1. How about an induction cooker with a concave bottom?
1. The principle of concave induction cooker is the principle of using magnetic field to induce eddy current heating, and using current to generate magnetic field through coil. When the magnetic force in the magnetic field passes through the bottom of the iron-containing pot, it will produce countless tiny eddy currents, which will make the pot itself heat at high speed, and then heat the food in the pot. Electromagnetic waves generated when the induction cooker works are completely absorbed by the shielding layer at the bottom of the coil and the iron pan on the top plate.
2. The working process of concave induction cooker is to convert alternating voltage into direct current through rectifier, and then into high-frequency alternating current exceeding audio frequency through high-frequency power conversion device, and the high-frequency alternating current is added to flat hollow spiral induction heating coil, thus generating high-frequency alternating magnetic field. Its magnetic field lines penetrate the ceramic platen of the furnace and act on the metal pot. Due to electromagnetic induction, there is a strong eddy current in the pot. When the vortex flows against the internal resistance of the pot, the conversion from electric energy to heat energy is completed, and the generated Joule heat is the heat source of cooking.
Second, how to choose a concave bottom induction cooker?
1. The concave bottom induction cooker adopts a special three-plug power supply, and the electromagnetic field is shunted by the power supply design to completely prevent electromagnetic leakage. Fake flat and concave dual-purpose induction cookers mostly use two plug-in power supplies, which cannot prevent electromagnetic leakage. Consumers can directly observe whether the power socket is a three-plug when purchasing.
The most important thing is to consider well-known brands and patented products: there are many fake induction cookers with miscellaneous brands. When purchasing, priority should be given to brands and products with strong technical background, excellent product quality and patented technology. The patented flat and concave dual-purpose induction cooker will become the mainstream of consumption.
3. The triangular metal frame of the fake inferior flat and concave dual-purpose induction cooker is mostly a fixed bracket and cannot be lifted. Made of ordinary steel, it is easy to age, rust and heat. Consumers can directly observe the tripod when buying. The tripod of the flat and concave dual-purpose induction cooker can be lifted freely, and can also be tested with a magnet. The tripod of flat and concave dual-purpose induction cooker can't be adsorbed.
Many families will buy induction cookers, and now concave induction cookers are very popular. So what about the concave bottom induction cooker? What are the selection skills? You all know these problems through the introduction of the above small series.