Dual-flow heat exchanger

Abstract

This utility model relates to a dual-flow heat exchanger, comprising: a core; a first end cap assembly fixedly connected to the core; and a second end cap assembly including an inlet pipe, an outlet pipe, a first housing, and a second housing, both the first and second housings being fixedly connected to the core. The inlet pipe is fluidly connected to the second housing, and the outlet pipe is fluidly connected to the first housing, thereby allowing the heat exchange medium to enter through the inlet pipe and exit through the outlet pipe. The dual-flow heat exchanger provided in this application has the advantages of simple structure and easy assembly. Furthermore, the entire welding process of this dual-flow heat exchanger is simple, with no welding blind spots. Compared to the prior art, the dual-flow heat exchanger provided in this application achieves high welding quality and a low product defect rate due to sufficient welding and the absence of welding blind spots.

Description

Technical Field

[0001] This utility model relates to the field of heat exchangers, specifically to a dual-flow heat exchanger. Background Technology

[0002] Heat exchangers are widely used in many fields. According to their flow path, heat exchangers can be divided into single-pass, double-pass, and multi-pass heat exchangers. Traditional heat exchangers are generally single-pass, meaning the end caps are installed on both sides of the core, and the inlet and outlet flanges or pipes are installed on the two end caps respectively. The fluid enters the end cap from one side, flows through the internal channel, and then flows from the other end cap to the outlet flow path; this is a unidirectional flow from one side to the other, hence single-pass. A double-pass heat exchanger refers to a heat exchanger where the fluid flows in from the lower end cap on one side, passes through the core to the other end cap, then flows back into the core, and flows out from the upper end cap on one side. The fluid undergoes a reversal process within the heat exchanger body, hence the name double-pass heat exchanger. The difference between a double-pass and a single-pass heat exchanger is that the upper and lower end caps on the left side are not welded together and are separated by a baffle plate.

[0003] However, in the existing dual-flow heat exchanger, the baffle is welded between the upper and lower end caps during processing, and then the upper and lower end caps are welded to the core. The baffle also needs to be welded to the core. Due to the position of the baffle, welding is extremely difficult, and there may even be cases where the welding is not in place, resulting in leakage of the heat exchange medium. As a result, the entire process of the dual-flow heat exchanger is complicated and the product defect rate is high. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a dual-flow heat exchanger.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a dual-flow heat exchanger, comprising:

[0006] Core;

[0007] The first end cap assembly is fixedly connected to the core.

[0008] The second end cap assembly includes an inlet pipe, an outlet pipe, a first housing, and a second housing. The first housing and the second housing are both fixedly connected to the core. The inlet pipe is in fluid communication with the second housing, and the outlet pipe is in fluid communication with the first housing, so that the heat exchange medium enters from the inlet pipe and flows out from the outlet pipe.

[0009] Preferably, the first housing includes a first component plate, a second component plate, a third component plate, and a fourth component plate. One side of the first component plate is fixedly connected to the core by welding. The other side of the first component plate is fixedly connected to one side of the second component plate. The other side of the second component plate is fixedly connected to one side of the third component plate. The other side of the third component plate is fixedly connected to the core by welding. The four sides of the fourth component plate are respectively fixedly connected to the core, the first component plate, the second component plate, and the third component plate, so that the first component plate, the second component plate, the third component plate, the fourth component plate, and the core together form a sealed first chamber, and the first chamber is in fluid communication with the discharge pipe.

[0010] Preferably, the second housing includes a fifth, sixth, seventh, eighth, and ninth component plate. One side of the fifth component plate is fixedly connected to the core, the first component plate of the first housing, and the fourth component plate by welding. The other side of the fifth component plate is fixedly connected to one side of the seventh component plate by welding. The other side of the seventh component plate is fixedly connected to one side of the sixth component plate. The other side of the sixth component plate is fixedly connected to the first and fourth component plates of the first housing by welding. The eighth component plate is fixedly connected to the fifth, sixth, seventh, and ninth component plates respectively. The ninth component plate is fixedly connected to the core, the fourth, sixth, and eighth component plates respectively, so that the fourth, fifth, sixth, seventh, eighth, and ninth component plates together form a sealed second chamber, and the inlet pipe is in fluid communication with the second chamber.

[0011] Preferably, it also includes a cover plate, which is fixedly connected to the first box and the second box by welding, so that the cover plate covers the first chamber of the first box and the second chamber of the second box.

[0012] Preferably, the cover plate is provided with a first mounting through hole and a second mounting through hole, both of which penetrate the cover plate. The inlet pipe is inserted into the first mounting through hole, and the inlet pipe and the cover plate are fixedly connected together by welding, thereby enabling the inlet pipe to communicate with the first chamber. The outlet pipe is inserted into the second mounting through hole, and the outlet pipe and the cover plate are fixedly connected together by welding, thereby enabling the outlet pipe to communicate with the second chamber.

[0013] Preferably, the first end cap assembly includes an end cap body and two end caps. The end cap body is fixedly connected to the core body by welding, and the two end caps are respectively fixedly connected to both ends of the end cap body. The end caps are fixedly connected to the end cap body by welding on one hand, and on the other hand, the end caps are also fixedly connected to the core body by welding on the other hand.

[0014] The beneficial effects of this application are as follows: Firstly, the dual-flow heat exchanger provided by this application has the advantages of simple structure and easy assembly. Secondly, since the first box of the second end cap assembly is first welded to the core, and then the fifth component plate of the second box is welded together with the core, the first component plate of the first box, and the fourth component plate, and then the sixth component plate is welded together with the first component plate and the fourth component plate, the entire welding process of the dual-flow heat exchanger is simple and there are no welding blind spots. Compared with the prior art, the dual-flow heat exchanger provided by this application has high welding quality and low product defect rate due to sufficient welding and the absence of welding blind spots. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the dual-flow heat exchanger provided by this utility model.

[0016] Figure 2 Another structural schematic diagram of the dual-flow heat exchanger provided by this utility model.

[0017] Figure 3 Another structural schematic diagram of the dual-flow heat exchanger provided by this utility model.

[0018] Figure 4 A partially enlarged view of the dual-flow heat exchanger provided by this utility model. Detailed Implementation

[0019] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments. Similar elements in different embodiments are referred to by related similar element reference numerals. In the following embodiments, many details are described to facilitate a better understanding of the present application. However, those skilled in the art will readily recognize that some features may be omitted in different situations, or may be replaced by other elements, materials, or methods. In some cases, certain operations related to the present application are not shown or described in the specification. This is to avoid obscuring the core parts of the present application with excessive description. For those skilled in the art, detailed description of these related operations is not necessary; they can fully understand the related operations based on the description in the specification and general technical knowledge in the art.

[0020] Furthermore, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments, and the operational steps involved in each embodiment can also be rearranged or adjusted in a manner that is obvious to those skilled in the art. Therefore, the specification and drawings are only for clearly describing a particular embodiment and do not imply that they represent the necessary components and / or order.

[0021] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages).

[0022] Please refer to Figure 1-4 This application provides a dual-flow heat exchanger (hereinafter referred to as "the heat exchanger"), the main purpose of which is to cool down a high-temperature heat exchange medium or heat up a low-temperature heat exchange medium. The heat exchanger includes:

[0023] Core 1;

[0024] First end cap assembly 2, the first end cap assembly 2 is fixedly connected to the core 1;

[0025] The second end cap assembly 3 includes an inlet pipe 31, an outlet pipe 32, a first housing 34, and a second housing 35. Both the first housing 34 and the second housing 35 are fixedly connected to the core 1. The inlet pipe 31 is fluidly connected to the second housing 35, and the outlet pipe 32 is fluidly connected to the first housing 34, allowing the heat exchange medium to enter through the inlet pipe 31 and exit through the outlet pipe 32. Thus, the heat exchange medium enters the second housing 35 through the inlet pipe 31, then flows into the core 1, undergoes heat exchange in the core 1, flows out into the first housing 34, and finally exits through the outlet pipe 32, thereby achieving the purpose of heat exchange.

[0026] Please refer to some embodiments of this application. Figure 1-4 The first housing 34 includes a first component plate 341, a second component plate 342, a third component plate 343, and a fourth component plate 344. One side of the first component plate 341 is fixedly connected to the core 1 by welding. The other side of the first component plate 341 is fixedly connected to one side of the second component plate 342. The other side of the second component plate 342 is fixedly connected to one side of the third component plate 343. The other side of the third component plate 343 is fixedly connected to the core 1 by welding. The four sides of the fourth component plate 344 are fixedly connected to the core 1, the first component plate 341, the second component plate 342, and the third component plate 343, respectively, so that the first component plate 341, the second component plate 342, the third component plate 343, the fourth component plate 344, and the core 1 together form a sealed first chamber 340. The first chamber 340 is in fluid communication with the discharge pipe 32. In this application, the fourth assembly plate 344 and the core 1 are fixedly connected together by welding. The fourth assembly plate 344 in this application is the base plate described in the background art.

[0027] Please refer to some embodiments of this application. Figure 1-4The second housing 35 includes a fifth component plate 351, a sixth component plate 352, a seventh component plate 353, an eighth component plate 354, and a ninth component plate 355. One side of the fifth component plate 351 is fixedly connected to the core 1, the first component plate 341 of the first housing 34, and the fourth component plate 344 by welding. The other side of the fifth component plate 351 is fixedly connected to one side of the seventh component plate 353 by welding. The other side of the seventh component plate 353 is fixedly connected to one side of the sixth component plate 352. The other side of the sixth component plate 352 is connected to the first component plate 341 and the fourth component plate 344 of the first housing 34. The components are fixedly connected together by welding. The eighth component plate 354 is fixedly connected to the fifth component plate 351, the sixth component plate 352, the seventh component plate 353, and the ninth component plate 355. The ninth component plate 355 is fixedly connected to the core 1, the fourth component plate 344, the sixth component plate 352, and the eighth component plate 354, so that the fourth component plate 344, the fifth component plate 351, the sixth component plate 352, the seventh component plate 353, the eighth component plate 354, and the ninth component plate 355 together form a sealed second chamber 350. The inlet pipe 31 is in fluid communication with the second chamber 350. In this way, after the first housing 34 is welded to the core 1, the fifth component plate 351 of the second housing is first welded to the core 1 and the first component plate 341, and the fifth component plate 351 is also welded together with the fourth component plate 344. Next, the sixth component plate 352 is welded to the first component plate 341 and the fourth component plate 344, and then the seventh component plate 353, the eighth component plate 354, and the ninth component plate 355 are welded. In this application, the fifth component plate 351 and the sixth component plate 352 have the same structure and are generally L-shaped. Compared with the prior art, the structure of the first housing 34 and the second housing 35 ensures that the welding difficulty is reduced and there are no blind spots in the welding, thereby improving the welding quality and reducing the product defect rate.

[0028] Please refer to some embodiments of this application. Figure 1-4 The heat exchanger also includes a cover plate 33, which is fixedly connected to the first housing 34 and the second housing 35 by welding, so that the cover plate 33 covers the first chamber 340 of the first housing 34 and the second chamber 350 of the second housing 35.

[0029] Please refer to some embodiments of this application. Figure 1-4The cover plate 33 is provided with a first mounting through hole 331 and a second mounting through hole 332, both of which penetrate the cover plate 33. The inlet pipe 31 is inserted into the first mounting through hole 331, and the inlet pipe 31 and the cover plate 33 are fixedly connected together by welding, thereby enabling the inlet pipe 31 to communicate with the first chamber 340. The outlet pipe 32 is inserted into the second mounting through hole 332, and the outlet pipe 32 and the cover plate 33 are fixedly connected together by welding, thereby enabling the outlet pipe 32 to communicate with the second chamber 350. In this application, when the inlet pipe 31 is inserted into the first mounting through hole 331, there is a gap between the two. The gap is sealed by welding, and the two are fixedly connected together. Similarly, when the outlet pipe 32 is inserted into the second mounting through hole 332, there is also a gap between the two. The gap is sealed by welding, and the two are fixedly connected together.

[0030] In one embodiment of this application, please refer to Figure 1-4 The first end cap assembly 2 includes an end cap body 21 and two end caps 22. The end cap body 21 is fixedly connected to the core body 1 by welding. The two end caps 22 are respectively fixedly connected to both ends of the end cap body 21. The end caps 22 are fixedly connected to the core body 1 by welding on one hand, and on the other hand, the end caps 22 are also fixedly connected to the core body 1 by welding on the other hand.

[0031] The dual-flow heat exchanger provided in this application has the advantages of simple structure and easy assembly. Secondly, since the first box of the second end cap assembly is welded to the core first, and then the fifth component plate of the second box is welded together with the core, the first component plate of the first box, and the fourth component plate, and then the sixth component plate is welded together with the first component plate and the fourth component plate, the entire welding process of the dual-flow heat exchanger is simple and there are no welding blind spots. Compared with the prior art, the dual-flow heat exchanger provided in this application has high welding quality and low product defect rate due to sufficient welding and no welding blind spots.

[0032] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A double-flow heat exchanger, characterized in that, include: Core; The first end cap assembly is fixedly connected to the core. The second end cap assembly includes an inlet pipe, an outlet pipe, a first housing, and a second housing. The first housing and the second housing are both fixedly connected to the core. The inlet pipe is in fluid communication with the second housing, and the outlet pipe is in fluid communication with the first housing, so that the heat exchange medium enters from the inlet pipe and flows out from the outlet pipe.

2. The double-flow heat exchanger according to claim 1, characterized in that The first housing includes a first component plate, a second component plate, a third component plate, and a fourth component plate. One side of the first component plate is fixedly connected to the core by welding. The other side of the first component plate is fixedly connected to one side of the second component plate. The other side of the second component plate is fixedly connected to one side of the third component plate. The other side of the third component plate is fixedly connected to the core by welding. The four sides of the fourth component plate are fixedly connected to the core, the first component plate, the second component plate, and the third component plate, respectively, so that the first component plate, the second component plate, the third component plate, the fourth component plate, and the core together form a sealed first chamber. The first chamber is in fluid communication with the discharge pipe.

3. The double-pass heat exchanger of claim 2, wherein, The second housing includes a fifth, sixth, seventh, eighth, and ninth component plate. One side of the fifth component plate is fixedly connected to the core, the first component plate of the first housing, and the fourth component plate by welding. The other side of the fifth component plate is fixedly connected to one side of the seventh component plate by welding. The other side of the seventh component plate is fixedly connected to one side of the sixth component plate. The other side of the sixth component plate is fixedly connected to the first and fourth component plates of the first housing by welding. The eighth component plate is fixedly connected to the fifth, sixth, seventh, and ninth component plates respectively. The ninth component plate is fixedly connected to the core, the fourth, sixth, and eighth component plates respectively, so that the fourth, fifth, sixth, seventh, eighth, and ninth component plates together form a sealed second chamber. The inlet pipe is in fluid communication with the second chamber.

4. The double-flow heat exchanger of claim 3, wherein It also includes a cover plate, which is fixedly connected to the first box and the second box by welding, so that the cover plate covers the first chamber of the first box and the second chamber of the second box.

5. The double-flow heat exchanger of claim 4, wherein The cover plate is provided with a first mounting through hole and a second mounting through hole, both of which are through the cover plate. The inlet pipe is inserted into the first mounting through hole, and the inlet pipe and the cover plate are fixedly connected together by welding, thereby enabling the inlet pipe to communicate with the first chamber. The outlet pipe is inserted into the second mounting through hole, and the outlet pipe and the cover plate are fixedly connected together by welding, thereby enabling the outlet pipe to communicate with the second chamber.

6. The dual-flow heat exchanger according to claim 1, characterized in that, The first end cap assembly includes an end cap body and two end caps. The end cap body is fixedly connected to the core body by welding. The two end caps are fixedly connected to both ends of the end cap body. The end caps are fixedly connected to the end cap body by welding on one hand, and also fixedly connected to the core body by welding on the other hand.

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