Matsushita Electric Industrial Co., Ltd.

Panasonic Intellectual Property Management Co., Ltd.

Panasonic Corporation

Osamu Aiba

Shuichi Yamamoto

Sadao Kawahara

Michio Yamamura

Manabu Sakai

Yoshinori Kojima

Shigeru Muramatsu

Jiro Yuda

Mototaka Esumi

Masahiro Tsubokawa

Takeshi Hashimoto

Toshiharu Yasu

Takashi Morimoto

Atsushi Sakuda

Hiroyuki Kawano

Yusuke Imai

Yoshiyuki Futagami

Shozo Hase

Hideto Oka

Hideo Hirano

Taisei Kohayakawa

Tatsuya Nakamoto

Yukihiro Fujiwara

Shiro Maeda

Yoshiharu Takeuchi

Shiho Furuya

Akinori Fukuda

Mitsuru Kurimoto

Takeshi Hiratsuka

According to a compressor of the present invention, the compressor further comprises an oil separating mechanismwhich separates oil from the refrigerant gas discharged from the compressing mechanism, the oil separating mechanismincludes a cylindrical spacein which the refrigerant gas orbits, an inflow portionfor flowing the refrigerant gas discharged from the compressing mechanisminto the cylindrical space, a sending-out portfor sending out, from the cylindrical spaceto the one container space, the refrigerant gas from which the oil is separated, and an exhaust portfor discharging the separated oil and a portion of the refrigerant gas from the cylindrical space, and a center of the sending-out portis deviated in a direction opposite from the inflow portionfrom a center axis of the cylindrical space

Compressor

According to a compressor of the present invention, the compressor further comprises an oil separating mechanismwhich separates oil from the refrigerant gas discharged from the compressing mechanism, the oil separating mechanismincludes a cylindrical spacein which the refrigerant gas orbits, an inflow portionfor flowing the refrigerant gas discharged from the compressing mechanisminto the cylindrical space, a sending-out portfor sending out, from the cylindrical spaceto the one container space, the refrigerant gas from which the oil is separated, and an exhaust portfor discharging the separated oil from the cylindrical spaceinto the other container space. According to this configuration, efficiency of the electric motoris enhanced, volumetric efficiency is enhanced, and low oil circulation is realized.

Compressor with oil separating mechanism

Impulsive sound of an Oldham ring is reduced and a driving noise of a scroll compressor is prevented from increasing. When a width of the key of the Oldham ring made of iron-based material is defined as t and a width of the orbiting-side key groove in the back surface of the surface plate of the orbiting scroll made of aluminum-based material and a width of the fixed-side key groove of the main bearing member made of aluminum-based material on the side of a thrust surface are defines as s, a gap d generated at s&#x2212;t with respect to a key pitch L of the Oldham ring I set in a range of (6&#xd7;10)&#x2266;d/L&#x2266;(3.5&#xd7;10). With this, even if the key of the Oldham ring vibrates in the key groove, a collision force against the key groove is weakened, impulsive sound of the Oldham ring becomes small, and a driving noise of the scroll compressor is can be reduced.

Scroll compressor with reduced oldham ring noise

The present invention provides a hermetic or open compressor for hydrocarbon refrigerant having high reliability. According to the present invention, in the compressor using hydrocarbon as refrigerant, synthetic oil such as polyalkylene glycol oil, ester oil or ether oil is used as freezer oil. Sliding member of the compressor includes both a portion made of aluminum material and a portion made of iron material. Therefore, it is possible to realize a compressor having excellent wear resistance and high reliability.

Hermetic compressor and open compressor

A crankshaft directly connected to an electric motor and operably connected to a drive load is supported at two locations with bearings that are respectively subject to different amount of bearing loads. A resilient member is interposed between the inner race of one or both of the bearings and the crankshaft for applying an axial pre-load to the bearings. The weight of the crankshaft and the rotor, and/or a magnetic attractive force generated in the electric motor is/are applied to the bearing as an axial pre-load in addition to the pre-load by the resilient member.

Method and apparatus for applying pre-load to the bearing structure of a drive shaft that is directly driven by an electric motor

A vane of a compressor is made of solid phase sintering material of which a sintering density is not less than 7.2g/cm.sup.3 and a hollow rate is not more than 10%, and to which CrN phase is adhered through a PVD process. A roller of the compressor is made of hardened and tempered material having a hardness equal to cast iron FC300 (specified by JIS). The roller may be made of hardened and tempered material including at least one of Ni, Cr and Mo, and having a hardness equal to cast iron FC300. The vane and roller are combined, so that a sliding section having excellent abrasion-resistance can be constructed. As a result, a rotary compressor, which employs R134a or R22 coolant as well as HFC system or HC system coolant both of which are R22 substitutes, having extremely high reliability can be realized.

Rotary compressor

In a sealed-type scroll compressor having a stationary scroll member and an orbiting scroll member, the stationary scroll member is fixed after rotating it in an orbiting direction of the orbiting scroll member by a predetermined angle from a phase angle position where a possible orbiting radius between both scroll members is made maximum at the temperature before driving the scroll compressor.

Sealed-type scroll compressor and assembling method therefor

Sealed-type scroll compressor with relatively shifted scrolls based on

In a sealed electric scroll compressor, lubricating oil is collected in an oil collection pan mounted under a compression mechanism after the compression mechanism is lubricated thereby, the lubricating oil collected in the oil collection pan is discharged from a small hole at the side of the oil collection pan which is located remote from a delivery pipe for delivering a high-pressure refrigerant gas outward from a sealed container of the sealed electric compressor. The high-pressure refrigerant gas flows between the inner wall of the sealed container and a vertical cut part formed on the circumference of a stator of an electric motor.

Hermetic scroll compressor having a pumped fluid motor cooling means and

Scroll compressor having recesses on the scroll wraps

Starting method for scroll-type compressor

Growing community of inventors

Kusatsu, Japan

Osamu Aiba