Patent ID: 6854512
Filing Date: 2005-02-15
Classification: F28D,F28F

Abstract:
1. A heat exchanger tube that has a generally flat body having predetermined values in length (an axis X), height (an axis Y) and width (an axis Z) directions, a plurality of refrigerant passages formed passed through the interior of said flat body in the length direction thereof, wherein said refrigerant passages are provided with a plurality of inside passages, each of which has a first curved portion that is made by changing predetermined curves over at least a time or more to form a curve changing point protruding into the passage in the width direction of said body, by which turbulence activating part are formed, and has a second curved portion that is formed opposite to said first curved portion and is connected slowly to said first curved portion so as to have a singular outwardly to the passage convex surface at one end and a singular outwardly to the passage concave surface at the other end of each passage in the height direction of the tube to thereby form a curve closed face; and a pair of outside passages disposed on the outermost both ends of said plurality of inside passages.