| 摘要 |
Flow Control Module and Method for Liquid Fuel Burners and Liquid Atomizers An improved apparatus is disclosed for controlling the flow of liquid fuel in fuel burners of the type which comprise a hollow atomizer bulb having a smooth, preferably convex exterior surface which tapers toward a small aperture through which high pressure air is forced to atomize fuel as it flows in a thin film over the exterior surface of the bulb. To ensure that the feed tube for liquid fuel positioned above the atomizer bulb is quickly and thoroughly flushed of air before atomization begins and that a film of fuel is reliably established over the entire exterior surface of the atomizer bulb prior to the introduction of high pressure air to aperture, fuel is drawn from a sump by a constant displacement pump which directs a flow of fuel into a deaeration chamber having a suitable baffle for separating entrained air and dissipating dynamic flow effects. The inlet of the feed tube is positioned at the lower end of the deaeration chamber so that as the chamber fills with liquid fuel, any air in the feed tube is quickly flushed. The upper end of the deaeration chamber is closed and provided with an inlet to a siphon conduit which preferably empties into the sump. An adjustment screw or plus valve is provided to permit variation of the flow through the siphon and, hence, variation of the flow over the atomization bulb. To provide a constant flow rate of atomized fuel leaving the aperture even as the temperature of the fuel varies, a temperature sensitive valve may be provided at the outlet of the pump with a suitable bypass to the sump or in the siphon conduit or in both locations. Methods of delivering liquid fuel are disclosed for such atomizing systems. |
