| 摘要 |
In screw compressors for fluids there is normally leakage of fluid axially through the rotor-shaft bearing assemblies at the high-pressure end of the casing housing the interacting rotors. To obviate or mitigate the resulting inefficiency in the operation of the compressor, and also reduce atmosphere pollution arising from the leakage, a fluid coupling is provided between said bearing assemblies and an additional fluid inlet opening in the compressor casing, said additional opening being positioned to communicate with a land of the rotor when the rotor is at or beyond rotor cut-off, so that fluid leaking from the compression chamber is recirculated to the compression chamber.
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