DE961592C - HEPA filters made of folded, flat building material, especially paper - Google Patents
HEPA filters made of folded, flat building material, especially paperInfo
- Publication number
- DE961592C DE961592C DED10607D DED0010607D DE961592C DE 961592 C DE961592 C DE 961592C DE D10607 D DED10607 D DE D10607D DE D0010607 D DED0010607 D DE D0010607D DE 961592 C DE961592 C DE 961592C
- Authority
- DE
- Germany
- Prior art keywords
- filter
- folded
- building material
- wire mesh
- star
- 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
- 239000004566 building material Substances 0.000 title claims description 10
- 125000006850 spacer group Chemical group 0.000 description 3
- 239000004744 fabric Substances 0.000 description 2
- 230000000241 respiratory effect Effects 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
- B01D29/13—Supported filter elements
- B01D29/15—Supported filter elements arranged for inward flow filtration
- B01D29/21—Supported filter elements arranged for inward flow filtration with corrugated, folded or wound sheets
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B23/00—Filters for breathing-protection purposes
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Description
Schwebstoffilter aus gefaltetem, flächenhaftem Baustoff, insbesondere Papier Es sind Slchwebls,toffillter, und zwar sogenannte Sternfilter bekannt, bei denen das Papier, im Querschnitt gesehen, zu einem Stern gefaltet ist. Derartige Filter sind bisher vorwiegend nur für Filter einer geringen Höhe gebaut worden, dieses unter anderem aus dem Grunde, da aas gefaltete Papier insbesondere unter dem Einfluß von Feuchtigkeit und wechselnden Temperaturen dazu neigt, seine ursprüngliche Form zu verlieren. Da die gefalteten Flächen nun meist eng beieinanderliegen, ergibt sich der Nachteil, daß sich die Flächen gegenseitig berühren, wodurch naturgemäß die wirksame Oberfläche des Filters stark verringert wird.HEPA filters made of folded, flat building material, in particular paper Slchwebls, toffillter, so-called star filters are known at which the paper, seen in cross section, is folded into a star. Such Filters have so far mainly been built for filters of a low height, this, among other things, for the reason that aas folded paper in particular under the influence of moisture and changing temperatures tends to its original Losing shape. Since the folded surfaces are now mostly close together, results the disadvantage that the surfaces touch each other, which naturally the effective surface of the filter is greatly reduced.
Die Erfindung hat sich die Aufgabe gestellt, diese Nachteile zu beseitigen und es zu ermöglichten, slternförmig gefaltete Schwebstoffilte¢ auch in jeder gewünschten Höhe zu bauen, ohne daß die geschilderten Nachteile auftreten. Die Erfindung besteht darin, daß das Faltenfilter zwischen einem Gerüst aus zwei der Faltelung des Faltenfilters entsprechend gefalteten Streifen aus Drahtgewebe oder einem ähnlichen Baustoff liegt. The invention has set itself the task of eliminating these disadvantages and to make it possible to use star-shaped folded particulate filters ¢ in any desired Build height without the disadvantages described occur. The invention exists in that the pleated filter between a framework of two of the pleating of the pleated filter appropriately folded strips of wire mesh or a similar building material.
Das Gerüst kann auch unterteilt sein und aus aus Drahtgeweben oder ähnlichen Baustoffen gebildeten Winkelstücken bestehen, die um und/oder in die Filterfalten gelegt sind. The framework can also be subdivided and made of wire mesh or Similar building materials are made of elbows around and / or in the filter folds are laid.
Auch kann es vorteilhaft sein, das Filter zwischen konzentrischen Ringen aus Drahtgeweben oder ähnlichem Baustoff zu legen. Das Gerüst kann aus Drahtgeweben, durchlochten Blechstreifen od. dgl. gebildet sein. It can also be advantageous to have the filter between concentric To lay rings made of wire mesh or similar building material. The framework can be made of wire mesh, perforated sheet metal strips or the like. Be formed.
Abgesehen davon, daß erfindungsgemäß ein Berühren der Filterfalten und damit eine Verringerung der Filteroberfläche vermieden wird, besteht noch ein Vorteil darin, daß die mechanische Festigkeit des Filters nicht nur durch die Festigkeit der Filtermasse allein bestimmt, sondern wesentlich durch die Festigkeit des Gerüstes erhöht wird. Die Festigkeit dieses Gerüstes kann um ein Vielfaches größer als diejenige des Filterstoffes sein. Schließ lich wird noch durch die erfindungsgemäße Bauart erreicht, daß der empfindliche Baustoff durch das Gerüst vor Beschädigungen geschützt wird. Apart from the fact that, according to the invention, touching the filter folds and so that a reduction in the filter surface is avoided, there is still one The advantage is that the mechanical strength of the filter is not only due to the strength The filter mass is determined solely by the strength of the structure is increased. The strength of this scaffolding can be many times greater than that of the filter material. Finally Lich is still through the design according to the invention achieves that the sensitive building material is protected from damage by the scaffolding will.
Es sind 5 eliweb stoffilter für Gebäudelgasschutz, Fluchtkammern, Raumfilter usw. bekannt, die aus Filterplatten aus Filz, Watte, Zellstoff, Baumwolle, Wollgewebe oder anderen an sich zum Filtrieren bekannten faserigen Materialien bestehen und die leicht auswechselbar mit Zwischenraum in einem Rahmen eingespannt sind. In dem Zwischenraum sind dabei zweckmäßig gewellte Drahtsiebe zum gegenseitigen Abstützen der Filterplatten angebracht. Zum Einspannen der Filterplatten in den Rahmen dienen dann federnde Klappen. Die Verwendung von gewellten Drahtsieben für Sternfilter gibt diesen nicht die gewünschte Festigkeit. There are 5 eliweb fabric filters for building gas protection, escape chambers, Spatial filters, etc. known, which are made from filter plates made of felt, wadding, cellulose, cotton, Wool fabric or other fibrous materials known per se for filtering and which are easily interchangeable and clamped in a frame with space in between. In the space there are expediently corrugated wire screens for mutual Supporting the filter plates attached. For clamping the filter plates in the Frames then serve as resilient flaps. The use of corrugated wire screens for Star filters do not give them the desired strength.
Weiterhin sind Atemschutzfilter mit einem aus paarweise zusammengehaltenen Ringscheiben bestehenden Solveb.stoffllter beIcannt, dessen unterste Ringseheibe mit dem innerenRingraum der das Atemschutzfiltergebäuse abschließenden Lochplatte ver bördel ist. Dableli wird das Schwebstoffflter von einem topfartigen Käfig umgeben, dessen am oberen Rand umbördelte Seitenwand die durch Abstandsringe im Abstand voneinander gehaltenen Filterringscheiben zusammenpreßt. Dabei sind an den Abstandsringen zwischen die Filterringscheiben hineinragende keilförmige Abstandsstege angeordnet. Diese liegen dabei nicht der gesamten Filterfläche an, so daß sie nicht diese auf ihrer ganzen Ausdehnung abstützen. Furthermore, there are respiratory protection filters with one of the pairs held together Ring disks of the existing Solveb with the inner ring space of the perforated plate closing the respiratory protection filter housing ver crimping is. Dableli, the suspended matter filter is surrounded by a pot-like cage, whose side wall beaded at the upper edge is spaced apart by spacer rings held together filter ring disks. There are on the spacer rings between arranged wedge-shaped spacer bars protruding into the filter ring disks. These do not lie against the entire filter surface, so that they do not have this on their support the entire extent.
In der Zeichnung sind mehrere Ausführungsformen des erfindungsgemäßen Schwebstoffilters dargestellt. In the drawing are several embodiments of the invention HEPA filter shown.
Abb. I und z zeigen zwei ähnliche Ausführungsformen eines Sternfilters im Querschnitt, die Abb. 3 und 4 die gleichen Filter im Längsschnitt. Fig. I and z show two similar embodiments of a star filter in cross section, Figs. 3 and 4 show the same filter in longitudinal section.
Das Gerüst besteht in beiden Fällen aus den der Faltelung der Papierbahnen 2 entsprechend winkelförmig einmal gefalteten Drahtsieben 1. Während in Abb. I die steifen Drahtsiebe die Faltkanten des Papiers auf der Außenseite umgreifen, werden bei der Ausführungsform nach Abb. 2 die Kanten der Papierbahn 7 durch die winkelförmig gebogenen Drahtsiebe 6 auf der Außenseite nicht jeweils von einem Drahtsieb umgriffen. Die Siebkeile sind von derselben Breite wie die Papierbahn 2 bzw. 7 und werden mit dieser zusammen in die Klebmasse 3 eingebettet, die in den Deckel 4 und den Boden 5 des Filters eingegossen ist und das Filter zusammenhält. Da die Papierbahn stets zwischen zwei Streifen Drahtsieb liegt, kann sie sich nicht verformen.In both cases, the framework consists of the folding of the paper webs 2 wire screens folded once at an angle 1. While in Fig stiff wire screens encompass the folded edges of the paper on the outside in the embodiment according to Fig. 2, the edges of the paper web 7 through the angular curved wire screens 6 on the outside not each encompassed by a wire screen. The screen wedges are of the same width as the paper web 2 or 7 and are with this is embedded together in the adhesive 3, which is in the cover 4 and the bottom 5 of the filter is poured in and holds the filter together. Because the paper web always If there is between two strips of wire mesh, it cannot deform.
Abb. 5 zeigt einen Querschnitt einer Ausführungsform, bei der das Gerüst aus zwei der Faltelung des Faltenfilters I3 entsprechend gefalteten endlosen Drahtgewebestreifen besteht, zwischen denen das Faltenfilter liegt. Fig. 5 shows a cross section of an embodiment in which the Frame made of two endless ones that are folded according to the folding of the folded filter I3 There is wire mesh strips between which the pleated filter is located.
Abb. 6 zeigt eine Ausführungsform, bei der noch zwei konzentrisch liegende zylindrische steife Drahtsiebe IO und II angeordnet sind, die den Filterstern an den innenliegenden und an den außenliegenden Kanten halten. Fig. 6 shows an embodiment in which two more concentrically lying cylindrical rigid wire screens IO and II are arranged, which form the filter star hold on to the inside and outside edges.
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DED10607D DE961592C (en) | 1943-05-16 | 1943-05-16 | HEPA filters made of folded, flat building material, especially paper |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DED10607D DE961592C (en) | 1943-05-16 | 1943-05-16 | HEPA filters made of folded, flat building material, especially paper |
Publications (1)
Publication Number | Publication Date |
---|---|
DE961592C true DE961592C (en) | 1957-05-16 |
Family
ID=7033377
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DED10607D Expired DE961592C (en) | 1943-05-16 | 1943-05-16 | HEPA filters made of folded, flat building material, especially paper |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE961592C (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1088355B (en) * | 1958-06-27 | 1960-09-01 | Auergesellschaft Ag | Breathing protection filter to protect against dust and suspended matter |
DE1124364B (en) * | 1958-04-26 | 1962-02-22 | Draegerwerk Ag | Respiratory protection device with a folded fine dust filter arranged in a filter housing |
DE1182527B (en) * | 1957-12-02 | 1964-11-26 | Draegerwerk Ag | Process for the production of particulate filter inserts and particulate filter insert produced by this process |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE585935C (en) * | 1931-01-30 | 1933-10-13 | Draegerwerk Ag | HEPA filters for building gas protection, escape chambers, room filter devices or the like. |
FR785119A (en) * | 1934-04-04 | 1935-08-02 | filter element for breathing apparatus and its mounting method | |
CH207611A (en) * | 1937-03-24 | 1939-11-15 | Pirelli | Filter with fibrous material protecting against aerosols. |
FR864404A (en) * | 1939-12-06 | 1941-04-26 | Improvement in filter elements for breathing apparatus | |
DE706554C (en) * | 1939-05-03 | 1941-05-29 | Auergesellschaft Akt Ges | Respiratory protection filter |
-
1943
- 1943-05-16 DE DED10607D patent/DE961592C/en not_active Expired
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE585935C (en) * | 1931-01-30 | 1933-10-13 | Draegerwerk Ag | HEPA filters for building gas protection, escape chambers, room filter devices or the like. |
FR785119A (en) * | 1934-04-04 | 1935-08-02 | filter element for breathing apparatus and its mounting method | |
CH207611A (en) * | 1937-03-24 | 1939-11-15 | Pirelli | Filter with fibrous material protecting against aerosols. |
DE706554C (en) * | 1939-05-03 | 1941-05-29 | Auergesellschaft Akt Ges | Respiratory protection filter |
FR864404A (en) * | 1939-12-06 | 1941-04-26 | Improvement in filter elements for breathing apparatus |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1182527B (en) * | 1957-12-02 | 1964-11-26 | Draegerwerk Ag | Process for the production of particulate filter inserts and particulate filter insert produced by this process |
DE1124364B (en) * | 1958-04-26 | 1962-02-22 | Draegerwerk Ag | Respiratory protection device with a folded fine dust filter arranged in a filter housing |
DE1088355B (en) * | 1958-06-27 | 1960-09-01 | Auergesellschaft Ag | Breathing protection filter to protect against dust and suspended matter |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE2745526C2 (en) | Process for fine filtration of liquids and fiber bundle pressure filters for carrying out the process | |
DE1607707A1 (en) | Particulate filter | |
DE1032224B (en) | Filter insert made from a sheet of porous material for liquids and gases | |
DE961592C (en) | HEPA filters made of folded, flat building material, especially paper | |
DE963829C (en) | Filter body made of a folded filter fabric for insert frames of air filters to separate the finest dust | |
DE855394C (en) | Filter cartridge | |
DE3311863A1 (en) | FILTER CARTRIDGE FOR FILTER APPARATUS | |
DE1607697A1 (en) | Spacer for filter packs | |
DE2744037C3 (en) | Spacer element for filter bags | |
DE827351C (en) | Filter plate for filter presses | |
DE2736433A1 (en) | Aerosol and suspended matter filter has large surface - obtained by honeycomb assembly of cells with alternate ends closed | |
DE1955789B2 (en) | FILTER MADE OF ZIGZAG-SHAPED, STRIP-SHAPED FILTER PAPER | |
DE1094108B (en) | Filters for air raid shelters | |
DE849885C (en) | Chamber filter for gaseous or liquid substances | |
DE3234674C2 (en) | ||
DE449430C (en) | Filter jacket for cell filter suction drums | |
DE703933C (en) | Respiratory protection filter | |
DE1204629B (en) | Zigzag folded filter insert | |
AT153296B (en) | Filter. | |
AT153803B (en) | Gas filter. | |
DE549204C (en) | Filter cloth attachment to filter press plates | |
DE706554C (en) | Respiratory protection filter | |
DE1182527B (en) | Process for the production of particulate filter inserts and particulate filter insert produced by this process | |
DE733075C (en) | Lampshade made from an advantageously round blank by folding | |
DE1576496A1 (en) | Filters, especially air filters for internal combustion engines |