Range hood with vortex fan

Abstract

A range hood range hood according to an embodiment of the present invention is provided with a vortex fan installed on an upper portion of a kitchen range to suck and remove contaminants such as odor or smoke generated during cooking. The range hood includes a housing with an exhaust fan installed inside thereof, an upper case coupled to a lower end of the housing and guiding an airflow generated by a vortex fan, wherein a through hole connected to the exhaust fan is formed at a ceiling surface of the upper case, and a lower filter case installed spaced apart from a bottom of the vortex fan.

What is claimed is: 
     
         1 . A range hood, comprising:
 a housing with an exhaust fan installed inside thereof;   an upper case coupled to a lower end of the housing and guiding an airflow generated by a vortex fan, wherein a through hole connected to the exhaust fan is formed at a ceiling surface of the upper case; and   a lower filter case installed spaced apart from a bottom of the vortex fan.   
     
     
         2 . The range hood of  claim 1 , wherein an exhaust space is formed between an outer surface of the lower filter case and an inner surface of the upper case. 
     
     
         3 . The range hood of  claim 2 , further comprising:
 a plurality of supports coupled along a circumference of the lower filter case so that the lower filter case is supported by being spaced a predetermined distance below the vortex fan.   
     
     
         4 . The range hood of  claim 2 , wherein a separation space is formed between the upper surface of the lower filter case and the ceiling surface of the upper case;
 the vortex fan is disposed in the separation space; and   the airflow pushed outward by the vortex fan is discharged through the exhaust space to form a vortex in a lower outer side of the lower filter case.   
     
     
         5 . The range hood of  claim 1 , wherein the upper case has a ceiling surface where the through hole is formed, and an inclined surface inclined downward along a circumference of the ceiling surface. 
     
     
         6 . The range hood of  claim 1 , wherein a mounting hole is formed through the lower filter case, and a filter member is coupled to the mounting hole to face the vortex fan. 
     
     
         7 . The range hood of  claim 1 , further comprising:
 a driving motor installed inside the housing to supply power for operation of the exhaust fan.   
     
     
         8 . The range hood of  claim 1 , wherein the vortex fan is coupled to a bottom of the rotating shaft of the exhaust fan protruding to a bottom of the ceiling surface of the upper case through the through hole. 
     
     
         9 . The range hood of  claim 3 , wherein one end of the plurality of supports is coupled to an upper surface of the lower filter case along a circumference of the upper surface of the lower filter case; and
 the other end of the plurality of supports is coupled to the ceiling surface of the upper case.   
     
     
         10 . The range hood of  claim 3 , wherein one end of the plurality of support is coupled to an outer surface of the lower filter case along an outer circumference of the lower filter case; and
 the other end of the plurality of supports is coupled to an inner side of the upper case.   
     
     
         11 . The range hood of  claim 1 , wherein the upper case has a shape that gradually increases in width from a top to a bottom. 
     
     
         12 . The range hood of  claim 1 , wherein the vortex fan comprises:
 a shaft part which has a hollow cylindrical shape;   a circular band member formed to be spaced apart from a radially outer side of the shaft part to surround the shaft part;   a plurality of connecting rods extending radially to an inner surface of the circular band member along an outer circumference of the shaft part;   a rotating plate that is formed to extend in a form of a ring along an outer circumference of the circular band member; and   a plurality of pin members spaced apart from the rotating plate by a predetermined distance and formed vertically.