Displacement machine based on the spiral principle
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United States of America Patent
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Jun 17, 2003
Grant Date -
N/A
app pub date -
Feb 2, 2001
filing date -
Feb 18, 1999
priority date (Note) -
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Abstract
A displacement machine for compressible media has two spiral feed chambers (11a, 11b) which are arranged opposite each other in a fixed housing (7a, 7b). Spiral displacement bodies (2-4) engage in these feed chambers. Said displacement bodies essentially consist of a disk (2) and spiral strips (3a, 3b) which are attached to each side of the disk. The strips are held in an eccentric manner in relation to the housing, so that during operation each point on the displacement body executes a circular or elliptical movement, depending on the configuration of the guiding device (49), said movement being limited by the cylinder walls of the feed chamber. One feed chamber (11a) is configured for compressing the working substance and the other feed chamber (11b) for expanding said working substance. The feed chambers and the strips (3a, 3b) which engage in said chambers consist of successive circular arc segments. The radii of the circular arc segments in the compression-side feed chambers (11a) decrease in size, when viewed in a direction of rotation. The radii of the circular arc segments in the expansion-side feed chambers (11b) increase in size, when viewed in the same direction of rotation.
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