Compressor with dual pathways for returning lubricating oil

Details Compressor with dual pathways for returning lubricating oil Compressor with dual pathways for returning lubricating oil

2006-12-27

2010-06-08

Trieu, Theresa (Department: 3748)

Rotary expansible chamber devices

Working member has planetary or planetating movement

Helical working member, e.g., scroll

C418S055100, C418S097000, C418S270000, C418SDIG001, C055S394000, C055S396000, C055S423000

Reexamination Certificate

active

07731486

ABSTRACT:
This invention provides a compressor that can efficiently return lubricating oil through an oil storage chamber to a lubrication target site without residence of the lubricating oil within the discharge chamber and can prevent deterioration in lubrication performance. The compressor comprises a housing having a discharge chamber for lubricating oil-containing hydraulic fluid and a discharge port communicating with the discharge chamber, a rotational shaft extended into the housing, a compression unit for the suction, compression and discharge of the hydraulic fluid through the drive of the rotational shaft, and a lubricating oil separator comprising a separation chamber and an oil storage chamber. The separation chamber is provided between the discharge chamber and the discharge port in the housing. The oil storage chamber is located below the separation chamber. Lubricating oil separated from the hydraulic fluid in the separation chamber is introduced through an oil hole is stored in the oil storage chamber. The compressor further comprises a communication section for directly communicating the discharge chamber and the oil storage chamber without through the separation chamber.

REFERENCES:
patent: 3676024 (1972-07-01), Akaiki
patent: 4470778 (1984-09-01), Mabe
patent: 6152713 (2000-11-01), Hisanaga et al.
patent: 6227831 (2001-05-01), Osima et al.
patent: 2005/0226756 (2005-10-01), Ito
patent: 62126282 (1987-06-01), None
patent: H11-082352 (1999-03-01), None

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