Patent ID: 11942851
Assignee: TYCO FIRE & SECURITY GMBH
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  F | IPC F  H

Claim 13:
14. A method for cooling a hermetic motor, comprising:
diverting a portion of a refrigerant flow exiting a condenser in a refrigerant loop toward a motor cooling refrigerant path;
directing the portion of the refrigerant flow along the motor cooling refrigerant path into a housing of the hermetic motor, wherein the hermetic motor is configured to drive a compressor disposed along the refrigerant loop;
directing a first flow of the portion of the refrigerant flow through a first annulus formed in the housing of the hermetic motor;
directing a second flow of the portion of the refrigerant flow through a second annulus formed in the housing of the hermetic motor;
directing the first flow of the portion of the refrigerant flow through a plurality of openings formed in a sleeve of the hermetic motor, wherein the first annulus and the second annulus are fluidly separate from one another via a seal disposed between the housing and the sleeve and between the first annulus and the second annulus; wherein the sleeve is positioned between the housing and a stator of the hermetic motor, such that the plurality of openings directs the first flow of the portion of the refrigerant flow from the first annulus toward the stator to directly contact the stator and then flow from the stator into a cavity of the housing of the hermetic motor, and wherein each opening of the plurality of openings extends from the first annulus and through the sleeve; and
directing the first flow of the portion of the refrigerant flow from the cavity of the housing of the hermetic motor back toward the refrigerant loop.