US 11,654,389 B2
Air cleaner with cutter
Hyunju Kim, Seoul (KR); Hyun Byung Cha, Seoul (KR); Chinsoo Hyon, Seoul (KR); Younju Oh, Seoul (KR); and Hee Jeong Heo, Seoul (KR)
Assigned to LG ELECTRONICS INC., Seoul (KR)
Filed by LG ELECTRONICS INC., Seoul (KR)
Filed on Sep. 15, 2020, as Appl. No. 17/21,040.
Claims priority of provisional application 62/927,088, filed on Oct. 28, 2019.
Claims priority of application No. 10-2020-0093354 (KR), filed on Jul. 27, 2020; application No. 10-2020-0093355 (KR), filed on Jul. 27, 2020; application No. 10-2020-0093356 (KR), filed on Jul. 27, 2020; application No. 10-2020-0093359 (KR), filed on Jul. 27, 2020; and application No. 10-2020-0093367 (KR), filed on Jul. 27, 2020.
Prior Publication US 2021/0121810 A1, Apr. 29, 2021
Int. Cl. B01D 46/00 (2022.01); B01D 46/16 (2006.01); B01D 46/18 (2006.01); B01D 46/46 (2006.01); B01D 46/88 (2022.01); B01D 46/44 (2006.01); A47J 36/38 (2006.01); B01D 46/42 (2006.01); B01D 53/04 (2006.01); B01D 46/62 (2022.01); B01D 46/24 (2006.01)
CPC B01D 46/18 (2013.01) [A47J 36/38 (2013.01); B01D 46/0005 (2013.01); B01D 46/0036 (2013.01); B01D 46/0038 (2013.01); B01D 46/0049 (2013.01); B01D 46/0086 (2013.01); B01D 46/16 (2013.01); B01D 46/4227 (2013.01); B01D 46/4245 (2013.01); B01D 46/442 (2013.01); B01D 46/46 (2013.01); B01D 46/62 (2022.01); B01D 46/88 (2022.01); B01D 53/0446 (2013.01); B01D 46/2411 (2013.01); B01D 2253/102 (2013.01); B01D 2257/90 (2013.01); B01D 2259/4541 (2013.01); B01D 2265/023 (2013.01); B01D 2265/028 (2013.01); B01D 2273/30 (2013.01); B01D 2277/30 (2013.01); B01D 2279/35 (2013.01)] 26 Claims
OG exemplary drawing
 
1. An air cleaner, comprising:
an outer case having an inlet through which air is suctioned, an outlet through which is air discharged, a dispensing slit, and a grill covering the inlet;
a frame provided inside of the outer case;
a fan housed in the frame to suction air through the inlet and discharge air out of the outlet;
a roll filter provided inside of the case and having a filter roller and a filter sheet having a plurality of sections wound around the filter roller;
a filter cutter configured to cut a corresponding section of the filter sheet that has moved between the frame and the outer case when unwound;
a first motor configured to unwind the filter sheet from the roll filter; and
a second motor configured to operate the filter cutter to cut the corresponding section from the filter sheet after the filter sheet is unwound by a predetermined amount via the first motor.