CN115507200B

CN115507200B - Multi-way valve

Info

Publication number: CN115507200B
Application number: CN202211246755.0A
Authority: CN
Inventors: 赵路; 李博; 王红伟
Original assignee: Stendi Automotive Technology Suzhou Co ltd
Current assignee: Stendi Automotive Technology Suzhou Co ltd
Priority date: 2022-10-12
Filing date: 2022-10-12
Publication date: 2023-07-07
Anticipated expiration: 2042-10-12
Also published as: CN115507200A

Abstract

The invention provides a multi-way valve, which can solve the problems of complicated structure and high production cost of a control valve in the cooling and heat exchanging system of the existing new energy automobile. The valve comprises a valve body with an inner cavity and a valve disc provided with a valve disc flow passage opening, wherein the inner cavity is axially divided into two independent cavities by the valve disc, a plurality of subchambers which are not communicated with each other are formed in the independent cavities, an external interface is formed at the axial end part of the corresponding side of the valve body in each subchamber, two axial sides of the valve disc are respectively connected with the independent cavities in a floating sealing manner through a sealing piece, a sealing flow passage opening is formed in the sealing piece, a cooling medium flow passage is formed by each subchamber, the external interface arranged on the subchamber and the sealing flow passage opening which is matched and communicated with the subchamber, and the circumferential position of the valve disc flow passage opening can be adjusted by rotating to control any cooling medium flow passage in any independent cavity to form a cooling medium passage with any cooling medium flow passage in another independent cavity.

Description

Multi-way valve

Technical Field

The invention relates to the technical field of valves, in particular to a control valve of a cooling heat exchange system of a new energy automobile, and particularly relates to a multi-way valve.

Background

The cooling heat exchange system of the new energy automobile generally relates to a motor cooling subsystem, a cooling subsystem of a power battery and a cooling and heating air conditioning subsystem of a personnel cabin, and independent cooling heat exchange pipelines of each subsystem are required to be provided with corresponding independent control valves, so that the existing cooling heat exchange system pipelines and the corresponding control valves thereof have the defects of complex structure, large occupied space and high production cost, and the higher and higher integrated control requirements of the current new energy automobile cannot be met.

Disclosure of Invention

Aiming at the problems, the invention provides a multi-way valve which can solve the problems of complicated control structure, large occupied space and high production cost caused by the fact that each subsystem in the cooling and heat exchanging system of the existing new energy automobile is required to be provided with an independent control valve.

Its technical scheme is, a multiway valve, and it includes the valve body that has the inner chamber, its characterized in that: the valve plate is characterized in that a valve plate capable of axially rotating around the valve plate is arranged in an inner cavity of the valve plate, the valve plate separates the inner cavity of the valve plate along the axial direction to form an upper independent cavity and a lower independent cavity, a plurality of independent subchambers are formed in each independent cavity, the axial end parts of the corresponding sides of the valve plate are respectively provided with external interfaces capable of being connected with external pipelines, the two axial sides of the valve plate are respectively connected with the independent cavities on the two sides through a sealing piece in a floating sealing mode, a sealing flow port matched and communicated with the subchambers on the corresponding sides is formed in the sealing piece, each subchamber, the external interfaces arranged on the subchamber and the sealing flow port matched and communicated with the subchamber form a cooling medium flow passage, a plurality of axial through flow ports are formed in the valve plate, the cooling medium flow ports respectively positioned in the upper independent cavity and the lower independent cavity are communicated with each other to form a cooling medium passage, and the valve plate can be adjusted to be positioned in the circumferential direction through rotation of the valve plate so as to control the position of the flow ports on the periphery to control any independent cavity to be positioned in any cooling medium flow passage.

Further, each subchamber in each independent chamber forms an axial projection surface on the valve disc; the axial projection surface of any subchamber of any independent cavity is at least partially overlapped with the axial projection surfaces of two subchambers of the other independent cavity to form a corresponding partial overlapped surface, and the shape of a valve disc flow passage opening formed on the valve disc corresponds to the shape of the partial overlapped surface; when the valve disc rotates to the position that any valve disc flow port is axially aligned with a part of the overlapping surface, two subchambers forming the part of the overlapping surface are communicated through the valve disc flow port and form the cooling medium passage.

Furthermore, the sealing surfaces which are matched with each other are arranged between the sealing element and the sealing end surface of the independent cavity and between the sealing element and the axial disk surface of the valve disk.

Furthermore, one side surface of the sealing element facing the valve disc is a plane or an inclined plane or a curved surface, a bulge is arranged on one side surface facing the independent cavity, a hole groove corresponding to the bulge is arranged on the axial sealing end surface of the independent cavity, a matching surface contact is formed between one side plane or the inclined plane or the curved surface of the sealing element and the axial disc surface of the valve disc, and the bulge on the other side surface is connected with the hole groove on the axial sealing end surface of the independent cavity in a matching way.

Furthermore, an axial mounting hole is formed in the axial sealing end face of the upper independent cavity or the lower independent cavity, a spring is arranged in the axial mounting hole, one axial end of the spring is abutted to the bottom of the axial mounting hole, and the other axial end of the spring is abutted to a sealing element positioned on one side of the independent cavity.

Furthermore, pressure relief holes penetrating axially are distributed on the valve disc.

The sealing element in the scheme of the invention is made of wear-resistant waterproof materials.

Optionally, the seal is made of PTFE material.

Optionally, the seal comprises a PTFE layer and a rubber layer, the PTFE layer and the rubber layer being integrally bonded by a vulcanization process.

Further, the valve disc rotating mechanism comprises a gear motor and a driving gear, the gear motor is fixedly arranged on the valve body, a power output shaft of the gear motor stretches into an inner cavity of the valve body and is connected with the driving gear in a gear mode, a tooth-shaped surface is arranged on the periphery of the valve disc, and the driving gear is in meshed transmission connection with the tooth-shaped surface of the valve disc.

Further, the valve disc is provided with a limiting lug protruding out of the circumferential surface of the valve disc in the radial direction, the cavity wall of the inner cavity of the valve body is provided with a limiting stop pin, the limiting stop pin is located in a rotating circumferential path of the limiting lug of the valve disc, and the limiting stop pin can be abutted against the radial protruding side surface of the limiting lug.

Still further, the valve disc rotation mechanism further includes a position sensor mounted to the valve body.

Further, the valve body comprises an upper valve body and a lower valve body, a central shaft is arranged at the bottom of the upper valve body, the lower valve body, the valve disc and the sealing element are respectively provided with a shaft hole corresponding to the central shaft, the upper valve body and the lower valve body are fixedly connected into a whole, and the central shaft of the upper valve body axially penetrates through the shaft holes of the valve disc and the shaft holes of the sealing element and stretches into the shaft holes of the lower valve body.

Further, the upper independent cavity and the lower independent cavity are respectively provided with four subchambers, and the valve disc is provided with four valve disc flow passages.

Further, the upper valve body comprises a valve cover, four annular convex hulls are formed on the valve cover around the central shaft, the annular convex hulls are provided with hollow cavities with open bottoms, and each hollow cavity forms a sub-cavity positioned in the upper independent cavity; the four annular convex hulls are respectively a first convex hull, a second convex hull, a third convex hull and a fourth convex hull, the subcavities corresponding to each convex hull are respectively a first subcavities, a second subcavities, a third subcavities and a fourth subcavities, the second convex hull and the fourth convex hull are concentrically arranged on the periphery side of the central shaft, the first convex hull and the third convex hull are concentrically arranged on the periphery of the second convex hull and the fourth convex hull, and corresponding first external interfaces, second external interfaces, third external interfaces and fourth external interfaces are respectively arranged on the first convex hull, the second convex hull, the third convex hull and the fourth convex hull.

Further, the first convex hull and the third convex hull have the same height and form a concentric outer ring convex hull structure, the second convex hull and the fourth convex hull have the same height and form a concentric inner ring convex hull structure, and the convex height of the outer ring convex hull structure is larger than that of the inner ring convex hull structure.

Further, the lower valve body comprises a shell, the shell is provided with a hollow cavity with an open top, a separation rib plate is arranged in the hollow cavity of the shell, the separation rib plate separates the hollow cavity of the shell into four subcavities which surround the periphery of a shaft hole of the lower valve body, the subcavities are respectively a fifth subcavity, a sixth subcavity, a seventh subcavity and an eighth subcavity, and a fifth external interface, a sixth external interface, a seventh external interface and an eighth external interface which are respectively correspondingly communicated with the fifth subcavity, the sixth subcavity, the seventh subcavity and the eighth subcavity are arranged at the bottom of the shell.

Still further, the fifth sub-cavity, the sixth sub-cavity, the seventh sub-cavity and the eighth sub-cavity each comprise an arc section and a radial conical section which are mutually communicated and surround the axial center, wherein the arc sections of the fifth sub-cavity and the eighth sub-cavity are respectively positioned at the radial inner ends of the radial conical sections, the arc sections of the sixth sub-cavity and the seventh sub-cavity are respectively positioned at the radial outer ends of the radial conical sections, and the fifth external interface, the sixth external interface and the seventh external interface are respectively arranged on the arc sections of the fifth sub-cavity, the sixth sub-cavity and the seventh sub-cavity, and the eighth external interface is arranged on the radial conical section of the eighth sub-cavity.

Further, four valve disc flow passage openings on the valve disc are a first valve disc flow passage opening, a second valve disc flow passage opening, a third valve disc flow passage opening and a fourth valve disc flow passage opening respectively, wherein the second valve disc flow passage opening and the fourth valve disc flow passage opening are conical openings, the first valve disc flow passage opening and the third valve disc flow passage opening are arc-shaped openings, the two conical openings and the two arc-shaped openings are arranged outside the shaft hole of the valve disc in a central symmetry mode, and the two conical openings and the two arc-shaped openings are staggered along the circumferential direction.

Further, the sealing element comprises an upper sealing element and a lower sealing element, the upper sealing element is arranged between the valve disc and the upper valve body, the lower sealing element is arranged between the valve disc and the lower valve body, the upper sealing element is provided with sealing fluid ports corresponding to the first subcavity, the second subcavity, the third subcavity and the fourth subcavity one by one, the lower sealing element is provided with sealing fluid ports corresponding to the fifth subcavity, the sixth subcavity, the seventh subcavity and the eighth subcavity one by one, one side end surfaces of the upper sealing element and the lower sealing element, which are respectively oriented to the valve disc, are planes, a flange is arranged on the surface of the upper sealing element, which is oriented to the lower valve body, a plurality of positioning protrusions are arranged on the end surface of the upper valve body, which is provided with a plurality of positioning holes, the flange of the upper sealing element is embedded in the annular clamping grooves, and the positioning protrusions of the lower sealing element are embedded in the positioning holes in a uniform and corresponding manner.

The invention has the beneficial effects that: the valve disc is rotatably arranged in the valve body, the inner cavity of the valve body is axially divided into an upper independent cavity and a lower independent cavity, a plurality of independent subchambers which are not communicated with each other are formed in each independent cavity, the axial end part of each subchamber on the corresponding side of the valve body is provided with an external interface which can be connected with an external pipeline, two axial sides of the valve disc are respectively connected with the independent cavities on two sides through a sealing piece in a floating sealing mode, the sealing piece is provided with a sealing flow passage opening which is matched and communicated with the subchamber on the corresponding side, therefore, each subchamber, the external interface arranged on the subchamber and the sealing flow passage opening which is matched and communicated with the subchamber form a cooling medium passage, the flow passage opening arranged on the valve disc can be communicated with the cooling medium passage which is respectively arranged in the upper independent cavity and the lower independent cavity, the position of each valve disc on the circumferential direction can be adjusted through rotation, any cooling medium passage opening which is positioned in any independent cavity can be controlled to form a cooling medium passage with any cooling medium passage which is positioned in the other independent cavity, and the valve disc can be controlled by the valve disc on the other independent cavity, and the number of the valve disc can be controlled by a plurality of heat exchange valve discs can be controlled in a certain control system, and the number of heat exchange valve disc can be controlled in a certain production system, and a plurality of control valve disc can be controlled by a plurality of production systems, and a plurality of production systems can be reduced, and the production cost can be controlled.

Drawings

Fig. 1 is a schematic perspective view of a first view direction of a multi-way valve according to a first embodiment of the present invention;

fig. 2 is a schematic perspective view of a second view of a multi-way valve according to a first embodiment of the present invention;

FIG. 3 is a schematic top view of a multi-way valve according to a first embodiment of the present invention;

FIG. 4 is an enlarged schematic cross-sectional view of the A-A direction of FIG. 3;

FIG. 5 is an exploded view of a multi-way valve according to a first embodiment of the present invention;

FIG. 6 is a schematic perspective view of an upper valve body according to an embodiment of the present invention;

FIG. 7 is a schematic top view of an upper valve body according to an embodiment of the present invention;

FIG. 8 is a schematic view showing the bottom view of the upper valve body according to the first embodiment of the present invention;

FIG. 9 is a schematic perspective view of a lower valve body according to an embodiment of the present invention;

FIG. 10 is a schematic top view of a lower valve body according to an embodiment of the present invention;

FIG. 11 is a schematic view showing the bottom view of the lower valve body according to the first embodiment of the present invention;

FIG. 12 is a schematic perspective view of a valve disc according to a first embodiment of the present invention;

FIG. 13 is a schematic view of an upper seal member according to a first embodiment of the present invention;

FIG. 14 is a schematic side view of an upper seal member according to a first embodiment of the invention;

FIG. 15 is a schematic view of the structure of the lower seal member in accordance with the first embodiment of the present invention;

FIG. 16 is a schematic side view of a lower seal member according to an embodiment of the present invention;

FIG. 17 is a schematic perspective view of a valve disc according to a second embodiment of the present invention;

fig. 18 is a schematic structural view of an upper seal member according to another embodiment of the present invention.

Reference numerals:

100-valve body;

10-upper valve body, 11-central shaft, 12-valve cover, 13-first convex hull, 14-second convex hull, 15-third convex hull, 16-fourth convex hull, 17-motor base, 18-motor cover plate, 1 a-first subcavity, 2 a-second subcavity, 3 a-third subcavity, 4 a-fourth subcavity, 1 b-first external interface, 2 b-second external interface, 3 b-third external interface, 4 b-fourth external interface;

the valve comprises a lower valve body 20, a housing 21, a separation rib plate 22, an arc section 231, an arc section 232, a radial conical section 241, a radial conical section 242, a positioning hole 25, an axial mounting hole 26, a spring 27, a fifth sub-cavity 5a, a sixth sub-cavity 6a, a seventh sub-cavity 7a, an eighth sub-cavity 8a, a fifth external interface 5b, a sixth external interface 6b, a seventh external interface 7b and an eighth external interface 8 b;

30-valve disc, 31A-first valve disc flow passage opening, 31B-second valve disc flow passage opening, 31C-third valve disc flow passage opening, 31D-fourth valve disc flow passage opening, 32-tooth surface, 33-limit bump, 34-limit stop pin, 35-pressure relief hole;

41-upper seal, 411-flange, 41-1-upper seal, 41-2-upper seal, 41-3-upper seal, 41-4-upper seal, 42-lower seal, 421-positioning boss, 1 c-first seal runner port, 2 c-second seal runner port, 3 c-third seal runner port, 4 c-fourth seal runner port, 5 c-fifth seal runner port, 6 c-sixth seal runner port, 7 c-seventh seal runner port, 8 c-eighth seal runner port;

51-a gear motor, 52-a driving gear and 53-a position sensor.

Detailed Description

Embodiment one:

referring to fig. 1 to 16, the multi-way valve of the present invention comprises a valve body 100 having an inner cavity, wherein a valve disc 30 capable of rotating around the axial direction of the valve body is arranged in the inner cavity of the valve body 100, the valve disc 30 axially separates the inner cavity of the valve body to form an upper independent cavity and a lower independent cavity, and a plurality of sub-cavities which are not communicated with each other are formed in each independent cavity; the two axial sides of the valve disc 30 are respectively connected with the two independent cavities through a sealing element in a floating sealing way, and in the embodiment, the two axial sides of the valve disc 30 are respectively connected with the two independent cavities through an upper sealing element 41 and a lower sealing element 42 in a floating sealing way.

The valve body 100 of the embodiment comprises an upper valve body 10 and a lower valve body 20, wherein the upper valve body 10 and the lower valve body 20 are fixedly connected in a butt joint way to form a whole with an inner cavity, the upper valve body 10 and the lower valve body 20 are fixedly connected into a whole through a screw or an external hoop, or the upper valve body 10 and the lower valve body 20 are directly welded into a whole; the bottom of the upper valve body 10 in this embodiment is provided with a central shaft 11, the lower valve body 20, the valve disc 30, the upper sealing member 41 and the lower sealing member 42 are respectively provided with shaft holes corresponding to the central shaft 11, and the central shaft 11 of the upper valve body 10 sequentially axially penetrates through the shaft holes of the upper sealing member 41, the valve disc 30 and the lower sealing member 42 and extends into the shaft holes of the lower valve body 20.

In the embodiment, four sub-cavities are formed in the upper independent cavity and the lower independent cavity, wherein the four sub-cavities of the upper independent cavity are respectively a first sub-cavity 1a, a second sub-cavity 2a, a third sub-cavity 3a and a fourth sub-cavity 4a, and the four sub-cavities of the lower independent cavity are respectively a fifth sub-cavity 5a, a sixth sub-cavity 6a, a seventh sub-cavity 7a and an eighth sub-cavity 8a; in practical application, three or five or even more subchambers can be respectively arranged in the upper independent chamber and the lower independent chamber, and the number of subchambers in the upper independent chamber and the number of subchambers in the lower independent chamber can be designed to be different according to practical application requirements.

The axial end part of each subcavity on the corresponding side of the valve body is provided with an external interface which can be connected with an external pipeline, in the embodiment, the top of the valve body is correspondingly provided with a first external interface 1b, a second external interface 2b, a third external interface 3b and a fourth external interface 4b, and the bottom of the valve body 100 is correspondingly provided with a fifth external interface 5b, a sixth external interface 6b, a seventh external interface 7b and an eighth external interface 8b, wherein the first subcavity 1a, the second subcavity 2a, the third subcavity 3a and the fourth subcavity 4a are correspondingly provided with a fifth external interface 1b, a second external interface 2b, a third external interface 3b and a fourth external interface 4b.

The upper sealing member 41 is respectively provided with a sealing channel opening which is communicated with four sub-cavities of the upper independent cavity in a matching way, in particular a first sealing channel opening 1c which is communicated with the first sub-cavity 1a, a first sealing channel opening 2c which is communicated with the second sub-cavity 2a, a third sealing channel opening 3c which is communicated with the third sub-cavity 3a and a fourth sealing channel opening 4c which is communicated with the fourth sub-cavity 4 a; the lower sealing member 42 is provided with a sealing flow passage opening which is communicated with four sub-cavities in the lower independent cavity in a matching way, in particular a fifth sealing flow passage opening 5c which is communicated with a fifth sub-cavity 5a, a sixth sealing flow passage opening 6c which is communicated with a sixth sub-cavity 6a, a seventh sealing flow passage opening 7c which is communicated with a seventh sub-cavity 7a and an eighth sealing flow passage opening 8c which is communicated with an eighth sub-cavity 8a; each subchamber, the external interface arranged on the subchamber and the sealing flow passage opening matched and communicated with the subchamber form a cooling medium flow passage, for example, a first subchamber 1a, a first external interface 1b and a first sealing flow passage opening 1c are communicated to form a cooling medium flow passage 1, and the other same matters are that four cooling medium flow passages 1-4 which are not communicated with each other are formed in an upper independent chamber and four cooling medium flow passages 5-8 which are not communicated with each other are formed in a lower independent chamber in the embodiment; in this embodiment, four valve disc flow passages penetrating axially are formed on the valve disc 30, each valve disc flow passage can communicate two of the two cooling medium flow passages respectively located in the upper and lower independent cavities to form a cooling medium passage, and the position of each valve disc flow passage on the valve disc in the circumferential direction is adjusted by rotating the valve disc 30 so as to control any cooling medium flow passage located in any independent cavity to form a cooling medium passage with any cooling medium flow passage located in another independent cavity, thereby realizing multi-channel switching control.

As a preferred embodiment of the present invention, each subchamber within each independent chamber forms an axial projection surface on valve disk 30; the axial projection surface of any subchamber of any independent chamber can at least partially overlap with the axial projection surfaces of two subchambers of another independent chamber and form at least two corresponding partially overlapped surfaces, and the shape of the valve disc flow passage opening formed on the valve disc corresponds to the shape of the partially overlapped surfaces; when the valve disc 30 rotates to the point that any valve disc flow port is axially aligned with a part of the overlapping surface, two subchambers forming the part of the overlapping surface are communicated through the valve disc flow port and form a cooling medium passage; after the arrangement, the position of the valve disc flow passage opening in the circumferential direction is adjusted by rotating the valve disc 30, so that the cooling medium flow passage of any independent cavity can form a cooling medium passage with any cooling medium flow passage of the other independent cavity, and the function of multi-passage switching control is realized.

The upper valve body 10 in this embodiment includes a valve cover 12, four annular convex hulls are formed on the valve cover 12 around a central shaft 11, each annular convex hull has a hollow cavity with an open bottom, and each hollow cavity forms a sub-cavity located in the upper independent cavity; specifically, the four annular convex hulls are respectively a first convex hull 13, a second convex hull 14, a third convex hull 15 and a fourth convex hull 16, the subcavities corresponding to each convex hull are respectively a first subcavity 1a, a second subcavity 2a, a third subcavity 3a and a fourth subcavity 4a, the second convex hull 14 and the fourth convex hull 16 are concentrically arranged on the outer peripheral side of the central shaft 11, the first convex hull 13 and the third convex hull 15 are concentrically arranged on the outer periphery of the second convex hull 14 and the fourth convex hull 16, and the first convex hull 13, the second convex hull 14, the third convex hull 15 and the fourth convex hull 16 are respectively provided with a corresponding first external interface 1b, a second external interface 2b, a third external interface 3b and a fourth external interface 4b.

As a further preferable technical scheme of the embodiment of the invention, the first convex hull 13 and the third convex hull 15 are equal in height and form a concentric outer ring convex hull structure, the second convex hull 14 and the fourth convex hull 16 are equal in height and form a concentric inner ring convex hull structure, and the outer ring convex hull structure and the inner ring convex hull structure are arranged in a staggered manner in the circumferential direction; and the height of the bulge of the outer ring convex hull structure is larger than that of the inner ring convex hull structure.

The lower valve body 20 of the embodiment of the invention comprises a housing 21, wherein the housing 21 is provided with a hollow cavity with an open top, a separation rib plate 22 is arranged in the hollow cavity of the housing 21, the separation rib plate 22 separates the hollow cavity of the housing 21 into four subchambers which surround the periphery of a shaft hole of the lower valve body, namely a fifth subchamber 5a, a sixth subchamber 6a, a seventh subchamber 7a and an eighth subchamber 8a, and a fifth external interface 5b, a sixth external interface 6b, a seventh external interface 7b and an eighth external interface 8b which are correspondingly communicated with the fifth subchamber 5a, the sixth subchamber 6a, the seventh subchamber 7a and the eighth subchamber 8a are respectively arranged at the bottom of the housing 21.

The fifth sub-cavity 5a, the sixth sub-cavity 6a, the seventh sub-cavity 7a and the eighth sub-cavity 8a respectively comprise an arc section and a radial conical section which are mutually communicated and surround the axial center, wherein the arc sections 231 of the fifth sub-cavity 5a and the eighth sub-cavity 8a are respectively positioned at the radial inner ends of the radial conical sections 241 of the fifth sub-cavity 5a and the eighth sub-cavity, the arc sections 232 of the sixth sub-cavity 6a and the seventh sub-cavity 7a are respectively positioned at the radial outer ends of the radial conical sections 242 of the seventh sub-cavity, the fifth external interface 5b is arranged on the arc sections 231 of the fifth sub-cavity 5a, the sixth external interface 6b and the seventh external interface 7b are respectively arranged on the arc sections 232 of the sixth sub-cavity 6a and the seventh sub-cavity 7a, and the eighth external interface 8b is arranged on the radial conical sections 241 of the eighth sub-cavity 8 a.

In this embodiment, the axial projection surface formed by the first subcavity 1a on the valve disc 30 is partially overlapped with the axial projection surfaces formed by the sixth subcavity 6a and the seventh subcavity 7a on the valve disc 30, and two arc-shaped partially overlapped surfaces are formed; the axial projection surface formed by the third subcavity 3a on the valve disc 30 is respectively overlapped with the axial projection surfaces formed by the sixth subcavity 6a, the seventh subcavity 7a and the fifth subcavity 5a on the valve disc 30, and three arc-shaped partial overlapped surfaces are formed; the axial projection surface formed by the second subcavity 2a on the valve disc 30 is respectively overlapped with the axial projection surface formed by the fifth subcavity 5a and the eighth subcavity 8a on the valve disc 30 to form two conical partial overlapped surfaces; the axial projection surface formed by the fourth subcavity 4a on the valve disc 30 is respectively overlapped with the axial projection surfaces formed by the fifth subcavity 5a, the sixth subcavity 6a and the eighth subcavity 8a on the valve disc 30, and three conical partially overlapped surfaces can be formed.

In this embodiment, four valve disc flow passage ports are provided on the valve disc 30, namely, a first valve disc flow passage port 31A, a second valve disc flow passage port 31B, a third valve disc flow passage port 31C and a fourth valve disc flow passage port 31D, wherein the second valve disc flow passage port 31B and the fourth valve disc flow passage port 31D are conical ports matched with the conical partially overlapped surfaces, the first valve disc flow passage port 31A and the third valve disc flow passage port 31C are arc ports matched with the conical partially overlapped surfaces, and the two conical ports and the two arc ports are arranged outside the shaft hole of the valve disc in a central symmetry manner, and the two conical ports and the two arc ports are arranged in a staggered manner along the circumferential direction.

When the multi-way valve provided by the embodiment of the invention is provided with a plurality of working positions, four different cooling medium passages are arranged at each working position; for example, in the first working position, the first external port 1B, the first subchamber 1A, the first valve disc flow port 31A, the sixth subchamber 6a, and the sixth external port 6B of the upper valve body are sequentially connected to form a cooling medium passage, the second external port 2B, the second subchamber 2a, the second valve disc flow port 31B, the fifth subchamber 5a, and the fifth external port 5B of the lower valve body are sequentially connected to form a cooling medium passage, the third external port 3B, the third subchamber 3a, and the third valve disc flow port 31C of the valve disc 30 are sequentially connected to the seventh subchamber 7a, and the seventh external port 7B of the lower valve body to form a cooling medium passage, and the fourth external port 4B, the fourth subchamber, the fourth valve disc flow port 31D, and the eighth subchamber 8a, and the eighth external port 8B of the upper valve body are sequentially connected to form a cooling medium passage;

in the second working position, the first external interface 1B, the first subchamber 1A, the first valve disc flow port 31A of the valve disc 30, the seventh subchamber 7a of the lower valve body and the seventh external interface 7B are sequentially communicated to form a path of cooling medium passage, the second external interface 2B, the second subchamber 2a, the second valve disc flow port 31B of the valve disc 30, the eighth subchamber 8a and the eighth external interface 8B of the lower valve body are sequentially communicated to form a path of cooling medium passage, and the third external interface 3B, the third subchamber 3a and the third valve disc flow port 31C of the valve disc 30 of the upper valve body, the sixth subchamber 6a and the sixth external interface 6B of the lower valve body are sequentially communicated to form a path of cooling medium passage, and the fourth external interface 4B, the fourth subchamber 4a and the fourth valve disc flow port 31D of the valve disc 30, the fifth subchamber 5a and the fifth external interface 5B of the lower valve body are sequentially communicated to form a path of cooling medium passage;

in the third working device, the first external port 1B, the first subchamber 1A, the first valve disc flow port 31A, the seventh subchamber 7a, and the seventh external port 7B of the lower valve body are sequentially communicated to form a path of cooling medium passage, the second external port 2B, the second subchamber 2a, the second valve disc flow port 31B, the eighth subchamber 8a, and the eighth external port 8B of the lower valve body are sequentially communicated to form a path of cooling medium passage, the third external port 3B, the third subchamber 3a, the third valve disc flow port 31C, the fifth subchamber 5a, and the fifth external port 5B of the upper valve body are sequentially communicated to form a path of cooling medium passage, and the fourth external port 4B, the fourth subchamber 4a, and the fourth valve disc flow port 31D of the valve disc 30, the sixth subchamber 6a, and the sixth external port 6B of the lower valve body are sequentially communicated to form a path of cooling medium passage.

The upper sealing member 41 in this embodiment is disposed between the valve disc 30 and the upper valve body 10, the lower sealing member 42 is disposed between the valve disc 30 and the lower valve body 20, the upper sealing member 41 has sealing fluid ports corresponding to the first sub-chamber 1a, the second sub-chamber 2a, the third sub-chamber 3a and the fourth sub-chamber 4a one by one, the lower sealing member 42 has sealing fluid ports corresponding to the fifth sub-chamber 5a, the sixth sub-chamber 6a, the seventh sub-chamber 7a and the eighth sub-chamber 8a one by one, in this embodiment, the upper sealing member 41 and the lower sealing member 42 are respectively planar and respectively form surface contact with the valve disc 30, the end surface of the upper sealing member 41 facing the upper valve body side is provided with a flange 411, the end surface of the lower sealing member 42 facing the lower valve body side is provided with a plurality of positioning protrusions 421, the sealing end surface of the independent chamber of the upper valve body 10 is provided with an annular clamping groove, the sealing end surface of the independent chamber of the lower valve body 20 is provided with a plurality of positioning holes 25, the flange 41 is embedded into the annular clamping groove 411, and the positioning protrusions 421 are embedded into the positioning holes 25. In practical applications, other sealing profiles of mutually matched structures, such as inclined surface matching and curved surface matching, can be adopted between the upper sealing element 41 and/or the lower sealing element 42 and the valve disc 30 and between the sealing end surfaces of the two independent cavities.

An axial mounting hole 26 is formed in the sealing end face of the independent cavity of the lower valve body 20, a spring 27 is arranged in the axial mounting hole 26, one axial end of the spring 27 is abutted with the bottom of the axial mounting hole 26, and the other axial end of the spring is abutted with the lower sealing piece 42; the spring 27 can exert a certain pressing force on the lower seal 42, the valve disc 30 and the upper seal 41, thereby ensuring a floating seal effect.

According to a further preferred technical scheme of the embodiment of the invention, the valve disc rotating mechanism comprises a gear motor 51 and a driving gear 52, the gear motor 51 is fixedly arranged in a motor seat 17 of the valve cover 12, a motor cover plate 18 is arranged at the top of the motor seat 17, a power output shaft of the gear motor 51 extends into an inner cavity of the valve body and is in shaft connection with the driving gear 52, a tooth-shaped surface 32 is arranged on the periphery of the valve disc 30, and the driving gear 52 is in meshed transmission connection with the tooth-shaped surface 32 of the valve disc; the gear motor 51 operates, and its power output shaft drives the driving gear 52 to rotate, and the driving gear 52 drives the valve disc 30 to rotate.

In the embodiment of the present invention, the tooth surface 32 is provided only on the half circumference of the valve disk 30; in practice, the tooth surface 32 may be configured as a quarter circle (i.e., 90 ° circle), three quarter circle (i.e., 270 ° circle) or any other angular circle of the valve disc 30, as desired for the application, and may form a closed outer ring gear on the entire outer circumferential surface of the valve disc 30.

The valve disc 30 is provided with a limit bump 33 protruding out of the outer peripheral surface of the valve disc 30 along the radial direction, the cavity wall of the inner cavity of the valve body is provided with a limit stop pin 34, the limit stop pin 34 is positioned in the rotation circumferential path of the limit bump 33 of the valve disc 30, and the limit stop pin 34 can be abutted against the radial protruding side surface 33a of the limit bump 33; in this embodiment, the limiting projections 33 are disposed at the outer sides of two ends of the semicircular tooth-shaped surface 32 at the periphery of the valve disc 30, so that the arrangement can play an effective role in circumferential blocking and limiting on the rotation of the valve disc 30, and prevent the tooth profile of the gear ring 32 and the tooth profile of the driving gear 52 from being separated due to excessive rotation of the valve disc 30.

The rotary mechanism of the present embodiment further includes a position sensor 53 provided on the valve body, the position sensor 53 being mounted on top of the valve cover 12 in this embodiment.

The upper sealing element 41 and the lower sealing element 42 in the invention are made of wear-resistant waterproof materials, thereby prolonging the service life of the sealing element and ensuring the sealing effect.

The wear-resistant waterproof material is preferably PTFE material, or a composite material formed by vulcanizing PTFE material and rubber material into a whole.

In this embodiment, the upper seal 41 and the lower seal 42 are both integrally formed; in practical application, the upper sealing element 41 and the lower sealing element 42 can be processed in a split manner and then assembled on the sealing end surfaces of the corresponding upper independent cavity and the lower independent cavity; fig. 18 shows a schematic structural view of the split-structure upper seal 41, which forms one seal unit for each seal channel opening, namely, an upper seal 41-1 with a seal channel opening 1c, an upper seal 41-2 with a seal channel opening 2c, an upper seal 41-3 with a seal channel opening 3c and an upper seal 41-4 with a seal channel opening 4c, and is assembled to the sealing end face of the valve cover 12 in use; according to application requirements, the sealing element can be split by adopting any cutting split mode, and each sealing pipeline port formed after split assembly is matched and communicated with the corresponding subchamber; similarly, the lower sealing member 42 may be configured as a separate structure, which will not be described again.

Embodiment two:

the difference between this embodiment and the first embodiment is that the lower valve body is not provided with the axial mounting hole 26 and the spring 27, but the valve disc 30 is provided with a plurality of pressure relief holes 35, see fig. 17, and the arrangement of the pressure relief holes 35 can effectively balance the pressure of the cooling medium at two sides of the valve disc 30, so as to ensure the floating sealing effect, thereby avoiding the problems of larger friction force and increased abrasion between the valve disc 30 and a certain side sealing element caused by different pressure of the cooling medium at two sides, and prolonging the service life of the valve disc 30 and the sealing element.

The foregoing describes the embodiments of the present invention in detail, but the description is only a preferred embodiment of the invention and should not be construed as limiting the scope of the invention. All equivalent changes and modifications of the invention are intended to fall within the scope of the invention.

Claims

1. A multi-way valve comprising a valve body having an interior cavity, characterized by: a valve disc capable of axially rotating around the valve body is arranged in an inner cavity of the valve body, the valve disc axially separates the inner cavity of the valve body to form an upper independent cavity and a lower independent cavity, a plurality of independent subchambers which are not communicated with each other are formed in each independent cavity, external interfaces which can be connected with external pipelines are arranged at the axial end parts of the corresponding sides of the valve body in each subchamber, the two axial sides of the valve disc are respectively in floating sealing connection with the independent cavities on the two sides through a sealing piece, a sealing flow port which is matched and communicated with the subchamber on the corresponding side is arranged on the sealing piece, each subchamber, the external interfaces arranged on the subchamber and a sealing flow port which is matched and communicated with the subchamber form a cooling medium flow passage, a plurality of axial through flow ports are formed in each valve disc, the cooling medium flow ports which are respectively positioned in the upper independent cavity and the lower independent cavity are communicated with each other to form a cooling medium passage, and the position of each flow port on the periphery of the valve disc in the circumferential direction can be adjusted through rotating the valve disc, so that the cooling medium flow ports are respectively positioned in any independent cavity and any cooling medium flow passage can be formed by the cooling medium flow passage of the valve disc;

the valve body comprises an upper valve body and a lower valve body, a central shaft is arranged at the bottom of the upper valve body, the lower valve body, the valve disc and the sealing element are all provided with shaft holes corresponding to the central shaft, the upper valve body and the lower valve body are fixedly combined into a whole, and the central shaft of the upper valve body axially penetrates through the shaft holes of the valve disc and the shaft holes of the sealing element and stretches into the shaft holes of the lower valve body;

the upper independent cavity and the lower independent cavity are respectively provided with four subchambers, and the valve disc is provided with four valve disc flow ports;

the upper valve body comprises a valve cover, four annular convex hulls are formed on the valve cover around the central shaft, the annular convex hulls are provided with hollow cavities with open bottoms, and each hollow cavity forms a sub-cavity positioned in the upper independent cavity; the four annular convex hulls are respectively a first convex hull, a second convex hull, a third convex hull and a fourth convex hull, the subcavities corresponding to each convex hull are respectively a first subcavities, a second subcavities, a third subcavities and a fourth subcavities, the second convex hull and the fourth convex hull are concentrically arranged on the periphery side of the central shaft, the first convex hull and the third convex hull are concentrically arranged on the periphery of the second convex hull and the fourth convex hull, and corresponding first external interfaces, second external interfaces, third external interfaces and fourth external interfaces are respectively arranged on the first convex hull, the second convex hull, the third convex hull and the fourth convex hull.

2. A multi-way valve according to claim 1, wherein: each subchamber in each independent chamber forms an axial projection surface on the valve disc; the axial projection surface of any subchamber of any independent cavity is at least partially overlapped with the axial projection surfaces of two subchambers of the other independent cavity to form a corresponding partial overlapped surface, and the shape of a valve disc flow passage opening formed on the valve disc corresponds to the shape of the partial overlapped surface; when the valve disc rotates to the position that any valve disc flow port is axially aligned with a part of the overlapping surface, two subchambers forming the part of the overlapping surface are communicated through the valve disc flow port and form the cooling medium passage.

3. A multi-way valve according to claim 1 or 2, characterized in that: sealing surfaces matched with each other are arranged between the sealing element and the sealing end surface of the independent cavity and between the sealing element and the axial disc surface of the valve disc.

4. A multi-way valve according to claim 3, wherein: the sealing element is provided with a bulge on one side surface facing the valve disc, which is a plane or an inclined plane or a curved plane and one side surface facing the independent cavity, the axial sealing end surface of the independent cavity is provided with a hole groove corresponding to the bulge, a matching surface contact is formed between one side plane or the inclined plane or the curved plane of the sealing element and the axial disc surface of the valve disc, and the bulge on the other side surface is connected with the hole groove on the axial sealing end surface of the independent cavity in a matching way.

5. A multi-way valve according to claim 3, wherein: an axial mounting hole is formed in the axial sealing end face of the upper independent cavity or the lower independent cavity, a spring is arranged in the axial mounting hole, one axial end of the spring is abutted to the bottom of the axial mounting hole, and the other axial end of the spring is abutted to a sealing piece positioned on one side of the independent cavity.

6. A multi-way valve according to claim 3, wherein: and pressure relief holes penetrating axially are distributed on the valve disc.

7. A multi-way valve according to claim 1 or 2, characterized in that: the seal is made of a wear-resistant and waterproof material.

8. A multi-way valve as defined in claim 7, wherein: the seal is made of a PTFE material.

9. A multi-way valve as defined in claim 7, wherein: the seal member includes a PTFE layer and a rubber layer, the PTFE layer and the rubber layer being integrally bonded by vulcanization.

10. A multi-way valve according to claim 1 or 2, characterized in that: the valve disc rotating mechanism comprises a gear motor and a driving gear, the gear motor is fixedly arranged on the valve body, a power output shaft of the gear motor stretches into an inner cavity of the valve body and is connected with the driving gear in a gear mode, a tooth-shaped surface is arranged on the periphery of the valve disc, and the driving gear is in meshed transmission connection with the tooth-shaped surface of the valve disc.

11. A multi-way valve as defined in claim 10, wherein: the rotating mechanism further comprises a position sensor, and the position sensor is arranged on the valve body.

12. A multi-way valve according to claim 1 or 2, characterized in that: the valve disc is provided with a limiting lug protruding out of the circumferential surface of the valve disc in the radial direction, the cavity wall of the inner cavity of the valve body is provided with a limiting stop pin, the limiting stop pin is positioned in the rotating circumferential path of the limiting lug of the valve disc, and the limiting stop pin can be abutted against the radial protruding side surface of the limiting lug.

13. A multi-way valve according to claim 1, wherein: the first convex hull and the third convex hull are equal in height and form a concentric outer ring convex hull structure, the second convex hull and the fourth convex hull are equal in height and form a concentric inner ring convex hull structure, and the convex height of the outer ring convex hull structure is larger than that of the inner ring convex hull structure.

14. A multi-way valve as defined in claim 13, wherein: the lower valve body comprises a shell, the shell is provided with a hollow cavity with an open top, a separation rib plate is arranged in the hollow cavity of the shell, the separation rib plate separates the hollow cavity of the shell into four subcavities which surround the periphery of a shaft hole of the lower valve body, the subcavities are respectively a fifth subcavity, a sixth subcavity, a seventh subcavity and an eighth subcavity, and a fifth external interface, a sixth external interface, a seventh external interface and an eighth external interface which are respectively correspondingly communicated with the fifth subcavity, the sixth subcavity, the seventh subcavity and the eighth subcavity are arranged at the bottom of the shell.

15. A multi-way valve as defined in claim 14, wherein: the fifth sub-cavity, the sixth sub-cavity, the seventh sub-cavity and the eighth sub-cavity respectively comprise an arc section and a radial conical section which are mutually communicated and surround the axial center, wherein the arc sections of the fifth sub-cavity and the eighth sub-cavity are respectively positioned at the radial inner ends of the radial conical sections, the arc sections of the sixth sub-cavity and the seventh sub-cavity are respectively positioned at the radial outer ends of the radial conical sections, and the fifth external interface, the sixth external interface and the seventh external interface are respectively arranged on the arc sections of the fifth sub-cavity, the sixth sub-cavity and the seventh sub-cavity, and the eighth external interface is arranged on the radial conical sections of the eighth sub-cavity.

16. A multi-way valve as defined in claim 15, wherein: the four valve disc flow passage openings on the valve disc are respectively a first valve disc flow passage opening, a second valve disc flow passage opening, a third valve disc flow passage opening and a fourth valve disc flow passage opening, wherein the second valve disc flow passage opening and the fourth valve disc flow passage opening are conical openings, the first valve disc flow passage opening and the third valve disc flow passage opening are arc-shaped openings, the two conical openings and the two arc-shaped openings are symmetrically arranged outside the shaft hole of the valve disc in a central symmetry manner, and the two conical openings and the two arc-shaped openings are arranged in a staggered manner along the circumferential direction.

17. A multi-way valve as defined in claim 16, wherein: the sealing element comprises an upper sealing element and a lower sealing element, wherein the upper sealing element is arranged between the valve disc and the upper valve body, the lower sealing element is arranged between the valve disc and the lower valve body, the upper sealing element is provided with sealing fluid ports corresponding to the first subcavity, the second subcavity, the third subcavity and the fourth subcavity one by one, the lower sealing element is provided with sealing fluid ports corresponding to the fifth subcavity, the sixth subcavity, the seventh subcavity and the eighth subcavity one by one, the end faces of the upper sealing element and the lower sealing element, which are respectively oriented to one side of the valve disc, are planes, the end face of the upper sealing element, which is oriented to one side of the upper valve body, is provided with a flange, the end face of the lower sealing element, which is oriented to one side of the lower valve body, is provided with a plurality of positioning bulges, the upper valve body is provided with a plurality of positioning holes, the flange of the upper sealing element is embedded into the annular clamping grooves, and the positioning bulges of the lower sealing element are uniformly embedded into the positioning holes correspondingly.