Panasonic Intellectual Property Management Co., Ltd.

Panasonic Corporation

Daisuke Funakoshi

Kenji Watanabe

Takeshi Ogata

Hirofumi Yoshida

Noboru Iida

Kiyoshi Sawai

Akira Hiwata

Shingo Oyagi

Hideto Oka

Hiroaki Nakai

Yu Shiotani

Tsuyoshi Karino

Ryuichi Ohno

Akinori Fukuda

Takeshi Hiratsuka

Shinichi Yoshizuka

Hitoshi Takao

Shozo Hase

Nobuyuki Kawahata

Toshihiro Sugie

Itsuo Shimizu

Hiroshi Sugiura

Takamasa Sakimoto

Masao Nakano

A compressor includes: a fixed scroll; at least one discharge port; a reed valve; a valve stop; and a ventilation hole. The at least one discharge port is disposed in the fixed scroll. The reed valve is disposed in the fixed scroll so as to block the at least one discharge port. The valve stop is disposed in the fixed scroll, and restricts the lift amount of the reed valve. The ventilation hole is disposed in the valve stop. In the present aspect, the flow of refrigerant gas is smoothed to suppress the compression loss, and the force applied to the reed valve can be suppressed. As a result, the efficiency and reliability can be improved.

Compressor

A compressor including fixed scroll and revolving scroll configuring compression mechanism, compression chamber formed between fixed scroll and revolving scroll, intake chamber provided on an outer circumferential side of fixed scroll, discharge port provided in a central part of fixed scroll, muffler provided to cover discharge port at an upper part of fixed scroll, and heat-insulating member provided between fixed scroll and muffler space formed by muffler. After a refrigerant gas taken into intake chamber is compressed by revolving scroll revolving and compression chamber moving while changing a volume of compression chamber, the refrigerant gas is discharged from discharge port. The refrigerant gas discharged from discharge port is discharged into muffler space.

In a rotary compressor of a vane rotary type, an outer peripheral surface of an eccentric portion of a shaft on a side adjacent to a center of the shaft is located radially inwardly of an outer peripheral surface of a main shaft inserted in a main bearing and that of an auxiliary shaft inserted in an auxiliary bearing. Also, a back clearance means used in mounting a piston on the shaft is provided in each of an inner peripheral surface of the piston and the eccentric portion of the shaft. Such configurations can reduce a diameter of the eccentric portion. A reduction in diameter of the eccentric portion can reduce a viscous force of oil acting between the eccentric portion of the shaft and the inner peripheral surface of the piston to thereby reduce a rotational moment about a center of the eccentric portion of the shaft, which rotational moment acts on the piston in a direction of rotation of the shaft, thus making it possible to reduce a sliding loss that is generated by a reciprocating motion of a vane in a vane groove.

Rotary compressor

Growing community of inventors

Shiga, Japan

Daisuke Funakoshi