US 12,233,372 B2
Air cleaner for oil and other contaminants
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. 17/020,975.
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 2021/0121811 A1, Apr. 29, 2021
Int. Cl. B01D 46/44 (2006.01); A47J 36/38 (2006.01); B01D 46/00 (2022.01); B01D 46/16 (2006.01); B01D 46/18 (2006.01); B01D 46/42 (2006.01); B01D 46/46 (2006.01); B01D 46/62 (2022.01); B01D 46/88 (2022.01); B01D 53/04 (2006.01); 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)] 12 Claims
OG exemplary drawing
 
1. An air cleaner, comprising:
an outer case having a first opening and a second opening;
a grill coupled to the outer case to cover the first opening and having a plurality of openings through which air is suctioned;
a roll filter provided behind the grill, the roll filter having a roller and a filter sheet wound around the roller, wherein a first unwound section of the filter sheet extends from the roller and faces the grill;
a fan provided behind the roll filter and configured to suction air through the openings of the grill and discharge air out of the second opening;
an inner support provided inside of the outer case and a frame supported by the inner support, the fan being provided in the frame, wherein the roller is supported by at least one of the inner support or the frame;
a first roller and a second roller, wherein the first unwound section of the filter sheet is fed between the first and second rollers when the first and second rollers are rotating in opposite directions such that a second unwound section of the filter sheet is pulled from the roller of the roll filter to face the grill; and
a cover that includes a slit, the first and second rollers being rotated until an end of the first unwound section of the filter sheet passes through the slit so that a user may discard the first unwound section,
wherein the roll filter is provided in a filter cartridge, and the outer case has a top opening to allow insertion or removal of the filter cartridge into or from the outer case.