Scroll compressor
AssigneeEdwards Limited
InventorsIan David Stones, Alan Ernest Kinnaird Holbrook
Life of this patent
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Abstract
The present invention relates to a scroll compressor comprising a scroll pumping arrangement comprising two scrolls each having a scroll wall with inner and outer scroll wall surfaces which co-operate with respective outer and inner scroll wall surfaces of the other scroll wall providing two pairs of co-operating surfaces which, on relative orbiting motion of the scrolls, pump fluid from an inlet to an outlet of the arrangement, the scroll walls having a respective plurality of wraps I, II, III, IV, V between the inlet and the outlet and wherein the co-operating scroll wall surfaces of one of said pairs of at least one wrap are generally circular.
Claims20
A scroll compressor comprising:
- a scroll pumping arrangement comprising two scrolls, each scroll of the two scrolls including a respective scroll wall including a respective inner scroll wall surface and a respective outer scroll wall surface which co-operate with respective outer and inner scroll wall surfaces of the other scroll wall providing two pairs of co-operating scroll wall surfaces which, on relative orbiting motion of the scrolls, pump fluid from an inlet to an outlet of the arrangement, wherein each scroll wall of the respective scroll walls includes a respective plurality of wraps between the inlet and the outlet, and wherein the co-operating scroll wall surfaces of one pair of the two pairs of co-operating scroll wall surfaces of at least one wrap are generally circular.
A scroll compressor comprising:
- a scroll pumping arrangement comprising two scrolls each respective scroll of the two scrolls including a respective scroll wall including a respective inner scroll wall surface and a respective outer scroll wall surface which co-operate with respective outer and inner scroll wall surfaces of the other respective scroll wall providing two pairs of co-operating surfaces which, on relative orbiting motion of the two scrolls, pump fluid from an inlet to an outlet of the scroll pumping arrangement, wherein the respective scroll walls each includes a respective plurality of wraps between the inlet and the outlet and wherein the co-operating scroll wall surfaces of one pair of the two pairs of co-operating surfaces of at least one wrap have a rate of change of radius with respect to the angle which is less than the rate of change of the other wraps so that the compression ratio of the one pair of the two pairs of co-operating surfaces is less than for the other wraps.
Dependencies are inferred from the claim text.