Valve device

Abstract

The utility model provides a valve device which comprises a valve body, the valve body is provided with a first connector and a second connector, a first fluid path is arranged between the first connector and the second connector, a first surface is arranged in the valve body, a first flow channel opening is formed in the first surface, and the first fluid path extends to pass through the first flow channel opening. The valve device further comprises 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 rotating intervals, and the multiple rotating intervals comprise the first rotating interval and the second rotating interval. When the moving part abutting against the first surface is located in the first rotating interval, the moving part partially blocks the first flow channel opening, so that a first throttling valve opening with the flow area changing along with rotation of the moving part is formed. When the moving part abutting against the first surface is located in the second rotating interval, the moving part opens the first flow channel opening to form a first straight-through valve port. According to the structure, the valve device can selectively achieve the functions of an expansion valve and a straight-through valve.

Description

TECHNICAL FIELD

[0001] The utility model relates to valve technology field, especially, relate to a valve device. BACKGROUND

[0002] A vehicle thermal management system is an important component of a vehicle, particularly a new energy vehicle. The vehicle thermal management system is used to control the temperature of various parts of the vehicle to ensure that the various parts of the vehicle work at an appropriate temperature. In order to meet the complex fluid control requirements, the vehicle thermal management system usually includes a plurality of valves, which are used to achieve different functions. For example, the valves can include expansion valves, straight-through valves, and shut-off valves, etc. The presence of these valves increases the complexity of the vehicle thermal management system, increases its space occupation, raises its failure rate, and brings more inconvenience to its maintenance. SUMMARY

[0003] Therefore, the utility model embodiment provides a valve device, which aims to reduce the number and types of valves in the vehicle thermal management system, thereby reducing the complexity of the vehicle thermal management system, reducing its space occupation, reducing its failure rate, and improving its maintenance convenience.

[0004] The valve device provided by the utility model embodiment comprises a valve body, the valve body is provided with a first interface and a second interface, a first fluid path is arranged between the first interface and the second interface, a first surface is arranged in the valve body, a first flow passage is formed in the first surface, the first fluid path extends through the first flow passage, the valve device further comprises a moving part arranged in the valve body, the moving part is driven to rotate relative to the valve body around an axis in a plurality of rotation intervals, the plurality of rotation intervals comprise a first rotation interval and a second rotation interval; when the moving part abutting against the first surface is located in the first rotation interval, the moving part partially blocks the first flow passage to form a first throttling valve port with a flow passage area changing with the rotation of the moving part; when the moving part abutting against the first surface is located in the second rotation interval, the moving part opens the first flow passage to form a first straight-through valve port.

[0005] In some embodiments, when the moving part abutting against the first surface is located in a third rotation interval in the plurality of rotation intervals, the moving part blocks the first flow passage entirely to shut off the first fluid path.

[0006] In some embodiments, the end surface of the moving element facing the first surface is provided with a first flow passage, a second flow passage and a blocking portion arranged along a direction around the axis. The blocking portion prevents fluid from passing through the moving element. A plane defining the vertical axis is defined as a projection plane. When the moving element abutting against the first surface is located in the first rotation interval, the orthographic projection of the first flow passage and the first flow passage on the projection plane at least partially overlap, so that the first flow passage and the first flow passage cooperatively form a first throttling valve port. When the moving element abutting against the first surface is located in the second rotation interval, the orthographic projection of the second flow passage and the first flow passage on the projection plane at least partially overlap, so that the second flow passage and the first flow passage cooperatively form a first straight-through valve port. When the moving element abutting against the first surface is located in the third rotation interval, the orthographic projection of the blocking portion covers the orthographic projection of the first flow passage on the projection plane, so that the first flow passage is completely blocked by the blocking portion.

[0007] In some embodiments, the first flow passage is in the shape of an elongated slit extending along a direction around the axis.

[0008] In some embodiments, the moving element comprises a valve plate. The end surface of the valve plate facing away from the first surface is provided with a flow passage groove. The width of the flow passage groove gradually decreases towards the first surface. The first flow passage is formed at the bottom of the flow passage groove and penetrates the valve plate.

[0009] In some embodiments, the first flow passage is in the shape of an elongated slit extending along a direction around the axis.

[0010] In some embodiments, the second flow passage is a fan-shaped or fan-ring-shaped through hole penetrating the moving element, or a fan-shaped or fan-ring-shaped notch.

[0011] In some embodiments, the valve body is further provided with a third interface. The first surface is further formed with a second flow passage. A second fluid path is provided between the first interface and the third interface. The second fluid path passes through the second flow passage. When the moving element abutting against the first surface is located in the first rotation interval, the moving element partially blocks the first flow passage to form a first throttling valve port, and completely blocks the second flow passage to cut off the second fluid path. When the moving element abutting against the first surface is located in the third rotation interval, the moving element completely blocks the first flow passage to cut off the first fluid path, and partially blocks the second flow passage to form a second throttling valve port whose flow passage area changes with the rotation of the moving element.

[0012] In some embodiments, when the moving element abutting against the first surface is located in a fourth rotation interval of the plurality of rotation intervals, the moving element partially blocks the first flow passage to form a first throttling valve port, and partially blocks the second flow passage to form a second throttling valve port.

[0013] In some embodiments, when the moving element in abutment with the first surface is located in the fifth rotation interval of the plurality of rotation intervals, the moving element blocks all of the first flow port to cut off the first fluid path, and blocks all of the second flow port to cut off the second fluid path.

[0014] In some embodiments, the first flow port and the second flow port are arranged apart along a direction around the axis. An end surface of the moving element facing the first surface is provided with a first blocking portion, a first flow-through port, a second blocking portion, a third flow-through port, and a third blocking portion arranged along the direction around the axis. The first flow-through port is located between the first blocking portion and the second blocking portion. The third flow-through port is located between the second blocking portion and the third blocking portion. A plane defining the perpendicular axis is a projection plane. When the moving element in abutment with the first surface is located in the first rotation interval, a normal projection of the first flow-through port and the first flow port on the projection plane at least partially overlaps, and a normal projection of the first blocking portion on the projection plane covers a normal projection of the second flow port on the projection plane, so that the first flow-through port and the first flow port cooperatively form a first throttling port, and all of the second flow port is blocked by the first blocking portion. When the moving element in abutment with the first surface is located in the third rotation interval, a normal projection of the third blocking portion on the projection plane covers a normal projection of the first flow port on the projection plane, and a normal projection of the third flow-through port and the second flow port on the projection plane at least partially overlaps, so that all of the first flow port is blocked by the third blocking portion, and the third flow-through port and the second flow port cooperatively form a second throttling port. When the moving element in abutment with the first surface is located in the fourth rotation interval, a normal projection of the first flow-through port and the second flow port on the projection plane at least partially overlaps, and a normal projection of the third flow-through port and the first flow port on the projection plane at least partially overlaps, so that the third flow-through port and the first flow port cooperatively form the first throttling port, and the first flow-through port and the second flow port cooperatively form the second throttling port. When the moving element in abutment with the first surface is located in the fifth rotation interval, a normal projection of the third blocking portion on the projection plane covers a normal projection of the first flow port on the projection plane, and a normal projection of the second blocking portion on the projection plane covers a normal projection of the second flow port on the projection plane, so that all of the first flow port is blocked by the third blocking portion, and all of the second flow port is blocked by the second blocking portion.

[0015] In some embodiments, the moving element comprises a valve plate, and an end surface of the valve plate facing away from the first surface is provided with a flow-through groove. The width of the flow-through groove gradually decreases towards the first surface. The first flow-through port, the second blocking portion, and the third flow-through port are formed in the bottom of the flow-through groove, and the first flow-through port and the third flow-through port are in the form of an elongated slit through the valve plate.

[0016] In some embodiments, when the moving element is in the second rotational interval abutting the first surface, the moving element opens the first flow port to form a first straight-through valve port and blocks the entirety of the second flow port to cut off the second fluid path. When the moving element is in the sixth rotational interval abutting the first surface, the moving element opens the second flow port to form a second straight-through valve port and blocks the entirety of the first flow port to cut off the first fluid path.

[0017] In some embodiments, when the moving element is in the seventh rotational interval abutting the first surface, the moving element partially opens the first flow port and the second flow port to form a first split valve port and a second split valve port, and rotation of the moving element causes the flow area of the first split valve port and the second split valve port to change in negative correlation.

[0018] In some embodiments, the first flow port and the second flow port are arranged along a direction around the axis. An end surface of the moving element facing the first surface is provided with a second flow-through port, a first blocking portion and a third blocking portion arranged along a direction around the axis. The second flow-through port is located between the first blocking portion and the third blocking portion. A plane defining a perpendicular axis is a projection plane. When the moving element is in the second rotational interval abutting the first surface, a projection of the second flow-through port and the first flow port on the projection plane at least partially overlaps, and a projection of the third blocking portion on the projection plane covers a projection of the second flow port on the projection plane, so that the second flow-through port and the first flow port cooperatively form a first straight-through valve port, and the entirety of the second flow port is blocked by the third blocking portion. When the moving element is in the sixth rotational interval abutting the first surface, a projection of the second flow-through port and the second flow port on the projection plane at least partially overlaps, and a projection of the first blocking portion on the projection plane covers a projection of the first flow port on the projection plane, so that the second flow-through port and the second flow port cooperatively form a second straight-through valve port, and the entirety of the first flow port is blocked by the first blocking portion. When the moving element is in the seventh rotational interval abutting the first surface, a projection of the second flow-through port on the projection plane partially overlaps with projections of the first flow port and the second flow port on the projection plane, so that the second flow-through port cooperatively forms a first split valve port with the first flow port, and the second flow-through port cooperatively forms a second split valve port with the second flow port.

[0019] In some embodiments, the valve device further comprises a fixed valve plate located in the valve body. The fixed valve plate is stacked along the extension direction of the axis with the moving element. The first surface is a surface of the fixed valve plate facing the moving element.

[0020] In some embodiments, the valve body further has a second surface formed with a third flow passage opening, and the first fluid path further extends through the third flow passage opening. The first flow passage opening and the third flow passage opening are arranged apart along the extension direction of the axis. The moving element is located between the first flow passage opening and the third flow passage opening and is driven to move between a first position and a second position. When the moving element is in the first position, the moving element abuts against the first surface and is separated from the second surface to open the third flow passage opening, so that the moving element in the first rotation interval partially closes the first flow passage opening and opens the third flow passage opening, and the moving element in the second rotation interval simultaneously opens the first flow passage opening and the third flow passage opening. When the moving element is in the second position, the moving element abuts against the second surface and is separated from the first surface to open the first flow passage opening, so that the moving element in the eighth rotation interval of the plurality of rotation intervals partially closes the third flow passage opening and opens the first flow passage opening, and the moving element in the ninth rotation interval of the plurality of rotation intervals simultaneously opens the first flow passage opening and the third flow passage opening.

[0021] In some embodiments, the moving element includes a first end surface and a second end surface opposite along the extension direction of the axis. The moving element abuts against the first surface through the first end surface and abuts against the second surface through the second end surface. The first end surface, the second end surface, the first surface, and the second surface are all planar and any two of them are parallel to each other.

[0022] 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.

[0023] In some embodiments, the moving element includes a first moving valve plate and a second moving valve plate stacked along the extension direction of the axis. The first moving valve plate is closer to the first surface than the second moving valve plate. The first moving valve plate and the second moving valve plate are synchronously rotatable combined. The valve device further includes a resilient element located between the first moving valve plate and the second moving valve plate, pressing the first moving valve plate towards the first surface to abut, and pressing the second moving valve plate towards the second surface to abut. Under the driving of the fluid medium from the first flow passage opening to the third flow passage opening, the first moving valve plate overcomes the pressing of the resilient element, moves along the axis away from the first surface to separate from the first surface, so that the moving element moves from the first position to the second position. Under the driving of the fluid medium from the third flow passage opening to the first flow passage opening, the second moving valve plate overcomes the pressing of the resilient element, moves along the axis away from the second surface to separate from the second surface, so that the moving element moves from the second position to the first position.

[0024] 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 element, and the second fixed valve plate are stacked along the extension direction of the axis. The moving element is located between the first fixed valve plate and the second fixed valve plate. The first surface is a surface of the first fixed valve plate facing the moving element, and the second surface is a surface of the second fixed valve plate facing the moving element.

[0025] According to the valve device provided by the utility model, the moving part can cooperate with the first flow channel opening to form a first throttling valve opening with a changeable flow passage area, and can form a first straight-through valve opening by cooperation with the first flow channel opening through rotation. Accordingly, the valve device can selectively realize the functions of an expansion valve and a straight-through valve. Therefore, using the valve device helps to reduce the number and types of valves in the vehicle thermal management system, thereby reducing the complexity of the vehicle thermal management system, reducing the space occupation thereof, reducing the failure rate thereof, and improving the maintenance convenience thereof. BRIEF DESCRIPTION OF DRAWINGS

[0026] It should be understood that the following drawings only show certain embodiments of the utility model and should not be considered as limiting the scope.

[0027] It should be understood that the same or similar reference signs are used in the drawings to represent the same or similar elements.

[0028] It should be understood that the drawings are only schematic and the sizes and proportions of the elements in the drawings are not necessarily precise.

[0029] Figure 1 is a schematic sectional view of a valve device according to an embodiment of the utility model.

[0030] Figure 2 is a structural schematic view of a valve device in Figure 1 .

[0031] Figure 3 is a structural schematic view of a moving part of a valve device in Figure 1 .

[0032] Figure 4 is a schematic partial sectional view taken along the A-A line in Figure 3 .

[0033] Figure 5 is a structural schematic view of a moving part of a valve device in Figure 1 , which abuts against the first surface, wherein the moving part is located in the first rotation interval.

[0034] Figure 6 is a structural schematic view of a moving part of a valve device in Figure 1 , which abuts against the first surface, wherein the moving part is located in the second rotation interval.

[0035] Figure 7 is a structural schematic view of a moving part of a valve device in Figure 1 , which abuts against the first surface, wherein the moving part is located in the third rotation interval.

[0036] Figure 8 is a structural schematic view of a moving part according to another embodiment of the utility model.

[0037] Figure 9 is a structural schematic view of a valve device according to another embodiment of the present application.

[0038] Figure 10 is Figure 9 is a structural schematic view of a valve device according to another embodiment of the present application.

[0039] Figure 11 is Figure 9 is a structural schematic view of a valve device according to another embodiment of the present application.

[0040] Figure 12 is Figure 9 is a structural schematic view of a valve device according to another embodiment of the present application.

[0041] Figure 13 is Figure 9 is a structural schematic view of a valve device according to another embodiment of the present application.

[0042] Figure 14 is Figure 9 is a structural schematic view of a valve device according to another embodiment of the present application.

[0043] Figure 15 is Figure 9 is a structural schematic view of a valve device according to another embodiment of the present application.

[0044] Figure 16 is Figure 9 is a structural schematic view of a valve device according to another embodiment of the present application.

[0045] Figure 17 is Figure 9 is a structural schematic view of a valve device according to another embodiment of the present application.

[0046] Figure 18 is Figure 9 is a structural schematic view of a valve device according to another embodiment of the present application.

[0047] Figure 19 is a structural schematic view of a valve device according to another embodiment of the present application.

[0048] Figure 20 is Figure 19 is an exploded schematic view of a valve device according to another embodiment of the present application.

[0049] Figure 21is a schematic cross-sectional view of a valve device in Figure 19 is a schematic cross-sectional view of a valve device in

[0050] Figure 22 is a schematic cross-sectional view of a valve device in Figure 19 is a schematic cross-sectional view of a valve device in

[0051] Figure 23 is a schematic cross-sectional view of a valve device in Figure 22 is a schematic cross-sectional view of a valve device in

[0052] Figure 24 is a schematic cross-sectional view of a valve device in Figure 22 is a schematic cross-sectional view of a valve device in DETAILED DESCRIPTION

[0053] Numerous specific details are set forth in the following description in order to provide an understanding of the structure, function, and use of the embodiments as described and shown in the specification. It will be understood that the embodiments described and shown herein are non-limiting examples, and that the particular structural and functional details disclosed herein can be representative and exemplary. Embodiments can be modified and altered without departing from the scope of the claims.

[0054] An embodiment of the utility model provides a valve device 100. Only by way of example, the valve device 100 can be applied in the thermal management system of vehicle, especially new energy vehicle. Prospectably, the valve device 100 can also be applied in other application scenarios, and the utility model does not make special limitation to this.

[0055] Referring to Figure 1 , the valve device 100 includes a valve body 10, and the valve body 10 is provided with a first interface 11 and a second interface 12. The valve body 10 is internally provided with a first fluid path extending between the first interface 11 and the second interface 12. The valve device 100 can be connected with external pipelines through the first interface 11 and the second interface 12, so that the fluid medium in the external pipelines flows through the valve device 100, that is, flows through the first fluid path.

[0056] Continuing to refer to Figure 1 , the valve body 10 is internally provided with a first surface 21, and the first surface 21 is formed with a first flow passage opening 22, and the first fluid path extends through the first flow passage opening 22. Continuing to refer to Figure 1 , the valve device 100 further includes a moving element 30. The moving element 30 is supported in the valve body 10 and can be driven to rotate in multiple rotation intervals about an axis R.

[0057] Only by way of example, referring to Figure 1 and Figure 2The valve device 100 further comprises a fixed valve plate 20 stacked with the moving member 30 along the extending direction of the axis R. The fixed valve plate 20 is fixedly supported in the valve body 10 relative to the valve body 10, such that the moving member 30 rotates around the axis R, the fixed valve plate 20 is fixed relative to the valve body 10. The first surface 21 is the surface of the side of the fixed valve plate 20 facing the moving member 30. Prospectively, in other examples, the first surface can also be a part of the inner wall surface of the valve body 10.

[0058] By way of example only, reference is made to Figure 1 The valve device 100 further comprises a driving unit 40 for driving the moving member 30 to rotate around the axis R. By way of example only, the driving unit 40 can be an electric motor 40, the output shaft of which can be connected to the moving member 30 to transmit torque to the moving member 30. Prospectively, in other examples, the driving device 30 can also be other devices or mechanisms capable of outputting torque, such as pneumatic or hydraulic driving mechanisms.

[0059] The moving member 30 can be in abutment with the first surface 21. In the current example, the moving member 30 can always be in abutment with the first surface 21. In other examples, the moving member 30 can either remain in abutment with the first surface 21 or move along the extending direction of the axis R to separate from the first surface 21, i.e. allow reverse flow.

[0060] The plurality of rotation intervals comprises a first rotation interval and a second rotation interval. Reference is made to Figure 5 When the moving member 30 in abutment with the first surface 21 is located in the first rotation interval, the moving member 30 partially blocks the first flow passage opening 22 to form a first throttling valve opening 51. Here, the first throttling valve opening 51 flow area (or opening degree) changes with the rotation of the moving member 30 when the moving member 30 rotates in the first rotation interval. Reference is made to Figure 6 When the moving member 30 in abutment with the first surface 21 is located in the second rotation interval, the moving member 30 opens the first flow passage opening 22 to form a first straight-through valve opening 52.

[0061] According to the valve device 100 provided by the present application, the moving member 30 can cooperate with the first flow passage opening 22 to form a first throttling valve opening 51 with a changeable flow area, and can cooperate with the first flow passage opening 22 to form a first straight-through valve opening 52 by rotating. Accordingly, the valve device 100 can selectively realize the functions of an expansion valve and a straight-through valve. Therefore, using the valve device 100 helps to reduce the number and types of valves in the vehicle thermal management system, thereby reducing the complexity of the vehicle thermal management system, reducing its space occupation, reducing its failure rate, and improving its maintenance convenience.

[0062] The plurality of rotation intervals can further comprise a third rotation interval. Reference is made to Figure 7When the moving element 30 in contact with the first surface 21 is located in the third rotation interval, the moving element 30 can block the entire first flow passage opening 22 to cut off the first fluid path. By rotating, the moving element 30 can cooperate with the first flow passage opening 22 to block the first flow passage opening 22, thereby cutting off the first fluid path. Accordingly, in addition to being able to realize the functions of the expansion valve and the straight-through valve, the valve device 100 can also realize the function of the cut-off valve. Therefore, using 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 the space occupation thereof, reducing the failure rate thereof, and improving the maintenance convenience thereof.

[0063] The utility model embodiment does not make special limitation to the structure of the moving element 30, as long as it can realize the functions of selectively partially blocking, completely blocking and opening the first flow passage opening 22 by rotating relative to the valve body 10. Next, the structure of the moving element 30 is exemplarily described.

[0064] With reference to FIGS. 1 and Figure 3 The moving element 30 can have an end surface 31 and an end surface 32, the end surface 31 being located at one end of the moving element 30 facing the first surface 21, and the end surface 32 being located at the other end of the moving element 30 away from the first surface 21. The end surface 31 of the moving element 30 can be provided with a first flow passage opening 33, a second flow passage opening 34 and a cut-off portion 35. The first flow passage opening 33, the second flow passage opening 34 and the cut-off portion 35 can be arranged along the direction around the axis R. The first flow passage opening 33 and the second flow passage opening 34 can be configured to allow the fluid medium to pass through the moving element 30, and the cut-off portion 35 is configured to prevent the fluid from passing through the moving element 30.

[0065] By way of example only, the moving element 30 can be provided with two flow passages extending through along the extension direction of the axis R, and the two flow passages can extend to the end surface 31 to form the first flow passage opening 33 and the second flow passage opening 34, respectively. By way of example only, the cut-off portion 35 can be a part of the surface of the end surface 31, which is a solid surface. By way of example only, the end surface 31 can be provided with two cut-off portions 35. Along the direction around the axis R, the first flow passage opening 33, one cut-off portion 35, the second flow passage opening 34 and the other cut-off portion 35 can be arranged in sequence.

[0066] As Figure 5As shown, when the moving element 30 in contact with the first surface 21 is located in the first rotation interval, the orthographic projection of the first flow-through port 33 and the first flow passage port 22 on the projection plane perpendicular to the axis R can at least partially overlap, so that the first flow-through port 33 and the first flow passage port 22 cooperatively form a first throttling valve port 51. The overlapping area of the orthographic projection of the first flow-through port 33 and the first flow passage port 22 is the flow-through area of the first valve port 51. As the moving element 30 rotates in the first rotation interval, the overlapping area of the orthographic projection of the first flow-through port 33 and the first flow passage port 22 changes accordingly, that is, the flow-through area of the first valve port 51 changes accordingly. For example, as the moving element 30 rotates clockwise from the position in Figure 5 , the flow-through area of the first valve port 51 gradually increases. For another example, as the moving element 30 rotates counterclockwise from the position in Figure 5 , the flow-through area of the first valve port 51 gradually decreases.

[0067] As shown in Figure 6 , when the moving element 30 in contact with the first surface 21 is located in the second rotation interval, the orthographic projection of the second flow-through port 34 and the first flow passage port 22 on the projection plane can at least partially overlap, so that the first flow passage port 22 is open, and the second flow-through port 34 and the first flow passage port 22 cooperatively form a first straight-through valve port 52.

[0068] As shown in Figure 7 , when the moving element 30 in contact with the first surface 21 is located in the third rotation interval, the orthographic projection of the blocking portion 35 on the projection plane can cover the orthographic projection of the first flow passage port 22 on the projection plane, so that the first flow passage port 22 is completely blocked by the blocking portion 34, and the first flow-through path is blocked.

[0069] According to the structure of the moving element 30, by rotating the moving element 30, the first flow passage port 22 will selectively cooperate with one of the first flow-through port 33, the second flow-through port 34 and the blocking portion 35, so that the valve device 100 can selectively realize the expansion function, the straight-through function and the blocking function. In addition, according to the structure of the moving element 30, while realizing the above-mentioned functions, the valve device 100 has a relatively simple and compact structure.

[0070] The utility model embodiment does not make special limitation to the structure of the first flow-through port 33, as long as it can cooperate with the first flow passage port 22 to form the first throttling valve port 51. As an example, reference is made to Figure 3, the first flow passage 33 is in the shape of an elongated slit extending along the direction around the axis R. The first flow passage 33 in the shape of an elongated slit has a small flow area, ensuring that the first throttle valve port 51 formed in cooperation with the first flow passage port 22 has a small flow area. In addition, by virtue of the shape of an elongated slit extending along the direction around the axis R, the rate of change of the overlapping area of the projections of the first flow passage 33 and the first flow passage port 22 is small when the moving element 30 rotates in the first rotation interval. Accordingly, fine adjustment of the flow area of the first valve port 51 can be achieved, thereby achieving precise control of the fluid flow.

[0071] The moving element 30 can include a valve plate 30. In the current example, the moving element 30 is the valve plate 30. In other examples, the moving element 30 can include a plurality of valve plates 30, or can include other components in addition to the valve plate 30. Referring to Figure 3 and Figure 4 The end surface 32 of the valve plate 30 away from the first surface 21 can be provided with a flow passage groove 36. The width W of the flow passage groove 36 can gradually decrease towards the first surface 21. That is, along the direction from the end surface 32 of the valve plate 30 to the end surface 31 of the valve plate 30, the size of the flow passage groove 36 in the radial direction can gradually decrease. The first flow passage 33 can be formed at the bottom of the flow passage groove 36 and pass through the valve plate 30.

[0072] By virtue of the flow passage groove 36 in this configuration, the fluid medium entering the flow passage groove 36 can generate pressure on the valve plate 30, assisting in pressing the valve plate 30 against the first surface 21, which helps the end surface 31 to closely adhere to the first surface 21, avoiding the occurrence of undesirable leakage. In addition, the width W of the flow passage groove 36 gradually decreases in the direction close to the first surface 21, i.e. forms a cross section similar to a V shape, which helps to guide the flow of fluid medium to the first flow passage 33.

[0073] The present embodiment does not particularly limit the configuration of the first flow passage port 22, as long as it can cooperate with the first flow passage 33 to form the first throttle valve port 51 and cooperate with the second flow passage 34 to form the first straight-through valve port 52. As an example, referring to Figure 2 The first flow passage port 22 can be a fan-shaped or fan-ring-shaped through hole. The first flow passage port realized as a fan-shaped or fan-ring-shaped through hole has a relatively simple structure, and has a larger opening relative to the structure of the columnar valve device 100, which can provide a smoother fluid path and reduce the pressure drop loss of the fluid medium.

[0074] The present embodiment does not particularly limit the configuration of the second flow passage 34, as long as it can cooperate with the first flow passage port 22 to form the first straight-through valve port 52. In one example, referring to Figure 3, the second flow-through port 34 can be a fan-shaped or fan-ring-shaped through hole of the moving member 30. In another example, referring to Figure 8 , the second flow-through port 34 can be a fan-shaped or fan-ring-shaped notch of the moving member 30. The second flow-through port 34 realized as a fan-shaped or fan-ring-shaped through hole or notch has a relatively simple structure, and relative to the structure of the columnar valve device 100, its opening is larger, which can provide a smoother fluid path and reduce the pressure drop loss of the fluid medium.

[0075] Another embodiment of the utility model provides a valve device 100a. The valve device 100a is basically same with the valve device 100, and the difference between the two will be mainly introduced below. For the purpose of simplicity, the same elements of the valve device 100a and the valve device 100 will adopt the same reference numerals, and the repeated description will be appropriately omitted.

[0076] Referring to Figure 9 and Figure 10 , the valve body 10 of the valve device 100a can further include a third interface 13, and the first surface 21 can further be formed with a second flow channel port 23. A second fluid path can be provided between the first interface 11 and the third interface 13, and the second fluid path can extend through the second flow channel port 23. By way of example only, the first interface 11 can be an inlet, and the second interface 12 and the third interface 13 can both be outlets, and the fluid medium can flow from the first interface to the second interface 12 through the first flow channel port 22 and be discharged from the second interface 12, or flow from the first interface to the third interface 13 through the second flow channel port 23 and be discharged from the third interface 13.

[0077] Referring to Figure 12 , when the moving member 30 abutting against the first surface 21 is located in the first rotation interval, the moving member 30 can partially close the first flow channel port 22 to form a first throttle valve port 51, and can completely close the second flow channel port 23 to cut off the second fluid path. Referring to Figure 14 , when the moving member 30 abutting against the first surface 21 is located in the third rotation interval, the moving member 30 completely closes the first flow channel port 22 to cut off the first fluid path, and partially closes the second flow channel port 23 to form a second throttle valve port 53. When the moving member 30 rotates in the third interval, the flow-through area of the second throttle valve port 53 changes.

[0078] According to this configuration, the valve device 100a will provide two fluid paths, and can selectively cut off one fluid path and form a throttle valve port on the other fluid path. Accordingly, the valve device 100a will be able to realize flow splitting, and be able to realize the expansion function and the cut-off function on each fluid path, which 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 occupation, reducing its failure rate, and improving its maintenance convenience.

[0079] Further, referring to Figure 15 When the moving element 30 in abutment with the first surface 21 is located in the fourth rotational interval of the plurality of rotational intervals, the moving element 30 can partially block the first flow passage opening 22 to form a first throttling valve opening 51 and can partially block the second flow passage opening 23 to form a second throttling valve opening 53. According to this configuration, the valve device 100a will be able to simultaneously achieve the expansion function for both fluid paths. Accordingly, the valve device 100a can provide more abundant functions to meet more complex and diverse fluid control requirements of the vehicle thermal management system.

[0080] Further, referring to Figure 16 When the moving element 30 in abutment with the first surface 21 is located in the fifth rotational interval of the plurality of rotational intervals, the moving element 30 can block the entirety of the first flow passage opening 22 to cut off the first fluid path and can block the entirety of the second flow passage opening 23 to cut off the second fluid path. According to this configuration, the valve device 100a will be able to achieve the function of simultaneously cutting off both fluid paths, thereby meeting more complex and diverse fluid control requirements of the vehicle thermal management system.

[0081] Back to Figure 13 When the moving element 30 in abutment with the first surface 21 is located in the second rotational interval, the moving element 30 can open the first flow passage opening 22 to form a first straight-through valve opening 52 and can block the entirety of the second flow passage opening 23 to cut off the second fluid path. Referring to Figure 17 When the moving element 30 in abutment with the first surface 21 is located in the sixth rotational interval of the plurality of rotational intervals, the moving element 30 can open the second flow passage opening 23 to form a second straight-through valve opening 54 and can block the entirety of the first flow passage opening 22 to cut off the first fluid path. According to this configuration, the valve device 100a will be able to selectively directly conduct one fluid path and cut off the other fluid path, thereby meeting more complex and diverse fluid control requirements of the vehicle thermal management system.

[0082] Referring to Figure 18 When the moving element 30 in abutment with the first surface 21 is located in the seventh rotational interval of the plurality of rotational intervals, the moving element 30 can partially open the first flow passage opening 22 and the second flow passage opening 23 to form a first split valve opening 55 and a second split valve opening 56. When the moving element 30 rotates within the seventh rotational interval, the flow passage areas of the first split valve opening 55 and the second split valve opening 56 can change in a negative correlation, that is, the flow passage area of one of the first split valve opening 55 and the second split valve opening 56 increases while the flow passage area of the other decreases. By way of example only, as the moving element 30 rotates within the seventh rotational interval, the flow passage area of the first split valve opening 55 increases while the flow passage area of the second split valve opening 56 decreases. Figure 17As shown, in the seventh rotation interval, when the moving element 30 rotates in the counterclockwise direction in the drawing, the flow area of the first shunt valve port 55 increases, and the flow area of the second shunt valve port 56 decreases; when the moving element 30 rotates in the clockwise direction in the drawing, the flow area of the second shunt valve port 56 increases, and the flow area of the first shunt valve port 55 decreases. According to this configuration, the valve device 100a will be able to realize the proportional shunt function, adjusting the proportion of fluid medium in the two fluid paths, so as to meet the more complex and diverse fluid control requirements of the vehicle thermal management system.

[0083] Returning to Figure 10 , the first flow passage port 22 and the second flow passage port 23 can be arranged apart along the direction around the axis R. Referring to Figure 11 , the end surface 31 of the moving element 30 can be provided with a first truncation portion 35a, a second truncation portion 35b, a third truncation portion 35c, a first flow passage port 33, a second flow passage port 34, and a third flow passage port 37 arranged along the direction around the axis R. Along the direction around the axis R, the first flow passage port 33 can be located between the first truncation portion 35a and the second truncation portion 35b, the third flow passage port 37 can be located between the second truncation portion 35b and the third truncation portion 35c, and the second flow passage port 34 can be located between the third truncation portion 35c and the first truncation portion 35a. That is, along the direction around the axis R, i.e. the clockwise direction in the drawing, the first truncation portion 35a, the first flow passage port 33, the second truncation portion 35b, the third flow passage port 37, the third truncation portion 35c, and the second flow passage port 34 can be arranged in sequence.

[0084] By way of example only, the moving element 30 can be provided with three flow passages extending through the extension direction of the axis R, which can extend to the end surface 31 to form the first flow passage port 33, the second flow passage port 34, and the third flow passage port 37, respectively. By way of example only, the first truncation portion 35a, the second truncation portion 35b, and the third truncation portion 35c can each be a part of the surface of the end surface 31, i.e. a solid surface.

[0085] Referring to Figure 12 , when the moving element 30 abutting against the first surface 21 is located in the first rotation interval, the orthographic projection of the first flow passage port 33 and the first flow passage port 22 on the projection plane perpendicular to the axis can at least partially overlap, so that the first flow passage port 33 and the first flow passage port 22 cooperatively form the first throttle valve port 51. At the same time, the orthographic projection of the first truncation portion 35a on the projection plane can cover the orthographic projection of the second flow passage port 23 on the projection plane, so that the entire second flow passage port 23 is blocked by the first truncation portion 35a to truncate the second fluid path.

[0086] Continuing to refer to Figure 12As the moving element 30 rotates within the first rotation interval, the area of the overlapping projections changes, resulting in a change in the flow area of the first valve port 51. Also, as the moving element 30 rotates within the first rotation interval, the orthographic projection of the first cutoff portion 35a on the projection plane is always covering the orthographic projection of the second flow passage port 23 on the projection plane, so that the first fluid path is always cut off.

[0087] With reference to Figure 14 When the moving element 30 abutting against the first surface 21 is located in the third rotation interval, the orthographic projection of the third cutoff portion 35c on the projection plane can cover the orthographic projection of the first flow passage port 22 on the projection plane, so that the first flow passage port 22 is entirely blocked by the third cutoff portion 35c to cut off the first fluid path. Meanwhile, the orthographic projections of the third flow passage port 37 and the second flow passage port 23 on the projection plane can at least partially overlap, so that the third flow passage port 37 cooperates with the second flow passage port 23 to form the second throttle valve port 53.

[0088] With reference to Figure 14 As the moving element 30 rotates within the third rotation interval, the orthographic projection of the third cutoff portion 35c on the projection plane is always covering the orthographic projection of the first flow passage port 22 on the projection plane, so that the first fluid path is always cut off. Also, as the moving element 30 rotates within the second rotation interval, the area of the overlapping projections changes, resulting in a change in the flow area of the second throttle valve port 53.

[0089] With reference to Figure 15 When the moving element 30 abutting against the first surface 21 is located in the fourth rotation interval, the orthographic projections of the first flow passage port 33 and the second flow passage port 23 on the projection plane can at least partially overlap, so that the first flow passage port 33 cooperates with the second flow passage port 23 to form the first throttle valve port 51. Meanwhile, the orthographic projections of the third flow passage port 37 and the first flow passage port 22 on the projection plane can at least partially overlap, so that the third flow passage port 37 cooperates with the first flow passage port 22 to form the second throttle valve port 53.

[0090] With reference to Figure 16 When the moving element 30 abutting against the first surface 21 is located in the fifth rotation interval, the orthographic projection of the third cutoff portion 35c on the projection plane can cover the orthographic projection of the first flow passage port 22 on the projection plane, so that the first flow passage port 22 is entirely blocked by the third cutoff portion 35c to cut off the first fluid path. Meanwhile, the orthographic projection of the second cutoff portion 35b on the projection plane can cover the orthographic projection of the second flow passage port 23 on the projection plane, so that the second flow passage port 23 is entirely blocked by the second cutoff portion 35b to cut off the second fluid path.

[0091] In this way, by rotating the moving element 30 between the first rotation interval, the third rotation interval, the fourth rotation interval and the fifth rotation interval, the first flow passage port 22 and the second flow passage port 23 can respectively cooperate with the first flow passage port 33 and the first blocking portion 35a to achieve the expansion and blocking functions for the first fluid path and the second fluid path respectively, can respectively cooperate with the third blocking portion 35c and the third flow passage port 37 to achieve the blocking and expansion functions for the first fluid path and the second fluid path respectively, can respectively cooperate with the third flow passage port 37 and the first flow passage port 33 to achieve the expansion functions for the first fluid path and the second fluid path simultaneously, and can respectively cooperate with the second blocking portion 35b and the third blocking port 35c to achieve the blocking functions for the first fluid path and the second fluid path simultaneously. Accordingly, the valve device 100a will be able to meet the more complex fluid control requirements of the vehicle thermal management system.

[0092] With reference to Figure 9 and Figure 11 , the moving element 30 can comprise a valve plate 30. In the current example, the moving element 30 is the valve plate 30. The end face 32 of the moving element 30, i.e. the valve plate 30, can be provided with a flow passage groove 36. The width of the flow passage groove 36 gradually decreases towards the first surface 21. That is, along the direction from the end face 32 of the valve plate 30 to the end face 31 of the valve plate 30, the size of the flow passage groove 36 in the radial direction of the valve plate 30 gradually decreases. The first flow passage port 33, the second blocking portion 35b and the third flow passage port 37 can be formed at the bottom of the flow passage groove 36. The first flow passage port 33 and the third flow passage port 37 can be in the form of elongated slits passing through the valve plate 30. The second blocking portion 35b can be a solid portion between the first flow passage port 33 and the third flow passage port 37.

[0093] With the flow passage groove 36 in this configuration, the fluid medium entering the flow passage groove 36 can generate pressure on the valve plate 30, assisting in pressing the valve plate 30 against the first surface 21, which helps the first side face 31 to closely adhere to the first surface 21, avoiding the occurrence of undesirable leakage. In addition, the width W of the flow passage groove 36 gradually decreases in the direction approaching the first surface 21, i.e. forms a cross-section similar to a V shape, which helps to guide the flow of fluid medium to the first flow passage port 33. The first flow passage port 33, the second blocking portion 35b and the third flow passage port 37 are all formed at the bottom of the flow passage groove 36, which has at least the following two advantages. On the one hand, this configuration increases the size of the flow passage groove 36 in the direction around the axis R, thereby helping to generate greater pressing force and being able to more effectively guide the fluid medium to the first flow passage port 33 and the third flow passage port 37. On the other hand, the valve plate 30 with this configuration has a more compact and simple structure, compared to providing two flow passage grooves 36 respectively for the first flow passage port 33 and the third flow passage port 37.

[0094] With reference to Figure 13When the moving element 30 in contact with the first surface 21 is located in the second rotation interval, the orthographic projection of the second flow-through port 34 and the first flow passage port 22 on the projection plane at least partially overlaps, so that the second flow-through port 34 and the first flow passage port 22 cooperatively form a first straight-through valve port 52. At the same time, the orthographic projection of the third blocking portion 35c on the projection plane covers the orthographic projection of the second flow passage port 23 on the projection plane, so that the entire second flow passage port 23 is blocked by the third blocking portion 35c, and the second fluid path is blocked.

[0095] With reference to Figure 17 When the moving element 30 in contact with the first surface 21 is located in the sixth rotation interval of the plurality of rotation intervals, the orthographic projection of the second flow-through port 34 and the second flow passage port 23 on the projection plane at least partially overlaps, so that the second flow-through port 34 and the second flow passage port 23 cooperatively form a second straight-through valve port 54. At the same time, the orthographic projection of the first blocking portion 35a on the projection plane covers the orthographic projection of the first flow passage port 22 on the projection plane, so that the entire first flow passage port 22 is blocked by the first blocking portion 35a, and the first fluid path is blocked.

[0096] With reference to Figure 18 When the moving element 30 in contact with the first surface 21 is located in the seventh rotation interval of the plurality of rotation intervals, the orthographic projection of the second flow-through port 34 on the projection plane partially overlaps with the orthographic projection of the first flow passage port 22 and the second flow passage port 23 on the projection plane, so that the second flow-through port 34 cooperatively forms a first shunt valve port 55 with the first flow passage port 22, and the second flow-through port 34 cooperatively forms a second shunt valve port 56 with the second flow passage port 23. That is, with reference to Figure 10 and Figure 11 The minimum distance D1 of the first flow passage port 22 and the second flow passage port 23 in the direction around the axis R is less than the size D2 of the second flow-through port 34 in the direction around the axis R, and the maximum distance D3 of the first flow passage port 22 and the second flow passage port 23 in the direction around the axis R is greater than the size D2, so that when the moving element 30 is located in the seventh rotation interval, the orthographic projection of the first flow passage port 22 and the second flow passage port 23 can partially coincide with the orthographic projection of the second flow-through port 34 at the same time.

[0097] In this way, by rotating the moving element 30 between the second rotation interval, the sixth rotation interval and the seventh rotation interval, the first flow passage opening 22 and the second flow passage opening 23 can respectively cooperate with the second flow passage 34 and the third blocking portion 35c to achieve the straight-through and blocking functions for the first fluid path and the second fluid path respectively, can respectively cooperate with the first blocking portion 35a and the second flow passage 34 to achieve the blocking and straight-through functions for the first fluid path and the second fluid path respectively, and can simultaneously cooperate with the second flow passage 34 to achieve the proportional distribution function for the first fluid path and the second fluid path. Accordingly, the valve device 100a will be able to meet the more complex fluid control requirements of the vehicle thermal management system.

[0098] Another embodiment of the utility model provides a valve device 100b. The valve device 100b is basically same with valve device 100, the following will introduce the difference between the two. For the purpose of simplicity, the same elements of valve device 100b and valve device 100 will adopt the same figure mark, and the repeated description will be appropriately omitted.

[0099] Referring to Figure 19 , the valve body 10 of 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 passage opening 22a, and the second surface 21b is provided with a third flow passage opening 22b. The first fluid path between the first interface 11 and the second interface 12 passes through the first flow passage opening 22a and the third flow passage opening 22b. The first flow passage opening 22a and the third flow passage opening 22b are arranged apart in the extension direction of the axis R, that is, the first surface 21a and the second surface 21b are arranged apart in the extension direction of the axis R.

[0100] Continuing to refer to Figure 19 , the moving element 30 is located between the first flow passage opening 22a and the third flow passage opening 22b, that is, between the first surface 21a and the second surface 21b. The moving element 30 can be driven to move between the first position and the second position along the extension direction of the axis R. That is, the moving element 30 can move between the first position and the second position along the extension direction of the axis R, and can also rotate within the plurality of rotation intervals around the direction of the axis R.

[0101] When the moving element 30 is located at the first position, the moving element 30 abuts against the first surface 21a to cooperate with the first flow passage opening 22a, and is separated from the second surface 21b to open the third flow passage opening 22b. When the moving element 30 is located at the first position and located in the first rotation interval, the moving element 30 partially closes the first flow passage opening 22a to form a throttle opening, and opens the third flow passage opening 22b. When the moving element 30 is located at the first position and located in the second rotation interval, the moving element 30 simultaneously opens the first flow passage opening 22a and the third flow passage opening 22b.

[0102] When the moving element 30 is located at the second position, the moving element 30 abuts against the second surface 21b to cooperate with the third flow passage port 22b, and is separated from the first surface 21a to open the first flow passage port 22a. When the moving element 30 is located at the second position and is located in the eighth rotation interval of the plurality of rotation intervals, the moving element 30 partially closes the third flow passage port 22b to form a throttle port, and opens the first flow passage port 22a. When the moving element 30 is located at the second position and is located in the ninth rotation interval of the plurality of rotation intervals, the moving element 30 simultaneously opens the first flow passage port 22a and the third flow passage port 22b.

[0103] When the fluid medium flows from the first interface 11 to the second interface 12, the moving element 30 can be located at the first position, so that the moving element 30 abuts against the first surface 21a and is separated from the second surface 21b. Since the moving element 30 is separated from the second surface 21b, the third flow passage port 22b will be opened, and the fluid medium will directly flow to the first flow passage port 22a through the third flow passage port 22b, which helps to reduce the flow resistance. At this time, if the moving element 30 is located in the first rotation interval, the moving element 30 will partially close the third flow passage port 22b to form a throttle port, thereby realizing the expansion function; if the moving element 30 is located in the second rotation interval, the cooperation of the moving element 30 and the first flow passage port 22a will open the first flow passage port 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.

[0104] When the fluid medium flows from the second interface 12 to the first interface 11, the moving element 30 can be located at the second position, so that the moving element 30 abuts against the second surface 21b and is separated from the first surface 21a. Since the moving element 30 is separated from the first surface 21a, the first flow passage port 22a will be opened, and the fluid medium will directly flow to the third flow passage port 22c through the first flow passage port 22a, which helps to reduce the flow resistance. At this time, if the moving element 30 is located in the eighth rotation interval, the moving element 30 will partially close the first flow passage port 22a to form a throttle port, thereby realizing the expansion function; if the moving element 30 is located in the ninth rotation interval, the cooperation of the moving element 30 and the third flow passage port 22b will open the third flow passage port 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.

[0105] It can be seen that the valve device 100b can provide the fluid medium flowing along the first path with the expansion function and the straight-through function, thereby meeting more complex and diverse fluid control requirements of the vehicle thermal management system.

[0106] Continuing to refer to Figure 19The moving piece 30 includes a first end surface 31a and a second end surface 31b, and the two end surfaces 31a, 31b are located on opposite sides of the moving piece 30 in the extension direction of the axis R. The moving piece 30 abuts against the first surface 21a through the first end surface 31a, and abuts against the second surface 21b through the second end surface 31b. The first end surface 31a, the second end surface 31b, the first surface 21a and the second surface 21b are all flat surfaces and any two of them are parallel to each other. Since the first end surface 31a, the second end surface 31b, the first surface 21a and the second surface 21b of the moving piece 30 are all flat surfaces and parallel to each other, no matter whether the moving piece 30 is in the first position or the second position, the corresponding end surface of the moving piece 30 will tightly abut against the corresponding surface. This parallel and tight contact helps to form a better sealing effect, so that the abutment of the moving piece 30 is more tight, thereby preventing the leakage of the fluid medium. At the same time, the flat and parallel design simplifies the machining and manufacturing process of the parts, and is convenient for later maintenance and replacement.

[0107] With reference back to Figure 19 In some examples, the moving piece 30 can include two dynamic valve plates 30a, 30b, i.e. a first dynamic valve plate 30a and a second dynamic valve plate 30b. The first dynamic valve plate 30a and the second dynamic valve plate 30b are stacked in the extension direction of the axis R, and the first dynamic valve plate 30a is closer to the first surface 21a than the second dynamic valve plate 30b. The first dynamic valve plate 30a and the second dynamic valve plate 30b are combined so that they rotate synchronously around the axis R.

[0108] With reference back to Figure 21 The valve device 100b further includes an elastic piece 50, which is located between the first dynamic valve plate 30a and the second dynamic valve plate 30b. The elastic piece 50 presses the first dynamic valve plate 30a towards the first surface 21a, so that the first surface 21a and the first dynamic valve plate 30a abut against each other. Moreover, the elastic piece 50 also presses the second dynamic valve plate 30b towards the second surface 21b, so that the second surface 21b and the second dynamic valve plate 30b abut against each other.

[0109] In the flow direction from the second interface 12 to the first interface 11, under the driving of the fluid medium from the first flow passage port 22a to the third flow passage port 22b, the first dynamic valve plate 30a will overcome the pressing of the elastic piece 50, move along the axis R away from the first surface 21a to separate from the first surface 21a, so that the moving piece 30 moves from the first position to the second position.

[0110] In the flow direction from the first interface 11 to the second interface 12, under the driving of the fluid medium from the third flow passage port 22b to the first flow passage port 22a, the second dynamic valve plate 30b overcomes the pressing of the elastic piece 50, moves along the axis R away from the second surface 21b to separate from the second surface 21b, so that the moving piece 30 moves from the second position to the first position.

[0111] With this configuration, through the cooperation of the first moving valve plate 30a, the second moving valve plate 30b, and the elastic element 50, the moving element 30 can automatically adjust its position according to the change in the flow direction of the fluid medium, so that the valve device 100b automatically adapts to the change in flow direction. Thus, the movement of the moving element 30 between the first and second positions depends on the change in flow direction, meaning that the valve device 100b can automatically adjust according to the change in flow direction without external power input, thereby improving the response speed and efficiency of flow direction conversion.

[0112] There are several ways to implement the elastic element 50. For example, the elastic element 50 can be a compression spring. Alternatively, the elastic element 50 can be an elastic pad made of an elastic material such as rubber. Another example is that the elastic element 50 can include a pair of magnetic elements, which are respectively attached to the two moving valve plates 30a and 30b with opposite magnetic poles facing each other.

[0113] Valve device 100b may include multiple elastic elements 50, or it may have only one elastic element 50. In the example where valve device 100b includes multiple elastic elements 50, the multiple elastic elements 50 may be arranged at intervals between the two movable valve plates 30 around the axis, which makes the reset action of the movable valve plate 30 more balanced and stable. In the example where valve device 100b has only one elastic element 50, the elastic element 50 may be arranged coaxially with the axis R, which ensures that the force of the elastic element 50 acts along the axis R, thereby making the reset movement of the movable valve plate 30 more stable and reliable.

[0114] A limiting structure can be placed between the first moving valve plate 30a and the second moving valve plate 30b to keep the first moving valve plate 30a and the second moving valve plate 30b rotating synchronously around the axis R.

[0115] As one implementation method, refer to Figure 20 , Figure 22 to Figure 24 The first moving valve plate 30a is provided with at least one limiting recess 38a that is recessed away from the second moving valve plate 30b, and the second moving valve plate 30b is provided with at least one limiting protrusion 38b that protrudes towards the first moving valve plate 30a. The at least one limiting recess 38a can receive at least one limiting protrusion 38b respectively.

[0116] As an alternative implementation, the first moving valve plate 30a may have at least one limiting protrusion 38b recessed away from the second moving valve plate 30b, while the second moving valve plate 30b may have at least one limiting recess 38a protruding towards the first moving valve plate 30a.

[0117] refer to Figure 21 and Figure 23, the first movable valve plate 30a can be provided with a first communication port 33 and a second communication port 34. In some examples, the first movable valve plate 30a can also be provided with a flow-through groove 36. The exemplary configuration of the first communication port 33, the second communication port 34 and the flow-through groove 36 and the advantages thereof can refer to the description in the foregoing embodiment of the valve device 100, which will not be repeated here. When the moving element 30 is located in the first rotation interval, the cooperation between the first flow channel port 22 and the first communication port 33 can refer to Figure 5 and the corresponding description. When the moving element 30 is located in the second rotation interval, the cooperation between the first flow channel port 22 and the second communication port 34 can refer to Figure 6 and the corresponding description.

[0118] Referring to Figure 21 and Figure 24 , the second movable valve plate 30b can also be provided with a first communication port 33 and a second communication port 34. In some examples, the second movable valve plate 30b can also be provided with a flow-through groove 36. The exemplary configuration of the first communication port 33, the second communication port 34 and the flow-through groove 36 and the advantages thereof can refer to the description in the foregoing embodiment of the valve device 100, which will not be repeated here. When the moving element 30 is located in the eighth rotation interval, the cooperation between the third flow channel port 23 and the first communication port 33 can refer to Figure 5 the cooperation between the first flow channel port 22 and the first communication port 33 and the corresponding description. When the moving element 30 is located in the ninth rotation interval, the cooperation between the first flow channel port 22 and the second communication port 34 can refer to Figure 6 the cooperation between the first flow channel port 22 and the first communication port 33 and the corresponding description.

[0119] Further, 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 are the same rotation interval. In this way, the rotation control logic of the moving element 30 when the movable valve plate 30a abuts against the first surface 21a is the same as the rotation control logic of the moving element 30 when the movable valve plate 30b abuts against the second surface 21b, which is conducive to reducing the difficulty of rotation control of the moving element 30.

[0120] By way of example only, the orthographic projection of the first flow channel port 22a and the third flow channel port 22b on the projection plane perpendicular to the axis R coincide, which makes the fluid medium flowing between the two flow channel ports 22a, 22b without excessive detours and bends, which helps to reduce the flow resistance. In addition, the orthographic projection of the first communication port 33 of the first movable valve plate 30a and the first communication port 33 of the second movable valve plate 30b on the projection plane coincide, and the orthographic projection of the second communication port 34 of the first movable valve plate 30a and the second communication port 34 of the second movable valve plate 30b on the projection plane coincide. In this way, the first rotation interval and the eighth rotation interval will be the same rotation interval, and the second rotation interval and the ninth rotation interval will be the same rotation interval.

[0121] Referring to Figure 19 to Figure 22 The valve device 100b can include a first valve plate 21a and a second valve plate 21b. The first valve plate 21a, the moving element 30, and the second valve plate 21b can be stacked along the extension direction of the axis R. The moving element 30 can be located between the first valve plate 21a and the second valve plate 21b. The first surface 21a can be a surface of the first valve plate 20a facing the moving element 30, and the second surface 21b can be a surface of the second valve plate 20b facing the moving element 30. Prospectively, in other examples, the first surface 21a and the second surface 21b can be part of the inner wall surface of the valve body 10.

[0122] Referring to Figure 19 The first interface 11 communicates with the third flow passage port 22b, and the second interface 12 communicates with the first flow passage port 22a. The cross-sectional area of the first interface 11 can be substantially the same as the cross-sectional area of the third flow passage port 22b, and the cross-sectional area of the second interface 12 can be substantially the same as the cross-sectional area of the first flow passage port 22a. According to this configuration, when the valve device 100b is in the straight-through state, the fluid medium can pass through the valve device 100b smoothly without problems such as large pressure changes or gas-liquid changes, which helps to achieve precise control of the flow rate and flow velocity.

[0123] This paper mentions the partial plugging, opening and partial opening of the flow passage port. Partially plugging the flow passage port forms a throttle valve port. The throttle valve port has a small flow area, so that the high-pressure refrigerant pressure drops sharply and evaporates at the same time when passing through the throttle valve port, thereby achieving expansion to exhibit cooling effect. Opening the flow passage port forms a straight-through valve port. The straight-through valve port has a large flow area, so that the fluid medium can flow through the straight-through valve port with small flow resistance. For example, the flow area of the straight-through valve port can be substantially equal to the flow area of the flow passage port itself, for example, the flow area of the straight-through valve port can be not less than 80% of the flow area of the flow passage port itself. Partially opening the flow passage port forms a shunt valve port. Although the flow area of the shunt valve port is smaller than that of the straight-through valve port, the flow area of the shunt valve port is larger than that of the throttle valve port, so that the fluid medium does not evaporate or does not significantly evaporate when flowing through the shunt valve port.

[0124] The rotation interval mentioned in this paper can refer to the position interval of the moving element in the direction around the axis R. One rotation interval can include multiple consecutive positions of the moving element in the direction around the axis R, or can only include one position.

[0125] It should be noted that the various elements described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the various possible combinations of the present application are not described again.

[0126] It should be understood that a plurality of 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 components and / or parts. The disclosure describing a component or part as "a" or "one" does not exclude other components or parts.

[0127] It should be understood that although the terms "first" or "second" and the like can be used herein to describe various elements (such as the first throttle port and the second throttle port), these elements are not limited by these terms since the terms are only used to distinguish one element from another.

[0128] The above describes the basic principles of the present application in combination with specific embodiments, but it should be pointed out that the advantages, advantages, effects and the like mentioned in the present application are only examples and not limitations, and these advantages, advantages, effects and the like cannot be considered as the must-have of each embodiment of the present application. In addition, the above specific details are only for the purpose of example and for the purpose of understanding, and are not limited to the present application, and the above details do not limit the present application to the must-use specific details.

[0129] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A valve device comprising a valve body provided with a first port and a second port, a first fluid path being provided between the first port and the second port, a first surface being provided in the valve body, a first flow passage being formed on the first surface, the first fluid path extending through the first flow passage, characterized in that: the valve device further comprises a moving element provided in the valve body, the moving element being driven to rotate relative to the valve body about an axis in a plurality of rotation intervals, the plurality of rotation intervals comprising a first rotation interval and a second rotation interval; when the moving element abutting against the first surface is located in the first rotation interval, the moving element partially blocks the first flow passage to form a first throttling valve port whose flow area changes with the rotation of the moving element; when the moving element abutting against the first surface is located in the second rotation interval, the moving element opens the first flow passage to form a first straight-through valve port; when the moving element abutting against the first surface is located in a third rotation interval in the plurality of rotation intervals, the moving element blocks the entire first flow passage to cut off the first fluid path; an end surface of the moving element facing the first surface is provided with a first flow-through port, a second flow-through port and a cutting-off portion arranged along a direction around the axis, the cutting-off portion prevents fluid from passing through the moving element, and a plane perpendicular to the axis is defined as a projection plane; when the moving element abutting against the first surface is located in the first rotation interval, the first flow-through port and the first flow passage at least partially overlap in orthographic projection on the projection plane, so that the first flow-through port and the first flow passage cooperatively form the first throttling valve port; when the moving element abutting against the first surface is located in the second rotation interval, the second flow-through port and the first flow passage at least partially overlap in orthographic projection on the projection plane, so that the second flow-through port and the first flow passage cooperatively form the first straight-through valve port; when the moving element abutting against the first surface is located in the third rotation interval, orthographic projection of the cutting-off portion on the projection plane covers orthographic projection of the first flow passage on the projection plane, so that the entire first flow passage is blocked by the cutting-off portion; the first flow-through port is in the shape of an elongated slit extending along a direction around the axis; the moving element comprises a moving valve plate, an end surface of the moving valve plate facing away from the first surface is provided with a flow-through groove, a width of the flow-through groove gradually decreases approaching the first surface, and the first flow-through port is formed at a bottom of the flow-through groove and penetrates through the moving valve plate; the first flow passage is a fan-shaped or fan-ring-shaped through hole; and / or, the second flow-through port is a fan-shaped or fan-ring-shaped through hole penetrating through the moving element, or a fan-shaped or fan-ring-shaped notch; the valve body is further provided with a third port, the first surface is further provided with a second flow passage, a second fluid path is provided between the first port and the third port, and the second fluid path extends through the second flow passage. ​ ​ ​ 2. The valve device according to claim 1, characterized in that ​ 3. The valve device of claim 2, wherein ​ ​ ​ ​ 4. The valve device of claim 3, wherein ​ 5. The valve device of claim 4, wherein ​ 6. The valve device of claim 3, wherein ​ 7. The valve device of claim 1, wherein ​ When the moving element in abutment with the first surface is located in the first rotation interval, the moving element partially closes the first flow passage opening to form the first throttle valve opening and completely closes the second flow passage opening to cut off the second fluid path; When the moving element in abutment with the first surface is located in the third rotation interval of the plurality of rotation intervals, the moving element completely closes the first flow passage opening to cut off the first fluid path and partially closes the second flow passage opening to form the second throttle valve opening whose flow passage area changes with the rotation of the moving element.

8. The valve device of claim 7, wherein When the moving element in abutment with the first surface is located in the fourth rotation interval of the plurality of rotation intervals, the moving element partially closes the first flow passage opening to form the first throttle valve opening and partially closes the second flow passage opening to form the second throttle valve opening.

9. The valve device of claim 8, wherein When the moving element in abutment with the first surface is located in the fifth rotation interval of the plurality of rotation intervals, the moving element completely closes the first flow passage opening to cut off the first fluid path and completely closes the second flow passage opening to cut off the second fluid path.

10. The valve device of claim 9, wherein The first flow passage opening and the second flow passage opening are arranged apart along a direction around the axis, an end face of the moving element facing the first surface is provided with a first cutting portion, a first flow passage opening, a second cutting portion, a third flow passage opening and a third cutting portion arranged along a direction around the axis, the first flow passage opening is located between the first cutting portion and the second cutting portion, the third flow passage opening is located between the second cutting portion and the third cutting portion, and a plane perpendicular to the axis is defined as a projection plane; When the moving element in abutment with the first surface is located in the first rotation interval, the first flow passage opening and the first flow passage opening at least partially overlap in the projection plane, and the first cutting portion covers the second flow passage opening in the projection plane, so that the first flow passage opening and the first flow passage opening cooperatively form the first throttle valve opening, and the second flow passage opening is completely blocked by the first cutting portion; When the moving element in abutment with the first surface is located in the third rotation interval, the third cutting portion covers the first flow passage opening in the projection plane, and the third flow passage opening and the second flow passage opening at least partially overlap in the projection plane, so that the first flow passage opening is completely blocked by the third cutting portion, and the third flow passage opening and the second flow passage opening cooperatively form the second throttle valve opening; When the moving element in abutment with the first surface is located in the fourth rotation interval of the plurality of rotation intervals, the moving element partially closes the first flow passage opening to form the first throttle valve opening and partially closes the second flow passage opening to form the second throttle valve opening. When the moving element in abutment with the first surface is located in the fourth rotation interval, the orthographic projection of the first flow-through port and the second flow passage port on the projection plane at least partially overlaps, and the orthographic projection of the third flow-through port and the first flow passage port on the projection plane at least partially overlaps, so that the third flow-through port and the first flow passage port cooperatively form the first throttling valve port, and the first flow-through port and the second flow passage port cooperatively form the second throttling valve port; When the moving element in abutment with the first surface is located in the fifth rotation interval, the orthographic projection of the third cutoff portion on the projection plane covers the orthographic projection of the first flow passage port on the projection plane, and the orthographic projection of the second cutoff portion on the projection plane covers the orthographic projection of the second flow passage port on the projection plane, so that the entire first flow passage port is blocked by the third cutoff portion, and the entire second flow passage port is blocked by the second cutoff portion.

11. The valve device of claim 10, wherein The moving element comprises a dynamic valve plate, an end face of the dynamic valve plate opposite to the first surface is provided with a flow-through groove, the width of the flow-through groove gradually decreases towards the first surface, the first flow-through port, the second cutoff portion and the third flow-through port are formed at the bottom of the flow-through groove, and the first flow-through port and the third flow-through port are in the form of an elongated slit passing through the dynamic valve plate.

12. The valve device of claim 7, wherein When the moving element in abutment with the first surface is located in the second rotation interval, the moving element opens the first flow passage port to form a first straight-through valve port and blocks the entire second flow passage port to cut off the second fluid path; When the moving element in abutment with the first surface is located in the sixth rotation interval of the plurality of rotation intervals, the moving element opens the second flow passage port to form a second straight-through valve port and blocks the entire first flow passage port to cut off the first fluid path.

13. The valve device of claim 12, wherein, When the moving element in abutment with the first surface is located in the seventh rotation interval of the plurality of rotation intervals, the moving element partially opens the first flow passage port and the second flow passage port to form a first shunt valve port and a second shunt valve port, and rotation of the moving element causes the flow-through areas of the first shunt valve port and the second shunt valve port to change in negative correlation.

14. The valve device of claim 13, wherein The first flow passage port and the second flow passage port are arranged along the direction around the axis, an end face of the moving element facing the first surface is provided with a second flow-through port, a first cutoff portion and a third cutoff portion arranged along the direction around the axis, the second flow-through port is located between the first cutoff portion and the third cutoff portion, and a plane perpendicular to the axis is defined as a projection plane; When the moving element in abutment with the first surface is located in the second rotation interval, the orthographic projection of the second flow-through port and the first flow passage port on the projection plane at least partially overlaps, and the orthographic projection of the third cutoff portion on the projection plane covers the orthographic projection of the second flow passage port on the projection plane, so that the second flow-through port and the first flow passage port cooperatively form the first straight-through valve port, and the entire second flow passage port is blocked by the third cutoff portion; When the moving element in contact with the first surface is located in the sixth rotation interval, the orthographic projection of the second flow passage and the second flow passage port on the projection plane at least partially overlaps, and the orthographic projection of the first cut-off portion on the projection plane covers the orthographic projection of the first flow passage port on the projection plane, so that the second flow passage and the second flow passage port cooperatively form the second straight-through valve port, and the first flow passage port is completely blocked by the first cut-off portion; When the moving element in contact with the first surface is located in the seventh rotation interval, the orthographic projection of the second flow passage on the projection plane partially overlaps with the orthographic projection of the first flow passage and the second flow passage on the projection plane, so that the second flow passage cooperatively forms the first shunt valve port with the first flow passage, and the second flow passage cooperatively forms the second shunt valve port with the second flow passage.

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

16. The valve device of claim 1, wherein The valve body is further provided with a second surface, the second surface is formed with a third flow passage port, and the first fluid path further extends through the third flow passage port, the first flow passage port and the third flow passage port are arranged apart along the extension direction of the axis, the moving element is located between the first flow passage port and the third flow passage port, and is driven to move between a first position and a second position; When the moving element is located in the first position, the moving element is in contact with the first surface and separated from the second surface to open the third flow passage port, so that the moving element located in the first rotation interval partially closes the first flow passage port and opens the third flow passage port, and the moving element located in the second rotation interval simultaneously opens the first flow passage port and the third flow passage port; When the moving element is located in the second position, the moving element is in contact with the second surface and separated from the first surface to open the first flow passage port, so that the moving element located in the eighth rotation interval of the plurality of rotation intervals partially closes the third flow passage port and opens the first flow passage port, and the moving element located in the ninth rotation interval of the plurality of rotation intervals simultaneously opens the first flow passage port and the third flow passage port.

17. The valve device of claim 16, wherein The moving element comprises a first end surface and a second end surface opposite along the extension direction of the axis, the moving element is in contact with the first surface through the first end surface and is in contact with the second surface through the second end surface, the first end surface, the second end surface, the first surface and the second surface are all planes and any two of them are parallel to each other.

18. The valve device of claim 16, wherein, 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 of claim 16, wherein The moving part comprises a first moving valve plate and a second moving valve plate stacked along the extension direction of the axis, the first moving valve plate is closer to the first surface relative to the second moving valve plate, the first moving valve plate and the second moving valve plate are synchronously rotatably combined; The valve device further comprises an elastic part, the elastic part is located between the first moving valve plate and the second moving valve plate, the first moving valve plate is pressed towards the first surface to abut, and the second moving valve plate is pressed towards the second surface to abut; Under the driving of the fluid medium from the first flow channel port to the third flow channel port, the first moving valve plate overcomes the pressing of the elastic part, moves along the axis away from the first surface to separate from the first surface, so that the moving part moves from the first position to the second position; Under the driving of the fluid medium from the third flow channel port to the first flow channel port, the second moving valve plate overcomes the pressing of the elastic part, moves along the axis away from the second surface to separate from the second surface, so that the moving part moves from the second position to the first position.

20. The valve device of any one of claims 16 to 19, wherein, The valve device further comprises 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.

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