| 摘要 |
<p>PURPOSE:To feed refrigerant gas together with lubricating oil to the circumferential faces of rotary valves so as to prevent gas leak and make the compressor compact by providing suction passages in rotary valves, and communicating compression chambers to oil feed passage inlets in order synchronizing with reciprocation of a double ended piston. CONSTITUTION:Rotary valves 27, 28 intercept a swash plate chamber 11 from discharge chambers 23, 24. Suction passages 29, 30 in the valves are communicated in order to compression chambers Pa, Pb, accompanying rotation of the valves. This communication is performed synchronizing with the sucking operation of a double ended piston 15A. Thus, cylinder blocks 1, 2 are provided with no suction passage, and the whole compressor can be formed compact. At discharge operation the gas in the compression chamber is discharged to the discharge chambers 23, 24 at being over the set pressure. The inlets of oil feed passages 41, 42 are communicated to the compression chamber during the set pressure. Consequently, a part of the gas in the compression chambers flows out through the oil feed passages 41, 42, and lubricating oil flowing with the gas is fed to the faces 27c, 28c of the valves by centrifugal action so as to improve sealing.</p> |
