Method for manufacturing a heat exchanger and exchanger obtained by the method

Abstract

The present invention relates to a method for manufacturing an air/fluid heat exchanger (1), said method comprising at least the following steps: a) on a first sheet metal plate (2), a plurality of tight folds are formed, said folds acting as fins (3), or, alternatively, the first sheet metal plate (2) comprising a first portion (2a) and a second portion (2b), tight folds (3) are formed only on the first portion (2a); said first sheet metal plate (2) or said first portion (2a) forming a sheet metal plate in the upper position; b) the tight folds (3) are opened on a portion across their height; c) the first sheet metal plate (2) obtained in step b) is placed on a second sheet metal plate (6), said second sheet metal plate (6) forming a sheet metal plate in the lower position, or, alternatively, the first portion (2a) obtained in step b) is folded on the second portion (2b), said second portion (2b) forming a sheet metal plate in the lower position, d) the tight portion of the folds (3) is brazed and the first sheet metal plate (2) is brazed onto the second sheet metal plate (6), or, alternatively, the tight portion of the folds (3) is brazed and the first portion (2a) is brazed onto the second portion (2b); e) optionally, a third sheet metal plate (7) is placed and brazed underneath the sheet metal plate in the lower position; said third sheet metal plate forming then, the sheet metal plate in the lower position.

Dependencies are inferred from the claim text.