CATALYTIC COMBUSTOR

摘要

For obtaining a catalytic combustor which utilizes radioactive heat with a high efficiency or economically, 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 at a low combustion rate, the present invention forms a thin film coat of a metal or a metal oxide which transmits rays having short wavelengths and reflects rays having long wavelengths on a surface of a transmission window opposed to an upstream surface of a catalyst body. Further, a metal catalyst body composed of a metal wire structure having a high aperture ratio is disposed in a combustion chamber which comprises a catalyst body in a downstream region and a heat ray transmissive body disposed on a side wall thereof so that one end of the metal catalyst body is disposed in the vicinity of the catalyst and the other end is directed upstream. 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 which is brought into contact with flow lines when an amount of the mixed gas is not larger than a definite value. Moreover, a freely openable/closable cover having reflectivity to heat rays is disposed in the vicinity of an outside surface of the transmission window. In addition, an air flow path is formed between the transmission window and a second transmission window, and a thin film coat which reflects radioactive heat rays having long wavelengths is disposed on an inside surface of the second transmission window.