小形噴霧燃焼器の研究 : 第1報,微少燃料流量用噴霧ノズルの検討

概要

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For the development of a new combustion-type heater, it is necessary to develop a basic technique for atomizing a liquid fuel in a small flow rate from 0.01g/s to 0.1g/s. In this paper, the spray characteristics of three different types of atomizers are investigated in terms of spray angle and droplet size. Main results are as follows: (1) The ultrasonic-type atomizer has a spray with low velocity, and its spray is not stable by nature. (2) The steam-jet-type atomizer can hold a flame easily. But its spray at a small flow rate localizes to one side. (3) The plain-jet-airblast-type atomizer (with swirling blast air or nonswirling blast air) is suitable for a small-scale spray combustor. In the case of swirling blast air, the spray angle is wider and the mean droplet size is larger, as compared with in the case of the nonswirling blast air.
社団法人日本機械学会の論文
1989-09-25