CN221482734U - Valve element, switching valve, thermal management system and vehicle - Google Patents

Abstract

The disclosure relates to a case, switching valve, thermal management system and vehicle, the case includes the core and runs through at least one runner of core, and the runner includes first runner section and second runner section, and first runner section and second runner section intersect and communicate each other, and the central axis of first runner section and the central axis of second runner section are sharp, and the contained angle between the central axis of first runner section and the central axis of second runner section is the obtuse angle. Because the central axis of the first flow passage section and the central axis of the second flow passage section are both straight lines, the flow passage is convenient to process, and the production cost of the valve core is reduced. In addition, the included angle between the central axis of the first flow passage section and the central axis of the second flow passage section is an obtuse angle, so that the flow resistance of fluid in the flow passage can be reduced, and the performance of the switching valve can be improved.

Description

Valve element, switching valve, thermal management system and vehicle

Technical Field

The disclosure relates to the technical field of switching valves, in particular to a valve core, a switching valve, a thermal management system and a vehicle.

Background

The switching valve is a control valve for controlling the flow form and flow direction of the fluid, and is used for realizing the conduction, the cutting-off and the reversing of the fluid. The switching valve generally includes a valve body having a chamber and a valve body rotatably disposed in the chamber, and a flow passage in the valve body is selectively communicated with a fluid line connected to the switching valve by rotation of the valve body.

In the related art, the flow channels in the valve core are designed to be arc-shaped, for example, two flow channels in the valve core of the four-way valve are arc-shaped flow channels, and the arc-shaped flow channels are inconvenient to process, so that the production cost of the valve core is high.

Disclosure of utility model

An object of the present disclosure is to provide a valve cartridge, a switching valve, a thermal management system, and a vehicle to solve the problems in the related art.

In order to achieve the above object, according to a first aspect of the present disclosure, there is provided a valve core of a switching valve, including a core body and at least one flow passage penetrating the core body, the flow passage including a first flow passage section and a second flow passage section, the first flow passage section and the second flow passage section intersecting and communicating with each other, a central axis of the first flow passage section and a central axis of the second flow passage section are both straight lines, and an included angle between the central axis of the first flow passage section and the central axis of the second flow passage section is an obtuse angle.

Optionally, the first flow channel section has a first flow channel sidewall and the second flow channel section has a second flow channel sidewall;

Wherein the first flow path section further has a first transition connecting wall located at the intersection of at least part of the first flow path section and at least part of the second flow path section, the first transition connecting wall protruding from the second flow path side wall towards the outside of the second flow path section;

And/or the second flow path section further has a second transitional connecting wall located at the intersection of at least part of the first flow path section and at least part of the second flow path section, the second transitional connecting wall protruding from the first flow path side wall towards the outside of the first flow path section.

Optionally, one end of the first transition connecting wall is connected with at least part of the second flow channel side wall, the other end of the first transition connecting wall is connected with one end of the second transition connecting wall, and the other end of the second transition connecting wall is connected with at least part of the first flow channel side wall.

Optionally, the first transition connecting wall includes a first connecting side wall and a first connecting end wall perpendicular to the first connecting side wall, and an extension direction of the first connecting side wall is the same as an extension direction of the first flow channel side wall;

The second transition connecting wall comprises a second connecting side wall and a second connecting end wall perpendicular to the second connecting side wall, and the extending direction of the second connecting side wall is the same as the extending direction of the second flow passage side wall;

The first connecting end wall is connected with at least part of the second flow passage side wall, the second connecting end wall is connected with at least part of the first flow passage side wall, and one end of the first connecting side wall away from the first connecting end wall is connected with one end of the second connecting side wall away from the second connecting end wall.

Optionally, the first transition connecting wall and the second transition connecting wall are symmetrical about an angular bisector of the included angle formed by the central axis of the first flow path section and the central axis of the second flow path section.

Optionally, the first flow channel side wall defines a first through-flow space, the second flow channel side wall defines a second through-flow space, and the area of the radial cross-section of the first through-flow space is equal to the area of the radial cross-section of the second through-flow space.

Optionally, the core body is formed with a first groove and a second groove, the first flow channel section has a first flow channel port, the second flow channel section has a second flow channel port, the first flow channel port is located on the bottom wall of the first groove, and the second flow channel port is located on the bottom wall of the second groove.

Optionally, the area of the bottom wall of the first groove is larger than the area of the first fluid passage opening, and the area of the bottom wall of the second groove is larger than the area of the second fluid passage opening.

Optionally, the first groove has a first notch on the outer surface of the core, the second groove has a second notch on the outer surface of the core, an arc-shaped transitional connection is formed between a mouth wall of the first notch and a side wall of the first groove, and an arc-shaped transitional connection is formed between a mouth wall of the second notch and a side wall of the second groove.

Optionally, the first channel section has a first channel mouth on an outer surface of the core and a first channel side wall inside the core, the second channel section has a second channel mouth on an outer surface of the core and a second channel side wall inside the core, a mouth wall of the first channel mouth is in arc-shaped transitional connection with the first channel side wall, and the second channel mouth is in arc-shaped transitional connection with the second channel side wall.

Optionally, at least part of the radial cross section of the first runner section is circular or semicircular, and at least part of the radial cross section of the second runner section is circular or semicircular.

Optionally, an included angle between the central axis of the first flow channel section and the central axis of the second flow channel section is 108 ° to 120 °.

Optionally, the plurality of flow channels includes a first flow channel and a second flow channel, and the first flow channel and the second flow channel are respectively located at two sides of the longitudinal center plane of the core body.

Optionally, the first flow channel and the second flow channel are symmetrically arranged about the longitudinal centre plane.

Optionally, the core is provided with a transmission groove connected with the rotating rod of the switching valve, at least one end of the transmission groove along the length direction of the transmission groove is an open end, and the open end is used for inserting the rotating rod into the transmission groove.

Optionally, a positioning groove for being matched with a positioning column on a valve body of the switching valve is formed in the core body, and the cross section area of the positioning groove is larger than that of the positioning column; or alternatively

The core body is provided with a positioning column matched with a positioning groove on the valve body of the switching valve, and the cross section area of the positioning column is smaller than that of the positioning groove.

Optionally, the notch of the positioning groove is formed as a horn mouth.

Optionally, the ratio of the volume of the flow channel to the volume of the core is 0.21 to 0.28.

Optionally, the core is a sphere.

Optionally, the surface roughness of the core is 0.4 μm to 0.8 μm.

According to a second aspect of the present disclosure, there is provided a switching valve including the valve spool described above.

According to a third aspect of the present disclosure, there is provided a thermal management system comprising the above-described switching valve.

According to a fourth aspect of the present disclosure, there is provided a vehicle comprising the vehicle thermal management system described above.

Through the technical scheme, the flow channel in the valve core comprises the first flow channel section and the second flow channel section, and the central axis of the first flow channel section and the central axis of the second flow channel section are all straight lines, so that the processing of the flow channel can be facilitated. For example, the first and second flow path segments may be formed by punching a straight line through a core with a punching tool (e.g., a cylindrical drill bit) and intersecting and communicating the first and second flow path segments to form a flow path through the core. Compared with the technical scheme that the flow channel in the valve core is an arc-shaped flow channel in the related art, the flow channel in the valve core provided by the disclosure is convenient to process, and the production cost of the valve core is reduced.

In addition, because the included angle between the central axis of the first flow passage section and the central axis of the second flow passage section is an obtuse angle, the flow resistance of fluid in the flow passage can be reduced, and the performance of the switching valve is improved.

Additional features and advantages of the present disclosure will be set forth in the detailed description which follows.

Drawings

The accompanying drawings are included to provide a further understanding of the disclosure, and are incorporated in and constitute a part of this specification, illustrate the disclosure and together with the description serve to explain, but do not limit the disclosure. In the drawings:

FIG. 1 is a schematic perspective view of a valve cartridge according to one embodiment of the present disclosure;

FIG. 2 is a schematic cross-sectional view of a valve cartridge provided by one embodiment of the present disclosure;

FIG. 3 is an enlarged partial schematic view at A in FIG. 2;

FIG. 4 is an enlarged partial schematic view at B in FIG. 2;

FIG. 5 is a schematic perspective view of a valve cartridge according to another embodiment of the present disclosure;

FIG. 6 is a schematic cross-sectional view of a valve cartridge provided by another embodiment of the present disclosure;

FIG. 7 is an enlarged partial schematic view at C in FIG. 6;

FIG. 8 is a partially enlarged schematic illustration of FIG. 6 at D;

FIG. 9 is a schematic perspective view of a switching valve according to one embodiment of the present disclosure;

FIG. 10 is a schematic bottom view of a switching valve provided in one embodiment of the present disclosure;

FIG. 11 is a schematic cross-sectional view taken along line F-F in FIG. 10;

FIG. 12 is an enlarged partial schematic view at E in FIG. 11;

FIG. 13 is a schematic side view of a switching valve provided by one embodiment of the present disclosure;

Fig. 14 is a schematic cross-sectional view taken along line G-G in fig. 13.

Description of the reference numerals

1-A valve core; 2-a valve body; 3-switching valve; 10-core; 11-a first groove; 111-a first notch; 12-a second groove; 121-a second notch; 20-flow channels; 21-a first flow path section; 211-a first flow channel sidewall; 212-a first transition connecting wall; 2121-first connecting sidewalls; 2122-a first connecting end wall; 22-a second flow path section; 221-a second flow channel sidewall; 222-a second transition connecting wall; 2221-second connection sidewall; 2222-second connecting end wall; 23-a first fluid port; 24-a second fluid port; 25-a first flow channel; 26-a second flow path; 27-a first through-flow space; 28-a second through-flow space; 30-a transmission groove; 31-open end; 40-rotating a rod; 50-positioning grooves; 51-flare; 60-positioning columns; 70-longitudinal center plane; 80-an angular bisector; 90-accommodating cavity; 91-spool seals.

Detailed Description

Specific embodiments of the present disclosure are described in detail below with reference to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the disclosure, are not intended to limit the disclosure.

In the present disclosure, unless otherwise indicated, terms of orientation such as "upper (top), lower (bottom)" are generally defined with reference to the direction of the drawing of the corresponding drawings, and refer specifically to fig. 11, while "inner, outer" refer to inner and outer of the corresponding component profiles, and furthermore, the terms "first", "second", etc. are used for distinguishing one element from another without having a sequential or importance nature.

In the description of the present disclosure, it should also be noted that, unless explicitly stated and limited otherwise, the terms "disposed," "connected," and "mounted" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, integrally connected, directly connected, or indirectly connected through an intermediary. The specific meaning of the terms in this disclosure will be understood by those of ordinary skill in the art as the case may be.

As shown in fig. 1 to 8, according to a first aspect of the present disclosure, there is provided a valve spool 1 of a switching valve 3, including a spool 10 and at least one flow passage 20 penetrating the spool 10, the flow passage 20 including a first flow passage section 21 and a second flow passage section 22, the first flow passage section 21 and the second flow passage section 22 intersecting and communicating with each other, a central axis of the first flow passage section 21 and a central axis of the second flow passage section 22 being straight lines, an angle between the central axis of the first flow passage section 21 and the central axis of the second flow passage section 22 being an obtuse angle.

By the above technical solution, since the flow passage 20 in the valve core 1 includes the first flow passage section 21 and the second flow passage section 22, and the central axis of the first flow passage section 21 and the central axis of the second flow passage section 22 are both straight lines, the processing of the flow passage 20 can be facilitated. For example, the first and second flow path sections 21 and 22 may be respectively processed by punching a hole in a straight line on the core 10 by a punching tool (e.g., a cylindrical drill), and intersecting and communicating the first and second flow path sections 21 and 22 with each other, thereby forming the flow path 20 penetrating the core 10 by the first and second flow path sections 21 and 22 together. Compared with the technical scheme that the flow channel 20 in the valve core 1 is an arc-shaped flow channel in the related art, the flow channel 20 in the valve core 1 provided by the disclosure is convenient to process, and the production cost of the valve core 1 is reduced.

In addition, the included angle between the central axis of the first flow passage section 21 and the central axis of the second flow passage section 22 is an obtuse angle, so that the flow resistance of the fluid in the flow passage 20 can be reduced, and the performance of the switching valve 3 can be improved.

Here, the valve element 1 provided in the present disclosure may be used for any suitable type of switching valve, for example, a multi-way switching valve such as a four-way valve, a six-way valve, and the like, which is not limited in the present disclosure.

The angle between the central axis of the first channel section 21 and the central axis of the second channel section 22 may be any suitable angle, and as an embodiment, the angle between the central axis of the first channel section 21 and the central axis of the second channel section 22 may be 108 ° to 120 °, so that the flow resistance of the flow channel 20 to the fluid is small.

In order to enable the first and second flow path sections 21, 22 to intersect and communicate with each other, as an embodiment the first flow path section 21 has a first flow path side wall 211 and the second flow path section 22 has a second flow path side wall 221, the first flow path section 21 further has a first transition connecting wall 212, the first transition connecting wall 212 being located at the intersection of at least part of the first flow path section 21 and at least part of the second flow path section 22, the first transition connecting wall 212 protruding out of the second flow path side wall 221 towards the outside of the second flow path section 22.

As another embodiment, referring to fig. 2 and 3, the first channel section 21 has a first channel side wall 211, the second channel section 22 has a second channel side wall 221, the second channel section 22 further has a second transitional connecting wall 222, the second transitional connecting wall 222 is located at the intersection of at least part of the first channel section 21 and at least part of the second channel section 22, and the second transitional connecting wall 222 protrudes from the first channel side wall 211 towards the outside of the first channel section 21.

As yet another embodiment, as shown in fig. 6 and 7, the first channel section 21 has a first channel side wall 211, the second channel section 22 has a second channel side wall 221, the first channel section 21 further has a first transition connecting wall 212, the first transition connecting wall 212 is located at the intersection of at least part of the first channel section 21 and at least part of the second channel section 22, the first transition connecting wall 212 protrudes from the second channel side wall 221 towards the outside of the second channel section 22, the second channel section 22 further has a second transition connecting wall 222, the second transition connecting wall 222 is located at the intersection of at least part of the first channel section 21 and at least part of the second channel section 22, and the second transition connecting wall 222 protrudes from the first channel side wall 211 towards the outside of the first channel section 21.

When the flow channel 20 is machined, one end of the first flow channel section 21, which is close to the second flow channel section 22, can be machined to protrude from the second flow channel side wall 221 of the second flow channel section 22, so that the first transitional connecting wall 212 is formed, the first flow channel section 21 and the second flow channel section 22 are intersected and communicated with each other, and the communication part of the first flow channel section 21 and the second flow channel section 22 has enough flow area; and/or, the end of the second flow path section 22 near the first flow path section 21 is processed to protrude from the first flow path side wall 211 of the first flow path section 21, thereby forming the second transitional connecting wall 222, intersecting and communicating the first flow path section 21 and the second flow path section 22 with each other, and providing a sufficient flow area at the communication point of the first flow path section 21 and the second flow path section 22.

In addition, the first transitional coupling wall 212 protrudes outward from the second flow path sidewall 221, and/or the second transitional coupling wall 222 protrudes outward from the first flow path sidewall 211, which may increase the space at the inflection point of the flow path 20, reduce the resistance to fluid flow at the inflection point of the flow path 20, and reduce the impact and wear of fluid on the inflection point of the flow path 20. It will be appreciated that the inflection of the flow channel 20 is the intersection of the first 21 and second 22 flow channel sections.

For the embodiment of the second flow path section 22 having the second transitional coupling wall 222, as shown in fig. 3, the second transitional coupling wall 222 may include a second transitional coupling side wall 2221 and a second transitional coupling end wall 2222 perpendicular to the second transitional coupling side wall 2221, where the second transitional coupling side wall 2221 extends in the same direction as the second flow path side wall 221, one end of the second transitional coupling side wall 2221 is connected to the second flow path side wall 221, the other end of the second transitional coupling side wall 2221 is connected to one end of the second transitional coupling end wall 2222, and the other end of the second transitional coupling end wall 2222 is connected to the first flow path side wall 211.

When the first runner section 21 and the second runner section 22 are opened by the punching tool, the first runner section 21 may be opened first, then the second runner section 22 may be opened, and the opening length of the second runner section 22 may be longer than the opening length of the first runner section 21, so as to form the second transitional connecting wall 222, so that the first runner section 21 and the second runner section 22 intersect and are communicated. That is, the second transitional coupling wall 222 may be formed when the punching tool opens the second flow path section 2, and the first flow path section 21 and the second flow path section 22 may be intersected and communicate by opening the first flow path section 21 and the second flow path section 22 in a straight direction by the punching tool.

For the embodiment in which the first flow path section 21 has the first transitional coupling wall 212 and the second flow path section 22 has the second transitional coupling wall 222, as shown in fig. 6 and 7, the first transitional coupling wall 212 includes a first coupling sidewall 2121 and a first coupling end wall 2122 perpendicular to the first coupling sidewall 2121, the first coupling sidewall 2121 extends in the same direction as the first flow path sidewall 211, the second transitional coupling wall 222 includes a second coupling sidewall 2221 and a second coupling end wall 2222 perpendicular to the second coupling sidewall 2221, the second coupling sidewall 2221 extends in the same direction as the second flow path sidewall 221, the first coupling end wall 2122 is connected to at least a portion of the second flow path sidewall 221, and the second coupling end wall 2222 is connected to at least a portion of the first flow path sidewall 211, and an end of the first coupling sidewall 2121 remote from the first coupling end wall 2122 is connected to an end of the second coupling sidewall 2221 remote from the second coupling end wall 2222.

When the first flow path section 21 and the second flow path section 22 are opened by the punching tool, at least part of the flow path walls of the first flow path section 21 and at least part of the flow path walls of the second flow path section 22 may be intersected, for example, intersected to form an "X" shape as shown in fig. 7, so as to form the first transition connecting wall 212 and the second transition connecting wall 222, thereby realizing intersection and communication of the first flow path section 21 and the second flow path section 22. That is, the first and second transitional coupling walls 212 and 222 may be formed when the punching tool opens the second flow path section 2, and the first and second flow path sections 21 and 22 may be intersected and communicate by opening the first and second flow path sections 21 and 22 in a straight direction by the punching tool.

Here, the opening length of the first flow path section 21 and the opening length of the second flow path section 22 may be the same or different, and the present disclosure is not limited thereto.

Furthermore, in different operating states of the switching valve 3, the fluid may flow through the flow channel 20 in different flow directions, so that the flow resistances of the fluid in the different flow directions at the inflection point of the flow channel 20 (i.e., the intersection of the first flow channel section 21 and the second flow channel section 22) are substantially the same, as shown in fig. 6 and 7, the first transition connecting wall 212 and the second transition connecting wall 222 may be symmetrical about the angular bisector 80 of the angle formed by the central axis of the first flow channel section 21 and the central axis of the second flow channel section 22, and the flow resistances of the fluid in different flow directions at the inflection point of the flow channel 20 may be made substantially the same.

In order to make the resistances of the fluid flowing in the different directions in the flow passage 20 substantially the same, as shown in fig. 3 and 6, the first flow passage sidewall 211 defines a first through-flow space 27, the second flow passage sidewall 221 defines a second through-flow space 28, and the area of the radial cross-section of the first through-flow space 27 may be equal to the area of the radial cross-section of the second through-flow space 28, as an embodiment. Since the area of the radial cross section of the first through-flow space 27 is equal to the area of the radial cross section of the second through-flow space 28, the resistance to the fluid flowing through the first through-flow space 27 and then through the second through-flow space 28 is substantially the same as the resistance to the fluid flowing through the second through-flow space 28 and then through the first through-flow space 27, so that the resistance to the fluid flowing in different directions in the flow passage 20 can be substantially the same.

Here, the radial cross section of the first through-flow space 27 refers to a cross section obtained by cutting along the radial direction of the first through-flow space 27 (i.e., the radial direction of the first flow path section 21, i.e., the direction perpendicular to the axial direction of the first through-flow space 27/the first flow path section 21), and the radial cross section of the second through-flow space 28 is a cross section obtained by cutting along the radial direction of the second through-flow space 28 (i.e., the radial direction of the second flow path 22, i.e., the direction perpendicular to the axial direction of the second through-flow space 28/the second flow path 22).

In addition, in order to facilitate the punching and positioning of the punching tool when the flow passage 20 is processed, as an embodiment, as shown in fig. 5, 6 and 8, a first groove 11 and a second groove 12 are formed on the core 10, the first flow passage section 21 has a first flow passage opening 23, the second flow passage section 22 has a second flow passage opening 24, the first flow passage opening 23 is located on the bottom wall of the first groove 11, and the second flow passage opening 24 is located on the bottom wall of the second groove 12.

Before the first runner section 21 and the second runner section 22 are opened by the punching tool, the first groove 11 and the second groove 12 are opened on the core 10, then the first runner section 21 is opened from the bottom wall of the first groove 11, and the second runner section 22 is opened from the bottom wall of the second groove 12, so that the first runner port 23 is located on the bottom wall of the first groove 11, and the second runner port 24 is located on the bottom wall of the second groove. When punching the first runner section 21, the positioning of the punching tool is realized through the first groove 11, and when punching the second runner section 22, the positioning of the punching tool is realized through the second groove 12, so that the positioning speed of the punching tool when processing the runner 20 can be improved, and the processing efficiency of the runner 20 can be further improved.

Of course, in other embodiments, as shown in fig. 1 and 2, the first and second flow path segments 21, 22 may also be formed by perforating the outer surface of the core 10 directly with a perforating tool.

In order to avoid interference between the punching tool and the sidewall of the first groove 11 or the sidewall of the second groove 12 during processing of the flow channel 20, as an embodiment, as shown in fig. 5, 6 and 8, the area of the bottom wall of the first groove 11 may be larger than the area of the first flow channel opening 23, and the area of the bottom wall of the second groove 12 may be larger than the area of the second flow channel opening 24.

The area of the bottom wall of the first groove 11 refers to the area of the bottom wall of the first groove 11 before the first flow passage 23 is formed, and the area of the bottom wall of the second groove 12 refers to the area of the bottom wall of the second groove 12 before the second flow passage 24 is formed.

Since the punching tool may be disposed obliquely to the bottom wall of the first groove 11 during the process of machining the first flow path section 21, the area of the bottom wall of the first groove 11 is larger than the area of the first flow path opening 23, so that the punching tool can be prevented from interfering with the side wall of the first groove 11. Similarly, since the punching tool may be disposed obliquely to the bottom wall of the second groove 12 during the process of machining the second flow path section 22, the area of the bottom wall of the second groove 12 is larger than the area of the second flow path opening 24, so that the punching tool can be prevented from interfering with the side wall of the second groove 12.

In addition, as shown in fig. 11, a valve seat assembly is generally disposed in the cavity 90 of the valve body 2, and the valve seat assembly includes a valve element seal 91 for sealing contact with the valve element 1, and the valve element seal 91 is used for preventing leakage of fluid from the contact portion between the valve seat assembly and the valve element 1.

In order to reduce friction with the valve seat assembly or the valve seat seal 91 during rotation of the valve spool 1, as one embodiment, as shown in fig. 5, 6 and 8, the first groove 11 has a first notch 111 on the outer surface of the core 10, the second groove 12 has a second notch 121 on the outer surface of the core 10, and the mouth wall of the first notch 111 is in arc-shaped transition with the side wall of the first groove 11, and the mouth wall of the second notch 121 is in arc-shaped transition with the side wall of the second groove 12. Through arc transitional coupling between the mouth wall of first notch 111 and the lateral wall of first recess 11, can reduce the friction between the lateral wall of first recess 11 and the case sealing member 91 of case 1 rotation in-process, through arc transitional coupling between the mouth wall of second notch 121 and the lateral wall of second recess 12, can reduce the friction between the lateral wall of second recess 12 and the case sealing member 91 of case 1 rotation in-process to reduce the friction between case 1 whole and case sealing member 91 of case in the rotation in-process, and then reduce the rotation resistance of case 1.

As another embodiment, as shown in fig. 1, 2 and 4, the first flow channel section 21 has a first flow channel opening 23 on the outer surface of the core 10 and a first flow channel side wall 211 inside the core 10, the second flow channel section 22 has a second flow channel opening 24 on the outer surface of the core 10 and a second flow channel side wall 221 inside the core 10, and the opening wall of the first flow channel opening 23 is in arc-shaped transitional connection with the first flow channel side wall 211, and the second flow channel opening 24 is in arc-shaped transitional connection with the second flow channel side wall 221.

The arc transitional connection between the mouth wall of the first fluid passage mouth 23 and the first fluid passage side wall 211 can reduce the friction between the first fluid passage side wall 211 and the valve core sealing piece 91 in the rotation process of the valve core 1, the arc transitional connection between the second fluid passage mouth 24 and the second fluid passage side wall 221 can reduce the friction between the second fluid passage side wall 221 and the valve core sealing piece 91 in the rotation process of the valve core 1, and the arrangement can reduce the friction between the valve core 1 and the valve core sealing piece 91 in the rotation process of the valve core 1, so that the rotation resistance of the valve core 1 can be reduced.

The present disclosure is not limited to the radial cross-sectional shape of the first and second flow path sections 21, 22, and the radial cross-sections of the first and second flow path sections 21, 22 may be any suitable shape, for example, as shown in fig. 1 and 5, at least a portion of the radial cross-section of the first flow path section 21 may be circular; or at least part of the radial cross-section of the first flow channel section 21 may also be semi-circular.

Here, the semicircle refers to a lack of circle having a straight edge with a central angle smaller than 360 ° and is not limited to a semicircle, and the central angle of the semicircle may be 180 °.

Further, as shown in fig. 2 and 6, the flow passage 20 may be plural, the plural flow passages 20 may include a first flow passage 25 and a second flow passage 26, and the first flow passage 25 and the second flow passage 26 may be located on both sides of the longitudinal center plane 70 of the core 10, respectively. Here, the longitudinal center plane 70 of the core 10 refers to a plane passing through the center of the core 10 in the vertical direction, as shown in fig. 2 and 6.

The first flow channel 25 and the second flow channel 26 are respectively located at two sides of the longitudinal center surface 70 of the core 10, so that the first flow channel 25 and the second flow channel 26 do not exceed the center of the core 10 and keep a certain distance from the center of the core 10, thereby being beneficial to reducing the influence on the structural strength of the core 10 caused by opening the flow channel 20.

By means of the first flow channel 25 and the second flow channel 26, two-by-two communication between at least four fluid lines connected to the switching valve 3 can be achieved, and by means of the rotating core 10, a shut-off and a commutation between at least four fluid lines can be achieved. For embodiments in which the number of first and second flow passages 25, 26 is one, the valve spool 1 may be adapted for a four-way valve. Of course, the number of the first flow passages 25 may be plural, and the number of the second flow passages 26 may be plural.

The specific positions of the first flow channel 25 and the second flow channel 26 are not limited in the present disclosure, as an embodiment, as shown in fig. 2 and fig. 6, the first flow channel 25 and the second flow channel 26 may be symmetrically disposed about the longitudinal center plane 70, so that two fluid pipelines connected to the switching valve 3 may be conducted through the first flow channel 25, and also may be conducted through the second flow channel 26, which is beneficial to reducing the assembly difficulty of the core 10 and the valve body 2.

In order to facilitate the assembly between the core 10 and the rotating rod 40 of the switching valve 3, as shown in fig. 1, 6 and 11, as an embodiment, a transmission groove 30 for connecting with the rotating rod 40 of the switching valve 3 is provided on the core 10, and at least one end of the transmission groove 30 along the length direction thereof is an open end 31, and the open end 31 is used for inserting the rotating rod 40 into the transmission groove 30. Since at least one end of the transmission groove 30 in the length direction thereof is the open end 31, the transmission rod can be inserted into the transmission groove 30 from the notch of the transmission groove 30, or can be inserted into the transmission groove 30 from the open end 31 of the transmission groove 30, thereby facilitating the assembly between the core 10 and the rotating rod 40 of the switching valve 3.

To facilitate positioning between the core 10 and the valve body 2, as an embodiment, as shown in fig. 11 and 12, a positioning groove 50 for being engaged with a positioning post 60 on the valve body 2 of the switching valve 3 is provided on the core 10, the cross-sectional area of the positioning groove 50 is set to be larger than that of the positioning post 60, or a positioning post 60 for being engaged with the positioning groove 50 on the valve body 2 of the switching valve 3 is provided on the core 10, and the cross-sectional area of the positioning post 60 is set to be smaller than that of the positioning groove 50.

In the process of installing the core 10 and the valve body 2, the positioning column 60 can be inserted into the positioning groove 50 to realize the approximate positioning between the core 10 and the valve body 2, so that the method is simple and convenient. In addition, since the cross-sectional area of the positioning groove 50 is set to be larger than that of the positioning post 60, after the centering adjustment of the core 10 and the valve body 2 is completed, a gap can be provided between the circumferential side of the positioning post 60 and the positioning groove 50, so that the rotational resistance of the valve body 2 to the core 10 can be reduced.

Alternatively, the locating posts 60 on the valve body 2, or the locating slots 50 on the valve body 2, may be located at the bottom of the valve body 2.

In order to facilitate insertion of the positioning post 60 into the positioning groove 50, as one embodiment, the notch of the positioning groove 50 is formed as a flare 51, as shown in fig. 12. During the process of inserting the positioning column 60 into the positioning groove 50, the positioning column 60 can be inserted into the positioning groove 50 more easily by avoiding the end of the positioning column 60 by the flare 51.

The volume of the flow channel 20 and the volume of the core 10 of the present disclosure may be configured to have any suitable ratio, which is not limited in the present disclosure, and as an embodiment, the ratio of the volume of the flow channel 20 to the volume of the core 10 may be 0.21 to 0.28, which may enable the flow channel 20 to have a larger flow area. For embodiments in which the flow channels 20 are multiple (e.g., embodiments in which the flow channels 20 include a first flow channel 25 and a second flow channel 26 as described above), it is understood that the ratio of the volume of the flow channels 20 to the volume of the core 10 herein refers to the ratio of the volume of each flow channel 20 to the volume of the core 10.

The present disclosure does not limit the shape of the core 10, and as an embodiment, as shown in fig. 1 and 6, the core 10 may be a sphere, so that the flow area of the flow channel 20 can be designed to be larger, and rotational friction between the outer surface of the core 10 and the valve seat assembly or other structures may also be reduced. As another embodiment, the core 10 may be a cylinder.

In addition, in order to reduce rotational friction between the outer surface of the core 10 and the valve seat assembly or other structure, the surface roughness of the core 10 may be 0.4 μm to 0.8 μm, which is advantageous in reducing friction between the valve element 1 and the valve seat assembly (e.g., the valve element seal 91 of the valve seat assembly) or other structure during rotation, and may provide good sealing between the outer surface of the core 10 and the valve seat assembly.

According to a second aspect of the present disclosure, as shown in fig. 9 to 14, there is provided a switching valve 3 including the valve spool 1 described above.

Here, the switching valve 3 may be a three-way valve, a four-way valve, a five-way valve, or the like, and the specific type of the switching valve 3 is not limited in the present disclosure.

According to a third aspect of the present disclosure, there is provided a thermal management system comprising the above-described switching valve 3.

According to a fourth aspect of the present disclosure, there is provided a vehicle comprising the vehicle thermal management system described above.

The preferred embodiments of the present disclosure have been described in detail above with reference to the accompanying drawings, but the present disclosure is not limited to the specific details of the embodiments described above, and various simple modifications may be made to the technical solutions of the present disclosure within the scope of the technical concept of the present disclosure, and all the simple modifications belong to the protection scope of the present disclosure.

In addition, the specific features described in the foregoing embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, the present disclosure does not further describe various possible combinations.

Moreover, any combination between the various embodiments of the present disclosure is possible as long as it does not depart from the spirit of the present disclosure, which should also be construed as the disclosure of the present disclosure.

Claims (23)

1. The utility model provides a case of switching valve, its characterized in that includes the core and runs through at least one runner of core, the runner includes first runner section and second runner section, first runner section with second runner section intersects and communicates each other, the central axis of first runner section with the central axis of second runner section is straight line, the central axis of first runner section with the contained angle between the central axis of second runner section is the obtuse angle.

2. The valve cartridge of claim 1, wherein the first flow passage section has a first flow passage sidewall and the second flow passage section has a second flow passage sidewall;

Wherein the first flow path section further has a first transition connecting wall located at the intersection of at least part of the first flow path section and at least part of the second flow path section, the first transition connecting wall protruding from the second flow path side wall towards the outside of the second flow path section; and/or the second flow path section further has a second transitional connecting wall located at the intersection of at least part of the first flow path section and at least part of the second flow path section, the second transitional connecting wall protruding from the first flow path side wall towards the outside of the first flow path section.

3. The valve cartridge of claim 2, wherein one end of the first transition wall is connected to at least a portion of the second flow path sidewall, the other end of the first transition wall is connected to one end of the second transition wall, and the other end of the second transition wall is connected to at least a portion of the first flow path sidewall.

4. The valve cartridge of claim 3, wherein the first transition connecting wall comprises a first connecting sidewall and a first connecting end wall perpendicular to the first connecting sidewall, the first connecting sidewall extending in the same direction as the first flow passage sidewall;

The second transition connecting wall comprises a second connecting side wall and a second connecting end wall perpendicular to the second connecting side wall, and the extending direction of the second connecting side wall is the same as the extending direction of the second flow passage side wall;

The first connecting end wall is connected with at least part of the second flow passage side wall, the second connecting end wall is connected with at least part of the first flow passage side wall, and one end of the first connecting side wall away from the first connecting end wall is connected with one end of the second connecting side wall away from the second connecting end wall.

5. The valve cartridge of claim 3, wherein the first transition wall and the second transition wall are symmetrical about an angular bisector of the included angle formed by a central axis of the first flow passage segment and a central axis of the second flow passage segment.

6. The valve cartridge of claim 2, wherein the first flow passage sidewall defines a first through-flow space and the second flow passage sidewall defines a second through-flow space, the first through-flow space having a radial cross-section with an area equal to the radial cross-section of the second through-flow space.

7. The valve cartridge of claim 1, wherein the cartridge body has a first groove and a second groove formed therein, the first flow path segment having a first flow path port and the second flow path segment having a second flow path port, the first flow path port being located on a bottom wall of the first groove and the second flow path port being located on a bottom wall of the second groove.

8. The valve cartridge of claim 7, wherein an area of a bottom wall of the first groove is greater than an area of the first fluid passage opening, and an area of a bottom wall of the second groove is greater than an area of the second fluid passage opening.

9. The valve cartridge of claim 7, wherein the first groove has a first notch on an outer surface of the core and the second groove has a second notch on an outer surface of the core, an arcuate transition between a mouth wall of the first notch and a sidewall of the first groove, and an arcuate transition between a mouth wall of the second notch and a sidewall of the second groove.

10. The valve cartridge of claim 1, wherein the first flow passage segment has a first flow passage opening on an outer surface of the core and a first flow passage sidewall on an inner portion of the core, the second flow passage segment has a second flow passage opening on an outer surface of the core and a second flow passage sidewall on an inner portion of the core, the first flow passage opening has an arcuate transition between the first flow passage sidewall and the mouth wall, and the second flow passage opening has an arcuate transition between the second flow passage sidewall and the mouth wall.

11. The valve cartridge of claim 1, wherein at least a portion of the first flow path segment is circular or semi-circular in radial cross-section and at least a portion of the second flow path segment is circular or semi-circular in radial cross-section.

12. The valve cartridge of claim 1, wherein an angle between a central axis of the first flow path segment and a central axis of the second flow path segment is 108 ° to 120 °.

13. The valve cartridge of any one of claims 1-12, wherein the plurality of flow passages includes a first flow passage and a second flow passage, the first flow passage and the second flow passage being located on either side of a longitudinal center plane of the cartridge body, respectively.

14. The valve cartridge of claim 13, wherein the first flow passage and the second flow passage are symmetrically disposed about the longitudinal center plane.

15. The valve cartridge according to any one of claims 1 to 12, wherein a transmission groove for connection with a rotating rod of the switching valve is provided on the core, and at least one end of the transmission groove in a length direction thereof is an open end for insertion of the rotating rod into the transmission groove.

16. The valve spool according to any one of claims 1 to 12, characterized in that a positioning groove for cooperation with a positioning post on a valve body of the switching valve is provided on the spool, a cross-sectional area of the positioning groove being set larger than a cross-sectional area of the positioning post; or alternatively

The core body is provided with a positioning column matched with a positioning groove on the valve body of the switching valve, and the cross section area of the positioning column is smaller than that of the positioning groove.

17. The valve cartridge of claim 16, wherein the notch of the detent groove is formed as a flare.

18. The valve cartridge of any one of claims 1-12, wherein a ratio of a volume of the flow passage to a volume of the core is 0.21-0.28.

19. The valve cartridge of any one of claims 1-12, wherein the core is a sphere.

20. The valve cartridge according to any one of claims 1 to 12, wherein the surface roughness of the core body is 0.4 μm to 0.8 μm.

21. A switching valve comprising the valve spool of any one of claims 1-20.

22. A thermal management system comprising the switching valve of claim 21.

23. A vehicle comprising the vehicle thermal management system of claim 22.