Ebm-Papst Landshut Gmbh

Jens Hermann

Enno Jan Vrolijk

Hans-Joachim Klink

Markus Weingart

Stephan Wald

Bernhard Simon

Hartmut Henrich

Jan Dannemann

Stephan Michael

Andreas Kerschreiter

A method for evaluating a quasi-stationary pressure difference detectable by a sensor at a gas boiler. The gas boiler has a mixing device (), a fan (), a main flow regulator (), a control valve () and a safety valve (). The sensor detects a differential pressure between a pressure (p) at a measuring point upstream of the main flow regulator () and downstream of the control valve () and a reference pressure (p, p) at a reference measuring point. The sensor transmits a signal to an electronic evaluation system. The electronic evaluation system compares the differential pressure during a pre-purge phase, wherein the safety valve () is closed, with the differential pressure after the pre-purge phase and detects an error by the comparison.

Method for evaluating a quasi-stationary pressure difference detectable by a sensor at a gas boiler, and associated gas boiler

A method of monitoring a flame during gas combustion in a combustion chamber (). A heating unit () has an evaluation unit, an extraction line () and a sensor (). The sensor () is arranged in the extraction line () to detect thermal substance properties of the gas. Thus, it is determined if it is ambient air (B), a non-combusted fuel-air mixture (C) or particularly the hydrogen-air mixture, or a waste gas (A) generated during combustion. The sensor () transmits a recorded measured value to the evaluation unit. The evaluation unit uses the measured value to determine whether ambient air (B), the non-combusted fuel-air mixture (C), or waste gas (A) is flowing through the extraction line () and thereby determines whether the flame is burning or extinguished.

Method and heating unit for flame monitoring during gas combustion

A method for regulating a gas mixture formed from a gas and a fuel gas in a fuel gas-operated heating appliance, wherein the gas mixture is created by providing and mixing a gas quantity by way of a first control element and a fuel gas quantity by way of a second control element, wherein a microthermal gas sensor and a gas mixture sensor are used and sensor signals are relayed to a controller, and wherein upon change in the detected sensor signal [of the] gas sensor the newly detected sensor signal of the gas sensor is compared to reference values which have been measured in the laboratory and saved in a table of values in the controller and from this a target value of the sensor signal of the gas mixture sensor is determined without a mixture ratio of the gas mixture composed of fuel gas and gas being changed.

Method for regulating a gas mixture by using a gas sensor and a gas mixture sensor

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Osnabrück, Germany

Jens Hermann