Burner for a heater with improved baffle plate

Abstract

A burner ( 10 ) for a heater, especially for use in motor vehicles, with an essentially axially symmetrical combustion chamber ( 22 ) and a baffle plate ( 36 ) which is located in the combustion chamber. The baffle plate ( 36 ) has a defined curvature in an axial direction and that there is a curvature in the direction of the burnout zone ( 32 ). An outer periphery of the baffle plate defines a plane and a maximum axial distance of the baffle plate from this plane D m and the diameter of the baffle plate B d have dimensions that have a ratio D m :B d relative to each other that is between 0.07 and 0.21.

1 - 13 . (canceled) 
   
   
       14 . Burner for a heater for use in motor vehicles, comprising:
 an essentially axially symmetrical combustion chamber, and   a baffle plate which is located in the combustion chamber, wherein:   the baffle plate has a defined curvature in an axial direction toward a burnout zone of the combustion chamber.   
   
   
       15 . Burner as claimed in  claim 14 , wherein
 an outer periphery of the baffle plate defines a plane and   a maximum axial distance of the baffle plate from said plane D m  and the diameter of the baffle plate B d  have dimensions that have a ratio D m :B d  relative to each other that is between 0.07 and 0.21.   
   
   
       16 . Burner as claimed in  claim 15 , wherein the ratio D m :B d  is about 0.14. 
   
   
       17 . Burner as claimed in  claim 15 , further comprising
 a burner nozzle for supplying fuel and primary air,   a heat shield between the burner nozzle and the combustion chamber, the heat shield having openings with air guide elements for supplying secondary air to the combustion chamber.   
   
   
       18 . Burner as claimed in  claim 17 , wherein the air guide elements are tabs which are integral parts of the heat shield and which project toward the combustion chamber. 
   
   
       19 . Burner as claimed in  claim 18 , wherein the tabs comprises groups of tabs, the tabs of one of the groups having a different angle relative to the surface of the heat shield than the tabs of another group 
   
   
       20 . Burner as claimed in  claim 19 , wherein the tabs comprises groups of tabs, the tabs of one of the groups being located on the heat shield at a different radial distance than the tabs of another groups. 
   
   
       21 . Burner as claimed in  claim 18 , wherein the tabs comprises groups of tabs, the tabs of one of the groups being located on the heat shield at a different radial distance than the tabs of another groups. 
   
   
       22 . Burner as claimed in  claims 17 , wherein the tabs are located on the heat shield at the same radial distance. 
   
   
       23 . Burner as claimed in  claim 17 , wherein
 the burner has a starting zone and a burnout zone and   wherein air guide elements are adapted to cause secondary air supplied to the burnout zone to have a higher angular momentum than secondary air which is supplied to the starting zone.   
   
   
       24 . Burner as claimed in  claim 17 , wherein the heat shield has an opening for through which an ignition element is inserted. 
   
   
       25 . Burner as claimed in  claim 17 , wherein
 the burner nozzle has a fuel needle for supplying fuel to the burner and a primary combustion air supply to the burner and   wherein the fuel needle has an inside diameter for producing an exit speed of the fuel during the starting phase of the burner by which fuel in essentially unatomized form reaches the starting zone.   
   
   
       26 . Burner as claimed in  claim 25 , wherein the inside diameter of the fuel needle is between 0.5 mm and 0.7 mm. 
   
   
       27 . Burner as claimed in  claim 25 , wherein the inside diameter of the fuel needle is about 0.6 mm. 
   
   
       28 . Burner as claimed in  claim 25 , wherein the starting zone is a starting chamber into which an ignition element projects. 
   
   
       29 . Burner as claimed in  claim 14 , further comprising
 a burner nozzle for supplying fuel and primary air,   a heat shield between the burner nozzle and the combustion chamber, the heat shield having openings with air guide elements for supplying secondary air to the combustion chamber.   
   
   
       30 . Burner as claimed in  claim 29 , wherein the air guide elements are tabs which are integral parts of the heat shield and which project toward the combustion chamber. 
   
   
       31 . Burner as claimed in  claim 30 , wherein the tabs comprises groups of tabs, the tabs of one of the groups having a different angle relative to the surface of the heat shield than the tabs of another group