CN112013134B

CN112013134B - Control valve

Info

Publication number: CN112013134B
Application number: CN201910460991.4A
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: 2019-05-30
Filing date: 2019-05-30
Publication date: 2023-09-19
Anticipated expiration: 2039-05-30
Also published as: CN112013134A

Abstract

The control valve comprises a valve core component and a valve body component, wherein the valve body component comprises a bottom wall part and a side wall part, the valve core component comprises a main body, and a part of the main body of the valve core component is accommodated in the first chamber; the valve core component comprises a first opening part and a second opening part, the first opening part faces the bottom wall part, the second opening part is positioned at the periphery of the main body, and the first opening part is communicated with the second opening part; the valve body part further comprises a first port part and a second port part, the first port part is connected with the inner wall corresponding to the second cavity, the second port part is connected with the inner wall corresponding to the first cavity, and the second opening part of the valve core part corresponds to the first side wall part; the valve core part further comprises an extension part, the extension part stretches into the second cavity, the extension part extends from the main body to the bottom wall part, and one end of the extension part is abutted against the bottom wall part. The flow resistance of the fluid can be relatively reduced, and the stability of the valve core component is also high.

Description

Control valve

Technical Field

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

Background

The control valve may be applied in a fluid medium line system, for example, for switching a communication flow path. Taking the application of the control valve in the automotive field as an example, the control valve may be used in an air conditioning system, an engine cooling system or a battery cooling system.

The control valve shown in fig. 9 includes a valve body 10 and a spool member 19 positioned in the valve body 10, and the switching port 13 and the inlet port 12 are shut off or communicated by rotation of the spool member 19, and the inlet port 12 is opposite to one end of a passage in the spool member 19, which has a large influence on the flow resistance of fluid flowing into the control valve and also increases the magnitude of friction force that the spool member 19 overcomes when rotating.

Disclosure of Invention

The technical scheme of the invention provides a control valve, which comprises a valve core component and a valve body component, wherein the valve body component comprises a bottom wall part and a side wall part, the side wall part comprises a first side wall part and a second side wall part, and the second side wall part is close to the bottom wall part relative to the first side wall part;

the first side wall part is internally provided with a first cavity, the second side wall part is internally provided with a second cavity, and the bottom wall part comprises an inner bottom wall corresponding to the second cavity;

the valve core component comprises a main body, and a part of the main body is accommodated in the first chamber; the valve core member includes a first opening portion facing the bottom wall portion and a second opening portion located at the outer periphery of the main body, the first opening portion and the second opening portion communicating;

the valve body part further comprises a first port part and a second port part, the first port part is connected with the inner wall corresponding to the second chamber, and the second port part is connected with the inner wall corresponding to the first chamber;

the spool member further includes an extension portion that protrudes into the second chamber, the extension portion extending from the main body to the bottom wall portion, and one end of the extension portion being abutted against the bottom wall portion.

In the control valve that this scheme provided, the partly holding of main part is in first cavity, and the case part includes first opening part, and first opening part is towards diapire portion, and the inner wall that first opening part corresponds with the second cavity is connected, and the case part still includes extension, and extension stretches into the second cavity, and extension extends to diapire portion from the main part to the one end and the diapire portion looks butt of extension can reduce fluidic flow resistance relatively, and the stability of case part is also higher moreover.

Drawings

FIG. 1 shows a schematic front view of an embodiment of the present invention;

FIG. 2 shows a schematic cross-sectional view of the control valve of FIG. 1 along line A-A;

FIG. 3 illustrates a schematic cross-sectional view of a valve body component of the control valve of FIG. 2;

FIG. 4 illustrates a schematic front view of a spool component of the control valve of FIG. 1;

FIG. 5 illustrates an enlarged partial schematic view of a spool component of the control valve of FIG. 2;

FIG. 6 shows a schematic cross-sectional view of the spool piece of FIG. 4 along line C-C;

FIG. 7 shows a schematic cross-sectional view of the control valve of FIG. 2 along line B-B;

FIG. 8 shows a schematic cross-sectional view of yet another embodiment of the invention;

fig. 9 is a schematic cross-sectional view of a conventional control valve.

Detailed Description

As shown in fig. 1 to 2, the control valve includes a drive member 6, a spool member 2, and a valve body member 3.

As shown in fig. 3, the valve body member 3 includes a bottom wall portion 37 and a side wall portion 38, the side wall portion 38 includes a first side wall portion 381 and a second side wall portion 382, and the second side wall portion 382 is adjacent to the bottom wall portion 37 with respect to the first side wall portion 381. The first side wall portion 381 has a first chamber 311 therein, the second side wall portion 382 has a second chamber 312 therein, and the bottom wall portion 37 includes an inner bottom wall corresponding to the second chamber 312.

As shown in fig. 2 and 3, the spool member 2 includes a main body 22, and a portion of the main body 22 is accommodated in the first chamber 311. The valve body member 2 includes a first opening portion 23, and the first opening portion 23 faces the bottom wall portion 37. The valve body member 3 further includes a first port portion 32 and a second port portion 33, the first port portion 32 being connected to an inner wall corresponding to the second chamber 312, and the second port portion 33 being connected to an inner wall corresponding to the first chamber 311.

As shown in fig. 2, the spool member 2 further includes an extension portion 26 that extends into the second chamber 312, the extension portion extending from the main body 22 to the bottom wall portion 37, and one end of the extension portion 26 abutting against the bottom wall portion 37.

As shown in fig. 3, the second side wall 382 forms an angle with the bottom wall 37, and after the fluid enters the second chamber 312 from the first port 32, the opening direction of the first opening 23 forms an angle with the opening direction of the first port 32, so that the impact of the fluid flowing in from the first port 32 to the main body 22 is reduced, the pressure of the valve body 3 or the sealing member 5 to the valve core member 2 is smaller, the friction force overcome when the valve core member rotates is smaller, and the stability of the operation of the valve core member 2 is improved.

As shown in fig. 3, the inner diameter of the first side wall portion 381 is larger than the inner diameter of the second side wall portion 382, and a first step portion 383 is formed between the inner wall of the first side wall portion 381 and the inner wall of the second side wall portion 382. The extension portion 26 and the main body 22 are integrally formed or the extension portion 26 and the main body 22 are fixed, the connection portion of the extension portion and the main body is located above the first step portion 383, and the first opening portion 23 is located above the first step portion 383. The term "upper" refers to a side relatively distant from the bottom wall 37. In this embodiment, the extension 26 may be formed separately from the body 22 and then secured to one another by welding to facilitate the manufacture of relatively complex shaped extensions.

In this embodiment, the cross-sectional area of the second side wall portion 312 is larger than that of the first end portion 32, so that the equivalent flow area in the second chamber 312 is larger, and the flow resistance of the fluid flowing in the second chamber 312, and thus the flow resistance of the fluid flowing in the valve body member 3, can be relatively reduced.

In the present embodiment, the cross section of the second side wall portion 382 is circular or substantially circular, the cross section of the first end portion 32 is circular or substantially circular, and the inner diameter of the second side wall portion 382 is larger than the inner diameter of the first end portion 32, i.e., the cross sectional area of the second side wall portion 382 is made larger than the cross sectional area of the first end portion 32. As shown in fig. 3, to accommodate the first open end 32, a height H between the first stepped portion 383 and the bottom wall portion is greater than or equal to the inner diameter of the first end portion 32. In the present embodiment, the second side wall portion 382 is perpendicular or substantially perpendicular to the bottom wall portion 37. In other second sidewall portion embodiments, the second sidewall portion 382 is not perpendicular to the bottom wall portion 37 such that the second chamber 312 may be generally trapezoidal in shape, where the minimum inner diameter of the second sidewall portion 312 is greater than the inner diameter of the first port portion 32.

Preferably, as shown in FIG. 3, the second side wall portion 382 has an inner diameter L, the first end portion 32 has an inner diameter D, and 1.5 D.ltoreq.L.ltoreq.2D, so that the size of the valve body member 3 is relatively small.

As shown in fig. 2 to 5, the valve body member 3 further includes a stopper portion 35 protruding from the bottom wall portion 37, and at least one of the extension portion 26 and the stopper portion 35 includes a recess portion 262 and a stopper wall portion 264 corresponding to a peripheral wall of the recess portion 262. At least a portion of the other of the extension 26 and the stop 35 extends into the recess 262 and is in rotational engagement with the stop wall 264.

The stopper 35 serves to radially limit the lower end of the spool member 2, that is, the end near the bottom wall, and also supports the spool member 2. The inner diameter of the limiting wall portion 264 is relatively small, the contact area between the spool part 2 and the bottom wall portion 37 is relatively small, and the friction force is relatively small, so that the rotation of the spool part 2 is facilitated. As shown in fig. 5, the extension portion 26 further includes a second step surface 265 at the bottom end of the recess 262, where the second step surface 265 may abut against the limiting portion 35 so as to axially limit the spool member 2.

The first port portion is located at the second side wall portion 312, not at the bottom wall portion 37, so that the stopper structure provided at the bottom wall portion 37 and the first port portion 32 do not interfere with each other, the blocking of the stopper structure to the fluid flowing in or out from the first port portion 32 is reduced, and the flow resistance of the fluid flowing in or out from the first port portion 32 to the second chamber 312 is relatively reduced. In addition, the complexity of the limiting structure is relatively reduced, so that the valve body part is simpler to manufacture, and the limiting part 35 and the valve body part 3 can be conveniently manufactured integrally, namely, the limiting part 35 and the valve body part 3 can be of an integral structure. When the valve body member 3 is made of plastic, the stopper 35 and the valve body member 3 may be integrally injection-molded.

In one embodiment of the present invention, as shown in fig. 4 and 5, the extension portion 26 further includes a connection portion 261 and a adapting portion 263, the recess portion 262 is located on the adapting portion 263, the limiting wall portion 264 protrudes from the adapting portion 263 in a direction towards the limiting portion 35, and the connection portion 261 connects the adapting portion 263 and the main body 22. The number of the connection parts 261 includes, but is not limited to, two, three or more, and the connection parts 261 may be symmetrically arranged along the circumferential direction of the adapting part 263, so that the adapting part 263 is uniformly stressed. Further, the connection portion 261 can be provided in a thin structure, and the contact area with the fluid flowing in the first port portion 32 can be relatively reduced, thereby reducing the flow resistance.

As shown in fig. 2, the valve housing 20 is provided in the valve body member 2, the first opening 23 is located at the extension 26, and the extension 26 is fixed to the main body 22 to form the valve housing 20. The first opening 23 communicates with the valve chamber 20.

As shown in fig. 2, the body 22 further includes a closed end 221, the spool member further includes a shaft 21, and the closed end 221 is connected to the shaft 21. In this embodiment, the closed end 221 and the shaft 21 are integrally formed, which can support other parts of the main body 22, and has high stability. The stopper 35 may be provided coaxially with the shaft 21.

As shown in fig. 4 and 6, the valve body member 2 further includes a second opening 24, the second opening 24 being located at the outer periphery of the main body, the first opening 23 and the second opening 24 communicating. The second opening 24 communicates with the valve chamber 20, and the valve chamber 20 communicates with the first opening 23 and the second opening 24.

As shown in fig. 6 and 7, the main body 22 further includes a third opening 27 and a fourth opening 28 provided at an outer peripheral portion thereof, the third opening 27 and the fourth opening 28 corresponding to the first side wall portion 381. The third opening 27 communicates with the valve chamber 20, and the fourth opening 28 also communicates with the valve chamber 20. The valve body member 3 further includes a third port portion 34 and a fourth port portion 36, the third port portion 34 being connected to an inner wall corresponding to the second chamber 312, and the fourth port portion 36 being connected to an inner wall corresponding to the second chamber 312. When the main body 22 is rotated to a certain angle, the second, third and fourth opening portions 24, 27 and 28 may selectively communicate with the second, third and fourth opening portions 33, 34 and 35. However, the first opening 23 communicates with the second chamber 312 regardless of the rotation of the main body 22. The number of openings provided in the outer peripheral portion of the main body may be increased or decreased as needed, for example, one, two, three, or more. The number of ports connected to the inner wall corresponding to the second chamber 312 may be increased or decreased as needed, for example, one, two or three or more. In other embodiments of the control valve, the number of ports connected to the inner wall corresponding to the first chamber 311 is not limited to one, and may be two or more.

As shown in fig. 7, the control valve further comprises a sealing assembly 5. The seal assembly 5 comprises a plurality of annular seal members, in this embodiment a first seal member 51, a second seal member 52, a third seal member 53 and a fourth seal member 54. The first, second, third and fourth sealing members 51, 52, 53 and 54 may have the same structure. The seal assembly 5 is accommodated in the first chamber 311, and at least a portion of the first, second, and third seal members 51, 52, and 53 has elasticity. The body 22 further includes an outer peripheral surface portion 29 located at an outer peripheral portion of the body, and the outer peripheral surface portion 29 may be spherical. The first seal member 51 is provided between the outer peripheral surface portion 29 and the first side wall portion 381, and the first seal member 51 surrounds the second port portion 33, the second seal member 52 is provided between the outer peripheral surface portion 29 and the first side wall portion 381, and surrounds the third port portion 34, and the third seal member 53 is provided between the outer peripheral surface portion 29 and the first side wall portion 381, and surrounds the fourth port portion 36. When one opening of the main body 22 faces or substantially faces one end of the valve body 3, a part of the sealing member surrounding the end is also provided around the opening and is sealed with the outer peripheral surface 29, and the other part of the sealing member is provided in a sealed manner with the first side wall 381 so that the end communicates with the opening. The number of sealing members may be greater than or equal to the number of port portions. The fourth sealing member 54 is disposed substantially at a position where the first sealing member 51 rotates 180 ° around the shaft 21, and the fourth sealing member 54 does not surround one of the end portions, but the pressure of the fourth sealing member 54 against the main body 22 may be balanced with the pressure of the first sealing member 51 against the main body 22.

As shown in fig. 8, in another embodiment of the present invention, the first opening 23 is located in the main body 22, the first opening 23 and the closed end 221 are provided at both ends of the main body 22 in the axial direction, and the closed end 221 is provided opposite to the bottom wall 37. The extension 26 is part of the body, and the extension 26 extends from the closed end 221 and through the valve chamber 20. Extension 26 may be coaxially disposed with shaft 21. The stop portion 35 includes a recess into which at least a portion of the extension 26 extends and is in clearance fit with the stop wall portion. In this embodiment, the extension 26 may have a rod shape. Because of the relatively simple structure of the extension 26, the fluid flowing from the first port portion 32 has a relatively small contact area with the extension 26, and the fluid flowing through the extension 26 has a relatively small resistance, so that the flow resistance of the fluid in the second chamber 312 is relatively small. In addition, the extension portion 26 may be integrally injection molded with the main body 22, that is, the extension portion 26 and the main body 22 may be integrally formed, so that the coaxiality of the extension portion 26, the shaft 21 and the main body 22 may be higher, and the higher coaxiality makes the distance between the main body 22 and the sealing assembly 5 circumferentially surrounding the main body in all directions more consistent, so that the pressures applied to the main body 22 in all directions are more balanced. The term "axial direction" refers to the direction in which the rotation center of the spool member 2 extends.

It should be noted that: the above embodiments are only for illustrating the present invention and not for limiting the technical solutions described in the present invention, for example, the directions of "front", "rear", "left", "right", "up", "down", etc., and although the present invention has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that the present invention may be combined, modified or substituted with each other, and all the technical solutions and modifications thereof without departing from the spirit and scope of the present invention are intended to be included in the scope of the claims of the present invention.

Claims

1. A control valve comprising a spool part (2) and a valve body part (3), characterized in that the valve body part (3) comprises a bottom wall part (37) and a side wall part (38), the side wall part (38) comprises a first side wall part (381) and a second side wall part (382), the second side wall part (382) is close to the bottom wall part (37) relative to the first side wall part (381);

the first side wall part (381) is internally provided with a first chamber (311), the second side wall part (382) is internally provided with a second chamber (312), and the bottom wall part (37) comprises an inner bottom wall corresponding to the second chamber (312);

the valve core component (2) comprises a main body (22), and a part of the main body (22) is accommodated in the first chamber (311); the valve body member (2) includes a first opening portion (23) and a second opening portion (24), the first opening portion (23) facing the bottom wall portion (37), the second opening portion (24) being located at the outer periphery of the main body, the first opening portion (23) and the second opening portion (24) communicating;

the valve body part (3) further comprises a first port part (32) and a second port part (33), wherein the first port part (32) is connected with the second side wall part (382) corresponding to the second chamber (312), the second port part (33) is connected with the inner wall corresponding to the first chamber (311), and the first port part (32) is communicated with the first opening part (23) through the second chamber (312);

the spool part (2) further includes an extension portion (26), the extension portion (26) protrudes into the second chamber (312), the extension portion extends from the main body (22) to the bottom wall portion (37), and one end of the extension portion abuts against the bottom wall portion (37).

2. The control valve according to claim 1, wherein an inner diameter of the first side wall portion (381) is larger than an inner diameter of the second side wall portion (382), and a first step portion (383) is formed between an inner wall of the first side wall portion (381) and an inner wall of the second side wall portion (382);

the extension part (26) and the main body (22) are of an integral structure or the extension part (26) and the main body (22) are fixed, the connection part of the extension part and the main body is positioned above the first step part (383), and the first opening part is positioned above the first step part (383).

3. The control valve according to claim 2, wherein the second side wall portion (382) is circular or substantially circular in cross-section, the first port portion (32) is circular or substantially circular in cross-section, and the second side wall portion (382) has an inner diameter greater than the inner diameter of the first port portion (32);

a height H between the first step part (383) and the bottom wall part is greater than or equal to an inner diameter of the first port part (32).

4. The control valve of claim 3, wherein the second sidewall portion has an inner diameter L and the first sidewall portion has an inner diameter D,1.5D ∈l ∈2d;

the first port portion (32) is perpendicular or substantially perpendicular to the bottom wall portion (37).

5. The control valve of any of claims 1-4,

a valve chamber (20) is arranged in the valve core component (2), the first opening part (23) is communicated with the valve chamber (20), the second opening part (24) is also communicated with the valve chamber (20), the valve chamber is communicated with the first opening part and the second opening part, the first opening part is positioned at the extension part, and the extension part and the main body are fixed to form the valve chamber (20);

alternatively, the valve body member (2) has a valve chamber (20) therein, the first opening (23) communicates with the valve chamber (20), the second opening (24) also communicates with the valve chamber (20), the valve chamber communicates with the first opening and the second opening, the main body includes a closed end (221), the first opening is located in the main body, the first opening (23) and the closed end (221) are respectively provided at both ends in an axial direction of the main body (22), the closed end (221) is provided opposite to the bottom wall, the extension is a part of the main body, and the extension extends from the closed end and passes through the valve chamber.

6. The control valve according to claim 5, wherein the valve body member (3) further includes a stopper portion (35) protruding from the bottom wall portion (37), at least one of the extension portion (26) and the stopper portion (35) including a recess portion (262) and a stopper wall portion (264) corresponding to a peripheral wall of the recess portion (262); at least a portion of the other of the extension (26) and the stop (35) extends into the recess (262) and is in rotational engagement with the stop wall (264).

7. The control valve according to claim 6, wherein the extension portion (26) further includes a connection portion (261) and an adapter portion (263), the recess portion (262) is located at the adapter portion (263), and the limiting wall portion (264) protrudes from the adapter portion (263) in a direction toward the limiting portion (35).

8. The control valve according to claim 1, characterized in that it further comprises a sealing assembly (5) housed in the first chamber, the spool member (2) comprising a peripheral face portion (29) located at a peripheral portion of the main body (22);

the seal assembly (5) includes at least two seal members that are disposed between the outer peripheral surface portion and the first side wall portion (381) and at least one of which surrounds the second port portion (33).

9. The control valve according to claim 5, wherein the main body (22) further includes a third opening portion (27) and a fourth opening portion (28) provided to an outer peripheral portion of the main body, the third opening portion (27) and the fourth opening portion (28) corresponding to the first side wall portion (381);

the third opening (27) communicates with the valve chamber (20), and the fourth opening (28) also communicates with the valve chamber (20);

the valve body part (3) further comprises a third port part (34) and a fourth port part (36), wherein the third port part (34) is connected with the inner wall corresponding to the second chamber (312), and the fourth port part (36) is connected with the inner wall corresponding to the second chamber (312).

10. A control valve according to claim 5, wherein the valve body member (3) further comprises a stopper portion (35) protruding from the bottom wall portion (37), the valve core member further comprises a shaft (21), the closed end portion (221) is connected to the shaft (21), the closed end portion (221) is integrally formed with the shaft (21), and the stopper portion (35) is coaxially provided with the shaft (21);

the control valve further comprises a driving part (6), and the driving part (6) is in transmission connection with the shaft (21).