| 摘要 |
PURPOSE:To prevent the oxigen in a room from being depleted by extinguishing the burner and stopping the operation at a certain time from an operation startup by providing a timer device that stops the operation at the certain elapsed time and multiple illuminators to indicate the operation time, and forming a push button for a reset switch with translucent material behind which an illuminator is disposed. CONSTITUTION:A timer device 17 is energized upon turning ON the power source switch 12, and all illuminators 20, 20... are turned ON upon its operation startup. When approximately 3hr has elapsed from the operation startup, the timer device 17 causes all the 3 illuminators 20, 20... to intermittently illuminate to inform users of an impending operation stoppage. About 1-3min from the intermittent operation of the illuminators 20, 20..., the timer device 17 causes a normally closed switch 18 to be opened to interrupt the current to a main controller 14, and then, the burner is extinguished and a hot air blower is stopped at the same time. |
