Traditional pressure cookers require an induction cooker or a gas stove to provide a heat source for cooking. The electric pressure cooker is a new type of cooking appliance that combines the advantages of a conventional pressure cooker and rice cooker. Electric pressure cookers are favored by many consumers because of their safety, energy saving, automatic convenience, durability and so on. Next, we will introduce you to the principle of electric pressure cooker.
Electric pressure cooker principle: Pressure control technology: use pressure control sensor device, when the pressure in the pot exceeds the set pressure limit value, the machine will automatically cut off the power, and then reheat after the pressure is reduced to ensure that the pressure in the pot is kept constant. In the range.
Pressure limiting protection: When the pressure control device fails due to failure, the pressure continues to rise. When the pressure limiting pressure is reached, the air pressure opens the pressure limiting valve and deflates to limit the pressure rise.
Overpressure self-discharge: When the pressure control device fails for some reason, the pressure rises to the pressure limit pressure, and the pressure limiting protection device is also blocked due to failure, and the pressure continues to rise. When the danger is reached, the heating plate supported by the strong elastic mechanism It will be forced to sink, creating a gap between the inner pot and the sealing ring of the stainless steel lid. A large amount of gas is ejected from the periphery of the lid, which fundamentally eliminates the accident that the machine will explode due to excessive pressure.
Temperature limit protection: use temperature controller, power failure protection when over 150 °C, to prevent continuous heating when air burning or pressure does not reach the pressure limit, damage the machine.
Over-temperature protection: Using the over-temperature fuse, when the temperature inside the pot continues to rise and the temperature-limiting protection device fails, the over-temperature fuse is burned and the machine is automatically powered off.
Anti-blocking protection: The principle of underground pipe dredging is adopted, and the straight mesh stainless steel piece is used to completely prevent food from being clogged in the venting pipe of the float valve, resulting in poor exhaust.
Opening and closing protection: When the lid is not fastened, it can not be pressurized, and the lid is prevented from being opened after being pressurized; when the pressure in the pot is greater than 5KPa, the top of the float valve cannot be opened, and the lid is prevented from being opened when there is pressure in the pot. Cause food to rush out, causing harm to the human body.
The above is the principle of electric pressure cooker. Although the electric pressure cooker has entered the market more than ten years ago, its market size is not large. Perhaps it is because the electric force combines the dual functions of rice cooker and pressure cooker, but the consumer has already Pressure cookers and rice cookers will not actively buy electric pressure cookers.
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