A system for supplying air to a room

Abstract

A system for supplying air under the ceiling of a room comprising a pair of air inlet openings arranged side by side and configured to supply a pair of air streams into the room along the ceiling. The pair of air inlet openings are controllable to assume a first configuration where the supplied pair of air streams have first air stream directions spanning a first span angle and form a first angle with the ceiling, and the pair of air streams are substantially distinct air streams; and a second configuration where the supplied pair of air streams have second air stream directions spanning a second span angle smaller than the first span angle and form a second angle with the ceiling and are directed lower than in the first configuration, and the pair of air streams combine to form a combined air stream.

1 . A system for supplying air under the ceiling ( 21 ) of a room, the system comprising a pair of air inlet openings ( 10 ,  11 ) arranged side by side at a horizontal distance (d) from each other, each air inlet being configured to supply an air stream into the room in an air stream direction having a direction component parallel to the ceiling, wherein each inlet comprises a set of non-horizontal non-vertical tilted baffles controllable to assume
 a first configuration where the supplied pair of air streams have first air stream directions spanning a first span angle and form a first angle with the ceiling, and   a second configuration where the supplied pair of air streams have second air stream directions spanning a second span angle and form a second angle with the ceiling,   wherein the first span angle is different from the second span angle, and the first angle with the ceiling is different from the second angle with the ceiling.   
     
     
         2 . A system according to  claim 1  wherein, in the first configuration, the first air stream directions are divergent. 
     
     
         3 . A system according to  claim 1  wherein each of the first air stream directions has a direction component towards the ceiling. 
     
     
         4 . A system according to  claim 1  wherein, in the second configuration, the second air stream directions are non-divergent. 
     
     
         5 . A system according to  claim 1  wherein the second air stream directions do not have direction components towards the ceiling. 
     
     
         6 . A method of operating a system according to  claim 1 , the method comprising at relatively high air flow, operating the system in the first configuration, and at relatively low air flow, operating the system in the second configuration. 
     
     
         7 . A system according to  claim 1 , wherein in the first configuration the supplied pair of air streams are directed upwards and to the side to create two distinct jets. 
     
     
         8 . A system according to  claim 7 , wherein the airstreams supplied in the first configuration are directed towards the ceiling in such a way that they spread out across the ceiling in a radial pattern, forming a radial wall jet. 
     
     
         9 . A system according to  claim 1 , wherein in the second configuration the supplied pair of air streams are directed straight ahead and horizontally and are close enough to be attracted to each other to merge into a single, circular wall jet.