US 2006/0078441 A1Published application

Compressor

AssigneeSanyo Electric Co., Ltd.

InventorsHirotsugu Ogasawara, Takahiro Nishikawa, Akihiro Suda, Masayuki Hara

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Abstract

An object is to provide a highly efficient compressor at a low cost while reducing sliding losses of a vane and inhibiting a leakage from the vane and a compression member to improve a workability of the vane. The compressor comprises: the compression member whose upper surface (one surface) crossing an axial direction of a rotary shaft is inclined continuously between a top dead center and a bottom dead center and which is disposed in a cylinder to be rotated by the rotary shaft and which compresses a fluid sucked from a suction port to discharge the fluid via a discharge port; and a vane which is disposed between the suction port and the discharge port to abut on the upper surface (one surface) of the compression member and which partitions a compression space in the cylinder into a low pressure chamber and a high pressure chamber, and the upper surface of the compression member comprises: a flat surface constituted in a predetermined region centering on an intermediate point between the top dead center and the bottom dead center; and curved surfaces gradually approaching the top dead center and the bottom dead center continuously from the flat surface.

Claims5

Dependent claims

A compressor comprising:

a compression element comprising a cylinder in which a compression space is constituted;
a suction port and a discharge port which communicate with the compression space in the cylinder;
a compression member whose one surface crossing an axial direction of a rotary shaft is inclined continuously between a top dead center and a bottom dead center and which is disposed in the cylinder to be rotated by the rotary shaft and which compresses a fluid sucked from the suction port to discharge the fluid via the discharge port;
and
a vane which is disposed between the suction port and the discharge port to abut on one surface of the compression member and which partitions the compression space in the cylinder into a low pressure chamber and a high pressure chamber,
wherein one surface of the compression member comprises:
first curved surfaces constituted in predetermined regions centering on an intermediate point between the top dead center and the bottom dead center;
and second curved surfaces connecting the first curved surfaces to each other via the top dead center and the bottom dead center, and
a line connecting points having equal distances from a center of the rotary shaft in one surface of the compression member is formed into straight lines in the first curved surfaces, and formed into curves which gradually approach the top dead center and the bottom dead center in the second curved surfaces.

6 more elements

Dependencies are inferred from the claim text.