Panasonic Intellectual Property Management Co., Ltd.

Daisuke Funakosi

Hiroshi Hasegawa

Takeshi Ogata

Takumi Hikichi

Hirofumi Yoshida

Masanobu Wada

Akira Hiwata

Kentaro Shii

Yu Shiotani

Hiroaki Nakai

Tadayoshi Shoyama

Tsuyoshi Karino

Ryuichi Ohno

A rotary compressor () includes a closed casing (), a cylinder (), a piston (), a lower bearing member (), a vane (), a suction port (), a discharge port (), and a partition member (). The partition member () is attached to the lower bearing member () so as to form a refrigerant discharge space () serving as a flow path of a refrigerant discharged from a discharge chamber () through the discharge port (). The lower bearing member () is provided with a first recess () on the same side as the suction port () with respect to a reference plane, the reference plane being a plane including a central axis of the cylinder () and a center of the vane () when the vane () protrudes maximally toward the central axis of the cylinder (). A portion of oil stored in an oil reservoir () flows into the first recess (), and thereby an oil retaining portion () is formed.

Rotary compressor

A rotary compressor () includes a closed casing (), a cylinder (), a piston (), a lower bearing member (), a vane (), a suction port (), a discharge port (), and a partition member (). The partition member () is attached to the lower bearing member () so as to form a space enclosed by the partition member () and the lower bearing member () at a position adjacent to the lower bearing member (). A portion of an oil stored in the oil reservoir () flows into the enclosed space, and thereby an oil retaining portion () is formed. The oil retaining portion () is located on the same side as the suction port () with respect to a reference plane (H).

Rotary compressor with oil retaining portion

Growing community of inventors

Shiga, Japan

Daisuke Funakosi