Pipeline assembly and air conditioning system

Abstract

The utility model relates to a pipeline assembly and an air conditioning system.The pipeline assembly comprises a mounting sleeve and a main pipe, the mounting sleeve is welded to the outer wall of the main pipe and used for mounting a temperature sensing bulb, the main pipe is made of stainless steel, and the space between the mounting sleeve and the outer wall of the main pipe is filled with welding flux to form a welding part; when the mounting sleeve and the main pipe are in line welding, the length of the welding part is defined as L1, the length of the mounting sleeve is defined as L2 in the length direction of the mounting sleeve, and L1 is larger than or equal to 30% L2 and smaller than or equal to L2; when the mounting sleeve is welded with the surface of the main pipe, the total area of a welding surface, which is adaptive to the main pipe and can be welded, of the mounting sleeve is defined as S1, the actual welding area, which is in contact with the main pipe, of the mounting sleeve is defined as S2, the area of the outer wall surface of the mounting sleeve is defined as S3, and S2 is greater than or equal to 10% S1 and less than or equal to S1 and less than or equal to 50% S3. The pipeline assembly is low in cost, and heat can be well transferred between the mounting sleeve and the main pipe.

Description

Technical Field

[0001] The present application relates to the technical field of air-conditioning systems, and in particular to a pipeline assembly and an air-conditioning system. Background Art

[0002] In the air-conditioning system, a temperature sensing package is used to detect the temperature of the refrigerant when it flows through the main pipe to ensure that the compressor and other equipment in the air-conditioning system can operate normally. The installation sleeve is usually welded to the outer wall of the main pipe, and the temperature sensing package is usually installed on the main pipe through the installation sleeve.

[0003] In some air-conditioning systems, in order to reduce costs, stainless steel is used to make the main pipe. However, due to the low thermal conductivity of stainless steel, the thermal conductivity between the main pipe and the installation sleeve is poor, which may make it impossible to accurately or timely detect the temperature of the refrigerant flowing through the main pipe, thereby failing to ensure the safe operation of equipment such as the compressor. How to ensure good thermal conductivity between the main pipe and the installation sleeve while reducing the cost of stainless steel main pipes is a technical problem to be solved. Utility Model Content

[0004] Based on this, it is necessary to provide a pipeline assembly and an air conditioning system with low cost and good thermal conductivity between the main pipe and the installation sleeve.

[0005] A pipeline component comprises an installation sleeve and a main pipe, wherein the installation sleeve is welded to the outer wall of the main pipe and is used to install a temperature sensing package, and is characterized in that the main pipe is made of stainless steel, and solder is filled between the installation sleeve and the outer wall of the main pipe to form a welding portion; when the installation sleeve and the main pipe are linearly welded, along the length direction of the installation sleeve, the length of the welding portion is defined as L1, and the length of the installation sleeve is defined as L2, wherein 30% L2≤L1≤L2; when the installation sleeve is surface welded to the main pipe, the overall area of ​​the welding surface that is compatible with the main pipe and can be welded is defined as S1, the actual welding area of ​​the installation sleeve in contact with the main pipe is S2, and the area of ​​the outer wall surface of the installation sleeve is S3, wherein 10% S1≤S2≤S1≤50% S3.

[0006] In one embodiment, the mounting sleeve is made of stainless steel or copper.

[0007] In one embodiment, the solder is a copper-based solder.

[0008] In one embodiment, the wall thickness of the installation sleeve is D1, and 0.1 mm≤D1≤1.2 mm.

[0009] In one embodiment, the wall thickness of the main pipe is D2, 0.2 mm≤D2≤2.5 mm.

[0010] In one embodiment, the height of the welding portion is H, and H≤1 mm.

[0011] In one embodiment, when L1<L2, the welding portion extends from one end of the mounting sleeve toward the other end thereof along the length direction of the mounting sleeve; or, along the length direction of the mounting sleeve, the welding portion is disposed near the middle of the mounting sleeve.

[0012] In one embodiment, when L1<L2, the welding portion includes a plurality of sub-welding portions, and the plurality of sub-welding portions are spaced apart along the length direction of the installation sleeve.

[0013] In one embodiment, the installation sleeve and the main pipe are both configured as round pipes or flat pipes; or, the main pipe is configured as a round pipe, and one side wall of the installation sleeve is configured as an arc surface that matches the shape of the outer wall of the main pipe; or, the installation sleeve and the main pipe are both configured as square pipes.

[0014] An air conditioning system comprises the pipeline assembly described in any one of the above embodiments.

[0015] Compared with the prior art, the pipe assembly and air conditioning system provided by the present application are conducive to reducing costs by setting the main pipe to be made of stainless steel. In addition, by setting 30% L2≤L1≤L2, it is conducive to increasing the heat conduction area between the main pipe and the installation sleeve, thereby facilitating good heat transfer between the main pipe and the installation sleeve. In addition, it is also conducive to improving the welding strength between the installation sleeve and the main pipe. Alternatively, by setting 10% S1≤S2≤S1≤50% S3, it is conducive to ensuring good heat transfer between the main pipe and the installation sleeve, and it is also convenient to process the main pipe and the installation sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the conventional technology, the drawings required for use in the embodiments or the conventional technology descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 An axonometric view of the pipeline assembly of Example 1 provided in the present application;

[0018] Figure 2 for Figure 1 a side view of the piping assembly shown;

[0019] Figure 3 for Figure 2 Sectional view at AA;

[0020] Figure 4 for Figure 3 An enlarged schematic diagram of one embodiment of the pipeline assembly shown at B;

[0021] Figure 5 for Figure 3 An enlarged schematic diagram of another embodiment of the pipeline assembly shown at B;

[0022] Figure 6 for Figure 3 An enlarged schematic diagram of another embodiment of the pipeline assembly shown at B;

[0023] Figure 7 for Figure 3 An enlarged schematic diagram at C;

[0024] Figure 8 for Figure 3 An enlarged schematic diagram at D;

[0025] Fig. 9 An axonometric view of the pipeline assembly of the second embodiment provided in the present application;

[0026] Fig.10 This is a schematic diagram of the structure of the installation sleeve in the second embodiment provided in the present application.

[0027] Figure numerals: 100, pipeline assembly; 10, installation sleeve; 11, arc surface; 20, main pipe; 21, main body section; 22, necking section; 23, first limiting step; 30, welding part; 31, sub-welding part; 40, transition sleeve; 41, main pipe section; 42, expansion section; 43, second limiting step; 50, connecting pipe; 51, first connecting pipe section; 52, second connecting pipe section. DETAILED DESCRIPTION

[0028] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0029] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it may be directly on the other component or there may also be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be a central component at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the specification of this application are for illustrative purposes only and do not represent the only implementation method.

[0030] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0031] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first feature is directly in contact with the second feature, or the first feature and the second feature are indirectly in contact through an intermediate medium. Moreover, a first feature being “above”, “above” or “above” a 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. A first feature being “below”, “below” or “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0032] Unless otherwise defined, all technical and scientific terms used in the specification of this application have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in the specification of this application includes any and all combinations of one or more related listed items.

[0033] See also Figure 1 The present application provides a pipeline assembly 100. The pipeline assembly 100 includes a mounting sleeve 10 and a main pipe 20. The mounting sleeve 10 is welded to the outer wall of the main pipe 20 and is used to mount a temperature sensing package. The main pipe 20 is made of stainless steel. Solder is filled between the mounting sleeve 10 and the main pipe 20 to form a welding portion. There are two arrangements of the welding portion.

[0034] Embodiment 1

[0035] See also Figure 2 , Figure 3 and Figure 4 The installation sleeve 10 and the main pipe 20 are linearly welded. Along the length direction of the installation sleeve 10, the length of the welding portion 30 is defined as L1, and the length of the installation sleeve 10 is defined as L2, wherein 30% L2≤L1≤L2.

[0036] It should be noted that the line welding between the mounting sleeve 10 and the main pipe 20 means that the outer wall of the mounting sleeve 10 and the outer wall of the main pipe 20 can form a line contact, and the solder is partially or completely filled at the position of the line contact to form a welding portion 30 in the form of a weld. It can be understood that along the length direction of the mounting sleeve 10, when the line contact position between the mounting sleeve 10 and the main pipe 20 is all used to fill the solder, the length L1 of the welding portion 30 is the maximum and equal to L2. In addition, the larger L1 is, the larger the heat conduction area between the main pipe 20 and the mounting sleeve 10 is, which is more conducive to the rapid heat transfer between the main pipe 20 and the mounting sleeve 10. The larger L1 is, the more conducive it is to improve the welding strength between the mounting sleeve 10 and the main pipe 20. For example, L1=30%L2, L1=40%L2, L1=50%L2, L1=L2, etc. can be taken. Among them, 10mm≤L2≤20mm.

[0037] Optionally, in one embodiment, the installation sleeve 10 and the main pipe 20 are both configured as round pipes. In this way, the outer wall of the installation sleeve 10 and the outer wall of the main pipe 20 can form a line contact, so that solder can be filled at the position of the line contact to form a welding portion.

[0038] Alternatively, in another embodiment, the installation sleeve 10 and the main pipe 20 are both configured as flat pipes, so that the outer wall of the installation sleeve 10 and the outer wall of the main pipe 20 can also form a line contact, so that solder can be filled at the position of the line contact to form a welding portion.

[0039] See also Figure 4 and Figure 5 When L1<L2, that is, when a portion of the linear contact position between the mounting sleeve 10 and the main pipe 20 along the length direction of the mounting sleeve 10 is used to fill solder to form the welding portion 30, the welding portion 30 can be configured in the form of a whole section extension.

[0040] Optionally, in one embodiment, if Figure 4 As shown, along the length direction of the installation sleeve 10, the welding portion 30 extends from one end of the installation sleeve 10 toward the other end thereof. That is, one end of the installation sleeve 10 is welded to the main pipe 20.

[0041] Or, in another embodiment, Figure 5 As shown, the welding portion 30 is arranged near the middle position of the installation sleeve 10. That is, the middle position between the two ends of the installation sleeve 10 and the main pipe 20 are welded.

[0042] See also Figure 6When L1<L2, that is, when a portion of the linear contact position between the installation sleeve 10 and the main pipe 20 along the length direction of the installation sleeve 10 is used to fill the solder to form the welding portion 30, the welding portion 30 can also be configured in a segmented extension form. Specifically, the welding portion 30 includes multiple segments of welding portions 31, and the multiple segments of welding portions 31 are spaced apart along the length direction of the installation sleeve 10. In this way, the installation sleeve 10 is subjected to more uniform force at each position along the length direction.

[0043] Furthermore, the multi-section welding portions 31 are evenly spaced apart along the length direction of the installation sleeve 10 .

[0044] Embodiment 2

[0045] See also Fig. 9 When the installation sleeve 10 and the main pipe 20 are welded, the total area of ​​the welding surface that the installation sleeve 10 and the main pipe 20 are adapted to be welded is defined as S1, the actual welding area of ​​the installation sleeve 10 in contact with the main pipe 20 is S2, and the area of ​​the outer wall surface of the installation sleeve 10 is S3, wherein 10% S1≤S2≤S1≤50% S3.

[0046] It should be noted that the surface welding of the installation sleeve 10 and the main pipe 20 means that the outer walls of the installation sleeve 10 and the main pipe 20 can be adapted to each other to form a surface contact. The surface used to form the surface contact is the welding surface. The welding surface of the installation sleeve 10 and the welding surface of the main pipe 20 is partially or completely filled with solder to form a welding portion 30 distributed in a sheet shape. It can be understood that in order to ensure that the main pipe 20 and the installation sleeve 10 can be well heat-transferred, it is necessary to have a sufficient heat conduction area between the main pipe 20 and the installation sleeve 10, that is, it is necessary that the welding area S2 of the actual installation sleeve 10 and the main pipe 20 is large enough. However, since the main pipe 20 and the installation sleeve 10 are both tubular structures, the larger the overall area S1 of the welding surface that the installation sleeve 10 and the main pipe 20 can be welded, the greater the processing difficulty of the installation sleeve 10 and the main pipe 20. Therefore, by setting 10% S1≤S2≤S1≤50% S3, it is beneficial to improve the thermal conductivity between the main pipe 20 and the installation sleeve 10, and it is also convenient to process the main pipe 20 and the installation sleeve 10. For example, S1=10% S2, S1=15% S2, etc.

[0047] Optionally, in one embodiment, if Fig.10 As shown, the main pipe 20 is configured as a round pipe, and one side wall of the installation sleeve 10 is configured as an arc surface 11 that matches the shape of the outer wall of the main pipe 20. In this way, the installation sleeve 10 is configured as a special-shaped pipe, and the arc surface 11 of the special-shaped pipe is used to fit with the outer wall of the main pipe 20 to form a surface contact.

[0048] Alternatively, in another embodiment, the installation sleeve 10 and the main pipe 20 are both configured as square pipes. In this way, the outer wall of any side of the installation sleeve 10 can be attached to the outer wall of any side of the main pipe 20 to form a surface contact.

[0049] See also Figure 5 , the height of the welding part is H, and H≤1mm. It can be understood that the surface tension of the solder after melting is very small, so the liquid solder will flow along the surface of the mounting sleeve 10 and the surface of the main pipe 20 so that the solder and the surface of the mounting sleeve 10 and the surface of the main pipe 20 are fully contacted and welded. If the height of the welding part H is too large, it will cause the liquid solder to be difficult to fill the space between the mounting sleeve 10 and the main pipe 20 when flowing, resulting in uneven welding of the mounting sleeve 10 and the main pipe 20, and then causing the mounting sleeve 10 and the main pipe 20 to be unable to be firmly welded. For example, the value of H can be selected as 1mm, 0.9mm, 0.85mm or 0.8mm, etc., which can be set according to actual needs and are not listed here one by one.

[0050] Optionally, the material of the mounting sleeve 10 is stainless steel, which is helpful to further reduce the cost.

[0051] Optionally, the material of the installation sleeve 10 is copper. Since copper has better thermal conductivity, using copper to make the installation sleeve 10 is beneficial to further improve the thermal conductivity between the main pipe 20 and the installation sleeve 10.

[0052] The solder is configured as a copper-based solder. It is understandable that, since copper has better thermal conductivity, the use of a copper-based solder is beneficial to further improve the thermal conductivity between the main pipe 20 and the mounting sleeve 10. For example, the solder can be configured as tin bronze. The welding method between the main pipe 20 and the mounting sleeve 10 can be brazing.

[0053] like Figure 3 As shown, the wall thickness of the installation sleeve 10 is D1, and 0.1mm≤D1≤1.2mm. It can be understood that the larger D1 is, the greater the heat transfer loss between the main pipe 20 and the installation sleeve 10 is. However, if D1 is too small, the structural strength of the installation sleeve 10 will be low. Therefore, setting 0.1mm≤D1≤1.2mm is beneficial to reduce the heat transfer loss between the main pipe 20 and the installation sleeve 10, and is also beneficial to ensure that the installation sleeve 10 has sufficient structural strength. For example, the value of D1 can be 0.1mm, 1.1mm, 1.15mm, 1.2mm, etc., which can be set according to actual needs and are not listed here one by one.

[0054] like Figure 3As shown, the wall thickness of the main pipe 20 is D2, and 0.2mm≤D2≤2.5mm. Similarly, the larger D2 is, the greater the heat transfer loss between the main pipe 20 and the mounting sleeve 10 is. However, if D2 is too small, the structural strength of the main pipe 20 will be low. Therefore, setting 0.2mm≤D2≤2.5mm is conducive to reducing the heat transfer loss between the main pipe 20 and the mounting sleeve 10, and is also conducive to ensuring that the main pipe 20 has sufficient structural strength. For example, the value of D2 can be 0.2mm, 1.9mm, 1.95mm, 2mm, 2.5mm, etc., which can be set according to actual needs and are not listed here one by one.

[0055] See also Figure 1 The pipeline assembly 100 also includes two adapter sleeves 40, which are respectively welded to the two ends of the main pipe 20 and used to connect the main pipe 20 to other pipelines in the air-conditioning system, wherein the material of the adapter sleeve 40 is copper.

[0056] In one embodiment, if Figure 3 and Figure 7 As shown, the main pipe 20 includes a main section 21 and a constricted section 22, and a first limiting step 23 is formed at the connection between the main section 21 and the constricted section 22. The adapter sleeve 40 is sleeved on the constricted section 22 and stopped at the first limiting step 23.

[0057] In another embodiment, if Figure 3 and Figure 8 As shown, the adapter sleeve 40 includes a main pipe section 41 and a flared section 42 , which are connected to form a second limiting step 43 , and the main pipe 20 is inserted into the flared section 42 and stopped at the second limiting step 43 .

[0058] like Figure 1 and Figure 2 As shown, the pipeline assembly 100 also includes a plurality of connecting pipes 50, which are respectively connected to the side walls of the main pipe 20 and are used to connect the main pipe 20 with other pipes in the air conditioning system. The connecting pipe 50 is made of copper. Along the circumference of the main pipe 20, the installation sleeve 10 and the connecting pipe 50 are staggered to avoid interference between the installation sleeve 10 and the connecting pipe 50.

[0059] Furthermore, if Figure 1 As shown, the pipe 50 includes a first pipe section 51 and a second pipe section 52 which are arranged at an angle, wherein the second pipe section 52 is connected to the main pipe 20 through the first pipe section 51 .

[0060] The present application also provides an air conditioning system, which includes the pipeline assembly 100 described in any one of the above embodiments.

[0061] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0062] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made 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 patent protection of the present application shall be subject to the attached claims.

Claims

1. A pipeline assembly, comprising a mounting sleeve (10) and a main pipe (20), wherein the mounting sleeve (10) is welded to the outer wall of the main pipe (20) and is used to mount a temperature sensing package, characterized in that: The main pipe (20) is made of stainless steel, and solder is filled between the installation sleeve (10) and the outer wall of the main pipe (20) to form a welding portion (30); When the installation sleeve (10) and the main pipe (20) are linearly welded, along the length direction of the installation sleeve (10), the length of the welding portion (30) is defined as L1, and the length of the installation sleeve (10) is defined as L2, wherein 30% L2≤L1≤L2; When the installation sleeve (10) and the main pipe (20) are welded, the total area of ​​the welding surface of the installation sleeve (10) and the main pipe (20) that are compatible and weldable is defined as S1, the actual welding area of ​​the installation sleeve (10) and the main pipe (20) in contact is S2, and the area of ​​the outer wall surface of the installation sleeve (10) is S3, wherein 10% S1≤S2≤S1≤50% S3.

2. The pipeline assembly according to claim 1, characterized in that: The material of the installation sleeve (10) is stainless steel or copper.

3. The pipeline assembly according to claim 1, characterized in that: The solder is configured as a copper-based solder.

4. The pipeline assembly according to claim 1, characterized in that: The wall thickness of the installation sleeve (10) is D1, and 0.1 mm≤D1≤1.2 mm.

5. The pipeline assembly according to claim 1, characterized in that: The wall thickness of the main pipe (20) is D2, 0.2 mm ≤ D2 ≤ 2.5 mm.

6. The pipeline assembly according to claim 1, characterized in that: The height of the welding portion (30) is H, and H≤1 mm.

7. The pipeline assembly according to any one of claims 1 to 6, characterized in that: When L1<L2, along the length direction of the installation sleeve (10), the welding portion (30) extends from one end of the installation sleeve (10) toward the other end thereof; Alternatively, along the length direction of the installation sleeve (10), the welding portion (30) is arranged close to the middle of the installation sleeve (10).

8. The pipeline assembly according to any one of claims 1 to 6, characterized in that: When L1<L2, the welding portion (30) comprises a plurality of sub-welding portions (31), and the plurality of sub-welding portions (31) are spaced apart and distributed along the length direction of the installation sleeve (10).

9. The pipeline assembly according to any one of claims 1 to 6, characterized in that: The installation sleeve (10) and the main pipe (20) are both configured as round pipes or flat pipes; Alternatively, the main pipe (20) is configured as a round pipe, and a side wall surface of the installation sleeve (10) is configured as an arc surface that matches the shape of the outer wall surface of the main pipe (20); Alternatively, the installation sleeve (10) and the main pipe (20) are both configured as square pipes.

10. An air conditioning system, characterized in that: The air conditioning system comprises a pipe assembly according to any one of claims 1 to 9.

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