure, function, and use of the embodiments described in the specification and illustrated in the accompanying drawings. It is understood that the embodiments described and illustrated herein are non-limiting examples, and thus it is recognized that the specific structural and functional details disclosed herein are representative and exemplary. Modifications and changes may be made to these embodiments without departing from the scope of the claims.

[0055] An embodiment of the present invention provides a valve device 100. By way of example only, the valve device 100 can be used in a thermal management system of a vehicle, particularly a new energy vehicle. The valve device 100 can also be used in other application scenarios, and the present invention does not impose any particular limitations thereon.

[0056] 1 , a valve device 100 includes a valve body 10 having a first port 11 and a second port 12. A first fluid path extending between the first port 11 and the second port 12 is defined within the valve body 10. The valve device 100 can be connected to an external pipeline via the first port 11 and the second port 12, allowing the fluid in the external pipeline to flow through the valve device 100, i.e., through the first fluid path.

[0057] Continuing with Figure 1 , the valve body 10 is provided with a first surface 21, on which a first flow passage 22 is formed. The first fluid path extends through the first flow passage 22. Continuing with Figure 1 , the valve device 100 further includes a moving member 30. The moving member 30 is supported within the valve body 10 and can be driven to rotate about an axis R within a plurality of rotational ranges.

[0058] By way of example only, referring to Figures 1 and 2, the valve device 100 further includes a fixed valve plate 20, which is stacked with a moving member 30 along the extending direction of an axis R. The fixed valve plate 20 is fixedly supported within the valve body 10 relative to the valve body 10, such that when the moving member 30 rotates about the axis R, the fixed valve plate 20 remains fixed relative to the valve body 10. The first surface 21 is the surface of the fixed valve plate 20 facing the moving member 30. It is contemplated that in other examples, the first surface may also be a portion of the inner wall surface of the valve body 10.

[0059] By way of example only, referring to FIG. 1 , the valve device 100 further includes a drive unit 40 for driving the movable member 30 to rotate about an axis R. By way of example only, the drive unit 40 may be an electric motor 40, the output shaft of which may be coupled to the movable member 30 to transmit torque to the movable member 30. It is contemplated that in other examples, the drive unit 30 may also be another device or mechanism capable of outputting torque, such as a pneumatic or hydraulic drive mechanism.

[0060] The moving member 30 can abut against the first surface 21. In the current example, the moving member 30 can always abut against the first surface 21. In other examples, the moving member 30 can remain in abutment with the first surface 21 or move along the extension direction of the axis R to separate from the first surface 21, that is, to allow reverse flow.

[0061] The multiple rotation ranges include a first rotation range and a second rotation range. Referring to FIG5 , when the moving member 30, abutting the first surface 21, is in the first rotation range, the moving member 30 partially blocks the first flow passage 22, forming a first throttle valve port 51. Here, as the moving member 30 rotates within the first rotation range, the flow area (or opening) of the first throttle valve port 51 changes as the moving member 30 rotates. Referring to FIG6 , when the moving member 30, abutting the first surface 21, is in the second rotation range, the moving member 30 opens the first flow passage 22, forming a first straight-through valve port 52.

[0062] According to the valve device 100 provided by the present invention, the movable member 30 can cooperate with the first flow passage 22 to form a first throttle valve port 51 with a variable flow area. It can also rotate with the first flow passage 22 to form a first straight-through valve port 52. Thus, the valve device 100 can selectively function as an expansion valve and a through-valve. Therefore, the use of the valve device 100 helps reduce the number and types of valves in a vehicle thermal management system, thereby reducing the complexity of the vehicle thermal management system, reducing its space occupation, lowering its failure rate, and improving its ease of maintenance.

[0063] The multiple rotation intervals may also include a third rotation interval. Referring to Figure 7, when the moving part 30 abutting the first surface 21 is in the third rotation interval, the moving part 30 can block the entire first flow channel opening 22 to cut off the first fluid path. By rotating, the moving part 30 can cooperate with the first flow channel opening 22 to block the first flow channel opening 22, thereby cutting off the first fluid path. Accordingly, in addition to realizing the functions of an expansion valve and a through valve, the valve device 100 can also realize the function of a shut-off valve. Therefore, the use of the valve device 100 helps to further reduce the number and types of valves in the vehicle thermal management system, thereby further reducing the complexity of the vehicle thermal management system, reducing its space occupancy, reducing its failure rate, and improving its maintenance convenience.

[0064] The present invention does not impose any particular restrictions on the structure of the moving member 30, as long as it can selectively partially block, completely block, or open the first flow channel 22 by rotating relative to the valve body 10. The structure of the moving member 30 is described below with examples.

[0065] 1 and 3 , the moving member 30 may have an end surface 31 and an end surface 32. The end surface 31 is located at the end of the moving member 30 facing the first surface 21, and the end surface 32 is located at the end of the moving member 30 facing away from the first surface 21. The end surface 31 of the moving member 30 may be provided with a first flow opening 33, a second flow opening 34, and a shutoff portion 35. The first flow opening 33, the second flow opening 34, and the shutoff portion 35 may be arranged along a direction around the axis R. The first flow opening 33 and the second flow opening 34 may be configured to allow a fluid medium to pass through the moving member 30, while the shutoff portion 35 may be configured to prevent the fluid from passing through the moving member 30.

[0066] By way of example only, the moving member 30 may be provided with two flow passages extending along the axis R. These two flow passages may extend to the end surface 31 to form a first flow opening 33 and a second flow opening 34, respectively. By way of example only, the cutout portion 35 may be a portion of the end surface 31, which is a solid surface. By way of example only, the end surface 31 may be provided with two cutout portions 35. Along the direction around the axis R, the first flow opening 33, one cutout portion 35, the second flow opening 34, and another cutout portion 35 may be arranged in sequence.

[0067] As shown in FIG5 , when the moving member 30 abutting the first surface 21 is in the first rotation range, the orthographic projections of the first circulation port 33 and the first flow channel opening 22 on the projection plane perpendicular to the axis R can at least partially overlap, so that the first circulation port 33 and the first flow channel opening 22 cooperate to form the first throttle valve opening 51. The overlapping area of ​​the projections of the first circulation port 33 and the first flow channel opening 22 is the flow area of ​​the first valve opening 51. As the moving member 30 rotates in the first rotation range, the overlapping area of ​​the projections of the first circulation port 33 and the first flow channel opening 22 changes accordingly, that is, the fluid area of ​​the first valve opening 51 changes accordingly. For example, as the moving member 30 rotates clockwise from the position in FIG5 , the fluid area of ​​the first valve opening 51 gradually increases. For another example, as the moving member 30 rotates counterclockwise from the position in FIG5 , the fluid area of ​​the first valve opening 51 gradually decreases.

[0068] As shown in Figure 6, when the moving part 30 abutting the first surface 21 is in the second rotation range, the positive projections of the second flow port 34 and the first flow channel port 22 on the projection plane can at least partially overlap, so that the first flow channel port 22 is open, and the second flow port 34 and the first flow channel port 22 cooperate to form a first straight valve port 52.

[0069] As shown in Figure 7, when the moving part 30 abutting against the first surface 21 is located in the third rotation zone, the orthographic projection of the truncation portion 35 on the projection surface can cover the orthographic projection of the first flow channel opening 22 on the projection surface, so that the entire first flow channel opening 22 is blocked by the truncation portion 34, thereby cutting off the first flow path.

[0070] With this configuration of the moving member 30, by rotating the moving member 30, the first flow channel opening 22 selectively cooperates with one of the first flow opening 33, the second flow opening 34, and the shutoff portion 35, thereby enabling the valve device 100 to selectively implement an expansion function, a straight-through function, and a shutoff function. Furthermore, with this configuration of the moving member 30, while achieving the aforementioned multiple functions, the valve device 100 has a relatively simple and compact structure.

[0071] The embodiment of the present invention does not impose any special restrictions on the structure of the first circulation port 33, as long as it can cooperate with the first flow channel port 22 to form the first throttle valve port 51. As an example, referring to Figure 3, the first circulation port 33 is in the shape of an elongated slit extending in the direction around the axis R. The first circulation port 33 in the shape of an elongated slit has a smaller circulation area, ensuring that the throttle valve port 51 formed in cooperation with the first flow channel port 22 has a smaller circulation area. In addition, due to the elongated slit extending in the direction around the axis R, when the moving part 30 rotates in the first rotation range, the rate of change of the overlapping area of ​​the projections of the first circulation port 33 and the first flow channel port 22 is small. Accordingly, fine adjustment of the circulation area of ​​the first valve port 51 can be achieved, thereby achieving precise control of the fluid flow rate.

[0072] The moving part 30 may include a movable valve plate 30. In the current example, the moving part 30 is the movable valve plate 30. In other examples, the moving part 30 may include a plurality of movable valve plates 30, or may include other components in addition to the movable valve plate 30. Referring to Figures 3 and 4, the end face 32 of the movable valve plate 30 facing away from the first surface 21 may be provided with a circulation groove 36. The width W of the circulation groove 36 may gradually decrease as it approaches the first surface 21. That is, the radial dimension of the circulation groove 36 may gradually decrease along the direction from the end face 32 of the movable valve plate 30 to the end face 31 of the movable valve plate 30. The first circulation port 33 may be formed at the bottom of the circulation groove 36 and pass through the movable valve plate 30.

[0073] Through this configuration of the flow groove 36, fluid entering the flow groove 36 generates pressure on the movable valve plate 30, helping to press the movable valve plate 30 against the first surface 21. This helps ensure a close fit between the end surface 31 and the first surface 21, preventing unwanted leakage. Furthermore, the width W of the flow groove 36 gradually decreases as it approaches the first surface 21, forming a V-shaped cross-section. This helps guide the fluid toward the first flow port 33.

[0074] The present embodiment of the utility model does not impose any particular restrictions on the structure of the first flow channel opening 22, as long as it can cooperate with the first flow opening 33 to form the first throttle valve opening 51 and cooperate with the second flow opening 34 to form the first straight valve opening 52. As an example, referring to Figure 2, the first flow channel opening 22 can be a fan-shaped or fan-shaped through-hole. The first flow channel opening implemented as a fan-shaped or fan-shaped through-hole has a relatively simple structure and, compared to the cylindrical valve device 100 structure, has a larger opening, providing a smoother fluid path and reducing pressure drop losses of the fluid medium.

[0075] The embodiment of the present invention does not impose any particular restrictions on the structure of the second flow port 34, as long as it can cooperate with the first flow channel port 22 to form the first straight valve port 52. In one example, referring to FIG3, the second flow port 34 can be a fan-shaped or fan-annular through hole that passes through the moving part 30. In another example, referring to FIG8, the second flow port 34 can be a fan-shaped or fan-annular notch that passes through the moving part 30. The second fluid port 34 implemented as a fan-shaped or fan-annular through hole or notch has a relatively simple structure, and compared with the columnar valve device 100 structure, its opening is larger, which can provide a smoother fluid path and reduce the pressure drop loss of the fluid medium.

[0076] Another embodiment of the present invention provides a valve device 100a. Valve device 100a is substantially identical to valve device 100, with the following description focusing on the differences between the two. For the sake of brevity, elements of valve device 100a that are identical to those of valve device 100 will be referenced using the same reference numerals to avoid duplication of description.

[0077] 9 and 10 , the valve body 10 of the valve device 100a may further include a third interface 13, and the first surface 21 may further be formed with a second flow channel 23. A second fluid path may be provided between the first interface 11 and the third interface 13, and the second fluid path may extend through the second flow channel 23. By way of example only, the first interface 11 may be an inlet, and the second interface 12 and the third interface 13 may both be outlets. The fluid medium may flow from the first interface through the first flow channel 22 to the second interface 12 and be discharged from the second interface 12, or from the first interface through the second flow channel 23 to the third interface 13 and be discharged from the third interface 13.

[0078] Referring to Figure 12 , when the moving member 30 abutting the first surface 21 is in the first rotation range, the moving member 30 can partially block the first flow channel opening 22 to form a first throttle valve opening 51, and can completely block the second flow channel opening 23 to cut off the second fluid path. Referring to Figure 14 , when the moving member 30 abutting the first surface 21 is in the third rotation range, the moving member 30 completely blocks the first flow channel opening 22 to cut off the first fluid path, and partially blocks the second flow channel opening 23 to form a second throttle valve opening 53. As the moving member 30 rotates within the third range, the flow area of ​​the second throttle valve opening 53 changes.

[0079] With this configuration, valve device 100a provides two fluid paths, selectively shutting off one fluid path and forming a throttle valve in the other. Consequently, valve device 100a can achieve flow diversion and both expansion and shutoff functions in each fluid path. This helps further reduce the number and types of valves in a vehicle thermal management system, thereby further reducing the system's complexity, space usage, and failure rate, while also improving its maintainability.

[0080] Furthermore, referring to Figure 15 , when the moving member 30 abutting the first surface 21 is in the fourth rotational range among the multiple rotational ranges, the moving member 30 can partially block the first flow passage 22 to form a first throttle valve port 51, and can also partially block the second flow passage 23 to form a second throttle valve port 53. With this configuration, the valve device 100a can simultaneously implement expansion functions for two fluid paths. Consequently, the valve device 100a can provide a richer range of functions, thereby meeting the more complex and diverse fluid control requirements of vehicle thermal management systems.

[0081] Furthermore, referring to FIG16 , when the moving member 30 abutting the first surface 21 is in the fifth rotational range among the multiple rotational ranges, the moving member 30 can completely block the first flow passage 22 to cut off the first fluid path, and completely block the second flow passage 23 to cut off the second fluid path. With this configuration, the valve device 100a can simultaneously cut off two fluid paths, thereby meeting the more complex and diverse fluid control requirements of a vehicle thermal management system.

[0082] Returning to Figure 13 , when the moving member 30 abutting the first surface 21 is in the second rotational range, the moving member 30 can open the first flow channel opening 22 to form the first straight-through valve opening 52 and can completely block the second flow channel opening 23 to cut off the second fluid path. Referring to Figure 17 , when the moving member 30 abutting the first surface 21 is in the sixth rotational range among the multiple rotational ranges, the moving member 30 can open the second flow channel opening 23 to form the second straight-through valve opening 54 and completely block the first flow channel opening 22 to cut off the first fluid path. With this configuration, the valve device 100a can selectively directly open one fluid path and block another, thereby meeting the more complex and diverse fluid control requirements of a vehicle thermal management system.

[0083] Referring to FIG18 , when the moving member 30 abutting the first surface 21 is in the seventh rotational interval among the plurality of rotational intervals, the moving member 30 can partially open the first flow channel opening 22 and the second flow channel opening 23 to form a first diverter valve opening 55 and a second diverter valve opening 56. As the moving member 30 rotates within the seventh rotational interval, the flow areas of the first diverter valve opening 55 and the second diverter valve opening 56 can change in a negative correlation, that is, the flow area of ​​one of the first diverter valve opening 55 and the second diverter valve opening 56 increases while the flow area of ​​the other decreases. By way of example only, as shown in FIG17 , in the seventh rotational interval, when the moving member 30 rotates counterclockwise in the figure, the flow area of ​​the first diverter valve opening 55 increases, while the flow area of ​​the second diverter valve opening 56 decreases; when the moving member 30 rotates clockwise in the figure, the flow area of ​​the second diverter valve opening 56 increases, while the flow area of ​​the first diverter valve opening 55 decreases. According to this configuration, the valve device 100a will be able to implement a proportional flow splitting function, adjusting the proportion of the fluid medium in the two fluid paths, thereby meeting more complex and diverse fluid control requirements of the vehicle thermal management system.

[0084] Returning to Figure 10 , the first flow channel opening 22 and the second flow channel opening 23 can be spaced apart along the direction around the axis R. Referring to Figure 11 , the end surface 31 of the moving member 30 can be provided with a first cutoff portion 35a, a second cutoff portion 35b, a third cutoff portion 35c, a first flow opening 33, a second flow opening 34, and a third flow opening 37, arranged along the direction around the axis R. Along the direction around the axis R, the first flow opening 33 can be located between the first cutoff portion 35a and the second cutoff portion 35b, the third flow opening 37 can be located between the second cutoff portion 35b and the third cutoff portion 35c, and the second flow opening can be located between the third cutoff portion 35c and the first cutoff portion 35a. In other words, along the direction around the axis R, i.e., clockwise in the figure, the first cutoff portion 35a, the first flow opening 33, the second cutoff portion 35b, the third flow opening 37, the third cutoff portion 35c, and the second flow opening 34 can be arranged in sequence.

[0085] By way of example only, the moving member 30 may be provided with three flow channels extending along the direction of the axis R. The three flow channels may extend to the end surface 31 to respectively form a first flow opening 33, a second flow opening 34, and a third flow opening 37. By way of example only, the first cut-off portion 35a, the second cut-off portion 35b, and the third cut-off portion 35c may each be a portion of the surface of the end surface 31, that is, each may be a solid surface.

[0086] 12 , when the moving member 30 abutting the first surface 21 is in the first rotation range, the orthographic projections of the first flow opening 33 and the first flow channel opening 22 on a projection plane perpendicular to the axis can at least partially overlap, so that the first flow opening 33 and the first flow channel opening 22 cooperate to form a first throttle valve opening 51. At the same time, the orthographic projection of the first blocking portion 35a on the projection plane can cover the orthographic projection of the second flow channel opening 23 on the projection plane, so that the second flow channel opening 23 is completely blocked by the first blocking portion 35a, thereby blocking the second fluid path.

[0087] Continuing with Figure 12 , as the moving member 30 rotates within the first rotation range, the area of ​​the overlapping projections changes, resulting in a change in the flow area of ​​the first valve port 51. Furthermore, when the moving member 30 rotates within the first rotation range, the orthographic projection of the first blocking portion 35a on the projection plane always overlaps the orthographic projection of the second flow channel port 23 on the projection plane, thereby consistently blocking the first fluid path.

[0088] Referring to FIG. 14 , when the moving member 30 abutting the first surface 21 is in the third rotation range, the orthographic projection of the third blocking portion 35c on the projection plane can overlap the orthographic projection of the first flow channel opening 22 on the projection plane, so that the first flow channel opening 22 is completely blocked by the third blocking portion 35c, thereby blocking the first fluid path. Simultaneously, the orthographic projections of the third flow opening 37 and the second flow channel opening 23 on the projection plane can at least partially overlap, so that the third flow opening 37 and the second flow channel opening 23 cooperate to form a second throttle valve opening 53.

[0089] Continuing with Figure 14 , when the moving member 30 rotates within the third rotation range, the orthographic projection of the third blocking portion 35c on the projection plane always overlaps the orthographic projection of the first flow passage 22 on the projection plane, thereby consistently blocking the first fluid path. Furthermore, as the moving member 30 rotates within the second rotation range, the area of ​​this overlapping projection changes, causing the flow area of ​​the second throttle valve opening 53 to change.

[0090] 15 , when the moving member 30 abutting the first surface 21 is in the fourth rotation range, the orthographic projections of the first flow opening 33 and the second flow channel opening 23 on the projection plane may at least partially overlap, so that the first flow opening 33 and the second flow channel opening 23 cooperate to form a first throttle valve opening 51. Simultaneously, the orthographic projections of the third flow opening 37 and the first flow channel opening 22 on the projection plane may at least partially overlap, so that the third flow opening 37 and the first flow channel opening 22 cooperate to form a second throttle valve opening 53.

[0091] Referring to Figure 16 , when the moving member 30 abutting the first surface 21 is in the fifth rotation range, the orthographic projection of the third blocking portion 35c on the projection plane can overlap the orthographic projection of the first flow channel opening 22 on the projection plane, so that the first flow channel opening 22 is completely blocked by the third blocking portion 35c, thereby blocking the first fluid path. Simultaneously, the orthographic projection of the second blocking portion 35b on the projection plane can overlap the orthographic projection of the second flow channel opening 23 on the projection plane, so that the second flow channel opening 23 is completely blocked by the second blocking portion 35b, thereby blocking the second fluid path.

[0092] In this way, as the moving member 30 rotates between the first, third, fourth, and fifth rotational ranges, the first and second flow passages 22 and 23 can respectively cooperate with the first flow passage 33 and the first shutoff portion 35a to achieve expansion and shutoff functions for the first and second fluid paths, respectively. They can respectively cooperate with the third shutoff portion 35c and the third flow passage 37 to achieve shutoff and expansion functions for the first and second fluid paths, respectively. They can respectively cooperate with the third flow passage 37 and the first flow passage 33 to achieve simultaneous expansion for the first and second fluid paths, and can respectively cooperate with the second shutoff portion 35b and the third shutoff portion 35c to achieve simultaneous shutoff functions for the first and second fluid paths. Consequently, the valve device 100a can meet the complex fluid control requirements of a vehicle thermal management system.

[0093] 9 and 11 , the moving part 30 may include a movable valve plate 30. In the current example, the moving part 30 is the movable valve plate 30. The end face 32 of the moving part 30, i.e., the movable valve plate 30, may be provided with a circulation groove 36. The width of the circulation groove 36 gradually decreases as it approaches the first surface 21. That is, along the direction from the end face 32 of the movable valve plate 30 to the end face 31 of the movable valve plate 30, the size of the circulation groove 36 in the radial direction of the movable valve plate 30 gradually decreases. The first circulation port 33, the second truncation portion 35b, and the third circulation port 37 may be formed at the bottom of the circulation groove 36. The first circulation port 33 and the third circulation port 37 may be in the form of an elongated slit that passes through the movable valve plate 30. The second truncation portion 35b may be a solid portion located between the first circulation port 33 and the third circulation port 37.

[0094] With this configuration of the flow groove 36, fluid entering the flow groove 31 can generate pressure on the movable valve plate 30, helping to press the movable valve plate 30 against the first surface 21. This helps ensure a close fit between the first side surface 31 and the first surface 21, preventing unwanted leakage. Furthermore, the width W of the flow groove 36 gradually decreases as it approaches the first surface 21, forming a V-shaped cross-section. This helps guide the fluid toward the first flow opening 33. The first flow opening 33, the second truncation portion 35b, and the third flow opening 37 are all formed at the bottom of the flow groove 36. This configuration offers at least two advantages. Firstly, this configuration increases the size of the flow groove 36 about the axis R, thereby generating a greater compressive force and more effectively guiding the fluid toward the first flow opening 33 and the third flow opening 37. Secondly, the movable valve plate 30 with this configuration has a more compact and simpler structure compared to a system that provides two flow grooves 36, one for each of the first flow opening 33 and the third flow opening 37.

[0095] Referring to FIG. 13 , when the moving member 30 abutting the first surface 21 is in the second rotation range, the orthographic projections of the second flow opening 34 and the first flow channel opening 22 on the projection plane at least partially overlap, so that the second flow opening 34 and the first flow channel opening 22 cooperate to form the first straight valve port 52. Simultaneously, the orthographic projection of the third blocking portion 35c on the projection plane covers the orthographic projection of the second flow channel opening 23 on the projection plane, so that the second flow channel opening 23 is completely blocked by the third blocking portion 35c, and the second fluid path is cut off.

[0096] 17 , when the moving member 30 abutting the first surface 21 is in the sixth rotational range of the plurality of rotational ranges, the orthographic projections of the second flow opening 34 and the second flow channel opening 23 on the projection plane at least partially overlap, such that the second flow opening 34 and the second flow channel opening 23 cooperate to form the second through-valve port 54. Simultaneously, the orthographic projection of the first blocking portion 35a on the projection plane covers the orthographic projection of the first flow channel opening 22 on the projection plane, such that the first flow channel opening 22 is completely blocked by the first blocking portion 35a, thereby blocking the first fluid path.

[0097] 18 , when the moving member 30 abutting the first surface 21 is in the seventh rotational range of the plurality of rotational ranges, the orthographic projection of the second flow opening 34 on the projection plane partially overlaps with the orthographic projections of the first flow channel opening 22 and the second flow channel opening 23 on the projection plane, such that the second flow opening 34 and the first flow channel opening 22 cooperate to form a first diverter valve opening 55, and the second communication opening 34 and the second flow channel opening 23 cooperate to form a second diverter valve opening 56. That is, referring to FIG10 and FIG11 , the minimum distance D1 between the first flow channel opening 22 and the second flow channel opening 23 in the direction about the axis R is less than the dimension D2 of the second flow opening 34 in the direction about the axis R, and the maximum distance D3 between the first flow channel opening 22 and the second flow channel opening 23 in the direction about the axis R is greater than the dimension D2, such that when the moving member 30 is in the seventh rotational range, the orthographic projections of the first flow channel opening 22 and the second flow channel opening 23 can simultaneously partially overlap with the orthographic projection of the second flow opening 34.

[0098] In this way, as the moving member 30 rotates between the second, sixth, and seventh rotational ranges, the first and second flow passages 22 and 23 can cooperate with the second flow passage 34 and third shutoff portion 35c, respectively, to achieve direct flow and shutoff functions for the first and second fluid paths, respectively. They can also cooperate with the first shutoff portion 35a and second flow passage 34, respectively, to achieve shutoff and direct flow functions for the first and second fluid paths, respectively. Furthermore, they can simultaneously cooperate with the second flow passage 34 to achieve proportional flow diversion for the first and second fluid paths. Consequently, the valve device 100a can meet the complex fluid control requirements of a vehicle thermal management system.

[0099] Another embodiment of the present invention provides a valve device 100b. Valve device 100b is substantially identical to valve device 100, with the following description focusing on the differences between the two. For the sake of brevity, elements of valve device 100b that are identical to those of valve device 100 will be referenced using the same reference numerals, with duplicate description omitted where appropriate.

[0100] Referring to Figure 19 , the valve body 10 of the valve device 100b is provided with a first surface 21a and a second surface 21b. The first surface 21a is provided with a first flow opening 22a, and the second surface 21b is provided with a third flow opening 22b. The first fluid path between the first interface 11 and the second interface 12 passes through the first flow opening 22a and the second flow opening 22b. The first flow opening 22a and the third flow opening 22b are spaced apart in the direction extending along the axis R. In other words, the first surface 21a and the second surface 21b are spaced apart in the direction extending along the axis R.

[0101] Continuing with Figure 19 , the moving member 30 is positioned between the first flow channel opening 22a and the third flow channel opening 22b, that is, between the first surface 21a and the second surface 21b. The moving member 30 can be driven to move between a first position and a second position along the direction extending along the axis R. In other words, the moving member 30 can move between the first position and the second position along the direction extending along the axis R, and can also rotate within a plurality of rotational ranges along a direction around the axis R.

[0102] When the moving member 30 is in the first position, the moving member 30 abuts the first surface 21a to cooperate with the first flow channel opening 22a, and separates from the second surface 21b to open the third flow channel opening 22b. When the moving member 30 is in the first position and in the first rotation range, the moving member 30 partially closes the first flow channel opening 22a to form a throttle valve opening and opens the third flow channel opening 22b. When the moving member 30 is in the first position and in the second rotation range, the moving member 30 simultaneously opens the first flow channel opening 22a and the third flow channel opening 22b.

[0103] When the moving member 30 is in the second position, the moving member 30 abuts the second surface 21b to cooperate with the third flow channel opening 22b, and separates from the first surface 21a to open the first flow channel opening 22a. When the moving member 30 is in the second position and in the eighth rotational range among the plurality of rotational ranges, the moving member 30 partially closes the third flow channel opening 22b to form a throttle valve opening and opens the first flow channel opening 22a. When the moving member 30 is in the second position and in the ninth rotational range among the plurality of rotational ranges, the moving member 30 simultaneously opens the first flow channel opening 22a and the third flow channel opening 22b.

[0104] When the fluid medium flows from the first interface 11 to the second interface 12, the moving part 30 can be located in the first position, so that the moving part 30 abuts the first surface 21a and is separated from the second surface 21b. Since the moving part 30 is separated from the second surface 21b, the third flow channel 22b will be opened, and the fluid medium will flow directly to the first flow channel 22a through the third flow channel 22b, which helps to reduce flow resistance. At this time, if the moving part 30 is located in the first rotation range, the moving part 30 will partially close the third flow channel 22b to form a throttle valve port, thereby realizing the expansion function; if the moving part 30 is located in the second rotation range, the cooperation between the moving part 30 and the first flow channel 22a will open the first flow channel 22a, thereby realizing the straight-through function. It can be seen that for the flow direction from the first interface 11 to the second interface 12, the valve device 100b can realize the expansion function and the straight-through function.

[0105] When the fluid medium flows from the second interface 12 to the first interface 11, the moving part 30 can be located in the second position, so that the moving part 30 abuts the second surface 21b and is separated from the first surface 21a. Since the moving part 30 is separated from the first surface 21a, the first flow channel 22a will be opened, and the fluid medium will flow directly to the third flow channel 22c through the first flow channel 22a, which helps to reduce flow resistance. At this time, if the moving part 30 is located in the eighth rotation interval, the moving part 30 will partially close the first flow channel 22a to form a throttle valve port, thereby realizing the expansion function; if the moving part 30 is located in the ninth rotation interval, the cooperation between the moving part 30 and the third flow channel 22b will open the third flow channel 22b, thereby realizing the straight-through function. It can be seen that for the flow direction from the second interface 12 to the first interface 11, the valve device 100b can also realize the expansion function and the straight-through function.

[0106] It can be seen that the valve device 100b can provide expansion function and straight-through function for the fluid medium flowing in both directions along the first path, thereby meeting the more complex and diverse fluid control requirements of the vehicle thermal management system.

[0107] Continuing with Figure 19 , the moving member 30 includes a first end face 31a and a second end face 31b, located on opposite sides of the moving member 30 along the extension direction of the axis R. The moving member 30 abuts the first surface 21a via the first end face 31a, and abuts the second surface 21b via the second end face 31b. The first end face 31a, the second end face 31b, the first surface 21a, and the second surface 21b are all planar, and any two of them are parallel to each other. Because the first end face 31a, the second end face 31b, the first surface 21a, and the second surface 21b of the moving member 30 are all planar and parallel to each other, the corresponding end faces of the moving member 30 will closely abut the corresponding surfaces regardless of whether the moving member 30 is in the first or second position. This parallel and close contact helps to achieve a better seal, ensuring a tighter abutment between the moving member 30 and preventing leakage of the fluid medium. Furthermore, the planar and mutually parallel design simplifies the processing and manufacturing of the parts, facilitating subsequent maintenance and replacement.

[0108] Continuing with FIG. 19 , in some examples, the moving member 30 may include two movable valve plates 30 a and 30 b, namely, a first movable valve plate 30 a and a second movable valve plate 30 b. The first movable valve plate 30 a and the second movable valve plate 30 b are stacked along the axis R, with the first movable valve plate 30 a being closer to the first surface 21 a than the second movable valve plate 30 b. The first movable valve plate 30 a and the second movable valve plate 30 b are coupled together so that they rotate synchronously about the axis R.

[0109] 21 , the valve device 100b further includes an elastic member 50 positioned between the first movable valve plate 30a and the second movable valve plate 30b. The elastic member 50 urges the first movable valve plate 30a toward the first surface 21a, causing the first surface 21a and the first movable valve plate 30a to abut against each other. Furthermore, the elastic member 50 urges the second movable valve plate 30b toward the second surface 21b, causing the second surface 21b and the second movable valve plate 30b to abut against each other.

[0110] Along the flow direction from the second interface 12 to the first interface 11, driven by the fluid medium from the first flow channel opening 22a to the second flow channel opening 22b, the first movable valve plate 30a will overcome the pressure of the elastic member 50 and move along the axis R away from the first surface 21a until it is separated from the first surface 21a, so that the moving member 30 moves from the first position to the second position.

[0111] Along the flow direction from the first interface 11 to the second interface 12, driven by the fluid medium from the second flow channel opening 22b to the first flow channel opening 22a, the second movable valve plate 30b overcomes the pressure of the elastic member 50 and moves along the axis R away from the second surface 21b until it is separated from the second surface 21b, so that the moving member 30 moves from the second position to the first position.

[0112] With this structure, through the cooperation of the first and second movable valve plates 30a, 30b, and the elastic member 50, the movable member 30 can automatically adjust its position according to changes in the flow direction of the fluid medium, allowing the valve device 100b to automatically adapt to changes in flow direction. Thus, the movement of the movable member 30 between the first and second positions is dependent on changes in flow direction, meaning that the valve device 100b can automatically adjust to changes in flow direction without the need for external power input, thereby improving the response speed and efficiency of flow direction switching.

[0113] The elastic member 50 can be implemented in a variety of ways. For example, the elastic member 50 can be a compression spring. In another example, the elastic member 50 can be an elastic pad made of an elastic material such as rubber. In another example, the elastic member 50 can include a pair of magnetic members, respectively attached to the two movable valve plates 30a and 30b, with opposite magnetic poles facing each other.

[0114] The valve device 100b may include multiple elastic members 50 or only one elastic member 50. In the example where the valve device 100b includes multiple elastic members 50, the multiple elastic members 50 may be arranged between the two movable valve plates 30 at intervals around the axis. This makes the resetting action of the movable valve plates 30 more balanced and stable. In the example where the valve device 100b includes only one elastic member 50, the elastic member 50 may be arranged coaxially with the axis R. This ensures that the force of the elastic member 50 acts along the axis R, thereby making the resetting action of the movable valve plates 30 more stable and reliable.

[0115] A limiting structure may be provided between the first movable valve plate 30a and the second movable valve plate 30b to keep the first movable valve plate 30a and the second movable valve plate 30b rotating synchronously around the axis R.

[0116] As an implementation method, referring to Figures 20, 22 to 24, the first movable valve plate 30a is provided with at least one limiting recess 38a that is recessed away from the second movable valve plate 30b, and the second movable valve plate 30b is provided with at least one limiting protrusion 38b that protrudes toward the first movable valve plate 30a, and the at least one limiting recess 38a can respectively receive at least one limiting protrusion 38b.

[0117] As an alternative implementation, the first movable valve plate 30a may be provided with at least one limiting protrusion 38b recessed away from the second movable valve plate 30b, while the second movable valve plate 30b may be provided with at least one limiting recess 38a protruding toward the first movable valve plate 30a.

[0118] 21 and 23 , the first movable valve plate 30a may be provided with a first communication port 33 and a second communication port 34. In some examples, the first movable valve plate 30a may also be provided with a circulation groove 36. The exemplary configurations of the first communication port 33, the second communication port 34 and the circulation groove 36 and their advantages can be referred to the description in the above embodiment of the valve device 100 and will not be repeated here. When the moving member 30 is located in the first rotation range, the coordination between the first flow channel port 22 and the first communication port 33 can be referred to FIG5 and the corresponding description. When the moving member 30 is located in the second rotation range, the coordination between the first flow channel port 22 and the second communication port 34 can be referred to FIG6 and the corresponding description.

[0119] 21 and 24 , the second movable valve plate 30b may also be provided with a first connecting port 33 and a second connecting port 34. In some examples, the second movable valve plate 30b may also be provided with a circulation groove 36. The exemplary construction of the first connecting port 33, the second connecting port 34 and the circulation groove 36 and their advantages can be referred to the description in the above embodiment of the valve device 100 and will not be repeated here. When the moving part 30 is located in the eighth rotation interval, the coordination of the third flow channel port 23 and the first connecting port 33 can be referred to the coordination and corresponding description of the first flow channel port 22 and the first connecting port 33 in FIG5 . When the moving part 30 is located in the ninth rotation interval, the coordination of the first flow channel port 22 and the second connecting port 34 can be referred to the coordination and corresponding description of the first flow channel port 22 and the first connecting port 33 in FIG6 .

[0120] Furthermore, in some examples, the first rotation interval and the eighth rotation interval can be the same rotation interval, and the second rotation interval and the ninth rotation interval can be the same rotation interval. In this way, the rotation control logic of the moving member 30 when the movable valve plate 30a abuts the first surface 21a is the same as the rotation control logic of the moving member 30 when the movable valve plate 30b abuts the second surface 21b, which helps to reduce the difficulty of rotating the moving member 30.

[0121] By way of example only, the orthographic projections of the first and third flow passage openings 22a, 22b on a projection plane perpendicular to the axis R overlap. This eliminates the need for excessive detours and bends when the fluid medium flows between the two flow passage openings 22a, 22b, thereby helping to reduce flow resistance. Furthermore, the orthographic projections of the first communication opening 33 of the first movable valve plate 30a and the first communication opening 33 of the second movable valve plate 30b on the projection plane overlap, and the orthographic projections of the second communication opening 34 of the first movable valve plate 30a and the second communication opening 34 of the second movable valve plate 30b on the projection plane overlap. Thus, the first rotation range and the eighth rotation range are the same rotation range, and the second rotation range and the ninth rotation range are the same rotation range.

[0122] With reference to Figures 19 to 22, the valve device 100b may include a first fixed valve plate 21a and a second fixed valve plate 21b. The first fixed valve plate 21a, the moving member 30, and the second fixed valve plate 21b may be stacked along the extending direction of the axis R. The moving member 30 may be located between the first fixed valve plate 21a and the second fixed valve plate 21b. The first surface 21a may be the surface of the first fixed valve plate 20a facing the moving member 30, and the second surface 21b may be the surface of the second fixed valve plate 20b facing the moving member 30. It is contemplated that in other examples, the first surface 21a and the second surface 21b may be portions of the inner wall surface of the valve body 10.

[0123] Referring to Figure 19, the first interface 11 is connected to the second flow channel opening 22b, and the second interface 12 is connected to the first flow channel opening 22a. The cross-sectional area of ​​the first interface 11 can be substantially the same as that of the second flow channel opening 22b, while the cross-sectional area of ​​the second interface 12 can be substantially the same as that of the first flow channel opening 22a. With this configuration, when the valve device 100b is in a straight-through state, the fluid medium can pass through the valve device 100b smoothly without causing significant pressure changes or gas-liquid changes, which helps achieve precise control of flow rate and flow velocity.

[0124] This article discusses partially blocking, opening, and partially opening a flow orifice. Partially blocking a flow orifice forms a throttle valve orifice. A throttle valve orifice has a small flow area, causing the high-pressure refrigerant to experience a sudden drop in pressure and simultaneous evaporation when passing through the throttle valve orifice, thereby achieving expansion and exhibiting a cooling effect. An open flow orifice forms a straight-through valve orifice. A straight-through valve orifice has a large flow area, allowing the fluid medium to flow through the straight-through valve orifice with minimal flow resistance. For example, the flow area of ​​the straight-through valve orifice can be approximately equal to the flow area of ​​the flow orifice itself, for example, the flow area of ​​the straight-through valve orifice can be no less than 80% of the flow area of ​​the flow orifice itself. A partially opening flow orifice forms a diverter valve orifice. Although the flow area of ​​the diverter valve orifice is smaller than that of the straight-through valve orifice, the flow area of ​​the diverter valve orifice is larger than that of the throttle valve orifice, resulting in no or insignificant evaporation of the fluid medium when flowing through the diverter valve orifice.

[0125] The rotation interval mentioned herein may refer to a position interval of the moving part in a direction around the axis R. A rotation interval may include multiple consecutive positions of the moving part in a direction around the axis R, or may include only one position.

[0126] It should be noted that the various elements described in the above specific embodiments can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, the present invention will not further describe various possible combinations.

[0127] It should be understood that multiple components and / or parts can be provided by a single integrated component or part. Alternatively, a single integrated component or part can be divided into separate multiple components and / or parts. The disclosure "a" or "an" used to describe a component or part does not mean to exclude other components or parts.

[0128] It should be understood that although the terms "first" or "second" may be used in the present invention to describe various elements (such as the first throttle valve port and the second throttle valve port), these elements are not defined by these terms, and these terms are only used to distinguish one element from another.

[0129] The basic principles of the present invention have been described above in conjunction with specific embodiments. However, it should be noted that the advantages, strengths, and effects mentioned in the present invention are merely illustrative and not restrictive, and should not be construed as necessarily possessed by each embodiment of the present invention. Furthermore, the specific details disclosed above are provided for illustrative purposes and to facilitate understanding, and are not intended to be limiting. These details do not necessarily limit the present invention to being implemented using these specific details.

[0130] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A valve device, comprising a valve body, the valve body having a first interface and a second interface, a first fluid path defined between the first interface and the second interface, a first surface defined within the valve body, a first flow channel formed on the first surface, the first fluid path extending through the first flow channel, and characterized in that: The valve device further includes a moving member located within the valve body, the moving member being driven to rotate about an axis relative to the valve body within a plurality of rotation intervals, the plurality of rotation intervals including a first rotation interval and a second rotation interval; When the moving member abutting against the first surface is located in the first rotation range, the moving member partially blocks the first flow channel opening to form a first throttle valve opening whose flow area changes with the rotation of the moving member; When the moving member abutting against the first surface is located in the second rotation range, the moving member opens the first flow channel opening to form a first straight valve opening.

2. The valve device according to claim 1, characterized in that When the moving member contacting the first surface is located in a third rotation interval among the plurality of rotation intervals, the moving member blocks the entire first flow channel opening to cut off the first fluid path.

3. The valve device according to claim 2, characterized in that An end surface of the moving part facing the first surface is provided with a first flow port, a second flow port, and a cutoff portion arranged along a direction around the axis, the cutoff portion preventing fluid from passing through the moving part, and a plane perpendicular to the axis is defined as a projection plane; When the moving member abutting against the first surface is in the first rotation range, the orthographic projections of the first flow port and the first flow channel opening on the projection plane at least partially overlap, so that the first flow port and the first flow channel opening cooperate to form the first throttle valve opening; When the moving member abutting against the first surface is in the second rotation range, the orthographic projections of the second flow opening and the first flow channel opening on the projection plane at least partially overlap, so that the second flow opening and the first flow channel opening cooperate to form the first through-valve port; When the moving part abutting the first surface is located in the third rotation range, the orthographic projection of the truncation portion on the projection surface covers the orthographic projection of the first flow channel opening on the projection surface, so that the entire first flow channel opening is blocked by the truncation portion.

4. The valve device according to claim 3, characterized in that The first flow opening is in the shape of an elongated slit extending in a direction around the axis.

5. The valve device according to claim 4, characterized in that The moving part includes a movable valve plate, and a flow groove is provided on the end surface of the movable valve plate facing away from the first surface. The width of the flow groove gradually decreases as it approaches the first surface. The first flow port is formed at the bottom of the flow groove and passes through the movable valve plate.

6. The valve device according to claim 3, characterized in that The first flow channel opening is a fan-shaped or fan-annular through hole; and / or the second flow opening is a fan-shaped or fan-annular through hole passing through the moving part, or is a fan-shaped or fan-annular notch.

7. The valve device according to claim 1, characterized in that The valve body is further provided with a third interface, the first surface is further formed with a second flow channel opening, a second fluid path is provided between the first interface and the third interface, and the second fluid path passes through the second flow channel opening; When the moving member abutting against the first surface is located in the first rotation range, the moving member partially closes the first flow channel opening to form the first throttle valve opening, and closes the entire second flow channel opening to cut off the second fluid path; When the moving part abutting the first surface is in the third rotation range, the moving part blocks the entire first flow channel opening to cut off the first fluid path, and partially closes the second flow channel opening to form a second throttle valve opening whose flow area changes with the rotation of the moving part.

8. The valve device according to claim 7, characterized in that When the moving member abutting the first surface is located in a fourth rotation interval among the plurality of rotation intervals, the moving member partially blocks the first flow channel opening to form the first throttle valve opening, and partially blocks the second flow channel opening to form the second throttle valve opening.

9. The valve device according to claim 8, wherein When the moving member contacting the first surface is located in the fifth rotation interval of the plurality of rotation intervals, the moving member blocks all of the first flow channel openings to cut off the first fluid path, and closes all of the second flow channel openings to cut off the second fluid path.

10. The valve device according to claim 9, characterized in that The first flow channel opening and the second flow channel opening are arranged at a distance from each other along the direction around the axis. The end surface of the moving part facing the first surface is provided with a first truncation portion, a first flow opening, a second truncation portion, a third flow opening and a third truncation portion arranged along the direction around the axis. The first flow opening is located between the first truncation portion and the second truncation portion, and the third flow opening is located between the second truncation portion and the third truncation portion. A plane perpendicular to the axis is defined as a projection plane. When the moving member abutting the first surface is located in the first rotation range, the orthographic projections of the first flow opening and the first flow channel opening on the projection plane at least partially overlap, and the orthographic projection of the first truncation portion on the projection plane covers the orthographic projection of the second flow channel opening on the projection plane, so that the first flow opening and the first flow channel opening cooperate to form the first throttle valve port, and the entire second flow channel opening is blocked by the first truncation portion; When the moving member abutting the first surface is located in the third rotation range, the orthographic projection of the third truncation portion on the projection plane covers the orthographic projection of the first flow channel opening on the projection plane, and the orthographic projections of the third flow channel opening and the second flow channel opening on the projection plane at least partially overlap, so that the entire first flow channel opening is blocked by the third truncation portion, and the second flow channel opening and the second flow channel opening cooperate to form the second throttle valve opening; When the moving member abutting the first surface is located in the fourth rotation range, the orthographic projections of the first flow opening and the second flow channel opening on the projection plane at least partially overlap, and the orthographic projections of the third flow opening and the first flow channel opening on the projection plane at least partially overlap, so that the third flow opening and the first flow channel opening cooperate to form the first throttle valve opening, and the first flow opening and the second flow channel opening cooperate to form the second throttle valve opening; When the moving part abutting against the first surface is located in the fifth rotation range, the orthographic projection of the third truncation portion on the projection surface covers the orthographic projection of the first flow channel opening on the projection surface, and the orthographic projection of the second truncation portion on the projection surface covers the orthographic projection of the second flow channel opening on the projection surface, so that the entire first flow channel opening is blocked by the third truncation portion, and the entire second flow channel opening is blocked by the second truncation portion.

11. The valve device according to claim 10, characterized in that The moving part includes a movable valve plate, and the end surface of the movable valve plate facing away from the first surface is provided with a circulation groove, the width of the circulation groove gradually decreases as it approaches the first surface, the first circulation port, the second truncation portion and the third circulation port are formed at the bottom of the circulation groove, and the first circulation port and the third circulation port are in the form of slender slits passing through the movable valve plate.

12. The valve device according to claim 7, characterized in that When in the second rotation range in contact with the first surface, the moving member opens the first flow channel opening to form a first straight valve opening, and blocks the entire second flow channel opening to cut off the second fluid path; When the moving member contacting the first surface is located in a sixth rotation interval among the plurality of rotation intervals, the moving member opens the second flow channel opening to form a second through valve opening and blocks all of the first flow channel openings to cut off the first fluid path.

13. The valve device according to claim 12, characterized in that When the moving part abutting against the first surface is located in the seventh rotation interval among the multiple rotation intervals, the moving part partially opens the first flow channel opening and the second flow channel opening to form a first diverter valve opening and a second diverter valve opening, and the rotation of the moving part causes the flow areas of the first diverter valve opening and the second diverter valve opening to change in a negatively correlated manner.

14. The valve device according to claim 13, characterized in that The first flow channel opening and the second flow channel opening are spaced apart from each other along the direction around the axis; the end surface of the moving member facing the first surface is provided with a second flow channel opening, a first truncation portion, and a third truncation portion arranged along the direction around the axis; the third flow channel opening is located between the first truncation portion and the third truncation portion; a plane perpendicular to the axis is defined as a projection plane; When the moving member abutting the first surface is located in the second rotation range, the orthographic projections of the second flow opening and the first flow channel opening on the projection plane at least partially overlap, and the orthographic projection of the third truncation portion on the projection plane covers the orthographic projection of the second flow channel opening on the projection plane, so that the second flow opening and the first flow channel opening cooperate to form the first through-valve port, and the entire second flow channel opening is blocked by the third truncation portion; When the moving member abutting the first surface is located in the sixth rotation range, the orthographic projections of the second flow opening and the second flow channel opening on the projection plane at least partially overlap, and the orthographic projection of the first truncation portion on the projection plane covers the orthographic projection of the first flow channel opening on the projection plane, so that the second flow opening and the second flow channel opening cooperate to form the second through-valve port, and the first flow channel opening is completely blocked by the first truncation portion; When the moving part abutting against the first surface is located in the seventh rotation range, the orthographic projection of the second flow port on the projection plane partially overlaps with the orthographic projections of the first flow port and the second flow port on the projection plane, so that the second flow port and the first flow port cooperate to form the first diverter valve port, and the second flow port and the second flow port cooperate to form the second diverter valve port.

15. The valve device according to any one of claims 1 to 14, characterized in that The valve device further includes a fixed valve plate located in the valve body, the fixed valve plate and the moving part are stacked along the extending direction of the axis, and the first surface is a surface of the fixed valve plate facing the moving part.

16. The valve device according to claim 1, wherein The valve body is further provided with a second surface, the second surface being formed with a third flow channel opening, the first fluid path also extending through the third flow channel opening, the first flow channel opening and the third flow channel opening being arranged spaced apart along the extending direction of the axis, the moving member being located between the first flow channel opening and the third flow channel opening, and being driven to move between a first position and a second position; When the moving member is located at the first position, the moving member abuts against the first surface and separates from the second surface to open the third flow channel opening, so that the moving member in the first rotation range partially closes the first flow channel opening and opens the third flow channel opening, and the moving member in the second rotation range opens both the first flow channel opening and the third flow channel opening; When the moving part is located in the second position, the moving part abuts against the second surface and separates from the first surface to open the first flow channel opening, so that the moving part located in the eighth rotation interval among the multiple rotation intervals partially closes the third flow channel opening and opens the first flow channel opening, and the moving part located in the ninth rotation interval among the multiple rotation intervals opens the first flow channel opening and the second flow channel opening at the same time.

17. The valve device according to claim 16, characterized in that The moving part includes a first end face and a second end face opposite to each other along the extension direction of the axis, the moving part abuts against the first surface through the first end face and abuts against the second surface through the second end face, the first end face, the second end face, the first surface and the second surface are all planes and any two of them are parallel to each other.

18. The valve device according to claim 16, characterized in that The first rotation interval and the eighth rotation interval are the same rotation interval, and the second rotation interval and the ninth rotation interval are the same rotation interval.

19. The valve device according to claim 16, characterized in that The moving member includes a first movable valve plate and a second movable valve plate stacked along an extending direction of the axis, the first movable valve plate being closer to the first surface than the second movable valve plate, and the first movable valve plate and the second movable valve plate being synchronously rotated. The valve device further includes an elastic member located between the first movable valve plate and the second movable valve plate, the elastic member urging the first movable valve plate toward the first surface so that the two are in contact, and urging the second movable valve plate toward the second surface so that the two are in contact; Driven by the fluid medium flowing from the first flow channel opening to the third flow channel opening, the first movable valve plate overcomes the pressure of the elastic member and moves along the axis away from the first surface until it is separated from the first surface, so that the moving member moves from the first position to the second position; Driven by the fluid medium flowing from the third flow channel opening to the first flow channel opening, the second movable valve plate overcomes the pressure of the elastic member and moves along the axis away from the second surface until it is separated from the second surface, so that the moving member moves from the second position to the first position.

20. The valve device according to any one of claims 16 to 19, characterized in that The valve device also includes a first fixed valve plate and a second fixed valve plate, the first fixed valve plate, the moving part and the second fixed valve plate are stacked along the extension direction of the axis, the moving part is located between the first fixed valve plate and the second fixed valve plate, the first surface is the surface of the first fixed valve plate facing the moving part, and the second surface is the surface of the second fixed valve plate facing the moving part.

Images