| 摘要 |
PURPOSE:To reduce an electric power loss by a method wherein the output shaft is rotated in accordance with an air pressure in a pipeline supplying a load, in the discharge pressure control system for the compressor. CONSTITUTION:When the amount of the load is increased and the air pressure in the pipeline 2 becomes lower than a set pressure, the output shaft 4 is rotated into the side of increasing. When a switch 6d is energized, the opening condition of an unloader 7 is released and compressed air is discharged out of the compressor 1b also, thus, the air pressure in the pipeline 2 is controlled so as to approach the set pressure. Further, when the pressure lower than the set pressure is continued a it is, the output shaft 4 is rotated into the side of increasing further and the switch 6c is energized, thereafter, the operations same as above are repeated. |
