Furnace with draft-limiter and ventilation

Details Furnace with draft-limiter and ventilation Furnace with draft-limiter and ventilation

1981-04-14

1983-09-20

O'Connor, Daniel J.

Stoves and furnaces

Dampers

Stovepipe

126312, F23L 300

Patent

active

044049560

ABSTRACT:
In an exhaust gas duct from a furnace a ventilation opening with a ventilation flap is openable in chronological conjunction with the cut-off of the furnace and it is closable in chronological conjunction with the switching on of the furnace. The ventilation opening is formed by a draft-limiter opening located downstream from the furnace and the ventilation flap is formed by a draft-limiter flap. During a pause in furnace operation, the draft-limiter flap is held in an open position independently of the pressure difference prevailing at the draft-limiter flap. One opening and one flap are eliminated. The draft-limiter flap provides the ventilation function as well as the draft-limiter function. If necessary, it can be installed in a small space together with an exhaust gas flap.

REFERENCES:
patent: 85931 (1869-01-01), Hessenbruch
patent: 208800 (1878-10-01), Dunklee
patent: 440229 (1890-11-01), Keith
patent: 656895 (1900-08-01), King
patent: 1721089 (1929-07-01), Reaser
patent: 1943342 (1934-01-01), Mortimer
patent: 1963640 (1934-06-01), Alexander
patent: 2009782 (1935-07-01), Maurer
patent: 2011103 (1935-08-01), Franz
patent: 2508885 (1950-05-01), Mackay
patent: 3236228 (1966-02-01), Hodgins

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