Heat exchanger as heat exchanger in heating installations or engine radiator of motor vehicles

Abstract

The invention relates to an at least double-flow flat tube heat exchanger of aluminum for motor vehicles with at least one water case with cap and tube bottom connected in communication with one end of the flat tubes, the multi-flow flat tubes engaging in a soldered or brazed connection with their free ends each slit in the tube bottom, the water case being divided into at least one compartment on the inlet and one compartment on the outlet side by at least one partition arranged at the plane of each of the partitions between adjacent flows of the flat tubes, and the partition of the water case each engaging a groove or a slit in the tube bottom thereby intersecting the free ends of the flat tubes. Accordingly to the invention, it is provided that across the edge of the tube bottom openings formed therein are distributed, which are engaged by tongues formed at the free edge of the cap in a soldered or brazed connection.

Dependencies are inferred from the claim text.