| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a compressor unit capable of feeding bearing oil while reducing oil spillover to an intake chamber. <P>SOLUTION: At a rear end side from a bearing 15 out of a center through-opening 14, a seal member 71 is provided for sealing a clearance between the center through-opening 14 and a drive shaft 10, thereby the center through-opening 14 is partitioned into a first chamber 14a for communicating with a crank chamber 5, and a second chamber 14c isolated from the crank chamber 5. There formed is a bleed air passageway 56 configured to include the second chamber 14c of the center through-opening, an upstream side communicating conduit 60 formed to penetrate within the drive shaft 10 so as to communicate between the second chamber 14c and the crank chamber 5, and a downstream communicating conduit 58 for communicating between the second chamber 14c and the intake chamber 7. A communicating hole 73 for communicating between the portion for accommodating the bearing 15 of the first chamber 14a of the center through-opening, and a near bottom dead point of a piston 29 of a cylinder bore 3 is formed to penetrate within a cylinder block 2. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
