CN212616382U - Valve device - Google Patents

Abstract

The application relates to the technical field of refrigeration control, in particular to a valve device, which comprises a valve body and a valve rod, wherein the valve body comprises a first valve port and a second valve port; the valve body further comprises a first circulation channel and a second circulation channel, the first circulation channel is communicated with the second circulation channel through a first valve port, the valve device further comprises a first cavity, and the valve rod can be close to or far away from the first valve port; the valve device further comprises a first core body and a second core body, the first core body can move axially in the first cavity, the first core body can be close to or far away from the second valve port, the first core body is located above the second valve port, the second core body is located below the second valve port, the second core body is fixedly connected or in limiting connection with the valve body, the first core body is provided with a first throttling channel, the second core body is provided with a second throttling channel, and the first throttling channel can be communicated with the second throttling channel. The bidirectional throttling function can be realized.

Description

Valve device

Technical Field

The application relates to the technical field of refrigeration control, in particular to a valve device.

Background

In an air conditioning system, a valve device is mainly used for connecting an indoor unit and an outdoor unit, and has a shut-off function. The air conditioning system also needs a throttling element to realize the throttling function, and the commonly used throttling filter device in the air conditioning system at present is a main capillary tube, an auxiliary capillary tube, a filter and a one-way valve. The valve device and the throttling filter device are relatively independent components in the pipeline of the air conditioning system.

SUMMERY OF THE UTILITY MODEL

The application provides a novel valve gear, can realize two-way throttle function.

The present application provides a valve device, comprising: the valve comprises a valve body and a valve rod, wherein the valve body comprises a first valve port and a second valve port;

the valve body further comprises a first circulation channel and a second circulation channel, the first circulation channel is communicated with the second circulation channel through the first valve port, the valve device further comprises a first cavity, and the valve rod can approach or be far away from the first valve port;

the valve device further comprises a first core body and a second core body, the first core body can axially move in the first cavity, the first core body can be close to or far away from the second valve port, the first core body is located above the second valve port, the second core body is located below the second valve port, the second core body is fixedly connected or in limited connection with the valve body, the first core body is provided with a first throttling channel, the second core body is provided with a second throttling channel, and the first throttling channel can be communicated with the second throttling channel.

The valve device comprises a first valve core and a second valve core, wherein the first valve core is provided with a first throttling channel, the second valve core is provided with a second throttling channel, and the first throttling channel is communicated with the second throttling channel, so that the two-way throttling function can be realized.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a cross-sectional view of a valve device provided in accordance with an embodiment of the present application in one state of use;

FIG. 2 is a cross-sectional view of a valve device provided in accordance with an embodiment of the present application in another use configuration;

FIG. 3 is a cross-sectional view of a valve body of a valve device provided in an embodiment of the present application;

FIG. 4 is a cross-sectional view of a second core of a valve device provided in an embodiment of the present application;

fig. 5 is a cross-sectional view of a first core of a valve device provided in an embodiment of the present application.

Reference numerals:

1-a valve body;

11-a first valve port;

12-a second valve port;

13-a first flow-through channel;

131-a first cavity;

132-a second cavity;

14-a second flow-through channel;

2-a first core;

21-a first throttling channel;

22-conical surface;

23-a main body portion;

24-a guide;

241-inclined plane;

3-a second core;

31-a second throttling channel;

311-first orifice;

312 — a second orifice;

312 a-stepped bore;

4-a valve stem;

41-sealing ring;

42-a retainer ring;

5-a first filter screen;

6-a second filter screen;

7-sealing the cap;

8-a pipe connection nut;

9-valve cap.

Detailed Description

For better understanding of the technical solutions of the present application, the following detailed descriptions of the embodiments of the present application are provided with reference to the accompanying drawings.

It should be understood that the embodiments described are only a few embodiments of the present application, and not all embodiments. 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 application.

The terminology used in the embodiments of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the examples of this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It should be noted that the terms "upper", "lower", "left", "right", and the like used in the embodiments of the present application are described in terms of the angles shown in the drawings, and should not be construed as limiting the embodiments of the present application. In addition, in this context, it will also be understood that when an element is referred to as being "on" or "under" another element, it can be directly on "or" under "the other element or be indirectly on" or "under" the other element via an intermediate element.

In one embodiment, the present application is described in further detail below with reference to specific embodiments and accompanying drawings.

As shown in fig. 1 to 5, the present embodiment provides a valve device including: the valve comprises a valve body 1 and a valve rod 4, wherein the valve body 1 comprises a first valve port 11 and a second valve port 12; the valve body 1 further comprises a first circulation channel 13 and a second circulation channel 14, the first circulation channel 13 is communicated with the second circulation channel 14 through the first valve port 11, the valve device further comprises a first cavity 131, and the valve rod 4 can approach or be far away from the first valve port 11; the valve device further comprises a first core body 2 and a second core body 3, the first core body 2 can axially move in the first cavity 131, the first core body 2 can approach or be far away from the second valve port 12, the first core body 2 is located above the second valve port 12, the second core body 3 is located below the second valve port 12, the second core body 3 is fixedly connected or in limited connection with the valve body 1, the first core body 2 is provided with a first throttling channel 21, the second core body 3 is provided with a second throttling channel 31, and the first throttling channel 21 can be communicated with the second throttling channel 31.

Since the first core 2 can move back and forth (i.e. move up and down) under the impact of the fluid, when the first core 2 moves towards the second core 3 (i.e. the first core 2 moves down), as shown in fig. 1, the first core 2 can block the second valve port 12, so that the fluid flows to one port of the valve body 1 through the first throttling passage 21 and the second throttling passage 31, and at this time, the two passages can simultaneously play a role of throttling, so that the amount of the fluid flowing out is small; when the first core 2 moves in a direction away from the second core 3 (i.e. the first core 2 moves upward), as shown in fig. 2, the first core 2 is separated from the second valve port 12, so that the fluid flows into the valve cavity formed by the outer wall of the first core 2 and the valve body 1 through the second throttling passage 31, and then the fluid flows to the other port of the valve body 1, at this time, only the second throttling passage 31 plays a role of throttling, so that the amount of the fluid flowing out is large, and the flow rate of the fluid can be changed by the movement of the first core 2. Therefore, the two-way throttling function can be achieved through the arrangement of the two throttling channels, and the valve body 1 is convenient to machine.

The connection mode of the second core body 3 and the valve body 1 comprises fixed connection and limiting connection, and the fixed connection refers to that the filter piece and the connecting pipe are installed after the filter piece and the connecting pipe are directly installed in the valve body in a press fit mode; the limit connection can keep the valve body limited by a small gap through the connecting pipe.

When the fluid flows from the outdoor air conditioner to the indoor air conditioner through the valve device, the required amount of the fluid is small; when the fluid passes through the valve device from the indoor air conditioner to the outdoor air conditioner, the demand of the fluid is large, so the movement of the first core body 2 is needed to adjust the flow rate of the fluid, and the flow rate of the fluid can be determined according to the specific use requirement.

In the embodiment of the application, the first throttling channel 21 and the second throttling channel 31 are coaxially arranged and communicated, so that the stability of the first core body is improved, and the two throttling channels are both positioned on the valve core, so that the processing is easy. However, in the prior art, only a movable valve core is arranged, and a small hole needs to be formed in the valve device to serve as an orifice, and if the orifice is coaxial with the orifice in the valve core, the requirement on machining of the valve body is very high, and the machining of the orifice is very difficult. This application can play the effect of throttle through the setting of the second core 3 that has the throttle passageway, consequently need not set up the aperture on valve gear, also can realize two-way throttle, and valve body 1 processing is also convenient simultaneously.

As shown in fig. 4, the second throttle passage 31 includes a first throttle hole 311 and a second throttle hole 312, the second throttle hole 312 is located at an end portion of the first throttle hole 311, and the aperture of the second throttle hole 312 is larger than that of the first throttle hole 311. The first orifice 311 is a main orifice of the second throttle passage 31, and the second orifice 312 is provided to avoid the problem of refrigerant noise due to a sudden change in the diameter of the refrigerant after the refrigerant enters the second throttle passage and flows therethrough.

Specifically, the second orifice 312 is positioned at both ends of the first orifice 311, and since the fluid in the valve device flows in both directions, the second orifice 312 is positioned at both ends of the first orifice 311, and the generation of refrigerant noise can be avoided regardless of the direction in which the fluid flows. At least one second orifice 312 is provided as a stepped hole 312a, and the stepped hole 312a is provided to gradually reduce the diameter of the second orifice 312, thereby further avoiding the generation of refrigerant noise.

As shown in fig. 3, the valve body 1 further includes a second cavity 132, and the second cavity 132 and the first cavity 131 are respectively located at two sides of the second port 12 to facilitate the bidirectional fluid flow through the second port 12; and the first core 2 is located in the first cavity 131 and axially moves in the first cavity 131, and the second core 3 is located in the second cavity 132.

Wherein, the guide section that first cavity 131, second cavity 132 and second valve port 12 formed, guide section integrated into one piece has the convenient advantage of processing, and then is convenient for valve body 1 integrated into one piece.

Specifically, the aperture of the second valve port 12 is smaller than the aperture of the first cavity 12, so that the first core 2 is abutted against the second valve port 12. When fluid flows from the first core 2 to the second core 3 (i.e. from top to bottom), the fluid in the valve body 1 pushes the first core 2 to move downward, and the first core 2 abuts against the second valve port 12 under the impact of the fluid, at this time, the fluid can only flow through the first throttling channel 21 of the first core 2, and then enters the second throttling channel 31 of the second core 3 through the second valve port 12, and the two channels are throttled simultaneously, so that the amount of fluid flowing to the first port of the valve body 1 is small.

Further, one end surface of the first core 2 abutting against the second valve port 12 is provided with a tapered surface 22; after the first core 2 abuts against the second valve port 12, the first core 2 at least partially extends into the second valve port 12. The tapered surface 22 enables the first core 2 and the second valve opening 12 to be in line-face sealing (at this time, the outer wall of the first core 2 corresponds to a face, and the end of the second valve opening 12 corresponds to a line), and compared with the line-face sealing of the first core 2 and the second valve opening 12 (at this time, the outer wall of the first core 2 corresponds to a line, and the end of the second valve opening 12 corresponds to a face), the sealing effect of the outer wall of the first core 2 and the second valve opening 12 can be improved by avoiding the damage of the first core 2 during downward movement.

Further, the first core body 2 includes a main body portion 23 and a guide portion 24, and the tapered surface 22 is located at one end of the main body portion 23; the guide portion 24 is located on the peripheral side of the main body portion 23, and the guide portion 24 abuts against the side wall of the first cavity 13, so that when the first core body 2 moves up and down, the guide portion 24 can play a role in guiding, and the first core body 2 is prevented from shifting. Wherein, the end surface of the guide part 24 is provided with an inclined surface 241; the inclined surface 241 is aligned with the inclined direction of the tapered surface 22, and the sealing effect between the outer wall of the first core 2 and the second valve port 12 can be further improved.

As shown in fig. 1, the valve rod 4 is positioned inside the valve body 1 and is in threaded connection with the valve body 1; the movement section of the first core 2 can be adjusted by screwing the valve rod 4. When the valve rod 4 is screwed to enable the height of the first cavity 13 to be larger than that of the movable valve body 1, the movable valve body 1 can move in the first cavity 13; after screwing the valve rod 4 to make the valve rod 4 abut against the first core 2 and make the first core 2 block the first throttling channel 21, not only the first core 2 is limited from moving, but also the valve body 1 can be closed, and the valve device is closed.

Specifically, the sealing ring 41 is disposed on the periphery of the valve rod 4, so that the fluid inside the valve body 1 can be prevented from flowing out during or after the screwing process of the valve rod 4 is completed, and the valve body 1 is sealed.

Further, the peripheral side of the valve rod 4 is also provided with a retaining ring 42, and the retaining ring 42 can prevent the valve rod 4 from popping up under the pressure of fluid in the screwing process, so that the protective effect is achieved.

It should be noted that, the port of the valve body 1 where the valve rod 4 is installed is provided with a bonnet 9, and after the operation of the valve rod 4 is completed, the bonnet 9 can be screwed on the port, so as to further play a role of protection.

As shown in fig. 2, a first filter 5 is disposed at a first port of the valve body 1, and the first filter 5 is sleeved outside the second core body 3 to filter the fluid; and a second filter screen 6 is arranged at the second port of the valve body 1 to filter the fluid. The fluid outside is filtered by the filter net regardless of the direction from which the fluid enters the valve body 1 (or flows out of the valve body 1).

Wherein, the second port of the valve body 1 provided with the second filter screen 6 is provided with a sealing cap 7, so that the second filter screen 6 is prevented from being flushed out of the valve body 1 by fluid; after the sealing cap 7 is installed, the second port is provided with a connecting pipe nut 8 for connecting with an outdoor air conditioner.

In summary, the present application provides a valve device, which can reduce the processing difficulty of the valve body 1 through the optimized design of the structure of the valve device, and when the situation that throttling needs to be performed according to different specifications of a client or a system only needs to replace the second core 3, and the difficulty in various aspects such as clamping and the like is large in the case of directly processing the throttling hole on the valve body 1 for a turning process, the valve device provided by the present invention can ensure the coaxiality of the first core 2 and the second valve port 12 while using throttling models of different specifications according to the requirements of the client or the system by additionally arranging the second core 3 and fixedly connecting or limiting the second core 3 and the valve body 1, and only needs to directly replace the second core 3 without performing processing change on the valve body. The valve device is small in size, can realize a bidirectional throttling function, and can adjust the flow of the fluid only through the movement of the first core body 2; meanwhile, the valve body 1 can be integrally processed and formed, and small holes do not need to be formed in the valve body 1, so that the valve body has the advantage of convenience in processing.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (10)

1. A valve device, comprising: the valve comprises a valve body (1) and a valve rod (4), wherein the valve body (1) comprises a first valve port (11) and a second valve port (12);

the valve body (1) further comprises a first circulation channel (13) and a second circulation channel (14), the first circulation channel (13) and the second circulation channel (14) can be communicated through the first valve port (11), the valve device further comprises a first cavity (131), and the valve rod (4) can approach or be far away from the first valve port (11);

the valve device further comprises a first core body (2) and a second core body (3), the first core body (2) can move axially in the first cavity (131), the first core body (2) can approach or be far away from the second valve port (12), the first core body (2) is located above the second valve port (12), the second core body (3) is located below the second valve port (12), the second core body (3) is fixedly connected or in limited connection with the valve body (1), the first core body (2) is provided with a first throttling channel (21), the second core body (3) is provided with a second throttling channel (31), and the first throttling channel (21) is communicated with the second throttling channel (31).

2. A valve device according to claim 1, characterized in that the first throttling channel (21) and the second throttling channel (31) are coaxially arranged and communicate.

3. The valve device according to claim 1, wherein the second throttle passage (31) includes a first throttle hole (311) and a second throttle hole (312), the second throttle hole (312) is located at an end of the first throttle hole (311), and a hole diameter of the second throttle hole (312) is larger than a hole diameter of the first throttle hole (311).

4. A valve device according to claim 3, wherein the second throttle holes (312) are located at both ends of the first throttle hole (311), and at least one of the second throttle holes (312) is provided as a stepped hole (312 a).

5. A valve arrangement according to claim 1, characterized in that the first flow-through channel (13) further comprises a second cavity (132), the second cavity (132) and the first cavity (131) being located on either side of the second valve port (12);

and the first core (2) is located in the first cavity (131) and the second core (3) is located in the second cavity (132).

6. A valve arrangement according to claim 5, characterized in that the aperture of the second valve port (12) is smaller than the aperture of the first cavity (131), facilitating abutment of the first core (2) with the second valve port (12).

7. A valve device according to any one of claims 1-6, characterized in that one end surface of the first core (2) abutting the second port (12) is provided as a tapered surface (22);

after the first core body (2) is abutted with the second valve port (12), the first core body (2) at least partially extends into the second valve port (12).

8. The valve device according to claim 7, wherein the first core (2) comprises a main body portion (23) and a guide portion (24), the tapered surface (22) being located at one end of the main body portion (23);

the guide part (24) is positioned on the periphery of the main body part (23), and the end face of the guide part (24) is provided with an inclined surface (241);

the inclined surface (241) is aligned with the inclined direction of the tapered surface (22).

9. Valve device according to any of claims 1 to 6, wherein the valve stem (4) is located inside the valve body (1) and is screwed to the valve body (1);

the movement interval of the first core body (2) can be adjusted by screwing the valve rod (4).

10. A valve device according to any one of claims 1-6, characterized in that one port of the valve body (1) is provided with a first filter (5), the first filter (5) being fitted over the second core (3) for filtering the fluid;

and the other port of the valve body (1) is provided with a second filter screen (6) for filtering fluid.

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