Abstract: Disclosed is an oil burning system that is capable of burning oils of varying viscosities, including high viscosity waste oils and low viscosity heating oils. Suitable as a new installation or a retrofit modification, the present invention incorporates the use of a variable rate, high-pressure oil delivery system, along with an oil pre-heater, in conjunction with a modified high-pressure atomizing nozzle. Installed in a sliding drawer burner arrangement that allows for quick and easy access, the oil burning system also includes a means by which particulate matter and carbonization build-ups are removed from the burner nozzle automatically, thereby eliminating the need for frequent cleaning.

Abstract: A liquid fuel burner apparatus which comprises a fuel distributing member of a generally conical configuration mounted within a housing, along with means for feeding a liquid fuel to an upper end of the fuel distributing member to allow the liquid fuel to form a film on the outer surface. A vaporizing aperture is formed in the outer surface and a gas supply conduit supplied with a pressurized gaseous material to atomize the fuel for ignition. The unburned fuel is then collected and recycled back to the burner. The apparatus permits the burning of material which may contain small particles which would otherwise clog the nozzle of a conventional apparatus.

Abstract: A safety device for preventing uncontrolled burning in wick-fed liquid fuel burners employs an excess fuel containment compartment (24) which receives any excess fuel which might be fed from a removable tank (60) through a spring-loaded valve in the removable tank cap (61) into fuel supply chamber (40). The excess fuel causes a receptacle (20) in the compartment to move downward. Through a retaining arm (82) and lever (66) such movement activates a pin-drop mechanism. Activation of the pin-drop mechanism closes off the valve in the removable tank cap. Also the mechanism prevents re-opening of the fuel tank valve until the danger of flareup is removed. This safety device also alerts the user of the liquid fuel burner to a dangerous condition by a mechanism comprising a warning gauge needle (34). In addition, the burner can be readily serviced and restored to operation should an excess fuel malfunction occur.

Abstract: An improved apparatus and method for delivering liquid are disclosed for use in fuel burners or atomizers of the type which comprise a hollow atomizer bulb having a convex exterior surface which tapers toward a small aperture through which high pressure gas if forced to atomize liquid as it flows in a thin film over the bulb. To provide thinner films when lower atomization rates are desired and thicker films when higher atomization rates are desired, a feed tube is positioned above the atomizer bulb with its discharge opening oriented so that the vertical distance from its front edge to the surface of the bulb is from 1.5 to 2.0 times the vertical distance of its rear edge to the surface of the bulb. In another embodiment the discharge opening of the feed tube is elongated and has a major axis oriented transversely to the axis of the spray leaving the aperture.

Abstract: The present invention is directed to a fuel supply system for a fuel burner of the type that requires for proper operation an excess flow of fuel to be provided to the burner with that excess being recirculated. The fuel system further requires that sufficient fuel is added to the system to make up for that amount of fuel which is fired or burned. The fuel supply system includes a fuel pump which selectively draws from a fuel supply the make-up fuel flow and from a return path the excess fuel flow for recirculation. At any given moment all fuel flow from one inlet line and the other inlet line is positively closed.

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.

Abstract: A liquid fuel combustion apparatus comprises a combustion cylinder, a fuel reservoir, a housing, a blower and an electrical ignition heater. The reservoir is disposed inside the cylinder to store a liquid fuel supplied from outside of the cylinder. The housing is disposed outside the cylinder to create a space therebetween and has an end wall opposite to an end wall of the cylinder. The blower is disposed outside, and in a spaced apart relation to, the housing and supply air to the space. The heater is supported by the end walls and ignite liquid fuel stored in the reservoir.

Abstract: An improved fuel burner particularly adapted for domestic use and capable of burning fuels such as fuel oil and the like with extremely high efficiency and low pollutant output is comprised of a pair of plenum type atomizers (26,26'), each having a convex surface onto which the fuel is flowed for atomization, the atomizers (26,26') being disposed at the end of a flame tube (3) which in turn is located within a blast tube (1), said atomizers (26,26') further being disposed symmetrically with respect to the axis of both the flame tube (3) and the blast tube (1) whereby the spray output from the atomizers is discharged into the flame tube (3) to create a stable flame front that can be readily ignited by a spark type of ignitor (18). The atomizers are provided with one or more apertures (29') through which atomizing gas is passed to generate the spray, and air access ports (12,12',13) are located along the flame tube to provide the necessary air to complete the combustion process.

Abstract: A burner for hydrocarbon fuel, such as waste lubricating oil for internal combustion engines and the like, has a fuel line terminating in a discharge nozzle and connected to a source of the fuel. Arranged within the fuel line and terminating in a discharge outlet disposed substantially adjacent the discharge nozzle is a gas line connected to a source of a gas under pressure. The gas lifts and atomizes the fuel and causes same to discharge from the nozzle and into a combustion chamber. The latter is preferably formed by a burner can provided with one or more apertures in a sidewall thereof, and having a baffle disposed spaced from, but adjacent to, the discharge nozzle, which is disposed just inside the combustion chamber, for avoiding carbon buildup on the end of the nozzle.

Abstract: A metal foam burner element holds liquid fuel by capillary action. The element is in contact with one or more fuel feed pipes connected to a pressurised fuel supply. The element has air passageways through it so that combustion takes place between air passing through the element and the fuel.