| 摘要 |
PROBLEM TO BE SOLVED: To smoothly discharge defrost water and dew condensation water by improving shapes of corrugated fins in a parallel flow-type heat exchanger. SOLUTION: This heat exchanger 1 comprises horizontal header pipes 2, 3 disposed in parallel with each other at an interval in the vertical direction, a plurality of vertical flat tubes 4 disposed between the header pipes 2, 3 at intervals in the horizontal direction in a state that vertical refrigerant passages 5 formed inside are made to communicate with the inside of the header pipes, and the corrugated fins 6 disposed between the flat tubes 4. Fin surfaces of the corrugated fins 6 have falling gradients from windward 6U toward leeward 6D, the windward 6U has a deep fold of a corrugated shape, and the leeward 6D has a shallow fold of a corrugated portion, and an intermediate part 6M has a transition shape from the corrugated shape of the windward 6U to the corrugated shape of the leeward 6D. COPYRIGHT: (C)2009,JPO&INPIT
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