| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To enhance durability and life by suppressing wearing and thermal deformation of a seal member by limiting a continuous operation time to a predetermined set time. <P>SOLUTION: Operation and stopping of an electric motor 5 are controlled by a signal from a controller 7 such that a pressure in a storage tank 2 becomes within a range of a lower limit pressure P1 and an upper limit pressure P2 by a pressure P detected by a pressure sensor 6. On the midway when such pressure control of a compressor body 11 is performed, when the continuous operation time of the compressor body 11 by the electric motor 5 exceeds a set time Ts, even before the pressure P reaches to the upper limit pressure P2, the electric motor 5 (operation of the compressor body 11) is temporarily stopped by time control. Further, when compression operation by the electric motor 5 is stopped, the electric motor 5 (compressor body 11) is continued to be stopped until a predetermined stand-by time Tw is passed. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
