| 摘要 |
PURPOSE:To approach the pressure of gaseous body in a communicating pipe to the atmospheric pressure and permit to prevent generation of drain in the compressed gaseous body surely by a method wherein the suction port thereof is opened by moving a plunger and chocking it by a choking board by means of conducting or non-conducting of a solenoid. CONSTITUTION:In a condition in which a fear of generating drain in the communicating pipe 9 of high and low pressure side compression units 5, 6 is existing, the suction port 26, formed in a valve seat plate 24 above a cylinder 21, is choked by the choking board 46 provided at the tip end thereof by conducting the solenoid 41 provided at the upper part of the valve seat plate 24 and moving the plunger 44, therefore, the pressure of gaseous body, flowing in the communicating pipe 9, may be approached to a pressure near the atmospheric pressure. According to this method, generation of drain, produced by the compression of moisture in the compressed gaseous body supplied to the high-pressure side compression unit 6, may be prevented surely and generation of rusting of respective parts of the compressor as well as lowering of lubricating property due to mixing of the drain within lubricating oil may be prevented. |
