Heat exchanger pipeline and heat exchanger

Abstract

The utility model provides a heat exchanger pipeline and a heat exchanger, the heat exchanger pipeline comprises a plurality of heat exchange pipelines, a liquid inlet pipe and connectors, and the heat exchange pipelines form a heat exchange channel for fluid circulation; the connector is connected to an inlet of the heat exchange channel, part of the connector is located outside the heat exchange pipeline, and the inner diameter of the connector is gradually reduced in the direction facing the inlet of the heat exchange channel. The liquid inlet pipe comprises a pipe body and a liquid inlet section which are connected with each other, the outer diameter of the liquid inlet section is larger than that of the pipe body, the liquid inlet section is partially located in the connector, and the liquid inlet section and the connector are welded together. According to the heat exchanger pipeline, the connecting quality between the liquid inlet pipe and the heat exchange pipeline can be improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of heat exchanger components, and in particular to a heat exchanger pipeline and a heat exchanger. Background Art

[0002] A heat exchanger is a device for transferring heat. The heat exchanger includes a box and a heat exchanger pipeline. The heat exchange pipeline is at least partially located in the box and connected to the box. The heat exchanger pipeline transfers and exchanges the heat inside the box with the heat between other structures.

[0003] In the related art, the heat exchanger pipeline includes a plurality of heat exchange pipes, a liquid inlet pipe, a liquid outlet pipe, etc. After the plurality of heat exchange pipes are connected end to end, a heat exchange channel for fluid circulation is formed. The liquid inlet pipe and the liquid outlet pipe are respectively welded to the heat exchange pipe, and both are connected to the heat exchange channel. In order to enable the fluid to enter the liquid inlet pipe to throttle and reduce the pressure, the inner diameter of the liquid inlet pipe is much smaller than the inner diameter of the heat exchange channel. In order to facilitate the connection between the liquid inlet pipe and the heat exchange channel, a straight pipe joint is provided at the opening of the heat exchange channel, and the joint is welded at the opening of the heat exchange pipe, and the inner diameter of the joint is smaller than the inner diameter of the heat exchange pipe. Then, the liquid inlet pipe is inserted into the joint, and the liquid inlet pipe and the joint are welded and fixed, so that the connection between the liquid inlet pipe and the heat exchange pipe can be achieved.

[0004] However, since the joint and the liquid inlet pipe are clearance-fitted, the solder is prone to leakage defects during welding, resulting in poor welding quality and affecting the connection between the liquid inlet pipe and the heat exchange pipe. Utility Model Content

[0005] The embodiment of the present disclosure provides a heat exchanger pipeline, which can improve the connection quality between the liquid inlet pipe and the heat exchange pipe. The technical solution is as follows:

[0006] The disclosed embodiment provides a heat exchanger pipeline, which includes a joint, a liquid inlet pipe and a heat exchange pipeline, wherein the heat exchange pipeline forms a heat exchange channel for fluid circulation, and the heat exchange channel has an opening for liquid inflow; the joint is connected to the opening of the heat exchange channel and is partially located outside the heat exchange pipeline, and the inner diameter of the joint gradually decreases in the direction toward the opening of the heat exchange channel; the liquid inlet pipe includes a tube body and a liquid inlet section that are interconnected, the outer diameter of the liquid inlet section is larger than the outer diameter of the tube body, and the liquid inlet section is at least partially located in the joint, and the liquid inlet section is welded to the joint.

[0007] In another implementation of the present disclosure, the liquid inlet section includes a flared section and a middle section, one end of the flared section is connected to the middle section, and the other end of the flared section is connected to the tube body, and the inner diameter of the flared section gradually increases in the direction of the tube body toward the middle section; the middle section is located in the joint and is welded to the joint.

[0008] In another implementation of the present disclosure, the liquid inlet section also includes an insertion section, which is located in the heat exchange pipe; the insertion section is connected to one end of the middle section away from the expansion section, and the outer diameter of the insertion section is larger than the outer diameter of the tube body.

[0009] In yet another implementation of the present disclosure, the liquid inlet pipe is an integral structural component.

[0010] In another implementation of the present disclosure, the middle section includes a straight pipe section and a narrowed section, one end of the straight pipe section is connected to the widened section, the other end of the straight pipe section is connected to one end of the narrowed section, and the other end of the narrowed section is connected to the inserted section; the outer diameter of the straight pipe section is greater than the outer diameter of the inserted section.

[0011] In another implementation of the present disclosure, there are multiple liquid inlet pipes; the heat exchanger pipeline also includes a distributor, and the distributor is connected to the multiple liquid inlet pipes.

[0012] In another implementation of the present disclosure, the distributor includes a main connecting pipe and a liquid distribution joint, the main connecting pipe is connected to the liquid distribution joint; the liquid distribution joint has a plurality of flow holes connected at both ends, each of the flow holes is connected to the main connecting pipe; the plurality of flow holes are arranged in a one-to-one correspondence with the plurality of liquid inlet pipes, and one end of the liquid inlet pipe away from the joint is inserted into the corresponding flow hole.

[0013] In another implementation of the present disclosure, the liquid distribution connector includes a first connecting section and a second connecting section that are connected to each other, the flow through hole is located in the first connecting section and is connected to the interior of the second connecting section; the second connecting section is located in the main connecting pipe and is connected to the main connecting pipe, and the outer diameter of the first connecting section is larger than the outer diameter of the main connecting pipe.

[0014] In yet another implementation of the present disclosure, in a direction from the second connecting segment to the first connecting segment, an outer diameter of the first connecting segment gradually increases.

[0015] In another implementation of the present disclosure, a heat exchanger is further provided, the heat exchanger comprising a box body and a heat exchanger pipeline, the heat exchanger pipeline is at least partially connected to the box body, and the heat exchanger pipeline is the heat exchanger pipeline described above.

[0016] The technical solution provided by the embodiments of the present disclosure has the following beneficial effects:

[0017] When the heat exchanger pipeline provided by the embodiment of the present disclosure is assembled in a heat exchanger, since the heat exchanger pipeline includes multiple heat exchange pipes, and the multiple heat exchange pipes are connected end to end to form a heat exchange channel for fluid circulation inside, the heat exchange medium can be transported through the heat exchange channel so that the heat exchanger pipeline can achieve heat exchange.

[0018] Since the joint in the heat exchanger pipeline is connected to the opening of the heat exchange channel, the inner diameter of the joint gradually decreases in the direction toward the opening of the heat exchange channel, so that the joint can be connected to the heat exchange channel, and the trumpet-shaped joint provides a larger installation space for the liquid inlet pipe. In addition, because the liquid inlet pipe includes a tube body and a liquid inlet section that are connected to each other, and the outer diameter of the liquid inlet section is larger than the outer diameter of the tube body, the liquid inlet section is at least partially located in the joint, and the liquid inlet section and the joint are welded together, the liquid inlet section with a larger outer diameter can be matched with the trumpet-shaped joint, and the welding space between the liquid inlet section with a larger outer diameter and the trumpet-shaped joint can be increased to facilitate the addition of solder, so that the solder can easily penetrate, thereby reducing the difficulty of welding, increasing the welding strength, improving the welding quality, and reducing the welding leakage rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 A schematic structural diagram of an end portion of a heat exchanger pipeline provided in an embodiment of the present disclosure;

[0021] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0022] Figure 3 for Figure 1 The structural diagram of the middle liquid inlet pipe;

[0023] Figure 4 for Figure 3 Schematic diagram from another angle;

[0024] Figure 5 A schematic diagram of the structure of a heat exchanger provided in an embodiment of the present disclosure.

[0025] The symbols in the figure mean the following:

[0026] 100. heat exchange pipe; 200. box body;

[0027] 1. Connector; 2. Liquid inlet pipe; 21. Pipe body; 22. Liquid inlet inlet section; 221. Expanding section; 222. Middle section; 2221. Straight pipe section; 2222. Narrowing section; 223. Insertion section;

[0028] 3. Distributor; 31. Main connecting pipe; 32. Liquid distribution connector; 320. Flow through hole; 321. First connecting section; 322. Second connecting section. DETAILED DESCRIPTION

[0029] In order to make the objectives, technical solutions and advantages of the present disclosure more clear, the embodiments of the present disclosure will be further described in detail below with reference to the accompanying drawings.

[0030] The present disclosure provides a heat exchanger pipeline, such as Figure 1 As shown, the heat exchanger pipeline includes a joint 1, a liquid inlet pipe 2 and a plurality of heat exchange pipes 100, and the plurality of heat exchange pipes 100 are connected end to end in sequence to form a heat exchange channel for fluid circulation. The heat exchange channel has an opening for liquid to flow in.

[0031] Figure 2 for Figure 1 The enlarged picture of A in the middle, combined with Figure 2 The joint 1 is connected to the opening of the heat exchange channel and is partially located outside the heat exchange pipe 100. In the direction toward the opening of the heat exchange channel, the inner diameter of the joint 1 gradually decreases.

[0032] Continue to see Figure 2 The liquid inlet pipe 2 includes a tube body 21 and a liquid inlet section 22 which are connected to each other. The outer diameter of the liquid inlet section 22 is larger than the outer diameter of the tube body 21, and at least part of the liquid inlet section 22 is located in the joint 1. The liquid inlet section 22 is welded to the joint 1.

[0033] When the heat exchanger pipeline provided by the embodiment of the present disclosure is assembled in a heat exchanger, since the heat exchanger pipeline includes a plurality of heat exchange pipes 100, and the plurality of heat exchange pipes 100 are sequentially connected end to end to form a heat exchange channel for fluid circulation, the heat exchange medium can be transported through the heat exchange channel so that the heat exchanger pipeline can achieve heat exchange.

[0034] Since the joint 1 in the heat exchanger pipeline is connected to the opening of the heat exchange channel, the inner diameter of the joint 1 gradually decreases in the direction toward the opening of the heat exchange channel, so that the joint 1 can be connected to the heat exchange channel, and the trumpet-shaped joint 1 provides a larger installation space for the liquid inlet pipe 2. In addition, because the liquid inlet pipe 2 includes a tube body 21 and a liquid inlet section 22 that are connected to each other, and the outer diameter of the liquid inlet section 22 is larger than the outer diameter of the tube body 21, the liquid inlet section 22 is at least partially located in the joint 1, and the liquid inlet section 22 is welded to the joint 1, so that the liquid inlet section 22 with a larger outer diameter can be matched with the trumpet-shaped joint 1, and at the same time, the welding space between the liquid inlet section 22 with a larger outer diameter and the trumpet-shaped joint 1 can be increased to facilitate the addition of solder, so that the solder can easily penetrate, thereby reducing the difficulty of welding, increasing the welding strength, improving the welding quality, and reducing the welding leakage rate.

[0035] Figure 3 for Figure 1 The structural diagram of the liquid inlet pipe is shown in Figure 1. Figure 3 Optionally, the liquid inlet section 22 includes a flared section 221 and a middle section 222, one end of the flared section 221 is connected to the middle section 222, and the other end of the flared section 221 is connected to the tube body 21. In the direction from the tube body 21 to the middle section 222, the outer diameter of the flared section 221 gradually increases. The middle section 222 is located in the joint 1 and is welded to the joint 1.

[0036] In the above implementation, by setting the liquid inlet section 22 as a flared section 221 and a middle section 222, the flared section 221 can be connected to the middle section 222 with a larger outer diameter, and can also be connected to the tube body 21 with a smaller outer diameter. Moreover, the middle section 222 with a larger outer diameter can also be matched with the bell-mouthed joint 1 to increase the welding area and facilitate welding together.

[0037] Of course, the flared section 221 may also be other structures, for example, a structure having the same outer diameter as the middle section 222 but a smaller inner diameter than the outer diameter of the tube body 21. The above structure may be changed at will, as long as the tube body 21 with a smaller outer diameter can be connected to the middle section 222 with a larger outer diameter.

[0038] Optionally, the liquid inlet section 22 further includes an insertion section 223, which is located in the heat exchange pipe 100. The insertion section 223 is connected to an end of the middle section 222 away from the expansion section 221, and the outer diameter of the insertion section 223 is greater than the outer diameter of the pipe body 21.

[0039] In the above implementation, the insertion section 223 is provided so that the liquid inlet section 22 can be inserted into the heat exchange pipe 100 to ensure that the two can communicate with each other and will not be easily separated.

[0040] Optionally, the liquid inlet pipe 2 is an integrated structural component.

[0041] The liquid inlet pipe 2 is arranged as an integral structural component, which is not only convenient for processing but also allows the liquid inlet pipe 2 to have a certain deformation to facilitate connection and arrangement.

[0042] Exemplarily, the liquid inlet pipe 2 is a copper structure, which can be easily stretched and bent.

[0043] In this embodiment, the liquid inlet pipe 2 is formed by drawing a pipe. During processing, the pipe mouth of the liquid inlet pipe 2 is expanded by a expander in advance to form a liquid inlet inlet section 22. Then the liquid inlet inlet section 22 of the liquid inlet pipe 2 is fixed, and the other end of the liquid inlet pipe 2 is pulled, so that the liquid inlet pipe 2 is stretched to form a pipe body 21 with a smaller outer diameter. This not only facilitates processing, but also makes it more convenient to weld the liquid inlet pipe 2 to the joint 1.

[0044] Optionally, the middle section 222 includes a straight section 2221 and a narrowing section 2222, one end of the straight section 2221 is connected to the expanding section 221, the other end of the straight section 2221 is connected to one end of the narrowing section 2222, and the other end of the narrowing section 2222 is connected to the inserting section 223. The outer diameter of the straight section 2221 is greater than the outer diameter of the inserting section 223.

[0045] In the above implementation, the middle section 222 can be connected to the insertion section 223 through the necking section 2222 , and at the same time, connected to the flaring section 221 through the straight pipe section 2221 .

[0046] Of course, the middle section 222 may also be other structures, for example, directly being a contracted section 2222 , etc., as long as the expanded section 221 and the inserted section 223 can be connected together.

[0047] Optionally, there are multiple liquid inlet pipes 2. There are also multiple openings. The multiple openings are arranged in one-to-one correspondence with the multiple liquid inlet pipes 2. One end of each liquid inlet pipe 2 is welded to the corresponding opening.

[0048] The heat exchanger pipeline further includes a distributor 3 , which is connected to a plurality of liquid inlet pipes 2 .

[0049] In the above implementation, by arranging multiple liquid inlet pipes 2, heat exchange medium can be simultaneously input into the heat exchange channel, thereby improving the heat exchange efficiency in the heat exchange channel. The distributor 3 is used to introduce heat exchange medium from other devices into multiple liquid inlet pipes 2 at the same time.

[0050] Figure 4 for Figure 3 Schematic diagram from another angle, combined with Figure 4Optionally, the distributor 3 includes a main connecting pipe 31 and a liquid distribution joint 32, and the main connecting pipe 31 is connected to the liquid distribution joint 32. The liquid distribution joint 32 has a plurality of flow holes 320 connected to both ends, and each flow hole 320 is connected to the main connecting pipe 31. The plurality of flow holes 320 are arranged in one-to-one correspondence with the plurality of liquid inlet pipes 2, and the end of the liquid inlet pipe 2 away from the joint 1 is inserted into the corresponding flow hole 320.

[0051] In the above implementation, the main connecting pipe 31 is used to connect with other devices so as to introduce the heat exchange medium outside the heat exchanger into the liquid distribution joint 32. The liquid distribution joint 32 is used to connect with multiple liquid inlet pipes 2 to divide the main connecting pipe 31 into multiple branches.

[0052] Optionally, the liquid distribution connector 32 includes a first connecting section 321 and a second connecting section 322 connected to each other, and the flow through hole 320 is located in the first connecting section 321 and communicates with the interior of the second connecting section 322. The second connecting section 322 is located in the main connecting pipe 31 and connected to the main connecting pipe 31, and the outer diameter of the first connecting section 321 is greater than the outer diameter of the main connecting pipe 31.

[0053] In the above implementation, the above configuration can form a plurality of flow holes 320 through the first connecting section 321 with a larger outer diameter, so as to be connected with a plurality of liquid inlet pipes 2. The second connecting section 322 is used to be connected with the main connecting pipe 31.

[0054] Optionally, in the direction from the second connecting segment 322 to the first connecting segment 321 , the outer diameter of the first connecting segment 321 gradually increases.

[0055] In the above implementation, the outer diameter of the first connecting section 321 is gradually increased to form a structure in which the outer diameter gradually increases, so that the liquid distribution joint 32 and the main connecting pipe 31 can be easily positioned during assembly.

[0056] Of course, the first connecting section 321 may also be other structures, such as a straight pipe section with a larger diameter at one end and a smaller diameter at the other end, etc.

[0057] In this embodiment, the heat exchanger may be an evaporator, and the heat exchange medium in the heat exchange channel may be the heat exchange medium transported from the condenser.

[0058] The working principle of the heat exchanger pipeline provided by the embodiment of the present disclosure is briefly introduced below:

[0059] When assembling the heat exchanger pipeline, first, weld the joint 1 to the opening of the heat exchange channel. Then, insert the insertion section 223 of the liquid inlet section 22 of the liquid inlet pipe 2 into the heat exchange channel, and make the middle section 222 located inside the joint 1 and the expanded section 221 located outside the joint 1.

[0060] Then, welding is performed between the middle section 222 and the joint 1 , so that the middle section 222 and the joint 1 are welded together.

[0061] Then, the distributor 3 is connected to the plurality of liquid inlet pipes 2 respectively, and the distributor 3 is connected to other devices to introduce heat exchange medium. In this way, the heat exchange medium can enter the heat exchange channel to achieve heat exchange.

[0062] On the other hand, the present disclosure also provides a heat exchanger, such as Figure 5 As shown, the heat exchanger includes a box body 200 and a heat exchanger pipeline. The heat exchanger pipeline is at least partially connected in the box body 200, and the heat exchanger pipeline is the heat exchanger pipeline mentioned above.

[0063] The above heat exchanger has the same beneficial effects as the heat exchanger pipeline mentioned above, which will not be repeated here.

[0064] The above are only optional embodiments of the present disclosure and are not intended to limit the present disclosure. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present disclosure should be included in the protection scope of the present disclosure.

Claims

1. A heat exchanger pipeline, characterized in that: The heat exchanger pipeline comprises a joint (1), a liquid inlet pipe (2) and a heat exchange pipe (100), wherein the heat exchange pipe (100) forms a heat exchange channel for fluid circulation, and the heat exchange channel has an opening for liquid to flow in; The joint (1) is connected to the opening of the heat exchange channel and is partially located outside the heat exchange pipe (100), and the inner diameter of the joint (1) gradually decreases in the direction toward the opening of the heat exchange channel; The liquid inlet pipe (2) comprises a tube body (21) and a liquid inlet section (22) which are connected to each other, the outer diameter of the liquid inlet section (22) is larger than the outer diameter of the tube body (21), and the liquid inlet section (22) is at least partially located in the joint (1), and the liquid inlet section (22) is welded to the joint (1).

2. The heat exchanger pipeline according to claim 1, characterized in that: The liquid inlet section (22) comprises a flared section (221) and a middle section (222), one end of the flared section (221) is connected to the middle section (222), and the other end of the flared section (221) is connected to the tube body (21), and the inner diameter of the flared section (221) gradually increases in a direction from the tube body (21) toward the middle section (222); The middle section (222) is located inside the joint (1) and is connected to the joint (1).

3. The heat exchanger pipeline according to claim 2, characterized in that: The liquid inlet section (22) further comprises an insertion section (223), and the insertion section (223) is located in the heat exchange pipe (100); The insertion section (223) is connected to an end of the middle section (222) away from the expansion section, and the outer diameter of the insertion section (223) is greater than the outer diameter of the tube body (21).

4. The heat exchanger pipeline according to claim 3, characterized in that: The liquid inlet pipe (2) is an integrated structural component.

5. The heat exchanger pipeline according to claim 3, characterized in that: The middle section (222) comprises a straight pipe section (2221) and a narrowed section (2222), one end of the straight pipe section (2221) is connected to the expanded section, the other end of the straight pipe section (2221) is connected to one end of the narrowed section (2222), and the other end of the narrowed section (2222) is connected to the inserted section (223); The outer diameter of the straight pipe section (2221) is greater than the outer diameter of the insertion section (223).

6. The heat exchanger pipeline according to any one of claims 1 to 5, characterized in that: There are multiple liquid inlet pipes (2); The heat exchanger pipeline further comprises a distributor (3), and the distributor (3) is connected to the plurality of liquid inlet pipes (2).

7. The heat exchanger pipeline according to claim 6, characterized in that: The distributor (3) comprises a main connecting pipe (31) and a liquid dispensing joint (32), wherein the main connecting pipe (31) is connected to the liquid dispensing joint (32); The liquid distribution joint (32) has a plurality of flow through holes (320) therein, and each of the flow through holes (320) is connected to the main connecting pipe (31); The plurality of circulation through holes (320) are arranged in one-to-one correspondence with the plurality of liquid inlet pipes (2), and one end of the liquid inlet pipe (2) away from the joint (1) is inserted into the corresponding circulation through hole (320).

8. The heat exchanger pipeline according to claim 7, characterized in that: The liquid dispensing connector (32) comprises a first connecting section (321) and a second connecting section (322) which are connected to each other, and the flow through hole (320) is located in the first connecting section (321) and is communicated with the interior of the second connecting section (322); The second connecting section (322) is located inside the main connecting pipe (31) and is connected to the main connecting pipe (31); the outer diameter of the first connecting section (321) is greater than the outer diameter of the main connecting pipe (31).

9. The heat exchanger pipeline according to claim 8, characterized in that: In the direction from the second connecting section (322) to the first connecting section (321), the outer diameter of the first connecting section (321) gradually increases.

10. A heat exchanger, characterized in that: The heat exchanger comprises a housing (200) and a heat exchanger pipeline, wherein the heat exchanger pipeline is at least partially connected in the housing (200), and the heat exchanger pipeline is the heat exchanger pipeline according to any one of claims 1 to 9.

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