Taifu DK2-25 rice cooker temperature detection control circuit

Taifu DK2-25 rice cooker temperature detection control circuit

This is Taifu DK2-25 rice cooker temperature detection control circuit . The structure of this circuit is relatively simple. It uses a thyristor (thyristor
) to control the start-up of the rice cooker heater. AC 220 V voltage is applied to the rice cooker heater through the fuse FUI (185°C 5A) and thyristor
. The trigger terminal of the thyristor is connected to a switch contact controlled by a relay. The action of the relay will trigger the thyristor, causing the thyristor to conduct,
supply power to the heater, and start cooking. Since the rice cooker has a steaming and stewing function, it cannot completely rely on the temperature sensor at the bottom of the pot to determine whether the rice is cooked or not to
control whether to shut down. Moreover, when the water level drops to a certain level through the water level detection switch i, VT2 is turned on, and the relay K2 works, K2-I When turned on,
the alarm will activate. At the same time, due to the conduction of VT2, VTI is cut off, the relay Kl is cut off, the thyristor is cut off, the heating gas is cut off, and the cooking stops.