Fixed vane turbocharger
AssigneeMitsubishi Heavy Industries Engine & Turbocharger, Ltd.
InventorsTakao Yokoyama, Toru Hoshi
Life of this patent
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Abstract
A fixed vane turbocharger includes: an impeller; a housing including, inside thereof, an impeller housing space which accommodates the impeller, a scroll flow passage formed on a radially outer side of the impeller, and a communication flow passage which brings the impeller housing space and the scroll flow passage into communication; and at least one fixed vane unit disposed in the communication flow passage and fixed to a portion of the housing on an inner side of the scroll flow passage with respect to a radial direction of the impeller. Each of the at least one fixed vane unit includes at least two vane portions and a coupling portion coupling the two vane portions, and is formed of a single sheet metal member.
Claims16
A fixed vane turbocharger, comprising:
- an impeller;
- a housing including, inside thereof, an impeller housing space which accommodates the impeller, a scroll flow passage formed on a radially outer side of the impeller, and a communication flow passage which brings the impeller housing space and the scroll flow passage into communication;
- and
- at least one fixed vane unit disposed in the communication flow passage and fixed to a portion of the housing on an inner side of the scroll flow passage with respect to a radial direction of the impeller,
- wherein each of the at least one fixed vane unit includes at least two vane portions and a coupling portion coupling the two vane portions, each of the vane portions comprising a vane having a pressure surface and a suction surface, the coupling portion coupling each of side edges of the two vane portions from each of leading edges to trailing edges of the two vane portions, and
- wherein each of the at least one fixed vane unit has a shape formed by bending or curving a single sheet metal member,
- wherein the at least one fixed vane unit includes a plurality of separate fixed vane units disposed at intervals in a circumferential direction.
A fixed vane turbocharger, comprising:
- an impeller;
- a housing including, inside thereof, an impeller housing space which accommodates the impeller, a scroll flow passage formed on a radially outer side of the impeller, and a communication flow passage which brings the impeller housing space and the scroll flow passage into communication;
- and
- at least one fixed vane unit disposed in the communication flow passage and fixed to a portion of the housing on an inner side of the scroll flow passage with respect to a radial direction of the impeller,
- wherein each of the at least one fixed vane unit includes at least two vane portions and a coupling portion coupling the two vane portions, each of the vane portions comprising a vane having a pressure surface and a suction surface, the coupling portion coupling each of side edges of the two vane portions from each of leading edges to trailing edges of the two vane portions, and
- wherein each of the at least one fixed vane unit has a shape formed by bending or curving a single sheet metal member,
- wherein the at least one fixed vane unit includes a plurality of fixed vane units stacked in an axial direction of the impeller, each of the plurality of fixed vane units having a different shape.
A fixed vane turbocharger, comprising:
- an impeller;
- a housing including, inside thereof, an impeller housing space which accommodates the impeller, a scroll flow passage formed on a radially outer side of the impeller, and a communication flow passage which brings the impeller housing space and the scroll flow passage into communication;
- and
- at least one fixed vane unit disposed in the communication flow passage and fixed to a portion of the housing on an inner side of the scroll flow passage with respect to a radial direction of the impeller,
- wherein each of the at least one fixed vane unit includes at least two vane portions and a coupling portion coupling the two vane portions, each of the vane portions comprising a vane having a pressure surface and a suction surface, the coupling portion coupling each of side edges of the two vane portions from each of leading edges to trailing edges of the two vane portions, and
- wherein each of the at least one fixed vane unit has a shape formed by bending or curving a single sheet metal member,
- wherein a leading-edge side portion of the vane portion is rounded so that a tip of the leading-edge side portion is positioned downstream of a leading edge of the vane portion, the leading-edge side portion including a predetermined range from the tip of the vane portion.
Dependencies are inferred from the claim text.