Assembled heat exchanger

Abstract

The assembled heat exchanger (100) comprises at least two heat exchanger cores (10), a first communication member (20) and a second communication member (30), each heat exchanger core (10) comprising at least a first flow collecting tube (11), a second flow collecting tube (12) and several flat tubes (13), the flat tubes being arranged vertically between the first flow collecting tube (11) and the second flow collecting tube (12), each end of the first communication member (20) communicating with the first flow collecting tubes (11) of two adjacent heat exchanger cores (10), each end of the second communication member (30) communicating with the second flow collecting tubes (12) of the two adjacent heat exchanger cores (10), and the two adjacent heat exchanger cores (10) being arranged on different planes.

Description

[Technical field]

[0001] (Related Applications) This application claims priority to a Chinese patent application filed on September 1, 2020, bearing application number 202021878547.9 and entitled "Assembled Heat Exchanger", the entire contents of which are incorporated herein by reference.

[0002] The present application relates to the field of refrigeration, and in particular to assembled heat exchangers. [Background technology]

[0003] The main components of an air conditioning system include a compressor, a condenser, a throttling device and a heat exchanger. The heat exchanger serves to exchange heat with the outside. The header of a conventional heat exchanger is connected via a vertical flat tube, and the header is bent to form a heat exchanger structure that is approximately rectangular.

[0004] However, if the header is bent improperly, it is likely to cause deformation of the flat tubes, which may reduce the heat exchange performance of the heat exchanger; at the same time, the process of bending the header is demanding, and the material of the bent segment is prone to plastic deformation, which makes it easy to generate surface losses, thereby causing leakage due to material corrosion. Summary of the Invention

[0005] In view of this, and to address the above technical issues, it is necessary to provide an assembly-type heat exchanger that has good heat exchange performance, is easy to attach and detach, and has a simple structure.

[0006] In order to solve the above technical problems, the present application provides the following technical aspects. The patent application relates to an assembled heat exchanger, which includes at least two heat exchanger cores, a first communicating member and a second communicating member, each heat exchanger core including at least a first collecting tube, a second collecting tube and several flat tubes, the flat tubes being arranged vertically between the first collecting tube and the second collecting tube, both ends of the first communicating member respectively communicating with the first collecting tubes of two adjacent heat exchanger cores, both ends of the second communicating member respectively communicating with the second collecting tubes of two adjacent heat exchanger cores, and the two adjacent heat exchanger cores being arranged in different planes.

[0007] In the present application, two adjacent first flow collection tubes are connected to each other by providing a first communicating member, and two adjacent second flow collection tubes are connected to each other by providing a second communicating member, thereby connecting two adjacent heat exchanger cores to form an assembled heat exchanger, and the assembled heat exchanger is formed without bending the first flow collection tube or the second flow collection tube, thereby avoiding deformation and surface damage due to improper bending of the first flow collection tube or the second flow collection tube, improving heat exchange performance and making attachment and detachment easier.

[0008] In one embodiment, the first communication member includes two first straight pipes and a first curved pipe arranged between the two first straight pipes, and an end of the first straight pipe communicates with and is welded to the first collecting pipe.

[0009] With this design, the assembly and removal of the first communication member facilitates free assembly and arrangement between the heat exchanger cores, and the problem of leakage caused by improper bending of the first collecting tube does not occur.

[0010] In one embodiment, both ends of the first curved pipe each have a flare segment, and the two first straight pipes each enter the corresponding flare segment and communicate with the first curved pipe.

[0011] With this design, a fixed position where the straight pipe enters the first curved pipe can be determined, facilitating connection between the first straight pipe and the first curved pipe.

[0012] In one embodiment, the second communication member includes two second straight pipes and a second curved pipe arranged between the two second straight pipes, and an end of the second straight pipe communicates with and is welded to the second collecting pipe.

[0013] With this design, the assembly and disassembly of the second communication member facilitates free assembly and arrangement between the heat exchanger cores, and the problem of leakage caused by improper bending of the second collecting tube does not occur.

[0014] In one embodiment, the diameter of the second curved pipe is greater than the diameter of the first curved pipe.

[0015] With this design, when used as an evaporator, the gas-liquid two-phase flow medium enters the first curved pipe, and after evaporation, becomes gaseous and its volume increases, and then enters the second curved pipe. At this time, the diameter of the second curved pipe is larger than the diameter of the first curved pipe, so that a sufficient space can be secured for the gaseous flow medium to flow.

[0016] In one embodiment, the assembled heat exchanger further includes a liquid separator provided in the first collecting pipe, and both ends of the first communicating member are respectively connected to the liquid separators in the two adjacent first collecting pipes.

[0017] With this design, the liquid separating device is disposed in the first flow collecting pipe and connected via the first communicating member, making it easy to remove and replace the liquid separating device.

[0018] In one embodiment, the assembled heat exchanger further includes a connecting member fixedly connected to the side plates of two adjacent heat exchanger cores, and the material of the connecting member is metal.

[0019] Designed in this way, the connecting member strengthens the fixed connection and acts as a wind shield.

[0020] In one embodiment, the modular heat exchanger further includes an inlet pipe in communication with the first collection pipe, and an outlet pipe in communication with the second collection pipe.

[0021] With this design, the flow of the flow medium becomes easy, and when used as an evaporator, the gas-liquid two-phase flow medium enters the first collecting tube through the inlet tube, becomes gaseous after evaporation, and flows into the outlet tube through the second collecting tube.

[0022] In one embodiment, the inlet and outlet tubes may be in the same heat exchanger core or in different heat exchanger cores.

[0023] With such a design, the flow medium enters the heat exchanger core via the inlet pipe, undergoes heat exchange, and after its state has been changed, flows again to the outlet pipe.

[0024] The present application further provides an air conditioning system including the prefabricated heat exchanger described above.

[0025] Compared with the prior art, the assembled heat exchanger provided in the present application connects two adjacent first flow collector tubes to each other by providing a first communicating member, and connects two adjacent second flow collector tubes to each other by providing a second communicating member, thereby connecting two adjacent heat exchanger cores to form an assembled heat exchanger, and forms an assembled heat exchanger without bending the first flow collector tube or the second flow collector tube, thereby avoiding deformation and surface damage caused by improper bending of the first flow collector tube or the second flow collector tube, improving heat exchange performance, and facilitating installation and removal. [Brief description of the drawings]

[0026] [Figure 1] FIG. 2 is a structural schematic diagram of the assembled heat exchanger provided in the present application. [Diagram 2] FIG. 2 is a partial enlarged view of a first communication member of the assembled heat exchanger provided in the present application, which is connected to two adjacent first collecting tubes, respectively.

[0027] 100 assembled heat exchanger, 10 heat exchanger core, 11 first collecting tube, 12 second collecting tube, 13 flat tube, 14 side plate, 20 first connecting member, 21 first curved pipe, 22 first straight pipe, 23 flare segment, 30 second connecting member, 31 second curved pipe, 32 second straight pipe, 40 connecting member, 50 inlet pipe, 60 outlet pipe. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0028] Hereinafter, the technical aspects of the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, but it is clear that the described embodiments are only some of the embodiments of the present application, and are not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present application without creative efforts belong to the protection scope of the present application.

[0029] It should be explained that when an assembly is referred to as being "mounted" to another assembly, it may be mounted directly to the other assembly or there may be intervening assemblies present. When an assembly is referred to as being "mounted" to another assembly, it may be mounted directly to the other assembly or there may be intervening assemblies present at the same time. When an assembly is referred to as being "secured" to another assembly, it may be secured directly to the other assembly or there may be intervening assemblies present at the same time.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs. Herein, the terms used in the specification of this application are merely intended to describe specific embodiments and are not intended to limit the present application. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0031] As shown in Fig. 1, the present application provides a prefabricated heat exchanger 100 for application in an air conditioning system to exchange heat with the outside. In this embodiment, the heat exchanger core 10 is a microchannel heat exchanger core 10, and of course, in other embodiments, the heat exchanger core 10 can be a finned or other type of heat exchanger core 10.

[0032] Referring to FIG. 1, FIG. 1 is a schematic diagram of an assembled heat exchanger 100 in one embodiment of the present application, the assembled heat exchanger 100 includes at least two heat exchanger cores 10, a first communication member 20 and a second communication member 30, each heat exchanger core 10 includes at least a first collection tube 11 and a second collection tube 12, both ends of the first communication member 20 are respectively connected to the first collection tube 11 of the two adjacent heat exchanger cores 10, the flow medium enters from the first collection tube 11 and flows between the two adjacent heat exchanger cores 10 through the first communication member 20, and both ends of the second communication member 30 are respectively connected to the second collection tube 12 of the two adjacent heat exchanger cores 10, the flow medium flows between the two adjacent second collection tubes 12 through the second communication member 30.

[0033] It can be seen that by providing a first communicating member 20 to connect two adjacent first flow collection pipes 11 to each other, and by providing a second communicating member 30 to connect two adjacent second flow collection pipes 12 to each other, two adjacent heat exchanger cores 10 are connected to form an assembled heat exchanger 100, without bending the first flow collection pipe 11 or the second flow collection pipe 12, effectively avoiding deformation and surface damage caused by improper bending of the first flow collection pipe 11 or the second flow collection pipe 12, improving heat exchange performance, and making it easier to remove and assemble the assembled heat exchanger 100.

[0034] Specifically, the diameter of the first flow collecting pipe 11 is smaller than the diameter of the second flow collecting pipe 12, and when used as an evaporator, the gas-liquid two-phase flow medium enters the first flow collecting pipe 11, evaporates, becomes gaseous, and its volume increases, and then enters the second flow collecting pipe 12. At this time, since the diameter of the second flow collecting pipe 12 is larger than the diameter of the first flow collecting pipe 11, sufficient space can be secured for the gaseous flow medium to flow.

[0035] Furthermore, as shown in FIG. 2 , the first communicating member 20 includes two first straight pipes 22 and a first curved pipe 21 arranged between the two first straight pipes 22, and the end of the first straight pipe 22 communicates with the first collecting pipe 11 and is welded to the first collecting pipe 11. The assembly and disassembly of the first communicating member 20 facilitates free assembly and arrangement between the heat exchanger cores 10, and no leakage problems occur due to improper bending of the first collecting pipe 11.

[0036] As shown in FIG. 1, the heat exchanger core 10 further includes flattened tubes 13 that are used to drain condensate.

[0037] Specifically, the flat tubes 13 are arranged vertically, and both ends of the flat tubes 13 are connected to the first collection pipe 11 and the second collection pipe 12, respectively. Due to the effect of gravity, the flat tubes 13 can discharge the condensate after the water reaches a certain level, which is advantageous for discharging the condensate. In addition, there are multiple flat tubes 13, and the multiple flat tubes 13 are arranged at intervals from each other along the axial direction of the first collection pipe 11 and the second collection pipe 12, respectively.

[0038] In another embodiment, the assembled heat exchanger 100 further includes a liquid separation device (not shown) provided in the first collecting pipe 11, and both ends of the first communicating member 20 are respectively connected to the liquid separation devices in the two adjacent first collecting pipes 11, making it easy to remove and replace the liquid separation device.

[0039] Specifically, both ends of the first curved pipe 21 each have a flare segment 23, which ensures that the first straight pipe 22 enters the first curved pipe 21, making it easy to connect the first straight pipe 22 and the first curved pipe 21, and the two first straight pipes 22 each enter the corresponding flare segment 23 and are connected to the first curved pipe 21.

[0040] As shown in FIG. 1 , the second connecting member 30 includes two second straight pipes 32 and a second curved pipe 31 arranged between the two second straight pipes 32, and the end of the second straight pipe 32 communicates with the second collecting pipe 12 and is welded to the second collecting pipe 12. The assembly and disassembly of the second connecting member 30 facilitates free assembly and arrangement between the heat exchanger cores 10, and no leakage problems will occur due to improper bending of the second collecting pipe 12.

[0041] Specifically, the diameter of the second curved pipe 31 is larger than the diameter of the first curved pipe 21. When the heat exchanger core 10 is used as an evaporator, the gas-liquid two-phase flow medium enters the first curved pipe 21 from the first flow collecting pipe 11, and becomes a gaseous flow medium after evaporation, increasing its volume, and then flows into the second flow collecting pipe 12 and enters the second curved pipe 31. At this time, since the diameter of the second curved pipe 31 is larger than the diameter of the first curved pipe 21, a sufficient space can be secured for the gaseous flow medium to flow in the two adjacent second flow collecting pipes 12.

[0042] As shown in FIG. 1, the assembled heat exchanger 100 further includes a connecting member 40 fixedly connected to the side plates 14 of two adjacent heat exchanger cores 10, which strengthens the fixed connection and serves as a wind shield.

[0043] In the present application, the connecting members 40 are plate-shaped metal members connected by welding, and of course, in other embodiments, the connecting members 40 may be metal members of other shapes, for example tubular metal members connected to each other by locking.

[0044] Furthermore, the assembled heat exchanger 100 further includes an inlet pipe 50 communicating with the first collecting pipe 11, and an outlet pipe 60 communicating with the second collecting pipe 12, which facilitates the flow of the flow medium. When used as an evaporator, the gas-liquid two-phase flow medium enters the first collecting pipe 11 through the inlet pipe 50, evaporates, becomes gaseous, and flows into the outlet pipe 60 through the second collecting pipe 12.

[0045] Specifically, the inlet pipe 50 and the outlet pipe 60 may be provided in the same heat exchanger core 10 or may be provided in different heat exchanger cores 10 .

[0046] The assembled heat exchanger 100 provided in the present application connects two adjacent first flow collection pipes 11 to each other by providing a first communicating member 20, and connects two adjacent second flow collection pipes 12 to each other by providing a second communicating member 30, thereby connecting two adjacent heat exchanger cores 10 to form the assembled heat exchanger 100, and without bending the first flow collection pipe 11 or the second flow collection pipe 12, deformation and surface damage caused by improper bending of the first flow collection pipe 11 or the second flow collection pipe 12 is effectively avoided, improving the heat exchange performance and making it easy to remove and assemble the assembled heat exchanger 100.

[0047] It should be further explained that the use of terms such as "first", "second", etc. to define parts is merely for the purpose of easily distinguishing corresponding parts, and unless otherwise specified, the above terms do not have any special meaning and should not be understood as limiting the scope of protection of the present application.

[0048] The technical features of the above embodiments may be combined in any manner. For the sake of brevity, not all possible combinations of the technical features in the above embodiments have been described. However, to the extent that any combination of these technical features is not contradictory, any combination should be considered within the scope of the present specification.

[0049] It should be understood by those skilled in the art that the above embodiments are only used to explain the present application, and are not intended to limit the present application; within the substantial scope of the present application, any suitable modifications and variations made by the above embodiments belong to the scope of the protection claimed by the present application.

Claims

1. a heat exchanger core including four heat exchanger cores, a first communication member and a second communication member, each of the heat exchanger cores including at least a first flow collecting tube, a second flow collecting tube and some flat tubes, the flat tubes being vertically arranged between the first flow collecting tube and the second flow collecting tube, both ends of the first communication member respectively communicating with the first flow collecting tubes of two adjacent heat exchanger cores, both ends of the second communication member respectively communicating with the second flow collecting tubes of two adjacent heat exchanger cores, and the two adjacent heat exchanger cores being arranged on different planes, the first communication member includes two first straight pipes and a first curved pipe provided between the two first straight pipes, an end of the first straight pipe communicates with the first flow collecting pipe and is connected to the first flow collecting pipe; the second communication member includes two second straight pipes and a second curved pipe provided between the two second straight pipes, an end of the second straight pipe communicates with the second flow collecting pipe and is connected to the second flow collecting pipe; the second flow collecting pipe and the second straight pipe form one side of the plane, The connecting member is fixedly connected to side plates of two adjacent heat exchanger cores, thereby connecting to the first flow collecting pipe and the second flow collecting pipe, a first side of the connection member is disposed at a distance from the first communication member, and a second side of the connection member is disposed at a distance from the second communication member; a second side of the connection member, the second communication member, and the second flow collecting pipe form a closed triangular support structure, further comprising an inlet pipe communicating with the first collecting pipe and an outlet pipe communicating with the second collecting pipe; the heat exchanger core provided with the inlet pipe has a width in a direction parallel to the first flow collecting pipe that is narrower than that of the heat exchanger core facing the inlet pipe; an assembly-type heat exchanger, wherein the heat exchanger core provided with the outlet pipe has a narrower width in a direction parallel to the first flow collecting pipe than the heat exchanger core facing it;

2. 2. The assembled heat exchanger according to claim 1, wherein both ends of the first curved pipe each have a flare segment, and the two first straight pipes each enter the corresponding flare segment and communicate with the first curved pipe.

3. The assembled heat exchanger according to claim 1 , wherein the diameter of the second curved pipe is larger than the diameter of the first curved pipe.

4. 2. The assembled heat exchanger according to claim 1, further comprising a liquid separation device provided in the first collecting pipe, and both ends of the first communicating member are respectively connected to the liquid separation devices in two adjacent first collecting pipes.

5. The assembly type heat exchanger according to claim 1 , wherein the connecting members are made of a metal.

6. An air conditioning system comprising a modular heat exchanger according to any one of claims 1 to 5.

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