F - Mech Eng,Light,Heat,Weapons – 28 – F
Patent
F - Mech Eng,Light,Heat,Weapons
28
F
257/23
F28F 9/02 (2006.01) F28D 1/03 (2006.01) F28D 1/053 (2006.01) F28F 1/08 (2006.01) F28F 1/12 (2006.01)
Patent
CA 1133892
ABSTRACT OF THE DISCLOSURE In a heat exchanger including a flat tube made of metal, and corrugated fins joined by welding to the tube, a multiplicity of elevated portions are successively formed on one side of the flat tube and arranged in a direction intersecting the axis of the tube. The elevated portions, which may be triangular, arcuate, trapezoidal or any other suitable shape in cross section, each have a height smaller than the thickness of a wall of the flat tube.
362065
Fetherstonhaugh & Co.
Nippondenso Co. Ltd.
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