| 摘要 |
<p>A clean air apparatus 2, 4 comprises clean air means for producing a flow of clean air and for discharging the clean air from an outlet and towards a target clean area 12. The apparatus comprises a Coanda effect device 24, 26 disposed at least adjacent the clean air means, which is arranged, in use, to induce a Coanda effect upon the flow of clean air. The apparatus comprises guide means 28 for guiding the clean air towards a target clean area in the form of an air curtain. The Coanda effect may be passive 2 (no fan) or active 4 (fan 16). The clean area may be an operating table 10 in an operating theatre or in a pharmaceutical or semiconductor manufacturing plant. The apparatus may be attached to a ceiling 8.</p> |
