| 摘要 |
<p>PURPOSE:To provide a less amount of filling of the lubricating oil only required for a compressor of big capacity, by such constitution that, a lubricating oil, flowing out into cooling circuit through pressure balance path, be removed from the cooling circuit to return to a crank chamber or oil sump. CONSTITUTION:A lubricating oil, stored in a crank case 13, is raked up by the rotation of a rotor 14, moving on the inner wall surfaces of the crank case 13 in a manner of making a layer, and flowing out into an intake room 32 through a pressure balance path 40. And in a condition as included in fine amount of refrigerant is passes the clearnace between a cylinder 26 and a piston 27 during a compression stroke of the piston 27 to ruturn to the crank case 13, with other amount pushed out to a delivery room 33 in a condition as included in the refrigerant. The refrigerant gas, including the lubricating oil delivered thus to the delivery room 33, collides against inner circumferential wall face of a partition 43, with most of the lubricating oil sticking to the wall faces to be guided to an oil guide groove 56, and becoming to be accumulated in an oil sump 57 through an oil collector room 53.</p> |
