Efficient heat exchanger based on three-period minimal curved surface

Abstract

The utility model discloses an efficient heat exchanger based on a three-period minimal curved surface, which belongs to the technical field of heat exchangers, and comprises a heat exchanger shell and a heat exchange core body, the heat exchanger shell is provided with a hot fluid inlet, a hot fluid outlet, a cold fluid inlet and a cold fluid outlet; the heat exchange core body is arranged in the heat exchanger shell and is formed by regularly arranging a plurality of three-period tiny curved surface crystal lattices, and the curved surface crystal lattice structures form a hot fluid region, a cold fluid region and a core body inner wall. According to the utility model, the manufacturing efficiency is high, the leakage risk is low, the heat exchange performance is high, the flow resistance is small, the cost is low, the weight is light, the inlet and outlet blocks matched with the inlet and outlet can be randomly arranged on the whole heat exchanger, the structural form of the joint can be made into any shape, the matching of system assembly is greatly improved, and in addition, the porosity, wall thickness and the like of lattices can be parametrically controlled. The design and development speed is high.

Description

Technical Field

[0001] This utility model relates to the field of heat exchanger technology, specifically to a high-efficiency heat exchanger based on a three-period minimal curved surface. Background Technology

[0002] Traditional plate-fin heat exchangers are constructed by stacking stamped plates and fins layer by layer and then welding them in a brazing furnace. The design and verification process for these heat exchangers is quite lengthy, requiring the development of stamping dies for different plate types and corresponding welding fixtures. Failure to pass performance verification necessitates repeated die revisions. Furthermore, traditional plate stamping and joint machining processes are limited by structural design and manufacturing limitations, restricting the development of only regular heat exchange structures. Traditional heat exchangers cannot adequately meet the high-requirement, high-performance heat exchange requirements of aerospace, automotive, shipbuilding, and electronics industries. These applications typically demand small size and weight, high heat exchange efficiency, and low flow resistance. However, to achieve high heat exchange efficiency, heat exchangers often need to be very large, resulting in large size, weight, and high cost. Alternatively, denser internal fins and other turbulence features can be used, but this significantly increases flow resistance, and these dense turbulence features are difficult to manufacture and have a high scrap rate.

[0003] For demanding, high-performance heat exchange applications in aerospace, automotive, marine, and electronic devices, there is a need to develop novel, compact heat exchangers with high heat exchange efficiency and low flow resistance. Under the same conditions, novel heat exchangers based on three-period minimal surfaces offer significant advantages, including strong overall heat exchange capacity, good structural mechanical properties, and low medium flow resistance, making them better suited for high-performance applications. The three-period minimal surface is a biomimetic structure found in many biological structures, such as the exoskeletons of weevils and beetles. Research has shown that this structure possesses excellent mechanical and thermal properties. Furthermore, additive manufacturing technology has matured from the aerospace field and is expanding into industries such as biomedicine and automotive, providing feasibility for manufacturing complex lattice structures and biomimetic structures, enabling the application of the three-period minimal surface structure in novel heat exchangers. Utility Model Content

[0004] The purpose of this invention is to provide a high-efficiency heat exchanger based on a three-period minimal curved surface to solve the above problems, improve manufacturing efficiency, reduce leakage risk, enhance heat exchange performance, and achieve low cost and strong adaptability.

[0005] Technical solution: This utility model provides a high-efficiency heat exchanger based on a three-period minimal curved surface, including: a heat exchanger shell and a heat exchanger core. The heat exchanger shell is provided with a hot fluid inlet, a hot fluid outlet, a cold fluid inlet, and a cold fluid outlet. The heat exchanger core is disposed inside the heat exchanger shell and is composed of a large number of three-period minimal curved surface lattices arranged in a regular manner. These curved surface lattice structures form a hot fluid domain, a cold fluid domain, and an inner wall of the core.

[0006] Furthermore, in the aforementioned high-efficiency heat exchanger based on a three-period minimal surface, the hot fluid inlet, hot fluid outlet, cold fluid inlet, and cold fluid outlet are respectively connected to the hot fluid domain and the cold fluid domain, and the inner wall thickness of the heat exchange core at the connection point is increased, thereby reducing the flow channels of the corresponding hot fluid domain and cold fluid domain.

[0007] Furthermore, in the aforementioned high-efficiency heat exchanger based on a three-period minimal curved surface, the heat exchanger shell and heat exchange core are integrally manufactured using additive manufacturing technology.

[0008] Furthermore, the hot fluid inlet, hot fluid outlet, cold fluid inlet, and cold fluid outlet of the aforementioned high-efficiency heat exchanger based on a three-period minimal curved surface can be located on the same surface of the heat exchanger shell, or the hot fluid inlet and hot fluid outlet can be on the same surface of the heat exchanger shell, while the cold fluid inlet and cold fluid outlet can be on another surface of the heat exchanger shell.

[0009] Furthermore, in the aforementioned high-efficiency heat exchanger based on a three-period minimal surface, the hot fluid inlet and hot fluid outlet can be replaced by a single inlet-outlet connector, and the cold fluid inlet and cold fluid outlet can also be replaced by a single inlet-outlet connector.

[0010] Furthermore, in the aforementioned high-efficiency heat exchanger based on a three-period minimal curved surface, the interface forms of the hot fluid inlet, hot fluid outlet, cold fluid inlet, and cold fluid outlet can be set to any shape as required.

[0011] Furthermore, in the aforementioned high-efficiency heat exchanger based on a three-period minimal surface, hot fluid inlet, hot fluid outlet, cold fluid inlet, and cold fluid outlet are respectively provided with hot fluid inlet baffle, hot fluid outlet baffle, cold fluid inlet baffle, and cold fluid outlet baffle at their connection points with the hot fluid domain and the cold fluid domain. The hot fluid inlet baffle and hot fluid outlet baffle are connected to the hot fluid domain and are used to block the cold fluid domain, and the cold fluid inlet baffle and cold fluid outlet baffle are connected to the cold fluid domain and are used to block the hot fluid domain.

[0012] Furthermore, in the aforementioned high-efficiency heat exchanger based on a three-period minimal surface, the three-period minimal surface lattice structure within the heat exchange core is designed parametrically and directly controlled using functional expression parameters, allowing for adjustment according to actual needs.

[0013] Furthermore, in the aforementioned high-efficiency heat exchanger based on a three-period minimal surface, the hot fluid domain and the cold fluid domain are arranged alternately.

[0014] Furthermore, in the aforementioned high-efficiency heat exchanger based on a three-period minimal curved surface, the heat exchange core has multiple sets of circulations from top to bottom, one of which includes six fluid paths.

[0015] As can be seen from the above technical solution, this utility model has the following beneficial effects: The high-efficiency heat exchanger based on a three-period minimal curved surface described in this utility model achieves integrated molding of the heat exchanger product through additive manufacturing technology, reducing the need for mold opening, trial molding, and stacking and welding of parts. The process is simple, and there are no welding interfaces between parts, resulting in low leakage risk, high heat exchange performance, and low flow resistance. The integrated molding avoids material waste, and the heat exchanger is lighter under the same heat exchange requirements. The interface can be set to any shape according to requirements, which has strong adaptability. The lattice structure parameter design allows for faster design and development. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a high-efficiency heat exchanger structure based on a three-period minimal curved surface according to the present invention.

[0017] Figure 2 This is a schematic diagram of the heat exchange core of this utility model;

[0018] Figure 3 This is a schematic diagram of the fluid circulation cross-section of the heat exchange core of this utility model. Figure 1 ;

[0019] Figure 4 This is a schematic diagram of the fluid circulation cross-section of the heat exchange core of this utility model. Figure 2 ;

[0020] Figure 5 This is a schematic diagram of the fluid circulation cross-section of the heat exchange core of this utility model. Figure 3 ;

[0021] Figure 6 This is a schematic diagram of the fluid circulation cross-section of the heat exchange core of this utility model. Figure 4 ;

[0022] Figure 7 This is a schematic diagram of the fluid circulation cross-section of the heat exchange core of this utility model. Figure 5 ;

[0023] Figure 8 This is a schematic diagram of the fluid circulation cross-section of the heat exchange core of this utility model. Figure 6 .

[0024] In the figure: heat exchanger shell 1, heat exchange core 2, hot fluid inlet 11, hot fluid outlet 12, cold fluid inlet 13, cold fluid outlet 14, hot fluid domain 21, cold fluid domain 22, inner wall of core 23. Detailed Implementation

[0025] Example 1

[0026] like Figure 1-2 The diagram illustrates a high-efficiency heat exchanger based on a three-period minimal curved surface, comprising: a heat exchanger shell 1 and a heat exchanger core 2. The heat exchanger shell 1 is provided with a hot fluid inlet 11, a hot fluid outlet 12, a cold fluid inlet 13, and a cold fluid outlet 14. The heat exchanger core 2 is disposed inside the heat exchanger shell 1 and is composed of a regular arrangement of many three-period minimal curved surface lattices. These curved surface lattice structures form a hot fluid domain 21, a cold fluid domain 22, and an inner wall 23 of the core. The heat exchanger shell 1 and the heat exchanger core 2 are integrally manufactured using an additive manufacturing process. The three-period minimal curved surface lattice structure has a large specific surface area and a very smooth surface, without sharp turns or connection points of the lattice porous structure. The overall structure is interconnected, resulting in a large heat exchange area and low flow resistance, effectively improving heat exchange performance.

[0027] In this embodiment, the hot fluid inlet 11, hot fluid outlet 12, cold fluid inlet 13, and cold fluid outlet 14 are connected to the hot fluid domain 21 and cold fluid domain 22, respectively. The inner wall thickness 23 of the heat exchange core 2 at the connection point is increased, resulting in smaller flow channels in the corresponding hot fluid domain 21 and cold fluid domain 22. When the heat exchanger is working, the hot fluid enters the heat exchange core 2 from the hot fluid inlet 11. Due to the slightly smaller flow channels around the inlet and outlet joints, the flow resistance is slightly greater, forcing the hot fluid to diffuse throughout the entire heat exchange core 2 before flowing out from the outlet. Similarly, the cold fluid enters the heat exchange core 2 from the cold fluid inlet 13. Again, due to the slightly smaller flow channels around the inlet and outlet joints, the cold fluid is forced to diffuse throughout the entire heat exchange core 2 before flowing out from the outlet. Ultimately, this allows for sufficient heat exchange between the hot and cold fluid media throughout the entire heat exchange core 2.

[0028] like Figure 2 The diagram shows a high-efficiency heat exchanger based on a three-period minimal surface. The three-period minimal surface lattice structure in the heat exchange core 2 is based on parametric design and can be directly controlled by function expression parameters, and can be adjusted according to actual needs.

[0029] In this embodiment, the hot fluid domain 21 and the cold fluid domain 22 are arranged alternately.

[0030] like Figure 3-8 The diagram shows a high-efficiency heat exchanger based on a three-period minimal surface. The heat exchange core 2 has multiple sets of circulations from top to bottom, one of which includes six fluid paths.

[0031] Example 2

[0032] Based on Example 1, in this example, as... Figure 1 The diagram illustrates a high-efficiency heat exchanger based on a three-period minimal curved surface. The hot fluid inlet 11, hot fluid outlet 12, cold fluid inlet 13, and cold fluid outlet 14 can be located on the same surface of the heat exchanger shell 1, or the hot fluid inlet 11 and hot fluid outlet 12 can be on the same surface of the heat exchanger shell 1, while the cold fluid inlet 13 and cold fluid outlet 14 are on another surface of the heat exchanger shell 1. The interface forms of the hot fluid inlet 11, hot fluid outlet 12, cold fluid inlet 13, and cold fluid outlet 14 can be configured into any shape as required. This greatly improves the compatibility of system assembly.

[0033] In this embodiment, the hot fluid inlet 11 and hot fluid outlet 12 can be replaced by a connector with the same inlet and outlet, and the cold fluid inlet 13 and cold fluid outlet 14 can also be replaced by a connector with the same inlet and outlet.

[0034] like Figure 2 The diagram illustrates a high-efficiency heat exchanger based on a three-period minimal surface. At the connection points between the hot fluid inlet 11, hot fluid outlet 12, cold fluid inlet 13, and cold fluid outlet 14 and the hot fluid domain 21 and cold fluid domain 22, respectively, hot fluid inlet blocks, hot fluid outlet blocks, cold fluid inlet blocks, and cold fluid outlet blocks are respectively provided. The hot fluid inlet blocks and hot fluid outlet blocks are connected to the hot fluid domain 21 and are used to block the cold fluid domain 22. The cold fluid inlet blocks and cold fluid outlet blocks are connected to the cold fluid domain 22 and are used to block the hot fluid domain 21.

[0035] It should be noted that the above description is merely a technical solution of the utility model and not a limitation. Although the present utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of the utility model without departing from the scope of the present utility model, and all such modifications and substitutions should be covered within the scope of the claims of the present utility model.

Claims

1. A high-efficiency heat exchanger based on a three-period minimal surface, characterized in that: include: The heat exchanger housing (1) is provided with a hot fluid inlet (11), a hot fluid outlet (12), a cold fluid inlet (13), and a cold fluid outlet (14); The heat exchange core (2) is disposed inside the heat exchanger shell (1) and is composed of a number of three-period minimal curved surface lattices arranged regularly. These curved surface lattice structures form a hot fluid domain (21), a cold fluid domain (22) and an inner wall (23) of the core. The hot fluid inlet (11), hot fluid outlet (12), cold fluid inlet (13), and cold fluid outlet (14) are respectively connected to the hot fluid domain (21) and the cold fluid domain (22), and the wall thickness of the inner wall (23) of the heat exchange core (2) at the connection point increases, which makes the flow channels of the corresponding hot fluid domain (21) and cold fluid domain (22) smaller.

2. The high-efficiency heat exchanger based on a three-period minimal surface according to claim 1, characterized in that: The heat exchanger shell (1) and heat exchange core (2) are integrally manufactured using additive manufacturing process.

3. The high-efficiency heat exchanger based on a three-period minimal surface according to claim 1, characterized in that: The hot fluid inlet (11), hot fluid outlet (12), cold fluid inlet (13), and cold fluid outlet (14) can be located on the same side of the heat exchanger shell (1), or the hot fluid inlet (11) and hot fluid outlet (12) can be located on the same side of the heat exchanger shell (1), and the cold fluid inlet (13) and cold fluid outlet (14) can be located on the other side of the heat exchanger shell (1).

4. A high-efficiency heat exchanger based on a three-period minimal surface according to claim 1, characterized in that: The hot fluid inlet (11) and hot fluid outlet (12) are configured as a joint with the same inlet and outlet, and the cold fluid inlet (13) and cold fluid outlet (14) are configured as a joint with the same inlet and outlet.

5. A high-efficiency heat exchanger based on a three-period minimal surface according to claim 1, characterized in that: The interface forms of the hot fluid inlet (11), hot fluid outlet (12), cold fluid inlet (13), and cold fluid outlet (14) can be set to any shape as required.

6. A high-efficiency heat exchanger based on a three-period minimal surface according to claim 1, characterized in that: At the connection points between the hot fluid inlet (11), hot fluid outlet (12), cold fluid inlet (13), and cold fluid outlet (14) and the hot fluid domain (21) and cold fluid domain (22), respectively, hot fluid inlet block, hot fluid outlet block, cold fluid inlet block, and cold fluid outlet block are respectively provided. The hot fluid inlet block and hot fluid outlet block are connected to the hot fluid domain (21) and are used to block the cold fluid domain (22). The cold fluid inlet block and cold fluid outlet block are connected to the cold fluid domain (22) and are used to block the hot fluid domain (21).

7. A high-efficiency heat exchanger based on a three-period minimal surface according to claim 1, characterized in that: The three-period minimal surface lattice structure in the heat exchange core (2) is based on parametric design and can be directly controlled by function expression parameters, and can be adjusted according to actual needs.

8. A high-efficiency heat exchanger based on a three-period minimal surface according to claim 1, characterized in that: The hot fluid domain (21) and cold fluid domain (22) are arranged alternately.

9. A high-efficiency heat exchanger based on a three-period minimal surface according to claim 1, characterized in that: The heat exchange core (2) has multiple circulations from top to bottom, one of which includes 6 fluid paths.

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