Plate-fin heat exchanger

Abstract

The invention relates to a plate-fin heat exchanger with light weight, low cost, big available space and higher heat exchanging efficiency, comprising shell, pre-cooling segment and evaporation segment set in the shell. Said pre-cooling segment and evaporation segment comprise channel structure for cool resource and channel structure for hot air respectively. The channel structure for hot air of pre-cooling segment is connected with the channel structure for hot air of evaporation segment. The channel structure for cool resource of pre-cooling segment is parted with the channel structure for cool resource of evaporation segment by clipboard. Air inlet is set on the shell above said pre-cooling segment and water drainage structure is set on the shell under said evaporation segment. It is characterized in that said pre-cooling segment and evaporation segment, as a integrity, is set in the side upper of internal space of said shell; the bottom and a side in the internal space of said shell are hollow; the air in said evaporation segment comes out from the bottom of fin and enters into pre-cooling segment from one side of pre-cooling segment along the hollow part and the outlet for drying air is connected with said shell relative to the other side of said pre-cooling segment.

Description

(1) Technical field [0001] The invention relates to heat exchange equipment, in particular to a plate-fin heat exchanger. (2) Background technology [0002] The structure of the existing plate-fin heat exchanger is shown in Figure 1 and Figure 2, which includes a head 2, a pre-cooling section, and an evaporation section. The pre-heating section and the evaporation section are distributed in the same plate bundle, and the pre-cooling section The evaporating section respectively includes a cold source channel structure and a hot air channel structure, the hot air channel structure of the pre-cooling section is connected to the hot air channel structure of the evaporating section, and the cold source channel structure of the pre-cooling section is connected to the The cold source channel structure of the evaporating section is separated by a partition plate 5, and the output end 6 of the hot air channel structure of the evaporating section is connected to the input end 8 of the...

AI Technical Summary

Problems solved by technology

The disadvantages of this heat exchanger are: 1. The heat transfer coefficient of the air side is quite different from that of the Freon side, and the heat transfer area cannot be fully utilized; 2. An external pipe is added between the evaporation section and the pre-cooling section 7 , the weight of the whole heat exchanger is large, the volume is also large, and the effective volume is small, and the external pipe is directly exposed to the outside air, and the cold dry air coming out of the outlet 6 is very easy to heat up due to the heat conduction of the outside air. As a result, it will affect the cooling of the hot and humid air in the pre-cooling section, and the heat exchange efficiency is low

Images