WO2023061367A1 - Pipe sleeve, pipeline device, and air conditioner having pipeline device - Google Patents

Abstract

A pipe sleeve, a pipeline device, and an air conditioner having the pipeline device. The pipeline device comprises a first pipeline component, an annular groove having one end open and the other end closed being formed at an end of the first pipeline component; and a second pipeline component, the second pipeline component being welded and fixed to the first pipeline component, and a welding area being axially corresponding to the annular groove. In the pipeline device, the provision of the annular groove allows excess welding flux in the welding area to drop into the annular groove, such that welding flux is prevented from dripping onto parts inside the first pipeline component, thereby ensuring the cleanliness of the inside of the pipeline device, and preventing excess welding flux from entering a system pipeline to form welding bumps and causing damage to the system.

Description

Pipe sleeve, piping device and air conditioner with piping device

Cross References to Related Applications

This disclosure claims the priority and rights of the Chinese patent application with the application number 202122471567.5 and the application date on October 13, 2021 and the Chinese patent application with the application number 202123456008.3 and the application date on December 31, 2021. The above-mentioned Chinese patent application The entire contents of are hereby incorporated by reference into this disclosure.

technical field

The present disclosure relates to the technical field of pipeline connection, in particular to a pipe sleeve, a pipeline device and an air conditioner with the pipeline device.

Background technique

Steel pipelines have low thermal conductivity and a higher thermal insulation coefficient than copper pipelines, which can improve the energy efficiency of air-conditioning systems when used in air-conditioning systems. In order to ensure the feasibility and convenience of on-site welding, copper sleeves are generally added to the steel pipe joints, but when the steel pipes are connected to the copper sleeves, the flame brazing solder does not stick to the steel pipes. , although a copper sleeve is added to the joint of the steel pipeline, but due to the low thermal conductivity of the steel pipeline, the heat dissipation effect is slower than that of the copper pipeline, and the temperature at the junction of the copper sleeve and the steel pipeline is higher during welding, and solder may Surplus, the excess solder is not easy to solidify, the permeable position is too long, and it is difficult to attach to the inner wall of the steel pipe, and the excess solder will flow to the upper end of the steel pipe and form a weld bump (the difference between the melting point of the steel pipe and the solder is too large, the steel pipe does not sticky solder). The welding lump is suspended on the steel pipe, and under the repeated washing of the refrigerant, it will fall into the pipeline after a long time, causing noise or damage to other parts of the air conditioner. It is easy to flow into the system along the pipe wall of the steel pipeline and cause damage to the system.

Contents of the invention

The present disclosure is made based on the inventors' discovery and recognition of the following facts and problems:

In the related art, excess solder may flow to the steel pipe and form weld flash. The welding lump is suspended on the steel pipe, and under the repeated washing of the refrigerant, it will fall into the pipeline after a long time, causing noise or damage to other parts of the air conditioner. It is easy to flow into the system along the pipe wall of the steel pipeline and cause damage to the system.

To this end, at least one embodiment of the present disclosure provides a pipeline device.

A line set according to at least one embodiment of the present disclosure includes

a first pipeline component, the end of the first pipeline component is formed with an annular groove with one end open and the other end closed;

The second pipeline component is welded and fixed to the first pipeline component and the welding area corresponds axially to the annular groove.

The piping device according to at least one embodiment of the present disclosure can make the excess solder in the welding area drip into the annular groove by setting the annular groove, so as to prevent the solder from dripping onto the components inside the first piping assembly, It can ensure that the interior of the pipeline device is relatively clean. At the same time, it can also prevent excess solder from entering the system pipeline to form welding bumps and causing damage to the system.

In some embodiments, the second pipeline component is welded and fixed to the outer peripheral wall and/or the inner peripheral wall of the annular groove.

In some embodiments, a portion of the second tubing assembly is inserted into the annular groove.

In some embodiments, an end face of the second pipeline component inserted into the annular groove is spaced apart from a closed end of the annular groove.

In some embodiments, the part of the second pipeline component inserted into the annular groove is clearance-fitted with the annular groove.

In some embodiments, the second pipeline component is welded to the outer peripheral wall and spaced apart from the inner peripheral wall.

In some embodiments, the first pipeline assembly includes: a first pipeline, an outer connecting sleeve and an inner connecting sleeve, the inner connecting sleeve is attached to the inner wall of the first pipeline, and the outer connecting sleeve The sleeve is attached to the outer wall surface of the first pipeline, and the first pipeline, the outer connecting sleeve and the inner connecting sleeve jointly define the annular groove;

Wherein the outer connecting sleeve constitutes the outer peripheral wall, and the inner connecting sleeve constitutes the inner peripheral wall.

In some embodiments, the first pipeline and the outer connecting sleeve and the first pipeline and the inner connecting sleeve are fixed by welding.

In some embodiments, the length of the outer connecting sleeve protruding from the end surface of the first pipeline is greater than the length of the inner connecting sleeve protruding from the end surface of the first pipeline, and the second pipeline assembly It is welded and fixed with the outer connecting sleeve.

In some embodiments, the fitting and fixing length of the outer connecting sleeve and the first pipeline is greater than the fitting and fixing length of the inner connecting sleeve and the first pipeline.

In some embodiments, the first pipeline assembly includes: a first pipeline and an outer connecting sleeve, the outer connecting sleeve is attached to the outer wall of the first pipeline, and the first pipeline includes: The first pipeline body and the inner peripheral wall integrally formed on the end surface of the first pipeline body, wherein the inner peripheral wall is formed by cutting the first pipeline, and the outer connecting sleeve constitutes the The outer peripheral wall, the first pipeline, the outer connecting sleeve and the inner peripheral wall jointly define the annular groove.

In some embodiments, the inner wall surface of the inner peripheral wall is flush with the inner wall surface of the first pipeline body, and the outer wall surface of the inner peripheral wall is inside the outer wall surface of the first pipeline body.

In some embodiments, the length of the outer connecting sleeve protruding from the end surface of the first pipeline body is greater than the length of the inner peripheral wall protruding from the end surface of the first pipeline body, and the second pipeline The component is welded and fixed with the outer connecting sleeve.

In some embodiments, the outer connecting sleeve is provided with a positioning device, and one end of the second pipeline assembly close to the first pipeline assembly stops against the positioning device.

In some embodiments, the first pipeline assembly includes: a first pipeline and an inner connecting sleeve, the inner connecting sleeve is attached to the inner wall of the first pipeline, and the first pipeline includes: The first pipeline body and the outer peripheral wall integrally formed on the end surface of the first pipeline body, wherein the outer peripheral wall is formed by cutting the first pipeline, and the inner connecting sleeve constitutes the The inner peripheral wall, the first pipeline, the inner connecting sleeve and the outer peripheral wall jointly define the annular groove.

In some embodiments, the outer wall surface of the outer peripheral wall is flush with the outer wall surface of the first pipeline body, and the inner wall surface of the outer peripheral wall is outside the inner wall surface of the first pipeline body.

In some embodiments, the length of the outer peripheral wall protruding from the end surface of the first pipeline body is smaller than the length of the inner connecting sleeve protruding from the end surface of the first pipeline body, and the second pipeline The component is welded and fixed with the inner connecting sleeve.

In some embodiments, the inner connecting sleeve is provided with a positioning device, and an end of the second pipeline component close to the first pipeline component stops against the positioning device.

In some embodiments, the second tubing assembly includes a second tubing;

The first pipeline assembly includes a first pipeline and a sleeve, the sleeve includes a first section, a middle section and a second section connected in sequence, one end of the second pipeline extends into the first and connected to the first section by welding, the first pipeline includes a first extension sub-pipe located at one end of the first pipeline and a first extension sub-pipe connected with the first extension sub-pipe The first connecting sub-pipe, the first extending sub-pipe extends into the interior of the middle section, the first connecting sub-pipe is connected to the inner surface of the second section by welding, the first extending sub-pipe The tube is spaced apart from the inner surface of the middle section, the inner surface of the middle section and the outer surface of the first protruding sub-pipe define the annular groove, and the opening of the annular groove faces the first a paragraph.

In some embodiments, the first sub-pipe extends into the second pipeline.

In some embodiments, both the melting point of the sleeve and the melting point of the second pipeline are lower than the melting point of the first pipeline, wherein the difference between the melting point of the first pipeline and the melting point of the sleeve is The difference is greater than or equal to a preset value, and the difference between the melting point of the first pipeline and the melting point of the second pipeline is greater than or equal to the preset value.

In some embodiments, an inner diameter of a portion of the intermediate section is larger or smaller than an inner diameter of another portion of the intermediate section.

In some embodiments, the inner diameter of the middle section first increases and then decreases along its length;

Or, the inner diameter of the middle section first decreases and then increases along its length direction;

Alternatively, the middle section is a bellows.

In some embodiments, the intermediate section includes a first connecting portion, a second connecting portion and a third connecting portion, the first section, the first connecting portion, the second connecting portion, the third connecting portion The connection part and the second section are connected in sequence, wherein the inner diameter of the first connection part and the inner diameter of the third connection part decrease toward a direction away from the second connection part.

In some embodiments, the inner surface of each of the first connecting portion and the third connecting portion is a spherical surface, and the inner surface of the second connecting portion is a cylindrical surface.

In some embodiments, the material of the first plumbing component includes at least one of iron and copper, and the material of the second plumbing component includes copper.

Other embodiments of the present disclosure also provide a pipe sleeve, the pipe sleeve includes a first section, a middle section and a second section connected in sequence, and the inner diameter of a part of the middle section is larger or smaller than the middle section The inner diameter of the other part, the inner surface of the middle section is provided with a sleeve annular groove, and the opening of the sleeve annular groove faces the first section. The sleeve has features that allow more excess solder to be bonded.

In some embodiments, the inner diameter of the middle section first increases and then decreases along its length;

Or, the inner diameter of the middle section first decreases and then increases along its length direction;

Alternatively, the middle section is a bellows.

In some embodiments, the sleeve further includes a stop ring plate located in the middle section, and the sleeve ring is defined between the stop ring plate and the middle section. groove.

In some embodiments, the stop ring plate is connected to an end of the middle section adjacent to the second section.

In some embodiments, the intermediate section includes a first connecting portion, a second connecting portion and a third connecting portion, the first section, the first connecting portion, the second connecting portion, the third connecting portion The connection part and the second section are connected in sequence, wherein the inner diameter of the first connection part and the inner diameter of the third connection part decrease toward a direction away from the second connection part.

In some embodiments, the inner surface of each of the first connecting portion and the third connecting portion is a spherical surface, and the inner surface of the second connecting portion is a cylindrical surface.

Some other embodiments of the present disclosure also provide an air conditioner, the air conditioner includes the above pipeline device, and the air conditioner operates stably.

Description of drawings

Figure 1 is a schematic illustration of a line set according to some embodiments of the present disclosure.

Figure 2 is a schematic illustration of a line set according to some embodiments of the present disclosure.

Figure 3 is a schematic illustration of a line set according to some embodiments of the present disclosure.

Figure 4 is a schematic illustration of a line set according to some embodiments of the present disclosure.

Figure 5 is a schematic illustration of a line set according to some embodiments of the present disclosure.

Figure 6 is a cross-sectional view of a line set according to some embodiments of the present disclosure.

7 is a schematic illustration of a sleeve according to some embodiments of the present disclosure.

Figure 8 is a schematic illustration of a line set according to some embodiments of the present disclosure.

Figure 9 is a schematic illustration of a line set according to some embodiments of the present disclosure.

Figure 10 is a schematic illustration of a line set according to some embodiments of the present disclosure.

Reference signs:

The pipeline device 10, the first pipeline assembly 1, the first pipeline 11, the first pipeline body 111, the end 112 of the first pipeline 11, the inner peripheral wall 112, the outer connecting sleeve 12, the inner connecting sleeve 13, the second One extends into the sub-pipe 14, the first connecting sub-pipe 15, the second pipeline assembly 2, the second pipeline 21, the lower end 211 of the second pipeline 21, the annular groove 3, the positioning device 4, the welding area 5, Sleeve 6 , first segment 61 , middle segment 62 , first connecting portion 621 , second connecting portion 622 , third connecting portion 623 , second segment 63 , stop ring plate 65 , and ring groove 66 of the sleeve.

Detailed ways

Embodiments of the present disclosure are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the figures are exemplary and are intended to explain the present disclosure and should not be construed as limiting the present disclosure. In describing the present disclosure, it is to be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise", "Axial", The orientation or positional relationship indicated by "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying the referred device or element. The jig must have a particular orientation, be constructed, and operate in a particular orientation, and thus should not be construed as a limitation of the present disclosure.

The pipeline device 10 according to some embodiments of the present invention will be described in detail below with reference to FIGS. 1-10 .

Referring to FIGS. 1-10 , the pipeline device 10 according to some embodiments of the present invention may include: a first pipeline assembly 1 and a second pipeline assembly 2 .

Wherein, the end of the first pipeline component 1 is formed with an annular groove 3, one end of the annular groove 3 is open, and the other end of the annular groove 3 is closed. The second pipeline component 2 is welded and fixed to the first pipeline component 1 and the welding area corresponds axially to the annular groove 3 .

In some embodiments, as shown in FIGS. 1-3 , the second pipeline assembly 2 is adapted to be welded and fixed to the outer peripheral wall 113 of the annular groove 3 .

In some other embodiments, as shown in FIG. 4 , the second pipeline component 2 is adapted to be welded and fixed to the inner peripheral wall 112 of the annular groove 3 .

In some other embodiments, the second pipeline component 2 is adapted to be welded to both the outer peripheral wall 113 and the inner peripheral wall 112 of the annular groove 3 .

The welding area 5 corresponds to the annular groove 3 in the axial direction, so that it is convenient to collect the solder dripping from the welding area 5 during welding. In other words, the annular groove 3 is directly opposite to the welding area 5. When the welding operation is performed in the welding area 5, the excess solder in the welding area 5 will drop into the annular groove 3, so as to prevent the solder from further dripping on the parts inside the first pipeline assembly 1, and ensure that the inside of the pipeline device 10 Relatively clean. At the same time, it can also prevent excess solder from entering the system pipeline to form welding bumps and causing damage to the system.

The extension direction of the second pipeline assembly 2 is the same as that of the first pipeline assembly 1 , and its extension direction is not limited to the horizontal direction shown in FIGS. 1-4 , for example, it can also extend in a vertical direction. As shown in FIGS. 5 to 10 , in some embodiments, the second piping assembly 2 can be located above the first piping assembly 1 , so that the welding area between the second piping assembly 2 and the first piping assembly 1 5 is located above the annular groove 3, so that the annular groove 3 collects excess solder falling from the soldering area 5.

According to the pipeline device 10 of some embodiments of the present invention, by setting the annular groove 3 corresponding to the welding area 5, it can be ensured that the excess solder at the welding area 5 will drop to the annular groove 3, and can be placed in the annular groove 3 internal condensation to prevent the solder from further dripping onto the parts inside the first pipeline assembly 1, thereby further preventing the internal parts of the first pipeline assembly 1 from being stuck or producing abnormal noise, and at the same time lowering the temperature of the second pipeline assembly 2 The difficulty of welding with the first pipeline component 1 reduces the risk of pipeline breakage and leakage.

In some embodiments of the present invention, a part of the second pipeline assembly 2 is inserted into the annular groove 3 . Referring to FIG. 1 , the left part of the second pipeline assembly 2 extends into the annular groove 3 .

In some embodiments, as shown in FIG. 1 , the end surface of the second pipeline assembly 2 protruding into the annular groove 3 (that is, the left end of the second pipeline assembly 2 in FIG. 1 ) and the closure of the annular groove 3 Ends (ie, the left end of the annular groove 3 in FIG. 1 ) are spaced apart, thereby ensuring that there is enough space in the annular groove 3 to receive excess solder falling from the soldering area 5 . The closed end of the annular groove 3 can be positioned to effectively control the welding depth of the connected pipelines, ensure the welding depth and reduce the risk of leakage.

1, the width of the annular groove 3 is W1, W1 is equal to or greater than the wall thickness of the left end of the second pipeline assembly 2, so that the left end of the second pipeline assembly 2 extends into the annular groove 3. The depth of the annular groove 3 is D2, and the distance between the left end surface of the second pipeline component 2 and the left end of the annular groove 3 is D1.

Optionally, the part of the second pipeline component 2 protruding into the annular groove 3 is a fitting section, and the fitting section and the annular groove 3 are clearance fit. Referring to Fig. 1, the length of the mating section is D2-D1.

Further, in some embodiments, as shown in FIG. 1 , the second pipeline component 2 and the outer peripheral wall of the annular groove 3 are welded and fixed, and the second pipeline component 2 and the inner peripheral wall 112 of the annular groove 3 are spaced apart to A gap is formed so as to store solder in the gap between the second pipeline assembly 2 and the inner peripheral wall 112 of the annular groove 3, thereby compensating the capacity of the annular groove 3 to accommodate solder, and at the same time, the solder in the gap solidifies Afterwards, the firmness of the connection between the second pipeline component 2 and the inner peripheral wall 112 of the annular groove 3 can also be improved. In other words, in addition to being directly welded and fixed to the outer peripheral wall of the annular groove 3, the second pipeline component 2 is also indirectly fixed to the inner peripheral wall 112 of the annular groove 3 through the solder in the gap, forming a double contact and effectively reducing the pipeline device 10. risk of breakage.

In some embodiments of the present invention, as shown in FIG. 2, the first pipeline assembly 1 may include: an inner connection sleeve 13, an outer connection sleeve 12, and a first pipeline 11, wherein the inner connection sleeve 13 is located in the first tube The inner wall surface of the pipeline 11 , and the inner connecting sleeve 13 and the first pipeline 11 are fitted together to reduce the radial dimension of the first pipeline assembly 1 . The inner connecting sleeve 13 and the first pipeline 11 can be connected by welding. The outer connecting sleeve 12 is located on the outer wall surface of the first pipeline 11, and the outer connecting sleeve 12 and the first pipeline 11 are fitted together to further reduce the radial dimension of the first pipeline assembly 1.

The inner connecting sleeve 13, the outer connecting sleeve 12 and the first pipeline 11 jointly define an annular groove 3 that can be used to collect solder, and the inner connecting sleeve 13 forms the inner peripheral wall of the annular groove 3, and the outer connecting sleeve 12 forms the annular groove 3 peripheral walls.

Further, the first pipeline 11 and the outer connecting sleeve 12 are adapted to be fixedly connected by welding, and the first pipeline 11 and the inner connecting sleeve 13 are adapted to be fixedly connected by welding.

In some embodiments of the present invention, as shown in FIG. 2 , the length of the outer connecting sleeve 12 protruding to the right from the right end face of the first pipeline 11 is D5, and the inner connecting sleeve 13 extends rightward to the length of the first pipeline 11. The length of the right end surface is D6, and D5 and D6 satisfy the relationship: D5>D6. The outer connecting sleeve 12 and the second pipeline component 2 can be fixed by welding, and the connecting area between the two is formed as the welding area 5 .

The material of the first pipeline assembly 1 includes at least one of iron and copper, and the material of the second pipeline assembly 2 includes copper.

Optionally, the first pipeline 11 , the inner connecting sleeve 13 , and the outer connecting sleeve 12 may be made of ferrous materials such as carbon steel and stainless steel, or may be made of copper. The second pipeline component 2 can be a copper pipeline, a steel pipeline, or a combined pipeline made of copper and steel.

In some embodiments of the present invention, as shown in FIG. 2, the fixed length of the first pipeline 11 and the outer connecting sleeve 12 is D7, and the fixed length of the first pipeline 11 and the inner connecting sleeve 13 is D8. , D7 and D8 satisfy the relational expression: D7>D8. In this way, the connection between the first pipeline 11 and the outer connecting sleeve 12 is more firm, and after the outer connecting sleeve 12 is connected with the second pipeline assembly 2 , the outer connecting sleeve 12 is not easily separated from the first pipeline 11 .

In some embodiments of the present invention, as shown in FIGS. The wall surface, and the outer connecting sleeve 12 is attached to the first pipeline 11 so as to reduce the radial dimension of the first pipeline assembly 1 . The outer connecting sleeve 12 and the first pipeline 11 can be connected by welding. In some embodiments shown in FIG. 1 , the connection length between the outer connecting sleeve 12 and the first pipeline 11 is D4, and D4≥3mm. Optionally, D4 is 4mm, 5mm, 6mm, 8mm and so on. In some embodiments shown in FIG. 3 , the connection length between the outer connecting sleeve 12 and the first pipeline 11 is D12.

The first pipeline 11 may include: a first pipeline body 111 and an inner peripheral wall 112, the inner peripheral wall 112 is integrally formed on the right end surface of the first pipeline body 111, and the inner peripheral wall 112 may be formed by cutting the first pipeline 11 , The outer connecting sleeve 12 constitutes the peripheral wall.

As shown in FIG. 1 , the outer wall surface of the first pipeline 11 is cut to a thickness of W1, and the remaining part is the inner peripheral wall 112. The connection length between the outer connecting sleeve 12 and the first pipeline body 111 is D4. As shown in FIG. 3 , the outer wall surface of the first pipeline 11 is cut to a thickness of W2, and the remaining part is the inner peripheral wall 112. The connection length between the outer connecting sleeve 12 and the first pipeline body 111 is D12. The outer connecting sleeve 12 , the inner peripheral wall 112 and the first pipeline 11 jointly define an annular groove 3 .

Further, the inner wall surface of the first pipeline body 111 is flush with the inner wall surface of the inner peripheral wall 112 , which is convenient to simplify the processing procedure of the inner wall surface of the first pipeline 11 .

The outer wall surface of the inner peripheral wall 112 is in the inner side of the outer wall surface of the first pipeline body 111, and in the radial direction of the first pipeline 11, The margin is W1 or W2.

In some embodiments of the present invention, the length of the inner peripheral wall 112 protruding from the end surface of the first pipeline body 111 is shorter than the length of the outer connecting sleeve 12 protruding from the end surface of the first pipeline body 111 . 1, the length of the outer connecting sleeve 12 protruding rightward from the right end face of the first pipeline body 111 is D2+D3, and the length of the inner peripheral wall 112 extending rightward from the right end face of the first pipeline body 111 is D2. , obviously D2+D3>D2. Referring to Figure 3, the length of the outer connecting sleeve 12 protruding rightward from the right end face of the first pipeline body 111 is D11, and the length of the inner peripheral wall 112 extending rightward from the right end face of the first pipeline body 111 is D9, obviously There is D11>D9.

In some embodiments of the present invention, as shown in FIG. 1 and FIG. 3 , the outer connecting sleeve 12 and the second pipeline assembly 2 can be fixed by welding, and the connection area between the two is formed as a welding area 5 .

Optionally, the first pipeline 11 and the outer connection sleeve 12 may be made of ferrous materials such as carbon steel and stainless steel, or may be made of copper. The second pipeline component 2 can be a copper pipeline, a steel pipeline, or a combined pipeline made of copper and steel.

In some embodiments of the present invention, as shown in FIG. 4 , the first pipeline assembly 1 may include: an inner connecting sleeve 13 and a first pipeline 11 , the inner connecting sleeve 13 is disposed on the inner wall of the first pipeline 11 , Moreover, the inner connecting sleeve 13 is arranged in close contact with the first pipeline 11 to reduce the radial dimension of the first pipeline assembly 1 . The inner connecting sleeve 13 and the first pipeline 11 can be connected by welding. In some embodiments shown in FIG. 4 , the connection length between the inner connecting sleeve 13 and the first pipeline 11 is D16.

The first pipeline 11 may include: a first pipeline body 111 and an outer peripheral wall 113, the outer peripheral wall 113 is integrally formed on the right end surface of the first pipeline body 111, and the outer peripheral wall 113 may be formed by cutting the first pipeline 11 , The inner connection sleeve 13 constitutes the inner peripheral wall.

As shown in FIG. 4 , the inner wall surface of the first pipeline 11 is cut to a thickness of W3, and the remaining part is the outer peripheral wall 113 . The connection length between the inner connecting sleeve 13 and the first pipeline body 111 is D16. The inner connecting sleeve 13 , the outer peripheral wall 113 and the first pipeline 11 jointly define an annular groove 3 .

Further, the outer wall surface of the first pipeline body 111 is flush with the outer wall surface of the peripheral wall 113 , which facilitates the simplification of the processing procedure of the outer wall surface of the first pipeline 11 . The inner wall surface of the outer peripheral wall 113 is outside the inner wall surface of the first pipeline body 111 , and in the radial direction of the first pipeline 11 , the single wall between the inner wall surface of the outer peripheral wall 113 and the inner wall surface of the first pipeline body 111 The margin is W3.

Optionally, as shown in FIG. 4 , the length of the inner connecting sleeve 13 protruding rightward from the right end surface of the first pipeline body 111 is D15, and the outer peripheral wall 113 extends rightward by the length of the right end surface of the first pipeline body 111 For D13, it is obvious that D15>D13.

In some embodiments of the present invention, as shown in FIG. 4 , the inner connecting sleeve 13 and the second pipeline component 2 can be fixed by welding, and the connection area between the two is formed as a welding area 5 .

The material of the first pipeline assembly 1 includes iron or copper, and the material of the second pipeline assembly 2 includes copper. Optionally, the first pipeline 11 and the inner connecting sleeve 13 may be made of ferrous materials such as carbon steel and stainless steel, or may be made of copper. The second pipeline component 2 can be a copper pipeline, a steel pipeline, or a combined pipeline made of copper and steel.

In some embodiments, as shown in FIGS. 3-4 , the first pipeline assembly 1 is provided with a positioning device 4 , specifically, in the example of FIG. 3 , the positioning device 4 can be provided on the inner wall surface of the outer connecting sleeve 12 , and the distance between the positioning device 4 and the bottom of the annular groove 3 is D10; in the example of FIG. D14. When the second pipeline component 2 and the first pipeline component 1 are nested and fitted, the positioning device 4 is suitable for stopping against the end of the second pipeline component 2, and the position of the positioning device 4 determines the relationship between the second pipeline component 2 and the first pipeline component 1. The distance between the annular groove 3 realizes the positioning of the second pipeline assembly 2 on the first pipeline assembly 1, which facilitates the welding operation of the joint between the second pipeline assembly 2 and the first pipeline assembly 1, and can also It is ensured that the welding length of the second pipeline assembly 2 and the first pipeline assembly 1 meets actual requirements.

In some embodiments of the present invention, flame brazing, high-frequency welding, etc. may be used for welding.

In some embodiments, the positioning device 4 is configured as a plurality of positioning protrusions, and the plurality of positioning protrusions are adapted to be distributed at intervals in the circumferential direction, so as to improve positioning reliability.

In some embodiments, the positioning device 4 is configured as a positioning protrusion.

In some embodiments, the positioning device 4 is configured as an annular protrusion, and the annular protrusion is suitable for being distributed along the entire circle in the circumferential direction, so as to improve positioning reliability.

A pipeline device 10 of a specific example of the present invention will be described below with reference to FIG. 1 .

The piping device 10 includes a first piping assembly 1 and a second piping assembly 2 . The first pipeline assembly 1 includes an outer connecting sleeve 12 and a first pipeline 11, the outer connecting sleeve 12 is welded on the outer wall of the first pipeline 11, and the welding length is D4, where D4=5mm.

The first pipeline 11 includes a first pipeline body 111 and an inner peripheral wall 112. The inner peripheral wall 112 is integrally formed on the right end face of the first pipeline body 111. The inner peripheral wall 112 is formed by cutting the first pipeline 11. The side thickness is W1, the outer connecting sleeve 12 constitutes the outer peripheral wall of the annular groove 3 , and the outer connecting sleeve 12 , the inner peripheral wall 112 and the first pipeline 11 jointly define the annular groove 3 .

The length of the outer connecting sleeve 12 protruding rightward from the right end surface of the first pipeline body 111 is D2+D3, and the length of the inner peripheral wall 112 extending rightward from the right end surface of the first pipeline body 111 is D2, D2+D3>D2 . The outer connecting sleeve 12 and the second pipeline assembly 2 are fixed by welding.

The width of the annular groove 3 is W1, W1 is equal to or greater than the wall thickness of the left end of the second pipeline assembly 2, and the left end of the second pipeline assembly 2 protrudes into the annular groove 3. The depth of the annular groove 3 is D2, and the distance between the left end surface of the second pipeline component 2 and the left end of the annular groove 3 is D1.

The first pipeline 11 and the outer connecting sleeve 12 are made of stainless steel, and the second pipeline component 2 is made of red copper pipeline.

The pipeline device 10 of a specific example of the present invention will be described below with reference to FIG. 2 .

The piping device 10 includes a first piping assembly 1 and a second piping assembly 2 . The first pipeline assembly 1 includes an inner connecting sleeve 13, an outer connecting sleeve 12 and a first pipeline 11, the inner connecting sleeve 13 is welded on the inner wall of the first pipeline 11, and the welding length is D8; the outer connecting sleeve 12 is welded at the first The outer wall surface of a pipeline 11 has a welding length of D7, where D7>D8.

The inner connecting sleeve 13, the outer connecting sleeve 12 and the first pipeline 11 jointly define an annular groove 3 that can be used to collect solder, and the inner connecting sleeve 13 forms the inner peripheral wall of the annular groove 3, and the outer connecting sleeve 12 forms the annular groove 3 peripheral walls.

In some embodiments of the present invention, as shown in FIG. 2 , the length of the outer connecting sleeve 12 protruding to the right from the right end face of the first pipeline 11 is D5, and the inner connecting sleeve 13 extends rightward to the length of the first pipeline 11. The length of the right end surface is D6, and D5>D6. The outer connecting sleeve 12 and the second pipeline assembly 2 are fixed by welding.

The first pipeline 11 , the inner connecting sleeve 13 and the outer connecting sleeve 12 are made of stainless steel, and the second pipeline component 2 is made of red copper pipeline.

The stainless steel sleeve 13, stainless steel sleeve 12 and stainless steel pipeline 11 are pre-welded and fixed, and only flame welding is required on site. An annular groove 3 is formed between the stainless steel sleeve 13, stainless steel sleeve 12 and stainless steel pipeline 11, and the stainless steel sleeve 12 and the copper pipeline 2. During welding, the excess solder can be stored in the annular groove 3, preventing the solder from entering the pipeline system and causing damage to the system, reducing the difficulty of flame welding steel pipe pipelines, and reducing the risk of pipeline fracture and leakage.

The pipeline device 10 of a specific example of the present invention will be described below with reference to FIG. 3 .

The piping device 10 includes a first piping assembly 1 and a second piping assembly 2 . The first pipeline assembly 1 includes an outer connecting sleeve 12 and a first pipeline 11 , the outer connecting sleeve 12 is welded on the outer wall of the first pipeline 11 , and the welding length is D12.

The first pipeline 11 includes a first pipeline body 111 and an inner peripheral wall 112. The inner peripheral wall 112 is integrally formed on the right end face of the first pipeline body 111. The inner peripheral wall 112 is formed by cutting the first pipeline 11. The edge thickness is W2, the outer connecting sleeve 12 constitutes the outer peripheral wall of the annular groove 3 , and the outer connecting sleeve 12 , the inner peripheral wall 112 and the first pipeline 11 jointly define the annular groove 3 .

The length of the outer connecting sleeve 12 protruding rightward from the right end surface of the first pipeline body 111 is D11, and the length of the inner peripheral wall 112 extending rightward from the right end surface of the first pipeline body 111 is D9, D11>D9. The outer connecting sleeve 12 and the second pipeline assembly 2 are fixed by welding.

A positioning device 4 is provided on the inner wall of the outer connecting sleeve 12, and the distance between the positioning device 4 and the bottom of the annular groove 3 is D10.

The first pipeline 11 and the outer connecting sleeve 12 are made of stainless steel, and the second pipeline component 2 is made of red copper pipeline.

The pipeline device 10 of a specific example of the present invention will be described below with reference to FIG. 4 .

The piping device 10 includes a first piping assembly 1 and a second piping assembly 2 . The first pipeline assembly 1 includes an inner connecting sleeve 13 and a first pipeline 11 , the inner connecting sleeve 13 is welded to the inner wall of the first pipeline 11 , and the welding length is D16.

The first pipeline 11 may include: a first pipeline body 111 and an outer peripheral wall 113, the outer peripheral wall 113 is integrally formed on the right end surface of the first pipeline body 111, and the outer peripheral wall 113 may be formed by cutting the first pipeline 11 , the cutting unilateral thickness is W3, the inner connecting sleeve 13 constitutes the inner peripheral wall of the annular groove 3 , and the inner connecting sleeve 13 , the outer peripheral wall 113 and the first pipeline 11 jointly define the annular groove 3 .

The length of the inner connecting sleeve 13 protruding rightward from the right end surface of the first pipeline body 111 is D15, and the length of the outer peripheral wall 113 extending rightward from the right end surface of the first pipeline body 111 is D13, D15>D13. The inner connecting sleeve 13 and the second pipeline assembly 2 are fixed by welding.

A positioning device 4 is provided on the outer wall of the inner connecting sleeve 13, and the distance between the positioning device 4 and the bottom of the annular groove 3 is D14.

The first pipeline 11 and the inner connecting sleeve 13 are made of stainless steel, and the second pipeline component 2 is made of red copper pipeline.

In some embodiments of the present invention, as shown in FIGS. 5 to 10 , the second pipeline assembly 2 includes a second pipeline 21; the first pipeline assembly 1 includes a first pipeline 11 and The pipe sleeve 6.

The sleeve 6 according to some embodiments of the present invention includes a first segment 61 , a middle segment 62 and a second segment 63 connected in sequence. One end of the second pipeline 21 protrudes into the first section 61 and is welded to the first section 61 .

The first pipeline 11 includes a first extension sub-pipe 14 positioned at one end 112 of the first pipeline 11 and a first connection sub-pipe 15 connected to the first extension sub-pipe 14, the first extension sub-pipe 14 Stretch into the inside of the middle section 62, the first connection sub-pipe 15 is connected to the inner surface of the second section 63 by welding, the first extension sub-pipe 14 is spaced apart from the inner surface of the middle section 62, and the inner surface of the middle section 62 is connected to the inner surface of the middle section 62. The outer surface of the first protruding sub-pipe 14 defines an annular groove 3 , and the opening of the annular groove 3 faces the first section 61 .

In the related art, when the second pipeline 21 and the first segment 61 are welded, the excess solder will enter the sleeve 6 from between the second pipeline 21 and the sleeve 6 and flow to the end surface of the first pipeline 11 , the rich solder on the end surface of the first pipeline 11 forms welding bumps after cooling. If the performance (mechanical performance, corrosion resistance, high/low temperature performance) and chemical composition of the surplus solder does not match with the first pipeline 11, and the melting point is relatively different, it will make it difficult for the surplus solder to adhere to the first pipeline 11. This can cause weld flash to fall off causing weld flash to create noise and damage gas components. For example, the temperature of the surplus solder is much lower than the melting point of the first pipeline 11 , making it difficult for the surplus solder to adhere to the first pipeline 11 .

The pipeline device 10 according to some embodiments of the present invention extends into the interior of the middle section 62 by setting the first sub-pipe 14 extending into it, and the inner surface of the middle section 62 and the outer surface of the first sub-pipe 14 define an opening. Towards the annular groove 3 of the first segment 61 . In this way, the surplus solder during welding of the second pipeline 21 and the first section 61 will enter into the sleeve 6 from between the second pipeline 21 and the sleeve 6 and then flow into the annular groove 3, thereby making it difficult for the surplus solder to Flow into the end surface of the first pipeline 11 (the first sub-pipe 14) so as to effectively reduce the weld bump on the end surface of the first pipeline 11 (the first sub-pipe 14), and even make the first tube There is no welding bump on the end face of road 11. As a result, noise and damage to other components due to weld flash falling off can be reduced.

Therefore, the piping device 10 according to some embodiments of the present invention has the advantages of less (or even no welding) on the first piping 11 , which can effectively reduce the operating noise of the air conditioner including the piping device 10 and avoid welding The tumor damages other parts of the air conditioner.

As shown in FIGS. 5 to 7 , the sleeve 6 according to some embodiments of the present invention includes a first segment 61 , a middle segment 62 and a second segment 63 connected in sequence.

One end of the second pipeline 21 extends into the first section 61 and is connected to the first section 61 by welding. The first pipeline 11 includes a first extension sub-pipe 14 located at one end 112 of the first pipeline 11 And the first connecting sub-pipe 15 connected with the first extending sub-pipe 14, the first extending sub-pipe 14 extends into the inside of the middle section 62, the first connecting sub-pipe 15 is connected to the inner surface of the second section 63 by welding , the first sub-pipe 14 and the inner surface of the middle section 62 are arranged at intervals, the inner surface of the middle section 62 and the outer surface of the first sub-pipe 14 extend into an annular groove 3, and the opening of the annular groove 3 faces the first A period of 61.

As shown in Figures 5 to 10, in order to facilitate understanding, the length directions of the second pipeline 21, the first pipeline 11 and the sleeve 6 are all in the up and down direction for specific description, and the up and down directions are as shown in Figures 5 to 10 indicated by arrow A. For example, the second pipeline 21, the first pipeline 11, the first section 61 and the second section 63 are all pipeline sections with constant inner diameters, and the second pipeline 21, the pipe sleeve 6 and the first pipeline 11 are arranged from top to bottom Connect sequentially. The lower end 211 of the second pipeline 21 extends into the first section 61 and is connected to the first section 61 by welding; one end 112 of the first pipeline 11 is the upper end of the first pipeline 11, that is, the first extension The sub-pipe 14 is located above the first connecting sub-pipe 15 , and the first connecting sub-pipe 15 is welded to the inner surface of the second section 63 .

In some embodiments, both the melting point of the sleeve 6 and the melting point of the second pipeline 21 are lower than the melting point of the first pipeline 11 . Wherein, the difference between the melting point of the first pipeline 11 and the melting point of the sleeve 6 is greater than or equal to a preset value, and the difference between the melting point of the first pipeline 11 and the melting point of the second pipeline 21 is greater than or equal to a preset value. Specifically, the pipe sleeve 6 and the second pipeline 21 are copper pipes, and the first pipeline 11 is a steel pipe. The difference between the melting point of the first pipeline 11 and the melting point of the pipe sleeve 6 is greater than the preset value, the first pipeline 11 and the second section 63 are connected by brazing in a tunnel furnace with a higher welding temperature, and the pipe sleeve 6 and the second pipeline 21 By manual brazing, the second pipeline 21 and the first pipeline 11 can be connected through the sleeve 6 and can reduce the production cost of the pipeline device 10 according to some embodiments of the present invention, and improve the production cost of the pipeline device 10 according to some embodiments of the present invention. The production efficiency of the pipeline set 10. The difference between the melting point of the steel pipe and the melting point of the copper pipe sleeve is greater than the preset value, and the difference between the melting point of the steel pipe and the melting point of the copper pipe is greater than the preset value. Therefore, the temperature of the solder during welding of the pipe sleeve 6 and the second pipeline 21 is much higher. The temperature of the solder is less than the melting point of the first pipeline 11 , and the temperature of the solder is quite different from the melting point of the first pipeline 11 . It is difficult for the excess solder to adhere to the first pipeline 11 when the sleeve 6 and the second pipeline 21 are welded.

As shown in FIG. 8 , in some embodiments, the distance between the second pipeline 21 and the first pipeline 11 is less than or equal to a preset value. Specifically, the distance between the first extending sub-pipe 14 and the second pipeline 21 is less than or equal to a preset value. The first protrudes into the annular groove 3 defined between the outer surface of the sub-pipe 14 and the inner surface of the middle section 62, and the distance between the second pipeline 21 and the first pipeline 11 is less than or equal to a preset value so that more Much surplus solder is bonded and stored in the annular groove 3.

Optionally, the distance between the second pipeline 21 and the first pipeline 11 is 0, that is, the one end of the second pipeline 21 and the one end 112 of the first sub-pipe 14 abut against each other , so that the excess solder can enter the annular groove 3 defined between a part of the first pipeline 11 and the middle section 62, and be bonded to the middle section 62 and the second pipeline 21, making it difficult for the surplus solder to enter Weld bumps are formed in the first pipeline 11 . For example, the lower end 211 of the second pipe 21 and the upper end 112 of the first pipe 11 abut against each other.

As shown in FIGS. 9 and 10 , the first sub-pipe 14 extends into the second pipeline 21 . Specifically, the annular groove 3 defined between the first extension sub-pipe 14 and the middle section 62, and the outer diameter of the end 112 of the first pipeline 11 (the first extension sub-pipe 14) or the first extension The outer diameter of the inlet pipe 14 is smaller than or equal to the inner diameter of the second pipeline 21 . A part of the one end 112 of the first pipeline 11 is extended into the second pipeline 21, so that the surplus solder can enter the annular recess defined between the first sub-pipe 14 and the middle section 62. In the slot 3, and bonded to the middle section 62 and the second pipeline 21, it is difficult for the surplus solder to enter the first pipeline 11 to form welding bumps. For example, the upper end 112 of the first pipeline 11 protrudes into the lower end 211 of the second pipeline 21 .

As shown in FIG. 9 , in some embodiments, the one end of the second pipeline 21 is located in the middle section 62 , the one end 112 of the first pipeline 11 is located in the middle section 62 and the first pipeline 11 The one end 112 extends into the second pipeline 21 . For example, the lower end 211 of the second pipeline 21 and the end 112 of the first pipeline 11 are located in the middle section 62, and the upper end 112 of the first pipeline 11 extends into the lower end 211 of the second pipeline 21 Inside.

As shown in FIG. 10 , in some embodiments, the one end 112 of the first pipeline 11 is located in the first section 61 and the one end 112 of the first pipeline 11 protrudes into the second pipeline 21 . For example, the upper end 112 of the first pipeline 11 is located in the first section 61 , and the upper end 112 of the first pipeline 11 extends into the lower end 211 of the second pipeline 21 .

As shown in FIGS. 2 and 3 , the inner diameter of a part of the middle section 62 is larger or smaller than the inner diameter of another part of the middle section 62 . The inner diameter of a part of the middle section 62 is larger or smaller than the inner diameter of another part of the middle section 62 , that is, the inner diameter of a part of the middle section 62 is not equal to the inner diameter of another part of the middle section 62 . The middle section 62 is a pipe section with a variable inner diameter. Compared with the section with constant inner diameter, the middle section 62 (reducing pipe section) can increase the flow of excess solder from one end of the middle section 62 (the end adjacent to the first section 61 ) to the other end of the middle section 62 (the end adjacent to the second section 63 ). ), so as to increase the flow distance of surplus solder flowing from the first section 61 to the second section 63. Thus, during the flow of the surplus solder on the inner surface of the middle section 62, the longer flow distance can make more surplus solder stick to the middle section 62 (sleeve 6), thereby reducing the flow to the first tube. The excess solder in the pipeline 11 is used to effectively reduce the weld bumps on the first pipeline 11, and even make the first pipeline 11 free of solder bumps. Thereby reducing the noise or damage to other components caused by the welding flash falling off.

Therefore, the sleeve 6 according to some embodiments of the present invention has the advantage of being able to bond more surplus solder.

In some embodiments, the inner diameter of the middle section 62 first increases and then decreases along its length direction, so as to increase the flow distance of the surplus solder in the middle section 62 , so that more surplus solder can be bonded to the middle section 62 . For example, the projection of the inner surface of the middle section 62 on the section of the middle section 62 (on which the axis of the middle section 62 is located) is two convex arcs, so that the inner diameter of the middle section 62 increases first from top to bottom decrease afterwards.

As shown in FIGS. 2 and 3 , in some embodiments, the middle section 62 includes a first connecting portion 621 , a second connecting portion 622 and a third connecting portion 623 . The first segment 61 , the first connecting portion 621 , the second connecting portion 622 , the third connecting portion 623 and the second segment 63 are sequentially connected. For example, the first segment 61, the first connecting portion 621, the second connecting portion 622, the third connecting portion 623 and the second segment 63 are sequentially connected from top to bottom,

The inner diameter of the first connecting portion 621 and the inner diameter of the third connecting portion 623 decrease toward a direction away from the second connecting portion 622 . That is to say, the first connecting portion 621 and the third connecting portion 623 are pipe sections with variable inner diameters, so that more surplus solder can be bonded to the first connecting portion 621 and the third connecting portion 623, so that the middle section 62 can be Attach more excess solder.

As shown in FIGS. 6 and 7 , in some embodiments, the inner surface of each of the first connecting portion 621 and the third connecting portion 623 is a spherical surface, and the inner surface of the second connecting portion 622 is a cylindrical surface. . That is to say, the cavity of each of the first connecting portion 621 and the third connecting portion 623 is in the shape of a ball table. Thus, the flow distance of excess solder on the inner surface of the first connecting portion 621 and the inner surface of the third connecting portion 623 can be further increased. And it can make the surplus solder flow from the first connection part 621 to the second connection part 622, so that the solder is close to the inner surface of the first connection part 621, preventing the solder on the first connection part 621 from flowing to the third connection part 623. dripping. The inner surface of the second connecting portion 622 is a cylindrical surface (with a constant inner diameter) to facilitate the flow of excess solder.

In some embodiments, the inner diameter of the middle section 62 first decreases and then increases along its length, so as to increase the flow distance of the surplus solder in the middle section 62 , so that more surplus solder can be bonded to the middle section 62 . For example, the projection of the inner surface of the middle section 62 on the section of the middle section 62 (on which the axis of the middle section 62 is located) is two concave arcs, so that the inner diameter of the middle section 62 decreases first from top to bottom increase afterwards.

In some embodiments, the middle section 62 is a bellows, and the inner diameter of the middle section 62 changes along its length in a wave shape (increase, decrease, increase, ..., decrease, increase, decrease, ..., or Decrease, increase, decrease, ..., increase, decrease, increase, ...). Therefore, the flow distance of the surplus solder in the middle section 62 is increased, so that the middle section 62 can bond more surplus solder. For example, the projection of the inner surface of the middle section 62 on the section of the middle section 62 (on which the axis of the middle section 62 is located) is two wavy lines, so that the inner diameter of the middle section 62 changes in a wavy line.

In some embodiments, the inner surface of the middle section 62 is provided with a sleeve annular groove 66 , and the opening of the sleeve annular groove 66 faces the first section 61 . Thus, the excess solder flowing from the first section 61 to the middle section 62 can be loaded in the pipe sleeve annular groove 66, and the surplus solder is bonded and stored in the pipe sleeve annular groove 66 and prevents the welding flash from falling off, and also prevents A weld flash is formed on the first pipeline 11 . A portion of the inner surface of the middle section 62 adjacent to the second section 63 is provided with a sleeve annular groove 66 . For example, the inner surface of the third connecting portion 623 defines a sleeve annular groove 66 .

As shown in FIG. 5 and FIG. 6 , in some embodiments, the sleeve 6 according to some embodiments of the present invention further includes a stop ring plate 65 .

The stop ring plate 65 is located in the middle section 62 , and a pipe sleeve annular groove 66 is defined between the stop ring plate 65 and the middle section 62 , and the opening of the pipe sleeve annular groove faces the first section 61 .

In some embodiments, the stop ring plate 65 is connected to an end of the middle section 62 adjacent to the second section 63 . Specifically, the stop ring plate 65 is connected to the third connecting portion 623 , and a sleeve annular groove 66 is defined between the stop ring plate 65 and the third connection portion 623 , and the sleeve annular groove 66 is ring-shaped.

The present invention also proposes an air conditioner. The air conditioner according to some embodiments of the present invention includes the pipeline device 10 according to some embodiments of the present invention.

Therefore, the air conditioner according to some embodiments of the present invention has less weld bumps on the first pipeline 11 on the pipeline device 10, which can effectively reduce the operating noise of the air conditioner including the pipeline device 10, and avoid welding bumps from damaging other parts of the air conditioner. parts.

In describing the present disclosure, it is to be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise", "Axial", The orientations or positional relationships indicated by "radial", "circumferential", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying the referred devices or elements Must be in a particular orientation, constructed, and operate in a particular orientation, and thus should not be construed as limiting on the present disclosure.

In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In the description of the present disclosure, "plurality" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

In this disclosure, terms such as "installation", "connection", "connection" and "fixation" should be interpreted in a broad sense, for example, it can be a fixed connection or a detachable connection unless otherwise clearly defined and limited. , or integrated; can be mechanically connected, can also be electrically connected or can communicate with each other; can be directly connected, can also be indirectly connected through an intermediary, can be the internal communication of two components or the interaction relationship between two components, Unless expressly defined otherwise. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present disclosure according to specific situations.

In the present disclosure, unless otherwise clearly stated and limited, a first feature being "on" or "under" a second feature may mean that the first and second features are in direct contact, or that the first and second features are indirect through an intermediary. touch. Moreover, "above", "above" and "above" the first feature on the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. "Below", "beneath" and "beneath" the first feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is less horizontally than the second feature.

In the description of this specification, descriptions referring to the terms "one embodiment", "some embodiments", "example", "specific examples", or "some examples" mean that specific features described in connection with the embodiment or example , structure, material or characteristic is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the described specific features, structures, materials or characteristics may be combined in any suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples and features of different embodiments or examples described in this specification without conflicting with each other.

Although the embodiments of the present disclosure have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limitations on the present disclosure, and those skilled in the art can understand the above-mentioned embodiments within the scope of the present disclosure. The embodiments are subject to changes, modifications, substitutions and variations.

Claims (33)

1. A pipeline set, comprising:

   a first pipeline component, the end of the first pipeline component is formed with an annular groove with one end open and the other end closed;

   A second pipeline component, the second pipeline component is welded and fixed to the first pipeline component, and the welding area is axially corresponding to the annular groove.
2. The pipeline device according to claim 1, wherein the second pipeline component is welded and fixed to the outer peripheral wall and/or the inner peripheral wall of the annular groove.
3. 2. The tubing set of claim 2, wherein a portion of the second tubing assembly is inserted into the annular groove.
4. The piping device according to claim 3, wherein an end face of the second piping assembly inserted into the annular groove is spaced apart from a closed end of the annular groove.
5. The piping device according to claim 3, wherein a portion of the second piping assembly inserted into the annular groove is in clearance fit with the annular groove.
6. The pipeline set according to claim 5, wherein the second pipeline component is welded to the outer peripheral wall and spaced apart from the inner peripheral wall.
7. The pipeline device according to claim 2, wherein the first pipeline assembly comprises: a first pipeline, an outer connecting sleeve and an inner connecting sleeve, and the inner connecting sleeve is attached to the first pipeline. The inner wall surface, the outer connecting sleeve is attached to the outer wall surface of the first pipeline, and the first pipeline, the outer connecting sleeve and the inner connecting sleeve jointly define the annular groove;

   Wherein the outer connecting sleeve constitutes the outer peripheral wall, and the inner connecting sleeve constitutes the inner peripheral wall.
8. The pipeline device according to claim 7, wherein the first pipeline and the outer connecting sleeve and the first pipeline and the inner connecting sleeve are fixed by welding.
9. The pipeline device according to claim 7, wherein the length of the outer connecting sleeve protruding from the end surface of the first pipeline is greater than the length of the inner connecting sleeve protruding from the end surface of the first pipeline, and The second pipeline component is welded and fixed to the outer connecting sleeve.
10. The pipeline device according to claim 7, wherein the fitting and fixing length of the outer connecting sleeve and the first pipeline is greater than the fitting and fixing length of the inner connecting sleeve and the first pipeline.
11. The pipeline device according to claim 2, wherein the first pipeline assembly comprises: a first pipeline and an outer connecting sleeve, and the outer connecting sleeve is attached to the outer wall of the first pipeline, so The first pipeline includes: a first pipeline body and the inner peripheral wall integrally formed on the end surface of the first pipeline body, wherein the inner peripheral wall is formed by cutting the first pipeline, and The outer connecting sleeve constitutes the outer peripheral wall, and the first pipeline, the outer connecting sleeve and the inner peripheral wall jointly define the annular groove.
12. The pipeline device according to claim 11, wherein, the inner wall surface of the inner peripheral wall is flush with the inner wall surface of the first pipeline body, and the outer wall surface of the inner peripheral wall is at the same level as the first pipeline body. inside of the outer wall.
13. The pipeline device according to claim 11, wherein the length of the outer connecting sleeve protruding from the end surface of the first pipeline body is greater than the length of the inner peripheral wall protruding from the end surface of the first pipeline body, And the second pipeline assembly is welded and fixed to the outer connecting sleeve.
14. The pipeline device according to claim 7 or 11, wherein the outer connecting sleeve is provided with a positioning device, and one end of the second pipeline component close to the first pipeline component stops against the positioning device. device.
15. The pipeline device according to claim 2, wherein the first pipeline assembly comprises: a first pipeline and an inner connecting sleeve, and the inner connecting sleeve is attached to the inner wall of the first pipeline, so that The first pipeline includes: a first pipeline body and the outer peripheral wall integrally formed on the end surface of the first pipeline body, wherein the outer peripheral wall is formed by cutting the first pipeline, and The inner connecting sleeve constitutes the inner peripheral wall, and the first pipeline, the inner connecting sleeve and the outer peripheral wall jointly define the annular groove.
16. The pipeline device according to claim 15, wherein the outer wall surface of the outer peripheral wall is flush with the outer wall surface of the first pipeline body, and the inner wall surface of the outer peripheral wall is at the same level as the first pipeline body. outside of the inner wall.
17. The pipeline device according to claim 15, wherein the length of the outer peripheral wall protruding from the end surface of the first pipeline body is shorter than the length of the inner connecting sleeve protruding from the end surface of the first pipeline body, And the second pipeline assembly is welded and fixed to the inner connecting sleeve.
18. The pipeline device according to claim 15, wherein the inner connecting sleeve is provided with a positioning device, and an end of the second pipeline component close to the first pipeline component stops against the positioning device.
19. The plumbing set of claim 1, wherein:

    The second pipeline assembly includes a second pipeline;

    The first pipeline assembly includes a first pipeline and a sleeve, the sleeve includes a first section, a middle section and a second section connected in sequence, one end of the second pipeline extends into the first and connected to the first section by welding, the first pipeline includes a first extension sub-pipe located at one end of the first pipeline and a first extension sub-pipe connected with the first extension sub-pipe The first connecting sub-pipe, the first extending sub-pipe extends into the interior of the middle section, the first connecting sub-pipe is connected to the inner surface of the second section by welding, the first extending sub-pipe The tube is spaced apart from the inner surface of the middle section, the inner surface of the middle section and the outer surface of the first protruding sub-pipe define the annular groove, and the opening of the annular groove faces the first a paragraph.
20. The pipeline set according to claim 19, wherein the first sub-pipe extends into the second pipeline.
21. The pipeline set according to claim 19, wherein both the melting point of the sleeve and the melting point of the second pipeline are lower than the melting point of the first pipeline, wherein the melting point of the first pipeline is the same as that of the first pipeline. The difference between the melting points of the sleeve is greater than or equal to a preset value, and the difference between the melting points of the first pipeline and the melting point of the second pipeline is greater than or equal to the preset value.
22. The line set of claim 19, wherein an inner diameter of a portion of the intermediate section is larger or smaller than an inner diameter of another portion of the intermediate section.
23. The line set of claim 22, wherein:

    The inner diameter of the middle section first increases and then decreases along its length direction;

    Or, the inner diameter of the middle section first decreases and then increases along its length direction;

    Alternatively, the middle section is a bellows.
24. The pipeline device according to any one of claims 19, 22 and 23, wherein the intermediate section comprises a first connecting portion, a second connecting portion and a third connecting portion, the first section, the second connecting portion A connection part, the second connection part, the third connection part and the second section are connected in sequence, wherein the inner diameter of the first connection part and the inner diameter of the third connection part are away from the second The direction of the connection decreases.
25. The pipeline set according to claim 24, wherein the inner surface of each of the first connecting portion and the third connecting portion is a spherical surface, and the inner surface of the second connecting portion is a cylinder noodle.
26. The plumbing set according to any one of claims 1-25, wherein the material of the first plumbing component includes at least one of iron and copper, and the material of the second plumbing component includes copper.
27. A pipe sleeve, comprising: a first section, a middle section and a second section connected in sequence, the inner diameter of a part of the middle section is larger or smaller than the inner diameter of the other part of the middle section, and the inner surface of the middle section An annular groove of a pipe sleeve is provided, and the opening of the annular groove of the pipe sleeve faces the first section.
28. The sleeve of claim 27, wherein:

    The inner diameter of the middle section first increases and then decreases along its length direction;

    Or, the inner diameter of the middle section first decreases and then increases along its length direction;

    Alternatively, the middle section is a bellows.
29. The sleeve of claim 27, wherein:

    The pipe sleeve also includes a stop ring plate located in the middle section, and the pipe sleeve annular groove is defined between the stop ring plate and the middle section.
30. The sleeve of claim 29, wherein the stop ring plate is connected to an end of the middle section adjacent to the second section.
31. The sleeve according to any one of claims 27-30, wherein the intermediate section comprises a first connecting portion, a second connecting portion and a third connecting portion, the first section, the first connecting portion , the second connecting portion, the third connecting portion and the second segment are connected in sequence, wherein the inner diameter of the first connecting portion and the inner diameter of the third connecting portion are directed away from the second connecting portion direction decreases.
32. The socket according to claim 31, wherein the inner surface of each of the first connecting portion and the third connecting portion is a spherical surface, and the inner surface of the second connecting portion is a cylindrical surface .
33. An air conditioner, comprising the pipeline device according to any one of claims 1-26.

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