DE2542527A1 - Filter for suspended materials having elastic sealing cpd. - with reduced prodn. costs and time and perfect sealing - Google Patents

Filter for suspended materials having elastic sealing cpd. - with reduced prodn. costs and time and perfect sealing

Info

Publication number
DE2542527A1
DE2542527A1 DE19752542527 DE2542527A DE2542527A1 DE 2542527 A1 DE2542527 A1 DE 2542527A1 DE 19752542527 DE19752542527 DE 19752542527 DE 2542527 A DE2542527 A DE 2542527A DE 2542527 A1 DE2542527 A1 DE 2542527A1
Authority
DE
Germany
Prior art keywords
filter
frame
sealing
cpd
filter material
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.)
Pending
Application number
DE19752542527
Other languages
German (de)
Inventor
Juergen Falk
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.)
Draegerwerk AG and Co KGaA
Original Assignee
Draegerwerk AG and Co KGaA
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 Draegerwerk AG and Co KGaA filed Critical Draegerwerk AG and Co KGaA
Priority to DE19752542527 priority Critical patent/DE2542527A1/en
Publication of DE2542527A1 publication Critical patent/DE2542527A1/en
Pending legal-status Critical Current

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
    • 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
    • B01D2265/00—Casings, housings or mounting for filters specially adapted for separating dispersed particles from gases or vapours
    • B01D2265/04—Permanent measures for connecting different parts of the filter, e.g. welding, glueing or moulding
    • 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

Filter comprises a frame to which the folded filter material is rigidly connected in sealing relationship by an elastic casting cpd. pref. polyurethane-based, which thus form the peripheral seal for the filter material. The filter material may consist of individual filter packages which are connectd to each other by sealing connections e.g. casting cpd. The filter material is held in position while the sealing cpd. is poured in to form walls which extend beyond the filter package into the frame and shorter walls which extend at least as far as the filter packages. The sealing cpd. forms the peripheral seal on the open side of the frame integrally with the walls.

Description

Schwebstoffilter mit Rahmen HEPA filter with frame

Die Erfindung betrifft ein Schwebstoffilter mit Rahmen, in dem das gefaltete Schwebstoffiltermaterial mittels Vergußmasse gehalten wird und umlaufender Dichtung am Rahmen.The invention relates to a HEPA filter with a frame in which the folded HEPA filter material is held by means of potting compound and circulating Seal on the frame.

Die Abdichtung des eingespannten Schwebstoffilters zur Einspannstelle muß gut sein. Die umlaufende Dichtung sollte nicht getrennt von der Abdichtung und Befestigung des Filtermaterials m Rahmen betrachtet werden.The sealing of the clamped particulate filter to the clamping point must be good. The circumferential seal should not be separated from the seal and Attachment of the filter material m frame are considered.

Bei den bekanriten Schwebstoffiltern mit Rahmen ist das in verschiedener Weise gefaltete lviltermateril durch eine geeignete zlergußmasse mit dem Rahmen verbunden. Die Vergußmasse wird in flüssigem Zustand in den entsprechend vorbereiteten Rahmen mit dem Filtermaterial eingegossen.In the case of the well-known HEPA filters with frames, this is different Filter material folded in a way through a suitable cement molding compound with the frame tied together. The potting compound is in the liquid state in the corresponding prepared Frame cast with the filter material.

Nach dem Erhärten slnd der Rahmen und das ilternaterial über die feste Vergußmasse miteinander verhiriden. Zur Abdichtung des Rahmens urid damit des ßchwebstoffilters beim Einbau in die Halterung oder in die Luftleitung dienen elastische Dichtungen, die als Bandmaterial oder auch als Formstück auf die Stirnseite der Rahmen geklebt werden.After hardening, the frame and the filter material are over the solid Avoid sealing compound with one another. To seal the frame and thus the floating material filter when installing in the bracket or in the air duct, elastic seals are used, which are glued as tape material or as a molded piece to the front of the frame will.

Neben der zusätzlichen Arbeit des Aufklebens der Dichtungen und der verschiedenen Materialien der Vergußmasse und der Dichtungen besteht immer wieder die Gefahr einer unerkannten Ilndichtigkeit, wenn sich z.B. während des Betriebes, sei es durch Rüttelbeanspruchungen oder auch nach Alterung, die Vergußmasse vom Rahmen löst. Es kann dann unfiltrierte Luft praktisch -im Nebenstrom an dem gefaltetem Filtermaterial vorbeiströmen.In addition to the extra work of gluing the seals and the different materials of the potting compound and the seals exists again and again the risk of undetected leakage if, for example, during operation, be it due to vibration or aging, the casting compound from Frame loosens. It can then practically unfiltered air - in a bypass to the folded Filter material flow past.

Bei einem bekannten Schwebstoffilter für Atemschutzgeräte mit einer quer zur Strömungsrichtung gefältelten Filterschicht und einem die gefältelte Filterschicht seitlich umschließenden Mantel besteht dieser aus einer Klebemasse, die zu einer luftdichten, geschmeidigen haut erhärtet. Der Mantel ist mit einem Flansch zum Einsetzen des Schwebstofffilters in das Piltergehäuse versehen. Er besitzt also mit dem Flansch aus dem gleichen geschmeidigen Material eine umlaufende Dichtung. Dies bekannte Schwebstoffilter ist nur klein, es besitzt keinen selbsttagenden Rahmen. Zur Benutzung wird es in ein Gehäuse eingesetzt. Die Gefahr der Undichtigkeit zwischen Vergußmasse und Rahmen besteht, weil sie den Rahmen nicht besitzen, bei diesen kleinen Lviltcrn nicht. l.s kann daher direkt gar nicht mit den oben genannten Schwebstoffiltern mit Rahmen verglichen werden.In a known particulate filter for breathing apparatus with a filter layer pleated transversely to the direction of flow and one the pleated filter layer Laterally enclosing jacket consists of an adhesive that becomes a airtight, supple skin hardened. The jacket has a flange for insertion of the particulate filter in the pilter housing. So he owns with the flange A circumferential seal made of the same flexible material. Known this HEPA filter is only small, it does not have a self-sustaining one Frame. For use, it is placed in a housing. The risk of leaks exists between potting compound and frame because they do not have the frame not this little lamp. l.s can therefore not directly with the above HEPA filters can be compared with frames.

(DT-Po 900 417).(DT-Po 900 417).

Der Erfindung liegt die Aufgabe zugrunde, jede Gefahr einer möglichen Undichtigkeit durch vom Rahmen abgelöste Yergußmasse auszuschalten und darüber hinaus eine wirtschaftliche Herstellung zu ermöglichen.The invention is based on the object of any possible risk Eliminate leakage by casting compound detached from the frame and beyond to enable economical production.

Die Erfindung besteht darin, daß eine elastische Vergußmasse das Schwebstoffiltermaterial mit dem Rahmen fest und dicht verbindet und dazu einstückig die umlaufende Dichtung bildet.The invention consists in the fact that an elastic potting compound is used to filter the suspended matter firmly and tightly connected to the frame and integrally with the circumferential seal forms.

Die mit dieser Erfindung erzielten Vorteile bestehen eindeutig darin, daß durch die einstückige Verbindung des Filtermaterials und der Dichtungen dichtungsmäßig betrachtet praktisch ein Körper entstanden ist, der dann seine Steifigkeit in dem Rahmen erhält. Mit diesem ist er durch die beim Festwerden gleichzeitig entstehende Klebung verblzlden.The advantages achieved with this invention are clearly: that by the one-piece connection of the filter material and the seals in a seal-like manner considered practically a body has arisen, which then its rigidity in the Frame receives. With this it is through the simultaneously arising when solidifying Pad the bond.

Es ist einleuchtend, daß die lierstellung zeitsparend ist.It is evident that the position is time-saving.

Die umlaufenden Dichtungen müssen nicht zusätzlich, wie bisher bei den bekannten Ausführungen üblich, beschafft oder hergestellt und in einem gesonderten Arbeitsgang angeklebt werden.The circumferential seals do not have to be added, as was previously the case with the known designs common, procured or manufactured and in a separate Operation to be glued.

In Ausgestaltung der Erfindung beruht das Material der elastischen Vergußmasse auf einer Polyurethan-Basis.In an embodiment of the invention, the material is based on the elastic Potting compound on a polyurethane basis.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird im folgenden beschreiben. Es zeigen Fig. 1 einen Schnitt mit Draufsicht auf das gefaltete Filtermaterial, Fig. 2 einen Schnitt, dazu um 900 axial gedreht.An embodiment of the invention is shown in the drawing and is described below. 1 shows a section with a top view onto the folded filter material, FIG. 2 shows a section, rotated axially by 900 for this purpose.

Der Filterrahmen 1 aus Holz, Metall usw. besitzt vier umlaufende Seiten, nach den Seiten 2 und 3 ist er offen.The filter frame 1 made of wood, metal, etc. has four circumferential sides, on pages 2 and 3 it is open.

Das Filtermaterial 4 besteht aus einzelnen Filterpaketen 5, die durch dichte Verbindungen 6 und 7, z.B. einer Vergußmasse, miteinander verbunden sind. Das Filtermaterial 4 wurdein den t'ilterrahmen 1 eingebracht und dort bis zum T.ingicßen der Vcrgußmasse durch geeignete Vorrichtungen gehalten. Die elastische Vergußmasse 8 wurde in flüssuper Porm eingegossen. Sie bildet dabei die Wände 9 und 10, die, wie Fig. 2 zeigt, bis über die Faltenpakete 5 hinaus, in den Filterrahmen 1 hineinreichen und die kürzeren Wände 11 und 12, die mindestens bis an die Faltenpakete 5 reichen. Sie gehen an dieser Stelle mit den Verbindungen 7 eine dichte Verbindung ein. Die elastische Vergußmasse 8 bildet einstückig mit den Wänden 9 bis 12 direkt auf der offenen Rahmenseite 2 die umlaufende Dichtung 15. Es ist zusätzlich möglich, eine gleiche umlauSende Dichtung auf der gegenüberliegenden Seite vorzusehen.The filter material 4 consists of individual filter packs 5, which through tight connections 6 and 7, e.g. a potting compound, are connected to one another. The filter material 4 was introduced into the filter frame 1 and there up to the point of injection the casting compound held by suitable devices. The elastic casting compound 8 was in liquid Porm poured. It forms the walls 9 and 10, which, as FIG. 2 shows, extend beyond the fold packages 5 into the filter frame 1 and the shorter walls 11 and 12, which at least up to the packets of folds 5 range. At this point you have a tight connection with the connections 7 a. The elastic casting compound 8 forms in one piece with the walls 9 to 12 directly the circumferential seal 15 on the open frame side 2. It is also possible to Provide an identical circumferential seal on the opposite side.

Wie auf den Figuren deutlich erkennbar, bildet die elastische Vergußmasse mit den Wänden 9 bis 12 und der umlauSenden Dichtung 13 ein Bauteil. Eine Undichtigkeit zwischen der Dichtung und dem Rahmen führt nicht zu einem Kurzschluß mit unfiltrierter Luft, die in Pfeilrichtung 14 das Schwebstoffilter anströmt.As can be clearly seen in the figures, the elastic casting compound forms with the walls 9 to 12 and the surrounding seal 13 one component. A leak between the seal and the frame does not lead to a short circuit with unfiltered Air flowing towards the particulate filter in the direction of arrow 14.

Claims (1)

Patentan sprüche 1. Schwebstoffilter mit Rahmen, in dem das gefaltete Schwebstoffiltermaterial mittels Vergußmasse gehalten wird und umlaufender Dichtung am Rahmen, dadurch gekennzeichnet, daß eine elastische Vergußmasse (8) das Schwebstoffiltermaterial (4) mit dem Rahmen (1) fest und dicht verbindet und dazu einstückig die umlaufende Dichtung (1,) bildet. Patent claims 1. HEPA filter with frame in which the folded HEPA filter material is held by means of potting compound and a circumferential seal on the frame, characterized in that an elastic casting compound (8) removes the particulate filter material (4) connects firmly and tightly to the frame (1) and integrally with the circumferential Seal (1,) forms. ?. Schwebstoffilter mit Rahmen nach Anspruch 1, dadurch gekennzeichnet, daß das Material der elastischen Vergußmasse (8) auf einer Polyurethan-Basis beruht.?. HEPA filter with frame according to Claim 1, characterized in that that the material of the elastic casting compound (8) is based on a polyurethane.
DE19752542527 1975-09-24 1975-09-24 Filter for suspended materials having elastic sealing cpd. - with reduced prodn. costs and time and perfect sealing Pending DE2542527A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19752542527 DE2542527A1 (en) 1975-09-24 1975-09-24 Filter for suspended materials having elastic sealing cpd. - with reduced prodn. costs and time and perfect sealing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19752542527 DE2542527A1 (en) 1975-09-24 1975-09-24 Filter for suspended materials having elastic sealing cpd. - with reduced prodn. costs and time and perfect sealing

Publications (1)

Publication Number Publication Date
DE2542527A1 true DE2542527A1 (en) 1977-04-14

Family

ID=5957247

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19752542527 Pending DE2542527A1 (en) 1975-09-24 1975-09-24 Filter for suspended materials having elastic sealing cpd. - with reduced prodn. costs and time and perfect sealing

Country Status (1)

Country Link
DE (1) DE2542527A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1988003833A1 (en) * 1986-11-17 1988-06-02 Flodins Filter Ab Process for the production of filters, and a filter produced by the process
DE4032234A1 (en) * 1990-10-11 1992-04-16 Kottwitz Max Anton Dipl Ing Di Gas purifying filter device - with filter bed contg. support bodies to prevent settling
DE10102100A1 (en) * 2001-01-18 2002-07-25 Mhb Filtration Gmbh & Co Kg Filter element, used for filtering air in vehicle air conditioning unit, has a filter material made from individual segments separated from each other

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1988003833A1 (en) * 1986-11-17 1988-06-02 Flodins Filter Ab Process for the production of filters, and a filter produced by the process
DE4032234A1 (en) * 1990-10-11 1992-04-16 Kottwitz Max Anton Dipl Ing Di Gas purifying filter device - with filter bed contg. support bodies to prevent settling
DE10102100A1 (en) * 2001-01-18 2002-07-25 Mhb Filtration Gmbh & Co Kg Filter element, used for filtering air in vehicle air conditioning unit, has a filter material made from individual segments separated from each other

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