The electric kettle was born in Chicago 189 1. With the development of science and technology, fast, safe, convenient and full use of energy has become the main feature of the kettle, and the British who love tea have since fallen in love with her. In 2 1 century, it has become a global bestseller. The electric kettle adopts steam intelligent induction temperature control, which has the functions of automatic power off after boiling and preventing dry burning and power off. With the needs of life, the current electric kettle is also developing in the direction of multi-function, such as anti-leakage, anti-scald, water locking and so on. Electric kettle has the advantages of fast heating speed, good insulation effect, strong filtering function and many styles. Working principle of electric kettle: The bimetal of steam temperature sensing element is deformed by the steam generated when water boils, and the power switch is pushed by the deformation through the lever mechanism, so that the electric kettle will automatically cut off power after water boils. Its power failure can't reset itself, so the kettle won't automatically reheat after power failure.
The working principle of the electric kettle is that the steam generated when the water boils deforms the bimetal of the steam temperature sensing element, and the power switch is pushed by the deformed lever principle, so that the electric kettle is automatically powered off after the water boils. Its power failure can't be automatically reset, so the kettle won't be automatically reheated after power failure.
Using PTC heating element instead of heating tube can effectively prevent the fire danger caused by dry burning. The dry burning temperature of PTC heating element can be set at any temperature between 150℃ and 250℃. When the temperature reaches the set temperature, the resistance of PTC element increases rapidly, and the heating power drops sharply, keeping its temperature at the set temperature and not rising any more. The automatic temperature control performance of PTC heating element is absolutely reliable. It controls the temperature through the change of resistance in PTC body, not through any contact. So many high-grade electric kettles use PTC heating elements. However, many electric kettle designers are not used to using PTC heating elements, and PTC is expensive and bulky, so its application is limited.
PTC heating element has great advantages in heat preservation of electric kettle. The insulation power of the electric kettle is relatively small, and the use of PTC heating elements will not increase the cost. PTC heating element has the function of preventing dry burning, and the dry burning power is about one tenth of that of boiling water. When the temperature control element fails, the temperature of PTC itself remains low, so there is no danger.
Which brand of electric kettle is good? 1. Supor electric kettle (Supor is the best-selling brand of cookware and small kitchen appliances in China, focusing on liner technology for 20 years and devoting itself to liner technology reform. )
2. Midea Electric Kettle (Midea Group, founded in 1968, is a large-scale comprehensive enterprise group focusing on household appliances manufacturing, with three listed companies: Midea Electric Appliances, Little Swan and Ling Wei Holdings. )
3. Nordic Omo (one of the most creative home appliance brands in Northern Europe). Nathome has always been sought after for its simple and avant-garde products, bright colors, personalized experience, avant-garde design and excellent quality, and is deeply welcomed by fashionistas and young people. )
4. Tiger Tiger (famous brand, top ten brands of electric thermos, Japan 1923)
5. Xiangyin (19 18, the leading Japanese thermos brand and the top ten electric thermos brands)
What are the precautions for purchasing an electric kettle? 1, depending on the material, although there is no problem with the plastic kettle in theory. However, if water is left in it for a long time, it will taste, and recently there are many additives in plastic, which are not as safe as stainless steel to some extent.
2. According to their own situation and actual needs, families with 2-3 people can choose 1.2L~ 1.5L electric kettle; 4-5 people can choose 1.8L~2.0L electric kettle.
3, carefully check the product identification and description, as well as product performance and parameters, such as enterprise name, address, specifications (such as capacity), model, trademark, voltage parameters, power parameters, power properties, etc. ; There should be warnings to prevent misuse and detailed usage methods.
The above is what I introduced about the matters needing attention in purchasing electric kettle. I hope I can help you. Look at the material. Although there is no problem with plastic kettles in theory, families with 2-3 people can choose 1.2L ~ 1.5L electric kettles.