Kabushiki Kaisha Toshiba

Toshiya Yajima

Naoya Morozumi

Hirotsugu Sakata

Makoto Hayano

Teruo Kobuna

Takuya Hirayama

Masayuki Okuda

Tsugio Itami

Takeshi Kumazawa

A fluid compressor with bearing means disposed inside a rotary member includes a cylinder having an inner circumferential surface therein; supporting means for rotatably supporting both ends of the cylinder; a rotary member arranged in the cylinder so as to extend in the axial direction of the cylinder and be eccentric thereto, the rotary member having a spiral groove formed on an outer circumferential surface thereof, the spiral groove having pitches gradually narrowing with a distance from a suction-side end to a discharge-side end of the cylinder; a spiral blade fitted in the spiral groove so as to be slidable in the radial direction of the rotary member; and drive unit for rotating the cylinder and the rotary member, wherein the supporting member is characterized in that the supporting member is extended inwardly the rotary member from a base portion fixed to the case.

Fluid compressor with bearing means disposed inside a rotary rod

A fluid compressor comprises a rotary member, a cylinder, and a closed casing for receiving the rotary member and cylinder. The rotary member and cylinder are relatively turned so that a fluid is drawn into work chambers through a suction port, successively compressed and conveyed toward a discharge port through the work chambers, and discharged outside. The fluid compressor is provided with a control valve means. When pressure in the work chambers exceeds a predetermined value during the compressing process, the control valve releases the pressure through a discharge or suction end of the cylinder, or to the inside of the casing.

Fluid compressor

A scroll compressor comprises a first end member having an axis, a second end member facing the first end member, relatively movable crosswise of the first end member and having an axis, a bearing portion extending through either one of central portions of the first and second end members, a first scroll wrap formed in a vortical manner and extending from the face of the second scroll end member, the first scroll wrap having an inner end portion and an inner face, a second scroll wrap formed in a vortical manner and extending from the face of the second end member so as to interdigitate with the first end member, the second scroll wrap having an outer end portion and an inner face, a low gas pressure chamber and a high pressure chamber formed around or in the first and second end members, compressing chambers defined between the first and second scroll wraps, and engaging portions formed on the inner portions of the first and second scroll wraps and each having a guide face, the guide faces of the first and second scroll wraps being formed to remain contacted with the inner end portion of the first scroll wrap and the outer end of the second scroll wrap, respectively, and to guide the respective first and second scroll wraps such that the compressing chambers are moved to compress gas therein stronger during a compressing process of the scroll compressor.

Scroll compressor with distal ends of the wraps having sliding contact

A gas compressor comprises a fixed scroll member and a movable scroll member. A plurality of crescent working chambers are defined between the scroll members so that the volume of the working chambers varies when the scroll members are relatively moved. The compressor has a container which seals a power source and the scroll members and forms inner spaces therebetween. An intake port for drawing a gas from the exterior of the container into the working chambers is formed in the outer peripheral region of the fixed scroll member, and an axial port is formed in the inner region of the fixed scroll member so that the working chambers communicates therewith.

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Yokohama, Japan

Toshiya Yajima