Patent ID: 9562681
Date: 2017-02-07
CPC Classifications: F23C,F23K

Claim:
1. A burner configured for application of electrical energy to a combustion reaction, comprising: a combustor wall disposed to at least partially bound a combustion volume to separate the combustion volume from an external volume; at least one fuel nozzle configured to output a stream of fuel into the combustion volume to support a combustion reaction in the combustion volume; at least one air flow passage configured to at least allow air to enter the combustion volume to support the combustion reaction; a dielectric body extending at least partly into the combustion volume, the dielectric body being formed from a cast refractory material; and one or more electrodes extending substantially through the dielectric body, the one or more electrodes being configured to convey electrical energy from the external volume to a location proximate to or coincident with the combustion reaction; wherein a protuberant section of at least one of the electrodes is positioned inside the combustion volume so as to be in direct contact with a flame.