Patents by Inventor Richard PFÜLLER

Richard PFÜLLER has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method and device for flame signal detection
    Patent number: 10704785
    Abstract: The invention proposes a method for the flame signal detection by means of an ionization electrode (15) 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 (15), 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.
    Type: Grant
    Filed: October 26, 2016
    Date of Patent: July 7, 2020
    Assignee: Viessmann Werke GmbH & Co. KG
    Inventors: Martin Ries, Arno Clemens, Richard Pfüller, Sebastian Hack
  • METHOD AND DEVICE FOR FLAME SIGNAL DETECTION
    Publication number: 20180372316
    Abstract: The invention proposes a method for the flame signal detection by means of an ionization electrode (15) 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 (15), 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.
    Type: Application
    Filed: October 26, 2016
    Publication date: December 27, 2018
    Inventors: Martin RIES, Arno CLEMENS, Richard PFÜLLER, Sebastian HACK