SMOKE-DEFLECTING AXIAL-FLOW FAN (DESIGN VERSIONS) Russian patent published in 2000 - IPC

FIELD: mechanical engineering; axial flow fans. SUBSTANCE: proposed axial-flow fan has housing, motor, impeller arranged inside fan housing, and cooling system. According to invention, motor is arranged outside fan housing and is connected with impeller by means of drive. Drive is made in form of reduction gear with at least one kinematic bevel pair. Reduction gear is placed inside fan housing. At least one drive shaft of reduction gear is connected with motor and is arranged inside channel of cooling system. At least one driven shaft of reduction gear is connected with corresponding impeller. Reduction gear shafts are mounted on bearing supports in reduction gear housing. Bearings of bearing supports are packed with solid lubricating antifriction graphite- based material. EFFECT: provision of reliable operation for at least 2 hours at smoke temperature up to 400 C, reduced cost of fan. 10 cl, 2 dwg