Efficient plate-type fin heat exchanger capable of adapting to high temperature

Abstract

The utility model is applicable to the technical field of fin type heat exchangers, and provides a high-efficiency plate type fin type heat exchanger adaptable to high temperature, which comprises a pipeline, the pipeline is used for isolation and heat exchange of cold and hot fluid, the top and the bottom of the pipeline are respectively sleeved with a group of fixing plates, the pipeline is sleeved with a plurality of groups of fins, and the fins are fixed on the pipeline. The fins are used for increasing the heat exchange area, enhancing turbulent flow and improving the heat exchange coefficient, the multiple sets of fins are arranged between the two sets of fixing plates, multiple sets of mounting holes are formed in the fins, and multiple sets of microgrooves are further formed in the fins. The device solves the technical problems that a traditional heat exchanger is low in heat exchange efficiency, uneven in fluid distribution and large in flow resistance, and the technical effects of enhancing the turbulence effect, improving the heat exchange uniformity, reducing the flow resistance and improving the overall heat exchange efficiency are achieved. Meanwhile, the fluid flowing path is optimized through the conical fins and the microgroove structure, heat exchange is more sufficient, local thermal resistance is reduced, and stability and adaptability in the high-temperature environment are improved.

Description

Technical Field

[0001] This utility model relates to the field of finned heat exchanger technology, and more specifically, to a high-efficiency plate finned heat exchanger that can adapt to high temperatures. Background Technology

[0002] Plate finned heat exchangers are highly efficient and compact heat exchange devices widely used in aerospace, chemical, and energy industries. Their core principle is the exchange of heat between hot and cold fluids flowing in adjacent channels, through a thermally conductive material. The addition of fins significantly increases the heat exchange area and promotes fluid turbulence, thereby improving heat exchange efficiency. This heat exchanger is suitable for various operating conditions, including gas-gas, gas-liquid, and liquid-liquid exchanges, exhibiting excellent heat transfer performance and low pressure loss. Due to its compact structure, light weight, and high heat exchange capacity, it is particularly suitable for low-temperature cooling, high-temperature heating, and high-pressure environments, providing efficient and reliable thermal management solutions for industrial production and energy conversion.

[0003] Currently, plate finned heat exchangers on the market consist of fins and heat exchange tubes. Typically, the fins of plate finned heat exchangers are flat plates. Traditional fins have smooth surfaces, which easily lead to laminar flow, reducing heat transfer efficiency. Furthermore, the thicker thermal boundary layer results in higher thermal resistance, affecting heat transfer capacity. Due to the poor heat transfer performance of flat plate fins, some products use a corrugated structure. However, in actual use, corrugated fins may lead to higher flow resistance, affecting system energy consumption. Moreover, under high flow rate conditions, localized flow dead zones can easily appear, reducing heat transfer uniformity.

[0004] Therefore, based on solving the above problems, this application proposes a high-efficiency plate fin heat exchanger that can adapt to high temperatures. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a high-efficiency plate fin heat exchanger that can adapt to high temperatures.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A high-efficiency plate-finned heat exchanger adaptable to high temperatures includes a pipe for isolating and exchanging heat between hot and cold fluids. A set of fixed plates is fitted at the top and bottom of the pipe. Several sets of fins are fitted on the pipe to increase the heat exchange area, enhance turbulence, and improve the heat transfer coefficient. The sets of fins are arranged between the two sets of fixed plates. The fins are conical and arranged symmetrically in pairs. Several sets of mounting holes and microgrooves are formed on the fins.

[0008] The present invention is further configured such that: the pipeline includes an inlet pipe for liquid inlet and an outlet pipe for liquid outlet, and a heat exchange pipe is connected between the inlet pipe and the outlet pipe, and the heat exchange pipe is configured with an arc-shaped structure.

[0009] The present invention is further configured such that: the fixing plate is configured as an L-shaped structure, and the two sets of fixing plates are arranged opposite each other with the shorter plates facing the same direction.

[0010] The present invention is further configured such that a set of fixing holes are respectively provided on both sides of the short side of the fixing plate at symmetrical positions.

[0011] The present invention is further configured such that the fixing hole is a circular through hole.

[0012] The present invention is further configured such that the mounting hole is adapted to the shape of the heat exchange tube, and the fins can be sleeved on the heat exchange tube through the mounting hole.

[0013] The present invention is further configured such that several groups of the microgrooves are arranged in parallel.

[0014] In summary, this application includes at least one of the following beneficial technical effects:

[0015] 1. The fins adopt a conical structure and have microgrooves etched on the surface, which can enhance the fluid turbulence effect, reduce the boundary layer thickness, and improve the convective heat transfer coefficient, thereby significantly improving the heat transfer efficiency.

[0016] 2. The symmetrical fin design, with one set of fins facing downwards and the other set of fins facing downwards with their conical surfaces, helps to change the airflow direction and distribute the fluid evenly. At the same time, the heat exchange tube adopts an arc-shaped structure, which reduces local resistance and improves the stability of fluid flow and the uniformity of heat exchange.

[0017] 3. The microgroove structure on the fins can increase the heat exchange area and improve the heat exchange effect without significantly increasing the fluid resistance. At the same time, it reduces the fluid stagnation area and lowers the thermal resistance, making it particularly suitable for high temperature and phase change heat exchange conditions. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a high-efficiency plate fin heat exchanger that can adapt to high temperatures according to this utility model.

[0019] Figure 2 for Figure 1 A structural diagram from another perspective.

[0020] Figure 3 This is a schematic diagram of the structure of the fin in this utility model.

[0021] Figure 4 for Figure 3 A magnified view of a portion of region A in the middle.

[0022] Explanation of reference numerals in the attached diagram: 1. Pipe; 11. Inlet pipe; 12. Outlet pipe; 13. Heat exchange pipe;

[0023] 2. Fixing plate; 21. Fixing holes;

[0024] 3. Fins; 31. Mounting holes; 32. Microgrooves. Detailed Implementation

[0025] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0026] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0027] Example 1, please refer to Figures 1-4 The present invention provides the following technical solution:

[0028] Specifically, it refers to a high-efficiency plate-fin heat exchanger adaptable to high temperatures, including a pipe 1 for isolating and exchanging heat between hot and cold fluids. A set of fixing plates 2 are fitted at the top and bottom of the pipe 1, providing structural support and ensuring the stability of the fins 3. Several sets of fins 3 are fitted onto the pipe 1, increasing the heat exchange area, enhancing turbulence, and improving the heat transfer coefficient. These fins 3 are positioned between the two sets of fixing plates 2. Several sets of mounting holes 31 are formed on the fins 3, facilitating the installation of heat exchange tubes 13 while ensuring smooth fluid flow. Several sets of microgrooves 32 are also formed on the fins 3, increasing fluid turbulence, reducing dead zones, and improving heat exchange efficiency. Furthermore, the presence of the microgrooves 32 improves the wettability of the heat exchange surface, enhancing evaporation / condensation heat exchange capacity, making it particularly suitable for phase change heat exchange conditions.

[0029] Pipeline 1 includes an inlet pipe 11 for liquid inlet and an outlet pipe 12 for liquid outlet. A heat exchange pipe 13 is connected between the inlet pipe 11 and the outlet pipe 12. The heat exchange pipe 13 is configured with an arc-shaped structure. The arc-shaped structure can optimize the fluid flow path, reduce local flow resistance, and improve heat exchange uniformity.

[0030] See Figure 2The fixing plate 2 is designed with an L-shaped structure. Two sets of fixing plates 2 are arranged opposite each other, with the shorter plates facing the same direction. The L-shaped structure can enhance the overall rigidity, adapt to thermal stress changes in high-temperature environments, and prevent deformation. A set of fixing holes 21 are symmetrically opened on both sides of the shorter side of the fixing plate 2. The fixing holes 21 are circular through holes, which are used to facilitate the installation of the heat exchanger and ensure the stability of the overall structure. When the heat exchanger needs to be installed on other equipment, it can be installed by bolts passing through the fixing holes 21.

[0031] See Figure 3 The mounting hole 31 is adapted to the shape of the heat exchange tube 13. The fins 3 can be fitted onto the heat exchange tube 13 through the mounting hole 31, ensuring that there is no loosening or displacement during heat exchange and improving heat exchange stability. The fins 3 are conical, with several groups of fins 3 arranged symmetrically in pairs. The conical structure can change the airflow direction, generating stronger turbulence, reducing the boundary layer thickness, and improving the convective heat transfer coefficient. The conical structure can also optimize the fluid flow path, making heat exchange more uniform and improving overall heat exchange efficiency. Furthermore, conventional flat fins are prone to warping under high-temperature environments. The conical design results in a more uniform stress distribution during thermal expansion, reducing thermal stress concentration and preventing deformation or cracking.

[0032] See Figure 4 Several sets of microgrooves 32 are arranged in parallel. The microgrooves 32 are used to increase fluid turbulence, so that heat exchange is more complete, while reducing the fluid stagnation area and reducing thermal resistance. The microgrooves 32 can also improve the wettability of the heat exchange surface and enhance the evaporation / condensation heat exchange capacity, which is particularly suitable for phase change heat exchange conditions.

[0033] In practical operation, the fins 3 are fitted onto the heat exchange tube 13 through the mounting holes 31 and are adapted to the shape of the heat exchange tube 13 to ensure that there is no loosening or displacement during heat exchange, thus improving heat exchange stability. After installation, the surface of the fins 3 is tightly attached to the heat exchange tube 13, thereby increasing the heat exchange area and improving heat exchange efficiency. During operation, hot and cold fluids enter the interior of the heat exchange tube 13 and the flow channels between the fins 3, respectively. During the flow through the surface of the fins 3, the microgrooves 32 can increase fluid disturbance, making the fluid form stronger turbulence on the surface of the fins 3, reducing the boundary layer thickness, and improving the convective heat transfer coefficient. At the same time, the microgrooves 32 enhance the heat transfer effect without significantly increasing the flow resistance, ensuring the smooth flow of fluid and heat exchange efficiency. When the fluid flows between the fins 3, because the fins 3 are designed with a conical structure, the flow between the fins 3 and the heat exchange tube 13 is relatively smooth. In the fins 3, one set of fins has a flat surface at the bottom, and another set has a conical surface at the bottom. This arrangement can effectively change the airflow direction, generate stronger turbulence, optimize the fluid flow path, make heat exchange more uniform, and improve the overall heat exchange efficiency. In addition, the fixed plate 2 adopts an L-shaped structure, which enhances the overall rigidity, ensures the stability of the heat exchanger in high-temperature environments, and prevents deformation caused by thermal stress. The heat exchange tube 13 adopts an arc-shaped structure, which helps to optimize the fluid flow path, reduce local flow resistance, and improve heat exchange uniformity. At the same time, several sets of microgrooves 32 arranged in parallel on the fins 3 can effectively increase the heat exchange area, improve the fluid disturbance effect, reduce the fluid stagnation area while enhancing heat exchange, reduce thermal resistance, and improve the overall heat exchange efficiency, which is particularly suitable for phase change heat exchange conditions.

[0034] Obviously, the embodiments described above are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

Claims

1. A high-efficiency plate-fin heat exchanger adaptable to high temperatures, characterized in that: The system includes a pipe (1) for isolating and exchanging heat between hot and cold fluids. A set of fixing plates (2) are fitted at the top and bottom of the pipe (1). Several sets of fins (3) are fitted on the pipe (1). The fins (3) are used to increase the heat exchange area and enhance turbulence, thereby improving the heat transfer coefficient. Several sets of fins (3) are arranged between two sets of fixing plates (2). The fins (3) are cone-shaped. Several sets of fins (3) are arranged symmetrically in pairs. Several sets of mounting holes (31) are opened on the fins (3). Several sets of microgrooves (32) are also opened on the fins (3).

2. The high-efficiency plate-fin heat exchanger adaptable to high temperatures according to claim 1, characterized in that: The pipeline (1) includes an inlet pipe (11) for liquid inlet and an outlet pipe (12) for liquid outlet. A heat exchange pipe (13) is connected between the inlet pipe (11) and the outlet pipe (12), and the heat exchange pipe (13) is configured as an arc-shaped structure.

3. The high-efficiency plate-fin heat exchanger adaptable to high temperatures according to claim 1, characterized in that: The fixing plate (2) is configured as an L-shaped structure, with the two sets of fixing plates (2) arranged opposite each other and the short plates facing the same direction.

4. A high-efficiency plate-fin heat exchanger adaptable to high temperatures according to claim 3, characterized in that: The fixing plate (2) has a set of fixing holes (21) at symmetrical positions on both sides of the short side.

5. A high-efficiency plate-fin heat exchanger adaptable to high temperatures according to claim 4, characterized in that: The fixing hole (21) is set as a circular through hole.

6. A high-efficiency plate-fin heat exchanger adaptable to high temperatures according to claim 2, characterized in that: The mounting hole (31) is adapted to the shape of the heat exchange tube (13), and the fins (3) can be fitted onto the heat exchange tube (13) through the mounting hole (31).

7. A high-efficiency plate-fin heat exchanger adaptable to high temperatures according to claim 1, characterized in that: Several groups of the microgrooves (32) are arranged in parallel.

Images