A folded plate-fin heat exchanger

Abstract

The invention relates to the technical field of heat exchangers, in particular to a folded plate-fin heat exchanger. A folded plate-fin heat exchanger includes a shell, a folded partition and a head. The shell includes at least one air inlet and outlet port, and the air inlet and outlet port is arranged on the side wall of the end of the shell. The folded partition is arranged in the shell, and the folded partition includes a plurality of heat exchange plates and a plurality of baffle plates, and the plurality of heat exchange plates are stacked, and there is a gap between two adjacent heat exchange plates and a flow baffle is arranged. plate, and two baffle plates connected to the same heat exchange plate are respectively located on opposite sides of the heat exchange plate. The folding partition is used to cooperate with the inner wall of the housing, so that the plurality of baffles, the heat exchange plate corresponding to the baffles, and the inner wall of the housing corresponding to the baffles jointly define a plurality of first flow channels and a plurality of In the second flow channel, the baffle plate corresponding to the first flow channel is opposite to the baffle plate corresponding to the second flow channel; both the first flow channel and the second flow channel are interference-fitted with heat exchange fins.

Description

technical field [0001] The invention relates to the technical field of heat exchangers, in particular to a folded plate-fin heat exchanger. Background technique [0002] Plate-fin heat exchangers generally adopt an assembly structure in which multi-layer heat exchange units are stacked and formed. The heat exchange units include separators, plate fins, guide fins, side seals and heads. [0003] During the forming process of the plate-fin heat exchanger, the most common problem is local desoldering, that is, the weak link is formed due to local lack of welding, which leads to the decrease of the pressure bearing capacity of the plate-fin heat exchanger and leaves a hidden danger of sealing. The layer-by-layer assembly structure brings problems such as large sealing area, assembly dislocation, accumulation of thermal stress and deformation, and large weight, which not only increases the possibility of local desoldering, but also leaves a hidden danger for the plate-fin heat ex...

AI Technical Summary

Problems solved by technology

[0003] During the forming process of the plate-fin heat exchanger, the most common problem is local desoldering, that is, the local part is not welded firmly to form a weak link, which leads to a decrease in the pressure bearing capacity of the plate-fin heat exchanger and leaves a hidden danger of sealing

The layer-by-layer assembly structure brings problems such as large sealing area, assembly dislocation, accumulation of thermal stress and deformation, and large weight, which not only increases the possibility of local desoldering, but also leaves a hidden danger for the plate-fin heat exchanger. , and makes the heat exchanger slightly bulky

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