COMBINED FUEL AND OXIDIZER METERING JETS, SYSTEMS, AND METHODS FOR SIMULTANEOUSLY METERING FUEL AND OXIDIZER

Combined fuel and oxidizer metering jet arrangements, systems and methods for selectively simultaneously metering the flow rate of a liquid and/or LG fuel and an oxidizer for delivery to a single or multi-fuel burner. Through the intelligent selection of specific articles and arrangements, a single type of fuel delivery conduit and mixing tube can be optimized for a variety of fuels without dynamic user modulation of oxidizer flow rates. Invention embodiments include coupled and decoupled jet-mixing tube arrangements as well as fuel jets having intrinsic oxidizer metering abilities and/or fuel jets cooperating with extrinsic structures to establish a desired oxidizer metering arrangement. Features of various embodiments include enhancements to modify the fuel-oxidizer inflow character such as velocity and/or vector as well as modify the fuel-oxidizer ratio through use of spacers for repositioning (as opposed to replacement) of the metering jet relative to a mixing tube.