| 摘要 |
<p>A discharge nozzle for a gas cigarette lighter comprises an outer sleeve (1) defining a gas flow passage (6) and a coaxial gas ejecting passage (8). Received within the gas ejecting passage (8) is a gas dispersing element (9) which has an inner central smooth bore (10) and an outer threaded surface (11). Both the inner passage, constituted by the bore (10) and the outer passage (12), defined by the threaded surface (11) of the gas dispersing element (9) and the inner surface of the sleeve communicate with the gas flow passage (6). When gas is discharged from the nozzle a proportion of the gas flows around the outer passage (12) and is induced to describe a spiralling motion such that as it exits the gas is dispersed outwardly into the vicinity of a spark created by a piezo-electric sparking device. At the same time the remainder of the gas is discharged through the inner passage. The gas is ignited more easily as the outwardly moving gas reaches the vicinity of the spark and the central jet maintains a stable flame once ignition has occurred.</p> |
