Induction cooker (also known as induction cooker) - is the product of the modern kitchen revolution, is no need for open-flame or conduction heating of the fireless cooking kitchen, completely different from the traditional all fire or no fire conduction heating cookware (stove).
Second, the working principle of induction cooker
Induction cooker as a new type of cookware market. It breaks the traditional open-flame cooking method using magnetic field induction current (also known as eddy current) heating principle, induction cooker is through the electronic circuit board component of the alternating magnetic field, when the bottom of the pots and pans containing iron placed on the stove surface, the pots and pans that cut the alternating magnetic lines of force in the pots and pans at the bottom of the metal part of the alternating electric current (i.e., eddy current), eddy current so that iron molecules of pots and pans in high speed and irregular movement, molecules collide with each other and friction and heat generation (therefore: heat generation). Generate heat energy (so: induction cooker cooking heat source from the bottom of the pots and pans rather than the induction cooker itself heat conduction to the pots and pans, so the thermal efficiency than all the efficiency of the stove are nearly 1 times higher) so that the appliance itself high-speed heating, used to heat and cook food, so as to achieve the purpose of cooking. With fast heating, high thermal efficiency, no open flame, no smoke, no harmful gases, no heat radiation to the surrounding environment, compact size, good safety and beautiful appearance and other advantages, can complete the majority of the family's cooking tasks. Therefore, in some countries where induction cooktops are more popular, they are known as the "God of Cooking" and "Green Stove".
Three, the main components of the induction cooker
The induction cooker is composed of two main parts: the electronic circuit part and the structural packaging part.
① Electronic circuit part includes: power board, main board, light board, coil disk and thermal support, fan motor and so on.
② Structural packaging part includes: ceramic board, plastic top and bottom cover, fan blade, fan bracket, power cord, manual, power sticker, operation film, certificate of conformity, plastic bag, shockproof foam, color box, bar code, cartoon box.
Tianchi induction cooker and other brand parts of the advantages and disadvantages of the comparison
Main original TIANCHI induction cooker General induction cooker
Chip (CPU) microcomputer central processor South Korea Samsung chip, an independent program, the more you use the more stable, can not be deciphered Modern chip, the industry is common
IGBT Germany Siemens, the United States, fast; the different power to use different current requirements (such as: 25%, 25%, 25%, 25%, 25%, 25%, 25%, 25%, 25%, 25%, 25%, 25%). Current requirements (e.g., 25N and 40N) Domestic general-purpose parts, false power instead of high-power, deceiving consumers
Voice chip industry-leading, full coverage of each operating function less
Plastic shell using VO @ HB formula material, high flame retardant wear good general ABS757 or low-grade PP material, even with industrial refurbishment materials
Automatic tracker The use of high sensitivity thermistor detection, rapid feedback state to the CPU, to achieve full protection using high-precision +-1% thermal sensors General use of +-5% or thermal sensors
Porcelain plate Regardless of the high and low-grade machine, all the porcelain plate over the uranium, so that the porcelain plate is more durable, generally do not uranium
Polyester All the imports of adhesive, not easy to crack, seepage of water, generally half the cost of the domestic glue
Polyester All imported adhesive, not easy to crack, seepage of water, generally half the cost of domestic adhesive
Color screen VFD display All digital design, functionality suitable for induction cooker supporting the display, no one as a hidden function General parts, low cost
Four, induction cooker and other stoves comparison
Induction cooker is really belong to the kind of both safe and practical environmentally friendly green appliances.
1, more energy-saving (high thermal efficiency)
The advantages of induction cooktops are first shown in its high thermal efficiency. As a high-tech products advocating "green kitchen culture", the application of the principle of induction cooker is the current through the coil to generate a magnetic field, the magnetic field within the magnetic lines of force through the bottom of the material containing iron (iron pots, stainless steel pots, enameled pots, etc.), prompting high-speed movement of the iron molecules to produce countless small eddy currents, and therefore high thermal efficiency. In contrast, traditional stoves, such as electric stoves, LPG stoves, gas stoves and rice cookers, the heating principle is the first red bottom of the vessel directly heating the food in the pot, and part of the heat consumption in the combustion of air, the thermal efficiency of 40% -65% between, the amount of thermal energy consumption, slow cooking. The thermal efficiency of induction cooktop is generally higher than 80%, and the thermal efficiency of TIANCHI induction cooktop can reach 93%. It takes 9 minutes to boil a kettle of water on a traditional stove with open fire, and only 2~3 minutes to put it on an induction cooktop, which greatly saves energy.
2, safer (no open flame cooking benefits)
Induction cooker use effect is completely different from the gas stove, in the process of using that does not produce open flame, the surface itself is not hot, there is no higher than 250 ° C within the body of the high-temperature parts, will not occur burns. At the same time, the heat-resistant ceramic plate on the surface of the induction cooker, the metal pots and pans placed on it must have enough contact area to generate heat, such as the contact area is too small, the electromagnetic induction will not occur, of course, it is impossible to heat. Even if the gasoline will be spilled on the surface of the stove will not cause combustion, never as other stoves often lead to fire incidents, not to mention the existence of gas leakage caused by a variety of things.
When the lines of magnetic force in the magnetic field pass through a non-metallic object, there is no eddy current, so no heat is generated. The surface of the stove and the person are non-metallic objects, itself will not heat, so there is no danger of being burned by the induction cooker, not to mention not afraid of the wind, will not explode or lead to gas poisoning.
When the pots and pans are taken off the stove top, the induction cooktop will also automatically cut off the power supply, so it can be said that the induction cooktop is a very safe cooktop.
General microwave ovens work at a frequency of several gigahertz, which is harmful to human health; while the frequency of oscillation of the induction cooker is only 20 to 30 kilohertz, which does not cause any harm to the human body.
The induction cooker is equipped with a number of safety protection appliances, as well as indicator LED display and automatic devices, so that the user at a glance, accurate selection of different ways of working.
3, more environmentally friendly (health, cleanliness)
Bid farewell to the smoke and fire filled kitchen battlefield, is the modern housewife's big wish, some of the city's white-collar class began to advocate the convenience, speed, smoke-free, odorless green kitchen concept. Induction cooker is known as a green stove with the avant-garde flavor of the times. Because of the use of magnetic field induction heating in the iron substance, does not release any substances, no fire, no smoke, no smell, but also does not raise the room temperature; and the traditional coal, liquefied petroleum gas, gas combustion, due to the combustion of air, so that the room temperature continues to rise, the kitchen fumes continue to increase, and at the same time, will release carbon monoxide, carbon dioxide, sulfur dioxide and other harmful substances affecting human health. The use of environmentally friendly induction cooker does not have the traditional stove many pollution problems, so the real realization of a clean room, protect the environment. It works without fire baking, especially in the summer cooking, refreshing and comfortable.
4, more accurate (temperature control accuracy)
Induction cooker can be based on the user's different cooking requirements, flexible and accurate control of heating power and cooking temperature. The input power of induction cooker is usually between 200W-2400W, and you can choose the temperature required for cooking (thermostat system) and set the temperature to a certain gear. The reason why chefs can cook delicious food is that they can master the fire. Induction cooker adopts advanced scientific methods to develop a series of thermostatic devices from 0 degrees to 240 degrees, so you can choose the desired temperature when cooking, very convenient, and can make the cooked food to achieve the ideal color and flavor. So that the pursuit of exquisite life you can provide a delicious meal for your family and yourself.
5, more (frying, stir-frying, deep-frying, cooking, stewing all-round line)
Induction cooker is undoubtedly frying, stir-frying, deep-frying, cooking, stewing all-round champion, which is undoubtedly compared with the single function of the microwave oven has a huge progress, but also maximize the saving of space in the kitchen, carry light and convenient, and there is no danger of radiation and leakage of electricity.
Compared with the traditional charcoal, it is beautiful, hygienic, fast, safe and convenient, which makes it the best cooker for shabu-shabu. In addition to being used for shabu-shabu, it can be used for steaming, boiling, pan-frying, roasting, deep-frying, shabu-shabu, timing, reservation, and heat preservation, which makes it multi-purpose and equivalent to 8 kinds of small home appliances (i.e., electric kettle, electric pressure cooker, electric grill pan, electric stewpot, electric pancake pan, electric fondue pot, electric rice cooker).
The fire of induction cooker is controlled by microcomputer, which is very convenient and accurate to use. In frying, stir-frying, barbecue can also be directly pressed frying, stir-frying, barbecue button in order to automatically configure the appropriate temperature. According to the current induction cooker production and sales growth rate, catching up with the microwave oven only takes about 5 years.
6, more convenient (simple operation, beautiful shape)
Easy to operate: some common household stoves (such as: microwave ovens) have a number of operating buttons, the induction cooker only a few buttons can complete the operation.
Portable: because of the small size, dexterity, hygiene, so easy to move, easy to carry and no air change and a series of tedious things such as the pain. Such as to the hospital to take care of the patient, or traveling, etc. can be carried. As long as there is electricity where you can use the induction cooker, connected to the plug that is plug and play, very convenient, it can also adapt to a variety of places: especially the fire places, open windy places (such as underground, gas stations, liquefied petroleum gas centers, sprinkle plant, workshop, warehouse, etc.) because it is not generated during the work of open flames, and no high temperature, no exhaust gas.
Beautiful appearance of the induction cooker, the volume of small and exquisite, colorful body surface, can beautify the kitchen. The material used to make it is high hardness ceramic crystalline glass, and deliberately use the planarized streamlined design, so the surface of the induction cooker is not easy to leave food residues, stains, even if there is a stain cleaning up is very convenient. Let the pursuit of taste of life people living more artistic electromagnetic radiation hazards and prevention
Electromagnetic radiation and health
The twentieth century is known as the electrical era, power stations, transmission lines more and more, a variety of electrical appliances into the factories, laboratories, offices, and ordinary residents of the home. However, whether electromagnetic fields, especially those at industrial frequencies (50-60 HZ), have an effect on human health has always been a matter of concern.
In the early 1960s, experts began to discuss this issue. At first, the experts' attention was focused on the role of electric fields and ignored the role of magnetic fields. Because people at that time mistakenly thought that the magnetic component of this electromagnetic field is very small, it is impossible to produce a perceptible effect on human health. The relevant health care standards of many countries only stipulate the standard of the permissible electric field component in the electromagnetic field of industrial frequency; in the manufacture of all kinds of electrical equipment and appliances as well as the erection of transmission lines, only the standard of the electric field component is taken into consideration, but not the permissible maximum limit of the magnetic field component. However, a large number of investigations and statistical analyses later showed that magnetic fields can also affect human health. For example, the probability of the occurrence of a variety of tumors in the human body is closely related to the exposure to low-frequency electromagnetic radiation. Experts and some governmental institutions in many European and American countries are convinced that low-frequency magnetic fields significantly increase the incidence of the following diseases: leukocytosis and leukemia (especially harmful to children), cancer, neonatal physical defects, breast cancer, brain tumors, malignant lymphomas, neurological tumors, the development of astrocytes, chronic myelocyte-like leukemia, chromosomal aberrations and so on. Some reports also indicate that a decrease in the secretion of some hormones under the action of electromagnetic fields may also be responsible for the development of breast tumors.
About the harm of cell phones on the body, so far there is no most direct evidence, but in general with cell phones or to make a long story short.
Electromagnetic radiation know how much
Some survey reports point out that: frequent exposure to electromagnetic radiation, if the role of high temperatures, the risk of breast cancer in their bodies is greater; long-term electrical engineers, and then often in contact with gasoline, pesticides or insecticides, they suffer from acute leukemia, the risk of an increase.
Many surveys also report that people in "electrical occupations", children, and people who use household appliances inappropriately (children who play video games, women and children who use electric blankets and other electric heaters, etc.) are at greater risk of damage from low-frequency magnetic fields. In some countries, pregnant women are also subject to the rule that babies should not be exposed to microcomputers for 3 to 6 months before they are born.
The intensity and cumulative amount of low-frequency magnetic field radiation affects the probability of disease. And, some people develop the disease after a latency period of up to 10-15 years. The upper limit of permissible magnetic induction is 100 microtesla, as specified in international health standards. Electromagnetic radiation is like the relationship between the sun and ultraviolet rays, you have to enjoy the sunshine will inevitably receive ultraviolet radiation. Electromagnetic radiation is invisible, intangible and difficult to perceive, so its harm is particularly insidious. From electronic alarm clocks, hair dryers, microwave ovens, electric irons, to computers, fax machines, telephones, we are not in contact with electromagnetic "comfort" all the time. Outside the door, the power lines, a variety of electrical equipment and make us very easy to be in the electromagnetic field. 21st century electromagnetic environment deterioration has become a foregone conclusion.
How to prevent the harm produced by electromagnetic radiation
1. Prevent the effects of electromagnetic radiation on the human body:
(1) shielded room: composed of metal (sheet, net), mostly used for large-scale mechanical groups or control room of the active field shielding;
(2) shielding clothing shielding helmet and shielding glasses: these are personal protective gear, can effectively reduce the intensity of magnetic radiation, to protect those engaged in contact with electromagnetic radiation. Radiation intensity to protect the physical health of staff engaged in contact with electromagnetic radiation;
(3) shielding cover: this is the main method of active field shielding of small instruments, shielding the materials used are generally required to be conductive materials with low resistivity, such as copper, aluminum, etc.;
(4) for the electromagnetic radiation generated by the cell phone can be wearing headphones to reduce electromagnetic radiation, the Ministry of Information Industry The Ministry of Information Industry, Telecommunications Transmission Research Institute Thiel Laboratory experiments proved that the use of headphones to talk to the head by the amount of radiation in the direct use of cell phones to talk to the amount of radiation between 1/100 and 1/200.
2. Prevent electromagnetic radiation leakage of your computer confidentiality methods:
(1) passive mode: electromagnetic shielding, to prevent the leakage of electromagnetic waves to the outside. The disadvantage of using this mode alone is that if the shielding can not be complete, the high sensitivity of the electromagnetic receiving equipment can still access the information;
(2) active mode: the electromagnetic wave emission, so that the electromagnetic receiving equipment used for stealing the secrets of the signal received by the interference. The disadvantage of using this mode alone is that it is still possible and useful information can be restored if the received jammed signals are analyzed by well-designed software.
The best approach, therefore, is to use a mixture of both modes at the same time.
Thus, the passive mode to prevent electromagnetic wave leakage to the outside, we have to start from these aspects. Shielding the monitor alone is not enough. All unnecessary cables and peripherals should be removed when the computer is to be used in a confidential situation.
Correct understanding of electromagnetic radiation
With the development and progress of society, a large number of television towers, broadcasting stations, radar, satellite communications, microwave and other equipment and activities with electromagnetic radiation is also increasing. These devices play an important role in the improvement of human living standards and the progress of social development, while generating electromagnetic waves is also an element of environmental pollution. The more social development progresses, the more serious the situation of electromagnetic pollution of the environment. Therefore, electromagnetic wave is both a carrier of information and energy flow that is beneficial to social development and a pollution element that is harmful to human life, and its harm has been highly valued by the international environmental protection field. Therefore, both electromagnetic energy as a resource, fully utilized; but also to strengthen the management of the negative effects of electromagnetic radiation will be controlled to a minimum.
According to the relevant experts of the State Environmental Protection Administration, from a professional point of view, electromagnetic radiation generally refers to electromagnetic waves with a frequency of more than 100KHZ. The sources of electromagnetic fields are natural and artificial. First of all, the earth itself is a large magnetic field, sunlight itself is also a band of electromagnetic waves, as well as lightning and other electromagnetic waves generated by the planet, are naturally occurring, and mankind is evolved in this environment, and nature to form a harmonious ****existence relationship, so the natural electromagnetic radiation, there is no harm to the human body. However, since the 19th century, with the development of science, mankind invented a lot of facilities that work with electromagnetic energy, and a large number of these facilities emit electromagnetic radiation or generate electromagnetic fields into the environment, so that the problem of electromagnetic radiation in the environment is becoming more and more serious, thus giving rise to the problem of electromagnetic environmental protection. Facilities that generate electromagnetic radiation can be roughly divided into five categories:
1, radio and television transmission systems, such as television transmission towers, radio relay stations;
2, wireless communication transmission systems, such as cell phone base stations;
3, high-voltage power transmission and transformation systems, such as high-voltage lines, substations;
4, electrification of railways, such as magnetic levitation trains;
5, Industrial, scientific, medical use of electromagnetic energy facilities, such as high-frequency smelting furnace;
Harm of electromagnetic radiation
Human beings themselves live in a huge electromagnetic field, electromagnetic radiation is ubiquitous, so electromagnetic radiation is not as terrible as imagined. Electromagnetic radiation only exceeds a certain value will have an adverse effect on the human body. According to the Electromagnetic Radiation Protection Regulations issued by the National Environmental Protection Agency, the electric field strength should be safe if it is less than 40 volts per meter. Even if it exceeds this value, it does not necessarily produce harm, depending on the individual's resistance and the time and distance of exposure. In addition, experts also pointed out that electromagnetic waves are ubiquitous, it brings infinite convenience to our lives, we should be treated correctly, rational use, there is no need to worry too much, as long as the appropriate shielding protection, you can greatly reduce the impact of radiation.
How terrible is electromagnetic radiation
In recent years, domestic and foreign media reports on the harmful effects of electromagnetic radiation has been unbroken: more than 400 children in Italy each year leukemia, experts believe that the cause of the disease is subjected to serious electromagnetic pollution; the United States, a cancer medical foundation for some patients who have been damaged by electromagnetic radiation sampling, the results show that people working near high-voltage lines, their cancer cells Growth rate than the average person 24 times faster; China's annual birth of 20 million children, there are 350,000 for the defective children, of which 250,000 for intellectual disability, some experts believe that electromagnetic radiation is one of the factors affecting.
Is the harm of electromagnetic radiation really so sensational?
In fact, human beings have been living in an electromagnetic environment. The earth itself is a large magnetic field, its surface thermal radiation and lightning can produce electromagnetic radiation. In addition, the sun and other planets also produce a constant stream of electromagnetic radiation from outer space. But the natural electromagnetic radiation is not harmful to the human body, the human body poses a threat to the environment caused by pollution is artificial electromagnetic radiation.
Household appliances, electronic equipment, mobile communication equipment and other electrical devices, as long as the operation of the use of state, it will be around the existence of electromagnetic radiation. Also heard that electromagnetic radiation can penetrate a variety of substances including the human body. Some people will therefore product electromagnetic radiation pollution compared to the "invisible killer".