公开(公告)号：US10663184B2

公开(公告)日：2020-05-26

申请号：US15508673

申请日：2015-09-04

Applicant: LG ELECTRONICS INC.

Inventor： Jungmin Park ,  Hamin Jeon ,  Howon Son ,  Heejae Kim

IPC: F24F11/39 ,  G08B21/00 ,  G08B17/10 ,  F24F11/30 ,  F24F11/89 ,  F24F13/28 ,  B01D46/44 ,  B01D46/00 ,  F24F1/0007 ,  F24F110/64 ,  F24F110/50 ,  F24F110/60

Abstract: An air conditioner including a first filter; a second filter located downstream of the first filter; a dust amount sensor located upstream of the first filter and having a hole through which dust passes, the dust amount sensor configured to transmit, per unit of time, each of a first total, which is an amount of dust in a first size range, and a second total, which is an amount of dust in a second size range smaller than the first size range, of the dust passing through the hole; and a controller configured to output a service signal for the first filter if the accumulated value of the first total transmitted from the dust amount sensor exceeds a first set value, and output a service signal for the second filter if the accumulated value of the second total transmitted from the dust amount sensor exceeds a second set value.