WO2022127400A1

WO2022127400A1 - Stop valve, and air conditioning system having same

Info

Publication number: WO2022127400A1
Application number: PCT/CN2021/127460
Authority: WO
Inventors: 楼峰; 寿杰; 冯雄雄; 傅周登
Original assignee: 浙江盾安人工环境股份有限公司
Priority date: 2020-12-15
Filing date: 2021-10-29
Publication date: 2022-06-23
Also published as: CN214305292U; KR20230058143A; JP2023541113A

Abstract

A stop valve (100) and an air conditioning system comprising the stop valve (100). The stop valve (100) comprises a valve body (10) and a valve core (20), wherein the valve body (10) has a first opening (11), a second opening (12) and a valve cavity (13); the valve body (10) is further provided with a filling end (14); and an extension line of a second axis (121) intersects a first axis (111) at a first intersection point (1211), an extension line of a third axis (141) intersects the first axis (111) at a second intersection point (1212), which satisfies the following relational expression: d1 < d2, where d1 is the distance from the first intersection point (1211) to the first opening (11), and d2 is the distance from the second intersection point (1212) to the first opening (11). By means of the stop valve, a fluid flows more smoothly in the valve cavity, and the flow channel turns relatively smoothly, which can effectively reduce the pressure loss.

Description

Globe valve and air conditioning system having the same

Related applications

This application claims the priority of the Chinese patent application filed on December 15, 2020, the application number is 202023018143.5, and the invention title is "stop valve and air conditioning system having the same", the entire contents of which are incorporated into this application by reference.

technical field

The present application relates to the technical field of air conditioning, and in particular, to a shut-off valve and an air conditioning system having the same.

Background technique

In the air conditioning system, it mainly includes components such as compressor, indoor heat exchanger, outdoor heat exchanger, shut-off valve, etc. Among them, the shut-off valve is mainly used to connect the indoor unit and the outdoor unit, and plays the role of controlling the on-off of the refrigerant flow path.

In the existing globe valve, the first opening and the second opening are at an angle of approximately 90 degrees, which means that the fluid needs to be turned greatly during the flow process, and due to the blocking of the valve core, the fluid may generate eddy currents, making the refrigerant Therefore, how to smooth the flow of the fluid and reduce the pressure loss is a technical problem to be solved by those skilled in the art.

SUMMARY OF THE INVENTION

In view of this, in view of the above technical problems, the present application provides a stop valve with smooth fluid flow and small pressure loss.

In order to solve the above-mentioned technical problems, the application provides the following technical solutions:

A globe valve, comprising a valve body and a valve core, the valve body has a first opening, a second opening and a valve cavity, the valve body is also provided with a filling end, and the first opening has a first axis , the second opening has a second axis, the filling end has a third axis, the valve cavity has a valve port, and the valve core is slidably arranged in the valve cavity for opening/closing the valve port; the second axis intersects the first axis at a first intersection, the third axis intersects the first axis at a second intersection, and the first intersection is along the first axis The distance to the first opening is d ₁ , the distances from the second intersection to the first opening along the first axis are d ₂ , d ₁ and d ₂ and satisfy the following relation: d ₁ < d ₂ .

It can be understood that, in the present application, the distance d ₁ from the first intersection to the second opening and the distance d ₂ from the second intersection to the second opening satisfy the condition of d ₁ <d ₂ , so that It makes the fluid flow more smoothly in the valve cavity, and the flow capacity of the fluid is stronger, which makes the turn of the flow channel relatively smooth, which can effectively reduce the pressure loss, and also makes the shut-off valve can be applied to the air conditioning system with a larger number of horses. .

In one embodiment, the inner diameter of the valve port is d ₃ , the inner diameter of the second opening is d ₄ , and d ₃ and d ₄ satisfy the following relation: d ₃ ≦d ₄ .

It can be understood that the flow capacity of the fluid flow channel can be further improved, because the inner diameter of the valve port is smaller than the inner diameter of the second opening, so that the main throttling part of the valve cavity is transferred to the valve port. , when the fluid flows in from the second opening until it reaches the valve port, the overall flow is smoother, and no obvious throttling occurs.

In one embodiment, the shut-off valve further includes a first nozzle and a second nozzle, the first nozzle is fixedly connected to the first opening, and the second nozzle is fixedly connected to the second opening.

It can be understood that, the first connecting pipe and the second connecting pipe are respectively communicated with the valve cavity for the inflow and outflow of the fluid in the valve cavity.

In one embodiment, the valve body further has a first installation hole communicating with the valve cavity, and one end of the valve core extends into the first installation hole and is slidably connected with the valve body, so The end face of the other end of the valve core has a first groove provided with an opening.

It can be understood that, the arrangement of the first groove reduces the mass of the valve core, thereby improving the impact efficiency of the valve core.

In one embodiment, a connecting hole is provided inside the valve core, one end of the connecting hole extends into the first installation hole and is concentric with the valve core, and the connecting hole is an internal thread hole , which is used to cooperate with the valve stem, and the valve stem drives the valve core to move vertically along the center line of the valve body.

It can be understood that when the stop valve is in operation, the valve stem is screwed into the connecting hole, and the valve stem is rotated clockwise, the valve stem and the valve body are closed, and the circulation of the internal medium is cut off. ; Rotate the valve stem counterclockwise, the valve stem and the valve body are opened, and the circulation of the internal medium is opened, which is convenient for the manipulation of the internal medium.

In one embodiment, the outer circumferential surface of the valve core is further provided with a second groove, and the second groove is used for placing a sealing ring.

It can be understood that, during the movement of the valve core, a good sealing performance is always maintained between the valve core and the cavity wall of the valve cavity.

In one of the embodiments, the valve core and the cavity wall of the valve cavity are further provided with a screw thread pair that cooperates with each other, so that the valve core is in the valve cavity along the axial direction of the valve body. internal movement.

It can be understood that, in this way, torque in the valve opening direction can be applied to the valve core, and under the action of the thread pair, the valve core is displaced along the axis direction of the valve body.

In one embodiment, the shut-off valve further includes a valve core, the valve core is installed in the charging end, and is used for charging refrigerant into the valve cavity.

It can be understood that the valve core allows the refrigerant to be charged into the refrigeration system of the split type air conditioner through the valve core and the valve nozzle when the refrigerant needs to be charged.

In one embodiment, the shut-off valve further includes a bonnet, the bonnet is located at an end of the valve body away from the first opening, and covers the first installation hole.

It can be understood that the bonnet plays the role of dustproof and waterproof for the shut-off valve.

The application also provides the following technical solutions:

An air conditioning system includes a shut-off valve.

Compared with the prior art, the shut-off valve provided by the present application satisfies d ₁ by making the distance d ₁ from the first intersection to the second opening and the distance d ₂ from the second intersection to the second opening <d ₂ conditions, so that the fluid flows more smoothly in the valve cavity, and the flow capacity of the fluid is stronger, so that the flow channel turns relatively smoothly, which can effectively reduce the pressure loss, and also makes the globe valve can be applied to Larger air conditioning system.

Description of drawings

FIG. 1 is a schematic structural diagram of a cut-off valve provided by the application from a perspective;

FIG. 2 is a schematic structural diagram of the shut-off valve provided by the present application from another perspective.

The meanings of the symbols in the figure are as follows:

100, globe valve; 10, valve body; 11, first opening; 111, first axis; 112, first nozzle; 12, second opening; 121, second axis; 122, second nozzle; 1211, first Intersection; 1212, the second intersection; 13, valve cavity; 131, valve port; 132, the first installation hole; 14, filling end; 141, the third axis; 142, valve core; 20, valve core; 21, the first a groove; 22, a connecting hole; 23, a second groove; 30, a valve cap; 40, an installation part; 41, a second installation hole.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

It should be noted that when a component is referred to as being "mounted on" another component, it can be directly on the other component or there may also be an intervening component. When a component is considered to be "set on" another component, it may be directly set on the other component or there may be a co-existing centered component. When a component is said to be "fixed" to another component, it may be directly fixed to the other component or there may also be an intervening component.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs. The terms used herein in the specification of the application are for the purpose of describing specific embodiments only, and are not intended to limit the application. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.

Please refer to FIG. 1 to FIG. 2, the present application provides a shut-off valve 100, the shut-off valve 100 is arranged on the refrigerant circuit between the indoor unit and the outdoor unit of the air conditioning system, and is used to open or close the refrigerant circuit. Used for vacuuming or charging refrigerant during air conditioning maintenance. Of course, in other embodiments, the shut-off valve 100 can also be applied in fields other than air conditioning systems, such as fluid pipeline transportation, petrochemical industry, and aerospace fields.

Specifically, the globe valve 100 includes a valve body 10 and a valve core 20 , the valve body 10 has a first opening 11 , a second opening 12 and a valve cavity 13 , the valve body 10 is further provided with a filling end 14 , and the first opening 11 It has a first axis 111, the second opening 12 has a second axis 121, the filling end 14 has a third axis 141, the valve cavity 13 has a valve port 131, and the valve core 20 is slidably arranged in the valve cavity 13 for opening. / Close valve port 131; the second axis 121 and the first axis 111 intersect at the first intersection 1211, the third axis 141 and the first axis 111 intersect at the second intersection 1212, and the first intersection 1211 along the first axis 111 to the first The distance of an opening 11 is d ₁ , the distance from the second intersection 1212 to the first opening 11 along the first axis 111 is d ₂ , and d ₁ and d ₂ satisfy the following relation: d ₁ <d ₂ .

It should be noted that, in the existing globe valve 100 , the first opening 11 and the second opening 12 are at an included angle of approximately 90 degrees, which means that the fluid needs to be greatly turned during the flow process, and due to the blocking of the valve core 20 , the fluid may generate eddy currents, which will increase the pressure loss of the refrigerant and increase the energy consumption. In this embodiment, the distance d 1 from the first intersection 1211 to the second opening 12 and the distance d ₂ from the second intersection 1212 to the _second opening 12 satisfy the condition of d ₁ <d ₂ , so that the fluid in the valve cavity is 13, the flow is smoother, and the fluid flow capacity is stronger, so that the flow channel turns relatively smoothly, which can effectively reduce the pressure loss, and also makes the stop valve 100 applicable to the air conditioning system with a larger number of horses.

As shown in FIG. 1 and FIG. 2 , the valve body 10 is a main component of the globe valve 100 . Different pressure levels have different mechanical manufacturing methods. In this embodiment, the valve body 10 is produced by a casting process. , in other embodiments, the valve body 10 may also be produced by forging or other processes.

Specifically, the valve body 10 is made of metal, which is suitable for medium and low pressure and normal temperature conditions in water treatment, light industry, petroleum, chemical and other industries, and has good sealing performance.

Optionally, in this embodiment, the valve body 10 is integrally formed with the first opening 11 and the second opening 12; of course, in other embodiments, the valve body 10 can also be connected by welding, which is not limited here.

As shown in FIG. 1 , the first axis 111 and the second axis 121 form an included angle α, and the included angle α satisfies the relationship: 105°≤α≤135°; that is, the second axis 121 is relative to the first axis 121 The axis 111 is inclined; compared with the existing globe valve 100 with the first axis 111 and the second axis 121 at right angles, the height of the valve body 10 can be reduced; and when the fluid flows from the second opening 12 into the valve cavity During the whole process of 13, the turning of the flow channel is relatively gentle, which can effectively reduce the pressure loss. If the angle of the included angle α is greater than 135°, the distance between the second opening 12 and the valve body 10 will be too small, and the processing difficulty will increase. The height of the intersection of the second opening 12 and the valve cavity 13 will also increase accordingly, so that the overall height of the valve body 10 is bound to increase, and the material cost will also increase accordingly. If the angle of the included angle α is less than 105°, the improvement effect on the fluid flow path will be reduced again.

Further, the inner diameter of the valve port 131 is d ₃ , the inner diameter of the second opening 12 is d ₄ , and d ₃ and d ₄ satisfy the following relationship: d ₃ ≤ d ₄ ; in this way, the flow capacity of the fluid flow channel can be further improved, because The inner diameter of the valve port 131 is smaller than the inner diameter of the second opening 12, so that the main throttling part of the valve cavity 13 is transferred to the valve port 131. When the fluid flows from the second opening 12 until it reaches the valve port 131, the overall flow It's smoother and doesn't produce significant throttling.

Further, the stop valve 100 further includes a first connecting pipe 112 and a second connecting pipe 122, the first connecting pipe 112 is fixedly connected with the first opening 11, and the second connecting pipe 122 is fixedly connected with the second opening 12, so that the first connecting pipe 112 and the The second pipes 122 are respectively communicated with the valve cavity 13 , and are used for the inflow and outflow of the fluid in the valve cavity 13 .

Optionally, in this embodiment, the first connecting pipe 112 and the second connecting pipe 122 are both welded and fixed to the valve body 10 by brazing; of course, in other embodiments, other fixing methods can also be used, which are not described here. limited.

Further, the valve body 10 also has a first installation hole 132 in communication with the valve cavity 13 , one end of the valve core 20 extends into the first installation hole 132 and is slidably connected with the valve body 10 , and the end face of the other end of the valve core 20 is The first groove 21 is provided with an opening, and the arrangement of the first groove 21 reduces the mass of the valve core 20 , thereby improving the impact efficiency of the valve core 20 .

Optionally, in this embodiment, the valve core 20 is made of a rectangular material that is machined brass or aluminum; of course, in other embodiments, the valve core 20 may also be made of other materials, which is not limited herein.

Further, the valve core 20 is provided with a connecting hole 22, one end of the connecting hole 22 extends into the first mounting hole 132 and is concentric with the valve core 20, and the connecting hole 22 is an internal thread hole for connecting with the valve stem (Fig. (not shown) is matched and connected, and the valve stem drives the valve core 20 to move vertically along the center line of the valve body 10. When the stop valve 100 works, the valve stem is screwed into the connecting hole 22, and the valve stem is rotated clockwise. The body 10 is closed to cut off the circulation of the internal medium; the valve stem is turned counterclockwise, the valve stem and the valve body 10 are opened, and the circulation of the internal medium is opened, which facilitates the manipulation of the internal medium.

Further, the outer circumferential surface of the valve core 20 is also provided with a second groove 23, and the second groove 23 is used for placing a sealing ring, so that the valve core 20 is always in contact with the cavity wall of the valve cavity 13 during the movement process. maintain good sealing performance. At the same time, the cavity walls of the valve core 20 and the valve cavity 13 are also provided with screw pairs (not shown) that cooperate with each other, so that the valve core 20 moves in the valve cavity 13 along the axial direction of the valve body 10, so that the A torque in the valve opening direction is applied to the valve body 20 , and the valve body 20 is displaced along the axial direction of the valve body 10 by the action of the screw pair.

Further, the shut-off valve 100 further includes a valve core 142, and the valve core 142 is installed in the charging end 14 and used to charge the valve cavity 13 with refrigerant, so that when the refrigerant needs to be charged, the refrigerant can pass through the valve core 142 and the valve are charged into the refrigeration system of the split type air conditioner.

In this embodiment, the third axis 141 of the filling end 14 is perpendicular to the second axis 121 of the valve cavity 13 ; of course, in other embodiments, the third axis 141 can also be set to be perpendicular to the first axis 111 An acute included angle that is the same or close to the second axis 121 .

Further, the globe valve 100 further includes a bonnet 30 , the bonnet 30 is located at the end of the valve body 10 away from the first opening 11 and covers the first installation hole 132 , and the bonnet 30 is dust-proof and waterproof for the globe valve 100 . effect.

As shown in FIG. 2 , a pair of mounting portions 40 are also mounted on the outer surface of the valve body 10 . The mounting portions 40 are a pair of flat flanges with a certain thickness and extend in a direction away from the outer peripheral surface of the valve body 10 . A second mounting hole 41 is respectively provided on the upper portion of the valve for mounting the shut-off valve 100 into the air conditioning system.

The present application also provides an air conditioning system (not shown in the figure), which includes a shut-off valve 100 .

The air conditioning system also has the advantages of the shut-off valve 100 described above.

When designing the size of the globe valve 100 , the distance d1 from the first intersection 1211 to the second opening 12 and the distance d2 from the second intersection 1212 to the second opening 12 satisfy the condition of d1<d2, so that the fluid in the valve cavity 13 The flow in the middle is smoother, and the flow capacity of the fluid is stronger, so that the turning of the flow channel is relatively smooth, which can effectively reduce the pressure loss, and also enables the shut-off valve 100 to be applied to an air conditioning system with a larger number of horses.

The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity, all possible combinations of the technical features in the above-described embodiments are not described. However, as long as there is no contradiction between the combinations of these technical features, All should be regarded as the scope described in this specification.

The above-mentioned embodiments only represent several embodiments of the present application, and the descriptions thereof are relatively specific and detailed, but should not be construed as a limitation on the scope of the utility model patent. It should be pointed out that for those skilled in the art, without departing from the concept of the present application, several modifications and improvements can be made, which all belong to the protection scope of the present application. Therefore, the scope of protection of the patent of the present application shall be subject to the appended claims.

Claims

A globe valve, comprising a valve body and a valve core, the valve body has a first opening, a second opening and a valve cavity, the valve body is also provided with a filling end, and the first opening has a first axis , the second opening has a second axis, the filling end has a third axis, the valve cavity has a valve port, and the valve core is slidably arranged in the valve cavity for opening/closing the valve port;

It is characterized in that, the second axis intersects the first axis at a first intersection, the third axis intersects the first axis at a second intersection, and the first intersection is along the first axis The distance to the first opening is d 1 , the distances from the second intersection to the first opening along the first axis are d 2 , d 1 and d 2 and satisfy the following relation:

d 1 <d 2 .
The globe valve according to claim 1, wherein the inner diameter of the valve port is d 3 , the inner diameter of the second opening is d 4 , and d 3 and d 4 satisfy the following relationship:

d 3 ≤d 4 .
The shut-off valve according to claim 2, wherein the shut-off valve further comprises a first pipe and a second pipe, the first pipe is fixedly connected with the first opening, and the second pipe is connected with the second pipe Open fixed connection.
The globe valve according to claim 1, wherein the valve body further has a first installation hole communicating with the valve cavity, and one end of the valve core extends into the first installation hole and is connected to the valve body. The valve core is slidably connected, and the end face of the other end of the valve core has a first groove with an opening.
The globe valve according to claim 4, wherein a connecting hole is provided inside the valve core, and one end of the connecting hole extends into the first installation hole and is concentric and coaxial with the valve core. The hole is an inner threaded hole, which is used for cooperating with a valve stem, and the valve stem drives the valve core to move vertically along the center line of the valve body.
The globe valve according to claim 1, wherein a second groove is further provided on the outer circumferential surface of the valve core, and a sealing ring is placed in the second groove.
The shut-off valve according to claim 1, wherein the valve core and the cavity wall of the valve cavity are further provided with thread pairs that cooperate with each other, so that the valve core is along the axial direction of the valve body. move in the valve cavity.
The shut-off valve according to claim 1, wherein the shut-off valve further comprises a valve core, the valve core is installed in the charging end, and is used for charging refrigerant into the valve cavity.
The shut-off valve according to claim 4, wherein the shut-off valve further comprises a bonnet, the bonnet is located at an end of the valve body away from the first opening, and covers the first installation hole.
An air conditioning system, characterized in that it comprises the shut-off valve according to any one of claims 1-9.