| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a refrigerator having a compression mechanism capable of getting out of a surging state by a simple constitution. <P>SOLUTION: The refrigerator has the compression mechanism 2 compressing a refrigerant of a suction space S3 and a refrigerant passage connecting a discharge opening 22 and the suction space S3 and making the refrigerant discharged from the compression mechanism 2 flow to the suction space S3. The compression mechanism 2 has a compression section 24, a motor 25 driving the compression section 24 via a rotating shaft 26, a radial magnetic bearing 27 rotatably supporting the rotating shaft 26 in a non-contact manner, a motor casing 32 to which the refrigerant flowing in the refrigerant passage is supplied, second bypass piping 81 making the refrigerant in the motor casing 32 flow to the suction space S3, and an opening/closing mechanism 82 changed from a closed condition for blocking the flow-in of the refrigerant in the motor casing 32 into the suction space S3 to an opened condition for making the refrigerant flowing in the motor casing 32 flow into the suction space S3 when the heat generation quantity of the radial magnetic bearing 27 exceeds a predetermined quantity. <P>COPYRIGHT: (C)2013,JPO&INPIT |
