Patent ID: 6619386
Filing Date: 2003-09-16
Classification: F28F,Y10T

Abstract:
A stacked-type, multi-flow heat exchanger comprising:a first header pipe; a second header pipe formed opposite said first header pipe; a plurality of heat transfer tubes extending between said first header pipe and said second header pipe, wherein said first header pipe and said second header pipe are in fluid communication via said plurality of heat transfer tubes; and a plurality of fins alternately stacked with said plurality of heat transfer tubes, wherein at least one end of said first header pipe comprises a first tapered portion, and said first tapered portion is substantially cylindrical-shape, wherein said first tapered portion has a reduced diameter relative to a diameter of a center portion of said first header pipe, and an opening formed therethrough, wherein said diameter of said first tapered portion is selected, such that a first interior surface of said first tapered portion contacts a second interior surface of said first tapered portion along an axis of said first tapered portion, such that a diameter of said opening approaches zero or is zero and said interior surfaces of said first tapered portion hermetically seal said opening.