CN114076229B

CN114076229B - Reversing valve

Info

Publication number: CN114076229B
Application number: CN202010844930.0A
Authority: CN
Inventors: 王文坤; 张克鹏; 郑明超
Original assignee: Dunan Environment Technology Co Ltd
Current assignee: Dunan Environment Technology Co Ltd
Priority date: 2020-08-20
Filing date: 2020-08-20
Publication date: 2024-05-17
Anticipated expiration: 2040-08-20
Also published as: CN114076229A

Abstract

The present application provides a reversing valve comprising: the valve body is provided with a valve cavity, a fluid inlet and a fluid outlet, the fluid inlet and the fluid outlet are communicated with the valve cavity, and the fluid inlet and the fluid outlet are respectively positioned at two sides of the valve body; the sliding block is movably arranged in the valve cavity, the top of the sliding block is arranged towards the fluid inlet, the bottom of the sliding block is arranged towards the fluid outlet, and the sliding block is used for blocking or conducting the fluid outlet; the buffer structure is arranged in the valve cavity and located above the sliding block, and the projection of the buffer structure in the vertical direction is at least partially located on the sliding block. According to the technical scheme provided by the application, the problem of loud noise of the reversing valve in the prior art during reversing can be solved.

Description

Reversing valve

Technical Field

The invention relates to the technical field of valve bodies, in particular to a reversing valve.

Background

At present, when the reversing valve in the existing air conditioning system is used for switching between refrigeration and heating, a sliding block in the reversing valve can move transversely. When the sliding block slides to the middle position, the gas leakage quantity of the two outlet pipelines and the low-pressure pipeline is minimum, and at the moment, the pressure at the inlet borne by the sliding block is maximum due to the action of high-pressure gas at the inlet of the reversing valve, so that the sliding noise of the sliding block is increased, and the normal use of the device is influenced.

Disclosure of Invention

The invention provides a reversing valve, which aims to solve the problem that the reversing valve in the prior art has loud noise during reversing.

The invention provides a reversing valve, which comprises: the valve body is provided with a valve cavity, a fluid inlet and a fluid outlet, the fluid inlet and the fluid outlet are communicated with the valve cavity, and the fluid inlet and the fluid outlet are respectively positioned at two sides of the valve body; the sliding block is movably arranged in the valve cavity, the top of the sliding block is arranged towards the fluid inlet, the bottom of the sliding block is arranged towards the fluid outlet, and the sliding block is used for blocking or conducting the fluid outlet; the buffer structure is arranged in the valve cavity and located above the sliding block, and the projection of the buffer structure in the vertical direction is at least partially located on the sliding block.

Further, the reversing valve further includes: the driving mechanism is arranged in the valve cavity and is in driving connection with the sliding block, the driving mechanism drives the sliding block to move in the valve cavity, and the buffer structure is arranged on the driving mechanism.

Further, the driving mechanism includes: the guide frame is movably arranged in the valve cavity, the guide frame is provided with an avoidance hole, the top of the sliding block is arranged in the avoidance hole in a penetrating mode, and the buffer structure is arranged on the guide frame and located above the sliding block.

Further, the buffer structure includes: the buffer support is fixedly arranged on the guide frame, and at least part of the buffer support is positioned above the top of the sliding block.

Further, the extending direction of the buffer support is the same as the moving direction of the sliding block, one end of the buffer support is located at one side of the sliding block, and the other end of the buffer support is located at the other side of the sliding block.

Further, the extending direction of the buffer support and the moving direction of the sliding block form an included angle, one end of the buffer support is located at one side of the sliding block, and the other end of the buffer support is located at the other side of the sliding block.

Further, the buffer support comprises a first supporting leg, a buffer section and a second supporting leg which are sequentially connected, the first supporting leg and the second supporting leg are fixedly connected with the guide frame respectively, the first supporting leg and the second supporting leg are located at two sides of the sliding block respectively, and the buffer section corresponds to the sliding block.

Further, the buffer structure and the guide frame synchronously move, the top of the buffer structure is used for blocking the fluid inlet, and the buffer structure is provided with a blocking position for blocking the fluid inlet and a conducting position for conducting the fluid inlet relative to the fluid inlet.

Further, the top of the buffer structure is provided with a round plugging structure, the size of the round plugging structure is matched with the size of the fluid inlet, and the round plugging structure is used for plugging the fluid inlet.

Further, a reinforcing structure is arranged on the buffer support.

Further, the valve body is provided with two fluid outlets, the valve body is also provided with a low-pressure channel, the low-pressure channel is positioned between the two fluid outlets, the fluid inlets are arranged corresponding to the low-pressure channel, the buffer support, the guide frame and the sliding block are of symmetrical structures, and the center line of the buffer support along the vertical direction, the center line of the guide frame along the vertical direction and the center line of the sliding block along the vertical direction are mutually overlapped.

Further, the driving mechanism further comprises two pistons, the two pistons are respectively arranged on two sides of the sliding block, two ends of the guide frame are respectively connected with the two pistons, and the fluid inlet and the fluid outlet are both arranged between the two pistons.

By applying the technical scheme of the invention, the reversing valve comprises a valve body, a sliding block and a buffer structure. Wherein, with buffer structure setting in the top of slider, make buffer structure at least part in the projection of vertical direction be located the slider, so set up can utilize buffer structure to block and cushion fluid inlet's fluid to reduce the impact of fluid to the slider, the positive pressure that the slider received reduces, then can reduce the friction of slider and valve body, and then can reduce the noise that the slider produced when removing.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:

fig. 1 shows a schematic structural diagram of a reversing valve provided according to an embodiment of the present invention;

fig. 2 shows a schematic structural view of a reversing valve according to an embodiment of the present invention;

fig. 3 is a schematic structural view showing a first embodiment of a cushioning bracket provided in accordance with the present invention;

fig. 4 shows a schematic structural diagram of a second embodiment of a cushioning bracket provided in accordance with the present invention;

fig. 5 shows a schematic structural view of a third embodiment of a cushioning bracket provided in accordance with the present invention;

Fig. 6 shows a schematic structural diagram of a fourth embodiment of a cushioning bracket provided in accordance with the present invention.

Wherein the above figures include the following reference numerals:

10. A valve body; 11. a valve cavity; 12. a fluid inlet; 13. a fluid outlet; 14. a low pressure passage;

20. A slide block;

30. A buffer bracket; 31. a first leg; 32. a buffer section; 33. a second leg; 34. a circular blocking structure; 35. a reinforcing structure;

41. A guide frame; 42. and (3) a piston.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

As shown in fig. 1 and 2, an embodiment of the present invention provides a reversing valve including: valve body 10, slider 20 and buffer structure. The valve body 10 is provided with a valve cavity 11, a fluid inlet 12 and a fluid outlet 13, wherein the fluid inlet 12 and the fluid outlet 13 are communicated with the valve cavity 11, and the fluid inlet 12 and the fluid outlet 13 are respectively positioned on two sides of the valve body 10. The slider 20 is movably disposed in the valve chamber 11, the top of the slider 20 is disposed toward the fluid inlet 12, the bottom of the slider 20 is disposed toward the fluid outlet 13, and the slider 20 is used to block or conduct the fluid outlet 13, specifically, the fluid inlet 12 can be connected to or disconnected from the fluid outlet 13 by moving the slider 20. The buffer structure is arranged in the valve cavity 11, the buffer structure is positioned above the sliding block 20, and the projection of the buffer structure in the vertical direction is at least partially positioned on the sliding block 20. The buffer structure may be fixed on the inner wall of the valve body 10, or may be fixed on other structures, so long as the slider 20 can be buffered, and the pressure applied to the slider 20 is reduced.

According to the device provided by the application, the buffer structure is arranged above the sliding block 20, so that the projection of the buffer structure in the vertical direction is at least partially positioned on the sliding block 20, and the buffer structure can be used for blocking and buffering the fluid in the fluid inlet 12 so as to reduce the impact of the fluid on the sliding block 20, and the friction between the sliding block 20 and the valve body 10 can be reduced when the positive pressure applied to the sliding block 20 is reduced, so that the noise generated when the sliding block 20 moves can be reduced.

Specifically, the reversing valve further comprises a driving mechanism, the driving mechanism is arranged in the valve cavity 11, the driving mechanism is in driving connection with the sliding block 20, and the driving mechanism drives the sliding block 20 to move in the valve cavity 11. In this embodiment, the buffer structure is provided on the driving mechanism. The technical scheme has a simple structure and is convenient for installing the buffer structure.

The driving mechanism comprises a guide frame 41, the guide frame 41 is movably arranged in the valve cavity 11, the guide frame 41 is provided with an avoidance hole, the top of the sliding block 20 is arranged in the avoidance hole in a penetrating mode, and the buffer structure is arranged on the guide frame 41 and located above the sliding block 20. By penetrating the slider 20 on the guide frame 41, the slider 20 can be moved by moving the guide frame 41. The buffer structure is mounted on the guide frame 41, and the buffer structure can be moved synchronously with the guide frame 41 and the slider 20, so that the slider 20 can be buffered at all times by the buffer structure. The structure is convenient for installing the buffer structure, can fully utilize the existing space and has low modification cost.

Specifically, the buffering structure includes a buffering support 30, the buffering support 30 is fixedly disposed on the guide frame 41, and at least part of the buffering support 30 is located above the top of the slider 20. The buffer bracket 30 is utilized to buffer the sliding block 20, so that the structure is simple, the cost is low, and the processing and the installation are convenient.

The buffer bracket 30 may be arranged in various ways and may span over the slider 20, or may be shielded over the slider 20 by a protruding structure of the buffer bracket 30, so long as the slider 20 is buffered.

As shown in fig. 3, in the first embodiment of the present application, the extending direction of the buffer bracket 30 is the same as the moving direction of the slider 20, and one end of the buffer bracket 30 is located at one side of the slider 20, and the other end of the buffer bracket 30 is located at the other side of the slider 20. With the above structure, the buffer bracket 30 can span the upper part of the slider 20, the shielding area of the buffer bracket 30 to the slider 20 is increased, and the buffer effect of the buffer bracket 30 to the slider 20 can be improved.

Specifically, the buffer bracket 30 includes a first leg 31, a buffer section 32 and a second leg 33 connected in sequence, the first leg 31 and the second leg 33 are respectively fixedly connected with the guide frame 41, the first leg 31 and the second leg 33 are respectively located at two sides of the slider 20, and the buffer section 32 is arranged corresponding to the slider 20. The first leg 31 and the second leg 33 may be disposed vertically or may be disposed obliquely. In the present embodiment, the first leg 31 and the second leg 33 are provided obliquely on the guide frame 41. The buffer section 32 is located directly above the slider 20.

The buffer structure moves synchronously with the guide frame 41, and has a blocking position for blocking the fluid inlet 12 and a conducting position for conducting the fluid inlet 12 relative to the fluid inlet 12. By sealing the fluid inlet 12 at the top of the buffer structure, the impact on the sliding block 20 after entering the valve cavity 11 from the fluid inlet 12 can be further slowed down, so that the noise generated by the sliding block 20 during movement can be further reduced, and the normal movement of the sliding block 20 is ensured.

Specifically, the top of the buffer structure can be a planar structure or an arc structure. In this embodiment, the top of the buffer structure is a planar structure, i.e., the buffer segment 32 is a planar structure. In order to better block the fluid inlet 12, the top of the buffer structure is further provided with a circular blocking structure 34, the dimensions of the circular blocking structure 34 being adapted to the dimensions of the fluid inlet 12 for blocking the fluid inlet 12 by the circular blocking structure 34.

Specifically, the valve body 10 has two fluid outlets 13, the valve body 10 further has a low pressure passage 14, the low pressure passage 14 is located between the two fluid outlets 13, and the fluid inlet 12 is disposed corresponding to the low pressure passage 14. Wherein, the buffer bracket 30, the guide frame 41 and the slider 20 are all symmetrical structures, and the center line of the buffer bracket 30 along the vertical direction, the center line of the guide frame 41 along the vertical direction and the center line of the slider 20 along the vertical direction are mutually overlapped. By means of the arrangement, when the sliding block 20 moves to the middle position (see fig. 2), at the moment, the two fluid outlets 13 in the valve body 10 are communicated with the low-pressure channel 14, the flow circulation is minimum, and under the condition that the fluid pressure at the fluid inlet 12 is maximum, the fluid inlet 12 is blocked through the top of the buffer bracket 30, so that the impact of fluid on the sliding block 20 can be further reduced, namely, the positive pressure applied to the sliding block 20 is reduced, the noise generated when the sliding block 20 moves can be further reduced, and the normal movement of the sliding block 20 can be further ensured.

The driving mechanism further comprises two pistons 42, the two pistons 42 are respectively arranged at two sides of the sliding block 20, two ends of the guide frame 41 are respectively connected with the two pistons 42, and the fluid inlet 12 and the fluid outlet 13 are respectively arranged between the two pistons 42. In the present embodiment, the guide frame 41 and the slider 20 are moved by the piston 42 so that the slider 20 can be smoothly switched.

As shown in fig. 4, in the second embodiment of the present application, the extending direction of the buffer bracket 30 has an included angle with the moving direction of the slider 20, one end of the buffer bracket 30 is located at one side of the slider 20, and the other end of the buffer bracket 30 is located at the other side of the slider 20. The angle may be set according to the requirement, and in this embodiment, the extending direction of the buffer bracket 30 is perpendicular to the moving direction of the slider 20.

Wherein, be provided with additional strengthening 35 on the buffer support 30, additional strengthening 35 can be structures such as turn-ups, rib, can improve the support strength of buffer support 30 through setting up additional strengthening 35.

As shown in fig. 5 and 6, the buffer bracket 30 provided in the third and fourth embodiments of the present application is provided with a flange on the buffer bracket 30, and the strength of the buffer bracket 30 is improved by the flange, where the flange may face the outside of the buffer bracket 30 or may face the inside of the buffer bracket 30, and may be set according to practical situations.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

In the description of the present invention, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely to facilitate description of the present invention and simplify the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present invention; the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "upper surface on … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present invention.

The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A reversing valve, characterized in that the reversing valve comprises:

The valve body (10) is provided with a valve cavity (11), a fluid inlet (12) and a fluid outlet (13), wherein the fluid inlet (12) and the fluid outlet (13) are communicated with the valve cavity (11), and the fluid inlet (12) and the fluid outlet (13) are respectively positioned at two sides of the valve body (10);

the sliding block (20) is slidably or movably arranged in the valve cavity (11), the top of the sliding block (20) is arranged towards the fluid inlet (12), the bottom of the sliding block (20) is arranged towards the fluid outlet (13), and the sliding block (20) is used for blocking or conducting the fluid outlet (13);

The buffer structure is arranged in the valve cavity (11), the buffer structure is positioned above the sliding block (20), and the projection of the buffer structure in the vertical direction is at least partially positioned on the sliding block (20);

The driving mechanism is arranged in the valve cavity (11), is in driving connection with the sliding block (20), drives the sliding block (20) to move in the valve cavity (11), and is arranged on the driving mechanism;

the driving mechanism includes: the guide frame (41) is movably arranged in the valve cavity (11), and the buffer structure is arranged on the guide frame (41) and is positioned above the sliding block (20);

The buffer structure moves synchronously with the guide frame (41), the top of the buffer structure is used for blocking the fluid inlet (12), and the buffer structure has a blocking position for blocking the fluid inlet (12) and a conducting position for conducting the fluid inlet (12) relative to the fluid inlet (12).

2. Reversing valve according to claim 1, characterized in that the guide frame (41) has an avoidance hole, in which the top of the slider (20) is threaded.

3. The reversing valve of claim 1, wherein the cushioning structure includes:

the buffer support (30) is fixedly arranged on the guide frame (41), and at least part of the buffer support (30) is positioned above the top of the sliding block (20).

4. A reversing valve according to claim 3, characterized in that the direction of extension of the damping bracket (30) is the same as the direction of movement of the slider (20), one end of the damping bracket (30) being located on one side of the slider (20), the other end of the damping bracket (30) being located on the other side of the slider (20).

5. A reversing valve according to claim 3, characterized in that the direction of extension of the damping bracket (30) is at an angle to the direction of movement of the slider (20), one end of the damping bracket (30) being located on one side of the slider (20), the other end of the damping bracket (30) being located on the other side of the slider (20).

6. A reversing valve according to claim 3, characterized in that the buffer support (30) comprises a first leg (31), a buffer section (32) and a second leg (33) which are connected in sequence, the first leg (31) and the second leg (33) are fixedly connected with the guide frame (41) respectively, the first leg (31) and the second leg (33) are located on two sides of the slider (20) respectively, and the buffer section (32) is arranged corresponding to the slider (20).

7. Reversing valve according to claim 1, characterized in that the top of the buffer structure is provided with a circular blocking structure (34), the size of the circular blocking structure (34) being adapted to the size of the fluid inlet (12), the circular blocking structure (34) being used for blocking the fluid inlet (12).

8. A reversing valve according to claim 3, characterized in that the damping bracket (30) is provided with a reinforcement structure (35).

9. A reversing valve according to claim 3, characterized in that the valve body (10) has two fluid outlets (13), the valve body (10) further has a low pressure passage (14), the low pressure passage (14) is located between the two fluid outlets (13), the fluid inlet (12) is provided corresponding to the low pressure passage (14), the buffer support (30), the guide frame (41) and the slider (20) are all of symmetrical structures, and a center line of the buffer support (30) in a vertical direction, a center line of the guide frame (41) in a vertical direction and a center line of the slider (20) in a vertical direction coincide with each other.

10. Reversing valve according to claim 1, wherein the driving mechanism further comprises two pistons (42), the two pistons (42) being arranged on both sides of the slider (20), respectively, the two ends of the guide frame (41) being connected to the two pistons (42), respectively, the fluid inlet (12) and the fluid outlet (13) being located between the two pistons (42).