EP0025157A1 - Method for washing the air in air conditioning installations - Google Patents

Method for washing the air in air conditioning installations Download PDF

Info

Publication number
EP0025157A1
EP0025157A1 EP80105021A EP80105021A EP0025157A1 EP 0025157 A1 EP0025157 A1 EP 0025157A1 EP 80105021 A EP80105021 A EP 80105021A EP 80105021 A EP80105021 A EP 80105021A EP 0025157 A1 EP0025157 A1 EP 0025157A1
Authority
EP
European Patent Office
Prior art keywords
air
ozone
water
fluid
spray
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.)
Granted
Application number
EP80105021A
Other languages
German (de)
French (fr)
Other versions
EP0025157B1 (en
Inventor
Bruno Bachhofer
Anton Locher
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to AT80105021T priority Critical patent/ATE2633T1/en
Publication of EP0025157A1 publication Critical patent/EP0025157A1/en
Application granted granted Critical
Publication of EP0025157B1 publication Critical patent/EP0025157B1/en
Expired legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
    • 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
    • F24F8/117—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 wet filtering
    • F24F8/133—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 wet filtering by direct contact with liquid, e.g. with sprayed liquid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F6/00—Air-humidification, e.g. cooling by humidification
    • F24F6/12—Air-humidification, e.g. cooling by humidification by forming water dispersions in the air
    • F24F6/14—Air-humidification, e.g. cooling by humidification by forming water dispersions in the air using nozzles
    • F24F2006/146—Air-humidification, e.g. cooling by humidification by forming water dispersions in the air using nozzles using pressurised water for spraying
    • 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
    • F24F8/20—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by sterilisation
    • F24F8/24—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by sterilisation using sterilising media
    • F24F8/26—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by sterilisation using sterilising media using ozone

Definitions

  • the invention relates to a method for air washing in air conditioning systems using a spray chamber through which the air is passed and in which a spray is generated by spraying and collecting a supply of scrubber water.
  • Air disinfection with ozone fails due to the control problem of only adding as much ozone as can be reduced by the undesirable organic substances present in the air at the moment. It is important to avoid excess ozone in the air we breathe under all circumstances, as this is toxic.
  • the esundheitshuntn in the relevant provisions of G fixed maximum allowable concentration (MAC value) is 0.1 ppm ozone.
  • the invention is based on the object of proposing an air disinfection method which can be used in air conditioning systems and which has no annoying or harmful side effects and, in particular in rooms with high demands on air hygiene, significantly improves the previous situation.
  • This object is achieved according to the invention in an air washing process of the type described in the introduction in that the scrubber water is treated in a circulating circuit with ozone and contains a halogen which reacts with ozone.
  • Air disinfection takes place in two stages or can be seen under two aspects. On the one hand, germs as well as other undesirable water constituents are washed out of the air, get into the ozone treatment unit with the water and are literally burned there by contact with concentrated ozone and then filtered out. Secondly, the bromine (hypobromite or bromine dioxide) activated by ozone creates a germ-free environment in the washer and, as has been shown, also in the ventilation ducts of the air conditioning system. Bacterial colonies no longer occur there. The permanent disinfection of the second type therefore does not only take place in the spray water.
  • bromine hypobromite or bromine dioxide
  • active oxygen becomes the air flow when humidifying the air given, which has a significant reduction in the number of bacteria in the air-conditioned rooms and has a very favorable effect on the well-being of the patient, for example during long-term operations or in intensive care units.
  • the bromine content of the spray water is not consumed.
  • the oxidation processes and the reduction processes linked to disinfection are reversible and the corresponding bromine states form a balance. This can be measured by measuring the redox potential and can also be controlled by influencing the amount of ozone accordingly.
  • the invention In addition to the safe killing of all germs and viruses in the conditioned air, the invention also has the advantage that the maintenance and cleaning effort for the laundry chambers can be reduced sustainably.
  • a spray chamber 1 is switched into the collecting duct of an air conditioning system and the air flow passes through it in the direction of the arrow.
  • spray nozzles 2 and in the right part baffle plates 3 are indicated schematically.
  • a circulation pump 5 sucks off the scrubbing water at the bottom of the spray chamber and conveys it to the spray nozzles 2.
  • Another circulation circuit runs from the water supply 4 back to the water supply 4 via a circulation pump 6 and an ozone treatment unit 7.
  • the ozone treatment unit 7 consists of a container which is partially filled with fine filter gravel 8 and has a filter star 9 at the outlet.
  • an ozone generator 10 is arranged, which is fed from the outside with dried compressed air and high voltage.
  • the ozone gas exits through a check valve 11 on the underside of the ozone generator.
  • the check valve 11 is surrounded by a mixer chamber 12 which adjoins the ozone generator 10 at the bottom and contains baffles.
  • the water supply line is inserted through the lid of the container and at the bottom the mixer chamber 12 connected. In the mixer chamber, the water entering through the feed line is mixed intensively with the ozone-containing gas emerging from the check valve 11, after which it leaves the mixer chamber again in the radial direction.
  • the spray water contains a nutrient-free complexing agent to avoid limescale deposits.

Abstract

An air washing apparatus consisting essentially of two separate cyclic units. In the first cyclic unit, air is sprayed with a fluid consisting of water and a halogen. The spray removes impurities from the air, and brings the impurities into the fluid supply from which the impurities are removed in the second cyclic unit, by treating the fluid with ozone. After treatment, the fluid is returned to the fluid supply where the halogen in the fluid supply removes any ozone present, and thereby renders the fluid safe.

Description

Die Erfindung betrifft ein Verfahren zur Luftwäsche in Klimaanlagen unter Verwendung einer Sprühkammer, durch welche die Luft hindurchgeleitet wird und in der durch Versprühen und Wiederauffangen eines Vorrats von Wäscherwasser ein Sprühnebel erzeugt wird.The invention relates to a method for air washing in air conditioning systems using a spray chamber through which the air is passed and in which a spray is generated by spraying and collecting a supply of scrubber water.

Eine derartige Luftwäsche bewirkt eine Befeuchtung der Luft und eine Ausschwemmung von Staubpartikeln. In klimatisierten Räumen mit besonders hohem Aufkommen an Keimen, wie z.B. in Krankenhäusern, stellt sich jedoch das zusätzliche Problem der Luftdesinfektion, das bisher nicht befriedigend gelöst werden konnte. Trotz Zugabe von chemischen Desinfektionsmitteln zum Umlaufsprühwasser werden bekanntlich in diesen Sprühkammern außerordentlich hohe Koloniezahlen festgestellt. Außerdem bringen Desinfektionsmittel eigene Probleme, insbesondere Geruchsprobleme in den Aufenthaltsräumen, mit sich. Ferner war bislang einem Bakterienwachstum in den Belüftungskanälen von Klimaanlagen und einer dadurch verursachten Nachbekeimung der Luft nicht beizukommen.Such an air wash causes humidification of the air and a flushing out of dust particles. In air-conditioned rooms with a particularly high number of germs, e.g. in hospitals, however, there is the additional problem of air disinfection, which has so far not been solved satisfactorily. Despite the addition of chemical disinfectants to the circulating spray water, it is known that extremely high numbers of colonies are found in these spray chambers. Disinfectants also have their own problems, especially odor problems in the common rooms. Furthermore, bacterial growth in the ventilation ducts of air conditioning systems and the consequent re-germination of the air could not be prevented.

Die Luftdesinfektion mit Ozon scheitert an dem regelungstechnischen Problem, nur soviel Ozon zuzugeben, wie von den augenblicklich in der Luft enthaltenen unerwünschten organischen Substanzen reduziert werden kann. Es kommt darauf an, überschüssiges Ozon in der Atemluft unter allen Umständen zu vermeiden, da dieses giftig ist. Die in den einschlägigen Vorschriften der Gesundheitsbehörden festgelegte maximale Arbeitsplatzkonzentration (MAK-Wert) beträgt 0,1 ppm Ozon.Air disinfection with ozone fails due to the control problem of only adding as much ozone as can be reduced by the undesirable organic substances present in the air at the moment. It is important to avoid excess ozone in the air we breathe under all circumstances, as this is toxic. The esundheitsbehörden in the relevant provisions of G fixed maximum allowable concentration (MAC value) is 0.1 ppm ozone.

Der Erfindung liegt die Aufgabe zugrunde, ein bei Klimaanlagen einsetzbares Luftdesinfektionsverfahren vorzuschlagen, das keine lästigen oder schädlichen Nebenwirkungen hat und insbesondere bei Räumen mit hohen Ansprüchen an die Lufthygiene die bisherige Situation wesentlich verbessert.The invention is based on the object of proposing an air disinfection method which can be used in air conditioning systems and which has no annoying or harmful side effects and, in particular in rooms with high demands on air hygiene, significantly improves the previous situation.

Diese Aufgabe wird bei einem Luftwaschverfahren der einleitend bezeichneten Art erfindungsgemäß dadurch gelöst, daß das Wäscherwasser in einem Umwälzkreis mit Ozon behandelt wird und ein mit Ozon reagierendes Halogen enthält.This object is achieved according to the invention in an air washing process of the type described in the introduction in that the scrubber water is treated in a circulating circuit with ozone and contains a halogen which reacts with ozone.

Es hat sich gezeigt, daß entgegen den Befürchtungen der Fachkreise und der Genehmigungsbehörden eine Uberdosis von Ozon in der klimatisierten Luft mit Sicherheit vermieden wird. Hierfür ist das zunächst in Form von gelöstem Bromid im Wasser vorhandene Brom verantwortlich. Dieses baut evtl. außerhalb der Ozonbehandlungseinheit im Wasser vorhandenes überschüssiges Ozon unter Bildung von Hypobromit oder Bromdioxid zwingend ab. Messungen an einer Versuchsanlage haben ergeben, daß die höchste auftretende Ozonkonzentration in dem den Sprühdüsen zufließenden Wasser 0,03 ml/m3 betrug und an den Raumbelüftungsdüsen der Klimaanlage höchstens 0,01 ppm.It has been shown that, contrary to the fears of the specialist circles and the licensing authorities, an overdose of ozone in the conditioned air is definitely avoided. The bromine present in the water in the form of dissolved bromide is responsible for this. This may break down excess ozone present in the water outside of the ozone treatment unit with the formation of hypobromite or bromine dioxide. Measurements on a test plant have shown that the highest ozone concentration occurring in the water flowing to the spray nozzles was 0.03 ml / m 3 and at the room ventilation nozzles of the air conditioning system at most 0.01 ppm.

Die Luftdesinfektion vollzieht sich in zwei Stufen bzw. ist unter zwei Aspekten zu sehen. Zum einen werden Keime wie auch andere unerwünschte Wasserinhaltsstoffe aus der Luft ausgewaschen, gelangen mit dem Wasser in die Ozonbehandlungseinheit und werden dort durch den Kontakt mit konzentriertem Ozon regelrecht verbrannt und dann ausgefiltert. Zum anderen bewirkt das durch Ozon "aktivierte Brom" (Hypobromit oder Bromdioxid) ein keimfreies Milieu im Wascher und wie sich gezeigt hat auch in den Belüftungskanälen der Klimaanlage. Bakterienkolonien treten dort nicht mehr auf. Die permanente Desinfektion zweiter Art findet also nicht nur im Sprühwasser statt. Von den genannten Brom-Sauerstoff-Verbindungen wird vielmehr bei der Luftbefeuchtung aktiver Sauerstoff dem Luftstrom mitgegeben, was eine erhebliche Verringerung der Keimzahlen in den klimatisierten Räumen zur Folge hat und das Befinden der Patienten, z.B. bei langdauernden Operationen oder auf Intensivstationen, sehr günstig beeinflußt.Air disinfection takes place in two stages or can be seen under two aspects. On the one hand, germs as well as other undesirable water constituents are washed out of the air, get into the ozone treatment unit with the water and are literally burned there by contact with concentrated ozone and then filtered out. Secondly, the bromine (hypobromite or bromine dioxide) activated by ozone creates a germ-free environment in the washer and, as has been shown, also in the ventilation ducts of the air conditioning system. Bacterial colonies no longer occur there. The permanent disinfection of the second type therefore does not only take place in the spray water. Of the bromine-oxygen compounds mentioned, active oxygen becomes the air flow when humidifying the air given, which has a significant reduction in the number of bacteria in the air-conditioned rooms and has a very favorable effect on the well-being of the patient, for example during long-term operations or in intensive care units.

Der Bromgehalt des Sprühwassers wird nicht verbraucht. Die Oxydations- und die mit der Desinfektion gekoppelten Reduktionsvorgänge sind umkehrbar und die entsprechenden Zustandsformen des Broms bilden ein Gleichgewicht. Dieses ist durch Messung des Redoxpotentials meßbar und durch entsprechende Beeinflussung der Ozonmenge auch steuerbar.The bromine content of the spray water is not consumed. The oxidation processes and the reduction processes linked to disinfection are reversible and the corresponding bromine states form a balance. This can be measured by measuring the redox potential and can also be controlled by influencing the amount of ozone accordingly.

Abgesehen von der sicheren Abtötung aller Keime und Viren in der klimatisierten Luft hat die Erfindung auch den Vorteil, daß der Wartungs- und Reinigungsaufwand für die Wäscherkammern nachhaltig verringert werden kann.In addition to the safe killing of all germs and viruses in the conditioned air, the invention also has the advantage that the maintenance and cleaning effort for the laundry chambers can be reduced sustainably.

Ein Ausführungsbeispiel der Erfindung wird anhand der Zeichnung erläutert.An embodiment of the invention is explained with reference to the drawing.

Eine Sprühkammer 1 ist in den Sammelkanal einer Klimaanlage eingeschaltet und wird in Pfeilrichtung vom Luftstrom durchsetzt. Im linken Teil sind Sprühdüsen 2 und im rechten Teil Prallbleche 3 schematisch angedeutet. Im unteren Teil der Sprühkammer 1 befindet sich ein Wasservorrat 4, von dem eine Umwälzpumpe 5 am Boden der Sprühkammer das Wäscherwasser absaugt und zu den Sprühdüsen 2 fördert. Ein weiterer Umwälzkreis verläuft vom Wasservorrat 4 über eine Umwälzpumpe 6 und eine Ozonbehandlungseinheit 7 zum Wasservorrat 4 zurück.A spray chamber 1 is switched into the collecting duct of an air conditioning system and the air flow passes through it in the direction of the arrow. In the left part, spray nozzles 2 and in the right part baffle plates 3 are indicated schematically. In the lower part of the spray chamber 1 there is a water supply 4, from which a circulation pump 5 sucks off the scrubbing water at the bottom of the spray chamber and conveys it to the spray nozzles 2. Another circulation circuit runs from the water supply 4 back to the water supply 4 via a circulation pump 6 and an ozone treatment unit 7.

Die Ozonbehandlungseinheit 7 besteht aus einem Behälter, der teilweise mit feinem Filterkies 8 gefüllt ist und am Auslauf einen Filterstern 9 aufweist. An der Innenseite des Behälterdeckels ist ein Ozonerzeuger 10 angeordnet, der von außen her mit getrockneter Druckluft und Hochspannung gespeist wird. Das Ozongas tritt über ein Rückschlagventil 11 an der Unterseite des Ozonerzeugers aus. Das Rückschlagventil 11 ist von einer Mischerkammer 12 umgeben, die sich unten an den Ozonerzeuger 10 anschließt und Schikanen enthält. Die Wasserzuleitung ist durch den Deckel des Behälters in diesen eingeführt und am Boden der Mischerkammer 12 angeschlossen. In der Mischerkammer wird das durch die Zuleitung eintretende Wasser mit dem aus dem Rückschlagventil 11 austretenden ozonhaltigen Gas intensiv vermischt, wonach es die Mischerkammer in radialer Richtung wieder verläßt. Jetzt beruhigt sich das Wasser und wandert nur langsam durch den Filterkies 8 nach unten. Dabei sammelt sich Luft und überschüssiges Ozon oben im Behälter und verläßt diesen über ein schwimmergesteuertes Entgasungsventil 13, an das sich ein nicht dargestelltes Aktivkohlefilter zur Vernichtung des Restozons anschließt.The ozone treatment unit 7 consists of a container which is partially filled with fine filter gravel 8 and has a filter star 9 at the outlet. On the inside of the container lid, an ozone generator 10 is arranged, which is fed from the outside with dried compressed air and high voltage. The ozone gas exits through a check valve 11 on the underside of the ozone generator. The check valve 11 is surrounded by a mixer chamber 12 which adjoins the ozone generator 10 at the bottom and contains baffles. The water supply line is inserted through the lid of the container and at the bottom the mixer chamber 12 connected. In the mixer chamber, the water entering through the feed line is mixed intensively with the ozone-containing gas emerging from the check valve 11, after which it leaves the mixer chamber again in the radial direction. Now the water calms down and only slowly moves down through the filter gravel 8. Air and excess ozone collects at the top in the container and leaves it via a float-controlled degassing valve 13, which is followed by an activated carbon filter (not shown) for the destruction of the residual ozone.

Das Sprühwasser enthält außer Bromid bzw. Brom einen nährstofffreien Komplexbildner zur Vermeidung von Kalkablagerungen.In addition to bromide or bromine, the spray water contains a nutrient-free complexing agent to avoid limescale deposits.

Von Zeit zu Zeit wird der Filter mit Hilfe nicht darge-stellter Einrichtungen unter Verwendung des Wäscherwassers rückgespült. Dieses in den Kanal abgeleitete Rückspülwasser wird anschließend wieder durch Frischwasser ersetzt, wobei durch Zugabe einer entsprechenden Menge Bromwasserstoffsäure und Komplexbildner die ausgespülten Substanzen wieder ergänzt werden.From time to time the filter means will not constitute g e-imputed facilities using the scrubber water backwashed. This backwashing water discharged into the sewer is then replaced by fresh water, the flushed out substances being replenished by adding an appropriate amount of hydrobromic acid and complexing agents.

Claims (1)

Verfahren zur Luftwäsche in Klimaanlagen unter Verwendung einer Sprühkammer, durch welche die Luft hindurchgeleitet wird und in der durch Versprühen und Wiederauffangen eines Vorrats von Wäscherwasser ein Sprühnebel erzeugt wird, dadurch gekennzeichnet, daß das Wäscherwasser (4) in einem Umwälzkreis mit Ozon behandelt wird und ein mit Ozon reagierendes Halogen enthält.Method for air washing in air conditioning systems using a spray chamber through which the air is passed and in which a spray mist is produced by spraying and collecting a supply of scrubbing water, characterized in that the scrubbing water (4) is treated with ozone in a circulation circuit and a contains halogen reacting with ozone.
EP80105021A 1979-08-29 1980-08-23 Method for washing the air in air conditioning installations Expired EP0025157B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80105021T ATE2633T1 (en) 1979-08-29 1980-08-23 METHOD OF AIR WASHING IN AIR CONDITIONING SYSTEMS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19792934846 DE2934846A1 (en) 1979-08-29 1979-08-29 AIRWASHING METHOD IN AIR CONDITIONING
DE2934846 1979-08-29

Publications (2)

Publication Number Publication Date
EP0025157A1 true EP0025157A1 (en) 1981-03-18
EP0025157B1 EP0025157B1 (en) 1983-02-23

Family

ID=6079535

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80105021A Expired EP0025157B1 (en) 1979-08-29 1980-08-23 Method for washing the air in air conditioning installations

Country Status (5)

Country Link
US (1) US4410339A (en)
EP (1) EP0025157B1 (en)
JP (1) JPS5659141A (en)
AT (1) ATE2633T1 (en)
DE (1) DE2934846A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017143599A1 (en) * 2016-02-27 2017-08-31 孙华 Air purification method and system

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60500851A (en) * 1983-02-18 1985-06-06 クザルノ，ヤヌ−シユ air purifier
JPS6058228A (en) * 1983-09-09 1985-04-04 Senichi Masuda Air purifying apparatus
US4601886A (en) * 1984-05-24 1986-07-22 Hudgins Richard G Air treatment apparatus
JPS6261615A (en) * 1985-09-10 1987-03-18 Fuji Electric Co Ltd Apparatus for removing dust and bacteria in gas
US5017351A (en) * 1988-02-11 1991-05-21 Rafson Harold J Process for removing volatile organic compounds from air streams
JPH02135110A (en) * 1988-11-16 1990-05-24 Daiei Sangyo Kk Purifying treatment of polluted air and its apparatus
DE4408303A1 (en) * 1993-09-14 1995-03-16 Hatz Walter Method and device for degerminating air washers in air-conditioning plants
US5878912A (en) 1995-12-26 1999-03-09 Stein; Myron Duct disinfecting method and apparatus
SE9903177L (en) * 1999-09-08 2001-05-08 Otre Ab Apparatus and method for treating air
US6503547B1 (en) * 1999-11-18 2003-01-07 Grupo Interozone Method for diffusing ozone in a closed environment
GB9927617D0 (en) * 1999-11-24 2000-01-19 Ump Co Ltd Biocide air delivery systems
US6743279B2 (en) * 2002-05-17 2004-06-01 Airborne Contaminant Systems, Llc Air purification device for air handling units
US7105039B2 (en) * 2003-02-26 2006-09-12 Scott Decker Ozone remediation apparatus and methods
DE202018005053U1 (en) * 2018-11-01 2020-02-05 Peter Mittelsdorf Air purification device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1176463A (en) * 1957-06-03 1959-04-10 Device for enriching the air in common rooms, performance halls and all public places
US3065043A (en) * 1958-05-23 1962-11-20 Midland Ross Corp Air purification
DE1256862B (en) * 1958-12-20 1967-12-21 Otto Heinz Brandi Dipl Ing Air washer for air conditioners
DE2060895A1 (en) * 1970-12-10 1972-06-15 Sheikh Morris I Sterilizing air wire iodine

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2090466A (en) * 1935-03-30 1937-08-17 Francis R Bichowsky Means for humidifying and drying air
DE715595C (en) * 1936-12-08 1942-01-03 Henri Bernard Beer Method and device for cleaning and sterilizing air using ozone
US2207774A (en) * 1938-12-07 1940-07-16 Tubize Chatillon Corp Gas conditioning
US2405553A (en) * 1941-06-07 1946-08-13 Donald K Allison Means and method of ozonizing liquids
US2606150A (en) * 1948-04-08 1952-08-05 Air Reduction Dispersion of gaseous treating agents in liquids
US2771416A (en) * 1950-03-06 1956-11-20 Edmund J Ryan Water purification
US2874032A (en) * 1955-10-04 1959-02-17 Borg Warner Dissolver
US3366441A (en) * 1964-02-10 1968-01-30 Ultra Dynamics Corp Ultraviolet system for control of algae and slime within humidity control and similar systems
US3805481A (en) * 1964-04-23 1974-04-23 E Armstrong Apparatus for and process of treating liquids with a gas
US3326747A (en) * 1965-05-17 1967-06-20 Sol B Wiczer Disinfecting solution and method
US3445001A (en) * 1967-06-02 1969-05-20 Ozonator Corp Water purifier
DE2301127A1 (en) * 1970-06-19 1974-07-18 Plafog Planungs Und Forschungs Two stage sterilisation of water - using iodine or bromine as additives in the second stage prior to carbon filtration
DE2156571C3 (en) * 1971-11-15 1981-07-30 Hans-Ulrich Ing.(Grad.) 6200 Wiesbaden Klein Use of a filter bed in a device for complex water treatment with ozone
DE2332058A1 (en) * 1973-06-23 1975-01-16 Demag Ag Sterilising drinking water before bottling - by injecting free ozone in specified amts.
DE2450731A1 (en) * 1974-10-25 1976-04-29 Hydro Elektrik Gmbh Germicidal treatment of circulated swimming pool water - with ozone and hydrobromic acid
DE2632298A1 (en) * 1976-07-17 1978-01-19 Heinz Hoelter Flue gas washing with halogen cpds. soln. - gives minimal scale formation, liq. being regenerated by alkaline earth carbonate
JPS5393170A (en) * 1977-01-28 1978-08-15 Asahi Glass Co Ltd Deodorizing method for exhaust gas or waste liquid
JPS6048219B2 (en) * 1978-01-24 1985-10-25 三菱電機株式会社 Method for purifying gases containing lower aldehydes
JPS5561920A (en) * 1978-11-01 1980-05-10 Mitsubishi Electric Corp Deodorizing method

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1176463A (en) * 1957-06-03 1959-04-10 Device for enriching the air in common rooms, performance halls and all public places
US3065043A (en) * 1958-05-23 1962-11-20 Midland Ross Corp Air purification
DE1256862B (en) * 1958-12-20 1967-12-21 Otto Heinz Brandi Dipl Ing Air washer for air conditioners
DE2060895A1 (en) * 1970-12-10 1972-06-15 Sheikh Morris I Sterilizing air wire iodine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017143599A1 (en) * 2016-02-27 2017-08-31 孙华 Air purification method and system

Also Published As

Publication number Publication date
US4410339A (en) 1983-10-18
JPS5659141A (en) 1981-05-22
ATE2633T1 (en) 1983-03-15
DE2934846A1 (en) 1981-03-19
DE2934846C2 (en) 1990-10-31
EP0025157B1 (en) 1983-02-23

Similar Documents

Publication Publication Date Title
EP0025157B1 (en) Method for washing the air in air conditioning installations
DE3033043C2 (en) Device for sterilizing containers
DE4115124A1 (en) DEODORIZATION AND / OR STERILIZATION DEVICE
DE102007012768B4 (en) Method and device for cleaning lung regulators
DE3232057A1 (en) Machine for cleaning washing, crockery or the like
DE3603900A1 (en) DRINKING WATER PURIFICATION DEVICE
EP1468151B1 (en) Method for sterilisation and cleaning of water supply systems, in particular in swimming and bathing pool units and device for carrying out the same
DE2163254A1 (en) Device for cleaning the air in rooms through ionization
DE19814705A1 (en) Process and assembly treats continual flow of swimming pool water with agent
EP1925478B1 (en) Ventilation system, heating and/or air conditioning unit
DE60029060T2 (en) Air conditioning system with an automatic cleaning and disinfecting system and corresponding method
DE3921177C2 (en) dishwasher
DE715595C (en) Method and device for cleaning and sterilizing air using ozone
DE2656465A1 (en) METHOD FOR DISINCLUDING LIQUIDS
CH647285A5 (en) CYCLING WASHING MACHINE FOR DISINFECTING TREATMENT OF LAUNDRY.
DE4327526C2 (en) Air purification system and method for air purification using the system
DE2220189C2 (en) Water softener installation in washing machine - has conical cover with UV lamp switched ON and OFF with water flow control valve
EP1153890B1 (en) Method and plant for treating bathing water
DE102006042650B4 (en) Humidification system with a degermination device
DE102018106106A1 (en) processing plant
DE3000828A1 (en) Glass pane washing and sterilising - by circulating ozone enriched bromide soln.
AT61707B (en) Device for water purification with ozonated air.
DE2812794A1 (en) Swimming pool water treatment - controls halogen and ozone addition by redox potential measurement
DE102011012137B4 (en) Process and device for the treatment of bathing water
DE202020101864U1 (en) Ventilation system for the treatment of room air

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT CH FR GB IT NL

17P Request for examination filed

Effective date: 19810903

ITF It: translation for a ep patent filed

Owner name: DE DOMINICIS & MAYER S.R.L.

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Designated state(s): AT CH FR GB IT LI NL

REF Corresponds to:

Ref document number: 2633

Country of ref document: AT

Date of ref document: 19830315

Kind code of ref document: T

ET Fr: translation filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 19860814

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19870831

Year of fee payment: 8

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Effective date: 19890823

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19900301

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19901025

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19910724

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19910821

Year of fee payment: 12

ITTA It: last paid annual fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19910831

Ref country code: CH

Effective date: 19910831

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19920823

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19920823

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19930430

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT