Novel air conditioner tube fin heat exchange structure and heat exchanger

Abstract

The invention discloses a novel air conditioner tube fin heat exchange structure and a heat exchanger. The heat exchange structure comprises fins and heat exchange tubes. The fins are of a wave-shaped structure, and the fins are provided with a plurality of installation holes and a plurality of sets of performance improving auxiliary modules. At least one mounting hole and one group of performance improvement auxiliary modules are arranged on each waving section of the fin; each group of performance improvement auxiliary modules comprises a shutter auxiliary module and a turbulent flow auxiliary module, the number of the shutter auxiliary modules in the same group is two, each shutter auxiliary module comprises a plurality of shutter structures, each shutter structure comprises a window and a shutter blade, the shutter blade penetrates through the window, and the turbulent flow auxiliary module is connected with the shutter structure. Louvre blades of the two louver auxiliary modules are oppositely arranged; the turbulent flow auxiliary module is located between the two shutter auxiliary modules, the turbulent flow auxiliary module comprises a plurality of arc-shaped turbulent flow structures, and each arc-shaped turbulent flow structure comprises a plurality of arc-shaped turbulent flow strips. The heat exchanger has the advantages of larger heat exchange area, better heat exchange time, better airflow flowability and the like.

Description

Technical Field

[0001] The present invention relates to an air-conditioning heat exchanger, and in particular to a novel air-conditioning tube-fin heat exchange structure and a heat exchanger. Background Art

[0002] Heat exchangers are an essential component of air conditioners, which exchange heat with external convective air to achieve temperature regulation. Fin-and-tube heat exchangers are widely used in the field of air conditioning technology. Fins, the primary heat exchange element in heat exchangers, have a variety of structures, including traditional straight fins and emerging technologies such as spoiler fins, louvered fins, and sinusoidal fins. Heat exchange tubes also play a crucial role in heat exchangers, primarily used to accommodate high-temperature heat flows. Common heat exchange tubes on the market include elliptical tubes, spiral tubes, and twisted tubes, which increase heat exchange efficiency by increasing the turbulence of the fluid within them.

[0003] Existing tube-fin heat exchangers for air conditioners suffer from poor heat transfer performance. Some have a fin surface heat transfer area that is too small, resulting in low overall heat transfer efficiency. Other designs offer poor resistance to external airflow, resulting in a short heat exchange time between the airflow and the fins. Other designs excessively increase the heat transfer area of the fin surface to improve heat transfer efficiency, but ignore the flow of external air across the fin surface, directly blocking external airflow on the windward side of the fin. This results in poor airflow across the fin surface, preventing the heat exchanged air from being quickly removed. This reduces the temperature difference between the heat flow inside the tube and the airflow outside the tube, resulting in reduced heat transfer efficiency. Furthermore, the uneven flow of gas through each heat exchange tube results in significant differences in heat transfer efficiency between different tubes. Summary of the Invention

[0004] The purpose of the present invention is to overcome the above-mentioned problems and provide a new air-conditioning tube-fin heat exchange structure, which has the advantages of larger heat exchange area, better heat exchange time, and better air flow.

[0005] Another object of the present invention is to provide a heat exchanger.

[0006] The purpose of the present invention is achieved through the following technical solutions:

[0007] A novel air conditioning tube-fin heat exchange structure includes fins and heat exchange tubes;

[0008] The fins are of a wavy structure and are provided with a plurality of mounting holes for mounting heat exchange tubes and a plurality of groups of performance-enhancing auxiliary modules for improving heat exchange performance; each wavy section of the fins is provided with at least one mounting hole and one group of performance-enhancing auxiliary modules;

[0009] Each group of performance improvement auxiliary modules includes a shutter auxiliary module and a spoiler auxiliary module. There are two shutter auxiliary modules in the same group. Each shutter auxiliary module includes multiple shutter structures. Each shutter structure includes a window and window blades. The window blades pass through the windows, and the window blades of the two shutter auxiliary modules are arranged opposite to each other; the spoiler auxiliary module is located between the two shutter auxiliary modules, and the spoiler auxiliary module includes multiple arc-shaped spoiler structures. Each arc-shaped spoiler structure includes multiple arc-shaped spoiler strips evenly distributed along the circumferential direction.

[0010] In a preferred embodiment of the present invention, the heat exchange tubes have a teardrop-shaped cross-section and a wavy structure along their extension. Thus, when external air flows through the tube-fin heat exchanger, the teardrop-shaped tube tips, similar to the principle of a ship, naturally divert the oncoming airflow, allowing the external airflow to flow evenly across the heat exchange tubes without increasing external airflow resistance.

[0011] In a preferred embodiment of the present invention, the heat exchange tubes and performance-enhancing auxiliary modules are arranged in two rows along the wave-shaped extension of the fins: one row of heat exchange tubes and performance-enhancing auxiliary modules is located in the concave section of the fin wave, and the other row of heat exchange tubes and performance-enhancing auxiliary modules is located in the protruding section of the fin wave. With this structure, the staggered louver structure can effectively block external airflow, thereby extending the heat exchange time between the airflow and the fins.

[0012] In a preferred embodiment of the present invention, the cross-section of the window blade is S-shaped, with the ends of the window blade having a larger curvature and the middle portion having a smaller curvature. This can obtain a larger heat exchange area, increase the heat exchange amount, and improve the heat exchange efficiency.

[0013] In a preferred embodiment of the present invention, the multiple shutter structures of the same shutter auxiliary module are divided into at least two rows, and each row includes at least two shutter structures.

[0014] Furthermore, as the louver structure approaches the corresponding auxiliary louver module, the opening of the louver blades increases row by row, the height of the louver blades increases row by row, and the number of louver blades decreases row by row. This prolongs the heat exchange time between the external airflow and the fins while ensuring smooth airflow.

[0015] Furthermore, the shutter structures of the same shutter auxiliary module are provided with three rows, with a total of nine shutter structures.

[0016] Furthermore, the window is an oblong hole structure, and arc-shaped air guides are respectively provided above the two ends of the window. A contraction and expansion channel is formed between the arc-shaped air guides of two adjacent windows. In this way, it can ensure that the external fluid flows through the fin surface quickly and smoothly, so that the fluid that has achieved heat exchange can leave the fin surface in time, thereby ensuring heat exchange efficiency.

[0017] In a preferred embodiment of the present invention, three arc-shaped spoiler structures are provided, and each arc-shaped spoiler structure includes four arc-shaped spoiler strips.

[0018] In a preferred embodiment of the present invention, the outer side of the arc-shaped spoiler strip is a concave structure, and the inner side of the arc-shaped spoiler strip is a convex structure, thereby further increasing the heat exchange area.

[0019] In a preferred embodiment of the present invention, each arc-shaped spoiler structure is open on all sides, and each arc-shaped spoiler structure has a contraction-expansion structure. In addition to its blocking function, it can also store a small amount of airflow to extend the heat exchange time.

[0020] A heat exchanger comprises the novel air-conditioning tube-fin heat exchange structure.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. During operation, after the fluid enters the fin area and reaches the teardrop-shaped heat exchange tube, the side of the heat exchange tube with a smaller curvature is equivalent to the principle of a ship, which can naturally divert the oncoming fluid, allowing the fluid to flow evenly between the heat exchange tubes, thereby improving the heat exchange efficiency. In addition, the teardrop-shaped heat exchange tube will not increase the fluid resistance while diverting the fluid.

[0023] 2. The periodic concave and convex heat exchange tube structure increases the heat exchange area with the external airflow while also enhancing the disturbance of the internal heat flow, further improving the heat exchange efficiency.

[0024] 3. When the fluid flows through the fin surface, the staggered louver structure can effectively block the external airflow to extend the heat exchange time between the airflow and the fins.

[0025] 4. The heat exchange area between the "S"-shaped louver window fins and the air is larger, the heat exchange amount is increased, and the heat exchange efficiency is improved.

[0026] 5. The louver-spoiler hybrid structure not only prolongs the heat exchange time, but also greatly increases the heat exchange area between the fins and the external airflow.

[0027] 6. The contraction structure formed by the stretching of the inner wall of the straight slot can ensure that the external fluid flows through the fin surface quickly and smoothly through fluid simulation, so that the fluid that has achieved heat exchange can leave the fin surface in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the three-dimensional structure of the novel air-conditioning tube-fin heat exchange junction of the present invention.

[0029] Figure 2 It is a top view of the novel air-conditioning tube-fin heat exchange junction of the present invention.

[0030] Figure 3 for Figure 1 Magnified view of the X in .

[0031] Figure 4 for Figure 3 Enlarged view of Y in .

[0032] Figure 5 It is a side view of the blind auxiliary module of the present invention.

[0033] Figure 6 This is a comparison chart of the drag factors (f) of the louver-spoiler hybrid fin of the present invention, ordinary spoiler fins, and ordinary louver fins. DETAILED DESCRIPTION

[0034] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described below in conjunction with embodiments and drawings, but the embodiments of the present invention are not limited thereto.

[0035] Combine Figure 1-Figure 3 The heat exchanger of this embodiment includes a new air-conditioning tube-fin heat exchange structure, which includes a fin 1 and a heat exchange tube 2; the fin 1 is a wavy structure, and the fin 1 is provided with a plurality of mounting holes for mounting the heat exchange tube 2 and a plurality of groups of performance-enhancing auxiliary modules for improving the heat exchange performance; each wavy section of the fin 1 is provided with at least one mounting hole and a group of performance-enhancing auxiliary modules; each group of performance-enhancing auxiliary modules includes a louver auxiliary module and a spoiler auxiliary module, and the same group of louver auxiliary modules is provided with two, each louver auxiliary module includes a plurality of louver structures, each louver structure includes a window 3 and a window blade 4, the window blade 4 passes through the window 3, and the window blades 4 of the two louver auxiliary modules are arranged opposite to each other; the spoiler auxiliary module is located between the two louver auxiliary modules, and the spoiler auxiliary module includes a plurality of arc-shaped spoiler structures, and each arc-shaped spoiler structure includes a plurality of arc-shaped spoiler strips 5 evenly distributed along the circumferential direction.

[0036] Combine Figure 1-Figure 3The cross-section of the heat exchange tubes 2 is a teardrop-shaped structure, and in the direction of extension, the heat exchange tubes 2 are wavy. Thus, when external air flows through the tube-fin heat exchanger, the teardrop-shaped tube tips, similar to the principle of a ship, naturally split the oncoming airflow, allowing the external airflow to flow evenly among the heat exchange tubes 2 without increasing external airflow resistance.

[0037] Combine Figure 1-Figure 3 Along the wave-shaped extension direction of the fin 1, the heat exchange tubes 2 and performance-enhancing auxiliary modules are arranged in two rows: one row of heat exchange tubes 2 and performance-enhancing auxiliary modules is located in the concave section of the wave-shaped fin 1, and the other row of heat exchange tubes 2 and performance-enhancing auxiliary modules is located in the protruding section of the wave-shaped fin 1. With this structure, the staggered louver structure can effectively block external airflow, thereby extending the heat exchange time between the airflow and the fin 1.

[0038] Combine Figure 5 The cross section of the window blade 4 is S-shaped, with the two ends of the window blade 4 having a larger curvature and the middle part having a smaller curvature. This can obtain a larger heat exchange area, increase the heat exchange amount, and improve the heat exchange efficiency.

[0039] Combine Figure 5 The multiple shutter structures of the same shutter auxiliary module are divided into at least two rows, and each row includes at least two shutter structures.

[0040] Furthermore, as the louver blades 4 of the louver structure approach the corresponding other auxiliary louver module, the opening of the louver blades 4 increases row by row, the height of the louver blades 4 increases row by row, and the number of louver blades 4 decreases row by row. This prolongs the heat exchange time between the external airflow and the fins 1 while ensuring smooth airflow.

[0041] Furthermore, the shutter structures of the same shutter auxiliary module are provided with three rows, with a total of nine shutter structures.

[0042] Combine Figure 4 The window 3 is an oblong hole structure, and an arc-shaped air guide 6 is provided above the two ends of the window 3. A contraction and expansion channel 7 is formed between the arc-shaped air guide fins 6 of two adjacent windows 3. In this way, it can ensure that the external fluid flows through the surface of the fin 1 quickly and smoothly, so that the fluid that has achieved heat exchange leaves the surface of the fin 1 in time, thereby ensuring the heat exchange efficiency.

[0043] Combine Figure 1-Figure 3 There are three arc-shaped spoiler structures, and each arc-shaped spoiler structure includes four arc-shaped spoiler strips 5.

[0044] Combine Figure 1-Figure 3 The outer side of the arc-shaped spoiler strip 5 is a concave structure, and the inner side of the arc-shaped spoiler strip 5 is a convex structure, which further increases the heat exchange area.

[0045] Combine Figure 1-Figure 3 Each arc-shaped spoiler structure has openings on the front, back, left, and right sides, and exhibits a contraction-expansion structure. Besides its blocking effect, it can also store a small amount of airflow inside to extend heat exchange time.

[0046] Combine Figure 1-Figure 3 The working principle of the new air conditioning tube-fin heat exchange structure of this embodiment is:

[0047] When the external airflow flows through the tube-fin heat exchanger, the tip of the teardrop-shaped heat exchange tube 2 is similar to the principle of a ship, which can naturally divert the oncoming airflow, so that the external airflow can flow evenly between each heat exchange tube 2 without increasing the external airflow resistance.

[0048] When the external airflow flows on the surface of the fin 1, the hybrid structure of the louver structure and the arc-shaped spoiler structure set on the fin 1 increases the heat exchange area with the external airflow, while also blocking part of the external airflow, thereby extending the heat exchange time between the fin 1 and the external airflow.

[0049] Furthermore, the arc-surface tensile structures provided on the inner walls of two adjacent straight notches further form a contraction-expansion channel, allowing external airflow to pass smoothly.

[0050] The above is a preferred embodiment of the present invention, but the embodiment of the present invention is not limited to the above content. Any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principles of the present invention should be considered as equivalent replacement methods and are included in the scope of protection of the present invention.

Claims

1. A novel air conditioning tube-fin heat exchange structure, comprising fins and heat exchange tubes; characterized in that: The fins are of a wavy structure and are provided with a plurality of mounting holes for mounting heat exchange tubes and a plurality of groups of performance-enhancing auxiliary modules for improving heat exchange performance; each wavy section of the fins is provided with at least one mounting hole and one group of performance-enhancing auxiliary modules; Each group of performance improvement auxiliary modules includes a shutter auxiliary module and a spoiler auxiliary module. There are two shutter auxiliary modules in the same group. Each shutter auxiliary module includes multiple shutter structures. Each shutter structure includes a window and window blades. The window blades pass through the windows, and the window blades of the two shutter auxiliary modules are arranged opposite to each other; the spoiler auxiliary module is located between the two shutter auxiliary modules, and the spoiler auxiliary module includes multiple arc-shaped spoiler structures. Each arc-shaped spoiler structure includes multiple arc-shaped spoiler strips evenly distributed along the circumferential direction.

2. The novel air conditioning tube-fin heat exchange structure according to claim 1 is characterized in that: The cross section of the heat exchange tube is a water drop-shaped structure, and in the extension direction of the heat exchange tube, the heat exchange tube is a wave-shaped structure.

3. The novel air conditioning tube-fin heat exchange structure according to claim 1 is characterized in that: Along the wave extension direction of the fin, the heat exchange tubes and performance improvement auxiliary modules are divided into two rows, one row of heat exchange tubes and performance improvement auxiliary modules are arranged in the wave concave section of the fin, and the other row of heat exchange tubes and performance improvement auxiliary modules are arranged in the wave protruding section of the fin.

4. The novel air conditioning tube-fin heat exchange structure according to claim 1 is characterized in that: The cross section of the window blade is S-shaped, and the curvature of the two ends of the window blade is larger, and the curvature of the middle part is smaller.

5. The novel air conditioning tube-fin heat exchange structure according to claim 1 is characterized in that: The multiple shutter structures of the same shutter auxiliary module are divided into at least two rows, and each row includes at least two shutter structures.

6. The novel air-conditioning tube-fin heat exchange structure according to claim 5 is characterized in that: Along the direction approaching the corresponding other shutter auxiliary module, the opening of the window blades of the shutter structure becomes larger row by row, the height of the window blades of the shutter structure increases row by row, and the number of the window blades of the shutter structure becomes smaller row by row.

7. The novel air-conditioning tube-fin heat exchange structure according to claim 5 is characterized in that: The shutter structures of the same shutter auxiliary module are provided with three rows, with a total of nine shutter structures.

8. The novel air-conditioning tube-fin heat exchange structure according to claim 1 is characterized in that: The window is an oblong hole structure, and arc-shaped air guide plates are respectively provided above both ends of the window, and a contraction and expansion channel is formed between the arc-shaped air guide plates of two adjacent windows.

9. The novel air-conditioning tube-fin heat exchange structure according to claim 1 is characterized in that: There are three arc-shaped spoiler structures, each of which includes four arc-shaped spoiler strips; The outer side of the arc-shaped spoiler strip is a concave structure, and the inner side of the arc-shaped spoiler strip is a convex structure; Each arc-shaped spoiler structure is open at the front, back, left and right sides, and each arc-shaped spoiler structure is a contraction-expansion structure at the front, back, left and right sides.

10. A heat exchanger, characterized in that: The invention comprises the novel air-conditioning tube-fin heat exchange structure according to any one of claims 1 to 9.

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