Vehicle-loaded heat exchanger of parallel flow type
AssigneeDiesel Kiki Co., Ltd.
InventorsMiki Nakamura, Eiji Ohkura
Life of this patent
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Abstract
An automotive heat exchanger of the parallel flow type includes a number of flat tubes (4), a number of corrugated fins (5), with the flat tubes and the corrugated fins being stacked alternately, the first cylindrical header tank (2) to which the tubes are connected by inserting one end thereof laterally into the first header tank, and the second cylindrical header tank (3) to which the tubes are connected by inserting the other end thereof laterally into the second header tank. The ends of each tube inserted laterally into the header tanks are cut off along the inner peripheral surfaces of the header tanks, thus minimizing the obstruction of flow in the headers. The header tanks may be made substantially elliptical.
Claims11
A heat exchanger of the parallel flow type comprising a plurality of flat tubes and corrugated fins stacked alternatively, a first header tank to which said tubes are connected by inserting one end thereof laterally into said first header tank and a second header tank to which said tubes are connected by inserting the other end thereof laterally into said second header tank, characterized in that said header tanks have a substantially elliptical cross section and that each end of each tube inserted laterally into each header tank is cut off along an inner peripheral surface of the header tank with only a predetermined extension into said header tanks to not only assure a desired brazing margin but also reduce a flow resistance.
A heat exchanger of the parallel flow type comprising a plurality of flat tubes and corrugated fins stacked alternatively, a first header tank to which said tubes are connected by inserting one end thereof laterally into said first header tank and a second header tank to which said tubes are connected by inserting the other end thereof laterally into said second header tank, characterized in that each end of each tube inserted laterally into each header tank is cut off along an inner peripheral surface of the header tank and that each of the header tanks comprises a cylindrical pipe.
Dependencies are inferred from the claim text.