| 摘要 |
Radiant tube space heating appliance includes a burner assembly (12), air flow therethrough being induced by a fan (14) by way of a restricted air inlet orifice (34) communicating with a stabilising chamber (32) leading to the burner head (26) for smoothing and 20 silencing the air flow; the burner head including a flame stabilising matrix (40), conveniently formed from windings of flat and corrugated stainless strips which define through apertures of substantial axial length. A vacuum sensor detects the degree of depression within an airfeed, to monitor the air flow through the heater duct. <IMAGE> |
