| 主权项 |
1. A method of operating a reciprocating compressor defining two or more capacity levels, the reciprocating compressor comprising at least two cylinders and at least two unloaders, each unloader being capable of operating at least one of the cylinders to be in an idle mode or in an active mode, wherein at least some of the capacity levels of the reciprocating compressor are obtainable by two or more setting combinations of the unloaders, the method comprising the steps of:
selecting an effective capacity to be delivered by the reciprocating compressor, selecting a first sequence of capacity levels of the reciprocating compressor, said first sequence providing the selected effective capacity, for each of the capacity levels being used in the first sequence, selecting a second sequence of setting combinations of the unloaders which obtain the capacity level, at least one of said second sequences comprising two or more different setting combinations, defining a final sequence of setting combinations of the unloaders, based on the first sequence of capacity levels and each of the second sequences of setting combinations of the unloaders, in such a manner that:
the capacity levels provided by the setting combinations of the final sequence provides the capacity levels of the first sequence of capacity levels, andfor each of the capacity levels, the final sequence provides the setting combinations of the corresponding second sequence of setting combinations of the unloaders, and operating the reciprocating compressor in accordance with the final sequence. |
