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

Claim 0:
1. A system for cooling a hermetic motor, comprising:
a motor cooling refrigerant flow path configured to direct refrigerant from a condenser disposed along a refrigerant loop to the hermetic motor, and from the hermetic motor back to the refrigerant loop;
a housing of the hermetic motor disposed along the motor cooling refrigerant flow path and configured to receive the refrigerant from the condenser, wherein the housing of the hermetic motor comprises a first annulus formed therein and surrounding at least a first portion of a stator of the hermetic motor and a second annulus formed therein and surrounding at least a second portion of the stator, wherein the housing is configured to direct a first flow of the refrigerant into the first annulus and to direct a second flow of the refrigerant into the second annulus; and
a sleeve disposed between the stator and the housing, wherein the first annulus is fluidly separate from the second annulus via a seal disposed between the housing and the sleeve and between the first annulus and the second annulus, wherein the sleeve comprises a plurality of openings formed therein, wherein the plurality of openings is configured to direct the first flow of the refrigerant from the first annulus toward the stator to directly contact the stator and then flow directly into a cavity of the housing of the hermetic motor, wherein each opening of the plurality of openings extends from the first annulus and through the sleeve, and wherein the housing of the hermetic motor comprises an outlet configured to direct the first flow of the refrigerant from the cavity of the housing toward an evaporator disposed along the refrigerant loop.