| 摘要 |
<p>PURPOSE:To feed lubricating oil onto the peripheral surfaces of valves to prevent gas leak and make the compressor compact by providing a dicharge passage in a rotary shaft to communicate front and rear discharge chambers to each other, and providing through holes to feed lubricating oil to the slidably contacting surfaces of the rotary valves on the discharge passage of the rotary shaft. CONSTITUTION:Refrigerant gas discharged to one of front and rear discharge chambers 23, 24 flows into the other discharge chamber through the discharge passage 37 in a rotary shaft 7. Rotary valves 27, 28 intercept a swash plate chamber 11 from the discharge territories, and lubricating oil together with refrigerant gas are fed to the slidably contacting circumferential faces of the valves 27, 28 through the passage 37 and oil supply holes 7c. The suction passages 29, 30 in the valves are in order communicated to compression chambers Pa, Pb accompanying rotation. This communication is performed synchronizing with the sucking operation of a double ended piston 15A, and the refrigerant gas of the suction passages 29, 30 flow into the compression chambers. Thus, by providing no suction passage in cylinder blocks 1, 2, the arranging radius of the cylinder bore can be contracted and the whole compressor can be made compact.</p> |
