Panasonic Corporation

Panasonic Intellectual Property Management Co., Ltd.

Panasonic Appliances Refrigeration Devices Singapore

Yu Haraki

Ko Inagaki

Masanori Kobayashi

Takumi Hikichi

Hidenori Kobayashi

Yoshinori Ishida

Yasushi Hayashi

Tsuyoshi Matsumoto

Naoki Sakamoto

Hiroyuki Itsuki

A hermetic compressor () includes an electric element (), a compression element (), and a hermetic container (). The compression element includes a shaft (), a cylinder block (), a piston (), a connection section (), and an oil supply mechanism (). The piston has a columnar seal section () in sliding contact with an inner peripheral face of the cylinder, two extension sections () that have circular arc faces each having the same radius as a radius of the seal section and extend from the seal section to the bottom dead center side in the axial direction with a circumferential gap therebetween, and a columnar capture section () that extends further toward the bottom dead center side than the extension section and has a smaller radius than the radius of the seal section.

Hermetic compressor and refrigerator

A valve device of a compressor of the present invention comprises a plate (), a reed (), and a stopper (), wherein the reed includes: an opening/closing section (), a fastened section (); and a joining section (), the opening/closing section, the fastened section and the joining section being arranged in a direction in which a symmetric axis extends; wherein in a portion of the joining section which is closer to the opening/closing section, a pair of portions () of an outer periphery of each of one or two openings () which are closest to both ends of the joining section are symmetric with respect to the symmetric axis so as to form a substantially-V-shape or substantially-U-shape, in a direction from the opening/closing section toward the fastened section; and in a portion of the joining section which is closer to the fastened section, a pair of portions () of the outer periphery of each of one or two openings which are closest to the both ends of the joining section are symmetric with respect to the symmetric axis so as to form a substantially-V-shape or substantially-U-shape, in a direction from the fastened section toward the opening/closing section.

Valve device of compressor, and sealed compressor including valve device

A heat pump apparatus includes an evaporator evaporating a refrigerant, an electrochemical compressor compressing the refrigerant evaporated in the evaporator, and a condenser condensing the refrigerant compressed by the electrochemical compressor. The heat pump apparatus is structured such that the refrigerant in a wet steam state is supplied from the evaporator to the electrochemical compressor.

Heat pump apparatus

A heat pump apparatus () includes an evaporator (), an electrochemical compressor (), a condenser (), a refrigerant delivery path (), and a non-condensable gas return path (). The non-condensable gas return path () is provided separately from the refrigerant delivery path (), and is configured to communicate a discharge-side high-pressure space of the electrochemical compressor () with a suction-side low-pressure space of the electrochemical compressor () so as to return a non-condensable gas from the high-pressure space to the low-pressure space. The non-condensable gas is, for example, hydrogen gas.

A hermetic compressor includes a thrust ball bearing () on the thrust face () of the main bearing (). The thrust ball bearing () includes balls () held in a holder (), an upper race () and a lower race () arranged respectively on and beneath the balls (), and an elastic support member () below the balls (). The hermetic compressor is prevented from causing a load to be applied unevenly to the balls (), thereby achieving high efficiency, low noise level, and high reliability.

Growing community of inventors

Osaka, Japan

Yu Haraki