Duct ventilation apparatus

Abstract

A duct ventilation apparatus according to the present invention, which is installed in the interior of a duct, is equipped with a rotating means comprising a shaft having a plurality of blades attached on the outer circumferential surface thereof, the shaft having a length and rotating by being connected to a motor, wherein the rotating means is disposed in the inflected part of the flow space in the interior of the duct.

1 . A duct ventilation apparatus which is installed in a duct, the duct ventilation apparatus comprising:
 a rotating means which has a plurality of blades mounted at an outer circumference of a shaft which has a length and is rotated by being connected with a motor,   wherein the rotating means is installed in a bent portion in a flow space in the duct.   
     
     
         2 . The duct ventilation apparatus of  claim 1 , wherein the rotating means is installed at an edge of the bent portion in the flow space of the duct. 
     
     
         3 . The duct ventilation apparatus of  claim 2 , wherein the rotating means is installed in a space at a convex edge between the edges of the bent portion in the flow space of the duct. 
     
     
         4 . The duct ventilation apparatus of  claim 2 , wherein the rotating means is installed in a space at a concave edge between the edges of the bent portion in the flow space of the duct. 
     
     
         5 . The duct ventilation apparatus of  claim 2 , wherein an inner partition wall and an outer partition wall are formed at both of the edges of the bent portion in the flow space of the duct, respectively, so as to divide the flow space into a main flow hole and a pair of sub flow holes, and the rotating means are formed in the sub flow holes. 
     
     
         6 . The duct ventilation apparatus of  claim 3 , wherein an inner partition wall is formed at a concave edge between the edges of the bent portion in the flow space of the duct so as to divide the flow space into a main flow hole and a sub flow hole, and the rotating means is installed in the sub flow hole formed at the concave edge. 
     
     
         7 . The duct ventilation apparatus of  claim 4 , wherein an outer partition wall is formed at a convex edge between the edges of the bent portion in the flow space of the duct so as to divide the flow space into a main flow hole and a sub flow hole, and the rotating means is installed in the sub flow hole formed at the convex edge. 
     
     
         8 . The duct ventilation apparatus of  claim 5  or  6 , wherein the outer partition wall includes a first partition wall which is formed at the convex edge, has an arc shape, and accommodates a part of the rotating means, and a second partition wall which is spaced apart from the convex edge at an interval and has the same curvature as the bent portion. 
     
     
         9 . The duct ventilation apparatus of  claim 5  or  7 , wherein the inner partition wall includes a first partition wall which is formed at the concave edge, has an arc shape, and accommodates a part of the rotating means, and a second partition wall which connects a horizontal surface and a vertical surface of the first partition wall and has the same curvature as the bent portion. 
     
     
         10 . The duct ventilation apparatus of any one of  claims 5 ,  6 , and  7 , wherein air pressure in the sub flow hole is increased by an operation of the rotating means, and an air pressure difference occurs between the sub flow hole and the main flow hole, such that a flow velocity is increased.