VENTILATION PLANT Russian patent published in 1994 - IPC

FIELD: manufacture of fans. SUBSTANCE: plant has housing in which two fans are mounted. Outlet passages of these fans are connected forming common passage. Plant is also provided with damper for closing the outlet passage of one of fans. Outlet passages are arranged in V-shaped pattern. Damper is mounted rotatably on the axle located at point where inner walls of outlet passages come together. Housing consists of two parts connected by means of flange joint. Outlet passages of fans are made in one of part which is provided with V-shaped cut; other part has common passage and bell mouth embracing the outer walls of converging passages. EFFECT: enhanced efficiency. 1 dwg