Large-temperature-difference surface air cooler

Abstract

The utility model discloses a large-temperature-difference surface air cooler, which belongs to the technical field of refrigeration equipment and comprises a frame, a corrugated fin group and at least two heat exchange copper pipes, the heat exchange copper pipes are arranged at equal intervals in the Y-axis direction. The corrugated fin set is arranged on the outer side of the heat exchange copper pipe and connected with the outer wall of the heat exchange copper pipe. A thread structure is arranged on the inner wall of the heat exchange copper pipe; by arranging the corrugated fin set and the heat exchange copper pipe with the inner wall provided with the threads, the heat exchange efficiency of the surface air cooler can be improved; compared with an existing surface air cooler adopting linear fins and a heat exchange copper pipe with a smooth inner wall, the corrugated fin set and the heat exchange copper pipe with the threads can increase the contact area between the surface air cooler and air to be dehumidified and the contact area between the surface air cooler and internal chilled water respectively, and therefore the chilled water with the slow flowing speed can take away heat after absorbing a large amount of heat; therefore, the cooling effect is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of refrigeration equipment, and particularly relates to a large temperature difference surface cooler. Background Art

[0002] The core heat exchange components of existing surface coolers are usually fins and heat exchange copper tubes. Multiple aluminum thin straight plate fins stacked according to fixed gaps and heat exchange copper tubes with smooth inner walls cooperate with each other to achieve the effect of cooling the air to be dehumidified.

[0003] However, in actual use, existing surface coolers often have a series of problems that affect the refrigeration effect, such as small unit heat exchange area, low heat exchange efficiency and large chilled water flow. Utility Model Content

[0004] The technical problem to be solved by the utility model is: how to provide a surface cooler capable of achieving a large temperature difference cooling effect.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0006] A large temperature difference surface cooler comprises a frame, a corrugated fin group arranged on the frame and at least two heat exchange copper tubes extending in an S-shaped circuitous manner;

[0007] The heat exchange copper tubes are arranged at equal intervals along the Y-axis direction;

[0008] The corrugated fin group is arranged on the outside of the heat exchange copper tube and connected to the outer wall of the heat exchange copper tube;

[0009] The inner wall of the heat exchange copper tube is provided with a thread structure.

[0010] Further, along the X-axis direction, the corrugated fin group includes corrugated fin strips arranged at equal intervals;

[0011] Along the Y-axis direction, the corrugated fins form a sawtooth structure.

[0012] Furthermore, the spacing between each of the corrugated fin strips is 1.5 mm to 5 mm.

[0013] Further, the corrugated fin strip comprises a first fin segment and a second fin segment;

[0014] Along the Y-axis direction, the first wing segments and the second wing segments are alternately arranged in sequence to form a sawtooth structure.

[0015] Furthermore, the angle between the first wing segment and the second wing segment is 60° to 120°.

[0016] Furthermore, it also includes a chilled water main inlet pipe and a chilled water main return pipe;

[0017] The water inlet of each heat exchange copper tube is connected to the main water inlet pipe of chilled water;

[0018] The water outlet of each heat exchange copper tube is connected to the main return pipe of chilled water.

[0019] The beneficial effect of the utility model is that the large temperature difference surface cooler provided by the utility model can improve the heat exchange efficiency of the surface cooler by arranging a corrugated fin group and a heat exchange copper tube with a threaded inner wall without changing the size of the surface cooler, that is, the corrugated fin group and the heat exchange copper tube with a thread can respectively increase the contact area between the surface cooler and the air to be dehumidified and the internal chilled water, so that the chilled water with a slow flow rate can take away the heat after absorbing a large amount of heat, thereby improving the cooling effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The figure is a front view of a large temperature difference cooler according to a specific embodiment of the utility model;

[0021] Figure 2 The figure is a left perspective view of a large temperature difference cooler according to a specific embodiment of the utility model;

[0022] Figure 3 Shown is a front view of a corrugated fin strip according to a specific embodiment of the utility model;

[0023] Figure 4 Shown is a partial cross-sectional view of a heat exchange copper tube according to a specific embodiment of the utility model;

[0024] Figure 5 Shown is a partial cross-sectional view of a thread structure of a specific embodiment of the utility model;

[0025] Description of labels:

[0026] 1. Framework;

[0027] 2. corrugated fin group; 21. corrugated fin strip; 211. first fin segment; 212. second fin segment;

[0028] 3. Heat exchange copper tube; 31. Threaded structure;

[0029] 4. Chilled water main inlet pipe;

[0030] 5. Chilled water main return pipe. DETAILED DESCRIPTION

[0031] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in conjunction with the implementation modes and the accompanying drawings.

[0032] The most critical concept of the utility model is that by providing a corrugated fin group and a heat exchange copper tube with a threaded inner wall, the heat exchange efficiency of the surface cooler can be improved, that is, the corrugated fin group and the heat exchange copper tube with a threaded inner wall can respectively increase the contact area between the surface cooler and the air to be dehumidified and the internal chilled water, so that the chilled water with a slow flow rate can absorb a large amount of heat and then take away the heat, thereby improving the cooling effect.

[0033] Please refer to Figures 1 to 5 The large temperature difference cooler provided by the utility model comprises a frame 1, a corrugated fin group 2 arranged on the frame 1 and at least two heat exchange copper tubes 3 extending in an S-shaped circuitous manner;

[0034] The heat exchange copper tubes 3 are arranged at equal intervals along the Y-axis direction;

[0035] The corrugated fin group 2 is arranged on the outside of the heat exchange copper tube 3 and connected to the outer wall of the heat exchange copper tube 3;

[0036] The inner wall of the heat exchange copper tube 3 is provided with a thread structure 31 .

[0037] Specifically, the tooth shape of the thread structure 31 can be changed according to actual needs, for example, the tooth shape can be a sawtooth thread or a wavy thread.

[0038] From the above description, it can be seen that the beneficial effects of the utility model are: providing a large temperature difference surface cooler, by arranging a corrugated fin group 2 and a heat exchange copper tube 3 with a threaded inner wall, the heat exchange efficiency of the surface cooler can be improved; compared with the existing surface cooler using straight fins and a heat exchange copper tube with a smooth inner wall, the corrugated fin group 2 and the heat exchange copper tube 3 with a thread can respectively increase the contact area between the surface cooler and the air to be dehumidified and the internal chilled water, so that the chilled water with a slow flow rate can take away the heat after absorbing a large amount of heat, thereby improving the cooling effect.

[0039] Further, along the X-axis direction, the corrugated fin group 2 includes corrugated fin strips 21 arranged at equal intervals;

[0040] Along the Y-axis direction, the corrugated fins form a sawtooth structure.

[0041] Further, the spacing between each corrugated fin strip 21 is 1.5 mm to 5 mm. Preferably, the spacing between each corrugated fin strip 21 is 1.5 mm, 1.8 mm, 2 mm, 2.5 mm, 2.8 mm, 3 mm, 3.2 mm, 3.5 mm, 4 mm, 4.5 mm or 5 mm.

[0042] Further, the corrugated fin strip 21 includes a first fin section 211 and a second fin section 212;

[0043] Along the Y-axis direction, the first fin segments 211 and the second fin segments 212 are alternately arranged in sequence to form a sawtooth structure.

[0044] Furthermore, the angle between the first wing segment 211 and the second wing segment 212 is 85° to 100°. Figure 3 Preferably, the angle between the first wing segment 211 and the second wing segment 212 may be 85°, 86°, 87°, 88°, 89°, 90°, 91°, 92°, 93°, 94°, 95°, 96°, 97°, 98°, 99° or 100°.

[0045] From the above description, it can be seen that the design has made specific modifications to the composition structure and size of the corrugated fin group 2. Compared with the traditional straight fins, while ensuring that the total length of each corrugated fin strip 21 remains unchanged, the corrugated fin strip 21 is adjusted to a style with a serrated structure, thereby effectively increasing the unit contact area between the corrugated fin group 2 and the fresh air, thereby improving the heat exchange efficiency between the fresh air and the surface cooler, and providing structural support for the fresh air to transfer a large amount of heat to the surface cooler.

[0046] Furthermore, the large temperature difference surface cooler further comprises a chilled water main inlet pipe 4 and a chilled water main return pipe 5;

[0047] The water inlet of each heat exchange copper tube 3 is connected to the main chilled water inlet pipe 4;

[0048] The water outlet of each heat exchange copper tube 3 is connected to the main return pipe 5 of chilled water.

[0049] From the above description, it can be seen that since the surface cooler is provided with a plurality of independent heat exchange copper tubes 3 along the Y-axis direction, and the flow rate of chilled water in each heat exchange copper tube 3 is relatively slow, if the method of connecting each heat exchange in sequence to return chilled water is still adopted, the chilled water in the heat exchange copper tube 3 near the water inlet pipe will not be able to quickly return to the peripheral refrigeration station for heat exchange after fully absorbing heat. It must flow through the remaining heat exchange copper tubes 3 in sequence before reaching the water outlet to realize the corresponding heat exchange work, thereby affecting the overall heat exchange efficiency; the improved surface cooler enables each heat exchange copper tube 3 to realize the function of independent water return, and achieves the effect of quickly transferring the absorbed heat to the peripheral refrigeration station by shortening the water return distance and frequently returning water, thereby significantly improving the overall heat exchange efficiency.

[0050] The large temperature difference surface cooler of the utility model can be used for gas refrigeration work.

[0051] Please refer to Figures 1 to 5 , Embodiment 1 of the present utility model is:

[0052] A large temperature difference surface cooler comprises a chilled water main inlet pipe 4, a chilled water main return pipe 5, a frame 1, and a corrugated fin group 2 and at least two heat exchange copper tubes 3 extending in an S-shaped circuitous manner arranged on the frame 1; the heat exchange copper tubes 3 are arranged at equal intervals along the Y-axis direction; the corrugated fin group 2 is arranged on the outside of the heat exchange copper tube 3 and connected to the outer wall of the heat exchange copper tube 3; the inner wall of the heat exchange copper tube 3 is provided with a threaded structure 31; the water inlet of each heat exchange copper tube 3 is connected to the chilled water main inlet pipe 4; the water outlet of each heat exchange copper tube 3 is connected to the chilled water main return pipe 5.

[0053] Along the X-axis direction, the corrugated fin group 2 includes corrugated fin strips 21 arranged at equal intervals; along the Y-axis direction, the corrugated fins form a serrated structure; the spacing between each corrugated fin strip 21 is 1.5 mm; the corrugated fin strip 21 includes a first fin segment 211 and a second fin segment 212; along the Y-axis direction, the first fin segment 211 and the second fin segment 212 are alternately arranged in sequence to form a serrated structure; the angle between the first fin segment 211 and the second fin segment 212 is 90°.

[0054] The working principle of the utility model is: when high-temperature and high-humidity gas passes through the surface cooler, since low-temperature chilled water continues to flow in the heat exchange copper tube 3, the gas can be quickly cooled and condensed with a large temperature difference under the joint action of the heat exchange copper tube 3 and the corrugated fin group 2, thereby improving the cooling efficiency.

[0055] In summary, the utility model provides a large temperature difference surface cooler, which can improve the heat exchange efficiency of the surface cooler by arranging a corrugated fin group and a heat exchange copper tube with a threaded inner wall; compared with the existing surface cooler using straight fins and heat exchange copper tubes with smooth inner walls, the corrugated fin group and the heat exchange copper tube with a thread can respectively increase the contact area between the surface cooler and the air to be dehumidified and the internal chilled water, that is, the ratio of the length to the area of ​​the improved single corrugated fin is 141.4% of that of the existing straight fin; the inner wall area of ​​the improved heat exchange copper tube is 114.2% of that of the inner wall of the existing heat exchange copper tube with a smooth inner wall; thereby, the chilled water with a slow flow rate can take away the heat after absorbing a large amount of heat, thereby improving the cooling effect.

[0056] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent transformations made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in the relevant technical field, are also included in the patent protection scope of the present invention.

Claims

1. A large temperature difference surface cooler, characterized in that: It comprises a frame, a corrugated fin group arranged on the frame and at least two heat exchange copper tubes extending in an S-shaped circuitous manner; The heat exchange copper tubes are arranged at equal intervals along the Y-axis direction; The corrugated fin group is arranged on the outside of the heat exchange copper tube and connected to the outer wall of the heat exchange copper tube; The inner wall of the heat exchange copper tube is provided with a thread structure.

2. The large temperature difference cooler according to claim 1, characterized in that: Along the X-axis direction, the corrugated fin group includes corrugated fin strips arranged at equal intervals; Along the Y-axis direction, the corrugated fins form a sawtooth structure.

3. The large temperature difference cooler according to claim 2, characterized in that: The spacing between each of the corrugated fin strips is 1.5 mm to 5 mm.

4. The large temperature difference cooler according to claim 2, characterized in that: The corrugated fin strip includes a first fin segment and a second fin segment; Along the Y-axis direction, the first wing segments and the second wing segments are alternately arranged in sequence to form a sawtooth structure.

5. The large temperature difference cooler according to claim 4, characterized in that: The included angle between the first wing segment and the second wing segment is 60° to 120°.

6. The large temperature difference cooler according to claim 1, characterized in that: It also includes a chilled water main inlet pipe and a chilled water main return pipe; The water inlet of each heat exchange copper tube is connected to the main water inlet pipe of chilled water; The water outlet of each heat exchange copper tube is connected to the main return pipe of chilled water.

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