Compressor system

Abstract

A compressor system includes a compressor that includes an impeller configured to compress a working fluid by rotation. The compressor includes a housing in which an inflow flow path and a discharge flow path are formed, a guide vane that is provided in the inflow flow path and has an angle that is changeable, a diffuser vane that is provided in the discharge flow path and has an angle that is changeable, and a control unit configured to control angles of the guide vane and the diffuser vane. The control unit controls an angle of at least one of the guide vane and the diffuser vane based on a requested PQ characteristic value and a rotational speed of the impeller.

1 . A compressor system comprising:
 a motor including a rotor configured to rotate about an axis and a stator disposed on an outer circumference side of the rotor; and   a compressor including an impeller rotating together with the rotor and compressing a working fluid,   wherein the compressor includes   a housing in which an inflow flow path through which a working fluid flows into the impeller and a discharge flow path through which a working fluid pressure-fed by the impeller circulates are formed;   a guide vane provided in the inflow flow path and having an angle that is changeable;   a diffuser vane provided in the discharge flow path and having an angle that is changeable; and   a control unit configured to control angles of the guide vane and the diffuser vane, and   wherein the control unit controls an angle of the guide vane based on a requested PQ characteristic value that is a requested pressure and flow rate value and a rotational speed of the impeller.   
     
     
         2 . The compressor system according to  claim 1 ,
 wherein, when a rotational speed of the impeller is less than a predetermined reference, the control unit controls an angle of the guide vane so that a relative angle with respect to a direction in which the working fluid flowing into the impeller from the inflow flow path flows becomes smaller.   
     
     
         3 . (canceled) 
     
     
         4 . The compressor system according to  claim 1 ,
 wherein, when the requested PQ characteristic value satisfies a requirement of a predetermined reference, the control unit controls an angle of the guide vane so that a relative angle with respect to a direction in which the working fluid flowing into the impeller from the inflow flow path flows becomes smaller.   
     
     
         5 . (canceled) 
     
     
         6 . A compressor system comprising:
 a motor including a rotor configured to rotate about an axis and a stator disposed on an outer circumference side of the rotor; and   a compressor including an impeller rotating together with the rotor and compressing a working fluid,   wherein the compressor includes   a housing in which an inflow flow path through which a working fluid flows into the impeller and a discharge flow path through which a working fluid pressure-fed by the impeller circulates are formed;   a guide vane provided in the inflow flow path and having an angle that is changeable;   a diffuser vane provided in the discharge flow path and having an angle that is changeable; and   a control unit configured to control angles of the guide vane and the diffuser vane, and   wherein the control unit controls an angle of at least one of the guide vane and the diffuser vane based on a requested PQ characteristic value that is a requested pressure and flow rate value and a rotational speed of the impeller, and   wherein, when a rotational speed of the impeller is less than a predetermined reference, the control unit controls an angle of the guide vane so that a relative angle with respect to a direction in which the working fluid flowing into the impeller from the inflow flow path flows becomes smaller.