DE1135299B - Filter for respiratory protection devices or the like with a grainy filter material and a transparent filter housing - Google Patents

Filter for respiratory protection devices or the like with a grainy filter material and a transparent filter housing

Info

Publication number
DE1135299B
DE1135299B DEST9249A DEST009249A DE1135299B DE 1135299 B DE1135299 B DE 1135299B DE ST9249 A DEST9249 A DE ST9249A DE ST009249 A DEST009249 A DE ST009249A DE 1135299 B DE1135299 B DE 1135299B
Authority
DE
Germany
Prior art keywords
filter
housing
discs
threads
transparent
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
DEST9249A
Other languages
German (de)
Inventor
Dr Hugo Stoltzenberg
Martin Leuschner
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.)
HUGO STOLTZENBERG DR
Original Assignee
HUGO STOLTZENBERG DR
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 HUGO STOLTZENBERG DR filed Critical HUGO STOLTZENBERG DR
Priority to DEST9249A priority Critical patent/DE1135299B/en
Publication of DE1135299B publication Critical patent/DE1135299B/en
Pending 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
    • B01D46/30Particle separators, e.g. dust precipitators, using loose filtering material
    • AHUMAN NECESSITIES
    • A62LIFE-SAVING; FIRE-FIGHTING
    • A62BDEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B23/00Filters for breathing-protection purposes

Description

Filter für Atemschutzgeräte od. dgl. mit körniger Filtermasse und durchsichtigem Filtergehäuse Es ist bekannt, daß die Strömungsgeschwindigkeit eines Gases, das durch die körnige Filtermasse des Filters eines Atemschutzgerätes strömt, an der Filtergehäuseinnenwand und im Bereich der Filtergehäuselängsachse größer ist als im übrigen Filterbereich. In diesen Bereichen bilden sich sogenannte Kurzschlußwege, durch die ungefiltertes Gas schon dann strömt, wenn ein großer Teil der übrigen Filtermasse noch nicht verbraucht ist.Filters for respiratory protective devices or the like with granular filter material and transparent filter housing It is known that the flow rate of a Gas that flows through the granular filter mass of the filter of a respiratory protective device, larger on the inside wall of the filter housing and in the area of the longitudinal axis of the filter housing than in the rest of the filter area. In these areas, so-called short-circuit paths form, through which unfiltered gas already flows when a large part of the rest Filter material has not yet been used up.

Zur Beseitigung dieser Erscheinung sind bereits mehrere Vorschläge bekanntgeworden. So soll bei einem bekannten Filter die Bildung von Kurzschlußwegen dadurch verhindert werden, daß alle platten Wände oder Flächen durch Auftragen eines Klebstoffes und Ausstreuen von gepulverten oder gekörnten Chemikalien aufgerauht werden. Bei einem anderen bekannten Filter mit einem Metallgehäuse soll die Bildung von Kurzschlußwegen an der Gehäuseinnenwand durch die Metallteile des Filters bedeckende, gas- und wasserundurchlässige Pappmassen, die z. B. mit Paraffin getränkt sind, oder durch eine auf die Metallteile aufgebrachte Mischung aus einem klebenden Bindemittel und gemahlenem Zellstoff oder ähnlichen Stoffen verhindert werden. Diese Lösung ist dann nicht geeignet, wenn ein durchsichtiges Filtergehäuse verwendet werden soll, um die Vorgänge im Filter sichtbar zu machen. Several proposals have already been made for eliminating this phenomenon known. In a known filter, for example, short-circuit paths should be formed this prevents all flat walls or surfaces by applying a Glue and sprinkling powdered or granulated chemicals roughened will. In another known filter with a metal housing, the formation of short-circuit paths on the inside wall of the housing through the metal parts of the filter, gas- and water-impermeable cardboard, which z. B. are soaked with paraffin, or by a mixture of an adhesive binder applied to the metal parts and ground pulp or similar substances can be prevented. This solution is not suitable if a clear filter housing is used to make the processes in the filter visible.

Es ist ferner bekannt, bei Schwebstoffiltern zum Vergrößern des Durchströmwiderstandes an der Gehäusewand die an der Gehäusewand anliegende Fasermasse stark zusammenzupressen, so daß sie eine wesentlich größere Dichtheit aufweist als die übrige Filtermasse. Bei diesem Filter geht dadurch ein Teil des Filterraumes verloren. It is also known, in the case of filters for suspended matter, to increase the flow resistance strongly compressing the fiber mass lying on the housing wall on the housing wall, so that it has a much greater tightness than the rest of the filter mass. With this filter part of the filter space is lost.

Die Erfindung bezweckt, bei einem Filter mit körniger Filtermasse und durchsichtigem Filtergehäuse eine gleichmäßige Gasströmung in der gesamten Filtermasse herbeizuführen. The invention aims at a filter with a granular filter mass and transparent filter housing a uniform gas flow in the entire filter mass bring about.

Diese Aufgabe wird nach der Erfindung dadurch gelöst, daß an der Innenseite der Gehäusewand und auf der Gehäuselängsachse des Filters Fäden bzw. This object is achieved according to the invention in that at the Inside of the housing wall and threads or threads on the housing longitudinal axis of the filter.

Scheiben aus flauschigem Fasermaterial in mehreren Schichten übereinander angeordnet sind, die in ihrem Bereich den Luftstrom stauen.Slices of fluffy fiber material in several layers on top of each other are arranged, which stow the air flow in their area.

Das Filter nach der Erfindung hat den Vorteil, daß der gesamte Filterquerschnitt gleichmäßig ausgenutzt wird, weil durch die aus einem teilweise gasdurchlässigen, den Gasstrom nicht völlig ablenkenden Fasermaterial bestehenden Fäden und Scheiben die Strömungsgeschwindigkeit des die Filtermasse durchströmenden Gasstromes ausgeglichen wird, und daß der Verbrauch der Filtermasse beobachtet werden kann. Darüber hinaus wird mit dem Filter nach der Erfindung auch eine Ausbildung von Kurzschlußwegen im Bereich der Gehäuselängsachse verhindert. The filter according to the invention has the advantage that the entire filter cross-section is used evenly, because due to the partially gas-permeable, The fiber material consisting of threads and discs that do not completely deflect the gas flow the flow rate of the gas flow flowing through the filter mass is balanced and that the consumption of the filter mass can be observed can. Furthermore With the filter according to the invention, a formation of short-circuit paths is also possible prevented in the area of the longitudinal axis of the housing.

Als Fasermaterial für die Fäden und Scheiben eignen sich Wolle, Daunen, Kunstfasern, Linters, Asbestgewebe, Glaswolle, Steinwolle oder Metallwolle. Suitable fiber materials for the threads and discs are wool, down, Synthetic fibers, linters, asbestos fabric, glass wool, rock wool or metal wool.

Die genaue Form der Scheiben ist beliebig. Vom Boden des Filtergehäuses aus gesehen, können die Scheiben rund oder oval sein; von der Seite gesehen, können sie eine tellerartige, flache oder gewölbte Form haben. The exact shape of the discs is arbitrary. From the bottom of the filter housing as seen, the disks can be round or oval; seen from the side, can they have a plate-like, flat or curved shape.

Weitere Merkmale der Erfindung sind Gegenstand der Unteransprüche. Further features of the invention are the subject of the subclaims.

In der Zeichnung ist eine Ausführungsform eines Filters nach der Erfindung dargestellt. In the drawing is an embodiment of a filter according to Invention shown.

In dem Filtergehäuse mit der Gehäusewand 1 und der Gehäuseachse 2 sind zwei Fäden 3 und zwei Scheiben 4 angeordnet. Die Scheiben haben einen unterschiedlichen Radius. In the filter housing with the housing wall 1 and the housing axis 2 two threads 3 and two discs 4 are arranged. The discs have a different one Radius.

Claims (4)

PATENTANSPRÜCHE: 1. Filter für Atemschutzgeräte od. dgl. mit körniger Filtermasse und durchsichtigem Filtergehäuse, dadurch gekennzeichnet, daß an der Innenseite der Gehäusewand (1) und auf der Gehäuselängsachse (2) Fäden (3) bzw. Scheiben (4) aus flauschigem Fasermaterial in mehreren Schichten übereinander angeordnet sind, die in ihrem Bereich den Luftstrom stauen. PATENT CLAIMS: 1. Filters for respiratory protective devices or the like with granular Filter mass and transparent filter housing, characterized in that on the Inside of the housing wall (1) and on the housing longitudinal axis (2) threads (3) or Discs (4) made of fluffy fiber material arranged in several layers one above the other that block the air flow in their area. 2. Filter nach Anspruch 1, dadurch gekennzeichnet, daß die Form der Scheiben (4) der Form des Filtergehäuses angepaßt ist. 2. Filter according to claim 1, characterized in that the shape of the Discs (4) is adapted to the shape of the filter housing. 3. Filter nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Fäden (3) und Scheiben (4) lose miteinander verbunden sind. 3. Filter according to claim 1 or 2, characterized in that the Threads (3) and discs (4) are loosely connected to one another. 4. Filter nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Fäden (3) und Scheiben (4) mit Indikatoren, welche den Zustand der Filtermasse anzeigen, imprägniert sind. 4. Filter according to one of claims 1 to 3, characterized in that that the threads (3) and Discs (4) with indicators showing the condition of the filter mass show, are impregnated. In Betracht gezogene Druckschriften: Deutsche Patentschriften Nr. 591 666, 641 281, 648972, 674563; schweizerische Patentschrift Nr. 170239. Considered publications: German Patent Specifications No. 591 666, 641 281, 648972, 674563; Swiss patent specification No. 170239.
DEST9249A 1954-12-30 1954-12-30 Filter for respiratory protection devices or the like with a grainy filter material and a transparent filter housing Pending DE1135299B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEST9249A DE1135299B (en) 1954-12-30 1954-12-30 Filter for respiratory protection devices or the like with a grainy filter material and a transparent filter housing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEST9249A DE1135299B (en) 1954-12-30 1954-12-30 Filter for respiratory protection devices or the like with a grainy filter material and a transparent filter housing

Publications (1)

Publication Number Publication Date
DE1135299B true DE1135299B (en) 1962-08-23

Family

ID=7454715

Family Applications (1)

Application Number Title Priority Date Filing Date
DEST9249A Pending DE1135299B (en) 1954-12-30 1954-12-30 Filter for respiratory protection devices or the like with a grainy filter material and a transparent filter housing

Country Status (1)

Country Link
DE (1) DE1135299B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0042736A1 (en) * 1980-06-20 1981-12-30 Minnesota Mining And Manufacturing Company Cartridge respirator with service life indicator

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE591666C (en) * 1930-08-15 1934-01-25 Draegerwerk Heinr U Berhn Drae Gas filters, in particular breathing filters
CH170239A (en) * 1933-05-15 1934-06-30 Pirelli Gas mask with at least translucent face.
DE641281C (en) * 1931-01-27 1937-01-26 Draegerwerk Heinr U Bernh Drae Respiratory protection filter containing several filter layers arranged one behind the other
DE648972C (en) * 1937-08-12 Draegerwerk Heinr U Bernh Drae Gas filters, in particular respiratory protection filters
DE674563C (en) * 1935-07-14 1939-04-15 Paul Guenther Dr HEPA filter with a filter mass consisting of a loose fiber mass

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE648972C (en) * 1937-08-12 Draegerwerk Heinr U Bernh Drae Gas filters, in particular respiratory protection filters
DE591666C (en) * 1930-08-15 1934-01-25 Draegerwerk Heinr U Berhn Drae Gas filters, in particular breathing filters
DE641281C (en) * 1931-01-27 1937-01-26 Draegerwerk Heinr U Bernh Drae Respiratory protection filter containing several filter layers arranged one behind the other
CH170239A (en) * 1933-05-15 1934-06-30 Pirelli Gas mask with at least translucent face.
DE674563C (en) * 1935-07-14 1939-04-15 Paul Guenther Dr HEPA filter with a filter mass consisting of a loose fiber mass

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0042736A1 (en) * 1980-06-20 1981-12-30 Minnesota Mining And Manufacturing Company Cartridge respirator with service life indicator

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