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  Vapor fuel combustion systemUSPTO Application #: 20070264602Title: Vapor fuel combustion system Abstract: A burner, for burning a liquid fuel/compressed air fuel mixture, comprising a discharge nozzle having a mixing chamber for mixing a liquid fuel with compressed air and discharging the fuel mixture via a discharge orifice. The burner is coupled to a liquid fuel storage source for storing and supplying the liquid fuel, at a sight positive pressure, to the mixing chamber and the burner also coupled to a source of compressed air which is supplied to the mixing chamber. An igniter is provided for igniting the fuel mixture, discharged from the discharge orifice in a substantially atomized form, for rapid and through combustion of the fuel mixture. Additional ambient air is also supplied, via a variable speed fan, to assist with complete combustion of the fuel mixture. (end of abstract) Agent: Davis & Bujold, P.l.l.c. - Concord, NH, US Inventors: Henry E. FRENETTE, Eugene R. FRENETTE USPTO Applicaton #: 20070264602 - Class: 431253000 (USPTO) Related Patent Categories: Combustion, Combined The Patent Description & Claims data below is from USPTO Patent Application 20070264602. Brief Patent Description - Full Patent Description - Patent Application Claims
[0001] This application claims priority from U.S. application Ser. No. 11/657,816 filed Jan. 25, 2007 which claims the benefit of U.S. provisional patent application Ser. No. 60/762,551 filed Jan. 26, 2006. FIELD OF THE INVENTION [0002] The present invention relates to an improved fuel source which is directed at achieving substantially "perfect combustion" of the fuel source so that substantially all of the fuel source is converted into CO.sub.2 and H.sub.2O without any significant amount of unburned hydrocarbons. BACKGROUND OF THE INVENTION [0003] As is well known in the art, the combustion of most fuels typically results from the combustion of fuel and air whereby the byproducts are typically unburned hydrocarbons, carbon dioxide, nitric oxides, carbon monoxide, and water. One of the drawbacks associated with such combustion is that the unburned hydrocarbons are normally vented to and pollute the atmosphere. In addition, the combustion byproducts tend to leave the combustion chamber in a heated state, thus carrying heat away from the combustion region, thereby reducing the energy efficiency of the combustion system. SUMMARY OF THE INVENTION [0004] Wherefore, it is an object of the present invention to overcome the drawbacks associated with the prior art combustion of fuel so as to approach a substantially "perfect combustion" in which such fuel (i.e., fuels containing hydrocarbons) and the air are substantially completely reacted with one another to result in substantially only carbon dioxide (CO.sub.2) and water (H.sub.2O) and unaffected nitrogen (NO.sub.2). [0005] A object of the present invention is to provide a burner which is relatively inexpensive to manufacture but which has an improved efficiency while still minimizing the generation of CO.sub.2 during operation thereof. [0006] A further object of the present invention is to atomize or vaporize substantially all of the fuel components and mix the vaporized fuel components with an adequate supply of air (e.g., oxygen) to thereby result in complete and thorough combustion of all of the fuel components (i.e., hydrocarbons) so as to minimize the discharge of any pollutants (e.g., unburned hydrocarbons) which are exhausted to the atmosphere. Such complete combustion thereby increases the overall energy efficiency of the combustion system. [0007] Yet another object of the present invention is to minimize the consumption of the fuel product, during combustion, and maximize utilization of the air to thereby result in a clean and more thorough combustion of the fuel components. [0008] A still further object of the present invention is to combine two different fuels with one another, e.g., a gaseous fuel component such as compressed air, propane, natural gas, etc., and a liquid fuel component such as gasoline, kerosene, #2 home heating oil, diesel fuels such, as standard diesel fuel and bio-diesel, or some other petroleum product and form a mixed atomized and/or vaporized fuel component thereof which, when burned, results in the complete and thorough combustion of the mixed vaporized fuel component. [0009] The present invention also relates to a burner for burning a fuel mixture, the burner comprising: a discharge nozzle having a mixing chamber; a liquid fuel reservoir for supplying liquid fuel to the mixing chamber, with the liquid fuel being feed from the reservoir to mixing chamber at a slight positive pressure; a source for supplying compressed air to the mixing chamber which, during operation of the burner, mixes with the liquid fuel to form a fuel mixture therefrom for discharge by the discharge nozzle; and an igniter for igniting the fuel mixture discharged by the discharge nozzle. [0010] The present invention also relates to a burner for burning a fuel mixture, the burner comprising: a discharge nozzle having an mixing chamber; a liquid fuel reservoir for supplying liquid fuel to the mixing chamber, with the liquid fuel being feed from the reservoir to mixing chamber at a positive pressure of less than 35 inches of water; a source for supplying compressed air to the mixing chamber at a pressurize of between 10 and 30 psi which, during operation of the burner, mixes with the liquid fuel to form a fuel mixture therefrom for discharge by the discharge nozzle; the discharge nozzle comprising concentric first and second nozzles and the liquid fuel is supplied to and discharged by the first nozzle into the mixing chamber and the compressed air mixes with the liquid fuel, within the mixing chamber and the fuel mixture being discharged by the second nozzle such that the liquid fuel mixture is atomized substantially immediately upon being discharged therefrom, and the fuel mixture being discharged by the second nozzle; and an igniter for igniting the fuel mixture discharged by the discharge nozzle and generating heat within a furnace. [0011] The present invention finally relates to a method of providing heat, the method comprising the steps of: providing a discharge nozzle with a mixing chamber; supplying a liquid fuel, from a liquid fuel reservoir, to the mixing chamber, with the liquid fuel being supplied at a positive pressure of less than 35 inches of water; supplying pressurized air, at a pressurize of between 10 and 30 psi, to the mixing chamber for mixing with the liquid fuel and forming a fuel mixture therefrom for discharge by the discharge nozzle; forming the discharge nozzle as concentric first and second nozzles with the liquid fuel being supplied to and discharged by the first nozzle into the mixing chamber and the compressed air mixing with the liquid fuel, within the mixing chamber, and the fuel mixture being discharged by the second nozzle; and the fuel mixture being discharged by the second nozzle such that the liquid fuel mixture is atomized substantially immediately upon being discharged therefrom; and igniting the fuel mixture, discharged by the discharge nozzle, and generating heat within a furnace. BRIEF DESCRIPTION OF THE DRAWINGS [0012] The invention will now be described, by way of example, with reference to the accompanying drawings in which: [0013] FIG. 1 is a diagrammatic drawing showing the basic components for the improved fuel combustion system according to the present invention; [0014] FIG. 2 is a diagrammatic drawing showing a mixing chamber of the fuel combustion system in greater detail; [0015] FIG. 3 is a diagrammatic drawing of a second embodiment of the improved fuel combustion system according to the present invention; [0016] FIG. 4 is a diagrammatic drawing of the second embodiment of the improved fuel combustion system incorporated into a heating system; and [0017] FIG. 5 is a diagrammatic drawing of a spray nozzle of the second embodiment of the improved fuel combustion system. [0018] FIG. 6 is a block diagrammatic of a third embodiment of the improved fuel combustion system for use with a heating system; [0019] FIG. 7 is a diagrammatic view of the third embodiment of the improved fuel combustion system showing further details thereof; [0020] FIG. 8 is a diagrammatic wiring diagram of the third embodiment of the present invention; Continue reading... Full patent description for Vapor fuel combustion system Brief Patent Description - Full Patent Description - Patent Application Claims Click on the above for other options relating to this Vapor fuel combustion system patent application. ###  How KEYWORD MONITOR works... a FREE service from FreshPatents1. Sign up (takes 30 seconds). 2. Fill in the keywords to be monitored. 3. Each week you receive an email with patent applications related to your keywords. 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