| CPC H02K 1/16 (2013.01) [F04D 25/06 (2013.01); H02K 3/12 (2013.01); H02K 7/003 (2013.01); H02K 7/14 (2013.01); H02K 2203/00 (2013.01)] | 8 Claims |
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1. A fan motor comprising:
a rotating shaft;
a rotor mounted on the rotating shaft;
a stator surrounding the rotor; and
an impeller coupled to the rotation shaft,
wherein the stator includes:
a stator core;
a plurality of insulators coupled to the stator core; and
a coil wound on each of the plurality of insulators,
wherein the stator core includes:
a back yoke body; and
a plurality of teeth disposed inside the back yoke body to be spaced apart from each other,
wherein each of the plurality of teeth includes:
a neck coupled to the back yoke body; and
a shoe protruding toward an outer circumference of the rotor from the neck, and
wherein each of the plurality of insulators includes:
a neck insulator surrounding the neck;
a first barrier protruding in an axial direction from the neck insulator; and
a pair of second barriers protruding toward an inner circumference of the back yoke body from the neck insulator,
wherein the pair of second barriers protrude in opposite directions from the neck insulator,
wherein the pair of second barriers each comprises:
an air guide that is in contact with a second barrier of an adjacent different insulator and defines a cooling fluid passage together with the adjacent different insulator,
wherein the stator further comprises:
an inner insulator disposed on an inner circumference of the back yoke body,
wherein a coil space is defined among the second barrier, the neck insulator, and the inner insulator and configured to receive the coils,
wherein the pair of second barriers each includes an inner insulator contactor extending from the air guide and contacting the inner insulator,
wherein a stator cooling fluid passage is defined between the inner insulator contactor of the adjacent different insulator and the inner insulator, and
wherein the stator cooling fluid passage is separated from the cooling fluid passage and the coil space.
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