HOT-AIR BLOWER Russian patent published in 1998 - IPC

FIELD: domestic and industrial air heaters. SUBSTANCE: turning on the drive by control system and the electric heaters makes impeller feed air heated in gaps between electric heaters through flow channel to user. Inlet water loss at air turn is negligible since inlet area is twice and more as large as flow channel area. After turn, hot air speed grows and its stream ejects cold air through gap between drive and shell which goes through shaped bottom to cool down the drive. EFFECT: improved efficiency and trouble-free service period of blower. 2 cl, 2 dwg