Gaseous fuel heating unit

摘要

A heater unit (1) which can be supplied with any type of gaseous fuel such as methane, LPG, town gas, etc., is described. The unit (1) comprises a first jacket (2) which defines the heating region (V) and a second jacket (3) disposed outside the first jacket (2) and defining a space (4) relative to the first jacket (2). Combustion means (6), preferably constituted by one or more sets of combustion heads (8) supplied with gaseous fuel, generate a flow of heating aeriforms directed towards the said space (4) so as to bring about heating of the heating region (V) defined by the first jacket (2). The heating flame never comes directly into contact with the heating region (V) or with the outside atmosphere, ensuring optimal uniformity of heating temperature and a high level of safety. The preferred application is for heating ducts through which a material to be heated flows, for example, with a view to bringing about melting.