Fuel supply unit for an oil burner
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United States of America Patent
Stats
-
Dec 2, 1997
Grant Date -
N/A
app pub date -
Mar 17, 1995
filing date -
Mar 17, 1995
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A fuel supply unit adapted to supply a relatively constant flow of fuel oil to an oil burner independently of the pressure of the fuel at a discharge port. The fuel supply unit includes a pump which draws fuel oil from a storage tank and which supplies pressurized fuel to an outlet chamber. The fuel then flows from the outlet chamber to the burner by way of the discharge port. A metering orifice is located between the outlet chamber and the discharge port to control the flow rate of the fuel delivered to the burner, the volumetric flow rate of fuel being related to the pressure differential across the metering orifice. A regulating valve senses the pressure of the fuel at the discharge port and adjusts the pressure of the fuel in the outlet chamber to maintain a relatively constant pressure differential across the metering orifice.
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