Dividing wall type heat exchanger

Abstract

The invention discloses a dividing wall type heat exchanger, which is manufactured by processing a heat conducting substrate. The inner side of the upper surface of the substrate is provided with an upper-layer runner; the inner side of the lower surface of the substrate is provided with a lower-layer runner; the upper / lower-layer runner adopts a runner network having a constructed tree structure; a tube bundle runner layer is arranged between the upper-layer runner and the lower-layer runner; communicating channels arranged in an array and communicating with the upper-layer runner and the lower-layer runner are arranged in the tube bundle runner layer; and the upper and lower surfaces of the tube bundle runner layer are ribbed surfaces. By fully utilizing the upper / lower-layer space to arrange the runner network having the constructed tree structure and arranging the ribbed surfaces, the heat transfer area required by heat exchange of cold and hot fluid in a unit volume is increased,and the compactness of the structure of the heat exchanger is improved; and the runner network having the constructed tree structure realizes point-to-body optimal path delivery of the fluid, the fluid delivery distance is greatly reduced, the power consumption of a fluid delivery pump in the runner is reduced, and the heat efficiency of the heat exchanger is improved.

Description

technical field [0001] The invention relates to a flow heat exchange device, in particular to a partition wall heat exchanger with a compact structure, which is designed to improve the heat exchange performance and has a tree-shaped structure flow channel network. Background technique [0002] Partitioning wall heat exchanger is the most widely used type of heat exchanger in the field of engineering technology. In this type of heat exchanger, the cold and hot fluids are separated by the wall and located on both sides of the wall. Improving the compactness of the partition wall heat exchanger is a main way to enhance the flow heat transfer performance of this type of heat exchanger. At present, reducing the diameter of flow channels and adopting ribbed surfaces such as threads and corrugations are common methods to achieve compact structures. Reducing the diameter of the flow channel can allow more heat exchange channels to be arranged in a limited space, that is, the heat ...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems of mismatching pump power consumption and heat transfer capacity, uncompact structure and large space occupation existing in the structural design of existing partition heat exchangers, the present invention provides a flow channel network with a configuration tree structure. A compact wall heat exchanger is formed, which can greatly improve the thermal efficiency of the heat exchanger, realize high-efficiency heat exchange and compact structure

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