ClearSign Technologies has been granted a patent for a burner that utilizes a flame sensor to detect changes in permittivity, capacitance, or resistance in a flame region. The system includes a control circuit and plasma generator to stabilize combustion, enhancing flame detection and ignition control. GlobalData’s report on ClearSign Technologies gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on ClearSign Technologies, Photovoltaic drones was a key innovation area identified from patents. ClearSign Technologies's grant share as of July 2024 was 37%. Grant share is based on the ratio of number of grants to total number of patents.
Flame detection and stabilization in combustion systems
The granted patent US12050151B2 describes a burner system that integrates a fuel source, an oxidant source, and a control circuit to manage combustion effectively. The burner features a plenum wall that facilitates the mixing of fuel and oxidant, leading to the formation of a fuel-oxidant mixture. An ignition source is positioned at the end of the air plenum to ignite this mixture, creating a flame in a designated flame region. Adjacent to this region are two electrodes that generate a time-varying electromagnetic field, which is crucial for monitoring the flame's characteristics. The control circuit processes signals from the electrodes to determine changes in electrical permittivity, allowing it to assess the presence or absence of the flame and adjust the ignition source accordingly.
Additionally, the control circuit can modify the fuel supply rate based on the identified flame characteristics, ensuring safety and efficiency. The system is designed to produce output signals that indicate the strength of the flame, with options for both binary and analog outputs. The excitation signal used to create the electromagnetic field can be controlled in terms of shape, magnitude, and frequency, with specific configurations such as square or sinusoidal waves. The electrodes may be patch electrodes or connected to conductive structures within or around the plenum, enhancing the system's versatility. Overall, this burner design aims to improve flame monitoring and control, contributing to safer and more efficient combustion processes.
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GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.
