DE1800826C

DE1800826C - Filters for respirators

Info

Publication number: DE1800826C
Authority: DE
Inventors: Guillaame Saint-Etienne Gay-Chatain (Frankreich)
Original assignee: Ministère de la Défense
Current assignee: Ministere des Armees
Publication date: 1971-11-04

Description

Der Erfindung liegt die Aufgabe zugrunde, ein ring 3 verbunden.The invention is based on the object of a ring 3 connected.

Filter der vorstehend beschriebenen Art zu schaffen, In F i g. 2 erkennt man die Anordnung des als Verbei dem die lebenswichtige Dichtung störungsunan- bindungsmittel 7 dienenden polymerisierten Kunstfälliger und dessen Fertigung einff -her ist. 30 Stoffs im Schwebstoffiltergehäuse 1, eines Eintritts- To create filters of the type described above, in FIG. 2 you can see the arrangement of the as Verbei the polymerized artificial substance serving the vital seal and the disruption-free seal, and its production is easier. 30 substance in the HEPA filter housing 1, an inlet

Die Lösung besteht darin, daß der Staubfilter- gittersS im Kohlefiltergehäuse 2 und des Bördeleinsatz mit dem Staubfiltergehäuse durch eine bis rings 3, der die beiden Filtergehäuse verbindet. Der über einen Flansch des Staubfiltergehäuses gezogene aus gefaltetem Papier bestehende Schwebstoffilter- und dort unmittelbar an einer Dichtfläche des Kohle- einsatz ist mit 10 bezeichnetThe solution is that the dust filter grille S in the carbon filter housing 2 and the crimped insert with the dust filter housing through one to rings 3, which connects the two filter housings. the HEPA filters made of folded paper drawn over a flange of the dust filter housing and there directly on a sealing surface of the carbon insert is designated by 10

filtergehäuses anliegende Schicht eines zugleich dich- 35 Die Zerstörung des Bördelruigs 3 im Hinblick auffilter housing adjacent layer of a seal at the same time 35 The destruction of the Bördelruigs 3 with a view to

tend wirkenden polymerisierten Kunststoffs ver- den Austausch eines Filtereinsatzes wird durch Zun-polymerized plastic with a tendency to replace a filter insert

bunden ist. Dadurch wird ein Dichtring gespart, und gen 4 (Fi g. 1) erleichtert,is bound. This saves a sealing ring, and gen 4 (Fig. 1) makes it easier to

es werden nach dem Verbinden der beiden Filter- _p .After connecting the two filters, _p .

gehäuse miteinander sämtliche Nebenwege für ver- ratemansprucn.housing with each other all bypasses for claims.

unreinigte Luft zwischen dem Filtergehäuse und dem 40 Filter für Atemschutzmasken mit einem Staub-uncleaned air between the filter housing and the 40 filter for respirators with a dust

Klebmittel des Staubfiltereinsatzes beseitigt, selbst filtereinsatz und einem Kohlefiltereinsatz, derenAdhesive of the dust filter element eliminated, even filter element and a carbon filter element, their

wenn das Klebemittel an der Innenwand des Filter- Filtergehäuse durch einen Bördelring gasdichtwhen the adhesive on the inner wall of the filter filter housing is gas-tight by means of a crimp ring

gehäuses schlecht haftet. miteinander verbunden sind, dadurch g e -housing does not adhere well. are connected to each other, thereby g e -

Ein weiterer Fortschritt, den die Wahl eines poly- kennzeichnet, daß der Staubfiltereinsatz merisierten Kunststoffs bringt, liegt darin, daß die 45 (10) mit dem Staubfiltergehäuse (1) durch eine Abdichtungen des Einsatzes gegen sein Gehäuse und bis über einen Flansch des Staubfiltergehäuses des Gehäuses gegen das weitere Gehäuse durch ein (10) gezogene und dort unmittelbar an einer einziges homogenes und fugenloses Teil geschieht, Dichtfläche des Kohlefiltergehäuses (2) andern jede komplizierte Form ohne Schädigung seiner liegende Schicht eines zugleich dichtend wirken-Eigenschaften gegeben werden kann. 50 den polymerisierten Kunststoffs verbunden ist.Another advancement that characterizes the choice of a poly- is that of the dust filter element brings merized plastic is that the 45 (10) with the dust filter housing (1) through a Seals the insert against its housing and up to a flange of the dust filter housing of the housing against the further housing through a (10) and there directly on a the only homogeneous and seamless part happens, change the sealing surface of the carbon filter housing (2) every complicated shape without damaging its lying layer has a poetic effect at the same time can be given. 50 is connected to the polymerized plastic.

Hierzu 1 Blatt Zeichnungen1 sheet of drawings

Claims

ι ² ι ²

The invention relates to a filter for respiratory protection by the German patent 734 537 it is

masks with a dust filter insert and, although known, the particulate filter insert in the

Carbon filter insert, the filter housing of which is covered by a housing with before the insert is imprinted.

Flanged ring are connected to one another in a gas-tight manner. On applied latex, which is also effective when heated

in this way it is possible to glue one of the two filter parts 5 or colloidal plastic. To a

to be exchanged or changed later (German use for sealing the housing opposite

Patent 913 854). however, another housing is not intended.

Before they are connected, the filter housings are also no longer new (see German patent

usually a rubber font 689 212) through the flanged ring, the jacket of a suspended matter filter -

gasket that ensures complete tightness between io insert made of an air-impermeable building material,

the carbon filter and the dust filter part. B. synthetic resin to form, which is in the liquid state

perform. The tightness must also be cast onto the folded filter layer or in half-

then retained when the filter housing is pressed in a liquid or malleable state during use.

Sustained blows or deformations, by which the Such a thermoplastic synthetic resin can not

Location of the dust or carbon filter insert in the 15 at the same time act as a housing seal because: s under the

Housing is changed. Pressing through the flanged ring in the event of a

The same applies to the cementing of the usually warming flow (warm flow) and so the tightness

suspended matter consisting of folded filter paper would eventually be lost,

filter insert, which must adhere to the housing everywhere, the invention is based on the in the drawing

so that no harmful ao illustrated embodiment is explained when using the filter. It shows

There are secondary routes for polluted air. F i g. 1 a filter having two filter cartridges

That ensures the tightness between the housings from the outside and

performing sealing ring only fulfills its task if Fig.

2 Details of the connection of the parts in

it rests against the sealing surfaces everywhere. Also is cut and on a larger scale,

a separate operation is required to insert it. 35 According to FIG. 1, a carbon filter housing 2 is included

so. a HEPA filter housing 1 through a Börde! -