Seal arrangement for engine-driven supercharger

Details Seal arrangement for engine-driven supercharger Seal arrangement for engine-driven supercharger

1997-07-10

1998-11-17

Vrablik, John J.

Rotary expansible chamber devices

Heat exchange or non-working fluid lubricating or sealing

Vent or non-seal means prevents working and non-working...

418104, F04C 2700

Patent

active

058367535

ABSTRACT:
A seal arrangement for an engine-driven supercharger to prevent burning and abnormal wear of an rubber-made oil seal fitted on a shaft of a rotor of the supercharger. The supercharger includes a housing, a rotor chamber is formed in the housing and the rotor is rotatably placed in the rotor chamber. A shaft chamber is formed next to the rotor chamber. The rotor shaft projects from the rotor chamber into the shaft chamber in a longitudinal direction of the rotor. A bearing is provided inside the shaft chamber for supporting the rotor shaft at a free end of the rotor shaft. A lubrication oil is fed to the bearing. The supercharger sucks external air into the rotor chamber by making the rotor chamber pressure negative and rotates the rotor for compressing the air in the rotor chamber. The oil seal is fitted on the rotor shaft between the bearing and the rotor chamber for defining an oil chamber in the shaft chamber between the oil seal and the bearing. An air chamber is defined in the shaft chamber between the oil seal and the rotor chamber. An air passage extends from the air chamber to the outside so that positive or negative pressure of the air leaking to the air chamber from the rotor chamber is lowered or raised when the air enters the air chamber which communicates with the outside via the first air passage.

REFERENCES:
patent: 4153395 (1979-05-01), O'Neill
patent: 4594992 (1986-06-01), Nakamura et al.
patent: 4709682 (1987-12-01), Kato
patent: 4755115 (1988-07-01), Akaike
patent: 5348456 (1994-09-01), Kun et al.
patent: 5385351 (1995-01-01), White
patent: 5490771 (1996-02-01), Wehber et al.

Affiliated with

Also associated with

Rating

Seal arrangement for engine-driven supercharger does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Seal arrangement for engine-driven supercharger, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Seal arrangement for engine-driven supercharger will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-878354