Patent ID: 7107680
Filing Date: 2006-09-19
Classification: B23K,F28D,F28F,Y10T

Abstract:
1. A manufacturing method of a heat exchanger comprising: an arranging step for combining a first plate with a second plate in such a manner that opening peripheries are confronting each other while an inner fin is disposed there between, the first plate and the second plate having a substantially U-shaped cross section, the first plate and the second plate being provided with a brazing material layer thereon; an evaporating step in which the combined plates and the inner fin are heated so that the organic substances in the brazing material layer evaporate, and a bonding step for bonding the first plate and the second plate together with the inner fin after the brazing material melts, wherein a clearance is formed between the first plate and the second plate in the arranging step, and an organic substances vapor is discharged from an inside of the first plate and the second plate through the clearance in the evaporating step.