Mitsubishi Heavy Industries Engine & Turbocharger, Ltd.

Takaaki Yoshizawa

Byeongil An

Naomichi Shibata

Takaya Futae

Shunsuke Yakushiji

Yuki Ito

Kenji Oura

Takuma Nomiyama

Yuki Yasuoka

A multi-stage electric centrifugal compressor configured to drive impellers disposed at both ends of a rotational shaft by an electric motor includes: the rotational shaft; a low-pressure-stage impeller disposed at one end of the rotational shaft; a high-pressure-stage impeller disposed at the other end of the rotational shaft; a high-pressure-stage housing accommodating the high-pressure-stage impeller; and a connecting pipe for supplying a compressed gas compressed by the low-pressure-stage impeller to the high-pressure-stage housing. The high-pressure-stage housing has a high-pressure-stage inlet opening that opens in a direction intersecting an axis of the rotational shaft. The connecting pipe includes a high-pressure-stage-side connection portion connected to the high-pressure-stage inlet opening.

Multi-stage electric centrifugal compressor

Provided is a technology that can sufficiently suppress the temperature rise of a rotary electrical machine. A rotary electrical machine includes a main body partincluding a rotator and a stator, and a casing partthat houses the main body part. The casing partincludes a first housing partthat surrounds the main body partfrom a peripheral direction, and a second housing partthat houses a bearing for rotatably supporting a rotating shaft. The casing partis formed with a cooling passage R extending from an inlet Rs for cooling medium to an outlet Re for cooling medium and not branching off in the middle. The cooling passage R includes a first cooling passage portion Rthat passes through the inside of the first housing partand a second cooling passage portion Rthat passes through the inside of the second housing part

Rotary electrical machine

A rotary electric machine includes a housing, a stator disposed in the housing, and at least two support members disposed in at least two different parts, respectively, in an axial direction of the stator between the housing and an outer circumferential surface of the stator, the at least two support members supporting the stator against the housing. The at least two support members, the housing, and the outer circumferential surface of the stator form a space.

Rotary electric machine with vibration and noise reduction

Growing community of inventors

Sagamihara, Japan

Takaaki Yoshizawa