Directional valve and automotive thermal management system

Abstract

The present invention provides a reversing valve and an automobile thermal management system, which relate to the technical field of fluid medium control valves, and the main purpose is to solve the technical problem of insufficient regulating function of three-way valves in the prior art. The reversing valve comprises a valve body with a cavity therein and a plunger arranged in the cavity along the axial direction of the valve body; wherein, N interfaces are evenly distributed on the circumference of the valve body, the interfaces are connected to the cavity, a through hole is provided on the plunger, the through hole is connected to at least two interfaces and at least one interface is not connected to the through hole, when the plunger rotates along the axis, the interface corresponding to the through hole is changed; N is an integer and N≥3. The reversing valve can be used in an automobile thermal management system. Since a plurality of interfaces are provided on the valve body, the plunger located inside the valve body can be connected to a plurality of interfaces, so when the plunger rotates through a certain angle, the conduit connected to the plunger will change, so that the flow direction of the fluid medium in the conduit can be conveniently adjusted.

Description

Technical Field

[0001] The present invention relates to the technical field of fluid medium control valves, and in particular to a reversing valve and an automobile thermal management system. Background Art

[0002] With the development of the automobile industry and people's pursuit of travel comfort, the battery cooling system and air-conditioning system in the car are also constantly improving and improving, and the related pipeline design is also constantly optimizing. In the battery cooling system, it is necessary to adjust the flow direction of the battery coolant according to different needs: for example, controlling the coolant to flow between the heater and the battery, between the heat exchanger and the battery, and between the radiator and the battery. In the prior art, a three-way valve is often used to adjust the flow direction of the coolant or other fluid media. However, the traditional three-way valve has limited adjustment capacity and cannot meet the above three different adjustment requirements at the same time. Therefore, it is often necessary to install additional regulating valves to achieve the corresponding functions, which not only makes the relevant adjustment system more complicated, but also affects the working efficiency of the system. Summary of the invention

[0003] The purpose of the present invention is to provide a reversing valve and an automobile thermal management system to solve the technical problem of insufficient regulation function of a three-way valve in the prior art. The preferred technical solution among the many technical solutions provided by the present invention can produce many technical effects as described below.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] The reversing valve provided by the present invention comprises a valve body with a cavity therein and a plunger arranged in the cavity along the axial direction of the valve body; wherein:

[0006] The valve body is evenly distributed with N interfaces on its circumference, the interfaces are connected with the cavity, the plunger is provided with through holes that can connect with different interfaces, when the plunger rotates along the axis, the interface corresponding to the through hole changes; N is an integer and N≥3.

[0007] Since the valve body is provided with multiple interfaces and the number of interfaces is greater than or equal to three, this means that the valve body can be externally connected to at least three conduits, and the plunger located inside the valve body is respectively connected to multiple interfaces. Therefore, when the plunger is rotated through a certain angle, the conduit connected to the plunger will change, thereby conveniently adjusting the flow direction of the fluid medium in the conduit.

[0008] In the above technical solution, preferably, the number of the through hole is one, the through hole is connected to at least two of the interfaces and at least one of the interfaces is not connected to the through hole.

[0009] In the above technical solution, preferably, the two ends of the through hole are respectively a first opening and a second opening, wherein the width of the second opening is greater than that of the first opening; when the first opening is connected to one of the interfaces, the second opening is simultaneously connected to at least two of the interfaces.

[0010] At this time, the fluid medium flows from the first opening into the interior of the plunger through a certain interface, and then flows from the second interface to at least two interfaces. In this process, the direction of the fluid medium is changed.

[0011] In the above technical solution, preferably, the central angle corresponding to the second opening is α, and 120°≤α≤150°.

[0012] In the above technical solution, preferably, the number of the interfaces is four, the through hole is arranged to pass through the axis of the plunger, and one side of the second opening is offset toward the position of the first opening.

[0013] In the above technical solution, preferably, both ends of the through hole are a first opening and a second opening of the same size, and the first opening and the second opening are both connected to one of the interfaces.

[0014] In the above technical solution, preferably, the central angle of the through hole is β, β is an integer multiple of 360° / N and 0°<β≤180°.

[0015] In the above technical solution, preferably, the number of the through holes is not less than two, and any of the through holes is connected to different interfaces.

[0016] In the above technical solution, preferably, the reversing valve further includes a plurality of flow guide tubes, wherein the flow guide tubes are fixedly arranged on the outside of the interface.

[0017] In the above technical solution, preferably, the inner diameter of the flow guide tube includes at least two types.

[0018] In the above technical solution, preferably, the reversing valve further includes a driving device, which is connected to the plunger and drives the plunger to rotate along the axial direction.

[0019] In the above technical solution, preferably, the driving device is a worm gear transmission mechanism.

[0020] The present invention also provides an automobile thermal management system, comprising any of the above-mentioned reversing valves.

[0021] In the automobile thermal management system, the reversing valve can be installed at positions related to battery cooling and air conditioning management, and the flow direction of the fluid in the pipeline system can be adjusted by adjusting the rotation of the plunger in the reversing valve.

[0022] Compared with the prior art, the present invention provides a reversing valve and an automobile thermal management system, wherein the reversing valve includes a valve body with an internal cavity and a plunger located inside the valve body, and a plurality of interfaces are arranged around the valve body. When the plunger rotates, different interfaces can be connected, so that the liquid flowing in through one of the interfaces can flow into different interfaces respectively, so as to conveniently adjust the flow direction of the liquid; in addition, compared with the traditional three-way valve, the plunger can be connected to three or even four interfaces at the same time, which can better adjust the flow direction of the liquid; the rotation angle of the plunger can be accurately controlled by the worm gear transmission system to achieve a better adjustment effect. Considering the limited space of the car, in order to better save the space occupied by the equipment, the diameters of the guide pipes connected to the interfaces are different. The pipeline with a larger flow rate can use a guide pipe with a larger inner diameter, and the pipeline with a smaller flow rate can use a guide pipe with a smaller inner diameter. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 It is a schematic diagram of the overall structure of the reversing valve of the present invention;

[0025] Figure 2 yes Figure 1 Schematic diagram of the cross-sectional structure of the middle valve body;

[0026] Figure 3 yes Figure 1 A schematic diagram of the structure of the plunger in FIG.

[0027] Figure 4 yes Figure 3 A schematic diagram of the cross-sectional structure of the plunger in FIG.

[0028] Figure 5 yes Figure 1 The structural diagram of the worm gear transmission system in FIG.

[0029] Figure 6 It is a schematic diagram of the structure of the driving device and the plunger cooperating with each other in the present invention;

[0030] Figure 7 1 is a schematic diagram of the cross-sectional structure of a valve body in a second embodiment of the reversing valve of the present invention;

[0031] Figure 8 yes Figure 7 Schematic diagram of the structure of the middle plunger;

[0032] Fig. 9 yes Figure 8 A cross-sectional view of the middle plunger. In the figure: 1, valve body; 2, plunger; 21, through hole; 3, interface; 4, first opening; 5, second opening; 6, flow guide tube; 7, worm gear mechanism; 71, motor; 72, worm; 73, first gear; 74, second gear; 75, third gear. DETAILED DESCRIPTION

[0033] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0034] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate directions or positional relationships based on the attached Figure 1 The orientation or positional relationship shown is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0035] Attached Figure 1 It is a schematic diagram of the overall structure of the reversing valve of the present invention; it can be clearly seen from the figure that the valve body of the reversing valve includes two parts, the upper part contains a driving device, and the lower part is provided with a valve body chamber, wherein the plunger is located in the chamber, and in addition, the interfaces of the valve body are also evenly distributed here, and the guide tube is connected to the valve body through the interface.

[0036] Attached Figure 2 yes Figure 1 Schematic diagram of the cross-sectional structure of the middle valve body; in the figure, the plane where the interface is located is the cross-sectional plane, and it can be seen that the plunger is located in the cavity of the valve body and the through hole on the plunger is connected to three different interfaces at the same time.

[0037] Attached Figure 3 yes Figure 1 A schematic diagram of the structure of the plunger in the figure; the upper end of the plunger is connected to the worm gear transmission mechanism, the lower part is a columnar structure, and a through hole penetrating the columnar structure is provided, the two ends of the through hole are respectively a first opening and a second opening of inconsistent sizes, wherein the first opening is a circular structure, and the second opening is a strip structure.

[0038] Attached Figure 4 yes Figure 3 Schematic diagram of the cross-sectional structure of the plunger in the figure; it can be seen more clearly from the figure that the first opening and the second opening are distributed on both sides of the plunger in a straight line direction, and at the same time, one end of the second opening is offset toward the position of the first opening to form an opening with a larger width, which can connect two interfaces at the same time, and α in the figure represents the central angle corresponding to the second opening.

[0039] Attached Figure 5 yes Figure 1 A structural schematic diagram of a worm gear transmission system in the embodiment; the worm gear transmission system comprises a motor, a worm, a primary gear, a secondary gear and a tertiary gear connected in sequence.

[0040] Attached Figure 6 It is a structural schematic diagram of the cooperation between the driving device and the plunger in the present invention; in the figure, the three-stage gear is connected to the plunger. When the motor is working, the three-stage gear finally drives the plunger to rotate around the axis through multi-stage transmission, thereby adjusting the interface connected to the through hole.

[0041] Attached Figure 7 1 is a schematic diagram of the cross-sectional structure of a valve body in a second embodiment of the reversing valve of the present invention;

[0042] Attached Figure 8 yes Figure 7 Schematic diagram of the structure of the middle plunger;

[0043] Attached Fig. 9 yes Figure 8 Cross-section of the center plunger.

[0044] The present invention provides a reversing valve, such as Figure 1 As shown, it includes a valve body 1 with a cavity therein and a plunger 2 arranged in the cavity along the axial direction of the valve body 1; in order to meet the demand for changing the direction of the fluid medium in the pipeline, the circumferential side of the valve body 1 needs to be evenly distributed with at least three interfaces 3 connected to the cavity, and the above interfaces 3 are all located on the same horizontal plane; the plunger 2 is provided with a through hole 21 passing through both ends of the circumferential side, and when one end of the through hole 21 is connected to an interface 3, the other end thereof is connected to at least one interface 3.

[0045] Since the valve body 1 is provided with a plurality of interfaces 3 and the number of interfaces 3 is greater than or equal to three, this means that the valve body 1 can be externally connected to at least three conduits, and the plunger 2 located inside the valve body 1 is respectively connected to the plurality of interfaces 3. Therefore, when the plunger 2 rotates through a certain angle, the conduit connected to the plunger 2 will change, thereby being able to conveniently adjust the flow direction of the fluid medium in the conduit.

[0046] Embodiment 1:

[0047] like Figure 1-6As shown, the plunger 2 located in the middle of the reversing valve is provided with only one through hole 21, and the two ends of the through hole 21 are respectively a first opening 4 and a second opening 5. At this time, the fluid medium flows into the plunger 2 from the first opening 4 through a certain interface 3, and then flows from the second interface 3 to at least two interfaces 3. In this process, the direction of the fluid medium is adjusted.

[0048] Specifically, the number of interfaces 3 of the valve body 1 is set to N (N is an integer greater than or equal to 3). When N is 3, the through hole 21 can and can only connect two interfaces 3. Since the interfaces 3 on the valve body 1 are evenly arranged along the circumference of the valve body 1, the angle between two adjacent interfaces 3 is 120 degrees, and the central angle of the through hole 21 located on the plunger 2 is 120 degrees.

[0049] When N is 4, such as Figure 2 As shown, the through hole 21 can simultaneously connect two interfaces 3 or three interfaces 3. When the through hole 21 simultaneously connects two interfaces 3, the through hole 21 is arranged to pass through the axis of the plunger 2, and the first opening 4 and the second opening 5 are arranged along the length direction of the through hole; or the through hole 21 does not pass through the axis of the plunger 2, and the angle between the first opening 4 and the second opening 5 is 90 degrees.

[0050] It should be noted that Figure 1-2 The valve body 1 is provided with four interfaces 3, which can be connected to four different conduits at most at the same time. When the valve body 1 is connected to four conduits, the reversing valve is a four-way reversing valve; when the valve body 1 is connected to three conduits, the reversing valve is a three-way reversing valve. The interfaces 3 not connected to the conduits can be sealed by a cover or other device.

[0051] When the through hole 21 is connected to the three interfaces 3 at the same time, the structure of the plunger 2 is as follows: Figure 3-4 As shown, the through hole 21 is arranged through the axis of the plunger 2, and at this time, one side of the second opening 5 is offset toward the position of the first opening 4. The central angle of the second opening 5 is Figure 4 The angle α in the figure, the arrow in the lower right corner indicates the extending direction of the through hole 21.

[0052] As an optional implementation, the central angle of the second opening 5 is α, which is about 120 to 150 degrees. Specifically, the optimal angle of the angle α is 130 degrees.

[0053] Similarly, when N is greater than 4, the through hole 21 can simultaneously connect two or three interfaces 3. It should be noted that the size of the central angle corresponding to the through hole 21 will be adjusted according to actual conditions.

[0054] When the through hole 21 is connected to two interfaces 3 at the same time, the central angle β corresponding to the through hole 21 is β, β is an integer multiple of 360° / N and 0°<β≤180°: for example, when N is six, the central angle β corresponding to the through hole 21 can be any one of 60 degrees, 120 degrees, and 180 degrees. That is to say, when the through hole 21 is any of the above structures, the plunger 2 can realize the function of connecting two interfaces 3 at the same time.

[0055] When the plunger 2 is located at a certain fixed angle, the fluid flows into the through hole 21 through a certain interface 3 and flows into another or two other interfaces 3 through the second opening 5. In this process, the fluid medium changes direction once; when it is necessary to adjust the outflow direction of the fluid or the fluid flows into the valve body 1 from other interfaces 3, this can be achieved by driving the plunger 2 to rotate through a driving device.

[0056] Specifically, the rotation angle of the plunger 2 can be 20 to 160 degrees. Specifically, the optimal rotation angle in this embodiment is 105 degrees.

[0057] It should be noted that when the through hole 21 is connected to two interfaces 3 at the same time, the first opening 4 and the second opening 5 located at both ends of the through hole 21 have the same size.

[0058] Considering the sealing performance of the valve body, a sealing gasket is also provided between the plunger 2 and the interface 3 .

[0059] As an optional implementation, the reversing valve further includes a plurality of flow guide tubes 6, wherein the flow guide tubes 6 are fixedly arranged outside the interface 3. The fluid medium flows relative to the valve body 1 through the flow guide tubes 6.

[0060] As an optional embodiment, the inner diameter of the flow guide tube 6 includes at least two types.

[0061] As an optional embodiment, the reversing valve further includes a driving device, which is connected to the plunger 2 and drives the plunger 2 to rotate along the axial direction. The driving device is a worm gear mechanism 7, such as Figure 5 shown.

[0062] The worm gear transmission mechanism 7 includes a motor 71, a worm 72, a primary gear 73, a secondary gear 74 and a tertiary gear 75 connected in sequence, wherein the tertiary gear 75 is connected to the plunger 2, such as Figure 6 shown.

[0063] When the motor 71 is working, the three-stage gear 75 drives the plunger 2 to rotate around the axis through multi-stage transmission, thereby adjusting the interface 3 connected to the through hole 21 to achieve the change of direction of the fluid medium.

[0064] Embodiment 2:

[0065] like Figure 7-9As shown, the difference between the second embodiment and the first embodiment is that the number of the through holes 21 is greater than or equal to two.

[0066] When the number of through holes 21 is 2, as Figure 8-9 As shown, two identical through holes 21 are located on the same horizontal plane of the plunger 2 and the two through holes 21 are symmetrically arranged relative to the vertical plane where the axis of the plunger 2 is located. At this time, the valve body 1 is evenly provided with four different interfaces 3 along the circumference.

[0067] like Figure 7 As shown, when the plunger 2 rotates to Figure 7 When the valve body 1 is in the middle position, the through hole 21 on the left is connected to the two interfaces 3 on the upper end and the left side of the angle, and the through hole 21 on the right is connected to the two interfaces 3 on the lower end and the right side of the angle. When the fluid flows into the valve body 1 through the guide tube 6, it will be reversed by the through hole 21 and flow out through the other interfaces 3, thereby realizing the reversal of the fluid.

[0068] Specifically, the number of interfaces 3 may be greater. In actual production and use, the number of interfaces 3 may be adjusted as needed, and the number of interfaces 3 is not a limitation to this solution.

[0069] The present invention also provides an automobile thermal management system, comprising any one of the above-mentioned reversing valves.

[0070] In the automobile thermal management system, the reversing valve can be installed at positions related to battery cooling and air conditioning management, and the flow direction of the fluid in the pipeline system can be adjusted by adjusting the rotation of the plunger 2 in the reversing valve.

[0071] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A reversing valve, characterized in that: It comprises a valve body with a cavity therein and a plunger arranged in the cavity along the axial direction of the valve body; wherein, The valve body is evenly distributed with N interfaces on its circumference, the interfaces are connected with the cavity, the plunger is provided with through holes that can be connected with different interfaces, when the plunger rotates along the axis, the interface corresponding to the through hole changes, N is an integer and N≥3; The through hole is connected to at least two of the interfaces and at least one of the interfaces is not connected to the through hole; The two ends of the through hole are respectively a first opening and a second opening, wherein the width of the second opening is greater than that of the first opening; when the first opening is connected to one of the interfaces, the second opening is simultaneously connected to at least two of the interfaces; One side of the second opening is offset toward the location of the first opening; The central angle corresponding to the second opening is α, and 120°≤α≤150°.

2. The reversing valve according to claim 1, characterized in that: The number of the through hole is one.

3. The reversing valve according to claim 2, characterized in that: The number of the interfaces is four, and the through hole is arranged to pass through the axis of the plunger.

4. The reversing valve according to claim 1, characterized in that: The number of the through holes is not less than two, and any of the through holes is connected to different interfaces.

5. The reversing valve according to any one of claims 1 to 4, characterized in that: The reversing valve further comprises a plurality of flow guide tubes, wherein the flow guide tubes are fixedly arranged on the outside of the interface.

6. The reversing valve according to claim 1, characterized in that: The reversing valve also includes a driving device, which is connected to the plunger and drives the plunger to rotate along the axial direction.

7. An automotive thermal management system, characterized in that: A reversing valve comprising the reversing valve according to any one of claims 1 to 6.

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