WO1995019216A2 - Air filtration unit with a thermal device for disinfecting its filter cells and its interior surfaces - Google Patents
Air filtration unit with a thermal device for disinfecting its filter cells and its interior surfaces Download PDFInfo
- Publication number
- WO1995019216A2 WO1995019216A2 PCT/EP1995/000157 EP9500157W WO9519216A2 WO 1995019216 A2 WO1995019216 A2 WO 1995019216A2 EP 9500157 W EP9500157 W EP 9500157W WO 9519216 A2 WO9519216 A2 WO 9519216A2
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- WIPO (PCT)
- Prior art keywords
- air
- filter
- filter unit
- unit
- cell
- Prior art date
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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
- B01D46/0027—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions
- B01D46/0028—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions provided with antibacterial or antifungal means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
- F24F8/108—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering using dry filter elements
-
- 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
- B01D46/0095—Means acting upon failure of the filtering system, e.g. in case of damage of the filter elements; Failsafes
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- 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
- B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
-
- 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
- B01D46/42—Auxiliary equipment or operation thereof
- B01D46/44—Auxiliary equipment or operation thereof controlling filtration
- B01D46/448—Auxiliary equipment or operation thereof controlling filtration by temperature measuring
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- 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
- B01D46/56—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition
- B01D46/62—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition connected in series
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2273/00—Operation of filters specially adapted for separating dispersed particles from gases or vapours
- B01D2273/20—High temperature filtration
Definitions
- G 93 08 937.6 describes a particulate filter cell that can be thermally sterilized by an electrical heating device installed in the filter cell.
- This filter cell is not commercially available. It is complex due to the necessary heating installations. A filter change - as it can be relatively easy for hygiene and precautionary reasons - becomes correspondingly expensive. The prospect of high operating costs will make their installation more difficult in borderline cases.
- the object of the invention is to design the technology and the method so that an air filter unit according to the invention uses
- the temperature profile can be controlled as required: i.e. stepped temperatures; Holding times, shock temperature, etc.
- the filter cells are disposed of in the normal way
- the thermally sterilized filter unit can be cooled down again by means of ventilation with cold air.
- Filter cell (s) (3), (3.1) and the inner walls of the housing (1) is effected by means of a hot air stream, which is optionally in the
- Normal filter operation can be resumed after the unit has cooled down.
- a filter unit (20) with housing (1) and in it the working filter cell (s) (3), and - if necessary - the safety filter cell (s) (3.1), is an exhaust air filter for dangerous air or germs is a supply air filter for sterile rooms. Germs must be caught on the filter cell (3). Their multiplication and propagation must be prevented. The formation of fungi and the emission of spores on the clean air side must also be prevented, so that there can be no danger from the filter unit (20).
- the filter chamber (1) is separated from the supply air duct (5) and the clean air duct (6) by means of the butterfly valves (7) and (8).
- hot air / gas is blown into the supply air chamber (1.1) via the heating unit (14) and the connection (9), from there via the working filter cell (s) (3) and heats it up into the clean air chamber (1.2) where it heats the safety filter cell (s) (3.1) (if installed). From there, the hot air / hot gas passes back to the hot gas blower (14.1) via the hot gas return connection (10) and the switchover flap (14.2) set to air recirculation mode
- the present example lies outside the filter housing (1) and, in the case of an internal construction, can be in the supply air chamber (1.1) or in the clean air chamber (1.2).
- the hot air discharge connection (11) If the hot air / hot gas cannot be removed via the clean air duct (6) - and this should be the rule - the hot air discharge connection (11), a hot gas discharge flap (17) and a discharge pipe (12) must also be installed , and the air must be blown off through this special outlet (because of the danger when the system is warmed up).
- the temperature is measured using the temperature indicators / switches (TIS) (15) and (16).
- the control system (13) ensures the regular course of a periodic disinfection.
- the condition of the working filter cell (s) (3) can be checked during sterilization in connection with a defined circulation or fresh air quantity. Whether the filter cell (s) is (are) suitable for further use, i.e. The difference in pressure measured with a defined volume flow can be used to automatically determine whether it is (are) still capable of receiving additional filter material.
- the final state of the filter cell (s) is signaled when a set switching point is reached on the differential pressure sensor (18). After the thermal treatment, the filter cells (3) and (3.1), the inner surfaces of the housing (1) and all other inner surfaces can be considered as germ-free. Access to the interior of the filter unit (20), the removal of filter cells and the replacement of other components are carried out safely.
Abstract
An air filtration unit with a thermal device for disinfecting its cells and its interior surfaces is designed as a heating or radiation device installed outside the filter cells.
Description
Bezeichnungdescription
Luftfiltereinheit(20) mit einer thermisch wirkenden Einrichtung zur Entkeimung ihrer Filterzelle(n) (3), (3.1) und ihrer inneren Oberflächen.Air filter unit (20) with a thermally acting device for disinfecting its filter cell (s) (3), (3.1) and its inner surfaces.
Stand der TechnikState of the art
Abluft aus Laboratorien, Forschungseinrichtungen, Kliniken, pharmazeutischen und anderen Einrichtungen kann gefähr- liches Filtergut in Filtern ablagern. Gemeint sind Krank¬ heitserreger, Pilze und Pilzsporen, sowie anderes Zellgut, das sich im Filter und auf dessen Oberflächen ansammelt, oder auch solches, das sich dort erst bildet. In Einrichtungen der Genforschung können auch genmodi- fizierte Zellen hinzukommen. Alle diese Keime sollen/dürfen dann nicht in die gefilderte Luft gelangen, wenn dies eine Gefahr für Mensch und Umwelt bedeutet.Exhaust air from laboratories, research facilities, clinics, pharmaceutical and other facilities can store dangerous filter material in filters. What is meant are pathogens, fungi and fungal spores, as well as other cell material that accumulates in the filter and on its surfaces, or also one that only forms there. Genetically modified cells can also be added to genetic research facilities. All of these germs should not / must not get into the portrayed air if this poses a danger to people and the environment.
Die G 93 08 937.6 beschreibt eine Schwebstoffilterzelle, die thermisch entkeimt werden kann durch eine in der Filterzelle angebrachte elektrische Beheizeinrichtung.G 93 08 937.6 describes a particulate filter cell that can be thermally sterilized by an electrical heating device installed in the filter cell.
Diese Filterzelle ist nicht handelsüblich. Sie ist aufgrund der erforderlichen Beheizeinbauten aufwendig. Ein Filterwechsel - wie er aus Hygiene-und Vorsichtsgründen relativ freguent sein kann - wird entsprechend teuer. Die Aussicht auf hohe Betriebskosten wird in Grenzfällen deren Installation erschweren.This filter cell is not commercially available. It is complex due to the necessary heating installations. A filter change - as it can be relatively easy for hygiene and precautionary reasons - becomes correspondingly expensive. The prospect of high operating costs will make their installation more difficult in borderline cases.
Ein weiterer nicht zu unterschätzender Nachteil der beheiz¬ ten Filterzelle ist der in der Filtereinheit an den Innen¬ wänden der Filtereinheit anhaftende Staub, der wie auch das Filtergut in der Filterzelle gefährlich sein kann und als Nährboden für eine Keim-Entwicklung/Vermehrung zur Ver¬ fügung steht. Weil diese Flächen trotz einer Entkeimung der Filterzelle gefährlich bleiben, ist der Umgang mit der geöffneten Filtereinheit nicht unproblematisch.Another disadvantage of the heated filter cell, which should not be underestimated, is the dust adhering to the inside walls of the filter unit in the filter unit, which, like the filter material in the filter cell, can be dangerous and serves as a breeding ground for the development / multiplication of germs is standing. Because these surfaces remain dangerous despite the filter cell being disinfected, handling the opened filter unit is not without problems.
Aufgabe der Erfindung ist es, die Technik und das Verfahren so zu gestalten, daß eine erfindungsgemäße Luftfiltereinheit den Einsatz vonThe object of the invention is to design the technology and the method so that an air filter unit according to the invention uses
Standard-Schwebstoffilterzellen zuläßt.Standard particulate filter cells allows.
Erreicht wird die Lösung durch eine außerhalb der Filterzelle(n) installierte, alsoThe solution is achieved by installing an outside of the filter cell (s)
ORIGINALUNTERLAGEN
indirekte Beheiztechnik, die vorzugsweise so gestaltet ist:ORIGINAL DOCUMENTS indirect heating technology, which is preferably designed as follows:
- als Umluftsystem mit elektrischer Beheizung, wobei die Filterzelle(n) von Heißluft durchströmt wird(werden) , - mittels Durchblasen von Heißluft für eine bestimmte Zeit,- as a circulating air system with electrical heating, hot air flowing through the filter cell (s), - by blowing hot air through for a certain time,
- oder durch Bestrahlung der Filterzelle(n) ,- or by irradiation of the filter cell (s),
Vorteile wie diese sind mit der erfindungsgemäßen Technik verbunden: - Verwendung m.o.w.handelsüblicher Schwebstoffilterzellen,-Advantages such as these are associated with the technology according to the invention: use of commercially available particulate filter cells,
- die nachtägliche Installation der erfindungsgemäßen Technik wird möglich (Nachrüstbarkeit) ;- The nightly installation of the technology according to the invention is possible (retrofittability);
- wird mit Heißluft gearbeitet, kann der Temperaturverlauf wunschgemäß gesteuert werden: d.h. gestufte Temperaturen; Haltezeiten, Schocktemperatur, etc.- If hot air is used, the temperature profile can be controlled as required: i.e. stepped temperatures; Holding times, shock temperature, etc.
- es ist sowohl im Durchblasverfahren als auch im Umluft- betrieb sicherstellbar, daß die Behandlungsluft nicht im zu schützenden Luftsystem bleibt, sondern separariert werden kann; - der Filterwechsel ist völlig unkritisch. Die sog. 'Sack¬ wechselmethode'ist nicht erforderlich;- It can be ensured both in the blow-through process and in recirculation mode that the treatment air does not remain in the air system to be protected, but can be separated; - the filter change is completely uncritical. The so-called 'bag change method' is not necessary;
- die Entsorgung der Filterzellen erfolgt über die normalen Wege;- The filter cells are disposed of in the normal way;
- die thermisch entkeimte Filtereinheit kann mittels der Ventilation mit Kaltluft wieder abgekühlt werden.- The thermally sterilized filter unit can be cooled down again by means of ventilation with cold air.
In einem Ausführungsbeispiel wird in Fig.l das Schema einer bevorzugten Filtereinheit(20) erklärt. Die (thermische) Entkeimung derIn one embodiment, the diagram of a preferred filter unit (20) is explained in FIG. The (thermal) disinfection of the
Filterzelle(n) (3), (3.1) und der Innenwände des Gehäuses(1) wird mittels eines Heißluftstromes bewirkt, der wahlweise imFilter cell (s) (3), (3.1) and the inner walls of the housing (1) is effected by means of a hot air stream, which is optionally in the
Durchgangsbetrieb, im Umluftbetrieb, sowie auch im kombinierten Betrieb schaltbar ist. Nach Herstellen und Halten geeigneter Temperaturen sind alleThrough operation, in recirculation mode, as well as in combined operation is switchable. After establishing and maintaining suitable temperatures, all are
Keime - sowohl in und an der Filterzelle, sowie auch an denGerms - both in and on the filter cell, as well as on the
Wänden innerhalb des Filtergehäuses(1) und der FiltereinheitWalls inside the filter housing (1) and the filter unit
(20) - abgetötet.(20) - killed.
Der normale Filterbetrieb kann nach Abkühlung der Einheit wieder aufgenommen werden.Normal filter operation can be resumed after the unit has cooled down.
In dieser Einrichtung sind: (1) das Filtergehäuse,In this facility are: (1) the filter housing,
(1.1) die Zuluftkammer,(1.1) the supply air chamber,
(1.2) die Reinluftkammer,(1.2) the clean air chamber,
(1.3) die Spannfläche zum Auflegen und Spannen der Filterzelle(n) (3) , (3.1) ,
(2) die Tür zum Gehäuse (1),(1.3) the clamping surface for placing and clamping the filter cell (s) (3), (3.1), (2) the door to the housing (1),
(3) die Arbeitsfilterzelle (n) , (3.1) die Sicherheitsfilterzelle(n) ,(3) the working filter cell (s), (3.1) the safety filter cell (s),
(4) die Dichtung der Filterzelle(n) (3) und (3.1) zur Spannfläche(1.3) ,(4) the seal of the filter cell (s) (3) and (3.1) to the clamping surface (1.3),
(5) der Zuluftkanal,(5) the supply air duct,
(6) der Reinluftkanal, (7) die Zuluftabsperrklappe mit ihrem Antrieb (Ml) ,(6) the clean air duct, (7) the supply air shut-off damper with its actuator (Ml),
(8) die Reinluftabsperrklappe mit ihrem Antrie (M2),(8) the clean air butterfly valve with its drive (M2),
(9) der Heißgas-Zuführanschluß,(9) the hot gas supply port,
(10) der Heißgas-Rückführanschluß,(10) the hot gas return port,
(11) der Heißgas-Abführanschluß, (12) das Heißgas-Abführrohr,(11) the hot gas discharge connection, (12) the hot gas discharge pipe,
(13) das Steuersystem für (7) , (8) ,und(14)bis (17) ,(13) the control system for (7), (8), and (14) to (17),
(14) die Erhitzereinheit,(14) the heater unit,
(14.1) das Heißgasgebläse,(14.1) the hot gas blower,
(14.2) die Umschaltklappe mit ihrem Antrieb (M5) , (14.3) der Frischluft-Anschluß,(14.2) the switching flap with its drive (M5), (14.3) the fresh air connection,
(14.4) der Erhitzer,(14.4) the heater,
(14.5) das Heißgas-Absperrventil mit seinem Antrieb(M4) ,(14.5) the hot gas shut-off valve with its drive (M4),
(15) der Temperaturfühler/-Schalter in der Zuluft- kammer(1.1) , (16) der Temperaturfühler/-Schalter in der Reinluft¬ kammer(1.2) ,(15) the temperature sensor / switch in the supply air chamber (1.1), (16) the temperature sensor / switch in the clean air chamber (1.2),
(17) die Heißgas-Abführklappe mit ihrem Antrieb(M3),(17) the hot gas discharge flap with its drive (M3),
(18) der Differenzdrucksensor(PIS) mit Schalter,(18) the differential pressure sensor (PIS) with switch,
(19.1) der Zuluftström am Eintritt in die Filtereinheit (20] (19.2) der Reinluftstrom am Austritt der Filtereinheit (20) ,(19.1) the supply air flow at the inlet to the filter unit (20) (19.2) the clean air flow at the outlet of the filter unit (20),
(20) die erfindungsgemäße Filtereinheit.(20) the filter unit according to the invention.
Eine Filtereinhei (20) mit Gehäuse(1) und in diesem sitzen- der(den) Arbeitsfilterzelle (n) (3) , und- wenn erforderlich - die Sicherheitsfilterzelle(n) (3.1) , ist Abluftfilter für eine gefährliche Keime tragende Luft oder ist Zuluftfilter für keimfrei zu haltende Räume. Keime sind an der Filter¬ zelle(3) zu fangen. Deren Vermehrung und Forttragen ist zu verhindern. Auch die Bildung von Pilzen und die Aussendung von Sporen auf die Reinluftseite sind zu verhindern, sodaß von der Filtereinheit (20) keine Gefahr ausgehen kann. Im vorliegenden Beispiel wird die Filterkammer(1) mittels der Absperrklappen(7)und(8) vom Zuluftkanal (5) und vom Reinluftkanal (6) getrennt.
Während der thermischen Entkeimung wird über die Erhitzereiheit(14) und den Anschluß(9) Heißluft/-gas in die Zuluftkammer(1.1) geblasen, von dort über die Arbeits- Filterzelle(n) (3) und diese erhitzend in die Reinluft- kammer(1.2), wo sie die Sicherheitsfilterzelle(n) (3.1) erhitzt (falls solche installiert sind) . Von dort aus gelangt die/das Heißluft/Heißgas über den Heißgas- Rückführanschluß(10) und über die auf Umluftbetrieb gestellte Umschaltklappe(14.2) zurück zum Heißgasgebläse (14.1), von dem aus es wieder über den Erhitzer(14.4) gelangt, der im vorliegenden Beispiel außerhalb des Filter¬ gehäuses(1) liegt, und bei interner Bauweise in der Zuluft¬ kammer(1.1) oder in der Reinluftkammer(1.2) liegen kann. Wenn die/das Heißluft/Heißgas nicht über den Reinluft- kanal(6) abführbar ist - und das sollte die Regel sein, sind zusätzlich der Heißluftabführanschluß(11) , eine Heißgas-Abführklappe(17) , und ein Abführrohr(12) zu installieren, und die Luft ist über diesen Sonderausgang abzublasen (wegen der Gefahr beim Warmfahren des Systems) . Die Temperatur wird mittels der Temperatur-Anzeiger/- Schalter(TIS) (15)und(16) gemessen.A filter unit (20) with housing (1) and in it the working filter cell (s) (3), and - if necessary - the safety filter cell (s) (3.1), is an exhaust air filter for dangerous air or germs is a supply air filter for sterile rooms. Germs must be caught on the filter cell (3). Their multiplication and propagation must be prevented. The formation of fungi and the emission of spores on the clean air side must also be prevented, so that there can be no danger from the filter unit (20). In the present example, the filter chamber (1) is separated from the supply air duct (5) and the clean air duct (6) by means of the butterfly valves (7) and (8). During the thermal disinfection, hot air / gas is blown into the supply air chamber (1.1) via the heating unit (14) and the connection (9), from there via the working filter cell (s) (3) and heats it up into the clean air chamber (1.2) where it heats the safety filter cell (s) (3.1) (if installed). From there, the hot air / hot gas passes back to the hot gas blower (14.1) via the hot gas return connection (10) and the switchover flap (14.2) set to air recirculation mode The present example lies outside the filter housing (1) and, in the case of an internal construction, can be in the supply air chamber (1.1) or in the clean air chamber (1.2). If the hot air / hot gas cannot be removed via the clean air duct (6) - and this should be the rule - the hot air discharge connection (11), a hot gas discharge flap (17) and a discharge pipe (12) must also be installed , and the air must be blown off through this special outlet (because of the danger when the system is warmed up). The temperature is measured using the temperature indicators / switches (TIS) (15) and (16).
Das Steuersystem(13) sorgt für den geregelten Gang einer periodischen Entkeimung. Mittels des Differenzdrucksensors und-Schalters (PIS) (18) kann beim Entkeimen in Verbindung mit einer definierten Kreislauf-oder Frischluftmenge der Zustand der Arbeits¬ filterzelle(n) (3) überprüft werden. Ob die Filterzelle(n) für den weiteren Einsatz geeignet ist(sind), d.h. ob sie für weiteres Filtergut noch aufnahmefähig ist(sind), läßt sich anhand des mit definiertem Volumenstrom gemessenen Differenzdruckes automatisch treffen. Der Endzustand der Filterzelle(n) wird durch das Erreichen eines eingestellten Schaltpunktes am Differenzdrucksensor(18) signalisiert. Nach der thermischen Behandlung können die Filterzellen(3) und(3.1), die inneren Flächen des Gehäuses(1), sowie alle anderen inneren Oberflächen als keimfrei gelten. Der Zugang zum Inneren der Filtereinheit(20) , die Entnahme von Filterzellen, und der Austausch von anderen Bauteilen erfolgen gefahrfrei.
The control system (13) ensures the regular course of a periodic disinfection. By means of the differential pressure sensor and switch (PIS) (18), the condition of the working filter cell (s) (3) can be checked during sterilization in connection with a defined circulation or fresh air quantity. Whether the filter cell (s) is (are) suitable for further use, i.e. The difference in pressure measured with a defined volume flow can be used to automatically determine whether it is (are) still capable of receiving additional filter material. The final state of the filter cell (s) is signaled when a set switching point is reached on the differential pressure sensor (18). After the thermal treatment, the filter cells (3) and (3.1), the inner surfaces of the housing (1) and all other inner surfaces can be considered as germ-free. Access to the interior of the filter unit (20), the removal of filter cells and the replacement of other components are carried out safely.
Claims
1. Luftfiltereinheit(20) ,geeignet für gesundheitsgefährdende Keime tragende Abluft/Abgase mit einer vorzugsweise thermisch wirkenden Einrichtung zur Entkeimung ihrer eingebauten Filterzelle(n) (3), (3.1) und der inneren Oberflächen der Filtereinheit(20) d e r g e s t a l t , daß eine außerhalb der Filterzelle(n) (3), (3.1) instal- lierte, vorzugsweise elektrisch betriebene Beheiz-oder/ und Bestrahl-Einrichtung(14.4) , (14.5) die Filterzelle(n) und die inneren Oberflächen der Luftfiltereinheit(20) so erhitzt, daß dort aufsitzende oder dort sich entwickelnde Keime nach einer angemessenen Hochttemperatur-Haltezeit abgetötet. werden.1. Air filter unit (20), suitable for health-endangering germ-carrying exhaust air / exhaust gases with a preferably thermally acting device for disinfecting their built-in filter cell (s) (3), (3.1) and the inner surfaces of the filter unit (20) such that one outside the filter cell (s) (3), (3.1) installed, preferably electrically operated heating or / and irradiation device (14.4), (14.5) the filter cell (s) and the inner surfaces of the air filter unit (20) heated in this way that germs sitting there or developing there are killed after an appropriate high-temperature holding time. become.
2. Luftfiltereinheit nach Anspruch 1 d e r g e s t a l t , daß die Beheizung mittels Heizgas erfolgt.2. Air filter unit according to claim 1 d e r g e s t a l t that the heating is carried out by means of heating gas.
3. Luftfiltereinheit(20) nach Anspruch 1 und 2 d e r g e s t a l t , daß beim Entl -imungsvorgang heiße/s Luft/Gas mittels Gebläse(14.1, durch die Luftfiltereinheit(20) Vorzugs- weise von der kontaminierten Seite des Filtergehäuses(1) aus durch die Filterzelle(n) (3), (3.1) gefördert wird, daß diese/s Luft/Gas vor oder nach dem Heißgasgebläse(14.1) durch einen Erhitzer(14.4) aufgeheizt wird, im Kreis¬ lauf durch die Luftfiltereinheit(20) führbar ist, oder diese nur einmal durchströmt, um dann am Reinluft¬ auslaß(6) bzw. an einem gesonderten Auslaß(12) aus der Einheit entlassen zu werden.3. Air filter unit (20) according to claim 1 and 2 such that during the Entl -imungsvorgang hot / s air / gas by means of fans (14.1, through the air filter unit (20) preferably from the contaminated side of the filter housing (1) through the Filter cell (s) (3), (3.1) is promoted such that this air / gas before or after the hot gas blower (14.1) is heated by a heater (14.4) and can be circulated through the air filter unit (20) , or flows through it only once, in order then to be released from the unit at the clean air outlet (6) or at a separate outlet (12).
4. Luftfiltereinheit(20) nach Anspruch 1 und 2 d e r g e s t a l t , daß die Führung der(des) Heißluft(Heißgases) auch in ent¬ gegengesetzter Richtung zur Arbeitsrichtung des Filters, d.h. zuerst über das Sicherheitsfilter(3.1) und dann über das Arbeitsfilter(3) erfolgt.4. Air filter unit (20) according to claim 1 and 2 d e r g e s t a l t that the guidance of the (the) hot air (hot gas) also in the opposite direction to the working direction of the filter, i.e. first via the safety filter (3.1) and then via the working filter (3).
5. Luftfiltereinheit(20) nach den Ansprüchen 1, 2, und 3 d e r g e s t a l t , daß die/das zu erhitzende Luft/Gas von außerhalb über einen Ansaugstutzen(14.3) oder vom Zuluftkanal(5) heranführbar ist. 5. Air filter unit (20) according to claims 1, 2 and 3 in such a way that the / the air / gas to be heated can be brought up from outside via an intake port (14.3) or from the supply air duct (5).
6. Luftfiltereinheit(20) nach den Ansprüchen l, 2, und 3 d e r g e s t a l t , daß die Erhitzereinheit(14) und sowie Teile derselben wahlweise innerhalb des Filtergehäuses(1) oder außerhalb dessen installiert sind.6. Air filter unit (20) according to claims l, 2, and 3 d e r g e s t a l t that the heater unit (14) and parts thereof are optionally installed inside the filter housing (1) or outside of it.
7. Luftfiltereinheit nach Anspruch 1 d e r g e s t a l t , daß auch Licht aussendende Strahler einsetzbar sind.7. Air filter unit according to claim 1, that light-emitting radiators can also be used.
8. Luftfiltereinheit(20) nach den Ansprüchen 1 bis 6 d e r g e s t a l t , daß anstatt eines oder zusätzlich zu einem außerhalb der Filterzelle(n) (3) , (3.1) liegenden Erhitzer(14.4) die Filterzelle(n) (3) ersatzweise oder zusätzlich einen integrierten Erhitzer haben können. 8. Air filter unit (20) according to claims 1 to 6 such that instead of or in addition to an outside the filter cell (s) (3), (3.1) lying heater (14.4), the filter cell (s) (3) as a replacement or in addition can have an integrated heater.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU22139/95A AU2213995A (en) | 1994-01-17 | 1995-01-16 | Air filtration unit with a thermal device for disinfecting its filter cell(s) and its interior surfaces |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEG9400480.3U | 1994-01-17 | ||
| DE9400480U DE9400480U1 (en) | 1994-01-17 | 1994-01-17 | Air filter unit (20), suitable for exhaust air / exhaust gases carrying health-threatening germs, preferably with a thermally acting device for in-situ sterilization of its filter cell (s) (3), 3.1) and inner surfaces of the filter unit (20) |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO1995019216A2 true WO1995019216A2 (en) | 1995-07-20 |
| WO1995019216A3 WO1995019216A3 (en) | 1995-09-14 |
Family
ID=6903139
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP1995/000157 WO1995019216A2 (en) | 1994-01-17 | 1995-01-16 | Air filtration unit with a thermal device for disinfecting its filter cells and its interior surfaces |
Country Status (3)
| Country | Link |
|---|---|
| AU (1) | AU2213995A (en) |
| DE (1) | DE9400480U1 (en) |
| WO (1) | WO1995019216A2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0821972A3 (en) * | 1996-07-29 | 1999-08-25 | Ezio Bartocci | Device and method for the sterilisation of compressed air for medical use |
| GB2428601A (en) * | 2005-08-03 | 2007-02-07 | Malcolm Robert Snowball | Fluid filtration apparatus |
| AU2012202757B2 (en) * | 2011-05-10 | 2015-03-26 | Steris Europe, Inc. Suomen Sivuliike | Device for sterilization of a fluid phase |
| DE102020206087A1 (en) | 2020-05-14 | 2021-11-18 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung eingetragener Verein | Self-disinfecting item |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4435739C2 (en) * | 1994-10-06 | 2000-08-17 | Inst Luft Kaeltetech Gem Gmbh | Device for the periodic cleaning of air filters |
| DE102006036476A1 (en) | 2006-08-04 | 2008-02-07 | Khs Ag | filter cartridge |
| EP2075048A1 (en) | 2007-12-18 | 2009-07-01 | Dall'Oglio, Stefano | Method and biological filtering system with regeneration of filtering |
| DE102008023739A1 (en) | 2008-05-15 | 2009-11-26 | Festo Ag & Co. Kg | Method and device for detecting aerosols and / or flowing liquids |
| CN105056647B (en) * | 2015-07-29 | 2017-08-25 | 成都易态科技有限公司 | Filtering high-temperature flue gas device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2229424A2 (en) * | 1973-05-17 | 1974-12-13 | Draegerwerk Ag | |
| DE3522890A1 (en) * | 1984-06-27 | 1986-01-02 | House Food Industrial Co., Ltd., Higashiosaka, Osaka | DEVICE AND METHOD FOR GENERATING STERILE AIR |
| US4707167A (en) * | 1985-09-10 | 1987-11-17 | Aoki Corporation | Air sterilization filter |
| DE3808075A1 (en) * | 1988-03-11 | 1989-09-21 | Rohs Ulrich | Mechanical soot filter device |
| US5277828A (en) * | 1992-04-21 | 1994-01-11 | Fleming Mark A | Steam regenerable filter and method |
-
1994
- 1994-01-17 DE DE9400480U patent/DE9400480U1/en not_active Expired - Lifetime
-
1995
- 1995-01-16 AU AU22139/95A patent/AU2213995A/en not_active Withdrawn
- 1995-01-16 WO PCT/EP1995/000157 patent/WO1995019216A2/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2229424A2 (en) * | 1973-05-17 | 1974-12-13 | Draegerwerk Ag | |
| DE3522890A1 (en) * | 1984-06-27 | 1986-01-02 | House Food Industrial Co., Ltd., Higashiosaka, Osaka | DEVICE AND METHOD FOR GENERATING STERILE AIR |
| US4707167A (en) * | 1985-09-10 | 1987-11-17 | Aoki Corporation | Air sterilization filter |
| DE3808075A1 (en) * | 1988-03-11 | 1989-09-21 | Rohs Ulrich | Mechanical soot filter device |
| US5277828A (en) * | 1992-04-21 | 1994-01-11 | Fleming Mark A | Steam regenerable filter and method |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0821972A3 (en) * | 1996-07-29 | 1999-08-25 | Ezio Bartocci | Device and method for the sterilisation of compressed air for medical use |
| GB2428601A (en) * | 2005-08-03 | 2007-02-07 | Malcolm Robert Snowball | Fluid filtration apparatus |
| AU2012202757B2 (en) * | 2011-05-10 | 2015-03-26 | Steris Europe, Inc. Suomen Sivuliike | Device for sterilization of a fluid phase |
| AU2012202757A8 (en) * | 2011-05-10 | 2015-04-09 | Steris Europe, Inc. Suomen Sivuliike | Device for sterilization of a fluid phase |
| AU2012202757B8 (en) * | 2011-05-10 | 2015-04-09 | Steris Europe, Inc. Suomen Sivuliike | Device for sterilization of a fluid phase |
| US10449264B2 (en) | 2011-05-10 | 2019-10-22 | Steris Europe, Inc. Suomen Sivuliike | Device for sterilization of a fluid phase |
| DE102020206087A1 (en) | 2020-05-14 | 2021-11-18 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung eingetragener Verein | Self-disinfecting item |
| EP3932434A2 (en) | 2020-05-14 | 2022-01-05 | FRAUNHOFER-GESELLSCHAFT zur Förderung der angewandten Forschung e.V. | Self-disinfecting object |
Also Published As
| Publication number | Publication date |
|---|---|
| WO1995019216A3 (en) | 1995-09-14 |
| DE9400480U1 (en) | 1994-05-19 |
| AU2213995A (en) | 1995-08-01 |
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