Abstract: An injector (12) for sucking in environmental air and for injection into the combustion chamber (12) of a torch burner (11) by means of a driving fluid (14) standing under excess pressure, has an air induction opening (15), a flow channel (16) and injection openings (17) through which the driving fluid (14) is blown into a mixing region (19) where it mixes with induced air. The flow channel (16) has a diffusor region (18) ajoining the mixing region (19) in the flow direction and has an outlet opening (20) for the mixture of air and driving fluid. In accordance with the invention, injection openings (17) open into a dead flow space (22) from which spray jets (23) are directed into the mixing region (19).