Author: yuki

29 Sep

Posted at 07:13h in blog by
2 Likes

Abstract: Noise is always the problem of the induction cooker that haunts people. This paper introduces the solution of reducing the noise of the induction cooker by improving the duct structure with innovatively-designed air duct, fan and air intake grill and heat radiator systems. It will greatly solve the noise problem caused by the induction cooker’s fan and reduce the noise to 32dB (A). Key words: Induction Cooker; Induction Heating; Air Duct; Heat Radiation; Noise The induction cooker that is sold on the market at present has a noise of 45dB(A) when using or so, which is equivalent to the ordinary indoor conversation....

29 Sep

Posted at 03:30h in blog by
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Let's first look at how induction cookers work . When a lump of metal is placed in a time-varying magnetic field, the electrons in the metal are induced by the force of the induced electric field to produce an induced current, which is called an eddy current or eddy current. As shown in Figure 1, when a variable current is passed through the coil, a variable magnetic field is generated around the coil, and the metal is equated to an infinite number of closed loops, and the changing magnetic field generates eddy currents in the loops. Figure 1 Eddy currents emit Joule heat...

27 Aug

Posted at 07:41h in blog by
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Induction cooker technology development history Reviewing the history of the development of induction cooker technology in China. We can find that the development of induction cooker technology has gone through Several stages. 一.  Digital circuit and Darlington tube period(1985-1990). It is characterized by multiple Darlingtontubes are used in parallel and controlled by digital circuits.   二. The period of general-purpose microcontroller and IGBT (1998-2006). 2006). It is characterized by a single IGBT, general-purpose microcontroller control (PWM technology).   Of course, in this process, some other technologies technology has also been developed, such as: fan (AC) current motor to brush DC motor to brushless DC motor; power supply technology (from transformer power to...

27 Aug

Posted at 03:08h in blog by
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Abstract Based on the practical application, the article uses a series resonance method for the circuit topology of the commercial induction cooker, analyzes its different working status, and obtained the optimal switching process of the inverter power devices, theoretically calculated the relation between frequency and phase angle. The power regulation is achieved by a combination of “pulse width modulation (PWM) mode” and “phase-locked loop control”. Based on this, a series resonant inverter test prototype is built and verified the conclusion by experiments. It has a strong application background to solve practical problems. Keywords：inverter; induction heating; series resonant; phase-locked control; commercial induction cooker   Commercial...

20 Aug

Posted at 03:16h in blog by
1 Like

Appliance Research of IGBT in Induction Cookers   Abstract: This article first introduces the application of IGBT in induction cookers, analyzes the various control circuits of induction cookers, and according to the most common application method of IGBT in induction cooker, analyze the possible failure of IGBT. According to the most common application method of IGBT in induction cooker, this article analyzes the possible failure of IGBT, proposes the matters that should be paid attention to during the application of IGBT in induction cooker, and improves the reliability of IGBT. In order to achieve the purpose of improving the safety and reliability of induction cooker. Introduction:   The induction...

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