Kitchen ventilator with recirculation function

Abstract

A kitchen ventilator with recirculation function comprising a hood with a inhale plate installed obliquely on the bottom, a inhale hole is on the inhale plate; an exhaust motor is inside the hood, the exhaust motor connects to a duct; an air re-flow system is to have an air-returning channel on the back of the hood, the bottom of the air-returning channel forms at least one ventilator on the inhale plate; an air-returning motor is inside the air-returning channel to control the air flow direction. The present invention can avoid grease gathering on the wall, over-speeding of the exhaust motor to save energy and exhausting large quantity of warm indoor air.

What is claimed is:  
     
         1 . A kitchen ventilator with recirculation function comprising:  
       a hood with a inhale plate installed obliquely on the bottom, a inhale hole located on said inhale plate, an exhaust motor located inside said hood, an air re-flow system installed inside said hood, said air re-flow system further compromising: 
 an air-returning channel located on the back of said hood, the top of said air-returning channel links to the exhaust duct, the bottom of said air-returning channel forms at least one ventilator,  
 an air-returning motor located inside said air-returning channel.  
 
     
     
         2 . The kitchen ventilator with recirculation function recited in  claim 1 , wherein an air-returning grease filter being installed on top of said air-returning motor.  
     
     
         3 . The kitchen ventilator with recirculation function recited in  claim 2 , wherein said air-returning grease filter being installed obliquely.  
     
     
         4 . The kitchen ventilator with recirculation function recited in  claim 3 , wherein an air-returning grease pipe being installed on bottom of said air-returning grease filter.  
     
     
         5 . The kitchen ventilator with recirculation function recited in  claim 1 , wherein said air-returning motor being controlled by a circuitry to run clockwise or reversely.  
     
     
         6 . The kitchen ventilator with recirculation function recited in  claim 5 , wherein said air-returning motor exhausting hot air from said exhaust duct, the air being expelled from said ventilator to generated air curtain on the wall surface that is on the back of the main body.  
     
     
         7 . The kitchen ventilator with recirculation function recited in  claim 5 , wherein said air-returning motor running reversely to have the smoke air inhale by said ventilator.  
     
     
         8 . The kitchen ventilator with recirculation function recited in  claim 1 , wherein said inhale hole being installed obliquely.  
     
     
         9 . The kitchen ventilator with recirculation function recited in  claim 8 , wherein several upper fixing slots and lower fixing slots located on top and bottom of said inhale hole.  
     
     
         10 . The kitchen ventilator with recirculation function recited in  claim 9 , wherein a grease pipe connecting to said lower fixing slot.  
     
     
         11 . The kitchen ventilator with recirculation function recited in  claim 9 , wherein said grease filter is in rectangular curve shape with top and bottom fixed on said upper fixing slots and said lower fixing slots.  
     
     
         12 . The kitchen ventilator with recirculation function recited in  claim 11 , wherein two fixed tenons located are on the bottom of said grease filter to insert into said lower fixing slots, two moveable tenons located on top of said grease filter to insert into the said upper fixing slots.  
     
     
         13 . The kitchen ventilator with recirculation function recited in  claim 9 , wherein said grease filter being in a curve shape and bent inward.  
     
     
         14 . The kitchen ventilator with recirculation function recited in  claim 13 , wherein said grease filter consisting of an air conducting cover, several filter layers a back net.  
     
     
         15 . The kitchen ventilator with recirculation function recited in  claim 13 , wherein said air conducting cover having many inlet holes bent inward.  
     
     
         16 . The kitchen ventilator with recirculation function recited in  claim 13 , wherein said filter layers being made of metal plate in wave shape.  
     
     
         17 . The kitchen ventilator with recirculation function recited in  claim 1 , wherein said filter layers' wave directions are vertical to each other.