CN114076229A

CN114076229A - Reversing valve

Info

Publication number: CN114076229A
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: 2022-02-22
Anticipated expiration: 2040-08-20
Also published as: CN114076229B

Abstract

The present invention provides a directional control 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 on 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 plugging or communicating the fluid outlet; the buffer structure is arranged in the valve cavity and located above the sliding block, and at least part of the projection of the buffer structure in the vertical direction is located on the sliding block. Through the technical scheme that this application provided, the big problem of noise when the switching-over of switching-over valve among the prior art 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 a reversing valve in an existing air conditioning system is switched between refrigeration and heating, a sliding block in the reversing valve can move transversely. When the slider slides to the intermediate position, the gas leakage amount of the two outlet pipelines and the low-pressure pipeline is minimum, and at the moment, due to the action of high-pressure gas at the inlet of the reversing valve, the pressure at the inlet born by the slider is maximum, so that the sliding noise of the slider 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 noise is high when the reversing valve in the prior art is reversed.

The invention 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 on 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 plugging or communicating the fluid outlet; the buffer structure is arranged in the valve cavity and located above the sliding block, and at least part of the projection of the buffer structure in the vertical direction is located on the sliding block.

Further, the reversing valve also comprises: 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 drive mechanism includes: the leading truck movably sets up in the valve pocket, and the leading truck has dodges the hole, and the top of slider is worn to establish and is dodged downtheholely, and buffer structure sets up on the leading truck, and is located the top of slider.

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

Furthermore, the extending direction of the buffer support is the same as the moving direction of the slide block, one end of the buffer support is positioned on one side of the slide block, and the other end of the buffer support is positioned on the other side of the slide block.

Furthermore, an included angle is formed between the extending direction of the buffering support and the moving direction of the sliding block, one end of the buffering support is located on one side of the sliding block, and the other end of the buffering support is located on the other side of the sliding block.

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

Further, the buffer structure and the guide frame move synchronously, the top of the buffer structure is used for plugging the fluid inlet, and the buffer structure is provided with a plugging position for plugging 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 circular blocking structure, the size of the circular blocking structure is matched with that of the fluid inlet, and the circular blocking structure is used for blocking the fluid inlet.

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

Furthermore, the valve body is provided with two fluid outlets and a low-pressure channel, the low-pressure channel is located between the two fluid outlets, the fluid inlets are arranged corresponding to the low-pressure channel, the buffering support, the guide frame and the sliding block are all of symmetrical structures, and the center line of the buffering support in the vertical direction, the center line of the guide frame in the vertical direction and the center line of the sliding block in the vertical direction coincide with each other.

Furthermore, 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 located 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, set up buffer structure in the top of slider, make buffer structure at the projection of vertical direction at least part be located the slider, so set up and to utilize buffer structure to block and cushion the fluid of fluid inlet 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 incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 illustrates a schematic structural diagram of a reversing valve provided in accordance with an embodiment of the present invention;

FIG. 2 illustrates a further schematic structural view of a reversing valve provided in accordance with an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a first embodiment of a buffer support provided in accordance with the present invention;

FIG. 4 is a schematic structural view of a second embodiment of a buffer support according to the present invention;

FIG. 5 is a schematic structural view showing a third embodiment of a buffer bracket according to the present invention;

fig. 6 shows a schematic structural diagram of a fourth embodiment of the buffer bracket provided by the invention.

Wherein the 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 channel;

20. a slider;

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. a piston.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 and 2, an embodiment of the present invention provides a direction valve including: valve body 10, slider 20 and buffer structure. The valve body 10 has a valve cavity 11, a fluid inlet 12 and a fluid outlet 13, the fluid inlet 12 and the fluid outlet 13 are both connected to the valve cavity 11, and the fluid inlet 12 and the fluid outlet 13 are respectively located on two sides of the valve body 10. The slide block 20 is movably disposed in the valve chamber 11, a top portion of the slide block 20 is disposed toward the fluid inlet 12, a bottom portion of the slide block 20 is disposed toward the fluid outlet 13, and the slide block 20 is used for blocking or communicating the fluid outlet 13, and specifically, the fluid inlet 12 can be connected or disconnected with the fluid outlet 13 by moving the slide block 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 can be fixed on the inner wall of the valve body 10, or can be fixed on other structures, as long as the buffer structure can buffer the sliding block 20 and reduce the pressure on the sliding block 20.

Through the device that this application provided, with buffer structure setting in the top of slider 20, make buffer structure at least partly be located slider 20 in vertical direction's projection, so set up and to utilize buffer structure to block and cushion fluid inlet 12 to reduce the impact of fluid to slider 20, the positive pressure that slider 20 received reduces, then can reduce the friction between slider 20 and valve body 10, and then can reduce the noise that slider 20 produced when removing.

Specifically, the reversing valve further comprises a driving mechanism, the driving mechanism is arranged in the valve cavity 11 and 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 drive mechanism. Above-mentioned technical scheme simple structure is convenient for install buffer structure.

Wherein, actuating mechanism includes leading truck 41, and leading truck 41 movably sets up in valve pocket 11, and leading truck 41 has dodges the hole, and the top of slider 20 is worn to establish in dodging the hole, and buffer structure sets up on leading truck 41, and is located the top of slider 20. By inserting the slider 20 into 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 move synchronously with the guide frame 41 and the slider 20, so that the slider 20 can be buffered at any time by the buffer structure. The structure is convenient for installing the buffer structure, can fully utilize the existing space and has low change cost.

Specifically, the buffering structure comprises a buffering bracket 30, the buffering bracket 30 is fixedly arranged on the guide frame 41, and at least part of the buffering bracket 30 is positioned above the top of the sliding block 20. The slide block 20 is buffered by the buffer bracket 30, and the buffer bracket has a simple structure and low cost, and is convenient to process and install.

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

As shown in fig. 3, in the first embodiment of the present invention, the extension 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. Through the structure, the buffer bracket 30 can stretch over the slide block 20, the shielding area of the buffer bracket 30 for the slide block 20 is increased, and the buffer effect of the buffer bracket 30 for the slide block 20 can be improved.

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

Wherein the buffer structure moves synchronously with the guiding frame 41, 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. The fluid inlet 12 is blocked by the top of the buffer structure, so that the impact on the sliding block 20 after the fluid inlet 12 enters the valve cavity 11 can be further relieved, the noise generated when the sliding block 20 moves can be further reduced, and the normal movement of the sliding block 20 is ensured.

Specifically, the top of the buffer structure may 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 section 32 is a planar structure. For better blocking of the fluid inlet 12, the top of the cushioning structure is further 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 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. The buffer bracket 30, the guide frame 41 and the slide block 20 are all of a symmetrical structure, and a center line of the buffer bracket 30 in the vertical direction, a center line of the guide frame 41 in the vertical direction and a center line of the slide block 20 in the vertical direction are overlapped with each other. With such an arrangement, when the slider 20 moves to the intermediate position (see fig. 2), at this time, the two fluid outlets 13 and the low-pressure channel 14 in the valve body 10 are communicated with each other, the flow rate is the smallest, and the fluid inlet 12 is blocked by the top of the buffer support 30 under the condition that the fluid pressure at the fluid inlet 12 is the largest, so that the impact of the fluid on the slider 20 can be further reduced, that is, the positive pressure applied to the slider 20 is reduced, and then the noise generated when the slider 20 moves can be reduced, so that the normal movement of the slider 20 can be further ensured.

The driving mechanism further includes two pistons 42, the two pistons 42 are respectively disposed at two sides of the sliding block 20, two ends of the guide frame 41 are respectively connected to the two pistons 42, and the fluid inlet 12 and the fluid outlet 13 are both located between the two pistons 42. In this embodiment, the piston 42 moves the guide frame 41 and the slider 20, so that the slider 20 can be smoothly switched.

As shown in fig. 4, in the second embodiment of the present invention, the extending direction of the buffer bracket 30 forms 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 size of the included angle can 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 buffering support 30, additional strengthening 35 can be for structures such as turn-ups, rib, can improve buffering support 30's support intensity through setting up additional strengthening 35.

As shown in fig. 5 and 6, in the buffer bracket 30 provided in the third and fourth embodiments of the present application, a flanging is disposed on the buffer bracket 30, and the strength of the buffer bracket 30 is improved by the flanging, wherein the flanging may be disposed toward the outer side of the buffer bracket 30 or the inner side of the buffer bracket 30, and may be disposed according to actual 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 example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and in the case of not making a reverse description, these orientation words do not indicate and imply that the device or element being referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be considered as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship 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 of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement 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, comprising:

a valve body (10) having a valve cavity (11), a fluid inlet (12) and a fluid outlet (13), the fluid inlet (12) and the fluid outlet (13) both communicating with the valve cavity (11), the fluid inlet (12) and the fluid outlet (13) being located on either side of the valve body (10), respectively;

the sliding block (20) is 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 plugging or communicating 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).

2. The reversing valve of claim 1, further comprising:

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

3. The reversing valve of claim 2, wherein the drive mechanism comprises:

leading truck (41), movably set up in valve pocket (11), leading truck (41) have dodge the hole, the top of slider (20) is worn to establish dodge downtheholely, buffer structure sets up on leading truck (41), and be located the top of slider (20).

4. The reversing valve of claim 3, wherein the cushion structure comprises:

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

5. The reversing valve according to claim 4, characterized in that the cushioning bracket (30) extends in the same direction as the slider (20), one end of the cushioning bracket (30) being located on one side of the slider (20) and the other end of the cushioning bracket (30) being located on the other side of the slider (20).

6. The reversing valve according to claim 4, characterized in that the extension direction of the damping support (30) has an angle with the moving direction of the slide (20), one end of the damping support (30) is located at one side of the slide (20), and the other end of the damping support (30) is located at the other side of the slide (20).

7. The reversing valve according to claim 4, characterized in that the buffer bracket (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 respectively fixedly connected with the guide frame (41), the first leg (31) and the second leg (33) are respectively positioned at two sides of the sliding block (20), and the buffer section (32) is arranged corresponding to the sliding block (20).

8. A reversing valve according to claim 3, characterized in that the damping structure moves synchronously with the guide frame (41), that the top of the damping structure is adapted to block the fluid inlet (12), and that the damping structure has a blocking position with respect to the fluid inlet (12) for blocking the fluid inlet (12) and a conducting position for conducting the fluid inlet (12).

9. The reversing valve according to claim 8, characterized in that the top of the cushioning structure has 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 adapted to block the fluid inlet (12).

10. Reversing valve according to claim 4, characterized in that the damping bracket (30) is provided with a reinforcement structure (35).

11. The reversing valve according to claim 4, 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 disposed corresponding to the low-pressure passage (14), the buffer bracket (30), the guide bracket (41) and the sliding block (20) are all symmetrical structures, and a center line of the buffer bracket (30) in the vertical direction, a center line of the guide bracket (41) in the vertical direction and a center line of the sliding block (20) in the vertical direction coincide with each other.

12. The reversing valve according to claim 3, wherein the driving mechanism further comprises two pistons (42), the two pistons (42) are respectively disposed at two sides of the slider (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 both located between the two pistons (42).