DE19841311A1 - Electrostatic filter-ionizer, for air conditioning, having a tungsten wire tip with a conductive surface layer of low work function to increase ion generation - Google Patents

Electrostatic filter-ionizer, for air conditioning, having a tungsten wire tip with a conductive surface layer of low work function to increase ion generation

Info

Publication number
DE19841311A1
DE19841311A1 DE19841311A DE19841311A DE19841311A1 DE 19841311 A1 DE19841311 A1 DE 19841311A1 DE 19841311 A DE19841311 A DE 19841311A DE 19841311 A DE19841311 A DE 19841311A DE 19841311 A1 DE19841311 A1 DE 19841311A1
Authority
DE
Germany
Prior art keywords
ionizer
work function
surface layer
low work
conductive surface
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.)
Withdrawn
Application number
DE19841311A
Other languages
German (de)
Inventor
Heinz Hoelter
Joseph Eichmeier
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 DE19841311A priority Critical patent/DE19841311A1/en
Priority to DE19859827A priority patent/DE19859827A1/en
Publication of DE19841311A1 publication Critical patent/DE19841311A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L9/00—Disinfection, sterilisation or deodorisation of air
    • A61L9/16—Disinfection, sterilisation or deodorisation of air using physical phenomena
    • A61L9/22—Ionisation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/34—Constructional details or accessories or operation thereof
    • B03C3/40—Electrode constructions
    • B03C3/41—Ionising-electrodes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/34—Constructional details or accessories or operation thereof
    • B03C3/40—Electrode constructions
    • B03C3/45—Collecting-electrodes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/34—Constructional details or accessories or operation thereof
    • B03C3/40—Electrode constructions
    • B03C3/60—Use of special materials other than liquids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/34—Constructional details or accessories or operation thereof
    • B03C3/40—Electrode constructions
    • B03C3/60—Use of special materials other than liquids
    • B03C3/62—Use of special materials other than liquids ceramics
    • 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
    • F24F8/192—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 by electrical means, e.g. by applying electrostatic fields or high voltages
    • 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
    • F24F8/30—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by ionisation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Epidemiology (AREA)
  • Ceramic Engineering (AREA)
  • Elimination Of Static Electricity (AREA)
  • Electrostatic Separation (AREA)

Abstract

An electrostatic filter-ionizer, having a fine tungsten wire tip with a thin conductive surface layer of low work function, is new.

Description

Für die Ionen-Raumklimatisierung sind Ionengeneratoren erforderlich, die im Dauerbetrieb mit hoher Ergiebigkeit atmosphärische Kleinionen erzeugen. Solche Ionenquellen werden in Form speziell geätzter Feindrahtspitzen in Verbindung mit denaturierenden Niederschlagselektroden in Elektrofiltergeräten und -systemen für die Raumluftreinigung und -aufbereitung eingesetzt. Bei Anlegen einer positiven oder negativen Gleichspannung von einigen Kilovolt emittieren solche Feindrahtspitzen positive bzw. negative Kleinionen in die Raumluft. Von der Ionenergiebigkeit der Spitzenionisatoren hangt die luftschadstoff- und keimabscheidende Wirkung der denaturierenden Elektrofiltersysteme in entscheidender Weise ab.Ion generators that are in continuous operation are required for ion room air conditioning Generate atmospheric small ions with high productivity. Such ion sources are used in Form of specially etched fine wire tips in connection with denaturing Precipitation electrodes in electrostatic filter devices and systems for indoor air cleaning and processing used. When applying a positive or negative DC voltage of A few kilovolts such fine wire tips emit positive or negative small ions into the Indoor air. The air pollutant and depends on the ion yield of the top ionizers germ-separating effect of denaturing electrostatic precipitator systems in a decisive way from.

Um diese Wirkung zu verbessern, wird erfindungsgemäß vorgeschlagen, die Ionenergiebigkeit der Spitzenionisatoren dadurch zu verbessern, daß die Spitzen mit einem Überzug aus Ba3Y2WO9 beschichtet werden. Ein solcher Überzug hat eine deutlich niedrigere Emissionsenergie (Austrittsarbeit) für die erzeugten Ladungsträger im Vergleich zu reinen Wolframspitzen. Folglich sollten die so beschichteten Drahtspitzen eine deutlich höhere Ionenergiebigkeit aufweisen. In order to improve this effect, the invention proposes to improve the ion yield of the tip ionizers by coating the tips with a coating of Ba 3 Y 2 WO 9 . Such a coating has a significantly lower emission energy (work function) for the charge carriers generated compared to pure tungsten tips. Consequently, the wire tips coated in this way should have a significantly higher ionic yield.

In der beiliegenden Zeichnung ist die erfindungsgemäße Anordnung einer Wolframdrahtspitze mit dünner leitender Oberflächenschicht dargestellt:
mit (1) Wolframdrahtspitze
mit (2) leitende Ba3Y2WO9-Schicht mit niedriger Austrittsarbeit
mit (3) Verbindung zur Spannungsquelle.The attached drawing shows the arrangement according to the invention of a tungsten wire tip with a thin conductive surface layer:
with ( 1 ) tungsten wire tip
with ( 2 ) conductive Ba 3 Y 2 WO 9 layer with low work function
with ( 3 ) connection to the voltage source.

Selbstverständlich ist die Erfindung nicht auf die vorstehend im einzelnen beschriebene Ausführungsform beschränkt, sondern es sich zahlreiche Abänderungen möglich, ohne jedoch von dem Grundgedanken abzuweichen, daß Wolfram-Feindrahtspitzen zur Erhöhung des Ionenstroms mit einer dünnen leitenden Schicht mit niedriger Austriftsarbeit bedeckt werden oder daß die spitzen selbst aus einem leitenden Material mit niedriger Austrittsarbeit hergestellt werden.Of course, the invention is not limited to that described in detail above Embodiment limited, but there are numerous changes possible without, however to deviate from the basic idea that tungsten fine wire tips to increase the Ion current can be covered with a thin conductive layer with low work function or that the tips themselves are made of a conductive material with a low work function getting produced.

Claims (2)

1. Elektrofilter-Ionisator mit Wolfram-Feindrahtspitzen, dadurch gekennzeichnet, daß die Feindrahtspitzen zur Erhöhung der Ionenproduktion eine dünne leitende Oberflächenschicht mit niedriger Austrittsarbeit haben.1. Electro filter ionizer with tungsten fine wire tips, characterized in that the fine wire tips have a thin conductive surface layer with a low work function to increase ion production. 2. Elektrofilter-Ionisator, dadurch gekennzeichnet, daß die Oberflächenschicht aus Ba3Y2WO9 besteht.2. Electro filter ionizer, characterized in that the surface layer consists of Ba 3 Y 2 WO 9 .
DE19841311A 1998-09-10 1998-09-10 Electrostatic filter-ionizer, for air conditioning, having a tungsten wire tip with a conductive surface layer of low work function to increase ion generation Withdrawn DE19841311A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE19841311A DE19841311A1 (en) 1998-09-10 1998-09-10 Electrostatic filter-ionizer, for air conditioning, having a tungsten wire tip with a conductive surface layer of low work function to increase ion generation
DE19859827A DE19859827A1 (en) 1998-09-10 1998-12-23 Pollutant removal in electrofilter systems, comprises directing ions that cover the pollutants to pptn electrodes in the form of pins.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19841311A DE19841311A1 (en) 1998-09-10 1998-09-10 Electrostatic filter-ionizer, for air conditioning, having a tungsten wire tip with a conductive surface layer of low work function to increase ion generation

Publications (1)

Publication Number Publication Date
DE19841311A1 true DE19841311A1 (en) 2000-03-16

Family

ID=7880443

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19841311A Withdrawn DE19841311A1 (en) 1998-09-10 1998-09-10 Electrostatic filter-ionizer, for air conditioning, having a tungsten wire tip with a conductive surface layer of low work function to increase ion generation

Country Status (1)

Country Link
DE (1) DE19841311A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005053852A1 (en) * 2003-12-01 2005-06-16 Eidgenössische Materialprüfungs- und Forschungsanstalt Empa Device for carrying out the electrostatic separation of particles in gas streams

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005053852A1 (en) * 2003-12-01 2005-06-16 Eidgenössische Materialprüfungs- und Forschungsanstalt Empa Device for carrying out the electrostatic separation of particles in gas streams

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