Patent ID: 6729389
Filing Date: 2004-05-04
Classification: F28D,H01L

Abstract:
A heat transfer apparatus with a zigzag passage comprising:a pair of opposed plates at least one plate of the pair of opposed plates forming a heat transfer surface, a bent plate having a wavy cross-sectional shape forming rectangular grooves alternately opposite to each other in a cross section of the zigzag passage so as to divide a space between said pair of opposed plates into a plurality of side-by-side passages, wherein said bent plate includes side wall portions so that each adjacent pair of the side wall portions defines a rectangular groove therebetween, and a pair of cover members bonded to said bent plate at both ends of the rectangular grooves of said bent plate and forming connecting portions between said side-by-side passages, wherein one side wall portion of said adjacent pair of side wall portions is coupled to one cover member of said pair of cover members, and an other side wall portion of said adjacent pair of side wall portions is coupled to an other cover member of said pair of cover members, so that the zigzag passage has a flow direction from one of the rectangular grooves to an adjacent rectangular groove, the flow direction changed at one of the ends of said one of the rectangular grooves, and wherein both ends of each rectangular groove form an end portion, and only one of the two end portions of each groove is coupled to a corresponding cover member of said pair of cover members in one side wall portion of each rectangular groove.