DE712683C - Filters for breathing purposes - Google Patents

Filters for breathing purposes

Info

Publication number
DE712683C
DE712683C DED66708D DED0066708D DE712683C DE 712683 C DE712683 C DE 712683C DE D66708 D DED66708 D DE D66708D DE D0066708 D DED0066708 D DE D0066708D DE 712683 C DE712683 C DE 712683C
Authority
DE
Germany
Prior art keywords
filter
filters
breathing purposes
breathing
suspended
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
DED66708D
Other languages
German (de)
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.)
BERNH DRAEGER
Draegerwerk AG and Co KGaA
Original Assignee
BERNH DRAEGER
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 BERNH DRAEGER, Draegerwerk AG and Co KGaA filed Critical BERNH DRAEGER
Priority to DED66708D priority Critical patent/DE712683C/en
Application granted granted Critical
Publication of DE712683C publication Critical patent/DE712683C/en
Expired legal-status Critical Current

Links

Classifications

    • AHUMAN NECESSITIES
    • A62LIFE-SAVING; FIRE-FIGHTING
    • A62BDEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B19/00Cartridges with absorbing substances for respiratory apparatus
    • AHUMAN NECESSITIES
    • A62LIFE-SAVING; FIRE-FIGHTING
    • A62BDEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B21/00Devices for producing oxygen from chemical substances for respiratory apparatus

Landscapes

  • Health & Medical Sciences (AREA)
  • Pulmonology (AREA)
  • General Health & Medical Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Emergency Medicine (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)

Description

Filter für Atemzwecke Die Erfindung betrifft ein Filter für Atemzwecke und besteht darin, daß das Filter, gegebenenfalls neben andersartigen Filterschichten, eine aus - tierischen, pflanzlichen oder mineralischenFasern bestehende Schwebstoffilterschicht aufweist, die stabilisierte Abkömmlinge des Wasserstoffsuperoxyds oder der Alkaliperoxyde, insbesondere Percarbonate oder Perborate, enthält.Filters for breathing purposes The invention relates to a filter for breathing purposes and consists in the fact that the filter, possibly in addition to other types of filter layers, a suspended matter filter layer made of animal, vegetable or mineral fibers the stabilized derivatives of hydrogen peroxide or alkali peroxides, in particular percarbonates or perborates.

Dadurch wird ein Schwebstoffilter geschaffen, das nicht nur mechanisch Schwebstoffe zurückhält, sondern die Schwebstoffe auch gleichzeitig chemisch verändert und unwirksam macht, so daß das Schwebstoffilter weitporiger sein kann und dem Durchgang der Atemluft einen erheblich geringeren Widerstand als die üblichen Schwebstoffilter entgegensetzt. Die Schwebstoffe werden also größtenteils mechanisch zurückgehalten, und diejenigen Teilchen, die der mechanischen Zurückhaltung entgehen, werdenchem'schzerstört.This creates a particulate filter that is not just mechanical Retains suspended solids, but also chemically changes the suspended solids at the same time and makes it ineffective, so that the HEPA filter can have more pores and the passage the breathing air has a significantly lower resistance than the usual HEPA filters opposed. So the suspended solids are mostly held back mechanically, and those particles which escape mechanical restraint are chemically destroyed.

Das neue Filter ist besonders undurchlässig gegen Schwebstoffe und besitzt namentlich für Blaukreuzkampfstoffe eine gesteigerte Aufnahmefähigkeit.The new filter is particularly impermeable to suspended matter and has an increased absorption capacity for blue cross warfare agents in particular.

Die Filtermasse kann vor, während oder nach ihrer Herstellung mit den ob engenannten oxydierend wirkenden Stoffen behandelt werden. Diese Behandlung kann darin bestehen, daß man die festen oder flüssigen oxydierend wirkenden Stoffe entweder unmittelbar mit den Fasermassen vermischt oder, sie zunächst in Lösung bringt und die Fasermassen dann mit den Lösungen tränkt.The filter mass can be used before, during or after its manufacture the above-mentioned oxidizing substances are treated. This treatment can consist of the solid or liquid oxidizing substances either mixed directly with the fiber masses or, initially in solution brings and then soaks the fiber masses with the solutions.

Man hat schon vorgeschlagen, Schwebstofffilter dadurch herzustellen, daß man in die Schwebstoffiltermasse anorganische Hydrate oder Hydroxyde oder organische Ketone, Nitrile, Isonitrile, Karboxylverbindungen oder Abkömmlinge von Olefinen hineinbringt. Man hat aber noch nicht vorgeschlagen, oxydierend wirkende Stoffe zu verwenden, die imstande sind, die Schwebstoffteilchen, die nicht mechanisch zurückgehalten werden, chemisch so weitgehend umzusetzen, daß sie völlig unschädlich gemacht werden.It has already been proposed to manufacture particulate filters by that inorganic hydrates or hydroxides or organic Ketones, nitriles, isonitriles, carboxyl compounds or derivatives of olefins brings in. But one has not yet suggested oxidizing substances to use that are able to remove the suspended particles that are not mechanically retained are to be chemically implemented so extensively that they are made completely harmless.

Andere bekannte Verfahren zur Herstellung einer gegen suspendierte, feste und flüssige Teilchen sowie gegen giftige Dämpfe schützenden Filtermasse bestehen darin, daß man aus einem faserigen Material, insibesondere aus Cellulose, Hadern oder Watte, und pulverförmiger aktiver Kohle einen Brei herstellt und aus diesem Brei F:Itrationskörper passender Gestalt formt.Other known processes for the preparation of an anti-suspended, consist of solid and liquid particles as well as filter material protecting against toxic vapors in the fact that one made of a fibrous material, especially cellulose, rag or cotton wool, and powdered active charcoal makes a pulp and from this Pulp F: Forms iteration bodies of a suitable shape.

Man kann auch so vorgehen, daß man die Cellulose zunächst mit chemischen Mitteln einem Ouellverfahren unterwirft und in die dadurch vergrößerten Poren und zwischen die Fasern aktive Kohle einlagert, worauf man die Masse formt und trocknet. Auf die Weise erhält man ein Filter, welches die Schwebstoffteilchen zwar mechanisch zurückhält.und etwaige gasförmige, schädliche Verunreinigungen adsorptiv bindet, das aber keine chemische Veränderung der Schwebstoffteilchen bewirkt.One can also proceed in such a way that the cellulose is first treated with chemical Means subjected to an Ouelling process and into the thereby enlarged pores and active carbon is stored between the fibers, whereupon the mass is shaped and dried. In this way, a filter is obtained that removes the suspended matter mechanically retains. and any gaseous, harmful impurities adsorptive binds, but does not cause any chemical change in the suspended matter.

Claims (1)

PATENTANSPILUCII: Filter für Atemzwecke, dadurch gekennzeichnet, daß das Filter gegebenenfalls neben andersartigen Filterschichten eine aus tierischen, pflanzlichen oder mineralischen Fasern bestehende Schwebstoffilterschicht aufweist, die stabilisierte Abkömmlinge des Wasserstoffsuperoxyds oder der Alkaliperoxyde, insbesondere Percarbonate oder Perborate, enthält.PATENTANSPILUCII: Filters for breathing purposes, characterized in that the filter, in addition to other types of filter layers, one made of animal, has a particulate filter layer made of vegetable or mineral fibers, the stabilized derivatives of hydrogen peroxide or alkali peroxides, in particular percarbonates or perborates.
DED66708D 1933-10-01 1933-10-01 Filters for breathing purposes Expired DE712683C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DED66708D DE712683C (en) 1933-10-01 1933-10-01 Filters for breathing purposes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DED66708D DE712683C (en) 1933-10-01 1933-10-01 Filters for breathing purposes

Publications (1)

Publication Number Publication Date
DE712683C true DE712683C (en) 1941-10-23

Family

ID=7059530

Family Applications (1)

Application Number Title Priority Date Filing Date
DED66708D Expired DE712683C (en) 1933-10-01 1933-10-01 Filters for breathing purposes

Country Status (1)

Country Link
DE (1) DE712683C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1003985A3 (en) * 1990-04-03 1992-07-28 Heyndrickx Bruno Gas mask filter for cyanide compounds

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1003985A3 (en) * 1990-04-03 1992-07-28 Heyndrickx Bruno Gas mask filter for cyanide compounds

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