Cooking thin rice will not jump automatically.

The automatic power-off function of the rice cooker is designed for steaming rice, and the rice cooker contains a temperature-controlled switch. When cooking rice, the power contacts are kept on by the suction of the magnet steel that drives the lever switch to keep the power supply on when the cooking switch is pressed. When cooking rice, the temperature at the bottom of the pot is rising, and the suction of the permanent magnetic ring decreases with the rise in temperature.

When the water in the inner pot is evaporated, the temperature at the bottom of the pot reaches 103±2C, the suction force of the magnetic ring is less than the spring force of the spring on it, and the thermostat is topped off by the spring, driving the lever switch to disconnect the contacts before it automatically jumps. If the dilution of moisture depletion has not jumped, you need to check whether there is a foreign body stuck or temperature control switch is damaged.

Expanded information:

Rice cooker principle of operation:

Put the inner pot of the food into the heating plate, so that the bottom of the plate and the center of the heating plate in the limit of the temperature of the temperature-sensitive soft magnet. temperature-limiting soft magnet fit. Press the piano key switch, the permanent magnet below the soft magnet that rises to contact with the soft magnet; in the high point position of the soft magnet drives the internal lever action, the circuit on the lower contacts connected to the electric heating element energized heat, the food in the pot is heated to warm up.

When the temperature of the bottom of the pot reaches 103 ± 2 ℃ (this is the Curie temperature of the soft magnet), the soft magnet immediately perceive and lose magnetism, in the gravity and the internal spring *** with the role of the fall from the high point of the position, and thus drive the lever mechanism, so that the circuit on the lower contacts out of the circuit is broken, circuit breaks, the heating element is no longer heated, to achieve the purpose of limiting the temperature.

But at this time the heating plate is still in a high state of heat, its heat capacity is larger, can be on the pot of food to continue to heat for a period of time, until the food is cooked. In order to maintain the food at a suitable temperature, some rice cookers are also equipped with a small power heating line, with a bimetal thermostat to control its operating temperature.