Valeo Thermal Systems Japan Corporation

Valeo Japan Co., Ltd.

Yoshihiro Adachi

Tomoyasu Takahashi

Takayuki Endo

Keiichi Kanesugi

A compressor that allows a discharge port to assume a large circumference and a large area at an exit end thereof so as to optimize the discharge resistance and the pressure-receiving area and assuring improved volumetric efficiency through reduced dead volume, includes a discharge port, an entrance end of which opens into a compression chamber and an exit end that is able to open and shut with a discharge valve. The discharge portis constituted with a recessed portionformed to achieve a predetermined depth from the exit end and a through portionhaving a smaller sectional area than the sectional area of the recessed portion. The through portionis formed so that its width measured along a direction perpendicular to the longitudinal direction of the discharge valve is greater than its width measured along the longitudinal direction of the discharge valve

Compressor

In a piston-type compressor in which a working fluid is taken in through an intake port is first compressed with pistons and is then let out through an outlet port, an axial hole ranging along the axial direction and a radial hole communicating with the axial hole and opening into a crankcase are formed within the shaft. Additionally, a first intake passage through which the working fluid having flowed in through the intake port is guided via the crankcase to the radial hole and the axial hole and a second intake passage through which the working fluid having flowed in through the intake port is guided to join the working fluid having been drawn into the first intake passage by bypassing the crankcase are formed in the compressor. The working fluid is taken into cylinders from the area where the first working fluid and the second working fluid join each other.

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Saitama, Japan

Yoshihiro Adachi