Induction stove principle -- 1, Overview
Induction cooker is the application of electromagnetic induction principle of heating work, is a modern family cooking food advanced electronic cookware. It is very convenient to use, and can be used for boiling, frying, pan-frying, steaming, stir-frying and other various cooking operations. Characteristics: high efficiency, small size, light weight, low noise, energy saving, no pollution of the environment, safety and hygiene, cooking, heating uniformity, can better maintain the color, aroma, taste and nutrients of food, is the realization of the modernization of the kitchen is indispensable to the realization of the new type of electronic cookware. The power of induction cooker is generally about 700-1800W.
Induction cooker according to the frequency of the current in the induction coil is divided into two categories of low-frequency and high-frequency, compared with the high-frequency induction cooker heating efficiency is high, more energy-saving.
Categorized by style, can be divided into the following three.
Tabletop induction cooker: divided into single-head and double-head two kinds, with easy to place, strong mobility and other advantages. Because of the low price is more popular.
Buried induction cooker: the entire induction cooker into the cabinet surface, and then dug a hole in the countertop, so that the cooker surface and the cabinet countertop into a plane. Industry experts believe that this installation method only seeks aesthetic, but not scientific, a large part of the consumer group as a hot pot induction cooker, buried frying is not convenient.
Embedded induction cooker: can be adapted to the needs of different pots and pans, no longer have special requirements for pots and pans.
SPMC65P2404 chip to realize the design of the induction cooker. SPMC65P2404 is a Sunplus launched an industrial control 8-bit microcontroller, has a high cost-effective, strong anti-interference ability, is very suitable for application in industrial control class, home appliance product design. The induction cooker designed with SPMC65P2404 has the following performance:
The quality of the induction cooker depends on the quality of the high-frequency and high-power transistors and ceramic microcrystalline glass panels. Induction furnace is through the current voltage through the rectifier converted to DC, there are by the high-frequency voltage conversion device to make DC into more than audio high-frequency alternating current, will be added to the alternating current in the induction heating to produce heating current.
The difference between the working principle of the induction cooker is that the induction cooker uses the principle of electromagnetic field, by generating the phenomenon of eddy currents on the iron pot to generate heat. Induction cooker is an intermittent heating method, in the heating can not be sustained, for the temperature of the controllability is not strong, does not have some high temperature stir-fry effect. Induction cooktops have several basic functions such as stir-frying, boiling water, hot pot, frying, and martial arts fire.
Principle of induction cooker - 2, induction cooker design requirements
Induction cooker as a common household products, in addition to the basic heating function, its safety performance and stability is the key to the design.
Induction cooker with a variety of protection devices, including small object detection, overheating automatic shutdown protection, over-voltage or under-voltage automatic shutdown protection, automatic stop heating protection of the empty burner, 2 hours of power outage protection, 1 to 2 minutes of automatic shutdown protection, as well as sound and light alarm display.
Comprehensively, the induction cooker can be assessed by the following technical characteristics of parameters:
(1) its own protection characteristics. Output switching tube is the key component of the induction cooker, working at high voltage, high power state, limited by the cost and device parameters, design is not likely to have a large margin, so in the process of work, if the power supply voltage is too high, the work state switching momentary impact, the current increases, the temperature inside the machine is too high, the iron pots and pans moved away from the stove plate or no load, the switching tube may be damaged. Therefore, should ensure that the over-voltage, over-current, over-temperature, pot detection and other protection devices are normal;
(2) the bottom of the pot temperature control characteristics. The bottom of the pot heat directly to the stove plate (ceramic glass), stove plate is a heat-conducting material, so generally will be installed in the bottom of the stove plate thermal element, detecting the temperature of the bottom of the pot;
(3) power stability. Induction cooker should have the output power automatic adjustment function, in order to improve the power supply adaptability and load adaptability;
(4) electromagnetic compatibility. This performance involves the interference with the rest of the home appliances and the harm to the human body. Induction cooker are in the power supply circuit with LC filter circuit and metal frame to absorb the leakage flux, while using the pulse method, so that the average radiated power control at a minimum;
I believe that through today's introduction to the principle of induction cooker we understand a lot, I hope it can help the future of the purchase and use. The above is the principle of induction cooker for everyone to the end here.