Displacement machine having a housing and piston with spiral wal

Details Displacement machine having a housing and piston with spiral wal Displacement machine having a housing and piston with spiral wal

1985-03-01

1986-08-05

Vrablik, John J.

Rotary expansible chamber devices

Working member has planetary or planetating movement

Helical working member, e.g., scroll

F01C 104, F01C 1900

Patent

active

046040404

ABSTRACT:
A displacement machine for a fluid comprising a housing including a spiral wall containing a displacement body including a spiral wall engaged with the spiral wall of the housing to form chambers therewith. The spiral wall of the displacement body extends over an angle greater than 360.degree. to provide overlapping first and second ends and the spiral wall extends axially on both sides of a transverse disc. The center of the displacement body is rotated around a closed circular path, and a crank arm is pivotably connected to the housing at a first pivot axis and to the displacement body at a second pivot axis in the region of the spiral wall of the displacement body. The transverse disc has a radial terminal edge extending between the overlapping first and second ends of the spiral wall of the displacement body. The disc travels in a slot in the spiral wall of the housing and the terminal edge is shaped in correspondence with the path of movement of the disc relative to the housing so that the distance between the terminal edge and the edge of the slot remains substantially constant at least during one-half of the travel of the displacement body along the closed circular path.

REFERENCES:
patent: 3560119 (1971-02-01), Busch et al.

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