The heating plate of the electric heating pot is generated by the heating plate at the bottom, but how does the heating plate heat up? What is the principle? Can it be replaced? The following will introduce the knowledge about the heating plate of the rice cooker in detail.

The structure of the heating plate:

It is composed of a heating tube and an upper and lower aluminum heat-conducting sheet. Three independent tubes are wrapped in it. The heating plate and the pot body are welded into one through high-frequency brazing technology. Functional electric cooker.

The working principle of the heating plate

It is formed by a combination of a heating tube and a heat-conducting sheet, which is generated inside the heating plate. It is a U-shaped high-temperature-resistant seamless steel tube with a spiral heating wire distributed in the center of the interior, and the gap is filled with crystalline oxidation with good insulation. Magnesium powder, two sections have ceramic insulating terminals, and there are binding posts in the middle. When the electric heating wire has current passing through, the heat energy will be generated, and the heat will be transferred to the surface through the beauty powder, and then conducted to the heating plate pot. At this time, this kind of The structure has the advantages of high thermal efficiency, fast temperature rise, uniform heating and good stability. When energized, the magnesium powder is insulated, the surface is not charged, and the use is safe and reliable.

Control unit for heating plate

The heating plate is only a heating function, and it needs to be equipped with a unit to control its work and protect its safe use from being scalded. The main part of the heating plate is the thermostat, which automatically turns off the power when the temperature exceeds a safe value. When it drops to the safe data, the thermostat will be powered on, and the heating plate will continue to heat up, which can effectively protect the heating plate from overheating and being scalded.

Replacement of heating plate

The heating plate of the early rice cooker was cast with an all-aluminum process. The pot body was welded with fixing screws by a spot welding process. The heating plate was fixed on the pot body by fixing screws.

The heating plate of the current rice cooker adopts a new high-frequency brazing technology, which welds the heating plate and the pot body into a whole, with high thermal efficiency and good quality stability, which greatly reduces the occurrence of heating plate failures. But its biggest disadvantage is that the heating plate is damaged and cannot be replaced, and can only be combined with the pot body.

What are the common methods of heating plate and maintenance?

1. The power wire is disconnected. Check the power leads with the ohm stop of the multimeter.

2. The current limiting resistor is blown. This situation is more common. At this time, the resistance can be checked with the ohm stop of the multimeter. If the resistor is blown, it must be replaced with a current-limiting resistor of the same type.

3. The heating tube in the heating plate is blown. At this time, check the heating tube with the ohm stop of the multimeter. If the circuit is broken, you can only replace it with a new heating plate of the same type.

At present, heating plates are widely used in various household appliances, such as rice cookers, induction cookers, heaters, etc., which greatly enrich people's lives.