Mitsubishi Heavy Industries Compressor Corporation

Mitsubishi Heavy Industries Limited

Mitsubishi Industries, Ltd.

Akihiro Nakaniwa

Shinichiro Tokuyama

Shuichi Yamashita

Daisuke Hirata

Nobuyori Yagi

Jo Masutani

Hirofumi Higuchi

Yoshiaki Shoji

Satoru Yoshida

Ryosuke Saito

Takashi Oda

Eiichi Yanagisawa

Shin Yanagisawa

Kazutoshi Yoko

Hitoshi Shinohara

Takanori Matsueda

Akinori Tasaki

Masayuki Sakai

Katsuya Yamashita

Masahiro Kobayashi

Hideki Nagao

Tsuyoshi Kitamura

Hiroyuki Miyata

Chihiro Myoren

Toyoaki Yasui

Masahiro Ishikawa

Yasuro Sakamoto

Yuya Konno

Takashi Hiyama

Yasutaka Aoki

Noriyuki Okada

Yujiro Watanabe

Atsushi Higashio

Junji Iwatani

Koji Maeta

Kazuyoshi Miyagawa

Shinji Iwamoto

Daisuke Kawanishi

Tokiya Wakai

Yuji Futagami

Sosuke Kawasumi

Takehiko Imai

Naotaka Uchimichi

An electric fan includes: an electric motor that includes an output shaft extending along an axis line and a tubular housing centered on the axis line; an inner duct provided on a downstream side of the electric motor; a plurality of blades mounted on the output shaft; and a cooling member having a plurality of fins provided on an outer peripheral surface of the housing.

Electric fan and electric aircraft

A compressor includes a rotation shaft which rotates around an axis, an impeller which press-feeds a fluid from one side in an axial direction toward an outward side in a radial direction by rotating together with the rotation shaft, a casing which surrounds the rotation shaft and the impeller and in which an exit flow channel for introducing a fluid press-fed from the impeller is formed, and an acoustic liner which is provided so as to face the inside of the exit flow channel in the casing. The acoustic liner has a plurality of open hole portions which are arranged with intervals therebetween, and acoustic spaces which communicate with the open hole portions and are independently provided for the respective open hole portions.

Compressor

A centrifugal compressor includes a rotary shaft having a plurality of impellers and a casing having an intermediate discharge port. The casing has a plurality of diaphragms, an external casing, a return flow path that guides a flow direction of a working fluid to an inner side in a radial direction, and an intermediate scroll that guides part of the working fluid discharged from the impeller in an intermediate stage to the intermediate discharge port. The intermediate scroll has a scroll flow path formed on a second side in the axial direction with respect to the return flow path, and an introduction portion connecting the return flow path and the scroll flow path, and an outer flow path forming surface of the scroll flow path is formed by a casing inner peripheral surface facing an inner side of the external casing in the radial direction.

Centrifugal compressor

The impeller of a rotating machine according to at least one embodiment of the present discloser is provided with: a disc; a cover disposed on an opposite side of a radial passage from the disc in an axial direction; and a blade disposed between the disc and the cover. In a dimensionless position along a camber line of the blade when the position of a leading edge of the blade is defined as 0 and the position of a trailing edge of the blade is defined as 1, a position where an angle difference between a first blade angle at a disc-side end portion of the blade and a second blade angle at a cover-side end portion of the blade is maximum is in a range of 0.5 or more and 1 or less. The first blade angle is &#x2212;10 degrees or more and 0 degrees or less at the position where the angle difference is maximum.

Impeller of rotating machine and rotating machine

A compressorincludes a casingthat covers a rotating shaftand an impellerand is provided with a diffuserfor guiding the working fluid discharged from the impellerto an outside in a radial direction, a heat exchangerthat is cools at least a portion of the working fluid compressed by the impeller, a cooling fluid supplying unitthat supplies the working fluid cooled by the heat exchangerinto the casingas a cooling fluid for cooling a motordisposed in the casing, and a cooling fluid circulating unitthat discharges the cooling fluid that has passed through the motorto an outside of the casing, and supplies the discharged cooling fluid downstream of an outletof a first impellerA and upstream of the diffuser

An impeller includes a disk that has a disk shape centered on an axis, a cover that is disposed to be separated from the disk in an axial direction in which the axis extends, a plurality of blades that connect the disk and the cover to each other and are disposed at intervals in a circumferential direction around the axis, and a connection member that is disposed to be separated from the plurality of blades in the axial direction and connects the disk and the cover to each other. A plurality of the connection members are disposed at intervals in the circumferential direction at positions near an inlet of an impeller flow path with respect to front edges of the blades positioned at positions near the inlet, the impeller flow path being formed between the disk and the cover.

Impeller and rotary machine

A suction-and-discharge flow path includes a circumferential flow path that extends in an arc shape about an axis and an external communication path that is connected to both ends of the circumferential flow path. The circumferential flow path has a uniform flow path cross-sectional area in a circumferential direction, and a convex curved surface having a convex curved surface shape is provided between an outer peripheral wall surface of the circumferential flow path and a second inner wall surface of the external communication path. In a case where, when viewed in the axis direction, a curvature radius of the convex curved surface is defined as R and a radial dimension of the circumferential flow path is defined as W, a relationship of W&#x2264;R&#x2264;3W is established.

Centrifugal compressor and turbo refrigerator

This centrifugal rotary machine includes an impeller having a disk, blades, and a cover. The centrifugal rotary machine further includes a casing which accommodates the impeller radially inward and forms a gap between an outer circumferential surface of the cover and the casing. The centrifugal rotary machine further includes a sealing device which seals the gap. The casing includes an end wall surface which is disposed to face one axial side of a cover end surface facing one axial side of the cover, extends in the radial direction and forms a radial flow path between the end wall surface and the cover end surface. The casing further includes a foreign matter introduction path which is formed inside the casing and communicates with a radially outer side of the radial flow path.

Centrifugal rotary machine

A centrifugal compressor is provided with a plurality of diaphragms including a first diaphragm and a second diaphragm which are adjacent to each other in an axial direction, a casing disposed on a radially outer side of the plurality of diaphragms and accommodating an internal component including the plurality of diaphragms, at least one axial spacer disposed between the first diaphragm and the second diaphragm, and a scroll flow passage formed by a scroll inner peripheral wall and a scroll outer peripheral wall. The scroll inner peripheral wall is formed by a surface of the first diaphragm positioned on a radially inner side of an outer peripheral surface of the first diaphragm. At least a part of the scroll outer peripheral wall is formed by an inner peripheral surface of the casing.

An impeller includes: a disk that has a disk shape and is configured to rotate around an axis; and a plurality of blades that are provided at intervals in a circumferential direction on a side of a surface of the disk toward a direction of the axis and extend to a rear side in a rotation direction as the plurality of the blades go toward an outer side in a radial direction. Each of the plurality of the blades has: a primary blade which extends to the rear side in the rotation direction as the primary blade goes from an inner side toward the outer side in the radial direction, and a secondary blade which is provided at intervals on a side in front of the primary blade in the rotation direction to correspond to the primary blade.

A multi-stage centrifugal compressor includes: a rotary shaft that is configured to rotate around an axis; a plurality of stages of impellers that are fixed to the rotary shaft and are configured to integrally rotate to compress and deliver a fluid, which flows into the impellers from an upstream side in an axial direction, to a radial outer side; a casing including a return flow path that is configured to guide the fluid, which is compressed and delivered from an impeller on a preceding stage side, toward a radial inner side, and an introduction flow path that is connected to a downstream side of the return flow path and is configured to divert the fluid and introduce the fluid to an impeller on a succeeding stage side; and return vanes that are arranged in the return flow path while being spaced apart from each other in a circumferential direction.

Multi-stage centrifugal compressor, casing, and return vane

A centrifugal rotary machine includes: an impeller which includes a disk, blades, and a cover; and a sealing device which seals the gap, in which the casing includes an end wall surface which defines a radial flow path between the end wall surface and a cover end surface, an inlet-side inner peripheral surface which is connected to a radially inner side of the end wall surface and extends to the one side in the axial direction so as to define an introduction flow path of a fluid to the impeller, and a circulation flow path which is formed in the casing and is open to an end portion on a radially outer side of the end wall surface and the inlet-side inner peripheral surface to cause the radial flow path and the introduction flow path to communicate with each other.

A sealing device includes a ring part, a first fin group that together with a first outer peripheral surface forms a clearance, and a second fin group of which the front end is positioned farther radially inward than the first outer peripheral surface and which together with a second outer peripheral surface forms a clearance. The ring part has a first gas supply channel capable of supplying a first sealing gas to the first fin group, a second gas supply channel capable of supplying a second sealing gas to the second fin group, and a mixed gas discharge channel capable of discharging a mixed gas of the first sealing gas and the second sealing gas from between the first fin group and the second fin group.

Sealing device and compressor

A rotary machine includes: a casing; a rotor that includes a rotatable rotary shaft located inside the casing, and a plurality of stages of impellers fixed to an outer periphery of the rotary shaft; a diaphragm group including diaphragms that are respectively provided in the plurality of stages of the impellers; gas flow paths provided respectively corresponding to the impellers and through which process gas to be compressed flows; and a discharge volute connected to the gas flow paths. The discharge volute is provided to expand inward in an axis line direction of the casing.

Rotary machine

A centrifugal compressor includes: a rotating shaft; a first impeller; a second impeller which is disposed on a downstream side of the first impeller; a return flow path which guides a first fluid flowing to a radially outer side from the first impeller toward a radially inner side; an introduction flow path which introduces the fluid guided to the radially inner side to the second impeller; an intermediate suction flow path which additionally supplies a second fluid to the second impeller; and a curved flow path which is connected to a downstream side of the introduction flow path and the intermediate suction flow path, and guides the first fluid and the second fluid to the second impeller, wherein a side surface on an upstream side of the introduction flow path is disposed on the downstream side from a return position of the return flow path.

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Tokyo, Japan

Akihiro Nakaniwa