ON-OFF VALVE DEVICE AND ROTARY MACHINE
First Claim
1. An on-off valve device comprising a valve body which is disposed in a suction flow path which leads from an inflow port of a housing covering a turbine rotor blade to a scroll flow path which is spirally formed and has a flow path area gradually decreased toward the downstream side of a flow of a fluid and is configured of a single piece or multiple divided pieces to supply a fluid to the turbine rotor blade with an inner surface of the suction flow path formed using a first wall surface and a second wall surface facing the first wall surface as a portion of the suction flow path, extends from the upstream side toward the downstream side of the flow of the fluid, is rotatably provided in the housing in a direction toward and away from the first wall surface and the second wall surface, forms an upstream-side narrowed flow path between the first wall surface and the valve body at an end on the upstream side, and forms a downstream-side narrowed flow path between the second wall surface and the valve body at an end on the downstream side,wherein in the valve body, the end on the upstream side is an end facing the first wall surface, and the end on the upstream side is formed of a first surface which gradually goes away from the first wall surface after gradually approaches the first wall surface from the upstream side toward the downstream side, andwherein the valve body includes a second surface which faces the second wall surface at the end on the downstream side.
2 Assignments
0 Petitions
Accused Products
Abstract
A turbocharger is provided with a valve body which is disposed in a suction flow path (Cb) leading from an inflow port of a housing covering a turbine rotor blade to a scroll flow path (Ca) and composed of a single piece or multiple divided pieces to supply a fluid (G) to the turbine rotor blade with the inner surface thereof formed using a first wall surface and a second wall surface facing the first wall surface as part thereof, extends from the upstream side to the downstream side of the flow of the fluid (G), is rotatably provided in the housing in a direction toward and away from the first wall surface and the second wall surface, forms an upstream-side narrowed flow path (F1) with the first wall surface therebetween at an end on the upstream side, and forms a downstream-side narrowed flow path (F2) with the second wall surface therebetween at an end on the downstream side. The valve body has a first surface at the end on the upstream side, which faces the first wall surface, gradually approaches the first wall surface from the upstream side to the downstream side and thereafter gradually goes away therefrom, and a second surface which faces the second wall surface.
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Citations
20 Claims
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1. An on-off valve device comprising a valve body which is disposed in a suction flow path which leads from an inflow port of a housing covering a turbine rotor blade to a scroll flow path which is spirally formed and has a flow path area gradually decreased toward the downstream side of a flow of a fluid and is configured of a single piece or multiple divided pieces to supply a fluid to the turbine rotor blade with an inner surface of the suction flow path formed using a first wall surface and a second wall surface facing the first wall surface as a portion of the suction flow path, extends from the upstream side toward the downstream side of the flow of the fluid, is rotatably provided in the housing in a direction toward and away from the first wall surface and the second wall surface, forms an upstream-side narrowed flow path between the first wall surface and the valve body at an end on the upstream side, and forms a downstream-side narrowed flow path between the second wall surface and the valve body at an end on the downstream side,
wherein in the valve body, the end on the upstream side is an end facing the first wall surface, and the end on the upstream side is formed of a first surface which gradually goes away from the first wall surface after gradually approaches the first wall surface from the upstream side toward the downstream side, and wherein the valve body includes a second surface which faces the second wall surface at the end on the downstream side.
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16. A rotary machine, comprising:
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a rotary shaft which rotates about an axis; a turbine rotor blade which rotates along with the rotary shaft; a housing which covers the rotary shaft and the turbine rotor blade and in which a suction flow path and a scroll flow path through which a fluid is supplied to the turbine rotor blade are formed; and multiple guide portions which are disposed in the scroll flow path to go away from each other in a circumferential direction of a rotary shaft of the turbine rotor blade on the outside in a radial direction of the rotary shaft of the turbine rotor blade from the turbine rotor blade, and includes guide surfaces facing the inside in the radial direction, wherein the guide surface in the guide portion positioned on the upstream side in a flow of a fluid is provided so as to guide the fluid toward the guide surface in the guide portion positioned on the downstream side.
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Specification