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 it. 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.
Chinese name: electric kettle mbth: birthplace of electric kettle: Chicago Date of birth: 189 1 Type, feature description, principle, composition, working principle, main advantages, fast heating, strong filtration, full functions, diverse styles, guide to purchase, instructions for use, precautions and maintenance Although the functions of electric kettle are basically the same, from the inside, (1) Whistle electric kettle. It is drawn from aluminum plate, and the electric heating element adopts immersed nickel-plated steel sealed electric heating tube. The electric heating tube is installed at the bottom of the kettle, and the joint with the kettle body is padded with a heat-resistant sealing ring to prevent water leakage. The lid of this electric kettle is equipped with a strip-shaped vibrating spring self-buzzer (air flow vibrator), which will sound when the water temperature reaches 100℃ or above. Because this kind of kettle generally has no limited temperature controller, the power supply must be cut off manually. This kind of electric kettle is simple in structure, low in price and widely used in families. (2) Dry-burning whistle electric kettle. Based on the design principle of whistle electric kettle, an automatic temperature limit controller (mainly bimetal thermostat or magnetic thermostat) is added. When the water boils, the generated steam deforms the bimetal of the temperature sensing element and drives the microswitch to cut off the power supply, which greatly improves the safety performance of the electric kettle. The temperature limiting controllers in some high-quality electric kettles adopt a new type of heat-sensitive material (automatic constant temperature control switch) similar to memory alloy. When the water level in the kettle is lower than the electric heating pipe (the temperature of the electric heating pipe exceeds 100℃), the automatic constant temperature control switch will automatically cut off the power supply to protect the electric kettle from being scalded. (3) Plastic electric kettle. The biggest feature of plastic electric kettle is portability, safety and reliability. The power signal indicator lamp arranged in the kettle body can conveniently observe the electrified state, the upper and lower split structure can rotate 3600 degrees, and the melting point of the food-grade sanitary plastic material used in the kettle body is above 200℃. This new electric kettle adopts hidden stainless steel electric heating plate and is equipped with steam induction control switch, which has multiple protection functions such as automatic power off, dry-burning power off prevention, thermal fuse protection and grounding protection. Description: 1) Double-layer heat preservation can keep the water temperature longer; Electric kettle 2) The shell is not hot; 3) Seamless stainless steel liner; 4) The water outlet is locked to prevent dumping and scalding; 5) No touch power switch, which is safer to use; 6) Non-slip handle, which is more convenient to use; 7) Super large water inlet, which is convenient for water inlet and cleaning; 8) Temperature-sensitive insulation, without manual operation; 9) Waterproof power box. Principle: Most kettles with heat preservation function have two heating pipes, and one heating pipe is controlled by a heat preservation switch, allowing users to control whether to keep warm. The insulation power is generally below 50W, and the power consumption per hour will not exceed 0. 1 kWh. Key components: The key component of the electric kettle is the thermostat. The quality and service life of the thermostat determine the quality and service life of the kettle. Thermostats are divided into: simple thermostat, simple+jump thermostat, waterproof and dry-burning-proof thermostat. Consumers are advised to buy waterproof, dry-burning-proof constant-temperature electric kettle. Other components: In addition to the key thermostat, the composition of the electric kettle must also include these basic components: kettle button, kettle top cover, power switch, handle, power indicator light, heating part, etc. Working principle After the electric kettle is connected to the power supply for about 5 minutes, the steam deforms the bimetal of the steam temperature sensing element and pushes the switch contact to disconnect the power supply. If the steam switch fails, the water in the kettle will burn until it is dry, and the temperature of the heating element will rise sharply. There are two bimetals at the bottom of the heating plate, which will rise sharply due to heat conduction, expand and deform, and disconnect the power supply. Therefore, the safety protection device of electric kettle is designed very scientifically and reliably. This is the triple safety protection principle of electric kettle. Main advantages: fast heating "fast heating" is the most basic requirement of electric kettle: the original heating coil is transformed into a wider heating chassis, which is more beautiful and practical and solves the problem that scale is difficult to clean; Secondly, the heat conversion efficiency is high, and 0.5 liter to 1 liter of water can be boiled in 3-5 minutes. Filtering is powerful, which is the consensus of all people, so it is necessary to install several "safety nets" in the tank filter. The key parts such as the bottom of the pot and the water outlet can be described as "organs", and several filter screens are installed to remove scale and purify water. The simple function of boiling water can no longer meet the daily needs, and the set electric kettle has become popular. In addition to the electric kettle, there are also special appliances such as tea sets, which boil water, make tea and drink coffee in one go, reflecting the care from beginning to end. Finally, of course, humanized design is also indispensable. The design of the kettle body is more concise and gorgeous, and the design of the built-in power cord avoids triviality and conforms to the fashion style concept of modern home; The non-slip handle is convenient and safe, showing consideration and ingenuity; The interesting ringing of the bell after the water is boiled adds a lot of interest to life. With the development of various styles of electric kettle, in addition to the continuous improvement of functions, the appearance of electric kettle is also constantly improving. From the previous round flat appearance to the cylindrical appearance, and then to the cylindrical appearance, from ordinary stainless steel to brushed material, as well as plastic material, the beautiful appearance of electric kettle is also decorating our lives. Shopping guide 1) Look at the materials. Although there is nothing wrong with the plastic kettle in theory, it will smell when water is left in it for a long time, and there are many additives in plastic, which is not as safe as stainless steel to some extent. Electric kettle 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 signs and descriptions of the products, as well as the performance and parameters of the products, such as enterprise name, address, specifications (such as capacity), model, trademark, voltage parameters, power parameters, power supply properties, etc. There should be warnings to prevent misuse and detailed usage methods. 4) Look at the appearance of the electric kettle. Products with thicker plastic or stainless steel shell and smoother, brighter and more beautiful appearance will have better quality. On the contrary, if the plastic parts are obviously rough and uneven, and there is sound inside when shaking, it may be a product with poor technology and poor quality. In addition, the electric kettle is an electric appliance for water injection. Pay special attention to the sealing condition when buying to see if there is water leakage. If it is an electric kettle with exposed heating tubes inside, pay attention to whether the heater and kettle body are installed firmly when buying. 5) Buy an insulated electric kettle and a quick electric kettle with temperature control function. Some new electric kettles generally have temperature control function, and the power supply will be automatically cut off after the water is boiled, which can effectively prevent dry burning caused by unmanned operation and avoid various accidents. 6) When buying an electric kettle, you can add a proper amount of water for trial burning. Some products with high nominal power become hot quickly, and consumers need to pay attention to whether the household electricity consumption can meet the requirements when choosing. Products with temperature control function should automatically cut off power after water is boiled, and consumers can choose according to their needs. 7) When consumers buy electric kettles, they must check whether the purchased electric kettles have CCC certification marks. 8) When purchasing an electric kettle, it is best to listen to the word-of-mouth of users around you. Small household appliances, such as electric kettles, are not high in technology, and there is no need to be superstitious about some big brands. Although the quality inspection of big brands is strict, the advertising investment of big brands is high, and the corresponding product prices will be higher. 9) If there are old people and children at home, it is recommended to choose an insulated electric kettle. This kind of kettle has a special anti-scalding, anti-dumping and anti-overflow design to protect the elderly and children. 10) There are three kinds of electric kettles: ordinary electric kettles (without temperature control device), automatic temperature control electric kettles and automatic electric kettles with air pressure water supply device (the power supply can be automatically cut off after the water is boiled, or the temperature can be automatically kept). The second kind of kettle is generally available in the market. I like making tea, coffee, milk and so on. Often. My family is small, and there is little water. It is best to buy a single-layer or double-layer ordinary electric kettle or an automatic temperature control electric kettle. If the family has a large population and needs a lot of boiling water, you can buy an automatic or fully automatic electric kettle with pneumatic water supply device. Non-automatic ordinary electric kettle, or single-layer and double-layer barrel electric kettle, has no temperature control device, simple structure, low price and convenient maintenance, but it is inconvenient to use. After the water boils, you need to manually unplug and cut off the power. Automatic temperature control electric kettle, automatic electric kettle with pneumatic water supply device, is expensive and difficult to maintain, but it can automatically cut off the power supply after boiling, without manual operation and supervision, and can automatically keep warm, which is convenient to use, safe and reliable. 1 1) look at the electrical performance: the electric kettle is an electric appliance that works with water. Pay special attention to its electrical performance when purchasing to ensure no leakage. 12) See the power cord connector: the connection between the power cord connector and the kettle body should be reliable, elastic and flexible. 13) Look at the water supply switch: When purchasing an automatic electric kettle with an air pressure water supply device, check whether the locking switch of the boiling water supply button is flexible, the pressure of the boiling water supply button should not be too high, and the outer cover, inner pot and inner container should be flexible, easy to assemble and disassemble and have good sealing performance. Practical value of electric kettle The practical value of electric kettle is mainly reflected in its fast heating speed. Generally, it only takes 5-8 minutes to boil a pot of water. The electric kettle can be said to be an energy-saving and electricity-saving rapid heating appliance. Then it is convenient to use, and the water is automatically turned on and off to ensure the safety during use. It is suggested that all stainless steel quick electric kettle be used in ordinary families to avoid the safety problem of plastic kettle. Electric kettles are also a big market in the gift industry. Almost every unit will choose some relatively cheap electronic gifts and small household appliances as employee welfare gifts at the end of the year. Electric kettle is a small kitchen appliance gift selected by some units. Instructions for use (1) Fill the kettle with water, first connect the power cord to the kettle body, and then plug the other end into the power socket for heating. For electric kettle with switch or automatic electric kettle, unplug the switch and connect the kettle to the power supply. Be careful not to turn on the power before adding water, otherwise it will burn out the heater or cause dangerous accidents. (2) The water injection shall not exceed the highest water level line, so as to avoid the liquid overflowing the kettle when boiling. When using ordinary electric kettle, it is not advisable to inject too little water, otherwise it will burn out soon. If the electric heating tube burns out in water, it is easy to burn out. (3) The rated power of electric kettle is generally large, so the capacity of power plug, socket and power cord should be properly selected, which should be above 10- 15 amp, and should be used independently to ensure completeness. (4) Always keep the power plug, socket, power cord and automatic switching device of the electric kettle dry and clean, and do not shower and rinse with water, so as to avoid failure and leakage caused by moisture destroying electrical insulation. (5) Using an electric kettle that is still connected to the power supply after boiling is easy to cause injury. Unplug the plug first, cut off the power supply and then use boiled water to ensure safety. Safety protection 1) dry burning automatically cuts off power, and boiling water automatically cuts off power, which is safer; 2) Practical plastic parts should be PP food-grade materials; 3) The power cord shall be high temperature resistant copper wire. Caution: Do not fill water beyond the highest water level line to avoid the liquid overflowing the kettle when boiling. The rated power of electric kettle is generally large, and the capacity of power plug, socket and power cord should be properly selected, which should be above 10 amp and used independently to ensure safety. Always keep the power plug, socket, power cord and automatic switching device of the electric kettle dry and clean, and do not shower and rinse with water to avoid failure and leakage caused by moisture damage to electrical insulation. Using an electric kettle that has just been boiled and connected to the power supply to flush or make drinks is easy to cause injury. Unplug the plug first, cut off the power supply and then use boiled water to ensure safety. Every time the electric kettle cooks milk, coffee and the like, a layer of residue and dirt may be attached to the electric heating tube, so it should be carefully cleaned after each use. After a long time of use, some scale or other dirt will be attached to the surface of the kettle or electric heating tube, so it should be checked and cleaned regularly. Do not immerse the automatic electric kettle in water when cleaning, so as not to affect the electrical insulation of the automatic switch. When using an electric kettle, it must be filled with water first and then electrified. It is forbidden to electrify first and then inject water. Water should be injected into the kettle at least at the lowest water level, but it cannot exceed the specified maximum water level. Don't cook anything with acid, alkali and salt in the electric kettle, so as not to corrode the kettle body and heater. Always remove the scale or other stains on the electric heater, otherwise it will affect the thermal efficiency and service life of the electric heater. When the electric kettle is not in use, it should be placed in a dry place to avoid moisture and reduce its safety performance. It is necessary to conduct a comprehensive inspection of the plug and power cord; If damage is found, it can only be repaired or replaced at the repair point designated by the manufacturer. The electric kettle can be connected with alternating current, and its socket should be grounded. Never pull, press or let it droop along the top. At the same time, stay away from heat and moisture sources! Maintenance work 1) In order to prolong the service life of the kettle, the mineral deposits in the kettle should be cleaned regularly. 2) When cleaning, be sure to disconnect the power supply first. 3) Please don't soak the kettle base in water. 4) Pour vinegar and water into the kettle according to the ratio of 1: 2, then turn on the power supply, let the kettle work and wait for it to jump automatically. 5) Keep the mixed liquid in the kettle for 24 hours, then pour out the mixed liquid and fill it with clear water to a certain position before operation. 6) pouring water will take away scale and vinegar essence. Finally, clean the pot with clean water, and repeat the above operations if necessary. 7) If the electric kettle breaks down during use, take the kettle out of the heating chassis, pour out the water in the kettle, then let it cool to normal temperature, and then carry out fault detection or cleaning. Descaling method of electric kettle: how to descale? According to many years' experience in product development, this paper introduces several commonly used and effective descaling methods: First, vinegar is the simplest and most practical method. As we all know, the main component of scale is carbonate such as calcium carbonate, and acetic acid in vinegar will react with it to generate water-soluble substances, minerals and carbon dioxide gas. You can buy white vinegar in general supermarkets, put it in a kettle with a scale of 10%, and then add water to boil it. Second, scale remover There are cleaning agents or powders specially used to remove scale on the market. As long as you buy this descaling product directly, put it in the inner container of the electric kettle and soak it gently in the water, the scale can be easily removed, which is very convenient. Third, baking soda descaling The heating plates of general electric kettles are all made of aluminum. When the electric kettle boils water, it is easy to form scale. Generally, we can put 1 teaspoon baking soda and boil it for a few minutes, and the scale will be removed. Or you can pour about 500g of baking soda water with the concentration of 1% and gently shake it to remove the scale. Fourth, the lemon is peeled to buy a slice of lemon and cook it in an electric kettle. After the water is boiled, let it stand for a while. When the water is cold, pour it out, and the scale inside can be removed. This method is reliable and very convenient and healthy. Tips for using electric kettles Most electric kettles are heated by heating the chassis. The electric heating chassis and the kettle bottom are welded together. One side of the pot bottom is located in the pot, while the heating chassis and its conductive terminals are located outside the pot. The inside and outside are mostly bolted, and the sealing and leakage are realized by the rubber ring between the electric heating tube and the pot body. Although this kind of sealing apron has high temperature resistance above 100℃, it will still age and lose its elasticity when the electric kettle is used for a long time, resulting in water leakage, carbonization, short circuit, melting of kettle metal, fuse blowing and other failures. After each water injection, users should carefully check whether there is water leakage around bakelite sockets before electrifying. When the fastening bolt of the power cord is loose, it must be tightened in time to hold down the apron to prevent leakage; When the sealing apron loses its elasticity due to aging, it should be replaced with a new high-temperature sealing apron immediately to ensure full use.