CN217713685U

CN217713685U - Expansion valve

Info

Publication number: CN217713685U
Application number: CN202221047653.1U
Authority: CN
Inventors: 不公告发明人
Original assignee: Zhejiang Sanhua Automotive Components Co Ltd
Current assignee: Zhejiang Sanhua Automotive Components Co Ltd
Priority date: 2022-04-28
Filing date: 2022-04-28
Publication date: 2022-11-01
Anticipated expiration: 2032-04-28

Abstract

The application discloses an expansion valve, including the valve body, the valve body has valve chamber and valve port, the wall that forms the valve chamber includes upper wall portion and first lateral wall portion, upper wall portion includes first wall portion and second wall portion, the valve port takes shape in first wall portion, the valve body has first runner, second runner, first runner communicates with valve chamber, the second runner communicates with valve chamber through the valve port, along the axial direction of expansion valve, second wall portion is closer to the valve port than first runner, the second wall portion has first connecting wall, first connecting wall links to each other with first lateral wall portion, first connecting wall includes the curved surface. The expansion valve reduces the vortex generated when the fluid flows into the valve port from the first flow passage, and can reduce the noise.

Description

Expansion valve

Technical Field

The application relates to the technical field of air conditioners, in particular to an expansion valve.

Background

An expansion valve typically has a chamber and a valve port, and the throttling effect is achieved by adjusting the flow area of the valve port. Fluid flows into the chamber through the inlet and then flows out through the valve port, the valve port is usually positioned on the top wall of the chamber, the joint of the side wall of the chamber and the top wall is usually provided with a right angle, and the fluid is easy to swirl at the right angle position when flowing through the right angle position, so that noise is generated.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve above technical problem, the utility model provides a can reduce the fluid swirl, have the expansion valve of the function of making an uproar of falling.

An embodiment of the present application provides an expansion valve, including a valve body, the valve body having a valve chamber and a valve port, a wall forming the valve chamber including an upper wall portion and a first side wall portion, the upper wall portion including a first wall portion and a second wall portion, the valve port being formed in the first wall portion, the valve body having a first flow passage and a second flow passage, the first flow passage being communicated with the valve chamber, the second flow passage being communicated with the valve chamber through the valve port, the second wall portion being closer to the valve port than the first flow passage along an axial direction of the expansion valve, the second wall portion having a first connecting wall, the first connecting wall being connected with the first side wall portion, the first connecting wall including a curved surface.

Among the above-mentioned technical scheme, through set up first connecting wall at the second wall portion, first connecting wall includes the curved surface, carries out the water conservancy diversion through the curved surface to the fluid, reduces the vortex that produces when fluid flows into the valve port, has the function of making an uproar.

Drawings

Fig. 1 is a schematic structural diagram of an expansion valve according to an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of the expansion valve of FIG. 1 taken in the direction H-H;

FIG. 3 is an enlarged view of a portion A of FIG. 2;

FIG. 4 is a schematic cross-sectional view of a portion of another embodiment of the present invention;

FIG. 5 is a schematic cross-sectional view of a portion of another embodiment of the present invention;

fig. 6 is a schematic sectional view of a part of a structure according to yet another embodiment of the present invention.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work all belong to the protection scope of the present invention.

The utility model discloses an embodiment, refer to fig. 1-3, expansion valve 100 includes valve body 10, unit head assembly 20, case subassembly 30, transfer line 40 and regulation seat subassembly 50, as shown in fig. 2, expansion valve 100's axial direction is direction E, along expansion valve 100's axial direction, unit head assembly 20 is located the top of valve body 10, unit head assembly 20 and valve body 10 sealing connection, adopt thread sealing's connected mode in the picture, of course, also can adopt other connected modes, adjust seat subassembly 50 and be located the bottom of valve body 10, adjust seat subassembly 50 and valve body 10 sealing connection, adopt thread sealing's connected mode in the picture, of course, also can adopt other connected modes. The valve body 10 has a valve chamber 11, the cartridge assembly 30 is at least partially disposed in the valve chamber 11, and the cartridge assembly 30 is connected to the adjustment seat assembly 50, wherein the connection is a limit connection, but other connection methods can be used. The valve body 10 has a valve port 12 and a valve channel 17, at least a portion of the transmission rod 40 is located in the valve channel 17 of the valve body 10, the valve chamber 11 is communicated with the valve channel 17 through the valve port 12, the transmission rod 40 connects the power head assembly 20 with the spool assembly 30, the power head assembly 20 drives the transmission rod 40 to move, and the transmission rod 40 drives the spool assembly 30 to move so as to adjust the flow area of the valve port 12.

The valve body 10 includes a first flow channel 13, a second flow channel 14, a third flow channel 15, and a fourth flow channel 16, the first flow channel 13 is communicated with the valve chamber 11, the second flow channel 14 is communicated with the valve channel 17, the fluid flows in from the first flow channel 13, flows out from the second flow channel 14 after passing through the spool assembly 30 and being throttled by the valve port 12, and flows through other components, such as a heat exchanger, for heat exchange, then flows in from the third flow channel 15, and finally flows out from the fourth flow channel 16. As shown in fig. 1 and 2, the third flow passage 15 is communicated with the fourth flow passage 16, and the second flow passage 14 and the third flow passage 15 are located on the same side of the valve body 10, so that the expansion valve 100 can be conveniently integrated with other components of the heat exchanger. Of course, the number of flow passages may be changed here depending on the situation, for example, the valve body 10 includes only the first flow passage 13 and the second flow passage 14.

In some embodiments, as shown in fig. 1 to 3, the wall forming the valve chamber 11 includes an upper wall portion 112 and a first side wall portion 111, the first side wall portion 111 is generally cylindrical, the upper wall portion 112 includes a first wall portion 1121 and a second wall portion 1122, as shown in fig. 3, the first wall portion 1121 is located above the second wall portion 1122, the valve port 12 is formed at the top of the first wall portion 1121, the first side wall portion 111 has a first port 1111, the first flow passage 13 communicates with the valve chamber 11 through the first port 1111, the second wall portion 1122 is closer to the valve port 12 than the first flow passage 13 in the axial direction of the expansion valve 100, the second wall portion 1122 has a first connecting wall 1123, the first connecting wall 1123 includes a curved surface 1124, the first connecting wall 1123 is connected to the first side wall portion 111, and the fluid is guided by the curved surface 1124, so that the fluid can be smoothly transferred, the vortex generated when the fluid flows into the valve port 12 is reduced, and a noise reduction function is provided, as shown in fig. 3, the curved surface protrudes outward, and the curved surface 1134 protrudes toward the inside of the valve chamber 11 without interfering with the spool assembly 30. The longitudinal section of the first channel 13 and the second channel 14 is defined as a first surface, the surface indicated by H-H shown in fig. 1 is a first surface, as shown in fig. 2 and 3, the curved surface 1124 is an arc-shaped structure along the cross section of the first surface, and the fluid is guided by the curved surface 1124 having an arc-shaped structure in the longitudinal section, so that the fluid can be smoothly transited, the vortex generated when the fluid flows into the valve port 12 is reduced, the noise reduction function is achieved, and the curved surface 1124 replaces the traditional right-angle structure, so that the phenomenon that the knife edge part is sharp and thin when the right-angle processing is performed can be avoided, and the knife edge is easily broken when the knife is fed.

In some embodiments, the curved surface 1134 has a circular arc structure in a longitudinal section along the first surface, the radius of the circular arc is defined as R1, R1 ≧ 0.1mm, and the minimum distance between the first sidewall 111 and the first wall 1121 in the radial direction of the valve chamber is defined as d1, where R1 ≦ d1, as shown in fig. 3, R1= d1, that is, the second wall 1122 is an arc structure as a whole. As shown in fig. 4, the first connection wall 1123 may be located only between the first port 1111 and the valve port 12, i.e., the second wall portion 1122 on the side away from the first port 1111 does not have the first connection wall 1123. As shown in fig. 5, the second wall portion 1122 may be provided with a first connecting wall 1123 at a position close to the first side wall portion 111, and may have a planar structure at a position close to the valve port 12.

As shown in fig. 6, the curved surface 1124 of the first connecting wall 1123 along the first plane may have a straight structure, that is, the curved surface 1124 of the first connecting wall 1123 may have a structure similar to a side surface of a circular truncated cone, and the curved surface 1124 having a straight longitudinal section guides the fluid, so that the fluid can be smoothly transited, the vortex generated when the fluid flows into the valve port 12 is reduced, and the noise reduction function is provided. As shown in fig. 6, an angle between the first wall portion 1121 and the axial direction of the expansion valve 100 is defined as a, and an angle between the first connecting wall 1123 and the axial direction of the expansion valve is defined as b, where a < b to avoid affecting the throttling of the valve port, but the angle between the first wall portion 1121 and the axial direction of the expansion valve 100 may be equal to the angle between the first connecting wall 1123 and the axial direction of the expansion valve, that is, a = b, and in this case, the first wall portion 1121 and the second wall portion 1122 of the upper wall portion 112 are one wall portion with smooth transition.

As shown in fig. 3, the walls forming the first flow channel 13 include a second sidewall 131, the second sidewall 131 includes a first-stage sidewall 1311 and a second-stage sidewall 1312, the first-stage sidewall 1311 has a diameter larger than that of the second-stage sidewall 1312, a second connecting wall 1313 is provided between the first-stage sidewall 1311 and the second-stage sidewall 1312, and a cross section of the second connecting wall 1313 along the first plane has an arc structure or a straight structure. As shown in fig. 3, the cross section of the second connecting wall 1313 along the first surface is a circular arc structure, and the minimum distance between the first-stage side wall 1311 and the second-stage side wall 1312 along the radial direction of the first flow channel 13 is greater than or equal to the circular arc radius of the second connecting wall 1313, so that the size of the second side wall 131 is not damaged due to too large chamfer, the second side wall 131 does not generate abrupt change of fluid, and the generation of vortex is reduced. The walls forming the second flow channel 14 include a third sidewall part 141, the third sidewall part 141 includes a third-stage sidewall 1411 and a fourth-stage sidewall 1412, the diameter of the third-stage sidewall 1411 is greater than that of the fourth-stage sidewall 1412, a third connecting wall 1413 is provided between the third-stage sidewall 1411 and the fourth-stage sidewall 1412, the cross section of the third connecting wall 1413 along the first surface is a circular arc structure, and the minimum distance between the third-stage sidewall 1411 and the fourth-stage sidewall 1412 along the radial direction of the first flow channel is greater than or equal to the circular arc radius of the third connecting wall 1413. Of course, the third connecting wall 1413 may have other curved or straight configurations.

The above is to the present invention provides an expansion valve which is described in detail. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the core concepts of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.

Claims

1. An expansion valve (100) comprising a valve body (10), the valve body (10) having a valve chamber (11) and a valve port (12), a wall forming the valve chamber (11) comprising a first side wall portion (111) and an upper wall portion (112), the upper wall portion (112) comprising a first wall portion (1121) and a second wall portion (1122), the valve port (12) being formed in the first wall portion (1121), the valve body (10) having a first flow passage (13), a second flow passage (14), the first flow passage (13) communicating with the valve chamber (11), the second flow passage (14) communicating with the valve chamber (11) through the valve port (12), the second wall portion (1122) being closer to the valve port (12) than the first flow passage (13) in an axial direction of the expansion valve (100), the second wall portion (1122) having a first connecting wall portion (1123), the first connecting wall portion (1123) being connected to the first side wall portion (111), the first connecting wall portion (1123) comprising a curved surface (1124).

2. An expansion valve (100) according to claim 1, wherein the first side wall portion (111) has a first port (1111), through which the first flow passage (13) communicates with the valve chamber (11), the first connecting wall (1123) being located at least between the first port (1111) and the valve port (12).

3. An expansion valve (100) according to claim 1 or 2, wherein the longitudinal cross-section defining the first flow passage (13) and the second flow passage (14) is a first plane, and the cross-sectional shape of the curved surface (1124) along the first plane is an arc-shaped configuration.

4. An expansion valve (100) according to claim 1 or 2, wherein the longitudinal cross-section defining the first flow passage (13) and the second flow passage (14) is a first plane, and the curved surface (1124) has a straight configuration along the cross-sectional shape of the first plane.

5. An expansion valve (100) according to claim 4, wherein an angle between the first wall portion (1121) and an axial direction of the expansion valve (100) is defined as a, and an angle between the first connecting wall (1123) and an axial direction of the expansion valve (100) is defined as b, wherein a ≦ b.

6. An expansion valve according to claim 3, wherein the curved surface (1124) has a circular arc configuration in longitudinal section along the first surface, the radius of the circular arc being defined as R1, R1 ≧ 0.1mm, at least a part of the first sidewall portion (111) is cylindrical, and the minimum distance between the first sidewall portion (111) and the first wall portion (1121) in the radial direction of the valve chamber (11) is defined as d1, where R1 ≦ d1.

7. An expansion valve (100) according to claim 3, wherein the wall forming the first flow channel (13) comprises a second sidewall part (131), the second sidewall part (131) comprises a first section sidewall (1311) and a second section sidewall (1312), the first section sidewall (1311) has a larger diameter than the second section sidewall (1312), a second connecting wall (1313) is provided between the first section sidewall (1311) and the second section sidewall (1312), and the second connecting wall (1313) has a circular arc structure in cross-section along the first face.

8. An expansion valve (100) according to claim 3, wherein the walls forming the second flow channel (14) comprise a third sidewall portion (141), wherein the third sidewall portion (141) comprises a third sidewall portion (1411) and a fourth sidewall portion (1412), wherein the third sidewall portion (1411) has a larger diameter than the fourth sidewall portion (1412), wherein a third connecting wall (1413) is arranged between the third sidewall portion (1411) and the fourth sidewall portion (1412), and wherein the cross section of the third connecting wall (1413) along the first face is a circular arc structure.

9. An expansion valve (100) according to claim 1 or 2, wherein the expansion valve (100) further comprises a power head assembly (20), a transmission rod (40) and a valve core assembly (30), the valve core assembly (30) is at least partially located in the valve chamber (11), the transmission rod (40) connects the power head assembly (20) and the valve core assembly (30), and the transmission rod (40) drives the valve core assembly (30) to move so as to adjust the flow area of the fluid passing through the valve port (12).

10. An expansion valve (100) according to claim 1 or 2, wherein the valve body (10) further comprises a third flow channel (15) and a fourth flow channel (16), the third flow channel (15) communicating with the fourth flow channel (16), the second flow channel (14) being located on the same side of the valve body (10) as the third flow channel (15).