CN219755422U - Multi-way valve capable of being proportionally adjusted - Google Patents

Abstract

The utility model discloses a multi-way valve capable of being proportionally adjusted, which comprises a valve casing, a valve core and a sealing gasket, wherein the valve casing is provided with a valve cavity, the valve casing is provided with a bottom wall along the axial direction, the bottom wall is provided with a valve port communicated with the valve cavity, the valve port comprises a central valve port and a plurality of outer edge valve ports arranged around the central valve port, the valve core is rotatably arranged in the valve cavity, the valve core and the bottom wall are sealed through the sealing gasket, a port is arranged at the position corresponding to the valve port, a plurality of flow passages which are not communicated with each other are arranged in the valve core, the flow passages are communicated with the outside at one side of the valve core facing the sealing gasket, the valve core can rotate among a plurality of transposition positions, one flow passage can be respectively communicated with the central valve port and one of the outer edge valve ports, and each flow passage at least can be communicated with one of the other outer edge valve ports. The utility model realizes that the multi-way valve has a proportion adjusting function by designing the flow channel and the valve port, so that the proportion adjusting valve is not required to be installed in the loop, the system integration degree is high, and the control difficulty and the cost are reduced.

Description

Multi-way valve capable of being proportionally adjusted

Technical Field

The utility model relates to the technical field of control valves, in particular to a multi-way valve capable of performing proportional adjustment.

Background

With the continuous development of new energy automobiles, the whole thermal management loop of the new energy automobile is huge and complex, the control requirement on the whole fluid loop is higher and higher, various multi-way valves are started to appear on the market in the face of the on-off control problem of the multi-loop, and the corresponding multi-loop circulation or disconnection under different modes is realized through the multi-way valves.

However, the multi-way valves in the market at present only have the mode switching function, cannot realize proportional adjustment, generally need to be matched with a proportional adjusting valve to realize the control of certain or a plurality of loop flows, increase the number of the valves and improve the cost and the control difficulty.

Therefore, in combination with the above-mentioned technical problems, new innovations are necessary.

Disclosure of Invention

The utility model aims to solve the defects in the prior art, and realizes the function of proportional adjustment of the multi-way valve by designing the flow channel and the valve port, so that a proportional adjusting valve is not required to be installed in a loop, the integration degree of the system is improved, and the control difficulty and the cost are reduced. The specific scheme is as follows:

the utility model provides a but carry out multiport valve of proportion adjustment, its includes valve casing, case and sealing pad, the valve casing has the valve pocket, the valve casing has the diapire along the axis direction, be provided with on the diapire with the valve pocket intercommunication's valve port, the valve port includes central valve port and encircles a plurality of outer fringe valve ports that central valve port set up, the rotatable setting of case is in the valve pocket, the direction of case pivot is unanimous with the axis direction of valve casing, the case with seal pad seals between the diapire, sealing pad corresponds valve port department is provided with the opening, be provided with a plurality of runners that do not communicate each other in the case, the runner is in case orientation one side and outside intercommunication of sealing pad, the case can be driven and rotate between a plurality of transposition, one of them runner can communicate respectively with central valve port and one of them outer fringe valve port, and every runner of others can communicate with one of other outer fringe valve ports at least.

Further, the main body of the valve core is disc-shaped, the flow passage is arranged in the main body, the flow passage is provided with an inlet and an outlet, and the inlet and the outlet are communicated with the outside on the same side of the main body facing the sealing gasket.

Further, the main body of case has the inner chamber, the case orientation one side of sealed pad have with the opening of inner chamber intercommunication, be provided with central baffle and a plurality of scattering baffle in the inner chamber, central baffle is cyclic annular, the scattering baffle respectively with central baffle with the diapire fixed connection of inner chamber, central baffle and a plurality of scattering baffle will the inner chamber is cut apart into respectively with the central cavity of opening intercommunication and encircle a plurality of outer fringe cavities that central cavity set up, central cavity and one of them outer fringe cavity intercommunication forms a runner, and the rest outer fringe cavity forms rest runners respectively.

Further, the valve ports comprise 2n outer edge valve ports, n+1 flow channels are arranged in the valve core, and n+1 scattering baffles are arranged in the inner cavity, wherein n is an integer larger than 1.

Further, the outer edge valve port is provided with two side edges along the circumferential direction of the shell, and extension lines of the two side edges are intersected with the axis of the shell.

Further, the outer edge valve port is fan-shaped.

Further, n first outer edge valve ports and n second outer edge valve ports are arranged on the bottom wall, the symmetry axes of the n first outer edge valve ports and the symmetry axes of the n second outer edge valve ports are respectively distributed around the central valve port in an equiangular alternating mode, and an included angle between two side edges of the first outer edge valve port is larger than an included angle between two side edges of the second outer edge valve port.

Further, n is 2.

Further, a limiting structure capable of limiting the rotation of the valve core is arranged between the valve core and the valve shell.

Further, the limit structure comprises a first limit protrusion and a second limit protrusion, the first limit protrusion is arranged on one side of the valve core, which is away from the sealing gasket, the second limit protrusion is arranged on the inner wall of the valve cavity, which corresponds to the first limit protrusion, and the second limit protrusion can limit the first limit protrusion in the rotation direction of the valve core.

Further, the valve further comprises a driving part, a rotating shaft structure is arranged on one side, deviating from the sealing gasket, of the valve core, the rotating shaft structure is coaxially arranged with the valve core, the rotating shaft structure penetrates through the valve housing, and the rotating shaft structure can be driven by the driving part to drive the valve core to rotate.

Further, a sealing ring is arranged between the rotating shaft structure and the valve casing.

Further, a sealing gasket is arranged on one side of the bottom wall, which is away from the sealing gasket, the sealing gasket comprises an outer ring part, an inner ring part and a supporting part connected between the inner ring part and the outer ring part, the outer ring part is arranged on the periphery of all outer edge valve ports, the inner ring part is arranged on the periphery of the central valve port, and the supporting part is arranged between two adjacent outer edge valve ports.

Compared with the prior art, the multi-way valve capable of being proportionally adjusted has at least one or more of the following beneficial effects:

the multi-way valve capable of carrying out proportional adjustment realizes the proportional adjustment function of the multi-way valve by matching the valve core with the valve shell, so that other proportional adjustment valves are not required to be installed in a loop, the integration degree of a system is improved, and the control difficulty and cost are reduced;

the multi-way valve capable of being proportionally adjusted is characterized in that all valve ports are arranged at the bottom end of the valve casing, the valve ports are not arranged on the periphery of the valve casing, the area of the bottom end of the valve casing is fully utilized, the circumferential space of the multi-way valve is not occupied, and under the same flow requirement, the multi-way valve structure can be smaller and more compact and can be suitable for a narrow installation space;

the valve ports of the traditional multi-way valve are generally arranged on the side surfaces or are partially arranged on the side surfaces and partially arranged at the bottom ends, so that the sealing surfaces are required to be cylindrical or spherical, and corresponding sealing elements are respectively arranged on the side surfaces and the bottom surfaces, so that the sealing elements mostly need to be special-shaped sealing elements, the quantity of the sealing elements is more, the complexity is higher, the cost is higher and the failure risk is higher;

the runner of the multi-way valve capable of being proportionally adjusted is formed by grooving at the bottom end of the valve core, the runner is free from shielding, the processing is simpler, the cost is lower, and the weight reduction of the multi-way valve is realized;

the multi-way valve capable of carrying out proportional adjustment has the advantages that the valve port for proportional adjustment is set to be at a wider angle, and the separation of the flow channels in the valve core is plate-shaped, so that the accuracy of proportional adjustment can be improved, and the flow resistance can be reduced.

Drawings

Fig. 1 and fig. 2 are schematic perspective views of a five-way valve according to an embodiment of the present utility model;

FIG. 3 is a schematic diagram of an explosion structure of a five-way valve according to an embodiment of the present utility model;

FIG. 4 is a schematic cross-sectional view of a five-way valve according to an embodiment of the present utility model;

fig. 5 is a schematic perspective view of a five-way valve housing according to an embodiment of the present utility model;

fig. 6 and fig. 7 are schematic perspective views of a valve core of a five-way valve according to an embodiment of the present utility model;

FIG. 8 is a schematic cross-sectional view of a five-way valve according to an embodiment of the present utility model in a mode-one state;

FIG. 9 is a schematic cross-sectional view of a five-way valve according to an embodiment of the present utility model in a second mode in a top view;

FIG. 10 is a schematic cross-sectional view of a five-way valve according to an embodiment of the present utility model in a top view in a three-mode state;

FIG. 11 is a schematic cross-sectional view of a five-way valve according to an embodiment of the present utility model in a top view in a mode four state;

FIG. 12 is a schematic cross-sectional view of a five-way valve according to an embodiment of the present utility model in a mode five state in a top view direction;

fig. 13 is a schematic cross-sectional structure of a five-way valve in a mode six in a top view direction according to an embodiment of the present utility model.

The valve comprises a 1-valve shell, a 11-shell, a 111-bottom wall, a 112-central valve port, a 113-outer edge valve port, a 114-first outer edge valve port, a 1141-first valve port, a 1142-third valve port, a 115-second outer edge valve port, a 1151-second valve port, a 1152-fourth valve port, a 116-flange, a 117-mounting groove, a 118-fixing lug, a 12-cover body, a 121-convex ring, a 122-groove, a 123-annular groove, a 2-valve core, a 21-flow passage, a 211-first flow passage, a 212-second flow passage, a 213-third flow passage, a 22-central baffle, a 23-scattering baffle, a 231-first scattering baffle, a 232-second scattering baffle, a 233-third scattering baffle, a 24-limiting structure, a 241-first limiting protrusion, a 25-rotating shaft structure, a 251-limiting convex ring structure, a 252-stop face, a 3-sealing pad, a 31-through port, a 4-driving part, a 5-sealing ring, a 6-sealing ring pad, a 61-outer ring part, a 62-inner ring part and a 63-supporting part.

Detailed Description

In order to further describe the technical means and effects adopted for achieving the preset aim of the utility model, the following detailed description is given below of the specific implementation, structure, characteristics and effects according to the utility model with reference to the attached drawings and the preferred embodiments.

Examples

The embodiment provides a proportional adjustable multi-way valve comprising a valve housing 1, a valve core 2 and a gasket 3.

The valve housing 1 has a valve cavity, the valve housing 1 has a bottom wall 111 along an axial direction, the bottom wall 111 is provided with a valve port communicated with the valve cavity, the valve port comprises a central valve port 112 and a plurality of outer edge valve ports 113 arranged around the central valve port 112, and preferably 2n outer edge valve ports 113 are arranged. The technical solution will be further described with reference to a five-way valve structure, i.e. n is 2, and the valve ports include a central valve port 112 and four peripheral valve ports 113, as shown in fig. 1 to 3. However, it should be noted that the number of ports of the multi-way valve in this embodiment is not limited to five, and may be other plural, for example, n is 3, so as to form a seven-way valve; for example, n is 4, and a nine-way valve is formed.

The valve housing 1 is preferably formed by a housing 11 and a cover 12, which are schematically shown in fig. 3. The housing 11 is formed with a receiving cavity, an end of the housing 11 in an axial direction is formed with an insertion opening communicating with the receiving cavity, and the cover 12 is covered at the insertion opening and is fixedly connected with the housing 11, as shown in fig. 4. The fixing between the cover 12 and the housing 11 may be various, such as welding, or gluing. The cavity formed between the cover 12 and the housing 11 constitutes the valve cavity. While the other end side of the housing 11 facing away from the insertion opening 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, and the outer edge valve port 113 adopts fan-shaped design, and has the advantages of high proportion adjustment precision, high linearity in proportion adjustment and the like. As shown in FIG. 5, the symmetry axes of the four peripheral ports 113 are equiangularly distributed around the central port 112, and the short arc edge of each peripheral port 113 faces the central port 112, and the extension lines of the side edges meet at the axial center of the housing 11. Of course, the shape of the central valve port 112 is not limited to a circle, and may be any shape, such as triangle, quadrangle, etc. in the specific implementation; the shape of the outer edge valve port 113 is not limited to a sector, and preferably has two sides along the circumferential direction of the housing 11, and the extension lines of the two sides meet the axial center of the housing 11.

Among the four outer-edge valve ports 113, two first outer-edge valve ports 114 and two second outer-edge valve ports 115 are included, 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 respectively and alternately distributed around the central valve port 112 at equal angles, and the included angle between the two sides of the first outer-edge valve port 114 is larger than the included angle between the two sides of the second outer-edge valve port 115, as shown in fig. 5.

The valve core 2 is rotatably arranged in the valve cavity, and the direction of a rotating shaft 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 a through hole 31 is formed at the position of the sealing gasket 3 corresponding to the valve port. As shown in FIG. 5, which schematically illustrates a preferred embodiment, the bottom wall 111 is formed with a flange 116 extending inwardly at the edge of the valve port. And each through hole 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, as shown in fig. 4.

Three flow passages 21 which are not communicated with each other are arranged in the valve core 2, and the flow passages 21 are communicated with the outside at one side of the valve core 2 facing the sealing gasket 3. The body of the valve body 2 is preferably disc-shaped, the flow passage 21 is provided in the body, and the flow passage 21 has an inlet and an outlet, which communicate with the outside on the same side of the body toward the gasket 3. As shown in fig. 6 and 7, a preferred embodiment 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 pad 3 has an opening communicating with the inner cavity. A central baffle 22 and three scattering baffles 23 are disposed within the interior cavity. The central partition 22 is annular and the scattering partition 23 is scattering distributed, i.e. passes through the axis of the valve body 2. Three scattering baffles 23 are fixedly connected to the central baffle 22 and the side walls of the inner chamber, respectively. The central partition 22 and the three scattering partitions 23 divide the inner cavity into a central chamber communicating with the openings and three outer edge chambers provided around the central chamber, respectively. The central chamber communicates with one of the peripheral chambers to form a flow passage 21. As shown in fig. 7, a preferred solution is schematically shown, and a notch is disposed at the position of the central partition 22 corresponding to the outer edge chamber, that is, the central partition 22 is in a C shape, so as to realize communication between the central chamber and the corresponding outer edge chamber. While the remaining outer edge chambers form the remaining flow channels 21, respectively.

The valve element 2 can be driven to rotate among a plurality of indexes, one of the flow passages 21 can be respectively communicated with the central valve port 112 and one of the outer edge valve ports 113, and each of the other flow passages 21 can be communicated with at least one of the other outer edge valve ports 113. As shown in fig. 6, a rotary shaft structure 25 is disposed on a side of the valve core 2 facing away from the sealing pad 3, and the rotary shaft structure 25 is disposed coaxially with the valve core 2. The rotating shaft structure 25 penetrates through the valve housing 1, that is, a through hole is formed in the cover 12 corresponding to the rotating shaft structure 25, and the rotating shaft structure 25 passes through the cover 12 through the through hole 31. In order to ensure the tightness of the valve housing 1, a sealing ring 5 is preferably disposed between the rotating shaft structure 25 and the cover 12, for example, a limiting convex ring structure 251 may be disposed on an outer wall of the rotating shaft structure 25, and a stop surface 252 is further formed on a circumferential wall of the rotating shaft structure 25, and when assembled, the sealing ring 5 is sleeved on the rotating shaft structure 25, and the stop surface 252 may tightly abut the sealing ring 5 against an inner wall of the cover 12, thereby realizing sealing. As shown in fig. 4, a preferred solution is schematically shown in the drawing, the limit collar structure 251 is disposed at a connection portion between the rotary shaft structure 25 and the main body of the valve core 2, a collar 121 is disposed at a position corresponding to the rotary shaft structure 25 on the inner wall of the cover 12, a groove 122 is formed in the collar 121, the through hole is disposed at a bottom of the groove 122 and is communicated with the groove 122, a size of the groove 122 is matched with a size of the limit collar structure 251, and a size of the groove 122 is larger than a size of the through hole. When assembling, the limit convex ring structure 251 is located in the groove 122, the stop surface 252 tightly abuts the seal ring 5 on the bottom of the groove 122 to realize sealing, and the inner wall of the groove 122 can limit the limit convex ring structure 251, so that the valve core 2 can rotate more stably.

Preferably, the end of the rotating shaft structure 25 is in a gear shape, and the length direction of the teeth is consistent with the axial direction of the rotating shaft structure 25, so that the valve core 2 can be driven to rotate by the driving component 4 after the assembly is completed and can be in transmission connection with the driving component 4. The drive element 4 can be, for example, an actuator, as shown in fig. 1 or 4, which is fastened to the valve housing 1, for example, to the cover 12. The driving main shaft of the actuator 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 the specific structure thereof is not an important point of protection of the present utility model, so the specific structure of the actuator is not described in detail in this embodiment. Of course, the driving part 4 is not limited to one type of actuator, and may be any other driving structure.

A limit structure 24 capable of limiting the rotation of the valve element 2 is arranged between the valve element 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 disposed on a side of the valve core 2 facing away from the sealing pad 3, as shown in fig. 3 or 6. The second limiting protrusion is disposed on an inner wall of the valve cavity corresponding to the first limiting protrusion 241, that is, on an inner wall of the cover 12, as shown in fig. 4, an annular groove 123 is disposed on the inner wall of the cover 12, and the second limiting protrusion (not shown) is disposed in the annular groove 123, and after the multi-way valve is assembled, the first limiting protrusion 241 extends into the annular groove 123. Along the circumferencial direction of case 2, one side of first spacing protruding 241 can with the protruding one side butt of second behind the case 2 rotates certain angle, the opposite side of first spacing protruding 241 can with the protruding opposite side butt of second, and then realize the spacing protruding of second is in the direction of rotation of case 2 is right first spacing protruding 241 carries out spacingly, guarantees case 2 can only rotate in the angle range of predetermineeing, can prevent its excessive rotation, can also make things convenient for the executor to seek the position simultaneously.

In a further embodiment, a sealing gasket 6 is provided on a side of the bottom wall 111 facing away from the sealing gasket 3, the sealing gasket 6 includes an outer ring portion 61, an inner ring portion 62, and a supporting portion 63 connected between the inner ring portion 62 and the outer ring portion 61, the outer ring portion 61 is disposed at the periphery of all the outer-rim valve ports 113, the inner ring portion 62 is disposed at the periphery of the central valve port 112, and the supporting portion 63 is disposed between two adjacent outer-rim valve ports 113. As shown in fig. 2, a mounting groove 117 matching the shape of the sealing gasket 6 is preferably provided on the side of the bottom wall 111 facing away from the sealing gasket 3, and the sealing gasket 6 is embedded in the mounting groove 117, and the sealing gasket 6 protrudes from the mounting groove 117, as shown in fig. 4. The gasket 6 can seal between the valve housing 1 and the mounting surface to be mounted when the multiway valve is fixedly mounted on the mounting surface to be mounted. The multi-way valve may be fixed in various forms, for example, as shown in fig. 5, a plurality of fixing lugs 118 are disposed on the periphery of the housing 11 near the sealing gasket 6, and each fixing lug 118 is provided with a fixing hole, and when the multi-way valve is installed, the valve housing 1 and the to-be-installed surface can be fixedly connected through the fixing holes by using fasteners such as screws.

The working principle of the five-way valve is further described with reference to fig. 8 to 13, specifically as follows:

three scattering partitions 23 are defined in order as a first scattering partition 231, a second scattering partition 232, and a third scattering partition 233, respectively; defining four peripheral valve ports 113 as a first port 1141, a second port 1151, a third port 1142, and a fourth port 1152, respectively; defining a flow passage 21 formed between the first diffusion barrier 231, the central barrier 22, and the second diffusion barrier 232 as a first flow passage 211; defining the flow passage 21 formed between the second diffusion barrier 232, the central barrier 22, and the third diffusion barrier 233 as the second flow passage 212; the flow passage 21 formed between the third diffusion barrier 233, the center barrier 22, and the first diffusion barrier 231 is defined as a third flow passage 213. In order to better explain the technical solution, in this embodiment, the thickness of the partition board is not considered, but in a specific implementation, the included angle between two sides of each outer edge valve port 113 may be adaptively adjusted according to the specific thickness of the partition board.

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

Assuming that the valve body 2 is rotated to a mode-one position as shown in fig. 8, at this time, the first valve port 1141 is located between the first diffusion barrier 231 and the second diffusion barrier 232, the second valve port 1151 and the third valve port 1142 are located between the second diffusion barrier 232 and the third diffusion barrier 233, respectively, and the fourth valve port 1152 is located between the first diffusion barrier 231 and the third diffusion barrier 233. The first flow passage 211 communicates with the first port 1141 and the central port 112, the second flow passage 212 communicates with the second port 1151 and the third port 1142, and the third flow passage 213 communicates with the fourth port 1152.

When the spool 2 rotates counterclockwise by 0-48 °, the spool 2 is in the position shown in fig. 9, which is defined as the mode two position, at which the first valve port 1141 is located between the first diffusion barrier 231 and the second diffusion barrier 232, the second valve port 1151 is located between the second diffusion barrier 232 and the third diffusion barrier 233, the fourth valve port 1152 is located between the first diffusion barrier 231 and the third diffusion barrier 233, and the third diffusion barrier 233 divides the third valve port 1142 into two parts. The first flow passage 211 communicates with the first valve port 1141 and the central valve port 112, the second flow passage 212 communicates with the second valve port 1151 and the third valve port 1142, and the third flow passage 213 communicates with 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 separator 233 at the third valve port 1142 can be adjusted, so as to control the flow ratio between the third valve port 1142 and the second and fourth valve ports 1151 and 1152, and realize proportional adjustment.

When the spool 2 rotates counterclockwise by 48 ° to the position shown in fig. 10, it is defined as a mode three position, in which the first valve port 1141 is located between the first diffusion barrier 231 and the second diffusion barrier 232, the second valve port 1151 is located between the second diffusion barrier 232 and the third diffusion barrier 233, and the third valve port 1142 and the fourth valve port 1152 are located between the first diffusion barrier 231 and the third diffusion barrier 233, respectively. The first flow passage 211 communicates with the first port 1141 and the central port 112, the second flow passage 212 communicates with the second port 1151, and the third flow passage 213 communicates with the third port 1142 and the fourth port 1152.

When the spool 2 is rotated 180 ° counterclockwise to the position shown in fig. 11, it is defined as a mode four position, at which the first valve port 1141 and the fourth valve port 1152 are located between the second diffusion barrier 232 and the third diffusion barrier 233, respectively, the second valve port 1151 is located between the first diffusion barrier 231 and the third diffusion barrier 233, and the third valve port 1142 is located between the first diffusion barrier 231 and the second diffusion barrier 232. The first flow passage 211 communicates with the third port 1142 and the central port 112, the second flow passage 212 communicates with the first port 1141 and the fourth port 1152, and the third flow passage 213 communicates with the second port 1151.

When the spool 2 rotates 180-228 ° counterclockwise, the spool 2 is in the position shown in fig. 12, defined as a mode five position, at which the third diffusion barrier 233 divides the first valve port 1141 into two parts, the second valve port 1151 is located between the first diffusion barrier 231 and the third diffusion barrier 233, the third valve port 1142 is located between the first diffusion barrier 231 and the second diffusion barrier 232, and the fourth valve port 1152 is located between the second diffusion barrier 232 and the third diffusion barrier 233. The first flow passage 211 communicates with the third valve port 1142 and the central valve port 112, the second flow passage 212 communicates with the first valve port 1141 and the fourth valve port 1152, and the third flow passage 213 communicates with 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 separator 233 at the first valve port 1141 can be adjusted, so as to control the flow ratio between the first valve port 1141 and the second and fourth valve ports 1151 and 1152, and realize proportional adjustment.

When the spool 2 continues to rotate counterclockwise 228 ° to the position shown in fig. 13, it is defined as a mode six position, at which the first valve port 1141 and the second valve port 1151 are located between the first diffusion barrier 231 and the third diffusion barrier 233, respectively, the third valve port 1142 is located between the first diffusion barrier 231 and the second diffusion barrier 232, and the fourth valve port 1152 is located between the second diffusion barrier 232 and the third diffusion barrier 233. The first flow passage 211 communicates with the third port 1142 and the central port 112, the second flow passage 212 communicates with the fourth port 1152, and the third flow passage 213 communicates with the first port 1141 and the second port 1151.

Compared with the prior art, the multi-way valve capable of being proportionally adjusted has at least one or more of the following beneficial effects:

the multi-way valve capable of carrying out proportional adjustment realizes the proportional adjustment function of the multi-way valve by matching the valve core with the valve shell, so that other proportional adjustment valves are not required to be installed in a loop, the integration degree of a system is improved, and the control difficulty and cost are reduced;

the multi-way valve capable of being proportionally adjusted is characterized in that all valve ports are arranged at the bottom end of the valve casing, the valve ports are not arranged on the periphery of the valve casing, the area of the bottom end of the valve casing is fully utilized, the circumferential space of the multi-way valve is not occupied, and under the same flow requirement, the multi-way valve structure can be smaller and more compact and can be suitable for a narrow installation space;

the valve ports of the traditional multi-way valve are generally arranged on the side surfaces or are partially arranged on the side surfaces and partially arranged at the bottom ends, so that the sealing surfaces are required to be cylindrical or spherical, and corresponding sealing elements are respectively arranged on the side surfaces and the bottom surfaces, so that the sealing elements mostly need to be special-shaped sealing elements, the quantity of the sealing elements is more, the complexity is higher, the cost is higher and the failure risk is higher;

the runner of the multi-way valve capable of being proportionally adjusted is formed by grooving at the bottom end of the valve core, the runner is free from shielding, the processing is simpler, the cost is lower, and the weight reduction of the multi-way valve is realized;

the multi-way valve capable of carrying out proportional adjustment has the advantages that the valve port for proportional adjustment is set to be at a wider angle, and the separation of the flow channels in the valve core is plate-shaped, so that the accuracy of proportional adjustment can be improved, and the flow resistance can be reduced.

In this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a list of elements is included, and may include other elements not expressly listed.

In this document, terms such as front, rear, upper, lower, etc. are defined with respect to the positions of the components in the drawings and with respect to each other, for clarity and convenience in expressing the technical solution. It should be understood that the use of such orientation terms should not limit the scope of the claimed utility model.

The embodiments described above and features of the embodiments herein may be combined with each other without conflict.

The foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the utility model are intended to be included within the scope of the utility model.

Claims (13)

1. A multi-way valve capable of being adjusted in proportion is characterized by comprising a valve shell (1), a valve core (2) and a sealing gasket (3), wherein the valve shell (1) is provided with a valve cavity,

the valve housing (1) is provided with a bottom wall (111) along the axial direction, the bottom wall (111) is provided with a valve port communicated with the valve cavity, the valve port comprises a central valve port (112) and a plurality of outer edge valve ports (113) arranged around the central valve port (112),

the valve core (2) is rotatably arranged in the valve cavity, the direction of a rotating shaft of the valve core (2) is consistent with the axial direction of the valve shell (1), the valve core (2) and the bottom wall (111) are sealed by the sealing gasket (3), a through hole (31) is arranged at the position of the sealing gasket (3) corresponding to the valve port,

the valve core (2) is internally provided with a plurality of flow passages (21) which are not communicated with each other, the flow passages (21) are communicated with the outside at one side of the valve core (2) facing the sealing gasket (3), the valve core (2) can be driven to rotate among a plurality of indexes, one flow passage (21) can be respectively communicated with the central valve port (112) and one outer edge valve port (113), and each flow passage (21) can be at least communicated with one of the rest outer edge valve ports (113).

2. The proportional adjustable multiport valve according to claim 1, wherein the body of the valve core (2) is disc-shaped, the flow channel (21) is provided in the body, the flow channel (21) has an inlet and an outlet, which communicate with the outside on the same side of the body facing the sealing gasket (3).

3. The proportional adjustable multi-way valve according to claim 2, wherein the main body of the valve core (2) is provided with an inner cavity, one side of the valve core (2) facing the sealing gasket (3) is provided with an opening communicated with the inner cavity, a central partition plate (22) and a plurality of scattering partition plates (23) are arranged in the inner cavity, the central partition plate (22) is annular, the scattering partition plates (23) are fixedly connected with the central partition plate (22) and the bottom wall (111) of the inner cavity respectively, the central partition plate (22) and the scattering partition plates (23) divide the inner cavity into a central cavity communicated with the opening respectively and a plurality of outer edge cavities arranged around the central cavity, the central cavity is communicated with one of the outer edge cavities to form a flow passage (21), and the rest of the outer edge cavities form rest flow passages (21) respectively.

4. A proportional variable multi-way valve according to claim 3, wherein the ports comprise 2n outer ports (113), n+1 flow channels (21) are provided in the valve element (2), and n+1 scattering baffles (23) are provided in the inner chamber, wherein n is an integer greater than 1.

5. The proportional adjustable multi-way valve according to claim 4, wherein the valve housing (1) has a housing (11), and the outer rim valve port (113) has two sides along a circumferential direction of the housing (11), and extension lines of the two sides meet an axial center of the housing (11).

6. The proportional multi-way valve of claim 5, wherein the peripheral valve port (113) is scalloped.

7. The proportional adjustable multiport valve of claim 5, wherein n first peripheral valve ports (114) and n second peripheral valve ports (115) are provided on the bottom wall (111), symmetry axes of the n first peripheral valve ports (114) and symmetry axes of the n second peripheral valve ports (115) are respectively and alternately distributed around the central valve port (112) at equal angles, and an included angle between two side edges of the first peripheral valve ports (114) is larger than an included angle between two side edges of the second peripheral valve ports (115).

8. The proportioning valve of claim 7 wherein n is 2.

9. The proportional adjustable multi-way valve according to claim 1, characterized in that a limit structure (24) is arranged between the valve core (2) and the valve housing (1) for limiting the rotation of the valve core (2).

10. The proportional adjustable multi-way valve according to claim 9, wherein the limiting structure (24) comprises a first limiting protrusion (241) and a second limiting protrusion, the first limiting protrusion (241) is arranged on one side of the valve core (2) away from the sealing gasket (3), 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).

11. The proportional adjustable multi-way valve according to claim 1, further comprising a driving component (4), wherein a rotating shaft structure (25) is arranged on one side of the valve core (2) away from the sealing gasket (3), the rotating shaft structure (25) is coaxially arranged with the valve core (2), the rotating shaft structure (25) penetrates through the valve housing (1), and the rotating shaft structure (25) can be driven by the driving component (4) to drive the valve core (2) to rotate.

12. The proportional adjustable multiport valve according to claim 11, wherein a sealing ring (5) is arranged between the spindle structure (25) and the valve housing (1).

13. The proportional adjustable multiport valve according to claim 1, wherein a sealing gasket (6) is provided on a side of the bottom wall (111) facing away from the sealing gasket (3), the sealing gasket (6) comprises an outer ring portion (61), an inner ring portion (62) and a supporting portion (63) connected between the inner ring portion (62) and the outer ring portion (61), the outer ring portion (61) is provided at the periphery of all outer ring valve ports (113), the inner ring portion (62) is provided at the periphery of the central valve port (112), and the supporting portion (63) is provided between two adjacent outer ring valve ports (113).