Multi-way valve and valve integration device

Abstract

The utility model relates to the technical field of valves, and particularly discloses a multi-way valve and a valve integration device. The multi-way valve comprises a valve body, and a plurality of valve body runners are arranged in the valve body. The valve element assembly is rotatably arranged in the valve body; the valve element assembly comprises a valve disc, a valve disc upper cover and a valve disc top cover which are sequentially arranged from bottom to top, a plurality of openings corresponding to the valve body flow channels are formed in the valve disc, at least two valve element flow channels are formed in the valve element assembly, and each valve element flow channel is communicated with two openings. The valve element flow channel comprises a first valve element flow channel defined by the valve disc and the valve disc upper cover and a second valve element flow channel defined by the valve disc upper cover and the valve disc top cover, and at least part of the second valve element flow channel is located above the first valve element flow channel and strides over the first valve element flow channel. According to the multi-way valve and the valve integration device, the multi-way valve and the valve integration device have more complex channel modes to meet various communication requirements, and meanwhile the self-structure can be kept compact.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a multi-way valve and a valve integration device. Background Art

[0002] The thermal management system is an important part of new energy vehicles. It realizes heat exchange through fluids (such as coolant), and finally makes each functional area within the target temperature range, so as to ensure the normal operation of the vehicle.

[0003] The multi-way valve and the valve integration device are important components in the thermal management system. The existing multi-way valves on the market have an insufficiently compact structure and cannot achieve complex connection relationships. With the increasing diversification and complexity of the thermal management system, the existing multi-way valves can no longer meet the requirements. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a multi-way valve and a valve integration device that can achieve more complex connection relationships while maintaining a compact structure.

[0005] To achieve the above purpose, the utility model provides a multi-way valve, including:

[0006] A valve body, in which a plurality of valve body flow channels are provided;

[0007] A valve core assembly, which is rotatably arranged in the valve body;

[0008] A valve cover, which is arranged on the side of the valve core assembly away from the valve body and closes the valve body opening formed by accommodating the valve core assembly;

[0009] The valve core assembly includes a valve disc, a valve disc upper cover and a valve disc top cover arranged in sequence from bottom to top. A plurality of openings corresponding to the plurality of valve body flow channels are provided on the valve disc. At least two valve core flow channels are formed in the valve core assembly, and each valve core flow channel communicates with two of the openings. The valve core flow channels include a first valve core flow channel formed by enclosing the valve disc and the valve disc upper cover, and a second valve core flow channel formed by enclosing the valve disc upper cover and the valve disc top cover. At least part of the second valve core flow channel is located above the first valve core flow channel and straddles the first valve core flow channel.

[0010] As a further improvement of the present utility model, the second spool flow channel includes a chamber formed on the upper cover of the valve disc and extending in the radial direction of the spool assembly, a first channel and a second channel formed on the upper cover of the valve disc and respectively communicating the chamber with the two openings. The first channel and the second channel extend in the up-and-down direction. The chamber is located above the first spool flow channel and straddles the first spool flow channel. The top cover of the valve disc is connected to the upper cover of the valve disc and covers the chamber.

[0011] As a further improvement of the present utility model, the upper cover of the valve disc includes a chamber bottom wall located below the chamber, a first guiding surface extending from one end of the chamber bottom wall towards the first channel and inclined downward, and a second guiding surface extending from the other end of the chamber bottom wall towards the second channel and inclined downward.

[0012] As a further improvement of the present utility model, the upper cover of the valve disc includes a first protruding portion protruding from its peripheral wall into the second spool flow channel, and a first guiding rib located in the second spool flow channel. The first guiding rib connects the first protruding portion and the peripheral wall of the upper cover of the valve disc and forms a smoothly transitioning structure between the first protruding portion and the peripheral wall of the upper cover of the valve disc.

[0013] A first notch is formed around the side of the first protruding portion facing away from the second spool flow channel, and the valve disc includes a clamping block clamped in the first notch.

[0014] As a further improvement of the present utility model, the valve disc and the upper cover of the valve disc further enclose a third spool flow channel communicating the two openings. The first spool flow channel, the second spool flow channel and the third spool flow channel are not connected to each other.

[0015] As a further improvement of the present utility model, the valve body includes a pressure equalizing chamber formed above the spool assembly. The spool assembly further includes a pressure relief structure provided between each spool flow channel and the pressure equalizing chamber. The pressure relief structure is configured to allow the fluid in the spool flow channel to flow unidirectionally into the pressure equalizing chamber when the difference between the pressure of the fluid in the spool flow channel and the pressure of the fluid in the pressure equalizing chamber is greater than a preset value.

[0016] As a further improvement of the present utility model, the pressure relief structure includes a pressure relief hole formed on the spool assembly and communicating the pressure equalizing chamber with the spool flow channel, a connecting rod connected to the spool assembly, and a flexible portion located in the pressure equalizing chamber and connected to the connecting rod. The flexible portion includes a first posture covering the upper end of the pressure relief hole when the difference is not greater than the preset value, and a second posture tilting upward from the first posture when the difference is greater than the preset value, so that the spool flow channel and the pressure equalizing chamber are communicated through the pressure relief hole.

[0017] As a further improvement of the present utility model, the two openings communicated with the first spool flow channel are a first opening and a second opening, the two openings communicated with the second spool flow channel are a third opening and a fourth opening, the two openings communicated with the third spool flow channel are a fifth opening and a sixth opening. Along the circumferential direction of the valve disc, the first opening, the third opening, the second opening, the fifth opening, the sixth opening, and the fourth opening are arranged in sequence.

[0018] As a further improvement of the present utility model, the valve disc includes a guide post located at its center and extending in the up and down directions. An opening for inserting the guide post is formed on the upper cover of the valve disc. At least part of the guide post is located in the middle of the first spool flow channel. The valve disc further includes a diversion structure located in the middle of the first spool flow channel. The diversion structure extends from the guide post towards the opening communicated with the first spool flow channel. Along the extension direction of the diversion structure, the width of the diversion structure shows a gradually decreasing trend.

[0019] The present utility model further provides a valve integrated device, which includes the multi-way valve and a manifold described above. The manifold is provided with manifold flow channels corresponding to the valve body flow channels one by one.

[0020] Beneficial effects

[0021] In the multi-way valve and the valve integrated device provided by the present utility model, at least two spool flow channels such as a first spool flow channel and a second spool flow channel are provided, and at least part of the second spool flow channel is located above the first spool flow channel and is arranged across the first spool flow channel, so that at least part of the second spool flow channel and the first spool flow channel overlap in the up and down directions. In this way, the size of the spool assembly in the up and down directions is effectively utilized, and the utilization rate of the internal space of the spool assembly is improved. While the multi-way valve has at least two spool flow channels to meet various connection requirements, its own structure can still remain compact. Description of the drawings

[0022] Figure 1 is a schematic structural diagram of a multi-way valve provided by an embodiment of the present utility model;

[0023] Figure 2 is Figure 1 the internal sectional view of the multi-way valve in

[0024] Figure 3 is Figure 2 the schematic structural diagram of the upper cover of the valve disc in

[0025] Figure 4 is Figure 2 another schematic structural diagram of the upper cover of the valve disc in

[0026] Figure 5 is Figure 2Top view of the valve disc in

[0027] Figure 6 is Figure 2 Schematic structural diagram of the valve disc top cover in

[0028] Figure 7 is Figure 1 Exploded schematic diagram of the multi-way valve in

[0029] Figure 8 is Figure 2 Cross-sectional schematic diagram of the valve disc assembly and pressure relief structure of the multi-way valve in , where the flexible part is in the first posture;

[0030] Figure 9 is Figure 2 Another cross-sectional schematic diagram of the valve disc assembly and pressure relief structure of the multi-way valve in , where the flexible part is in the first posture;

[0031] Figure 10 is Figure 2 Structural diagram of the valve disc in

[0032] In the figure:

[0033] 10. Multi-way valve;

[0034] 1. Valve body; 11. Pressure equalizing chamber; 12. Valve cover;

[0035] 2. Spool assembly; 21. Spool flow channel; 211. First spool flow channel; 212. Second spool flow channel; 2121. Chamber; 2122. First channel; 2123. Second channel; 213. Third spool flow channel;

[0036] 3. Valve disc; 31. Opening; 311. First opening; 312. Second opening; 313. Third opening; 314. Fourth opening; 315. Fifth opening; 316. Sixth opening; 32. Block; 33. Guide post; 34. Flow guiding structure; 35. First gear part;

[0037] 4. Valve disc upper cover; 41. Chamber bottom wall; 42. First guiding surface; 43. Second guiding surface; 44. First protruding part; 45. First flow guiding rib; 46. First notch; 47. Opening;

[0038] 5. Valve disc top cover; 51. Second protruding part; 52. Second notch; 53. Second flow guiding rib;

[0039] 6. Pressure relief structure; 61. Pressure relief hole; 62. Connecting rod; 63. Flexible part;

[0040] 7. Driving part; 71. Second gear part.

[0041] 8. Sealing gasket. Detailed implementation mode

[0042] The following will describe the present utility model in detail in conjunction with the embodiments shown in the accompanying drawings. However, these embodiments do not limit the present utility model, and any structural, method, or functional changes made by those of ordinary skill in the art based on these embodiments are included within the protection scope of the present utility model.

[0043] Spatial relative position terms used herein, such as "upper", "lower", "left", "right", "front", "rear", etc., are for the purpose of facilitating description of the relationship of one feature relative to another feature as shown in the accompanying drawings. It can be understood that depending on the placement position of the product, the spatial relative position terms may be intended to include different orientations other than those shown in the figures, and should not be construed as a limitation on the claims. In addition, the descriptive term "horizontal" used herein is not completely equivalent to being perpendicular to the direction of gravity, and a certain degree of inclination is allowed.

[0044] An embodiment of the present utility model provides a valve integration device, which can be used in the thermal management system of new energy vehicles or other equipment.

[0045] The valve integration device includes a multi-way valve 10 and a manifold. As Figure 1-7 shown, the multi-way valve 10 includes a valve body 1, a valve core assembly 2, and a valve cover 12. A plurality of valve body flow channels are provided in the valve body 1, and manifold flow channels corresponding to the valve body flow channels one by one are provided on the manifold. Fluids (such as coolant) in the thermal management system can flow into the corresponding valve body flow channels through the manifold flow channels, and the fluids in the valve body flow channels can flow out of the valve integration device through the manifold flow channels.

[0046] The valve core assembly 2 is rotatably arranged in the valve body 1, and it can be switched among multiple positions. The valve cover 12 is arranged on the side of the valve core assembly 2 away from the valve body 1 and closes the valve body opening formed by accommodating the valve core assembly 2 in the valve body 1.

[0047] Specifically, the valve core assembly 2 includes a valve disc 3, a valve disc upper cover 4, and a valve disc top cover 5 arranged in sequence from bottom to top. A plurality of openings 31 corresponding to the plurality of valve body flow channels are provided on the valve disc 3. At least two valve core flow channels 21 are formed in the valve core assembly 2, and each valve core flow channel 21 communicates with two openings 31. The valve core flow channels 21 include a first valve core flow channel 211 and a second valve core flow channel 212. Among them, the first valve core flow channel 211 is formed by enclosing the valve disc 3 and the valve disc upper cover 4, and the second valve core flow channel 212 is formed by enclosing the valve disc upper cover 4 and the valve disc top cover 5.

[0048] Let the two openings 31 communicating with the first spool flow channel 211 be the first opening 311 and the second opening 312, and the two openings 31 communicating with the second spool flow channel 212 be the third opening 313 and the fourth opening 314. When the multi-way valve 10 is in use, the fluid in the valve body flow channel corresponding to the first opening 311 can flow through the first spool flow channel 211 to the valve body flow channel corresponding to the second opening 312; the fluid in the valve body flow channel corresponding to the third opening 313 can flow through the second spool flow channel 212 to the valve body flow channel corresponding to the fourth opening 314. By rotating the spool assembly 2, the corresponding relationship between the multiple openings 31 and the multiple valve body flow channels will change. In this way, the specific flow path of the fluid can be controlled as needed.

[0049] In the existing multi-way valve, the projections of the multiple spool flow channels of its spool assembly on a plane perpendicular to the up-and-down direction do not intersect, and the spool flow channels do not overlap in the up-and-down direction. The size of the spool assembly in the up-and-down direction cannot be effectively utilized. When multiple spool flow channels need to be provided, only the radial size of the spool assembly can be increased, and the space inside the spool assembly cannot be effectively utilized.

[0050] In this embodiment, at least two spool flow channels 21 such as the first spool flow channel 211 and the second spool flow channel 212 are provided, and at least a part of the second spool flow channel 212 is located above the first spool flow channel 211 and is arranged across the first spool flow channel 211. That is, the first spool flow channel 211 and the second spool flow channel 212 are cross-shaped in the up-and-down direction, and at least part of them overlap in the up-and-down direction. In this way, the size of the spool assembly 2 in the up-and-down direction is effectively utilized, and the utilization rate of the space inside the spool assembly 2 is improved. While the multi-way valve 10 has at least two spool flow channels 32 to meet various connection requirements, its own structure can still remain compact.

[0051] Specifically, the second spool flow channel 212 includes a chamber 2121 formed on the valve disc upper cover 4 and extending in the radial direction of the spool assembly 2, and a first channel 2122 and a second channel 2123 formed on the valve disc upper cover 4 and respectively communicating with the chamber 2121 and the two openings 31. It can be imagined that the two openings 31 here are the above-mentioned third opening 313 and fourth opening 314. The first channel 2122 and the second channel 2123 extend in the up-and-down direction, the chamber 2121 is located above the first spool flow channel 211 and is arranged across the first spool flow channel 211, the first channel 2122 and the second channel 2123 are located on different sides of the first spool flow channel 211, and the valve disc top cover 5 is connected to the valve disc upper cover 4 and covers the chamber 2121 to close the chamber 2121.

[0052] The valve disc top cover 5 is arranged flush with the valve disc 3 in the up and down direction, that is, the valve disc top cover 5 does not increase the overall height of the valve core assembly 2. In this way, the structure of the valve core assembly 2 can be kept compact. The overall height of the valve core assembly 2 is the dimension occupied by the valve core assembly 2 in the up and down direction.

[0053] The valve disc upper cover 4 includes a chamber bottom wall 41 located below the chamber 2121, a first guiding surface 42 extending from one end of the chamber bottom wall 41 towards the first channel 2122 and sloping downwards, and a second guiding surface 43 extending from the other end of the chamber bottom wall 41 towards the second channel 2123 and sloping downwards. The first guiding surface 42 and the second guiding surface 43 play a guiding role to facilitate the inflow of fluid from the first channel 2122 into the chamber 2121 and the inflow from the chamber 2121 into the second channel 2123.

[0054] The valve disc upper cover 4 includes a first protrusion 44 protruding from its peripheral wall into the second valve core flow channel 212 and a first flow guiding rib 45 located in the second valve core flow channel 212. The first flow guiding rib 45 connects the first protrusion 44 and the peripheral wall of the valve disc upper cover 4 and forms a smoothly transitional structure between the first protrusion 44 and the peripheral wall of the valve disc upper cover 4. The first flow guiding rib 45 may specifically be in an arc shape.

[0055] A first notch 46 is formed by surrounding the side of the first protrusion 44 facing away from the second valve core flow channel 212. A clamping block 32 is provided on the valve disc 3, and the clamping block 32 is clamped in the first notch 46 to prevent the valve disc upper cover 4 from rotating relative to the valve disc 3. The first protrusion 44 extends into the second valve core flow channel 212, which will affect the flow of fluid in the second valve core flow channel 212. In this regard, the above-mentioned first flow guiding rib 45 forms a smoothly transitional structure between the first protrusion 44 and the peripheral wall of the valve disc upper cover 4, which can ensure the smooth flow of fluid in the second valve core flow channel 212.

[0056] The valve disc top cover 5 is provided with a second protrusion 51 corresponding to the first protrusion 44 and a second notch 52 corresponding to the first notch 46. The second protrusion 51 protrudes from the peripheral wall of the valve disc top cover 5 into the second valve core flow channel 212. A second notch 52 is formed by surrounding the side of the second protrusion 51 facing away from the second valve core flow channel 212. The above-mentioned clamping block 32 is also clamped in the second notch 52 to limit the position of the valve disc top cover 5 relative to the valve disc 3. The valve disc top cover 5 is further provided with a second flow guiding rib 53 corresponding to the first flow guiding rib 45. The second flow guiding rib 53 is located in the second valve core flow channel 212 and connects the second protrusion 51 and the peripheral wall of the valve disc upper cover 4, and forms a smoothly transitional structure between the second protrusion 51 and the peripheral wall of the valve disc top cover 5. The function of the second flow guiding rib 53 is the same as that of the above-mentioned first flow guiding rib 45, which is also to enable the fluid to flow smoothly in the second valve core flow channel 212.

[0057] In the spool assembly 2 of the multi-way valve 10 provided in this embodiment, in addition to the above-mentioned first spool flow channel 211 and second spool flow channel 212, a third spool flow channel 213 that communicates with the two openings 31 is further formed by enclosing the valve disc 3 and the valve disc upper cover 4 to meet more connection requirements. Here, the two openings 31 are the fifth opening 315 and the sixth opening 316. The first spool flow channel 211, the second spool flow channel 212, and the third spool flow channel 213 are not connected to each other.

[0058] It can be seen that in this embodiment, the spool assembly 2 includes three layers of structures: the valve disc 3, the valve disc upper cover 4, and the valve disc top cover 5, and two spool flow channels 21, namely the intersecting first spool flow channel 211 and second spool flow channel 212, are formed. Among them, the valve disc 3 and the valve disc upper cover 4 can be connected together by welding, and the valve disc upper cover 4 and the valve disc top cover 5 can also be connected together by welding.

[0059] In other embodiments, the spool assembly 2 is not limited to the above three-layer structure including the valve disc 3, the valve disc upper cover 4, and the valve disc top cover 5, and can also be four layers, five layers or even more. The intersecting spool flow channels 21 formed in the spool assembly 2 can also be three, four or even more. The valve disc 3 and the valve disc upper cover 4, and the valve disc upper cover 4 and the valve disc top cover 5 can also be connected by other connection methods (such as rivet connection, adhesive connection, etc.).

[0060] In this embodiment, the multiple openings 31 are specifically located at the lower end of the spool assembly 2. The multi-way valve 10 further includes a gasket 8 provided between the spool assembly 2 and the valve body 1. The gasket 8 is located below the spool assembly 2, and a communication port that communicates with the corresponding valve body flow channel and the opening 31 is formed thereon. The gasket 8 can be specifically made of a flexible material. When the fluid flows from the valve body flow channel into the spool flow channel 21 through the opening 31, or flows from the spool flow channel 21 into the valve body flow channel through the opening 31, the gasket 8 can prevent the fluid from leaking.

[0061] As Figure 2-4 shown in FIGS. 6-9, the valve body 1 further includes a pressure equalizing chamber 11 formed above the spool assembly 2. The spool assembly 2 further includes a pressure relief structure 6 provided between each spool flow channel 21 and the pressure equalizing chamber 11. The pressure relief structure 6 is configured to allow the fluid in the spool flow channel 21 to flow unidirectionally into the pressure equalizing chamber 11 when the difference between the pressure of the fluid in the spool flow channel 21 and the pressure of the fluid in the pressure equalizing chamber 11 is greater than a preset value. In this way, the pressure of the fluid in the spool flow channel 21 and the pressure of the fluid in the pressure equalizing chamber 11 can reach equilibrium. Under the action of the pressure of the fluid in the pressure equalizing chamber 11, the spool assembly 2 can tightly press the gasket 8, effectively preventing fluid leakage. The difference between the pressure of the fluid in the spool flow channel 21 and the pressure of the fluid in the pressure equalizing chamber 11 should be understood as the pressure value of the fluid in the spool flow channel 21 minus the pressure value of the fluid in the pressure equalizing chamber 11.

[0062] Specifically, the pressure relief structure 6 includes a pressure relief hole 61 formed in the valve core assembly 2 and communicating the pressure equalizing chamber 11 and the valve core flow passage 21, a connecting rod 62 connected to the valve core assembly 2, and a flexible part 63 located in the pressure equalizing chamber 11 and connected to the connecting rod 62. The flexible part 63 can be specifically made of materials such as silica gel and rubber.

[0063] The flexible part 63 has a first posture and a second posture. When the above difference is not greater than a preset value, the flexible part 63 covers the upper end of the pressure relief hole 61 to be in the first posture (as Figure 8 shown). When the above difference is greater than the preset value, under the action of the pressure of the fluid in the valve core flow passage 21, the flexible part 63 will tilt upward and change from the first posture to the second posture (as Figure 9 shown). When the flexible part 63 is in the first posture, the valve core flow passage 21 and the pressure equalizing chamber 11 cannot communicate through the pressure relief hole 61. When the flexible part 63 is in the second posture, the valve core flow passage 21 and the pressure equalizing chamber 11 can communicate through the pressure relief hole 61. It can be seen that the design of the flexible part 63 makes the difference between the pressure of the fluid in the valve core flow passage 21 and the pressure of the fluid in the pressure equalizing chamber 11 not exceed the preset value.

[0064] In each pressure relief structure 6, a plurality of pressure relief holes 61 can be provided, and the plurality of pressure relief holes 61 are arranged around the connecting rod 62. In this embodiment, the valve core assembly 2 is provided with a total of three valve core flow passages 21, namely a first valve core flow passage 211, a second valve core flow passage 212, and a third valve core flow passage 213. Correspondingly, three groups of the above pressure relief holes 61 are also provided, and each group includes a plurality of pressure relief holes 61. Specifically, the plurality of pressure relief holes 61 communicating the first valve core flow passage 211 and the pressure equalizing chamber 11 are formed in the valve disc upper cover 4, the plurality of pressure relief holes 61 communicating the second valve core flow passage 212 and the pressure equalizing chamber 11 are formed in the valve disc top cover 5, and the plurality of pressure relief holes 61 communicating the third valve core flow passage 213 and the pressure equalizing chamber 11 are formed in the valve disc upper cover 4. Three flexible parts 63 are also provided, two of the flexible parts 63 are connected to the valve disc upper cover 4 through the connecting rod 62, and one flexible part 63 is connected to the valve disc upper cover 4 through the connecting rod 62.

[0065] As Figure 2-7 shown in FIGS. 9 and 10, in this embodiment, along the circumferential direction of the valve disc 3, the first opening 311, the third opening 313, the second opening 312, the fifth opening 315, the sixth opening 316, and the fourth opening 314 are arranged in sequence. To connect the first opening 311 and the second opening 312, the first valve core flow passage 211 is generally semi-circular; to connect the third opening 313 and the fourth opening 314, the second valve core flow passage 212 straddles the first valve core flow passage 211, and its chamber 2121 is generally fan-shaped, and the valve disc top cover 5 for closing the chamber 2121 is also generally fan-shaped; to connect the fifth opening 315 and the sixth opening 316, the third valve core flow passage 213 is generally fan-shaped.

[0066] In other embodiments, the arrangement of the openings 31 may also adopt other forms, and the shape of the valve core flow channel 21 may be adaptively changed according to the positions of the two openings 31 to be connected thereto.

[0067] In this embodiment, the valve disc 3 includes a guide post 33 located at its center and extending in the up and down directions. An opening 47 for inserting the guide post 33 is formed on the upper cover 4 of the valve disc. When the guide post 33 is inserted into the opening 47, the axes of the valve disc 3 and the upper cover 4 of the valve disc can be kept coincident.

[0068] At least a part of the guide post 33 is located in the middle of the first valve core flow channel 211. During the process of the fluid flowing from the first opening 311 to the second opening 312, it is necessary to flow through a part of the guide post 33 located in the middle of the first valve core flow channel 211, and the guide post 33 will hinder the flow of the fluid in the first valve core flow channel 211. In this regard, the valve disc 3 further includes a diversion structure 34 located in the middle of the first valve core flow channel 211. The diversion structure 34 extends from the guide post 33 towards the opening 31 communicating with the first valve core flow channel 211. Along the extending direction of the diversion structure 34, the width of the diversion structure 34 shows a gradually decreasing trend. Under the action of the diversion structure 34, the fluid can smoothly flow from the first opening 311 to the second opening 312 in the first valve core flow channel 211.

[0069] It can be understood that in some embodiments, two diversion structures 34 can be arranged in the first valve core flow channel 211. The two diversion structures 34 are located on both sides of the guide post 33 and respectively correspond to the two openings 31. The specific shape of the diversion structure 34 is as described above and will not be elaborated here.

[0070] In this embodiment, a first gear portion 35 is provided on the outer periphery of the valve disc 3. The multi-way valve 10 further includes a driving member 7 rotatably connected to the valve body 1. A second gear portion 71 meshing with the first gear portion 35 is provided on the outer periphery of the driving member 7. When it is necessary to change the corresponding relationship between the multiple openings 31 and the multiple valve body flow channels, the driving member 7 can be manually rotated. When the driving member 7 rotates, the second gear portion 71 drives the first gear portion 35 to rotate, and the entire valve core assembly 2 will also rotate to change its position.

[0071] It should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0072] The above embodiments are only used to illustrate the technical solutions of the present application and not to limit them. Although the present application has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present application can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present application.

Claims

1. A multi-way valve, comprising: A valve body (1) provided with a plurality of valve body flow channels therein; A valve core assembly (2) rotatably disposed within the valve body (1); A valve cover (12) disposed on a side of the valve core assembly (2) away from the valve body (1) and closing a valve body opening formed by accommodating the valve core assembly (2) in the valve body (1), characterized in that: The valve core assembly (2) includes a valve disc (3), a valve disc upper cover (4), and a valve disc top cover (5) sequentially arranged from bottom to top. The valve disc (3) is provided with a plurality of openings (31) corresponding to the plurality of valve body flow channels. At least two valve core flow channels (21) are formed within the valve core assembly (2), and each valve core flow channel (21) communicates with two of the openings (31). The valve core flow channels (21) include a first valve core flow channel (211) formed by surrounding the valve disc (3) and the valve disc upper cover (4), and a second valve core flow channel (212) formed by surrounding the valve disc upper cover (4) and the valve disc top cover (5). At least a part of the second valve core flow channel (212) is located above the first valve core flow channel (211) and is arranged across the first valve core flow channel (211).

2. The multi-way valve according to claim 1, wherein The second valve core flow channel (212) includes a chamber (2121) formed in the valve disc upper cover (4) and extending in the radial direction of the valve core assembly (2), a first channel (2122) and a second channel (2123) formed in the valve disc upper cover (4) and respectively communicating the chamber (2121) with two of the openings (31). The first channel (2122) and the second channel (2123) extend in the vertical direction. The chamber (2121) is located above the first valve core flow channel (211) and is arranged across the first valve core flow channel (211). The valve disc top cover (5) is connected to the valve disc upper cover (4) and covers the chamber (2121).

3. The multi-way valve according to claim 2, characterized in that, The valve disc upper cover (4) includes a chamber bottom wall (41) located below the chamber (2121), a first guiding surface (42) extending from one end of the chamber bottom wall (41) towards the first channel (2122) and inclined downward, and a second guiding surface (43) extending from the other end of the chamber bottom wall (41) towards the second channel (2123) and inclined downward.

4. The multi-way valve according to claim 3, characterized in that, The valve disc upper cover (4) includes a first protruding portion (44) protruding from its peripheral wall into the second valve core flow channel (212), and a first flow guiding rib (45) located within the second valve core flow channel (212). The first flow guiding rib (45) connects the first protruding portion (44) and the peripheral wall of the valve disc upper cover (4) and forms a smoothly transitioning structure between the first protruding portion (44) and the peripheral wall of the valve disc upper cover (4). A first notch (46) is formed by surrounding the side of the first protruding portion (44) facing away from the second valve core flow channel (212). The valve disc (3) includes a clamping block (32) clamped within the first notch (46).

5. The multi-way valve according to claim 1, wherein The valve disc (3) and the valve disc upper cover (4) are also surrounded by a third valve core flow channel (213) that is connected to the two openings (31); the first valve core flow channel (211), the second valve core flow channel (212) and the third valve core flow channel (213) are not connected to each other.

6. The multi-way valve according to claim 5, wherein, The valve body (1) includes a pressure equalizing chamber (11) formed above the valve core assembly (2), and the valve core assembly (2) also includes a pressure relief structure (6) provided between each valve core flow channel (21) and the pressure equalizing chamber (11), and the pressure relief structure (6) is configured to allow the fluid in the valve core flow channel (21) to flow unidirectionally into the pressure equalizing chamber (11) when the difference between the pressure of the fluid in the valve core flow channel (21) and the pressure of the fluid in the pressure equalizing chamber (11) is greater than a preset value.

7. The multi-way valve according to claim 6, wherein, The pressure relief structure (6) includes a pressure relief hole (61) opened on the valve core assembly (2) and connecting the pressure equalizing chamber (11) and the valve core flow channel (21), a connecting rod (62) connected to the valve core assembly (2), and a flexible portion (63) located in the pressure equalizing chamber (11) and connected to the connecting rod (62), wherein the flexible portion (63) includes a first posture covering the upper end of the pressure relief hole (61) when the difference is not greater than a preset value, and a second posture that tilts upward from the first posture when the difference is greater than the preset value so that the valve core flow channel (21) and the pressure equalizing chamber (11) are connected through the pressure relief hole (61).

8. The multi-way valve according to claim 5, characterized in that, The two openings (31) connected to the first valve core flow channel (211) are the first opening (311) and the second opening (312); the two openings (31) connected to the second valve core flow channel (212) are the third opening (313) and the fourth opening (314); the two openings (31) connected to the third valve core flow channel (213) are the fifth opening (315) and the sixth opening (316); along the circumferential direction of the valve disc (3), the first opening (311), the third opening (313), the second opening (312), the fifth opening (315), the sixth opening (316), and the fourth opening (314) are arranged in sequence.

9. The multi-way valve according to claim 8, characterized in that, The valve disc (3) includes a guide column (33) located at the center thereof and extending in the up-down direction. An opening (47) for inserting the guide column (33) is formed on the valve disc upper cover (4). At least part of the guide column (33) is located in the middle of the first valve core flow channel (211). The valve disc (3) also includes a guide structure (34) located in the middle of the first valve core flow channel (211). The guide structure (34) extends from the guide column (33) toward the opening (31) connected to the first valve core flow channel (211). Along the extension direction of the guide structure (34), the width of the guide structure (34) tends to gradually decrease.

10. A valve integration device, characterized in that, It comprises a multi-way valve (10) as claimed in any one of claims 1 to 9 and a manifold, wherein the manifold is provided with manifold flow channels corresponding one to one with the valve body flow channels.

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