| 摘要 |
<p>A control valve accommodated in a variable displacement refrigerating compressor for an automobile climate control system for controlling a fluid communication between at least the crank chamber and the discharge chamber of the compressor. The valve has axially arranged pressure-sensing unit having a diaphragm (13), a valve unit (17, 23c) arranged so as to control a fluid communication of the passageway (23a) between the crank and discharge chambers of the compressor, a compensating unit having a balancing rod (18) compensating for the fluid-communication controlling operation of the valve unit (17, 23c) in relation to the crank-pressure (Pc) and the discharge pressure (Pd), and a compensation-stopping unit (19, 25) stopping the compensation operation of the compensating unit. The control valve permits the compressor to exhibit a sufficient refrigerating performance irrespective of the ambient temperature.</p> |
