Weed killing burner has evacuation pipe connected to burner head by return loop path for gases

摘要

The weed killing burner has a burner head (15) with a hood (9) in which the head is mounted. The top and side walls of the housing are gas sealed. A discharge pipe (11) for the gases opens into the hood through the top wall. A return loop (16) in the hood defines a path connecting the burner head to the pipe along the base of the hood.