Spindle-motor driven pump system
First Claim
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1. A liquid pump for use with an electronic component cooling system comprising:
- a housing;
a DC brushless spindle-motor mounted to said housing, said motor comprising an at least one rare-earth magnet for rotating an outer hub around a stationary shaft;
an impeller rotationally constrained to said hub, said impeller contained within said housing;
said housing having a fluid inlet for receiving a supply of lower pressure fluid and for delivering said supply of lower pressure fluid to said impeller, wherein rotation of said impeller transforms said supply of lower pressure fluid to a supply of higher pressure fluid; and
said housing having a fluid exit for dispensing said supply of higher pressure fluid.
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Abstract
The present invention is a compact pump that is powered by a brushless DC spindle-motor, as used in disk drives and CD-ROM drives. A hard drive type spindle-motor is a brushless DC motor that is highly balanced, very reliable, available at low cost, and is capable of significant rotational speeds. According to the present invention, a spindle-motor is mounted to a pump housing and to an impeller within the housing. The spindle-motor rotates the impeller causing movement of a fluid. Preferably for spray cooling, the pump is a turbine pump.
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Citations
25 Claims
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1. A liquid pump for use with an electronic component cooling system comprising:
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a housing;
a DC brushless spindle-motor mounted to said housing, said motor comprising an at least one rare-earth magnet for rotating an outer hub around a stationary shaft;
an impeller rotationally constrained to said hub, said impeller contained within said housing;
said housing having a fluid inlet for receiving a supply of lower pressure fluid and for delivering said supply of lower pressure fluid to said impeller, wherein rotation of said impeller transforms said supply of lower pressure fluid to a supply of higher pressure fluid; and
said housing having a fluid exit for dispensing said supply of higher pressure fluid. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A fluid pump for use within a liquid cooling system comprising:
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an enclosure;
a DC brushless motor comprised of a stationary spindle, an at least one rare-earth magnet, and a hub for rotating about said stationary spindle, said stationary spindle fixed to said enclosure;
an impeller disk rotatably constrained to said hub of said motor;
said enclosure for housing said impeller disk including an inlet for providing a low pressure supply of fluid to said impeller disk;
wherein rotation of said impeller disk transforms said low pressure supply of fluid to a higher pressure supply of fluid; and
an exit in said housing for discharging said supply of higher pressure fluid. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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Specification