US 11,754,302 B2
Portable air purifier
Youngjun Kim, Seoul (KR); Ho-Jung Kim, Seoul (KR); Ji Hyung Kim, Seoul (KR); Tae Yoon Kim, Seoul (KR); Myung Jin Ku, Seoul (KR); Seong Ho Hong, Seoul (KR); Juhyun Kim, Seoul (KR); and Jongkeon Jeon, Seoul (KR)
Assigned to LG ELECTRONICS INC., Seoul (KR)
Appl. No. 16/646,257
Filed by LG ELECTRONICS INC., Seoul (KR)
PCT Filed Sep. 11, 2018, PCT No. PCT/KR2018/010651
§ 371(c)(1), (2) Date Mar. 11, 2020,
PCT Pub. No. WO2019/050383, PCT Pub. Date Mar. 14, 2019.
Claims priority of application No. 10-2017-0116151 (KR), filed on Sep. 11, 2017; application No. 10-2018-0037517 (KR), filed on Mar. 30, 2018; and application No. 10-2018-0108379 (KR), filed on Sep. 11, 2018.
Prior Publication US 2020/0282797 A1, Sep. 10, 2020
Int. Cl. F24F 8/80 (2021.01); B01D 46/00 (2022.01); B60H 1/00 (2006.01); B60H 3/06 (2006.01); F24F 8/10 (2021.01); F24F 8/108 (2021.01); B01D 46/42 (2006.01); F24F 13/20 (2006.01)
CPC F24F 8/80 (2021.01) [B01D 46/0005 (2013.01); B60H 1/00021 (2013.01); B60H 1/00264 (2013.01); B60H 1/00428 (2013.01); B60H 1/00657 (2013.01); B60H 3/06 (2013.01); F24F 8/10 (2021.01); F24F 8/108 (2021.01); B01D 46/42 (2013.01); B01D 2273/30 (2013.01); B60H 1/00828 (2013.01); B60H 3/0658 (2013.01); F24F 13/20 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A portable air purifier, comprising:
at least one blower fan which is rotated about a rotational shaft extending in a first direction and including a hub and a plurality of fan blades connected to a radial circumference of the hub;
a filter unit including a filter disposed adjacent to the at least one blower fan at a suction side of the at least one blower fan;
a fan cover including at least one shield plate disposed at a discharge side of the at least one blower fan to cover the hub, and a plurality of guide vanes configured to guide a discharge direction of air discharged from the at least one blower fan, wherein a blowing surface is formed in front of a region in which the plurality of fan blades is rotated, wherein the plurality of guide vanes is disposed in front of the blowing surface and radially extends from the rotational shaft, wherein the plurality of guide vanes includes a first guide surface disposed adjacent to the at least one blower fan configured to guide a discharge direction of air discharged from the at least one blower fan and a second guide surface connected to the first guide surface and disposed farther than the first guide surface from the at least one blower fan, wherein the second guide surface extends parallel to the first direction, wherein the first guide surface and the second guide surface are directly and continuously connected, and wherein the first guide surface forms a plane surface that extends in a direction parallel to the discharge direction of air discharged from the at least one blower fan, the plane surface extending at a predetermined angle with respect to the blowing surface; and
a battery supported by the fan cover, wherein the fan cover includes an upper cover disposed in a first region where the fan is disposed, and a lower cover disposed in a second region where the fan is not disposed, wherein the battery is disposed in the second region and coupled to the fan cover, and wherein the lower cover extends from the upper cover between the blowing surface and the battery to support the battery.