| 摘要 |
PURPOSE:To stabilize the detecting operation by connecting the detector to the power source for driving a blower while the output relay is allowed to be energized when the temperature of a heat generating element to be cooled by air of the blower exceeds a specified value. CONSTITUTION:A suspended air detection unit 3 is made up of a thermosensitive element 37 with a variable resistor 38 for adjusting working point and a heat generating element 36. The element 36 is connected in parallel to the power source 2 for driving a blower 1 while being cooled by air of the blower 1 and the element 37 energizes an output relay 6 at the temperature above the working point set by the resistor 38 to enable the display of the suspended air state. The unit 3 thus electrically constructed prevents misdetection due to chattering while enabling miniaturization. |
