Scroll-type compressor with thrust bearing lubricating and bypas

Details Scroll-type compressor with thrust bearing lubricating and bypas Scroll-type compressor with thrust bearing lubricating and bypas

1979-08-29

1982-02-09

Vrablik, John J.

Pumps

With condition responsive pumped fluid control

Driven pump part speed responsive

417310, 418 55, 418 57, 418 94, 418DIG1, F04C 1802, F04C 2900, F04C 2902, F04B 4902

Patent

active

043147968

ABSTRACT:
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.

REFERENCES:
patent: 450234 (1891-04-01), Johnson
patent: 3924977 (1975-12-01), McCullough
patent: 4005948 (1977-02-01), Hiraga et al.
patent: 4082484 (1978-04-01), McCullough

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