US 11,992,169 B2
Cleaner
Bohyun Nam, Seoul (KR); Namhee Kim, Seoul (KR); Jinju Kim, Seoul (KR); Hyeonjeong An, Seoul (KR); and Jungbae Hwang, Seoul (KR)
Assigned to LG ELECTRONICS INC., Seoul (KR)
Filed by LG Electronics Inc., Seoul (KR)
Filed on Mar. 25, 2021, as Appl. No. 17/212,481.
Application 17/212,481 is a continuation of application No. 16/723,785, filed on Dec. 20, 2019, granted, now 10,980,380.
Application 16/723,785 is a continuation of application No. 15/475,476, filed on Mar. 31, 2017, granted, now 10,575,689, issued on Mar. 3, 2020.
Claims priority of application No. 10-2016-0039814 (KR), filed on Mar. 31, 2016; and application No. 10-2016-0070220 (KR), filed on Jun. 7, 2016.
Prior Publication US 2021/0204771 A1, Jul. 8, 2021
Int. Cl. A47L 5/28 (2006.01); A47L 5/24 (2006.01); A47L 9/00 (2006.01); A47L 9/12 (2006.01); A47L 9/14 (2006.01); A47L 9/16 (2006.01); A47L 9/22 (2006.01); A47L 9/28 (2006.01)
CPC A47L 5/28 (2013.01) [A47L 5/24 (2013.01); A47L 9/00 (2013.01); A47L 9/12 (2013.01); A47L 9/149 (2013.01); A47L 9/1608 (2013.01); A47L 9/1616 (2013.01); A47L 9/1625 (2013.01); A47L 9/1641 (2013.01); A47L 9/22 (2013.01); A47L 9/2842 (2013.01); A47L 9/2857 (2013.01); A47L 9/2884 (2013.01)] 38 Claims
OG exemplary drawing
 
1. A cleaner comprising:
a suction unit configured to guide air into the cleaner;
a suction motor configured to generate suction force to thereby draw air into the cleaner through the suction unit;
a rotary impeller configured to rotate about a rotational axis extending in an axial direction of the suction motor;
a first cyclone unit configured to separate dust from air that is suctioned into the cleaner through the suction unit;
a second cyclone unit configured to separate dust from air that is discharged from the first cyclone unit;
a pre-filter configured to filter air discharged from the second cyclone unit before the air is suctioned into the suction motor;
an exhaust filter that circumferentially extends around an extension line of the rotational axis and is configured to filter air discharged from the suction motor; and
a discharge cover accommodating the exhaust filter and having one or more air exits that are configured to discharge air that has passed through the exhaust filter to an outside of the cleaner,
wherein:
the pre-filter extends from the exhaust filter toward the second cyclone unit along an outer circumference of the suction motor,
the discharge cover is disposed above the impeller in the axial direction,
the impeller is disposed above the suction motor in the axial direction, and
the suction motor is disposed above the second cyclone unit in the axial direction.