| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide oil separation structure capable of being improved for the volumetric efficiency and fed for a uniform lubricating oil into each compression chamber in a compressor having a multiple cylinder piston compressing mechanism. <P>SOLUTION: An oil separator 38 separates lubricating oil out of discharged refrigerant gas. The oil separator 38 and each compressive chamber 26 are connected with an oil return passage without via an inlet pressure range. The oil return passage is provided with an upstream side passage 44 extended from the oil separator 38 and a plurality of inlet communicating passages 18 extended from each compression chamber 26, respectively. A rotor 35 for oil distribution is operationally connected to a rotating shaft 16 to rotate in synchronism with the rotation of the rotating shaft 16. The rotor 35 is provided with a distribution passage always communicated to the upstream side passage 44 to change the inlet communicating passages 18 connected to the passage one by one with rotation, and to distribute lubrication oil from the oil separator 38 into each compression chamber 26. <P>COPYRIGHT: (C)2004,JPO&NCIPI</p> |
