| 摘要 |
<p>PURPOSE:To control slitely a fluctuation width of suction pressure in a total variable displacement region, by providing constitution such that an introducing part of detection pressure is obtained in a rear suction chamber and further a suction passage area is continuously changed by the axial directional displacement of a jacket, in a throttle part in a suction passage of reaching the rear suction chamber. CONSTITUTION:When a drive shaft 7 is rotated, a double-head piston 6 is reciprocated in bores 5a, 5b through a shoe 13 by integrally rotating and swiveling a swash plate 12. Then, feedback refrigerant gas is sucked to a compression chamber in front and rear sides to receive compressing operation. A control valve 70 is placed in a predetermined condition when a detection pressure, introduced through a pressure detecting pipe line (e), is in a high value with a large room-cooling load, and a high delivery pressure is supplied to a control pressure chamber 32 as a power pressure. Accordingly, a compressor is operated by the 100% displacement by holding the swash plate 12 at a maximum tilt angle. When the power pressure is decreased by advancing reduction of the room-cooling load, the compressor is placed in the minimum displacement in the point of time, the swash plate 12 is displaced to the minimum tilt angle, by decreasing a pressure of the control pressure chamber 32 by throttling action between a jacket pipe 8 and the second passage 27b.</p> |
