Multi-way valve

Abstract

A multi-way valve. The multi-way valve comprises a valve body (10) and a valve core (20), wherein the valve body (10) is provided with at least one first opening (11) and at least one second opening (12); and the valve core (20) is mounted in the valve body (10) and can rotate about its own axis in the valve body (10); and a first channel (21) and a communication port are provided in the valve core (20), wherein the communication port is in communication with the first channel (21), the first channel (21) is always in communication with one of the first openings (11), and when the valve core (20) rotates into a mode in which the communication port and the second opening (12) are in communication, the communication port is in communication with at least one of the second openings (12). The multi-way valve has a simple and stable structure and is flexible in terms of change.

Description

Multi-way valve

[0001] Related applications

[0002] This application claims priority to Chinese patent application number 202410362543.1, filed on March 27, 2024, with the invention name “Multi-way Valve”, the entire contents of which are incorporated by reference into this application. Technical Field

[0003] The present application relates to the field of valve technology, and in particular to a multi-way valve. Background Art

[0004] Multi-way valves are widely used in the thermal management system of electric vehicles to switch pipelines.

[0005] To facilitate pipeline switching, multi-way valves in related technologies typically have multiple openings in the valve body and multiple flow chambers in the valve core. Rotating the valve core allows for different flow conditions between the openings. However, the same opening will connect to different flow chambers as the valve core rotates, resulting in a complex structure for the valve body and valve core. Summary of the Invention

[0006] Based on this, the present application provides a multi-way valve to address the above technical issues.

[0007] A multi-way valve, comprising: a valve body, the valve body being constructed with at least one first opening and at least one second opening; a valve core, the valve core being installed in the valve body and being able to rotate around its own axis in the valve body, the valve core being provided with a first channel and a connecting port, the connecting port being connected to the first channel; wherein the first channel is always connected to at least one of the first openings, and when the valve core is rotated to a mode in which the connecting port and the second opening are connected, the connecting port is connected to at least one of the second openings.

[0008] The details of one or more embodiments of the present application are set forth in the accompanying drawings and the description below. Other features, objects, and advantages of the present application will become apparent from the description, drawings, and claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] In order to better describe and illustrate the embodiments and / or examples of the inventions disclosed herein, reference may be made to one or more of the accompanying drawings. The additional details or examples used to describe the accompanying drawings should not be considered to limit the scope of the disclosed inventions, the presently described embodiments and / or examples, and any of the best modes currently understood for these inventions.

[0010] FIG1 is a perspective view of one embodiment of a multi-way valve provided in the present application.

[0011] FIG2 is a three-dimensional view from another angle of one embodiment of the multi-way valve provided in the present application.

[0012] FIG3 is a partial structural diagram of one embodiment of the multi-way valve provided in the present application.

[0013] FIG4 is a schematic structural diagram of a valve core of one embodiment of a multi-way valve provided in the present application.

[0014] FIG5 is a schematic structural diagram of a valve core at another angle of one embodiment of the multi-way valve provided in the present application.

[0015] FIG6 is a schematic structural diagram of a valve core and a sealing gasket of one embodiment of a multi-way valve provided in the present application.

[0016] FIG7 is a schematic structural diagram of a valve core at another angle of one embodiment of the multi-way valve provided in the present application.

[0017] FIG8 is a schematic diagram of the multi-way valve provided in the present application in a first conduction mode.

[0018] FIG9 is a schematic diagram of the multi-way valve provided in the present application in a first conduction mode.

[0019] FIG10 is a schematic diagram of the multi-way valve provided in the present application in the first conduction mode.

[0020] FIG11 is a schematic diagram of the multi-way valve provided in the present application in the first conduction mode.

[0021] FIG12 is a schematic diagram of the multi-way valve provided in the present application in the first conduction mode.

[0022] FIG13 is a flow rate variation diagram of the valve core of the multi-way valve provided in the present application at different rotation angles.

[0023] FIG14 is a flow rate variation table of the multi-way valve provided in the present application when the valve core is at different rotation angles.

[0024] FIG15 is a flow rate variation table of the multi-way valve provided in the present application when the valve core is at different rotation angles.

[0025] The symbols in the figure represent the following meanings: 100, multi-way valve; 10, valve body; 11, first opening; 12, second opening; 20, valve core; 21, first channel; 211, first connecting port; 212, second connecting port; 213, third connecting port; 214, first cavity; 215, second cavity; 216, fifth connecting port; 22, second channel; 221, fourth connecting port; 222, reinforcing rib; 23, first sector; 24, second sector; 25, third sector; 26, fourth sector; 27, first partition; 28, second partition; 29, dividing block; 30, sealing gasket; 31, incision; 32, convex rib. DETAILED DESCRIPTION

[0026] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0027] It should be noted that when a mechanism is referred to as being "fixed to" or "set on" another mechanism, it may be directly on the other mechanism or there may be a central mechanism. When a mechanism is considered to be "connected to" another mechanism, it may be directly connected to the other mechanism or there may be a central mechanism at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the specification of this application are for illustrative purposes only and do not represent the only implementation method.

[0028] 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.

[0029] In this application, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it can mean that the first feature is directly in contact with the second feature, or the first feature and the second feature are indirectly in contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it can mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is higher in level than the second feature. When a first feature is "below," "below," or "below" a second feature, it can mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is lower in level than the second feature.

[0030] Unless otherwise defined, all technical and scientific terms used in the specification of this application have the same meaning as commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in the specification of this application includes any and all combinations of one or more of the relevant listed items.

[0031] Please refer to Figures 1 to 3. The multi-way valve 100 includes a valve body 10 and a valve core 20. The valve body 10 is constructed with at least one first opening 11 and at least one second opening 12. The valve core 20 is installed in the valve body 10 and can rotate around its own axis in the valve body 10. In this embodiment, the valve core 20 and at least part of the valve body 10 are arranged in a circular shape, so the valve core 20 can rotate freely in the valve body 10 without interference. In this embodiment, the valve core 20 and the valve body 10 are coaxially arranged, that is, the valve core 20 rotates around the axis of the valve body 10.

[0032] Referring to Figures 4-6 , the valve core 20 is provided with a first channel 21 and a communication port, which is connected to the first channel 21. The first channel 21 is always connected to one first opening 11. When the valve core 20 rotates to a mode where the communication port is connected to the second opening 12, the communication port is connected to at least one second opening 12. Thus, the first communication port 211 is always connected to the first opening 11, allowing the first channel 21 to always communicate with the first opening 11. The medium can flow from the first opening 11 into the first channel 21 and can also flow out of the first opening 11 from the first channel 21. The first channel 21 can always communicate with the first opening 11, simplifying the structure of the valve body 10 and the valve core 20 during adjustment of the conduction mode of the multi-way valve 100.

[0033] Furthermore, the first opening 11 and the second opening 12 are spaced apart in the axial direction of the valve body 10, and the valve core 20 and the first opening 11 are located at different axial positions of the valve body 10. In this way, the rotation of the valve core 20 does not affect the first opening 11, ensuring that the first opening 11 is always open and the first channel 21 is always connected to one of the first openings 11.

[0034] In this embodiment, the communication port includes a second communication port 212, and there are two second openings 12. As the valve core 20 rotates, the second communication port 212 can communicate with both second openings 12, and the first opening 11 can communicate with both second openings 12. In other words, the medium can flow into the valve body 10 from the first opening 11 and flow out of the two second openings 12 through the second communication port 212. The specific process is as follows: the second communication port 212 can first partially communicate with at least one second opening 12, then fully communicate, and then, as the valve core 20 further rotates, communicate with two adjacent second openings 12. When the second communication port 212 communicates with one second opening 12, with the first opening 11 serving as the inlet, the medium can enter the first channel 21 through the first opening 11 and then flow out of the second opening 12 through the second communication port 212. When the second communicating port 212 is connected to the two second openings 12 and the first opening 11 serves as an inlet, the medium can enter the first channel 21 through the first opening 11 and then flow out of the second openings 12 through the second communicating port 212. By rotating the valve core 20, the conductive area between the two second openings 12 and the second communicating port 212 is adjusted, thereby achieving precise regulation of the flow rate of the two second openings 12.

[0035] Please refer to Figures 13 to 15. The first opening 11 serves as inlet A, and the two second openings 12 are outlets B and C respectively. The flow of inlet A is equal to that of outlet B in the initial state (see Figure 13); thereafter, part of the flow of inlet A flows out from outlet B, and the other part flows out from outlet C. During the entire process of adjusting the flow of the two second openings 12, the valve core 20 has a large rotation angle range. As the valve core 20 rotates, the flow curves of the two second openings 12 change smoothly, and there will be no exponential mutation of the flow.

[0036] The communication port also includes a third communication port 213. As the valve core 20 rotates further, when the valve core 20 rotates to a mode where the third communication port 213 communicates with the second opening 12, the second communication port 212 rotates to a position where it is disconnected from the second opening 12. At this point, the third communication port 213 can partially communicate with at least one second opening 12, then fully communicate, and then communicate with two adjacent second openings 12. When the third communication port 213 communicates with one second opening 12, with the first opening 11 serving as the inlet, medium can enter the first channel 21 through the first opening 11 and then flow out of the second opening 12 through the third communication port 213. When the third communication port 213 communicates with two second openings 12, with the first opening 11 serving as the inlet, medium can enter the first channel 21 through the first opening 11 and then flow out of each second opening 12 through the third communication port 213. Rotating the valve core 20 adjusts the conduction area between the two second openings 12 and the third communication port 213, achieving precise regulation of the flow rate of the two second openings 12. During the entire process of regulating the flow of the two second openings 12, the valve core rotates in a wide angle range, and the flow curves of the two second openings 12 change smoothly. The third communication port 213 cooperates with the second communication port 212 to increase the range of conduction mode adjustment of the valve core 20.

[0037] The multi-way valve 100 includes a sealing gasket 30, which is positioned between the valve core 20 and the inner wall of the valve body 10 and connected to the valve body 10. The outer periphery of the valve core 20 abuts the side of the sealing gasket 30 facing the valve core 20. The sealing gasket 30 has a notch 31 that faces the second opening 12. The first opening 11 and the sealing gasket 30 are spaced apart in the axial projection of the valve body 10. The first opening 11 is located outside the area corresponding to the valve body 10 and the sealing gasket 30. In other words, the sealing gasket 30 is not required at the first opening 11 of the valve body 10; at least a portion of the sealing gasket 30 is located between the first opening 11 and the second opening 12. One side of the sealing gasket 30 in the thickness direction contacts and seals against the surface of the valve core 20, while the other side of the sealing gasket 30 in the thickness direction is sealingly connected to the inner surface of the valve body 10. Therefore, fluid leakage is less likely to occur at the connection between the valve core 20 and the valve body 10. The sealing gasket 30 improves the sealing performance between the valve core 20 and the valve body 10, preventing leakage of the medium. The cutout 31 of the sealing gasket 30 can prevent the sealing gasket 30 from affecting the communication between the valve core 20 and the first opening 11 and / or the second opening 12 .

[0038] Specifically, there are two cutouts 31, each of which communicates with a corresponding second opening 12. Thus, one side of the sealing gasket 30 in the thickness direction serves as the inner circumference of the sealing gasket 30. The outer circumference of the valve core 20 abuts the inner circumference of the sealing gasket 30. As the valve core 20 rotates, the second communication port 212, the third communication port 213, and the fourth communication port 221 each communicate with the cutout 31 and, in turn, communicate through the second opening 12 corresponding to the cutout 31. Fluid passing through the cutout 31 can only flow through the second opening 12 directly opposite it, ensuring accurate flow at each second opening 12 and preventing internal leakage.

[0039] The outer circumference of the gasket 30 is defined by its other side in the thickness direction. This outer circumference is provided with a plurality of ribs 32 arranged in an array and connected to the valve body 10. The ribs 32 reduce the contact area between the gasket 30 and the valve body 10, thereby increasing the pressure per unit area and thereby improving the tightness and strength of the connection. This ensures a stable position and prevents positional shifting due to friction with the rotating valve core 20, while also enhancing sealing performance.

[0040] The multi-way valve 100 has multiple conduction modes, including a first conduction mode, a second conduction mode, a third conduction mode, a fourth conduction mode, a fifth conduction mode, and a sixth conduction mode. In the first five conduction modes, the multi-way valve 100 communicates with the second opening 12 via the first channel 21. In the sixth conduction mode, the multi-way valve 100 communicates with the second opening 12 via the second channel 22. The multi-way valve 100 switches between the multiple conduction modes by rotating the valve core 20. Each conduction mode is described in detail below:

[0041] When the multi-way valve 100 is in the first conduction mode, the first opening 11 serves as the water inlet, the second opening 12 serves as the water outlet, the first opening 11 communicates with the first channel 21, and the second communication port 212 communicates with one of the second openings 12. Thus, as the valve core 20 rotates, the conduction area between the second communication port 212 and the second opening 12 gradually increases until the second communication port 212 and the second opening 12 are fully connected, at which point the flow area between the second communication port 212 and the one of the second openings 12 reaches its maximum. Alternatively, the conduction area between the second communication port 212 and the second opening 12 gradually decreases from a maximum area. The flow path of the medium is to enter from the first opening 11, pass through the first communication port 211 into the first channel 21, and then flow out from the second communication port 212 through the second opening 12.

[0042] When the multi-way valve 100 is in the second conduction mode, the first opening 11 still functions as the water inlet, and the second opening 12 functions as the water outlet. The first opening 11 is always in communication with the first channel 21 via the first communication port 211, while the second communication port 212 is in communication with two adjacent second openings 12. Specifically, a portion of the second communication port 212 is in communication with a portion of one second opening 12, while another portion of the second opening 12 is in communication with a portion of another second opening 12. As the valve core 20 rotates, the second communication port 212 first communicates with one second opening 12, entering the first conduction mode. As the valve core 20 rotates further, the second communication port 212 then communicates with the other adjacent second opening 12, entering the second conduction mode, thereby switching the medium flow path. Furthermore, as the valve core 20 continues to rotate, the communication area of ​​the second opening 12 that first communicates with the second communication port 212 gradually decreases, while the communication area of ​​the second opening 12 that later communicates with the second communication port 212 gradually increases.

[0043] When the multi-way valve 100 is in the third conduction mode, the first opening 11 still serves as the water inlet, the second opening 12 serves as the water outlet, the first opening 11 and the first channel 21 are always connected through the first connecting port 211, the second connecting port 212 is connected to one of the second openings 12, and the third connecting port 213 is connected to the other of the two second openings 12, that is, the two second openings 12 have corresponding connecting ports that are connected and connected to the first channel 21.

[0044] When the multi-way valve 100 is in the fourth conduction mode, the first opening 11 still serves as the water inlet, and the second opening 12 serves as the water outlet. The first opening 11 and the first channel 21 are always in communication through the first communication port 211. The difference is that the third communication port 213 is in communication with one of the second openings 12. In other words, as the valve core 20 continues to rotate, the second communication port 212 in the second conduction mode rotates to a position where it is disconnected from both second openings 12. At this time, the third communication port 213 rotates to the position of the second communication port 212 in the first conduction mode, so as to communicate with one of the second openings 12. The flow path of the medium is as follows: it enters from the first opening 11, enters the first channel 21 through the first communication port 211, and then flows out from the third communication port 213 through the second opening 12.

[0045] When the multi-way valve 100 is in the fifth conduction mode, the first opening 11 serves as the water inlet and the second opening 12 serves as the water outlet. The first opening 11 communicates with the first channel 21 via the first communication port 211, and the third communication port 213 communicates with two adjacent second openings 12. It will be appreciated that, similar to the second conduction mode, as the valve core 20 further rotates, the position of the third communication port 213 rotates from communicating with only one second opening 12 to communicating with both adjacent second openings 12. As the valve core 20 continues to rotate, the communication area of ​​the second opening 12 that first communicates with the third communication port 213 gradually decreases, while the communication area of ​​the second opening 12 that later communicates with the third communication port 213 gradually increases.

[0046] For example, referring to Figure 8 , the black area represents the area through which the medium can flow, the light gray area represents the sealing gasket 30, and the off-white area represents the cutouts 31 formed in the sealing gasket 30, namely, the two cutouts 31 that can communicate with the two second openings 12. In Figure 8 , the valve core 20 is rotated to an initial position of 0°, the multi-way valve 100 is in the first conduction mode, and the second communication port 212 is connected to only one second opening 12. When the valve core 20 is rotated to 25°, as shown in Figure 9 , the valve core 20 remains in the first conduction mode.

[0047] Referring to Figure 10 , when the valve core 20 rotates to 48°, the multi-way valve 100 is in the second conduction mode, with the second communication port 212 communicating with two adjacent second openings 12, and the two second openings 12 communicating with the second communication port 212 over the same area. Referring to Figure 11 , when the valve core 20 rotates to 70°, the second communication port 212 is fully connected to the other second opening 12, and one second opening 12 remains closed.

[0048] 12 , when the valve core 20 further rotates 70°, the two second openings 12 remain closed, and the sixth conduction mode is entered, where the second channel 22 is connected to the two second openings 12 .

[0049] When the multi-way valve 100 is in the sixth conduction mode, at least one second opening 12 functions as a water inlet, at least one second opening 12 functions as a water outlet, and the second channel 22 is in communication with both the water inlet and the water outlet. That is, as the valve core 20 rotates further, the second communication port 212 and the third communication port 213 both rotate to positions where they are no longer in communication with the second opening 12. Fluid flowing into the second and third communication ports 212 and 213 through the first opening 11 is unable to flow out through the second opening 12. At this point, the first opening 11 functions neither as a water inlet nor as a water outlet. Instead, one of the two second openings 12 functions as a water inlet, and the other functions as a water outlet. The medium flows from one of the second openings 12 into the second channel 22 and then flows out of the other second opening 12 through the second channel 22, thereby achieving pipeline switching.

[0050] Furthermore, the first channel 21 includes a first chamber 214 and a second chamber 215 that communicate with each other. The first chamber 214 is located at the end of the valve core 20 near the first opening 11. A first communication port 211 is defined in the wall of the first chamber 214 facing the first opening 11. The first communication port 211 is always in communication with the first opening 11. A second communication port 212 is defined in the wall forming the first chamber 214. As the valve core 20 rotates, the first chamber 214 communicates with the at least one second opening 12 through the second communication port 212. The second chamber 215 is located at the end of the valve core 20 near the first opening 11. A fifth communication port 216 is defined in the wall of the second chamber 215 facing the first opening 11. The fifth communication port 216 is always in communication with the at least one first opening 11. A third communication port 213 is defined in the circumferential wall forming the second chamber 215. As the valve core 20 rotates, the second chamber 215 communicates with the at least one second opening 12 through the third communication port 213. In this way, the first channel 21 is divided into a first cavity 214 and a second cavity 215, and the first cavity 214 and the second cavity 215 are connected to the second opening 12 through different communication ports, thereby achieving more conduction modes. In other embodiments, the first cavity 214 and the second cavity 215 may not be connected.

[0051] It should be explained that in this embodiment, the first cavity 214 is connected to the second opening 12 through the second communication port 212, and as the valve core rotates, the second cavity 215 is connected to the second opening 12 through the third communication port 213. The positions of the second communication port 212 and the third communication port 213 are symmetrical with respect to the center line of the valve core, and the structures and technical effects of the two are the same. Therefore, in other embodiments, the positions of the second communication port 212 and the third communication port 213 can also be interchanged, and are not limited to the above-mentioned embodiment in which the first cavity 214 and the second communication port 212 correspond to each other. The first communication port 211 and the fifth communication port 216 are both opened on one end face of the axial direction of the valve core 20. The cross-sections of the first cavity 214 and the second cavity 215 are both arranged in a fan shape, and the second communication port 212 and the third communication port 213 are arranged at intervals on the circumferential side wall of the valve core 20. In this way, the fan-shaped first cavity 214 and the second cavity 215 are more suitable for the circular valve core 20, and the second connecting port 212 and the third connecting port 213 are opened on the outer peripheral side of the valve core 20. As the valve core 20 rotates, the second connecting port 212 and the third connecting port 213 are connected to the second opening 12.

[0052] Of course, in other embodiments, the second communication port 212 and the third communication port 213 can also be opened on the axial side of the valve core 20, and other flow channels are added to communicate with the second opening 12, and are not limited to the above-mentioned solution of opening on the outer peripheral side wall of the valve core 20.

[0053] The valve core 20 also includes a second channel 22 spaced apart from the first channel 21. A fourth communication port 221 is also defined on the circumferential sidewall of the valve core 20. The second channel 22 communicates with at least two second openings 12 via the fourth communication port 221. This ensures the implementation of the sixth conduction mode. The fourth communication port 221 allows the medium in the second opening 12 to enter the second channel 22 and then exit through another second opening 12, achieving pipeline switching. The presence of this port on the sidewall allows the valve core 20 to directly face and connect the fourth communication port 221 to the second opening 12 with a simple rotation.

[0054] Furthermore, reinforcing ribs 222 are provided within the second channel 22. The ribs 222 are connected to the inner walls of the second channel 22 on both sides of the circumference of the valve core 20. Thus, the ribs 222 enhance the structural strength of the valve core 20, help distribute stress within the valve core 20, and improve the durability of the valve core 20. The design of the ribs 222 also minimizes their impact on the flow of the medium within the second channel 22.

[0055] Referring to Figure 7 , the valve core 20 is divided into a first sector 23, a second sector 24, a third sector 25, and a fourth sector 26 along the circumferential direction. The second communication port 212 is located in the first sector 23, the third communication port 213 is located in the third sector 25, and the fourth communication port 221 is located in the fourth sector 26. The second sector 24 is located between the second communication port 212 and the third communication port 213 and separates the second communication port 212 and the third communication port 213. The valve core 20 is provided with a first partition plate 27, a second partition plate 28, and a partition block 29. The partition block 29 is located in the second sector 24 and between the second communication port 212 and the third communication port 213. The first partition plate 27 is located between the first sector 23 and the fourth sector 26, and the second partition plate 28 is located between the third sector 25 and the fourth sector 26. In this way, the first partition plate 27 ensures that the medium between the first sector 23 and the fourth sector 26 is isolated, preventing the mixing of the medium when only the first channel 21 or the second channel 22 is opened. The second partition plate 28 ensures that the medium between the third sector 25 and the fourth sector 26 is isolated. The dividing block 29 separates the first sector 23 and the third sector 25 so that both can independently communicate with the second opening 12.

[0056] Compared to related technologies, the present invention provides a second communication port 212 and a third communication port 213 on the valve core 20. Rotation of the valve core 20 selectively connects these ports to one or both second openings 12 to switch between different conduction modes. Furthermore, in different conduction modes, the second opening 12 can function as both an inlet and an outlet, resulting in a simple, stable, and flexible structure. As the valve core 20 rotates, the second communication port 212 and the third communication port 213 can each connect to the two second openings 12, allowing precise adjustment of the flow rates of the two second openings 12.

[0057] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0058] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A multi-way valve, characterized in that: The multi-way valve comprises: a valve body configured with at least one first opening and at least one second opening; a valve core, the valve core being installed in the valve body and being rotatable about its own axis in the valve body, the valve core being provided with a first passage and a communication port, the communication port being communicated with the first passage; The first channel is always in communication with at least one of the first openings, and when the valve core rotates to a mode in which the communication port and the second opening are in communication, the communication port is in communication with at least one of the second openings.

2. The multi-way valve according to claim 1, wherein: The first opening and the second opening are axially spaced apart from each other on the valve body; The valve core and the first opening are located at different axial positions of the valve body.

3. The multi-way valve according to claim 1, wherein: The communication port includes two second communication ports, and the number of the second communication ports is two. When the valve core rotates to a mode in which the second communication port is connected to both of the second openings, the first opening is connected to both of the second openings. The multi-way valve according to claim 1 , wherein: The communication port includes a second communication port, the first channel includes a first cavity, the first cavity is located at an end of the valve core close to the first opening; a first communication port is provided on a cavity wall at one end of the first cavity facing the first opening, and the first communication port is always connected to at least one of the first openings; When the valve core rotates to a mode in which the second communication port is communicated with the second opening, the first chamber is communicated with at least one of the second openings through the second communication port.

5. The multi-way valve according to claim 4, wherein: The first channel further includes a second cavity, and the second cavity is located at an end of the valve core close to the first opening; A fifth communicating port is provided on the cavity wall at one end of the second cavity facing the first opening, and the fifth communicating port is always connected to at least one of the first openings; the communicating port also includes a third communicating port, and when the valve core rotates to a mode in which the third communicating port and the second opening are connected, the second cavity is connected to at least one of the second openings through the third communicating port. The multi-way valve according to claim 5 , wherein: The second communication port is formed in the circumferential cavity wall of the first cavity, and / or the third communication port is formed in the circumferential cavity wall of the second cavity.

7. The multi-way valve according to claim 5, wherein: The second communication port and the third communication port are symmetrically arranged relative to a center line of the valve core.

8. The multi-way valve according to claim 5, wherein: The first communication port and the fifth communication port are both opened on one end surface of the valve core in the axial direction, and the second communication port and the third communication port are spaced apart from each other on the side wall of the valve core in the circumferential direction.

9. The multi-way valve according to claim 5, wherein: The valve core further includes a second channel spaced apart from the first channel. A fourth communication port is further provided on a circumferential side wall of the valve core. The second channel is communicated with at least two of the second openings through the fourth communication port.

10. The multi-way valve according to claim 9, wherein: The valve core is divided into a first sector area, a second sector area, a third sector area and a fourth sector area along the circumferential direction. The second communicating port is located in the first sector area, the third communicating port is located in the third sector area, and the fourth communicating port is located in the fourth sector area; the second sector area is located between the second communicating port and the third communicating port and separates the second communicating port and the third communicating port. The multi-way valve according to claim 10 , wherein: The valve core is provided with a first partition plate, a second partition plate and a partition block. The partition block is located in the second sector area and between the second connecting port and the third connecting port. The first partition plate is located between the first sector area and the fourth sector area, and the second partition plate is located between the third sector area and the fourth sector area.

12. The multi-way valve according to claim 5, wherein: The cross sections of the first cavity and the second cavity are both arranged to be fan-shaped.

13. The multi-way valve according to claim 1, wherein: The multi-way valve also includes a sealing gasket, which is located between the valve core and the inner wall of the valve body and connected to the valve body. The outer peripheral side of the valve core abuts against the side of the sealing gasket facing the valve core. The sealing gasket is provided with at least one incision facing the second opening. The first opening and the sealing gasket are spaced apart by their projections in the axial direction of the valve body.

14. The multi-way valve according to claim 13, wherein: There are two cutouts, and each cutout is connected to a corresponding second opening.

15. The multi-way valve according to claim 13, wherein: One side surface of the sealing gasket in the thickness direction is the inner peripheral side of the sealing gasket, and the other side surface is the outer peripheral side of the sealing gasket; wherein, the outer peripheral side is provided with a rib, and the rib is connected to the valve body.

16. The multi-way valve according to claim 15, wherein: There are multiple convex ribs, and the multiple convex ribs are arranged in an array.

17. The multi-way valve according to claim 1, wherein: The multi-way valve has a first conduction mode and a second conduction mode, and the multi-way valve switches between the multiple conduction modes by rotating the valve core; When the multi-way valve is in a first conduction mode, the first opening is in conduction with the first channel, and the communication port is in conduction with one of the second openings; When the multi-way valve is in the second conducting mode, the first opening is in conduction with the first channel, and the communication port is in conduction with two adjacent second openings.

18. The multi-way valve according to claim 1, wherein The communication ports are provided in plurality, including at least a first communication port, a second communication port, and a third communication port. The multi-way valve further includes a third conduction mode, a fourth conduction mode, and a fifth conduction mode. The multi-way valve switches between the plurality of conduction modes by rotating the valve core. When the multi-way valve is in the third conduction mode, the first opening is communicated with the first channel through the first communication port, the second communication port is communicated with one of the second openings, and the third communication port is communicated with another of the second openings; When the multi-way valve is in a fourth conduction mode, the first opening is communicated with the first channel through the first communication port, and the third communication port is communicated with one of the second openings; When the multi-way valve is in the fifth conducting mode, the first opening is in conduction with the first channel through the first communicating port, and the third communicating port is in conduction with two adjacent second openings.

19. The multi-way valve according to claim 13, wherein: The valve core further includes a second channel, and the valve core further defines a fourth communication port, wherein the second channel is connected to at least two of the second openings via the fourth communication port; The multi-way valve also has a sixth conduction mode. When the multi-way valve is in the sixth conduction mode, at least one of the second openings serves as a water inlet, at least one of the second openings serves as a water outlet, and the second channel is simultaneously connected to the two second openings.

20. The multi-way valve according to claim 19, wherein A reinforcing rib is provided in the second channel, and two ends of the reinforcing rib are respectively connected to two inner walls of the second channel in the circumferential direction of the valve core.

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