Patent ID: 7540724

Claim:
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 in such a manner that a tip portion of the vane abuts 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 this vane has a curved surface constituted on the tip portion, and an inclined surface which rises from this curved surface at a predetermined inclination angle, a curvature radius of the curved surface is set to be constant in a whole region in which the tip portion abuts on one surface of the compression member, the inclination angle of the inclined surface with respect to the axial direction of the rotary shaft is set to be smaller than an angle at which one surface of the compression member crosses the rotary shaft, and assuming that a positional difference of the compression member between the top dead center and the bottom dead center in the axial direction of the rotary shaft is H, and an inner diameter of the compression member is D, an inclination angle θ of the inclined surface with respect to the axial direction of the rotary shaft is set to: θ<tan −1 (D/H).