CN115875483A

CN115875483A - Control valve

Info

Publication number: CN115875483A
Application number: CN202111149071.4A
Authority: CN
Inventors: 请求不公布姓名
Original assignee: Zhejiang Sanhua Automotive Components Co Ltd
Current assignee: Zhejiang Sanhua Automotive Components Co Ltd
Priority date: 2021-09-29
Filing date: 2021-09-29
Publication date: 2023-03-31

Abstract

The invention discloses a control valve, which is provided with an accommodating cavity, a first channel and a second channel, wherein the control valve comprises a valve body and a valve core, the valve body comprises a side wall part, the first channel is positioned on the side wall part, at least part of the valve core is positioned in the accommodating cavity, and the second channel is positioned on the valve core; the control valve is also provided with a first port and a second port, the first port is positioned on the side wall part and is communicated with the first channel, the second port is positioned on the valve core, the valve core is also provided with a flow port, and the flow port and the second port are respectively arranged at two ends of the second channel; the control valve further comprises a sealing assembly, the sealing assembly is located between the side wall portion and the valve core along the radial direction of the valve core, the sealing assembly comprises a conducting channel, the conducting channel is communicated with the first port through the first channel, the orthographic projection of the wall portion of the flow port is at least partially overlapped with the orthographic projection of the conducting channel along the radial direction of the valve core, and the orthographic projection of the wall portion of the second port is located outside the orthographic projection of the conducting channel; this enables sealing of the control valve and simplifies the construction of the sealing assembly.

Description

Control valve

Technical Field

The invention relates to the field of fluid control, in particular to a control valve.

Background

The control valve can control the fluid of a plurality of flow paths, and along with the increase of the number of the flow paths controlled by a user to the control valve, the structure of the sealing element is more complicated for realizing the sealing of the control valve.

Therefore, it is desirable to design a new control valve, which can achieve the sealing performance and simplify the structure of the sealing member.

Disclosure of Invention

The invention aims to provide a control valve, which can realize the sealing of the control valve and simplify the structure of a sealing assembly.

The embodiment of the invention provides a control valve, which is provided with a containing cavity, a first channel and a second channel, and comprises a valve body and a valve core, wherein the valve body comprises a side wall part which forms at least part of the wall part of the containing cavity;

the control valve further has a first port located in the side wall portion and communicating with the first passage, and a second port located in the spool, the spool further having a communication port, the communication port and the second port being provided at both ends of the second passage;

the control valve further comprises a sealing assembly, the sealing assembly is located between the side wall portion and the valve core along the radial direction of the valve core, the sealing assembly comprises a conducting channel, the conducting channel is communicated with the first port through the first channel, the orthographic projection of the wall portion of the flow port at least partially overlaps with the orthographic projection of the conducting channel along the radial direction of the valve core, and the orthographic projection of the wall portion of the second port is located outside the orthographic projection of the conducting channel.

According to the control valve provided by the embodiment of the invention, the control valve is provided with the first port and the second port, the first port is positioned on the side wall part of the valve body and is communicated with the first channel, the second port is positioned on the valve core and is communicated with the second channel, and the communication channel of the sealing assembly is communicated with the first port through the first channel, at the moment, the sealing assembly seals the first port, and the orthographic projection of the communication port is at least partially overlapped with the orthographic projection of the communication channel, so that the communication or the closing of the communication port and the communication channel can be realized when the valve core rotates.

Drawings

FIG. 1 is an exploded view of a control valve according to one embodiment of the present invention;

FIG. 2 is a partially exploded perspective view of a control valve according to one embodiment of the present invention;

FIG. 3 is a schematic cross-sectional view of a control valve shown in FIG. 2;

FIG. 4 is a schematic illustration in partial cross-sectional configuration of the control valve shown in FIG. 2 in one of its positions;

FIG. 5 is a schematic cross-sectional view of the control valve shown in FIG. 2 with the first and second ports open;

FIG. 6 is a schematic cross-sectional view of one of the control valves shown in FIG. 2 with the first and second ports closed;

FIG. 7 is a schematic structural view of a seal assembly provided in accordance with an embodiment of the present invention;

FIG. 8 is a schematic perspective view of a valve body according to an embodiment of the present invention;

FIG. 9 is a cross-sectional structural schematic view of the valve body shown in FIG. 8;

FIG. 10 is a schematic perspective view of a valve cartridge according to an embodiment of the present invention;

fig. 11 is a schematic cross-sectional structure view of the valve cartridge shown in fig. 10.

Detailed Description

Features and exemplary embodiments of various aspects of the present invention will be described in detail below, and in order to make objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. Relational terms such as "first" and "second," and the like, may be used solely to distinguish one element from another element having the same name, without necessarily requiring or implying any actual such relationship or order between such elements.

The embodiment of the invention provides a control valve which can be used for a vehicle thermal management system, particularly can be used for a cooling liquid circulating system, can also be used for an air conditioner refrigerant circulating system, and can achieve the functions of conducting and switching a flow path of the thermal management system.

As shown in fig. 1 to 7, an embodiment of the present invention provides a control valve 1, where the control valve 1 includes a valve body 10, a valve core 20, and a sealing assembly 30, the control valve 1 has a receiving cavity 101, the valve body 10 includes a side wall portion 11, the side wall portion 11 forms at least a partial wall portion of the receiving cavity 101, at least a portion of the valve core 20 is located in the receiving cavity 101 and is capable of rotating, and the sealing assembly 30 is located between the side wall portion 11 and the valve core 20 along a radial direction of the valve core 20 for sealing the control valve 1.

To realize the fluid circulation, the control valve 1 further has a first channel 12, a second channel 21, a first port P1 and a second port P2, the first channel 12 is located on the side wall 11 and penetrates through the side wall 11, the second channel 21 is located on the valve core 20 and has an opening on the surface of the valve core 20, the first channel 12 and the second channel 21 can be opened or closed by rotating the valve core 20, the first port P1 is located on the side wall 11 and communicates with the first channel 12, the second port P2 is located on the surface of the valve core 20 and communicates with the second channel 21, optionally, the first port P1 is located on the surface of the side wall 11 facing away from the receiving cavity 101, the second port P2 can be located on the axial end surface of the valve core 20 or on the circumferential surface of the valve core 20, and the fluid can enter or leave the control valve 1 from the first port P1 and the second port P2.

With further reference to fig. 1 to 7, the valve core 20 further has a flow port P3, the flow port P3 and the second port P2 are respectively disposed at two ends of the second channel 21, the sealing assembly 30 includes a communication channel 31, the communication channel 31 is communicated with the first port P1 through the first channel 12, the sealing assembly 30 can seal the first port P1, along a radial direction of the valve core 20, an orthographic projection of a wall portion of the flow port P3 at least partially overlaps with an orthographic projection of the communication channel 31, so that the valve core 20 can realize communication or closing of the flow port P3 and the communication channel 31 when rotating, and further realize communication or closing of the flow port P3 and the first port P1, the orthographic projection of the wall of the second port P2 is located outside the orthographic projection of the conducting channel 31, and at this time, the second port P2 does not need to be sealed by the sealing assembly 30, and compared with the case that all the ports of the control valve are arranged on the side wall of the valve body, and all the ports of the sealing assembly need to be sealed and a large number of conducting channels need to be arranged, the control valve provided by the embodiment of the invention can reduce the number of the ports sealed by the sealing assembly 30 and the number of the conducting channels 31 of the sealing assembly 30, so as to simplify the structure of the sealing assembly 30, and the sealing assembly 30 provided by the embodiment of the invention has better sealing performance.

It should be noted that, the valve core 20 may protrude from the exterior of the valve body 10 as shown in fig. 3, so that the second port P2 is located at the exterior of the valve body 10, in some embodiments, the valve core 20 may also be located inside the accommodating cavity 101 defined by the valve body 10, at this time, a communication port is provided on the valve body 10, and the communication port and the second port P2 are in a state of being always conducted, as long as an orthographic projection of a wall portion of the second port P2 is located outside an orthographic projection of the conducting channel 31, the second port P2 does not need to be sealed by the sealing component 30.

Further, the main structure of the valve core 20 is a cylindrical structure or a conical structure, and the wall of the accommodating cavity 101 is a cylindrical structure or a conical structure matching the shape of the valve core 20, at this time, a gap between the inner surface of the valve core 20 and the wall of the accommodating cavity 101 may be set to be small, so as to improve a deviation phenomenon generated when the valve core 20 is unbalanced in fluid pressure, and facilitate reducing or avoiding leakage of fluid in the control valve 1.

With reference to fig. 3 to 7, in some embodiments, the sealing assembly 30 includes at least two first sealing portions 32 and at least two second sealing portions 33, an orthogonal projection of the first sealing portion 32 is annular along an axial direction of the sealing assembly 30, the at least two first sealing portions 32 are spaced apart along the axial direction of the sealing assembly 30, the at least two second sealing portions 33 are arranged along a circumferential direction of the sealing assembly 30, the second sealing portion 33 is disposed between the two first sealing portions 32, the first sealing portions 32 are connected to the second sealing portions 33, and the first sealing portions 32 and the second sealing portions 33 are connected in a crossing manner to form the conducting channel 31. By arranging the first sealing portion 32 to be annular along the orthographic projection of the sealing assembly 30 in the axial direction, the valve core 20 can be pressed by the first sealing portion 32 in the circumferential direction, the coaxiality of the valve core 20 and the side wall portion 11 is improved, and by arranging the first sealing portion 32 and the second sealing portion 33 to form the conducting channel 31 in a crossed manner, the sealing assembly 30 can have better sealing performance. It should be noted that, in this specification, the height direction of the control valve 1, the axial direction of the seal assembly 30, and the axial direction of the valve element 20 are parallel or coincide with each other.

In specific implementation, as shown in fig. 4, 5 and 7, when the openings of the first passage 12 and the second passage 21 facing each other are disposed opposite to each other, the first passage 12 and the second passage 21 are in a communication state, and at this time, the first port P1 can communicate with the second port P2 through the first passage 12, the communication passage 31 of the seal assembly 30 and the second passage 21, so that fluid can flow through the control valve, it can be understood that when the openings of the first passage 12 and the second passage 21 facing each other are offset from each other by a predetermined angle, the first passage 12 and the second passage 21 can also communicate directly or communicate through a gap between the side wall portion 11 and the valve element 20. As shown in fig. 6, when the first passage 12 and the second passage 21 are blocked by the wall portion of the valve body 20, the opening of the second passage 21 toward the side wall portion 11 is located between the two second seal portions 33 in the circumferential direction of the valve body 20, the first passage 12 and the second passage 21 are in the closed state, and accordingly, the first port P1 and the second port P2 are in the closed state. Alternatively, the rotation angle of the valve element 20 may be 180 degrees or less than 180 degrees from the conduction state shown in fig. 5 to the closing state shown in fig. 6, which is not limited in the present invention as long as the conduction and/or the closing of the first port P1 and the second port P2 can be achieved.

Referring further to fig. 3 to 7, in some embodiments, the control valve 1 includes at least two first passages 12, the at least two first passages 12 are spaced apart along the axial direction of the sidewall 11, the sealing assembly 30 includes at least three first sealing portions 32 and at least four second sealing portions 33, and the at least one first passage 12 and the at least two second sealing portions 33 are located between the two first sealing portions 32 along the height direction of the control valve 1. With the above arrangement, the second seal portion 33 and the first seal portion 32 can intersect to form a communication passage, and the sealing performance of the control valve can be realized.

As shown in fig. 3 to 9, in the embodiment of the present invention, the control valve 1 includes two first passages 12, the two first passages 12 are arranged at intervals in the axial direction of the side wall portion 11, the seal assembly 30 includes three first seal portions 32 and four second seal portions 33, one first passage 12 and two second seal portions 33 are located between every two first seal portions 32 in the height direction of the control valve 1, and the two second seal portions 33 are partially provided on both sides of the seal assembly 30 in the radial direction. Through the arrangement, the sealing assembly 30 can be conveniently manufactured, so that the valve core 20 can be switched between the conduction mode and the closing mode by rotating 180 degrees, and the control on the valve core 20 is facilitated to be simplified.

As shown in fig. 3 and 4, the first port P1 located on one of the first passages 12 and the first port P1 located on the other first passage 12 may be distributed on both sides of the valve spool 20 in the radial direction, so that the two first ports P1 and the two corresponding second ports P2 can be simultaneously opened or closed; alternatively, the first port P1 located on one of the first passages 12 and the first port P1 located on the other first passage 12 may be distributed on the same side of the valve core 20 in the radial direction, so as to enable the one of the first ports P1 to be communicated with the corresponding second port P2, and the other of the first ports P1 to be closed with the corresponding second port P2, where the number of the first passages 12 may be set according to the requirement of a user, for example, the control valve 1 may also include three or more first passages 12, a part of the first passages 12 is arranged at intervals in the axial direction of the side wall portion 11, a part of the first passages 12 is arranged at intervals in the circumferential direction of the side wall portion, and the sealing assembly 30 may also include three first sealing portions 32 and four or more second sealing portions 33.

Based on this, as shown in fig. 9 to 11, in some embodiments, the number of the second passages 21 is the same as the number of the first passages 12, the second passages 21 include first sub-passages 211 and second sub-passages 212, the first sub-passages 211 and the second sub-passages 212 are separated by a wall portion of the spool 20, the first sub-passages 211 and the second sub-passages 212 are arranged at intervals in the axial direction of the spool 20, the first sub-passages 211 can communicate with the corresponding first passages 12, and the second sub-passages 212 can communicate with the corresponding first passages 12. The valve spool 20 includes a first end surface S1 and a second end surface S2 arranged in the axial direction of the valve spool 20, the second port P2 communicating with the first sub-passage 211 is located at the first end surface S1, and the second port P2 communicating with the second sub-passage 212 is located at the second end surface S2. Through the arrangement, the second ports P2 of a part of the number and the second ports P2 of another part of the number are respectively arranged on two axial end faces of the valve core 20, so that the position of the second channel 21 on the valve core 20 is conveniently and reasonably distributed, and the manufacturing process of the valve core 20 is facilitated to be simplified.

In order to facilitate stable installation of the sealing assembly 30, as shown in fig. 10 and 11, in some embodiments, at least one of the valve core 20 and the side wall portion 11 is provided with a groove 22, a shape of the groove 22 matches a shape of the sealing assembly 30, a portion of the sealing assembly 30 is limited in the groove 22, another portion of the sealing assembly 30 protrudes out of the groove 22, and the sealing assembly 30 is interposed between the valve core 20 and the side wall portion 11. Illustratively, the groove 22 is located in the valve core 20 to facilitate forming of the groove 22. Wherein, the shape of the groove 22 is matched with the shape of the sealing component 30 by: the recess 22 includes ring channel and bar groove, and the radial orthographic projection of edge case 20 of ring channel is the annular, and the bar groove extends along the axial of case 20, and ring channel and bar groove communicate each other, and the part of the first sealing 31 of seal assembly 30 is located the ring channel, and the part of second sealing 32 is located the bar inslot to make seal assembly 30 can stably install to case 20.

In some embodiments, the material of the sealing assembly 30 includes one or a combination of plastic, rubber, and graphite, and the sealing assembly 30 is connected with the valve core 20 as a single structure. Alternatively, the seal assembly 30 and the valve core 20 may be integrally formed or a casting process may be used to insert the seal assembly 30 to the valve core 20. The first sealing portion 31 may have a partial cross-section of a circle, a polygon, an ellipse, or a closed shape composed of straight lines and curved lines, which is cut along the axial direction of the sealing assembly 30.

In some embodiments, the valve core 20 includes a boss portion 23 and a main body portion 24, an orthogonal projection of the main body portion 24 is located inside an orthogonal projection of the boss portion 23 along an axial direction of the valve core 20, the boss portion 23 is in limit connection with one end surface of the side wall portion 11, the main body portion 24 includes a driving connection portion 241, and the driving connection portion 241 protrudes out of the other end surface of the side wall portion 11. In the embodiment of the present invention, the boss portion 23 is located at one end in the axial direction of the main body portion 24, and a partial number of the second ports P2 may be located at an end surface of the boss portion 23.

Based on this, as shown in fig. 1 to fig. 4, fig. 10 and fig. 11, in order to realize the rotation of the valve core 20, in some embodiments, the control valve 1 further includes a driving assembly 40, the driving assembly 40 includes a motor 41 and a transmission gear set 42, which are in transmission connection, the transmission gear set 42 is in transmission connection with the transmission connection portion 241, and the motor 41 and the valve core 20 are arranged at an interval along the radial direction of the valve core 20. Illustratively, the drive gear set 42 may include gears, or worm gears, worms, or the like. Since the second port P2 is located on the surface of the valve core 20, in this embodiment, the second port P2 is located on an axial end surface of the valve core 20, and the motor 41 and the valve core 20 are arranged at an interval along the radial direction of the valve core 20, so that the motor 41 and the second port P2 can be arranged at an interval, which is convenient for the control valve 1 to be installed and connected with other structures in the thermal management system. In order to enable the transmission gear set 42 to be stably connected with the transmission connecting portion 241 in a transmission manner, the transmission connecting portion 241 may include an arc surface and a plane, one of the gears of the transmission gear set 42 also includes a connecting plane and an arc connecting surface, the arc surface and the arc connecting surface are sleeved with each other, and the connecting plane is arranged opposite to the plane of the transmission connecting portion 241 to prevent the transmission connecting portion 241 and the transmission gear set 42 from moving in a serial manner, so that the transmission connecting portion 241 and the transmission gear set 42 rotate synchronously. The control valve 1 may further include a housing 60, and the housing 60 is connected to the valve body 10, for example, the housing 60 may be welded to the valve body 10 or connected by a fastener such as a thread, and the transmission gear set 42 may be located in a cavity formed by the housing 60, or the transmission gear set 42 and the driving assembly 40 may be located in a cavity formed by the housing 60, which is not limited by the invention.

In order to reduce the friction generated between the transmission gear set 42 and the valve body 10 during the rotation process, in some embodiments, the control valve 1 further includes a gasket 50, and the gasket 50 is sleeved outside the main body portion 24, and the gasket 50 is located between the transmission gear set 42 and the sidewall portion 11 along the height direction of the control valve 1.

In summary, the control valve 1 according to the embodiment of the present invention has the first port P1 and the second port P2, wherein the first port P1 is located on the sidewall 11 of the valve body 10 and is communicated with the first channel 12, the second port P2 is located on the valve body 20 and is communicated with the second channel 21, the conducting channel 31 of the sealing assembly 30 is communicated with the first port P1 through the first channel 12, and the second port P2 is spaced from the sealing assembly 30, when the sealing assembly 30 seals the first port P1, the sealing assembly 30 is not required to seal the second port P2, compared with the case that the whole number of ports of the control valve 1 are disposed on the side of the valve body 10, and the sealing assembly 30 is required to seal the whole number of ports to provide a larger number of conducting channels 31, the control valve 1 according to the embodiment of the present invention can reduce the number of ports sealed by the sealing assembly 30, and reduce the number of conducting channels 31 of the sealing assembly 30, so as to simplify the structure of the sealing assembly 30, and have better sealing performance, which is convenient for popularization and application.

It should be noted that: although the present invention has been described in detail with reference to the above embodiments, those skilled in the art will appreciate that various modifications, combinations, or equivalents may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A control valve having a housing chamber, a first passage and a second passage, the control valve comprising a valve body and a valve element, the valve body including a sidewall portion forming at least a partial wall portion of the housing chamber, the first passage being located at the sidewall portion, at least a portion of the valve element being located in the housing chamber, the second passage being located at the valve element, and rotating the valve element to open or close the first passage and the second passage;

the control valve further has a first port and a second port, the first port being located in the side wall portion and communicating with the first passage, the second port being located in the spool, the spool further having a communication port, the communication port and the second port being respectively provided at both ends of the second passage;

2. The control valve according to claim 1, wherein the sealing assembly comprises at least two first sealing portions and at least two second sealing portions, an orthographic projection of the first sealing portions is annular along an axial direction of the sealing assembly, the at least two first sealing portions are arranged at intervals along the axial direction of the sealing assembly, the at least two second sealing portions are arranged along a circumferential direction of the sealing assembly, the second sealing portion is arranged between the two first sealing portions, the first sealing portions are connected with the second sealing portions, and the first sealing portions and the second sealing portions intersect to form the communication passage.

3. The control valve of claim 2, including at least two of said first passages, at least two of said first passages being spaced axially of said sidewall portion;

the sealing assembly comprises at least three first sealing parts and at least four second sealing parts, and at least one first channel and at least two second sealing parts are positioned between the two first sealing parts along the height direction of the control valve.

4. The control valve of claim 2, including two of said first passages, said two first passages being spaced apart in an axial direction of said sidewall portion;

the sealing assembly comprises three first sealing parts and four second sealing parts, one first channel and two second sealing parts are located between every two first sealing parts along the height direction of the control valve, and the two second sealing parts are arranged on two radial sides of the sealing assembly.

5. The control valve according to claim 3 or 4, wherein the number of the second passages is the same as the number of the first passages, the second passages include first sub-passages and second sub-passages, and the first sub-passages and the second sub-passages are provided at intervals in an axial direction of the spool;

the valve core comprises a first end face and a second end face which are arranged along the axial direction of the valve core, the second port communicated with the first sub-channel is located on the first end face, and the second port communicated with the second sub-channel is located on the second end face.

6. The control valve according to any one of claims 1 to 5, wherein at least one of the valve element and the side wall portion is provided with a groove, the shape of the groove matches the shape of the sealing member, a part of the sealing member is retained in the groove, and the other part of the sealing member protrudes from the groove, and the sealing member is sandwiched between the valve element and the side wall portion.

7. The control valve of claim 6, wherein the groove is located in the valve core, the sealing component is made of one or a combination of plastic, rubber and graphite, and the sealing component and the valve core are connected into a whole structure.

8. The control valve according to any one of claims 1 to 5, wherein the spool includes a boss portion and a main body portion, an orthogonal projection of the main body portion is located inside an orthogonal projection of the boss portion in an axial direction of the spool, the boss portion is in limit connection with one end surface of the side wall portion, and the main body portion includes a transmission connection portion that protrudes from the other end surface of the side wall portion.

9. The control valve of claim 8, further comprising a drive assembly including a motor and a drive gear set in driving connection with the drive connection portion, wherein the motor is spaced from the valve spool in a radial direction of the valve spool.

10. The control valve according to claim 9, further comprising a spacer that is fitted around an outer portion of the main body portion, the spacer being located between the transmission gear set and the side wall portion in a height direction of the control valve.