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:
Jul. 07, 2020
Filed:
Oct. 26, 2016
Viessmann Werke Gmbh & Co. KG, Allendorf, DE;
Martin Ries, Frankenberg, DE;
Arno Clemens, Allendorf, DE;
Richard Pfüller, Dillenburg, DE;
Sebastian Hack, Wetter, DE;
Viessmann Werke GmbH & Co. KG, Allendorf, DE;
Abstract
The invention proposes a method for the flame signal detection by means of an ionization electrode () protruding into a combustion zone of a burner, comprising the steps: detecting a first signal, which is dependent on an ionization current flowing off the ionization electrode (), generating a second signal which has a predetermined periodic course, generating a third signal by adding the first signal and the second signal, comparing the third signal with a first threshold value and generating a fourth signal on the basis of the comparison of the third signal with the first threshold value, comparing the third signal with a second threshold value different from the first threshold value and generating a fourth signal on the basis of the comparison of the third signal with the second threshold value, and determining an operating variable of the burner on the basis of at least one of the fourth signal and the fifth signal. The invention additionally proposes a corresponding device for the flame signal detection.