Abstract: An oxygen combustion system includes a boiler to burn fuel using combustion gas composed of oxygen-rich gas and circulating flue gas, a dust remover disposed in a flue through which flue gas discharged from the boiler flows, a second flue leading the combustion gas to the boiler, the combustion gas being made by mixing the circulating flue gas extracted downstream of the dust remover with the oxygen-rich gas, a combustion gas heater exchanging heat between the flue gas flowing between the boiler and dust remover and the combustion gas flowing through the second flue, and a flue gas cooler disposed between the heater and the dust remover to cool the flue gas. A control unit controls at least one of a flow rate and cooling medium temperature of the flue gas cooler such that temperature of the flue gas introduced into the dust remover will be between 90° C. and 140° C.

Abstract: A method supplies reactants, including fuel gas, to burners that discharge the reactants into a furnace process chamber. In a stable flame mode of operation, stable flames are projected from the burners into the furnace process chamber. At a time when the furnace process chamber has a temperature at or above an autoignition temperature of the fuel gas, a diffuse combustion mode is initiated by supplying a selected burner with additional reactants, including reactants diverted from another burner, to blow off the stable flame at the selected burner.

Abstract: A system is provided to automatically detect and reignite one or more gas burners on a cooktop appliance. Upon determining the absence of a flame at a gas burner, a time period ?td is allowed to elapse during which no flame is detected before sparking is initiated to relight the burner. The value of ?td is based upon the rate of flow of gaseous fuel to the burner with longer time periods being used for lower gas flow rates and shorter time periods being used for higher gas flow rates.

Abstract: Counterflow burner having a combustion chamber (5) to which combustible gas (B) and an oxidising agent (0) can be fed from opposite sides, having three planar substrates (1, 2, 3) which are interconnected, lying one above the other, the middle substrate (2) having the combustion chamber (5), from which passages (4), lying in the plane of the substrate, lead to the edge, the upper substrate (3) and the lower substrate (1) being closed, and at least the middle substrate (2) is produced using methods of microsystem technology.

Abstract: The present invention relates to a gas combustor, which includes a casing unit of the gas combustor and a detachable ignition module, the detachable ignition module is to have an igniter being modularized as a single unit, thereby being enabled to be inserted in or removed from an insertion slot preformed on a surface of the casing unit of the gas combustor, and a cathode connecting joint and a anode connecting joint of the detachable ignition module are respectively in contact with or separated from an electric conductive wire installed in the insertion slot, thereby establishing or terminating an electric connection, so the inconvenience and possible danger of replacing the igniter by the user himself is avoided.

Abstract: It is a purpose for the invention to provide a rotating device (107) to generate heat, cold and pressure from the outlet at the rotation axis, by centrifugation pressurized fluid in that it include at least two under-supported U-channel structures (107) where one of the channels (104, 105) from each U-channel structure (107) toward the periphery (107) is in thermal contact, forming a heat exchanger (106) where one of the channels (105) contains a compressible cooling fluid which develops heat from the centrifugal compression in the channel (105), and the heat is transferred to a heating fluid with a lower temperature in the second channel (104) in heat exchanger (106) toward the periphery (107) where heat exchanging ceases, and the U-channels (107) is connected to its inlet—(101, 102) and outlet channels (111, 112) at the rotation axis for the transport of said fluid through the U-channels (104, 105, 108, 109) via the periphery (107), which after the outlet (111) for heating fluid is heat-exploited, and cooli

Abstract: A burner with a central oxidizer supply tube and an outer concentric fuel supply tube has a recycle gas duct arranged between the central oxidizer supply tube and the outer concentric fuel supply tube.

Abstract: An oven for cooking food includes a housing having a front, a back, a top, a bottom, and a cooking chamber in the housing sized and shaped for receiving the food to be cooked. The cooking chamber has a front, a back, an upper portion, and a lower portion. A heating source heats air in the housing. An air mover is mounted generally at the front of the housing for moving heated air in the cooking chamber to produce a more uniform temperature and heat distribution in the cooking chamber.

Abstract: An oven is provided including an oven cavity and an outlet duct for receiving exhaust gas from the oven cavity. The oven further includes a flow control device attached to the outlet duct. The flow control device includes a damper assembly positioned at least partially within the outlet duct. The damper assembly is movable with respect to the outlet duct. The flow control device further includes a drive unit attached to the damper assembly, the drive unit selectively moving the damper assembly between a closed position in which the damper assembly blocks a flow of the exhaust gas through the outlet duct and an opened position. The oven further includes a control system for controlling the damper assembly.

Abstract: A combustor including a housing, an injector body, insulation, an air/fuel premix injector, a hot surface igniter, a fuel injector and a burner. The housing forms a main combustion chamber. The injector body is coupled within the housing and the injector body includes an initial combustion chamber. The insulation lines the initial combustion chamber. The air/fuel premix injector is configured and arranged to dispense a flow of air/fuel mixture into the initial combustion chamber. The hot surface igniter is configured and arranged to heat up and ignite the air/fuel mixture in the initial combustion chamber. The fuel injector dispenses a flow of fuel and the burner dispenses a flow of air. The flow of fuel from the fuel injector and the flow of air from the burner are ignited in the main combustion chamber by the ignition of the air/fuel mixture in the initial combustion chamber.

Abstract: A solar receiver is disclosed. The solar receiver is modular, has multiple tube panels in a rectangular/square/polygonal/circular configuration, and is designed for use with molten salt or another heat transfer fluid. The heat transfer fluid flows in a vertical serpentine path through the sides (facets) of the solar receiver. The solar receiver can be shop assembled and can be used with a support tower to form a solar power system.

Abstract: An evaporator assembly unit, especially for a vehicle heater, includes an evaporator medium carrier (12) with a bottom wall (14), a porous evaporator medium (18) provided on one side of the bottom wall (14) and an electrically excitable ignition element (34). The ignition element is embedded in the material of which the bottom wall (14) is made.

Abstract: According to the required amount of heating, a controller of a combustion apparatus exercises selective on-off switching control on capacity control switching valves for the supplying of gas to three different combustion areas partitioned respectively by a group of three combustion burners, a group of five combustion burners and a group of nine combustion burners, whereby the three combustion areas can selectively be burned, thereby the combustion capacity is changed and switched to any of a plurality of combustion capacity levels. A combustion exhaust temperature sensor is disposed in the vicinity of the inlet of an exhaust stack. Judgment temperatures corresponding respectively to combustion capacity levels for combustion exhaust high-temperature abnormality judgment are set.

Abstract: A furnace having a first drain trap, a first drain outlet associated with the first drain trap, and a second drain outlet associated with the first drain trap, wherein the first drain outlet and the second drain outlet are located relative to the first drain trap so that gravity driven drainage of a liquid from the first drain trap is selectable between the first drain outlet and the second drain outlet in response to a rotation of the furnace.

Abstract: An oven appliance is provided. The oven appliance includes a pair of doors and a pair of flanges. Each flange of the pair of flanges is mounted to a respective one of the pair of doors. The flanges engage and overlap each other when the pair of doors is in a closed position and include features for limiting wear between the flanges.

Abstract: A gas-fired kitchen appliance, comprises (a) a food preparation zone (10); (b) a burner nozzle (12) for supplying heat to said food preparation zone (10); (c) an electromagnetic valve (16) which when energized allows gas to be supplied to the burner nozzle (12) and which when deenergized blocks the gas supply to the burner nozzle; (d) a thermocouple (32) located in proximity of the burner nozzle (12), the thermocouple when heated energizing the electromagnetic valve (16); (e) a cover element (36) associated to said food preparation zone (10), said cover element being movable between a first position which allows normal operation of said food preparation zone and at least one second position in which said food preparation zone is non-operable or idling; and (f) a switching element (34) associated to said cover element (36) and arranged to interrupt the supply of electric energy from the thermocouple (32) to the electromagnetic valve (16) when the cover element (36) is in said second position.

Abstract: Gas burner having at least two flame spreaders, at least one diffusion chamber between the flame spreaders for the diffusion of a primary air/gas mixture for at least one of the flame spreaders, and at least one cross-lighting duct for the flame passage between the flame spreaders. The duct is disposed transversally inside the diffusion chamber to define a first and a second region in the diffusion chamber and has two side walls and one upper wall, for the fluidic direct connection between the first and the second region of the diffusion chamber. The upper wall has at least one hole for the mixture inflow into the duct and the cross-lighting duct has at least one lower opening facing the upper wall of the cross-lighting duct.

Abstract: The present invention relates to a gas combustor, comprising: a gas intake valve, the bottom of a valve tube axially formed in a valve member is installed with a filter member, a first spring is installed above the filter member and inside the valve tube, the top of a valve pin is protruded out of a tube opening formed at and communicated with the top of the valve tube, a plug outwardly protruded at the bottom of the valve pin is abutted against the first spring, the plug is enabled to seal the tube opening through the first spring being stretched, and when the top of the valve pin is axially subject to a force, the valve pin and the plug are downwardly moved, the first spring is compressed thereby enabling the tube opening to be opened.

Abstract: A burner apparatus for a furnace system and a method of burner operation. The burner has a series of fuel ejection structures which at least partially surround the burner wall for ejecting fuel into a combustion region projecting from the forward end of the burner wall. The ejection structures preferably eject fuel outside of the burner wall at alternating angles. Further, the burner apparatus preferably includes at least one additional series of fuel ejection structures which is spaced radially outward from the first series of ejection structures.

Abstract: A portable grill assembly includes a grill grate, a fire tray, the fire tray including a plurality of holes, a plate configured to be secured to the fire tray, a gap created between the plate and the fire tray to enable a uniform flow of oxygen to pass through the gap on all sides of the fire tray into the holes and a grid pattern extending upward from the fire tray to elevate a fuel over the holes, and a support stake. The support stake includes at least one coupler to secure multiple sections of the support stake, the coupler includes a lip to prevent movement of sections of the support stake relative to the coupler. The support stake is configured to secure and position the fire tray a distance above the ground and to secure and position the grill grate a distance above the fire tray.