CROSS-FLOW FAN

摘要

mechanical engineering; ventilation systems. SUBSTANCE: cross-flow fan has casing 1 with suction branch pipe 2 furnished with throttling device 3 and delivery branch pipe 4, and impeller 5 installed in casing 1. Throttling device 3 consists of turnable blades 6 and tie-rod 7. Blade 6 have rotation axle 8 terminating in rotary levers 9. Ends of levers 9 are hinge-coupled with tie-rod 7. Rotation axles 8 of blades 6 are parallel to rotation axle of impeller 5. EFFECT: improved economy at fan operation control and provision of safety in operation. 1 dwg