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 apparatusInfo
- 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
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
- B01D46/0084—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours provided with safety means
- B01D46/0091—Including arrangements for environmental or personal protection
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B23/00—Filters for breathing-protection purposes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering 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
- B01D46/0002—Casings; Housings; Frame constructions
- B01D46/0005—Mounting of filtering elements within casings, housings or frames
-
- 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
- B01D46/52—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
-
- 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)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Toxicology (AREA)
- Combustion & Propulsion (AREA)
- General Health & Medical Sciences (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
- Respiratory Apparatuses And Protective Means (AREA)
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)
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)
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 |
-
0
- NL NL90205D patent/NL90205C/xx active
-
1953
- 1953-04-16 DE DEA17810A patent/DE965012C/en not_active Expired
Cited By (13)
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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