CN110375128A - A kind of valve and air-conditioning - Google Patents

Abstract

The present invention relates to daily device arts, and in particular to a kind of valve and air-conditioning.The valve includes ontology and sealing ring, and the outer surface of the ontology has the seal groove of closed hoop；The sealing ring is closed annular structure；The outer contour in the first section that the cell wall of the seal groove is intercepted by the plane of the axis of the excessively described seal groove is arc, the outer contour in the second section that the outer surface of the sealing ring is intercepted by the plane is circle, and the radius in first section is less than or equal to the radius in second section.Valve provided by the present invention is even with after a period of time, or uses at low ambient temperatures, can also guarantee sealed connection effect with higher between sealing ring and seal groove substantially, thus the case where preventing valve seal failure.

Description

A valve and air conditioner

technical field

The invention relates to the technical field of household devices, in particular to a valve and an air conditioner.

Background technique

There are many types of valves, and in order to ensure that the valve has good sealing performance, the valve is usually provided with a sealing ring, and the sealing ring is installed in the sealing groove of the sealing ring. The current sealing groove is usually a rectangular structure, and a reliable sealing effect can be formed between the valve and the valve installation pipeline by causing a certain elastic deformation of the sealing ring. However, with the increase of the use time of the sealing ring, the elastic capacity of the sealing ring will deteriorate, which will cause the sealing effect of the valve to deteriorate; at the same time, in the winter in the north, due to the low outside temperature, the sealing ring will have a certain amount of shrinkage. And it will further reduce the elastic ability of the sealing ring, which may cause a gap between the sealing ring and the groove wall of the sealing groove, thereby causing the valve seal to fail, thereby causing fluid leakage inside the pipeline.

SUMMARY OF THE INVENTION

(1) The technical problem to be solved by the present invention is: at present, the sealing ring in the valve increases with the length of use, and is affected by the low temperature environment, which is prone to shrinkage and decrease in elastic capacity, etc., resulting in valve sealing failure and leakage of fluid inside the pipeline. The problem.

(2) Technical solutions

In order to achieve the above technical problems, a first aspect of the present invention provides a valve, which includes:

a body, the outer surface of the body has a closed annular sealing groove;

a sealing ring, the sealing ring is a closed annular structure;

Wherein, the outer contour of the first cross-section of the groove wall of the sealing groove is cut by the plane passing through the axis of the sealing groove is arc-shaped, and the outer surface of the sealing ring is cut by the plane. The second cross-section The outer contour line of is a circle, and the radius of the first section is less than or equal to the radius of the second section.

Optionally, the sealing ring is made of elastic material.

Optionally, the outer contour of the first cross section is an arc.

Optionally, the outer contour line of the first cross section is an arc.

Optionally, the plane of symmetry of the sealing groove itself is perpendicular to the axis of the sealing groove.

Optionally, the radius of the first section is equal to the radius of the second section.

Optionally, the sealing ring is made of hydrogenated nitrile rubber or neoprene.

Optionally, the sealing ring is a solid structure.

Optionally, the radius of the first section is smaller than the radius of the second section.

Based on the valve provided by any one of the above, the second aspect of the present invention also provides an air conditioner, which includes any of the above valves.

(3) Beneficial effects

In the valve provided by the present invention, the body is provided with a sealing groove, and the groove wall of the sealing groove is an annular arc structure; correspondingly, the sealing ring is an annular circular structure; The radius of the first section is less than or equal to the radius of the second section of the outer surface of the sealing ring, so that after the sealing ring is installed in the sealing groove, a certain extrusion force will be generated between the sealing ring and the pipe. Under the action of the pressing force, the sealing ring can form a reliable sealing connection with the sealing groove, and because the structure of the sealing ring and the sealing groove is suitable, it is not necessary to make the sealing ring elastically deform to fill the edge of the sealing groove. At the same time, since the initial volume of the sealing ring is larger than the volume of the sealing groove, even if the elastic capacity of the sealing ring decreases or shrinks and deforms within a certain range with the increase of the service time of the valve, the sealing ring and the sealing ring will not be damaged. The sealing connection relationship between the groove walls of the sealing groove can further prevent the problem of sealing failure between the sealing groove and the sealing ring, and ensure that the fluid in the pipeline will not leak.

Description of drawings

The advantages of the above and/or additional aspects of the present invention will become apparent and readily understood from the following description of embodiments in conjunction with the accompanying drawings, wherein:

FIG. 1 is a schematic cross-sectional view of a valve provided by an embodiment of the present invention.

reference number

1- Ontology;

11-seal groove;

2- Sealing ring.

Detailed ways

In order to understand the above objects, features and advantages of the present invention more clearly, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present invention and the features in the embodiments may be combined with each other under the condition of no conflict.

As shown in FIG. 1 , the present invention provides a valve that can be used with a pipeline. The valve includes a body 1 and a sealing ring 2 , a sealing groove 11 is provided on the outer surface of the body 1 , and the sealing ring 2 is installed in the sealing groove 11 . In order to ensure high sealing performance between the valve and the aforementioned pipeline, in the valve provided by the present invention, the sealing groove 11 is a closed annular structure, and correspondingly, the sealing ring 2 is also a closed annular structure, so that the two are mutually When mating, a part of the sealing ring 2 is provided in the sealing groove 11 at any position in its own circumferential direction, which can ensure good sealing between the valve and the aforementioned pipeline.

With the increase of the working time of the sealing ring 2; at the same time, under the conditions of low temperature such as northern winter, the elastic capacity of the sealing ring 2 may decrease. Further, in the design and manufacture of the valve provided by the present invention, By designing the specific structure of the sealing groove 11 , the outer contour of the first cross-section of which the groove wall of the sealing groove 11 is cut by the plane passing through the axis of the sealing groove can be arc-shaped. The specific structure makes the outer contour of the second section cut by the outer surface of the sealing ring 2 to be circular; at the same time, the radius of the first section is smaller than or equal to the radius of the second section; in this case After the sealing ring 2 is installed in the sealing groove 11, the outer surface of the sealing ring 2 can be directly attached to the groove wall of the sealing groove 11. Since the initial volume of the sealing ring 2 is larger than that of the sealing groove 11, the Under the extrusion action between the pipe and the body 1, the sealing ring 2 and the sealing groove 11 can have a good sealing connection relationship; and since the shape of the sealing ring 2 and the sealing groove 11 are suitable, there is no need to make the sealing ring 2 produce Squeeze and deform to fill the edges or corners of the sealing groove 11, so that even if the elastic capacity of the sealing ring 2 decreases, or a certain shrinkage deformation occurs, the sealing connection between the sealing ring 2 and the sealing groove 11 will not be basically broken. It can ensure a high sealing connection effect between the valve and the pipeline. In addition, in the process of designing and producing the valve, those skilled in the art can flexibly determine the dimensions of the sealing ring 2 and the sealing groove 11 at the corresponding positions according to factors such as the working place and the design service life of the valve, so as to ensure The sealing ring 2 and the sealing groove 11 have high sealing reliability.

Wherein, when the outer contour line of the first section is an elliptical arc, the radius of the first section is the short radius of the ellipse where the arc is located, so that no matter how the sealing ring changes, the distance between the sealing ring 2 and the sealing groove 11 can be guaranteed. There are always two sealing connection lines between them, which can basically ensure that the sealing groove 11 and the sealing ring 2 have a required sealing connection relationship.

In addition, the direction in which the axis of the sealing groove 11 is located may be the direction Z in FIG. 1 , and there are innumerable planes passing through the axis of the sealing groove 11 . It should be noted that, due to factors such as processing technology or machining accuracy, the outer contour of the first cross section is not arcuate, and/or the second cross section is not circular, etc., also within the protection scope of the present invention. For example, in order to facilitate the installation of the sealing ring 2 to the sealing groove 11, prevent the edge of the sealing groove 11 from cutting the sealing ring 2, and form a chamfer on the edge of the sealing groove 11, so that the outer contour of the first cross section is not arc-shaped The solution is also within the protection scope of the present invention.

Specifically, the body 1 can be made of hard materials such as metal, so as to ensure that after the body 1 is installed in the pipeline, even if the body 1 and the pipeline are squeezed against each other, the body 1 will not be compressed and deformed. Under the action, it can ensure a good sealing connection effect between the body 1 and the inner wall of the pipeline; those skilled in the art can determine the specific material of the body 1 according to the use scene of the valve and other factors. For example, the valve can be used in air conditioners, In order to connect and cut off the refrigerant passage between the indoor unit and the outdoor unit of the air conditioner, considering the comprehensive cost and performance, the main body 1 can be made of HPb59-1 or C3771 lead brass; The manufacturing process of the body 1 is integrally formed. The sealing ring 2 is preferably made of elastic materials such as rubber, so that after the sealing ring 2 is installed in the sealing groove 11, the sealing ring 2 can be elastically deformed to a certain extent, so as to make the sealing ring 2 fit with the sealing groove 11. The effect is better, so as to further improve the air tightness between the sealing ring 2 and the sealing groove 11; correspondingly, when the valve is applied to an air conditioner, the sealing ring 2 can be elastic such as hydrogenated nitrile rubber or neoprene rubber. It is made of materials with better performance and better fluorine resistance, thereby further preventing the sealing performance of the sealing ring 2 from failing due to the long service time of the valve, causing the freon and other fluids in the pipeline to escape from the connection between the valve and the pipeline. Give way.

Based on the fact that the sealing ring 2 is made of elastic material, in order to further improve the sealing connection effect between the sealing ring 2 and the sealing groove 11, preferably, the outer contour line of the first cross-section can be an arc, in this case, The body 1 can be an integral structure, and the sealing ring 2 can be installed into the sealing groove 11 through the gap on the outer periphery of the sealing groove 11; meanwhile, after the sealing ring 2 and the body 1 are installed into the pipeline together, the sealing ring 2 will There is a mutual extrusion effect with the pipeline. When the sealing ring 2 is in extrusion deformation, since the volume of the sealing ring 2 is larger than the volume of the sealing groove 11, the sealing connection relationship between the entire valve and the pipeline, and the sealing ring 2 The sealing connection relationship with the sealing groove 11 can be further improved, which can further strengthen the sealing connection relationship between the valve and the pipeline.

Preferably, the outer contour of the first cross-section can be a superior arc. In this case, the sealing effect between the sealing ring 2 and the sealing groove 11 is better, and the sealing ring 2 can be easily installed into the sealing groove 11 At the same time, the installation space in the sealing groove 11 is relatively large, and the degree of compression of the sealing ring 2 is relatively small, so that the installation difficulty between the entire valve and the pipeline can not be increased too much under the condition of ensuring the sealing performance. That is, when the valve is installed in the pipeline, it is not necessary to generate a large amount of compression for the sealing ring 2, which can reduce the installation difficulty between the valve and the pipeline to a certain extent. Specifically, the angle spanned by the outer contour line of the first section may be determined according to actual requirements, and preferably, the angle spanned by the outer contour line of the first section may be 270°-350°.

In order to further reduce the installation difficulty of the sealing ring 2, preferably, the symmetry plane of the sealing groove 11 can be perpendicular to the axis of the sealing groove 11. In this case, the gap of the sealing groove of the annular arc structure is opposite The axis of the sealing groove 11, or, as shown in FIG. 1, the connecting line between the two ends of the outer contour line of the first cross section is parallel to the axis of the sealing groove 11, so that the sealing ring 2 can be installed in the sealing groove. At the same time, the contact area between the sealing ring 2 and the body 1 and the pipeline can be maximized, so as to further improve the sealing connection reliability between the sealing ring 2 and the sealing groove 11 .

Based on the above embodiment, when the outer contour of the first cross-section is an arc, the radius of the first cross-section can be made equal to the radius of the second cross-section. Due to the high-strength extrusion deformation state of the sealing ring 2 for a long time, the elastic recovery ability is lost, but the sealing connection effect between the sealing ring 2 and the sealing groove 11 is reduced; at the same time, the radius of the first section is equal to the second section. In the case of the radius, the overall size of the sealing ring 2 is relatively small, and it is easier to be installed into the sealing groove 11 after elastic deformation; and, after the sealing ring 2 is installed in the sealing groove 11, due to the size of the sealing ring Compatible with the sealing groove 11, therefore, the fitting state between the sealing ring 2 and the sealing groove 11 after the elastic deformation is restored is more stable and more suitable, which can further ensure that the sealing groove 11 and the sealing ring 2 have a higher degree of fit. Sealed connection effect.

Preferably, as shown in FIG. 1 , the sealing ring 2 is a solid structure. In this case, both the elastic deformation ability and the recovery elastic deformation ability of the sealing ring 2 are relatively strong, and the sealing ring 2 of this structure is in low temperature. The amount of shrinkage and deformation generated in the environment is also relatively small, which can basically ensure that the sealing ring 2 and the sealing groove 11 maintain a good and reliable sealing connection for a long time. Specifically, the sealing ring 2 is formed of an elastic material by injection molding or the like.

Optionally, the radius of the first section can also be smaller than the radius of the second section. In this case, after the sealing ring 2 is installed in the sealing groove 11, the sealing ring 2 will produce a greater degree of elastic deformation, so that the A better fit effect is formed between the sealing ring 2 and the sealing groove 11 , so as to ensure reliable sealing performance between the sealing ring 2 and the sealing groove 11 . Specifically, the radius of the first section can be made 5%-10% smaller than the radius of the second section, in this case, the sealing ring 2 can be easily installed into the sealing groove 11; and the sealing ring 2 and the sealing groove The sealing performance between 11 is also relatively good. It should be noted that, in this case, the outer contour line of the first cross-section can be an elliptical arc, and the sealing ring 2 can fill the sealing groove 11 by generating a certain elastic deformation, which can also ensure that the sealing ring 2 and the The sealing grooves 11 have a sealing connection relationship that meets the requirements; and, by calculating the relationship between the volume of the sealing ring 2 and the volume of the sealing groove 11, the elasticity of the sealing ring 2 can be ensured by increasing the volume of the sealing ring 2 The sealing relationship between the sealing ring 2 and the sealing groove 11 will not be broken even if the capacity is reduced and/or a certain shrinkage deformation occurs.

Based on the valve provided by any of the above embodiments, the present invention also provides an air conditioner, which includes any of the above valves, and the valve can be installed on the pipeline between the indoor unit and the outdoor unit to connect or cut off the passage of the refrigerant.

In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, It is not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed to indicate or imply relative importance.

In the description of the present invention, it should be noted that the terms "installation", "communication" and "connection" should be understood in a broad sense unless otherwise expressly specified and limited. For example, it may be a fixed connection or a detachable connection. Connection, or integral connection; may be mechanical connection or electrical connection; may be direct communication, or indirect communication through an intermediate medium, and may be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific situations. Also, in the description of the present invention, unless otherwise specified, "plurality" means two or more.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection of the present invention. within the range.

Claims (10)

1. a valve, is characterized in that, comprises: a body (1), the outer surface of the body (1) has a closed annular sealing groove (11); a sealing ring (2), the sealing ring (2) is a closed annular structure; Wherein, the outer contour line of the first cross-section cut by the groove wall of the sealing groove (11) by the plane passing through the axis of the sealing groove (11) is arc-shaped, and the outer surface of the sealing ring (2) is The outer contour of the second section cut by the plane is a circle, and the radius of the first section is smaller than or equal to the radius of the second section. 2. The valve according to claim 1, wherein the sealing ring (2) is made of elastic material. 3 . The valve according to claim 2 , wherein the outer contour of the first section is an arc. 4 . 4 . The valve according to claim 3 , wherein the outer contour of the first cross-section is an arc. 5 . 5. The valve according to claim 4, characterized in that the symmetry plane of the sealing groove (11) itself is perpendicular to the axis of the sealing groove (11). 6. The valve of claim 4, wherein the radius of the first section is equal to the radius of the second section. 7. The valve according to claim 2, wherein the sealing ring (2) is made of hydrogenated nitrile rubber or neoprene. 8. The valve according to claim 1, wherein the sealing ring (2) is a solid structure. 9. The valve of claim 1, wherein the radius of the first cross-section is smaller than the radius of the second cross-section. 10. An air conditioner, characterized by comprising the valve according to any one of claims 1-9.