FAN COOLING TOWER Russian patent published in 2014 - IPC F28C1/00 

FIELD: power industry.

SUBSTANCE: fan cooling tower includes a vertical housing with air inlet openings located along the perimeter of its lower part, a water trap and a fan impeller connected to an electric drive of its rotation around the vertical axis; with that, the following is in-series located tier-by-tier in the housing in a downward direction: a drop catcher, a water distributor with spraying elements, the first stage of the sprayer and the second stage of the sprayer that is located above air inlet openings; with that, the above spraying elements are oriented in the direction of upper surface of the first stage of the sprayer. The housing has an open upper end part; the fan impeller is arranged between the first and the second sprayer stages; with that, the fan impeller is located relative to upper surface of the first sprayer stage at the distance that does not exceed 0.38 of the fan impeller diameter, and relative to lower surface of the first sprayer stage at the distance comprising 0.03 to 0.075 of its diameter, the maximum values of which corresponds to a guaranteed working gap between the fan impeller and the inner surface of the housing, and minimum value - to allowable non-uniformity of distribution of the air flow along the cross-sectional area of the first and the second sprayer stages. Diameter of the fan impeller is 0.9 to 0.98 of minimum size of the internal cross-section of the housing. Lower surface of the second sprayer stage is located relative to the fan impeller at the distance that does not exceed 0.38 of its diameter.

EFFECT: simpler design of a fan cooling tower, improving its operating reliability during winter season, increasing uniform distribution of an air flow across the cross-section of the sprayer at simultaneous reduction of power costs for formation of the air flow through sprayer stages with speed parameters that are optimum for a film-type water cooling mode and improving efficiency of a drop stage of water cooling.

3 cl, 1 dwg