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US 5,228,832 AGranted
Mixed flow compressor
AssigneeHitachi, Ltd.
InventorsHideo Nishida, Hiromi Kobayashi, Haruo Miura, Takeo Takagi
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AssigneeHitachi, Ltd.
InventorsHideo Nishida, Hiromi Kobayashi, Haruo Miura, Takeo Takagi
Estimating the term…
A compressor is disclosed are disposed in which a diffuser flow passage is curved to a radial direction in the vicinity of an outlet of a mixed-flow impeller, and guide vanes are disposed in which each is of a height (projecting into the diffuser flow passage in a direction substantially transverse to the direction of flow) that is less than the meridional flow passage width such that the minimum inlet radius is larger than a maximum radius at the outlet of the mixed-flow impeller and are arranged in the form of a circular cascade at the curved portion on a flow passage surface of the diffuser plate located on a shroud side. Thus, it is possible to keep uniform the flow within the diffuser and to enhance the performance of the compressor. In addition, the axial length of the compressor may be shortened to thereby make the compressor compact in size.
In a mixed-flow compressor having a mixed-flow impeller in which a flow-out direction in a meridional plane of the impeller is leaned from a radial direction, and a pair of diffuser plates provided downstream of the mixed-flow impeller, wherein a diffuser flow passage is identical with the flow-out direction of said mixed-flow impeller at an inlet portion and is directed to the radial direction at an outlet portion, the improvement comprising:
In a mixed-flow compressor having a mixed-flow impeller in which a flow-out direction in a meridional plane of the impeller is leaned from a radial direction, and a pair of diffuser plates provided downstream of the mixed-flow impeller, wherein a diffuser flow passage is identical with the flow-out direction of said mixed-flow impeller at an inlet portion and is directed to the radial direction at an outlet portion, the improvement comprising:
In a mixed-flow compressor having a mixed-flow impeller in which a flow-out direction in a meridional plane of the impeller is leaned from a radial direction, and a pair of diffuser plates provided downstream of the mixed-flow impeller, wherein a diffuser flow passage is identical with the flow-out direction of said mixed-flow impeller at an inlet portion and is directed to the radial direction at an outlet portion, the improvement comprising:
Dependencies are inferred from the claim text.