FR2839735A1

FR2839735A1 - Accessory for smoke outlet comprises spoiler surface located in front of outlet frame corners and centered perpendicular to corner bisector

Info

Publication number: FR2839735A1
Application number: FR0206047A
Authority: FR
Inventors: Jacques Gandemer; Sophie Moreau; Stephane Sanquer; Zoltan Bendinelli; Daniel Frasca; Raoul Roth
Original assignee: ECODIS SA; Centre Scientifique et Technique du Batiment CSTB
Current assignee: ECODIS SA; Centre Scientifique et Technique du Batiment CSTB
Priority date: 2002-05-16
Filing date: 2002-05-16
Publication date: 2003-11-21
Anticipated expiration: 2022-05-16
Also published as: FR2839735B1

Abstract

The accessory consists of a spoiler surface (13) located in front of the corners of the outlet frame (3). This surface is centered and located perpendicular to the bisector (14) of the corresponding corner. Its length (Lsd) is of the order of half the hydraulic diameter of the opening (2) and its height is of the order of that of the frame. The upper edge of the deflector surface is located above the frame upper edge.

Description

de la portion convexe.of the convex portion.

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La presente invention concerne un accessoire pour exutoire de fumees, ameliorant les performances aerauliques de ce materiel utilise sur les couvertures de The present invention relates to an accessory for a smoke outlet, improving the aeraulic performance of this material used on the covers of

batiments de toutes sortes.buildings of all kinds.

Ces exutoires vent disposes de fa,con etanche sur une ouverture pratiquee dans la couverture du batiment. Ils vent constitues d'un cadre dormant, ou costiere, installe de facon etanche sur la couverture, et d'un vantail qui ferme l'ouverture, en forme de chapeau, et ce vantail est mobile par basculement ou soulevement; il peut These vent outlets are arranged in a sealed manner over a convenient opening in the roof of the building. They are made up of a sleeping frame, or curb, installed in a sealed manner on the cover, and of a leaf which closes the opening, hat-shaped, and this leaf is movable by tilting or lifting; he can

egalement se presenter sous la forme de lames basculantes. also be in the form of tilting blades.

Les performances aerauliques de ces exutoires vent relativement mediocres, en particulier lorsque le vent souffle et que l'exutoire presente un de ses angles au vent. En fait, la forme quadrangulaire du cadre favorise, au niveau des angles, la formation de vortex et ces vortex retombent dans l'ouverture en provoquant une sorte The air performance of these relatively poor wind outlets, especially when the wind is blowing and the outlet has one of its angles to the wind. In fact, the quadrangular shape of the frame promotes, at the angles, the formation of vortices and these vortices fall back into the opening causing a sort

de reduction de la section au niveau de la sortie des fumees. reduction of the section at the smoke outlet.

La presente invention propose des moyens qui permettent d'ameliorer les performances aerauliques de ce type d'exutoire, notamment lorsqu'ils vent en fonctionnement avec des conditions de vent qui, jusqu'a present, etaient The present invention provides means which make it possible to improve the aeraulic performance of this type of outlet, in particular when they are operating in wind conditions which, until now, were

particulierement defavorables.particularly unfavorable.

Ces perfectionnements apportes aux exutoires consistent en une adjonction au cadre dormant, d'un accessoire qui consiste en une surface deflectrice disposee en biais devant un angle audit cadre dormant, lequel cadre peut comporter un ou These improvements made to the outlets consist of an addition to the sleeping frame, of an accessory which consists of a deflecting surface disposed at an angle before an angle to said sleeping frame, which frame may include one or more

plusieurs accessoires.several accessories.

Toujours selon ['invention, la surface deflectrice est sensiblement perpendiculaire a la bissectrice de ['angle auquel elle est associee; sa longueur est de I'ordre de 0,5 fois le diametre hydraulique de l'ouverture delimitee par le cadre, et sa hauteur est du meme ordre que celle de ce dernier, son rebord superieur se situant au Still according to the invention, the deflecting surface is substantially perpendicular to the bisector of the angle at which it is associated; its length is about 0.5 times the hydraulic diameter of the opening defined by the frame, and its height is the same as that of the latter, its upper edge being located at

dessus du rebord audit cadre.above the edge of said frame.

L'invention concerne egalement l'exutoire de fumees comportant un cadre dormant muni de plusieurs surfaces deflectrices disposees chacune au niveau des angles. The invention also relates to the smoke outlet comprising a dormant frame provided with several deflecting surfaces each arranged at the corners.

L'invention sera encore detaillee a ['aide de la description suivante et des The invention will be further detailed with the aid of the following description and

dessins annexes, donnes a titre indicatif, dans lesquels: - la figure 1 represente un exutoire de fumees du type a vantail basculant equipe de deux accessoires selon ['invention; - la figure 2 est une vue de face de la figure 1, montrant la position des accessoires; annexed drawings, given as an indication, in which: - Figure 1 shows a smoke outlet of the tilting leaf type fitted with two accessories according to the invention; - Figure 2 is a front view of Figure 1, showing the position of the accessories;

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- la figure 3 represente un autre type d'exutoire, du type a vantail mobile par soulevement; - Figure 3 shows another type of outlet, of the type with leaf movable by lifting;

- la figure 4 represente une autre version d'exutoire du type a lames basculantes. - Figure 4 shows another version of the outlet type tilting blades.

Comme represente sur les figures, I'exutoire est positionne sur une couverture 1, au niveau d'une ouverture 2 pratiquee dans cette couverture et il comprend un cadre dormant 3 encore appele costiere, qui est fixe de fa,con etanche sur la couverture au As shown in the figures, the outlet is positioned on a cover 1, at the level of an opening 2 made in this cover and it comprises a sleeping frame 3 also called a curb, which is fixed in a sealed manner on the cover at

niveau de ladite ouverture 2.level of said opening 2.

L'obturation de l'ouverture 2 peut etre realisee comme represente figure 1 par un simple vantail 4 du type basculant, articule autour d'un axe 5 situe sur la paroi The opening 2 can be closed off as shown in FIG. 1 by a simple leaf 4 of the tilting type, articulated around an axis 5 located on the wall

arriere 6 du cadre 3.rear 6 of frame 3.

La figure 3 montre un autre type d'exutoire dont le vantail 7 est du type escamotable par soulevement au moyen d'un systeme de ciseaux 8 et la figure 4 FIG. 3 shows another type of outlet whose leaf 7 is of the retractable type by lifting by means of a scissor system 8 and FIG. 4

montre un autre type d'exutoire du type a lames basculantes 9. shows another type of outlet of the tilting blade type 9.

Le cadre dormant 3, comme represente figure 1, comprend une paroi 6 The sleeping frame 3, as shown in FIG. 1, comprises a wall 6

baptisee paroi arriere, une paroi frontale 10, et des parois laterales 11 et 12. called rear wall, a front wall 10, and side walls 11 and 12.

L'exutoire represente figures 1 et 2, comporte deux accessoires constitues de surfaces deflectrices 13 disposees au niveau des angles de la paroi frontale 10 du cadre 3. Ces surfaces deflectrices 13 se presentent sous la forme d'un panneau plan par exemple et elles vent disposees perpendiculairement a la bissectrice 14 de ['angle au niveau duquel elles vent disposees. Wiles vent centrees sur la bissectrice ou le plan The outlet represented in FIGS. 1 and 2 comprises two accessories made up of deflecting surfaces 13 arranged at the angles of the front wall 10 of the frame 3. These deflecting surfaces 13 are in the form of a flat panel for example and they wind arranged perpendicular to the bisector 14 at the angle at which they are arranged. Wiles wind centered on the bisector or the plane

bissecteur de ['angle correspondent. angle angle bisector.

La longueur Lsd de ces surfaces deflectrices 13 est de l'ordre de la moitie du diametre hydraulique de l'ouverture 2 du cadre 3 c'est-a-dire, approximativement, pour The length Lsd of these deflecting surfaces 13 is of the order of half the hydraulic diameter of the opening 2 of the frame 3, that is to say approximately for

un cadre carre, la moitie de la longueur Lc de la paroi frontale 10. a square frame, half the length Lc of the front wall 10.

La hauteur Hsd de la surface deflectrice 13, comme represente figure 2, est du meme ordre que la hauteur Hc du cadre dormant 3 et en particulier de sa paroi frontale 10. On remarque que ces surfaces deflectrices 13 vent decalees verticalement par rapport au cadre. L'arete superieure 15 de ces surfaces deflectrices 13 se situe au dessus de l'arete superieure 16 du cadre dormant 3 et en particulier de la paroi frontale 10. La distance entre l'arete superieure 15 et le dessus 16 du cadre dormant 3 etant The height Hsd of the deflecting surface 13, as shown in FIG. 2, is of the same order as the height Hc of the sleeping frame 3 and in particular of its front wall 10. It is noted that these deflecting surfaces 13 are offset vertically relative to the frame. The upper edge 15 of these deflecting surfaces 13 is located above the upper edge 16 of the sleeping frame 3 and in particular of the front wall 10. The distance between the upper edge 15 and the top 16 of the sleeping frame 3 being

choisie entre 0 et Hc.chosen between 0 and Hc.

Ces surfaces deflectrices 13 vent rapportees au niveau des angles du cadre 3 These deflecting surfaces 13 are reported at the angles of the frame 3

et fixees par tout moyen approprie.and fixed by any suitable means.

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La figure 3 montre la possibilite d'installer quatre surfaces deflectrices 13 au niveau d'un cadre dormant 3 pour un exutoire du type a vantail mobile par soulevement. On obtient ainsi, queue que soit la direction du vent, une meme efficacite des surfaces deflectrices 13 pour traiter les phenomenes de vortex au niveau des angles. La figure 4 montre, dans le cas d'un exutoire du type a lames basculantes 9, FIG. 3 shows the possibility of installing four deflector surfaces 13 at the level of a sleeping frame 3 for an outlet of the type with a leaf movable by lifting. We thus obtain, tail whatever the direction of the wind, the same efficiency of the deflecting surfaces 13 to treat the vortex phenomena at the angles. FIG. 4 shows, in the case of an outlet of the type with tilting blades 9,

I'installation de quatre surfaces deflectrices 13 au niveau des angles du cadre 3. The installation of four deflecting surfaces 13 at the corners of the frame 3.

Ces surfaces deflectrices vent installees comme precedemment a l'exterieur des angles, perpendiculaires a la bissectrice de ['angle correspondent, centre sur cette bissectrice ou plutot son plan bissecteur, de facon a creer une certaine symetrie de These deflecting surfaces are installed as above outside the angles, perpendicular to the bisector of the corresponding angle, centered on this bisector or rather its bisecting plane, so as to create a certain symmetry of

cette surface deflectrice au niveau desdits angles. this deflecting surface at said angles.

La fixation de ces surfaces deflectrices peut s'effectuer par exemple au moyen The fixing of these deflecting surfaces can be carried out for example by means of

de pastes rapportees sur le cadre, lesquelles pastes vent solidaires de ladite surface. pastes attached to the frame, which pastes wind integral with said surface.

Ces surfaces deflectrices constituent un accessoire adaptable sur les exutoires existants, ou accompagnant les exutoires a poser. Wiles peuvent etre installees These deflecting surfaces constitute an accessory adaptable to existing outlets, or accompanying the outlets to be installed. Wiles can be installed

d'origine sur les cadres dormants ou etre con,cues pour etre installees sur site. original on the frames or to be designed, designed to be installed on site.

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Claims

- CLAIMS

1.- Accessory for smoke outlet having a sleeping frame (3), or curb (2) delimiting the opening, characterized in that it consists of at least one

deflecting surface (13) arranged at an angle in front of the angles to said sleeping frame.

52.- Accessory for smoke outlet, according to claim 1, characterized in that the deflecting surface (13) is substantially perpendicular to the bisector (14)

from the angle at which it is associated.

3.- Accessory for smoke outlet according to claim 2, characterized in that the deflecting surface (13) is centered on the bisector (14) of ['angle at which

it is associated.

4.- Accessory for smoke outlet, according to any one of

Claims 1 to 3, characterized in that the length Lsd of the deflecting surface

(13) is of the order of 0.5 times the hydraulic diameter of the opening (2) delimited by the

sleeping frame (3).

155.- Accessory for outlet according to any one of claims 1 to 4,

characterized in that the deflecting surface (13) has a height of the same order as

that of the sleeping frame (3).

6.- Accessory for smoke outlet according to any one of the

Claims 1 to 5, characterized in that the deflecting surface (13) is positioned

relative to the sleeping frame (3) so that its upper edge (15) is located

above the edge (16) of said frame (3).

7.- Smoke outlet with a quadrangular frame (3), characterized by

that it includes deflecting surfaces according to any one of claims