Abstract: A rotary kiln burner particularly for fine-grained solid fuels such as coal dust, with jet air nozzles which can be adjusted easily and effectively during operation of the kiln in order to change the divergence angle of the high-speed jet air streams to change the flame shape and optimize the combustion. The jet air nozzles are attached with the nozzle openings divergent to the burner axis at the end of jet air pipes. The nozzle openings are arranged around the burner axis, with the axes parallel, with the jet air pipes arranged inside an annular cooling air space surrounding the coal dust channel and enclosed on the outside by the burner housing pipe.

Abstract: The invention relates to a radiant gas burner device comprising a first cylindrical chamber (1) and a first injector (2) for feeding the first chamber with a combustible gas mixture, the first chamber (1) comprising an external peripheral heating surface (10). The device of the invention further comprises a second cylindrical and hollow second chamber, and a second injector (4) for feeding the second chamber with a combustible gas mixture, the second chamber being positioned inside the first chamber (1), separated from the first chamber by a sealed wall, and having an internal heating surface (30), and the first and second injectors (2, 4) being designed for separately feeding the first and second chambers, independently of each other.

Abstract: A fuel reformer burner for a polymer electrolyte membrane fuel cell (PEMFC) system includes a first tube through which a fuel for a fuel reformer is supplied and a second tube through which anode-off gas (AOG) is supplied from a fuel cell stack. The second tube is not connected to the first tube, and an inlet line through which an air is supplied is connected to the first tube.

Abstract: A variable orifice combustor unit 10 comprises an annular combustion chamber 12 extending about a central axis 14 and ending in a discharge nozzle 16. Charging of the chamber 12 takes place from combustion fuel and air supply chambers 18 and 20 via a fuel charging orifice array 22 and an air charging orifice array 24. The orifices 28.1, 28.2 of the orifice arrays 22, 24 are positioned and slanted at the same forward angle in the direction of the nozzle 16 to the effect of their central axes 38, 40 cutting along the longitudinal centre of the combustion chamber 12. The cross sectional sizes of the orifices 28 are adjustable by means of an orificed displaceably mounted cyndrically shaped covering body 44 for the fuel charging side and an orificed cylindrical body 58 for the air charging side both being displaceable in the direction of the axis 12.

Abstract: The present application relates to a burner block (1) comprising a base (2), a plurality of hydrocarbon channels (3) for the passage of hydrocarbon/air mixtures used as reactants, and at least one oxygen channel (4) for the passage of air or an air/oxygen mixture. An ignition burner (5) is optionally present. The burner block allows the combustion of hydrocarbons for the preparation of acetylene at temperatures of <1400° C.

Abstract: A pressurized space heater for burning gaseous fuel has as its main component a generally conical burner tube that receives at its narrow end a combustible mixture of fuel and primary air. Complete combustion in the tube is enhanced by two sets of holes disposed along the tube for admitting secondary air. The location, number and sizes of the holes are so chosen as to ensure complete combustion and to avoid the production of noxious substances.

Abstract: An in situ thermal system is disclosed for enhanced oil recovery and the like from a subterranean formation. The system pressurizes the formation with water whereupon the entire formation is heated to relatively high temperatures in the absence of gas formation to significantly decrease the viscosity of substantially all the crude in the formation and permit recovery thereof. A down hole, fuel fired radiant tube burner of long length is provided to achieve the desired heat patterns within the formation. The burner includes three concentric, closed end tubes with the innermost tube containing a burner and spaced closely adjacent the intermediate tube. A hole pattern in the innermost and intermediate tube establishes a laminar flow of the burner's products of combustion therebetween which modifies the radiation heat flux pattern so that uniform heat is emitted from the outermost tube along its length.

Abstract: A combustion cylinder structure for an oil burner capable of uniformly red-heating an upper portion of upper and lower cylindrical members as well as the remaining part of the members and exhibiting good aesthetic characteristics during combustion operation. The outer cylindrical member is arranged so as to terminate at an upper end thereof below upper ends of the inner cylindrical member and a heat-permeable cylinder and a dish-like inner top plate is formed into a diameter large sufficiently to cause its outer peripheral end to outwardly extend from the inner cylindrical member to the position above the space. Also, the inner cylindrical member is formed at its upper portion opposite to the inner top plate with the vent holes. Also, the inner cylindrical member is formed at its upper portion opposite to the inner top plate with the vent holes.

Abstract: A combustion cylinder structure for an oil burner capable of decreasing in the number of used parts to simplify its construction and assembling. A flame spreading cylinder arranged in an inner cylindrical member downwardly extends through a partition plate arranged in a lower end of the inner cylindrical member into a wick receiving cylinder structure. The flame spreading cylinder is concentratedly formed with a plurality of vent holes at a portion thereof in proximity to a flame spreading plate mounted on the cylinder. The partition plate is formed with a plurality of small through-holes and an inner top plate mounted on the inner cylindrical member is formed with a plurality of small through-holes. The flame spreading cylinder, outer top plate and inner top plate cooperate together to define a space to which air is supplied via the small through-holes of the partition plate and inner top plate.

Abstract: The present invention relates to a combustion equipment to be employed for heating in domestic use or the like. The combustion equipment is provided with an air control cylinder having a closed bottom surface inwards of an inner flame cylinder, and an outer control cylinder inwards of a vaporizing portion, and accordingly, radical deterioration of the CO/CO.sub.2 characteristic can be prevented. Furthermore, the air control cylinder is divided into plural stages one above the other and has a through aperture in the lowermost stage connecting said lowermost stage with an inner air path, and at the same time, the outer control cylinder is formed with through holes. Therefore, the combustion equuipment of the present invention has a large range of adjustment of the combustion volume, and is safe and comfortable in use.

Abstract: Large numbers of vent holes are respectively formed in inner and outer flame cylinders defining an annular combustion chamber to supply air thereto. A total opening area of the vent holes formed in the outer flame cylinder is greater than that of the vent holes formed in the inner flame cylinder. As a result, the heat capacity of the outer flame cylinder is smaller than that of the inner flame cylinder. During combustion, the outer flame cylinder is heated to red-hot. A plurality of projections are formed on the outer wall surface of the inner flame cylinder to allow complete combustion of a fuel vapor.

Abstract: A safety device for an open-type combustor such as a room-type oil stove which is capable of quickly extinguishing the flame of the combustor upon the occurrence of oxygen starvation but which does not operate unnecessarily during ordinary shut-off operations. A thermally deformable element is mounted in the vicinity of a wick guide cylinder or the like for detecting changes in temperature in case of abnormal combustion. An interlock body provided through an operating lever operates an automatic fire-extinguishing unit in response to the thermally deformable element. An engagement/locking portion is provided in the vicinity of the thermally deformable element for engaging and locking the interlock body.

Abstract: A wick temperature control unit is provided for controlling the temperature of a wick having the lower end portion dipped in a fuel tank for storing liquid fuel and the upper end portion inserted in a combustion chamber through a narrow path. The wick soaks up the liquid fuel by capillary action in the combustion chamber and evaporates the liquid fuel therein. The wick temperature control unit holds the temperature of the upper end portion of the wick in accordance with a given heating power state, thereby contributing to widen a heating power adjustment range.

Abstract: A combustion cylinder construction for an oil burner is disclosed which is adapted to adjust combustion while preventing the adhesion of soot, moisture and the like on the inner surface of a heat-permeable cylinder to keep it clean during combustion. The combustion cylinder construction includes a first heat-permeable cylinder and a second heat-permeable cylinder supported on the first heat-permeable cylinder with a gap being defined therebetween which serves to introduce air from the exterior therethrough to the overall inner surface of the second heat-permeable cylinder.

Abstract: An oil heater having a wick fed radiant burner which comprises a wick adjusting shaft rotatable in first and second directions about the longitudinal axis thereof; a wick holder for moving together therewith a wick between an extinguishing position and a maximum combustion position past a minimum combustion position in response to the rotation of the shaft; a ratchet wheel mounted on the shaft for displacement axially of the shaft; an actuating pin mounted on the shaft and angularly movable together with the shaft; an abutment bank provided on the wheel for defining the angular distance over which the pin moves, which angular distance corresponds to the distance of movement of the wick holder between the maximum combustion position and the extinguishing position; and a one-way stopper provided on the wheel and operable to permit the pin to pass thereover during the rotation of the shaft in the second direction, but to restrain the pin from passing thereover during the rotation of the shaft in the first direct

Abstract: A combustion cylinder construction for an oil space heater is disclosed which is constructed to dispose a uniform air flow forming mechanism between an outermost heat-permeable cylinder and an outer cylindrical member of a double combustion cylinder, thereby not only to keep the double combustion cylinder in a red-heated state, but also to carry out the formation of a uniform and stable white-yellow flame and to complete combustion at a flame spreading means. There is also disclosed a combustion cylinder construction which further includes a heat ray reflecting means to render the temperature profiles through the heat-permeable cylinder as uniform as possible, resulting in an oil space heater having a long service life.

Abstract: In a liquid fuel burner of the type wherein vaporization of the fuel is sustained by the heat of its own flame, an oxygen sensor is located in the flame to provide a signal when the flame diminishes indicating the occurrence of an oxygen shortage condition to permit a safety device to automatically extinguish the flame.

Abstract: A liquid fuel combustion apparatus comprises a fuel tank, a wick partially immersed in fuel in thetank, and a combustion chamber enclosing the upper portion of the wick. The wick has two sections, one section being composed of a gasifying wick element of a glass fiber material which contains at least at the top portion thereof 80% or more of silica, alumina or a mixture thereof. The other section is a suction wick element having good fuel sucking properties. The wick may be integrally constituted of a glass fiber material which contains at least the top portion thereof 80% or more of silica, alumina or a mixture thereof. The combustion chamber preferably includes an inner cylinder, an outer cylinder and a red heat cylinder provided between the inner and outer cylinders.

Abstract: A double-cylinder type oil burner having an inner flame cylinder and an outer flame cylinder. A red-heatable cylinder is connected to the upper end of the inner flame cylinder with a secondary air inlet left therebetween. A damper mechanism for varying the opening in the upper end of the red-heatable cylinder is provided on the upper end of the red-heatable cylinder. According to this arrangement, it is possible to vary the burning rate over a wide range and to vary the red-heated area in accordance with the rate of burning.

Abstract: A burner for heating air flowing in a passage in which the burner is disposed comprises a tube connected to the gas supply. The tube has mixing plates with flow apertures for the air secured to it to diverge from each other conically in the direction of air flow and is provided with gas outlet apertures between the mixing plates. The burner also comprises ignition means for the gas. The tube is in the form of a circular annulus and has gas outlet apertures in circumferential directions. The mixing plates consist of an outer conically diverging and an inner conically converging annular plate, the plates being at least partially bounded over their axial length by an air guide plate which converges conically in the direction of air flow and which is secured to the wall of the air passage for axial displacement. The ignition means are disposed in front of the gas outlet apertures which are arranged on a circle or a plurality of concentric circles.

Abstract: A combustion cylinder construction for an oil space heater of the type for radiating heat rays is disclosed which is capable of uniformly red-heating an outer surface of an outer cylindrical member of a double combustion cylinder and efficiently radiating heat rays from the red-hot outer surface and is capable of completely burning an incomplete combustion gas and the like at a flame spreader to form a white-yellow flame and efficiently radiating heat rays from the flame. The outer cylindrical member has through-holes larger than those of an inner cylindrical member and is provided at the upper portion thereof with a recess having through-holes. The combustion cylinder and flame spreader are surrounded by a single heat-permeable cylinder.

Abstract: A liquid fuel burning device suitable for kerosene stove, kerosene kitchen range or the like. The device has an inner and outer flame sleeves each having a multiplicity of pores and a wick interposed between these sleeves. The wick has a fuel evaporating portion projectable into the annular burning space formed between these sleeves. At least one of these sleeves is provided with at least one vertical row of air pores in its portion facing the fuel evaporating portion of the wick. Above the region of vertical row of air pores, formed is a horizontal row of air pores having a multiplicity of pores arranged at a higher density than the pores in the other portion of the wall. In the case where the vertical and horizontal rows of air pores are formed in the inner flame sleeve, a partition plate having apertures is attached to the inner side of the inner flame sleeve at a level above the horizontal row or air pores.

Abstract: A device for vertically moving a wick in an oil burner is disclosed which is capable of constantly ensuring the normal combustion operation of the oil burner. The device includes a drive shaft having a pinion, a rack disposed adjacent to a wick receiving chamber of the burner which is engaged with the pinion and connected to a wick to vertically move it when the drive shaft is rotated, and a stop member for stopping the movement of the rack with respect to the pinion only when the wick is lowered to the minimum normal combustion position to thereby ensure the normal combustion.

Abstract: In a combustion appliance with a safety device therein, an inner flame cylinder, a red-heat cylinder and an outer cylinder disposed concentrically on the outer side of the red-heat cylinder are provided to constitute a combustor and an oxygen sensor is disposed in the rear flow of the combustion flames of the combustor and in a position where the air excess ratio of the flames can be detected. During the incomplete combustion through air feed shortage or the like caused due to dust clogging or the like as well as during the oxygen depression, the oxygen sensor can detect changes in the flames or changes in the red-heat condition of the red-heat cylinder to stop the burning operation thereby to secure the safety.

Abstract: A petroleum combustion device for heating rooms or the like comprising a primary combustion chamber, a secondary combustion chamber disposed on the primary combustion chamber and provided at that portion of its base plate which is outside an outer cylinder of the primary combustion chamber with an air path and a flame extension device arranged in the secondary combustion chamber and communicated with the upper portion of an inner flame cylinder of the primary combustion chamber.