Fume hood with alarm system

摘要

A fume hood includes a top, bottom sidewalls, front panel and a back panel that define an enclosed workspace. The fume hood also includes a movable sash for opening and closing an access opening. The fume hood may also include an air chamber having an inlet in the front panel. The air chamber includes a baffle system that evenly distributes the inlet air as the air travels through the air chamber. An unimpeded flow of air is discharged downward and away from the breathing zone of the technician and proximate to the sash to reduce the forward momentum of air trying to escape the fume hood. In an alternate embodiment, the fume hood also includes an alarm system to provide a visual and/or audible indication to the user of a working condition of the fume hood. The characteristics of the visual indication and the audible indication may vary depending on the position of the movable sash and the measured airflow from the discharge of the air chamber.