| 摘要 |
<p>A gas burner has a first gas supply pipe (21) feeding an outer gas outlet member (33) and a second gas supply pipe (22) feeding an inner gas outlet member (34). Between the supply pipe (21) and the outlet member (33) there are three gas delivery pipes (36). These pipes are adjustable in length and are fed by nozzles (25). Air enters into the pipes from around the nozzles. Between the supply pipe (22) and the outlet member (34) there is a single gas delivery pipe (37), also adjustable in length and fed by a nozzle. By having the pipes adjustable in length the burner can be readily adapted for use with different gases ie. liquiefied petroleum gas, natural gas and city gas. <IMAGE></p> |
