| 摘要 |
PURPOSE:To prevent the increase of the compression ratio and the abnormal delivery temperature rise, by varying the volume efficiency in reverse proportion with the rotarion thereby releasing the lowering of the low side pressure. CONSTITUTION:Upon the increase of the rotation of the compressor, the terminal voltage of an electromagnetic coil 20 will lower to reduce the attraction force of a sliding member 21 thereby the sliding member 21 is moved by the force of a spring 22 to the suction path side 17. Consequently the sliding member 21 is further projected into the suction path 17 thus to limit the flow of the refrigenrant. As a result the amount of the refrigerant to be sucked through a suction port 16 into the compression chamber 11 is reduced thus to reduce the amount of the refrigerant in the refrigerating cycle, thereby the volume efficiency is lowered and the compressor is operated substantially as a small exhaust conpressor. While when the rotation of the compressor is lowered, the sliding member 21 will not project into the suction path 17 thereby the flow of the refrigerant is quite same with that of the conventional compressor. Consequently the lowering of the pressur at the low pressure side is released and the increase of the compression ratio is prevented. |
