Kabushiki Kaisha Toshiba

Satoru Oikawa

Hirotsugu Sakata

Toshinobu Inoue

Takuya Hirayama

Masayuki Okuda

Akira Morishima

Tsugio Itami

Yutaka Sasahara

Katutoshi Kumashiro

In a scroll type compressor, a revolving scroll having a disc portion and a blade portion is engaged with a stationary scroll having a disc portion and a blade portion. A gas is introduced from the outer peripheral portions of these scrolls and compressed in a pair of compression chambers defined between the scrolls, and a compressed gas is discharged. A first inlet and a second inlet, which are connected by a communication path, are formed at positions corresponding to the compression chambers, where the gas is compressed. Release means is provided between one of the compression chambers and a gas suction unit. The release means returns part of the gas in one of the compression chambers directly to, and part of the gas in the other compression chamber via the first and second inlets, the communication path and the one of the compression chambers to, the gas suction unit simultaneously by equal degrees.

Scroll type compressor

Disclosed is a fluid compressor which comprises a closed case having an inlet for a fluid at one end thereof and an outlet for a fluid at the other, a cylinder fixed in the case, and a rotary member which orbits in and relatively to the cylinder, wherein the rotary member has a compression unit for compressing a fluid supplied into the closed case from the inlet thereof on the orbit movement of the rotary member, then discharging it outside from the outlet of the closed case.

Fluid compressor with spiral blade

A fluid scroll machine comprises a fluid mechanism including first and second spiral blades located in a frame to eccentrically rotate and a compression chamber defined by the spiral blades, and an Oldham's coupling movably supported by the frame and including a ring-shaped plate having one side facing the first spiral blade and an axis center, a pair of first projections projected from the one side of the ring-shaped plate, and a pair of second projections projected from the one side of the ring-shaped plate. The first spiral blade includes a pair of first guide passages extended in a same direction as a first radial direction of the ring-shaped plate and into which the first projections are fitted to slide in a first radial direction of the plate. The second spiral blade includes a pair of second guide passages extended in a same direction as a second radial direction of the ring-shaped plate and into which the second projections are fitted to slide in the second radial direction of the plate.

Fluid scroll machine with projection on one side of Oldham ring

A scroll-type compressor includes a hermetic case in which a compression section having a pair of spiral scrolls and a motor section for driving the compression section are arranged. The motor section has a rotating shaft coupled to the compression section. A flow passage is formed in the shaft and communicates at its one end with the compression chamber of the compression section and at its other end with a muffler chamber defined above the motor section. An operating fluid compressed in the compression chamber is guided into the muffler chamber through the flow passage, flows around the motor section, and then is discharged from the case.

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Fuji, Japan

Satoru Oikawa