| 摘要 |
A screw compressor (12) in a refrigeration chiller (10) includes one or more baffles (68, 80) disposed in the compressor housing (24) so as to intercept and redirect oil which may flow and/or be blown, under certain operating conditions, in an upstream direction against the stream of suction gas that flows into the compressor (12) from the evaporator (18). The baffles (68, 80 ) cause oil to be retained in the compressor (12) rather than being blown back to the system evaporator (18) to ensure that sufficient oil is available to the compressor (12) under all operating conditions and eliminates the need f or structure/apparatus in the evaporator (18) dedicated to returning such oil t o the compressor (12).
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