Development of Electric Power-Saving Type Kerosene Burner with Using Strong Thermal Network

在家用锅炉上使用的燃烧器具有经济性好的优点。然而，它是不容易的燃烧的煤油燃料作为气体燃料。因此，强制加热或喷射煤油，以便汽化并与空气混合。加热式燃烧器与其它燃烧器上级，具有点火瞬间、调节比宽、调节容易控制等优点，加热式燃烧器在加热过程中消耗大量的电能，功率在300 ~ 1000 W之间，本研究的目的是利用强热网络来降低燃烧过程中用于汽化煤油的电能在燃烧器中。也就是说，陶瓷板具有非常大的孔，以使来自上游火焰的热辐射回流，从而使燃料蒸发。研制了一种陶瓷板燃烧器，并对这种新型燃烧器的特性进行了实验研究，结果表明：（1）在燃烧过程中，可以消除加热和汽化煤油的电功率; (2)横截面的温差变得非常小，范围在30度K以内。(3)从多孔板后的火焰到燃料的热回流的比率似乎是总燃烧热的2%。(4)超声雾化点火技术有望缩短点火时间。

Kerosene burner for home use boiler has the merit in economic cost. However, it is no easy to burn the Kerosene fuel as gaseous fuel. Therefore, Kerosene fuel is forced to heated or sprayed in order to vaporize and be mixed with the air. The heating type burner is superior to the other type burner, in the instant ignition, wide turn-down ratio, easy control of turn-down, and so on. On the other hand, the heating type burner consumes a lot of electric power during heating process ransing from 300 to 1000W.The objective of this research is to reduce the electric power for vaporing the Kerosene fuel during combustion by using strong thermal network in the burner. That is, a ceramic plate with very large pores to reflux the thermal radiation from flame upstream in order to vaporize the fuel. A burner with the ceramic plate was constructed, and the characteristics of the new-type burner were experimentally investigated.It is demonstrated as follows :(1) It has become possible to eliminate the electric power to heat and vaporize the Kerosene fuel during combustion.(2) The temperature difference across section become very small ranging within 30 degree K.(3) The ratio of reflux of heat from the flame after porous plate to the fuel seems to be 2 % of the total combustion heat.(4) The technique of ignition by using ultrasonic atomizer is promised to make ignition time short.