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US 8,427,019 B2Granted
Systems and methods for cooling and lubrication of electric machines
AssigneeClean Wave Technologies, Inc.
InventorsRuldolph Garriga, Mike Kubic
Life of this patent
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Abstract
The invention provides systems and methods for cooling and lubrication of high power density electric machines with an enhanced fluid injection system. Multiple fluid flow passages may be provided within the electric machine, which may comprise a stator fluid flow pathway, a rotor fluid flow pathway, and a bearing fluid flow pathway. The fluid within the electric machine may be used to cool and/or lubricate internal components of the electric machine.
Claims24
An electric machine comprising:
- a rotor fixed to a rotatable shaft and supported by means of one or more bearings;
- a stator stationary in relation to the rotatable rotor and shaft with a gap between the rotor and the stator;
- a housing surrounding all or part of the machine;
- and
- a plurality of liquid flow passages within the machine, wherein the liquid flow passages include:
- one or more stator liquid flow pathways between the stator and the housing;
- one or more rotor liquid flow pathways along the rotatable shaft toward the rotor and stator;
- and
- one or more bearing liquid flow pathways contacting at least one bearing.
6 more elements
A method for cooling and lubricating an electric machine comprising:
- providing a rotor fixed to a rotatable shaft;
- providing a stator stationary in relation to the rotatable rotor and shaft with a gap between the rotor and the stator;
- providing a housing surrounding all or part of the machine;
- and
- providing a plurality of liquid flow passages within the machine, wherein the liquid flow passages include:
- one or more stator liquid flow pathways between the stator and the housing;
- one or more rotor liquid flow pathways along the rotatable shaft toward the rotor and stator;
- and
- one or more bearing liquid flow pathways contacting at least one bearing.
6 more elements
Dependencies are inferred from the claim text.