| 摘要 |
PURPOSE:To disperse the quantity of frost adhering on the front edge of a fin to a rearer section, and to improve capacity and effeciency on the frosting of a heat exchanger with the fin by thinning the thickness of the nose section of the fin on the inflow side of a heating medium. CONSTITUTION:The nose sections 6a of fins 6 in which air flows from the direction of the arrow of a heat exchanger with the fins is constituted so as to be made thinner than the mean thickness of the fins 6. Consequently, the area of an opening in the front of the heat exchanger with the fins is widened, and the increase of the resistance of ventilation due to frost lumps on frosting can be inhibited remarkably. Since the nose sections of the fins are tapered, the flowing of heat by conduction is obstructed, the efficiency of the fins at the noses of the fins is lowered, and the formation of frost lumps is deteriorated, and frost is dispersed toward the rears of the fins. Accordingly, the time until defrostation is required from the starting of frosting can be shortened remarkably. |
