VENT HOOD Russian patent published in 2005 - IPC

FIELD: ventilation equipment.

SUBSTANCE: vent hood can be used as a local suction of hazardous matters. Vent hood has case, chamber connected with case, ejector, ventilator mounted inside chamber, which communicates with mixing chamber of ejector. Chamber with ventilator is mounted onto case that has holes in its walls. Ventilator is mounted at entrance of chamber, which is designed to have entrance to exit squares that relate as 2:2. Mixing chamber of ejector is formed by lower surface of mentioned chamber and sloped guiding partition mounted inside the case. Working jet is created by means of ventilator, which jet entrains content of case, i. E. sucks aggressive reagents away due to ejection.

EFFECT: improved efficiency of operation.

1 dwg