VENTILATOR COOLING TOWER Russian patent published in 2009 - IPC F28C1/00 

FIELD: heating.

SUBSTANCE: invention deals with design of contact coolers (such as ventilator cooler towers) and may be of relevance in view of providing for the recooling needs of enterprises working in such spheres as chemical industry and power engineering. The ventilator cooling tower consists of a body structure with air inlet windows and a water collection basin. The body structure contains a water trap, a water distributor with sprayers and a sprinkler. On the body structure there is a ventilator mounted containing a diffuser whose casing is represented by a confuser-diffuser barrel fabricated of a glass material. On the casing outside there are intercrossing reinforcement ribs arranged. The diffuser contains a vaned wheel whose shaft is connected to the vaned wheel rotation drive. The intercrossing reinforcement ribs are hollow inside and have trapezoidal cross-section; they are positioned horizontally and vertically so that to form a meshed structure. The confuser-diffuser barrel is represented by a rotary body. The generatrix of the barrel confuser part surface is formed by a circular arc faired with the cylindrical surface generatrix. The barrel diffuser part is tapered. The tapered surface generatrix is faired with the cylindrical surface generatrix via a circular arc. Radius R₁ of the circular arc of the barrel confuser part is equal to 0.15-0.45 of the barrel height. Height of the cylindrical surface of the barrel confuser part is equal to 0.7-0.8 of that of the barrel confuser part. Radius R₂ of the circular arc between the cylindrical and the tapered generatrices of the barrel surface is equal to 0.1-0.2 of the barrel height. The angle of the barrel tapered surface generatrix slant relative to the barrel vertical axis varies from 5° to 10°.

EFFECT: improved efficiency of the ventilator cooling tower operation due to reduction of aerodynamic resistance in the flow section of the cooling tower ventilator diffuser combined with the structure rigidity enhancement.

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