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公开(公告)号：US11617979B2
公开(公告)日：2023-04-04
申请号：US16349308
申请日：2017-11-23
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Johannes Marra , Achim Gerhard Koerber , Cornelis Reinder Ronda
Abstract: The present invention relates to a device and method for determining the pollution status of a particle filter (10) for an air-cleaning device (1) with increased accuracy at low extra costs. The device comprises a sheet resistance input (43) for obtaining sheet resistance information (21) indicating or allowing to determine an electrical sheet resistance of the particle filter (10); a humidity input (44) for obtaining humidity information (31) indicating the relative humidity of the filter's environment; and a processor (45) for comparing the electrical sheet resistance indicated by or determined from the obtained sheet resistance information (21) with a reference sheet resistance of a clean particle filter at the relative humidity (31) indicated by the obtained humidity information and given at the time of acquisition of said electrical sheet resistance and for generating, based on said comparison, a control signal (41) for control of the air-cleaning device and/or a status information (42) indicating the pollution status of the particle filter (10).
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公开(公告)号：US11413628B2
公开(公告)日：2022-08-16
申请号：US16465588
申请日：2017-12-01
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Johannes Marra , Achim Gerhard Rolf Koerber , Cornelis Reinder Ronda
Abstract: An electrostatic air cleaning device comprises a particle charging section, a particle precipitation section, a current sensor for measuring an electric current flowing through electrode plates of the precipitation section and a relative humidity sensor. The voltage applied to the electrode plates and the air flow through the device are controlled in dependence on the measured current flowing through the electrode plates. In this way, control is provided to prevent excessive electric leakage currents inside the precipitation section, that may lead to a hazard, and to optimize the energy efficiency of the cleaning device in relation to its cleaning performance. The relative humidity information also enables diagnosis of the cause of the high leakage current and the status of the precipitation section concerning the amount of precipitated particles therein.
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公开(公告)号：US11555626B2
公开(公告)日：2023-01-17
申请号：US16636354
申请日：2018-08-01
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Johannes Marra , Achim Gerhard Rolf Koerber , Cornelis Reinder Ronda
IPC: F24F11/74 , F24F7/04 , F24F13/02 , F24F13/12 , F24F110/20 , F24F110/22 , F24F110/40 , F24F110/10 , F24F110/12 , F24F110/52 , F24F11/00
Abstract: A ventilation unit is for ventilating an indoor space, and incorporates an air cleaning device and mechanical restrictor for controlling a restriction to a flow resulting from a pressure differential across the unit. There is determination of the inside and outside air pressures in the vicinity of the unit and of air quality parameters inside and outside. The air cleaning device and the mechanical restrictor are controlled in dependence on the determined air pressures and air quality parameters. This provides a fan-less, and hence low-power ventilation unit, which relies on throttling the natural air flow across the unit to provide flow control, and hence enable control of air quality. The air cleaning device may be operated only when the flow is into the inside space, saving power.
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公开(公告)号：US11672375B2
公开(公告)日：2023-06-13
申请号：US16474323
申请日：2017-12-28
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Jasper Zuidervaart , Mart Kornelis-Jan Te Velde , Johannes Marra , Anna Louise Wijnoltz , Nicole Petronella Martien Haex , Nicolaas Petrus Willard , Pieter Musters
CPC classification number: A47J31/52 , A47J31/3609 , A47J31/3676 , A47J31/42
Abstract: A method and apparatus provides a coffee beverage having a reduced terpene content, in which terpene content is reduced by increasing the particle size of the coffee grounds.
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