Combustion – With apparatus cleaning – purging or scavenging means
Patent
1979-03-05
1981-05-05
Moy, Joseph Man-Fu
Combustion
With apparatus cleaning, purging or scavenging means
137107, 251 77, 222571, F23D 1138
Patent
active
042656133
ABSTRACT:
A safety device for an oil burner includes a pump which has a drive cylinder portion with a double-acting piston movable therein which is connected through a connecting rod to a suction piston portion which is movable in a suction portion of the pump cylinder. The oil burner is supplied with fuel oil from a supply line having a shutoff valve or valves which are connected through a suction line to the suction part of the piston. The suction portion is connected through a check valve to a return line and the drive cylinder is connected on respective opposite sides of the piston through valve means for regulating the movement of the drive piston so that it moves after the burner is turned off to displace the suction piston to effect a suction on the supply line to the oil lance of the burner so as to withdraw the oil therefrom.
REFERENCES:
patent: 359315 (1887-03-01), Cregier
patent: 3343826 (1967-09-01), Manny et al.
patent: 3951311 (1976-04-01), Johansson
patent: 3987708 (1976-10-01), Uhrich
patent: 3987810 (1976-10-01), Bjorklund
patent: 4142707 (1979-03-01), Bjorklund
Deutsche Babcock Aktiengesellschaft
Man-Fu Moy Joseph
LandOfFree
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