| 摘要 |
<p>Regulating device with starting and stopping device for screw-type compressors which contain a compressor element (1), an electrical motor (2) to drive this compressor element (1), a minimum pressure valve (4) which is mounted on the outlet (5) of the compressor element (1) and a vessel (6) which is mounted between the compressor element (1) and the minimum pressure valve (4), which regulating device contains means (9) to control the motor (2), characterized in that the means (9) to control the motor (2) are means to make said motor (2) turn at a frequency-regulated rotational speed at an almost constant pressure in the vessel (6), and in that the starting and stopping device contains a non-return valve (12) which is mounted on the inlet (10) of the compressor element (1). <IMAGE></p> |
