| 摘要 |
PURPOSE:To prevent a trouble at restarting of a compressor, by opening pressure of supply oil with a delay relay when operation of the compressor is stopped and placing the compressor in its restart condition with a minimum load. CONSTITUTION:Pressure rises simultaneously with operation and high pressure oil is applied to the right side of a hydraulic piston 8 through a throttle valve 12. Here solenoid valves 11, 13 are closed, and the piston 8 is pressed leftward by oil pressure to obtain maximum capacity. At stopping of a compressor, the valve 11 is controlled to open for a prescribed time. In this way, supplied oil to the piston 8 is all drained to a low pressure side, and a minimum capacity condition is automatically set, then a trouble at restarting can be prevented beforehand. |
