A multi-way valve capable of proportional adjustment

Abstract

The present invention discloses a multi-way valve capable of proportional adjustment, comprising a valve housing, a valve core and a sealing gasket, wherein the valve housing has a valve cavity, a bottom wall along the axial direction, a valve port connected to the valve cavity is provided on the bottom wall, the valve port comprises a central valve port and a plurality of peripheral valve ports arranged around it, the valve core is rotatably arranged in the valve cavity, the valve core and the bottom wall are sealed by a sealing gasket, a through port is provided at the sealing gasket corresponding to the valve port, a plurality of flow channels which are not connected to each other are provided in the valve core, the flow channels are connected to the outside on the side of the valve core facing the sealing gasket, the valve core can rotate between multiple positions, one of the flow channels can be respectively connected to the central valve port and one of the peripheral valve ports, and each of the remaining flow channels can be connected to at least one of the remaining peripheral valve ports. The present application realizes that the multi-way valve has a proportional adjustment function by designing the flow channels and valve ports, so that there is no need to install a proportional control valve in the circuit, the system has a high degree of integration, and the control difficulty and cost are reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of control valves, and in particular to a multi-way valve capable of performing proportional adjustment. Background Art

[0002] With the continuous development of new energy vehicles, the entire thermal management circuit of new energy vehicles has become increasingly large and complex, and the control requirements for the entire fluid circuit have become increasingly higher. Faced with the problem of on-off control of multiple circuits, various forms of multi-way valves have begun to appear on the market, and multi-way valves are used to achieve the flow or disconnection of corresponding multiple circuits in different modes.

[0003] However, the multi-way valves currently on the market only have the function of mode switching and cannot achieve proportional adjustment. They usually need to be paired with proportional control valves to control the flow of one or several circuits, which increases the number of valves, costs and control difficulty.

[0004] Therefore, in view of the above-mentioned technical problems, it is necessary to make new innovations. Summary of the Invention

[0005] The purpose of this invention is to address the deficiencies in the prior art by designing the flow path and valve port to enable a multi-way valve to have a proportional adjustment function, eliminating the need for a proportional control valve in the circuit, improving the system's integration, and reducing control difficulty and cost. The specific solution is as follows:

[0006] The closure of the valve core is fixed with the closure of the valve body, and the closure of the valve body is fixed with the closure of the valve body to form a cam which is connected with the closure of the valve body.

[0007] Furthermore, the main body of the valve core is disc-shaped, the flow channel is arranged in the main body, the flow channel has an inlet and an outlet, and the inlet and the outlet are connected to the outside on the same side of the main body facing the sealing gasket.

[0008] Furthermore, the main body of the valve core has an inner cavity, and the side of the valve core facing the sealing gasket has an opening connected to the inner cavity, and a central partition and multiple scattering partitions are arranged in the inner cavity, the central partition is annular, and the scattering partitions are fixedly connected to the central partition and the bottom wall of the inner cavity respectively, and the central partition and the multiple scattering partitions divide the inner cavity into a central chamber respectively connected to the opening and a plurality of outer edge chambers arranged around the central chamber, the central chamber is connected to one of the outer edge chambers to form a flow channel, and the remaining outer edge chambers respectively form the remaining flow channels.

[0009] Furthermore, the valve port includes 2n outer edge valve ports, n+1 flow channels are provided in the valve core, and n+1 scattering baffles are provided in the inner cavity, wherein n is an integer greater than 1.

[0010] Furthermore, the outer edge valve port has two side edges along the circumferential direction of the shell, and the extension lines of the two side edges intersect at the axis of the shell.

[0011] Furthermore, the outer edge valve opening is fan-shaped.

[0012] Furthermore, n first outer edge valve ports and n second outer edge valve ports are provided on the bottom wall, and the symmetry axes of the n first outer edge valve ports and the symmetry axes of the n second outer edge valve ports are alternately distributed at equal angles around the central valve port, and the angle between the two side edges of the first outer edge valve port is greater than the angle between the two side edges of the second outer edge valve port.

[0013] Furthermore, n is 2.

[0014] Furthermore, a limiting structure capable of limiting the rotation of the valve core is provided between the valve core and the valve housing.

[0015] Furthermore, the limiting structure includes a first limiting protrusion and a second limiting protrusion, the first limiting protrusion is arranged on the side of the valve core away from the sealing gasket, and the second limiting protrusion is arranged on the inner wall of the valve cavity corresponding to the first limiting protrusion, and the second limiting protrusion can limit the first limiting protrusion in the rotation direction of the valve core.

[0016] Furthermore, it also includes a driving component, and a rotating shaft structure is provided on the side of the valve core facing away from the sealing gasket. The rotating shaft structure is coaxially arranged with the valve core, and the rotating shaft structure passes through the valve housing. The rotating shaft structure can be driven by the driving component to drive the valve core to rotate.

[0017] Furthermore, a sealing ring is provided between the rotating shaft structure and the valve housing.

[0018] Furthermore, a sealing ring gasket is provided on the side of the bottom wall away from the sealing gasket, and the sealing ring gasket includes an outer ring portion, an inner ring portion and a support portion connected between the inner ring portion and the outer ring portion, the outer ring portion is arranged on the periphery of all outer edge valve ports, the inner ring portion is arranged on the periphery of the central valve port, and the support portion is arranged between two adjacent outer edge valve ports.

[0019] Compared with the prior art, the proportionally adjustable multi-way valve of the present invention has at least one or more of the following beneficial effects:

[0020] The multi-way valve capable of proportional adjustment in the present application realizes the proportional adjustment function of the multi-way valve by cooperating with the valve core and the valve housing, so that no other proportional control valves need to be installed in the circuit, thereby improving the integration level of the system and reducing the control difficulty and cost;

[0021] The multi-way valve of the present application can be proportionally adjusted, and all valve ports are located at the bottom end of the valve housing. No valve ports are provided on the circumferential surface of the valve housing, which fully utilizes the bottom end area of ​​the valve housing and does not occupy the circumferential space of the multi-way valve. Under the same flow requirement, the multi-way valve structure of the present application can be smaller and more compact, and can be applied to narrow installation spaces.

[0022] The valve ports of traditional multi-way valves are generally arranged on the side, or partially on the side and partially on the bottom. Therefore, the sealing surface is required to be cylindrical or spherical, and corresponding seals are respectively provided on the side and bottom surfaces. Therefore, most seals need to adopt special-shaped seals, which have a large number of seals, high complexity, high cost and high risk of failure. The multi-way valve of the present application that can be proportionally adjusted has a groove at the bottom end of the valve core to form a flow channel, and the inlet and outlet of the flow channel are all located on the same end face, so that only one flat seal is needed to seal the valve core and all the valve ports. Compared with the traditional multi-way valve, the use of special-shaped seals can be avoided, the number of seals is reduced, the structure is simple, the risk of failure is small, the sealing performance can be effectively improved, and the volume of the entire multi-way valve can be effectively reduced, saving space and materials.

[0023] The multi-way valve of the present application can be proportionally adjusted, and its flow channel is formed by slotting the bottom end of the valve core. The flow channel is unobstructed, the processing is simpler, the cost is lower, and the multi-way valve is lightweight.

[0024] The multi-way valve of the present application can perform proportional adjustment, and its valve port for proportional adjustment is set to a wider angle, and the flow channel in the valve core is divided into a plate shape, thereby improving the accuracy of proportional adjustment and reducing flow resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 and Figure 2 They are respectively schematic diagrams of the three-dimensional structure of the five-way valve provided in the embodiments of the present application;

[0026] Figure 3 A schematic diagram of the exploded structure of a five-way valve provided in an embodiment of the present application;

[0027] Figure 4 A schematic cross-sectional view of a five-way valve according to an embodiment of the present invention;

[0028] Figure 5 A schematic diagram of the three-dimensional structure of a five-way valve housing provided in an embodiment of the present application;

[0029] Figure 6 and Figure 7 They are schematic diagrams of the three-dimensional structure of the five-way valve core provided in the embodiments of the present application;

[0030] Figure 8 A schematic diagram of the cross-sectional structure of the five-way valve provided in an embodiment of the present application in a top view in mode 1;

[0031] Figure 9 A schematic diagram of the cross-sectional structure of the five-way valve provided in an embodiment of the present application in a top view in mode 2;

[0032] Figure 10 A schematic diagram of the cross-sectional structure of the five-way valve provided in an embodiment of the present application in a top view in mode three;

[0033] Figure 11 A schematic diagram of the cross-sectional structure of the five-way valve provided in an embodiment of the present application in a top view in mode 4;

[0034] Figure 12 A schematic diagram of the cross-sectional structure of the five-way valve provided in an embodiment of the present application in a top view in mode five;

[0035] Figure 13 This is a schematic diagram of the cross-sectional structure of the five-way valve provided in an embodiment of the present application when viewed from above in mode six.

[0036] Among them, 1-valve housing, 11-housing, 111-bottom wall, 112-central valve port, 113-outer valve port, 114-first outer valve port, 1141-first valve port, 1142-third valve port, 115-second outer valve port, 1151-second valve port, 1152-fourth valve port, 116-flange, 117-installation groove, 118-fixing ear, 12-cover, 121-convex ring, 122-groove, 123-annular groove, 2-valve core, 21-flow channel, 211-first First flow channel, 212-second flow channel, 213-third flow channel, 22-central partition, 23-scattering partition, 231-first scattering partition, 232-second scattering partition, 233-third scattering partition, 24-limiting structure, 241-first limiting protrusion, 25-rotating shaft structure, 251-limiting convex ring structure, 252-stop surface, 3-sealing gasket, 31-through port, 4-driving component, 5-sealing ring, 6-sealing ring gasket, 61-outer ring portion, 62-inner ring portion, 63-support portion. DETAILED DESCRIPTION

[0037] In order to further illustrate the technical means and effects adopted by the present invention to achieve the predetermined purpose of the invention, the specific implementation methods, structures, features and effects of the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0038] Example

[0039] This embodiment provides a proportionally adjustable multi-way valve, which includes a valve housing 1 , a valve core 2 and a sealing gasket 3 .

[0040] The valve housing 1 has a valve cavity, and the valve housing 1 has a bottom wall 111 along the axial direction. The bottom wall 111 is provided with a valve port communicating with the valve cavity. The valve port includes a central valve port 112 and a plurality of peripheral valve ports 113 arranged around the central valve port 112. Preferably, 2n peripheral valve ports 113 are provided. Next, the technical solution will be further described by taking a five-way valve structure as an example. In a five-way valve, n is 2, and the valve port includes a central valve port 112 and four peripheral valve ports 113. Figures 1 to 3 However, it should be noted that the number of valve ports of the multi-way valve in this embodiment is not limited to five, but can be any other number, for example, n is 3, constituting a seven-way valve; or n is 4, constituting a nine-way valve, etc.

[0041] Figure 3 As schematically shown in FIG, the valve housing 1 is preferably composed of a shell 11 and a cover 12. A receiving cavity is formed in the shell 11, and an inlet communicating with the receiving cavity is formed at one end side of the shell 11 in the axial direction. The cover 12 is covered at the inlet and fixedly connected to the shell 11. Figure 4As shown. The fixing method between the cover body 12 and the shell 11 can be in various forms, such as welding, gluing or other methods. The chamber formed between the cover body 12 and the shell 11 constitutes the valve chamber. The other end side of the shell 11 away from the insertion port constitutes the bottom wall 111. The central valve port 112 is preferably circular; the shape of the outer edge valve port 113 is preferably fan-shaped. The outer edge valve port 113 adopts a fan-shaped design, which has the advantages of high proportional adjustment accuracy and high linearity when adjusting the proportion. As shown Figure 5 As shown, the symmetry axes of the four outer valve ports 113 are distributed at equal angles around the central valve port 112, and the short arc side of each outer valve port 113 faces the central valve port 112, with the extension lines of the side edges intersecting the axis of the housing 11. Of course, the above is only a preferred embodiment. In specific implementations, the shape of the central valve port 112 is not limited to a circle, and can be any other shape, such as a triangle or a quadrilateral. The shape of the outer valve port 113 is also not limited to a fan shape. Preferably, it has two side edges along the circumference of the housing 11, and the extension lines of the two side edges intersect at the axis of the housing 11.

[0042] The four outer edge valve ports 113 include two first outer edge valve ports 114 and two second outer edge valve ports 115. The symmetry axes of the two first outer edge valve ports 114 and the symmetry axes of the two second outer edge valve ports 115 are alternately distributed at equal angles around the central valve port 112, and the angle between the two sides of the first outer edge valve ports 114 is greater than the angle between the two sides of the second outer edge valve ports 115. Figure 5 shown.

[0043] The valve core 2 is rotatably arranged in the valve cavity, and the direction of the valve core 2 axis is consistent with the axis direction of the valve housing 1. The valve core 2 and the bottom wall 111 are sealed by the sealing gasket 3, and the sealing gasket 3 is provided with a through hole 31 corresponding to the valve port. Figure 5 As shown in the figure, a preferred solution is schematically shown, wherein the bottom wall 111 extends inwardly at the edge of the valve port to form a flange 116. Each opening 31 on the sealing gasket 3 is sleeved on the flange 116 at the corresponding valve port, and the sealing gasket 3 is slightly higher than the flange 116. Figure 4 shown.

[0044] The valve core 2 is provided with three mutually disconnected flow channels 21, and the flow channels 21 are connected to the outside on the side of the valve core 2 facing the sealing gasket 3. The main body of the valve core 2 is preferably disc-shaped, and the flow channels 21 are provided in the main body. The flow channels 21 have an inlet and an outlet, and the inlet and the outlet are connected to the outside on the same side of the main body facing the sealing gasket 3. Figure 6 and Figure 7As shown in the figure, a preferred solution is schematically shown, the main body of the valve core 2 has an inner cavity, and the side of the valve core 2 facing the sealing gasket 3 has an opening connected to the inner cavity. A central partition 22 and three scattering partitions 23 are arranged in the inner cavity. The central partition 22 is annular, and the scattering partitions 23 are scattered, that is, they pass through the axis of the valve core 2. The three scattering partitions 23 are fixedly connected to the central partition 22 and the side walls of the inner cavity respectively. The central partition 22 and the three scattering partitions 23 divide the inner cavity into a central chamber connected to the openings respectively and three outer edge chambers arranged around the central chamber. The central chamber is connected to one of the outer edge chambers to form a flow channel 21. As shown Figure 7 As shown in the figure, a preferred solution is schematically shown, wherein the central partition 22 is provided with a notch corresponding to the outer chamber, i.e., the central partition 22 is C-shaped, thereby achieving communication between the central chamber and the corresponding outer chamber. The remaining outer chambers respectively form the remaining flow channels 21.

[0045] The valve core 2 can be driven to rotate between multiple positions, and one of the flow channels 21 can be connected to the central valve port 112 and one of the outer valve ports 113 respectively, and each of the remaining flow channels 21 can be connected to at least one of the remaining outer valve ports 113. Figure 6 As shown, a shaft structure 25 is provided on the side of the valve core 2 facing away from the sealing gasket 3, and the shaft structure 25 is coaxially arranged with the valve core 2. The shaft structure 25 passes through the valve housing 1, that is, a through hole is opened on the cover body 12 corresponding to the shaft structure 25, and the shaft structure 25 passes through the cover body 12 through the through opening 31. In order to ensure the airtightness of the valve housing 1, it is preferred to provide a sealing ring 5 between the shaft structure 25 and the cover body 12. For example, a limiting convex ring structure 251 can be provided on the outer wall of the shaft structure 25, and then a stop surface 252 is formed on the circumferential wall of the shaft structure 25. During assembly, the sealing ring 5 is sleeved on the shaft structure 25, and the stop surface 252 can tightly abut the sealing ring 5 against the inner wall of the cover body 12, thereby achieving sealing. As Figure 4As shown, the figure schematically shows a preferred solution, wherein the limiting convex ring structure 251 is provided at the connection between the rotating shaft structure 25 and the main body of the valve core 2, and a convex ring 121 is provided on the inner wall of the cover body 12 corresponding to the rotating shaft structure 25, and a groove 122 is formed in the convex ring 121, and the through hole is provided at the bottom of the groove 122 and communicates with the groove 122, and the size of the groove 122 matches the size of the limiting convex ring structure 251, and the size of the groove 122 is larger than the size of the through hole. During assembly, the limiting convex ring structure 251 is located in the groove 122, and the stop surface 252 tightly abuts the sealing ring 5 against the bottom of the groove 122 to achieve sealing, while the inner wall of the groove 122 can limit the limiting convex ring structure 251, thereby ensuring that the valve core 2 can rotate more stably.

[0046] Preferably, the end of the rotating shaft structure 25 is configured as a gear, and the length direction of the teeth is consistent with the axial direction of the rotating shaft structure 25, thereby ensuring that it can be connected to the driving component 4 after assembly, thereby realizing the valve core 2 being driven by the driving component 4 to rotate. The driving component 4 can be, for example, an actuator, such as Figure 1 or Figure 4 As shown, it is fixed to the valve housing 1, such as the cover 12. The actuator's drive spindle is sleeved on the rotating shaft structure 25 to drive the valve core 2 to rotate. It should be noted that the actuator is an existing product, and its specific structure is not the focus of this application. Therefore, the specific structure of the actuator is not described in detail in this embodiment. Of course, the drive component 4 is not limited to an actuator and can also be any other drive structure.

[0047] A limiting structure 24 capable of limiting the rotation of the valve core 2 is provided between the valve core 2 and the valve housing 1. The limiting structure 24 preferably includes a first limiting protrusion 241 and a second limiting protrusion, and the first limiting protrusion 241 is provided on the side of the valve core 2 away from the sealing gasket 3. Figure 3 or Figure 6 The second limiting protrusion is provided on the inner wall of the valve cavity corresponding to the first limiting protrusion 241, that is, on the inner wall of the cover body 12, as shown. Figure 4As shown in the figure, an annular groove 123 is provided on the inner wall of the cover body 12, and the second limiting protrusion (not shown) is located in the annular groove 123. When the multi-way valve is assembled, the first limiting protrusion 241 extends into the annular groove 123. Along the circumferential direction of the valve core 2, one side of the first limiting protrusion 241 can abut against one side of the second limiting protrusion. After the valve core 2 rotates a certain angle, the other side of the first limiting protrusion 241 can abut against the other side of the second limiting protrusion, thereby realizing that the second limiting protrusion limits the first limiting protrusion 241 in the rotation direction of the valve core 2, ensuring that the valve core 2 can only rotate within a preset angle range, preventing it from rotating excessively, and facilitating the positioning of the actuator.

[0048] In a further embodiment, a sealing ring gasket 6 is provided on the side of the bottom wall 111 facing away from the sealing gasket 3. The sealing ring gasket 6 includes an outer ring portion 61, an inner ring portion 62, and a support portion 63 connected between the inner ring portion 62 and the outer ring portion 61. The outer ring portion 61 is provided on the periphery of all the outer valve ports 113, the inner ring portion 62 is provided on the periphery of the central valve port 112, and the support portion 63 is provided between two adjacent outer valve ports 113. Figure 2 As shown, it is preferred that a mounting groove 117 having a shape matching that of the sealing ring gasket 6 is provided on the side of the bottom wall 111 away from the sealing gasket 3, and the sealing ring gasket 6 is embedded in the mounting groove 117, and the sealing ring gasket 6 protrudes from the mounting groove 117, as shown in FIG. Figure 4 When the multi-way valve is fixedly mounted on the surface to be mounted, the sealing ring 6 can achieve a seal between the valve housing 1 and the surface to be mounted. The multi-way valve can be fixed in various ways, such as Figure 5 As shown in the figure, a plurality of fixing ears 118 are provided on the periphery of the housing 11 near the sealing gasket 6, and each of the fixing ears 118 is provided with a fixing hole. During installation, the valve housing 1 can be fixedly connected to the surface to be installed by fasteners such as screws through the fixing holes.

[0049] Next, combine Figures 8 to 13 The working principle of the above five-way valve is further explained as follows:

[0050] The three scattering baffles 23 are defined in sequence as the first scattering baffle 231, the second scattering baffle 232, and the third scattering baffle 233; the four outer edge valve ports 113 are defined as the first valve port 1141, the second valve port 1151, the third valve port 1142, and the fourth valve port 1152; the flow channel 21 formed between the first scattering baffle 231, the central baffle 22, and the second scattering baffle 232 is defined as the first flow channel 211; the flow channel 21 formed between the second scattering baffle 232, the central baffle 22, and the third scattering baffle 233 is defined as the second flow channel 212; and the flow channel 21 formed between the third scattering baffle 233, the central baffle 22, and the first scattering baffle 231 is defined as the third flow channel 213. It should be noted that, to better illustrate the technical solution, the thickness of the baffles themselves is not considered in this embodiment. However, in actual implementation, the angle between the two sides of each outer edge valve port 113 can be adaptively adjusted based on the specific thickness of the baffles.

[0051] Taking the angle between the two sides of the first outer edge valve port 114 as 48° as an example, the angle between the two sides of the second outer edge valve port 115 is 36°, the angle between the first scattering baffle 231 and the second scattering baffle 232 is 96°, and the angles between the third scattering baffle 233 and the first scattering baffle 231 and the second scattering baffle 232 are 132° respectively.

[0052] Assume that the valve core 2 rotates to Figure 8 The position shown is Mode 1, in which the first valve port 1141 is located between the first scattering baffle 231 and the second scattering baffle 232, the second valve port 1151 and the third valve port 1142 are located between the second scattering baffle 232 and the third scattering baffle 233, respectively, and the fourth valve port 1152 is located between the first scattering baffle 231 and the third scattering baffle 233. The first flow channel 211 connects the first valve port 1141 and the central valve port 112, the second flow channel 212 connects the second valve port 1151 and the third valve port 1142, and the third flow channel 213 connects the fourth valve port 1152.

[0053] When the valve core 2 rotates 0-48 degrees counterclockwise, the valve core 2 is in Figure 9The position shown in FIG2 is defined as the second mode position. At this time, the first valve port 1141 is located between the first scattering baffle 231 and the second scattering baffle 232, the second valve port 1151 is located between the second scattering baffle 232 and the third scattering baffle 233, and the fourth valve port 1152 is located between the first scattering baffle 231 and the third scattering baffle 233. The third scattering baffle 233 divides the third valve port 1142 into two parts. The first flow channel 211 connects the first valve port 1141 and the central valve port 112, the second flow channel 212 connects the second valve port 1151 and the third valve port 1142, and the third flow channel 213 connects the third valve port 1142 and the fourth valve port 1152. By adjusting the rotation angle of the valve core 2, the separation position of the third scattering partition 233 at the third valve port 1142 can be adjusted, thereby controlling the flow ratio between the third valve port 1142 and the second valve port 1151 and the fourth valve port 1152 to achieve proportional regulation.

[0054] When the valve core 2 rotates 48° counterclockwise to Figure 10 The position shown in FIG3 is defined as the mode 3 position. In this position, the first valve port 1141 is located between the first scattering baffle 231 and the second scattering baffle 232, the second valve port 1151 is located between the second scattering baffle 232 and the third scattering baffle 233, and the third valve port 1142 and the fourth valve port 1152 are respectively located between the first scattering baffle 231 and the third scattering baffle 233. The first flow channel 211 connects the first valve port 1141 and the central valve port 112, the second flow channel 212 connects the second valve port 1151, and the third flow channel 213 connects the third valve port 1142 and the fourth valve port 1152.

[0055] When the valve core 2 rotates 180° counterclockwise to Figure 11 The position shown in FIG. 1 is defined as the fourth mode position. In this position, the first valve port 1141 and the fourth valve port 1152 are respectively located between the second scattering baffle 232 and the third scattering baffle 233. The second valve port 1151 is located between the first scattering baffle 231 and the third scattering baffle 233. The third valve port 1142 is located between the first scattering baffle 231 and the second scattering baffle 232. The first flow channel 211 connects the third valve port 1142 and the central valve port 112. The second flow channel 212 connects the first valve port 1141 and the fourth valve port 1152. The third flow channel 213 connects the second valve port 1151.

[0056] When the valve core 2 rotates counterclockwise 180-228 degrees, the valve core 2 is in Figure 12The position shown in FIG5 is defined as mode five. In this position, the third scattering baffle 233 divides the first valve port 1141 into two parts. The second valve port 1151 is located between the first scattering baffle 231 and the third scattering baffle 233. The third valve port 1142 is located between the first scattering baffle 231 and the second scattering baffle 232. The fourth valve port 1152 is located between the second scattering baffle 232 and the third scattering baffle 233. The first flow channel 211 connects the third valve port 1142 and the central valve port 112. The second flow channel 212 connects the first valve port 1141 and the fourth valve port 1152. The third flow channel 213 connects the first valve port 1141 and the second valve port 1151. By adjusting the rotation angle of the valve core 2, the separation position of the third scattering baffle 233 at the first valve port 1141 can be adjusted, thereby controlling the flow ratio between the first valve port 1141 and the second valve port 1151 and the fourth valve port 1152 to achieve proportional regulation.

[0057] When the valve core 2 continues to rotate counterclockwise 228° to Figure 13 The position shown in FIG. 1 is defined as mode 6. At this time, the first valve port 1141 and the second valve port 1151 are respectively located between the first scattering baffle 231 and the third scattering baffle 233. The third valve port 1142 is located between the first scattering baffle 231 and the second scattering baffle 232. The fourth valve port 1152 is located between the second scattering baffle 232 and the third scattering baffle 233. The first flow channel 211 connects the third valve port 1142 and the central valve port 112. The second flow channel 212 connects the fourth valve port 1152. The third flow channel 213 connects the first valve port 1141 and the second valve port 1151.

[0058] Compared with the prior art, the proportionally adjustable multi-way valve of the present invention has at least one or more of the following beneficial effects:

[0059] The multi-way valve capable of proportional adjustment in the present application realizes the proportional adjustment function of the multi-way valve by cooperating with the valve core and the valve housing, so that no other proportional control valves need to be installed in the circuit, thereby improving the integration level of the system and reducing the control difficulty and cost;

[0060] The multi-way valve of the present application can be proportionally adjusted, and all valve ports are located at the bottom end of the valve housing. No valve ports are provided on the circumferential surface of the valve housing, which fully utilizes the bottom end area of ​​the valve housing and does not occupy the circumferential space of the multi-way valve. Under the same flow requirement, the multi-way valve structure of the present application can be smaller and more compact, and can be applied to narrow installation spaces.

[0061] The valve ports of traditional multi-way valves are generally arranged on the side, or partially on the side and partially on the bottom. Therefore, the sealing surface is required to be cylindrical or spherical, and corresponding seals are respectively provided on the side and bottom surfaces. Therefore, most seals need to adopt special-shaped seals, which have a large number of seals, high complexity, high cost and high risk of failure. The multi-way valve of the present application that can be proportionally adjusted has a groove at the bottom end of the valve core to form a flow channel, and the inlet and outlet of the flow channel are all located on the same end face, so that only one flat seal is needed to seal the valve core and all the valve ports. Compared with the traditional multi-way valve, the use of special-shaped seals can be avoided, the number of seals is reduced, the structure is simple, the risk of failure is small, the sealing performance can be effectively improved, and the volume of the entire multi-way valve can be effectively reduced, saving space and materials.

[0062] The multi-way valve of the present application can be proportionally adjusted, and its flow channel is formed by slotting the bottom end of the valve core. The flow channel is unobstructed, the processing is simpler, the cost is lower, and the multi-way valve is lightweight.

[0063] The multi-way valve of the present application can perform proportional adjustment, and its valve port for proportional adjustment is set to a wider angle, and the flow channel in the valve core is divided into a plate shape, thereby improving the accuracy of proportional adjustment and reducing flow resistance.

[0064] As used herein, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion of elements other than the listed elements and may also include additional elements not specifically listed.

[0065] In this document, directional terms such as front, back, top, and bottom are defined based on the positions of components in the accompanying drawings and relative to each other, and are intended only for clarity and convenience in describing the technical solution. It should be understood that the use of these directional terms should not limit the scope of protection claimed in this application.

[0066] In the absence of conflict, the above embodiments and features in the embodiments may be combined with each other.

[0067] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A multi-way valve capable of proportional adjustment, characterized in that: It comprises a valve housing (1), a valve core (2) and a sealing gasket (3), wherein the valve housing (1) has a valve cavity. The valve housing (1) has a bottom wall (111) along the axial direction, and a valve port communicating with the valve cavity is provided on the bottom wall (111), and the valve port includes a central valve port (112) and a plurality of peripheral valve ports (113) arranged around the central valve port (112). The valve core (2) is rotatably arranged in the valve cavity, and the direction of the rotation axis of the valve core (2) is consistent with the axial direction of the valve housing (1). The valve core (2) and the bottom wall (111) are sealed by the sealing gasket (3), and the sealing gasket (3) is provided with a through hole (31) corresponding to the valve port. The valve core (2) is provided with a plurality of mutually unconnected flow channels (21), the flow channels (21) being connected to the outside on a side of the valve core (2) facing the sealing gasket (3), the valve core (2) being driven to rotate between a plurality of positions, one of the flow channels (21) being respectively connected to the central valve port (112) and one of the outer valve ports (113), and each of the remaining flow channels (21) being at least connected to one of the remaining outer valve ports (113); The main body of the valve core (2) is disc-shaped, the flow channel (21) is arranged in the main body, the flow channel (21) has an inlet and an outlet, and the inlet and the outlet are connected to the outside on the same side of the main body facing the sealing gasket (3); The main body of the valve core (2) has an inner cavity, and the side of the valve core (2) facing the sealing gasket (3) has an opening connected to the inner cavity. A central partition (22) and a plurality of scattering partitions (23) are provided in the inner cavity. The central partition (22) is annular, and the scattering partitions (23) are fixedly connected to the central partition (22) and the bottom wall (111) of the inner cavity respectively. The central partition (22) and the plurality of scattering partitions (23) divide the inner cavity into a central cavity connected to the opening respectively and a plurality of outer edge cavities arranged around the central cavity. The central cavity is connected to one of the outer edge cavities to form a flow channel (21), and the remaining outer edge cavities respectively form the remaining flow channels (21). The valve port includes 2n outer edge valve ports (113), n+1 flow channels (21) are provided in the valve core (2), and n+1 scattering baffles (23) are provided in the inner cavity, wherein n is an integer greater than 1; It also includes a driving component (4), and a rotating shaft structure (25) is provided on the side of the valve core (2) facing away from the sealing gasket (3). The rotating shaft structure (25) is coaxially arranged with the valve core (2), and the rotating shaft structure (25) passes through the valve housing (1). The rotating shaft structure (25) can be driven by the driving component (4) to drive the valve core (2) to rotate.

2. The proportionally adjustable multi-way valve according to claim 1, characterized in that: The valve housing (1) has a shell (11), and the outer edge valve port (113) has two side edges along the circumferential direction of the shell (11), and the extension lines of the two side edges intersect at the axis of the shell (11).

3. The proportionally adjustable multi-way valve according to claim 2, characterized in that: The outer edge valve opening (113) is fan-shaped.

4. The proportionally adjustable multi-way valve according to claim 2, characterized in that: The bottom wall (111) is provided with n first outer edge valve ports (114) and n second outer edge valve ports (115), and the symmetry axes of the n first outer edge valve ports (114) and the symmetry axes of the n second outer edge valve ports (115) are alternately distributed at equal angles around the central valve port (112), and the angle between the two side edges of the first outer edge valve port (114) is greater than the angle between the two side edges of the second outer edge valve port (115).

5. The proportionally adjustable multi-way valve according to claim 4, characterized in that: n is 2.

6. The proportionally adjustable multi-way valve according to claim 1, characterized in that: A limiting structure (24) capable of limiting the rotation of the valve core (2) is provided between the valve core (2) and the valve housing (1).

7. The proportionally adjustable multi-way valve according to claim 6, characterized in that: The limiting structure (24) comprises a first limiting protrusion (241) and a second limiting protrusion, wherein the first limiting protrusion (241) is arranged on a side of the valve core (2) away from the sealing gasket (3), and the second limiting protrusion is arranged on an inner wall corresponding to the first limiting protrusion (241) in the valve cavity, and the second limiting protrusion can limit the first limiting protrusion (241) in the rotation direction of the valve core (2).

8. The proportionally adjustable multi-way valve according to claim 1, characterized in that: A sealing ring (5) is provided between the rotating shaft structure (25) and the valve housing (1).

9. The proportionally adjustable multi-way valve according to claim 1, characterized in that: A sealing ring gasket (6) is provided on the side of the bottom wall (111) facing away from the sealing gasket (3), and the sealing ring gasket (6) includes an outer ring portion (61), an inner ring portion (62) and a support portion (63) connected between the inner ring portion (62) and the outer ring portion (61), the outer ring portion (61) is provided on the periphery of all outer edge valve ports (113), the inner ring portion (62) is provided on the periphery of the central valve port (112), and the support portion (63) is provided between two adjacent outer edge valve ports (113).

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