Method and apparatus for removal of grease, smoke and odor from exhaust systems

Abstract

A grease, smoke, and odor extraction system includes an outer housing including an entrance passage and an exit duct for drawing the exhaust airstream through the housing, the entrance passage is fitted with a pipe which discharges ozone gas into the exhaust air and, alternatively, a water supply manifold which directs the water into the ozonated exhaust stream in such as way as to create a vortex of water droplets in the ozonated exhaust stream to encourage the extraction of grease, fumes, and other contaminants from the stream. Several alternate embodiments as described including a housing, an ozone generator, an ozone injector into the housing in combination with a baffle member and alternatively water and filter members for use with kitchen exhaust systems as well as water treatment systems and the like.

1 . A ventilating system for extracting grease, odors and solid particles from an exhaust airstream, said ventilating system comprising: 
 a housing including an entrance passage and an exit duct;    means for generating ozone;    means for inducing the flow of said exhaust airstream through said entrance passage;    at least one filter member in said housing, said filter member having a pair of spaced filter supports and a baffle filter therebetween, said filter member extending along a substantial length of said housing; and    means for injecting said ozone into said exhaust airstream whereby to provide even distribution of said ozone into said exhaust airstream.    
   
   
       2 . A ventilating system according to  claim 1  wherein said ozone generating means of an oxygen generator includes a cooling fan, adjustable flow gauges and electrical control panel.  
   
   
       3 . A ventilating system according to  claim 1  wherein said ozone is injected into said housing from a location above said filter member.  
   
   
       4 . A ventilating system according to  claim 1  wherein said injecting means includes a rigid stainless steel pipe with equally spaced perforations.  
   
   
       5 . A ventilating system according to  claim 1  wherein said filter member extends diagonally along a substantial length of said housing.  
   
   
       6 . A ventilating system according to  claim 1  wherein said housing member is defined by parallel sides, a lower entrance passage and an upper exhaust duct.  
   
   
       7 . A ventilating system according to  claim 1  wherein said filter member is placed directly in the flow of said exhaust airstream and directly below said exit duct.  
   
   
       8 . A ventilating system according to  claim 1  wherein said ozone generating means includes an electrode.  
   
   
       9 . A ventilating system for extracting grease, odors and contaminants from an exhaust airstream, said ventilating system comprising: 
 a housing having a lower entrance passage for said exhaust airstream, an upper exit duct, means for filtering said exhaust airstream;    means for producing ozone;    means for injecting said ozone into said housing whereby to provide even distribution of said ozone gas into the exhaust airstream; and    means for inducing the outward flow of said exhaust airstream through said upper exit duct.    
   
   
       10 . A ventilating system according to  claim 9  wherein said filter means includes side support brackets and a filter member extending diagonally along a substantial length of said housing.  
   
   
       11 . A ventilating system according to  claim 9  wherein said injecting means includes a rigid stainless steel pipe with equally spaced perforations.  
   
   
       12 . A ventilating system according to  claim 9  wherein said filter means includes at least one filter.  
   
   
       13 . A ventilating system according to  claim 9  wherein said housing includes means for discharging water into said housing.  
   
   
       14 . A ventilating system according to  claim 13  wherein said discharge means includes a manifold extending along an upper portion of said housing and terminating in a recirculation pump.  
   
   
       15 . A ventilating system according to  claim 14  wherein said housing includes means for intermixing said exhaust airstream, said ozone and said water.  
   
   
       16 . A ventilating system according to  claim 15  wherein said intermixing means includes spaced diverter panels.  
   
   
       17 . A ventilating system according to  claim 13  wherein said housing includes means for collecting and recirculating excess water for reusage.  
   
   
       18 . A ventilating system according to  claim 9  wherein said housing includes a dry chamber defined by dry filter means for removing particulate matter.  
   
   
       19 . A ventilating system according to  claim 18  wherein said dry filter means includes at least one glass fiber filter or charcoal filter.  
   
   
       20 . A ventilating system for extracting grease, fumes and solid particles from an exhaust airstream created by a cooking appliance, said ventilating system comprising: 
 a housing including an entrance and exit passage;    means for inducing the flow of said exhaust airstream through said housing;    means for producing ozone;    means for injecting ozone into said housing whereby to provide even distribution of ozone gas into the exhaust airstream;    diffuse means for intermixing of said ozone with said exhaust airstream;    filter means for removal of particulate matter from said housing; and    said diffuse means and said filter means traversing the path of flow of said exhaust airstream.    
   
   
       21 . A ventilating system according to  claim 20  wherein said housing member is defined by a parallel ceiling and floor, a side entrance passage and an opposite side exhaust duct.  
   
   
       22 . A ventilating system according to  claim 20  wherein said diffuse means includes a perforated metal plate.  
   
   
       23 . A ventilating system according to  claim 22  wherein said diffuser means further includes spaced diverter panels.  
   
   
       24 . A ventilating system according to  claim 20  wherein said diffuse means is disposed in parallel relation to said filter means.  
   
   
       25 . A ventilating system according to  claim 20  wherein said filter means includes high efficiency glass fiber filters.  
   
   
       26 . A ventilating system according to  claim 20  wherein said filter means includes a charcoal filter.  
   
   
       27 . A ventilating system according to  claim 20  wherein said diffuse means and said filter means traverse a width of said housing.