CN215059699U

CN215059699U - Valve seat of reversing valve and reversing valve with same

Info

Publication number: CN215059699U
Application number: CN202120148375.8U
Authority: CN
Inventors: 张克鹏
Original assignee: Zhejiang Dunan Artificial Environment Co Ltd
Current assignee: Zhejiang Dunan Artificial Environment Co Ltd
Priority date: 2021-01-20
Filing date: 2021-01-20
Publication date: 2021-12-07
Anticipated expiration: 2031-01-20

Abstract

The utility model relates to the technical field of valves, especially, relate to a disk seat of switching-over valve and have its switching-over valve. The utility model provides a pair of disk seat of switching-over valve, including the pedestal, along the thickness direction of pedestal, set up a plurality of opening holes that run through the setting on the pedestal, every opening hole is equipped with the arc surface to the evagination on the same side of pedestal. The utility model also provides a switching-over valve, its disk seat that includes valve body, slider and above-mentioned switching-over valve. Compared with the prior art, the utility model has the advantages of: the circular arc surface is arranged at the through hole, so that turbulent vortex of fluid is avoided when the fluid flows through the through hole, pressure drop loss is reduced, and efficiency is improved.

Description

Valve seat of reversing valve and reversing valve with same

Technical Field

The utility model relates to the technical field of valves, especially, relate to a disk seat and have its switching-over valve.

Background

The reversing valve is an important part of the heat pump type air conditioner and comprises a solenoid coil, a pilot valve and a main valve. The reversing of the main valve is realized through the combined action of the electromagnetic coil and the pilot valve so as to switch the flowing direction of the refrigerant, thereby switching the air conditioner between the two working states of refrigeration and heating.

The circulation hole department of current switching-over valve disk seat is equipped with the chamfer, and the velocity of flow can increase when the fluid flow is through chamfer to the local flow resistance that leads to here also grow, the torrent vortex easily takes place, thereby increase pressure drop loss, reduces the circulation efficiency.

SUMMERY OF THE UTILITY MODEL

In view of this, to the above technical problem, the utility model provides a valve seat of switching-over valve that fluid flow resistance is little, circulation efficiency is high.

In order to solve the technical problem, the utility model provides a following technical scheme:

the valve seat comprises a seat body, wherein a plurality of flow holes which penetrate through the seat body are formed in the seat body in the thickness direction of the seat body, and each flow hole is formed in the same side face of the seat body and is provided with an arc surface which protrudes outwards.

It can be understood that the circular arc surface is arranged at the circulating hole, so that turbulent vortex of fluid flowing through the circulating hole is avoided, pressure drop loss is reduced, and efficiency is improved.

In one embodiment, the arc surface and the side surface corresponding to the seat body are in smooth transition.

It will be appreciated that a large turning of the fluid at the transition section, causing turbulent eddies, is avoided.

In one embodiment, the circular arc surfaces on two adjacent flow holes can form a U-shaped channel.

It will be appreciated that the fluid is caused to turn slowly before turning rapidly as it passes through the U-shaped passage, thereby avoiding turbulent eddies in the fluid as it passes through the flow openings.

In one embodiment, one side of the seat body, which is far away from the arc surface, is set to be an arc surface attached to the inner wall of the valve body.

It can be understood that the arc-shaped surface is arranged to facilitate the matching and fixing between the seat body and the valve body.

In one embodiment, the valve seat comprises a valve body, a sliding block and a reversing valve, wherein the valve body is internally provided with a valve cavity, the valve seat is fixedly arranged in the valve cavity, and the sliding block is arranged in the valve cavity and can slide on the valve seat.

In one embodiment, the valve body is further provided with a plurality of mounting holes, the reversing valve further comprises a plurality of connecting pipes, the connecting pipes are correspondingly mounted in the mounting holes one by one, and one ends of the connecting pipes, which are far away from the arc surface, on the seat body are connected with the seat body through the circulation holes.

It will be appreciated that fluid enters the valve chamber or exits the valve chamber through the nipple.

In one embodiment, the slider is internally provided with a communication cavity which can be arbitrarily communicated with two adjacent circulation holes.

It can be understood that the reversing valve can be reversed by sliding the sliding block on the seat body, and when the sliding block slides on the seat body, the communicating cavity can be arbitrarily communicated with two adjacent circulating holes, so that the reversing purpose is achieved.

In one embodiment, the sliding block is connected to a sliding assembly, and the sliding assembly can drive the sliding block to slide on the valve seat.

The valve seat is provided with a valve cavity, a valve seat is arranged in the valve cavity, and the valve cavity is provided with a valve seat.

In one embodiment, the sliding assembly comprises a piston and a guide frame, the sliding block is connected to the guide frame, and the piston is connected to two ends of the guide frame.

In one embodiment, the two ends of the valve body are covered with end covers, and the end covers are connected with the valve body in a sealing mode.

It will be appreciated that not only is leakage of fluid avoided, but also dust and water resistance is achieved.

Compared with the prior art, the utility model provides a disk seat of switching-over valve, through opening department sets up the arc surface to avoid the fluid to flow through take place the torrent vortex during the opening, reduced the pressure drop loss, promoted efficiency.

Drawings

Fig. 1 is a schematic structural diagram of a valve seat of a reversing valve provided by the present invention;

fig. 2 is a schematic structural diagram of the reversing valve provided by the present invention.

The symbols in the drawings represent the following meanings:

100. a valve seat; 10. a base body; 11. a flow-through hole; 111. a circular arc surface; 12. a U-shaped channel; 13. an arc-shaped surface; 101. a diverter valve; 20. a valve body; 21. a valve cavity; 22. mounting holes; 221. a first mounting hole; 222. A second mounting hole; 223. a third mounting hole; 224. a fourth mounting hole; 23. taking over a pipe; 231. a first adapter tube; 232. a second adapter tube; 233. a third connection pipe; 234. a fourth connection pipe; 30. a slider; 31. a communicating cavity; 40. a sliding assembly; 41. a piston; 411. a first stopper; 412. a second stopper; 42. a guide frame; 50. and (4) end covers.

Detailed Description

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

It will be understood that when an element is referred to as being "mounted on" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. When an element is referred to as being "secured to" another element, it can be directly secured to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 to 2, the present invention provides a valve seat 100 of a reversing valve, in which the valve seat 100 of the reversing valve is applied to a reversing valve 101, and the reversing valve 101 is applied to a refrigeration system for switching between different pipelines. In this embodiment, the reversing valve 101 is a four-way reversing valve 101, and in other embodiments, the reversing valve 101 may also be a five-way reversing valve 101, a six-way reversing valve 101, or other types of reversing valves 101.

Specifically, the valve seat 100 of the reversing valve includes a seat body 10, and a plurality of flow holes 11 penetrating through the seat body 10 are formed in the seat body 10 along a thickness direction of the seat body 10, and each flow hole 11 is provided with an arc surface 111 protruding outward on the same side surface of the seat body 10.

It should be noted that, the flow hole 11 of the conventional reversing valve seat 100 is provided with a chamfer, and when fluid flows through the chamfer, the flow velocity increases, so that the local flow resistance at the position also increases, and turbulent vortex is likely to occur, so that the pressure drop loss is increased, and the flow efficiency is reduced. In the embodiment, the arc surface 111 is arranged at the flow through hole 11, so that turbulent vortex of fluid when flowing through the flow through hole 11 is avoided, pressure drop loss is reduced, and efficiency is improved.

As shown in fig. 1, the convex arc surface 111 disposed at the flow hole 11 smoothly transitions with the corresponding side surface of the seat body 10, so as to avoid turbulence vortex caused by large turning of the fluid at the transition section.

It should be noted that, because in the prior art, the flow holes 11 of the seat body 10 are provided with chamfers, when fluid enters from one flow hole 11 and turns to flow out from another adjacent flow hole 11, the corners of the passage through which the fluid flows are right angles, and when the fluid flows through the right angles, the fluid is high in flow speed and turns fast, turbulent vortex is easily generated, and the fluid flow is also blocked; therefore, in the present embodiment, by providing the convex arc surface 111 at the through flow hole 11, the arc surfaces 111 on two adjacent through flow holes 11 can form the U-shaped channel 12, and when the fluid flows through the U-shaped channel 12, the fluid turns first at a slow speed and then at a fast speed, so that turbulent vortex of the fluid when the fluid flows through the through flow hole 11 is avoided.

Further, one side of the seat body 10 away from the arc surface 111 is set to be an arc surface 13 attached to the inner wall of the valve body 20, and the setting of the arc surface 13 is convenient for the seat body 10 to be matched and fixed with the valve body 20.

The utility model also provides a switching-over valve 101, including the disk seat 100 of valve body 20, slider 30 and switching-over valve, valve pocket 21 has in the valve body 20, and disk seat 100 is fixed to be set up in valve pocket 21, and slider 30 is located in valve pocket 21 to can slide on disk seat 100.

The directional valve 101 also has the advantages of the valve seat 100 of the directional valve 101 described above.

As shown in fig. 2, the valve body 20 is further provided with a plurality of mounting holes 22, the reversing valve 101 further includes a plurality of connecting pipes 23, the plurality of connecting pipes 23 are correspondingly mounted in the mounting holes 22, and one ends of the connecting pipes 23 far away from the arc surface 111 on the seat body 10 are connected with the seat body 10 through the flow holes 11.

Specifically, in the four-way reversing valve 101 of the present embodiment, the number of the mounting holes 22 is 4, which are the first mounting hole 221, the second mounting hole 222, the third mounting hole 223, and the fourth mounting hole 224, correspondingly, the number of the connection pipes 23 is also 4, which are the first connection pipe 231, the second connection pipe 232, the third connection pipe 233, and the fourth connection pipe 234, respectively, the first mounting hole 221 is connected with the first connection pipe 231, the second mounting hole 222 is connected with the second connection pipe 232, the third mounting hole 223 is connected with the third connection pipe 233, and the fourth mounting hole 224 is connected with the fourth connection pipe 234.

Specifically, the second connection pipe 232 is connected to an evaporator (not shown) in the refrigeration system, that is, the second installation hole 222 is an "E" port, the third connection pipe 233 is connected to a suction port of the compressor, the third installation hole 223 is an "S" port, and the fourth connection pipe 234 is connected to a condenser (not shown), that is, the fourth installation hole 224 is a "C" port. In other embodiments, the valve body 20 may further have a fifth mounting hole 22, the fifth mounting hole 22 is connected to a fifth connection pipe 23, the fifth connection pipe 23 is connected to another heat exchanger, the first connection pipe 231 or another position according to different uses of the reversing valve 101, and the valve body 20 may further have another connection port.

Further, the inside of the slider 30 is provided with a communicating cavity 31, the communicating cavity 31 can be arbitrarily communicated with the two adjacent circulation holes 11, the purpose of reversing the reversing valve 101 can be realized by the sliding of the slider 30 on the seat body 10, and when the slider 30 slides on the seat body 10, the communicating cavity 31 can be arbitrarily communicated with the two adjacent circulation holes 11, so that the purpose of reversing is realized.

The communication chamber 31 can be communicated with the second connection pipe 232 and the third connection pipe 233, or the communication chamber 31 can be communicated with the third connection pipe 233 and the fourth connection pipe 234, and the valve chamber 21 and the communication chamber 31 are always isolated and not communicated.

Further, the sliding block 30 is connected to the sliding assembly 40, the sliding assembly 40 can drive the sliding block 30 to slide on the valve seat 100, and the sliding block 30 is driven to slide on the valve seat 100 by the movement of the sliding assembly 40 in the valve cavity 21, so as to achieve the purpose of reversing the direction of the reversing valve 101.

Specifically, the sliding assembly 40 comprises a piston 41 and a guide frame 42, the sliding block 30 is connected to the guide frame 42, and the two ends of the guide frame 42 are connected with the piston 41; the piston 41 can drive the sliding block 30 to move in the valve cavity 21 through the guide frame 42, and the communication cavity 31 is communicated with two different adjacent connecting pipes 23 through the movement of the sliding block 30, so that the reversing is realized.

Further, the sliding assembly 40 further includes a first stopper 411 and a second stopper 412, and the first stopper 411 and the second stopper 412 are respectively fixed on the pistons 41 at two ends of the guide frame 42 for axially limiting the sliding block 30.

In this embodiment, when the refrigeration system is in the refrigeration mode, the first stopper 411 abuts against a side wall of the valve chamber 21, the second connection pipe 232 and the communication chamber 31 communicate with the third connection pipe 233, and the first connection pipe 231 communicates with the fourth connection pipe 234 through the valve chamber 21; when the refrigeration system needs to be switched to the heating mode, the sliding assembly 40 slides, the second stopper 412 abuts against the side wall of the valve cavity 21, the third connecting pipe 233 and the communication cavity 31 are communicated with the fourth connecting pipe 234, and the first connecting pipe 231 is communicated with the second connecting pipe 232 through the valve cavity 21.

Furthermore, the two ends of the valve body 20 are covered with end covers 50, the end covers 50 are connected with the valve body 20 in a sealing mode, and the arrangement of the end covers 50 can not only avoid leakage of fluid, but also prevent dust and water.

In the working process of the reversing valve 101, when fluid flows into the communicating cavity 31 from one connecting pipe 23 and flows out from the other connecting pipe 23, due to the convex arc surface 111 arranged at the flow through hole 11, the flow passage of the fluid is the U-shaped passage 12, and the turning position of the fluid is the arc surface 111, so that the fluid turns at a first corner at a slow speed and then turns at a fast speed when passing through a second corner, thereby reducing the turbulent vortex of the fluid at the corner, reducing the pressure loss and avoiding the phenomenon of blocking the fluid flow.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. The utility model provides a disk seat of switching-over valve, its characterized in that, the disk seat includes pedestal (10), follows the thickness direction of pedestal (10), set up a plurality of circulation holes (11) that run through the setting on pedestal (10), every circulation hole (11) are in be equipped with outward convex arc surface (111) on the same side of pedestal (10).

2. The valve seat of the reversing valve according to claim 1, characterized in that the circular arc surface (111) is in smooth transition with the corresponding side surface of the seat body (10).

3. The valve seat of a reversing valve according to claim 1, characterized in that the circular arc surfaces (111) on two adjacent flow holes (11) can form a U-shaped channel (12).

4. The valve seat of the reversing valve according to claim 1, wherein one side of the seat body (10) away from the arc surface (111) is provided with an arc surface (13).

5. A reversing valve, characterized by comprising a valve body (20), a sliding block (30) and a valve seat of the reversing valve according to any one of claims 1 to 4, wherein the valve body (20) is internally provided with a valve cavity (21), the valve seat is fixedly arranged in the valve cavity (21), and the sliding block (30) is arranged in the valve cavity (21) and can slide on the valve seat.

6. The reversing valve according to claim 5, characterized in that the valve seat of the reversing valve comprises a seat body (10), a plurality of flow holes (11) are formed in the seat body (10) along the thickness direction of the seat body (10), and each flow hole (11) is provided with an outwardly convex arc surface (111) on the same side surface of the seat body (10);

the valve body (20) is provided with a plurality of mounting holes (22), the reversing valve further comprises a plurality of connecting pipes (23), the connecting pipes (23) are correspondingly mounted in the mounting holes (22), and one ends, far away from the arc surface (111), of the connecting pipes (23) on the seat body (10) are connected with the seat body (10) through the circulation holes (11).

7. A reversing valve according to claim 6, characterized in that the slider (30) has a communication chamber (31) inside, said communication chamber (31) being able to communicate arbitrarily two adjacent flow holes (11).

8. The reversing valve according to claim 5, wherein the slider (30) is attached to a sliding assembly (40), the sliding assembly (40) being capable of sliding the slider (30) on the valve seat.

9. The reversing valve according to claim 8, characterized in that the sliding assembly (40) comprises a piston (41) and a guide frame (42), the slider (30) being connected to the guide frame (42), the piston (41) being connected to both ends of the guide frame (42).

10. The reversing valve according to claim 5, characterized in that the valve body (20) is further covered with end caps (50) at both ends, and the end caps (50) are hermetically connected with the valve body (20).