Matsushita Refrigeration Company

Panasonic Corporation

Panasonic Appliances Refrigeration Devices Singapore

Seigo Yanase

Akira Inoue

Kiwamu Watanabe

Hidenori Kobayashi

Ikutomo Umeoka

Takahide Nagao

Hiroshi Sasano

Junichiro Yabiki

Tatsuyuki Iizuka

Atsushi Naruse

A closed compressor is provided with a flexible oil fence, of which a fixed portion as one end is fixed onto an upper surface of a cylinder between a shaft and a cylinder head and a free end as the other end extends toward an upper inner surface of a closed container. According to this configuration, a collision sound can be prevented from being generated even when the oil fence collides with the upper inner surface of the closed container and hot oil can be prevented from flowing along a surface of suction muffler.

Closed compressor and refrigeration device using the same

In a sealed compressor, electrically-operated element () and compressive element () driven by electrically-operated element () are housed in the inside of sealed container (). Compressive element () includes shaft () formed of main shaft () and eccentric shaft (), and cylinder block () having; bearing () which pivotally supports main shaft () of shaft (); and cylinder (). Further, the compressive element () includes piston () which is movable in the cylinder () in a reciprocating manner, and connecting portion () which connects eccentric shaft () and piston () to each other. Electrically-operated element () is formed of an outer-rotor-type motor which includes stator (), and rotor () which is disposed coaxially with stator () so as to surround an outer periphery of stator (). Further, non-sliding portion () is provided between main shaft () and bearing (), and stator () is fixed to outer peripheral portion () of bearing () which corresponds to non-sliding portion ().

Sealed compressor and refrigeration device

A suction muffler receives low-temperature refrigerant gas discharged into a hermetic container from a suction pipe by a gas catcher, and feeds the gas to a compressor. The lower end of an opening of the gas catcher is located at a position lower than the lower end of an orifice of the suction pipe so as to catch the refrigerant gas falling obliquely downward inside the hermetic container.

Compressor

A hermetic electric compressor including sealed container and coil spring provided for elastically supporting electric compression element housed in sealed container. A consideration has been made to avoid the coincidence in the resonance frequency between coil spring mounted with electric compression element and mechanical vibration caused by electric compression element, or a cavity formed in space. By so doing, creation of a resonation with coil spring is suppressed, and noises and vibrations with the hermetic electric compressors are reduced.

Hermetic electric compressor and refrigeration unit including non-resonating support structure for the compressor

A closed motor-driven compressor includes a closed vessel containing a lubricating oil collected in a bottom portion thereof, a compression section accommodated in the closed vessel, and a motor section accommodated in the closed vessel for driving the compression section. The compression section includes a crankshaft driven by the motor section and having a lower end submerged in the lubricating oil, and a block for rotatably supporting the crankshaft. The block has a cylinder formed therewith and having an open end. The block also has a rib formed therewith, a generally flat shoulder portion formed on one side of the cylinder, and a leg formed below the generally flat shoulder portion. The compression section also includes a cylinder head secured to the rib for covering the open end of the cylinder. An oil guide is formed with the block for guiding to the bottom portion of the closed vessel a lubricating oil that is sucked up from the lower end of the crankshaft, caused to spout out from the upper end of the crankshaft, and collected on the generally flat shoulder portion. The oil guide prevent the oil from dropping on and flowing over a suction muffler disposed below the rib, and also prevents the oil from dropping directly on the bottom portion of the closed vessel.

Hermetic compressor

A sealed compressor for use in a refrigerator includes a sealed housing having an interior communicated to the outside of the sealed housing through a discharge tube, a compressor element accommodated within the sealed housing, an electric element accommodated within the sealed housing for driving the compressor element, and a coupling tube fluid-connecting the compressor element and the discharge tube within the sealed housing. To avoid a resonant motion of the coupling tube which would otherwise generate obnoxious noise, an inverter controller is employed to allow the electric element to be operated at one of a plurality of frequencies other than the resonance frequency of the coupling tube.

Growing community of inventors

Kanagawa, Japan

Seigo Yanase