US 11,684,883 B2
Air purifier including bi-directional fans having different discharge directions
Hyun Jin Hong, Seoul (KR); Sang Woo Kang, Seoul (KR); and An Ho Cho, Seoul (KR)
Assigned to COWAY CO., LTD., Gongju-si (KR)
Appl. No. 16/624,424
Filed by COWAY CO., LTD., Gongju-si (KR)
PCT Filed Jun. 19, 2018, PCT No. PCT/KR2018/006895
§ 371(c)(1), (2) Date Dec. 19, 2019,
PCT Pub. No. WO2018/236122, PCT Pub. Date Dec. 27, 2018.
Claims priority of application No. 10-2017-0077541 (KR), filed on Jun. 19, 2017.
Prior Publication US 2020/0129909 A1, Apr. 30, 2020
Int. Cl. F04D 29/42 (2006.01); F04D 25/10 (2006.01); F24F 8/80 (2021.01); B01D 46/00 (2022.01); F04D 25/16 (2006.01); F04D 17/16 (2006.01); F24F 8/10 (2021.01); F24F 13/20 (2006.01); F24F 11/77 (2018.01); F24F 13/10 (2006.01); F04D 29/70 (2006.01)
CPC B01D 46/0047 (2013.01) [F04D 17/162 (2013.01); F04D 25/10 (2013.01); F04D 25/16 (2013.01); F04D 25/166 (2013.01); F04D 29/422 (2013.01); F04D 29/424 (2013.01); F24F 8/10 (2021.01); F24F 8/80 (2021.01); F24F 13/20 (2013.01); F04D 29/701 (2013.01); F24F 11/77 (2018.01); F24F 13/10 (2013.01)] 15 Claims
OG exemplary drawing
 
1. An air purifier comprising:
a plurality of bi-directional fans, which are arranged to be misaligned in a vertical direction such that discharge directions of discharge ports are different from each other; and
a flow path provided on one side of the air purifier and in communication with an upper discharge port positioned on an upper side of the air purifier and a side discharge port positioned on a side of the air purifier,
wherein the bi-directional fans include an upper bi-directional fan and a lower bi-directional fan,
wherein a discharge port of the upper bi-directional fan faces upward, and a discharge port of the lower bi-directional fan is inclined from the vertical direction to face towards one side of an upper portion;
the discharge port of the lower bi-directional fan is in communication with the flow path;
wherein air discharged from the upper bi-directional fan is discharged toward the upper discharge port; and wherein air discharged from the lower bi-directional fan is selectively discharged toward the upper discharge port or the side discharge port depending on an operation of a flow path switching member provided on the flow path,
wherein the discharge directions of the discharge ports of the plurality of bi-directional fans are different from each other, and bi-directional intake ports of the plurality of bi-directional fans are positioned on left and right sides of the air purifier.