How to cook rice without a rice cooker

Nowadays, everyone who makes rice has an electric rice cooker, because it is very fast to use it to steam rice. All you have to do is add appropriate amount of water, then add rice, and after pressing the button, you can wait for the rice to come out of the pot. Without an electric rice cooker, people will be at a loss as to how to add water and rice, and they cannot control the steaming time well. How to cook rice without an electric rice cooker?

After washing the rice, put it in the rice cooker (the water should be higher than the rice, the height of the water should be between the first and second joints of the bottom of your index finger. If the rice is harder, put it on the first joint. If the rice is soft, put it on the second joint).

Cover the pot, plug in the pin, press the switch, wait for the time, after the circuit breaker trips, remove the pin from the power source, simmer for a while, 5 minutes will be enough, open the lid, soften the rice, and eat it.

I have a question, how many people are dining with you? Don't fill the rice cooker with rice, or the rice will steam.

How it works

The structure of an ordinary rice cooker: An ordinary rice cooker is mainly composed of a heating plate, a temperature limiter, a heat preservation switch, a lever switch, a current limiting resistor, an indicator light, a socket, etc.

Heating plate

This is the main heating element of the rice cooker. This is an aluminum alloy disc with an embedded electric heating tube. The inner pot is placed on it and can be seen by removing the inner pot.

Temperature limiter

Also called magnetic steel. It has a permanent magnetic ring and a spring inside, which can be pressed and is located in the center of the heating plate. When cooking rice, when the cooking switch is pressed, the suction force of the magnetic steel drives the lever switch to keep the power contacts connected. When the rice is cooked, the temperature of the bottom of the pot continues to rise, and the suction force of the permanent magnetic ring weakens with the increase in temperature. When the water in the inner pot is evaporated and the temperature of the bottom of the pot reaches 103±2C, the suction force of the magnetic ring is less than the elastic force of the spring on it, and the temperature limiter is pushed down by the spring, driving the lever switch to cut off the power.

Insulation switch

Also called a thermostat. It consists of a spring sheet, a pair of normally closed contacts, a pair of normally open contacts, and a bimetallic sheet. When cooking, the temperature inside the pot rises. Due to the different thermal expansion rates of the two metal sheets that make up the bimetallic strip, the bimetallic strip bends upward. When the temperature reaches above 80 degrees Celsius, the spring sheet drives the normally open and normally closed contacts to switch under the push of the upward-bent bimetallic strip, thereby cutting off the power supply to the heating tube and stopping heating. When the temperature in the pot drops below 80 degrees Celsius, the bimetallic strip gradually cools down and recovers, the normally open and normally closed contacts switch again, connecting the power of the heating tube to heat it. Repeat this process to achieve the heat preservation effect.

Lever switch

The switch is a purely mechanical structure with one normally open contact. When cooking, press this switch to connect the heating tube to the power supply, and at the same time supply power to the heating indicator light to light it up. When the meal is ready, the temperature limiter pops down, driving the lever switch to disconnect the contacts. After this, the heating tube is only controlled by the insulation switch.

Current limiting resistor

It is mostly golden or white in appearance, about the size of a 3W resistor, and is placed between the heating tube and the power supply to protect the heating tube. The commonly used current limiting resistor is 185C 5A or 10A (depending on the power of the rice cooker). The current limiting resistor is a key component to protect the heating tube and cannot be replaced by a wire.