Combustion – Timer – programmer – retarder or condition responsive control – Providing repeated start attempts prior to shutdown upon...
Patent
1983-08-01
1984-07-10
Dority, Jr., Carroll B.
Combustion
Timer, programmer, retarder or condition responsive control
Providing repeated start attempts prior to shutdown upon...
431 31, 431 19, 431 25, 431 1, F23N 500
Patent
active
044590997
ABSTRACT:
A fuel and ignition control for a pulse combustion furnace includes both analog and digital timing means for fail safe operation, fuel valve control means which depend on proper cyclic operation for proper function, and flame detection means which are fail safe due to the necessity of its components providing a critical phase shift angle. The fuel control valve means includes energy storage means which is stepwise depleted to positively limit the time of valve energization in the absence of detection of flame, and is also disabled after a predetermined time by the digital timing means.
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Grunden Michael T.
Roberts William J.
Allied Corporation
DeClercq James P.
Dority Jr. Carroll B.
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