| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an exhaust apparatus, which facilitates operation of a lifting door and further prompts flow of air into a working chamber even though turbulence of air current occurs in the vicinity of a lower end part of the lifting door so as to prevent the air in the working chamber from leaking out to the outside.SOLUTION: An exhaust apparatus 1 has a working chamber 8 on a front face of which a lifting door 6 whose lower part can be opened by being pulled upward is provided and exhausts air in the working chamber 8, where at a lower end part of the lifting door 6 are provided an extending piece 12b extending below the lifting door 6 and a protruding piece 13b protruding nearly horizontally from an upper part of the extending piece 12b to a front face 6a of the lifting door 6 by a predetermined length. The length of the extending piece 12b is equal to a predetermined length of the protruding piece 13b or more and equal to twice the predetermined length of the protruding piece 13b or less.</p> |
