Multi-way valves and vehicles

Abstract

This application provides a multi-way valve and a vehicle. The multi-way valve includes a valve body, a valve core, and a diaphragm. The valve body includes several partitions arranged alternately to form several flow guide holes. The valve core is rotatably disposed within the valve body. The diaphragm is installed between the valve body and the valve core. The diaphragm has several flow holes, each corresponding to a flow guide hole. The diaphragm also has several skirts extending towards the valve body, each skirt abutting against the side wall of a partition. By arranging several skirts on the diaphragm, each skirt abutting against the side wall of a partition, this application positions the diaphragm axially and radially, thus preventing displacement of the diaphragm, improving its resistance to deformation, and ensuring the sealing between the diaphragm and the valve body.

Description

Technical Field

[0001] This application relates to the field of thermal management system technology, and more particularly to a multi-way valve and a vehicle. Background Technology

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

[0003] Because the valve body and valve core in a multi-way valve are both made of rigid materials, their fit is difficult to seal and prone to wear. Therefore, a diaphragm is usually placed between them. Generally, the diaphragm's resistance to deformation and its sealing ability are improved by adding a groove structure between the valve body and the diaphragm. However, because the simple sealing surface between the valve body and the diaphragm becomes a complex sealing surface of grooves, the resistance to deformation and the sealing ability between the diaphragm and the valve body are generally not good.

[0004] Therefore, it is necessary to design a multi-way valve and vehicle to solve the above-mentioned technical problems. Utility Model Content

[0005] This application provides a multi-way valve and vehicle that improves the diaphragm's resistance to deformation 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, including a valve body, a valve core, and a diaphragm; the valve body includes a plurality of partitions, the plurality of partitions being arranged alternately to form a plurality of flow guide holes; the valve core is rotatably disposed within 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, the flow holes corresponding one-to-one with the flow guide holes, and the diaphragm is provided with a plurality of skirts extending toward the valve body, each of the skirts abutting against the sidewall of the partition.

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

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

[0009] Furthermore, the diaphragm is also provided with positioning ribs, which surround the skirt and abut against the outer wall of the skirt; the radial thickness of the positioning ribs is less than the radial thickness of the skirt.

[0010] Furthermore, the adjacent skirts that form two adjacent flow channels together with the positioning ribs form a limiting groove, the limiting groove having an opening for the partition to be inserted; the limiting groove is provided with a plurality of serrations pointing to the opening.

[0011] Furthermore, the diaphragm includes an upper surface and a lower surface disposed opposite to each other, the upper surface having a transition surface with respect to the flow hole, and the transition surface being inclined toward the flow hole.

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

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

[0014] Furthermore, a receiving groove is formed on the inner wall of the valve body, and the diaphragm is housed in the receiving groove; the receiving 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 the embodiments of this specification, a vehicle is provided, including the multi-way valve described in the first aspect above.

[0016] This application has the following beneficial effects: By arranging several skirts on the diaphragm, each skirt abutting against the side wall of the partition, the partition positions the diaphragm in the axial and radial directions. Therefore, the diaphragm is not easy to shift, which improves the diaphragm's resistance to deformation and ensures the sealing between the diaphragm and the valve body.

[0017] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this specification. Attached Figure Description

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

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

[0020] Figure 2 yes Figure 1 Assembly diagram;

[0021] Figure 3 This is a schematic diagram of the valve body of this application;

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

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

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

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

[0026] Figure 8 yes Figure 5 Axial sectional view;

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

[0028] Figure 10 yes Figure 9 A partial sectional view;

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

[0030] Figure 12 This is a schematic diagram of the diaphragm structure in another embodiment of this application;

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

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

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

[0034] Explanation of reference numerals in the attached figures:

[0035] 10-Valve body; 11-Baffle plate; 111-Reverse step; 12-Guide hole; 13-Receiving groove; 131-Sealing surface;

[0036] 20-Valve core;

[0037] 30-Diaphragm; 31-Flow hole; 311-Transition surface; 32-Skirt; 321-Flow channel; 33-Positive step; 34-Positioning rib; 35-Limiting groove; 36-Serpentine; 37-Upper surface; 38-Lower surface;

[0038] 40 - Actuator; 41 - Sealing ring;

[0039] 50 - Valve cover; 51 - Shaft sleeve;

[0040] 60 - Sealing gasket. Detailed Implementation

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

[0042] If the embodiments of this application contain terms relating to directional indications or positional relationships (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 relationships and movements between components in a specific posture (as shown in the attached figures); if the specific posture changes, the directional indications or positional relationships will also change accordingly. Furthermore, the terms "first" and "second" used in the embodiments of this application are only for descriptive convenience and should not be construed as indicating or implying relative importance.

[0043] The embodiments described in this specification will now be described in detail.

[0044] Reference Figure 1-2 As shown, this 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 in shape and rotatably disposed within the valve body 10. The diaphragm 30 is installed between the valve body 10 and the valve core 20. The actuator 40 is disposed at one end of the valve body 10 via 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 achieve switching between different flow channels. The valve cover 50 is covered at the other end of the valve body 10 via a bushing 51. The sealing gasket 60 is fixed at the outlet of the valve body 10.

[0045] Please refer to the following at the same time Figure 3-4 As shown, a cavity is formed inside the valve body 10, and the valve core 20 is located inside the cavity. The valve body 10 includes several partitions 11, which are arranged alternately to form several guide holes 12. The guide holes 12 connect the outside of the valve body 10 with the valve core 20. When the multi-way valve is working, the valve core 20 rotates relative to the valve body 10. By cooperating with different guide holes 12, it achieves the switching of different flow channels, thereby forming different liquid channels.

[0046] A receiving groove 13 is formed on the inner wall of the valve body 10, and the diaphragm 30 is housed in the receiving groove 13. The receiving groove 13 has a sealing surface 131, which is arc-shaped in a direction perpendicular to the axial direction, so that the diaphragm 30 fits against the cylindrical curved surface of the valve core 20, thereby achieving a seal between the valve body 10 and the valve core 20. The arrangement of the receiving groove 13 facilitates the fixation of the diaphragm 30 and effectively prevents the diaphragm 30 from rotating with the valve core 20. In some cases, the diaphragm 30 can also be arranged around the periphery of the valve core 20.

[0047] The diaphragm 30 includes a first diaphragm layer (not shown) that contacts the valve body 10 and a second diaphragm layer (not shown) that contacts the valve core 20. The two diaphragm layers are fixed together by adhesive bonding. The elastic modulus of the first diaphragm layer is greater than that of the second diaphragm layer, and the coefficient of friction of the first diaphragm layer is also greater than that of the second diaphragm layer. This reduces the frictional torque when the valve core 20 rotates. In some cases, the first diaphragm layer is made of rubber, and the second diaphragm layer is made of PTFE.

[0048] Please refer to the following at the same time Figure 5-8 As shown, the diaphragm 30 is provided with a number of flow holes 31, which correspond one-to-one with the guide holes 12, thereby forming multiple liquid channels that communicate with the valve body 10 to satisfy the conduction of different circuits.

[0049] The diaphragm 30 is provided with several 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 on the side away from the diaphragm 30. The gradually expanding design can avoid flow separation and eddies 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 plate 11, that is, the skirt 32 extends into the guide hole 12 and fits against the wall of the guide hole 12, so that the diaphragm 30 is positioned simultaneously in the axial and radial directions.

[0051] In other cases, the skirt 32 may partially surround the flow hole 31 without forming a flow channel 321, and thus only fit against a portion of the hole wall of the guide hole 12. Or in other cases, the skirt 32 surrounds a portion of the flow hole 31 and forms a flow channel 321. The specific structure and number of the skirt 32 extensions are not limited here, as long as it is ensured that the skirt 32 abuts against the side wall of the partition 11.

[0052] In another embodiment, please refer to the reference. Figure 9-15As shown, the end of the skirt 32 furthest from the diaphragm 30 is also provided with a forward step 33, which acts as a barb. The forward step 33 is arranged on the outer side wall of the skirt 32. The side wall of the partition 11 is provided with a reverse step 111 that cooperates with the forward step 33. In this way, the forward step 33 and the reverse step 111 cooperate together to form the effect of two barbs hooking each other, which improves the stability of the connection between the diaphragm 30 and the valve body 10.

[0053] After the forward step 33 and the reverse step 111 are properly engaged, when the diaphragm 30 is subjected to differential pressure 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 forward step 33 and the reverse step 111 on the other side of the skirt 32, the diaphragm 30 can only undergo slight deformation and will not completely twist or flip. Therefore, when the valve core 20 is rotated to its position, the diaphragm 30 and the valve body 10 will not separate and leak.

[0054] The diaphragm 30 is also provided with positioning ribs 34, which surround the skirt 32 and abut against the outer wall of the skirt 32. The radial thickness of the positioning ribs 34 is less than the radial thickness of the skirt 32, so that the portion of the skirt 32 that is thicker than the positioning ribs 34 can penetrate into the guide hole 12 and abut against the side wall of the partition 11. In some cases, the diaphragm 30, the skirt 32, and the positioning ribs 34 are integrally injection molded.

[0055] The adjacent skirts 32 that form two adjacent flow channels 321 together with the positioning ribs 34 form a limiting groove 35. The limiting groove 35 has an opening for the insertion of the partition plate 11. The limiting groove 35 is provided with a plurality of serrations 36 pointing towards the opening. Correspondingly, the 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 to each other. A transition surface 311 exists between the upper surface 37 and the flow hole 31, and the transition surface 311 is inclined inwards towards the flow hole 31. This design has the advantage that, on the one hand, during valve core 20 rotation, it can first contact the transition surface 311 of the diaphragm 30 before abutting against the upper surface 37 of the diaphragm 30, making the contact between the valve core 20 and the diaphragm 30 smoother. On the other hand, the transition surface 311 allows the fluid to be distributed more evenly into the flow hole 31, avoiding fluid separation caused by right-angled edges. A skirt 32 is disposed on the lower surface 38 of the diaphragm 30.

[0057] This application arranges several skirts 32 on the diaphragm 30, with each skirt 32 abutting against the side wall of the partition 11, thereby positioning the diaphragm 30 in the axial and radial directions by the partition 11. Therefore, the diaphragm 30 is not easy to shift, which improves the deformation resistance of the diaphragm 30 and ensures 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 guide holes 12 on the left change from a connected state to a disconnected state, and the pressure P1 rises, P1 > P2. At this time, the diaphragm 30 tends to deform to the left, which will squeeze the diaphragm 30 to the left. At the same time, the compression will make the contact between the skirt 32 and the partition 11 tighter. Combined with the tension between the positive step 33 and the reverse step 111, the diaphragm 30 can only undergo slight deformation and will not be completely twisted or flipped. When the valve core 20 rotates to the correct position, there will be no leakage, and the control in each mode will be more precise.

[0059] Because of 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 on 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 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 shape, and manufacturing cost can also be reduced accordingly.

[0060] This embodiment also discloses a vehicle including the aforementioned multi-way valve.

[0061] It should be noted that the technical solutions or 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 should be included within the scope of protection of this application.

Claims

1. A multi-way valve, characterized in that, The valve includes a valve body, a valve core, and a diaphragm. The valve body includes several partitions arranged alternately to form several flow guide holes. The valve core is rotatably disposed within the valve body. The diaphragm is installed between the valve body and the valve core. The diaphragm has several flow holes, each corresponding to one of the flow guide holes. The diaphragm also has several skirts extending toward the valve body, each skirt abutting against the side wall of a partition.

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

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

4. The multi-way valve according to claim 3, characterized in that, The diaphragm is also provided with positioning ribs, which surround the skirt and abut against the outer wall of the skirt; the radial thickness of the positioning ribs is less than the radial thickness of the skirt.

5. The multi-way valve according to claim 4, characterized in that, The adjacent skirts that form two adjacent flow channels together with the positioning ribs form a limiting groove, the limiting groove having an opening for the partition to be inserted; the limiting groove is provided with a plurality of serrations pointing to the opening.

6. The multi-way valve according to claim 3, characterized in that, The diaphragm includes an upper surface and a lower surface disposed opposite to each other, and the upper surface has a transition surface with respect to the flow hole, the transition surface being inclined towards the flow hole.

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

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

9. The multi-way valve according to claim 1, characterized in that, The valve body has a receiving groove on its inner wall, and the diaphragm is housed in the receiving groove; the receiving groove has a sealing surface, and the sealing surface is arc-shaped in a direction perpendicular to the axial direction.

10. A vehicle, characterized in that, The multi-way valve includes any one of claims 1-9.

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