MEANS FOR PREVENTION OF SEPARATION OF FLOW AT FLOW BY IT ABOUT THE BLADE OF CENTRIFUGAL FAN Russian patent published in 2003 - IPC

FIELD: fan building industry. SUBSTANCE: the means is made in the form of a detachable member designed for fitting on the blade on the side of the inlet edge made of sheet material and consisting of two sections facing each other by their inner surfaces, conjugate to each other on the side of one pair of the like edges, whose size equals the width of the section, and the width of the mentioned sections corresponds to the width of the blade, the first section is provided with members located on its outer surface for deflection of flow, they are made of figures positioned with an inclination toward the integration of the first and second sections, one of the edges of each of them is oriented in the section width and adjoins its surface over its entire length. EFFECT: reduced loss of the fan for vortex formation, improved acoustic characteristics. 14 cl, 8 dwg