| 摘要 |
<p>Disclosed is a local exhaust device provided with a swirler and a guide member. The disclosed local exhaust device comprises: a driving portion; a swirler, which is arranged near an aspiration end of an exhaust pipe, for generating a vortex that forms an air curtain around an exhaust flow rising toward the exhaust pipe, by rotating while connected to the driving portion; and an outer guide member, which is arranged so as to surround the outer circumference of the swirler, for expanding the air curtain in the vertical direction by guiding the vortex generated by the swirler downward. The swirler comprises a base member, which is connected to the driving portion and is provided, at the center area thereof, with an air aspiration hole communicating with the exhaust pipe, and comprises a plurality of blades installed on the base member for generating an airflow that forms a vortex.</p> |
