| 摘要 |
PURPOSE:To stabilize combustion as well as ensure to put it out by a structure wherein a valve, which controls gas flow in response to the change of gas pressure, and a valve to close and open the outlet of said valve are provided between a liquefied petroleum gas tank and a torch mixer. CONSTITUTION:A liquefied petroleum gas tank 11 is connected through a first and a second valves 12 and 13 to a primary vaporizing chamber 14 and then connected through a filter 15 and a conduit 16 to a secondary vaporizing chamber 17. The secondary vaporizing chamber 17 is formed at the inceptive end of the torch mixer 18, at the other end of which a nozzle 21 is provided. The first valve 12 controls gas flow rate by controlling a male screw 23 in order to change the contact pressure between an O-ring 24 and a disc 25. Furthermore, the second valve 13 controls gas flow rate by opening and closing the outlet 26 of the first valve 12 by means of a needle 31 equipped with a turning knob. Owing to the structure as described above, the abrupt change of gas pressure is controlled by the first valve 12 in order to stabilize flame, and when out of use, the second valve 13 quickly shuts-off the gas supply. |
