| 摘要 |
<p>An interval between a discharge valve seat (49) and a discharge valve body (50) of a discharge check valve (52) provided in a discharge port (48) or compressed gas discharge paths (55, 56) adjacent to the discharge port of the mechanism of a compressor (2) is urged in a direction of increasing the interval therebetween by gravity or a spring. With this arrangement, even if the compressor is reversely rotated at a low speed during starting, a confined liquid is made to back-flow into an accumulator (46) disposed at the take-in side, with the discharge valve body (50) not closing the discharge valve seat (49), and temporarily stored therein, whereby the liquid in a space for compression and in a take-in path is removed, thereby facilitating the start of the rotation in the forward direction. At the time of the stop of the compressor after the forward rotation, the pressure difference across the valve body is large, whereby the discharge valve body (50) is moved to close the discharge valve seat (49) due to the pressure difference, thereby preventing the mechanism of the compressor from rotating in the reverse direction.</p> |
