| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a gas compressor control system capable of additionally installing tanks or others with compressed gas used. <P>SOLUTION: The air compressor 1 is constituted of four compressors 2A to 2D individually supplying compressed air to the tank 8. Further, a pressure sensor 13 and a temperature sensor 14 are installed in the tank 8 and are connected to control circuits 7A to 7D of the compressors 2A to 2D. The control circuits 7A to 7D calculate consumed air quantity and equivalent tank capacity Vall using a pressure reducing time toff when the compressors 2A to 2D stop when the pressure P lowers from the upper limit value Pmax to the lower limit value Pmin and a pressure increasing time ton when the compressors 2A to 2D are operated when the pressure P is raised from the lower limit value Pmin to the upper limit value Pmax. Further, the control circuit 7A to 7D lower the upper limit value Pmax according to the consumed air quantity No and the tank capacity Vall. <P>COPYRIGHT: (C)2012,JPO&INPIT |
