Fume cupboard for chemical laboratory uses additional air directed across its inner surfaces for preventing escape of fumes

摘要

The fume cupboard has a housing enclosing working chamber (3) which is open on one side, with air jets (21,22) directing additonal air onto the inner surfaces of the housing base (3) and lateral sides, the air jets following the contour of the inner surfaces. The side posts (8) and the front edge (11) of the working chamber can be provided as flow profiles incorporating air jet devices