Burner case

Abstract

A burner case ( 14 ) has at least one burner ( 11 ) therein and has an upper surface ( 12 ) formed with at least one opening ( 13 ). A flame produced by the burner ( 11 ) is introduced externally through the opening ( 13 ) for heating an object put on the upper surface ( 12 ) of the burner case ( 14 ). The upper surface ( 12 ) of the burner case ( 14 ) is formed along the opening ( 13 ) with an upwardly projecting louver ( 15 ). The louver acts as a windshield for the flame. For instance, the opening ( 13 ) is an annular opening, and the louver ( 15 ) is formed in inclination along the annular opening at an outer edge of the annular opening.

What is claimed is:  
     
         1 . A burner case in which at least one burner is to be arranged and which has an upper surface formed with at least one opening, 
 a flame produced by said burner being introduced externally through said opening for heating an object put on said upper surface of said burner case,    said upper surface being formed along said opening with an upwardly projecting louver which acts as a windshield for said flame.    
     
     
         2 . The burner case as set forth in    claim 1   , wherein said opening is an annular opening, and said louver is formed in inclination along said annular opening at an outer edge of said annular opening.  
     
     
         3 . The burner case as set forth in    claim 2   , wherein said opening is comprised of a plurality of annular openings coaxial with one another, and said louver is formed in the same inclination along each of said annular openings.  
     
     
         4 . The burner case as set forth in    claim 3   , wherein said louver is formed at outer edges of said annular openings.  
     
     
         5 . The burner case as set forth in    claim 2   , wherein said opening is comprised of a plurality of annular openings coaxial with one another, and louvers are formed in opposite inclination along edges of adjacent annular openings among said annular openings.  
     
     
         6 . The burner case as set forth in    claim 5   , wherein first and second louvers are formed along outer and inner edges of each of said annular openings, respectively, said first and second louvers being directed towards an axis of each of said annular openings.  
     
     
         7 . The burner case as set forth in    claim 1   , wherein said opening is a slit, and said louver is formed along an edge of said slit.  
     
     
         8 . The burner case as set forth in    claim 7   , wherein said louver has opposite rounded ends such that said louver surrounds said slit.  
     
     
         9 . The burner case as set forth in    claim 7   , wherein said opening is comprised of a plurality of slits arranged in parallel with one another, and said louver is formed in the same inclination along each of said slits.  
     
     
         10 . The burner case as set forth in    claim 9   , wherein said louver is formed at outer edges of said slits.  
     
     
         11 . The burner case as set forth in    claim 7   , wherein said opening is comprised of a plurality of slits arranged in parallel with one another, and said louver is formed in opposite inclination along edges of adjacent slits among said slits.  
     
     
         12 . The burner case as set forth in    claim 11   , wherein first and second louvers are formed along outer and inner edges of each of said slits, respectively, said first and second louvers being directed towards an opposite edge of each of said slits.  
     
     
         13 . The burner case as set forth in    claim 1   , wherein said upper surface is detachable from said burner case.  
     
     
         14 . A burner case in which at least one burner is to be arranged and which has an upper surface formed with at least one opening, 
 a flame produced by said burner being introduced externally through said opening for heating an object put on said upper surface of said burner case,    said upper surface being formed with a hollow projection covering said opening therewith,    said projection having a triangle cross-section such that said projection has two sidewalls, at least one of said sidewalls being designed to be able to be open and closed.    
     
     
         15 . The burner case as set forth in    claim 14   , wherein said at least one of said sidewalls is swingable around a lower end thereof relative to said upper surface of said burner case, and further comprising a sidewall stopper which keeps said at least one of said sidewalls closed.  
     
     
         16 . The burner case as set forth in    claim 15   , wherein said sidewall stopper is comprised of a hook fixed to an outer surface of said projection in the vicinity of a summit of said projection.  
     
     
         17 . The burner case as set forth in    claim 14   , wherein said upper surface is detachable from said burner case.  
     
     
         18 . A burner case in which at least one burner is to be arranged and which has an upper surface formed with at least one first opening, 
 a flame produced by said burner being introduced externally through said first opening for heating an object put on said upper surface of said burner case,    said upper surface being formed with a hollow projection covering said first opening therewith,    said projection having a triangle cross-section such that said projection has two sidewalls, at least one of said sidewalls being formed with at least one second opening,    said burner case further comprising a slide plate formed with a third opening, said slide plate being slidable along an outer surface of said at least one of said sidewalls,    said at least one of said sidewalls being open when said third opening is in alignment with said second opening, and being closed when said third opening is not in alignment with said second opening.    
     
     
         19 . The burner case as set forth in    claim 18   , wherein said upper surface is detachable from said burner case.  
     
     
         20 . A burner case in which at least one burner is to be arranged and which has an upper surface formed with at least one opening, 
 a flame produced by said burner being introduced externally through said opening for heating an object put on said upper surface of said burner case,    said burner case comprising: 
 a shield plate rotatable in said opening such that said shield plate entirely closes said opening and said shield plate at least partially opens said opening; and  
 a shield plate locker which keeps said shield plate at a desired angle relative to said opening.  
   
     
     
         21 . The burner case as set forth in    claim 20   , wherein said shield plate locker is comprised of: 
 shafts extending from said shield plate at opposite ends thereof and each having a rectangular cross-section; and    bearings formed at said upper surface to support said shafts therewith, said bearings being formed with a recess having a cross-section which is the same as a half of said rectangular cross-section of said shafts.    
     
     
         22 . The burner case as set forth in    claim 20   , wherein said upper surface is detachable from said burner case.