| 摘要 |
<p>PROBLEM TO BE SOLVED: To reduce the thicknesses of fins by preventing the fins from being deformed even when the fins are washed (subjected to high-pressure washing) with high-pressure water. SOLUTION: A reinforcing section 112c is provided by corrugating some of the fins 112 on the front grill side of the fins 112, namely, on the upstream side of an air flow. Since the deformation of a core section 110 (fins 112) by the hydraulic pressure of the high-pressure water is prevented, the thicknesses of the fins 112 is reduced, while preventing the fins 112 from being deformed even when the fins 112 are washed (subjected to high-pressure washing) with the high-pressure water.</p> |
