Koninklijke Philips Corporation N.V.

Koninklijke Philips Electronics N.v.

Johan Marra

Cornelis Reinder Ronda

Declan Patrick Kelly

Berent Willem Meerbeek

Hans Van Sprang

Johan Hendrik Klootwijk

Marcus Antonius Verschuuren

Jan Frederik Suijver

Nicolaas Petrus Willard

Céline Catherine Sarah Nicole

Mart Kornelis-Jan Te Velde

Nico Maris Adriaan De Wild

Jacobus Bernardus Giesbers

Karel Johannes Adrianus Van Den Aker

Michael Martin Scheja

Theo Arnold Kop

Weizhong Chen

Ronald Martin Wolf

Jasper De Vreede

Harmina Christina Zeijlstra

Jeroen Alphons Pikkemaat

John Robert McGarva

Jean-Paul Jacobs

Job Lipsch

Nicole Petronella Martien Haex

Rogier Adrianus Henrica Niessen

Xuan Zhang

Marcel Bulder

Peter Van Der Linde

Jan De Graff

Andrea Castellani

Constantijn Wilhelmus Maria Brantjes

Hendrikus Jan Wondergem

John Robert Mcgarva

A particle sensor includes an aperture for receiving a gas flow with entrained particles, an electrostatic particle charging section, a parallel-plate particle precipitation section; and a sensor for detecting precipitated particles to produce a sensor signal. The sensor signal Iis related to an apparent particle number concentration of the particles in the gas flow entering the charging section by a calibration constant S, such that I=f(N, S), the calibration constant being dependent on a count mean diameter of the particles in the gas flow entering the charging section according to a first relationship. The particle sensor includes a pre-filter positioned upstream from the charging section, the pre-filter filtering a part of the particles from the gas flow entering the pre-filter, a fractional degree of particle filtering depending on the count mean particle diameter of the particles entering the pre-filter according to a second relationship.

Particle sensor and sensing method

A cleaning device for cleaning an air-ionizing part of an electrode. The device comprises a cleaning member arranged to be in physical contact with the air-ionizing part of the electrode, the air-ionizing part of electrode and the cleaning member being arranged to slide relative to each other. The cleaning device further comprises an actuator arranged to activate the relative motion between the air-ionizing part of the electrode and the cleaning member. There is also provided an ionization electrode comprising the air-ionizing part and the cleaning device, as well as a ultrafine particle sensor, an air ionizer or an electrostatic air cleaner comprising such an electrode.

Cleaning device for cleaning an air-ionizing part of an electrode

The present application relates to an apparatus for purifying and/or humidifying air, and a related method for purifying and/or humidifying air. The apparatus comprises a rotary filter (), a fan () for passing air through the rotary filter (), and a reservoir (), and wherein the rotation speed of the rotary filter () and the settings of the fan () depend on the ambient relative humidity and ambient gas pollutant concentration. The apparatus combines the feature of chemisorption with the use of a rotary filter (), thereby providing an apparatus which is able to purify air and/or regulate the ambient humidity based on humidity levels and levels of a target gas pollutant in the air. The invention removes the need for a pump for liquid transport, removes the need for frequent and expensive filter changes by the user, and instead only requires the user to periodically refresh the filtration solution in the reservoir ().

Air humidification and/or purification

A coffee dispensing apparatus includes a base and an at least one nozzle. Further, base and nozzle are arranged such that the dispensed coffee flows via inner upstanding wall of a standard sized coffee container.

Coffee dispensing apparatus

The invention proposes an apparatus for gas cleaning having a high gas cleaning efficiency at any relative humidity. The apparatus comprises a passage () for gas flow; a hydrophilic carrier () permeable for gas flow, at least part of which is positioned within said passage for gas flow, and configured for containing a reagent that contacts the gas in said passage for gas flow; a unit () for disposing liquid to said carrier; and a controller (), associated with said unit for disposing liquid, configured for controlling the unit for disposing to dispose an aqueous solution of dissolved reagent to the carrier; and after that controlling the unit for disposing to dispose liquid in case the humidity of the gas is below a first humidity threshold, or to stop disposing liquid in case the humidity of the gas is above a second humidity threshold.

Apparatus for gas cleaning

The present invention provides a cleaning device () for cleaning the air-ionizing part () of an electrode (), said device comprising a cleaning member () arranged to be in physical contact with the said air-ionizing part of said electrode, the air-ionizing part of electrode and the cleaning member being arranged to slide relative to each other. The cleaning device further comprises an actuator () arranged to activate the relative motion between said air-ionizing part () of the electrode () and the cleaning member (). There is also provided an ionization electrode comprising an air-ionizing part and the cleaning device, as well as a ultrafine particle sensor, an air ionizer or an electrostatic air cleaner comprising such an electrode.

Cleaning device for cleaning the air-ionizing part of an electrode

A method of selectively sensing the concentration of a target gas in polluted ambient air comprises the steps of: &#x2014;providing a target gas sensor () sensitive to the target gas; &#x2014;providing a first gas flow derived from the ambient air, from which first flow the target gas is substantially removed; &#x2014;providing a second gas flow derived from the ambient air, substantially comprising the same target gas concentration as the ambient air; &#x2014;exposing the target gas sensor to the first gas flow during a first time interval, and obtaining from the sensor a first output signal (Smf); &#x2014;exposing the target gas sensor to the second gas flow during a second time interval not overlapping with the first time interval, and obtaining a second output signal (Smu); &#x2014;calculating the difference (S&#x394;) between the first and the second output signals; calculating the concentration of the target gas from the calculated signal difference (S&#x394;).

Gas sensing apparatus

A device is presented that is capable of recording the evolution over time of the characteristics of a size distribution of electrically-charged airborne particles in an airflow. The device comprises an air inlet, a particle charging unit, a concentration variation section, a particle sensing section and a data evaluation unit. Specifically, the particle sensing section of the device generates at least two serially obtained measurement signals Iand Ifrom which the data evaluation unit can infer values for both the average particle diameter dand the number concentration N of the size distribution of electrically-charged airborne particles. Reliable values can be obtained for N and dunder both stationary conditions and transient conditions with respect to the characteristics of the particle size distribution due to the condition that the change of the inferred average particle diameter dwith respect to a reference particle diameter dis bounded by a set maximum change. This imposed condition markedly reduces scatter in the inferred values for dp,av and N as a function of time, while still allowing transient characteristics with respect to both N and dto become visible in the course of time, without having to rely on averaging procedures and/or device hardware adaptations.

Device for characterizing the evolution over time of a size distribution of electrically-charged airborne particles in an airflow

A device () for characterizing a size distribution of electrically-charged particles in an air flow (), comprising: a particle charging unit (), a parallel arrangement of a first measurement section () and a second measurement section (), located downstream from the particle charging unit (), and a data evaluation unit (), wherein the first measurement section () comprises: a first particle sensing unit () arranged to precipitate substantially all entering electrically-charged particles, and to generate a first output signal (), the second measurement section () comprises: a second particle sensing unit () arranged to precipitate at least part of all entering electrically-charged particles, and to generate a second output signal (), and a first particle precipitation unit () arranged to partially reduce the concentration of electrically-charged particles having a size larger than a first particle size limit, the data evaluation unit () for calculating a particle number concentration and an average diameter based on first and second output signals.

Device for characterizing a size distribution of electrically-charged airborne particles in an air flow

The invention relates to a controlling system for controlling an air handling system that is arranged to handle air in an enclosure such as a cabin of a vehicle. The controlling system comprises a first sensing unit, a second sensing unit, and a controller. The first sensing unit is arranged to generate a first output signal based on a measurement of the 5 concentration of certain airborne pollutants at the upstream side of an air cleaning unit that is comprised in the air handling system. The second sensing unit is arranged to generate a second output signal based on a measurement of the concentration of certain airborne pollutants at the downstream side of the air cleaning unit. The first output signal and the second output signal are used for specific purposes in a decision-making process that can be 10 performed by the controller. The controller is arranged to switch the air handling system into recirculation mode when the first output signal exceeds a predetermined threshold value. Furthermore, the controller is arranged to fine-tune settings of the air handling system, such as the mixing ratio of air admitted from outside the enclosure and recirculating air from the enclosure in the total air flow passing through the air handling system when the air handling 15 system operates in an outside-air-inlet mode. The controlling system according to the invent ion has an increased functionality and can maintain an acceptable air quality inside an enclosed space under a large variety of circumstances.

Controlling system for controlling an air handling system

The invention relates to an air pollution sensor system () comprising an air inlet (), an air outlet (), a sensor unit (), and an air displacement device (). The air displacement device is arranged to establish an air flow () from the air inlet through the sensor unit to the air outlet. The sensor unit comprises, a filter () for removing airborne pollutants from the air flow. The sensor unit is arranged to generate an output signal () based on the amount of airborne pollutants removed from the air flow by the filter. The air displacement device is arranged to be controlled by the output signal, thereby improving the lifetime of the air pollution sensor system by minimizing the amount of pollutants that will be deposited inside the sensor unit when the air pollution sensor system is operated under predetermined conditions.

Air pollution sensor system

The invention relates to an electrostatic particle filter for removing particles from air. The electrostatic particle filter includes a filter medium () with first and second opposite sides, a first electrode () and a second electrode (), the first electrode () and second electrode () being conformally provided on the first and second sides of the filter medium (), respectively. The first electrode (), the second electrode (), and the filter medium () are arranged to allow an electrical conduction current through the filter medium (). The first electrode () is a moderately-conductive electrode having a sheet resistance in a range with a lower boundary value of about 10Ohm per square and an upper boundary value of about 10Ohm per square, at a relative humidity of 30%. The invention also relates to an electrostatic filtration system including the electrostatic particle filter, and a particle charging section ().

Electrostatic particle filter

The disclosure relates to an air pollution sensor system incorporated in an enclosure, the enclosure including an air handling system inside an air duct, the air duct enabling a communication between air inside the enclosure and air outside the enclosure. The air duct including an air inlet for receiving air and an air outlet for releasing handled air inside the enclosure. The air pollution sensor system includes at least one ultra fine particle sensor capable of sensing particles with a diameter in a range of approximately 5-2500 nm, preferably in a range of approximately 5-1000 nm and more preferably in a range of approximately 5-500 nm inside the enclosure and providing a pollution information signal in response to the sensing of the particles. The disclosure further relates to various types of ultra fine particle sensors and air handling systems.

A cooling device for cooling a light-emitting semiconductor device, such as a LED device (), comprises a ceramic plate () having coolant-conveying channels () incorporated therein. The ceramic plate () is adapted for forming an integral part of the optical system of the light-emitting semiconductor device () and to cool a light-emitting portion () of the light-emitting semiconductor device (). A method of forming a cooling device comprises the steps of forming a charge of ceramic particles, embossing the charge with a stamp to form coolant-conveying channels in the charge, hardening the charge, and providing a cover on top of the channels to seal them.

Cooling device for a light-emitting semiconductor device and a method of manufacturing such a cooling device

The invention relates to an ultra fine particle sensor () for sensing airborne particles with a diameter in a range of approximately 1-500 nm. The sensor comprises an air inlet () for entry of a flow of ultra fine particles and a concentration variation section () capable of causing a variation of the concentration of ultra fine particles between at least a first concentration level and a second concentration level during at least one time interval. A particle sensing section () is provided capable of producing a measurement signal (I) varying in dependence of said variation between said first concentration level and said second concentration level. An evaluation unit () is provided capable of deriving data relating to said ultra fine particles form said varying measurement signal. As a result of the applied variation in the concentration level, data can be obtained from the resulting variation of the measurement signal which relate to the length concentration and number concentration of airborne ultra fine particles per unit volume.

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Eindhoven, Netherlands

Johan Marra