Multi-way valve and vehicle

Abstract

The invention provides a multi-way valve and a vehicle. The multi-way valve comprises a valve body, a valve element and a membrane. The valve body comprises a plurality of partition plates which are arranged in a staggered mode and form a plurality of flow guide holes. The valve element is rotatably arranged in the valve body. The diaphragm is installed between the valve body and the valve element. The diaphragm is provided with a plurality of circulation holes, the circulation holes correspond to the flow guide holes in a one-to-one mode, the diaphragm is provided with a plurality of skirt edges extending towards the valve body, and each skirt edge abuts against the side wall of the partition plate. According to the diaphragm valve, the plurality of skirt edges are arranged on the diaphragm, each skirt edge abuts against the side wall of the partition plate, and then the diaphragm is positioned in the axial direction and the radial direction through the partition plate, so that the diaphragm is not prone to displacement, the deformation resistance of the diaphragm is improved, and meanwhile the sealing performance between the diaphragm and the valve body is guaranteed.

Description

Technical Field

[0001] The present application relates to the technical field of thermal management systems, and in particular to a multi-way valve and a vehicle. Background Art

[0002] Among the components of new energy vehicles, the thermal management system is a crucial component, crucial for vehicle range, battery safety, and passenger comfort. Within this thermal management system, various water valves, especially multi-way valves connecting multiple circuits, play a key role in the system's energy conservation and reliability.

[0003] Because the valve body and valve core in a multi-way valve are both made of hard materials, sealing is difficult and prone to wear. Therefore, a diaphragm is usually placed between the two. A groove structure is generally added between the valve body and the diaphragm to improve the diaphragm's deformation resistance and sealing ability. However, since the simple sealing surface between the valve body and the diaphragm is replaced by a complex sealing surface with grooves, the deformation resistance and sealing ability between the diaphragm and the valve body are limited.

[0004] Therefore, it is necessary to design a multi-way valve and a vehicle that solve the above technical problems. Summary of the Invention

[0005] The present application provides a multi-way valve and a vehicle, which improve the deformation resistance of the diaphragm while ensuring the sealing between the diaphragm and the valve body.

[0006] According to a first aspect of the embodiments of this specification, a multi-way valve is provided, comprising a valve body, a valve core and a diaphragm; the valve body comprises a plurality of partitions, which are arranged alternately and form a plurality of guide holes; the valve core is rotatably arranged in the valve body; the diaphragm is installed between the valve body and the valve core; the diaphragm is provided with a plurality of flow holes, which correspond one-to-one to the guide holes, and the diaphragm is provided with a plurality of skirts extending toward the valve body, each of the skirts abutting against the side wall of the partition.

[0007] Furthermore, a positive step is provided at one end of the skirt away from the diaphragm, and the positive step is arranged on the outer side wall of the skirt, and a reverse step cooperating with the positive step is provided on the side wall of the partition.

[0008] Furthermore, each of the skirts surrounds the circulation hole and forms a flow channel, and the inner wall of the flow channel is flush with the connection between the hole wall of the circulation hole.

[0009] Furthermore, the diaphragm is provided with a positioning rib, which surrounds the skirt and abuts against the outer side wall of the skirt; the radial thickness of the positioning rib is smaller than the radial thickness of the skirt.

[0010] Furthermore, the adjacent skirts surrounding the two adjacent flow channels and the positioning ribs together form a limiting groove, and the limiting groove has an opening for inserting the partition; and a plurality of saw teeth pointing to the opening are provided in the limiting groove.

[0011] Furthermore, the diaphragm includes an upper surface and a lower surface that are arranged opposite to each other, a transition surface is provided between the upper surface and the flow hole, and the transition surface is inclined toward the inside of the flow hole.

[0012] Furthermore, the inner radial direction of the flow channel increases gradually toward a side away from the diaphragm.

[0013] Furthermore, the diaphragm includes a first film layer in contact with the valve body and a second film layer in contact with the valve core, the elastic coefficient of the first film layer is greater than that of the second film layer, and the friction coefficient of the first film layer is greater than that of the second film layer.

[0014] Furthermore, an accommodating groove is provided on the inner wall of the valve body, and the diaphragm is accommodated in the accommodating groove; the accommodating groove has a sealing surface, and the sealing surface is arranged in an arc shape along a direction perpendicular to the axial direction.

[0015] According to a second aspect of an embodiment of this specification, a vehicle is provided, comprising the multi-way valve described in the first aspect.

[0016] The present application has the following beneficial effects: the present application arranges several skirts on the diaphragm, each skirt abuts against the side wall of the partition, thereby positioning the diaphragm in the axial and radial directions by the partition, so that the diaphragm is not easily displaced, thereby improving the diaphragm's anti-deformation ability and ensuring the sealing between the diaphragm and the valve body.

[0017] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the specification and, together with the description, serve to explain the principles of the specification.

[0019] Figure 1 It is an exploded view of the multi-way valve of the present application;

[0020] Figure 2 yes Figure 1 Assembly drawing;

[0021] Figure 3 It is a structural diagram of the valve body of this application;

[0022] Figure 4 It is a cross-sectional view of the assembly of the valve body and valve core of the present application;

[0023] Figure 5 This is a schematic structural diagram of a diaphragm in one embodiment of the present application;

[0024] Figure 6 yes Figure 5 Structural diagram from another perspective;

[0025] Figure 7 yes Figure 5 Radial cross-sectional view;

[0026] Figure 8 yes Figure 5 Axial cross-sectional view of

[0027] Figure 9 is a radial cross-sectional view of the multi-way valve of the present application in a transition state;

[0028] Figure 10 yes Figure 9 A partial cross-sectional view of

[0029] Figure 11 is an axial cross-sectional view of the multi-way valve of the present application;

[0030] Figure 12 is a schematic structural diagram of a diaphragm in another embodiment of the present application;

[0031] Figure 13 yes Figure 12 Structural diagram from another perspective;

[0032] Figure 14 yes Figure 12 Radial cross-sectional view;

[0033] Figure 15 yes Figure 12 Axial cross-sectional view.

[0034] Description of reference numerals:

[0035] 10-valve body; 11-partition plate; 111-reverse step; 12-flow guide hole; 13-accommodation groove; 131-sealing surface;

[0036] 20-valve core;

[0037] 30 - diaphragm; 31 - flow hole; 311 - transition surface; 32 - skirt; 321 - flow channel; 33 - forward step; 34 - positioning rib; 35 - limiting groove; 36 - serration; 37 - upper surface; 38 - lower surface;

[0038] 40-actuator; 41-sealing ring;

[0039] 50-valve cover; 51-shaft sleeve;

[0040] 60-Sealing gasket. DETAILED DESCRIPTION

[0041] Here, the technical solutions in the embodiments (or "implementations") of the present application will be clearly and completely described in conjunction with the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0042] If there are terms related to directional indications or positional relationships in the embodiments of this application (such as up, down, left, right, front, back, inside, outside, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, width, counterclockwise, clockwise, axial, radial, circumferential, etc.), such terms are only used to explain the relative positional relationship, movement, etc. between the components in a specific posture (as shown in the accompanying drawings); if the specific posture changes, the directional indication or positional relationship will also change accordingly. In addition, the terms "first" and "second" in the embodiments of this application are only used for the purpose of convenience of description and should not be understood as indicating or implying relative importance.

[0043] Next, the embodiments of this specification are described in detail.

[0044] Reference Figure 1-2 As shown, the present application discloses a multi-way valve, which includes a valve body 10, a valve core 20, a diaphragm 30, an actuator 40, a valve cover 50 and a sealing gasket 60. The valve core 20 is cylindrical as a whole and is rotatably arranged in the valve body 10. The diaphragm 30 is installed between the valve body 10 and the valve core 20. The actuator 40 is arranged at one end of the valve body 10 through a sealing ring 41 and is rotatably connected to the valve core 20. The output end of the valve core 20 extends out of the valve cover 50 and rotates along its own axis under the drive of the actuator 40, cooperating with the valve body 10 to realize switching of different flow channels. The valve cover 50 is covered on the other end of the valve body 10 by a shaft sleeve 51. The sealing gasket 60 is fixed at the outlet of the valve body 10.

[0045] Please also refer to Figure 3-4 As shown, a cavity is formed within the valve body 10, and a valve core 20 is located within the cavity. The valve body 10 includes a plurality of partitions 11, which are arranged in a staggered manner to form a plurality of flow guide holes 12. The flow guide holes 12 connect the exterior of the valve body 10 with the valve core 20. When the multi-way valve is in operation, the valve core 20 rotates relative to the valve body 10, and by cooperating with different flow guide holes 12, it switches between different flow paths, thereby forming different liquid passages.

[0046] The inner wall of the valve body 10 defines a receiving groove 13, which receives the diaphragm 30. The receiving groove 13 has a sealing surface 131, which is curved perpendicular to the axial direction. This allows the diaphragm 30 to conform to the cylindrical surface of the valve core 20, thereby achieving a seal between the valve body 10 and the valve core 20. The provision of the receiving groove 13 facilitates the secure positioning of the diaphragm 30, effectively preventing it from rotating with the valve core 20. In some cases, the diaphragm 30 can also be positioned around the circumference of the valve core 20.

[0047] The diaphragm 30 comprises a first membrane layer (not shown) that contacts the valve body 10 and a second membrane layer (not shown) that contacts the valve core 20. The two membrane layers are bonded together. The first membrane layer has a greater elastic modulus and a greater coefficient of friction than the second membrane layer, thereby reducing the frictional torque during rotation of the valve core 20. In some cases, the first membrane layer is made of rubber and the second membrane layer is made of PTFE.

[0048] Please also refer to Figure 5-8 As shown, the diaphragm 30 is provided with a plurality of flow holes 31 , which correspond one-to-one to the guide holes 12 , thereby forming a plurality of liquid channels connected to the valve body 10 to meet the conduction of different circuits.

[0049] The diaphragm 30 is provided with a plurality of skirts 32 extending toward the valve body 10. Each skirt 32 surrounds the flow hole 31 and forms a flow channel 321. The inner radial direction of the flow channel 321 increases gradually away from the side of the diaphragm 30. The gradual expansion design can avoid flow separation and eddy currents caused by sudden expansion of the fluid, thereby reducing turbulent energy loss.

[0050] The inner wall of the flow channel 321 is flush with the wall of the flow hole 31. Each skirt 32 abuts against the side wall of the partition 11, that is, the skirt 32 extends into the guide hole 12 and fits with the hole wall of the guide hole 12, so that the diaphragm 30 is positioned in both axial and radial directions.

[0051] In other cases, the skirt 32 may partially surround the flow hole 31 without forming the flow channel 321, thereby only contacting a portion of the hole wall of the guide hole 12. Alternatively, in other cases, the skirt 32 may partially surround the flow hole 31 and form the flow channel 321. The specific structure and number of extensions of the skirt 32 are not limited herein, as long as the skirt 32 is in contact with the side wall of the partition 11.

[0052] In another embodiment, please refer to Figure 9-15As shown, the end of the skirt 32 away from the diaphragm 30 is further provided with a positive step 33, which acts as a barb. The positive step 33 is arranged on the outer sidewall of the skirt 32. The sidewall of the partition 11 is provided with a reverse step 111 that cooperates with the positive step 33. Thus, the positive step 33 and the reverse step 111 cooperate together to form the effect of two barbs hooking together, thereby improving the stability of the connection between the diaphragm 30 and the valve body 10.

[0053] When the positive step 33 and the negative step 111 are properly aligned, if the diaphragm 30 is subjected to pressure differential force and friction, if the diaphragm 30 deforms to one side, it will pull the skirt 32 on the other side outward. However, due to the tension between the positive step 33 and the negative step 111 on the skirt 32 on the other side, the diaphragm 30 will only deform slightly and will not completely twist or bend. Therefore, when the valve core 20 is rotated into place, the diaphragm 30 and the valve body 10 will not separate and cause leakage.

[0054] The diaphragm 30 is also provided with a positioning rib 34, which surrounds the skirt 32 and abuts the outer wall of the skirt 32. The radial thickness of the positioning rib 34 is less than the radial thickness of the skirt 32. This allows the portion of the skirt 32 that is thicker than the positioning rib 34 to extend into the guide hole 12 and abut the side wall of the partition 11. In some cases, the diaphragm 30, skirt 32, and positioning rib 34 are integrally injection molded.

[0055] The adjacent skirts 32 and positioning ribs 34 that enclose two adjacent flow channels 321 together form a limiting groove 35. The limiting groove 35 has an opening for inserting the partition 11. A plurality of serrations 36 are provided in the limiting groove 35, pointing toward the opening. The corresponding positioning ribs 34 are provided with grooves that cooperate with the serrations 36. The cooperation between the serrations 36 and the grooves increases the contact area between the diaphragm 30 and the valve body 10, thereby improving the stability of the connection between the two.

[0056] The diaphragm 30 includes an upper surface 37 and a lower surface 38 disposed opposite each other. A transition surface 311 is defined between the upper surface 37 and the flow hole 31. The transition surface 311 is inclined toward the flow hole 31. This design offers the advantage that, during rotation, the valve core 20 first contacts the transition surface 311 of the diaphragm 30 before abutting against the upper surface 37 of the diaphragm 30, resulting in smoother contact between the valve core 20 and the diaphragm 30. Furthermore, the transition surface 311 allows for more even distribution of fluid within the flow hole 31, preventing fluid separation caused by right-angled edges. The skirt 32 is provided on the lower surface 38 of the diaphragm 30.

[0057] The present application arranges a plurality of skirts 32 on the diaphragm 30, and each skirt 32 abuts against the side wall of the partition 11, thereby positioning the diaphragm 30 in the axial and radial directions of the partition 11. Therefore, the diaphragm 30 is not easily displaced, thereby improving the deformation resistance of the diaphragm 30 and ensuring the sealing between the diaphragm 30 and the valve body 10.

[0058] Combined with reference Figure 9 As shown, when the valve core 20 rotates to the transition state, the two left-side guide holes 12 change from connected to disconnected, and the pressure P1 rises, with P1 > P2. At this point, the diaphragm 30 tends to deform to the left, squeezing it leftward. This squeeze tightens the contact between the skirt 32 and the partition 11. Combined with the tension between the positive step 33 and the reverse step 111, the diaphragm 30 only deforms slightly, preventing complete twisting and flanging. Once the valve core 20 is fully rotated, no leakage occurs, ensuring more precise control in all modes.

[0059] Due to the high sealing stability between the diaphragm 30 and the valve body 10, the diaphragm 30 does not affect the size of the guide hole 12 in the valve body 10. Therefore, without affecting the flow area of the guide hole 12, the length of the diaphragm 30 can be increased and the width can be reduced, which can correspondingly minimize the outer diameter of the valve core 20. For example, by increasing the length of the valve core 20 and reducing its width, the outer diameter of the valve core 20 can be reduced, and the friction torque, product appearance, and manufacturing cost can also be reduced accordingly.

[0060] This embodiment also discloses a vehicle, comprising the multi-way valve described above.

[0061] It should be noted that the technical solutions or technical features described in the above embodiments can be combined or supplemented with each other without conflict. The scope of protection of this application is not limited to the precise structures described in the above embodiments and shown in the accompanying drawings; all modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of this application shall be included in the scope of protection of this application.

Claims

1. A multi-way valve, characterized in that: It includes a valve body, a valve core and a diaphragm; the valve body includes a plurality of partitions, which are arranged in an interlaced manner to form a plurality of guide holes; the valve core is rotatably arranged in the valve body; the diaphragm is installed between the valve body and the valve core; the diaphragm is provided with a plurality of flow holes, which correspond one-to-one to the guide holes, and the diaphragm is provided with a plurality of skirts extending toward the valve body, and each of the skirts abuts against the side wall of the partition.

2. The multi-way valve according to claim 1, characterized in that A positive step is provided at one end of the skirt away from the diaphragm, and the positive step is arranged on the outer side wall of the skirt. A reverse step cooperating with the positive step is provided on the side wall of the partition.

3. The multi-way valve according to claim 1, characterized in that Each of the skirts surrounds the circulation hole and forms a flow channel, and the inner wall of the flow channel is flush with the connection between the hole wall of the circulation hole.

4. The multi-way valve according to claim 3, characterized in that: The diaphragm is further provided with a positioning rib, which surrounds the skirt and abuts against the outer side wall of the skirt; the thickness of the positioning rib in the radial direction is smaller than the thickness of the skirt in the radial direction.

5. The multi-way valve according to claim 4, characterized in that The adjacent skirts surrounding the two adjacent flow channels and the positioning ribs together form a limiting groove, and the limiting groove has an opening for inserting the partition; and a plurality of saw teeth pointing to the opening are provided in the limiting groove.

6. The multi-way valve according to claim 3, characterized in that The diaphragm comprises an upper surface and a lower surface which are arranged opposite to each other. A transition surface is provided between the upper surface and the flow hole, and the transition surface is inclined toward the inside of the flow hole.

7. The multi-way valve according to claim 3, characterized in that: The inner radial direction of the flow channel increases gradually away from the side of the diaphragm.

8. The multi-way valve according to claim 1, wherein: The diaphragm includes a first film layer in contact with the valve body and a second film layer in contact with the valve core. The elastic coefficient of the first film layer is greater than that of the second film layer, and the friction coefficient of the first film layer is greater than that of the second film layer.

9. The multi-way valve according to claim 1, wherein: An accommodating groove is provided on the inner wall of the valve body, and the diaphragm is accommodated in the accommodating groove; the accommodating groove has a sealing surface, and the sealing surface is arranged in an arc shape along a direction perpendicular to the axial direction.

10. A vehicle, characterized in that: The multi-way valve comprises the multi-way valve according to any one of claims 1 to 9.

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