| 摘要 |
PURPOSE:To enable variable control of a discharge volume, by a method wherein springs made of a shape memory alloy are located in parallel to each other between a vane bottom part and a vane groove bottom part, and when temperature around the a vane is brought into an abnormal state, the vane is retracted in the direction of the center of a rotor to bring a compressor into a non-load state. CONSTITUTION:Springs 19 made of a shape memory alloy, the length of which is contracted when temperature is increased to higher than a given value, are located in parallel to each other between the bottom part of a vane 17 of a vane compressor and a shaft 12 positioned to a vane groove bottom part formed in a rotor 11. When temperature around the vane is brought into an abnormal state, the springs 19 are contracted to retract the vane in the direction of the center of the rotor to bring a compressor into a no-load state. A change in properties of the spring made of the shape memory alloy enables arbitrary setting of volume control properties of a compressor.
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