Stoves and furnaces – Hot-air furnaces – Compressed air
Patent
1981-05-14
1982-06-29
O'Connor, Daniel J.
Stoves and furnaces
Hot-air furnaces
Compressed air
126116A, 431 1, F24H 302
Patent
active
043367917
ABSTRACT:
An improved control system for a pulse combustion apparatus is disclosed. The system includes starter means operable to activate blower means for starting the apparatus. First switch means is provided and is responsive to a first predetermined air velocity in the air intake of the apparatus as representing satisfactory operation of the blower means. The first switch means is coupled to and adapted to activate the gas supply means and ignition means of the apparatus when the first predetermined velocity is achieved. Second switch means is also provided and is responsive to a second predetermined air intake velocity representing establishment of combustion in the combustion chamber and adapted to deactivate the ignition means and blower means while maintaining the gas supply when the second predetermined air intake velocity is achieved. Timer means is coupled to the starter means, gas supply means and second switch means and is adapted to shut off the gas supply means if the second switch means has not been operated after a predetermined time interval from initial operation of the starter means. The control system may also include modulating timer means for operating the apparatus in a modulated mode. The invention also provides a number of improvements in pulse combustion apparatus generally, including noise attenuating means.
REFERENCES:
patent: 2599101 (1952-06-01), Frerer
patent: 2708926 (1955-05-01), Huber
patent: 2786632 (1957-03-01), Cunnien
patent: 2916032 (1959-12-01), Kitchen
patent: 3051227 (1962-08-01), Robson
patent: 3267985 (1966-08-01), Kitchen
patent: 3472220 (1969-10-01), Willson
patent: 3683887 (1972-08-01), Sammut
patent: 4164210 (1979-08-01), Hollowell
patent: 4241720 (1980-12-01), Kitchen
patent: 4241723 (1980-12-01), Kitchen
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