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

FIELD: power industry.

SUBSTANCE: fan cooling tower includes a housing, a spraying device, a liquid collecting tank and a fan. The housing consists of two parts - upper part including a sprinkler and a drop separator, between which there located is a header of the spraying device with atomisers and the lower part in which a water collecting tank is located and intended for collection of cooled water with a fan installed on it; at that, the housing is made from stainless steel sheets, and in the water collecting tank there is a diffuser that represents a part of the housing and is connected to the fan provided with a plastic impeller and a multi-speed electric motor allowing during operation, depending on weather conditions, to change the cooling tower capacity owing to changing the air flow rate, and the sprinkler includes tubular elements from thermoplastic material with a grate wall, which are laid in layers parallel to each other. Tubular elements are welded to each other on their end faces; tubular elements have a triangular cross section and a strip made from thermoplastic material is laid between each layer of tubular elements across tubular elements along each of their end faces and welded to tubular elements at their contact points to the strip; besides, end sections of tubular elements strips laid between them are fused during welding and solid end walls of the unit are formed during fusing process. Cavities of each of the tubular elements and inter-tube space is filled with hollow polymer balls; diameter of balls is by 5-10% larger than maximum size of the cell of the grade wall of tubular elements. An atomiser of the spraying device includes a housing into which a screw is pressed and a liquid supply nozzle, and the housing consists of two coaxial cylindrical bushings connected to each other: a bushing of larger diameter and a bushing of a smaller diameter. Inside the bushing of smaller diameter there located coaxially to it is a screw rigidly attached to its inner surface, for example the one that is pressed into it. Outer surface of the screw represents a screw groove, and inside the screw there is a hole with screw thread, and in the bushing of larger diameter there located coaxially to it is a nozzle rigidly fixed in it for example by means of a threaded connection through a sealing gasket. Inside the nozzle there is a coaxial cylindrical hole changing over to an axisymmetrically located diffuser that is connected to the cylindrical chamber formed with the inner surface of the bushing of smaller diameter and end surface of the screw.

EFFECT: improving the cooling tower operating efficiency.

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