Patent ID: 8151871
Filing Date: 2012-04-10
Classification: F28D,F28F

Abstract:
1. A heat exchanger, in particular a gas cooler for a vehicle air-conditioning unit, having several flat tubes arranged parallel to one another in two or more rows and a collector tube, which exhibits one or more longitudinal separating walls arranged along the longitudinal axis of the collector tube, subdividing the collector tube into two or more collector channels, wherein the collector tube is formed from two metal sheets, in that openings to accept the ends of the flat tubes are provided in at least one of the metal sheets, and in that each longitudinal separating wall is provided with tongue-like projections, which are arranged in grooves in at least one of the metal sheets and are fixed to the outside of the metal sheet, wherein the longitudinal separating wall in the area of the openings in one of the metal sheets exhibits recesses which function as a stop for the tube, wherein the recesses are embodied with a tear-shaped form, and wherein said tear-shaped recesses comprise recesses having an open first end having a first width and an inner portion having a second width greater than said first width and a closed, curved second end.