公开(公告)号：US11327001B2

公开(公告)日：2022-05-10

申请号：US16652715

申请日：2018-10-08

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Peng Zhang ,  Shuang Chen ,  Qiushi Zhang

IPC: G01N15/10 ,  G01N15/02

Abstract: A particle or pollen sensor comprises an array of relative humidity sensors. A change in relative humidity is representative of a particle or pollen in contact with one or more of the sensors. A size and/or shape of a particle or pollen in contact with one or more of the sensors is optionally also determined based on the number and/or configuration of sensors. From this information, a particle or pollen type is determined.

公开(公告)号：US11280715B2

公开(公告)日：2022-03-22

申请号：US16632425

申请日：2018-07-25

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Declan Patrick Kelly ,  Shuang Chen ,  Michael Martin Scheja

IPC: G01N15/06 ,  G01N1/22 ,  G01N15/14

Abstract: A particle sensing apparatus is provided for determining particle concentration in a fluid, e.g. air. The apparatus is based on fluid-flow passageway having an upstream inlet to receive the fluid and a downstream outlet to exhaust the fluid. It also includes a recirculation passageway in fluid communication with the fluid-flow passageway. Between them, the fluid-flow passageway and the recirculation passageway define a recirculation loop. A first particle sensor is located in the recirculation loop, and other sensors may also be present at other options. A force applicator is included in the fluid-flow passageway to apply a force to the particles entrained in the fluid. The force is used to direct some or all of the particles into the recirculation loop. This provides a choice between increasing the detection limit or the detection range. A processor determines the concentration of particles in the fluid based on the concentration of particles detected at the first particle sensor.

公开(公告)号：US10942106B2

公开(公告)日：2021-03-09

申请号：US16485226

申请日：2018-02-14

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Qiu Shi Zhang ,  Shuang Chen

IPC: G01N15/02 ,  G01N15/14

Abstract: An apparatus is provided for determining particle characteristics, in which a flow path is generated containing particles to be analyzed. A light detection system detecting light received from a measurement zone which has been scattered by the particles. A time duration for which a particle remains in the measurement zone is measured to determine an effective aerodynamic particle diameter and a peak detected received light intensity is measured to determine an effective optical particle diameter. A further particle parameter is also obtained relating to the shape and/or density of the particle. This approach enables more information than only a particle size to be obtained using a single-stage optical analysis system. The additional information may be used to characterize the particles more accurately.

公开(公告)号：US10816445B2

公开(公告)日：2020-10-27

申请号：US16619138

申请日：2018-06-20

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Declan Patrick Kelly ,  Michael Martin Scheja ,  Shuang Chen ,  Cornelis Reinder Ronda

IPC: G01N1/40 ,  B01L3/00 ,  B01L7/00 ,  G01N15/06 ,  G01N15/00

Abstract: A particle sensing system is for sensing particles entrained in a fluid. The system comprises a flow channel having a longitudinal direction along which the fluid is to be passed, a heating arrangement for heating the fluid and thereby applying a positive thermophoretic force on the fluid in a direction perpendicular to the longitudinal direction of the flow channel and a first sensor for sensing the particles in the fluid after heating by the heating arrangement. The thermophoretic force increases the concentration of the particles at the first sensor.

公开(公告)号：US11291940B2

公开(公告)日：2022-04-05

申请号：US16081500

申请日：2017-02-27

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Shuang Chen

IPC: B01D46/00 ,  F24F11/30 ,  B01D46/44 ,  F24F110/20 ,  F24F11/39

Abstract: An air purifier includes an air inlet and an air outlet. The air purifier further includes a first sensor for determining a water molecule adsorption level of a filter for removing gas pollutants or particles from air propagating from the air inlet to the air outlet. The air purifier furthermore includes a processor that determines a life-time of the filter based on the water molecule adsorption level of the filter measured by the first sensor. Additionally, a method for determining a life-time of a filter for removing gas pollutants or particles from air is described.

公开(公告)号：US10948207B2

公开(公告)日：2021-03-16

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 ,  G01N27/409 ,  F24F11/30 ,  G01N27/66 ,  F24F110/50 ,  F24F110/64

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 condition of the gas filter.

公开(公告)号：US10369511B2

公开(公告)日：2019-08-06

申请号：US15533393

申请日：2015-12-16

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Shuang Chen ,  Weizhong Chen

IPC: B01D53/04 ,  B01D53/02

Abstract: A filter element (1) for use in a gas purification device (100) is disclosed. It comprises a substrate (10) and a filter layer (20) covering an exterior surface of the substrate (10). The substrate (10) comprises material for containing chemicals (30) effective to remove gas pollutants from a gas. The material of the filter layer (20) is hydrophilic to adsorb liquid solution adsorbents effective in removing gas pollutants from a gas, and the exterior surface of the substrate (10) covered by the filter layer (20) is hydrophobic.