| 摘要 |
<p>A gas compressor has a cylinder chamber (27) provided with discharge holes. Openings (37,38) are in communication with respective discharge holes. Discharge passages (40,41) having the same length are connected with respective openings (37,38). The ends of the discharge passages are connected with a common passage (49). During operation of the cylinder chamber (27), discharge valves cause the expelled gas to produce pulsations on the upstream side of the two openings (37,38). The pulsations are shifted in phase by a half wavelength. Noise due to the pulsations is reduced, because the pulsations of the expelled gas cancel out each other when the gas flows through the common passage (49). <IMAGE></p> |
