US 12,135,035 B2
Motor assembly and cleaner comprising same
Woong Hwang, Suwon-si (KR); Hyunjoo Kim, Suwon-si (KR); Taesang Park, Suwon-si (KR); Wonsoo Kang, Suwon-si (KR); Jimin Kim, Suwon-si (KR); Keeyeon Cho, Suwon-si (KR); and Jinwoo Han, Suwon-si (KR)
Assigned to SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed by SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed on Oct. 4, 2022, as Appl. No. 17/959,685.
Application 17/959,685 is a continuation of application No. PCT/KR2021/004553, filed on Apr. 12, 2021.
Claims priority of application No. 10-2020-0070895 (KR), filed on Jun. 11, 2020.
Prior Publication US 2023/0021359 A1, Jan. 26, 2023
Int. Cl. F04D 25/08 (2006.01); A47L 9/28 (2006.01); F04D 29/58 (2006.01)
CPC F04D 25/082 (2013.01) [A47L 9/2889 (2013.01); F04D 29/5806 (2013.01); F05D 2250/52 (2013.01); F05D 2260/221 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A motor assembly comprising:
a stator having a space in a center of the stator;
a rotor positioned in the space, the rotor having a rotary shaft;
an impeller connected to the rotary shaft;
a diffuser having a housing disposed between the impeller and the stator and surrounding an upper side of the stator, and an outlet outside of an outer side surface of the housing, the diffuser configured to discharge air suctioned by the impeller and flowing along the outer side surface of the housing through the outlet; and
a heat dissipation cover covering at least a portion of an outer side surface of the stator,
wherein the heat dissipation cover includes:
an inner cover spaced apart from the outer side surface of the stator, to form an inside-cover flow channel between the inner cover and the outer side surface of the stator through which air is introduced into an inside of the housing during rotation of the rotor, and
an outer cover, having a diameter greater than that of the inner cover, and the outer cover spaced apart from the housing to form an outside-cover flow channel with the housing through which the introduced air is discharged.