Smoke extracting system from Korean Barbecue grill

Abstract

A novel “Korean Barbecue” smoke extractor is attached to a typical indoor air ventilation system of a “Korean Restaurant”. The smoke extractor of this invention is comprised of, including but not limited to, a flexible shrinkable metal pipe of a diameter 6 to 20 cm, an oil collector, a crossing bar, a string for drawing up the crossing bar and the oil collector, and a means for winding and releasing of the string. The oil collector is attached at the bottom end of the metal pipe by a means of, including but not limited to, a screw, a welding, a metal ribbon, a clamp, and a flange. Pluralities of holes are punched along the surfaces for a suction of the smoke and the fumes generated from the grill. The same numbers of metal tubes are soldered to the oil collector holes for connecting the outer surface of the oil collector to the inside of the metal tube. The length of the metal tubes and the concave inner surface of the oil collector hold the oil condensed from the fumes. The upper part of the metal pipe is attached to an air ventilating duct which is installed crossing over the ceiling of a restaurant indoor by means of, including but not limited to, a flange, a metal ribbon, a welding and a screw. The lower bottom of the smoke extractor is located from 5 to 60 cm above the barbecue grill when the metal pipe is fully stretched. The smoke extractor of this invention is flexible to move sideways for collecting smokes from different sites of a grill.

What is claimed is,  
     
         1 . A novel means of smoke extracting system attached to an indoor air ventilation system for a “Korean Restaurant” is comprised of a flexible and shrinkable metal pipe, an hemi-sphere shaped oil collector having polarities of holes on the surface and the same number of metal tubes soldered thereon and attached at the bottom end of the metal pipe, a crossing bar soldered across the oil collector, a string for drawing up the crossing bar and the oil collector, a means for winding and releasing the string, a flange and two metal ribbons.  
     
     
         2 . The flexible and shrinkable metal pipe, in  claim 1 , is made of Aluminum.  
     
     
         3 . The length of the flexible and shrinkable metal pipe, in  claim 1 , changes from 30 cm when retracted and to 120 cm when fully stretched.  
     
     
         4 . Diameter of the metal pipe, in  claim 1 , is in the range of 5 to 20 cm.  
     
     
         5 . The hemi-sphere oil collector, in  claim 1 , is made of stainless steel.  
     
     
         6 . Diameter of the hemi-sphere oil collector, in  claim 1 , is in the range of 5 to 20 cm.  
     
     
         7 . The number of the holes on the surface of the oil collector, in  claim 1 , is in the range of 1 to 100.  
     
     
         8 . Diameter of the metal tubes soldered to the holes, in  claim 1 , is in the range of 1 mm to 6 mm.  
     
     
         9 . Length of the metal tubes, in  claim 1 , is in the range of 1 to 20 cm.