DE723257C - HEPA filters with filter walls connected by clamps - Google Patents

HEPA filters with filter walls connected by clamps

Info

Publication number
DE723257C
DE723257C DEA92347D DEA0092347D DE723257C DE 723257 C DE723257 C DE 723257C DE A92347 D DEA92347 D DE A92347D DE A0092347 D DEA0092347 D DE A0092347D DE 723257 C DE723257 C DE 723257C
Authority
DE
Germany
Prior art keywords
clamps
filter walls
filter
walls connected
hepa filters
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
DEA92347D
Other languages
German (de)
Inventor
Dr Erwin Thaler
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.)
Auergesellschaft GmbH
Original Assignee
Auergesellschaft GmbH
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 Auergesellschaft GmbH filed Critical Auergesellschaft GmbH
Priority to DEA92347D priority Critical patent/DE723257C/en
Application granted granted Critical
Publication of DE723257C publication Critical patent/DE723257C/en
Expired legal-status Critical Current

Links

Classifications

    • AHUMAN NECESSITIES
    • A62LIFE-SAVING; FIRE-FIGHTING
    • A62BDEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B23/00Filters for breathing-protection purposes

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
  • Paper (AREA)

Description

Schwebstoffilter mit durch Schellen verbundenen Filterwänden Die Erfindung betrifft ein Schwebstofffilter mit durch Schellen verbundenen Filterwänden. Beim Gebrauch solcher Filter, z. B. der bekannten Kammerfilter, zeigt sich, daß bei wechselnder Feuchtung und Trocknung der aus Filterpapier oder Filterkarton bestehenden Filterwände an den Schellenverbindungen dadurch eine Undichtigkeit auftreten kann, daß zwar bei der Feuchtung die Ouellung der Filterwände an den zusammengepreßten Stellen durch die einfassenden Metallschellen begrenzt wird, daß aber bei der darauffolgenden Schrumpfung durch Trocknung eine Lockerung des gepreßten Randes eintritt.HEPA filters with filter walls connected by clamps The invention relates to a particulate filter with filter walls connected by clamps. At the Use of such filters, e.g. B. the well-known chamber filter shows that when changing Moistening and drying of the filter walls made of filter paper or cardboard at the clamp connections a leak can occur that although in the case of humidification, the oiling of the filter walls at the compressed areas is limited by the surrounding metal clamps, but that in the case of the following Shrinkage due to drying loosening of the pressed edge occurs.

Bei Filtern aus besonders festen Papieren oder mit zwischen den Papieren eingelegten Dichtungseinlagen, z. B. Pappe, kann es auch vorkommen, daß unter der Wirkung des Ouellungsdruckes die aus weichem Blech bestehenden Schellen nachgeben und etwas auseinandergebogen werden.With filters made of particularly strong paper or with between the papers inserted sealing inserts, e.g. B. cardboard, it can also happen that under the The clamps made of soft sheet metal give way to the effect of the source pressure and be bent apart a little.

Der bisher empfundene Mangel wird gemäß der Erfindung dadurch behoben, daß die Filterwände bzw. die Faserzwischenräume dieser Wände, an den Stellen, wo sie zwischen Schellen eingeklemmt werden sollen, mit wasserabstoßenden Stoffen gefüllt werden. So z. B. kann man den Rand solcher Filterwände durch Tauchen in flüssiges Paraffin vorbehandeln oder kann ihn mit Latex oder Kunststoffemulsionen dichtsetzen. Bei der Behandlung mit Latex ergibt sich der besondere Vorteil, daß auch eine gewisse Elastizität der mit den Schellen zusammengepreßten Ränder der Filterwände erzielt wird. Mit gleichem Vorteil kann die Füllung der Randteile der Filterwände mit Asphalten, hochschmelzenden Wachsen und ähnlichen Stoffen vorgenommen werden.The deficiency felt up to now is eliminated according to the invention by that the filter walls or the fiber spaces between these walls, at the points where they are to be wedged between clamps, filled with water-repellent substances will. So z. B. you can the edge of such filter walls by dipping in liquid Pre-treat paraffin or can seal it with latex or plastic emulsions. Treatment with latex has the particular advantage that it also has a certain amount The elasticity of the edges of the filter walls pressed together with the clamps is achieved will. The filling of the edge parts of the filter walls with asphalt, high-melting waxes and similar substances are made.

In der Zeichnung ist ein Ausführungsbeispiel des Erfindungsgegenstandes im Schnitt dargestellt.The drawing shows an exemplary embodiment of the subject matter of the invention shown in section.

Die Filterwände r und 2 aus Filterkarton sind mittels :Metallschellen 3 miteinander verbunden. Die Zonen q. der Filterwände, die unter dem Druck der Metallschellen liegen, sind mit wasserabstoßenden Stoffen imprägniert oder gefüllt.The filter walls r and 2 made of filter cardboard are by means of: Metal clamps 3 connected to each other. The zones q. the filter walls, which are under the pressure of the metal clamps are impregnated or filled with water-repellent substances.

Claims (1)

PATENTANSPRUCH: Schwebstoffilter mit durch Schellen verbundenen Filterwänden, dadurch gekennzeichnet, daß die Randstellen der Filterwände, die unter dem Druck der Schellen stehen, mit wasserabstoßenden Stoffen, wie Paraffin, Latex, Kunststoffemulsionen, Asphalten, hochschmelzenden Wachsen oder ähnlichen Stoffen, imprägniert oder gefüllt sind.PATENT CLAIM: HEPA filter with filter walls connected by clamps, characterized in that the edge points of the filter walls which are under the pressure the clamps with water-repellent substances such as paraffin, latex, plastic emulsions, Asphaltene, high-melting wax or similar materials, impregnated or filled are.
DEA92347D 1940-11-13 1940-11-13 HEPA filters with filter walls connected by clamps Expired DE723257C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEA92347D DE723257C (en) 1940-11-13 1940-11-13 HEPA filters with filter walls connected by clamps

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEA92347D DE723257C (en) 1940-11-13 1940-11-13 HEPA filters with filter walls connected by clamps

Publications (1)

Publication Number Publication Date
DE723257C true DE723257C (en) 1942-07-31

Family

ID=6951109

Family Applications (1)

Application Number Title Priority Date Filing Date
DEA92347D Expired DE723257C (en) 1940-11-13 1940-11-13 HEPA filters with filter walls connected by clamps

Country Status (1)

Country Link
DE (1) DE723257C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1097282B (en) * 1959-07-18 1961-01-12 Auergesellschaft Gmbh Filter insert made of soft fiber to trap fine dust or suspended matter from the air you breathe

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1097282B (en) * 1959-07-18 1961-01-12 Auergesellschaft Gmbh Filter insert made of soft fiber to trap fine dust or suspended matter from the air you breathe

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