Abstract: A small, portable tabletop type burning apparatus for burning an aroma producing combustible material in a manner to produce soothing plumes of smoke for inhalation by the user.

Abstract: A combustion chamber assembly for a heating device includes a combustion chamber housing which forms a combustion chamber, and an ignition member which projects with an ignition section into the combustion chamber. An evaporator medium, surrounding the combustion chamber radially outward at least regionally, is provided on an outer circumferential wall, bounding the combustion chamber radially outward, of the combustion chamber housing, into which evaporator medium fuel to be evaporated is introduced through the outer circumferential wall.

Abstract: In an evaporation burner with a combustion chamber (1) for a heater or the like with a peripheral boundary wall (29), a front boundary wall (6) and an air-supply nozzle (8) projecting coaxially into the combustion chamber (1) with radial air outlets (9) through the nozzle wall, a guiding device (32) for a whirling air supply is fitted at or upstream of the air supply nozzle (8) of the combustion chamber (1), in which said air supply nozzle has a diaphragm (10) for axial back-flow (R) of the exhaust gas or the air at the center of turbulence of the whirling air supply (L). In an axial extension of the combustion chamber may be fitted a coaxial flame pipe (20), which together with the peripheral boundary wall (2), may constitute a one-piece (deep-drawn) sheet-metal component and the rest of the combustion chamber may be a cast component.

Abstract: A kerosene combustion device includes a burner body having a heated inner surface against which kerosene and combustion air are impacted, to cause the kerosene to be vaporized prior to being ignited. The kerosene is introduced into the burner body through a pipe having an outlet configured to cause the discharging kerosene to be spirally moved and to have its velocity and pressure suddenly reduced. The pipe extends through a venturi tube which conducts the combustion air. The venturi tube includes two tapers spaced apart along its longitudinal axis to cause the air velocity to be gradually increased. The burner body includes an opening into which the venturi tube extends. That opening is formed by an inwardly projecting portion of the burner body against which the venturi tube bears, in order to be stabilized thereby.

Abstract: Combustion device of a kerosene fan heater, which can inhibit accumulation of tar inside of the carburetor and can improve a mixing efficiency of fuel of kerosene and air.The combustion device includes a spraying means for spraying flammable substance, a vaporizing means for vaporizing the sprayed flammable substance before burning the flammable substance, and a dividing means disposed in the vaporizing means for dividing the sprayed flammable substance and making the divided flammable substance swirl in opposite direction to each other.

Abstract: A method and apparatus for high-efficiency burning of a liquid fuel such as kerosine after it has been foamed. The fuel is converted into a fine foam by supplying foaming air thereinto through a porous element having a mean pore diameter of 1-200 .mu.m and air sufficient for ensuring complete combustion is separately supplied to a combustion chamber. The foaming air is passed through the porous element at an apparent velocity of 0.01-1 m/s. The porous element is a sintered metal body having a density of 4-6 g/cm.sup.3 and a void ratio of 35-45% or a ceramic body having a density of 2.0-5.0 g/cm.sup.3 and an apparent porosity of 15-45%. The method and apparatus enable ignition, prolonged continuous combustion and extinguishment to be conducted stably and with exceedingly low generation of CO, NO.sub.x and soot, and, as such are applicable to oil space heaters and industrial boilers.

Abstract: A liquid fuel combustor comprises a gasification promoter unit housed within a heated burner body for enhancing the gasification capability of the atomized fuel. The gasification promoter unit is provided with a downwardly convex surface. A fuel nozzle has its outlet facing toward that surface to direct fuel thereagainst. A heater is embedded in the promoter unit to heat the fuel particulates emerging from the fuel nozzle.

Abstract: A method and apparatus for burning a liquid fuel by introducing gas into the liquid fuel through capillaries, a porous plate, cloth, a particle layer or the like to bubble the liquid fuel to control the fuel level and simultaneously by supplying combustion air separately to accomplish complete combustion.

Abstract: A method for burning foamed liquid fuel in a combustion chamber comprises the steps of foaming the liquid fuel and separately supplying air required for continuous stable combustion of the foamed fuel. An apparatus for carrying out the method is also disclosed.

Abstract: A microwave convection oven in which a gas burner positioned outside the oven cavity has its combustion products circulated through the oven through screens for preventing escape of the microwave energy from the oven cavity with the burner being of the multi-ported type providing high burner density and having secondary air closely adjacent all portions of the burner to reduce its incondescent flame length while permitting the burner to be positioned in a region between the screened vapor outlet region the oven and the inlet of a blower system for mixing the output of the burner with the vapor drawn from the oven thus the temperature of the vapor outlet region is maintained below that at which ionization of the vapor being drawn from the oven might produce leakage of microwave energy through the screen.

Abstract: A pot-type burner is equipped with baffle plates for establishing recirculation zones within the burner for efficiently mixing air and gas in a conventional manner. The burner construction is improved by removing the combustion ring, and in its stead adding an annular dome. This initiates sonic pulsations, sustained within a heat exchanger housing which has critical dimensions relative to the burner parts. The pulsations produce improved combustion.