| 摘要 |
PURPOSE:To obtain rapid decrease of electromotive force at time of fire extinguishing by setting a cover with large heat capacity at a separated position where heat conduction reaches from the temperature contact a thermocouple. CONSTITUTION:A cover 122 of copper etc. with good heat conductivity is set at a fixed position of 5-10mm away from the temperature contact 121 of flame detection thermocouple 12 connected to a coil 14 of a sefety valve. The shape of a cover 12 may be made to have high cooling efficiency, or some cooling device may be attached. |
