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US 8,541,914 B2Granted
Liquid cooled electrical machine
AssigneeControlled Power Technologies, Ltd.
InventorsStephen Knight, Mike Dowsett, Toby Heason
Life of this patent
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Abstract
Flow control apparatus for an electrical machine and comprising an arrangement of shaped chambers and passages for conveying a liquid coolant. The rate of heat transfer from certain portions of the machine to the coolant is determined by the varying velocity of the liquid through the chambers, resulting in a generally uniform cooling of those portions of the machine.
Claims6
A flow control apparatus for an electrical machine and comprising:
- a first wall and a second wall, the second wall being inclined with respect to the first wall so as to define a tapered first chamber between the first and second walls, the first chamber including an entrance aperture and an exit aperture wherein;
- in use the taper causes the velocity of a liquid in the first chamber to be varied as the liquid is conveyed between the entrance aperture and the exit aperture, such that a transfer of thermal energy from a heat source to the liquid via the first wall is substantially uniform between the entrance aperture and the exit aperture.
Dependencies are inferred from the claim text.