Patent AT-E399969-T1: [Translated] FLAT TUBE RADIATOR

The radiator has flat tubes (2) that are connected to a connecting tube (4) by a double manifold (3). The connecting tube is formed flat on the radiator in a line of vision, and has a contour that corresponds to the design of the flat tubes. The connecting tube has a mold (20) for receiving heating units, where the mold increases the cross section of the connecting tube in comparison to the cross section of the flat tubes. A gap (14) between the connecting tube and one of the flat tubes is larger than a gap (15) between the flat tubes.