Hood system having built-in rotor

Abstract

The present invention relates to a hood system having a built-in rotor, capable of discharging contaminated gas generated by a source of contamination in a timely manner to prevent the contamination of indoor air in advance. The hood system having a built-in rotor comprises a housing, an exhaust fan, said rotor, and a discharge unit. The housing is arranged on top of the contamination source, and the lower side thereof has an inlet port for feeding in contaminated gas. The exhaust fan is arranged inside the housing, and rotates by means of a rotation-driving device so as to forcibly exhaust the contaminated gas. The rotor rotates together with the exhaust fan to prevent the contaminated gas from diffusing into an indoor area. The discharge unit is arranged on an upper surface of the housing so as to discharge the contaminated gas suctioned by the exhaust fan to the outside.

1 . A hood system with a built-in rotor, the system comprising:
 a housing that is disposed at an upper end of a pollution generating device, and that includes an inlet at a lower side through which contaminated gas is drawn in;   an exhaust fan that is installed inside the housing, and rotates by a rotational drive device to forcibly discharge contaminated gas;   a rotor that rotates with the exhaust fan to prevent the contaminated gas from being spread; and   a discharge portion that is installed on an upper surface of the housing, and that discharges the contaminated gas suctioned by the exhaust fan.   
     
     
         2 . The system of  claim 1 , wherein the rotor comprises:
 an axial core portion that is connected to the exhaust fan by an identical axis;   a first blade that is connected to the axial core portion, and that suctions the contaminated gas generated by the pollution generating device;   a body portion that is connected to the axial core portion to surround the first blade, and that is formed in a cylindrical shape with an upper portion and a lower portion opened;   a second blade that is formed on an outer surface of the body portion, and that generates vortex and a curtain flow by blowing wind at a lower end.   
     
     
         3 . The system of  claim 2 , wherein the body portion of the rotor has a plurality of holes that are spaced apart. 
     
     
         4 . The system of  claim 1 , wherein the housing is formed in a cone shape with a narrower top and a wider bottom.