DE29509554U1 - Filter for an air extraction device - Google Patents
Filter for an air extraction deviceInfo
- Publication number
- DE29509554U1 DE29509554U1 DE29509554U DE29509554U DE29509554U1 DE 29509554 U1 DE29509554 U1 DE 29509554U1 DE 29509554 U DE29509554 U DE 29509554U DE 29509554 U DE29509554 U DE 29509554U DE 29509554 U1 DE29509554 U1 DE 29509554U1
- Authority
- DE
- Germany
- Prior art keywords
- filter
- air
- housing
- filter housing
- air inlet
- 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 - Lifetime
Links
- 238000000605 extraction Methods 0.000 title claims description 6
- 239000000463 material Substances 0.000 claims description 16
- 244000309464 bull Species 0.000 claims 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 8
- 238000001914 filtration Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
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
- B01D46/0002—Casings; Housings; Frame constructions
-
- 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
-
- 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
- B01D46/30—Particle separators, e.g. dust precipitators, using loose filtering material
-
- 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
- B01D53/0446—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
- B01D2265/00—Casings, housings or mounting for filters specially adapted for separating dispersed particles from gases or vapours
- B01D2265/06—Details of supporting structures for filtering material, e.g. cores
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)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
- Separation By Low-Temperature Treatments (AREA)
Description
Die Erfindung betrifft einen Filter für eine Luftabsaugvorrichtung, wobei zur Aufnahme des Filtermaterials ein Filtergehäuse mit mindestens einer Luftaustrittsöffnung vorgesehen ist. Filter der eingangs genannten Art sind als sogenannte austauschbare Filterpatronen bekannt. Eine derartige Filterpatrone besitzt ein im wesentlichen bis auf eine Lufteinlaß- und eine Luftauslaßöffnung geschlossenes Gehäuse, wobei in dem Gehäuse eine Packung aus Filtermaterial, z. B. Aktivkohle, angeordnet ist. Derartige bekannte Filter, beispielweise in Form von Filterkassetten, haben nur eine geringe Standzeit; der Grund hierfür ist darin zu finden, daß die angesaugte Luft auf kürzestem Weg den Filter vom Lufteintritt zum Luftaustritt durchströmt. Hierbei gelangt die angesaugte Luft naturgemäß nicht mit sämtlichem im Gehäuse befindlichen Filtermaterial in Berührung, sondern nur mit dem Filtermaterial, das sich unmittelbar im Luftweg befindet.The invention relates to a filter for an air extraction device, whereby a filter housing with at least one air outlet opening is provided for receiving the filter material. Filters of the type mentioned at the beginning are known as so-called replaceable filter cartridges. Such a filter cartridge has a housing that is essentially closed except for an air inlet and an air outlet opening, whereby a pack of filter material, e.g. activated carbon, is arranged in the housing. Such known filters, for example in the form of filter cassettes, have only a short service life; the reason for this is that the sucked-in air flows through the filter from the air inlet to the air outlet via the shortest possible path. In this case, the sucked-in air naturally does not come into contact with all of the filter material in the housing, but only with the filter material that is directly in the air path.
-2--2-
Postgiroamt: Bankkonten: ···· ·· ··· ·· ·· ··· · »Vat-No· Postgiroamt: Bank accounts: ···· ··· ··· ··· ··· · »Vat-No·
Franklurt/Main Raiffeisenbank Stadisparkasse DE 113096952Frankfurt/Main Raiffeisenbank Stadisparkasse DE 113096952
&igr; &lgr;&ggr;\&pgr; cr\ *&tgr;&lgr;&ogr; /nr r? &egr;&lgr;&lgr; mr\ £&Ggr;\\ iCTiK !/DI7 &iacgr;1&Lgr; inc &Igr; &idiagr;\ &Igr; &Lgr;&Pgr; AIQi /Dl 7 <1&iacgr;&idiagr; &zgr;&Lgr; I 1^ 1 \&igr;&lgr;&ggr;\&pgr; cr\ *&tgr;&lgr;&ogr; /nr r? ε&lgr;&lgr; mr\ £&Ggr;\\ iCTiK !/DI7 &iacgr;1&Lgr; inc &Igr;&idiagr;\&Igr;&Lgr;&Pgr; AIQi /Dl 7 <1&iacgr;&idiagr;&zgr;&Lgr; I 1 ^ 1 \
-2--2-
Das heißt, daß das unmittelbar im Luftweg befindliche Filtermaterial relativ schnell seine Filterkapazität verliert mit der Folge, daß der gesamte Filter ausgetauscht werden muß, obwohl noch ein wesentlicher Teil der darin befindlichen Filtermaterialien durchaus in der Lage wäre, seine filternde Wirkung zu entfalten.This means that the filter material located directly in the air path loses its filtering capacity relatively quickly, with the result that the entire filter must be replaced, although a significant portion of the filter materials contained therein would still be able to exert their filtering effect.
Der Erfindung liegt daher die Aufgabe zugrunde, einen Filter der eingangs genannten Art zu schaffen, mit dem sichergestellt ist, daß das in dem Filter befindliche Filtermaterial im wesentlichen vollständig von der angesaugten, zu reinigenden Luft durchströmt wird.The invention is therefore based on the object of creating a filter of the type mentioned at the outset, with which it is ensured that the filter material located in the filter is essentially completely flowed through by the sucked-in air to be cleaned.
Die Aufgabe wird erfindungsgemäß dadurch gelöst, daß das Filtergehäuse auf seinem Umfang verteilt, mehrere Lufteintrittsöffnungen aufweist. D. h., daß die zu reinigende Luft nicht nur an einer Stelle des Filters bzw. des Filtergehäuses eingesaugt wird, sondern an vielen Stellen, was zur Folge hat, daß sämtliches im Bereich der öffnungen befindliche Filtermaterial von der angesaugten, zu reinigenden Luft durchströmt wird.The object is achieved according to the invention in that the filter housing has several air inlet openings distributed around its circumference. This means that the air to be cleaned is not only sucked in at one point in the filter or filter housing, but at many points, which means that all of the filter material located in the area of the openings is flowed through by the sucked-in air to be cleaned.
Ein weiterer Vorteil eines derartigen Filters liegt darin, daß durch die zylindrische Form des Filters eine Vergrößerung der Anströmfläche und damit des Luftmengendurchsatzes gewährleistet wird.A further advantage of such a filter is that the cylindrical shape of the filter ensures an increase in the inflow area and thus in the air flow rate.
Eine besonders vorteilhafte Ausführungsform eines Filtergehäuses zeichnet sich dadurch aus, daß ein in das Filtergehäuse hineinragender Ansaugstutzen vorgesehen ist, dessen eines aus dem Filtergehäuse ragende Ende mit einer Luftansaugvorrichtung verbindbar ist, wobei der im Filtergehäuse befindliche Teil des Stutzen auf seinem Umfang verteilt mehrere Lufteintrittsöffnungen aufweist. Durch eine derartige Anordnung eines Luftansaugstutzens in dem das Filtermaterial aufnehmenden Filtergehäuse wird eine im wesentlichen gleichmäßige Durchströmung des Filtermaterials, z. B. Aktivkohle, erreicht. Um den Luftwiderstand beim Ansaugen der Luft in den Ansaugstutzen über den Umfang des Stutzens im wesentlichen gleichzuhalten, ist vorgesehen, daßA particularly advantageous embodiment of a filter housing is characterized in that an intake nozzle is provided that protrudes into the filter housing, one end of which protrudes from the filter housing and can be connected to an air intake device, whereby the part of the nozzle located in the filter housing has several air inlet openings distributed over its circumference. By arranging an air intake nozzle in this way in the filter housing that accommodates the filter material, a substantially uniform flow through the filter material, e.g. activated carbon, is achieved. In order to keep the air resistance when sucking air into the intake nozzle essentially the same over the circumference of the nozzle, it is provided that
— 3——3—
die Lufteintrittsöffnungen im Ansaugstutzen untereinander etwa den gleichen Querschnitt aufweisen. Dem gleichen Ziel dient die Maßnahme, wonach die Lufteintrittsöffnungen im Filtergehäuse untereinander ebenfalls etwa den gleichen Querschnitt aufweisen.the air inlet openings in the intake manifold have approximately the same cross-section. The same goal is served by the measure whereby the air inlet openings in the filter housing also have approximately the same cross-section.
Ein besonders einfach und damit preiswert herzustellendes Filtergehäuse zeichnet sich dadurch aus, daß es zylindrisch ausgebildet ist. Um wiederum eine gleichmäßige Umströmung des Filtermaterials mit der anzusaugenden Luft zu gewährleisten, ist der Ansaugstutzen ebenfalls zylindrisch ausgebildet. Vorteilhaft ist hierbei der Ansaugstutzen an seinem dem luftaustrittseitigen Ende entgegengesetzten Ende geschlossen. Wäre an dieser Seite der Ansaugstutzen offen ausgebildet, so würde hier, da der Luftwiderstand an dieser Stelle dann am geringsten wäre, die größte Luftmenge durch das Filtermaterial eingesaugt werden, mit der Folge, daß wiederum große Teile des Filtermaterials - vorteilhaft Aktivkohle am Reinigungsvorgang nicht beteiligt sindA filter housing that is particularly simple and therefore inexpensive to manufacture is characterized by its cylindrical design. In order to ensure that the air to be sucked in flows evenly around the filter material, the intake nozzle is also cylindrical. The intake nozzle is advantageously closed at the end opposite the air outlet. If the intake nozzle were open on this side, the largest amount of air would be sucked in through the filter material here, as the air resistance would then be at its lowest point, with the result that large parts of the filter material - preferably activated carbon - are not involved in the cleaning process.
Fig. 1 zeigt die Luftabsaugvorrichtung im Schnitt;Fig. 1 shows the air extraction device in section;
Fig. 2 zeigt einen Schnitt gemäß der Linie II-II aus Fig.Fig. 2 shows a section along the line II-II of Fig.
Gemäß Fig. 1 besteht die insgesamt mit 1 bezeichnete Luftabsaugvorrichtung aus einem Gehäuse 2, das in zwei Kammern 3 und 4 unterteilt ist. Die Kammer 4 weist eine öffnung 4a zur Aufnahme beispielsweise eines Absaugrohres auf, wohingegen die Kammer 3 mehrere öffnungen 3a zum Auslaß der Luft besitzt. In der Kammer 3 befindet sich das Gebläse 5, das durch die Trennwand 6 hindurch mit dem eigentlichen Filter 7 verbunden ist. Der Filter 7 besteht aus einem zylindrischen Filtergehäuse 8, das nach Art eines Lochbleches mit Löchern 8a zum Durchlaß der angesaugten Luft versehen ist. Im Inneren des Filtergehäuses 8 befindet sich der Luftansaugstutzen 9, der auf seinem Umfang verteilt ebenfalls Löcher 9a aufweist. In dem verbleibenden Hohlraum zwischen dem Gehäuse 8 und dem Stutzen 9 befindet sich das Filtermaterial, beispielsweise Aktivkohle. Der Ansaugstutzen 9 ist an seinem luftaustrittseitigem Ende 9b verschlossen.According to Fig. 1, the air extraction device, designated as a whole by 1, consists of a housing 2, which is divided into two chambers 3 and 4. The chamber 4 has an opening 4a for receiving, for example, an extraction pipe, whereas the chamber 3 has several openings 3a for the outlet of the air. The blower 5 is located in the chamber 3 and is connected to the actual filter 7 through the partition wall 6. The filter 7 consists of a cylindrical filter housing 8, which is provided with holes 8a in the manner of a perforated plate for the passage of the sucked-in air. Inside the filter housing 8 is the air intake nozzle 9, which also has holes 9a distributed around its circumference. The remaining cavity between the housing 8 and the nozzle 9 contains the filter material, for example activated carbon. The intake nozzle 9 is closed at its air outlet end 9b.
Dies deshalb, um die in die Kammer 4 eintretende Luft über das gesamte Filtermaterial verteilt durch den Filter strömen zu lassen.This is to allow the air entering chamber 4 to flow through the filter, distributed over the entire filter material.
Claims (7)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE29509554U DE29509554U1 (en) | 1995-06-10 | 1995-06-10 | Filter for an air extraction device |
DE19615825A DE19615825C2 (en) | 1995-06-10 | 1996-04-20 | Filter for an air extraction device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE29509554U DE29509554U1 (en) | 1995-06-10 | 1995-06-10 | Filter for an air extraction device |
Publications (1)
Publication Number | Publication Date |
---|---|
DE29509554U1 true DE29509554U1 (en) | 1995-08-24 |
Family
ID=8009197
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE29509554U Expired - Lifetime DE29509554U1 (en) | 1995-06-10 | 1995-06-10 | Filter for an air extraction device |
DE19615825A Expired - Fee Related DE19615825C2 (en) | 1995-06-10 | 1996-04-20 | Filter for an air extraction device |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19615825A Expired - Fee Related DE19615825C2 (en) | 1995-06-10 | 1996-04-20 | Filter for an air extraction device |
Country Status (1)
Country | Link |
---|---|
DE (2) | DE29509554U1 (en) |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5041146A (en) * | 1988-08-04 | 1991-08-20 | Simmerlein Erlbacher E W | Filter apparatus |
-
1995
- 1995-06-10 DE DE29509554U patent/DE29509554U1/en not_active Expired - Lifetime
-
1996
- 1996-04-20 DE DE19615825A patent/DE19615825C2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
DE19615825A1 (en) | 1996-12-12 |
DE19615825C2 (en) | 1998-03-12 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
R207 | Utility model specification |
Effective date: 19951005 |
|
R150 | Utility model maintained after payment of first maintenance fee after three years |
Effective date: 19980714 |
|
R157 | Lapse of ip right after 6 years |
Effective date: 20020403 |