| 摘要 |
A cleaning apparatus has a compressor ( 12 ), an electromagnetic valve ( 33 ) connected to the compressor ( 12 ), and first to third timers ( 27 to 29 ). The first timer ( 27 ) sets an open/close time and a close time for repeatedly opening and closing an electromagnetic valve ( 33 ). The second timer ( 28 ) sets a time for feeding compressed air into a pipe ( 35 ). The third timer ( 29 ) stops the operation of the second timer ( 28 ) until an activation inhibition time elapses from a point at which the pressure of the compressed air has reached a predetermined upper limit, and further permits the operation of the second timer ( 28 ) after the activation inhibition time elapses.
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