Automatic temperature control and timing type electric oven is composed of furnace body, heater, thermostat, timer, converter switch, indicator lamp, baking tray, baking net, handle fork and so on.
1. Furnace
The furnace body of automatic temperature regulation and timing electric oven is composed of shell, internal chamber and furnace door. Control the chamber on the right or bottom of the furnace for thermostat, timer, switch and indicator. The shell is coated with oxidation-proof ammonia baking paint. The interior cavity surface is chrome-plated to improve the thermal reflectivity.
2. Heater
The heater of automatic temperature regulating timing electric oven generally uses quartz glass pipe electric heating element or steel pipe electric heating element, quartz glass pipe electric heating element is made of spiral electric heating wire installed in milky white quartz glass pipe. The electric heating wire is kept in the center of the tube by the bracket, and the temperature of the quartz glass tube increases after energizing, which becomes a far-infrared radiation heat source. This electric heating element has a small heat capacity, fast heating up, high thermal efficiency, but easy to break.
3. Temperature regulator
The thermostat of automatic temperature adjustment and timing electric oven can use either flash thermostat or slow thermostat. Flash thermostat is much better than slow thermostat, because flash type movement, static contact separation and contact are relatively fast, not easy to cause electric arc, the service life is longer. But at present, most of the electric ovens produced in China use slow type thermostat.
5. Timer
The timer of the automatic temperature control timing electric oven generally adopts the mechanical timer, which is composed of the walking system and the contact switch. Its structure principle is basically the same as the electric fan timer.
6. Typical circuit of visual temperature regulating and timing electric oven
The typical circuit of automatic temperature regulating timing electric oven is composed of upper heater, lower heater, thermostat, timer, converter switch, neon tube, current limiting resistance, power cord, power supply, plug, etc. In general, the upper and lower heaters are used in parallel.
