Kabushiki Kaisha Toshiba

Mitsubishi Heavy Industries Compressor Corporation

Mitsubishi Heavy Industries Limited

Ryosuke Saito

Toshio Konno

Kohei Wada

Tomohiro Hamada

Toshikazu Shiroishi

Tomoko Kitamura

Hiroyuki Minaguchi

Akihiro Nakaniwa

Tomomi Murayama

Hiromichi Suzuki

Yuji Nakajima

Yuichi Hirai

Yasuyuki Horii

Shinichiro Tokuyama

Jo Masutani

Shuichi Yamashita

Takayuki Arisaka

Naohiro Yokoyama

Seiji Hashimoto

Shinji Iwamoto

Junichi Nonomura

Toshikazu Shiroshi

A centrifugal compressor includes impellers arranged in a plurality of stages in a direction of an axis line so that a working fluid flowing from one side inlet in the direction of the axis line is pumped outward in a radial direction, and a casing that surrounds the impellers, and that has a return channel through which the working fluid discharged from the impeller on a front stage side between the impellers adjacent to each other is guided inward in the radial direction so as to be introduced to the impeller on a rear stage side, and a plurality of return vanes disposed at an interval in a circumferential direction inside the return channel. The return vane is configured so that the thickness of a hub side in a leading edge side region is thicker than the thickness of a shroud side.

Centrifugal compressor

This diffuser vane (), of which a blade height direction is aligned with an axial direction, has an airfoil shape in cross section orthogonal to the blade height direction, and comprises a body which, starting from a leading edge at the end on the radially inner side toward the radially outer side, extends toward the front side in an impeller rotating direction (R) and reaches a trailing edge at the end on the radially outer side. In the body of the diffuser vane, the turning angle of a shroud-side blade shape (S) that is the airfoil of an end face on one side in the axial direction is different from the turning angle of a hub-side blade shape (H) that is the airfoil of an end face on the other side in the axial direction. The airfoils form a transition continuously between the shroud-side blade shape and the hub-side blade shape. The turning angle of the hub-side blade shape is smaller than the turning angle of the shroud-side blade shape.

Diffuser vane and centrifugal compressor

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.

An impeller with a disc that rotates about an axis, and blades a plurality of which are disposed in the circumferential direction of the disc with intervals therebetween. A defined blade angle of the blade has a prescribed gradual increase region and gradual decrease region from the center towards the outside, and at the center of an inflection region of the gradual increase region and of the gradual decrease region, provided is a partial gradual decrease region having a smaller blade angle decrease amount than the blade angle increase amount of the gradual increase region.

Impeller and rotating machine provided with same

A centrifugal rotation machine includes a rotation shaft, a plurality of impellers rotating along with the rotation shaft, a casing defining a return flow channel configured to guide the fluid from the front-stage impeller to the rear-stage impeller, and a plurality of return vanes installed in the return flow channel, the return flow channel includes a return bend section guiding the fluid G, which has been sent from the front-stage impeller to the outside in the radial direction, to the inside in the radial direction, the return bend section includes a first curved portion and a second curved portion connected to the downstream side of the first curved portion, and the radius of curvature of an inside wall surface of the second curved portion in the radial direction is greater than the radius of curvature of an inside wall surface of the first curved portion in the radial direction.

Centrifugal rotation machine

An impeller for a centrifugal rotary machine has a plurality of blades () arranged at intervals in a circumferential direction on a face facing a direction of an axis of a disc () formed in a discoid shape about the axis, wherein the blades () each include a first section (A) rising from the disc () and inclined toward an opposite direction of a rotary direction (R) as the distance from the disc and a second section (A) continuing from the first section (A) and inclined toward a forward direction of the rotary direction (R) as the distance from the disc () between the leading edges and the trailing edges in the blades ().

Impeller for centrifugal rotary machine, and centrifugal rotary machine

Provided is an impeller and a fluid machine which have an annular hub () and a plurality of blades () radially arranged along an outer peripheral surface of the hub (). On a pressure surface (P) of the blade (), there are provided a first pressure surface () extending from the hub () side at an angle of 90 degrees or less with respect to the forward direction of the rotation direction (A), and a second pressure surface () extending from the first pressure surface () at an angle of more than 90 degrees with respect to the forward direction of the rotation direction (A). This configuration reduces a low-energy fluid stagnating on a suction surface side of the blade, achieving higher impeller efficiency.

Impeller and fluid machine

According to one embodiment, an electronic device includes: a housing configured to house an electronic component; a first housing member comprising a first wall; a second housing member comprising a second wall overlapping the first wall with a gap therebetween; a first connecting structure configured to fix the first wall and the second wall; a second connecting structure positioned closer to an end of the first wall or the second wall than the first connecting structure and configured to connect the first wall and the second wall with play between the first wall and the second wall.

Television receiver and electronic device

According to one embodiment, an electronic device includes a housing, a member, and an intervening portion. The housing includes a pair of first hook portions extending in one direction and an opening extending in the one direction and being between the pair of first hook portions. The member includes a pair of second hook portions configured to catch the first hook portions and is movable in the opening in the one direction. The intervening portion is configured to be between the pair of second hook portions. The intervening portion is configured to keep the member to be in a movable state and to come into contact with the second hook portions that elastically approach to each other such that the second hook portions keep catching the first hook portions.

Electronic device

According to one embodiment, a stand for an electronic device, includes a first housing and a connector. The connector is configured to detachably connect to the electronic device and to be rotatably supported by the first housing. The electronic device includes a display face and a second housing. The second housing includes a first opening formed at an end thereof. The connector includes a support, a protrusion, and a base member. The support is configured to support the second housing from outside. The protrusion is spaced from the support and inserted into the first opening. The base member includes a first part configuring at least a portion of the support and a second part integrated with the first part and configuring at least a portion of the protrusion.

Stand for electronic device and electronic device

According to one embodiment, an electronic apparatus includes a housing and a stylus holder accommodated in the housing. The stylus holder includes a holding portion that is supported in the housing and configured to ejectably hold a stylus for handwriting input and a reinforcing wall that is provided to the holding portion and configured to reinforce the housing from the inside of the housing.

Electronic apparatus

According to one embodiment, a television receiver includes: a display; a circuit board; a housing; an antenna; and a shield. The display includes a display screen. The circuit board is located at a side of the display opposite the display screen. The housing is configured to house the display and the circuit board. The antenna is in the housing, and includes a communication portion and a ground portion. The shield is along a periphery of the ground portion in the housing, and is located between the antenna and the circuit board.

According to one embodiment, an electronic apparatus includes a first case, a second case, a first hinge which has a first fixing portion fixed to the first case and a second fixing portion fixed to the second case and rotatably connects the first case and the second case, and a first reinforcing plate configured to be fixed to the first fixing portion and spaced apart from an inner surface of a first cover and an inner surface of a second cover inside the first case. The first case includes a first storing portion storing electronic parts and a second storing portion projecting from the first storing portion and storing the first fixing portion. The first reinforcing plate extends over both the first storing portion and the second storing portion.

According to one embodiment, an electronic apparatus includes a first housing, a second housing, a mounting portion, and a hinge. The mounting portion is provided in the first housing. The mounting portion includes a mounting surface, a first pin protruding from the mounting surface, and a receiver including an insertion groove. The hinge is attached to the second housing and includes a fixing portion. The fixing portion includes a main portion mounted on the mounting surface, an elongated hole provided in the main portion and configured to engage with the first pin, and an inserting portion configured to be inserted into the insertion groove and supported by the receiver from a side opposite to the mounting surface.

According to one embodiment, a lighting unit incorporated in the housing of a note PC includes a lens unit provided with a plurality of light guiding lenses formed of a transparent resin, and a plurality of couplers coupling the light guiding lenses. A plurality of light shielding plates project from the inner surface of the housing between the light guiding lenses. Each light shielding plate has an upper edge at a level higher than the light input surfaces of the light guiding lenses.

Growing community of inventors

Koganei, Japan

Ryosuke Saito