Bonding type plate-fin heat exchanger core body, manufacturing method of bonding type plate-fin heat exchanger core body and heat exchanger

Abstract

The invention discloses an adhesive type plate-fin heat exchanger core, a manufacturing method thereof and a plate-fin heat exchanger. The manufacturing method comprises the steps that all parts of the plate-fin heat exchanger core are assembled, and a prefabricated core structure is obtained; immersing the prefabricated core body structure into a container filled with nano anticorrosive paint, wherein included angles between a cold channel and the surface of the nano anticorrosive paint and between a hot channel and the surface of the nano anticorrosive paint in the prefabricated core body structure are acute angles or obtuse angles during immersion; vacuumizing the container until the vacuum degree reaches a preset vacuum degree; the prefabricated core body structure is lifted out of the container, and the included angle between the cold channel and the surface of the nanometer anti-corrosion coating and the included angle between the hot channel and the surface of the nanometer anti-corrosion coating are acute angles or obtuse angles; and the nanometer anti-corrosion coating on the surface of the prefabricated core structure is dried, all the parts are bonded through the nanometer anti-corrosion coating, and the bonded type plate-fin heat exchanger core is obtained. According to the manufacturing method, the weight of the plate-fin heat exchanger core can be reduced, the size is reduced, the manufacturing cost is reduced, and the anti-corrosion performance and the heat dissipation capacity of the plate-fin heat exchanger core are improved.

Description

technical field [0001] The present application relates to the field of heat exchangers, and in particular, to a core body of an adhesive type plate-fin heat exchanger and a manufacturing method thereof, and a plate-fin heat exchanger. Background technique [0002] Plate-fin heat exchangers have the advantages of high heat transfer efficiency and small size, and are widely used in petroleum, chemical, communication base station heat exchange, charging pile heat exchange and other fields. The core body of the plate-fin heat exchanger includes fins, baffles, seals and other parts. At present, each component is made into a core body by brazing. Brazing refers to the brazing material and welding parts below the melting point of the welding parts. At the same time, after heating to the melting temperature of the solder, the liquid solder is used to fill the gap of the solid workpiece to connect the metals. During manufacture, it is necessary to coat brazing filler metal or brazin...

AI Technical Summary

Problems solved by technology

During manufacture, it is necessary to coat the parts of the core body with solder or braze the composite material with solder. The separator is a composite separator, the top and bottom layers are solder layers, and the middle layer is generally ordinary aluminum alloy. The thickness of the plate is thick and the weight is heavy. The welding time is generally 8 to 12 hours, and the welding temperature needs to reach about 580 ° C ~ 620 ° C. The welding time is long, the energy consumption is large, and the corrosion resistance of the solder or the composite material with the solder Insufficient capacity, resulting in short service life of plate-fin heat exchanger core

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