WO2023280261A1

WO2023280261A1 - Three-way pipe and air conditioning system using three-way pipe

Info

Publication number: WO2023280261A1
Application number: PCT/CN2022/104309
Authority: WO
Inventors: 李书求; 王文杰
Original assignee: 浙江盾安人工环境股份有限公司
Priority date: 2021-07-07
Filing date: 2022-07-07
Publication date: 2023-01-12
Also published as: KR20240025015A; CN215981360U

Abstract

A three-way pipe (100) and an air conditioning system (200) that uses said three-way pipe. The three-way pipe comprises a three-way body (10) and a connecting piece (20), wherein the three-way body is connected to an external pipe by means of the connecting piece, the three-way body is a stainless steel three-way body, and the connecting piece is a copper pipe or an aluminum pipe. The three-way pipe uses a stainless steel three-way body, allowing the strength of the three-way pipe to be increased, production costs are reduced, and the service life of the three-way pipe can be prolonged.

Description

Tee pipe and air conditioning system using the same

related application

This application claims the priority of the Chinese patent application filed on July 7, 2021 with the application number 202121540428.7 and the title of the invention is "Te-way pipe and air-conditioning system using the same", the entire contents of which are incorporated herein by reference Applying.

technical field

The present application relates to the technical field of air conditioning, in particular to a three-way pipe and an air-conditioning system using the three-way pipe.

Background technique

In the field of air conditioning, tee pipes are widely used. The heat exchange tubes of general air conditioners mostly use copper tee pipes, but the strength of copper tee pipes is low. Due to the limitation of processing technology, there will be stress concentration at the corners where the cross-sectional shape of copper tee pipes changes sharply, and this The wall thickness will be thinned, making the copper tee pipe easily damaged under the impact of fluid.

The tee pipes in some large-scale air-conditioning equipment involve the connection of pipe fittings of two different materials, but the welding of dissimilar metals is generally more complicated, which makes the production cost higher.

Contents of the invention

According to various embodiments of the present application, a tee pipe and an air conditioning system using the tee pipe are provided.

A tee pipe includes a tee body and a connecting piece. The tee body is connected to the external pipeline through the connecting piece; the tee body is a stainless steel tee, and the connecting piece is a copper pipe or an aluminum pipe.

In one of the embodiments, one end of the connecting piece connected to the tee body is provided with a positioning portion matching the tee body in the radial direction, and the other end is connected to an external pipeline, and the positioning portion is used for To limit the connection length between the connecting piece and the tee body.

In one of the embodiments, the connecting piece is plugged into the tee body, and the positioning part is a necking section formed by shrinking the connecting piece in the radial direction; or, the connecting piece is sleeved on the The three-way body, and the positioning part is a flared section formed by radially expanding the connecting piece.

In one of the embodiments, the tee body includes a first interface, a second interface, and a third interface, and the second interface and the third interface are coaxially arranged; the connector includes a first connector, The second connecting piece and the third connecting piece, the first interface, the second interface and the third interface are respectively connected to the first connecting piece, the second connecting piece and the third connecting piece.

In one embodiment, the wall thickness t1 of the first interface, the wall thickness t2 of the second interface, and the wall thickness t3 of the third interface satisfy the following relationship: t1<t2, and t2=t3.

In one embodiment, the inner diameter D1 of the first interface, the inner diameter D2 of the second interface, and the inner diameter D3 of the third interface satisfy the following relationship: D1≤D2, and D2=D3.

In one of the embodiments, the connection between the first interface and the second interface and/or the connection between the first interface and the third interface is provided with a connection part, and the connection part is The connection part of the fillet transition.

In one of the embodiments, the first interface and the first connecting piece are connected by welding; and/or, the second interface and the second connecting piece are connected by welding; and/or, the first The three interfaces are connected to the third connecting piece by welding.

In one of the embodiments, the inner diameter of the first connector is greater than or equal to the inner diameter of the first interface; and/or, the inner diameter of the second connector is greater than or equal to the inner diameter of the second interface; and /or, the inner diameter of the third connecting piece is greater than or equal to the inner diameter of the third interface.

The present application also provides an air-conditioning system, the air-conditioning system comprising the tee pipe described in any one of the above.

The details of one or more embodiments of the application are set forth in the accompanying drawings and the description below. Other features, objects and advantages of the present application will be apparent from the description, drawings and claims.

Description of drawings

In order to better describe and illustrate embodiments and/or examples of the inventions disclosed herein, reference may be made to one or more of the accompanying drawings. Additional details or examples used to describe the drawings should not be considered limitations on the scope of any of the disclosed inventions, the presently described embodiments and/or examples, and the best mode of these inventions currently understood.

Fig. 1 is a schematic structural diagram of a tee pipe according to one or more embodiments of the present application.

Fig. 2 is a structural schematic diagram of the tee body in the tee pipe shown in Fig. 1 .

Fig. 3 is a schematic structural diagram of a tee pipe according to one or more embodiments.

Fig. 4 is a partially enlarged schematic diagram at A of the tee pipe shown in Fig. 3 .

FIG. 5 is a schematic diagram of a tee pipe and an air conditioning system including the tee pipe according to one or more embodiments.

Component designation description

100. Tee pipe; 10. Tee body; 11. First interface; 12. Second interface; 13. Third interface; 14. Connecting part; 20. Connecting piece; 21. First connecting piece; 22. The second Two connectors; 23, third connectors; 24, positioning part; 20a, connectors; 21a, first connectors; 22a, second connectors; 23a, third connectors; 24a, positioning part; 200, air conditioner system.

The above description of the symbols of the main components will further describe the present application in detail in combination with the accompanying drawings and specific embodiments.

detailed description

In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be understood that the specific implementation manners described here are only used to explain the present application, and do not limit the protection scope of the present application.

It should be noted that when a component is said to be "mounted on" another component, it can be directly on the other component or there can also be an intervening component. When a component is said to be "set on" another component, it may be set directly on the other component or there may be an intervening component at the same time. When a component is said to be "fixed" to another component, it may be directly fixed to the other component or there may be an intervening component at the same time. The terms "vertical," "horizontal," "left," "right," and similar expressions are used herein for purposes of illustration only and are not intended to represent the only embodiments.

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 terminology used herein in the description of the application is only for the purpose of describing specific embodiments, and is 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 and FIG. 2 , FIG. 1 is a schematic structural diagram of the tee pipe 100 provided by the present application, and FIG. 2 is a schematic structural diagram of the tee body 10 shown in FIG. 1 .

The present application provides a tee pipe 100, which is mainly used for connecting with external pipelines, and is widely used in the field of refrigeration, and is an extremely important part. It can be understood that the tee pipe 100 can also be used in other pipelines.

The tee pipe 100 includes a tee body 10 and a connecting piece 20 . The tee body 10 is connected to the external pipeline through the connecting piece 20 . The tee body 10 is used to communicate with an external pipeline, for example, a heat exchange pipeline in an air-conditioning system. The connecting piece 20 is used to connect the interface of the tee body 10 to an external pipeline.

The tee body 10 is a stainless steel tee with greater strength, and the cost of the stainless steel tee is lower than that of the copper tee. At the same time, the connector 20 is a copper tube or an aluminum tube, which can facilitate the connection with the external pipeline, especially the copper tube, aluminum tube or other pipelines in the air conditioning system, effectively reducing the direct contact between the stainless steel tee and the external pipeline. The difficulty of connection especially reduces the difficulty of repairing the tee pipe inside the air conditioner after the tee pipe is damaged.

In one embodiment, the cross-section of the tee body 10 is substantially "T"-shaped. The three-way body 10 is mainly used for connecting external pipelines and changing the direction of fluid. The tee body 10 includes a first interface 11 , a second interface 12 and a third interface 13 for connecting with the connector 20 . The first interface 11 , the second interface 12 and the third interface 13 are all hollow structures, and the second interface 12 and the third interface 13 are coaxially arranged.

It can be understood that in other embodiments, the three-way body 10 may be of other structures, such as the three-way body 10 with a “Y”-shaped cross section, as long as the three interfaces can communicate with each other. In addition, the second interface 12 and the third interface 13 can also be arranged on different axes, as long as they can meet the requirements of the processing technology and facilitate the flow of fluid.

Further, the first interface 11 is arranged on the pipe section between the second interface 12 and the third interface 13 . And the pipe section between the second interface 12 and the third interface 13 extends radially to form the first interface 11 through the flanging process. According to the deformation characteristics of the flanging process, in order to avoid the material thickness of the first interface 11 being too small and hidden cracks, the length of the outward protrusion should be controlled within a certain range, so that the connection with the first connecting member 21 is convenient. should.

In one of the embodiments, considering the overall mechanical properties of the tee body 10, the tee body 10 can The wall thicknesses are equal. Specifically, the wall thickness t1 of the first interface 11, the wall thickness t2 of the second interface 12, and the wall thickness t3 of the third interface 13 need to satisfy the relationship: t1<t2, and t2=t3; meanwhile, since the first interface 11 The inner diameter of the first interface 11 should not be too large due to the limitation of the setting position, structure and flanging process. Specifically, the inner diameter D1 of the first interface 11 , the inner diameter D2 of the second interface 12 and the inner diameter D3 of the third interface 13 need to satisfy the relationship: D1≦D2, and D2=D3. Such setting can not only effectively avoid the phenomenon of too small wall thickness or even cracking when processing the first interface 11 , improve the product quality of the tee body 10 , but also effectively avoid the current limiting phenomenon when the tee pipe 100 is used.

In one embodiment, the tee body 10 further includes a connecting portion 14 disposed between the first port 11 and the second port 12; and/or, a connecting portion 14 between the first port 11 and the third port 13 . The connecting portion 14 adopts relatively large fillet transition and uniform wall thickness, and the connecting portion 14 is used for smooth transition between the first interface 11 and the second interface 12; and/or, the connecting portion 14 is used for connecting the first interface 11 and the second interface 12 There is a smooth transition between the third interfaces 13 . In this way, the overall structure of the three-way pipe 100 does not have a sharp change in shape, which effectively reduces the stress concentration of the connecting part 14, so that when the three-way pipe 100 changes the direction of the fluid, the connecting part 14 will not be easily affected by the impact of the fluid. Therefore, the three-way pipe 100 needs to be replaced in advance, and the three-way pipe 100 is also easier to process.

The connecting piece 20 includes a first connecting piece 21 , a second connecting piece 22 and a third connecting piece 23 for connecting the tee body 10 with an external pipeline. The first connecting piece 21, the second connecting piece 22 and the third connecting piece 23 are all hollow structures, and the first connecting piece 21 is connected to the first interface 11, the second connecting piece 22 is connected to the second interface 12 and the third connecting piece The component 23 is connected with the third interface 13 . In addition, the cross-sectional shape of the connecting piece 20 should be approximately the same as that of the interface of the tee body 10, so as to reduce the connection between the first interface 11 and the first connecting piece 21 and the connection between the second interface 12 and the second connecting piece 22. connection and the difficulty of connecting the third interface 13 to the third connecting member 23 .

In one of the embodiments, the inner diameter of the first connecting part 21 is greater than or equal to the inner diameter of the first interface 11 on the tee body 10; The inner diameter of the second interface 12 ; and/or, the inner diameter of the third connecting member 23 is greater than or equal to the inner diameter of the third interface 13 on the tee body 10 . Such setting makes the liquid flowing through the three-way pipe 100 not be restricted.

Please refer to FIG. 3 and FIG. 4. FIG. 3 is a schematic structural diagram of the tee pipe in another embodiment of the present application, and FIG. 4 is a partially enlarged schematic diagram of the tee pipe shown in FIG. 3 at point A.

Another embodiment of the tee pipe 100 is substantially the same in structure as the tee pipe 100 in the above-mentioned embodiment, and the main improvement is that: one end of the connecting piece 20a connected to the tee body 10 is provided with a radial direction matching with the tee body 10. The other end of the positioning part 24a is connected to the external pipeline, for example, the other end of the positioning part 24a is connected to the original copper pipe, aluminum pipe or other pipelines in the air conditioning system.

Further, the connecting piece 20a is plugged into the tee body 10, and the positioning portion 24a is a shrinkage section formed by shrinking the connecting piece 20a in the radial direction, and the outer end surfaces of the first interface 11, the second interface 12 and the third interface 13 Respectively contact with the stepped surface on the necking section of the first connecting piece 21a, the second connecting piece 22a and the third connecting piece 23a; or, the connecting piece 20a is sleeved on the tee body 10, and the positioning part 24a is the connecting piece 20a In the radially expanded and formed flaring section, the outer end surfaces of the first interface 11, the second interface 12, and the third interface 13 are respectively flared with the first connecting piece 21a, the second connecting piece 22a, and the third connecting piece 23a. Step surface contact on the segment. The main function of the positioning part 24a is to locate so that the connecting piece 20a is connected to the tee body 10, and to limit the connection length of the connecting piece 20a and the tee body 10; if the length is small, the tee body 10 after the connection cannot be effectively guaranteed If the length is too large, the material of the connecting piece 20a will be wasted, which is not conducive to reducing production costs; therefore, reasonable control of the depth can better ensure that the connecting piece 20a and the tee The connection strength and airtightness of the interface of the body 10 and the production cost of the tee pipe 100 are reduced.

It can be understood that, in this embodiment, the positioning portion 24a is a necking section or a flaring section of the connecting piece 20a; in other embodiments, the positioning portion 24a can also be a concave ring or a convex ring arranged radially on the connecting piece 20a , as long as the positioning and limitation of the connection length between the connecting piece 20a and the tee body 10 can be realized.

In one of the embodiments, in order to ensure the firmness and airtightness of the connection between the connecting piece and the interface on the tee body 10, the first interface 11 and the first connecting piece 21a are connected by welding, and the second interface 12 and the second connecting piece are connected by welding. 22a is connected by welding and the third interface 13 is connected with the third connecting piece 23a by welding. In addition, the gaps between the positioning portion 24a and the joints on the tee body 10 should be set reasonably so as to better meet welding requirements and ensure welding quality.

It can be understood that in other embodiments, the connecting piece 20a can also be connected to the interface on the tee body 10 through flanges, threads, etc., as long as the firmness and airtightness of the connection can be achieved. The connection between the first connecting part 21a and the first interface 11, the second connecting part 22a and the second interface 12, and the connection between the third connecting part 23a and the third interface 13 of the present application can adopt different connection methods, mainly depending on the working environment and Use requirements to determine.

The tee pipe provided in an embodiment of the present application uses a stainless steel tee body instead of a copper tee pipe, so that the strength of the tee pipe is increased and the production cost is reduced, thereby prolonging the service life of the tee pipe. In addition, the application uses the connecting piece to connect the tee body with the external pipeline, and the connecting piece is a copper tube or an aluminum tube, which not only facilitates the connection with the external pipeline, but also further reduces the Cost of production.

The present application also provides an air-conditioning system 200 (see FIG. 5 ) using the above-mentioned three-way pipe 100 . The air-conditioning system 200 has better overall performance and lower production costs, and has broad application prospects.

The technical features of the above-mentioned embodiments can be combined arbitrarily. To make the description concise, all possible combinations of the technical features in the above-mentioned embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, should be considered as within the scope of this specification.

The above-mentioned embodiments only express several implementation modes of the present application, and the description thereof is relatively specific and detailed, but it should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the scope of protection of the patent application should be based on the appended claims.

Claims

A tee pipe, comprising a tee body and a connector, characterized in that the tee body is connected to an external pipeline through the connector; the tee body is a stainless steel tee, and the connector is Copper or aluminum tubes.
The tee pipe according to claim 1, wherein, one end of the connecting piece connected to the tee body is provided with a positioning portion matching with the tee body in the radial direction, and the other end of the connecting piece is connected to the tee body. The external pipeline is connected, and the positioning part (24) is used to limit the connection length between the connecting piece and the tee body.
The tee pipe according to claim 2, wherein the connecting piece is inserted into the tee body, and the positioning portion is a necking section formed by shrinking the connecting piece in the radial direction; or, the The connecting piece is sleeved on the tee body, and the positioning portion is a flared section formed by radially expanding the connecting piece.
The tee pipe according to claim 1, wherein the tee body includes a first interface, a second interface and a third interface, and the second interface is coaxially arranged with the third interface; The connector includes a first connector, a second connector and a third connector, and the first interface, the second interface and the third interface are connected to the first connector and the second connector respectively. And the third connecting piece is connected.
The tee pipe according to claim 4, wherein the wall thickness t1 of the first interface, the wall thickness t2 of the second interface, and the wall thickness t3 of the third interface satisfy the following relationship:

t1<t2, and t2=t3.
The tee pipe according to claim 4, wherein, the inner diameter D1 of the first interface, the inner diameter D2 of the second interface, and the inner diameter D3 of the third interface satisfy the following relationship:

D1≦D2, and D2=D3.
The tee pipe according to claim 4, wherein, the connection between the first interface and the second interface and/or the connection between the first interface and the third interface is provided with The connection part, the connection part is a connection part with a round corner transition.
The tee pipe according to claim 4, wherein, the first interface and the first connecting piece are connected by welding; and/or,

The second interface is connected to the second connector by welding; and/or,

The third interface is connected to the third connecting piece by welding.
The tee pipe according to claim 4, wherein the inner diameter of the first connecting piece is greater than or equal to the inner diameter of the first interface; and/or,

The inner diameter of the second connector is greater than or equal to the inner diameter of the second interface; and/or,

The inner diameter of the third connecting piece is greater than or equal to the inner diameter of the third interface.
An air conditioning system, characterized in that the air conditioning system comprises the tee pipe according to any one of claims 1-9.