公开(公告)号：US20190078802A1

公开(公告)日：2019-03-14

申请号：US16085005

申请日：2017-03-15

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： RUIFENG XUE ,  RUI KE ,  SHAN ZHU ,  SHUANG CHEN

IPC: F24F11/32 ,  F24F3/16

Abstract: An air purifier comprise a gas filter between an upstream air flow and a downstream air flow and a concentration sensor comprising a first electrode and a second electrode, the first electrode being exposed to the upstream air flow and the second electrode exposed to the downstream air flow, the concentration sensor providing an output signal based on the difference in concentrations of a target gas at the first and second electrodes. The output signal is processed to determine information relating to the con- dition of the gas filter.

公开(公告)号：US20170328590A1

公开(公告)日：2017-11-16

申请号：US15535548

申请日：2015-12-18

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： RUI KE ,  NARENDRA NILKANTH PAWAR ,  DECLAN PATRICK KELLY ,  JOANNE TANG ,  RUIFENG XUE

IPC: F24F3/16 ,  B01D46/44 ,  B01D46/46 ,  F24F11/00 ,  B01D46/00

CPC classification number: F24F3/1603 ,  B01D46/002 ,  B01D46/0041 ,  B01D46/442 ,  B01D46/46 ,  B01D2267/40 ,  B01D2273/30 ,  B01D2279/40 ,  F24F11/30 ,  F24F11/39 ,  F24F11/77 ,  F24F11/79 ,  F24F13/28 ,  F24F2110/50 ,  F24F2110/64

Abstract: In various embodiments, an air purification system (100, 300, 400) may include a first air filter (316, 416) that targets at least a first type of pollutant. In various embodiments, air that passes through the first air filter may be unobstructed by other air filters. In various embodiments, a second air filter (316, 416) may target at least a second type of pollutant that is different than the first type of pollutant. In various embodiments, air that passes through the second air filter may also be unobstructed by other air filters. In various embodiments, a controller (102, 302) may be configured to selectively move the first and/or second air filters to expose one or both of the first and second air filters to one or more air streams, e.g., based on user input and/or on one or more signals from one or more pollutant sensors (106, 306).