Patent ID: 6059866
Filing Date: 2000-05-09
Classification: B01D,F24F,H01L,Y02A,Y02B

Abstract:
An air washer having a basic unit, the basic unit comprising:a water spray chamber in which an air flow takes place from an air inlet to an air outlet;an inlet washer media disposed in the air inlet of the water spray chamber;an outlet washer media disposed in the air outlet of the water spray chamber;first stage nozzles from which spraying water is sprayed in the reverse direction to the air flow, are located downstream from the inlet washer media and arranged in plural positions both along vertical and horizontal directions;a water storage tank for receiving spraying water running down, located below the water spray chamber; anda circulating water supply system that circulates the circulating water in the water storage tank to the first stage nozzles,characterized in that:the inlet washer media and the outlet washer media are formed in a mat-shape with a predetermined thickness;the spraying water from the first stage nozzles is sprayed in such manner that some of the spraying water reaches the inlet washer media, some of the spraying water collides with surfaces of a ceiling and walls and the remaining spraying water moves together with the air flow to reach the outlet washer media,second stage nozzles from which spraying water directed against the outlet washer media is sprayed obliquely downward from the upper part in the forward direction to the air flow, are disposed in approximately the same positions as the first stage nozzles and arranged in plural positions along a horizontal direction;a supplementary water supply system for supplying supplementary water to the second stage nozzles is provided, andan overflow pipe is provided in the storage tank to supply the required quantity of supplementary water for maintaining a concentration of harmful cases in the circulating water at lower than the predetermined value.