Fuel shut-off system for fuel-burning heater

Details Fuel shut-off system for fuel-burning heater Fuel shut-off system for fuel-burning heater

1993-10-15

1995-07-25

Dority, Carroll B.

Combustion

Timer, programmer, retarder or condition responsive control

By condition of burner feed or feed means

F23N 100

Patent

active

054357187

ABSTRACT:
An oil-burning furnace including a combustion zone, an air passageway through which air is routed to the combustion zone, an air compressor for moving the air through the combustion zone in a pressurized condition and an oil passageway through which oil is routed to the combustion zone for burning in the presence of air utilizes a shutoff assembly for positively shutting of the flow of oil through the fuel passageway upon shutdown of the furnace operation. The shutoff assembly is associated with the air passageway and is actuated in response to a drop in the pressure of air in the air passageway below a preselected level. Thus, the actuation of the shutoff means is coordinated with the de-energizing of the air compressor. In addition, the oil passageway is adapted to shut off the flow of oil at a location along the passageway which is disposed in relatively close proximity to the combustion zone.

REFERENCES:
patent: 1853863 (1932-04-01), Hornbruch
patent: 3269448 (1966-08-01), Martin
patent: 3269450 (1966-08-01), Licata et al.
patent: 3299940 (1967-01-01), Phillips et al.
patent: 4955359 (1990-09-01), Briggs et al.

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