Lubricating oil supply device for van compressors

Details Lubricating oil supply device for van compressors Lubricating oil supply device for van compressors

1990-02-07

1991-09-17

Nilson, Robert G.

Pumps

With condition responsive pumped fluid control

Inlet throttle or stop valve

418 86, 418100, F04C 2902, F04B 4900

Patent

active

050490419

ABSTRACT:
A vane compressor has at least one compression space defined between a rotor and a cylinder. A shaft seal and a bearing are fitted on a driving shaft and disposed adjacent to each other. A lubricating oil supply device supplies compression medium to the shaft seal and the bearing, through at least one passage extending between the at least one compression space and the shaft seal and the bearing. The at least one passage has an open end opening into the at least one compression space at a predetermined circumferential location at which pressure within the at least one compression space changes from a negative value into a positive value when each of the vanes passes the predetermined circumferential location, whereby lubrication and cooling of the shaft seal and the bearing is effected in an efficient manner.

REFERENCES:
patent: 4834634 (1989-05-01), Ono

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