초록 ▼

A tank ventilation exhaust fan having the unique ability to provided positive exhaust on a continuous basis while diluting the contaminated air and vapors, being emitted by the tank, with fresh air at a ratio in excess of five to one. A mixing chamber within the fan housing allows the fan to mix fre

A tank ventilation exhaust fan having the unique ability to provided positive exhaust on a continuous basis while diluting the contaminated air and vapors, being emitted by the tank, with fresh air at a ratio in excess of five to one. A mixing chamber within the fan housing allows the fan to mix fresh air with vapors from the tank and expel the mixture over several hours. An alternate embodiment allows for continuous dilution of the tank\s vapors.

대표청구항 ▼

A tank ventilation apparatus for the exhausting and dilution of gases emitted by a tank capable of sustaining a vacuum comprising: a) a housing having an intake port at one end, a primary exhaust port at its opposite end, said intake port being attachable to an outlet port of a vent tube extending f

A tank ventilation apparatus for the exhausting and dilution of gases emitted by a tank capable of sustaining a vacuum comprising: a) a housing having an intake port at one end, a primary exhaust port at its opposite end, said intake port being attachable to an outlet port of a vent tube extending from an otherwise sealed container; b) an air mixing chamber, located intermediate said housing, having an inside diameter greater than said intake or primary exhaust ports; c) a rotatable fan and electrical drive unit, located within said mixing chamber; and d) an auxiliary exhaust port defined by an orifice exiting said mixing chamber adjacent the periphery of said rotatable fan.