A few years ago, many consumers do not know what is induction cooker.and now it has been the public's attention the family has become one of the strong sales of kitchen appliances market. Speaking on the cooker understanding, the user first feeling is that you can plug in electric wok cooking, easy to use.
In fact, as a kind of kitchen appliances, heating cooker is completely different from the traditional principles of fire or no fire conduction heating kitchenware. Therefore, there is no heat to the surrounding radiation, it does not produce CO and other harmful gases, is very suitable for "clean kitchen" concept when cooking.
For more attention cooker radiation, industry experts have been somewhat controversial. Seen in this light, a small cooker, really hide a lot of "secret", we are very necessary to be fully understood.
Induction heating principle of Cooker alternating magnetic field components of the electronic circuit board, when the iron is placed at the bottom of the pot to the oven surface, pots and pans that cutting the alternating magnetic field lines at the bottom of the pot with a metal part of the alternating current (ie, vortex), vortex pots and pans to make high-speed random motion iron molecules, molecules collide with each other, friction generated heat, so that their own high-speed pan specific heat, heat, so as to achieve the purpose of cooking food.
Visible, cooker cooking food heat actually comes from the bottom of the pot cooker itself rather than heat transfer to the pot. Appliance products currently on the market mainstream, it marked a significant 2000W~2300W power range. According to the principle of conservation of energy, under ideal conditions, the appliance consumes much energy, we can achieve the same heating power, ie how much heat can be generated in metal pots and pans, so the thermal efficiency than the average efficiency of all cookware was nearly doubled.
The main structure cooker
There are two major parts Cooker: electronic circuit part and the structural part of the packaging.
Electronic circuit section includes power panels, motherboards, light panels, and thermal coil plate bracket, fan motors.
Structural part of the packaging, including panels, plastic upper and lower lid, fan blades, fan bracket, power cable, manual, power stickers, operating film, certificate, plastic bags, shockproof foam, box, bar code, cartoon boxes.
In the two major components of the appliance, the core component is IGBT and panels
IGBT is similar to the computer's CPU, is the core of the device cooker. Currently IGBT core technology in the hands of a few companies, brands products include Infineon, Siemens, Fairchild, Toshiba, Fujitsu, Mitsubishi and so on.
Induction of the panel is similar to the TV screen, the market has a good selection of imported ceramic cooker panel (sub black and white), this special panel production process, the surface is smooth, good gloss, not afraid of scratching.
The primary standard quality cooker panel is permeability. Induction heating due to the principle of special, so they requested that the panel must have good permeability, or can not properly heat.
The second is to have good insulation, because at work, pots and pans are heated above the panel temperature is high, the bottom panel is inside the coil cooker, circuit boards and other components, if the insulation performance is not good, pots and pans heat to the inside of the machine, causing a short circuit, fire and other issues.
In addition, the appliance panel also must have superior pressure and temperature resistance, not because of pots and pans pressure and temperature changes and deformation, and even melted.
The pros and cons of a large panel cooker for quality impact. Currently on the market there are three kinds of cooker panel: Domestic panel, Japanese panel, German Short board. Craft panel is the highest German Schott, its high heat resistance, strength, long-term use is not yellow, not color. Followed by Japan's NEG. If the appliance manufacturers use a good quality imported panels, usually marked with the manufacturer's logo on the panel, somewhat similar to computer brand logo marked intel. When consumers buy cooker wish to observe it, to check whether the manufacturer's logo on the cooker panel.
Advantages and disadvantages of the cooker
As a kind of kitchen appliances, cooker is also a technology products, although the price is not high, but you can say as much as any of the technical content of home appliances, and more with gas stove, microwave unmatched advantage, of course, has its inherently inadequate.
Technical advantages
No burning cooker inadequate sanitation problems, no adverse gas during the heating process, so there is no smoke roasted phenomenon, nor is there any fuel stains and air pollution, easy to keep pots and pans, stove clean. The gas stove in the heating, if incomplete combustion will produce CO and nitrogen oxides on human health and the natural environment damage. At the same time with not much time, gas stove, cooking utensils, will produce a dark layer, easy to clean. Microwave has such drawbacks, long time, bore very troublesome to clean up, but the appliance does not have these problems.
Energy efficient energy efficient is a big advantage cooker. 2000 watt cooker in less than three minutes to boil one kg of water; the average family with a 2000-watt electric stove to cook for an hour before use 2 kWh.
"Household cookers limited value of energy efficiency and energy efficiency rating" Standard China from March 1, 2009 to enforce the provisions of the energy efficiency rating is divided into five. Thermal efficiency values were 1 ~ 5-level product of not less than 90%, 88%, 86%, 84% and 82%, of which one is the highest energy efficiency standards; 1,2-level products, standby power is not more than 2W, 3 4,5-class products standby power less than 5W. This new standard for consumers to buy the appliance provides a good reference, just pay attention to see marked on the appliance, you can understand the energy efficiency rating when consumers buy.
Security worry cooker design focus on safety performance. First panel cooker does not heat, no burns fear. Secondly, through the control board, the appliance can automatically power, firepower switching functions, and features multiple safety precautions, including the furnace tilt power, overtime power, to burn alarm, over current, over voltage, under voltage protection, improper use of automatic shut-down.
Use, even if sometimes the soup spills, hazardous gas stove flame ran not exist. Users can also take advantage of intelligent control functions cooker, timing boil, braise, boil, during which the user who can walk away to do other things. The gas stove is easy to leak, and the lack of necessary safety facilities, in use must keep in the kitchen, to prevent gas leak produce fire and other accidents.
Inherently inadequate
The decision can only be made with metal pots and pans cooker works, induction heating only metal pots and pans, because only metal elements and electromagnetic fields can occur this role, and utensils ceramics, glass and other materials with the properties of the metal molecules are not not only can not be heated, but also may bring some risk.
Only with the use of electromagnetic induction cooker pan magnetic eddy current heating food, only the bottom of the cooker pot with plain surface contact, in order to obtain maximum performance. If the bottom of the pot is extremely irregular, when exposed to a magnetic field will cause a portion of the electromagnetic wave back to the coil, the resulting loss of control circuitry. There are a lot of manufacturers have introduced a "concave" cooker, although this product is no problem for security, but due to special reasons will lose some efficiency.
Radiation cooker
Electromagnetic induction cooker produce magnetic eddy heat food in their work process will produce low-frequency electric and magnetic fields, within a certain range would constitute electromagnetic pollution. On this issue, on the Internet and some media-related talk a lot. Then, the electromagnetic radiation of home appliance how much will it affect human health?
Radiation certainly has all the appliances have radiation, and power belong cooker, kitchen appliances and strong magnetic fields, radiation is unavoidable. For detection proved that the magnetic field generated by the work of the cooker is not 100% pans absorb part of the field will leak out from the pots and pans around the formation of electromagnetic radiation, but the edge of the radiation is weak. According to the tests showed that when pots and pans on the cooker "work", the closed magnetic field strength generated by Induction Cooker highest intensity in the edge of 160 gigahertz, while using a cell phone signal is generated when the magnetic field close to 1600 gigahertz, is Induction furnace surface edge 10 times the magnetic field.
Detection follow CISPR11 standards. Currently no information on the standard cooker radiation detection follow international EMC standards CISPR11. Meet this standard products, electromagnetic radiation are within the safe range, but these two standards have yet to be perfected.
Different orientations depending on the direction of the electromagnetic radiation, we can see that the position that is perpendicular to the waves of electromagnetic radiation at the top of the pot with a large, parallel to the electromagnetic standing position that the human body is slightly smaller electromagnetic radiation. According to experts, the current domestic cooker manufacturers to control the level of electromagnetic radiation has basically meet EU standards, electromagnetic radiation is only one tenth cooker edge of the phone, well within the safe range. But considering there are still large differences between the various brands, as well as the direction of the electromagnetic wave and potential hazards in the use of the appliance, be careful not to long hand on top of the pot. If you are boiling water, soup, as far as possible away from the cooker; if you are cooking, you should get a standing position control a little far; also try not to eat hot pot head close to the pots and pans. In addition, infants, pregnant women, these special populations, or away from the cooker as well.
Induction cookware is very important radiation size, and they use pots and pans are made of a very important relationship, because the pot is used to absorb the magnetic field generated by the appliance, if the pot with a small magnetoresistive material, then the magnetic field of the absorption ability is strong, very little external leakage; if the presence of irregularly shaped pans, impurities and other issues, the external magnetic field radiation leak much greater. Therefore, experts recommend that consumers the best selection of regular shape, material purity stainless steel cookware cooker. So when consumers choose matching cooker cookware, cookware requires strict scrutiny brand, shape and uniformity, Mo cheap low quality cookware.
Pearl
Emily