| 摘要 |
<p>A contactless air film pick-up device utilizes the Bernoulli pressure-velocity relationship to provide a pick-up action, and, at the same time, generates a lateral restraining force centering the picked-up object. An air outlet opening (22) in the center of a flow boundary surface is surrounded by intake means (25) ahd, in a radially wider distance, by outlet means (27, 29). The lifting force is provided by air flow through the outlet opening (22), the centering force is generated by air flowfrom the outlet means (27,29) to the intake means (25).</p> |
