Hitachi, Ltd.

Atushi Shimada

Nobuo Abe

Koichi Sekiguchi

Koichi Inaba

Toshiyuki Terai

Kunio Fukami

Tatuya Wakana

Masami Masuda

Mitsuaki Haneda

Keiji Taguchi

Shigeya Kawaminami

Toshio Yamanaka

Kazuo Ikeda

Kooichi Inaba

Hidenari Takada

Tatuo Horie

Masanori Wakaizumi

Nobutoshi Hoshino

In a scroll compressor, a groove is provided on a sliding face with a rotating scroll plate, of a fixed scroll plate, the periphery corner of the orbiting scroll plate rotates in a range between a position inner than the periphery side corner of the groove and the sliding face locating inner side than the internal circumference side corner of the groove.

Scroll compressor having a fixed scroll plate with groove

In a compressor, a lubricant groove for a contact area between a self-aligning spherical bearing and a housing therefor opens to a relatively low pressure chamber, but is prevented from opening to a relatively high pressure chamber, the housing has an arrangement for restraining a transmission of deformation and/or heat energy from a welded portion thereon to the contact area, and a main shaft, the housing, a housing lid and a pipe for lubricant circulation are coaxially arranged.

Compressor with self-aligning rotational bearing

A closed type motor-driven compressor includes a motor accommodated in a closed container and a compression mechanism connected through a crank shaft to the motor. A shielding member having a cylindrical portion substantially concentric with the axis of the compression mechanism is disposed between the motor and the compression mechanism. This shielding member defines a shielding air space between the motor and the compression mechanism for preventing a permeation of a lubricating oil. An inlet of a discharge pipe of the closed type motor-driven compressor is positioned inwardly of this shielding air space.

Closed type motor-driven compressor, a scroll compressor and a scroll

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Tochigi, Japan

Atushi Shimada