Systems and methods to control heat distribution for a cooking device

A cooking device comprising:

• a vessel operable to receive a cooking liquid;
• one or more burners disposed below the vessel;
• and
• a fuel control system for providing fuel to the one or more burners and a corresponding heat distribution to a bottom portion of the vessel, the fuel control system including:
• a fuel valve operable to provide fuel to the one or more burners from a fuel source;
• and
• a capillary tube, containing a fluid, coupled to a heat sink in contact with a wall surface of the vessel, such that the heat sink conducts heat from the cooking liquid into the capillary tube to create a pressure on the fuel valve.

A method of heating a cooking liquid, the method including:

• receiving a set-point temperature value at a fuel control system of a cooking device;
• heating a heat sink with heat from a cooking liquid held by a vessel of the cooking device, the heat sink being in contact with a wall surface of the vessel;
• transferring the heat from the heat sink to a capillary tube to cause an expansion of a fluid inside the capillary tube;
• and
• adjusting a fuel valve of the fuel control system using the expansion of the fluid inside the capillary tube to apply pressure on a diaphragm fluidly coupled to one or more burners disposed below the vessel, an amount of fuel provided to the one or more burners by the fuel valve being responsive to heating the heat sink.