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US 9,413,208 B2Granted
Enhanced cooling of enclosed air cooled high power motors
AssigneeHamilton Sundstrand Corporation
InventorDebabrata Pal
Life of this patent
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Abstract
A fully enclosed fan motor assembly includes a motor housing. A stator is located radially inward from the motor housing. A rotor is located radially inward from the stator, and the gap in between the rotor and stator defines a rotor stator gap. A shaft is located radially inward from the rotor. A fin portion extending radially outward from the shaft is used to dissipate heat from the rotor to air drawn through the rotor stator gap and over the fin portion.
Claims10
A fan motor assembly comprising:
- a motor housing,
- a stator located radially inward from the motor housing;
- a rotor located radially inward from the stator, the stator and the rotor defining a rotor stator gap there between, wherein air is drawn through the rotor stator gap;
- a shaft located radially inward from and connected to the rotor;
- a heat exchanger mounted on, connected directly to, and extending radially outward from the shaft, the heat exchanger is configured to transfer heat from the heat exchanger to the air drawn through the rotor stator gap;
- and
- a plurality of cooling channels disposed between a radially outer surface of the motor housing and a radially inner surface of the motor housing, the cooling channels extending in an axial direction parallel to the shaft, wherein the cooling channels are fluidly connected to the rotor stator gap.
4 more elements
Dependencies are inferred from the claim text.