Patent ID: 11953006
Assignee: TYCO FIRE & SECURITY GMBH
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 10:
11. The control method for operating the screw compressor of claim 10, wherein:
an actual internal volume ratio reached in step c1 is equal to the working internal volume ratio parameter (Vi), and the working internal volume ratio parameter (Vi) of the screw compressor is between an actual minimum internal volume ratio (Vimin) and an actual maximum internal volume ratio (Vimax1), and
the actual internal volume ratio reached in step c2 is determined based on the predetermined working suction capacity (R), and the working internal volume ratio parameter (Vi) of the screw compressor is between the actual maximum internal volume ratio (Vimax1) and a virtual maximum internal volume ratio (Vimax2).