DE4115313C2 - Device for filtering irradiated and toxic aerosols and harmful gases - Google Patents
Device for filtering irradiated and toxic aerosols and harmful gasesInfo
- Publication number
- DE4115313C2 DE4115313C2 DE19914115313 DE4115313A DE4115313C2 DE 4115313 C2 DE4115313 C2 DE 4115313C2 DE 19914115313 DE19914115313 DE 19914115313 DE 4115313 A DE4115313 A DE 4115313A DE 4115313 C2 DE4115313 C2 DE 4115313C2
- Authority
- DE
- Germany
- Prior art keywords
- filter
- cylindrical
- air
- face
- spring elements
- 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 - Fee Related
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/24—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
- B01D46/2403—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies characterised by the physical shape or structure of the filtering element
- B01D46/2411—Filter cartridges
- B01D46/2414—End caps including additional functions or special forms
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B23/00—Filters for breathing-protection purposes
- A62B23/04—Filters for breathing-protection purposes for gasproof shelters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0027—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions
- B01D46/0036—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions by adsorption or absorption
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0039—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with flow guiding by feed or discharge devices
- B01D46/0047—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with flow guiding by feed or discharge devices for discharging the filtered gas
- B01D46/0049—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with flow guiding by feed or discharge devices for discharging the filtered gas containing fixed gas displacement elements or cores
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0084—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours provided with safety means
- B01D46/0091—Including arrangements for environmental or personal protection
- B01D46/0094—Including arrangements for environmental or personal protection against radiation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
- B01D53/0407—Constructional details of adsorbing systems
- B01D53/0415—Beds in cartridges
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
- B01D53/0407—Constructional details of adsorbing systems
- B01D53/0431—Beds with radial gas flow
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
- B01D53/0407—Constructional details of adsorbing systems
- B01D53/0446—Means for feeding or distributing gases
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/10—Inorganic adsorbents
- B01D2253/102—Carbon
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/20—Halogens or halogen compounds
- B01D2257/206—Organic halogen compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/93—Toxic compounds not provided for in groups B01D2257/00 - B01D2257/708
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2271/00—Sealings for filters specially adapted for separating dispersed particles from gases or vapours
- B01D2271/02—Gaskets, sealings
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Environmental & Geological Engineering (AREA)
- General Health & Medical Sciences (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
- Respiratory Apparatuses And Protective Means (AREA)
Description
Die Erfindung betrifft eine Vorrichtung zur Filterung von verstrahlten und giftigen Aerosolen und schädlichen Gasen gemäß dem Oberbegriff von Anspruch 1.The invention relates to a device for filtering irradiated and toxic Aerosols and harmful gases according to the preamble of claim 1.
Bezüglich des jetzigen Informationsstandes sind in den bisher verwendeten zylindrischen Kompaktfiltern (Fig. 1) deren Luftein- und Luftaustrittsöffnungen (LE, LA), die sich mittig der Zylinderstirnseiten (S1, S2) befinden, konstruktiv sehr aufwendig und in der Herstellung zu teuer.With regard to the current status of information in the previously used cylindrical compact filters ( Fig. 1), their air inlet and outlet openings (LE, LA), which are located in the center of the cylinder end faces (S1, S2), are structurally very complex and too expensive to manufacture.
Um die zu filternde Luft von der ersten stirnseitigen Eintrittsöffnung (LE) über die integrierten zylindrisch angeordneten Filterstufen (K und A) auf die zweite gegenüberliegende stirnseitige Austrittsöffnung (LA) zu leiten, bedarf es einer konstruktiven aufwendigen Fertigungsmethode, um die Filterstufen zu umgehen. Desweiteren wird durch die Umlenkung (Umgehung) in eine sogenannte Umlenkkammer (U) kostbarer Raum, der dem Filterbett vorenthalten wird, vergeudet. Nachteilig wirkt sich ebenfalls diese Umlenkung bzw. Umgehung auf den gesamten Luftwiderstand des Filters aus, welche zur Erhöhung des Druckverlustes beiträgt. Desweiteren ist eine Verkleinerung des Kompaktfilters bezogen auf den Außendurchmesser, der verbunden ist mit der Verkleinerung der zylindrisch angeordneten Filterbetten (Gas- und Schwebstoffilterbett), ohne Verlust der Adsorbtionsleistung bei dieser Filterkonzeption nicht möglich.In order to filter the air to be filtered from the first front entry opening (LE) via the integrated cylindrical filter stages (K and A) to the second one opposite is required to direct the opposite exit opening (LA) constructive complex manufacturing method to bypass the filter stages. Furthermore, the redirection (bypass) into a so-called Deflection chamber (U) precious space that is withheld from the filter bed is wasted. This redirection or bypass also has a disadvantageous effect on the whole Air resistance of the filter, which contributes to increasing the pressure loss. Furthermore, a reduction of the compact filter is based on the Outside diameter, which is associated with the reduction of the cylindrical arranged filter beds (gas and particle filter bed) without loss of Adsorption performance not possible with this filter concept.
Es ist zwar bekannt, daß es Aktivkohle gibt, deren Adsorbtionsleistung gesteigert werden konnte. Dieses geht jedoch nicht an der Tatsache vorbei, daß nach wie vor eine Mindestbettdicke der verwendeten Aktivkohle (K) vorhanden sein muß, um den in der Atemluft enthaltenen Schadstoffen genügend Zeit, sprich Verweilzeit, zur Anlagerung zu geben.It is known that there is activated carbon, whose adsorption performance increases could be. However, this does not ignore the fact that there is still one Minimum bed thickness of the activated carbon (K) used must be present in order to Pollutants contain enough time, i.e. dwell time, for accumulation to give.
Bezugnehmend auf das Schwebstoffilter und eine Reduzierung des Filteraußendurchmessers bei gleichbleibender zu filternder Luftmenge läßt sich das gefaltete Schwebstoffilter (A) in seiner jetzigen Position (Fig. 1) in seiner Falthöhe nicht mehr verkleinern, da dieses sonst zu einer Verringerung der Filterfläche und einer Erhöhung des Luftwiderstandes führen würde. With regard to the suspended matter filter and a reduction in the outside diameter of the filter while the amount of air to be filtered remains the same, the folded suspended matter filter (A) in its current position ( Fig. 1) can no longer be reduced in its folded height, as this would otherwise reduce the filter area and increase the Drag would result.
Durch Änderung der Anordnung der Filterstufen, d. h. durch Verlegung des gefalteten Schwebstoffilters (A) von der herkömmlichen inneren Platzierung im Kompaktfilter (Fig. 1) auf den äußeren Durchmesser des Kompaktfilters (Fig. 2a und 2b) können die Proportionen der Filterstufen zueinander verändert werden. Die Anzahl der Fallungen des Schwebstoffilters können aufgrund des gegebenen größeren Raumdurchmessers erhöht werden. Als Ausgleich der hinzugewonnenen größer gewordenen Schwebstoffilterfläche wird eine Verringerung der Faltenhöhe vorgenommen. Durch diese konstruktive Änderung wird die Filterbettiefe, gleich Faltenhöhe, bei gleichbleibender Schwebstoffilterfläche verkleinert. Der jetzt gewonnene Raum kann nun dem Filterbett des Gasfilters zugeschlagen werden.By changing the arrangement of the filter stages, ie by moving the folded suspended matter filter (A) from the conventional inner placement in the compact filter ( Fig. 1) to the outer diameter of the compact filter ( Fig. 2a and 2b), the proportions of the filter stages to each other can be changed. The number of drops of the suspended matter filter can be increased due to the larger room diameter. In order to compensate for the increased particle size filter area, the pleat height is reduced. This design change means that the filter bed depth, which is the same as the pleat height, is reduced while the suspended matter filter surface remains the same. The space now gained can now be added to the filter bed of the gas filter.
Das Gasfilter (K), welches aus geschütteter Aktivkohle besteht, wird nun um den freigewordenen Raum erweitert, so daß für die optimale Adsorbtion von giftigen Gasen trotz Verkleinerung des gesamten Kompaktfilters die Kohlebettiefe erhalten bleiben kann.The gas filter (K), which consists of poured activated carbon, is now around the vacated space expanded so that for the optimal adsorption of toxic gases the carbon bed depth is retained despite the reduction in the size of the entire compact filter can.
Eine gattungsgemäße Vorrichtung ist bekannt mit dem deutschen Gebrauchsmuster DE 85 03 332 U1. Das zylinderförmige ABC-Filter wird auf ein im Filtergehäuse angeordnetes gelochtes Zentrierrohr aufgesteckt und duch eine Knebelmutter festgesetzt. Anschließend ist das Filtergehäuse mit einem Deckel zu verschließen. Die Luftzufuhr erfolgt über einen einzigen Luftzufuhrstutzen.A generic device is known with the German utility model DE 85 03 332 U1. The cylindrical ABC filter is placed on a in the filter housing arranged perforated centering tube and plugged with a toggle nut fixed. Then close the filter housing with a cover. The Air is supplied through a single air inlet.
Aus der deutschen Patentschrift DE 939 308 ist es bekannt, ein mit gekörnter Aktivkohle beschicktes Ringfilter gegen Kurzschlüsse zu sichern durch einen auf die Aktivkohle wirkenden, federbelasteten und beweglichen Deckel.From German patent DE 939 308 it is known to have a grained To secure activated carbon loaded ring filter against short circuits by one on the Activated carbon spring-loaded and movable lid.
Aufgabe der Erfindung ist die Schaffung eines zylindrischen Kompaktfilters kleiner Abmessung mit guter Sicherheit gegen Schock- und Rütteleinwirkung.The object of the invention is to create a cylindrical compact filter smaller Dimension with good security against shock and vibration.
Diese Aufgabe wird gelöst durch die Merkmale des Anspruchs 1.This object is achieved by the features of claim 1.
Bezugnehmend auf die bereits bekannten Filter (Fig. 1), die intern eine zusätzliche Umlenkung (U) aufweisen, wird erfindungsgemäß durch Wegfall der Umlenkung dafür gesorgt, daß durch diese Platzeinsparung, bezogen auf die Filterlänge, dieser Platzgewinn dem Filterbett hinzugeschlagen werden kann (Fig. 2a). Dieses wird erreicht, indem auf eine mittig in der Stirnwand der bereits bekannten Kompaktfilter gegründete Lufteintrittsöffnung verzichtet wird (Fig. 1, LE) Anstelle dieser Eintrittsöffnung werden am äußeren Stirnwandrand (Fig. 2a und 2b, S1) mehrere Eintrittsöffnungen (EÖ) gegründet, welche vor der Schwebstoffilterebene (A) platziert sind. Die Anzahl der Öffnungen sind so bemessen, daß die freie Eintrittsfläche im Vergleich zur Einloch-Eintrittsöffnung (LE) gleich bleibt oder größer werden kann. Weiterhin wird erreicht, daß durch Wegfall der zusätzlichen Umlenkung (Fig. 1) über die Umlenkkammer (U) die Fertigungskosten für dieses zylindrische Filter sich um ca. 30% reduzieren.With reference to the already known filters ( Fig. 1), which have an additional deflection (U) internally, according to the invention, by eliminating the deflection, this space saving, based on the filter length, can be added to the filter bed ( Fig . 2a). This is achieved by dispensing with an air inlet opening, which is based in the middle of the end wall of the already known compact filter ( Fig. 1, LE). Instead of this inlet opening, several inlet openings (EÖ) are established on the outer end wall edge ( Fig. 2a and 2b, S1), which placed in front of the particulate filter level (A). The number of openings is dimensioned so that the free entry area remains the same or can become larger compared to the single-hole entry opening (LE). It is also achieved that the elimination of the additional deflection ( FIG. 1) via the deflection chamber (U) reduces the production costs for this cylindrical filter by approximately 30%.
Eine weitere Verringerung des inneren Luftwiderstandes ist zusätzlich möglich, wenn der Platz, der durch Aufhebung der bisher verwendeten Umlenkkammer (U) frei wird, zur Verlängerung der Filterbetten genutzt wird. Dieses hätte wiederum den Vorteil der Vergrößerung der Filterbetten und der Verringerung der Anströmgeschwindigkeit. A further reduction in internal air resistance is also possible if the space that becomes free by lifting the previously used deflection chamber (U), is used to extend the filter beds. This in turn would have the advantage of Enlargement of the filter beds and reduction of the inflow speed.
Eine weitere Verbesserung bezogen auf die unvermeidbare Schrumpfung des Aktivkohlebettes wird erfingungsgemäß in der stirnseitigen Druckausübung gesehen (Fig. 3a und 3b). Es ist bekannt, daß die Aktivkohle (K) unter Ausübung von Druck in das Filterbett in komprimierter Form eingebracht wird. Weiterhin ist bekannt, daß während des Transportes und beim Ein- und Auslagern der Filter sowie während des Einsatzes besonders in mobilen Schutzräumen eine Aufhebung der Komprimierung des Kohlebettes festgestellt wurde. Begründet ist dieser Vorgang durch die äußeren Einwirkungen wie Rütteln, Stoßen, Schwingungen usw., denen das Filter ausgesetzt ist. Die einzelnen Kohlekörner verändern dabei ihre Position, reiben aneinander, verändern ihre äußere Struktur, besonders bei Verwendung von gebrochener Kohle, und rücken somit dichter zusammen. Dieses hat dann zur Folge, daß je nach Lage des Kompaktfilters feinste Freiräume z. B. zwischen Kohlebett und Zylinderstirnwandung entstehen, durch die ungefilterte Luft in den zu schützenden Raum gelangt. Um diesem Vorgang etwas entgegenzusetzen, werden Federelement (Fig. 3a) auf der Innenseite der Filterstirnwand, der dem Kohlebett zugewandten Seite, angebracht. Diese Federelemente sind ihrerseits so konzipiert, daß sie während des Zusammenbaus des Filters keinen Druck oder nur geringen Druck auf das Kohlebett ausüben. Die Federelemente selbst sind mittels Klebstoff zur optimalen Sicherheit und zur Vermeidung von Bypässen gasdicht mit der Stirnseite verbunden. Nach Fertigstellung des Filters wird dann die Federspannkraft der Federelemente (Fig. 3b) durch Druckausübung mittels einer Schraube (B), die ihrerseits auf eine Druckfeder (F) wirkt, hergestellt, so daß ständig Druck auf das Filterbett ausgeübt wird. Hiermit wird erreicht, daß bei der zuvor beschriebenen Schrumpfung des Aktivkohlebettes die Federelemente nachrücken und die Freiraumbildung zwischen Aktivkohlebett (K) und den Zylinderstirnseiten (51, 52) oder zwischen Aktivkohlebett (K) und den Trennwänden (T) unterbunden wird. According to the invention, a further improvement in relation to the inevitable shrinkage of the activated carbon bed is seen in the pressure exerted on the end face (FIGS . 3a and 3b). It is known that the activated carbon (K) is introduced into the filter bed in compressed form while exerting pressure. Furthermore, it is known that the compression of the carbon bed was found to be eliminated during transport and during storage and removal of the filters and during use, particularly in mobile shelters. This process is due to the external influences such as shaking, knocking, vibrations etc. to which the filter is exposed. The individual coal grains change their position, rub against each other, change their external structure, especially when using broken coal, and thus move closer together. This then has the consequence that depending on the position of the compact filter finest spaces z. B. arise between the carbon bed and the cylinder end wall, through which unfiltered air enters the area to be protected. To counter this process somewhat, spring elements ( Fig. 3a) are attached to the inside of the filter end wall, the side facing the carbon bed. These spring elements are in turn designed so that they exert no pressure or only slight pressure on the carbon bed during assembly of the filter. The spring elements themselves are gas-tightly connected to the front side for optimum safety and to avoid bypasses. After completion of the filter, the spring tension of the spring elements ( Fig. 3b) is then produced by applying pressure by means of a screw (B), which in turn acts on a compression spring (F), so that pressure is constantly exerted on the filter bed. This ensures that in the shrinkage of the activated carbon bed described above, the spring elements move up and the formation of free space between the activated carbon bed (K) and the cylinder faces ( 51 , 52 ) or between the activated carbon bed (K) and the partition walls (T) is prevented.
LE Lufteintritt
LA Luftaustritt
LÖ Lufteintrittsöffnung
M Zylindermantel
S1 erste Stirnseite (Lufteintrittsseite)
S2 zweite Stirnseite (Luftaustrittsseite)
T Trenn- bzw. Stützwände durchlässig
U Umlenkkammer
K Kohlebett-Kohlefilter
A Aerosol- bzw. Schwebstoffilter
W Abstandsstege
G Manschette
D Dicht- oder Gleitprofil
R Dichtung
F Druckfeder
B Druckschraube
C Druckring oder Druckplatten
E flexible Dichtung
LE air intake
LA air outlet
LÖ air inlet opening
M cylinder jacket
S1 first end face (air inlet side)
S2 second end face (air outlet side)
T Partitions or retaining walls permeable
U deflection chamber
K carbon bed carbon filter
A Aerosol or particulate filter
W spacers
G cuff
D sealing or sliding profile
R seal
F compression spring
B pressure screw
C pressure ring or pressure plates
E flexible seal
Claims (8)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19914115313 DE4115313C2 (en) | 1991-05-10 | 1991-05-10 | Device for filtering irradiated and toxic aerosols and harmful gases |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19914115313 DE4115313C2 (en) | 1991-05-10 | 1991-05-10 | Device for filtering irradiated and toxic aerosols and harmful gases |
Publications (2)
Publication Number | Publication Date |
---|---|
DE4115313A1 DE4115313A1 (en) | 1992-11-12 |
DE4115313C2 true DE4115313C2 (en) | 2001-11-22 |
Family
ID=6431409
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19914115313 Expired - Fee Related DE4115313C2 (en) | 1991-05-10 | 1991-05-10 | Device for filtering irradiated and toxic aerosols and harmful gases |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE4115313C2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2695184C1 (en) * | 2018-05-11 | 2019-07-22 | Российская Федерация, от имени которой выступает Министерство обороны Российской Федерации | Filter absorber |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IL214041A0 (en) * | 2011-07-12 | 2011-08-31 | Yarok Bair Prot Ind Ltd | Carbon filter device and air filter apparatus |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE939308C (en) * | 1939-06-08 | 1956-02-16 | Draegerwerk Ag | Ring filter filled with gas-binding substances, in particular grained activated carbon, and specifically intended for protective room ventilators |
DE8503332U1 (en) * | 1985-02-07 | 1986-04-10 | Anton Piller GmbH & Co KG, 3360 Osterode | Protective fan |
-
1991
- 1991-05-10 DE DE19914115313 patent/DE4115313C2/en not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE939308C (en) * | 1939-06-08 | 1956-02-16 | Draegerwerk Ag | Ring filter filled with gas-binding substances, in particular grained activated carbon, and specifically intended for protective room ventilators |
DE8503332U1 (en) * | 1985-02-07 | 1986-04-10 | Anton Piller GmbH & Co KG, 3360 Osterode | Protective fan |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2695184C1 (en) * | 2018-05-11 | 2019-07-22 | Российская Федерация, от имени которой выступает Министерство обороны Российской Федерации | Filter absorber |
Also Published As
Publication number | Publication date |
---|---|
DE4115313A1 (en) | 1992-11-12 |
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