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US 6,607,353 B2Granted
Centrifugal compressor
AssigneeMitsubishi Heavy Industries, Ltd.
InventorJoo Masutani
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AssigneeMitsubishi Heavy Industries, Ltd.
InventorJoo Masutani
Estimating the term…
The centrifugal compressor of the present invention is equipped with a plurality of vane groups (A, B) comprised of a plurality of vanes (16A, 16B) disposed in the peripheral direction of an impeller (12) so as to be concentric about the center of an axis of rotation (15) of the impeller, and the individual vanes (16A) belonging to vane group (A) nearest to the impeller are able to rotate. Since diffuser efficiency decreases if the intake flow volume of the impeller changes and the flow of gas is unable to easily continue from the vanes (16A) to vanes (16B), the vanes (16A) are rotated to change the inclination of the direction of a wing center line on their front edges so as to coincide with the direction of the flow of gas discharged from the impeller. As a result, diffuser efficiency is maintained at a high level even if the intake flow volume of the impeller is changed.
A centrifugal compressor having a diffuser around an impeller, wherein said diffuser is equipped with a plurality of vane groups comprised of a plurality of vanes disposed in a peripheral direction of said impeller so as to be concentric about an axis of rotation of said impeller, and wherein the further a first vane group of the plurality of vane groups is positioned from the axis of rotation as compared to another vane group of the plurality of vane groups, the smaller an angle relative to a radial direction of said impeller of a vane of the first vane group as compared to an angle relative to the radial direction of a vane of the another vane group.
A centrifugal compressor comprising:
Dependencies are inferred from the claim text.