Insulated external exhaust's end

Details Insulated external exhaust's end Insulated external exhaust's end

1995-01-30

1998-04-07

Joyce, Harold

Ventilation

Having outlet airway

Having readliy movable air regulating louver, damper, or cover

454353, 454360, F23L 1702

Patent

active

057357390

ABSTRACT:
An outdoor exhaust's end of part of an indoor building system requiring an exhaust duct to evacuate air or other kinds of smoke or gases to the building's outside. The exhaust's end comprising a double enclosure that prevents the outdoor air from comming into the building by the exhaust duct and captures an air chamber in a rotary inner cylinder, which act like a thermal insulation between the inlet and the outlet of the exhaust's end. A trap located on the rotary inner cylinder is activated by the exhaust flow, that comes upward and rotate the inner cylinder, permitting to the exhaust flow to past through an opening located under the trap, to come in the cylinder and flow out by a second opening. The exhaust flow out by the outlet downward duct, that protect the exhaust's end against rain or snow without restricting the flow.

REFERENCES:
patent: 1369099 (1921-02-01), Hanson
patent: 2551965 (1951-05-01), Petersen et al.

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