US 12,410,924 B2
Air purifier including bidirectional discharge flow path and method of controlling the same
Hyun Jin Hong, Seoul (KR); Sang Woo Kang, Seoul (KR); An Ho Cho, Seoul (KR); Do Yeop Kim, Seoul (KR); and Ji Hye Jeong, Seoul (KR)
Assigned to COWAY CO., LTD., Gongju-si (KR)
Appl. No. 17/256,503
Filed by COWAY CO., LTD., Gongju-si (KR)
PCT Filed Jun. 13, 2019, PCT No. PCT/KR2019/007160
§ 371(c)(1), (2) Date Dec. 28, 2020,
PCT Pub. No. WO2020/004839, PCT Pub. Date Jan. 2, 2020.
Claims priority of application No. 10-2018-0075872 (KR), filed on Jun. 29, 2018.
Prior Publication US 2021/0278096 A1, Sep. 9, 2021
Int. Cl. F24F 8/10 (2021.01); B01D 46/44 (2006.01); B01D 46/46 (2006.01); F24F 8/80 (2021.01)
CPC F24F 8/10 (2021.01) [B01D 46/442 (2013.01); B01D 46/46 (2013.01); F24F 8/80 (2021.01); B01D 2279/50 (2013.01)] 11 Claims
OG exemplary drawing
 
1. An air purifier comprising a plurality of air purification modules, wherein each of the plurality of air purification modules comprises:
a blowing fan;
a flow path dividing portion on which the blowing fan is rotatably mounted;
a flow path portion comprising a first flow path portion located at one side of the flow path dividing portion and a second flow path portion located at the other side opposite the blowing fan with respect to the one side of the flow path dividing portion;
a housing accommodating the blowing fan, the flow path dividing portion, and the flow path portion therein,
a sensor unit located on one side of the air purification modules and comprising a motion sensor for detecting whether an object moves on one side of the air purification modules and a dust sensor;
a motion calculation module for calculating reference information for calculating the flow path portion control information by using the motion information detected by the motion sensor; and
wherein the housing comprises a first opening located at one side of the housing and providing a passage through which the first flow path portion is connected in fluid communication with an outside of the housing and a second opening located at the other side of the housing and providing a passage through which the second flow path portion is connected in fluid communication with the outside of the housing, and
the first flow path portion comprises a first flow path opening/closing portion located at one side opposite to the blowing fan, and the second flow path portion comprises a second flow path opening/closing portion located at one side opposite to the blowing fan, and
the first flow path opening/closing portion is located between a first open position in which the first opening is opened, and a first closing position in which the first opening is closed, and
the second flow path opening/closing portion is located between a second open position in which the second opening is opened, and a second closing position in which the second opening is closed,
a blowing fan control module for calculating the rotation speed of the blowing fan using the reference information calculated by the motion calculation module; and
a flow path control module for controlling the operation status and operation position of the first flow path opening/closing portion and the second flow path opening/closing portion, using the reference information calculated by the motion calculation module are further comprised, and
the motion calculation module, when a movement of an object is detected by the motion sensor or no movement of an object is detected for a preset time, calculates the reference information for rotating the blowing fan at a first speed, and the reference information for controlling the operation status and operation position of the first flow path opening/closing portion and the second flow path opening/closing portion, which are in correspondence with the position where the movement of the object is detected or the position where no movement of an object is detected.