| 摘要 |
PURPOSE:To prevent the titled device from accident caused by an abnormal heating by a method wherein an O ring for gas supply ON/OFF is perfectly made OFF at the abnormal heating, and the gas supply is stopped. CONSTITUTION:At abnormal heating, heat is conducted from a gas supply pipe 24 and an adjusting screw 23 to a fixing screw 25 formed by a low temperature soluble metal or thermosoftening resin. Consequently, the fixing screw 25 is started to be softened and fused, the adjusting screw 23 is simultaneously lifted up with an inner pipe 21 by the pulling force of a pulling coil spring 41, then removed from the screw part of the fixing screw 25. Therefore, the adjusting screw 23 is pushed up by a coil-shaped spring 14 of a valve 11 located at the other end part of the inner pipe 21, then an O ring 17 for gas supply ON/OFF fixed to the valve 11 is moved to the OFF side, the gas supply is made perfectly to be stopped condition. Thereby, the accident caused by the abnormal heating can be prevented. |
