Multi-channel heat exchanger

Abstract

The utility model relates to a multi-channel heat exchanger which comprises a heat exchange core body, the heat exchange core body comprises a plurality of side-by-side outer pipes and inner pipes located in the outer pipes, first channels are formed in the inner pipes, second channels are formed between the inner pipes and the outer pipes, and sealing blocks are connected to the two ends between the adjacent outer pipes. The adjacent outer pipes and the sealing blocks at the two ends form a third channel; the inner cavity is communicated with the two ends of the inner pipe respectively, the outer cavity covers the two ends of the outer pipe respectively, the sealing covers cover the two ends of the third channel respectively, the inner cavity is arranged in the outer cavity and communicated with an inner cavity connecting pipe penetrating out of the outer cavity, the outer cavity is communicated with an outer cavity connecting pipe, the sealing covers are communicated with sealing cover connecting pipes, and the sealing cover connecting pipes are communicated with the inner cavity connecting pipe. The heat exchanger can realize heat exchange among three heat exchange media, is compact in structure and high in integration level, can be widely applied to heat exchange of media on various vehicles, and can also be applied to heat exchange in other fields.

Description

Technical Field

[0001] This utility model relates to the field of heat exchanger technology, specifically to a multi-channel heat exchanger. Background Technology

[0002] In existing gasoline-powered vehicles, hybrid vehicles, pure electric vehicles, and construction machinery, heat exchange between multiple fluid media is commonly required. Examples include heat exchange between engine antifreeze and air, between intercoolers, between battery refrigerant and coolant, and between air conditioning refrigerant and coolant. These fluid media are typically exchanged using heat exchangers. However, most heat exchangers can only handle two media simultaneously. When three media need to be exchanged simultaneously, multiple heat exchangers must be combined, or a more complex heat exchanger must be used. There is currently no heat exchanger with a simple structure that can handle three media simultaneously. Utility Model Content

[0003] This invention addresses the shortcomings of existing technologies by providing a multi-channel heat exchanger.

[0004] This utility model is achieved through the following technical solution: a multi-channel heat exchanger is provided, including a heat exchange core, which includes multiple parallel outer tubes and an inner tube located inside the outer tubes. The inner tubes form a first channel, and the inner tubes and outer tubes form a second channel. The two ends of adjacent outer tubes are connected with sealing blocks, and adjacent outer tubes and the sealing blocks at both ends form a third channel. It also includes an inner chamber that is connected to both ends of the inner tubes, an outer chamber that covers both ends of the outer tubes, and a sealing cap that covers both ends of the third channel. The inner chambers are disposed inside the outer chambers and are connected by an inner chamber connecting pipe that extends out of the outer chambers.

[0005] In this scheme, the heat exchange medium in the first channel and the heat exchange medium in the second channel are separated by the inner tube wall to achieve heat exchange, and the heat exchange medium in the second channel and the heat exchange medium in the third channel are separated by the outer tube wall to achieve heat exchange, thereby realizing heat exchange between the heat exchange medium in the three channels.

[0006] As an optimization, the second channel has an annular cross-section, and multiple connecting plates connect the inner and outer tubes. In this design, the annular cross-section of the second channel allows for heat exchange separation throughout the entire inner tube wall, improving the heat exchange efficiency.

[0007] As an optimization, heat dissipation strips are connected between adjacent outer tubes. In this design, the heat dissipation strips divide each third channel into multiple smaller channels, thereby allowing the heat exchange medium to flow evenly and improving the heat exchange effect.

[0008] As an optimization, the heat exchange core also includes two side-by-side protective plates, with the outer tube located between the two protective plates. A third channel is also formed between the protective plates and the adjacent outer tube. In this design, the protective plates serve to protect the heat exchange core.

[0009] As an optimization, an outer chamber connecting pipe is connected to the outer chamber, and a cover connecting pipe is connected to the cover. In this design, the outer chamber connecting pipe enables the entry and exit of the heat exchange medium inside the outer chamber, and the cover connecting pipe enables the entry and exit of the heat exchange medium inside the cover.

[0010] As an optimization, both the inner and outer tubes are flat tubes, thereby improving the heat exchange efficiency.

[0011] As an optimization, the length of the inner tube is greater than the length of the outer tube. This facilitates the entry of the inner tube into the inner chamber and the entry of the heat exchange medium from the second channel into the outer chamber.

[0012] The beneficial effects of this utility model are as follows: This utility model provides a multi-channel heat exchanger that can realize heat exchange between three heat exchange media. It has a compact structure and high integration, and can be widely used for heat exchange of media in various vehicles, as well as for heat exchange in other fields. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is an exploded view of the present invention;

[0015] Figure 3 This is a front view of the present invention;

[0016] Figure 4 This is a top view of the present invention;

[0017] Figure 5 This is the left view of the present invention;

[0018] Figure 6 This utility model Figure 3 A cross-sectional view of the AA plane;

[0019] Figure 7 This is a schematic diagram of the heat exchange core of this utility model;

[0020] Figure 8 This is a left view of the heat exchange core of this utility model;

[0021] Figure 9 This is a top view of the heat exchange core of this utility model;

[0022] Figure 10 This is a schematic diagram of the end faces of the outer tube and the inner tube of this utility model;

[0023] Figure 11 This is a top view of the heat dissipation strip of this utility model;

[0024] As shown in the figure:

[0025] 1. Heat exchange core, 2. Outer chamber, 3. Outer chamber connecting pipe, 4. Inner chamber, 5. Inner chamber connecting pipe, 6. Cover, 7. Cover connecting pipe, 11. Outer pipe, 12. Inner pipe, 13. Sealing block, 14. Heat dissipation strip, 15. Protective plate, 16. Connecting plate. Detailed Implementation

[0026] To clearly illustrate the technical features of this solution, the following detailed implementation method will be used to describe the solution.

[0027] like Figures 1-11 As shown, a multi-channel heat exchanger of this utility model includes a heat exchange core 1, two inner chambers 4, two outer chambers 2, and two caps 6.

[0028] like Figure 7-11 As shown, the heat exchange core 1 includes multiple outer tubes 11 arranged side by side and an inner tube 12 located inside the outer tubes 11. The cross-sections of the inner tube 12 and the outer tubes 11 are as follows: Figure 10 As shown, both the inner tube 12 and the outer tube 11 are flat tubes. In this embodiment, both the inner tube 12 and the outer tube 11 are rectangular cross-section tubes, and the wall of the inner tube 12 does not contact the wall of the outer tube 11. Multiple connecting plates 16 connect the inner tube 12 and the outer tube 11, achieving a fixed connection between them. Multiple partition plates are provided inside the inner tube, dividing the inner tube 12 into multiple small channels.

[0029] The two ends of adjacent outer tubes 11 are connected with sealing blocks 13. The heat exchange core 1 also includes two side-by-side protective plates 15. The outer tube 11 is located between the two protective plates 15. The two ends of the protective plates 15 and the adjacent outer tubes 11 are also connected with sealing blocks.

[0030] The inner tube 12 forms a first channel, through which the first type of heat exchange medium flows.

[0031] The inner tube 12 and the outer tube 11 form a second channel, through which the second type of heat exchange medium flows. The flow direction of the first channel is parallel to that of the second channel. Since the wall of the inner tube 12 does not contact the wall of the outer tube 11, the cross-section of the second channel is annular. Through multiple connecting plates 16, the annular cross-section of the second channel is divided into multiple smaller cross-sections, achieving the function of flow diversion and improving the heat exchange effect.

[0032] The adjacent outer tubes 11 and the end caps 13 form a third channel; the protective plate 15 and the adjacent outer tubes 11 also form a third channel. A third type of heat exchange medium flows through the third channel, and the flow direction within the third channel is perpendicular to the flow direction of the first and second channels. A heat dissipation strip 14 connects the adjacent outer tubes 11. Figure 11 The corrugated metal plate shown divides the third channel into multiple small sections, achieving a flow distribution effect and improving heat exchange efficiency. It can also be used as follows... Figure 11 As shown, protrusions are provided on the heat dissipation strip to turbulence and improve heat dissipation efficiency.

[0033] The heat exchange core 1 is a three-dimensional rectangular structure. In order to realize the entry and exit of three channels, two inner chambers 4, two outer chambers 2 and two covers 6 are provided. The two outer chambers 2 cover two opposite sides of the heat exchange core 1, the two covers 6 cover the other two opposite sides of the heat exchange core 1, and the remaining two opposite sides are protective plates 15.

[0034] Two inner chambers 4 are respectively connected to the two ends of two inner tubes 12. The inner chambers 4 are hollow rectangular cavities and are located at the ends of the inner tubes 12, such as... Figure 6 As shown, the inner tube 12 is inserted into the inner chamber 4. In order to achieve the insertion of the inner tube 12, the length of the inner tube 12 is greater than the length of the outer tube 11, so that a gap is left between the inner chamber 4 and the end of the outer tube 11.

[0035] Two outer chambers 2 are respectively enclosed at both ends of the outer tube 11. Each outer chamber 2 is a rectangular shell with one open end, and the open end covers the end face of the heat exchange core 1. Therefore, the medium in the outer tube 11 communicates with the interior of the outer chamber 2 through the gap between the inner chamber 4 and the end of the outer tube 11. The inner chamber 4 is located inside the outer chamber 2, and an inner chamber connecting pipe 5 extends out of the outer chamber 2 from the inner chamber 4, thus enabling the medium to enter and exit the two inner chambers. An outer chamber connecting pipe 3 is connected to the outer chamber 2, enabling the medium to enter and exit the two outer chambers.

[0036] Two caps 6 are respectively placed over the two ends of the third channel. The outer chamber 2 is a rectangular shell with one end open, and the open end covers the end face of the heat exchange core 1, thus realizing the connection between the inside of the cap 6 and the third channel. The cap 6 is connected to the cap connecting pipe 7, which realizes the entry and exit of the medium inside the cap 6.

[0037] The method of using this utility model is as follows: A first heat exchange medium enters the inner chamber 4 from the inner chamber connecting pipe 5 at one end, flows through multiple inner pipes 12, and exits from the inner chamber connecting pipe 5 at the other end of the inner chamber 4; a second heat exchange medium enters the outer chamber 2 from the outer chamber connecting pipe 3 at one end, flows through multiple second channels formed between the inner pipes 12 and the outer pipes 11, and exits from the outer chamber connecting pipe 3 at the other end of the outer chamber 2; a third heat exchange medium enters the cap 6 from the cap connecting pipe 7 at one end, flows through multiple third channels formed between adjacent outer pipes 11, and exits from the cap connecting pipe 7 at the other end of the cap 6.

[0038] The first and second heat exchange media are separated by the inner tube 12 to achieve heat exchange, and the second and third heat exchange media are separated by the outer tube 11 to achieve heat exchange, thus realizing heat exchange between the three heat exchange media.

[0039] Of course, the above description is not limited to the examples above. Technical features of this utility model not described can be implemented by or using existing technology, and will not be repeated here. The above embodiments and drawings are only used to illustrate the technical solution of this utility model and are not intended to limit this utility model. This utility model has been described in detail with reference to preferred embodiments. Those skilled in the art should understand that any changes, modifications, additions or substitutions made by those skilled in the art within the scope of this utility model do not depart from the spirit of this utility model and should also fall within the protection scope of the claims of this utility model.

Claims

1. A multi-channel heat exchanger, characterized in that: The device includes a heat exchange core (1), which includes multiple parallel outer tubes (11) and an inner tube (12) located inside the outer tubes (11). The inner tube (12) forms a first channel, and the inner tube (12) and the outer tubes (11) form a second channel. The two ends of adjacent outer tubes (11) are connected by sealing blocks (13), and the adjacent outer tubes (11) and the sealing blocks (13) at both ends form a third channel. The device also includes an inner chamber (4) that is connected to both ends of the inner tube (12), an outer chamber (2) that covers both ends of the outer tubes (11), and a cover (6) that covers both ends of the third channel. The inner chamber (4) is located inside the outer chamber (2) and is connected by an inner chamber connecting pipe (5) that extends out of the outer chamber (2).

2. The multi-channel heat exchanger according to claim 1, characterized in that: The second channel has an annular cross-section, and multiple connecting plates (16) connect the inner tube (12) and the outer tube (11).

3. A multi-channel heat exchanger according to claim 1, characterized in that: A heat dissipation strip (14) is connected between adjacent outer tubes (11).

4. A multi-channel heat exchanger according to claim 1, characterized in that: The heat exchange core (1) also includes two side-by-side guard plates (15), and the outer tube (11) is located between the two guard plates (15). The guard plates (15) and the adjacent outer tube (11) also form a third channel.

5. A multi-channel heat exchanger according to claim 1, characterized in that: The outer chamber (2) is connected to the outer chamber connecting pipe (3), and the cap (6) is connected to the cap connecting pipe (7).

6. A multi-channel heat exchanger according to claim 1, characterized in that: Both the inner tube (12) and the outer tube (11) are flat tubes.

7. A multi-channel heat exchanger according to claim 1, characterized in that: The length of the inner tube (12) is greater than the length of the outer tube (11).

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