| 摘要 |
<p>A compressor which has a rotor (53) slidably provided with vanes (52); slidable vanes (52) provided in the rotor (53); a non-circular cylinder (50) containing the rotor (53) therein; side plates attached to the two side surfaces of the cylinder (50) to seal the sides surfaces of blade chambers (51-A), (51-B) formed by the vanes (52), the rotor (53) and the cylinder(50); suction holdes (56-A), (56-B); and discharge holes (57-A), (57-B). This construction suppresses the freezing capacity during high-speed driving by utilizing the suction loss when the pressure of a blade chamber is reduced to below the pressure of a coolant supply source during a suction stroke, the configuration is designed to vary in at least two stages so that the effective area of the passage from the suction hole within the blade chamber in the second half of the suction stroke is smaller than that in the first half, thereby obtaining an effective suppression effect on the freezing capacity during high-speed driving while maintaining low torque at low speeds and a high volumetric efficiency.</p> |
