VENTILATION UNIT Russian patent published in 1995 - IPC

FIELD: ventilation. SUBSTANCE: air suckers with inlets for air are opposite. The mixing chamber is interposed between the air sucker. The air dispensing duct is connected with the inlet openings. Fans having inner and outer impellers and electric motors are combined in block to permit independent reverse rotation of impellers. Air dispensing air duct is mounted coaxially inside the air suckers at the mixing chamber and is in communication with it. The inlets of the air suckers are in communication with a room and provided with devices for measuring parameters of air and gates. One inlet is provided with regenerative device. The inner impellers are arranged inside the air duct. The outer impeller is mounted inside the chamber. EFFECT: enhanced efficiency. 1 dwg