Gas oven temperature control system, gas oven and temperature control method thereof

Abstract

The invention discloses a gas oven temperature control system, a gas oven and a temperature control method thereof.The gas oven temperature control system comprises a burner connected with a main gas circuit and a main gas circuit electromagnetic valve; the electromagnetic valve driving circuit is electrically connected with the main gas circuit electromagnetic valve; the ignition driving circuit is connected with an igniter and drives the igniter to heat and ignite; and the micro-control unit drives the ignition driving circuit to work and carries out current sampling on the igniter through the current sampling circuit, and the micro-control unit controls the main gas circuit electromagnetic valve to connect the gas into the combustor for ignition. The gas oven comprises the temperature control system of the gas oven. According to the temperature control method, the micro-control unit is used for controlling the hot surface igniter to heat up, and when the temperature of the hot surface igniter reaches the ignition condition, the main gas circuit electromagnetic valve conducts fuel gas into the combustor for ignition and combustion. The control precision is higher, ignition, temperature and safety of the gas oven are accurately controlled, the structure is simplified, and the cost is reduced.

Description

technical field [0001] The invention relates to the technical field of baking equipment, in particular to a gas oven temperature control system, a gas oven and a temperature control method thereof. Background technique [0002] A gas oven is an oven that burns gas as a heat source for baking. The performance of the oven depends on the accuracy of temperature control. Existing gas ovens generally use a liquid expansion thermostat and a bimetal control valve for controlling the gas supply to control the temperature. When the temperature in the gas oven exceeds the set temperature, the liquid expansion thermostat will be triggered to issue a control The signal is sent to the bimetal control valve, the bimetal control valve is closed, the gas supply is stopped, and the heating of the oven is stopped. When the temperature in the gas oven is lower than the set temperature, the liquid expansion thermostat will be triggered to send a control signal to the double The metal sheet con...

AI Technical Summary

Problems solved by technology

The existing control mode realizes the control of ignition and opening and closing valves through the mechanical deformation of the metal sheet when it is heated. After a period of use, the metal sheet is prone to metal fatigue and affects the opening of the valve. The control accuracy is low and the use time is short.

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