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公开(公告)号：US20210254830A1
公开(公告)日：2021-08-19
申请号：US17269653
申请日：2019-08-20
发明人： Ulrich Höflinger , Wilhelm Laux
摘要： A method for regulating a gas burner, wherein the gas burner has a combustion air supply fan whose rotational speed can be set variably, has the following steps:—operating the fan and detecting a fan rotational speed (nVBL);—changing the fan rotational speed;—measuring an ionization voltage (UION) which correlates with an ionization flow in a flame region of the gas burner;—finding a minimum of a gradient of the measured ionization voltage at the current fan rotational speed;—determining an operating point by measuring the current ionization voltage and storing as an operating point;—while the burner is operating, continuously measuring the current ionization voltage;—determining a deviation between the currently measured ionization voltage and the operating point;—checking whether the deviation (Delta UION) is within a predefined limit (UY) and carrying out a case differentiation: +if the deviation is within the predefined limit (UY), continuing the continuous measurement of the current ionization voltage; +if the deviation is not within the predefined limit (UY), repeating the method from the above change in the fan rotational speed.
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公开(公告)号：US11761629B2
公开(公告)日：2023-09-19
申请号：US17269653
申请日：2019-08-20
发明人： Ulrich Höflinger , Wilhelm Laux
CPC分类号： F23N5/123 , F23D14/34 , F23N2005/181 , F23N2229/12 , F23N2233/08
摘要： A method for regulating a gas burner, wherein the gas burner has a combustion air supply fan whose rotational speed can be set variably, has the following steps: —operating the fan and detecting a fan rotational speed (nVBL); —changing the fan rotational speed; —measuring an ionization voltage (UION) which correlates with an ionization flow in a flame region of the gas burner; —finding a minimum of a gradient of the measured ionization voltage at the current fan rotational speed; —determining an operating point by measuring the current ionization voltage and storing as an operating point; —while the burner is operating, continuously measuring the current ionization voltage; —determining a deviation between the currently measured ionization voltage and the operating point; —checking whether the deviation (Delta UION) is within a predefined limit (UY) and carrying out a case differentiation: +if the deviation is within the predefined limit (UY), continuing the continuous measurement of the current ionization voltage; +if the deviation is not within the predefined limit (UY), repeating the method from the above change in the fan rotational speed.
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