Gas burner assembly

A burner assembly for a gas cooking appliance, comprising:

• a main burner assembly comprising:
• a pre-combustion chamber;
• a main flame exit port;
• and
• a transition region between the pre-combustion chamber and the main flame exit port, each end of the transition region being tapered;
• a simmer burner assembly positioned in a stacked relationship with and located below the main burner assembly, the simmer burner assembly comprising:
• a simmer burner combustion chamber;
• a simmer flame exit port;
• a flow dam ring positioned within the simmer burner combustion chamber, the flow dam ring comprising one or more ports along an upper edge of the flow dam ring, the ports configured to redistribute gas flow within the simmer burner combustion chamber;
• and
• a simmer burner venturi for introducing a gas flow into the simmer burner combustion chamber, the flow dam ring including a protruding member providing an opening for a top of the simmer burner venturi, wherein the one or more ports of the flow dam ring are positioned closer together along the upper edge of the flow dam ring in a region opposite the simmer burner venturi than in a region adjacent to the protruding member and simmer burner venturi.

A gas burner assembly for a cooking appliance comprising:

• a main burner assembly;
• a simmer burner assembly positioned in a stacked relationship with and located below the main burner assembly;
• a venturi assembly for delivering a gas flow to the main burner assembly;
• a gas valve assembly for controlling a rate of the gas flow;
• a gas boost pump configured to control a pressurization of the gas flow between the gas valve assembly and the main burner assembly;
• and
• an encoder coupled to the gas valve assembly, the encoder configured to track a position of the gas valve assembly and provide a signal to the gas boost pump for pressurization of the gas flow;
• and
• wherein the simmer burner assembly comprises a simmer burner venturi, simmer flame exit ports, and a flow dam communicatively received within the simmer burner assembly between the simmer burner venturi and the simmer flame exit ports, the flow dam comprising one or more ports along an upper edge of the flow dam,
• wherein the flow dam is configured to redistribute a gas flow mixture from the simmer burner venturi to the simmer flame exit ports in a substantially symmetrical manner, and
• wherein the flow dam further comprises a protruding member providing an opening for a top of the simmer burner venturi, the one or more ports being distributed along the upper edge of the flow dam away from the protruding member.