Apparatus for oil burners
AssigneeImo AB
InventorsHans Edman, Arne Lonnebring
Life of this patent
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Abstract
Pump apparatus, for delivering oil to an oil burner which is supplied with oil in excess, the excess oil being collected in a vessel, includes a pump receiving oil partly from an oil tank and partly from the collection vessel, for delivering the oil to the burner. The pump is provided with separate inlets for oil from the tank and vessel. In the inlet for oil from the tank there is mounted a shut-off valve adapted for opening under the action of a sub-pressure on the pump suction side. In the inlet for oil from the collection vessel there is mounted a valve adapted for actuation by the head of liquid in the collection vessel for opening or closing when said head is respectively above or below a given level.
Claims3
An oil burner pumping station comprising:
- a collection tank for collecting excess oil delivered to an oil burner;
- a main supply tank;
- pumping means having an outlet for delivering oil to the burner and having a first inlet connected to the main supply tank and a second inlet, communicating with the first inlet, and connected to the collection tank;
- first valve means connected between the first inlet and the supply tank for supplying oil therebetween when the pressure at the first inlet drops below a preselected level;
- second valve means connected between the second inlet and the collection tank for transferring excess oil therebetween when the head of oil in the collection tank exceeds a preselected level, independent of oil supply occurring from the main supply tank.
Dependencies are inferred from the claim text.