Heating cooking appliance and burner system of the same

Abstract

A heating cooking appliance and a burner system of the same are provided. The heating cooking appliance includes a case, a plate that covers the case, a burner system under the plate, and an exhaust unit at a side of the plate. The burner system includes a burner pot providing a mixing space in which gas and air are uniformly mixed, a mixing tube through which the gas and air are supplied into the burner pot, and a nozzle maintained a predetermined distance from a mixing tube unit. A discharger of the nozzle is reduced in diameter. A discharging hole of the nozzle is formed to have a length/diameter ratio of 0.9 to 1.1. A venturi marking a boundary between a convergence and a divergence with respect to the diameter of the mixing tube is disposed at a middle part when the mixing tube is divided into three equal parts.

1 . A heating cooking appliance comprising:
 a case;   a plate covering a top of the case;   a burner system under the plate; and   an exhaust unit at a side of the plate,   wherein the burner system includes   a burner pot providing a mixing space in which at least gas and air are uniformly mixed,   a mixing tube having a venturi defining a boundary between a convergence and a divergence thereof and introducing the gas and air into the burner pot, and   a nozzle maintained a predetermined distance from a mixing tube.   
   
   
       2 . The heating cooking appliance according to  claim 1 , wherein a discharging hole of the nozzle is formed such that a ratio of a length (L)/a diameter (D) of the discharging hole is in a range of 0.9 to 1.1. 
   
   
       3 . The heating cooking appliance according to  claim 1 ,
 wherein the venturi is disposed at a middle part when a total length of the mixing tube is divided into three equal parts.   
   
   
       4 . The heating cooking appliance according to  claim 1 , wherein the mixing tube and the nozzle are provided in plurality, and the plurality of the mixing tubes and the nozzles are disposed at a side of the burner port. 
   
   
       5 . The heating cooking appliance according to  claim 4 , wherein the nozzles are fixed to a nozzle holder. 
   
   
       6 . A burner system comprising:
 a burner pot providing a mixing space in which at least gas and air are uniformly mixed;   a mixing tube through which the gas and air are supplied into the burner pot; and   a nozzle maintained a predetermined distance from a mixing tube unit,   wherein the nozzle is provided with a flow guider of which the outer surface diameter is gradually reduced, and a momentum of a gas flow discharged from the nozzle is uniformly transferred to ambient air, such that air flowing along the flow guider flows in concert with the gas flow.   
   
   
       7 . The burner system according to  claim 6 , wherein the diameter of the discharger is reduced from approximately 5 mm to 4 mm. 
   
   
       8 . The burner system according to  claim 6 , wherein the outer surface of the end of the nozzle is chambered. 
   
   
       9 . The burner system according to  claim 6 , wherein the flow guider is entirely rounded. 
   
   
       10 . The burner system according to  claim 6 , wherein the mixing tube is fixed to a side surface of the burner pot in a shape of a mixing tube unit having a plurality of mixing tubes. 
   
   
       11 . The burner system according to  claim 6 , wherein a discharging hole of the nozzle is formed such that a ratio of a length L/a diameter D of the discharging hole is 0.9 to 1.1. 
   
   
       12 . A burner system comprising:
 a burner pot including a mixing space in which at least gas and air are uniformly mixed;   a mixing tube through which the gas and air are supplied into the burner pot; and   a nozzle maintaining a predetermined distance apart from the mixing tube,   wherein a discharging hole of the nozzle is formed such that a ratio of a length L/a diameter D of the discharging hole is in a range of 0.9 to 1.1, to increase an amount of air introduced into the mixing tube.   
   
   
       13 . The burner system according to  claim 12 , wherein an outer surface diameter of the end of the discharging hole is gradually reduced toward a front direction. 
   
   
       14 . The burner system according to  claim 12 , wherein a ratio of the length L/the diameter D of the discharging hole is 1.0. 
   
   
       15 . The burner system according to  claim 12 , wherein a single nozzle holder accommodates a plurality of nozzles.