Mitsubishi Heavy Industries Limited

Mitsubishi Heavy Industries Engine & Turbocharger, Ltd.

Koji Wakashima

Makoto Ozaki

Isao Tomita

Tadashi Kanzaka

Hiroshi Suzuki

Takashi Shiraishi

Hiroshi Saito

Takao Yokoyama

Katsuyuki Osako

Kimio Hatano

Bumpei Hashimoto

Takuya Rikimaru

A mixed-flow turbine wheel includes: a plurality of rotor blades disposed on a circumferential surface of the hub at intervals in a circumferential direction and configured such that each of the plurality of rotor blades has a leading edge which includes, in a meridional view, an oblique edge portion where a distance between the leading edge and an axis of the rotational shaft decreases from a tip side toward a hub side, and a sensor detection surface having a flat shape and being applied with a marking which is detectable by an optical sensor device. The sensor detection surface is formed on at least one of the circumferential surface of the hub or an edge portion of a reference rotor blade being one of the plurality of rotor blades, such that, in the meridional view, a trailing-edge side angle of two angles formed between the axis of the rotational shaft and a normal of the sensor detection surface is smaller than a trailing-edge side angle of two angles formed between the axis of the rotational shaft and a normal of the oblique edge portion.

Mixed-flow turbine wheel

A compressor cover covering a delivery fan radially outwardly discharging a fluid from an axial direction by rotating around the axis, the compressor cover comprising: a cover body including a tubular part in which a tubular inner peripheral surface along the axis and a shroud surface disposed on an axially downstream side of the tubular inner peripheral surface and expands in diameter toward the downstream side are formed; and a sleeve including an outer tube having an outer peripheral surface fitted to the tubular inner peripheral surface, an inner tube disposed on a radially inner side of the outer tube and defines a recirculation flow path in which a portion of the fluid circulates between the inner tube and the outer tube, and a plurality of struts disposed at intervals in the peripheral direction.

Compressor cover, centrifugal compressor, and turbocharger, and compressor cover manufacturing method

An object is to provide a fluid machine whereby it is possible to improve performance, for example, expand a flow-rate operation rage with a simplified shape of an intake pipe. A fluid machine includes an impeller mounted to a rotation shaft, a housing which houses the impeller rotatably, and an intake pipe for supplying a fluid to the housing. The intake pipe includes at least a first bend portion disposed on a first plane, and a second bend portion disposed at a downstream side of the first bend portion and on a second plane which is different from the first plane. The second bend portion includes an upstream section having a center axis oriented along a center axis of a downstream section of the first bend portion and a downstream section having a center axis oriented along an axial direction of the impeller at a front of the impeller. The intake pipe has a constant cross-sectional shape from an upstream end of the first bend portion to a downstream end of the second bend portion.

Fluid machine and fluid machine system equipped with the same

In a turbine scroll part structure of a radial turbine, a flow passageof a connecting part between an exhaust gas inlet into a turbine housingand a scroll partis offset along an axis line Lof a rotating shaft of a turbine rotor in an amount H, and a cut-out portion P is formed in a tongue portion, which separates the flow passagefrom a blade side passagethrough which the exhaust gas flows toward blades, for the exhaust gas to flow from the flow passageinto the blade side passage

Turbine scroll part structure

Growing community of inventors

Tokyo, Japan

Koji Wakashima