| 摘要 |
PROBLEM TO BE SOLVED: To provide a dust detector capable of accurately detecting the dust filter clogging. SOLUTION: Air, from which dust is removed by a dust filter 10, is taken into a housing 30 by a cooling fan 20 and discharged from an exhaust port 70 while cooling the housing 30. Pressure sensors 40a, 40b attached to the inside and outside of the housing 30 through the exhaust port 70 detect pressure in predetermined timing to output electric signals corresponding to the detected pressure values to a processing part 50. The processing part 50 operates the difference between the values outputted from the sensors 40a, 40b and the clogging of the dust filter 10 is judged when the difference is less than a predetermined value. |
