Patent ID: 9140271
Filing Date: 2015-09-22
Classification: F04D

Abstract:
1. An impeller of a centrifugal compressor, the impeller comprising: a plurality of full blades provided from a fluid inlet side to a fluid outlet side on a hub surface, the full blades being provided side by side; a plurality of splitter blades provided in a flow passage formed between a pair of the mutual adjacent full blades from a part way of the flow passage to the outlet side, wherein, in a cross section view depicting a geometry along a tip end curve of the full blades, a leading edge of the splitter blade is placed in a fluid flow streaming along the flow passage between the full blades, on the downstream side of a leakage vortex line formed to connect the middle location of a throat to the leading edge of a front side full blade, the throat being formed so that a distance from a leading edge of a rear side full blade located on the rear side of the rotation direction of the centrifugal compressor to a blade suction surface of the front side full blade adjacent to the rear side full blade and located on the front side of the rotation direction is minimized.