Plate-tube composite heat exchange fin and manufacturing method thereof

Abstract

A tube-and-plate type compound heat exchange sheet and a method for manufacturing same. The tube-and-plate type compound heat exchange sheet comprises a coil pipe (1) formed by a shaped heat exchange pipe, and further comprises a heat transfer plate (2). The heat transfer plate (2) is provided with an accommodation groove (21). The shape of the accommodation groove (21) matches the shape of the coil pipe (1). The coil pipe (1) is placed in the accommodation groove (21). The gap between the coil pipe (1) and the accommodation groove (21) is filled with a thermally conductive bonding layer (3). The thermally conductive bonding layer (3) ensures full contact between the heat transfer plate (2) and the coil pipe (1), the coil pipe (1) producing a ribbed effect with the heat transfer plate (2), thereby increasing the effective heat exchange area. The heat transfer plate (2) can also drain cooling water to form a continuous water flow surface, thereby enlarging the evaporation surface area of the cooling water. The effective heat exchange area and the evaporation area of the cooling water are increased, improving heat exchange efficiency and also reducing condenser size.

Description

technical field [0001] The invention relates to the field of heat exchange equipment, in particular to a plate-type and coil-type composite heat exchange fin and a manufacturing method thereof. Background technique [0002] At this stage, evaporative condensers on the market usually use curved coils to form a heat exchanger. The outer surface of the heat exchanger is cooled by spray water, and the circulating spray water is used to evaporate and take away heat. However, the outer surface of the heat exchange tubes of this type of coil heat exchanger is generally smooth, and the heat exchange efficiency is low. At the same time, the heat exchange surface area of ​​cooling water evaporation is small, and the distance between the coils needs to be enlarged to increase the heat exchange time between cooling water and air, resulting in a bulky heat exchanger. On the other hand, since there is no medium between the upper and lower tubes of the coil to guide the flow of cooling wa...

AI Technical Summary

Problems solved by technology

Multiple packing sheets are installed on the coil by buckles, etc., and the installation and disassembly are cumbersome; in this installation method, the packing sheets and the coil will not be tightly installed, which can meet the needs of guiding the spray water to form a water film. However, it cannot meet the needs of direct heat exchange with the coil, and the packing sheet is not a heat exchange material, so it cannot exchange heat with the coil

Therefore, although the invention patent has improved the heat exchange efficiency to a certain extent, the heat exchange efficiency has not been greatly improved because the heat exchange efficiency is only improved by increasing the utilization rate of cooling water.

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