Patent ID: 6398543
Filing Date: 2002-06-04
Classification: F23D

Abstract:
A method for delivering fuel oil from a pressurized fuel oil source to an airblast atomizer subassembly on a low firing rate fuel oil burner assembly, the method comprising:providing a flow control device having a body defining a bore extending between an inlet end of the bore and an outlet end of the bore, said flow control device including a rod disposed coaxially within the bore in a close fitting relationship, and at least one of the bore and the rod being threaded to define a passageway extending along a circuitous path intermediate the inlet and outlet ends of the bore through which the fuel oil must pass in flowing from the input end of the bore to the output end of the bore, which passageway has a size and shape adapted to achieve a desired rate of flow of the fuel oil to the airblast atomizer subassembly; and delivering the fuel oil from the pressurized fuel oil source to the airblast atomizer subassembly through the passageway in the flow control device.