| 摘要 |
A fluid mixing device suitable for oil burner use comprises an outer cylindrical tubular member and an inner cylindrical tubular member provided with a flared bell at one end thereof. The outer peripheral lip of the bell has a diameter thereacross which is at least half the inner diameter of the outer tubular member, for defining a narrow annular venturi orifice of substantially constant radial dimension. Air flowing in the outer tubular member increases in velocity and decreases in pressure at the orifice for drawing oil from the inner tubular member in order to produce a finely mixed fog beyond the flared bell.
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