Smoking room with the air renewed by a laminar flow

Abstract

A relaxation space, particularly a smoking room, of the type including elements for renewing the air which elements are provided with supply elements ( 8 ) and with suction elements ( 20 ), the renewing elements including holes distributed over the entire floor ( 13 ) and ceiling ( 9 ) of this space, characterized in that the holes at least in the floor ( 13 ) include at least two parts, namely a downstream part opening into the relaxation space and an upstream part larger in cross section than the downstream part, opening onto the other side of the floor ( 13 ).

1 . A relaxation space, particularly a smoking room, of the type comprising means of renewing the air ( 25 ), which means are provided with supply means ( 8 ) and suction means ( 20 ), said renewing means consisting of holes ( 16 ) distributed over the entire floor ( 13 ) and the ceiling ( 9 ) of this space, characterized in that the holes ( 16 ) at least in the floor ( 13 ) consist of at least two portions, namely a downstream portion ( 16   a ) opening into said relaxation space and an upstream portion ( 16   b ) larger in cross section than the downstream portion opening onto the other side of the floor ( 13 ). 
     
     
         2 . The relaxation space as claimed in  claim 1  characterized in that the outlet section of the downstream hole portion ( 16   a ) is of the order of one quarter the section of the upstream hole portion ( 16   b ). 
     
     
         3 . The relaxation space as claimed in  claim 1  characterized in that the holes are of circular cross section and the diameter (d 1 ) of the downstream holes ( 16   a ) is between 2 and 5 mm and preferably of the order of 3 mm. 
     
     
         4 . The relaxation space as claimed in  claim 1  characterized in that the diameter (d 2 ) of the upstream holes ( 16   b ) is between 8 and 20 mm and preferably of the order of 15 mm. 
     
     
         5 . The relaxation space as claimed in  claim 1  characterized in that the holes ( 16 ) consist of a downstream hole ( 16   a ), an upstream hole ( 16   b ), and an intermediate hole ( 16   c ). 
     
     
         6 . The relaxation space as claimed in  claim 5  characterized in that the diameter of the upstream holes is of the order of 12 mm and the diameter of the intermediate holes is of the order of 8 mm. 
     
     
         7 . The relaxation space as claimed in  claim 1  characterized in that the length (e 1 ) of the downstream holes ( 16   a ) is between 5 and 8 mm and is preferably equal to 6 mm. 
     
     
         8 . The relaxation space as claimed in  claim 1  characterized in that the length (e 3 ) of the upstream holes ( 16   b ) is between 20 and 60 mm and is preferably equal to 40 mm. 
     
     
         9 . The relaxation space as claimed in  claim 5  characterized in that the length (e 2 ) of the intermediate holes ( 16   c ) is between 5 and 15 mm and is preferably equal to 10 mm. 
     
     
         10 . The relaxation space as claimed in  claim 1  characterized in that the air supply means are active via the floor ( 7 ,  7   a ) of the premises and the suction means are active via the ceiling ( 5 ,  5   a ) thereof. 
     
     
         11 . The relaxation space as claimed in  claim 1  characterized in that it includes a raised floor ( 7   b ) and a suspended ceiling ( 5   a ) in which the holes ( 16 ) are pierced, the latter holes being distributed in regular manner over the whole thereof. 
     
     
         12 . The relaxation space as claimed in  claim 11  characterized in that the holes ( 16 ) are disposed in a quincunx arrangement. 
     
     
         13 . The relaxation space as claimed in  claim 1  characterized in that the density of distribution of the holes ( 16 ) is of the order of 3000/m 2 . 
     
     
         14 . The relaxation space as claimed in  claim 1  characterized in that the air is blown in through the floor ( 13 ) and drawn off through the ceiling ( 9 ). 
     
     
         15 . The relaxation space as claimed in  claim 1  characterized in that an upper buffer volume ( 11 ) is provided between the ceiling ( 9 ) and a suspended ceiling ( 5 ) into which the suction means ( 20 ) discharge. 
     
     
         16 . The relaxation space as claimed in  claim 1  characterized in that a lower buffer volume ( 15 ) is provided between the floor ( 13 ) and the ground ( 7 ) into which the air supply means ( 18 ) discharge. 
     
     
         17 . The relaxation space as claimed in  claim 1  characterized in that the air supply and suction means of the floor ( 13 ) consist of a one-piece double-flow ventilation unit ( 25 ), optionally provided with a heat recovery device, and air conditioning means. 
     
     
         18 . The relaxation space as claimed in  claim 1  characterized in that the flow of air is laminar. 
     
     
         19 . The relaxation space as claimed in  claim 1  characterized in that the air supply means ( 25 ) include temperature and relative humidity control means ( 31 ). 
     
     
         20 . The relaxation space as claimed in  claim 1  characterized in that the temperature and relative humidity control means ( 31 ) include means for their (remote) control, modification and maintenance. 
     
     
         21 . The relaxation space as claimed in  claim 1  characterized in that it constitutes a modular system capable of being combined with other modules of the same type. 
     
     
         22 . The relaxation space as claimed in  claim 21  characterized in that each module includes a structure comprising the ground ( 7 ) and a floor ( 13 ), a ceiling ( 5 ) and a suspended ceiling ( 9 ), and lateral walls ( 3 ), which may be of glass, provided with at least one opening ( 34 ), and a wall ( 35 ) delimiting a box ( 37 ) receiving all of the air treatment technical means. 
     
     
         23 . The relaxation space as claimed in  claim 1  characterized in that the supply and suction of air are effected via manifolds ( 15 ,  11 ) respectively connected to the blower means ( 8 ) and to the suction means ( 20 ). 
     
     
         24 . The relaxation space as claimed in  claim 1  characterized in that the flow rate (Q 2 ) of the suction means is greater than the flow rate (Q 1 ) of the blower means so as to create in the relaxation space a slightly reduced pressure compared to the exterior atmosphere. 
     
     
         25 . The relaxation space as claimed in  claim 1  characterized in that the base of the access door ( 34 ) is provided with means ( 39 ,  43 ) suitable for creating in front thereof a curtain formed by a flow of air at higher speed than the speed of the treatment air in said space. 
     
     
         26 . The relaxation space as claimed in  claim 25  characterized in that the means for creating the air curtain consist of a slot ( 39 ) that extends at least across the width of the door ( 34 ) and is fed by means ( 43 ) adapted to blow said flow of air on the opening thereof. 
     
     
         27 . A modular box ( 50 ) intended, by joining together a plurality thereof, to constitute a raised floor and/or a suspended ceiling of a relaxation space into which there is admitted a flow of air under pressure via holes ( 16 ) regularly distributed over the whole of the area of the floor and this flow of air is evacuated via holes ( 16 ) regularly distributed over the whole of the area of the ceiling, characterized in that the box ( 50 ) comprises a horizontal main face ( 52 ) pierced with said holes ( 16 ) and lateral faces ( 54 ) pierced with at least one communication orifice ( 56 ) of all of the boxes ( 50 ), air being admitted under pressure into the boxes ( 50 ) forming the floor ( 13 ) and drawn off via the boxes forming the ceiling ( 9 ). 
     
     
         28 . The modular box as claimed in  claim 27  characterized in that it includes means ( 55 ) for connecting it to the adjacent boxes ( 50 ). 
     
     
         29 . The modular box as claimed in  claim 28  characterized in that the holes ( 16 ) consist of at least two portions, namely a downstream portion ( 16   a ) discharging into said relaxation space and an upstream portion ( 16   b ) of greater section than the downstream portion discharging into the interior of the box. 
     
     
         30 . The modular box intended to constitute the floor ( 13 ) and/or the ceiling ( 9 ) of a relaxation space as claimed in  claim 1 .