A CONVERTING DEVICE FOR CONVERTING FUEL GAS TO HEAT AND A GAS POWERED HEATING DEVICE

摘要

A soldering iron (1) comprises a handle (2) and a soldering tip (3) secured to the handle (2) by a gas supply pipe (4). Fuel gas in a reservoir in the handle (2) is supplied to a combustion chamber (14) located in the soldering tip (3) through the supply pipe (4). A catalytic combustion element (30) comprising a perforated sheet metal carrier (31) having first and second major surfaces (33,34) coated with a catalytic composition is located in the combustion chamber (14). First protuberances (38) extending from the first major surface (33) space portions of the catalytic combustion element from a side wall (15) of the combustion chamber (14) for facilitating passage of fuel gas between the catalytic combustion element (30) and the side wall (15). A tubular resilient retaining member (40) located in the combustion chamber (14) retains the catalytic combustion element (30) in the combustion chamber (14) with the first protuberances (38) abutting the side wall (15). Second protuberances (45) from a first major surface (43) of the retaining member (40) engage the catalytic combustion element (30) for spacing the retaining member (40) therefrom for facilitating passage of fuel gas between the retaining member (40) and the catalytic combustion element (30).