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US 2022/0178593 A1Published application
Motor cooling return through hollow shaft
AssigneeDanfoss A/S
InventorWilliam Turner Thornton
Life of this patent
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Abstract
This disclosure relates to a compressor having a shaft, wherein the shaft is hollow to define a fluid passage extending along the shaft and a motor arranged along the shaft. A motor cooling line is configured to convey a cooling fluid to the motor, wherein the motor cooling line is fluidly connected to the fluid passage. The compressor may be a refrigerant compressor used in a heating, ventilation, and air conditioning (HVAC) chiller system.
Claims20
A refrigerant compressor, comprising:
- a shaft, wherein the shaft is hollow to define a fluid passage extending along the shaft;
- a motor arranged along the shaft;
- and
- a motor cooling line configured to convey a cooling fluid to the motor, wherein the motor cooling line is fluidly connected to the fluid passage.
1 more element
A refrigerant system comprising:
- a main refrigerant loop including a compressor, a condenser, an evaporator, and an expansion device, wherein the compressor includes:
- a compression stage arranged along a shaft, wherein the shaft is hollow to define a fluid passage extending along the shaft;
- a motor arranged along the shaft and configured to drive the compression stage;
- and
- a motor cooling line configured to convey a cooling fluid to the motor, wherein the motor cooling line is fluidly connected to the fluid passage.
2 more elements
Dependencies are inferred from the claim text.