| 摘要 |
PURPOSE:To enable fine and highly efficient pumping in such a way that pumping operation is done by means of a microcomputer using suction pressure and discharge pressure, or detecting signals of the number of revolution and pumping characteristic curves. CONSTITUTION:In a constant-speed or variable-speed turbo pump 1, pressure detectors 3, 4 are provided on the suction side and on the discharge side of the pump. Besides, in the variable-speed pump, further a revolving number detector 5 is provided for detecting the suction pressure, discharge pressue, and the number of revolution of the pump. By using their detecting signals and pumping characteristic curves, a microcomputer 6 finds the present value, upper limit value, lower limit value, value in the maximum efficiency point of the flow rate, and the present value, upper limit value, lower limit value, value in the maximum efficiency point of the discharge pressure, and computes those values. |
