Patent ID: 11959483
Assignee: TRANE INTERNATIONAL INC.
Field: Thermal processes and apparatus (Mechanical engineering)
Classification: CPC F | IPC F

Claim 9:
10. A refrigeration circuit, comprising:
one or more compressors disposed upstream of a condenser;
the condenser disposed upstream of an expansion device;
the expansion device disposed upstream of an evaporator; and
an economizer fluidically connected to the one or more compressors,
the one or more compressors includes one compressor including:
a bore;
a rotor disposed within the bore;
a shaft supporting the rotor, the shaft extending in an axial direction;
a compressor inlet;
a compressor outlet;
a compression chamber defined between the bore and the rotor, wherein a working fluid in the compression chamber is compressed and flows from the compressor inlet to the compressor outlet; and
an injection port having a variable injection position along the axial direction,
wherein the variable injection position of the injection port is changed based on a working condition of the compressor,

wherein the compression chamber is fluidically connected to the economizer through the injection port.