| 摘要 |
<p>A fluid tornado is generated by providing means (2, 3, 24, 29, 37) for inducing a region of rotary fluid flow, and means (5, 25, 30, 38) arranged to extract fluid from a central portion of said region simultaneously with the induction of said rotary fluid flow to create a low pressure central portion of said region, so as to generate a tornado (A) directed toward said extraction means. The apparatus has many uses including the collection and discharge of detrimental gases and dusts, fluid agitation, space heating and cooling, torque transmission, and the conveying of slips or powders.</p> |
