Efficient heat exchanger fin for air conditioning unit

Abstract

The utility model discloses an efficient heat exchanger fin for an air conditioning unit. The efficient heat exchanger fin is large in heat exchange area, long in heat exchange time, low in fluid side resistance and good in heat exchange effect. Comprising fins and heat exchange tubes, the fins are corrugated fins, heat exchange holes, turbulent flow holes and turbulent flow blocks are arranged on the fins, the turbulent flow holes are located at the front ends of the heat exchange holes, the turbulent flow blocks are arranged between every two adjacent heat exchange holes, the thickness of the fins is gradually increased in the flowing direction of fluid, and the turbulent flow blocks are arranged between the two adjacent heat exchange holes. The two ends of each fin are further provided with flow guide channels, and the width of each flow guide channel is gradually reduced from the two ends to the middle.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioning, in particular to a high-efficiency heat exchanger fin for an air conditioning unit. Background Art

[0002] The heat exchanger is an important part of the air conditioner. The air conditioner realizes the function of regulating temperature by heat exchange with the surrounding air through the heat exchanger. The fin heat exchanger is widely used in the field of air conditioning technology. As the main heat transfer component in the heat exchanger, the fin has various unit forms, such as straight fins, serrated fins, louvered fins, porous fins, corrugated fins, etc. Different types of fins have different heat transfer characteristics and are suitable for different heat exchange objects. The optimal design or selection principle is to have a higher convective heat transfer coefficient. The high-efficiency fin heat exchanger is a heat exchange device that uses fins to increase the heat exchange surface area and thus improve the heat exchange efficiency. It is usually composed of a series of neatly arranged fins, so that the fluid can fully contact the fin surface when flowing inside the heat exchanger, thereby achieving efficient heat exchange. The design and development process of the high-efficiency fin heat exchanger needs to consider multiple factors, including fin shape, material selection, fin spacing, fluid flow characteristics, etc. Based on this, the inventor designs a high-efficiency heat exchanger fin for an air conditioning unit. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the defects of the existing technical problems and provide a high-efficiency heat exchanger fin for an air-conditioning unit, which has a large heat exchange area, a long heat exchange time, low fluid side resistance and good heat exchange effect.

[0004] In order to solve the above technical problems, the technical solution of the utility model is: including fins and heat exchange tubes, the fins are corrugated fins, and the fins are provided with heat exchange holes, spoiler holes and spoiler blocks, the spoiler holes are located at the front ends of the heat exchange holes, and the spoiler blocks are arranged between two adjacent heat exchange holes. The thickness of the fins gradually increases along the flow direction of the fluid, and guide channels are also provided at both ends of the fins, and the width of the guide channels gradually decreases from the two ends to the middle.

[0005] Furthermore, the heat exchange holes are provided in two rows, and the two rows of heat exchange holes are staggered.

[0006] Furthermore, the heat exchange holes in the first row are opened at the protrusions of the fins, and the heat exchange holes in the second row are opened at the recesses of the fins.

[0007] Furthermore, an annular hoop corresponding to the heat exchange tube is provided at the heat exchange hole.

[0008] Furthermore, the annular hoop includes a straight tube and a horn tube which are fixedly connected.

[0009] Furthermore, the straight tube is fixedly connected to the fin and the inner diameter of the straight tube corresponds to the outer diameter of the heat exchange tube.

[0010] Furthermore, the diameter of one end of the horn corresponds to that of the straight tube and is fixedly connected to the straight tube, and the diameter of one end of the horn away from the straight tube is slightly larger than the diameter of the straight tube.

[0011] Furthermore, the upper end surface of the spoiler is an arc-shaped surface.

[0012] By adopting the above technical solution, the utility model has the following beneficial effects:

[0013] 1. The inner wall of the annular hoop is in close contact with the outer wall of the heat exchange tube, thereby increasing the contact area between the heat exchange tube and the fin, and at the same time improving the firmness of the connection between the heat exchange tube and the fin;

[0014] 2. During operation, when the fluid enters between the fins and reaches the spoiler holes, the spoiler holes can divert the fluid, so that the fluid flows evenly between the heat exchange tubes, improving the heat exchange effect. At the same time, the spoiler holes will not increase the fluid resistance while diverting the fluid, further ensuring the heat exchange efficiency;

[0015] 3. The spoiler blocks guide the fluid and increase the heat exchange time. At the same time, the heat exchange area can be increased by setting the spoiler blocks. By increasing the heat exchange time and area, the heat exchange efficiency can be greatly improved. Since the upper end surface of the spoiler block is an arc surface, the resistance of the fluid flow can be reduced;

[0016] 4. When the fluid flows through the guide channel, its flow velocity increases first and then decreases. While ensuring that the fluid velocity does not decrease after flowing through the guide channel, the fluid can flow smoothly through the fin surface, reducing the fluid side resistance, improving the heat exchange efficiency and reducing energy consumption;

[0017] 5. The fins are corrugated, which can increase the surface area and enhance the convective heat transfer. At the same time, the thickness of the fins gradually increases along the flow direction of the fluid, so that the flow velocity of the fluid will not decrease after passing through the fins, and at the same time, it plays a role in reducing the side resistance of the fluid, thereby achieving the purpose of reducing the energy consumption of the fan. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of the high-efficiency heat exchanger fin for the air-conditioning unit of the utility model (the arrow in the figure indicates the flow direction of the fluid);

[0019] Figure 2 for Figure 1 A top view of the fluid (the arrow in the figure indicates the flow direction of the fluid);

[0020] Figure 3 for Figure 2 A cross-sectional view along the AA direction;

[0021] Figure 4 for Figure 3 Enlarged view of part B in .

[0022] Figure numerals: 1, fin; 2, heat exchange tube; 3, heat exchange hole; 4, spoiler hole; 5, spoiler block; 6, guide channel; 7, annular hoop; 8, straight tube; 9, horn tube. DETAILED DESCRIPTION

[0023] In order to make the content of the utility model more clearly understood, the utility model is further described in detail below based on specific embodiments and in conjunction with the accompanying drawings.

[0024] like Figure 1-4 As shown, in this embodiment, a high-efficiency heat exchanger fin for an air-conditioning unit is provided, including a fin 1 and a heat exchange tube 2 passing through the fin 1. The fin 1 adopts a corrugated fin 1, and is provided with a heat exchange hole 3, a spoiler hole 4 and a spoiler block 5. The spoiler hole 4 is located at the front end of each heat exchange hole 3, and the spoiler block 5 is arranged between two adjacent heat exchange holes 3. The thickness of the fin 1 gradually increases along the flow direction of the fluid.

[0025] like Figure 1-4 As shown, in this embodiment, both ends of the fin 1 are further provided with guide channels 6, which are through grooves opened on the fin 1. The width of the guide channel 6 gradually decreases from both ends to the middle, so that when the fluid flows through the guide channel 6, its flow velocity first increases and then decreases. While ensuring that the velocity of the fluid does not decrease after flowing through the guide channel 6, the fluid can flow smoothly through the surface of the fin 1, reducing the fluid side resistance, improving the heat exchange efficiency, and reducing energy consumption.

[0026] like Figure 1-4 As shown, in this embodiment, the heat exchange holes 3 are used for the heat exchange tubes 2 to pass through. The heat exchange holes 3 are provided in two rows, and the two rows of heat exchange holes 3 are staggered. Specifically, the first row of heat exchange holes 3 is opened at the protrusion of the fin 1, and the second row of heat exchange holes 3 is opened at the concave part of the fin 1. The heat exchange holes 3 are provided with an annular hoop 7 corresponding to the heat exchange tube 2. After the heat exchange tube 2 passes through the fin 1 and the expansion tube is completed, the inner wall of the annular hoop 7 is tightly attached to the outer wall of the heat exchange tube 2, thereby increasing the contact area between the heat exchange tube 2 and the fin 1, and also improving the firmness of the connection between the heat exchange tube 2 and the fin 1. In order to facilitate the insertion of the tube, the annular hoop 7 is composed of two sections. The first section is a straight tube 8 fixedly connected to the fin 1 and the inner diameter is corresponding to the outer diameter of the heat exchange tube 2. The second section is a section away from the fin 1, which is a trumpet tube 9. The diameter of the end of the trumpet tube 9 with a smaller diameter corresponds to the straight tube 8 and is fixedly connected to the straight tube 8. The diameter of the end of the trumpet tube 9 away from the straight tube 8 is slightly larger than the diameter of the straight tube 8.

[0027] At the same time, if Figure 1-4As shown, the design of the annular hoop 7 can also ensure that a certain gap is maintained between two adjacent fins 1. The height of the corresponding annular hoop 7 is designed according to demand to ensure a reasonable spacing between the fins 1. Appropriate spacing between the fins 1 can increase the convective heat transfer coefficient, improve the heat transfer efficiency, and achieve the best heat transfer effect.

[0028] like Figure 1-4 As shown, in this embodiment, the spoiler hole 4 is arranged in front of the heat exchange hole 3. After the fluid enters between the fins 1 and reaches the spoiler hole 4, the spoiler hole 4 can divert the fluid, so that the fluid flows evenly between the heat exchange tubes 2, thereby improving the heat exchange effect. At the same time, the spoiler hole 4 will not increase the fluid resistance while diverting the fluid, thereby further ensuring the heat exchange efficiency.

[0029] like Figure 1-4 As shown, in the present embodiment, a plurality of spoiler blocks 5 are provided, and the spoiler blocks 5 are distributed all over the surface of the fin 1. The spoiler blocks 5 guide the fluid and increase the heat exchange time. At the same time, the heat exchange area can be increased by setting the spoiler blocks 5. By increasing the time and area of ​​the heat exchange, the efficiency of the heat exchange can be greatly improved.

[0030] like Figure 1-4 As shown, in this embodiment, in order to reduce the resistance of fluid flow, the upper end surface of the spoiler 5 is an arc-shaped surface.

[0031] like Figure 1-4 As shown, in this embodiment, the fin 1 adopts a corrugated fin 1, which can increase the surface area and enhance the convective heat transfer. At the same time, the thickness of the fin 1 gradually increases along the flow direction of the fluid, so that the flow velocity of the fluid will not decrease after flowing through the fin 1, and at the same time, it plays a role in reducing the side resistance of the fluid, thereby achieving the purpose of reducing the energy consumption of the fan.

[0032] In actual operation, the heat exchange tube 2 is passed through the heat exchange hole 3 and fixed on the fin 1 through the expansion tube. After the expansion tube, the inner wall of the annular hoop 7 is tightly attached to the outer wall of the heat exchange tube 2, thereby increasing the contact area between the heat exchange tube 2 and the fin 1, and at the same time, improving the firmness of the connection between the heat exchange tube 2 and the fin 1; in operation, after the fluid enters between the fins 1 and reaches the spoiler hole 4, the spoiler hole 4 can divert the fluid, so that the fluid flows evenly between the heat exchange tubes 2, thereby improving the heat exchange effect. At the same time, the spoiler hole 4 will not increase the fluid resistance while diverting the flow, thereby further ensuring the heat exchange efficiency; when the fluid flows, the spoiler block 5 plays a role of guiding the fluid. The heat exchange time is increased. At the same time, the heat exchange area can be increased by setting the spoiler 5. By increasing the time and area of ​​heat exchange, the efficiency of heat exchange can be greatly improved. Since the upper end surface of the spoiler 5 is an arc-shaped surface, the resistance of fluid flow can be reduced. The two ends of the fin 1 are also provided with a guide channel 6. When the fluid flows through the guide channel 6, its flow rate increases first and then decreases. While ensuring that the speed of the fluid will not decrease after flowing through the guide channel 6, the fluid can flow smoothly through the surface of the fin 1, reducing the resistance on the fluid side, improving the heat exchange efficiency, and reducing energy consumption. The fin 1 adopts a corrugated fin 1, which can increase the surface area and enhance convective heat transfer. At the same time, the thickness of the fin 1 gradually increases along the flow direction of the fluid, so that the flow rate of the fluid will not decrease after flowing through the fin 1, and at the same time, it plays a role in reducing the resistance on the fluid side, achieving the purpose of reducing the energy consumption of the fan.

[0033] The specific embodiments described above further illustrate the technical problems, technical solutions and beneficial effects solved by the present invention. It should be understood that the above are only specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A high-efficiency heat exchanger fin for an air conditioning unit, comprising a fin (1) and a heat exchange tube (2), characterized in that: The fin (1) is a corrugated fin (1), and is provided with a heat exchange hole (3), a spoiler hole (4) and a spoiler block (5), wherein the spoiler hole (4) is located at the front end of the heat exchange hole (3), and the spoiler block (5) is arranged between two adjacent heat exchange holes (3). The thickness of the fin (1) gradually increases along the flow direction of the fluid, and guide channels (6) are also provided at both ends of the fin (1), and the width of the guide channel (6) gradually decreases from the two ends to the middle.

2. The high-efficiency heat exchanger fin for an air-conditioning unit according to claim 1, characterized in that: The heat exchange holes (3) are provided in two rows, and the two rows of heat exchange holes (3) are arranged in a staggered manner.

3. The high-efficiency heat exchanger fin for an air conditioning unit according to claim 2, characterized in that: The first row of heat exchange holes (3) are opened at the protrusions of the fins (1), and the second row of heat exchange holes (3) are opened at the recesses of the fins (1).

4. The high-efficiency heat exchanger fin for an air conditioning unit according to claim 1, characterized in that: An annular hoop (7) corresponding to the heat exchange tube (2) is provided at the heat exchange hole (3).

5. The high-efficiency heat exchanger fin for an air-conditioning unit according to claim 4, characterized in that: The annular hoop (7) comprises a straight tube (8) and a horn tube (9) which are fixedly connected.

6. The high-efficiency heat exchanger fin for an air conditioning unit according to claim 5, characterized in that: The straight tube (8) is fixedly connected to the fin (1), and the inner diameter of the straight tube (8) corresponds to the outer diameter of the heat exchange tube (2).

7. The high-efficiency heat exchanger fin for an air conditioning unit according to claim 6, characterized in that: The diameter of one end of the horn (9) corresponds to that of the straight tube (8) and is fixedly connected to the straight tube (8); the diameter of one end of the horn (9) away from the straight tube (8) is greater than the diameter of the straight tube (8).

8. The high-efficiency heat exchanger fin for an air conditioning unit according to claim 1, characterized in that: The upper end surface of the spoiler block (5) is an arc-shaped surface.

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