Fin plate type heat exchanger

Abstract

The invention provides a fin plate type heat exchanger. The fin plate type heat exchanger comprises side plates on the two sides, and overlaid partition plates which are arranged between the side plates; each side plate is provided with a cold fluid inlet and outlet and a hot fluid inlet and outlet, and the number of the inlets and the outlets is four, that is to say the hot side inlet, the hot side outlet, the cold side inlet and the cold side outlet; angle holes which correspond to the inlets and the outlets are formed in the partition plates; fins which are welded through brazing are disposed on the two sides of the partition plates, the fins on one sides allow a cold fluid to flow through the angle holes, and the fins on the other sides allow a hot fluid to flow through the angle holes; and sealing groove structures are disposed on the periphery of the partition plates and provided with sealing strips. By means of the fin plate type heat exchanger, the problem that the heat exchange coefficient of a plate type heat exchanger is low during gas heat exchange is solved. Only the angle holes and sealing grooves around the plates are formed, so that a flow channel forming process ofcomplex-shape plates of an original plate type heat exchanger is greatly simplified, the forming qualified rate almost reaches 100%, and the cost is reduced substantially.

Description

technical field [0001] The invention relates to a heat exchanger, in particular to a finned plate heat exchanger. Background technique [0002] The application range of heat exchangers is very wide, and there are many structural forms. Since the industrial civilization, humans have invented and used dozens of heat exchangers with structures. Non-detachable) and spiral plate, plate-fin type (including tube-belt type, parallel flow type, cascaded type and tube-band type of automobile water tank), segment type and so on. In some special applications that require compactness and high efficiency, space constraints, and weight constraints, as well as maintainability, life and reliability, the heat exchangers with the above structures have their limitations. [0003] The plate heat exchanger is detachable and easy to clean, high efficiency, light weight, low cost, convenient combination, large logarithmic average temperature difference, high heat transfer temperature efficiency, b...

AI Technical Summary

Problems solved by technology

[0005] In the general plate heat exchanger, the plate forming technology is difficult, cannot be formed at one time, the process is cumbersome, the qualified rate of finished products is low, only about 73% to 84%, and the production cost is very high.

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