Koninklijke Philips Corporation N.v.

Rui Ke

Jing Su

Declan Patrick Kelly

Shuang Chen

Ming Sun

Huibin Wei

Catherine Wei

Zhiqiang Zhang

Ruifeng Xue

Shan Zhu

An air purifier () uses an air purifier filter unit () and a sensor () for sensing the matter to be filtered by the air purifier filter unit. By monitoring () the performance of the air purifier combined with information about the air purifier filter unit, it is possible to determine a volume of the space in which the air purifier () is deployed.

Air purifier and a method for controlling an air purifier

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 condition of the gas filter.

Air purifier and air purification method

Presented is a device () for filtering air, comprising: an air filter () comprising: a first component () adapted for filtering air having a humidity level falling within a first humidity level range; and a second component () adapted for filtering air having a humidity level falling within a second humidity level range; a control system () configured for: receiving a sensed relative humidity of air, and selecting the first () or the second () component for filtering the air, depending on the sensed relative humidity of the air.

Air purifier with extended humidity working range

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Eindhoven, Netherlands

Rui Ke