EP0291783B1 - Module de filtre pour plafonds, murs de chambres antiseptiques, etc. - Google Patents

Module de filtre pour plafonds, murs de chambres antiseptiques, etc. Download PDF

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Publication number
EP0291783B1
EP0291783B1 EP88107293A EP88107293A EP0291783B1 EP 0291783 B1 EP0291783 B1 EP 0291783B1 EP 88107293 A EP88107293 A EP 88107293A EP 88107293 A EP88107293 A EP 88107293A EP 0291783 B1 EP0291783 B1 EP 0291783B1
Authority
EP
European Patent Office
Prior art keywords
frame
ceiling
filter module
sealing
wall cavity
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.)
Expired - Lifetime
Application number
EP88107293A
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German (de)
English (en)
Other versions
EP0291783A3 (fr
EP0291783A2 (fr
Inventor
Klaus Dr.-Ing. Fitzner
Uwe Dr.Rer.Nat. Plitt
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.)
Heinrich Nickel GmbH
Original Assignee
Heinrich Nickel GmbH
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
Priority claimed from DE8707079U external-priority patent/DE8707079U1/de
Application filed by Heinrich Nickel GmbH filed Critical Heinrich Nickel GmbH
Priority to AT8888107293T priority Critical patent/ATE104874T1/de
Publication of EP0291783A2 publication Critical patent/EP0291783A2/fr
Publication of EP0291783A3 publication Critical patent/EP0291783A3/fr
Application granted granted Critical
Publication of EP0291783B1 publication Critical patent/EP0291783B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B9/00—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation
    • E04B9/02—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation having means for ventilation or vapour discharge
    • 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
    • F24F13/28—Arrangement or mounting of filters

Definitions

  • the innovation relates to a filter module for clean room ceilings and walls or the like, which is formed by a pressure chamber and a ceiling or wall cavity kept under negative pressure and contains a suspended matter filter, which by means of a comprehensive frame via clamping elements acting thereon and associated sealing elements for Ceiling or wall cavity is interchangeable against the pressure space.
  • the innovation also deals with such filter modules in which the pressure chamber consists of a pressure box provided with a connection piece, which can be inserted into the ceiling or wall cavity kept under negative pressure, the suspended particle filter using the extensive frame engaging on this Clamping elements and associated sealing elements for the ceiling or wall cavity can be fixed interchangeably against the pressure box.
  • Such filter modules are used to neutralize the risk of leakage in suspended matter filter ceilings or walls. They are designed and installed so that the direction of flow is reversed by a leak by maintaining a negative pressure in the ceiling or wall cavity that the occurrence of such leaks is irrelevant because the leakage air flows away from the clean room into the ceiling or wall cavity.
  • the innovation is therefore based on the task of creating filter modules of the initially specified type for clean room ceilings and walls or the like which leak with structurally simple means, which in the seal between the respective suspended matter filter and the associated contact surfaces of the ceiling or wall cavity occur, is irrelevant, but nevertheless ensures a simple exchange of the suspended matter filter with its frame, while at the same time a low-turbulence piston flow preventing the floating of suspended matter is to be secured as well as damage to the filter modules is indicated.
  • a further development measure according to the invention consists in that the two sealing areas, at least approximately on the same level, are provided on the one hand between the frame of the suspended matter filter and the pressure box and on the other hand between a contact surface of the ceiling cavity and a pressure frame captured by the tensioning elements, and that the pressure frame as a built-in frame is formed to accommodate the suspended matter filter and its frame over the entire height.
  • the entire suspended matter filter, including the frame supporting it, is thus encompassed by the mounting frame and, through its mediation, is kept in flow connection with the ceiling or wall cavity kept under vacuum.
  • an embodiment according to claim 4 which consists in the fact that the frame of the suspended matter filter is held in contact with the mounting frame by an additional third seal on its end face facing the space, has proven particularly useful.
  • the gap space that may be present between the frame of the suspended matter filter and the mounting frame receiving it is also kept in flow connection with the ceiling or wall cavity in this way.
  • Another design option for a filter module according to the invention consists in that the two sealing areas, at least approximately on the same level, are assigned on the one hand to the frame of the suspended matter filter and on the other hand to a contact surface of the ceiling or wall cavity and that the suspended matter filter and the ceiling or wall cavity enclosing sealing frame can be pressed simultaneously against both sealing areas by means of the clamping elements.
  • Such a configuration is particularly recommended if not only the height of the pressure box of the filter modules, but also their suspended matter filters with frames are to be accommodated within the ceiling cavity.
  • each sealing area is formed by an independent sealing element.
  • both sealing areas are formed on a common sealing element, which preferably has a channel profile, the space of the channel profile remaining free in the sealing system of the sealing areas being connected to the ceiling or wall cavity.
  • Another training option for a filter module according to the innovation consists in that both sealing areas are assigned to the mutually facing ends of the frame of the suspended matter filter, that the upper sealing area can be placed on the pressure box and the lower sealing area can be placed on a supporting surface of the ceiling cavity, and that the support surface of the ceiling cavity and the pressure box can be clamped against each other and against the sealing areas by the clamping elements.
  • an innovation feature according to claim 10 is also to be seen in the fact that the spacing area between the sealing areas is in constant communication with the ceiling or wall cavity through slots, holes or similar openings provided in a cover between the pressure box and the ceiling or wall cavity .
  • a filter module which is characterized in that the frame of the suspended matter filter is provided on its front end face with a collar which projects beyond its outer contour and which at least approximately rests on the pressure surface for the two forms the same level sealing areas, one sealing area in front of the end face of the frame abuts the collar and the pressure box, while the other sealing area is arranged between the part of the collar projecting beyond the frame and a contact surface of the ceiling cavity.
  • the collar has a stiffening or stabilizing bend on its outer boundary edge.
  • the spacing area between the sealing areas through the boundary edge of the cover of the ceiling or wall cavity can be in constant communication therewith.
  • the cover carrying the suspended matter filter should be underpinned by a distance from rectangular frames that are spanned with fabric sheets. This first of all ensures that the suspended matter filters are protected from mechanical damage by a cover. If, however, damage should occur when moving furniture, due to careless handling with ladders or the like, this will obviously show up, since the overvoltage of the suspended matter filter is first visibly damaged.
  • the fabric webs provided at a distance from the suspended matter filters cause a slight pressure build-up, which in turn ensures that the filtered air is filtered through a large number of fine particles Meshes with practically the same flow rate flow so that there is a laminar piston flow on the outlet side and, especially if the frames on their outlet side have only small cross-sections, cross currents and turbulence are prevented, which could keep contaminants that have entered the clean room in suspension.
  • It has proven to be effective to seal adjacent rectangular frames at their joints.
  • plastic and metal wire mesh with different weaves, with small wire thicknesses and mesh sizes have proven successful, which cause a noticeable pressure drop in the amount of filter air conveyed.
  • Figures 1 to 4 of the drawing show as an application example of the innovation a so-called clean room filter ceiling, which is attached in the usual way as a substructure via hanging rods 1 or the like to a (not shown) building ceiling.
  • the hanging bars 1 or the like act on the support rails 2 via vibration isolators 3, the support rails 2, for example.
  • a Z-shaped cross section can have. Close to the upper horizontal profile leg of the support rails 2, the hanging rods 1 or the like attack via their vibration isolators 3, while the lower horizontal leg of the same is used for the attachment of essentially flat, plate-shaped covers 4 to the ceiling substructure.
  • Each individual, plate-like cover 4 is provided with a cutout 5, behind which a pressure box 6 is seated, which is provided with a connecting piece 7 for the supply line 8 of the raw air.
  • the pressure box 6 lies overall behind the level of the cover 4, which delimits a ceiling cavity 9 at the bottom.
  • a suspended matter filter 10 which is enclosed over its entire height by a frame 11 made of rigid, pressure-tight material.
  • the suspended matter filter 10 is accommodated in a mounting frame 12, for example made of relatively thin sheet metal, the legs of which have an essentially Z-shaped profile cross section, as can essentially be seen in FIGS. 1 and 4.
  • the frame 11 of the suspended matter filter 10 rests with its lower flat end face 11a, while its upper flat end face 11b also has one flat but wide seal 14 is assigned, which is located after the cutout 5 on the underside of the cover 4.
  • the upper horizontal flange 12b of the mounting frame 12 is directed outwards parallel to the cover 4 and interacts with a again relatively thin but flat seal 15, which lies on the same plane as the seal 14, but is spaced from it all around such that a frame-like free space 16 remains between the two seals 14 and 15.
  • the seals 13, 14 and 15 can also have cross-sectional shapes other than those shown. For example, they can be provided with a round cross-section; but they can also have a tapered, e.g. Get trapezoidal cross-sectional shape.
  • the lower horizontal flange of the mounting rails 2 and also the cover 4 held thereby are penetrated from top to bottom by threaded bolts 17 which can also pass through assigned holes in the upper flange 12b of the mounting frame 12.
  • the mounting frame 12 can be clamped with its upper horizontal flange 12b against the seal 15 and via this against the cover 4 in a sealing manner via wing nuts 18, which cooperate with the threaded bolts 17 as clamping elements.
  • the seal 13 between the lower horizontal flange 12a and the frame 11 of the suspended matter filter 10 and also the seal 14 between the frame 11 of the suspended matter filter 10 and the cover 4 are also below via the mounting frame 12 sealing preload set.
  • the free space 16 between the two seals 14 and 15 is connected to the gap 19 which is enclosed between the outer peripheral surface of the frame 11 and the inner surface of the web 12c on the mounting frame 12.
  • the ceiling cavity 9 above the cover and around the pressure box 6 is constantly kept under negative pressure.
  • This negative pressure acts on the free space 16 in the space between the two seals 14 and 15 through the slits 20, holes or similar openings provided in the cover 4.
  • the raw air thereby entering the free space 16 and the gap 19 is leaked through the slots 20 or the like are sucked into the ceiling cavity 9 and therefore cannot get into the clean room. Only the clean air that has passed through the suspended matter filter 10 can therefore enter the clean room with the flow directed downward.
  • FIG. 4 also shows means which, on the one hand, cover the freely downwardly projecting surfaces of the suspended matter filters and thus protect them from damage, but on the other hand, in the case of strong effects, at least give a sensible indication that such damage has occurred or may have occurred.
  • these further installations ensure that the filtered clean air emerging from the suspended matter filters 10 is fed to the clean room from above without significant turbulence and moves from top to bottom as a practically uniform piston flow, avoiding turbulence.
  • the suspended matter filters 10 are braced by means of installation frames 12 against plate-like covers 4, which have a substantially larger base area than the outlet area of the suspended matter filters 12.
  • Adjacent plate-like covers can be connected to one another in that bent edge strips 30 of the same, preferably via seals, are braced against one another by means of screws 31.
  • the joint of the covers 4 is underpinned by brackets 33 or U-shaped strips, which are connected to the covers 4 by means of screws 32. Bores of the bracket 33 are penetrated by tension rods 34 screwed to them, which engage via a spacer tube 35 in a threaded sleeve 36 of a support plate 37.
  • Rectangular frames 38 are braced against the underside of the support plate 37, which consist of angle profiles 39 with an inwardly pointing horizontal and a downwardly pointing vertical leg, and the corners of which are stiffened by gusset plates 40.
  • the rectangular frames 38 are clamped against the support plate 37 from below.
  • the joints 44 of the rectangular frame 38 are sealed off from one another by seals, not shown in the figure, in particular when special profiles are used which have grooves provided for receiving such seals.
  • the downward-facing free surface of the rectangular frames is underpinned by a fabric web 41, which is expediently glued to the downward-facing end faces of the angle profiles 39 and, if appropriate, the gusset plates 40.
  • Tensions occurring in this way can be avoided by the profiles forming the rectangular frames 38 prior to clamping the fabric web 41 can be bent slightly outwards so that the elastic tension of the angular profiles which are deformed when glued on keeps the fabric web 41 under tension.
  • the type of filter module shown in FIG. 5 of the drawing differs from that according to FIGS. 1 to 4 essentially in that not only the pressure box 6, but also the upstream suspended particle filter 10 and the frame 11 containing it are laid behind the plane of the covers 4 of the ceiling substructure.
  • This filter module lacks the mounting frame 12 with the Z-shaped legs. Instead, an essentially flat sealing frame 21 is used there, which is pressed by means of clamping elements, which can consist of threaded bolts 17 and wing nuts 18.
  • the seal 14 in the filter module according to FIG. 5 has the same arrangement and design as in the filter module according to FIGS. 1 to 4, that is, it is there between the flange frame 22 delimiting the opening side of the pressure box 6 and the flat end face 11b facing it the suspended matter filter 10 surrounding frame 11 clamped.
  • the seal 13 also has the same installation position there as in the case of the exemplary embodiment according to FIG. 4, i.e. it is assigned to the downward, flat end face 11a of the frame 11.
  • seal 15 does not lie in the same plane with the seal 14, but rather in the same plane with the seal 13 on the underside of the cover 4 of the ceiling substructure. Both seals 13 and 15 cooperate here with the sealing frame 21, which can be clamped via the clamping elements 17, 18 and thereby closes the free space 16 between the two seals 13 and 15 to the clean room.
  • FIG. 6 A type of filter module similar to the exemplary embodiment according to FIGS. 1 to 4 is shown in FIG. 6.
  • the seal 23 has essentially a channel cross section with two parallel sealing webs 23a and 23b, one of which comes to rest on the flange frame 22 of the pressure box 6 and the other near the cutout 5 on the cover 4.
  • the channel part located between the two sealing webs 23a and 23b delimits the free space 16, which is in constant suction connection through the slot 20 between the flange frame 22 of the pressure box 6 and the cutout 5 of the cover 4 with the ceiling cavity 9.
  • raw air passing by at the sealing web 23a of the seal 23 as leakage air cannot get into the clean room, but rather is discharged from the free space 16 within the seal 23.
  • the filter module according to FIG. 6 does not only result in a structural simplification in that only one, namely a channel profile seal 23, is used instead of three seals. Rather, the installation frame 12 can also be saved here because the tensioning elements 17, 18, which each consist, for example, of a threaded bolt 17 and a wing nut 18, can interact with the simple flat tensioning frame 24, which is attached to the frame 11 of the suspended matter filter 10 attacks.
  • FIG. 7 of the drawing A design similar to the filter module according to FIG. 5 for a filter module is again shown in FIG. 7 of the drawing.
  • the suspended matter filter 10 with its frame 11 is also installed behind the cover 4 of the ceiling substructure.
  • the frame 11 of the suspended matter filter 10 is clamped directly between the cover 4 of the ceiling substructure and the flange frame 22 of the pressure box 6 via the clamping elements 17, 18, which can also consist of threaded bolts and wing nuts here, by means of the two seals 13 and 14 .
  • the untreated air possibly passing by the seal 14 reaches the ceiling cavity 9, which is kept under negative pressure, and therefore cannot penetrate into the clean room.
  • FIG. 8 shows an embodiment, which is modified in comparison to FIG. 4 and is structurally considerably simplified, for filter modules which are used in clean room filter ceilings.
  • the suspended matter filter 10 connects, which is surrounded by the frame 11 made of rigid, pressure-tight material.
  • the upper end face 11b of the frame 11 carries a collar 25 which, for example, consists of sheet metal and is angled at least on its outer edge for stiffening or stabilization.
  • the collar 25 is fastened, for example screwed, to the end face 11b of the frame 11. Its profile width is larger than the wall thickness of the frame 11, such that it projects beyond the outer contour of the frame 11 by a considerable amount, as can be clearly seen in FIG. 8.
  • the main plane of the collar 25 extends parallel to the plate-shaped cover 4 of the ceiling substructure. It forms the contact surface for two seals 14 and 15, which lie approximately on the same plane and are spaced apart from one another all around such that they delimit a frame-like free space 16 between them.
  • the seal 14 lies on the collar 25 in the region in front of the end face 11b of the frame 11, while the seal 15 comes to rest on the section of the collar 25 which projects beyond the outer contour of the frame 11.
  • Threaded bolts 17 and wing nuts 18 can be used as clamping elements, as shown in FIG. 4. These tensioning elements can be made effective either directly between the collar 25 of the frame 11 and the ceiling substructure, in a similar manner, as shown in FIG. 4. But you can also get an arrangement and training, as can be seen for example from Fig. 6 of the drawing.
  • the design of the filter module according to FIG. 8 is considerably simplified compared to that according to FIG. 4, because not only the mounting frame 12 but also the seal 13 provided between this and the lower end face 11a of the frame 11 can be saved.
  • a pressure chamber 26 is provided directly below the building ceiling, ie no special pressure box is arranged here. Overall, the ceiling or wall cavity 9 is upstream of this pressure chamber 26, as can be clearly seen in FIG. 9.
  • the ceiling or wall cavity 9 receives the frame 11 comprising the suspended matter filter 10 over its overall depth.
  • the frame 11 of the suspended matter filter 10 is held interchangeably by means of the sealing frame 21 via the tensioning elements 17, 18, the cover 4 forming the outer boundary of the ceiling or wall cavity 9 being parallel to the outer boundary surface of the frame 11 has angled boundary edge 27 which projects into the ceiling or wall cavity.
  • the pressure chamber 26 is delimited pressure-tight against the ceiling or wall cavity 9 by a cover 28. which also has an angled boundary edge 29 which projects into the pressure chamber 26.
  • the cover 28 for the pressure chamber 26 is dimensioned such that its boundary edge 29 overlaps the frame 11 of the same with the suspended matter filter 10 inserted in the ceiling or wall cavity 9, so that the boundary edge 29 is approximately at the same level with the Inner surface of the frame 11 comes to rest, as can be clearly seen in FIG. 9.
  • the seal 13 lies between the lower, flat end face 11a of the frame 11 containing the suspended matter filter 10 and the sealing frame 21.
  • the seal 14 is provided between the upper, flat end face 11b of the frame 11 and the cover 28 of the pressure chamber 26.
  • the seal 15 is finally located between the cover 4 of the ceiling or wall cavity 9 and the sealing frame 21.
  • the space 16 delimited by the two seals 13 and 15 and the sealing frame 21 is constantly in contact with the ceiling or wall cavity 9 in through the spacing gap between the angled boundary edge 27 of the cover 4 and the outer boundary surface of the frame 11 containing the suspended matter filter 10 Connection. Leakage air entering the free space 16 is therefore safely drawn off into the ceiling or wall cavity 9. Leakage air that passes the upper seal 14 is also in this ceiling or. Aspirated wall cavity 9, can not get past the suspended matter filter 10 in the clean room.
  • seals 13, 14 and 15 have a trapezoidal cross-sectional shape over part of their thickness.
  • the seals 13 and 14 each abut with their broad base surface on the flat end faces 11a and 11b of the frame 11, while their narrower head surface is in contact with the sealing frame 21 or the cover 28.
  • the seal 15 on the other hand, rests with its broad base surface on the sealing frame 21, while its narrower head surface is brought into contact with the cover 4.
  • the level of the suspended matter filter 10 is also underpinned in accordance with FIG. 9 while maintaining a distance from rectangular frames 38 which are formed from profile bars 39. which in turn carry a fine-mesh fabric web 41.
  • Rectangular frames 38 can adjoin one another directly and at the same height, as is shown on the right-hand side of FIG. 9, but they can also be offset in height and partially overlapping, for example to adapt to the room size.
  • the rectangular frames 38 are formed by triangular profiles 45, which have grooves 46 in their reinforced end regions for receiving seals.
  • the triangular profiles forming a rectangular frame are connected by a preferably cube-shaped corner body 47 which is equipped on two sides with plug-in projections 48 which fill the hollow profile of the triangular profiles 45 engage their ends.
  • This provides the clamping screws 42 each with a solid body, which in turn carries the profiles by means of the plug-in lugs.
  • corner bodies 47 can also be designed so that the passage of lines, for example electrical lines or water supply lines from sprinkler systems, is possible. It may be advisable to replace the outer edges of the corner bodies with vertically directed quarter-cylindrical recesses.
  • a filler plate 49 is provided, one side of which is bent in a U-shape and is connected to the support plate 37 by a tensioning screw 42.
  • a side strip 50 is folded, and at least the base surface of the filler plate 49 is perforated or provided with recesses and covered with a fabric web 41, preferably glued.
  • the filler plate 49 or its side strip 50 expediently does not completely adjoin the wall 52, so that a gap 54 remains between the side strip 50 and the wall 52. First of all, such a gap makes it easier to adapt to the cross-sectional area of the room.
  • a remaining, relatively small gap proves to be advantageous, since the clean air can pass through it at a higher speed than the fine-mesh fabric web 41.
  • a somewhat higher flow velocity is achieved along the walls of the clean room than in the other surface areas, so that the effect of damping the air flow is counteracted by the friction along the walls.
  • the lower region of the transparent mat 51 designed as a strip is placed behind the side strip 50 and optionally fastened there, while the upper region of the transparent mat 51 is connected to the glass wall 52 by means of an adhesive strip 53.
  • corresponding connections can also be achieved by means of screws, nails or the like, possibly with the aid of strips, for example those made of plastic.
  • a suspension on hanging rods 1 is shown, which hold the tension rods 34, which are hidden here by means of tension lock-like threaded sleeves 64, which in turn carry support plates 37 and, by means of support plates 58, sheet metal strips 59 at different heights.
  • the distances are expediently maintained by means of spacer tubes 56, 57 and 63, which are braced against one another via nuts 55.
  • the sheet metal strips 59 are essentially U-shaped, the yoke width being larger than the distance between the legs of the U-profile, so that in the yoke area, outwardly projecting strips are formed.
  • Sealing strips 60, 61 are applied to each of these strips, on which covers 4 and 28 are placed, which in turn, clamped by means of threaded bolts 17, clamp the frame 11 of the suspended matter filter 10 via seals.
  • 37 rectangular frames 38 are braced with support plates
  • triangular angle profiles 45 which are connected to one another by means of cube-shaped corner bodies 47 and their plug-in extensions 48. Only the lower surfaces of the triangular profiles 45 appear here as the point of disturbance in the region of the flow passing through the fabric webs 41. These can also be reduced in their effect by, in contrast to the illustration in FIG.
  • the frames being connected to the support plate 37 at a small, gap-forming distance, so that narrow clean air streams passing through the fabric webs 41 narrow , more intensive clean air flows are formed.
  • the less damped currents passing through the gaps can be adjusted on the one hand by the spacing of the frames.
  • it has proven to be advantageous to limit this gap by means of sealing strips inserted into profiled bars, which either directly against one another or if complete sealing is desired. connect to contact surfaces of the opposite frame.
  • seals that either, e.g.
  • knobs or vertically extending ribs by means of attached knobs or vertically extending ribs, only with these on support areas of the adjacent frame or an adjacent one Place the wall so that gaps remain between the supporting elevations of the sealing strips, the thickness of which corresponds to the increase in the knobs or ribs and is therefore structurally defined.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
  • Ventilation (AREA)

Claims (23)

  1. Module de filtre pour plafonds, parois ou analogue de salles blanches, qui est constitué par une chambre sous pression (6 ou 26) et par un espace creux de plafond ou de paroi (9) maintenu en dessous de la pression atmosphérique, et qui comporte un filtre pour matières en suspension dans l'air (10) qui est fixé de façon remplaçable, à l'aide d'un cadre qui l'entoure (11), moyennant des organes de serrage en interaction avec celui-ci (17/18), dans l'espace creux de plafond ou de paroi (9), orienté vers le bas ou vers l'avant et étanche par rapport à la chambre sous pression (6 ou 26),
       caractérisé
    - en ce que l'espace creux de plafond ou de paroi (9) est disposé généralement en amont de la chambre sous pression (5 ou 26) et forme sur sa profondeurde construction, le logement pour le cadre (11) qui entoure le filtre de matières en suspension;
    - en ce que deux ou trois zones d'étanchification (13, 14 ou 14, 15 ou 23a, 23b ou 13, 14, 15) sont prévues à distance l'une de l'autre entre le cadre (11) du filtre de matières en suspension dans l'air (10), la chambre sous pression (6 ou 26) et l'espace creux de plafond ou de paroi (9);
    - et en ce que les espaces délimités par les zones d'étanchification en interaction (13, 14 ou 14, 15 ou 23a, 23b ou 13, 14, 15) à l'extérieur du cadre (11) du filtre de matières en suspension (10), sont ouverts uniquement vers l'espace creux (9) des plafonds ou parois.
  2. Module de filtre pour plafonds et parois de salles blanches ou analogues, constitué par un caisson sous pression (6) muni d'une tubulure de raccordement (7), qui est agençable dans un espace creux de plafond ou de paroi (9) maintenu en dessous de la pression atmospérique, et par un filtre de matières en suspension dans l'air (10) qui est fixé de façon remplaçable contre le caisson sous pression (6) à l'aide d'un cadre (11) qui l'entoure, moyennant des organes de serrage (17, 18) agissant sur celui-ci ainsi que des éléments d'étanchification dans l'espace creux de plafond ou de paroi (9), vers le bas ou vers l'avant,
       caractérisé
    - en ce que deux ou trois zones d'étanchification (13, 14 ou 14, 15 ou 23a, 23b ou 13, 14, 15) distantes l'une de l'autre sont prévues entre le cadre (11) du filtre de matières en suspension dans l'air (10), l'espace creux de plafond ou de paroi (9) et le caisson sous pression (6), et
    - en ce que les espaces délimités par les zones d'étanchification en interaction (13, 14 ou 14, 15 ou 23a, 23b ou 13, 14, 15), à l'extérieur du cadre (11) du filtre de matières en suspension dans l'air (10) sont ouverts uniquement vers l'espace creux (9) des plafonds ou parois.
  3. Module de filtre selon la revendication 2,
       caractérisé en ce que les deux zones d'étanchification (14, 15) sont prévues au moins approximativement dans un même plan, d'une part entre le cadre (11) de filtre de matières en suspension (10) et le caisson sous pression (6), et d'autre part, entre une surface d'appui (4) de l'espace creux de plafond ou de paroi (9) et un cadre de serrage (12) en prise avec les organes de serrage (17, 18), et en ce que le cadre de serrage (12) consiste en un cadre encastrable qui constitue le logement du filtre de matières en suspension (10) et du cadre (11) de celui-ci sur toute la hauteur de ceux-ci.
  4. Module de filtre selon la revendication 3,
       caractérisé en ce que le cadre (11) du filtre de matières en suspension (10) est maintenu en contact avec le cadre encastrable (12), moyennant un troisième joint d'étanchéité supplémentaire (13), à sa face frontale (11a) orientée vers la salle blanche.
  5. Module de filtre selon la revendication 1 ou 2,
       caractérisé en ce que les deux zones d'étanchification (14, 15) sont agencées au moins approximativement dans un même plan, associées d'une part au cadre (11) du filtre de matières en suspension (10) et, d'autre part à une surface de contact (4) de l'espace creux de plafond ou de paroi (9), et en ce qu'un cadre d'étanchification (2) placé en dessous du filtre de matières en suspension (10) et de l'espace creux de plafond ou paroi (9) est serrable simultanément contre les deux zones d'étanchification (14, 15) au moyen des organes de serrage (17, 18).
  6. Module de filtre selon la revendication 5,
       caractérisé en ce que le cadre (11) du filtre de matières en suspension (10) est maintenu en contact avec la chambre ou le caisson sous pression (26, 6) par un troisième joint d'étanchéité supplémentaire (14).
  7. Module de filtre selon l'une des revendications 1 à 6,
       caractérisé en ce que chaque zone d'étanchification (13, 14, 15) est constituée par un élément d'étanchéité individuel.
  8. Module de filtre selon l'une des revendications 2, 3 et 5,
       caractérisé en ce que chaque zone d'étanchification (13, 14, 15) est constituée par un élément d'étanchéité individuel.
  9. Module de filtre selon la revendication 1 ou la revendication 2,
       caractérisé en ce que les deux éléments d'étanchéité (13, 14) sont associés aux extrémités opposées (11a, 11b) du cadre (11) du filtre de matières en suspension (10), en ce que la zone d'étanchification supérieure (14) est applicable contre la chambre ou le caisson sous pression (26, 6) et la zone d'étanchification inférieure (13) est applicable contre une surface d'appui (4) de l'espace creux de plafond ou de paroi (9), et en ce que la surface d'appui (4) de l'espace creux de plafond ou de paroi (9) ainsi que la chambre ou le caisson sous pression (26 , 6) sont serrables l'un contre l'autre et contre les zones d'étanchification (13, 14) à l'aide d'organes de serrage (17, 18).
  10. Module de filtre selon la revendication 2,
       caractérisé en ce que la distance (16) entre les zones d'étanchification (14, 15 ou 13, 15 ou 23a, 23b) est continuellement en liaison avec l'espace creux de plafond ou de paroi (9), moyennant des fentes (20), tous ou autres perçages analogues pratiqués dans un récouvrement (4) prévu entre le caisson sous pression (6) et l'espace creux de plafond ou de paroi (9).
  11. Module de filtre selon la revendication 2,
       caractérisé en ce que le cadre (11) du filtre de matières en suspension (10) comporte, à sa face frontale supérieure (11b) un colleret (25) qui fait saillie sur son contour extérieur et qui constitue la surface d'appui pour les deux zones d'étanchification (14, 15) qui sont au moins approximativement dans un même plan, l'une des zones d'étanchification (14) étant en contact avec le colleret (25) et le caisson sous pression (6) devant la face frontale (11b) du cadre (11), tandis que l'autre zone d'étanchification (15) est agencée entre le segment du colleret (25) qui fait saillie sur le cadre (11) et une surface d'appui (4) de l'espace creux de plafond ou de paroi (9).
  12. Module de filtre selon les revendications 2 et 11
       caractérisé en ce que le colleret comporte une pliure de renforcement ou de stabilisation (26) à son bord extérieur.
  13. Module de filtre selon la revendication 1
       caractérisé en ce que la distance (16) entre les zones d'étanchification (14,15) est continuellement en liaison avec l'espace creux de plafond ou de paroi (9) par le bord (27) du recouvrement (4) de celui-ci.
  14. Module de filtre selon les revendications 1 à 13
       caractérisé en ce que les recouvrements (4) qui portent les filtres de matières en suspension (10) reposent à distance sur des cadres rectangulaires (38) sur lesquels sont tendues des bandes textiles (41).
  15. Module de filtre selon les revendications 1 à 14
       caractérisé en ce que des cadres rectangulaires (38) adjacents sont étanchifiés l'un par rapport à l'autre aux points de contact (44).
  16. Module de filtre selon la revendication 15,
       caractérisé en ce que les joints d'étanchéité et/ou les surfaces de support de ceux-ci sont munis d'éléments en saillie qui garantissent, lors de l'appui, une fente prédéterminée.
  17. Module de filtre selon la revendication 14 ou 15,
       caractérisé en ce que les cadres rectangulaires (38) sont constitués par des profilés d'angle ou triangulaires (39, 45) et en ce que les branches de profilé (39) orientées vers le bas sont assemblées par collage avec la bande textile (41).
  18. Module de filtre selon l'une des revendications 14 à 16,
       caractérisé en ce que la bande textile (41) consiste en un tissu en matériau synthétique ou de fil métallique.
  19. Module de filtre selon la revendication 17 ou 18,
       caractérisé en ce que les zones extrèmes des profilés triangulaires (45) constituant les cadres rectangulaires (38) sont assemblées par emboîtement dans des embouts (48) d'éléments de coin (47).
  20. Module de filtre selon les revendications 14 à 19,
       caractérisé en ce que des feuilles métalliques de remplissage perforées et/ou ajourées (49) sont reliées aux cadres rectangulaires (38), lesdites feuilles métalliques de remplissage étant revêtues d'une bande tissée (41).
  21. Module de filtre selon la revendication 20,
       caractérisé en ce que les feuilles métalliques de remplissage (49) comportent, du côté orienté vers les cadres rectangulaires (38), une pliure en forme de U dont la hauteur correspond à celle des cadres rectangulaires, et en ce qu'elles comportent, à l'extrémité libre une bande latérale repliée (50).
  22. Module de filtre selon l'une des revendications 14 à 21,
       carctérisé en ce que les cadres rectangulaires (38) et/ou les feuilles métalliques de remplissage (50) forment une fente (54), avec la paroi adjacente (52), et en ce qu'une natte transparente est éventuellement agencée devant la fente à titre de résistance d'écoulement.
  23. Module de filtre selon l'une des revendications 1 à 22,
       caractérisé en ce que les tringles de suspension (1) ou les tiges de serrage (34) portent des profilés en forme de U (59) dont la longueur de l'âme dépasse la distance entre les branches et dont les extrémités de l'âme qui font saillie supportent les bords des revêtements (4, 28) via des points d'étanchéité (60, 61).
EP88107293A 1987-05-16 1988-05-06 Module de filtre pour plafonds, murs de chambres antiseptiques, etc. Expired - Lifetime EP0291783B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT8888107293T ATE104874T1 (de) 1987-05-16 1988-05-06 Filtermodul fuer reinraumdecken und -waende oder dergleichen.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE8707079U 1987-05-16
DE8707079U DE8707079U1 (de) 1987-05-16 1987-05-16 Filtermodul für Reinraumdecken und -wände od.dgl.
DE8710781U 1987-08-06
DE8710781U DE8710781U1 (de) 1987-05-16 1987-08-06 Filtermodul für Reinraumdecken und -wände o.dgl.

Publications (3)

Publication Number Publication Date
EP0291783A2 EP0291783A2 (fr) 1988-11-23
EP0291783A3 EP0291783A3 (fr) 1991-02-06
EP0291783B1 true EP0291783B1 (fr) 1994-04-27

Family

ID=25951772

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88107293A Expired - Lifetime EP0291783B1 (fr) 1987-05-16 1988-05-06 Module de filtre pour plafonds, murs de chambres antiseptiques, etc.

Country Status (2)

Country Link
EP (1) EP0291783B1 (fr)
DE (2) DE8710781U1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3827918A1 (de) * 1988-08-17 1990-02-22 Nickel Gmbh Heinrich Laminarisator
FR2648496B1 (fr) * 1989-05-25 1994-04-15 Bader Michel Faux plafonds en tissus tendus au moins en partie permeables utilises pour creer un volume de distribution d'air en chauffage ou climatisation
DE19519565A1 (de) * 1995-05-27 1996-11-28 Schako Metallwarenfabrik Filterkasten
US5947170A (en) * 1998-02-10 1999-09-07 Vital Signs Inc. Aseptic liquid filling
FR2913607B1 (fr) * 2007-03-14 2013-03-01 Antway Dispositif de filtration ameliore.
CN103438556A (zh) * 2013-08-23 2013-12-11 无锡汉佳半导体科技有限公司 一种手术室送风天花

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7615462U1 (de) * 1975-05-15 1976-10-21 Filtest S.A., Bruessel Vorrichtung zum abdichten von luftfiltern
US4469335A (en) * 1982-07-22 1984-09-04 American Sterilizer Company Sealing apparatus with sealing device operable under pressure differential established thereacross
DE3443483A1 (de) * 1984-11-29 1986-05-28 Kaefer Isoliertechnik Gmbh & Co Kg, 2800 Bremen Gasdichte (stroemungsdichte) unterdecke

Also Published As

Publication number Publication date
EP0291783A3 (fr) 1991-02-06
DE3889249D1 (de) 1994-06-01
DE8710781U1 (de) 1987-10-01
EP0291783A2 (fr) 1988-11-23

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