Heat exchanger with tubes having expanded mouths

Details Heat exchanger with tubes having expanded mouths Heat exchanger with tubes having expanded mouths

1993-10-01

1995-07-11

Rivell, John

Heat exchange

Side-by-side tubular structures or tube sections

With manifold type header or header plate

165153, F28F 904

Patent

active

054312183

ABSTRACT:
A heat exchanger, especially a heat exchanger for a motor vehicle, has a header plate which is formed with substantially circular holes, together with a bundle of tubes each having an end portion of modified shape, which is sealingly received in a respective one of the holes in the header plate. Each tube end portion is provided with an expanded mouth, which is formed by deformation of the wall of the tube and which has a polygonal shape which may for example be square, being then defined by sides which are joined together by rounded corners.

REFERENCES:
patent: 4175308 (1979-11-01), Togashi
patent: 4401157 (1983-08-01), Cadars
patent: 4682650 (1987-07-01), Potier
patent: 4967836 (1990-11-01), Nakamura
patent: 5214848 (1993-06-01), Lelievre

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