Air exhaust valve for ventilating rooms

Abstract

The invention relates to an air exhaust valve ( 1 ). The air exhaust valve ( 1 ) comprises an inner baffle element ( 10 ) located at a radially inside position and an outer baffle element ( 20 ) located at a radially outside position and surrounding said inner baffle element ( 10 ) for defining an air flow space ( 70 ) between said inner baffle element ( 10 ) and said outer baffle element ( 20 ). There are provided an inner plurality of slits or grooves in said inner baffle element ( 10 ) and/or an outer plurality of slits or grooves ( 21 ) in said outer baffle element ( 20 ).

1 . An air exhaust valve ( 1 ) for ventilating rooms and to be installed in a ventilation duct opening in a wall or ceiling of a room, said air exhaust valve ( 1 ) comprising an inner baffle element ( 10 ) located at a radially inside position and an outer baffle element ( 20 ) located at a radially outside position and surrounding said inner baffle element ( 10 ) for defining an air flow space ( 70 ) between said inner baffle element ( 10 ) and said outer baffle element ( 20 ), said air flow space having an upstream opening ( 70   a ) and a downstream opening ( 70   b ) with respect to the exhaust air flow direction through said exhaust air valve, characterized in that an inner plurality of slits or grooves are provided in said inner baffle element ( 10 ) and/or an outer plurality of slits or grooves ( 21 ) are provided in said outer baffle element ( 20 ). 
     
     
         2 . The air exhaust valve according to  claim 1 , wherein said inner plurality of slits or grooves are provided in a downstream end region of said inner baffle element ( 10 ). 
     
     
         3 . The air exhaust valve according to  claim 1 , wherein said outer plurality of slits or grooves ( 21 ) are provided in a downstream end region of said outer baffle element ( 20 ). 
     
     
         4 . The air exhaust valve according to  claim 1 , wherein said inner baffle element ( 10 ) and said outer baffle element ( 20 ) can be moved relative to each other for changing said air flow space ( 70 ) between said inner baffle element ( 10 ) and said outer baffle element ( 20 ). 
     
     
         5 . The air exhaust valve according to  claim 1 , wherein said inner baffle element ( 10 ) is rotationally symmetrical. 
     
     
         6 . The air exhaust valve according to  claim 5 , wherein said inner baffle element ( 10 ) is an inner cone element ( 10 ). 
     
     
         7 . The air exhaust valve according to  claim 1 , wherein said outer baffle element ( 20 ) is rotationally symmetrical. 
     
     
         8 . The air exhaust valve according to  claim 7 , wherein said outer baffle element ( 20 ) is an outer cone element ( 20 ). 
     
     
         9 . The air exhaust valve according to  claim 1 , wherein at least one of said inner baffle element ( 10 ) and said outer baffle element ( 20 ) is threadably mounted by a thread element having as its thread axis an axis extending across a center point of a central region of said inner baffle element ( 10 ) and said outer baffle element ( 20 ). 
     
     
         10 . The air exhaust valve according to  claim 9 , wherein at least one of said inner baffle element ( 10 ) and said outer baffle element ( 20 ) has angularly spaced surface markings positioned along a circle having as its center said center point of said central region of said inner baffle element ( 10 ) and said outer baffle element ( 20 ). 
     
     
         11 . The air exhaust valve according to  claim 9 , wherein an axial spacing (distance) between said inner baffle element ( 10 ) and said outer baffle element ( 20 ) is manually adjustable. 
     
     
         12 . The air exhaust valve according to  claim 9 , wherein the air exhaust valve comprises an adjustment and locking element ( 30 ) for locking the adjusted axial spacing (distance) between said inner baffle element ( 10 ) and said outer baffle element ( 20 ). 
     
     
         13 . The air exhaust valve according to  claim 1 , wherein said air exhaust valve ( 1 ) comprises a middle baffle element ( 60 ) located at a radially intermediate position between said inner baffle element ( 10 ) and said outer baffle element ( 20 ) for partially filling said air flow space ( 70 ) between said inner baffle element ( 10 ) and said outer baffle element ( 20 ). 
     
     
         14 . The air exhaust valve according to  claim 13 , wherein a middle plurality of slits or grooves ( 61 ) are provided in said middle baffle element ( 60 ). 
     
     
         15 . The air exhaust valve according to  claim 13 , wherein said middle plurality of slits or grooves ( 61 ) are provided in a downstream end region of said middle baffle element ( 60 ). 
     
     
         16 . The air exhaust valve according to any one of  claim 13 , wherein said middle baffle element ( 60 ) can be moved relative to said inner baffle element ( 10 ) and said outer baffle element ( 20 ) for changing said air flow space ( 70 ) between said inner baffle element ( 10 ) and said outer baffle element ( 20 ). 
     
     
         17 . The air exhaust valve according to any one of  claim 13 , wherein said middle baffle element ( 60 ) is rotationally symmetrical. 
     
     
         18 . The air exhaust valve according to  claim 17 , wherein said middle baffle element ( 60 ) is a middle cone element ( 60 ). 
     
     
         19 . The air exhaust valve according to  claim 13 , wherein said middle baffle element ( 60 ) comprises a plurality of holes at its surface. 
     
     
         20 . The air exhaust valve according to  claim 13 , wherein said middle baffle element ( 60 ) is a solid element having blind holes at its surface. 
     
     
         21 . (canceled) 
     
     
         22 . (canceled) 
     
     
         23 . (canceled)