FR2477031A1 - Air filter for ventilation system has pleated sheet element - protected from gusts of wind by baffle on air inlet side - Google Patents
Air filter for ventilation system has pleated sheet element - protected from gusts of wind by baffle on air inlet side Download PDFInfo
- Publication number
- FR2477031A1 FR2477031A1 FR8104252A FR8104252A FR2477031A1 FR 2477031 A1 FR2477031 A1 FR 2477031A1 FR 8104252 A FR8104252 A FR 8104252A FR 8104252 A FR8104252 A FR 8104252A FR 2477031 A1 FR2477031 A1 FR 2477031A1
- Authority
- FR
- France
- Prior art keywords
- filter
- wind
- gusts
- baffle
- inlet side
- 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- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/52—Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material
- B01D46/521—Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material using folded, pleated material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
- B01D46/12—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces in multiple arrangements
- B01D46/121—V-type arrangements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/24—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
- B01D46/2403—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies characterised by the physical shape or structure of the filtering element
- B01D46/2411—Filter cartridges
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2265/00—Casings, housings or mounting for filters specially adapted for separating dispersed particles from gases or vapours
- B01D2265/06—Details of supporting structures for filtering material, e.g. cores
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2271/00—Sealings for filters specially adapted for separating dispersed particles from gases or vapours
- B01D2271/02—Gaskets, sealings
Abstract
Description
La présente invention concerne un filtre à matières en suspension pour des installations de ventilation, muni d'une matière filtrante plissée et recouvert à chacune de ses faces en bout d'une paroi conformée en couvercle et fixée au moyen d'une masse isolante (compound) ou d'un ciment adhésif. The present invention relates to a suspended matter filter for ventilation installations, provided with a pleated filter material and covered at each of its faces at the end of a wall shaped as a cover and fixed by means of an insulating mass (compound ) or an adhesive cement.
Les filtres de ce type servent à filtrer l'air arrivant dans un local par un conduit. Ils doivent être équipés de moyens qui empêchent la détérioration de la matière filtrante lorsqu'il se produit des "coups de vent". Ceuxci sont caractérisés par une surpression qui s'établit en un temps extrêmement court, de tordre de quelques millisecondes, puis est suivie d'une pression nulle ou même d'une dépression. Filters of this type are used to filter the air entering a room through a duct. They must be equipped with means which prevent deterioration of the filter material when "gusts of wind" occur. These are characterized by an overpressure which is established in an extremely short time, twisting by a few milliseconds, then is followed by zero pressure or even by a depression.
Des filtres à air connus possèdent des systèmes à chicanes pour recevoir et réfléchir l'impact de ces coups de vent. Known air filters have baffle systems for receiving and reflecting the impact of these gusts of wind.
Un filtre à air connu, destiné à des installations de ventilation de locaux, est constitué par un milieu filtrant logé dans un boîtier muni d'une tubulure~ pour l'entrée de l'air et d'une autre pour sa sortie. Une plaque formant chicane est disposée entre la tubulure d'entrée et le milieu filtrant sur le trajet de l'air. Il s'agit de préférence d'un disque circulaire dont le diamètre est au moins égal au diamètre intérieur de la tubulure d'entrée. A known air filter, intended for premises ventilation installations, is constituted by a filtering medium housed in a box provided with a tube ~ for the air intake and another for its output. A baffle plate is disposed between the inlet manifold and the filter medium on the air path. It is preferably a circular disc whose diameter is at least equal to the inside diameter of the inlet pipe.
Il est fixé au bottier par des attaches. On ménage entre la chicane et la tubulure d'entrée un espace suffisant pour que la section d'écoulement du courant d'air dévié ne soit pas réduite. La présence de la chicane empêche un "coup de vent" éventuel de heurter directement le milieu: filtrant en face de la tubulure d'entrée. La déviation imposée par elle dirige le coup de vent vers la paroi péri- phérique du boitier et, de ce fait, précisément vers l'endroit menacé du milieu filtrant, surtout s'il s'agit d' un élément filtrant pour matières en suspension. En effet, à cet endroit, untel élément est fixé au boîtier ou à un autre support par collage et donc particulièrement rigide. It is fixed to the shoemaker by clips. A space is left between the baffle and the inlet pipe so that the flow section of the deflected air stream is not reduced. The presence of the baffle prevents a possible "gust of wind" from hitting the environment directly: filtering in front of the inlet pipe. The deviation imposed by it directs the gust of wind towards the peripheral wall of the box and, therefore, precisely towards the endangered place of the filter medium, especially if it is a filter element for suspended matter . Indeed, at this point, such an element is fixed to the housing or to another support by gluing and therefore particularly rigid.
L'impact de l'air le soumet à des efforts de cisaillement qui peuvent l'arracher tout net (modèle d'utilité allemand 19 95 835).The impact of the air subjects it to shearing forces which can tear it apart (German utility model 19 95 835).
Un autre filtre à matières en suspension connu, destiné à des appareils de protection respiratoire, comporte une matière filtrante plate et plissée en étoile. Il est recouvert à ses deux faces en bout par des parois conformées en couvercle, auxquelles il est fixé au moyen d'une masse isolante ou compound. Les deux parois en bout sont entretoisées par un cylindre intérieur en tôle perforée. L' air à filtrer arrive par ce cylindre. Il s'écoule radialement de l'intérieur vers l'extérieur en traversant les trous de la tôle et la matière filtrante. Un ncoup de vent" eventuel est réfléchi par la paroi en bout opposée à la tubulure d'entrée et traverse la matière filtrante à une vitesse élevée. Des efforts de cisaillement importants sollicitent alors cette matière au-dessus du compound et risque de la détériorer (brevet allemand il 82 528). Another known suspended matter filter, intended for respiratory protection devices, comprises a flat filter material pleated in a star shape. It is covered at its two end faces by walls shaped as a cover, to which it is fixed by means of an insulating mass or compound. The two end walls are braced by an inner cylinder made of perforated sheet metal. The air to be filtered arrives through this cylinder. It flows radially from the inside to the outside through the holes in the sheet and the filter material. A possible "wind" is reflected by the end wall opposite to the inlet pipe and crosses the filter material at a high speed. High shear forces then stress this material over the compound and risk damaging it ( German patent il 82 528).
L'invention a donc pour objet de réaliser un filtre à matières en suspension pour installations de ventilation que les sollicitations dues aux coups de vent laissent intact, c'est-à-dire dans lequel les augmentations brutales de pression de l'air filtré ne peuvent atteindre les endroits menacés, légèrement au-dessus du compound. The object of the invention is therefore to provide a suspended matter filter for ventilation installations which the stresses due to gusts of wind leave intact, that is to say in which the sudden increases in pressure of the filtered air do not can reach threatened places, slightly above the compound.
A cet effet, dans le filtre selon l'invention, des chicanes sont disposées sur le côté entrée de l'air, près de la matière filtrante, et sont fixées avec celle-ci dans la matière isolante ou le ciment adhésif. La hauteur libre de ces chicanes peut varier entre 2 et 5 cm. Elles peuvent être formées parts bordS relevés ou rabattus. To this end, in the filter according to the invention, baffles are arranged on the air inlet side, near the filter material, and are fixed with the latter in the insulating material or the adhesive cement. The free height of these baffles can vary between 2 and 5 cm. They can be formed from raised or folded edges.
La disposition avantageusement simple des chicanes ou la conformation en chicane d'éléments intérieurs créent une structure dont la configuration élimine tout risque de détérioration par les sautes brusques de pression de l'air filtré. Les zones qui se trouvent directement au-dessus de la masse isolante ou du ciment adhésif sont soustraites aux effets des efforts de cisaillement. La force de traction qui est créée lors de la répartition de ces coups de vent sur toute la surface à l'endroit où la matière filtrante est fixée dans la masse isolante ou le ciment adhésif et s'exerce sur la dite matière est supportée sans dommage par celle-ci.La fixation commune des chicanes et de la matière filtrante plissée dans l'espace prévu à cet effet et défini par la forme des couvercles est, du point de vue du montage, simple et sûre
De toute façon, l'invention sera bien comprise à 1' aide de la description qui suit, en référence au dessin schématique annexé, représentant, à titre d'exemple non limitatif, une forme d'exécution de ce filtre:
Fig. 1 est une vue en coupe longitudinale d'un filtre rond selon l'invention;
Fig. 2 est une vue en coupe suivant A - B de fig. i;
Fig. 3 est une vue de dessus montrant des paquets# de plis disposés en accordéon de la matière filtrante.The advantageously simple arrangement of the baffles or the baffle conformation of interior elements creates a structure whose configuration eliminates any risk of deterioration by sudden pressure changes in the filtered air. The zones which are directly above the insulating mass or the adhesive cement are subtracted from the effects of shearing forces. The tensile force which is created during the distribution of these gusts of wind over the entire surface at the place where the filtering material is fixed in the insulating mass or the adhesive cement and is exerted on said material is supported without damage The joint fixing of the baffles and the pleated filter material in the space provided for this purpose and defined by the shape of the covers is, from the point of view of assembly, simple and safe.
In any case, the invention will be clearly understood with the aid of the description which follows, with reference to the appended schematic drawing, representing, by way of nonlimiting example, an embodiment of this filter:
Fig. 1 is a view in longitudinal section of a round filter according to the invention;
Fig. 2 is a sectional view along A - B of FIG. i;
Fig. 3 is a top view showing packets # of folds arranged in an accordion of the filter material.
Les figures 1 et 3 montrent le filtre à matières en suspension sous les deux formes sous lesquelles il se présente le plus souvent: la forme ronde et celle où les paquets de plis de la matière filtrante sont disposés en accordéon. Figures 1 and 3 show the suspended matter filter in the two forms in which it is most often found: the round shape and that in which the packets of folds of the filtering material are arranged in an accordion.
Dans le filtre rond 1, la matière filtrante 2, qui est plissée en étoile, est, aux faces en bout du filtre, fixée aux couvercles 4, 5 au moyen d'une masse isolante (compound) ou d'un ciment adhésif 2. L'orifice d'entrée de l'air 6 est prévu dans le couvercle supérieur 4. Les couvercles i, 5 ont leur bord périphérique 7 respectivement relevé ou rabattu, tandis que leur partie centrale est refoulée en 12 vers l'intérieur du filtre, définissant ainsi avec le bord replié un logement pour la masse ou le ciment. In the round filter 1, the filter material 2, which is pleated in a star, is, at the end faces of the filter, fixed to the covers 4, 5 by means of an insulating mass (compound) or of an adhesive cement 2. The air inlet orifice 6 is provided in the upper cover 4. The covers i, 5 have their peripheral edge 7 respectively raised or folded down, while their central part is pushed back in 12 towards the inside of the filter, thus defining with the folded edge a housing for the mass or the cement.
Des chicanes 8, qui ont ici la forme de bagues, sont fixées dans la masse ou ciment 2, à faible distance du bord intérieur 9 de la matière filtrante plissée. Elles ont une hauteur libre comprise entre 2 et 5 cm. En cas de coup de vent, l'onde de choc de l'air qui pénètre dans le filtre et qui, après impact, est réfléchie, ne peut plus exercer radiale ment un effort de cisaillement sur la matière filtrante, directement au-dessus de la masse ou ciment 2. Cette onde de choc ne peut atteindre la matière filtrante qu'au-delà du bord libre des c#hicanes 8 et elle se répartit alors sur toute la surface. La matière filtrante 2 ne subit alors dans la zone de sa fixation qu'un effort de traction
Le filtre représenté à la figure 3 comporte le même type de chicanes, mais ces chicanes Il sont ici des bandes adaptées à la forme de la matière filtrante 2.Baffles 8, which here have the form of rings, are fixed in the mass or cement 2, a short distance from the inner edge 9 of the pleated filter material. They have a free height of between 2 and 5 cm. In the event of a gust of wind, the shock wave of the air which penetrates into the filter and which, after impact, is reflected, can no longer exert radially a shearing force on the filtering material, directly above the mass or cement 2. This shock wave can reach the filtering material only beyond the free edge of the c # baffles 8 and it is then distributed over the entire surface. The filter material 2 then only undergoes in the area of its fixing a tensile force
The filter shown in FIG. 3 includes the same type of baffles, but these baffles II are here bands adapted to the shape of the filtering material 2.
Les chicanes 8, li peuvent être en métal, en matière plastique ou tout autre matériau approprié. The baffles 8, li can be made of metal, plastic or any other suitable material.
Claims (3)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19803007756 DE3007756A1 (en) | 1980-02-29 | 1980-02-29 | HEPAID FILTER FOR VENTILATION SYSTEMS |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR2477031A1 true FR2477031A1 (en) | 1981-09-04 |
Family
ID=6095935
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR8104252A Withdrawn FR2477031A1 (en) | 1980-02-29 | 1981-02-26 | Air filter for ventilation system has pleated sheet element - protected from gusts of wind by baffle on air inlet side |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE3007756A1 (en) |
| FR (1) | FR2477031A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0206336A2 (en) * | 1985-06-25 | 1986-12-30 | Nippondenso Co., Ltd. | Filter element |
| US5098767A (en) * | 1989-02-15 | 1992-03-24 | Pall Corporation | Filter device with micropleats and macropleats |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3822443A1 (en) * | 1988-07-02 | 1989-03-23 | Knecht Filterwerke Gmbh | Plate filter made of a pleated filter web material |
| DE19828049B4 (en) * | 1998-06-24 | 2011-01-27 | Mann + Hummel Gmbh | Filter system with V-shaped filter cartridge |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1102705B (en) * | 1953-10-01 | 1961-03-23 | Purolator Products Inc | Process for the production of an exchangeable filter element |
| FR1563990A (en) * | 1968-03-05 | 1969-04-18 | ||
| FR2261041A1 (en) * | 1974-02-18 | 1975-09-12 | Cfea |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE7107436U (en) * | 1971-09-09 | Bischoff B | Insert filter for a cylindrical housing, especially for cleaning machines | |
| DE1743634U (en) * | 1954-04-30 | 1957-04-25 | Bosch Gmbh Robert | FILTER FOR LIQUIDS. |
| DE1087569B (en) * | 1956-12-06 | 1960-08-25 | Bendix Aviat Corp | Filter insert |
| DE1995835U (en) * | 1968-06-07 | 1968-10-31 | Auergesellschaft Gmbh Fa | SPACE FILTER. |
| DE7504574U (en) * | 1974-03-07 | 1975-06-12 | Filtri L Spa | Lube oil filters for automotive internal combustion engines |
| DE7902475U1 (en) * | 1979-01-26 | 1979-06-07 | Delbag-Luftfilter Gmbh, 1000 Berlin | FOLDED FILTER WITH MOLDED BARS |
-
1980
- 1980-02-29 DE DE19803007756 patent/DE3007756A1/en not_active Withdrawn
-
1981
- 1981-02-26 FR FR8104252A patent/FR2477031A1/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1102705B (en) * | 1953-10-01 | 1961-03-23 | Purolator Products Inc | Process for the production of an exchangeable filter element |
| FR1563990A (en) * | 1968-03-05 | 1969-04-18 | ||
| FR2261041A1 (en) * | 1974-02-18 | 1975-09-12 | Cfea |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0206336A2 (en) * | 1985-06-25 | 1986-12-30 | Nippondenso Co., Ltd. | Filter element |
| EP0206336A3 (en) * | 1985-06-25 | 1987-04-15 | Nippondenso Co., Ltd. | Filter element |
| US4738778A (en) * | 1985-06-25 | 1988-04-19 | Nippon Denso Co., Ltd. | Zig zag filter element |
| US5098767A (en) * | 1989-02-15 | 1992-03-24 | Pall Corporation | Filter device with micropleats and macropleats |
Also Published As
| Publication number | Publication date |
|---|---|
| DE3007756A1 (en) | 1981-10-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |