| 摘要 |
PURPOSE:To obtain a high efficient compressor suppressing an amount of eccentricity in a shaft and reducing an amount of leakage of compressed gas by providing a floating bush to be built between the shaft and a main bearing or a subbearing. CONSTITUTION:A floating bush 16 is built between a shaft 5 and a main bearing 8, while rings 17 and 18 are forced to be fitted to the main bearing 8 for preventing the floating bush 16 from falling off. By this constitution, the main bearing 8 or a subbearing 9 divides its clearance into two parts by the floating bush 16, decreasing virtual clearance ratio and an amount of eccentricity of the shaft 5. The constitution is obtained by the logical characteristic of a sliding bearing decreasing the eccentricity by reducing the clearance ratio. And as the result, performance of a compressor can be improved by reducing the leakage of compressed gas from a compression chamber to a suction chamber. |
