The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 27, 2018
Filed:
Nov. 05, 2014
Koninklijke Philips N.v., Eindhoven, NL;
Johan Bernard Kuperus, Eindhoven, NL;
Johannes Tseard Van Der Kooi, Eindhoven, NL;
Bastiaan Johannes De Wit, Eindhoven, NL;
KONINKLIJKE PHILIPS N.V., Eindhoven, NL;
Abstract
In a method of monitoring pollution of an air filter (Filt) in a device in which an air flow (A) generated by a fan (F) engaged by a motor (M) passes the air filter (Filt), the pollution is determined using data representative of a pressure difference (D) over the fan (F), a pressure difference (D) over the air filter, and a motor current (I) to the motor (M). The method comprises the steps of: estimating a flow through the air filter from data representative of the pressure difference (D) over the fan (F), and the motor current (I) to the motor (M), estimating a filter resistance of the air filter from data representative of the flow through the air filter, and the pressure difference (D) over the air filter, and estimating the pollution of the air filter from data representative of the filter resistance of the air filter.