Patent ID: 11885537
Assignee: COPELAND EUROPE GMBH
Field: Thermal processes and apparatus (Mechanical engineering)
Classification: CPC F | IPC F

Claim 8:
9. The method according to claim 7, wherein setting the opening degree of the economizer valve to a value calculated by using a combination of at least the first operation mode and the third operation mode comprises:
if the determined temperature of the refrigerant in the discharge line is below an eighth threshold, setting the opening degree of the economizer valve to a value calculated from the determined pressure of the refrigerant in the injection line and the superheat value;
if the determined temperature of the refrigerant in the discharge line is above the eighth threshold and below a ninth threshold, setting the opening degree of the economizer valve to a value calculated from the determined pressure of the refrigerant in the injection line, the determined temperature of the refrigerant in the discharge line and the superheat value; and
if the determined temperature of the refrigerant in the discharge line is above the ninth threshold, closing the economizer valve and stopping operation of the compressor.