Box-shaped stacked heat exchanger with one of mediums interchanging heat provided with multiple flow channels

Abstract

A box-shaped stacked heat exchanger with one of mediums interchanging heat provided with multiple flow channels comprises a heat exchange core and is characterized in that the number of the flow channels of one heat exchange medium is increased through the mode of increasing heat exchange plates and heat exchange devices, under the action of corner hole backing plates, the heat exchange medium can flow in the same direction in the heat exchange devices of the multiple adjacent flow channels at the same time in a parallel-connection mode, but the other heat exchange mediums interchanging heat still flow in the original alternate-heat-exchange single-layer flow channels and the original alternate-heat-exchange heat exchange devices. In the heat exchange core, the number of the flow channels of one of the heat exchange mediums is larger than the number of the flow channels of the other heat exchange mediums, so that alternate heat exchange between the walls of the single-layer flow channels and the walls of the multilayer flow channels through the heat exchange mediums interchanging heat is achieved.

Description

technical field [0001] The present invention relates to a heat exchanger, in particular to a box-shaped stacked heat exchanger with multiple flow channels as one of the mutual heat-exchanging media. Background technique [0002] The box-shaped laminated heat exchanger refers to the orderly stacking of multiple heat exchange plates with inclined edges, and the sealing method of the periphery relies on the inclined surfaces of the edges of the heat exchange plates to be sealed and connected to each other. Inside the box-shaped laminated heat exchanger, there are Corner holes for the circulation of heat exchange medium and heat exchange device for heat exchange on the partition wall. The corner holes in the heat exchanger are distributed at both ends of each heat exchange plate, and the heat exchange device is in the middle of each heat exchange plate. [0003] At present, the heat exchange method of the box-shaped laminated heat exchanger is that in the same heat exchanger and...

AI Technical Summary

Problems solved by technology

[0004] The disadvantages of the above-mentioned type of box-shaped stacked heat exchangers are;

[0008] The disadvantage of the prior art with published patent No. 03811046.6 is that after each heat exchange plate is assembled and brazed, the second edge segment of each second type heat exchange plate will not be connected with The first and third edge slopes of the upper and lower heat exchange plates are in contact with each other, and will not be brazed with these edge slopes, so that in the entire heat exchange core, the second edge of each sheet In the edge of the type heat exchange plate, there will be a section of outer edge protection with only a single heat exchange plate material thickness. Such an edge thickness distribution will result in weak pressure bearing capacity and fatigue resistance of the entire heat exchanger

Images