| 摘要 |
<p>The present invention relates to an industrial arm type ventilation device and, more specifically, relates to an industrial arm type ventilation device having n number of duct members and (n-1) number of joint parts to connect the n number of duct members to be turned. The joint parts comprise: (n-1) number of flexible pipes to connect the n number of duct members to be communicated to each other; and (n-1) number of turning support parts. Each turning support part comprises: at least one first turning plate fixated on one side of one among the n number of duct members close to each other; at least one second turning plate fixated on one side of another one among the n number of duct members close to each other; a coupling member to couple one side of the first turning plate and the second turning plate to be turned; and a pressing member interposed between the first turning plate, the second plate, and the coupling member to press the first and second plates such that the first and second plates are in contact to each other. One side of duct members communicated with an external ventilation unit among the n number of duct members is coupled to a bracket fixated on an operated area to be turned. The present invention drastically increases a discharge efficiency of gas, dust, and smell occurred in an operation site by forming the arm type ventilation device of the duct members with a large diameter.</p> |
