Cold-and-hot water unit with plate-pipe composite heat-exchange evaporative condenser

Abstract

The invention discloses a cold-and-hot water unit with plate-pipe composite heat-exchange evaporative condenser. The cold-and-hot water unit comprises an air compressor, an evaporative condenser, a throttling device and an evaporator. The evaporative condenser comprises a fan, a water pump, a water distributor and a water collecting pond and further comprises a plate-pipe composite heat exchanger formed by connection of multiple plate-pipe composite heat-exchange sheets through a water inlet collection pipe and a water outlet collection pipe. The plate-pipe composite heat-exchange sheets comprise heat-transfer plate sheets and coil pipes formed by machining of heat-exchange pipes. The heat-transfer plate sheets are provided with placing grooves. The shapes of the placing grooves are matched with shapes of the coil pipes. The coil pipes are placed in the placing grooves. The gaps between the coil pipes and the placing grooves are filled with heat-conducting bonding layers. The cold-and-hot water unit with the plate-pipe composite heat-exchange evaporative condenser has following beneficial effects: the heat-conducting bonding layers enable the heat-transfer plate sheets to be in fully contact with the coil pipes such that the heat-exchange area is effectively enlarged; the heat-transfer plate sheets can drain cooling water to form a continuous waterflow surface; the evaporation superficial area of cooling water is enlarged; and heat transfer efficiency is increased while the size of the condenser is reduced.

Description

technical field [0001] The invention relates to the field of heat exchange equipment, in particular to a cold and hot water unit with plate-type and coil-type combined type-changing evaporative condensers. Background technique [0002] The evaporative condenser of the cold and hot water units on the market at this stage usually uses curved coils to form a heat exchanger, and 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 lowe...

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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