Electric fluid pump
First Claim
1. An electric fluid pump comprising:
- an upper housing having a fluid inlet and outlet;
an impeller seated within said upper housing for pumping fluid between said inlet and said outlet, said impeller including at least one magnet secured thereto;
a lower housing for mating with said upper housing, said lower housing having an upper wall for closing said upper housing and a shaft extending from said upper wall for rotatably supporting said impeller;
a stator seated within said lower housing and spaced from said impeller by said upper wall, said stator including a plurality of pillars supporting a winding of coils for producing a magnetic field to energize said magnet and rotate said impeller, and a plurality of top plates covering each of said coils and spaced apart by a predetermined gap for maintaining the magnetic field between said stator and said impeller; and
an end cap for closing said stator within said lower housing.
1 Assignment
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Accused Products
Abstract
An electric fluid pump includes an upper housing having a fluid inlet and outlet. An impeller is seated within the upper housing for pumping fluid between the inlet and the outlet. The impeller includes at least one magnet secured thereto. A lower housing mates with the upper housing. The lower housing has an upper wall for closing the upper housing and a shaft extending from the upper wall for rotatably supporting the impeller. A stator is seated within the lower housing and spaced from the impeller by the upper wall. The stator includes a plurality of pillars supporting a winding of coils for producing a magnetic field to energize the magnet and rotate the impeller, and a plurality of top plates covering each of the coils and spaced apart by a predetermined gap for maintaining the magnetic field between the stator and the impeller. An end cap closes the stator within the lower housing.
36 Citations
12 Claims
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1. An electric fluid pump comprising:
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an upper housing having a fluid inlet and outlet;
an impeller seated within said upper housing for pumping fluid between said inlet and said outlet, said impeller including at least one magnet secured thereto;
a lower housing for mating with said upper housing, said lower housing having an upper wall for closing said upper housing and a shaft extending from said upper wall for rotatably supporting said impeller;
a stator seated within said lower housing and spaced from said impeller by said upper wall, said stator including a plurality of pillars supporting a winding of coils for producing a magnetic field to energize said magnet and rotate said impeller, and a plurality of top plates covering each of said coils and spaced apart by a predetermined gap for maintaining the magnetic field between said stator and said impeller; and
an end cap for closing said stator within said lower housing. - View Dependent Claims (9, 10, 11)
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2. An electric fluid pump as set forth in claim 2 wherein each of said top plates of said stator includes bevelled ends for defining tapered gaps between adjacent top plates to control said magnetic field between said stator and said impeller.
- 3. An electric fluid pump as set forth in claim 3 wherein said stator includes a toroid plate for supporting each of said pillars.
Specification