AIR-COOLED HEAT RADIATOR IN REFRIGERATION CYCLE

PURPOSE:To prevent the corrosion of fins and heat-transferring tubes by reducing the contamination owing to impurities in the air, by a method wherein above the fin at the highest stage, a water-feeding pipe for dropping water at the rear position of the heat-transferring tubes which face to an air-flow on the surface of each of the fins beneath the fin at the highest stage is provided, and water-guiding holes, each of which is in the shape of a peculiar cut, are formed on the fin of each stage. CONSTITUTION:Each water-guiding hole 22 is formed in the shape of a slit, which extends to a rear side 14A on each fin 14 at a place at which a vertical line passing a water-feeding hole 17 and the surface of each of the fins 14 intersect each other. After waterdrops 20 falling from the water-feeding hole 17 pass the water-guiding hole 22 on a fin 14a at the highest stage, they fall on the surface of a fin 14b beneath the water-feeding hole 17. The waterdrops 20 falling on the fin 14b of the second stage spread so that part thereof adhere to the periphery of the water-guiding hole 22 and extend to the rear side 14A on the fin 14 along the water-guiding hole 22 since the width of the water-guiding hole 22 is smaller than the diameter of the waterdrop 20. The amount of water 21 adhering to the water-guiding hole 22 on the fin 14b of the second stage increases and the waterdrops falling on the fin 14 beneath it spread along the periphery of the water-guiding hole 22, and thus the title device becomes in the state in which the water adheres to periphery of each of the water-guiding holes 22 on all the fins 14.