Pipe assembly, heat exchanger, air conditioner indoor unit and air conditioner

Abstract

The utility model discloses a kind of piping assembly, heat exchanger, air conditioner indoor unit and air conditioner, the piping assembly includes: piping, piping includes main body section and multiple distribution sections, main body section is alloy steel piece, distribution section is connected with main body section and the heat exchange tube of heat exchanger respectively, the yield strength of main body section is a, the yield strength of 304L stainless steel is b, the yield strength of red copper is c, and satisfy: c According to the piping assembly of the utility model, the piping includes main body section and multiple distribution sections, the main body section is alloy steel piece, the distribution section is connected with the main body section and the heat exchange tube of heat exchanger respectively, the yield strength of main body section is a, the yield strength of 304L stainless steel is b, the yield strength of red copper is c, and satisfy: c Thus, while ensuring that the main body section has high structural strength, the bending requirements of the installation space are met, and the cost of the alloy steel is lower than that of copper, effectively reducing the cost of the piping assembly and the heat exchanger using the piping assembly.

Description

Technical Field

[0001] This utility model relates to the field of air handling equipment technology, and in particular to a piping assembly, heat exchanger, indoor air conditioning unit and air conditioner. Background Technology

[0002] Air conditioner piping, serving as the internal refrigerant circulation channel, needs to connect to the heat exchanger tubes. Traditional piping uses copper tubing, which ensures reliable connection between the piping and heat exchanger tubes. Copper tubing's excellent ductility allows it to adapt to bending requirements in installation space. However, using copper tubing requires a large amount of copper, and the high price of copper in recent years has led the air conditioner industry to continuously improve the materials and structure of piping to adapt to rising copper prices.

[0003] Currently, existing technologies use aluminum to replace copper in the manufacture of piping. Although aluminum tubes can be bent through processes such as annealing or filling with lubricating media, aluminum is not pressure resistant enough, and electrochemical corrosion is very likely to occur between aluminum tubes and copper heat exchange tubes. Many manufacturing processes are needed to eliminate the defects of aluminum, which leads to increased costs.

[0004] Existing technologies also use 304L stainless steel to replace copper in the manufacture of stainless steel pipes to reduce electrochemical corrosion between the pipes and copper pipes. However, due to the poor bending performance of stainless steel pipes, they are prone to cracking when bent during the installation of air conditioners, which affects the performance of the stainless steel pipes. Utility Model Content

[0005] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a piping assembly that, while ensuring high structural strength in the main body, adapts to the bending requirements of the installation space, and effectively reduces the cost of the piping assembly.

[0006] This utility model also proposes a heat exchanger, which includes the above-mentioned piping assembly.

[0007] This utility model also proposes an indoor air conditioning unit, which includes the heat exchanger described above.

[0008] This utility model also proposes an air conditioner, which includes the above-mentioned indoor air conditioner unit.

[0009] According to an embodiment of the present utility model, a piping assembly is used in a heat exchanger. The piping assembly includes: piping, the piping including a main section and a plurality of distribution sections. The main section is an alloy steel component. The distribution sections are respectively connected to the main section and the heat exchange tubes of the heat exchanger. The yield strength of the main section is a, the yield strength of 304L stainless steel is b, and the yield strength of copper is c, and the following condition is met: c < a < b.

[0010] According to an embodiment of the present invention, the piping assembly includes a main section and multiple distribution sections. The main section is made of alloy steel, and the distribution sections are respectively connected to the main section and the heat exchange tubes of the heat exchanger. The yield strength of the main section is a, the yield strength of 304L stainless steel is b, and the yield strength of copper is c, and the condition c < a < b is satisfied. This ensures that the main section has high structural strength while adapting to the bending requirements of the installation space. Moreover, the cost of alloy steel is lower than that of copper, thereby effectively reducing the cost of the piping assembly and the heat exchanger using the piping assembly.

[0011] In some embodiments of this utility model, the main body segment is an austenitic stainless steel component.

[0012] In some embodiments of this utility model, the inner surface of the main body segment is smooth, and the outer surface of the main body segment is smooth.

[0013] In some embodiments of this utility model, the piping assembly further includes a reinforcing member, and the main body segment includes: a straight segment, at least two straight segments; and a bent segment, which is located between any two adjacent straight segments and connected to the adjacent straight segments, and the reinforcing member is at least sleeved outside the bent portion.

[0014] In some embodiments of this utility model, the reinforcing member is a spring.

[0015] In some embodiments of this utility model, it further includes: a distributor, the distributor being used to connect multiple distribution segments and the main body segment connection.

[0016] In some embodiments of this utility model, a connecting component is further included. The connecting component is located between the distributor and the main body segment and includes: a first segment; a second segment, the second segment including a first sub-segment, a transition segment, and a second sub-segment arranged sequentially along the length direction of the second segment. The transition segment is connected to the first sub-segment and the second sub-segment respectively. The first sub-segment is sleeved outside the first segment. The diameter of the first sub-segment is larger than the diameter of the second sub-segment. One end of the first segment along its length direction abuts against the inner wall surface of the transition segment. The first segment is welded to the transition segment and the first sub-segment respectively. One of the first segment and the second sub-segment is connected to the distributor, and the other is connected to the main body segment.

[0017] In some embodiments of this utility model, the end of the first sub-segment that is away from the transition segment is inclined in a direction away from the central axis of the first sub-segment.

[0018] In some embodiments of this utility model, the heat exchange tube is made of aluminum, the distribution section is made of aluminum, and the distributor is made of aluminum; or, the heat exchange tube is made of copper, the distribution section is made of copper, and the distributor is made of copper; or, the heat exchange tube is made of copper, the distribution section is made of copper, and the distributor is made of brass.

[0019] In some embodiments of this utility model, the piping is multiple and includes a first pipe and a second pipe, wherein the diameter of the first pipe is smaller than the diameter of the second pipe; and / or, the main body section of the second pipe is an alloy steel component; and / or, the main body section of the first pipe is an alloy steel component.

[0020] In some embodiments of this utility model, the diameter of the first tube is 4mm-8mm; and / or, the diameter of the second tube is 7mm-11mm.

[0021] In some embodiments of this utility model, it further includes: a heat insulation part, which covers the outer wall surface of the main body segment.

[0022] In some embodiments of this utility model, the yield strength of the main body segment is a, where a ≤ 250 MPa; and / or, the tensile strength of the main body segment is d, where 300 MPa ≤ d ≤ 540 MPa.

[0023] In some embodiments of this utility model, the piping further includes a connector connected to the end of the main body section away from the distribution section; and / or, the connector is a brass piece, and the connector is welded to the main body section.

[0024] A heat exchanger according to an embodiment of the present invention includes a heat exchange tube; the aforementioned piping assembly has a distribution section whose end facing away from the main body section is connected to the heat exchange tube.

[0025] According to the heat exchanger of this utility model embodiment, a piping assembly is provided. The piping includes a main section and multiple distribution sections. The main section is made of alloy steel. The distribution sections are respectively connected to the main section and the heat exchange tubes of the heat exchanger. The yield strength of the main section is a, the yield strength of 304L stainless steel is b, and the yield strength of copper is c, and the condition c < a < b is satisfied. This ensures that the main section has high structural strength while adapting to the bending requirements of the installation space. Moreover, the cost of alloy steel is lower than that of copper, thereby effectively reducing the cost of the heat exchanger.

[0026] The indoor unit of the air conditioner according to an embodiment of the present invention includes the heat exchanger described above.

[0027] According to the embodiment of this utility model, the indoor unit of the air conditioner is equipped with a heat exchanger, and the piping includes a main section and multiple distribution sections. The main section is made of alloy steel, and the distribution sections are respectively connected to the heat exchange tubes of the heat exchanger of the main section and the heat exchanger of the indoor unit. The yield strength of the main section is a, the yield strength of 304L stainless steel is b, and the yield strength of copper is c, and the condition c < a < b is satisfied. This ensures that the main section has high structural strength while adapting to the bending requirements of the installation space. Moreover, the cost of alloy steel is lower than that of copper, thereby effectively reducing the cost of the indoor unit of the air conditioner.

[0028] The air conditioner according to an embodiment of the present invention includes the above-described indoor air conditioner unit.

[0029] According to an embodiment of this utility model, an air conditioner is provided with an indoor unit. The piping includes a main section and multiple distribution sections. The main section is made of alloy steel. The distribution sections are respectively connected to the heat exchange tubes of the heat exchanger of the main section and the indoor unit. The yield strength of the main section is a, the yield strength of 304L stainless steel is b, and the yield strength of copper is c, and the condition c < a < b is satisfied. This ensures that the main section has high structural strength while adapting to the bending requirements of the installation space. Moreover, the cost of alloy steel is lower than that of copper, thereby effectively reducing the cost of the air conditioner.

[0030] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0031] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0032] Figure 1 This is a structural diagram of a heat exchanger according to an embodiment of the present utility model;

[0033] Figure 2 yes Figure 1 Enlarged view of point A in the middle;

[0034] Figure 3 This is a schematic diagram of the first tube according to an embodiment of the present utility model;

[0035] Figure 4 This is a front view of the first tube according to an embodiment of the present utility model;

[0036] Figure 5 This is a side view of the first tube according to an embodiment of the present utility model;

[0037] Figure 6 This is a side view of the first tube according to an embodiment of the present utility model;

[0038] Figure 7This is a front view of the first tube according to another embodiment of the present invention;

[0039] Figure 8 This is a side view of the first tube according to another embodiment of the present invention;

[0040] Figure 9 This is a schematic diagram of the second tube according to an embodiment of the present utility model;

[0041] Figure 10 This is a front view of the second tube according to an embodiment of the present utility model;

[0042] Figure 11 This is a side view of the second tube according to an embodiment of the present utility model;

[0043] Figure 12 This is a side view of the second tube according to an embodiment of the present utility model;

[0044] Figure 13 This is a cross-sectional schematic diagram of the connecting component according to an embodiment of the present utility model;

[0045] Figure 14 This is a cross-sectional schematic diagram of a connecting component according to another embodiment of the present invention.

[0046] Figure label:

[0047] 1000. Heat exchanger;

[0048] 100. Piping assemblies;

[0049] 1. Piping; 11. Main section; 111. Straight section; 112. Bend section; 12. Distribution section;

[0050] 2. Reinforcing components;

[0051] 3. Distributor;

[0052] 4. Connecting components; 41. First segment; 42. Second segment; 421. First sub-segment; 422. Transition segment; 423. Second sub-segment;

[0053] 5. Insulation section;

[0054] 101. First pipe; 1011. First connector;

[0055] 102. Second pipe; 1021. Second connector;

[0056] 200. Heat exchange tube. Detailed Implementation

[0057] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0058] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0059] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0060] The piping assembly 100 according to an embodiment of the present invention is described below with reference to the accompanying drawings.

[0061] like Figures 1-2 As shown, the piping assembly 100 according to an embodiment of the present invention is used in a heat exchanger 1000, and the piping assembly 100 includes piping 1. The piping 1 includes a main section 11 and a plurality of distribution sections 12, and the distribution sections 12 are respectively connected to the main section 11 and the heat exchange tubes 200 of the heat exchanger 1000.

[0062] Figures 3-12As shown, it can be understood that the cold medium can enter the main body section 11 from the end away from the distribution section 12, and be transported through the main body section 11 to multiple distribution sections 12. Finally, it is transported by multiple distribution sections 12 to the heat exchange tube 200 of the heat exchanger 1000. The cold medium in the heat exchange tube 200 can also be transported through multiple distribution sections 12 to the main body section 11 and then transported out through the main body section 11, thereby realizing that the piping 1 serves as a cold medium circulation channel.

[0063] Specifically, when the piping assembly 100 is applied to the heat exchanger 1000 of the indoor unit of the air conditioner, the distribution section 12 is connected to the main body section 11 and the heat exchange tube 200 of the heat exchanger 1000 of the indoor unit of the air conditioner, respectively. The end of the main body section 11 away from the distribution section 12 can be connected to the compressor, thereby realizing the connection between the compressor and the heat exchange tube 200 through the piping 1. The refrigerant can be transported from the compressor to the heat exchange tube 200 through the piping 1 or from the heat exchange tube 200 to the compressor through the piping 1; or, the end of the main body section 11 away from the distribution section 12 can be connected to the outdoor unit of the air conditioner, thereby realizing the connection between the outdoor unit of the air conditioner and the heat exchange tube 200 through the piping 1. The refrigerant can be transported from the outdoor unit of the air conditioner to the heat exchange tube 200 through the piping 1 or from the heat exchange tube 200 to the outdoor unit of the air conditioner through the piping 1.

[0064] The main body section 11 is made of alloy steel. The yield strength of the main body section 11 is 'a', the yield strength of 304L stainless steel is 'b', and the yield strength of copper is 'c', satisfying the condition: c < a < b. Therefore, by limiting the yield strength of the main body section 11 to between the yield strengths of 304L stainless steel and copper, the main body section 11 can withstand a certain degree of deformation during processing (avoiding cracking during bending) without excessive springback or severe work hardening due to excessive strength. This ensures that the main body section 11 has high structural strength while adapting to the bending requirements of the installation space. Furthermore, the cost of alloy steel is lower than that of copper, effectively reducing the cost of the piping assembly 100 and the heat exchanger 1000 using this piping assembly 100.

[0065] Furthermore, the material used for the distribution section 12 is usually the same as that used for the heat exchange tube 200. When the heat exchange tube 200 is made of copper, the distribution section 12 is also made of copper. In this application, the main body section 11 made of alloy steel is welded to the distribution section 12 made of copper. This avoids the situation where copper and aluminum parts are prone to forming brittle intermetallic compounds at high temperatures, which would significantly reduce the strength of the welded connection or even cause cracking. This effectively ensures the connection strength between the main body section 11 and the distribution tube 1, thereby ensuring the connection strength between the piping 1 and the heat exchange tube 200 and improving the reliability of the piping assembly 100.

[0066] According to the piping assembly 100 of this utility model embodiment, the piping 1 includes a main section 11 and a plurality of distribution sections 12. The main section 11 is an alloy steel component. The distribution sections 12 are respectively connected to the main section 11 and the heat exchange tube 200 of the heat exchanger 1000. The yield strength of the main section 11 is a, the yield strength of 304L stainless steel is b, and the yield strength of copper is c, and the condition c < a < b is satisfied. Thus, while ensuring that the main section 11 has high structural strength, it can adapt to the bending requirements of the installation space. Moreover, the cost of alloy steel is lower than that of copper, thereby effectively reducing the cost of the piping assembly 100 and the heat exchanger 1000 using the piping assembly 100.

[0067] In some embodiments of this utility model, the main body segment 11 is an austenitic stainless steel component. It is understood that austenitic stainless steel, with a yield strength between that of 304L stainless steel and that of copper, possesses a certain strength, as well as high toughness and plasticity, thereby ensuring that the main body segment 11 has high structural strength while adapting to the bending requirements of the installation space.

[0068] In some embodiments of this utility model, the yield strength of the main body segment 11 is a, the yield strength of 304L stainless steel is b, and the yield strength of copper is c, and the condition c < a < b is satisfied. This can be understood as follows: the yield strength of the main body segment 11 made of alloy steel is a, the yield strength of the main body segment made of 304L stainless steel is b, and the yield strength of the main body segment made of copper is c. The structures of the main body segments made of the above different materials are basically the same. For example, the parameters such as outer diameter, inner diameter, and wall thickness are basically the same. In this case, c < a < b.

[0069] For example, in the austenitic stainless steel of this application, the mass content of Cu is higher than 0.1%, the mass content of Mn is higher than 0.05%, the mass content of Cr is 14%-25%, and the mass content of C is lower than 0.025%, as shown in the table below. It can be seen that the yield strength of austenitic stainless steel is between the yield strength of 304L stainless steel and the yield strength of copper, and the tensile strength of austenitic stainless steel is between the tensile strength of 304L stainless steel and the tensile strength of copper. Thus, while ensuring that the main body section 11 has high structural strength, it can also meet the bending requirements of the installation space.

[0070] The chemical composition of the main body segment 11 of the austenitic stainless steel of this application includes: C, Si, Mn, Cr, Ni, Mo, Cu, N, Al, Ti, and Fe. The weight percentage (%) of C, Si, Mn, Cr, Ni, Mo, Cu, N, Al, and Ti is as follows: C: 0.005-0.025, Si: 0.1-0.75, Mn: 0.2-1.7, Cr: 14-25, Ni: 8.5-11, Mo: 0.005-0.50, Cu: 0.1-3.5, N: 0.005-0.03, Al: 0.005-0.02, Ti: 0.002-0.1, with the remainder being Fe and necessary impurities.

[0071] Yield strength / MPa 400 150 83 Tensile strength / MPa 754 440 252

[0072] In some embodiments of this utility model, the yield strength of the main body segment 11 is α, where α ≤ 250 MPa. Therefore, by limiting the yield strength of the main body segment 11 to less than or equal to 250 MPa, it is further ensured that the main body segment 11 can adapt to the bending requirements of the installation space.

[0073] In some embodiments of this utility model, the tensile strength of the main body segment 11 is d, where 300 MPa ≤ d ≤ 540 MPa. Therefore, by limiting the tensile strength of the main body segment 11, it is further ensured that the main body segment 11 has high structural strength while adapting to the bending requirements of the installation space, thus improving the reliability of the main body segment 11 and consequently improving the reliability of the piping assembly 100.

[0074] In some embodiments of this utility model, the tensile strength of the main body segment 11 is greater than that of copper, and the tensile strength of the main body segment 11 is less than that of 304L stainless steel, thereby ensuring that the main body segment 11 has high structural strength while adapting to the bending requirements of the installation space.

[0075] In some embodiments of this utility model, the inner surface of the main body segment 11 is smooth, and the outer surface of the main body segment 11 is smooth. It is understood that, since the yield strength of the main body segment 11 in this application is between the yield strength of 304L stainless steel and the yield strength of copper, the main body segment 11 can adapt to the bending requirements of the installation space. There is no need to install a corrugated pipe in the main body segment 11 to enhance its bending performance, thereby ensuring smooth flow of the refrigerant within the main body segment 11 and avoiding abnormal noise during the flow of the refrigerant within the main body segment 11, thus improving the reliability of the piping assembly 100.

[0076] In some embodiments of this utility model, such as Figure 2 and Figures 9-12As shown, the piping assembly 100 also includes a reinforcing member 2, and the main body section 11 includes a straight section 111 and a bent section 112. There are at least two straight sections 111, and the bent section 112 is located between any two adjacent straight sections 111 and connected to the adjacent straight section 111. The reinforcing member 2 is at least fitted outside the bent portion.

[0077] Understandably, in order to accommodate the bending requirements of the installation space, straight pipes of equal diameter will be bent to form a bend. There can be one or more bends. Both ends of the bend in the length direction are connected to the straight segment 111. Thus, by setting at least two straight segments 111, and the bend 112 located between any two adjacent straight segments 111 and connected to the adjacent straight segments 111, the structural strength of the main segment 11 is guaranteed while the bend 112 adapts to the bending requirements of the installation space.

[0078] Meanwhile, by having the reinforcing member 2 fitted at least outside the bend, the maximum bending angle of the bend section 112 can be limited during the installation of the piping assembly 100, so as to prevent the main body section 11 from bending during the installation process and further improve the reliability of the piping 1.

[0079] In some embodiments of this utility model, such as Figure 2 and Figures 9-12 As shown, the reinforcing member 2 is a spring. It can be understood that, due to the elasticity of the spring, it can provide a dynamic buffering effect during the bending of the main body section 11, reducing the impact force, and providing resistance after the main body section 11 bends beyond a certain limit, thereby preventing excessive deformation and further preventing the main body section 11 from bending during installation.

[0080] In some embodiments of this utility model, such as Figures 3-12 As shown, the piping assembly 100 also includes a distributor 3. The distributor 3 is used to connect multiple distribution sections 12 and the main body section 11. Thus, the refrigerant in the main body section 11 is supplied to the distributor 3, and after being distributed by the distributor 3, it is supplied to the multiple distribution sections 12; or, the refrigerant in the multiple distribution sections 12 is supplied to the distributor 3, and after being collected by the distributor 3, it is supplied to the main body section 11.

[0081] In one specific embodiment, such as Figure 9As shown, the bent segment 112 consists of two segments, and the straight segment 111 consists of three segments. One straight segment 111 is located between the two bent segments 112 and connected to both of them. The other two straight segments 111 are located on the opposite side of the two bent segments 112 and connected to the nearest bent segment 112. One end of the spring along its length is connected to the distributor 3. The spring is sleeved around the two bent segments 112, the straight segment 111 closest to the distributor 3, the straight segment 111 located between the two bent segments 112, and at least part of the straight segment 111 farthest from the distributor 3. The straight segment 111 closest to the distributor 3 is connected to the distributor 3, thereby fixing the spring. It should be noted that those skilled in the art, after reading the following technical solution, will obviously understand that this solution can be applied to technical solutions with three or more bent segments 112, which also falls within the protection scope of this utility model.

[0082] In some embodiments of this utility model, such as Figure 7 , Figure 8 , Figure 13 and Figure 14 As shown, the piping assembly 100 also includes a connecting assembly 4, which is located between the distributor 3 and the main body section 11 and includes a first section 41 and a second section 42. The second section 42 includes a first sub-segment 421, a transition section 422, and a second sub-segment 423 arranged sequentially along its length. The transition section 422 is connected to both the first sub-segment 421 and the second sub-segment 423. The first sub-segment 421 is fitted outside the first section 41, and its diameter is larger than that of the second sub-segment 423. One end of the first section 41 abuts against the inner wall of the transition section 422. The first section 41 is welded to both the transition section 422 and the first sub-segment 421. One of the first section 41 and the second sub-segment 423 is connected to the distributor 3, and the other is connected to the main body section 11.

[0083] Therefore, by fitting the first sub-segment 421 around the first segment 41, with one end of the first segment 41 abutting against the inner wall of the transition segment 422, and welding the first segment 41 to both the transition segment 422 and the first sub-segment 421, the welding strength of the first segment 41 and the second segment 42 is improved, thereby enhancing the connection reliability between the distributor 3 and the main body segment 11. Simultaneously, by having one end of the first segment 41 abut against the inner wall of the transition segment 422, the solder from the welding connection is effectively prevented from penetrating into the connecting assembly 4, thus avoiding solder contamination of the cooling medium in the distributor 3 or the piping 1, further improving the reliability of the piping assembly 100.

[0084] In some embodiments of this utility model, such as Figure 13 and Figure 14As shown, the end of the first sub-segment 421 that is away from the transition segment 422 is inclined in a direction away from the central axis of the sub-segment. This arrangement increases the solder volume between the end of the first sub-segment 421 away from the transition segment 422 and the first segment 41, thereby improving the connection strength between the first sub-segment 421 and the first segment 41, and further ensuring the connection reliability between the distributor 3 and the main body segment 11.

[0085] In some embodiments of this utility model, the heat exchange tube 200 of the heat exchanger 1000 is made of aluminum, the distribution section 12 is made of aluminum, and the distributor 3 is made of aluminum. It is understood that, since the distribution section 12 is welded to the heat exchange tube 200, the same material ensures the reliability of the connection between the distribution section 12 and the heat exchange tube 200. Similarly, since the distribution section 12 is welded to the distributor 3, the same material ensures the reliability of the connection between the distribution section 12 and the distributor 3.

[0086] Furthermore, such as Figures 3-6 and Figures 9-12 As shown, when the first segment 41 is connected to the distributor 3 and the second sub-segment 423 is connected to the main body segment 11, the first segment 41 can be formed as part of the distributor 3 and the first segment 41 is an aluminum part. The second segment 42 can be part of the main body segment 11 or an independent part. When the second segment 42 is an independent part, the second segment 42 is an aluminum part. Alternatively, when the first segment 41 is connected to the main body segment 11 and the second sub-segment 423 is connected to the distributor 3, the second segment 42 can be formed as part of the distributor 3 and the second segment 42 is an aluminum part. The first segment 41 can be part of the main body segment 11 or an independent part. When the first segment 41 is an independent part, the first segment 41 is an aluminum part.

[0087] In some embodiments of this utility model, the heat exchange tube 200 of the heat exchanger 1000 is made of copper, the distribution section 12 is made of copper, and the distributor 3 is made of copper. It is understood that since the distribution section 12 is welded to the heat exchange tube 200, the same material ensures the reliability of the connection between the distribution section 12 and the heat exchange tube 200. Similarly, since the distribution section 12 is welded to the distributor 3, the same material ensures the reliability of the connection between the distribution section 12 and the distributor 3.

[0088] Furthermore, such as Figures 3-6 and Figures 9-12As shown, when the first segment 41 is connected to the distributor 3 and the second sub-segment 423 is connected to the main body segment 11, the first segment 41 can be formed as part of the distributor 3 and the first segment 41 is made of copper. The second segment 42 can be part of the main body segment 11 or an independent part. When the second segment 42 is an independent part, the second segment 42 is made of copper. Alternatively, when the first segment 41 is connected to the main body segment 11 and the second sub-segment 423 is connected to the distributor 3, the second segment 42 can be formed as part of the distributor 3 and the second segment 42 is made of copper. The first segment 41 can be part of the main body segment 11 or an independent part. When the first segment 41 is an independent part, the first segment 41 is made of copper.

[0089] In some embodiments of this utility model, the heat exchange tube 200 of the heat exchanger 1000 is made of copper, the distribution section 12 is made of copper, and the distributor 3 is made of brass. It is understood that when the cold medium flowing in the piping 1 is liquid, using brass for the distributor 3 facilitates its processing and ensures its structural strength and flow distribution effect. Simultaneously, since the distribution section 12 is welded to the heat exchange tube 200, the identical materials ensure the reliability of the connection between them. Furthermore, the welded connection between the distribution section 12 and the distributor 3, with the copper component of the distribution section 12 and the brass component of the distributor 3, guarantees reliable connection.

[0090] Furthermore, such as Figure 7 and Figure 8 As shown, when the first segment 41 is connected to the distributor 3 and the second sub-segment 423 is connected to the main body segment 11, the first segment 41 can be formed as part of the distributor 3. The first segment 41 is a brass component. The second segment 42 can be part of the main body segment 11 or an independent component. When the second segment 42 is an independent component, it is a copper component. Thus, the second segment 42 of the copper component achieves an indirect connection between the first segment 41 of the brass component and the main body segment 11 of the alloy component, ensuring reliable connection. Alternatively, when the first segment 41 is connected to the main body segment 11 and the second sub-segment 423 is connected to the distributor 3, the second segment 42 can be formed as part of the distributor 3. The second segment 42 is a brass component. The first segment 41 can be part of the main body segment 11 or an independent component. When the first segment 41 is an independent component, it is a copper component. Thus, the first segment 41 of the copper component achieves an indirect connection between the second segment 42 of the brass component and the main body segment 11 of the alloy component, ensuring reliable connection.

[0091] In some embodiments of this utility model, such as Figure 1 and Figure 2As shown, piping 1 comprises multiple pipes, including a first pipe 101 and a second pipe 102, with the diameter of the first pipe 101 being smaller than the diameter of the second pipe 102. It is understood that when piping assembly 100 is applied to heat exchanger 1000, piping 1 is used to transport gaseous and liquid refrigerant. Since the density of liquid refrigerant is greater than that of gaseous refrigerant, at the same mass flow rate, the volume of liquid refrigerant is smaller than that of gaseous refrigerant. To ensure the flow rate of gaseous and liquid refrigerant transported by piping 1, multiple pipes 1 are configured, including a first pipe 101 and a second pipe 102. The diameter of the first pipe 101 is smaller than the diameter of the second pipe 102. Liquid refrigerant is transported through the smaller-diameter first pipe 101, and gaseous refrigerant is transported through the larger-diameter second pipe 102, ensuring the efficiency of refrigerant transport by piping 1 and improving the reliability of piping assembly 100.

[0092] Specifically, when the piping assembly 100 is applied to the heat exchanger 1000 of the indoor unit of the air conditioner, the distribution section 12 of the first pipe 101 is connected to the main section 11 and the heat exchange tube 200 of the heat exchanger 1000 of the indoor unit of the air conditioner, respectively. The end of the main section 11 of the first pipe 101 away from the distribution section 12 is connected to the heat exchanger of the outdoor unit of the air conditioner. The distribution section 12 of the second pipe 102 is connected to the main section 11 and the heat exchange tube 200 of the heat exchanger 1000 of the indoor unit of the air conditioner, respectively. The end of the main section 11 of the second pipe 102 away from the distribution section 12 is connected to the compressor. During cooling, the outdoor unit heat exchanger acts as a condenser, and the indoor unit heat exchanger 1000 acts as an evaporator. The liquid refrigerant in the condenser flows into the heat exchange tube 200 of the evaporator through the first pipe 101. The low-temperature, low-pressure liquid refrigerant in the heat exchange tube 200 absorbs heat and evaporates, transforming into gaseous refrigerant, which then flows into the compressor through the second pipe 102. During heating, the outdoor unit heat exchanger acts as an evaporator, and the indoor unit heat exchanger 1000 acts as a condenser. The compressor delivers high-temperature, high-pressure gaseous refrigerant to the heat exchange tube 200 of the condenser through the second pipe 102. The high-temperature, high-pressure gaseous refrigerant in the heat exchange tube 200 condenses and releases heat, transforming into liquid refrigerant, which then flows into the evaporator through the first pipe 101.

[0093] In some embodiments of this utility model, the main body segment 11 of the second pipe 102 is made of alloy steel. Therefore, by limiting the main body segment 11 of the second pipe 102 to alloy steel, the main body segment 11 of the second pipe 102 can withstand a certain degree of deformation during processing (avoiding cracking during bending), without excessive springback or severe work hardening due to excessive strength. This ensures that the main body segment 11 of the second pipe 102 has high structural strength while adapting to the bending requirements of the installation space.

[0094] In some embodiments of this utility model, the main body segment 11 of the first tube 101 is made of alloy steel. Therefore, by limiting the main body segment 11 of the first tube 101 to alloy steel, the main body segment 11 of the first tube 101 can withstand a certain degree of deformation during processing (avoiding cracking during bending), without excessive springback or severe work hardening due to excessive strength. This ensures that the main body segment 11 of the first tube 101 has high structural strength while adapting to the bending requirements of the installation space.

[0095] In some embodiments of this utility model, the main body section 11 of the first pipe 101 is made of alloy steel, and the main body section 11 of the second pipe 102 is made of alloy steel, thereby ensuring that the main body section 11 of the first pipe 101 and the main body section 11 of the second pipe 102 of the piping assembly 100 have high structural strength while adapting to the bending requirements of the installation space, thus improving the reliability of the piping assembly 100.

[0096] In some embodiments of this utility model, the piping 1 further includes a connector, which is connected to the end of the main body section 11 away from the distribution section 12. Thus, the connector facilitates the connection between the end of the main body section 11 away from the distribution section 12 and the compressor or outdoor unit of the air conditioner.

[0097] In some embodiments of this utility model, the piping 1 further includes a connector, which is a brass component and is welded to the main body section 11. This arrangement ensures the reliability of the welded connection between the brass connector and the alloy steel main body section 11.

[0098] Specifically, such as Figures 3-8 As shown, the main body section 11 of the first tube 101 has a first connector 1011 at the end opposite to the ligand section. The first connector 1011 is used to connect to the heat exchanger of the outdoor unit of the air conditioner. The first connector 1011 is a brass component, and the connection between the main body section 11 and the heat exchanger of the outdoor unit of the air conditioner is facilitated through the first connector 1011. Figures 9-12 As shown, the main body section 11 of the second tube 102 has a second connector 1021 at the end opposite to the ligand section. The second connector 1021 is used to connect to the compressor. The second connector 1021 is a brass piece. The connection between the main body section 11 and the compressor is facilitated by the second connector 1021.

[0099] In one specific embodiment, such as Figure 2As shown, both the main body section 11 of the first pipe 101 and the main body section 11 of the second pipe 102 include the same number of bent sections 112 and straight sections 111. The bent sections 112 of the first pipe 101 and the second pipe 102 are arranged opposite to each other, as are the straight sections 111 of the first pipe 101 and the second pipe 102. The reinforcing member 2 is at least fitted outside the bent portion of the second pipe 102. It can be understood that since the diameter of the first pipe 101 is smaller than the diameter of the second pipe 102, by fitting the reinforcing member 2 at least outside the bent portion of the second pipe 102 with the larger diameter, pipe bending of the second pipe 102 during installation is effectively prevented, thus improving the reliability of the piping 1.

[0100] It should be noted that the reinforcing member 2 can also be fitted at least outside the bend of the second tube 102 and at least outside the bend of the first tube 101.

[0101] In some embodiments of this invention, the diameter of the first tube 101 is 4mm-8mm. Therefore, while ensuring that the diameter of the first tube 101 is smaller than the diameter of the second tube 102, setting the diameter of the first tube 101 to 4mm-8mm ensures smooth flow of the refrigerant within the first tube 101. It should be noted that the diameter of the first tube 101 can be 4mm, 5mm, 6mm, 6.35mm, 7mm, or 8mm.

[0102] In some embodiments of this invention, the diameter of the second tube 102 is 7mm-11mm. Therefore, while ensuring that the diameter of the first tube 101 is smaller than the diameter of the second tube 102, setting the diameter of the second tube 102 to 7mm-11mm ensures smooth flow of the refrigerant within the second tube 102. It should be noted that the diameter of the second tube 102 can be 7mm, 8mm, 9mm, 9.52mm, 10mm, or 11mm.

[0103] In some embodiments of this utility model, such as Figure 2 As shown, the piping assembly 100 also includes an insulation section 5, which covers the outer wall of the main body section 11. Thus, the insulation section 5 provides insulation for the main body section 11, thereby protecting the medium within the main body section 11 and ensuring smooth flow of the cooling medium within the main body section 11, reducing condensation and improving the reliability of the piping assembly 100.

[0104] The heat exchanger 1000 of this utility model embodiment is described below.

[0105] According to the embodiment of the present utility model, the heat exchanger 1000, such as Figure 1 and Figure 2As shown, the system includes heat exchange tubes 200 and piping assembly 100, with one end of distribution section 12 away from the main body section 11 connected to the heat exchange tubes 200. Thus, the cold medium can enter the main body section 11 from the end away from the distribution section 12, and be transported through the main body section 11 to multiple distribution sections 12, and finally from the multiple distribution sections 12 to the heat exchange tubes 200 of the heat exchanger 1000. The cold medium in the heat exchange tubes 200 can also be transported through the multiple distribution sections 12 to the main body section 11, and then transported out through the main body section 11, thereby realizing the piping 1 as a cold medium circulation channel.

[0106] According to the embodiment of the present invention, the heat exchanger 1000 is provided with a piping assembly 100. The piping 1 includes a main body section 11 and a plurality of distribution sections 12. The main body section 11 is made of alloy steel. The distribution sections 12 are respectively connected to the main body section 11 and the heat exchange tubes 200 of the heat exchanger 1000. The yield strength of the main body section 11 is a, the yield strength of 304L stainless steel is b, and the yield strength of copper is c, and the following condition is met: c < a < b. This ensures that the main body section 11 has high structural strength while adapting to the bending requirements of the installation space. Moreover, the cost of alloy steel is lower than that of copper, thereby effectively reducing the cost of the heat exchanger 1000.

[0107] The following describes the indoor unit of the air conditioner according to an embodiment of the present invention.

[0108] An indoor air conditioning unit according to an embodiment of the present invention includes a heat exchanger 1000.

[0109] According to the embodiment of this utility model, the indoor unit of the air conditioner is provided with a heat exchanger 1000. The piping 1 includes a main section 11 and multiple distribution sections 12. The main section 11 is made of alloy steel. The distribution sections 12 are respectively connected to the main section 11 and the heat exchange tubes 200 of the heat exchanger 1000 of the indoor unit of the air conditioner. The yield strength of the main section 11 is a, the yield strength of 304L stainless steel is b, and the yield strength of copper is c, and the following condition is met: c < a < b. Thus, while ensuring that the main section 11 has high structural strength, it can adapt to the bending requirements of the installation space. Moreover, the cost of alloy steel is lower than that of copper, thereby effectively reducing the cost of the indoor unit of the air conditioner.

[0110] The following describes an air conditioner according to an embodiment of the present invention.

[0111] An air conditioner according to an embodiment of the present invention includes an indoor unit.

[0112] The piping assembly 100 includes piping 1, which includes a main section 11 and multiple distribution sections 12. The distribution sections 12 are connected to the main section 11 and the heat exchange tubes 200 of the heat exchanger 1000 of the indoor unit of the air conditioner, respectively. The end of the main section 11 away from the distribution sections 12 can be connected to the compressor, thereby achieving communication between the compressor and the heat exchange tubes 200 through piping 1. The refrigerant can be transported from the compressor to the heat exchange tubes 200 through piping 1 or from the heat exchange tubes 200 to the compressor through piping 1. Alternatively, the end of the main section 11 away from the distribution sections 12 can be connected to the outdoor unit of the air conditioner, thereby achieving communication between the outdoor unit of the air conditioner and the heat exchange tubes 200 through piping 1. The refrigerant can be transported from the outdoor unit of the air conditioner to the heat exchange tubes 200 through piping 1 or from the heat exchange tubes 200 to the outdoor unit of the air conditioner through piping 1.

[0113] Specifically, the piping 1 consists of multiple pipes, including a first pipe 101 and a second pipe 102. The diameter of the first pipe 101 is smaller than that of the second pipe 102. The distribution section 12 of the first pipe 101 is connected to the main body section 11 and the heat exchange tube 200 of the heat exchanger 1000 of the indoor unit of the air conditioner, respectively. The end of the main body section 11 of the first pipe 101 away from the distribution section 12 is connected to the heat exchanger of the outdoor unit of the air conditioner. The distribution section 12 of the second pipe 102 is connected to the main body section 11 and the heat exchange tube 200 of the heat exchanger 1000 of the indoor unit of the air conditioner, respectively. The end of the main body section 11 of the second pipe 102 away from the distribution section 12 is connected to the compressor. During cooling, the outdoor unit heat exchanger acts as a condenser, and the indoor unit heat exchanger 1000 acts as an evaporator. The liquid refrigerant in the condenser flows into the heat exchange tube 200 of the evaporator through the first pipe 101. The low-temperature, low-pressure liquid refrigerant in the heat exchange tube 200 absorbs heat and evaporates, transforming into gaseous refrigerant, which then flows into the compressor through the second pipe 102. During heating, the outdoor unit heat exchanger acts as an evaporator, and the indoor unit heat exchanger 1000 acts as a condenser. The compressor delivers high-temperature, high-pressure gaseous refrigerant to the heat exchange tube 200 of the condenser through the second pipe 102. The high-temperature, high-pressure gaseous refrigerant in the heat exchange tube 200 condenses and releases heat, transforming into liquid refrigerant, which then flows into the evaporator through the first pipe 101.

[0114] According to the embodiment of this utility model, an air conditioner indoor unit is provided. The piping 1 includes a main section 11 and multiple distribution sections 12. The main section 11 is made of alloy steel. The distribution sections 12 are respectively connected to the main section 11 and the heat exchange tubes 200 of the heat exchanger 1000 of the air conditioner indoor unit. The yield strength of the main section 11 is a, the yield strength of 304L stainless steel is b, and the yield strength of copper is c, and the following condition is met: c < a < b. Thus, while ensuring that the main section 11 has high structural strength, it can adapt to the bending requirements of the installation space. Moreover, the cost of alloy steel is lower than that of copper, thereby effectively reducing the cost of the air conditioner.

[0115] Other components of the air conditioner according to the embodiments of this utility model, such as the indoor unit, the outdoor unit, and the compressor, as well as their operation, are known to those skilled in the art and will not be described in detail here.

[0116] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0117] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A piping assembly, characterized in that, For use in heat exchangers, the piping assembly includes: The piping includes a main section and multiple distribution sections. The main section is made of alloy steel. The distribution sections are connected to the main section and the heat exchange tubes of the heat exchanger, respectively. The yield strength of the main section is a, the yield strength of 304L stainless steel is b, and the yield strength of copper is c, and the following conditions are met: c < a < b.

2. The piping assembly according to claim 1, characterized in that, The main body section is made of austenitic stainless steel.

3. The piping assembly according to claim 1, characterized in that, The inner surface of the main body segment is smooth, and the outer surface of the main body segment is smooth.

4. The piping assembly according to claim 1, characterized in that, The piping assembly further includes a reinforcing member, and the main body section includes: A straight line segment, wherein there are at least two straight line segments; A bent section, wherein the bent section is located between any two adjacent straight sections and is connected to the adjacent straight sections, and the reinforcing member is at least sleeved outside the bent section.

5. The piping assembly according to claim 4, characterized in that, The reinforcing element is a spring.

6. The piping assembly according to claim 1, characterized in that, Also includes: A distributor, wherein the distributor bit is used to connect multiple distribution segments and the main segment connection.

7. The piping assembly according to claim 6, characterized in that, It also includes a connection component located between the distributor and the body segment and comprising: First paragraph; The second segment comprises a first sub-segment, a transition segment, and a second sub-segment arranged sequentially along its length. The transition segment is connected to both the first and second sub-segments. The first sub-segment is fitted outside the first segment, and its diameter is larger than that of the second segment. One end of the first segment abuts against the inner wall of the transition segment. The first segment is welded to both the transition segment and the first sub-segment. One of the first segment and the second sub-segment is connected to the distributor, and the other is connected to the main segment.

8. The piping assembly according to claim 7, characterized in that, The end of the first sub-segment that is away from the transition segment is inclined in a direction away from the central axis of the first sub-segment.

9. The piping assembly according to claim 6, characterized in that, The heat exchange tube is made of aluminum, the distribution section is made of aluminum, and the distributor is made of aluminum. Alternatively, the heat exchange tube is made of copper, the distribution section is made of copper, and the distributor is made of copper. Alternatively, the heat exchange tube is made of copper, the distribution section is made of copper, and the distributor is made of brass.

10. The piping assembly according to claim 1, characterized in that, The piping consists of multiple pipes, including a first pipe and a second pipe, wherein the diameter of the first pipe is smaller than the diameter of the second pipe. And / or, the main body section of the second tube is made of alloy steel; And / or, the main body section of the first tube is made of alloy steel.

11. The piping assembly according to claim 10, characterized in that, The diameter of the first tube is 4mm-8mm; And / or, the diameter of the second tube is 7mm-11mm.

12. The piping assembly according to claim 1, characterized in that, Also includes: The insulation section covers the outer wall surface of the main body section.

13. The piping assembly according to claim 1, characterized in that, The yield strength of the main body section is a, where a≤250MPa; And / or, the tensile strength of the main body segment is d, 300 MPa ≤ d ≤ 540 MPa.

14. The piping assembly according to claim 1, characterized in that, The piping also includes a connector connected to the end of the main body section away from the distribution section; And / or, the joint is a brass component, and the joint is welded to the main body section.

15. A heat exchanger, characterized in that, include: Heat exchanger tubes; According to any one of claims 1-14, the end of the distribution section opposite to the main body section is connected to the heat exchange tube.

16. An indoor unit for an air conditioner, characterized in that, Includes the heat exchanger according to claim 15.

17. An air conditioner, characterized in that, Including the air conditioner indoor unit as described in claim 16.

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