FR2517354A1 - AERATORS - Google Patents

Abstract

THE INVENTION RELATED TO A VENTILATOR INTENDED TO BE ADAPTED TO A WINDOW BETWEEN A GLASS 52 AND THE FRAME FOR THIS GLASS. THIS AERATOR IS MADE OF ASSEMBLED EXTRUDED PROFILES, THE MAIN EXTRUDED PROFILES 1, 2 BEING CONNECTED TO ONE ANOTHER BY EXTRUDED SPACING OR INTERMEDIATE PROFILES 30, 32 OF WHICH ONE MADE AT LEAST PART OF THE CHENAL IN GLASS AND KEEP THE GLASS IN THE WINDOW IN RELATION TO THE AERATOR. THIS AERATOR IS INTENDED TO BE USED IN PREMISES EQUIPPED WITH WATERTIGHT WINDOWS OR DOUBLE WINDOWS.

Description

The present invention relates to aerators in particular, but

not exclusively,

  be used in rooms with windows

  and / or double-glazed windows, in which he is

  This type of aeration is currently often referred to as "secondary aeration" and has been realized, in recent years, by inserting it into a slot cut or cut in the frames of window and

  analogous structures of slit aerators described-and

  sold for example in the British Patent No. 4117751 of the Applicant which will be referred to below Although slit aerators of this type have been revealed

  satisfactory in their basic form for an application

  and for installation in door frames, windows or the like or even in the walls of premises, their mounting on window frames may cause some difficulties, either for a window manufacturer, or for an individual who

  wish to adapt such an aerator to an existing window

  aunt and this, simply by virtue of their depth and thickness and the fact that they must be maintained by the material of the chassis or frame

  in essence all around their periphery for example

  ple, from the point of view of the window manufacturer, when

  this type of slot aerator is adapted to the upper bar

  of a frame or a leaf, it requires a frame or leaf section wider than that which would otherwise be needed, which increases the cost of materials, for example wood In addition, the development of a slot to receive such a slot aerator is in itself essentially a shop work, which means that manufacturers must produce and retailers as well as window suppliers must store window frames with and without slot to cover

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all the sales needs.

  In view of these disadvantages, other forms of aerators have been developed with a view to

  mounted in an interval between the glass, normal

  at the top of the window, and the frame itself These aerators can be used

  for windows made of wood, metal or plastic

  tick / resin and have the advantage of being suitable for most windows without any special preparation

  and even to be able to adapt to an existing window

  te after removal of an appropriate glazed area.

  Aerators of this type are usually

  constructed by assembling several extruded profiles

  dice cut to match the width of

  window, the sections to be assembled rigidly

  to support a shutter or shutter device for opening or closing, usually by hand, of a pierced air passage

  between the profiles However, the windows are

  bricks in widely varying thicknesses (eg

  example for single and double windows) In general

  In addition, these aerators only fit a window of

  given width or width of the same Si

  we want to create a range of aerators that can

  adapt to a range of window widths, substantial changes are normally required

  drawings, tools, etc. to produce the products

  suitably modified yarns, which increases

  manufacturing and storage costs.

  Another difficulty that arises when,

  as is usually the case, the extruded profiles

  dies forming at least the inner and outer parts of aerators of this type are made of a metal such as aluminum, is due to the fact that the energy saving considerations, in particular for double as 17354 windows, are favorable to the realization of an aerator which presents a thermal interruption that is to say which does not involve a thermal path between the

  internal and external metal profiles good conduc-

  heat interruptions Thermal interruptions have

  were introduced in various ways into these aerators.

  Known examples are described in U.S. Patent No. 4,186,656 (Weber).

  Wassau) according to which poly-resin is cast.

  urethane in cavities of extruded aluminum elements

  minium, the polyurethane is allowed to set or hardened and appropriate sides are then removed by grinding.

  cavities, or in the European patent publication

  21164 (Franz Schneider) according to which we use

  reads an extruded plastic element complicated to space extruded metal elements forming

  the inner and outer profiles The two aerators

  described in the aforementioned patents are intended to be used with panes which have in substance a given thickness For a variation in window thickness greater than that which can be satisfactorily compensated by the simple application of

  layers of stuffing material or the like, of new

  extruded elements with major shape and size changes, made of metal and / or plastic, are necessary and

  substantial increases in tool costs-

  lage, general manufacturing and storage.

  The object of the invention is to provide an aerator

  comprising a set of extruded profiles which avoids or at least mitigates certain disadvantages of known aerators or all of them, including

  those described above More particularly

  but not exclusively, the object of the invention is to

  to allow the manufacture of a range of such aerators

  with or without thermal interruptions and

  designed to be used with several thicknesses of

  windows using intermediate profiles or spacers

  simple construction which can be

  in a variety of dimensions at low cost, so that each aerator of the range uses one or more profiles in standard substance,

  preferably those whose design is the most

  plicated, and one or more different spacing profiles

  selected from among several of these profiles to compensate for differences in the thickness of the glass of

  to reduce the cost of tools,

  storage and storage The invention still

  intended to provide such an aerator

  extruded yarn able to form a thermal break

  that, at the same time, to perform structural functions

  The invention also aims to produce an aerator acceptable from the point of view

  as well as for consumers in particular

  particularly as regards its cost.

  It should be noted that in the description

  preceding and in the following, the profiles of

  the aerator are, unless the text specifies the

  milky, oblong and of a length

  this the dimensions of the window to which the aerator

must be adapted.

  According to the invention, an aerator for a window or other glazed panel comprises inner and outer profiles (as defined) made of thermally conductive material assembled to each other by a first intermediate profile substantially non-thermally conductive which is at least a part a channel

  window and holds the glass or other material

  glazing of the window or panel in this

yarn.

i? 3 S

  By the term "profile" used in the preface

  Memory means elements which, when assembled, possibly together with other elements, form a complete aerator. Unless the text specifies otherwise, these sections are long and are

  obtained, for example, by extrusion of

  quasui, one or more of these profiles being possible-

  otherwise processed or otherwise treated to

  sea, for example, passages for air, connecting means for the shutter or the masking piece and end closure elements of the aerator in

his outfit.

  The inner profile is preferably the one that, in most cases, is housed in the space

  living space of the premises or in other areas in the-

  which the aerator can be used and, in its preferred form, carries or contains shutter means

  or flap to open or close the aerator.

  These means preferably comprise a long slit support element and a long facing strip-mounted by parallel movement rods spaced on

  the support element so that a longitudinal movement

  of the facing strip also produces a displacement bringing it closer to the supporting element parallel to it between a position

  completely closed closing the slot (s) of the

  support element and a fully open position.

  This arrangement may be as described in British Patent No. 1,417,751 or in US Pat.

  Norwegian patent of the Applicant No. 141 351.

  The outer profile preferably comprises

  a cap or a hood constructed and arranged in a substantial

  in order to prevent gusts of rain or

  equivalent to entering the aerator from the outside.

  The outer profile is preferably free of any

  direct connection to shutter or shutter.

  The inner and outer profiles are preferably provided with long wings delimiting, on the aerator, a long tongue whose outer dimensions are substantially equivalent, either to the internal dimensions of the U channel window, or, preferably, to The thickness of the window intended to be received in this U-shaped channel. The tongue thus formed is also preferably parallel to the U-shaped channel.

  window and / or located in the same plane as this one.

  In a particularly preferred embodiment, the tongue may have substantially the thickness of the window pane, the U-channel window being, for example, thicker by about 6 mm, the difference being due to the

  presence of gaskets, for example corner joints

  cement, so that the tongue can be attached to the window frame in a manner equivalent to that used to secure the window or glass itself

  to the window frame if the aerator was not

  wedged The wings forming part of the internal profiles

  outside and thus forming the tongue are themselves

  even preferably connected by a second section

  termédiaire. The inner and outer profiles can

  be made of metal or a thermally conductive material

  blable, for example it may be extruded aluminum profiles, and the first intermediate profile and the second intermediate profile possible may

  be made of a plastic material or a similar material

  low thermal conductivity When the first

  first and second intermediate profile are present and

  are made of such material, the aerator may

  a thermal interruption in spite of the

  thermal efficiency of the inner and outer profiles themselves.

  In the specially preferred embodiment

  1 t 354 of the invention, wherein the first and the second profile

  intermediate are present, these profiles are preferably

  are precisely matched to each other to ensure the aforementioned thickness and co-abortion equivalence of the tongue and the window To receive windows

  of different thicknesses, the first and second

  the intermediate can be manufactured in several

  mensions, so that the choice of intermediate profiles

  suitable areas allows the construction of aerators from standard exterior interior profiles for adaptation to various window thicknesses. It is therefore possible to provide a mounting kit from

  which an aerator according to the invention can be built.

  The first intermediate profile may be of substantially U-shaped section or substantially L-shaped section and in this case the rest of the U-shaped channel

  window can be formed by the inner profile.

  In a particular embodiment

  preferred, the first intermediate profile is a

  substantially L-shaped spun and has a flexible gasket attached thereto and which is arranged to contact the surface of the pane for sealing purposes. The same effect can be obtained using

  a plastic material of double hardness, the body of the

  spun yarn being made of a plastics material retaining its shape and the gasket being made of a plastics material

  flexible or more flexible marrying the body.

  The assembled aerator is preferably provided with a lattice for preventing the entry of insects and other solids, this lattice being preferably placed

  between the outer profile and the first inter-

  The first intermediate profile is provided with a long fixing channel for this purpose. In this embodiment, the connection between the first intermediate section and the outer section is indirect, but this arrangement can not be used.

  nevertheless falls within the scope of the invention.

  It is desirable to provide in the aerator con-

  form to the invention a cavity of calm air and, for this purpose, a

  long movable blade can be placed inside

  the aerator and, while the aerator itself is

  in its position of closure, this blade comes into

  In the preferred embodiment of the invention, the blade, which can also be considered as a secondary flap, is attached to the second one. intermediate profile so that

  the blade or at least a substantial part of its

  face can rotate around the fixed edge The blade can

  be made of plastic with a zone of thickness

  near its fixation area to ensure its

  placement or in fact it may be a qualifying

  often referred to as a "double hardness plastic" element, that is to say an element made essentially of two sections forming an integral part of each other,

  soft flexible section close to its attachment region and a sec-

  harder stiffness forming the main body of the blade.

  The blade is preferably recalled elastically

  for example by its own flexibility or its plastic memory, to a position in which it prevents air from passing through the aerator, the opening

  of the main aerator in its internal profile

  preferably move the blade to a position of

  opening to allow passage to the air When the aerator includes the system mentioned above including the element

  the facing strip and the connecting rods

  parallel, at least one of the links may

  be provided with an extension beyond its point of

  statically, constructed and arranged to allow the blade to resume its closed position when the facing strip is in the closed position and to push the blade in the open position against its resilient bias when

  the facing strip is in the open position.

  In the embodiments of the invention in which the second intermediate profile is not present, a blade or a secondary flap may nonetheless be provided and is then attached directly

  inside or outside profile.

  In all forms of performance in which

  a blade is provided, its stopping position, that is to say its position

  completely closed, is preferably defined by a wing

  inner profile of the aerator.

  Due to the construction of the aerator con-

  form of the invention which is of elongated shape, it

  just noted that the profiles from which it is assembled and which are preferably extruded profiles

  can be cut to any length required.

  these end are however preferably provided to close the ends of the aerator to avoid

  air inlets as well as for aesthetic reasons.

  The end pieces should preferably be designed

  in order to maintain the thermal interruption on all

  In addition, in a preferred embodiment of the aerator according to the invention, the end pieces comprise inner plates.

  and spaced apart to be fixed respectively

  the inner and outer sections of the aerator body,

  the inner and outer plates containing a material

  (for example a neoprene foam) which fills

  in substance the space separating them.

  re preferably extends slightly (for example on 1 or

  2 millimeters) beyond the inner and outer plates

  in order to allow the formation of a joint

  weathertight pressure with aerator profiles and / or window frame and window The fastening of the abutment parts to the aerator profiles by screws or similar means can guarantee a seal

  effective compression seal.

  The assembly of the various sections forming the

  The finished channel can be made by sliding or elastic interlocking, with the aid of a sealing / adhesive material. The U-channel with window pane formed by the first intermediate profile or the first intermediate profile and the inner profile. the aerator may further be provided with a rubber lining material or the like intended to come into contact with the window or the window itself or to be directly attached thereto Where a first intermediate profile is used, a known type of wedging or wedging joint-may be provided between the

  window and the profile (inside or outside) - to

  stituerl'other wall channel U channel window.

  According to another aspect of the invention, a

  mounting kit for forming an aerator as de-

  finished higher respectively comprises an integrated profile

  an external profile and at least one internal profile

  The intermediate profile is preferably

  this one of several intermediate profiles to provide the assembled aerator a channel-U-shaped window

of desired thickness.

  According to yet another aspect of the invention, to construct an aerator as defined above, a first intermediate section is selected from

  several of these profiles and attaches an integrated profile

  and an outer profile (as defined above) to form a U-channel window with the desired thickness. The various aspects of the invention can be realized in various ways and certain specific embodiments will be described hereinafter, by way of example, with reference to the accompanying drawings.

23 17354

  in which: Fig 1 is a view partly in section of an aerator according to the invention; Figs. 2A and 2B are cross-sectional views of another aerator according to the invention mounted respectively on a polyvinyl chloride or aluminum window (A) and on a wooden window (B). ); and

  Figs. 3A and 3B are sectional views of equi-

  valences of yet another aerator according to the invention.

tion.

  FIG. 1 illustrates an aerator comprising an inner profile 1 and an outer profile 2, both extruded in aluminum and extending over the entire length of the aerator. The profiles 1 and 2 form what can be considered as the body

main aerator.

  The profile 1 which is intended in use to be disposed as facing facing the interior of the room which includes the window to which the aerator is adapted, has a slot cut or otherwise arranged in its

  inner side, the upper and inner longitudinal edges

  below this slot being indicated in 3

  of the slot (not shown) terminate at a short distance from the ends of the extruded section 1

  itself in order to confer rigidity and delimitation

  an air passage that can be effectively closed.

  m, the closure means comprising a flap 4 which itself comprises a facing strip 5 and a flange 6 The facing strip has a width and a length such that it completely closes the slot of the inner profile 1, a means of sealing 8 of rubber or similar material being provided on the inner surface of the facing strip 5 to improve the closing of the slot The wing 6 has a length such that it can be fully received in the slot of the profile

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  inside 1, both when the slot is open

  that it is closed and on the wing 6 are mounted rods with parallel movements, one of which is indicated below. The mechanical linkage 10 is connected to the wing 6 by means of a pivot 12 and is fixed equally.

  by means of a pivot 13 to the profile

  1 between its wings 15 and 16.

  It should therefore be noted that a longitudinal displacement of the flap 4, in the plane of the paper in the drawing, forces the flap 4 itself to move on the parallel rods 10 away from the inner section I to the position shown in phantom interrupted in 4 B, as a result of which air can bypass the edges of the flap 4 and penetrate

  inside the aerator through the slit of the pro-

inner spun 1.

  According to this feature of the aerator according to the invention, the construction of the profile

  Internal Control 1, Stream 4 and their international links

  is substantially the same as described in the

  English and Norwegian patents of the Application

ress.

  The outer profile 2 has the shape of a lon-

  hat or a long hood designed to protect the in-

  the aerator against gusts of rain or similar weather and is provided at its upper edge

* a wing that in turn has two inde-

  pendants 22 facing the interior of the aerator.

  The inner profile 1 of the aerator also has a wing at its upper edge indicated at 21, the wings and 21 being essentially parallel in an assembled aerator according to the invention.

  new suspension ribs 23 oriented in

  towards the inside of the aerator, the ribs 22

  and 23 being turned essentially one to the other

  251 f 35. An intermediate profile 30 is placed in

  the aerator assembled between wings 20 and 21 of

  outer and inner yarns 2 and 1 respectively and is constructed and arranged to cooperate with the ribs 22 and 23 to lock to each other the

  internal and external profiles 1 and 2 and for

  hold in place relative to each other The wings

  and 21 and the profile 30 thus form a long lan-

  whose thickness is governed by the shape and

dimension of the profile 30 used.

  The aerator is also provided with a profile

  intermediate 32 which is attached to the inner profile 1 to

  the level of its flange 15, the section 32 presenting a

  mounting bracket 36 for holding an edge in place

  lattice 40 whose other longitudinal longitudinal edge

  lela is engaged in a channel 38 provided on the outer section 2 When the profile 32 is attached to the wing and, through the mesh 40, to the outer profile 2, the inner and outer sections 1 and 2, the intermediate profiles 30 and 32 and the lattice constitute a substantially rigid entity forming,

  between the profile 32 and the inner profile 1, a

  U-shaped channel with window The U-shaped channel with window is furnished with

  rubber or the like 50.

  Intermediate profiles 30 and 32 are

  shaped and dimensioned in such a way that

  thickness of substantially equivalent thickness to that of the glazing panel, the wings 20 and 21 being substantially co-planar with the surfaces of the panel when it is placed in the U-channel

  with intercalation of a suitable packing material

  The tongue is therefore in fact a

  extension of the glazing panel placed in its channel.

  The aerator is also equipped with a sec-

2nd 1354

  or a blade 60 which, in the drawing, is

  in its closed position in which its lower edge is in contact with the distal edge of the flange 15 of the inner profile 1 The blade 60 is made of a double-hard plastic material, the shaped upper portion which is attached to the profile 30 being of medium resilient consistency of the rubber type and is shaped in such a way that a preload is created when it is in place to bias the blade toward its closed position shown, while its planar portion great forming his body is made of a material

  harder but elastic to keep its shape.

  The rod 10 is provided with an lug 11 by means of which the shutter 4 closed against the inner profile 1 allows the blade 60 to occupy the position shown in which it prevents the cold air from reaching the flap 4 and so When the flap 4 is moved longitudinally on its links 10, the lugs 11 bear against the blade 60 and raise it in the position indicated in broken lines at B to allow the air to pass freely to

through the aerator.

  The rods 10 are preferably made of DELRIN (registered trademark) or an equivalent rigid elastic plastic material while the profiles and 32 are preferably of a material

  plastic such as polyvinyl chloride

  having a low thermal conductivity which forms an effective thermal break between the parts of the aerator exposed respectively to the local and the

external movements.

  Mounting the aerator-on-a window requires the fitting of a rectangular gap

251? 354 between the glazing panel 52 and the window frame itself,

  the aerator being mounted in such a way that

  its U-shaped window channel fits on the glass (eg

  pl in 52) and is sealed therein and that the tongue formed by the wings 20 and 21 fits into

  the chassis where the window itself

  even if its dimensions had not been reduced, would normally be fixed The assembly of the aerator

  according to the invention therefore leads to a

  of the window surface, but this reduction is relatively small and seems to be acceptable for

commerce and the public.

  The reference 65 generally denotes an end termination element for the fan ensuring an effective extension of the glass to the vertical glazing rebate of the window frame itself. The profiles 1 and 2 of the aerator are further provided with end plates 67 and 68 providing complete closure of the air chamber of the aerator. The end pieces shown at 65 comprise the 67/68 plates and a closed-cell neoprene spacer material. rubber indicated at 66 to allow a fixation with compression to the body of the aerator, the window frame and / or the glazing panel and obtaining a weathertight seal For this purpose, the material is allowed to 66 to extend for example by 1 or 2 mm,

  beyond the desired edge (s) of the plates-67/68.

  The abutments 65 can be attached via plates 67 and 68 to the main body

  the aerator via the fixing points

36, 38, 46 and 48.

  When the window 52 to be used in the window

  with the aerator described above has a relative thickness greater or less than that shown,

251,354

  the channel U can be modified to receive it by means of an insertion profile 32 comprising a wing 33 of a greater or lesser transverse dimension (transverse means perpendicular to the plane of the window) and a Although inserting pro- grams 30 and 32 and end pieces 65 into several standard dimensions, the construction of an equivalent construction, but of greater or lesser width, can be envisaged.

  range of aerators that can be adapted to

  very different thicknesses but using profiles 1 and 2, a lattice 40 and a blade 60 of sttandard shapes The invention thus provides a -economy

  considerable manufacturing and storage while still

  a large number of applications, the aerator also offering the advantage of increased thermal interruption

  consistent with the increase in the thickness of the

be.

  Figures 2 and 3 are sectional views of

  rators corresponding in the aggregate to that

  shown in Fig 1 but mounted on windows, in

  especially on windows made of aluminum or poly-

  (vinyl chloride) in drawings 'A' and on wooden windows in drawings 'B' In both cases, the figures used for the various elements

  aerators shown in Figs 2 and 3 corre-

  lie to those used with reference to FIG.

  Fig 2 illustrates an aerator constructed and adapted to a double pane in substance as in Fig 1

  except that slightly different joints are used

  The intermediate profile 32 has a joint made of a softer material 233 which

  attached thereto or forming an integral part of it by

  The seal material 233 is in sealing contact with the glass surface. In addition, a wedge seal 250 is placed on the opposite face of the window 52 in a known manner.

  illustrate an aerator with

  interiors 1 and a modified outer profile 302.

  The wing 320 of the outer profile 302 has ribs which fit directly into the ribs 23 of the inner profile 1. Another insertion profile 332 having a shorter lateral wing connects the first and the second section (via the lattice 40) to form a U-shaped henal for a single pane 352 The seals 233 and 250 described

  above with reference to Fig 2 are retained.

  It should be noted that, in this form of aerator, the direct connection of the wings 20 and 21 means that

  the aerator does not present a thermal interruption.

  In addition, for example, the blade 60 has been removed in the aerator shown in FIG. 3 This being the case, the presence of an intermediate profile, the first intermediate profile 332 acting as an element

  linking structure, heat interruption means

  and positioning of the glass, -pro-

  has a greatly simplified form of aerator which

  simple modifications, can be adapted

  ter, 'to a variety of thickness of panes.

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Claims (14)

R E V E N D I C A T IO N S   1 Ventilator for a window or other glazing, characterized in that it comprises an inner profile and an outer profile (defined above) in thermally conductive material structurally connected   to each other by means of a first inter-   non-thermally conductive substance which is at least part of a U-shaped channel with glass and which holds glass or other material in place glazing of the window.   2 aerator according to claim 1,   characterized in that the inner and outer sections   have long wings defining a long   which the outer dimensions and those of the window pane maintained in the U-channel are substantially equivalent and coplanar.   3 aerator according to claim 2,   characterized in that wings are connected by a second intermediate profile.   4 aerator according to claim 4,   characterized in that the second intermediate profile   is made of a substance that is not substantially thermally conductive   trice. Aerator according to any one of   preceding claims, characterized in that the   inner profile and outer profile are made of a metallic material and the intermediate profile   or each of them is made of a plastic material.   6 Aerator according to any one of   preceding claims, characterized in that the   first intermediate profile is of a trans-   Substantially U-shaped. 7 Aerator according to any one of   Claims 1 to 5, characterized in that the first   intermediate profile is of a cross section RS i? 354 in substance in L. 8 Aerator according to claim 7, characterized in that the remainder of the U channel to   glass is formed by the inner profile.   9 Aerator according to any one of   Claims 5 to 8, characterized in that the first   intermediate profile is made of a double-hard plastic material, the softer material having no   structural function and simply serving as a seal.   10 Aerator according to any one of   preceding claims, characterized in that   long trellis is placed between the outer profile and the first intermediate profile.   11 Aerator according to any one of   Claims 3 to 10, characterized in that it contains   a long movable blade attached to the second intermediate section   diary. 12 aerator according to claim 11, characterized in that the blade is made of a plastic material of double hardness, the material softer   forming a flexible hinge for the blade.   13 Fan according to any one   of the preceding claims, characterized in that   the inner profile comprises a long support element   slit and a long strip of siding mounted on the   support rods with parallel movement spaced apart so that a longitudinal displacement   of the facing tape also produces a   of the strip which brings it closer to or away from the support element parallel thereto between a fully closed position in which it obstructs the slot or slots of the support element and a position completely open.   An aerator according to claim 13 as claimed in claim 12, characterized in that   that, once they have been   lonoernent constructed and arranged to allow the blade to occupy its closed position when   the facing tape is in the iron position   and push the blade towards an open position when the facing tape is in its opening position.   Aerator according to any one of   preceding claims, characterized in that   end pieces are attached to the profiles at the distal ends thereof and include each of the inner and outer plates and the cellular material therebetween. Ventilator according to Claim 15, characterized in that the cellular material extends beyond the inner and outer plates to form a compression seal with the sealing profiles.   aerator when attached.   Aerator according to claim 15 or 16, characterized in that the cellular material is a neoprene foam.   18 Mounting kit to form an aerator   according to any preceding claim   tes, characterized in that it comprises respectively an inner profile and an outer profile and at least one an intermediate profile.   19 mounting kit according to claim 18 characterized in that the intermediate profile or   each of them is chosen from among several inter-   to provide the assembled aerator with a channel in U to glass of the desired thickness.   Mounting kit according to claim 18, characterized in that it comprises two intermediate sections, the first intermediate profile and the second intermediate profile.   21 Method of constructing an aerator   according to any one of claims 1 to 17,   characterized in that a first intermediate profile is selected from among several of these profiles and an inner section and an outer section (defined above) are connected to this first intermediate section to form a U-channel with a window of the desired thickness. 22 construction method according to claim 21, characterized in that a second intermediate profile is selected from among several of these profiles and is connected an inner profile and a   outer profile (defined above) to this second   intermediate yarn to form an aerator comprising   a U-channel with a window of the desired width and a channel   whose outer dimensions match to the desired thickness.