Combustion – Timer – programmer – retarder or condition responsive control – By combustion or combustion zone sensor
Patent
1981-05-05
1983-09-06
Dority, Jr., Carroll B.
Combustion
Timer, programmer, retarder or condition responsive control
By combustion or combustion zone sensor
431 75, 431340, 126 93, F23N 508
Patent
active
044026641
ABSTRACT:
An improved waste oil heater that includes a vaporizer pan having a mounting ring, a replaceable aluminum foil piece mounted on the ring to form the bottom of the pan and a member mounted on the ring to provide threads, a tool threadingly engageable with the threaded ring member for breaking the pan loose from the bottom wall of a burner pot and removing the ring with caked residue thereon for purposes of cleaning, the burner pot having a novel arrangement of apertures for flow of air into the pot, and solid state electronic control apparatus to control the feed of waste oil that automatically compensates for variations in viscosities and caloric values found in a variety of used oils and automatically discontinues the feed in the event the flame in the burner pot goes out.
A thermocouple in the exhaust gas stream in the heater or in the stack senses the exhaust gas temperature and the control circuit operates the motor of the pump to feed oil to the pan at a fast or slow rate as determined by a room thermostat and the sensed stack gas temperature. The feeding of oil by the pump is controlled by the thermostat which alters the effect of the thermocouple by requiring a higher thermocouple voltage to produce slow feeding when the thermostat calls for more heat to be produced.
REFERENCES:
patent: 2306443 (1942-12-01), Howard
patent: 3017921 (1962-01-01), Stierlin
patent: 3017925 (1962-01-01), Breese et al.
patent: 4351316 (1982-09-01), Kroll
Dority Jr. Carroll B.
Johnson Clayton R.
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