Rotary expansible chamber devices – With mechanical sealing – Seal element between working member and cylinder
Patent
1979-03-05
1980-11-11
Goldstein, Herbert
Rotary expansible chamber devices
With mechanical sealing
Seal element between working member and cylinder
418 61B, F01C 1900, F04C 1810
Patent
active
042330041
ABSTRACT:
An eccentric-rotor machine includes a housing having a longitudinal axis and defining a plurality of work chambers; radial housing walls bounding the work chambers; a multi-lobe rotor arranged in the housing for orbital motion therein to sequentially and cyclically vary the volume of each chamber in the execution of inward strokes and outward strokes. The rotor has opposite radial rotor walls each defining a clearance with an adjacent respective radial housing wall; and a sealing ring of circular course arranged in the clearance for sealing the work chambers. The sealing ring is concentric to the housing axis and has a diameter so dimensioned that in each chamber a length portion of the sealing ring is situated externally of the outline of the rotor when the volume of the respective chamber is at a maximum. Thus, in each chamber, a length portion of the sealing ring is out of contact with the respective radial rotor wall only during a terminal phase of the outward strokes (such as intake strokes) and a beginning phase of the inward strokes (such as compression strokes) of the rotor.
REFERENCES:
patent: 3193186 (1965-07-01), Peras
patent: 3883276 (1975-05-01), Hofbauer
Goldstein Herbert
Volkswagenwerk Aktiengesellschaft
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