Centrifugal compressor and turbocharger
AssigneeMitsubishi Heavy Industries Engine & Turbocharger, Ltd.
InventorsKenichiro IWAKIRI, Isao TOMITA
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Abstract
A centrifugal compressor comprises: an impeller; an inlet pipe portion forming an intake passage to introduce air to the impeller; and a throttle mechanism capable of reducing a flow passage area of the intake passage upstream of the impeller. When PA is a throttle position where the throttle mechanism minimizes the flow passage area of the intake passage, PB is a tip position of a leading edge of a blade of the impeller, L is a distance between the throttle position PA and the tip position PB of the leading edge in an axial direction of the impeller, and D is a diameter of the impeller at the tip position PB of the leading edge, the distance L and the diameter D satisfy L/D≤0.2.
Claims9
1-9. (canceled)
A centrifugal compressor, comprising:
- an impeller;
- an inlet pipe portion forming an intake passage to introduce air to the impeller;
- and
- a throttle mechanism capable of reducing a flow passage area of the intake
- wherein, when D is a diameter of the impeller at a tip position of a leading edge of a blade of the impeller, A1 is an area of a circle having the diameter D, PA is a throttle position where the throttle mechanism minimizes the flow passage area of the intake passage, and A2 is a minimum flow passage area of the intake passage at the throttle position PA,
- the area A1 and the area A2 satisfy 0.55<A2/A1<0.65.
Dependencies are inferred from the claim text.