| 摘要 |
<p>A method of producing small bubbles (90) of gas in a liquid comprises a s ource (16) of the gas under pressure, a conduit (64a) opening into a liquid and oscillating the gas passing along the conduit at a frequency between 1 a nd 100 Hz. The oscillation is effected by fluidic oscillator (10) comprising a diverter that divides the supply into respect outputs (A, B), each output being controlled by a control port, wherein the control ports are interconn ected by a closed loop (22). There may be at least two of said conduits (62a , 64a), each output port being connected to one or the other of said conduit s, in which one phase of the oscillating gas is employed to drive liquid acr oss the conduit (64a) after formation of a bubble in the other phase of osci llation, whereby the bubble is detached by the force of said driven liquid.< /SDOAB></p> |
