WO1995019216A2 - Unite de filtration d'air pourvue d'un systeme a action thermique pour desinfecter ses cellules filtrantes et ses surfaces interieures - Google Patents

Unite de filtration d'air pourvue d'un systeme a action thermique pour desinfecter ses cellules filtrantes et ses surfaces interieures Download PDF

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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
Authority
WO
WIPO (PCT)
Prior art keywords
air
filter
filter unit
unit
cell
Prior art date
Application number
PCT/EP1995/000157
Other languages
German (de)
English (en)
Other versions
WO1995019216A3 (fr
Inventor
Herbert OBERMÜLLER
Ulrich Kethers
Original Assignee
T.E.T.-Umwelttechnik Gesellschaft Für Lufttechnische Verfahren Mbh (Thermal And Environmental Techniques)
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 T.E.T.-Umwelttechnik Gesellschaft Für Lufttechnische Verfahren Mbh (Thermal And Environmental Techniques) filed Critical T.E.T.-Umwelttechnik Gesellschaft Für Lufttechnische Verfahren Mbh (Thermal And Environmental Techniques)
Priority to AU22139/95A priority Critical patent/AU2213995A/en
Publication of WO1995019216A2 publication Critical patent/WO1995019216A2/fr
Publication of WO1995019216A3 publication Critical patent/WO1995019216A3/fr

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
    • B01D46/0027—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
    • 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
    • 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
    • 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
    • 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.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
  • Filtering Materials (AREA)
  • Central Air Conditioning (AREA)
  • Apparatus For Disinfection Or Sterilisation (AREA)

Abstract

L'invention concerne une unité de filtration d'air qui comporte un système à action thermique servant à désinfecter ses cellules filtrantes et ses surfaces intérieures. Cette unité de filtration d'air est constituée d'un dispositif de chauffage ou d'irradiation monté à l'extérieur des cellules filtrantes.
PCT/EP1995/000157 1994-01-17 1995-01-16 Unite de filtration d'air pourvue d'un systeme a action thermique pour desinfecter ses cellules filtrantes et ses surfaces interieures WO1995019216A2 (fr)

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
DE9400480U DE9400480U1 (de) 1994-01-17 1994-01-17 Luftfiltereinheit (20), geeignet für gesundheitsgefährdende Keime tragende Abluft/Abgase mit einer vorzugsweise thermisch wirkenden Einrichtung zur Insitu-Entkeimung ihrer Filterzelle(n) (3), 3.1) und innerer Oberflächen der Filtereinheit (20)
DEG9400480.3U 1994-01-17

Publications (2)

Publication Number Publication Date
WO1995019216A2 true WO1995019216A2 (fr) 1995-07-20
WO1995019216A3 WO1995019216A3 (fr) 1995-09-14

Family

ID=6903139

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1995/000157 WO1995019216A2 (fr) 1994-01-17 1995-01-16 Unite de filtration d'air pourvue d'un systeme a action thermique pour desinfecter ses cellules filtrantes et ses surfaces interieures

Country Status (3)

Country Link
AU (1) AU2213995A (fr)
DE (1) DE9400480U1 (fr)
WO (1) WO1995019216A2 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0821972A3 (fr) * 1996-07-29 1999-08-25 Ezio Bartocci Appareil et procédé pour la stérilisation d'air comprimé à usage médical
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 (de) 2020-05-14 2021-11-18 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung eingetragener Verein Selbst-desinfizierender Gegenstand

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4435739C2 (de) * 1994-10-06 2000-08-17 Inst Luft Kaeltetech Gem Gmbh Einrichtung zur periodischen Abreinigung von Luftfiltern
DE102006036476A1 (de) * 2006-08-04 2008-02-07 Khs Ag Filtereinsatz
EP2075048A1 (fr) 2007-12-18 2009-07-01 Dall'Oglio, Stefano Procédé et système de filtrage biologique avec régénération du filtrage
DE102008023739A1 (de) 2008-05-15 2009-11-26 Festo Ag & Co. Kg Verfahren und Vorrichtung zur Erfassung von Aerosolen und/oder strömenden Flüssigkeiten
CN105056647B (zh) * 2015-07-29 2017-08-25 成都易态科技有限公司 高温烟气过滤装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2229424A2 (fr) * 1973-05-17 1974-12-13 Draegerwerk Ag
DE3522890A1 (de) * 1984-06-27 1986-01-02 House Food Industrial Co., Ltd., Higashiosaka, Osaka Vorrichtung und verfahren zum erzeugen steriler luft
US4707167A (en) * 1985-09-10 1987-11-17 Aoki Corporation Air sterilization filter
DE3808075A1 (de) * 1988-03-11 1989-09-21 Rohs Ulrich Mechanische russfiltervorrichtung
US5277828A (en) * 1992-04-21 1994-01-11 Fleming Mark A Steam regenerable filter and method

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2229424A2 (fr) * 1973-05-17 1974-12-13 Draegerwerk Ag
DE3522890A1 (de) * 1984-06-27 1986-01-02 House Food Industrial Co., Ltd., Higashiosaka, Osaka Vorrichtung und verfahren zum erzeugen steriler luft
US4707167A (en) * 1985-09-10 1987-11-17 Aoki Corporation Air sterilization filter
DE3808075A1 (de) * 1988-03-11 1989-09-21 Rohs Ulrich Mechanische russfiltervorrichtung
US5277828A (en) * 1992-04-21 1994-01-11 Fleming Mark A Steam regenerable filter and method

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0821972A3 (fr) * 1996-07-29 1999-08-25 Ezio Bartocci Appareil et procédé pour la stérilisation d'air comprimé à usage médical
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
AU2012202757B8 (en) * 2011-05-10 2015-04-09 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
US10449264B2 (en) 2011-05-10 2019-10-22 Steris Europe, Inc. Suomen Sivuliike Device for sterilization of a fluid phase
DE102020206087A1 (de) 2020-05-14 2021-11-18 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung eingetragener Verein Selbst-desinfizierender Gegenstand
EP3932434A2 (fr) 2020-05-14 2022-01-05 FRAUNHOFER-GESELLSCHAFT zur Förderung der angewandten Forschung e.V. Objet auto-désinfectant

Also Published As

Publication number Publication date
WO1995019216A3 (fr) 1995-09-14
AU2213995A (en) 1995-08-01
DE9400480U1 (de) 1994-05-19

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