| 摘要 |
<p>A scroll-type refrigerant compressor unit is assembled by inserting parts into the compressor housing in a predetermined order and by finally securing a front end plate onto the compressor housing by bolts, which simplifies the production of the compressor unit. A drive shaft is supported by a single radial bearing, and a disk rotor having a drive pin to effect the orbital motion of the orbiting scroll member is fixedly mounted on the inner end of the drive shaft and is supported on the front end plate by a thrust bearing. Thus, the drive shaft and, therefore, the compressor unit are reduced in length and deflections and vibrations of the drive shaft are prevented. A lubricating system is provided to lubricate the shaft seal assembly on the drive shaft wherein the oil in the compressor housing is directed to the shaft seal cavity and returns to the interior of the compressor housing after lubricating the radial and thrust bearings and other parts. A mechanism for automatically reducing the amount of fluid compressed during high speed operation of the compressor unit is provided.</p> |
