Definition Of Rice Cooker

Rice cooker, also known as electric cooker, rice cooker. It is a cooking utensil that converts electrical energy into heat energy. It has various operation functions such as steaming, boiling, stewing, boiling, and simmering food. It is easy to use, safe and reliable. It can not only cook food, but also keep warm, clean and hygienic to use, no pollution, save time and effort, and is one of the indispensable tools for the modernization of housework. During World War II, the common rice cookers were divided into three categories: automatic heat preservation type, timed heat preservation type and new type of microcomputer control type.

The world's first rice cooker was invented in the 1950s by the Tokyo Communication Engineering Company of Japan's Ibuka University. The invention of the rice cooker has reduced the time many families spend on cooking and has become a daily household appliance.

The original rice cooker was quite simple in design, operated with one button, and the pot was made of aluminum. Since then, the appearance design of this mechanical rice cooker has also changed a lot. Printing and cartoon patterns have been added to the original white rice cooker body. After the mechanical rice cooker, the electronic rice cooker is also on the market. They are no longer only for cooking, but also provide a variety of functions such as timing, cooking, keeping warm, and menu selection, realizing multi-purpose use in one pot. The inner tank is coated with non-stick material to ensure that it is less likely to stick to the rice and the pot when cooking. The design of the lid of the rice cooker has also changed a lot, which can more effectively preserve the water and nutrients in the food, which is not only delicious, but also more nutritious.

How it works
The main structure of an ordinary rice cooker is composed of a heating plate, a temperature limiter, a heat preservation switch, a lever switch, a current limiting resistor, an indicator light, and a socket.

Hot plate
This is the main heating element of the rice cooker. It is an aluminum alloy disc with a built-in electric heating tube, the inner pot is placed on it, and you can see it when you remove the inner pot.

Temperature limiter
Also called magnet. It is equipped with a permanent magnetic ring and a spring, which can be pressed and located in the center of the heating plate. When cooking rice, when the cooking switch is pressed, the lever switch is driven by the suction force of the magnetic steel to keep the power contacts connected. When the rice is cooking, the temperature of the bottom of the pot increases continuously, and the suction force of the permanent magnetic ring increases with the temperature. When the water in the inner pot is evaporated and the temperature of the bottom of the pot reaches 103 ± 2°C, the suction force of the magnetic ring is less than the elastic force of the spring on it, the temperature limiter is pushed down by the spring, and the lever switch is driven to cut off the power. keep warm switch.

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