Brazing method, heat exchanger structure, plate heat exchanger and air conditioner

Abstract

The invention relates to the technical field of air conditioning processing, in particular to a brazing method, a heat exchanger structure, a plate heat exchanger and an air conditioner. In the brazing method provided by the present invention, during the brazing process, since the parts constituting the welding area on the first piece to be welded and the second piece to be welded are made of copper material, the first piece to be welded and the second piece to be welded The parts can be directly welded by solder without using solid or liquid flux, so as to avoid the phenomenon of flux residue, which can effectively prevent the phenomenon of flux residue corrosion of copper pipes, and effectively avoid the air conditioning system caused by copper pipe corrosion Leakage can also help to avoid patina on the surface of copper tubes and affect the appearance of the product; the welding difficulty of copper materials is relatively low, so the requirements for the operator's welding skills are low to improve the quality of the product.

Description

technical field [0001] The invention relates to the technical field of air conditioning processing, in particular to a brazing method, a heat exchanger structure, a plate heat exchanger and an air conditioner. Background technique [0002] Brazing is to use a material with a lower melting point than the base metal as the solder, heat the weldment and the solder to a temperature higher than the melting point of the solder but lower than the melting temperature of the base metal (the solder melts, and the base metal remains solid), using capillary The role is to make the liquid solder fill the gap between the solid base metals, the solder penetrates, diffuses and interacts on the surface of the base metal, and then cools and solidifies to form a connection method of metallurgical bonding. Different base metal welding processes use The production process is different. [0003] At present, 30B or 37B electrode plus liquid or powder flux is usually used in the welding process of...

AI Technical Summary

Problems solved by technology

Various flux residues cannot be avoided during the soldering process. After long-term use after flux residues, the copper parts will be corroded and the product will fail; and the residual flux will quickly produce patina on the surface of the product, which will affect the appearance of the product.

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