Integrated circular microchannel heat exchanger system

Abstract

The utility model provides a kind of integrated circular microchannel heat exchanger system, including support mechanism and circular microchannel heat exchange component, heat dissipation fan piece respectively installed on the support mechanism;The circular microchannel heat exchange component is surrounded in the four around of heat dissipation fan piece, and the circular microchannel heat exchange component, the support mechanism, the heat dissipation fan piece three enclose and form the cylindrical heat dissipation air cavity of one side closure;The heat dissipation fan piece is used to flow from the cylindrical heat dissipation air cavity outside through the circular microchannel heat exchange component after heat exchange, then, from the cylindrical heat dissipation air cavity inside, it is blown out to outside again.This integrated circular microchannel heat exchanger system can solve the problem of heat exchange dead angle, large air resistance, airflow exchange is not smooth of microchannel heat exchanger.

Description

Technical Field

[0001] This utility model relates to the field of heat exchangers, specifically to an integrated circular microchannel heat exchanger system. Background Technology

[0002] Currently, to address the problems of large size and weight, small heat exchange area, low efficiency, and frequent failures in tube-fin heat exchangers used in refrigerated container refrigeration equipment, a microchannel heat exchanger has been developed for use in refrigerated containers. However, this type of microchannel heat exchanger uses multi-lobed splicing or a U-shaped structure for installation and fixation. Although this reduces the weight of components and increases heat exchange efficiency, dead zones may exist at the splicing or corner positions, easily causing problems such as high air resistance at the heat exchanger inlet and poor airflow, thus affecting heat exchange.

[0003] Patent application CN119687705A discloses a thin-walled microchannel heat exchanger, comprising a cylindrical heat exchanger body. The heat exchanger body has first flow channels at both axial ends and second flow channels on its sides, spaced apart. A first fluid channel between the first flow channels contains a turbulence-inducing protrusion with an elliptical cross-section. The second fluid channel between the second flow channels is divided into multiple layers, each layer with a wavy flow channel wall. Several groups of flow channel walls are provided, with multiple axially extending turbulence-inducing fins evenly distributed on the middle group. This thin-walled microchannel heat exchanger exhibits good heat exchange performance, enhances heat exchange efficiency, is easy to install, and facilitates modular system integration. However, the disclosed structure of this thin-walled microchannel heat exchanger is not integrated with a heat exchange fan, resulting in dead zones in heat exchange, and the airflow rate needs improvement. Utility Model Content

[0004] To address the problems of heat exchange dead zones, high air intake resistance, and poor airflow exchange in microchannel heat exchangers, the technical solution adopted in this utility model is: an integrated circular microchannel heat exchanger system, including a support mechanism, and circular microchannel heat exchange components and heat dissipation fins respectively installed on the support mechanism; The circular microchannel heat exchange component surrounds the heat dissipation fan fins in a circular shape. The circular microchannel heat exchange component, the support mechanism, and the heat dissipation fan fins together form a cylindrical heat dissipation air cavity that is closed on one side. The cooling fan fins are used to draw air from the outside of the cylindrical cooling air cavity through the circular microchannel heat exchange component for heat exchange, and then blow it outward from the inside of the cylindrical cooling air cavity.

[0005] Beneficial effects: Circular heat exchangers have better hydrodynamic performance. Through matching design with fan blades, a circular air cavity is formed inside the heat exchanger, which uniformly guides the external airflow to smoothly enter from the periphery of the heat exchanger for airflow exchange. This effectively reduces the eddies and resistance generated when entering the inner cavity, making the heat exchange more uniform and improving the heat exchange efficiency.

[0006] Based on the above, the circular microchannel heat exchange assembly includes a pair of manifolds, several circular microchannel flat tubes, and several fins. One end of each of the circular microchannel flat tubes is connected to one of the manifolds, and the other end of each of the circular microchannel flat tubes is connected to another manifold. The fins are respectively disposed between two adjacent circular microchannel flat tubes; Several of the circular microchannel flat tubes are evenly arranged along the length of the manifold to form a cavity for accommodating the heat dissipation fan fins.

[0007] Beneficial effects: By adding fins, the heat exchange area and heat exchange efficiency can be increased.

[0008] Based on the above, the support mechanism includes a rear support plate, a limiting ring, and a core lifting plate; One end of the core lifting plate is fixed to the manifold, and the other end of the core lifting plate is fixed to the rear support plate; The limiting ring is sleeved on the outside of the circular microchannel flat tube and fixed to the rear support plate by fasteners, so that the circular microchannel flat tube is pressed tightly on the rear support plate.

[0009] Beneficial effects: The limiting ring can restrict the forward and backward movement of the circular microchannel flat tube, preventing it from swaying or misaligning. Simultaneously, the core lifting plate can be used to lift and fix the tube from above, further increasing the installation stability of the circular microchannel flat tube and the manifold.

[0010] Based on the above, the support mechanism also includes a front support plate and a limiting support bar; The front support plate and the rear support plate are arranged opposite each other, and the inner side of the front support plate is in contact with the outer end of the circular microchannel heat exchange component. The inner side of the front support plate is provided with a limiting groove for supporting the circular microchannel flat tube from the outside. The front support plate is fixed to the rear support plate by the limiting support strip, so that the limiting groove is engaged with the outer wall of the circular microchannel flat tube.

[0011] Beneficial effects: By arranging the front and rear support plates opposite each other, the circular microchannel heat exchange component can be clamped between the front and rear support plates, thus restricting its degrees of freedom. Simultaneously, the limiting groove located on the inner side of the front support plate can be used to lift and hold the circular microchannel flat tube from the bottom and outside, further increasing structural stability.

[0012] Based on the above, the shape of the limiting ring is an annular ring that matches the shape of the circular microchannel flat tube, and the inner wall of the limiting ring can fit against the outer wall of the circular microchannel flat tube.

[0013] Beneficial effects: By matching the limiting ring with the shape of the circular microchannel flat tube, the stability and firmness of the installation can be guaranteed.

[0014] Based on the above, the cooling fan fins are externally connected to a motor.

[0015] Based on the above, the diameter of the heat dissipation fan fin is smaller than the outer diameter of the circular microchannel flat tube.

[0016] This utility model has substantial features and advancements compared to the prior art. Specifically, the integrated circular microchannel heat exchanger system provided by this utility model has the following advantages: (1) Small size and light weight: The circular microchannel heat exchanger has the characteristics of small size, less space occupation and high heat exchange efficiency. The weight is reduced by about 40% compared with the tube-fin type. It can reduce the problems of component settlement, tearing and breakage caused by vibration and impact during equipment operation, improve the safety of equipment operation, and is very suitable for application scenarios with limited space but high heat exchange demand.

[0017] (2) Optimize the airflow path and avoid dead airflow: Compared with the U-shaped heat exchanger, the circular heat exchanger has better hydrodynamic performance. Through the matching design with the fan blades, a circular air cavity is formed inside the heat exchanger, which uniformly guides the external airflow to smoothly enter from the periphery of the heat exchanger for airflow exchange, effectively reducing the eddies and resistance generated when entering the inner cavity, making the heat exchange more uniform and improving the heat exchange efficiency.

[0018] (3) Increase the surface area of ​​the heat exchanger: Compared with the U-shaped design and the multi-lobed spliced ​​heat exchanger, the one-piece molding process of the circular heat exchanger maximizes the heat exchange area, so that under the same working conditions, the circular heat exchanger can conduct more heat; at the same time, this one-piece circular design makes the heat exchanger beautiful and elegant. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the integrated circular microchannel heat exchanger system with a local notch provided by this utility model.

[0020] Figure 2 This is a schematic diagram of the circular microchannel heat exchange component in the integrated circular microchannel heat exchanger system provided by this utility model.

[0021] Figure 3 This is a schematic diagram of the assembly structure of the circular microchannel heat exchange component and the core mounting plate in the integrated circular microchannel heat exchanger system provided by this utility model.

[0022] In the diagram: 1. Rear support plate; 2. Front support plate; 3. Heat dissipation fan fins; 4. Limiting ring; 5. Limiting support strip; 6. Circular microchannel heat exchange component; 7. Core mounting plate; 8. Circular microchannel flat tube; 9. First manifold; 10. Fins; 11. Second manifold; 12. Limiting groove. Detailed Implementation

[0023] The technical solution of this utility model will be further described in detail below through specific embodiments.

[0024] Example 1 This embodiment provides an integrated circular microchannel heat exchanger system, such as Figure 1 , Figure 2 , Figure 3 As shown, it includes a support mechanism, and a circular microchannel heat exchange assembly 6 and a heat dissipation fan 3 respectively installed on the support mechanism.

[0025] The circular microchannel heat exchange component 6 surrounds the heat dissipation fan 3 in a circular shape. The circular microchannel heat exchange component 6, the support mechanism, and the heat dissipation fan 3 together form a cylindrical heat dissipation air cavity that is closed on one side.

[0026] The heat dissipation fan 3 is used to draw air from the outside of the cylindrical heat dissipation cavity through the circular microchannel heat exchange component 6 for heat exchange, and then blow it outward from the inside of the cylindrical heat dissipation cavity.

[0027] Specifically, such as Figure 2 As shown, the circular microchannel heat exchange assembly 6 includes a pair of manifolds, several circular microchannel flat tubes 8, and several fins 10. Based on their distribution, they can be divided into a first manifold 9 and a second manifold 11.

[0028] One end of each of the circular microchannel flat tubes 8 is connected to the first manifold 9, and the other end of each of the circular microchannel flat tubes 8 is connected to the second manifold 11. A fin 10 is disposed between each adjacent pair of circular microchannel flat tubes 8.

[0029] Several circular microchannel flat tubes 8 are evenly arranged along the length of the manifold to form a cavity for accommodating the heat dissipation fan 3.

[0030] In this embodiment, the support mechanism includes a rear support plate 1, a limiting retaining ring 4, and a core lifting plate 7. One end of the core lifting plate 7 is fixed to the manifold, and the other end is fixed to the rear support plate 1. The limiting retaining ring 4 is sleeved on the outside of the circular microchannel flat tube 8 and fixed to the rear support plate 1 by fasteners, so that the circular microchannel flat tube 8 is pressed tightly onto the rear support plate 1.

[0031] Specifically, the heat dissipation fan 3 is externally connected to a motor. The diameter of the heat dissipation fan 3 is smaller than the outer diameter of the circular microchannel flat tube 8.

[0032] Example 2 This embodiment provides an integrated circular microchannel heat exchanger system. The main difference from Embodiment 1 is that, in this embodiment, the support mechanism further includes a front support plate 2 and a limiting support strip 5. The front support plate 2 and the rear support plate 1 are arranged opposite each other. The inner surface of the front support plate 2 is in contact with the outer end of the circular microchannel heat exchange assembly. Specifically, the front support plate 2 has a circular notch corresponding to the cylindrical heat dissipation air cavity.

[0033] The inner side of the front support plate 2 is provided with a limiting groove 12 for supporting the circular microchannel flat tube 8 from the outside. The front support plate 2 is fixed to the rear support plate 1 by the limiting support strip 5 so that the limiting groove 12 is engaged with the outer wall of the circular microchannel flat tube 8.

[0034] Example 3 This embodiment provides an integrated circular microchannel heat exchanger system. The main difference from Embodiment 1 is that in this embodiment, the shape of the limiting ring 4 is an annular shape that matches the shape of the circular microchannel flat tube 8, and the inner sidewall of the limiting ring 4 can fit against the outer sidewall of the circular microchannel flat tube 8.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it; although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this utility model or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the technical solution claimed by this utility model.

Claims

1. An integrated circular microchannel heat exchanger system, characterized in that: Includes a support mechanism, and circular microchannel heat exchange components and heat dissipation fins respectively installed on the support mechanism; The circular microchannel heat exchange component surrounds the heat dissipation fan fins in a circular shape. The circular microchannel heat exchange component, the support mechanism, and the heat dissipation fan fins together form a cylindrical heat dissipation air cavity that is closed on one side. The cooling fan fins are used to draw air from the outside of the cylindrical cooling air cavity through the circular microchannel heat exchange component for heat exchange, and then blow it outward from the inside of the cylindrical cooling air cavity.

2. The integrated circular microchannel heat exchanger system according to claim 1, characterized in that: The circular microchannel heat exchange assembly includes a pair of manifolds, several circular microchannel flat tubes, and several fins. One end of each of the circular microchannel flat tubes is connected to one of the manifolds, and the other end of each of the circular microchannel flat tubes is connected to another manifold. The fins are respectively disposed between two adjacent circular microchannel flat tubes; Several of the circular microchannel flat tubes are evenly arranged along the length of the manifold to form a cavity for accommodating the heat dissipation fan fins.

3. The integrated circular microchannel heat exchanger system according to claim 2, characterized in that: The support mechanism includes a rear support plate, a limiting ring, and a core lifting plate; One end of the core lifting plate is fixed to the manifold, and the other end of the core lifting plate is fixed to the rear support plate; The limiting ring is sleeved on the outside of the circular microchannel flat tube and fixed to the rear support plate by fasteners, so that the circular microchannel flat tube is pressed tightly on the rear support plate.

4. The integrated circular microchannel heat exchanger system according to claim 3, characterized in that: The support mechanism also includes a front support plate and a limiting support bar; The front support plate and the rear support plate are arranged opposite each other, and the inner side of the front support plate is in contact with the outer end of the circular microchannel heat exchange component. The inner side of the front support plate is provided with a limiting groove for supporting the circular microchannel flat tube from the outside. The front support plate is fixed to the rear support plate by the limiting support strip, so that the limiting groove is engaged with the outer wall of the circular microchannel flat tube.

5. The integrated circular microchannel heat exchanger system according to claim 3 or 4, characterized in that: The limiting ring is an annular shape that matches the shape of the circular microchannel flat tube, and the inner wall of the limiting ring can fit against the outer wall of the circular microchannel flat tube.

6. The integrated circular microchannel heat exchanger system according to claim 1, 2, 3, or 4, characterized in that: The cooling fan fins are connected to an external motor.

7. The integrated circular microchannel heat exchanger system according to claim 2, 3, or 4, characterized in that: The diameter of the heat dissipation fan fin is smaller than the outer diameter of the circular microchannel flat tube.

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