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US 8,851,882 B2Granted
System and apparatus for applying an electric field to a combustion volume
AssigneeClearsign Combustion Corporation
InventorsThomas S. Hartwick, David Goodson, Richard F. Rutkowski, Geoff Osler, Christopher A Wiklof
Life of this patent
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Abstract
According to an embodiment, combustion in a combustion volume is affected by at least two sequentially applied non-parallel electric fields. According to an embodiment, a combustion volume is equipped with at least three individually modulatable electrodes. According to an embodiment, an electric field application apparatus for a combustion volume includes a safety apparatus to reduce or eliminate danger.
Claims15
A method, comprising:
- forming a first electric field between a first electrode and a second electrode in a combustion volume at a first modulation time by applying a first voltage to the first electrode and a second voltage to the second electrode;
- and
- forming a second electric field between the first electrode and a third electrode in the combustion volume at a second modulation time while there is a reduced or substantially no electric field formed between the first electrode and the second electrode by applying the first voltage to the third electrode, the second voltage to the first electrode, and causing the second electrode to be at an intermediate voltage;
- wherein the first voltage is a peak positive voltage and the second voltage is a peak negative voltage.
1 more element
A combustion system, comprising:
- a plurality of electrodes arranged in radial symmetry around an axis defined by a burner;
- a controller configured, at a first moment of a periodic cycle, to apply a maximum voltage to a first one of the plurality of electrodes, a minimum voltage to a second one of the plurality of electrodes, and to cause a third one of the plurality of electrodes to be at neither the maximum voltage nor the minimum voltage.
Dependencies are inferred from the claim text.