BURNER DEVICE HAVING FLAME SHAPE SWITCHING MEANS

摘要

PROBLEM TO BE SOLVED: To form a diffusion flame by a sub-channel provided as a pilot by switching a channel by a simple means even in a burner device having only a concentrated flame of the flame shape from a main channel. SOLUTION: A mixing means 7 of liquefied gas and combustion air is connected to a fuel tank at an upper part of a grip used also as the tank. A nozzle member 15 having a main channel 18 of a short tube-like nozzle tip 15c and its peripheral annular sub-channel 19 and a combustion nozzle 5 having an electrode 17 of a nozzle member side are mounted on an end of the means 7. Threads are formed on an inner periphery of the chip 15c for forming the channel 18. A threaded screw engaged with the threads is provided as a flame shape converting member 20 for switching the channel to the sub-channel 19 by blocking the channel 18.