CN104613192A - Ball valve and air conditioner - Google Patents

Abstract

The present invention provides a ball valve and an air conditioner, the air conditioner includes the ball valve, the ball valve includes: a valve body, the valve body includes an assembly end, and a valve core assembly is arranged in the valve body; and a valve seat, The valve seat includes a sealing end, and the sealing end of the valve seat is connected to the assembly end of the valve body by welding; wherein, the sealing end of the valve seat is provided with a counterbore, and the counterbore is provided in the counterbore There is a sealing ring, and an annular protrusion is provided on the inner edge of the bottom surface of the counterbore, and the annular protrusion is used to keep the sealing ring separated from the bottom surface of the counterbore. The ball valve of the present invention can ensure its own tightness and the tightness of opening and closing at the same time, without the problems of refrigerant leakage or insufficient closure of refrigerant pipes, and improves the quality of the air conditioner.

Description

Ball valve and air conditioner

technical field

The invention relates to the refrigeration field, and more specifically, to a ball valve and an air conditioner with the ball valve.

Background technique

At present, some multi-connected air conditioners with a large number of horses will use ball valves. The valve body of the ball valve is connected to the valve seat after installing the ball core and valve stem. Oxygen glue. As shown in Figures 1 to 3, the valve body and seat of a conventional ball valve are threaded, and the threaded connection provides the required pressure resistance for sealing the valve body and seat, and the anaerobic adhesive sticks to the thread to prevent the thread from loosening. However, the sealing parts of the valve seat and the valve body of this structure require high precision, and the sealing parts are easy to be improperly protected during the production process, and the right-angled edges of the sealing part will be damaged, resulting in sealing failure and refrigerant in the valve body. Leakage; moreover, anaerobic glue is easy to deteriorate when heated, and loses its adhesive effect, which will cause the thread to loosen and cause the refrigerant in the valve body to leak. , The threaded connection between the valve seat and the valve body of the ball valve is unreliable, and the pipelines on both sides of the ball valve are usually subject to greater stress, which makes the ball valve vibrate with the pipeline in the whole machine. When the air conditioner is cooling or heating, the ball valve will be damaged. Shocked by heat and cold, threaded connections can loosen over time. The loose thread of the ball valve will leak refrigerant, which will reduce the refrigerant in the air conditioning system and affect the cooling effect.

Therefore, it is very necessary to propose a ball valve with a stable structure and no hidden danger of refrigerant leakage.

Contents of the invention

The present invention aims to solve at least one of the technical problems existing in the prior art.

Therefore, an object of the present invention is to provide a ball valve with a stable structure and no hidden danger of refrigerant leakage.

Another object of the present invention is to provide an air conditioner, including the above-mentioned ball valve.

In order to achieve the above object, according to the embodiment of the first aspect of the present invention, a ball valve is provided for an air conditioner. The ball valve includes: a valve body, the valve body includes an assembly end, and a valve core assembly is arranged in the valve body; And the valve seat, the valve seat includes a sealing end, and the sealing end of the valve seat is connected to the assembly end of the valve body by welding; wherein, the sealing end of the valve seat is provided with a counterbore, and the sealing end of the valve seat is provided with a counterbore, the A sealing ring is arranged in the counterbore, and an annular protrusion is provided on the inner edge of the bottom surface of the counterbore, and the annular protrusion is used to keep the sealing ring separated from the bottom surface of the counterbore.

According to the ball valve of the embodiment of the present invention, the ball valve includes a valve body and a valve seat, a valve core assembly is arranged in the valve body, the assembly end of the valve body and the sealing end of the valve seat are sealed and connected by welding, and the counterbore of the sealing end of the valve seat A sealing ring is arranged in the middle, and the sealing ring is used to maintain a sliding seal between the sealing end of the valve seat and the valve core assembly, and the inner edge of the bottom surface of the counterbore is provided with an annular protrusion, which keeps the sealing ring close to the valve core Assemblies, and the annular protrusion is also used to keep the sealing ring separated from the bottom surface of the counterbore. The valve body and the valve seat generate a lot of heat when welding, and the large amount of heat makes the temperature of the bottom surface of the counterbore rise sharply, and the bottom surface of the counterbore It is kept separated from the sealing ring, which reduces the contact surface between the sealing ring and the valve seat, and can avoid the sealing performance degradation caused by the sealing ring being deformed or denatured by heat. The ball valve of the present invention adopts the structure of welded and sealed connection between the valve body and the valve seat. In any working environment and working conditions, there will be no refrigerant leakage phenomenon, and the sealing ring in the valve seat will not be damaged by welding. Influenced by the high temperature, the tightness of the ball valve itself and the tightness of the ball valve opening and closing are guaranteed at the same time, which improves the quality of the air conditioner using the ball valve.

In addition, the ball valve provided according to the above-mentioned embodiments of the present invention also has the following additional technical features:

According to an embodiment of the present invention, internal threads are provided on the inner wall of the assembly end of the valve body, external threads are provided on the external wall of the sealing end of the valve seat, and the external threads cooperate with the internal threads, The sealing end of the valve seat is connected with the assembly end of the valve body.

According to the ball valve of the embodiment of the present invention, the inner side wall of the assembly end of the valve body is provided with an internal thread, and the outer side wall of the sealing end of the valve seat is provided with an external thread, and the external thread cooperates with the internal thread so that the sealing end of the valve seat is in contact with the valve seat. In this way, the distance between the valve body and the valve seat can be accurately controlled when the valve body and the valve seat are welded, and the valve body and the valve seat are subject to expansion or contraction during the welding process. The impact is small, which ensures the distance between the valve seat and the valve core assembly in the valve body, thereby ensuring the sealing performance of the ball valve itself, and improving the quality of the ball valve.

According to an embodiment of the present invention, the outer wall of the sealing end of the valve seat is provided with a circumferential annular boss, and the diameter of the top surface of the annular boss is equal to the diameter of the outer wall of the assembly end of the valve body. .

According to an embodiment of the present invention, the annular boss forms a welding gap between the outer thread and the inner thread and the end of the outer side wall of the fitting end of the valve body after the outer thread is tightened.

According to an embodiment of the present invention, one side of the annular boss facing the sealing end is a plane, and the end surface of the fitting end of the valve body is a plane.

According to the ball valve of the embodiment of the present invention, the outer wall of the sealing end of the valve seat is provided with a circumferential annular boss, the diameter of the top surface of the annular boss is equal to the diameter of the outer wall of the assembly end of the valve body, so that the annular boss The upper surface of the upper surface of the valve body is aligned with the outer wall of the assembly end, which provides favorable conditions for the welding between the valve body and the valve seat in the next step; the ring boss is connected to the end of the outer wall of the assembly end of the valve body after the external thread and the internal thread are tightened A welding gap is formed between the ring boss and the end of the outer wall of the assembly end after the external thread and the internal thread are tightened to form a welding gap. The width of the welding gap is consistent, which can avoid the production personnel from repeatedly checking the welding time and welding quality. Adjustment is conducive to the large-scale production and processing of ball valves; the side of the annular boss facing the direction of the sealing end is a plane, and the end face of the assembly end of the valve body is a plane, which can make the metal produced by the welding rod melt during the welding process of the valve body and the valve seat The material quickly fills the gap between the valve body and the valve seat, ensuring the sealing of the welding; the above structure provides favorable conditions for the welding process, shortens the welding time, and ensures the sealing between the valve seat and the valve body after welding Connection quality, thereby ensuring the performance and quality of the ball valve.

According to an embodiment of the present invention, the valve core assembly includes: a ball core, a through hole and a blind hole are arranged on the ball core, and the axis line of the through hole is perpendicular to the axis line of the blind hole and a valve stem, one end of the valve stem is connected to the blind hole, the other end of the valve stem passes through the valve body, and the valve stem is in sliding and sealing fit with the valve body.

According to an embodiment of the present invention, the blind hole is a special-shaped hole, which is used to make the ball core rotate synchronously with the valve stem.

According to the ball valve of the embodiment of the present invention, the valve core assembly includes a ball core and a valve stem, a through hole and a blind hole are arranged on the ball core, one end of the valve stem is connected with the blind hole, the other end of the valve stem passes through the valve body, and the valve The sliding and sealing fit between the stem and the valve body, at the same time, the axis line of the through hole is perpendicular to the axis line of the blind hole, and the blind hole is a special-shaped hole, which can make the ball core rotate synchronously with the valve stem; The rotation position of the ball core is related to the rotation position of the through hole. By rotating the valve stem, the rotation of the ball core can be controlled, and then the opening and closing of the ball valve can be controlled.

According to an embodiment of the present invention, the valve seat includes a first connection end, the first connection end is connected to the refrigerant pipe in the air conditioner, and the valve body includes a second connection end, the second connection end The connecting end is connected with the refrigerant pipe in the air conditioner.

According to an embodiment of the present invention, an air hole is provided on the side wall of the valve body, and a valve core is mounted on the air hole, wherein there is a cavity between the valve core assembly and the refrigerant pipe, the The air hole communicates with the cavity, and the air hole is equipped with a valve core.

According to the ball valve of the embodiment of the present invention, the valve seat includes a first connection end, and the valve body includes a second connection end. In the air conditioner, the first connection end and the second connection end are respectively connected to the refrigerant pipe in the air conditioner, and the control The opening and closing of the ball valve can control the on-off of the refrigerant pipe. On the side wall of the valve body, there is an air hole leading to the cavity between the valve core assembly and the refrigerant pipe. Extract the excess gas in the refrigerant pipe to repair or adjust the air conditioner.

An air conditioner according to an embodiment of the second aspect of the present invention has the ball valve described in any one of the above embodiments.

The air conditioner provided by the embodiment of the second aspect of the present invention has the ball valve provided by any embodiment of the first aspect of the present invention, so the air conditioner has all the beneficial effects of the ball valve provided by any of the above embodiments.

Additional aspects and advantages in accordance with the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Description of drawings

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

Fig. 1 is the sectional structure schematic diagram of existing ball valve;

Fig. 2 is a schematic diagram of an enlarged structure at A in Fig. 1;

Fig. 3 is a top view structural schematic diagram of Fig. 1;

Fig. 4 is a schematic cross-sectional structure diagram of a ball valve according to an embodiment of the present invention;

Fig. 5 is a schematic diagram of the enlarged structure at B in Fig. 4;

FIG. 6 is a schematic top view of the structure of FIG. 4 .

Wherein, the corresponding relationship between the reference numerals and the part names in Fig. 4 to Fig. 6 is:

1 valve body, 2 valve seat, 3 ball core, 4 assembly end, 5 sealing end, 6 sealing ring, 7 annular protrusion, 8 annular boss, 9 welding gap, 10 through hole, 11 valve stem, 12 first connection end, 13 second connection end, 14 refrigerant pipe, 15 air hole, 16 valve core.

Detailed ways

In order to understand the above-mentioned purpose, features and advantages of the present invention more clearly, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways than described here. Therefore, the protection scope of the present invention is not limited by the specific implementation disclosed below. Example limitations.

As shown in Figure 4 and Figure 5, according to the embodiment of the first aspect of the present invention, a ball valve is provided for an air conditioner, the ball valve includes: a valve body 1, the valve body 1 includes an assembly end 4, the valve A valve core assembly is provided in the body 1; and a valve seat 2, the valve seat 2 includes a sealing end 5, and the sealing end 5 of the valve seat 2 is connected to the assembly end 4 of the valve body 1 by welding; Wherein, the sealing end 5 of the valve seat 2 is provided with a counterbore, a sealing ring 6 is provided in the counterbore, and an annular protrusion 7 is provided on the inner edge of the bottom surface of the counterbore, and the annular protrusion 7 is used for Keep the separation between the sealing ring 6 and the bottom surface of the counterbore.

According to the ball valve of the embodiment of the present invention, the ball valve includes a valve body 1 and a valve seat 2, the valve core assembly is arranged in the valve body 1, and the assembly end 4 of the valve body 1 and the sealing end 5 of the valve seat 2 are sealed and connected by welding A sealing ring 6 is provided in the counterbore of the sealing end 5 of the valve seat 2, and the sealing ring 6 is used to maintain a sliding seal between the sealing end 5 of the valve seat 2 and the valve core assembly, and the inner edge of the bottom surface of the counterbore is provided with The annular protrusion 7, the annular protrusion 7 keeps the sealing ring 6 close to the valve core assembly, and the annular protrusion 7 is also used to keep the sealing ring 6 separated from the bottom surface of the counterbore, the valve body 1 and the valve seat 2 are welded When a large amount of heat is generated, the temperature of the bottom surface of the counterbore increases sharply, and the bottom surface of the counterbore is kept separated from the sealing ring 6, which reduces the contact surface between the sealing ring 6 and the valve seat 2, and prevents the sealing ring 6 from being damaged. Thermal deformation or denaturation leads to a decrease in sealing performance. The ball valve of the present invention adopts the structure of welding and sealing connection between the valve body 1 and the valve seat 2, and no refrigerant leakage phenomenon will occur in any working environment and working conditions, and the sealing ring 6 in the valve seat 2 will not Affected by the high temperature generated during welding, the sealing performance of the ball valve itself and the opening and closing of the ball valve are guaranteed at the same time, which improves the quality of the air conditioner using the ball valve.

In addition, the ball valve provided according to the above-mentioned embodiments of the present invention also has the following additional technical features:

As shown in FIG. 4 , according to an embodiment of the present invention, internal threads are provided on the inner wall of the assembly end 4 of the valve body 1 , and external threads are provided on the outer wall of the sealing end 5 of the valve seat 2 , The external thread cooperates with the internal thread so that the sealing end 5 of the valve seat 2 is connected with the fitting end 4 of the valve body 1 .

According to the ball valve of the embodiment of the present invention, the inner side wall of the assembly end 4 of the valve body 1 is provided with an internal thread, and the outer wall of the sealing end 5 of the valve seat 2 is provided with an external thread, and the external thread cooperates with the internal thread to make the valve The sealing end 5 of the seat 2 is connected with the assembly end 4 of the valve body 1, so that when the valve body 1 and the valve seat 2 are welded, the distance between the valve body 1 and the valve seat 2 can be precisely controlled, and the During the welding process, the valve body 1 and valve seat 2 are less affected by expansion or contraction, which ensures the distance between the valve seat 2 and the valve core assembly in the valve body 1, thereby ensuring the tightness of the ball valve's own opening and closing. Improve the quality of the ball valve.

As shown in Figures 4 and 6, according to an embodiment of the present invention, a circumferential annular boss 8 is provided on the outer wall of the sealing end 5 of the valve seat 2, and the top surface of the annular boss 8 is The diameter is equal to the diameter of the outer wall of the assembly end 4 of the valve body 1 .

As shown in Figures 4 to 6, according to an embodiment of the present invention, the annular boss 8 is connected to the end of the outer wall of the assembly end 4 of the valve body 1 after the external thread and the internal thread are tightened. A welding gap is formed between the parts.

According to an embodiment of the present invention, one side of the annular boss 8 facing the sealing end 5 is a plane, and the end surface of the fitting end 4 of the valve body 1 is a plane.

According to the ball valve of the embodiment of the present invention, the outer wall of the sealing end 5 of the valve seat 2 is provided with a circumferential annular boss 8, and the diameter of the top surface of the annular boss 8 is the same as the outer wall of the assembly end 4 of the valve body 1. The diameters of the ring bosses are equal, so that the upper surface of the annular boss 8 is aligned with the outer wall of the assembly end 4, which provides favorable conditions for the welding between the valve body 1 and the valve seat 2 in the next step; After the thread is tightened, a welding gap is formed between the end of the outer wall of the assembly end 4 of the valve body 1, and the welding gap is formed between the annular boss 8 and the end of the outer wall of the assembly end 4 after the external thread and the internal thread are tightened. The width of the gap is consistent, which can prevent the production personnel from making multiple adjustments to the welding time and welding quality, which is conducive to the large-scale production and processing of the ball valve; the side of the annular boss 8 facing the direction of the sealing end 5 is a plane, and the valve body 1 The end face of the assembly end 4 is flat, so that the metal melt produced by the welding rod can quickly fill the gap between the valve body 1 and the valve seat 2 during the welding process of the valve body 1 and the valve seat 2, ensuring the sealing of the welding The above structure provides favorable conditions for the welding process, shortens the welding time, and ensures the quality of the sealed connection between the valve seat 2 and the valve body 1 after welding, thereby ensuring the performance and quality of the ball valve.

As shown in Figure 4, according to an embodiment of the present invention, the valve core assembly includes: a ball core 3, a through hole 10 and a blind hole are arranged on the ball core 3, the axis of the through hole 10 is in line with the The axis of the blind hole is orthogonal; and the valve stem 11, one end of the valve stem 11 is connected with the blind hole, the other end of the valve stem 11 passes through the valve body 1, and the valve stem 11 11 is in sliding and sealing fit with the valve body 1 .

According to an embodiment of the present invention, the blind hole is a special-shaped hole, which is used to make the ball core 3 rotate synchronously with the valve stem 11 .

According to the ball valve of the embodiment of the present invention, the valve core assembly includes a ball core 3 and a valve stem 11, the ball core 3 is provided with a through hole 10 and a blind hole, one end of the valve stem 11 is connected with the blind hole, and the other end of the valve stem 11 Through the valve body 1, the valve stem 11 and the valve body 1 are in a sliding and sealing fit. At the same time, the axis line of the through hole 10 is perpendicular to the axis line of the blind hole, and the blind hole is a special-shaped hole, which can make the ball core 3 It rotates synchronously with the valve stem 11; the opening and closing of the ball valve is associated with the rotational position of the ball core 3, that is, the rotational position of the through hole 10. By rotating the valve stem 11, the rotation of the ball core 3 can be controlled, and then the opening and closing of the ball valve can be controlled.

As shown in Figure 4 and Figure 6, according to an embodiment of the present invention, the valve seat 1 includes a first connection end 12, the first connection end 12 is connected to the refrigerant pipe 14 in the air conditioner, and the The valve body 1 includes a second connection end 13, and the second connection end 13 is connected to a refrigerant pipe 14 in the air conditioner.

According to an embodiment of the present invention, an air hole 15 is provided on the side wall of the valve body 1, and a valve core 16 is mounted on the air hole 15, wherein, there is a valve core assembly and the refrigerant pipe 14 The air hole 15 communicates with the cavity, and the air hole 15 is equipped with a valve core 16 .

According to the ball valve of the embodiment of the present invention, the valve seat includes a first connecting end 12, and the valve body 1 includes a second connecting end 13. In the air conditioner, the first connecting end 12 and the second connecting end 13 are respectively connected to The refrigerant pipe 14 is connected, and the on-off of the refrigerant pipe 14 can be controlled by controlling the opening and closing of the ball valve. The side wall of the valve body 1 is provided with an air hole 15 leading to the cavity between the valve core assembly and the refrigerant pipe 14. On the air hole 15 Equipped with a valve core 16, maintenance personnel can extract excess gas in the refrigerant pipe 14 from the valve core 16 to maintain or adjust the air conditioner.

An air conditioner according to an embodiment of the second aspect of the present invention has the ball valve described in any one of the above embodiments.

The air conditioner provided by the embodiment of the second aspect of the present invention has the ball valve provided by any embodiment of the first aspect of the present invention, so the air conditioner has all the beneficial effects of the ball valve provided by any of the above embodiments.

In the description of this manual, the terms "connection" and "installation" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; It can be connected indirectly through an intermediary. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

In the description of this specification, the description of the term "one embodiment" and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (10)

1. A kind of ball valve, is used for air conditioner, is characterized in that, comprises: a valve body, the valve body includes an assembly end, and a valve core assembly is disposed in the valve body; and A valve seat, the valve seat includes a sealing end, and the sealing end of the valve seat is connected to the assembly end of the valve body by welding; Wherein, the sealing end of the valve seat is provided with a counterbore, and a sealing ring is provided in the counterbore, and an annular protrusion is provided on the inner edge of the bottom surface of the counterbore, and the annular protrusion is used to make the sealing ring maintain separation from the bottom surface of the counterbore. 2. The ball valve according to claim 1, characterized in that, the inner side wall of the assembly end of the valve body is provided with an internal thread, and the outer wall of the sealing end of the valve seat is provided with an external thread, and the external thread and The internal threads cooperate to connect the sealing end of the valve seat with the assembly end of the valve body. 3. The ball valve according to claim 2, wherein a circumferential annular boss is arranged on the outer wall of the sealing end of the valve seat, and the diameter of the top surface of the annular boss is the same as that of the valve body. The diameters of the outside walls of the fitting end are equal. 4. The ball valve according to claim 3, wherein the annular boss forms a welding gap between the external thread and the internal thread and the end of the outer wall of the assembly end of the valve body after being tightened . 5 . The ball valve according to claim 4 , wherein a side of the annular boss facing the sealing end is a plane, and an end surface of the assembly end of the valve body is a plane. 6 . 6. The ball valve according to claim 1, wherein the valve core assembly comprises: a ball core, the ball core is provided with a through hole and a blind hole, the axis of the through hole is perpendicular to the axis of the blind hole; and A valve stem, one end of the valve stem is connected to the blind hole, the other end of the valve stem passes through the valve body, and the valve stem is in sliding and sealing fit with the valve body. 7. The ball valve according to claim 6, wherein the blind hole is a special-shaped hole for synchronously rotating the ball core with the valve stem. 8. The ball valve according to any one of claims 1 to 7, wherein the valve seat includes a first connection end, the first connection end is connected to the refrigerant pipe in the air conditioner, and the The valve body includes a second connection end, and the second connection end is connected with the refrigerant pipe in the air conditioner. 9. The ball valve according to claim 8, wherein an air hole is provided on the side wall of the valve body, and a valve core is mounted on the air hole, wherein, the valve core assembly and the refrigerant pipe There is a cavity between them, the air hole communicates with the cavity, and the air hole is equipped with a valve core. 10. An air conditioner, characterized by comprising the ball valve according to any one of claims 1-9.