VARIABLE CAPACITY SCREW COMPRESSOR AND METHOD

申请公布号：

KR20130129904(A)

申请号：

KR20137004156

申请日期：

2011.07.19

申请公布日期：

2013.11.29

申请人：

TRANE INTERNATIONAL INC.

发明人：

DORMAN DENNIS R.;SAULS JOHN R.

分类号：

F04C18/16;F04C28/08

主分类号：

F04C18/16

摘要：

A variable capacity screw compressor comprises a suction port, at least two screw rotors and a discharge port being configured in relation to a selected rotational speed that operates at least one screw rotor at an optimum peripheral velocity that is independent of a peripheral velocity of the at least one screw rotor at a synchronous motor rotational speed for a rated screw compressor capacity. A motor is configured to drive the at least one screw rotor at a rotational speed at a full-load capacity that is substantially greater than the synchronous motor rotational speed at the rated screw compressor capacity. A variable speed drive receives a command signal from a controller and generates a control signal that drives the motor at the selected rotational speed. A method for sizing at least two variable capacity screw compressors and a refrigeration chiller incorporating a variable capacity screw compressor are separately presented.