Scroll compressor with lubrication of seals in back pressure cha

Rotary expansible chamber devices – Working member has planetary or planetating movement – Helical working member – e.g. – scroll

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Details

418 554, 418 556, 418 551, 418 57, 418 99, F04C 1800

Patent

active

061494135

ABSTRACT:
A scroll compressor lubrication system includes a number of embodiments where lubricating oil impinges off surfaces adjacent to the orbiting scroll. The impinged oil creates a lubrication mist, which is deposited on the back surface of the orbiting scroll baseplate. The surface of the orbiting scroll onto which the oil has been deposited rubs against and carries the oil to the back chamber seals and to the back chamber. The seals thus are being lubricated by oil transfer from the back surface of the orbiting scroll to the seals. Sine the oil is deposited on the surface of the orbiting scroll, while it is exposed to suction pressure, only minimal pressurization of oil is required. Thus, there is no damage to the back pressure chamber seals due to over pressurization.

REFERENCES:
patent: 4552518 (1985-11-01), Utter
patent: 4596521 (1986-06-01), Murayama et al.
patent: 5040956 (1991-08-01), Barito et al.
patent: 5212964 (1993-05-01), Utter et al.
patent: 5370513 (1994-12-01), Fain
patent: 5449279 (1995-09-01), Hill et al.

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