Plate-pipe composite heat-exchange fin and manufacturing method thereof

Abstract

The invention discloses a plate-pipe composite heat-exchange fin. The plate-pipe composite heat-exchange fin comprises a coil pipe formed by machining of a heat exchange pipe and further comprises a heat transfer plate sheet. A placement groove is arranged in the heat transfer plate sheet. The shape of the placement groove is matched with that of the coil pipe. The coil pipe is placed in the placement groove. A gap between the coil pipe and the placement groove is filled with a heat conduction bonding layer. The invention further discloses a manufacturing method for the plate-pipe composite heat-exchange fin.Compared with the prior art, the plate-pipe composite heat-exchange fin has following beneficial effects: the heat conduction bonding layer enables the heat transfer plate sheet to be in full contact with the coil pipe such that the coil pipe has the finned effect through the heat transfer plate sheet and the effective heat exchange area can be effectively increased; the heat transfer plate sheet can introduce cooling water to form a continuous waterflow surface and increases the evaporation area of cooling water; and with an increased effective heat exchange area and an evaporation area of cooling water, heat exchange efficiency is raised and size of a condenser can be reduced.

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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