When cooking rice cooker, which parts can not be kept warm and damaged?
Current limiting resistor: the appearance is golden yellow or white, and the size is like the 3W resistance. It is pressed between the heating tube and the power supply to play the role of protecting the heating tube. The common current limiting resistor is 185C, 5A or 10A (depending on the power of the rice cooker). The current limiting resistor is the key element to protect the heating tube. It can be replaced by wire. At the bottom of rice cooker has a circular aluminum plate with a hole in the middle is the electric cooker main heating element is Steamed Rice he cooked in the middle heating plate has a thin aluminum sheet below is a spring inside it is a magnet magnet which is close to the bottom of the pot, the pot on it a physical properties at room temperature inside the magnet is magnetic when its temperature reaches 104 degrees is not magnetic electric cooker in the use of this principle in the circuit he drives a switch to control the time to cook in the rice cooker just work began to switch on the chassis heating electric cooker when electricity cooker chassis when the temperature reached 104 degrees magnetic loss of magnetic spring action makes the switch off this is the electric cooker in the Steamed Rice just perfect
Lever switch: the switch is entirely mechanical and has a normally open contact. When cooking, press the switch, turn on the heating pipe, and supply the heating indicator to the light. When the meal is good, the thermostat releases the lever switch and causes the contact to be disconnected. After that, the heating pipe is controlled only by the thermal switch.
Insulated switch: also called thermostat. It consists of a spring sheet, a pair of normally closed contacts, a pair of normally open contacts, and a bimetallic plate. When cooking, the temperature in the pot is increased, and the bimetallic sheet is bent upwards due to the different thermal expansion rate of the two pieces of metal sheets constituting the bimetallic plate. When the temperature reaches above 80C, the spring plate drives the normally open and normally closed contacts to be switched under the push of the double metal sheet which is upwards bent, thereby cutting off the power supply of the heating tube and stopping heating. When the temperature of the pot falls below 80C, the bimetallic plate is cooled and recovered gradually, and the normally opened and normally closed contacts are converted again, and the heating tube is connected with the power supply to heat. So repeatedly, that is, to achieve insulation effect.
The structure of the ordinary rice cooker: the ordinary rice cooker is mainly composed of a heating plate, a temperature limiter, a heat switch, a lever switch, a current limiting resistor, an indicator lamp, a socket, etc.. 1 、 heating plate: This is the main heating element of the rice cooker. This is an aluminum alloy disc with an electric heating tube, and the inner pot is placed on it. You can see it when you take out the inner pan. 2, temperature limiter: also known as magnetic steel. It is equipped with a permanent magnetic ring and a spring that can be pressed and positioned in the middle of the heating plate. When cooking, cooking press switch, magnet driven by suction lever switch the power contacts connected, when cooking Steamed Rice, bottom temperature rising, the permanent magnet suction decreases with increasing temperature, when the inner pot of water is evaporated, the temperature reached 103 + 2C, magnetic ring the suction is smaller than the elastic spring, the temperature limiter is spring, drive the lever switch, cut off power supply.
