Patent ID: 8342233

Claim:
A device for a complete cooling beam ( 1 ) of an air handling system in which the cooling beam has a pressure chamber ( 2 ) with holes ( 3 ) through which supply air (L 1 ) flows out to a mixing chamber ( 4 ) to which recirculating air (L 2 ) from a room also flows via a cooling/heating coil ( 5 ), where the recirculating air (L 2 ) is mixed with the supply air (L 1 ) whereupon the cooled or heated recirculating air (L 2 ) together with the supply air (L 1 ) flows out to the room, the amount of the supply air (L 1 ) being regulated by a displaceable regulating strip ( 6 ) having a number of openings ( 7 ) that are orientated into groups ( 8 ) where the openings ( 7 ) in each of the groups ( 8 ) has different dimensions and where, in a surface ( 9 ) of the pressure chamber ( 2 ) lying under the regulating strip ( 6 ) there is the hole ( 3 ) for every group ( 8 ) of the regulating strip ( 6 ) and when the displaceable regulating strip ( 6 ) is biased to a position such that a chosen opening ( 7 ) is coordinated with the hole ( 3 ) of the surface ( 9 ), always the same number of openings ( 7 ) are uncovered/opened from the pressure chamber ( 2 ) to the mixing chamber ( 4 ) and the openings ( 7 ) always have the same placement and an axial center line of each of the openings is aligned in the same direction relative to the cooling/heating coil ( 5 ) and relative the mixing chamber ( 4 ), and the openings ( 7 ) in the regulating strip ( 6 ) and the holes ( 3 ) in the surface ( 9 ) are placed along the whole length of the mixing chamber ( 4 ) and since the surface ( 9 ), and consequently the regulating strip ( 6 ), has a sloping direction in relation to the cooling/heating coil ( 5 ), a defined air flow ratio for the supply air (L 1 ) and for the recirculating air (L 2 ) is obtained.