EP1297894B1 - Ioniser for filter apparatus - Google Patents

Ioniser for filter apparatus Download PDF

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Publication number
EP1297894B1
EP1297894B1 EP02018566A EP02018566A EP1297894B1 EP 1297894 B1 EP1297894 B1 EP 1297894B1 EP 02018566 A EP02018566 A EP 02018566A EP 02018566 A EP02018566 A EP 02018566A EP 1297894 B1 EP1297894 B1 EP 1297894B1
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EP
European Patent Office
Prior art keywords
sheet metal
discharge electrode
gas
loniser
metal walls
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.)
Revoked
Application number
EP02018566A
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German (de)
French (fr)
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EP1297894A3 (en
EP1297894A2 (en
Inventor
Olaf Bernstorff
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.)
FlaektGroup Deutschland GmbH
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GEA Delbag Lufttechnik GmbH
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Publication date
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Application filed by GEA Delbag Lufttechnik GmbH filed Critical GEA Delbag Lufttechnik GmbH
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Publication of EP1297894A3 publication Critical patent/EP1297894A3/en
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    • 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
    • B03C3/36—Controlling flow of gases or vapour
    • 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
    • B03C3/38—Particle charging or ionising stations, e.g. using electric discharge, radioactive radiation or flames

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  • Electrostatic Separation (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Networks Using Active Elements (AREA)
  • Filtration Of Liquid (AREA)
  • Filtering Materials (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)

Abstract

The ionizer provides electrical charging of solid or liquid particles contained in the air via a number of spray electrode wires (4), extending parallel to one another perpendicular to the air flow direction, with sheet metal walls (1) between them defining air flow channels, each having a spray electrode at its center. The opposing sheet metal walls are bent outwards to form a widened channel section on one side of each spray electrode wire.

Description

Die Erfindung betrifft einen lonisator für ein Filtergerät, bei dem im lonisator die im Gas insbesondere in der Luft enthaltenen festen oder flüssigen Teilchen elektrisch aufgeladen werden, um danach zwischen den Platten eines Kollektors abgeschieden zu werden, wobei im lonisator mehrere Sprühelektroden-Drähte zueinander parallel und quer zum Strom des Gases/der Luft gespannt und zwischen den Sprühelektroden-Drähten Blechwände angeordnet sind, die Gas/Luftkanäle bilden, zwischen denen mittig die Sprühelektroden-Drähte angeordnet sind. Dokument US 4 124 359 A offenbart eine solche Vorrichtung.The invention relates to an ionizer for a filter device, wherein in the ionizer, the solid or liquid particles contained in the gas in particular in the air are electrically charged to be subsequently deposited between the plates of a collector, wherein in the ionizer several Sprühelektroden wires parallel to each other and Tensioned transversely to the flow of gas / air and between the Sprühelektroden wires are arranged sheet metal walls which form gas / air channels, between which the Sprühelektroden wires are arranged centrally. document US 4,124,359 A discloses such a device.

Bei einem solchen lonisator eines Filtergerätes ist es bekannt, dass mehrere Blechwände in gleichen Abständen parallel nebeneinander in Richtung des Gasstromes angeordnet sind und jeweils zwischen zwei Blechwänden mittig eine meist drahtförmige Sprühelektrode befestigt ist, die parallel zu den geerdeten Blechwänden und rechtwinklig zur Strömungsrichtung des Gasstromes gespannt ist. Bei dieser bekannten Konstruktion strömt das Gas mit gleichbleibender Geschwindigkeit durch den Kanal zwischen den Blechwänden und kommt nur kurzzeitig und mit zunehmender Stärke und danach wieder abnehmender Stärke in den Behandlungsbereich der Sprühelektrode.In such an ionizer of a filter device, it is known that a plurality of metal walls are arranged at equal intervals parallel to each other in the direction of gas flow and in each case between two sheet metal walls in the middle a usually wire-shaped spray electrode is fixed, which is stretched parallel to the grounded sheet metal walls and at right angles to the flow direction of the gas stream is. In this known construction, the gas flows at a constant speed through the channel between the metal walls and comes only for a short time and with increasing strength and then again decreasing strength in the treatment area of the spray.

Aufgabe der Erfindung ist es, einen lonisator der eingangs genannten Art so zu verbessern, dass das Gas durch die Sprühelektrode gleichmäßiger und zeitlich länger behandelt wird.The object of the invention is to improve an ionizer of the type mentioned so that the gas is treated by the spray more uniform and longer in time.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, dass zumindest eine Blechwand (1), insbesondere die zwei Blechwände zu beiden Seiten eines Sprühelektroden-Drahtes jeweils eine Erweiterung aufweisen, die eine Gesamterweiterung des Kanals bilden.This object is achieved in that at least one sheet metal wall (1), in particular the two metal walls on both sides of a Sprühelektroden wire each have an extension that form a total extension of the channel.

Die Blechwände bilden damit im Bereich der Sprühelektrode eine Gesamterweiterung des Kanals ohne dass die Blechwände im Eingangs- und Ausgangsbereich einen größeren Abstand besitzen müssen, so dass die Anzahl der Blechwände gleichbleiben kann. Die jeweilige Gesamterweiterung eines Kanals im Bereich einer Sprühelektrode führt innerhalb dieses Bereiches zu einer Verlangsamung des Gasstromes, so dass das Gas im Bereich der Elektrode länger verweilt und damit dort stärker ionisiert wird, ohne die Geschwindigkeit des Gasstromes vor und hinter dem lonisator verlangsamen zu müssen. Darüber hinaus wird im Bereich der Kanalerweiterung eine gleichmäßige gekrümmte Strömung zu beiden Seiten um die drahtförmige Sprühelektrode erreicht, so dass es zusätzlich zu einer Vergleichsmäßigung der Behandlung kommt. Alternativ kann aber auch die Geschwindigkeit des Gasstromes vor und hinter der Erweiterung vergrößert werden, so daß der Durchsatz durch den lonisator erhöht wird.The sheet metal walls thus form in the region of the spray electrode a total extension of the channel without the sheet metal walls in the input and output area must have a greater distance, so that the number of sheet metal walls can remain the same. The respective total expansion of a channel in the region of a spray electrode leads within this range to a slowing down of the gas flow, so that the gas stays longer in the region of the electrode and thus becomes more ionized there, without having to slow down the speed of the gas flow in front of and behind the ionizer. Moreover, in the region of the channel widening, a uniform curved flow is achieved on both sides around the wire-shaped spray electrode, so that in addition to a comparison of the treatment comes. Alternatively, however, the speed of the gas flow before and after the extension can be increased, so that the throughput is increased by the ionizer.

Es ist besonders vorteilhaft, wenn die Erweiterung eine teilzylindrische, zur Sprühelektrode parallele Auswölbung ist, deren Wandabstand zur Sprühelektrode, insbesondere zum Sprühelektrodendraht oder zur Kante eines Sprühelektrodenbleches jeweils gleichbleibend ist. Ferner wird vorteilhafterweise vorgeschlagen, dass die beiden Erweiterungen beider Kanalwände einander unversetzt gegenüber liegen.It is particularly advantageous if the extension is a part-cylindrical, parallel to the spray electrode bulge whose wall distance from the spray electrode, in particular to the spray electrode wire or to the edge of a Sprühelektrodenbleches each is the same. Furthermore, it is advantageously proposed that the two extensions of both channel walls are located opposite one another.

Eine platzsparende Bauweise und damit ein verhältnismäßig enges Anordnen der Blechwände zueinander, wobei dennoch ausreichend breite Gesamterweiterungen erreicht werden, wird dann erzielt, wenn die Blechwände in einem zur Sprühelektrode lotrechten Querschnitt S-förmig sind, und eine Hälfte der S-Form zusammen mit einem auf einer ersten Seite benachbarten Blechwände eine Gesamterweiterung und die andere Hälfte der S-Form zusammen mit einem auf der anderen Seite benachbarten Blechwände eine weitere Gesamterweiterung des Kanals bildet.A space-saving design and thus a relatively close arrangement of the metal walls to each other, yet sufficiently broad overall extensions are achieved, is achieved when the metal walls in a perpendicular to the spray elec trode S-shaped cross-section, and a half of the S-shape together with a on a first side adjacent sheet metal walls a total extension and the other half of the S-shape forms a further total extension of the channel together with an adjacent on the other side sheet metal walls.

Vorzugsweise wird vorgeschlagen, dass jede Blechwand zu beiden Seiten der S-Form einen ebenen Endwandbereich bildet, der parallel zur Gas/Luftströmungsrichtung ist und den Ein- oder Auslassbereich für das Gas/die Luft bildet. Dies führt zu einer einfachen Befestigung der Blechwände. Hierbei wird vorgeschlagen, dass durch die Endwandbereiche Stäbe quer zur Strömungsrichtung zur Befestigung der Blechwände (1) verlaufen.Preferably, it is proposed that each sheet metal wall forms on both sides of the S-shape a flat end wall portion that is parallel to the gas / air flow direction and forms the inlet or outlet region for the gas / air. This leads to a simple attachment of the sheet metal walls. In this case, it is proposed that rods extend transversely to the flow direction for fastening the sheet metal walls (1) through the end wall regions.

Ein Ausführungsbeispiel der Erfindung ist in den Zeichnungen dargestellt und wird im folgenden näher beschrieben. Es zeigen

Fig. 1
eine Seitenansicht eines lonisators und
Fig. 2
einen Schnitt durch den lonisator nach A-B in Fig. 1.
An embodiment of the invention is illustrated in the drawings and will be described in more detail below. Show it
Fig. 1
a side view of an ionizer and
Fig. 2
a section through the ionizer to AB in Fig. 1st

Der erfindungsgemäße lonisator wird in Filtergeräten eingesetzt, in denen hinter dem lonisator ein Kollektor geschaltet ist, zwischen dessen parallelen Platten das Gas, insbesondere die Luft strömt, um die aufgeladenen Teilchen/Tröpfchen aufzunehmen.The ionizer according to the invention is used in filter devices in which a collector is connected behind the ionizer, between whose parallel plates the gas, in particular the air flows, to receive the charged particles / droplets.

Im lonisator 1 sind eine größere Anzahl von Blechwänden 2 parallel zueinander und in Richtung 3 eines Gasstromes insbesondere eines Luftstromes befestigt.In the ionizer 1, a larger number of sheet metal walls 2 are mounted parallel to one another and in the direction 3 of a gas stream, in particular an air stream.

Der lonisator weist eine größere Anzahl von Blechwänden 1 auf, die parallel zueinander und zur Richtung 2 des Gasstromes befestigt sind und zwischen sich Kanäle 3 bilden. Zwischen den Blechwänden 1 und parallel zu diesen sind Drähte (oder andere Sprühelektroden) als Sprühelektroden 4 quer zur Strömungsrichtung gespannt. Die Drähte sind oberseitig und unterseitig der Blechwände in der Regel an Klammern 5 befestigt. Statt Drähten können aber auch Blechstreifen zwischen den Blechwänden als Sprühelektroden befestigt sein, wobei eine seitliche Längskante an Stelle des Drahtes liegt und Zähne oder Spitzen dort bildet.The ionizer has a larger number of sheet metal walls 1, which are mounted parallel to each other and to the direction 2 of the gas stream and form channels 3 between them. Between the sheet metal walls 1 and parallel to these wires (or other discharge electrodes) as discharge electrodes 4 are stretched transversely to the flow direction. The wires are on the upper side and underside of the metal walls usually attached to brackets 5. Instead of wires but also metal strips between the metal walls can be attached as a spray electrodes, with a lateral longitudinal edge is located in place of the wire and forms teeth or tips there.

Die Blechwände 1 sind S-förmig gebogen, das heißt sie besitzen einen Querschnitt in S-Form, so dass jedes Blech 1 von einer Seite aus gesehen eine teilzylindrische Erweiterung 6 (Wölbung) und eine daran anschließende teilzylindrische Verengung 7 (Wölbung) aufweist, wobei die Verengung 7 auf ihrer Rückseite wiederum eine Erweiterung 6 für den benachbarten Kanal 3 bildet. Hierbei ist jede zweite Blechwand 1 seitenverkehrt zu den benachbarten Blechwänden aufgestellt, so dass die zwei zueinander zugekehrten teilzylindrischen Erweiterungen 6 zweier benachbarter Blechwände eine Gesamterweiterung 8 des Kanals 3 bilden, in deren Mitte der Sprühelektroden-Draht 4, bzw. die Sprühkante des Sprühelektrodenbleches koaxial einliegt.The sheet metal walls 1 are S-shaped bent, that is, they have a cross section in S-shape, so that each sheet 1 seen from one side of a part-cylindrical extension 6 (buckle) and an adjoining part-cylindrical constriction 7 (curvature), wherein the constriction 7 on its rear side again forms an extension 6 for the adjacent channel 3. In this case, every other sheet metal wall 1 is reversed positioned to the adjacent sheet metal walls, so that the two mutually facing partial cylindrical extensions 6 of two adjacent sheet metal walls form a total extension 8 of the channel 3, in the middle of the spray electrode wire 4, or the spray edge of the Sprühelektrodenbleches coaxial ,

In Strömungsrichtung 2 vor oder hinter der Gesamterweiterung 8 bilden die Blechwände im Kanal eine Gesamtverengung 9 durch die jeweiligen Verengungen 7 der Blechwände 1.In the flow direction 2 before or after the total extension 8, the metal walls in the channel form a total constriction 9 through the respective constrictions 7 of the metal walls. 1

Die Kanalgesamterweiterung 8 vergrößert die normale Kanalbreite B um das 1,5-fache, wobei die Kanalbreite im Bereich der Verengung die halbe normale Kanalbreite B beträgt.The total channel extension 8 increases the normal channel width B by 1.5 times, with the channel width in the area of the constriction being half the normal channel width B.

Zu Beginn und am Ende der Kanäle sind die Blechwände gerade bzw. ungewölbt eben und parallel zueinander mit einer Kanalbreite B. Die ebenen Anfangs- und Endbereiche 10 der Blechwände 1 sind von lotrecht zu den Wänden 1 angeordneten Stangen 11 durchquert, die die Blechwände 1 befestigt halten.At the beginning and at the end of the channels, the sheet metal walls are straight or not curved flat and parallel to each other with a channel width B. The planar beginning and end portions 10 of the sheet metal walls 1 are crossed by perpendicular to the walls 1 arranged rods 11, which fixes the metal walls 1 hold.

Im Ausführungsbeispiel haben die Erweiterungen und Verengungen der Blechwände jeweils eine teilzylindrische Form. Hier sind aber auch andere Formen möglich. Die Querschnitte der Erweiterungen und Verengungen können zum Beispiel teilelliptisch oder mehreckig sein.In the exemplary embodiment, the extensions and constrictions of the sheet metal walls each have a part-cylindrical shape. But here are other forms possible. The cross-sections of the extensions and constrictions may, for example, be partially elliptical or polygonal.

Claims (6)

  1. loniser for filter apparatus, in which the solid or liquid particles contained in a gas, particularly in the air are electrically charged in the ioniser, in order afterward to be precipitated between the plates of a collector, in which in the ioniser several longitudinal discharge electrodes, particularly discharge electrode wires (4) are arranged tensioned in parallel to each other and transversely to the stream of gas / air and sheet metal walls (1) are arranged between the discharge electrode wires (4), which form gas / air channels (3), between which the discharge electrodes (4) are arranged centrically, characterised in that at least one sheet metal wall (1), particularly the two sheet metal walls (1) at the sides of a discharge electrode (4) each have an extension (6), which form an overall extension (8) of the channel (3).
  2. loniser according to claim 1, characterised in that the extension (6) is a partially cylindrical bulge, which is parallel to the discharge electrode (4), the wall clearance of said bulge to the discharge electrode, particularly the discharge electrode wire or to the edge of a discharge electrode plate being constant in each case.
  3. loniser according to claim 1 or 2, characterised in that both extensions (6) of both channel walls (1) are located opposite to each other in a non-offset manner.
  4. loniser according to one of the preceding claims, characterised in that the sheet metal walls (1) are S-shaped in a cross-section perpendicular to the discharge electrode (4) and a half of the S-shape together with a sheet metal wall (1), which is adjacent on a first side form an overall extension (8) and the other half of the S-shape together with a sheet metal wall (1), which is adjacent on the other side form another overall extension (8) of the channel (3).
  5. loniser according to one of the preceding claims, characterised in that each sheet metal wall (1) forms an even end wall area (10) on both sides of the S-shape, said end wall area being parallel to the gas / air flow direction (2) and forms an inlet and outlet area for the gas / air.
  6. loniser according to claim 5, characterised in that rods (11) run through the end wall areas (10) transversely to the flow direction to the fastening of the sheet metal walls (11).
EP02018566A 2001-09-29 2002-08-16 Ioniser for filter apparatus Revoked EP1297894B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10148390 2001-09-29
DE10148390.2A DE10148390B4 (en) 2001-09-29 2001-09-29 Ionizer for a filter device

Publications (3)

Publication Number Publication Date
EP1297894A2 EP1297894A2 (en) 2003-04-02
EP1297894A3 EP1297894A3 (en) 2006-03-29
EP1297894B1 true EP1297894B1 (en) 2007-07-25

Family

ID=7700973

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02018566A Revoked EP1297894B1 (en) 2001-09-29 2002-08-16 Ioniser for filter apparatus

Country Status (3)

Country Link
EP (1) EP1297894B1 (en)
AT (1) ATE367864T1 (en)
DE (2) DE10148390B4 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011052946A1 (en) 2011-08-24 2013-02-28 Institut Für Luft- Und Kältetechnik Gemeinnützige Gmbh Electrical separation device for filtering particles from gas flow by electrostatic separation, has inlet and suction openings that are arranged so that gas flows to collector through flow channel along wave crest extending direction
WO2021099110A1 (en) 2019-11-19 2021-05-27 BSH Hausgeräte GmbH Electrostatic filter unit for an air cleaning device and air cleaning device

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1356462A (en) * 1920-10-19 Apparatus por the electrical precipitation of suspended matter in
DE684342C (en) * 1937-11-13 1939-11-27 Siemens Lurgi Cottrell Elektro Electrostatic precipitator with corrugated collecting electrodes
DE1557132A1 (en) * 1966-01-07 1970-03-26 Metallgesellschaft Ag Precipitation electrode field for electrostatic dust collectors
DE2364352A1 (en) * 1973-12-22 1975-06-26 Hermann Dipl Ing Dr Ing Krug Configuration of electrostatic precipitator electrodes - with partial arcuate curvatures centred on corona section
US4124359A (en) * 1977-05-02 1978-11-07 Flow Industries, Inc. Electrostatic precipitator
DE4139474A1 (en) * 1990-11-30 1992-06-04 Toshiba Kawasaki Kk Electro-dust sepn. plant - comprises ioniser to charge dust particles, separator, electrostatic filter and meshed electrodes
DE29602206U1 (en) * 1996-02-09 1996-04-04 Ilt Ind Luftfiltertech Gmbh Ionizer

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011052946A1 (en) 2011-08-24 2013-02-28 Institut Für Luft- Und Kältetechnik Gemeinnützige Gmbh Electrical separation device for filtering particles from gas flow by electrostatic separation, has inlet and suction openings that are arranged so that gas flows to collector through flow channel along wave crest extending direction
DE102011052946B4 (en) * 2011-08-24 2016-01-07 Institut Für Luft- Und Kältetechnik Gemeinnützige Gmbh electrostatic
WO2021099110A1 (en) 2019-11-19 2021-05-27 BSH Hausgeräte GmbH Electrostatic filter unit for an air cleaning device and air cleaning device

Also Published As

Publication number Publication date
EP1297894A3 (en) 2006-03-29
DE10148390A1 (en) 2003-04-24
EP1297894A2 (en) 2003-04-02
ATE367864T1 (en) 2007-08-15
DE10148390B4 (en) 2015-11-19
DE50210543D1 (en) 2007-09-06

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