DE965012C - HEPA filters made of paper, cardboard or the like for breathing apparatus - Google Patents

HEPA filters made of paper, cardboard or the like for breathing apparatus

Info

Publication number
DE965012C
DE965012C DEA17810A DEA0017810A DE965012C DE 965012 C DE965012 C DE 965012C DE A17810 A DEA17810 A DE A17810A DE A0017810 A DEA0017810 A DE A0017810A DE 965012 C DE965012 C DE 965012C
Authority
DE
Germany
Prior art keywords
filter
strip
cardboard
housing
paper
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
Application number
DEA17810A
Other languages
German (de)
Inventor
Dr Walter Lemcke
Wolfgang Pankarz
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.)
Auergesellschaft GmbH
Original Assignee
Auergesellschaft 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 to NL90205D priority Critical patent/NL90205C/xx
Application filed by Auergesellschaft GmbH filed Critical Auergesellschaft GmbH
Priority to DEA17810A priority patent/DE965012C/en
Application granted granted Critical
Publication of DE965012C publication Critical patent/DE965012C/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D46/00Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/0084Filters or filtering processes specially modified for separating dispersed particles from gases or vapours provided with safety means
    • B01D46/0091Including arrangements for environmental or personal protection
    • AHUMAN NECESSITIES
    • A62LIFE-SAVING; FIRE-FIGHTING
    • A62BDEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B23/00Filters for breathing-protection purposes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D39/00Filtering material for liquid or gaseous fluids
    • B01D39/14Other self-supporting filtering material ; Other filtering material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D46/00Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/0002Casings; Housings; Frame constructions
    • B01D46/0005Mounting of filtering elements within casings, housings or frames
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D46/00Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/10Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D46/00Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/52Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material
    • B01D46/521Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material using folded, pleated material
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/28Arrangement or mounting of filters

Description

Die Erfindung betrifft ein Schwebstoffilter für Atemschutzgeräte, das aus Papier, Karton od. dgl. besteht, geradlinig parallele Falten aufweist und mit einem das Faltengebilde umgebenden, luftdichten Außenmantel versehen ist. The invention relates to a particulate filter for breathing apparatus, made of paper, cardboard or the like. Has straight parallel folds and is provided with an airtight outer jacket surrounding the fold formation.

Derartige Filter sind bisher so hergestellt worden, daß die gefaltete Filterschicht zwischen zwei Formkerne eingesetzt wurde, aus denen ein schmaler Rand der gefalteten Filterschicht ringsherum nach außen hervorragte. Das so zustande kommende Gebilde wurde in eine Hohlform eingesetzt und der zwischen den Formkernen und der Hohlform gebildete Raum mit einer flüssigen oder halbflüssigen Kunstharzmasse ausgefüllt. Die Masse wurde dann in der in der Kunststofftechnik üblichen Weise verfestigt. Such filters have been made so that the pleated Filter sheet was inserted between two mold cores, from which a narrow edge the folded filter layer protruded all around to the outside. That came about The next structure was placed in a hollow mold and the one between the mold cores and the cavity formed with a liquid or semi-liquid synthetic resin composition filled out. The mass was then made in the usual way in plastics engineering solidified.

Eine solche Herstellung des Filter ist mit verhältnismäßig hohen Kosten für die Fertigungseinrichtung verbunden und bedingt eine teure und umständliche Fabrikation. Such a production of the filter is relatively high Costs associated with the manufacturing facility and required an expensive and cumbersome Fabrication.

Besondere Schwierigkeiten treten dann auf, wenn Filter dieser Art in Abmessungen hergestellt werden sollen, die sie zum Einbau in Schutzraumfilter geeignet machen. Particular difficulties arise when filters of this type are to be manufactured in dimensions that allow them to be installed in shelter filters make suitable.

Eine weitere Schwierigkeit bildet die Befestigung des Schwebstoffilters im Filtergehäuse der Gesamtfilteranordnung, in der neben dem Schwebstoffilter noch gasbindende, körnige Massen enthalten sind. Another difficulty is the attachment of the particulate filter in the filter housing of the overall filter arrangement, in the next to the HEPA filter gas-binding, granular masses are included.

Demgegenüber besteht die Erfindung darin, daß bei dem Faltenfilter die Faltenenden, welche aus dem Formkern herausragen, nach der Richtung der längsten Falte hin umgelegt sind, derart, daß in diesem Zustand jedes Faltenende die benachbarte Falte überdeckt, und daß mittels eines Klebstoffes, z. B. Latex, ein dehnbarer Streifen so um das Faltengebilde herumgeklebt ist, daß ein schwebstoffdichter Mantel entsteht. In contrast, the invention consists in that in the pleated filter the ends of the folds protruding from the mandrel in the direction of the longest The folds are folded over in such a way that in this state each end of the fold is the adjacent one Crease covered, and that by means of an adhesive, for. B. Latex, a stretchable strip is glued around the fold formation that a suspended matter-proof jacket is formed.

Zur Schaffung eines gas- oder zumindest schwebstoffdichten Anschlusses des Faltenfilters an das Filtergehäuse empfiehlt es sich, den dehnbaren, schwebstoffdichten Streifen so breit zu machen, daß er die Höhe des Faltenfilters so weit überragt, daß der überstehende Teil des Streifens zum Einbau des Faltengebildes in das Filtergehäuse benutzt werden kann. Zu diesem Zweck ist der überstehende Rand des Streifens nach außen umgebogen und stellt ein flanschartiges Anschlußglied dar, das durch Einquetschung zwischen Gehäuserand und Gehäusedeckel die Befestigung des Schwebstofffilters im Gesamtfilter vermittelt. To create a gas-tight or at least suspended matter-tight connection of the pleated filter to the filter housing, it is advisable to use the stretchable, suspended matter-proof To make the strip so wide that it protrudes so far above the height of the pleated filter, that the protruding part of the strip for installing the fold structure in the filter housing can be used. For this purpose, the protruding edge of the strip is after bent on the outside and represents a flange-like connecting member that is squeezed between the edge of the housing and the housing cover, the attachment of the particulate filter in the Overall filter conveyed.

Es empfiehlt sich weiterhin, um den dehnbaren Streifen herum noch einen mechanisch festen Streifen aus Pappe, Preßspan od. dgl. anzuordnen und ihn z. B. um den dehnbaren Streifen herumzukleben. Auf diese Weise wird ein gegen Verwinden weitgehend gesichertes Gebilde geschaffen, das man im Lager stapeln kann, um es bei Bedarf in Filtergehäuse einzubauen. It is still a good idea to keep the stretchable strip around a mechanically strong strip of cardboard, pressboard or the like. To arrange and him z. B. to glue around the stretchable strip. This way one becomes against twisting largely secured structure created that can be stacked around it in the warehouse to be installed in the filter housing if required.

Die Zeichnung zeigt ein Ausführungsbeispiel der Erfindung. The drawing shows an embodiment of the invention.

Abb. I ist eine Ansicht auf ein fertiges. Filter von oben; Abb. 2 stellt einen senkrechten Teilschnitt quer durch die Falten dar, und Abb. 3 ist der gleiche Schnitt wie Abb. 2, bei dem der dehnbare Streifen in der flanschartigen Umbiegung dargestellt ist. Fig. I is a view of a finished one. Filter from above; Fig. 2 Figure 3 is a partial vertical section across the folds and Figure 3 is that same section as Fig. 2, in which the stretchable strip in the flange-like Bend is shown.

Die Abb. I zeigt aus der Art der neuen Herstellung, daß die Enden I der Falten 2 nach der Richtung der längsten Falte des Filters umgebogen sind, so daß sie die benachbarte Falte berühren oder überdecken, und daß in der Randpartie bereits ein flächenhafter Abschluß der Falten gebildet ist. Fig. I shows from the manner of the new manufacture that the ends I of the folds 2 are bent in the direction of the longest fold of the filter, so that they touch or cover the adjacent fold, and that in the edge area an extensive closure of the folds is already formed.

Diese Umfläche des Faltengebildes ist, wie die Abb. 2 zeigt, mit dem dehnbaren Streifen 3 mittels eines Klebstoffes umklebt. Der obere Teil 4 des Streifens 3 ragt über das Faltengebilde so weit hinaus, daß er sich, wie in der Abb. 3 dargestellt, flanschartig umbiegen läßt und dadurch das Anschluß glied zum Filtergehäuse darstellt.This area around the fold structure is, as Fig. 2 shows, with the stretchable strip 3 glued by means of an adhesive. The upper part 4 of the strip 3 protrudes so far beyond the fold structure that it is, as shown in Fig. 3, Can be bent like a flange and thereby represents the connection member to the filter housing.

Zur Versteifung des Schwebstoffilters ist um den dehnbaren Streifen 3 noch ein fester Streifen 5 herumgekleht, der das Filter vor Verwinden sichert und es stapelfähig macht. To stiffen the particulate filter is around the stretchable strip 3 another firm strip 5 glued around, which secures the filter from twisting and makes it stackable.

PATENTANSPROCHE: I. Schwebstoffilter aus Papier, Karton od. dgl. mit geradlinig parallelen Falten und einem das Faltengebilde umgebenden, luftdichten Außenmantel für Atemschutzgeräte, dadurch gekennzeichnet, daß die Faltenenden nach der Richtung der längsten Falte hin umgelegt sind, so daß jedes Faltenende ein benachbartes Faltenende überdeckt, und daß mittels eines Klebstoffes ein dehnbarer Streifen um das Faltengebilde herumgeklebt ist, so daß ein schwebstoffdichter Mantel entsteht. PATENT APPROACH: I. HEPA filters made of paper, cardboard or the like. with straight, parallel folds and an airtight structure surrounding the folds Outer jacket for breathing apparatus, characterized in that the fold ends after are folded in the direction of the longest fold, so that each end of the fold is an adjacent Wrinkle ends covered, and that by means of an adhesive around a stretchable strip the fold structure is glued around, so that a suspended matter-proof jacket is formed.

Claims (1)

2. Schwebstoffilter nach Anspruch I, dadurch gekennzeichnet, daß der dehnbare schwebstoffdichte Streifen die Höhe des Faltenfilters so weit überragt, daß der überstehende Teil zum Einbau des Faltengebildes in ein Filtergehäuse benutzt werden kann. 2. HEPA filter according to claim I, characterized in that the stretchable strip, which is impervious to suspended matter, extends beyond the height of the pleated filter that the protruding part is used to install the fold structure in a filter housing can be. 3. Schwebstoffilter nach Anspruch 2, dadurch gekennzeichnet, daß der überstehende Rand des dehnbaren Streifens nach außen umgebogen ist und durch Einquetschung zwischen Gehäuserand und Gehäusedeckel die Befestigung für das Schwebstoffilter im Filtergehäuse bildet. 3. HEPA filter according to claim 2, characterized in that the protruding edge of the stretchable strip is bent outwards and through The attachment for the particulate filter is squeezed between the edge of the housing and the housing cover forms in the filter housing. 4. Schwebstoffilter nach einem der Ansprüche I bis 3, dadurch gekennzeichnet, daß um den dehnbaren Streifen herum noch ein mechanisch fester Streifen aus Pappe, Preßspan od. dgl. angeordnet und daran befestigt ist, so daß ein gegen Verwinden weitgehend gesichertes, stapelbares Gebilde entsteht. 4. HEPA filter according to one of claims I to 3, characterized in that that around the stretchable strip there is a mechanically strong strip of cardboard, Pressboard or the like. Is arranged and attached to it, so that one against twisting A largely secured, stackable structure is created.
DEA17810A 1953-04-16 1953-04-16 HEPA filters made of paper, cardboard or the like for breathing apparatus Expired DE965012C (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
NL90205D NL90205C (en) 1953-04-16
DEA17810A DE965012C (en) 1953-04-16 1953-04-16 HEPA filters made of paper, cardboard or the like for breathing apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEA17810A DE965012C (en) 1953-04-16 1953-04-16 HEPA filters made of paper, cardboard or the like for breathing apparatus

Publications (1)

Publication Number Publication Date
DE965012C true DE965012C (en) 1957-05-29

Family

ID=6923986

Family Applications (1)

Application Number Title Priority Date Filing Date
DEA17810A Expired DE965012C (en) 1953-04-16 1953-04-16 HEPA filters made of paper, cardboard or the like for breathing apparatus

Country Status (2)

Country Link
DE (1) DE965012C (en)
NL (1) NL90205C (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1278253B (en) * 1966-12-24 1968-09-19 Draegerwerk Ag Method and device for the manufacture of a jacket enclosing a particulate filter insert for respiratory protection devices
DE3007757A1 (en) * 1980-02-29 1981-09-24 Drägerwerk AG, 2400 Lübeck METHOD FOR PRODUCING FILTER ELEMENTS FROM FILTER PAPER
DE4002078C1 (en) * 1990-01-25 1991-05-02 Fa. Carl Freudenberg, 6940 Weinheim, De
DE4430333A1 (en) * 1994-08-29 1996-03-07 Mann & Hummel Filter filter
DE4039286C2 (en) * 1990-12-08 2000-11-23 Mahle Filtersysteme Gmbh Plate-shaped filter insert for gas filters in particular
DE19503024C5 (en) * 1994-02-02 2006-12-21 Delphi Energy And Engine Management Systems Uk Overseas Corp. (N.D.Ges.D. Staates Delaware), Detroit air filter
DE202007011586U1 (en) * 2007-08-17 2009-01-02 Mann+Hummel Gmbh filter element

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1278253B (en) * 1966-12-24 1968-09-19 Draegerwerk Ag Method and device for the manufacture of a jacket enclosing a particulate filter insert for respiratory protection devices
DE3007757A1 (en) * 1980-02-29 1981-09-24 Drägerwerk AG, 2400 Lübeck METHOD FOR PRODUCING FILTER ELEMENTS FROM FILTER PAPER
DE4002078C1 (en) * 1990-01-25 1991-05-02 Fa. Carl Freudenberg, 6940 Weinheim, De
US5167740A (en) * 1990-01-25 1992-12-01 Carl Freudenberg Method of making a filter insert of nonwoven material in the form of a pleated pack
EP0438639B1 (en) * 1990-01-25 1994-01-12 Firma Carl Freudenberg Production method of a corrugated filter element made of fibre fleece
DE4039286C2 (en) * 1990-12-08 2000-11-23 Mahle Filtersysteme Gmbh Plate-shaped filter insert for gas filters in particular
DE19503024C5 (en) * 1994-02-02 2006-12-21 Delphi Energy And Engine Management Systems Uk Overseas Corp. (N.D.Ges.D. Staates Delaware), Detroit air filter
EP0705634A1 (en) * 1994-08-29 1996-04-10 FILTERWERK MANN & HUMMEL GMBH Filter
US5620505A (en) * 1994-08-29 1997-04-15 Filterwerk Mann & Hummel Gmbh Filter
DE4430333C2 (en) * 1994-08-29 2000-02-17 Mann & Hummel Filter filter
DE4430333A1 (en) * 1994-08-29 1996-03-07 Mann & Hummel Filter filter
KR100355370B1 (en) * 1994-08-29 2002-12-11 필터벨크 만 운트 훔멜 게엠베하 filter
DE202007011586U1 (en) * 2007-08-17 2009-01-02 Mann+Hummel Gmbh filter element

Also Published As

Publication number Publication date
NL90205C (en)

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