Multi-way valve

Abstract

The utility model provides a multi-way valve, and relates to the technical field of valves. The multi-way valve comprises a valve body which is provided with a containing cavity, and the valve body is provided with an opening communicating with the containing cavity; the valve cover covers the opening; the valve element is arranged in the containing cavity, the valve element comprises a cylindrical body part and a core shaft which are connected, the core shaft penetrates through the valve cover, the body part is provided with a first axial end face and a second axial end face, and the valve element can rotate relative to the containing cavity; and the wear-resistant part is located between the first axial end face and the valve cover, the wear-resistant part abuts against the first axial end face and the valve cover, and the wear-resistant part can be driven by the valve element to rotate relative to the valve cover. The driving torque of the multi-way valve is small, and abrasion between the valve element and the valve deck is small.

Description

Technical Field

[0001] The present application relates to the field of valve technology, and in particular to a multi-way valve. Background Art

[0002] The automotive thermal management system includes multiple cooling circuits, wherein the on / off, flow direction, and flow rate of the cooling circuits are controlled by actuators driving water valves.

[0003] In particular, in the thermal management system of new energy vehicles, in order to achieve personalized thermal management mode requirements, a thermal management system usually needs to set up multiple water valves. In order to simplify the system structure, in related technologies, multiple two-way valves and three-way valves are integrated into a multi-way water valve to realize different cooling circuit switching.

[0004] However, the driving torque of the multi-way valve in the related art is too large, which will cause a large amount of wear on the internal components of the multi-way valve, thereby deteriorating the internal sealing performance of the multi-way valve and making liquid leakage more likely to occur. Utility Model Content

[0005] The present application provides a multi-way valve, wherein a wear-resistant part is provided between the valve core and the valve cover of the multi-way valve, thereby reducing the wear between the valve core and the valve cover and reducing the driving torque of the multi-way valve.

[0006] In order to achieve the above objectives, this application provides the following technical solutions:

[0007] A first aspect of the present application provides a multi-way valve, comprising:

[0008] A valve body having an accommodating cavity, wherein the valve body is provided with an opening communicating with the accommodating cavity;

[0009] a valve cover, arranged to cover the opening;

[0010] a valve core disposed in the accommodating cavity, the valve core comprising a connected cylindrical body portion and a core shaft, the core shaft penetrating the valve cover, the body portion having a first axial end surface and a second axial end surface, and the valve core being rotatable relative to the accommodating cavity;

[0011] The wear-resistant part is located between the first axial end surface and the valve cover. The wear-resistant part is in contact with the first axial end surface and the valve cover. The wear-resistant part can be driven by the valve core to rotate relative to the valve cover.

[0012] In a possible implementation, the wear-resistant part includes an annular base, a protrusion is provided along the circumference of the annular base, and the protrusion extends toward the first axial end surface;

[0013] The first axial end surface of the valve core is provided with a groove, and the protrusion is engaged and fixed with the groove.

[0014] In a possible implementation, there are one or more protrusions, the multiple protrusions are arranged at intervals, and the protrusions are arranged corresponding to the grooves.

[0015] In a possible implementation, the wear-resistant part is made of polytetrafluoroethylene or polyoxymethylene.

[0016] In a possible implementation, the diameter of the annular base of the wear-resistant part is larger than 1 / 2 of the outer diameter of the first axial end surface of the valve core.

[0017] In a possible implementation, the friction coefficient of the wear-resistant part is smaller than the friction coefficient of the valve core and the valve cover.

[0018] In one possible implementation, the wear-resistant part includes a first bearing ring, a second bearing ring, and a roller rollingly connected between the first bearing ring and the second bearing ring, and the wear-resistant part rolls between the second axial end face of the valve core and the valve cover through the roller.

[0019] In one possible implementation, a first groove is provided on the second axial end face of the valve core, and a second groove is provided on the side of the valve cover facing the second axial end face. The first groove and the second groove are both annular grooves, and the first bearing ring and the second bearing ring are respectively embedded in the first groove and the second groove.

[0020] In a possible implementation, there are a plurality of rollers, and the plurality of rollers are arranged at intervals along the circumference of the first bearing ring.

[0021] In a possible implementation, the first bearing ring and the second bearing ring are made of stainless steel or ceramic.

[0022] The multi-way valve provided by this application has at least the following beneficial effects:

[0023] The multi-way valve sets a wear-resistant part between the valve core and the valve cover, and the wear-resistant part abuts against the valve cover, so that the wear-resistant part can be driven by the valve core to rotate relative to the valve cover. In this way, the friction and wear between the valve core and the valve cover during the operation of the multi-way valve are significantly reduced, and the service life of the parts of both is improved. At the same time, the driving torque of the multi-way valve is also reduced, and the possibility of sticking and leakage is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 A schematic diagram of the overall structure of the multi-way valve provided in an embodiment of the present application;

[0026] Figure 2 A schematic diagram of the exploded structure of a multi-way valve provided in an embodiment of the present application;

[0027] Figure 3 A side view of a multi-way valve provided in an embodiment of the present application;

[0028] Figure 4 for Figure 3 Schematic diagram of the cross-sectional structure of the medium multi-way valve along the AA direction;

[0029] Figure 5 A schematic structural diagram of a valve body of a multi-way valve provided in an embodiment of the present application;

[0030] Figure 6 To show Figure 1 Schematic diagram of the structure of the valve core of the multi-way valve;

[0031] Figure 7 To show Figure 6 A schematic structural diagram of the bottom of the middle valve core;

[0032] Figure 8 for Figure 2 Schematic diagram of the structure of the wear-resistant parts of the medium multi-way valve;

[0033] Figure 9 A cross-sectional view of a multi-way valve including a wear-resistant member according to another embodiment of the present application;

[0034] Figure 10 for Figure 9 Schematic diagram of the structure of medium wear-resistant parts.

[0035] Description of reference numerals:

[0036] 100, valve body;

[0037] 110, accommodating cavity; 120, opening; 130, water outlet;

[0038] 200, valve core;

[0039] 210. Ontology part;

[0040] 211. First axial end surface; 2111. Groove;

[0041] 212, second axial end surface; 2121, first slot;

[0042] 220, mandrel;

[0043] 230, first flow channel; 240, second flow channel;

[0044] 300, valve cover;

[0045] 310, second card slot;

[0046] 400, wear-resistant parts;

[0047] 410, annular base; 411, raised portion;

[0048] 420, first bearing ring; 430, second bearing ring; 440, roller;

[0049] 500, first sealing member;

[0050] 600. Second sealing member.

[0051] The above drawings illustrate specific embodiments of the present application, which will be described in more detail below. These drawings and the textual description are not intended to limit the scope of the present application in any way, but rather to illustrate the concepts of the present application to those skilled in the art by reference to specific embodiments. DETAILED DESCRIPTION

[0052] As mentioned in the background, in the thermal management systems of new energy vehicles, multiple water valves are typically required to achieve personalized thermal management modes. To simplify the system structure, the related art integrates multiple two-way and three-way valves into a single multi-way water valve to switch between different cooling circuits. However, the excessive driving torque of these multi-way valves can cause significant wear on the valve's internal components, deteriorating the valve's internal sealing and potentially leading to fluid leakage.

[0053] The main reason for this problem is that the valve body of the multi-way valve has multiple flow channels, and the valve core rotates relative to the valve body to switch the flow of coolant in different flow channels. During this process, the rotation of the valve core will cause friction and wear relative to the valve cover provided on one side of the valve body. When the pressure between different flow channels is different, the valve core will be subjected to eccentric force, causing uneven surface contact wear between the valve core and the valve cover, thereby aggravating the friction and wear between the two, thereby reducing the sealing between the valve core and the valve cover, and making it easy for coolant leakage to occur.

[0054] In response to the above technical problems, an embodiment of the present application provides a multi-way valve, which arranges a wear-resistant part with a small friction coefficient between the valve core and the valve cover, and the wear-resistant part abuts against the valve cover, so that the wear-resistant part can be driven by the valve core and rotate relative to the valve cover. In this way, the friction and wear between the valve core and the valve cover during the operation of the multi-way valve are significantly reduced, and the life of the parts of both are improved. At the same time, the driving torque of the multi-way valve is also reduced, and the possibility of sticking and leakage is reduced.

[0055] In order to make the above-mentioned purposes, features and advantages of the embodiments of the present application more obvious and easy to understand, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0056] refer to Figures 1 to 10 The multi-way valve provided in the embodiment of the present application includes: a valve body 100, having an accommodating cavity 110, the valve body 100 is provided with an opening 120 connected to the accommodating cavity 110; a valve cover 300, which is covered with the opening 120; a valve core 200, which is arranged in the accommodating cavity 110, the valve core 200 includes a connected cylindrical main body portion 210 and a core shaft 220, the core shaft 220 passes through the valve cover 300, the main body portion has a first axial end face 211 and a second axial end face 212, and the valve core 200 can rotate relative to the accommodating cavity 110; a wear-resistant part 400, which is connected to the valve core 200, and the wear-resistant part 400 is in contact with the valve cover 300, the friction coefficient of the wear-resistant part 400 is smaller than the friction coefficient of the valve core 200 and the friction coefficient of the valve cover 300, and the wear-resistant part 400 can be driven by the valve core 200 to rotate relative to the valve cover 300.

[0057] The multi-way valve is provided with a wear-resistant part 400 between the valve core 200 and the valve cover 300, and the wear-resistant part 400 is in contact with the valve cover 300, so that the wear-resistant part 400 can be driven by the valve core 200 and rotate relative to the valve cover 300. In this way, the friction and wear between the valve core 200 and the valve cover 300 during the operation of the multi-way valve is significantly reduced, and the service life of the parts of both is improved. At the same time, the driving torque of the multi-way valve is also reduced, and the possibility of sticking and leakage is reduced.

[0058] In this embodiment, the lower end surface of the bottom of the valve body 100 is provided with multiple water openings 130, the valve core 200 is located in the accommodating cavity 110 of the valve body 100, and the bottom of the valve core 200 is concavely formed with a first flow channel 220 and a second flow channel 230, which are respectively used to pass coolant. The first flow channel 220 and the second flow channel 230 both have a liquid inlet and a liquid outlet, and the valve core 200 can rotate along the central axis of the valve body 100.

[0059] In more examples, a first seal 500 is provided between the valve core 200 and the valve body 100. Specifically, a sealing groove is provided on the bottom wall of the valve body 100, and the first seal 500 is embedded in the sealing groove for sealing between the end face of the main body 210 of the valve core 200 facing away from the valve cover 300 and the bottom wall of the valve body 100; a second seal 600 is also sleeved on the core shaft 220 of the valve core 200, the valve cover 300 is fixedly connected to the valve body 100, and an axial hole is provided on the valve cover 300, and the core shaft 220 passes through the valve cover 300 through the axial hole, and the second seal 600 is used for sealing the core shaft 220 and the axial hole.

[0060] It should be noted that the working process of the multi-way valve of the embodiment of the present application is as follows: when the cooling liquid of the thermal management system enters the first flow channel 220 and the second flow channel 230 of the valve core 200 through the water port 130 of the valve body 100, after heat exchange, the cooling liquid flows back into the thermal management system from the water port 130 of the valve body 100. The valve core 200 can rotate at different angles to realize the switching between different modes of the system. The liquid flow rate and pressure in the first flow channel 220 and the second flow channel 230 are different. When the first flow channel 220 and the second flow channel 230 are connected, the cooling liquid flows back into the thermal management system from the water port 130 of the valve body 100. When liquid 30 flows through, the valve core 200 will move toward the second sealing member 600 under the action of hydraulic pressure. The inconsistent pressure of the two flow channels will cause the valve core 200 to be eccentrically stressed, thereby increasing the friction and wear between the valve core 200 and the valve cover 300. The setting of the wear-resistant part 400 in the embodiment of the present application balances the contact stress between the valve core 200 and the valve cover 300, reduces the contact surface wear between the valve core 200 and the valve cover 300, reduces the influence of the rotation of the valve core 200 on the compression of the first sealing member 500, and avoids liquid leakage between different circuits.

[0061] like Figure 4 and Figure 8 As shown, the first embodiment of the wear-resistant part 400 of the present application includes an annular base 410, and a protrusion 411 is arranged along the circumference of the annular base 410, and the protrusion 411 extends toward the first axial end face 211; the first axial end face 211 of the valve core is provided with a groove 2111, and the protrusion 411 is fixed with the groove 2111. In this embodiment, there are five protrusions 411. In other embodiments, the number of protrusions 411 can also be set to three or more, and the grooves 2111 are provided in equal amounts corresponding to the protrusions 411. There is no specific limitation and it can be set according to actual working conditions.

[0062] Furthermore, the protrusion 411 is provided on the end surface of the annular base 410 along its own axial direction facing the valve core 200 . Thus, the wear-resistant part 400 with the annular base 410 is beneficial to anti-wear and friction reduction between the valve core 200 and the valve cover 300 .

[0063] In some embodiments, the wear-resistant part 400 is made of polytetrafluoroethylene or polyformaldehyde. When the wear-resistant part 400 made of this material is rubbed with the valve cover 300, the friction coefficient is low, so that the wear of the two is small after the valve core 200 rotates relative to the valve cover 300, thereby improving the sealing performance of the valve core 200.

[0064] Furthermore, the diameter of the annular base 410 is greater than or equal to half of the outer diameter of the valve core 200. For example, the diameter of the annular base 410 is half of the outer diameter of the valve core 200, or the diameter of the annular base 410 is two-thirds of the outer diameter of the valve core 200. In this way, there is a larger friction contact radius between the annular base 410 and the valve cover 300, which can eliminate the tilt of the valve core 200 caused by uneven force on the first flow channel 220 and the second flow channel 230 of the valve core 200, and reduce the possibility of eccentric leakage of the second seal 700 and leakage of the first seal 600. Furthermore, the friction coefficient of the wear-resistant part 400 is smaller than the friction coefficient of the valve core 200 and the valve cover 300.

[0065] In some embodiments, the contour shape of the protrusion 411 is adapted to the contour shape of the groove 2111. For example, the contour shapes of the protrusion 411 and the groove 2111 are both prismatic, or the contour shapes of the protrusion 411 and the groove 2111 are both cylindrical. In this way, the connection stability between the protrusion 411 and the groove 2111 is enhanced.

[0066] like Figure 9 and Figure 10 As shown, this is a second embodiment of the wear-resistant part 400 of the present application. The wear-resistant part 400 includes a first bearing ring 420, a second bearing ring 430, and a roller 440 rollingly connected between the first bearing ring 420 and the second bearing ring 430. The wear-resistant part 400 rolls between the second axial end face 212 of the valve core 200 and the valve cover through the roller 440. In this way, the friction between the valve core 200 and the valve cover 300 is changed from sliding friction to rolling friction, which significantly reduces the friction coefficient between the two and reduces material wear.

[0067] Furthermore, a first groove 2121 is provided on the second axial end face 212 of the valve core, and a second groove 310 is provided on the side of the valve cover 300 facing the second axial end face 212. The first groove 2121 and the second groove 310 are both annular grooves, and the first bearing ring 420 and the second bearing ring 430 are respectively embedded in the first groove 2121 and the second groove 310. In this way, not only the connection between the two bearing rings and the valve core 200 and the valve cover 300 is strengthened, but also the overall structural compactness of the multi-way valve is improved.

[0068] In some embodiments, there are multiple rollers 530, and the multiple rollers 530 are arranged at intervals along the circumference of the first bearing ring 510. For example, there are ten rollers 530, or there are twelve rollers 530, so that the rolling friction performance between the valve core 200 and the valve cover 300 is enhanced.

[0069] In more embodiments, the first bearing ring 420 and the second bearing ring 430 are made of stainless steel or ceramic, which has the characteristics of wear resistance, high temperature resistance and corrosion resistance.

[0070] In the description of this application, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0071] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. Throughout the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0072] In this application, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0073] In this application, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0074] The various embodiments or implementation methods in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the various embodiments can be referenced to each other.

[0075] It should be noted that phrases such as "one embodiment," "an embodiment," "exemplary embodiments," and "some embodiments" in this specification may indicate embodiments that may include a particular feature, structure, or characteristic, but not every embodiment necessarily includes that particular feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Furthermore, when a particular feature, structure, or characteristic is described in conjunction with an embodiment, it is within the knowledge of those skilled in the art to implement such feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not.

[0076] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A multi-way valve, characterized in that: include: A valve body having an accommodating cavity, wherein the valve body is provided with an opening communicating with the accommodating cavity; a valve cover, arranged to cover the opening; a valve core disposed in the accommodating cavity, the valve core comprising a connected cylindrical body portion and a core shaft, the core shaft penetrating the valve cover, the body portion having a first axial end surface and a second axial end surface, and the valve core being rotatable relative to the accommodating cavity; The wear-resistant part is located between the first axial end surface and the valve cover. The wear-resistant part is in contact with the first axial end surface and the valve cover. The wear-resistant part can be driven by the valve core to rotate relative to the valve cover.

2. The multi-way valve according to claim 1, characterized in that The wear-resistant part includes an annular base, a protrusion is provided along the circumference of the annular base, and the protrusion extends toward the first axial end surface; The first axial end surface of the valve core is provided with a groove, and the protrusion is engaged and fixed with the groove.

3. The multi-way valve according to claim 2, characterized in that: There are one or more protrusions, the multiple protrusions are arranged at intervals, and the protrusions are arranged corresponding to the grooves.

4. The multi-way valve according to claim 2, characterized in that The material of the wear-resistant part is polytetrafluoroethylene or polyoxymethylene.

5. The multi-way valve according to claim 2, characterized in that: The diameter of the annular base of the wear-resistant part is greater than half of the outer diameter of the first axial end surface of the valve core.

6. The multi-way valve according to any one of claims 2 to 5, characterized in that: The friction coefficient of the wear-resistant parts is smaller than the friction coefficient of the valve core and the valve cover.

7. The multi-way valve according to claim 1, characterized in that The wear-resistant part includes a first bearing ring, a second bearing ring, and a roller rollingly connected between the first bearing ring and the second bearing ring. The wear-resistant part rolls between the second axial end surface of the valve core and the valve cover through the roller.

8. The multi-way valve according to claim 7, characterized in that: A first groove is provided on the second axial end face of the valve core, and a second groove is provided on the side of the valve cover facing the second axial end face. The first groove and the second groove are both annular grooves, and the first bearing ring and the second bearing ring are respectively embedded in the first groove and the second groove.

9. The multi-way valve according to claim 8, characterized in that There are a plurality of rollers, and the plurality of rollers are arranged at intervals along the circumference of the first bearing ring.

10. The multi-way valve according to any one of claims 7 to 9, characterized in that: The first bearing ring and the second bearing ring are made of stainless steel or ceramic.

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