Patent ID: 6591900
Filing Date: 2003-07-15
Classification: F28D,Y10T

Abstract:
A tube for a heat exchanger which is formed by rolling a flat tube material and has a passage with at least one end open, wherein:the tube is provided with a first flat section, first erected sections which are erected at about right angles from both ends of the first flat section, a second flat section which is continuous from the first erected sections and substantially parallel to the first flat section, and a partition for dividing a tube passage; the partition is provided with overlaid portion which are formed by bending and joining the ends of the tube material; the overlaid portion provided at one end of the tube material and the overlaid portion provided at the other end of the tube material are joined to form a partition part; the partition part includes extra sections at both ends of each overlaid portion; and the extra sections are joined with the first and second flat sections.