Rotary expansible chamber devices – Working member has planetary or planetating movement – Helical working member – e.g. – scroll
Patent
1990-05-29
1991-03-05
Vrablik, John J.
Rotary expansible chamber devices
Working member has planetary or planetating movement
Helical working member, e.g., scroll
F04C 1804
Patent
active
049973487
ABSTRACT:
In a displacement machine for compressible media, having a delivery space (6) which is delimited by spiral-shaped peripheral walls (8, 9) extending perpendicularly from a side wall and leads from an inlet (2) outside the spiral to an outlet (3) inside the spiral, and having a spiral-shaped displacement body (5) which projects into the delivery space (6) and is mounted with respect to the delivery space so as to execute a rotary, twist-free movement, the center (10) of said displacement body is offset eccentrically relative to the center (11) of the peripheral walls (8, 9) in such a way that the displacement body (5) at all times almost touches both the outer and the inner peripheral wall (9 and 8 respectively) of the delivery space (6) at in each case at least one advancing sealing line. The sealing line at the inlet-side end of the outer peripheral wall (9) is advanced relative to the 0.degree./360.degree. position by an angle (.alpha.) between 5.degree. and 50.degree., the peripheral wall (9) forming a circular arc (9') in this angle region.
Kolb Roland
Spinnler Fritz
BBC Brown Boveri AG
Vrablik John J.
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