Multi-way valve

Abstract

The embodiment of the utility model provides a multi-way valve. The multi-way valve comprises a valve body and a valve element. The valve body is provided with a containing cavity, and four channels are formed in the side wall of the valve body in the circumferential direction of the valve body at intervals. The valve element is rotatably arranged in the containing cavity and comprises a separation part, and a first communication space and a second communication space are formed in the two sides of the separation part correspondingly; wherein the first communication space and the second communication space are respectively communicated with different channels, the number of the channels communicated with the first communication space is a first number, the number of the channels communicated with the second communication space is a second number, and the first number is greater than or equal to the second number. According to the multi-way valve provided by the embodiment of the invention, different mutually independent runners can be formed, so that the multi-way valve realizes different working conditions; the multi-way valve has multiple states to achieve different working conditions, and multiple working conditions are achieved through state switching. The multi-way valve can form more types of flow channels, so that more working conditions are realized.

Description

Technical Field

[0001] This application relates to the technical field of valves, and particularly to a multi-way valve. Background Art

[0002] A multi-way valve is a valve with multiple channels, used to connect multiple pipelines to achieve functions such as fluid diversion and mixing in the pipelines. Multi-way valves are widely used in fields such as water supply systems, air conditioning systems, and automotive thermal management systems. Currently, with the development of new energy vehicles, the working conditions required by new energy vehicles are increasing, making the thermal management system of new energy vehicles also need to achieve increasingly complex multiple working conditions.

[0003] In related technologies, the types and quantities of valves are increased in the thermal circulation loop to adapt to increasingly complex multiple working conditions. However, this will increase the complexity and cost of the thermal circulation system. Utility Model Content

[0004] Based on this, the embodiments of this application provide a multi-way valve that can achieve multiple working conditions.

[0005] The embodiments of this application provide a multi-way valve, which includes:

[0006] A valve body having an accommodation cavity, the valve body includes multiple channels, and the multiple channels are circumferentially spaced along the side wall of the valve body;

[0007] A valve core rotatably disposed in the accommodation cavity, the valve core includes a partition portion, and a first communication space and a second communication space are respectively formed on both sides of the partition portion;

[0008] Wherein, the first communication space and the second communication space are respectively communicated with different channels, the number of channels communicated with the first communication space is a first number, the number of channels communicated with the second communication space is a second number, and the first number is greater than or equal to the second number.

[0009] In some embodiments, the multi-way valve is a four-way valve, the four-way valve includes four channels, and the four-way valve includes:

[0010] A first state, the first communication space is communicated with three of the four channels, and the second communication space is communicated with another one of the channels;

[0011] A second state, the first communication space is communicated with two of the channels, the second communication space is communicated with one of the other two channels, and the partition portion can block the other one of the other two channels;

[0012] Third state, the first communication space is in communication with two of the channels, and the second communication space is in communication with the other two channels.

[0013] In some embodiments, the degree of the first arc at the edge of the first communication space is the first degree, and the degree of the second arc at the edge of the second communication space is the second degree; the maximum included angle between the two channels that are the farthest apart along the circumferential direction of the valve body is the third degree, the minimum included angle is the fourth degree, and the degree of the minimum included angle between two adjacent channels is the fifth degree; the first degree is greater than the fourth degree and less than or equal to the third degree, and the second degree is greater than the fifth degree and less than the third degree.

[0014] In some embodiments, the multi-way valve further includes a driving member, and the valve core further includes a valve core shaft, and the driving member is drivingly connected to the valve core shaft.

[0015] In some embodiments, the multi-way valve further includes an end cap, the end cap has a mounting hole, the end cap is arranged between the driving member and the valve core along the height direction of the multi-way valve, and a part of the valve core shaft is disposed through the mounting hole.

[0016] In some embodiments, the multi-way valve further includes a sealing ring, and the sealing ring is sleeved on the valve core shaft and abuts against the hole wall of the mounting hole.

[0017] In some embodiments, the side surface of the partition portion that forms the first communication space is the first wall surface, the first wall surface is arc-shaped, the side surface of the partition portion that forms the second communication space is the second wall surface, and the second wall surface is arc-shaped.

[0018] In some embodiments, the edges of the valve core that form the first communication space and the second communication space are coated with sealing ribs.

[0019] In some embodiments, the multi-way valve further includes an internal leakage seal, and the internal leakage seal is arranged between the valve core and the valve body along the radial direction of the valve body. The internal leakage seal is fixedly connected to the valve body, and the internal leakage seal is provided with communication ports corresponding to the channels.

[0020] In some embodiments, the multi-way valve further includes an end face seal, and the end face seal is arranged at the bottom of the valve body for sealing the gap when the valve body is connected to an external component.

[0021] The multi-way valve provided by the embodiment of the present application has a first communication space and a second communication space formed on both sides of the partition part of the valve core. The first communication space and the second communication space are respectively communicated with different channels to form different independent flow channels. Furthermore, through the independent flow channels, the multi-way valve can achieve different working conditions; when the valve core rotates to different positions, different flow channels can be formed in the multi-way valve to communicate with different external pipelines, so that the multi-way valve has multiple states to achieve different working modes, and through the switching of states, the switching between the working conditions of multiple heat circulation circuits can be realized; by making the first number greater than or equal to the second number, it is beneficial to form more types of flow channels in the multi-way valve, thereby adapting to more working conditions of heat circulation circuits. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 FIG. is an exploded view of a multi-way valve in an embodiment of the present application.

[0023] Figure 2 FIG. is a schematic diagram of a valve core in an embodiment of the present application.

[0024] Figure 3 FIG. is a schematic diagram of the first state of the flow channel connection of the multi-way valve in an embodiment of the present application.

[0025] Figure 4 FIG. is a schematic diagram of the second state of the flow channel connection of the multi-way valve in an embodiment of the present application.

[0026] Figure 5 FIG. is a schematic diagram of the third state of the flow channel connection of the multi-way valve in an embodiment of the present application.

[0027] Figure 6 FIG. is a schematic diagram of each degree in the multi-way valve in an embodiment of the present application.

[0028] DESCRIPTION OF REFERENCE NUMERALS

[0029] 10. Valve body; 10a. Accommodation cavity; 11a. Channel; 111a. First channel; 112a. Second channel; 113a. Third channel; 114a. Fourth channel; 20. Valve core; 21. Partition part; 21a. First communication space; 22a. Second communication space; 23a. First arc; 23b. Second arc; 24. Valve core shaft; 24a. First wall surface; 24b. Second wall surface; 25. Sealing rib; 30. Driving part; 40. End cover; 40a. Mounting hole; 50. Sealing ring; 60. Internal leakage seal; 60a. Communication port; 70. End face seal. DETAILED DESCRIPTION

[0030] To make the above objects, features, and advantages of the present application more obvious and understandable, the following will describe the specific embodiments of the present application in detail with reference to the accompanying drawings. Many specific details are set forth in the following description to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0031] In the description of the present application, it should be understood that if terms such as "center", "length", "upper", "lower", "top", "bottom", "inner", "outer", "circumferential", "radial", etc. appear, the orientation or positional relationship indicated by these terms is based on the orientation or positional relationship shown in the accompanying drawings. These are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of the present application.

[0032] In addition, if terms such as "first" and "second" appear, these terms are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0033] In the present application, unless otherwise clearly specified and limited, if terms such as "install", "connect", "connection", "fix", etc. appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. It can be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0034] In the present application, unless otherwise clearly specified and limited, if there is a description such as a first feature being "above" or "below" a second feature, the meaning can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over", and "on" the second feature can mean that the first feature is directly above or obliquely above the second feature, or simply indicates that the first feature has a higher horizontal height than the second feature. The first feature being "below", "beneath", and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or simply indicates that the first feature has a lower horizontal height than the second feature.

[0035] It should be noted that if an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there may be an intermediate element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intermediate element at the same time. If present, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are only for illustrative purposes and do not represent the only implementation.

[0036] In order to meet the thermal management requirements of multiple components in new energy vehicles, such as the thermal management requirements of motors, batteries, cockpits, etc., multiple thermal circulation loops need to be set up. In order to achieve the switching of multiple working conditions of the thermal circulation system and the connection of multiple thermal circulation loops, various valves are usually mixedly arranged in the thermal circulation loop.

[0037] However, with the development of new energy vehicles, the working conditions of the thermal circulation system are increasing. In order to achieve the switching between the working conditions of the thermal circulation system and the connection between the thermal circulation pipelines, in the related art, the types and quantities of valves are increased in the thermal circulation loop, but this will increase the complexity and cost of the thermal circulation system.

[0038] Based on this, referring to Figure 1 and Figure 2 , an embodiment of the present application provides a multi-way valve. The multi-way valve is used for a thermal circulation loop. The multi-way valve includes a valve body 10 and a valve core 20. The valve body 10 has a receiving cavity 10a. The valve body 10 includes a plurality of channels 11a. The plurality of channels 11a are circumferentially spaced along the side wall of the valve body 10 (the side wall of the valve body 10 refers to the wall surface on one side of the valve body 10 perpendicular to the Z direction). The plurality of channels 11a are respectively communicated with the outside, and the plurality of channels 11a are not directly communicated with each other.

[0039] The valve core 20 includes a separating portion 21. On both sides of the separating portion 21, a first communication space 21a and a second communication space 22a are respectively formed (both sides of the separating portion 21 refer to both sides in the direction perpendicular to the Z direction of the separating portion, that is, along the radial direction of the multi-way valve). The separating portion 21 separates the first communication space 21a from the second communication space 22a, and the first communication space 21a and the second communication space 22a are not communicated with each other. Therefore, the first communication space 21a and the second communication space 22a are respectively communicated with different channels 11a to form different independent flow paths (the flow path refers to the movement track of the fluid when the fluid flows from one or more channels 11a into the first communication space 21a or the second communication space 22a and then flows into other channels 11a). Furthermore, different connection modes are realized by the multi-way valve through independent flow paths.

[0040] The position of the channel 11a remains unchanged, while the valve core 20 is rotatably arranged in the accommodation cavity 10a. Thus, the valve core 20 can rotate relative to the channel 11a, enabling the first communication space 21a and the second communication space 22a to rotate relative to the channel 11a. When the valve core 20 rotates to different positions, the channels 11a connected to the first communication space 21a are different, and the channels 11a connected to the second communication space 22a are also different. That is to say, the channels 11a that the first communication space 21a and the second communication space 22a can connect depend on the position of the valve core 20. Therefore, when the valve core 20 rotates to different positions, different flow channels can be formed in the multi-way valve, that is, the rotation of the valve core 20 enables the multi-way valve to have multiple states. Through the multiple states of the multi-way valve, the multi-way valve can adapt to various working conditions of the thermal cycle loop, and by rotating the valve core 20, the state or working mode of the multi-way valve can be switched, thereby realizing the switching between various working conditions in the thermal cycle loop.

[0041] The number of channels 11a connected to the first communication space 21a is the first number, and the number of channels 11a connected to the second communication space 22a is the second number, and the first number is greater than or equal to the second number. That is to say, when the valve core 20 rotates to some positions, that is, in some states of the multi-way valve, the first number is equal to the second number. In this way, through the mutually independent flow channels respectively formed by the first communication space 21a and the second communication space 22a, the multi-way valve can realize different modes, which is beneficial for the multi-way valve to adapt to different working conditions of the thermal cycle loop. In other states of the multi-way valve, the first number is greater than the second number. At this time, compared with the second communication space 22a, the number of channels 11a connected to the first communication space 21a is more. Therefore, the fluid distribution relationship between more channels 11a can be adjusted to enable the multi-way valve to adapt to more complex working conditions in the thermal cycle loop. Moreover, the unequal number of channels 11a connected to the first communication space 21a and the second communication space 22a is also beneficial for forming more types of flow channels in the multi-way valve, thereby forming more working modes to adapt to more working conditions of the thermal cycle loop.

[0042] In other embodiments, the number of channels may not be four, such as three or five or more.

[0043] Taking the multi-way valve as a four-way valve as an example, the connection situation and working principle of the multi-way valve in different states in this embodiment will be introduced below. This is only for example and does not substantially limit the protection scope of the present application.

[0044] Specifically, the four-way valve includes a first state. When the four-way valve is in the first state, the first communication space 21a communicates with three channels 11a, and the second communication space 22a communicates with one channel 11a. That is to say, the three channels 11a communicating with the first communication space 21a are communicated with each other through the first communication space 21a. It can be understood that since the first communication space 21a is not communicated with the second communication space 22a, and the second communication space 22a only communicates with one channel 11a, therefore, the fluid in the channel 11a communicating with the second communication space 22a cannot flow into the first communication space 21a and other channels 11a, that is, it is equivalent to the wall surface forming the second communication space 22a blocking the channel 11a communicating with the second communication space 22a. Specifically, the fluid flows into the first communication space 21a from one channel 11a, flows through the first communication space 21a into the other two channels 11a, thereby realizing the function of flow splitting; it can also be that the fluid flows into the first communication space 21a from two channels 11a, flows through the first communication space 21a into the other one channel 11a, so as to realize the function of flow merging.

[0045] It can be understood that the partition 21 itself can block the channel 11a, that is, a part of the wall surface of the partition 21 perpendicular to the Z direction can block the channel 11a. Specifically, the valve core 20 includes a valve core body and a partition 21. The partition 21 is arranged on the valve core body. The partition 21 extends along the radial direction of the valve core body (i.e., Figure 1 or Figure 2 the direction perpendicular to the Z direction in the figure), and both ends formed by the extension can abut against the side wall of the valve body 10. Since the channel 11a is arranged on the side wall of the valve body 10, the valve core body drives the partition 21 to rotate. When one end of the partition 21 rotates to the opening of a channel 11a on the side wall of the valve body 10, this end of the partition 21 can block the opening of this channel 11a, thereby blocking this channel 11a. The valve core 20 rotates to make the partition 21 rotate. When the partition 21 rotates, it can change the size of the opening through which the channel 11a communicates with the first communication space 21a and the second communication space 22a, so that the degree of blocking of the channel 11a by the partition 21 can change with the rotation of the partition 21, so as to realize the adjustment of the flow rate of the channel 11a, which is beneficial for the four-way valve to adapt to the working conditions of different thermal management systems.

[0046] Please refer to Figure 3 , the channel 11a includes a first channel 111a, a second channel 112a, a third channel 113a, and a fourth channel 114a. It can be understood that different channels 11a communicate to form different flow channels. When the four-way valve is in the first state, the first communication space 21a communicates with three channels 11a, and the second communication space 22a communicates with one channel 11a. Therefore, when the four-way valve is in the first state, there are four communication situations for the four-way valve.Figure 3 One of the connection cases is shown in Figure 3 , that is, the first connection space 21a is connected to the first channel 111a, the second channel 112a, and the fourth channel 114a, and the second connection space 22a is connected to the third channel 113a. The above four connection cases are shown in the following table:

[0047] Table 1 Four connection cases of the four-way valve in the first state

[0048]

[0049] It should be noted that the connection state refers to the state in which the first connection space 21a and the second connection space 22a are respectively connected to different channels 11a.

[0050] In some other specific embodiments of the present application, the four-way valve includes a second state. In the second state, the first connection space 21a is connected to two of the four channels 11a, and the second connection space 22a is connected to another one of the four channels 11a. That is to say, the two channels 11a connected to the first connection space 21a are connected through the first connection space 21a, thereby forming a flow channel for fluid flow. At the same time, since the second connection space 22a is only connected to one channel 11a, it is equivalent to the wall surface forming the second connection space 22a blocking the channel 11a connected to the second connection space 22a. Specifically, the fluid flows into the first connection space 21a from one channel 11a, flows through the first connection space 21a into another channel 11a, thereby realizing the function of controlling the fluid flow direction.

[0051] Please refer to Figure 4 , the channel 11a includes a first channel 111a, a second channel 112a, a third channel 113a, and a fourth channel 114a. When the four-way valve is in the second state, the first connection space 21a is connected to two of the four channels 11a, and the second connection space 22a is connected to another one of the four channels 11a. Therefore, when the four-way valve is in the second state, the four-way valve has different connection cases. Figure 4 One of the connection cases is shown in Figure 4 , that is, the first connection space 21a is connected to the first channel 111a and the fourth channel 114a, and the second connection space 22a is connected to the second channel 112a. The specific connection cases are shown in the following table:

[0052] Table 2 Connection cases of the four-way valve in the second state

[0053]

[0054] It should be noted that the connected state refers to a state in which the first connected space 21a and the second connected space 22a are respectively connected to different channels 11a. The first connected space 21a is connected to the first channel 111a and the fourth channel 114a, and the second connected space 22a is connected to the second channel 112a or the third channel 113a means that the second connected space 22a is connected to one of the second channel 112a and the third channel 113a, and the other is blocked and not connected to the first connected space 21a and the second connected space 22a.

[0055] Specifically, in the second state, the partition 21 can block one channel 11a. That is to say, one channel 11a can be blocked through the side surface of the partition 21, so that the first connected space 21a is connected to two channels 11a, and at the same time the second connected space 22a is connected to one channel 11a.

[0056] In some other specific embodiments of the present application, the four-way valve includes a third state. In the third state, the first connected space 21a is connected to two of the four channels 11a, and the second connected space 22a is connected to the other two of the four channels 11a. It can be understood that since the first connected space 21a and the second connected space 22a are not connected, the two channels 11a connected to the first connected space 21a are different from the two channels 11a connected to the second connected space 22a. In this way, the first connected space 21a and the second connected space 22a can respectively form flow channels at the same time, and the flow channels are independent of each other.

[0057] Please refer to Figure 5 , the channel 11a includes a first channel 111a, a second channel 112a, a third channel 113a, and a fourth channel 114a. When the four-way valve is in the third state, the first connected space 21a is connected to two of the four channels 11a, and the second connected space 22a is connected to the other two of the four channels 11a. Therefore, when the four-way valve is in the third state, there are four different connection situations for the four-way valve. Figure 5 One of the connection situations is shown in

[0058] Table 3 Four connection situations of the four-way valve when the four-way valve is in the third state

[0059]

[0060] Refer to Figure 6, in some embodiments, the degree of the largest angle ( Figure 6 angle A in which indicates this largest angle) between two channels 11a that are furthest apart in the circumferential direction along the valve body 10 is the third degree, and the degree of the smallest angle ( Figure 6 angle B in which indicates this smallest angle) is the fourth degree; the degree of the first arc 23a at the edge of the first communication space 21a is the first degree, the first degree is greater than the fourth degree and less than or equal to the third degree, and the size of the first communication space 21a is determined by the degree of the first arc 23a, so that the first communication space 21a is in the shape of a sector with a degree greater than the fourth degree and less than or equal to the third degree. Furthermore, the first communication space 21a can be connected to at least two channels 11a, and in some states of the multi-way valve, the first communication space 21a can be connected to three channels 11a. The angle between two channels 11a refers to the first perpendicular line passing through a point in one channel 11a and the central axis of the valve core 20, and the second perpendicular line passing through a point in the other channel 11a and the central axis of the valve core 20, and the angle between the first perpendicular line and the second perpendicular line is the angle between the two channels 11a. It should be noted that the rotation axis around which the valve core 20 rotates in the valve body 10 is the central axis.

[0061] Therefore, for two channels 11a that are furthest apart in the circumferential direction along the valve body 10, one of the first wall surfaces on the side perpendicular to the circumferential direction of the valve body 10 of one channel 11a and the second wall surface on the side perpendicular to the circumferential direction of the valve body 10 of the other channel 11a, the first wall surface and the second wall surface are furthest apart in one circumferential direction of the valve body 10. At this time, perpendicular lines are formed by the points on the first wall surface and the second wall surface and the central axis respectively, and the degree of the largest angle formed by the intersection of the two perpendicular lines is the third degree. And it can be understood that the first wall surface and the second wall surface are closest in the other circumferential direction of the valve body 10. At this time, perpendicular lines are formed by the points on the first wall surface and the second wall surface and the central axis respectively, and the degree of the smallest angle formed by the intersection of the two perpendicular lines is the fourth degree. It can be understood that the sum of the third degree and the fourth degree is 360 degrees.

[0062] The degree of the second arc 23b at the edge of the second communication space 22a is the second degree, and the smallest angle between two adjacent channels 11a ( Figure 6The degree of the middle angle C (indicating this minimum included angle) is the fifth degree; the second degree is greater than the fifth degree and less than the third degree. The size of the second communication space 22a is determined by the degree of the second arc 23b, so that the second communication space 22a is in the shape of a sector with a degree greater than the fifth degree and less than the third degree. Furthermore, the second communication space 22a can be connected to at least one channel 11a, and in some states of the multi-way valve, the second communication space 22a can be connected to two adjacent channels 11a. For the two wall surfaces of two adjacent channels 11a that are closest to each other in the circumferential direction of the valve body 10, two perpendicular lines are respectively formed from a point on each of the two wall surfaces to the central axis, and the included angle between the two perpendicular lines is the fifth degree. It can be understood that the sum of the first degree and the second degree is less than or equal to 360 degrees.

[0063] In this way, by setting the degrees of the first arc 23a and the second arc 23b within a certain range, the first communication space 21a and the second communication space 22a can respectively form spaces with different degrees, which is conducive to the first communication space 21a and the second communication space 22a being respectively connected to different channels 11a, facilitating the multi-way valve to achieve different working modes.

[0064] In some specific embodiments, the channels 11a are non-uniformly arranged on the side wall of the valve body 10 along the circumferential direction of the valve body 10. Since the first degree is greater than the fourth degree and less than or equal to the third degree, and the second degree is greater than the fifth degree and less than the third degree, the first communication space 21a and the second communication space 22a can be respectively connected to different channels 11a.

[0065] Please continue to refer to Figure 6 In some specific embodiments, the multi-way valve is a four-way valve, that is to say, the multi-way valve has four channels 11a, and the channels 11a are uniformly arranged on the side wall of the valve body 10 along the circumferential direction of the valve body 10. At this time, a perpendicular line is drawn from a point on the center line of the channel 11a to the central axis, and the included angle between adjacent channels 11a is 90 degrees. In this way, the uniform arrangement of the channels 11a is convenient for the processing of the valve body 10. At the same time, it is also convenient for the valve core 20 to form corresponding first and second communication spaces 21a and 22a to connect different channels 11a.

[0066] Please continue to refer to Figure 6, further, the four channels 11a are the same, so the two channels 11a that are farthest apart are the two channels 11a that are arranged opposite to each other. When two adjacent channels 11a are attached to the wall surface on one side of the circumference of the valve body 10, that is, when the four channels 11a are arranged continuously along the circumference of the valve body 10, they have the largest third degree and the smallest fourth degree, and thus the third degree is less than 270 degrees, and the fourth degree is greater than 90 degrees; when the size of the channel 11a along the circumference of the valve body 10 is the smallest, the fifth degree is the largest, and thus the fifth degree is less than 90 degrees. Therefore, in some specific embodiments, the first degree is greater than or equal to 180 degrees, and less than or equal to 270 degrees; the second degree is greater than the arc degree of the channel 11a along the circumference of the valve body 10, and less than or equal to 90 degrees.

[0067] In some specific embodiments of the present application, the opening of the channel 11a communicating with the outside is arranged at the bottom of the valve body 10 (the bottom of the valve body 10 refers to the side of the valve body 10 away from the valve core 20 along the Z direction), so that the external fluid can enter the channel 11a arranged on the side wall from the bottom opening, and then selectively flow into the first connecting space 21a or the second connecting space 22a, and then flow into other channels 11a to form a flow channel for fluid flow. In this way, the openings communicating with the outside are concentratedly arranged at the bottom of the valve body 10, so that when the multi-way valve is connected to the external components, it is convenient for the external components to communicate with the openings at the same time, thereby facilitating installation; and it is also beneficial to reduce the volume required to form the openings, which is beneficial to saving space.

[0068] In some embodiments, see Figure 1 The multi-way valve further includes a driving member 30, and the valve core 20 further includes a valve core shaft 24. The driving member 30 is drivingly connected to the valve core shaft 24. In this way, the driving member 30 provides power to drive the valve core shaft 24 to rotate, thereby driving the valve core 20 to rotate. It can be understood that the specific form of the driving member 30 is not limited, for example, the driving member 30 can be a motor; for another example, the driving member 30 can also be a pneumatic pressure cylinder.

[0069] In some embodiments, see Figure 1 The multi-way valve further includes an end cover 40, which has a mounting hole 40a. The end cover 40 is disposed along the height direction of the multi-way valve (i.e. Figure 1 The end cap 40 is disposed between the driving member 30 and the valve core 20 (in the middle Z direction), and part of the valve core shaft 24 is passed through the mounting hole 40a. The end cap 40 can seal the accommodating chamber 10a, reduce the probability of fluid flowing out of the accommodating chamber 10a, and also reduce the probability of foreign objects entering the accommodating chamber 10a and affecting the normal operation of the valve core 20.

[0070] Further, the multi-way valve further includes a sealing ring 50. The sealing ring 50 is disposed in the mounting hole 40a and sleeved on the valve core shaft 24. It is recommended to supplement the specific connection method between the sealing ring and the valve core shaft. The sealing ring 50 can block the gap between the mounting hole 40a and the valve core shaft 24 to further seal the accommodation cavity 10a. At the same time, the sealing ring 50 can also play a role in fixing the valve core shaft 24, reducing the amplitude of the shaking of the valve core shaft 24, and buffering the force between the valve core shaft 24 and the hole wall of the mounting hole 40a, which is beneficial to keeping the valve core 20 stable. Specifically, the sealing ring 50 is elastic. The sealing ring 50 is stretched and expanded to be sleeved on the valve core shaft 24, and then through the elasticity of the sealing ring 50 itself, the sealing ring 50 shrinks to abut against the valve core shaft 24, thereby achieving fixation.

[0071] The sealing ring can also be fixed on the inner peripheral wall forming the mounting hole.

[0072] Specifically, the sealing ring 50 is an X-shaped sealing ring. In this way, when the X-shaped sealing ring is sealed, a lubricating cavity can be formed, so that the X-shaped sealing ring has a smaller frictional resistance, reduces the starting resistance when the valve core shaft 24 starts to rotate, and reduces the resistance when the valve core shaft 24 rotates, which is beneficial to the rotation of the valve core shaft 24; and the X-shaped sealing ring has a good sealing effect, which is beneficial to reducing the leakage probability; in addition, the cross-section of the X-shaped sealing ring is a non-circular cross-section, which is beneficial to reducing the probability of the X-shaped sealing ring rolling during movement, can reduce the probability of the X-shaped sealing ring falling off, and is beneficial to keeping the valve core shaft 24 stable during rotation. In some other embodiments of the present application, the sealing ring 50 can also be a K-shaped ring or an O-shaped ring.

[0073] In some specific embodiments of the present application, refer to Figure 1 and Figure 2 , the first wall surface 24a of the first communication space 21a is arranged in an arc shape, and the second wall surface 24b of the second communication space 22a is arranged in an arc shape. Specifically, both the first wall surface 24a and the second wall surface 24b are streamlined to reduce turbulence, and thus reduce the resistance when the fluid contacts the first wall surface 24a and the second wall surface 24b. In this way, when the fluid flows into the first communication space 21a and the second communication space 22a, the turbulence generated when contacting the first wall surface 24a and the second wall surface 24b can be reduced, so that the fluid flows more smoothly in the first communication space 21a and the second communication space 22a, which is beneficial to reducing the probability of fluid leakage and beneficial to extending the service life of the multi-way valve.

[0074] In some other embodiments, the first wall surface 24a or the second wall surface 24b is not arranged in an arc shape. For example, the first wall surface 24a is formed by combining planes, so that the first wall surface 24a forms a stepped wall surface as a whole; the second wall surface 24b is formed by combining planes, so that the second wall surface 24b forms a wedge-shaped wall surface as a whole.

[0075] In some specific embodiments of the present application, refer to Figure 2 , a sealing rib 25 is coated on the edge of the valve core 20 that forms the first communication space 21a and the second communication space 22a. It can be understood that the edge of the valve core 20 that forms the first communication space 21a and the second communication space 22a, that is, the part of the valve core 20 that directly fits and abuts against the valve body 10, is used to seal the gap between the valve core 20 and the valve body 10. In this way, when the valve core 20 is assembled in the valve body 10, through the sealing rib 25 at the edge, the sealing performance of the first communication space 21a and the second communication space 22a can be improved, and the probability of fluid leakage in the first communication space 21a and the second communication space 22a can be reduced. In some specific embodiments, the sealing rib 25 is integrally injection-molded with the valve core 10 to reduce the processing procedures and improve the sealing performance between the sealing rib 25 and the valve core 10, and reduce the liquid leakage probability. In some other specific embodiments, a clamping member is provided at the edge of the valve core 10, and the sealing rib 25 is clamped and matched with the clamping member to be installed on the valve core 10.

[0076] In some embodiments, refer to Figure 1 , the multi-way valve further includes an internal leakage seal 60. The internal leakage seal 60 is arranged between the valve core 20 and the valve body 10 along the radial direction of the valve body 10. The internal leakage seal 60 is fixedly connected to the valve body 10. The internal leakage seal 60 is provided with a communication port 60a corresponding to the channel 11a, so that fluid can enter the first communication space 21a or the second communication space 22a from the communication port 60a of the internal leakage seal 60. In this way, the internal leakage seal 60 can achieve the seal between the valve core 20 and the valve body 10, and reduce the probability of the fluid in the valve core 20 leaking through the gap between the valve core 20 and the valve body 10. In some specific embodiments of the present application, the internal leakage seal 60 and the valve body 10 are fixedly connected by gluing, and the gluing connection is convenient for installation. Further, the internal leakage seal 60 and the valve body 10 are fixedly connected by waterproof glue to improve the waterproof performance of the connection between the internal leakage seal 60 and the valve body 10. In some other embodiments, the internal leakage seal 60 and the valve body 10 are fixedly connected by threaded connection.

[0077] In some embodiments, refer to Figure 1 , the multi-way valve further includes an end face seal 70. The end face seal 70 is arranged at the bottom of the valve body 10. When the multi-way valve is installed and connected to an external component, the end face seal 70 seals the gap generated when the multi-way valve is connected to the external component, so as to improve the sealing performance of the multi-way valve and reduce the probability of fluid leakage.

[0078] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0079] The above-described embodiments merely represent several implementation manners of the present application. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the appended claims.

Claims

1. A multi-way valve, characterized in that: The multi-way valve comprises: A valve body having a receiving cavity, wherein the valve body comprises a plurality of channels, wherein the plurality of channels are arranged at intervals along the circumference of the side wall of the valve body; A valve core, the valve core is rotatably disposed in the accommodating cavity, the valve core comprises a partition, and two sides of the partition respectively form a first communicating space and a second communicating space; The first connecting space and the second connecting space are respectively connected to different channels, the number of channels connected to the first connecting space is a first number, the number of channels connected to the second connecting space is a second number, and the first number is greater than or equal to the second number.

2. The multi-way valve according to claim 1, characterized in that: The multi-way valve is a four-way valve, which includes four channels. The four-way valve includes: In a first state, the first communication space is communicated with three of the four channels, and the second communication space is communicated with another channel; In the second state, the first communicating space is communicated with two of the channels, the second communicating space is communicated with one of the other two channels, and the partition is capable of blocking the other of the other two channels; In the third state, the first communicating space is communicated with two of the channels, and the second communicating space is communicated with the other two channels.

3. The multi-way valve according to claim 1 or 2, characterized in that: The degree of the first arc of the edge of the first connecting space is the first degree, and the degree of the second arc of the edge of the second connecting space is the second degree; the maximum angle between the two channels farthest from each other along the circumference of the valve body is the third degree, the minimum angle is the fourth degree, and the degree of the minimum angle between two adjacent channels is the fifth degree; the first degree is greater than the fourth degree and less than or equal to the third degree, and the second degree is greater than the fifth degree and less than the third degree.

4. The multi-way valve according to claim 3, characterized in that: The multi-way valve further comprises a driving member, and the valve core further comprises a valve core shaft, and the driving member is drivingly connected to the valve core shaft.

5. The multi-way valve according to claim 4, characterized in that: The multi-way valve further comprises an end cover having a mounting hole. The end cover is arranged between the driving member and the valve core along the height direction of the multi-way valve, and a portion of the valve core shaft is passed through the mounting hole.

6. The multi-way valve according to claim 5, characterized in that: The multi-way valve further comprises a sealing ring, which is sleeved on the valve core shaft and abuts against the hole wall of the mounting hole.

7. The multi-way valve according to claim 6, characterized in that: The side surface of the partition forming the first connecting space is a first wall surface, and the first wall surface is arranged in an arc shape. The side surface of the partition forming the second connecting space is a second wall surface, and the second wall surface is arranged in an arc shape.

8. The multi-way valve according to claim 1 or 7, characterized in that: The edges of the valve core forming the first communicating space and the second communicating space are covered with sealing ribs.

9. The multi-way valve according to claim 8, characterized in that: The multi-way valve further comprises an inner leakage seal, which is arranged between the valve core and the valve body along the radial direction of the valve body, the inner leakage seal is fixedly connected to the valve body, and the inner leakage seal is provided with a communication port corresponding to the channel.

10. The multi-way valve according to claim 9, characterized in that: The multi-way valve further comprises an end face seal, which is arranged at the bottom of the valve body and is used to seal the gap when the valve body is connected to an external component.

Images