Motor
AssigneeLG Electronics Inc.
InventorsTaeyong Jung, Youngil Park, Haerim Yang, Hyeonho Ha
Life of this patent
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Abstract
A motor includes a rotary shaft having at least one spray hole for spraying a cooling fluid, a rotor installed on the rotary shaft, and a stator surrounding an outer circumference of the rotor, wherein the rotor includes a plurality of rotor blocks arranged on an outer circumference of the rotary shaft. Each of the rotor blocks may include a magnet installed at a rotor core and a cooling guide may be disposed between a pair of the plurality of rotor blocks and form a spray flow path for guiding a cooling fluid that has passed through the spray hole to be sprayed in a direction toward an inner circumference of the stator.
Claims19
A motor comprising:
- a rotary shaft having at least one spray hole configured for spraying a cooling fluid from a rotary shaft flow path in the rotary shaft;
- a rotor installed on the rotary shaft;
- and
- a stator surrounding an outer circumference of the rotor,
- wherein the rotor comprises:
- a plurality of rotor blocks arranged on an outer circumference of the rotary shaft and each of the rotor blocks including a magnet installed in a rotor core;
- and
- a cooling guide disposed between two of the plurality of rotor blocks and forming a spray flow path configured to guide the cooling fluid passing through the at least one spray hole to be sprayed to an inner circumference of the stator,
- wherein an outer diameter of the cooling guide is smaller than an outer diameter of the rotor core of each of the rotor blocks,
- wherein a gap is formed between the pair of adjacent rotor blocks and the gap has a major arc shape, and
- wherein a portion of the cooling fluid sprayed to the inner circumference of the stator from the spray flow path falls into the gap and flows along the gap.
Dependencies are inferred from the claim text.