| 摘要 |
PURPOSE: To prevent the abnormal increase of a pressure in an oil pressure chamber to exert an oil pressure on a delivery pressure introduction valve opened by means of an oil pressure. CONSTITUTION: Lubrication oil is delivered in an oil pressure chamber from a pump P. During normal operation of a compressor, an on-off actuating valve 72 is opened through energization and lubrication oil delivered in the oil pressure chamber is fed in an oil reservoir through a discharge passage 51. In which case, when a destroke state is produced, the on-off actuating valve 72 is closed, a pressure receiving plate 46 is pressed by lubrication oil detained in an oil pressure chamber and a delivery pressure introduction valve 61 is opened. As a result, a relatively high pressure refrigerant in a delivery port 34 is fed in a crank chamber 14 and the inclination angle of a swash plate 25 is decreased. Namely, the destroke state is produced. In which case, when a pressure in an oil pressure chamber attains a given value, the on-off actuating valve 72 is opened though it is in a non-energization state, and a pressure in the oil pressure chamber is prevented from being increased to an abnormal value. |
