| 摘要 |
PROBLEM TO BE SOLVED: To provide an all-aluminum heat exchanger to which a hydrophilic coating is applied.SOLUTION: The heat exchanger includes tubes inside which refrigerant flow paths are provided, and a plurality of plate-like fins arranged in parallel to one another, and brazed and joined to the tubes inserted therethrough, the fins each including a plate-like base material, a hydrophilic coating having a hydrophilic property, provided on the first face of the base material, and formed mainly of silicate, and a brazing filler metal layer provided on the second face of the base material. The adhesion amount of the hydrophilic coating can be 50 mg/m-1500 mg/minclusive.SELECTED DRAWING: Figure 4 |
