Mitsubishi Heavy Industries Limited

Hirohumi Hirata

Makoto Takeuchi

Takahide Ito

Takuma Yamashita

Keita Kitaguchi

Kazuhide Watanabe

Katsuhiro Fujita

Takayuki Kuwahara

Hiroshi Yamazaki

Tomohisa Moro

Masahiro Ohta

Tetuzou Ukai

Tetsuzo Ukai

Provided is a co-rotating scroll compressor comprising a synchronous drive mechanism that can achieve a long life. The compressor comprises a driving side scroll member () driven to rotate about a driving side rotation axis CL, a driven side scroll member () driven to rotate about a driven side rotation axis CL, a hollowed drive shaft () that is connected to the driving side scroll member (), and driven by a motor () to rotate, and a driven shaft () that is disposed inside the drive shaft (), and has one end connected to the drive shaft () via a first flexible coupling () and the other end connected to the driven side scroll member () via a second flexible coupling ().

Co-rotating scroll compressor and assembly method therefor

The present invention provides a co-rotating scroll compressor that can inhibit leakage of lubricant supplied to a synchronous drive mechanism. A co-rotating scroll compressor includes a drive-side plateplaced between a driving scroll memberand a motorat a predetermined distance from the driving scroll memberin a direction of a drive-side rotation axis CL. The drive-side plateincludes a shaft portionfixed to a driving shaftof the motorand a fixing portionfixed to an outer periphery of the driving scroll member, and a synchronous drive mechanism made up of a needle bearingand a pinis placed between the drive-side plateand driving scroll member

Co-rotating scroll compressor

An object is to provide a scroll compressor capable of preventing degradation in performance and the occurrence of abnormal noise due to a torsional moment applied to an orbiting scroll, by utilizing the structural advantages of so-called stepped scroll compressors. In a so-called stepped scroll compressor (), in a pair of compression chambers () arranged in a point-symmetrical configuration among a plurality of compression chambers (), the volume Vof the compression chamber () formed on the ventral-surface side of the fixed spiral wrap (B) of the fixed scroll () when intake is cut off and the volume Vof the compression chamber () formed on the ventral-surface side of the orbiting spiral wrap (B) of the orbiting scroll () are different from each other.

Scroll compressor with stepped spiral wraps

In a scroll compressor configured to be capable of three-dimensional compression in a circumferential direction and a height direction of spiral wraps, in which top surfaces and bottom surfaces of spiral wraps (B andB) are provided with step portions (E andE) and the wrap height on the outer peripheral side of the step portion is made higher than the wrap height on the inner peripheral side, back-pressure introducing portions (and) where gaps between the back surfaces at step-portion ends of tip seals and groove bottom surfaces of tip seal grooves are made larger than a gap at the other portion are formed between the step-portion ends of tip seals (and) provided on top surfaces (G andG) on the outer peripheral side of the spiral wraps and tip seal grooves (L andL) to which the tip seals are fitted.

Scroll compressor for preventing performance deterioration and variation due to gas leakage

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Tokyo, Japan

Hirohumi Hirata