| 摘要 |
PROBLEM TO BE SOLVED: To provide a change-over valve high in reliability at accelerated energy saving and low noise, provide a fluid compressor employing the change- over valve inside, and provide a heat pump type refrigeration cycle making the change-over of cooling/heating operations with the compressor employed. SOLUTION: A change-over valve S is equipped with a valve base 10 to be connected with plural gas flow paths, a slider 13 provided with a gas passage 24 making change-over of two gas flow paths so as to be communicated with each other out of the flow paths, a balance port 25 provided for the slider so as to communicate the gas flow paths with the external part of the slider, a pilot valve 15 opening/closing the balance port, and an actuator 16 capable of being normally/reversely rotated for actuating the pilot valve 15 and the slider.
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