| 摘要 |
<p>PROBLEM TO BE SOLVED: To prevent a reduction in the performance of a compressor caused by the flowing of coolant gas inside a coolant gas discharge chamber into a crank chamber by surely preventing the flowing of the coolant gas inside the coolant discharge chamber together with lubricating oil through a return passage into the crank chamber even when the compressor is miniaturized and a cylinder block is made thin. SOLUTION: This compressor is constructed in such a manner that a coolant discharge chamber 8 for discharging coolant gas containing lubricating oil compressed by a piston 27, and a crank chamber 4 housing a piston sliding mechanism 20 for sliding the piston 27 communicate to a cylinder block 3 having a cylinder bore 2 having the piston 27 fixed to freely slide. A return passage 40 is spirally formed to return lubricating oil remaining in the coolant discharge chamber to the crank chamber 4.</p> |
