Kabushiki Kaisha Toyota Jidoshokki

Kabushiki Kaisha Toyota Chuo Kenkyusho

Etsuko Hori

Yasuhiro Kondoh

Takuro Yamashita

Yuya Hattori

Takumi Maeda

Takayuki Ota

Tatsunori Tomota

Takahiro Moroi

Masakazu Obayashi

Naofumi Kimura

Yoshio Kimoto

Noritaka Nishimori

Kosaku Tozawa

Ryou Masuda

Kazuki Shibata

Hideyuki Suzuki

Kimihiro Fukawa

Yu Nozawa

A scroll compressor is provided. An orbiting angle of the orbiting scroll when the compression chamber is formed and compression of fluid is initiated is referred to as an orbiting initiation angle. An orbiting angle of the orbiting scroll when the compression of the fluid is completed is referred to as an orbiting termination angle. An orbiting angle of the orbiting scroll when an end of the orbiting spiral wall initiates contact with the arcuate portion of the fixed spiral wall before compression is completed is referred to as a distal end contact initiation angle. The formation point distance reaches a minimum value at least at one of a first orbiting angle or a second orbiting angle.

Scroll compressor

A scroll compressor includes a fixed scroll and an orbiting scroll. An orbiting angle of the orbiting scroll when a compression chamber is formed and compression of fluid is initiated is referred to as an orbiting initiation angle. An orbiting angle of the orbiting scroll when the compression of the fluid is terminated is referred to as an orbiting termination angle. An orbiting angle of the orbiting scroll when an end of the orbiting spiral wall initiates contact with an arcuate portion of the fixed spiral wall is referred to as a distal end contact initiation angle. The formation point distance is a peak in at least one of orbiting angles obtained by subtracting integer multiples of 360&#xb0; from an orbiting angle in a range from the distal end contact initiation angle to the orbiting termination angle.

The present invention provides a variable displacement swash plate type compressor that reduces wear of cylinder bores and the amount of blow-by gas. Each piston of the compressor has a piston main body, which has a distal portion located at an end corresponding to the compression chamber. A tapering portion and an arcuate portion are formed in the distal portion. The arcuate portion is continuous with an end of the tapering portion that is closer to the compression chamber. The tapering portion and the arcuate portion each have a diameter that increases toward the skirt. The tapering portion has a tapering angle that is in a range from 0.45 degrees to 1.5 degrees. The distance between the distal end of the piston main body and a starting point of the tapering portion on an end closer to the skirt is set in a range from 1.5 mm to 5.0 mm.

Variable displacement swash plate type compressor

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Nagakute, Japan

Etsuko Hori