EP0421841A1 - Einrichtung zur Luftführung und Anlage, die eine derartige Einrichtung enthält - Google Patents

Einrichtung zur Luftführung und Anlage, die eine derartige Einrichtung enthält Download PDF

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Publication number
EP0421841A1
EP0421841A1 EP90402649A EP90402649A EP0421841A1 EP 0421841 A1 EP0421841 A1 EP 0421841A1 EP 90402649 A EP90402649 A EP 90402649A EP 90402649 A EP90402649 A EP 90402649A EP 0421841 A1 EP0421841 A1 EP 0421841A1
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EP
European Patent Office
Prior art keywords
air
pieces
mouth
passage
equivalent
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP90402649A
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English (en)
French (fr)
Inventor
André Amphoux
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0421841A1 publication Critical patent/EP0421841A1/de
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00—Ventilation
    • F24F7/02—Roof ventilation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/02—Ducting arrangements
    • F24F13/06—Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser

Definitions

  • the invention relates to a device for the passage of air with anti-backflow system and, also, an installation comprising such a device.
  • a known device is intended to be mounted on a carpentry of the building and it comprises on the external face and / or the internal face of the carpentry, at the level of an opening formed therein, a grid and possibly a deflector.
  • the device has, in elevation, a generally rectangular shape which is strongly flattened, which allows mounting on a window frame.
  • systems based on sliding shutters have been proposed, or based on flexible blades, with low inertia, or based on non-return valves.
  • the invention aims to remedy these drawbacks and therefore its main object is a device for the passage of air, with anti-backflow system, as well as an installation comprising such a device which has a minimum pressure drop in the direction desired air flow combined with excellent prevention of unwanted air flow.
  • this device (or more) can (or can) be combined (s) with an air extractor such as that of the type intended to be mounted on a building roof at the top of a through duct, at its lower part in the building.
  • an air extractor such as that of the type intended to be mounted on a building roof at the top of a through duct, at its lower part in the building.
  • the invention relates to a device 1 for the air passage A, with anti-backflow system 2 incorporated.
  • a device 1 is intended to be mounted in an opening 3 of a wall 4 of a building 5 for the purpose of ventilating the room 6 in which this opening 3 is located and where therefore the device 1 opens.
  • the wall 4 is, in the preferred embodiment envisaged, an external vertical wall, that is to say separating the interior I from the exterior E of the building 5.
  • the opening 3 is formed in a frame of window 7 and it is placed rather in the upper part of the part 6.
  • the device is rather arranged so as to allow the passage of air A from the outside E towards the inside I and, thanks to the anti-backflow system, to prevent the passage of air A from the inside I towards the outside E.
  • the device 1 can then be qualified as a non-backing air inlet.
  • the device according to the invention can be the subject of other implementations for ventilation or not, of building or not, and, more generally, in circumstances where an air passage in only one specific direction is desired.
  • the device 1 is now described in more detail with reference on the one hand to the case where it is mounted and, on the other hand for the air intake for building application, mentioned previously.
  • the qualifiers used such as “high”, “low”, “upper”, “lower” should be understood in this context.
  • the device 1 can be presented for sale disassembled or in separate parts.
  • the device 1 is of the type comprising two air passage vents 8, 9, spaced transversely from one another, arranged to be in communication with one another by means of a tunnel 10 for circulation of 'air.
  • a bent air deflector 11 is intended to be rigidly associated, by one of its ends 12, with one of the two mouths -the anti-backflow mouth 8- and defines, at its other end 13 a passage opening air 14.
  • the device once mounted in the opening 3 is such that the two mouths 8, 9 are placed in two substantially vertical planes, the air passage opening 14 placed in a substantially horizontal plane located at a level higher than that of the anti-refouling mouth 8, the anti-refouling system 2 being placed in the bent space 15 defined by the deflector 11.
  • the mouth 8 can be qualified as anti-repressor because the anti-repressor system is placed near it, the other mouth, is the mouth 9, can be qualified as an inlet mouth insofar as, given the desired direction of passage of air A, air A first meets mouth 9 before mouth 8.
  • the qualifiers "anti-backflow” or "air intake” applied to the vents 8, 9 essentially aim to identify the vents relative to each other.
  • the two mouths 8, 9 are either placed facing each other, as shown in the figures, or offset relative to each other in the vertical and / or horizontal direction, this variant not being shown, such a structure being in known in the case of air inlets for buildings.
  • the tunnel 10 is essentially constituted by the opening 3 formed in the wall 4 which has a certain thickness corresponding to the spacing between the two mouths 8, 9.
  • This tunnel 10 is either delimited by the faces of the wall 4 resulting from the opening 3, faces arranged accordingly, is materialized by a sleeve-shaped part (not shown) connecting the two mouths 8, 9, the deflector 11 and a possible second deflector 16.
  • This second variant has the characteristic that the device 1 then forms a unitary monobloc assembly and not two distinct assemblies as in the first variant.
  • the vents 8, 9 have, in elevation, a generally rectangular shape that is strongly flattened, that is to say much longer than it is wide. And, in this case the mouths 8, 9 are placed and arranged so that their length extends horizontally and their width vertically.
  • the horizontal length can reach of the order of 50 cm and the vertical width can be of the order of a few centimeters (for example of the order of 5 cm).
  • the deflector 11 substantially forms an elbow at approximately 90 °, its two ends in the form of an opening (respectively defined by the mouth 8 and the passage 14) being substantially perpendicular to each other. other.
  • the device 1 further comprises and in combination on the one hand a stop grid or equivalent 17 intended to be fixed in the anti-backflow mouth 8 and, on the other hand, a plurality of pieces 18 such as balls or equivalent, intended to be placed in the bent space 15.
  • the pieces 18, balls or equivalent are made of a material, of dimensions, weight, shape and quantity suitable so that, the device 1 once assembled, the pieces 18 accumulate on each other and rest on the stop grid 17 and the internal face of the deflector 11, the pieces 18 thus arranged, having the functions on the one hand of not substantially obstructing the passage of air A in the desired direction of passage going from the anti-refouling mouth 8 to the passage opening 14, since the pieces 18 are then urged by the moving air A to move away from each other as well as from the grid 17 and the deflector 11 and, on the other hand, to substantially obstruct the passage of air A in the unwanted direction of passage going from the passage opening 14 to the mouth a nti-refoulante 8, since the pieces 18 are then urged by the moving air A, against each other, against the grid 17 and the deflector 11, which has the effect of thus constituting a device 1 for the air passage with anti-backflow system 2 having a low pressure drop in this direction of the desired air passage.
  • the grid 17 is a true grid in the usual sense, or a grid, or a trellis or a net or one or more rods or bars parallel in one or more directions (in particular horizontal and vertical). It may be a rigid member or having a certain flexibility. In all cases this grid or equivalent 17 has the function of not allowing the passage through pieces 18, of absorbing the bearing force of pieces 18 on itself and, finally, of allowing only the air passage A.
  • the designation "grid" used in the text covers all possible variants fulfilling this function.
  • pieces 18 is meant parts of a compact solid material having a certain volume, in contrast to non-solid materials, to powder, to a thread-like or flattened material in a strip. But, of course, the pieces 18 can be produced with, as the raw material of the powder, a threadlike or strip material treated accordingly to present, finally, a certain volume.
  • FIG. 6 The unwanted direction of passage is shown in FIG. 6 in which it can be seen that the pieces 18 are biased in the general direction of tightening or compaction to prevent or hinder the passage of air in this case from the interior I towards outside E.
  • the deflector 11 has, in cross section, a generally convergent or funnel shape the large opening of which is the passage opening 14 and the small opening of which is the anti-backflow opening 8.
  • the cross section is understood to mean a substantially perpendicular section to the direction of passage of air A from the mouth 8 to the opening 14.
  • the deflector 11 comprises a first substantially flat wall 19, intended to be placed substantially in the plane of the anti-pressure outlet mouth 8; a second curved wall 20 with a concavity facing the first wall 19, spaced from the latter; and two side cheeks 21 parallel and spaced transversely from each other, substantially perpendicular to the first wall 19, connecting the latter with the second wall 20.
  • the first wall 19 may include a cutout 22 defining the anti-backflow mouth 8 It can also extend beyond the anti-backflow mouth 8 or the cutout 22 to form a flange 23 for fixing or supporting the device 1 to the wall 4 with which it must be associated.
  • the second wall 20 may comprise a first upper section 24 substantially parallel to the first wall 19, adjoining the air passage opening 14 and a second lower section 25 adjoining the anti-backflow opening 8, the main main plane of which is inclined on that of the first section 24.
  • this mean main plane is inclined on the plane of the first section 24 with an angle of the order of 30 ° to 60 °, in particular equal to or close to 45 °.
  • the second section 25 is substantially planar. In another variant, it is curved with a concavity turned towards the first wall 19. The lower end free end portion 26 of the second section 25 is curved and turned towards the anti-backflow mouth 8.
  • the area of the air passage opening 14 is at least equal to that of the anti-backflow opening 8.
  • the area of the air passage opening air 14 is of the order of 1.5 to 3 times that of the anti-pressure outlet 8, in particular of the order of 2 times.
  • the device 1 also comprises a stop grid or equivalent fixed in or in the vicinity of the air passage opening 14, in order to prevent the untimely exit of the pieces 18, balls or equivalent from the internal space 15.
  • the remarks made concerning the grid 17 are also applicable to the grid 27.
  • the combination of the two grids at the two ends 12, 13 of the deflector 11 whose walls 19, 20, 21 are full has the consequence that the pieces 18 are enclosed in the space 15 without being able to escape but being able to move therein when subjected to a sufficient external force.
  • the device 1 according to the invention may further comprise combined means 28 for adjusting the air flow.
  • these adjustment means 28 are constituted by a member capable of adjusting the volume of the space 15a in which the pieces 18, balls or equivalent are located.
  • the member 28 for adjusting the volume of the space 15a in which the pieces 18, balls or the like are located is a grid placed in the bent space 15 defined by the deflector 11 by separating it into two subspaces in communication through this grid 28, namely a lower subspace 15a where the anti-backflow mouth 8 is located as well as the pieces 18, balls or equivalent and an upper subspace 15b.
  • the grid 28 is mounted movable but lockable in position so as to allow the lower subspace 15a to be increased or decreased.
  • the grid of the adjusting member 28 is deformable, rigidly fixed on its lower edge 29 to the first wall 19 in the vicinity of the anti-backflow mouth 8 and its upper edge 30 is mounted to slide transversely, with locking in or in the vicinity of the air passage 14.
  • the adjustment member is deformable and has on its upper edge 30 a hook turned downwards which can cooperate with the bars arranged in parallel constituting the grid 27.
  • a zipper or equivalent 31 fixed to the grid in the vicinity of the hook makes it possible to engage or disengage the hook from the grid 27.
  • the grid 27 is itself removable, for example is fixed by its rear edge 32 to the first wall 19 and its front edge 33 is arranged to rest on support plates of the deflector 11 while being able to be moved away from it.
  • the pieces 18, balls or the like partially fill and can be moved the space or subspace 15a in which they are located under the effect of a sufficient external force.
  • the pieces 18, balls or equivalent fill on the order of one third to two-thirds of the space or subspace 15a in which they are located.
  • the pieces 18, balls or the like have a large developed external surface and a low weight.
  • the pieces 18 are balls with a diameter of the order of 2 to 8 millimeters made of light plastic material such as expanded polystyrene or polyurethane or any other equivalent substance classified as fire or not and this in the case of '' an air vent with a space requirement of the order of 40cm long (horizontally) by 4cm wide (vertically).
  • the balls are rigid or, optionally, are elastically compressible, for example being made of deformable plastic foam.
  • the pieces 18 have a pyramidal shape or else a shape of a torus or even a shape of a disc having a certain twist or even a general cylindrical shape, or even a shape of a star.
  • the device 1 may also include a second bent deflector 16, intended to be rigidly associated, by one of its ends 34, with the other of the two mouths - or inlet mouth 9 -, defining, at its other end 35 an air inlet 36, so that the device 1 once mounted in the opening 3 of the wall 4, the air inlet 36 is placed in a substantially horizontal plane located at a lower level than that of the inlet 9.
  • a second bent deflector 16 intended to be rigidly associated, by one of its ends 34, with the other of the two mouths - or inlet mouth 9 -, defining, at its other end 35 an air inlet 36, so that the device 1 once mounted in the opening 3 of the wall 4, the air inlet 36 is placed in a substantially horizontal plane located at a lower level than that of the inlet 9.
  • the invention also relates to a ventilation installation of a building 5, by means of a device 1 as just described, the deflector 11 receiving the pieces 18, balls or equivalent being placed inside I of building 5 and being placed bent upwards, the desired direction of passage being that going from the outside E towards the inside I, the device 1 being intended for the air inlet A.
  • At least one such device 1 is also combined with at least one air extractor 37 opening into a volume of the building 5 where the device opens, through a mouth 38.
  • this volume is a room 6 of the building 5 comprising at least one mouth 38.
  • the latter is for example located in the lower part of the part 6 opposite the device 1.
  • the air extractor 37 is in communication with the mouth 38 thanks to a duct 39 disposed in particular vertically, the extractor 37 being preferably placed on the roof 40 of the building 5.
  • the air extractor 37 is of the venturi type and comprises a lower assembly 41 having a cap with frustoconical outer face with large lower base and an upper assembly 42 spaced axially from the lower assembly by spacers 43, this assembly 42 having a cap 44 and a bottom 45 with conical or frustoconical outer faces connected by their large bases 46, the conduit 39 opening into the external space 47 between the two assemblies 41, 42.
  • FIG. 7 in which the adjusting member 28 is represented in two possible positions, namely one P where the subspace 15a is the smallest and the other Q where this subspace 15a is the greatest.
  • the space 15a is all the smaller as the upper edge 30 of the adjusting member 28 is close to the front edge 33 and, on the contrary, is all the greater as the edge 30 is close to the rear edge 32. More the subspace 15a is restricted, the more effective the anti-backflow system is because the pieces 18 are housed in a smaller space and therefore obstruct the anti-backflow mouth 8 all the better.
  • the device 1 is also self-regulating. Indeed, the greater the air pressure gradient between the two sides of the device 1 (here we mean by sides of the device 1, the interior I and the exterior E respectively), the more the non-return system 2 s 'self-adapts to take this gradient into account, thanks in particular to the shape given to the device 1, in particular to the system 2.
  • this level is n for a pressure gradient ⁇ p and N for a pressure gradient ⁇ P greater than ⁇ p.
  • the level n is located lower than the level N, that is to say closer to the anti-refouling mouth 8 or further from the opening 14 than for the level N. The higher the level N it is that is to say the more the pieces 18, balls or the like are spaced from each other, the easier the air flow between them.
  • the device 1 with the anti-backflow system 2 also has the characteristic of being sound insulating, and this thanks to the sound insulating nature of the material constituting the pieces 18, balls or equivalent.
  • the pieces 18, balls or equivalent are placed in a flexible, permeable enclosure, of maximum volume at least equal to the maximum overall dimensions that the pieces 18, balls or equivalent, can take to constitute a kind of refill forming a structural whole which can be easily manipulated. If necessary, means are provided reciprocal removable attachment of this enclosure to the deflector 11.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Building Environments (AREA)
EP90402649A 1989-10-06 1990-09-26 Einrichtung zur Luftführung und Anlage, die eine derartige Einrichtung enthält Withdrawn EP0421841A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8913103A FR2652883B1 (fr) 1989-10-06 1989-10-06 Dispositif pour le passage d'air avec systeme antirefoulant, et installation comportant un tel dispositif.
FR8913103 1989-10-06

Publications (1)

Publication Number Publication Date
EP0421841A1 true EP0421841A1 (de) 1991-04-10

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EP90402649A Withdrawn EP0421841A1 (de) 1989-10-06 1990-09-26 Einrichtung zur Luftführung und Anlage, die eine derartige Einrichtung enthält

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EP (1) EP0421841A1 (de)
FR (1) FR2652883B1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2713318A1 (fr) * 1993-12-02 1995-06-09 Amphoux Andre Entrée d'air autoréglable, antiretour, acoustique à rouleau; installation comprenant une telle entrée d'air.
EP2264376A1 (de) * 2009-06-18 2010-12-22 Dir-Air Oy Luftventilator mit Filter und Rückschlagklappe zur Leitung von Austauschluft in einen Raum

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2749930B1 (fr) 1996-06-18 1998-09-04 Amphoux Andre Bouche d'extraction pour la ventilation d'une piece et systeme statique ou statomecanique incluant une telle bouche

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1604131A1 (de) * 1964-06-25 1970-09-03 Burup Poul Max Selbsttaetig den Luftdurchlass regelnde Lueftungsvorrichtung,insbesondere fuer Staelle
US4230174A (en) * 1978-10-20 1980-10-28 Eubank Marcus P Damper assembly

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1604131A1 (de) * 1964-06-25 1970-09-03 Burup Poul Max Selbsttaetig den Luftdurchlass regelnde Lueftungsvorrichtung,insbesondere fuer Staelle
US4230174A (en) * 1978-10-20 1980-10-28 Eubank Marcus P Damper assembly

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2713318A1 (fr) * 1993-12-02 1995-06-09 Amphoux Andre Entrée d'air autoréglable, antiretour, acoustique à rouleau; installation comprenant une telle entrée d'air.
EP2264376A1 (de) * 2009-06-18 2010-12-22 Dir-Air Oy Luftventilator mit Filter und Rückschlagklappe zur Leitung von Austauschluft in einen Raum

Also Published As

Publication number Publication date
FR2652883B1 (fr) 1994-02-11
FR2652883A1 (fr) 1991-04-12

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