| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a draft apparatus which can afford space-saving and efficiently discharge a dust-containing gas. <P>SOLUTION: There is provided a draft apparatus in which a work table is provided within a work chamber surrounded with wall surfaces at its ceiling, its right and left, and its front, and a gas is introduced by suction from the front openings and is discharged from the front wall surface, which apparatus is characterized in that a plurality of rows of triangular-cross-section flow regulation plates 12 which face their vertices on the front opening 5 side and extend from the ceiling wall 2e to the work table 3 are laterally and spacedly juxtaposed between one side wall 2c and the other side wall 2d on front of a compartment 15 provided on the side of the back wall 2b of the draft apparatus 1 to thereby eliminate the reverse flow of the dust-containing gas into the work chamber 4 to allow smooth gas discharge therefrom. <P>COPYRIGHT: (C)2013,JPO&INPIT |
