Improvement and Noise reduction for the Active Air Inlet Quick Burner by Using Dispersive Combustion Method

摘要

An active air inlet quick burner is widely used in Asia for cooking due to it provides extremely large thermal power of ca. 5500 W, but its yellow flame shows incomplete combustion and a huge noise of ca. 100 dB is also generated. This article presents experimental data for combustion improvement and noise reduction using dispersive combustion method. For dispersing the single combustion, a porous flame plate was developed and covered on the burner, which forced mixture of the fuel gas and air to be dispersed through holes of the porous flame plate and yielded numer- ous fasciolar combustion. Adding the porous flame plate has built a mixing room, which provides the better mixing process. Moreover, the smaller combustion also yields the smaller combustion knock. Diameter and depth of the holes on the porous flame plate are used as the main influencing parameters, where the diameters are 2, 3, 3.4, 4 mm and the depths are 4.5, 10, 15, 20 mm. The results show that applying the porous flame plate has maximum doubly increased the thermal power and the noise is reduced to ca. 70 dB under the same thermal power condition.