The heating element of the electric cooker has an electric heating tube type heating plate and a PTC element heating plate. The electric heating tube type heating plate has good insulation, corrosion resistance, thermal conductivity and mechanical strength, long life and high efficiency; the PTC element heating plate has the characteristics of positive temperature resistivity and automatic temperature control, high efficiency and no open flame.
The rice cooker has high safety and a fast temperature rise, which is less affected by power fluctuations.
The temperature control components of the rice cooker have a bimetal temperature control system and a magnetic material temperature control system, and the former is not as safe and reliable as the latter. The rice cooker is divided into a combined type and a monolithic type according to the structure of the pot body; according to the pressure in the pot, it is divided into a low pressure type (0.04 MPa), a medium pressure type (0.1 MPa) and a high pressure type (0.15 to 0.2 MPa); The way to heat food is divided into direct heating and indirect heating.
Since the 1950s, rice cookers have become popular. In 1986, the output of rice cookers in the United States was 5.9 million, and that of Japan was 6.902 million. In 1987, the output of rice cookers in China reached 10.263 million. In the mid-1980s, electronic rice cookers equipped with microprocessors began to be put on the market, which can control the cooking elements (such as firepower, temperature, time, heating mode, etc.) to achieve the best cooking results.
Changchun Realpoo Photoelectric Co., Ltd. , https://www.optics-realpoo.com