Hitachi, Ltd.

Tatuya Wakana

Nobuo Abe

Atushi Shimada

Kunio Fukami

Masami Masuda

Koichi Sekiguchi

Koichi Inaba

Mitsuaki Haneda

Keiji Taguchi

Shigeya Kawaminami

Toshiyuki Terai

Toshio Yamanaka

Kazuo Ikeda

Kooichi Inaba

Hidenari Takada

Tatuo Horie

Masanori Wakaizumi

Nobutoshi Hoshino

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

Growing community of inventors

Tochigi, Japan

Tatuya Wakana