US 12,103,014 B2
Fine dust collecting filter device
SangWoo Kim, Yongin-si (KR); Byung Ok Choi, Seoul (KR); Min Ki Kang, Suwon-si (KR); Jeong Hwan Lee, Gumi-si (KR); Young Jun Kim, Daejeon (KR); and In Yong Suh, Suwon-si (KR)
Assigned to Research & Business Foundation Sungkyunkwan University, Suwon-si (KR); and SAMSUNG LIFE PUBLIC WELFARE FOUNDATION, Seoul (KR)
Filed by Research & Business Foundation Sungkyunkwan University, Suwon-si (KR); and SAMSUNG LIFE PUBLIC WELFARE FOUNDATION, Seoul (KR)
Filed on Jul. 20, 2021, as Appl. No. 17/380,066.
Claims priority of application No. 10-2020-0091347 (KR), filed on Jul. 23, 2020.
Prior Publication US 2022/0023882 A1, Jan. 27, 2022
Int. Cl. B03C 3/66 (2006.01); A62B 23/02 (2006.01); B01D 46/00 (2022.01); B03C 3/155 (2006.01); B03C 3/32 (2006.01); B03C 3/41 (2006.01); B03C 3/45 (2006.01); H02M 7/06 (2006.01); H02N 1/08 (2006.01)
CPC B03C 3/66 (2013.01) [A62B 23/02 (2013.01); B01D 46/0032 (2013.01); B03C 3/155 (2013.01); B03C 3/32 (2013.01); B03C 3/41 (2013.01); B03C 3/45 (2013.01); H02N 1/08 (2013.01); H02M 7/06 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A fine dust collecting filter device, comprising:
an electrostatic energy harvesting element comprising an electrostatic amplifier attached to a part of a body that comes into contact with an external substance and configured to collect and generate current;
a charging filter connected to the electrostatic energy harvesting element such that the charging filter is electrically charged to have a first polarity and thus electrically charges fine dust particles;
a collecting filter connected to the electrostatic energy harvesting element such that the collecting filter is electrically charged to have a second polarity opposite to the first polarity; and
a rectifier disposed between and connected to the electrostatic energy harvesting element, and the charging filter and the collecting filter,
wherein the electrically charged fine dust particles from the charging filter are collected into the collecting filter due to the second polarity thereof,
wherein as the electrostatic amplifier comes into contact with the external substance, a surface portion of the electrostatic amplifier that is in contact with the external substance is charged to have a polarity opposite to that of the external substance.