BE829117R - SEALING DEVICE FOR VERY HIGH EFFICIENCY AIR FILTERS - Google Patents

SEALING DEVICE FOR VERY HIGH EFFICIENCY AIR FILTERS

Info

Publication number
BE829117R
BE829117R BE156385A BE156385A BE829117R BE 829117 R BE829117 R BE 829117R BE 156385 A BE156385 A BE 156385A BE 156385 A BE156385 A BE 156385A BE 829117 R BE829117 R BE 829117R
Authority
BE
Belgium
Prior art keywords
sealing device
filter
high efficiency
emi
air filters
Prior art date
Application number
BE156385A
Other languages
French (fr)
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 filed Critical
Priority to BE156385A priority Critical patent/BE829117R/en
Application granted granted Critical
Publication of BE829117R publication Critical patent/BE829117R/en
Priority to DE19767615462 priority patent/DE7615462U1/en
Priority to IT6820676A priority patent/IT1078620B/en
Priority to GB2034676A priority patent/GB1553108A/en

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
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)

Description

       

  : FILTEST SOCIETE ANONYME

  
La présente invention se rapporte à des modifications et à des améliorations apportées au dispositif selon le brevet principal.

  
Ces perfectionnements seront décrits ci-après en se référant aux dessins dans lesquels :  La figure 1 est une vue schématique en coupe d'une installation suivant le perfectionnement. La figure 2 est une vue de détail montrant les possibilités de fuite. 

  
Sur les dessins ci-joints on a représenté, tout comme dans le brevet principal, en 1 le cadre rectangulaire qui fait partie du filtre absolu, en 2 le caisson dans lequel le filtre est installé et en 8 le préfiltre.

  
L'invention concerne une forme de réalisation dans laquelle le filtre 1 à très haute efficacité est installé contre une bride 5<1> qui se trouve en aval du filtre et non en amont, avec interposition d'un joint 3<1>.

  
Conformément à la présente invention, la zone Pb de faible pression est créée en interposant un caisson 18 entre le ventilateur 7 et le filtre 1 lequel est pourvu de deux joints, l'un 31 sur la face aval et l'autre 3 <2> sur la face amont.

  
Le ventilateur 7 est monté sur la face amont du caisson 18 lequel- constitue un plénum en surpression

  
et est serré contre le filtre 1 par un moyen approprié tel que ressorts, vis, boulons,- etc...

  
La bride 5<1> peut être creuse mais ne doit pas l'être nécessairement dans cette réalisation étant donné que la mise en dépression de la zone se trouvant en amont de la

  
 <EMI ID=1.1> 

  
On a donc comme dans le brevet principal la relation :

  
Pb (pression d'aspiration) &#65533; Pa (pression atmosphérique) &#65533; Pc (pression de pulsion) et toute fuite d'air by-passant les joints 3<1> et 32 se produit d'aval en

  
 <EMI ID=2.1> 

  
On a donc réalisé dans le cas présent un dispositif dans lequel une zone de faible pression atmosphérique par rapport à la pression régnant aussi bien en amont qu'en aval du filtre est créée à tous les endroits où une fuite d'air non filtré est à craindre de telle manière que toutes



  : ANONYMOUS COMPANY FILTEST

  
The present invention relates to modifications and improvements made to the device according to the main patent.

  
These improvements will be described below with reference to the drawings in which: FIG. 1 is a schematic sectional view of an installation according to the improvement. FIG. 2 is a detail view showing the possibilities of leakage.

  
In the accompanying drawings there is shown, as in the main patent, at 1 the rectangular frame which is part of the absolute filter, at 2 the box in which the filter is installed and at 8 the prefilter.

  
The invention relates to an embodiment in which the very high efficiency filter 1 is installed against a flange 5 <1> which is located downstream of the filter and not upstream, with the interposition of a gasket 3 <1>.

  
According to the present invention, the low pressure zone Pb is created by interposing a box 18 between the fan 7 and the filter 1 which is provided with two seals, one 31 on the downstream face and the other 3 <2> on the upstream face.

  
The fan 7 is mounted on the upstream face of the box 18 which constitutes an overpressure plenum

  
and is clamped against filter 1 by suitable means such as springs, screws, bolts, - etc ...

  
The flange 5 <1> may be hollow but does not necessarily have to be so in this embodiment given that the depressurization of the area located upstream of the

  
 <EMI ID = 1.1>

  
As in the main patent, we therefore have the relation:

  
Pb (suction pressure) &#65533; Pa (atmospheric pressure) &#65533; Pc (supply pressure) and any air leak bypassing seals 3 <1> and 32 occurs from downstream to

  
 <EMI ID = 2.1>

  
In the present case, therefore, a device has been produced in which a zone of low atmospheric pressure relative to the pressure prevailing both upstream and downstream of the filter is created at all the places where an unfiltered air leak is at risk. fear in such a way that all

Claims (1)

les fuites seront ou se produiront d'aval en amont sans contaminer l'air filtré. leaks will or will occur from downstream to upstream without contaminating the filtered air. REVENDICATIONS. CLAIMS. 1. Dispositif d'étanchéité pour filtres à air à très haute efficacité suivant le brevet principal 1. Sealing device for very high efficiency air filters according to the main patent No. 823.975 du 30 décembre 1974,caractérisé en ce que dans <EMI ID=3.1> No. 823.975 of December 30, 1974, characterized in that in <EMI ID = 3.1> qui se trouve en aval du filtre, la zone (Pb) de faible pression est créée en interposant un caisson (18) entre le ventilateur (7) et le filtre (1) lequel est pourvu de which is downstream from the filter, the low pressure zone (Pb) is created by interposing a box (18) between the fan (7) and the filter (1) which is provided with <EMI ID=4.1> <EMI ID = 4.1> la face amont. the upstream face. 2. Dispositif d'étanchéité suivant la revendication 1, caractérisé en ce que le ventilateur (7) est monté sur la face amont d'un caisson (18) lequel constitue un plenum en surpression et est serré contre le filtre (1) par un moyen approprié tel que ressorts, vis, boulons, etc... 2. Sealing device according to claim 1, characterized in that the fan (7) is mounted on the upstream face of a box (18) which constitutes an overpressure plenum and is clamped against the filter (1) by a suitable means such as springs, screws, bolts, etc. 3. Dispositif d'étanchéité suivant les revendications 1 et 2, caractérisé en ce que la bride d'étanchéité peut être creuse mais ne doit pas l'être nécessaire- 3. Sealing device according to claims 1 and 2, characterized in that the sealing flange may be hollow but need not be necessary- <EMI ID=5.1> <EMI ID = 5.1>
BE156385A 1975-05-15 1975-05-15 SEALING DEVICE FOR VERY HIGH EFFICIENCY AIR FILTERS BE829117R (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
BE156385A BE829117R (en) 1975-05-15 1975-05-15 SEALING DEVICE FOR VERY HIGH EFFICIENCY AIR FILTERS
DE19767615462 DE7615462U1 (en) 1975-05-15 1976-05-15 DEVICE FOR SEALING AIR FILTERS
IT6820676A IT1078620B (en) 1975-05-15 1976-05-17 SEALING DEVICE FOR HIGH PERFORMANCE AIR FILTERS PARTICULARLY AIR DISCHARGE FILTERS CONTAMINATED BY AN ENVIRONMENT
GB2034676A GB1553108A (en) 1975-05-15 1976-05-17 Filtering devices

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE829117 1975-05-15
BE156385A BE829117R (en) 1975-05-15 1975-05-15 SEALING DEVICE FOR VERY HIGH EFFICIENCY AIR FILTERS

Publications (1)

Publication Number Publication Date
BE829117R true BE829117R (en) 1975-09-01

Family

ID=25648598

Family Applications (1)

Application Number Title Priority Date Filing Date
BE156385A BE829117R (en) 1975-05-15 1975-05-15 SEALING DEVICE FOR VERY HIGH EFFICIENCY AIR FILTERS

Country Status (1)

Country Link
BE (1) BE829117R (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0445996A1 (en) * 1990-03-03 1991-09-11 Aire Environmental Limited Improvements in air purification systems

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0445996A1 (en) * 1990-03-03 1991-09-11 Aire Environmental Limited Improvements in air purification systems

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