Kitchen hood device

Abstract

The invention provides a kitchen hood composed of several independently activated units, providing an efficient evacuation of cooking fumes from the cooking area with lowered energy demands and with less noise.

1 . A composite kitchen hood for evacuating the cooking fumes from above a cooking area, the area being defined by the upper surface of an electrical or gas stove, the hood comprising a plurality of evacuation units, each unit comprising
 i) an inlet through which said fumes enter the evacuation unit;   ii) a duct which connects the inlet with a sucking means;   iii) sucking means for creating the pressure gradient oriented in said duct toward said inlet; and   iv) lifting means for changing the height of said inlet above said cooking area, and for fixing said height at a desired value;   
       wherein said sucking means of said plurality of evacuation units are activated, increase or decrease the sucking power, or switch the power on or off independently of each other, and wherein said lifting means of said plurality of evacuation units lower the inlets of said units nearer to said cooking area independently of each other, thereby optimally adjusting the position of said units above said cooking points, whereby lowering the energy consumption, reducing noise level, and obviating the use of a canopy-like cover which extends over the cooking area and presents an obstacle for a free access above the cooking area. 
     
     
         2 . A composite kitchen hood according to  claim 1  for evacuating the cooking fumes from above a cooking area, the area being defined by the upper surface of an electrical or gas stove, the hood comprising a plurality of evacuation units, each unit comprising
 i) an inlet through which said fumes enter the evacuation unit; 
 ii) a duct which connects the inlet with a sucking means; 
 iii) a sucking means for creating the pressure gradient oriented in said duct toward said inlet; and 
 iv) lifting means for changing the height of said inlet above said cooking area, and for fixing said height at a desired value; 
 
       wherein said sucking means of said plurality of evacuation units are activated independently of each other, wherein said lifting means of said plurality of evacuation units, independently of each other, lower the inlets of said units nearer to said cooking area and lift the inlets of said units farther from said cooking area, wherein each inlet of said plurality of units has an area lower than said cooking area, and wherein said inlets of said plurality of evacuation units have a total area which is not greater than said cooking area. 
     
     
         3 . A composite kitchen hood according to  claims 1  for evacuating the cooking fumes from above a cooking area defined by the upper surface of an electrical or gas stove, the hood comprising a plurality of evacuation units, each unit comprising
 i) an inlet through which said fumes enter the hood; 
 ii) a duct which is thinner than said inlet and which connects the inlet with a sucking means; 
 iii) a sucking means for creating the pressure gradient oriented in said duct toward said inlet; and 
 iv) lifting means for changing the height of said inlet above said cooking area and for fixing said height at a desired value; 
 
       wherein said sucking means and said lifting means of said plurality of evacuation units are activated independently of each other, and wherein the total area of the inlets of said plurality of evacuation units is less than said cooking area. 
     
     
         4 . A composite kitchen hood according to  claims 1 , said upper surface accommodating a number of electrical hot plates, a number of gas burners, or an electrical inductive plate. 
     
     
         5 . A composite kitchen hood according to  claims 4 , wherein the number of said evacuation units is equal to or less than the number of said electrical hot plates or said gas burners. 
     
     
         6 . A composite kitchen hood according to  claims 4 , further comprising the shifting means enabling to horizontally change the positions of the units above the cooking area, particularly above an electrical inductive plate. 
     
     
         7 . A composite kitchen hood according to  claims 1 , for evacuating the cooking fumes from above a cooking area defined by the upper surface of an electrical or gas stove accommodating a number of electrical hot plates or gas burners, wherein the number of said evacuation units is equal to the number of said hot plates or gas burners, and wherein each evacuation unit essentially covers one plate or burner. 
     
     
         8 . A composite kitchen hood according to  claims 1 , for evacuating the cooking fumes from above a cooking area defined by the upper surface of an electrical or gas stove accommodating a number of electrical hot plates, a number of gas burners, or an electrical induction plate, wherein at least some of the evacuation units are activated when at least some of plates or burner work. 
     
     
         9 . A composite kitchen hood according to  claim 8 , wherein the evacuation units which are active are lowered nearer to the working electrical hot plates, nearer to the working burners, or nearer to the working point on the electrical inductive plate (active cooking sites) and/or are shifted to be above the active cooking site. 
     
     
         10 . A composite kitchen hood according to  claim 1  for evacuating the cooking fumes from above a cooking area, the area being defined by the upper surface of an electrical or gas stove on which there is at least one heat source (active cooking point), the hood comprising a plurality of evacuation units activated independently of each other, wherein one of said units is brought nearer to said active cooking point while said lifting and shifting means precisely and optimally adjust the position of said unit above said cooking point, whereby ensuring healthy kitchen ambience, lowering the energy consumption, and reducing noise level, compared to a non-composite hood. 
     
     
         11 . A composite kitchen hood according to  claim 1 , wherein the air with said fumes is vented out of the building. 
     
     
         12 . A composite kitchen hood according to  claim 1 , wherein the air with said fumes is filtered and recirculated inside the kitchen. 
     
     
         13 . A composite kitchen hood according to  claim 1  for evacuating the cooking fumes from above a cooking area, comprising a plurality of evacuation units, distribution means for regulating the evacuation intensity for each evacuation unit, lifting means for changing the height of each unit above said cooking area, and optionally shifting means for changing the horizontal position of each unit above the cooking area, wherein said distribution means activate said units independently of each other, and wherein said lifting means lower each unit nearer to said cooking area independently of each other. 
     
     
         14 . A kitchen equipment comprising a kitchen stove, and the composite kitchen hood of  claim 1  for evacuating the cooking fumes from above a cooking area defined by the upper surface of said stove, the stove accommodating a number of electrical hot plates, a number of gas burners, or an electrical inductive plate, and the hood comprising a plurality of evacuation units, each unit being independently activated and lowered nearer to a working plate or burner, wherein each evacuation unit comprises
 i) an inlet through which said fumes enter the hood; 
 ii) a duct which connects the inlet with a sucking means; 
 iii) sucking means for creating the pressure gradient oriented in said duct toward said inlet; 
 iv) lifting means for changing the height of said inlet above said cooking area, and for fixing said height at a desired value; and 
 v) optionally shifting means for changing the horizontal position of said inlet above the cooking area; 
 
       wherein each of said units have an inlet area which is less than said cooking area. 
     
     
         15 . A kitchen equipment according to  claim 14 , comprising a kitchen stove and a composite kitchen hood (complementary hood), the stove comprising a number of electrical hot plates or gas burners, and the complementary hood comprising the same number of evacuation units, each unit being located above one plate of burner, each unit comprising a lifting means for changing the height of said unit above said cooking area, wherein said inlets of said plurality of evacuation units have a total area which is not greater than said cooking area. 
     
     
         16 . A kitchen equipment according to  claim 14 , comprising a kitchen stove and a composite kitchen hood (complementary hood), the hood comprising a plurality of evacuation units, each unit comprising lifting means for changing the height of said unit above said cooking area and shifting means enabling to horizontally change the positions of the units above the cooking area, wherein said inlets of said plurality of evacuation units have a total area which is not greater than said cooking area. 
     
     
         17 . A kitchen equipment according to  claim 14 , comprising a kitchen stove and a composite kitchen hood (complementary hood), the stove comprising a number of electrical hot plates, a number of gas burners, or an electrical inductive plate, and the complementary hood comprising
 i) a plurality of evacuation units;   ii) distribution means for regulating the evacuation intensity for each evacuation unit;   iii) lifting means for changing the height of each unit above said cooking area; and   iv) optionally shifting means for changing the horizontal position of each unit above the cooking area;   
       wherein said distribution means activate said units independently of each other, and wherein said lifting means and said optional shifting means move said units, independently of each other, nearer to the working electrical hot plates, nearer to the working burners, or nearer to the working point on the electrical inductive plate (nearer to the active cooking sites).