US 12,279,739 B2
Motor assembly and a cleaner comprising the same
Taesang Park, Suwon-si (KR); Minsuk Kang, Suwon-si (KR); and Dongsuk Ko, Suwon-si (KR)
Assigned to SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed by Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed on Apr. 27, 2021, as Appl. No. 17/241,229.
Claims priority of application No. 10-2020-0050987 (KR), filed on Apr. 27, 2020.
Prior Publication US 2021/0330146 A1, Oct. 28, 2021
Int. Cl. F04D 29/16 (2006.01); A47L 5/22 (2006.01); A47L 9/22 (2006.01); F04D 29/30 (2006.01); F04D 29/62 (2006.01); F04D 29/28 (2006.01); F04D 29/52 (2006.01)
CPC A47L 5/22 (2013.01) [A47L 9/22 (2013.01); F04D 29/30 (2013.01); F04D 29/622 (2013.01); F04D 29/162 (2013.01); F04D 29/167 (2013.01); F04D 29/281 (2013.01); F04D 29/289 (2013.01); F04D 29/526 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A motor assembly, comprising:
a motor having a stator and a rotor rotatable about an axis;
an impeller having a plurality of wings, the impeller being configured to connect to the rotor of the motor while the impeller is arranged along a direction of the axis about which the rotor is rotatable; and
an impeller cover, configured to cover a side surface of the impeller, having an inlet, the impeller cover facing the impeller along the direction of the axis about which the rotor is rotatable while the impeller cover covers the side surface of the impeller,
wherein the impeller cover includes:
at least one protrusion to protrude from an inner circumferential surface of the impeller cover so that while the impeller cover covers the side surface of the impeller, the at least one protrusion of the impeller cover is between the impeller and the impeller cover and spaces the inner circumferential surface of the impeller cover apart from the impeller by a distance according to a height of the at least one protrusion along the direction of the axis about which the rotor is rotatable,
wherein when the impeller rotates, the at least one protrusion of the impeller cover is worn by the plurality of wings of the impeller, and
wherein the at least one protrusion is among multiple protrusions and each of the multiple protrusions are configured to be formed discontinuously along the inner circumferential surface of the impeller cover in a dotted-line form so that each of the multiple protrusions is in contact with a separate wing of the plurality of wings.