Patent ID: 6341648
Filing Date: 2002-01-29
Classification: B21C,B60H,F28D,F28F

Abstract:
A heat exchanger applied to an air conditioning apparatus for a vehicle, a width dimension of which is larger than a height dimension, comprising:a heat-exchanging core portion including a plurality of tubes through which heat-exchanging medium flows and a plurality of fin members connected to said tubes, said heat-exchanging core portion being divided into a first core portion and a second core portion in a height direction thereof, said first and second core portions extending entirely across said width dimension of said heat exchanger; a first tank disposed at a first side of said heat-exchanging core portion, which is divided in the upper and lower direction into a first return tank and a second return tank; a second tank disposed at a second side of said heat-exchanging core portion, which is divided in an upper and lower direction into an inlet tank into which said heat-exchanging medium flows in and an outlet tank of which said heat-exchanging medium flows out; a first bypass tube provided in parallel to said tubes, a cross sectional area of which is larger than that of said tubes; and a second bypass tube provided in parallel to said tubes, a cross sectional area of which is larger than that of said tubes, wherein said first core portion and said second core portion are arranged in parallel in said heat-exchanging medium-flow, said heat-exchanging medium flows in said first core portion and said second core portion in an opposite direction to each other; said heat-exchanging medium introduced into said inlet tank is distributed into said first bypass tube and said tubes in said second core portion, said heat-exchanging medium distributed into said first bypass tube flows into said first return tank, U-turns in said first return tank, and flows through said tubes in said first core portion and into said outlet tank, and said heat-exchanging medium distributed into said tubes in said second core portion flows into said second return tank, U-turns in said second return tank, and flows through said second bypass tube into said outlet tank.