Gas grill with temperature control

A method of operating a gas-fired cooking grill, the method comprising:

• delivering gas to a gas burner configured to heat a cooking chamber of the gas-fired cooking grill via a manually adjustable first valve associated with the gas burner, the cooking chamber including a cooking grate;
• igniting the gas at the gas burner to heat the cooking chamber;
• and
• automatically controlling, using a second valve, gas flow to the gas burner via the first valve based on a desired temperature of the cooking chamber and an actual temperature of the cooking chamber by automatically adjusting the second valve using a capillary tube operatively connected to a bulb that is exposed to the actual temperature of the cooking chamber,
• wherein automatically controlling, using the second valve, the gas flow to the gas burner via the first valve includes metering the gas flow to the gas burner as a function of the actual temperature of the cooking chamber to which the bulb is exposed to maintain the desired temperature inside of the cooking chamber.

A system for operating a gas-fired appliance, the system comprising:

• a gas burner located within a cooking chamber for heating the cooking chamber of the gas-fired appliance;
• a first valve associated with the gas burner to control a gas flow to the gas burner;
• and
• a second valve configured to controllably supply gas to the gas burner via the first valve, the second valve being automatically adjustable based on a desired temperature of the chamber and an actual temperature of the chamber using a capillary tube operatively connected to a bulb that is exposed to the actual temperature of the cooking chamber, the second valve being configured to meter the gas flow to the gas burner as a function of the actual temperature of the cooking chamber to which the bulb is exposed to maintain the desired temperature inside of the cooking chamber.