1. Heating tube heating
Electric heating tubes are now widely used in cooking equipment such as rice cooker, water heater and so on. The electric heating tube is the resistance wire at the two ends of the metal tube, and the crystallized magnesia powder with heat resistance, heat conduction and insulation is filled closely around the surrounding space, and the heat is transmitted through the surrounding medium. The tubular heating element has some characteristics such as simple structure, high mechanical strength, high thermal efficiency, safety and reliability, convenient installation and long service life.
2. The heating principle of the electromagnetic furnace
The heating principle of the electromagnetic furnace is to convert the 50Hz alternating current to the alternating current of about 20kHz. The alternating current generates alternating magnetic field at the bottom of the pot, the metal pot produces eddy in the metal pot, and the high frequency eddy current is rapidly conducting and heating, realizing the conversion of the electromagnetic energy to the heat energy.
3, the principle of far infrared heating
Far infrared ray is a kind of electromagnetic wave transmitting energy. It is between the red and the invisible spectrum, so it is called far-infrared and the wavelength is between 0.47~400 m. When the far infrared line irradiates the heated object, a small part of the ray is reflected, most of which penetrates into the heated object. When the wavelength of the far infrared ray emitted is in accordance with the absorption wavelength of the heated object, the molecules or atoms in the heated object absorb the far infrared energy, producing violent vibration, Rotation and high friction between internal molecules and atoms generate heat and raise the temperature, thereby achieving the purpose of heating.
Far infrared heating does not need heat transfer medium, it has strong penetration ability. Compared with conventional conduction mode, far infrared heating has the characteristics of simple direct heat conduction and high thermal efficiency. It can barbecue food, sterilize and disinfect. It has the advantages of quick, hygienic, good quality and good taste.
Ji'nan business kitchenware has been committed to the research and production of kitchen equipment for more than 10 years. It is our responsibility to solve the problem of users' real use.