DE900417C - HEPA filter for breathing apparatus - Google Patents
HEPA filter for breathing apparatusInfo
- Publication number
- DE900417C DE900417C DED10617D DED0010617D DE900417C DE 900417 C DE900417 C DE 900417C DE D10617 D DED10617 D DE D10617D DE D0010617 D DED0010617 D DE D0010617D DE 900417 C DE900417 C DE 900417C
- Authority
- DE
- Germany
- Prior art keywords
- filter
- jacket
- breathing apparatus
- pleated
- hepa filter
- 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
- 230000029058 respiratory gaseous exchange Effects 0.000 title claims description 4
- 239000000853 adhesive Substances 0.000 claims description 7
- 230000001070 adhesive effect Effects 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000007788 liquid Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 2
- 239000004566 building material Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B23/00—Filters for breathing-protection purposes
Landscapes
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Filtering Materials (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Description
Die Erfindung betrifft ein Schwebstoffilter für Atemschutzgeräte, das! eine quer zur Strömungsrichtung der Atemluft gefältelte Filterschicht aufweist und mit einem die gefältelte Filterschicht seitlich umschließenden Mantel versehen ist, und: ein, Verfahren zur Herstellung eines solchen Schwebstoffilters. An dem Mantel des Schwebstoffi,lters ist vorzugsweise ein Flansch zum Einsetzen. .des Filterkörpers in das Filtergehäuse angeordhet.The invention relates to a particulate filter for breathing apparatus, the! has a filter layer pleated transversely to the direction of flow of the breathing air and provided with a jacket laterally enclosing the pleated filter layer and: a, method of manufacturing such a particulate filter. To the The jacket of the suspended matter filter is preferably a flange for insertion. .of the filter body angeordhet in the filter housing.
Bei einem bekannten Schwebstoffilter der genannten Art besteht die gefältelte Filterschicht und der die Filterschicht seitlich umschließende Mantel aus :einem Stück einer einheitlichen Filtermasse. Ein solches Filter ist jedoch schwierig und nur mit verhältnismäßig dicker Filterschicht herstellbar, da sieh eine dünne Filterschicht in .der erforderlichen Weise nicht formen oder ziehen läßt.In a known particulate filter of the type mentioned, there is pleated filter layer and the jacket laterally enclosing the filter layer made of: a piece of a uniform filter mass. However, one such filter is difficult and can only be produced with a relatively thick filter layer, see a thin filter layer cannot be shaped or drawn in the required manner.
Es ist weiterhin ein Schwebstoffilter ähnlicher Bauart vorgeschlagen worden, bei dem der Mantel aus einem luftundurchlässigen Baustoff, z. B. Kunstharz, besteht, :der in flüssigem Zustand an die gefältelte Filterschicht angegossen oder in halbflüssigem oder formbarem Zustande augepreßt wird. Zur Herstellung derartiger Filter werden :die genannten Stoffe vorzugsweise in Pulverform verwendet. Die Verfestigung derartiger Stoffe zu einem starren Körper erfolgt in bekannter Weise durch Erwärmen, und, durch Druck mittels eines beißen Preßs.tempels.A similar type of filter for suspended matter is also proposed been, in which the jacket made of an air-impermeable building material, for. B. synthetic resin, consists: which is poured onto the pleated filter sheet in a liquid state or is squeezed out in a semi-liquid or malleable state. To manufacture such Filters are: the substances mentioned, preferably used in powder form. The solidification such substances to a rigid body is done in a known manner by heating, and, by pressure by means of a bite press ram.
Die Erfindung erstrebt ein einfacheres Herstellungsverfahren und besteht :darin, .daß der Mantel aus einer Klebemasse hergestellt ist, die zu einer luftdichten, geschmeidigen Haut erhärtet.The invention seeks and exists for a simpler manufacturing process : in that .that the jacket is made of an adhesive that results in an airtight, soft skin hardens.
Die Klebemasse dringt in die gefältelte Schwebstoffilterschicht ein, so, daß nach dem Erhärten eine völlig einwandfreie, gas@diichte Abidichtung erzielt wird;. Diese Abdichtung ist insofern besonders vorteilhaft, als die Klebemasse nachdem Erhärten geschmeidig bleibt und einen: nachgiebigen Mantel ergibt, der die Weiterbehandlung des Filters erleichtept. Ein weiterer Vorteil besteht darin, daß es bei der Herstellung des Mantels nur notwendig ist, das Filter mit einer beispielsweise flüssigen Klebemasse amRande derart zu bestreichen, daß die durch die Wellungen oder Fältelungen gebildeten, im Querschnitt (dreieckförmigen Faltenzwisc'henräume !an ihren Enden verschlossen werden. Die Herstellung ist also äußerst einfach .durchzuführen und demzufolge billig.The adhesive penetrates the pleated particulate filter layer, so that after hardening a completely perfect, gas @ tight seal is achieved will;. This seal is particularly advantageous insofar as the adhesive is after Hardening remains pliable and a: yielding coat results that the further treatment of the filter facilitated. Another advantage is that it is easy to manufacture of the jacket is only necessary, the filter with a, for example, liquid adhesive to be coated on the edge in such a way that the corrugations or folds in cross-section (triangular fold spaces! closed at their ends will. The production is therefore extremely easy to carry out and consequently cheap.
In. der Zeichnung isst die Erfindung in einem Aus.führungsbeisgiel :dargestellt. . Abb. i zeigt einen Längsschnitt durch das gefältelte Schwebsto.ffilter, Abb. a .eine Ansicht von oben.In. the drawing eats the invention in one Aus.führungsbeisgiel : shown. . Fig. I shows a longitudinal section through the pleated HEPA filter, Fig. A. A view from above.
Die Zwischenräume h zwischen den Falten der Filterschicht c, idde im Querschnitt etwa dreieckförmig sind, sind am Rande :durch einen Mantel f abgeschlossen, :der aus einer Klebemassie hergestellt ist, :die zu einer luftdichten, geschmeidigen Haut e r 'härtet. Diese Klebemasse. 'kann gleichzeitig t> einen anschließenden Flansch g bilden..The spaces h between the folds of the filter layer c, idde are roughly triangular in cross-section, are at the edge: closed by a jacket f, : which is made from an adhesive massie: which becomes an airtight, pliable one Skin hardens. This adhesive. 'can at the same time t> a connecting flange form g ..
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DED10617D DE900417C (en) | 1934-11-02 | 1934-11-02 | HEPA filter for breathing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DED10617D DE900417C (en) | 1934-11-02 | 1934-11-02 | HEPA filter for breathing apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE900417C true DE900417C (en) | 1953-12-28 |
Family
ID=7033385
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DED10617D Expired DE900417C (en) | 1934-11-02 | 1934-11-02 | HEPA filter for breathing apparatus |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE900417C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1275870B (en) * | 1967-01-04 | 1968-08-22 | Draegerwerk Ag | Process for the production of a particulate filter insert for breathing apparatus |
| 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 |
-
1934
- 1934-11-02 DE DED10617D patent/DE900417C/en not_active Expired
Cited By (2)
| 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 |
| DE1275870B (en) * | 1967-01-04 | 1968-08-22 | Draegerwerk Ag | Process for the production of a particulate filter insert for breathing apparatus |
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