Diffuser for centrifugal compressor
First Claim
1. A discharge region of a centrifugal compressor, comprising:
- a scroll casing which is asymmetrically formed in a circumferential direction and configured to be positioned in different angular positions in the circumferential direction;
a vaned diffuser configured to be positioned in different angular positions in the circumferential direction, the vaned diffuser including a plurality of guide elements configured to be arranged in a distributed manner in the circumferential direction; and
means for positioning the vaned diffuser with regard to an angular position of the asymmetrically formed scroll casing,wherein an angular spacing of two guide elements which are arranged adjacently to each other differs from an angular spacing of two other guide elements which are arranged adjacently to each other.
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Accused Products
Abstract
A discharge region of a centrifugal compressor is provided. A scroll casing is asymmetrically formed in a circumferential direction and configured to be positioned in different angular positions in the circumferential direction. A vaned diffuser is configured to be positioned in different angular positions in the circumferential direction. The vaned diffuser includes a plurality of guide elements configured to be arranged in a distributed manner in the circumferential direction. Means are provided for positioning the vaned diffuser with regard to an angular position of the asymmetrically formed scroll casing. An angular spacing of two guide elements which are arranged adjacently to each other differs from an angular spacing of two other guide elements which are arranged adjacently to each other. By varying the angular spacings between two adjacent guide vanes of a diffuser along the circumference, the resonance vibration of the compressor can be reduced.
38 Citations
20 Claims
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1. A discharge region of a centrifugal compressor, comprising:
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a scroll casing which is asymmetrically formed in a circumferential direction and configured to be positioned in different angular positions in the circumferential direction; a vaned diffuser configured to be positioned in different angular positions in the circumferential direction, the vaned diffuser including a plurality of guide elements configured to be arranged in a distributed manner in the circumferential direction; and means for positioning the vaned diffuser with regard to an angular position of the asymmetrically formed scroll casing, wherein an angular spacing of two guide elements which are arranged adjacently to each other differs from an angular spacing of two other guide elements which are arranged adjacently to each other. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification