Rotary expansible chamber devices – Working member has planetary or planetating movement – Helical working member – e.g. – scroll
Patent
1992-05-13
1993-08-03
Vrablik, John J.
Rotary expansible chamber devices
Working member has planetary or planetating movement
Helical working member, e.g., scroll
418 554, 418 556, 418 88, 418141, 418188, F04C 1804, F04C 2700, F04C 2902
Patent
active
052323552
ABSTRACT:
A scroll-type fluid apparatus includes a housing whose interior is divided by upper and lower partitioning walls into chambers one over another, i.e., a discharge chamber communicating with a discharge port, an inlet chamber communicating with an inlet port and a drive chamber accommodating therein a motor. A first scroll member is disposed in the inlet chamber and has a lower surface formed integral with a first spiral scroll vane. A second scroll member is disposed in the inlet chamber at a location below the first scroll member and has a lower surface provided with a rotatable shaft which is rotatably supported in the lower partitioning wall. The second scroll member is integrally provided on an upper surface thereof with a second spiral scroll vane which is in mesh with the first scroll vane to form a plurality of variable-volume chambers. An oil pump is provided in the discharge chamber for supplying lubricant to contacting parts of the first and second scroll members. The rotatable shaft of the second scroll member is provided on the outer periphery thereof with a labyrinth seal and at least one annular oil seal for preventing leakage of lubricating oil and vacuum from the inlet chamber toward the drive chamber.
REFERENCES:
patent: 3369740 (1968-02-01), Abermeth
patent: 4743181 (1988-05-01), Murayama et al.
patent: 4973232 (1990-11-01), Etou et al.
patent: 5131828 (1992-07-01), Richardson, Jr. et al.
Fujii Kozaburo
Yamasaki Yutaka
Mitsubishi Denki K.K.
Vrablik John J.
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