Induction cooker principle
The surface of the induction cooker is a heat-resistant ceramic plate. An alternating current generates a magnetic field through the coil below the ceramic plate. When the magnetic field lines in the magnetic field pass through the bottom of the iron pot, stainless steel pot, etc., eddy currents are generated, which quickly heats the bottom of the pot to reach the temperature of the food purpose. The countertop is a high-strength, impact-resistant ceramic flat plate (crystal glass). A high-frequency induction heating coil (ie, an excitation coil), a high-frequency power conversion device, and a corresponding control system are installed under the countertop. A flat bottom is placed on the countertop. Cooking pot. The working process is as follows: the current and voltage are converted into DC power by a rectifier, and the DC power is converted to high frequency AC power over audio by a high frequency power conversion device. The high frequency AC power is added to a flat hollow spiral induction heating coil, resulting in The high-frequency alternating magnetic field penetrates the ceramic platen of the cooktop and acts on the metal pot. In the cooking pot, a strong eddy current is generated due to electromagnetic induction. The eddy current overcomes the internal resistance of the pot to complete the conversion of electrical energy to thermal energy. The Joule heat generated is the heat source for cooking.