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US 12,736,058 B2Granted
Motor assembly for an appliance such as a vacuum cleaner and a vacuum cleaner having same
AssigneeOmachron Intellectual Property Inc.
InventorWayne Ernest Conrad
Life of this patent
Estimating the term…
Abstract
A motor which may be used within an appliance. The motor may include a fixed stator with a plurality of stator poles provided by electromagnets (e.g. wound coils) and at least one rotor. The activation of the rotor poles (e.g. the number of active rotor poles and/or the rotor pole switching frequency) can be controlled independent of the activation of the stator poles (e.g. the number of active stator poles and/or stator pole switching frequency). The motor may include multiple rotors connected in sequence to allow for increased fan speeds with relatively decreased dB level as well as a decrease in the size of the fan assembly.
Claims20
A motor comprising:
- a stator comprising a plurality of circumferentially spaced stator poles and a plurality of stator coils, the plurality of stator coils comprising a plurality of stator pole coils corresponding to the plurality of stator poles;
- a first rotor comprising a plurality of circumferentially spaced first rotor poles and a plurality of first rotor coils, the plurality of first rotor coils comprising a plurality of first rotor pole coils corresponding to the plurality of first rotor poles, wherein the plurality of first rotor poles are positioned in a facing arrangement with the plurality of stator poles;
- a second rotor comprising a plurality of circumferentially spaced second rotor poles and a plurality of second rotor coils, the plurality of second rotor coils comprising a plurality of second rotor pole coils corresponding to the plurality of second rotor poles, wherein the plurality of second rotor poles are positioned in a facing arrangement with a plurality of second stator poles provided by a rotatable second stator;
- and
- at least one controller, the at least one controller operable to independently control activation of the stator poles and the first rotor poles to thereby induce rotation of the motor, wherein the at least one controller is operable to control the provision of a rotor control signal to the first rotor, wherein the rotor control signal is defined to control the activation of the first rotor poles;
- wherein rotation of the second stator is driven by rotation of the first rotor.
3 more elements
A motor comprising:
- a stator comprising a plurality of circumferentially spaced stator poles and a plurality of stator coils, the plurality of stator coils comprising a plurality of stator pole coils corresponding to the plurality of stator poles;
- a first rotor comprising a plurality of circumferentially spaced first rotor poles and a plurality of first rotor coils, the plurality of first rotor coils comprising a plurality of first rotor pole coils corresponding to the plurality of first rotor poles, wherein the plurality of first rotor poles are positioned in a facing arrangement with the plurality of stator poles;
- a second rotor, wherein the first rotor is positioned between the stator and the second rotor, and the first rotor is operable to couple second rotor power to the second rotor, wherein the second rotor power is received from the stator along with the first rotor power;
- and
- at least one controller, the at least one controller operable to independently control activation of the stator poles and the first rotor poles to thereby induce rotation of the motor, wherein the at least one controller is operable to control the provision of a rotor control signal to the first rotor, wherein the rotor control signal is defined to control the activation of the first rotor poles.
2 more elements
A motor comprising:
- a first stator comprising a plurality of circumferentially spaced first stator coils, the plurality of first stator coils defining a plurality of first stator poles, wherein the first stator is fixed;
- a first rotor comprising a plurality of circumferentially spaced first rotor coils, the plurality of first rotor coils defining a plurality of first rotor poles, wherein the plurality of first rotor poles are positioned in a facing arrangement with the plurality of first stator poles;
- a movable second stator drivingly connected to the first rotor, the second stator comprising a plurality of circumferentially spaced second stator coils, the plurality of second stator coils defining a plurality of second stator poles, wherein rotation of the second stator is driven by rotation of the first rotor;
- and
- a second rotor comprising a plurality of circumferentially spaced second rotor coils, the plurality of second rotor coils defining a plurality of second rotor poles, wherein the plurality of second rotor poles are positioned in a facing arrangement with the plurality of second stator poles.
2 more elements
Dependencies are inferred from the claim text.