Abstract: In order to realize a catalytic combustion apparatus capable of effectively utilizing radiation from a surface of a catalytic element, providing a higher efficiency of heat exchange, and characterized in superior characteristics of an exhaust gas, a catalytic combustion apparatus according to the invention comprises a catalytic element 7 in the shape of a plate consisting of multiple through-holes for combusting a mixed gas of a fuel gas and air and a combustion chamber 6 accommodating the catalytic element 7, and incorporating a radiated heat receiving plate 11 that is positioned in opposition to either one of two surfaces of the catalytic element 7 as a part of its side walls.

Abstract: A mixed gas supply portion 1 for mixing fuel with air, a mixed gas ejection portion 2 for ejecting the mixed gas mixed by the mixed gas supply portion 1, a breathable first catalyst body 5 provided downstream of the mixed gas supply portion 2, a breathable second catalyst body 7 provided downstream of the first catalyst body 5, a separation board a 6 for increasing gas flow resistance provided between the first catalyst body 5 and the second catalyst body 7, a heat exchange portion 13 having a heated fluid passage 14 positioned on the peripheral part, a radiant heat reception portion 3 provided upstream of the first catalyst body 5 and integrated with the heat exchange portion 13, and a separation board b 8 and a separation board c 10 provided downstream of the second catalyst body 7 for increasing flow resistance of the mixed gas and/or the combustion gas thereof are provided, and the separation board a 6, the separation board b 8, the separation board c 10 and the heat exchange portion 13 are integrated.

Abstract: A combustion apparatus has a fuel supply section; an air blowing section for supplying combustion air; a mixing section for mixing the fuel with the combustion air; a plurality of first catalyst bodies which are arranged substantially in parallel with each other to divide the downstream location in the flow direction of mixture into a plurality of flow paths; and a first heat receiving section configured by a plurality of heat receiving fins arranged in flow paths divided by said first catalyst bodies and a cooling path penetrating the heat receiving fins, the opposed heat receiving fin and first catalyst body being characterized in that the area of the heat receiving fin on the upstream side of said cooling path is smaller than the area of the first catalyst body on the upstream side of the cooling path.

Abstract: A catalytic combustor utilizes radioactive heat with a high efficiency, has a radiation wavelength distribution rich in visible ray components, and is excellent in complete combustibility and visual confirmability even in a standby combustion condition. The present invention forms a thin film coat of metal or metal oxide which transmits rays having short wavelengths and reflects rays having long wavelengths on a surface of a transmission window disposed opposite to an upstream surface of a catalyst body. The catalyst body is composed of a metal wire structure having a high aperture ratio and is disposed in a combustion chamber. Furthermore, an auxiliary catalyst body which has a high aperture ratio and a small capacity is disposed in the vicinity of a mixed gas injection port at a location in contact with the mixed gas when the flow rate of the mixed gas is less than a predetermined value.

Abstract: According to a combustion apparatus comprising a mixing unit 3 for preparing a fuel-air mixture by mixing a fuel with combustion air, a first catalytic combustion chamber 4 incorporating a first catalyzer 7 for catalytically burning the mixture and a fin 5 for collecting a thermal energy generated by the catalytic combustion and a second catalytic combustion chamber 12 incorporating a second catalyzer 14 for catalytically burning the mixture that is not catalytically burnt by the first catalyzer 7, an operation of catalytic combustion at a high load can be achieved. An operation for improving characteristics of an exhaust discharged at the time of ignition can be also obtained, as a result, a combustion apparatus reduced in emission of NOx is provided.

Abstract: The present invention provides a catalytic combustion iron capable of further enhancing the stability of catalyst combustion.

Abstract: An exothermic apparatus uses heat generated by the combustion of gas fuel or liquid fuel. The exothermic apparatus comprises a mixing section in which fuel gas and air are mixed with each other; and a casing disposed downstream of the mixing section and accommodating a combustion chamber. A fin provided in the combustion chamber is substantially parallel with the flow direction of mixed gas. A catalyst layer is in close contact with an inner surface of the combustion chamber and an outer surface of the fin. In this manner, fuel gas is efficiently brought in contact with the surface of the catalyst layer and the temperature of the catalyst is prevented from fluctuating even though heating quantity in an exothermic section changes. Thus, catalytic combustion can be reliably accomplished in the compact combustion chamber.