EP0340471A2 - Radial fan with integral dirt separator - Google Patents

Radial fan with integral dirt separator Download PDF

Info

Publication number
EP0340471A2
EP0340471A2 EP89106120A EP89106120A EP0340471A2 EP 0340471 A2 EP0340471 A2 EP 0340471A2 EP 89106120 A EP89106120 A EP 89106120A EP 89106120 A EP89106120 A EP 89106120A EP 0340471 A2 EP0340471 A2 EP 0340471A2
Authority
EP
European Patent Office
Prior art keywords
radial fan
air
guide devices
housing wall
radial
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
EP89106120A
Other languages
German (de)
French (fr)
Other versions
EP0340471B1 (en
EP0340471A3 (en
Inventor
Christian Florin
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.)
ABB Asea Brown Boveri Ltd
ABB AB
Original Assignee
ABB Asea Brown Boveri Ltd
Asea Brown Boveri AB
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6353308&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0340471(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by ABB Asea Brown Boveri Ltd, Asea Brown Boveri AB filed Critical ABB Asea Brown Boveri Ltd
Priority to AT89106120T priority Critical patent/ATE77678T1/en
Publication of EP0340471A2 publication Critical patent/EP0340471A2/en
Publication of EP0340471A3 publication Critical patent/EP0340471A3/en
Application granted granted Critical
Publication of EP0340471B1 publication Critical patent/EP0340471B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
    • F04D29/701—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps
    • F04D29/703—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps specially for fans, e.g. fan guards
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
    • F04D29/4226—Fan casings
    • F04D29/4233—Fan casings with volutes extending mainly in axial or radially inward direction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/44—Fluid-guiding means, e.g. diffusers
    • F04D29/46—Fluid-guiding means, e.g. diffusers adjustable
    • F04D29/462—Fluid-guiding means, e.g. diffusers adjustable especially adapted for elastic fluid pumps

Definitions

  • the invention relates to a radial fan, which is arranged coaxially in a cylindrical air duct housing, with axial inflow and essentially axial outflow through an annular space between the radial impeller and the housing wall.
  • the invention relates to a state of the art, as it is for example from the special print of the magazine "Electric trains” 7/1987, "The electric locomotives RE 414 of the BT and the SZU with three-phase current technology" (publication no. CH-VT 1371 87D by the applicant), p. 7, picture 10.
  • Modern electric traction vehicles require large amounts of cooling air to cool the electrical and electronic apparatus installed on the traction vehicle and to cool the traction motors.
  • This cooling air is drawn in via ventilation grilles or blinds using axial or radial fans. After flowing through the various coolers or traction motors, the heated air exits outside.
  • suction paths must be designed so that entrained dust, snow and rain are largely separated from the components to be cooled.
  • Previously used separators either require large suction areas (e.g. grids with Mat filters) and periodic maintenance or considerable installation volume (e.g. acceleration filter) with installation of additional flushing devices.
  • a centrifugal separator for separating dust, snow and water drops from the cooling air for an electrical machine consisting of a cylindrical housing, an air flow guide body and a collection container for dust, snow and water drops which is circular in cross section and is attached to the cylindrical housing.
  • an axial counterflow fan consisting of two fans rotating against each other;
  • An axial air flow guide body is provided on the air outlet side of the counterflow fan, which on the one hand has radially three-dimensionally curved guide vanes on the air outlet side of the counterflow fan, which are fastened in the cylindrical housing and deflect the air flow spirally around the air flow guide body and on the other hand has radially three-dimensionally oppositely curved guide vanes at its end. which are attached to the inside of the cylindrical collecting container which is connected to the cylindrical housing and has an annular opening in the direction of the counterflow fan.
  • the collecting container is designed in the shape of a screw and has a nozzle-shaped outlet opening, the screw being designed to fall in the direction of this outlet opening.
  • the noise generated by it is used Axial fan considerably or disruptively at the necessary high speed.
  • the invention has for its object to provide a radial fan with integrated dirt separation, which is characterized by a small footprint, acceptable noise removal and high separation efficiency.
  • this object is achieved in that, at the level of the fan wheel of the radial fan, the housing wall is provided over its entire circumference with guide devices which form outflow channels or screens between them, through which a fraction of the air conveyed by the radial fan can be guided in a separation space, which separating space essentially completely surrounds the outflow space.
  • the guide devices are preferably formed in one piece with the housing wall and are formed by wall parts bent out of the wall by a few angular degrees. In this way, they act as baffle plates, on which dirt can settle, but which is entrained in the outflow channel due to the high flow velocity.
  • the amount of purging air flowing through these channels can be adapted to the respective operating conditions, purging air amounts between 10 and 15% of the total amount of air conveyed by the radial fan proving to be expedient.
  • the guide devices can be designed as adjustable slats, which are activated, for example, by a common adjusting and locking means, which gave way, for example, for winter use is where large amounts of flying snow have to be separated.
  • a radial fan wheel 3 driven by a motor 2 is arranged concentrically in a cylindrical air guide housing 1 and held by a motor mount 4.
  • the motor mount 4 is supported on the air duct housing 1 via radial webs 5.
  • the air duct housing 1 continues on the outflow side via a flange connection 6 in an outflow pipe 7.
  • the air conveyed by the centrifugal fan is fed from there to the individual machine and system parts to be cooled, such as air / oil coolers, traction motors, etc. (cf. the cooling concept shown in Figure 12 in the magazine "Electric Railways" mentioned at the beginning).
  • the inflow end of the air duct housing 1 is also connected via a flange connection 8 to an inflow pipe 9, which leads to the air inflow openings on the upper part of the locomotive box (see upper side view in Figure 10, op. Cit.).
  • the wall of the air duct housing 1 is provided with guide devices.
  • these consist of lamellae 10 which are made in one piece with the wall and are bent outwards therefrom and which extend uniformly over the entire wall circumference.
  • a separating space 11 designed as an annular channel with a cross section widening in the direction of rotation of the fan surrounds the wall zone formed by the bent-out slats 10.
  • the separation chamber 11 is connected via a flange connection 12 to a pipe 13, which preferably leads to the underside of the locomotive box.
  • the amount of purge air can be increased by Aperture or adjustment of the slats 10 are enlarged. This is shown schematically in the development of the subject of the invention according to FIG. 3.
  • the connection between the outflow space 14 of the fan and the separating space 11 is made through openings 15 in the wall of the ventilation housing 1.
  • slats 16 serving as guide devices can be pivoted, e.g. attached via a self-locking hinge 17.
  • the opening angle of the slats 16 determines the amount of purge air through the openings 15.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Motor Or Generator Cooling System (AREA)
  • Filters For Electric Vacuum Cleaners (AREA)
  • Separating Particles In Gases By Inertia (AREA)
  • Feeding And Controlling Fuel (AREA)
  • Grinding-Machine Dressing And Accessory Apparatuses (AREA)
  • Reciprocating Pumps (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)

Abstract

Bei einem insbesondere für Triebfahrzeuge geeigneten Radiallüfter wird ein 10-15 % grosser Teil der geförderten Luftmenge radial durch Leiteinrichtungen (10), welche gleichzeitig als Abscheider dienen, aus dem Kühlluftweg geleitet, der Hauptanteil gelangt nach 90°-Umlenkung zu den Kühlern. Auf diese Weise werden Schmutzteile wie Staub, Schnee, Sprühwasser etc. wirksam von den Kühlern ferngehalten.In the case of a radial fan, which is particularly suitable for traction vehicles, a 10-15% large part of the air volume conveyed is guided radially out of the cooling air path by guide devices (10), which also serve as separators, the main part reaching the coolers after a 90 ° deflection. In this way, dirt parts such as dust, snow, spray water etc. are effectively kept away from the coolers.

Description

Technisches GebietTechnical field

Die Erfindung bezieht sich auf einen Radiallüfter, der koaxial in einem zylindrischen Luftführungsgehäuse angeordnet ist, mit axialer Zuströmung und im wesentlichen axialer Abströmung durch einen Ringraum zwischen Radiallüfterrad und Gehäusewand. Die Erfindung nimmt dabei Bezug auf einen Stand der Technik, wie er sich beispielsweise aus dem Sonderdruck der Zeitschrift "Elek­trische Bahnen" 7/1987, "Die elektrischen Lokomotiven RE 414 der BT und der SZU mit Drehstromtechnik" (Druckschrift Nr. CH-­VT 1371 87D der Anmelderin), S. 7, Bild 10, ergibt.The invention relates to a radial fan, which is arranged coaxially in a cylindrical air duct housing, with axial inflow and essentially axial outflow through an annular space between the radial impeller and the housing wall. The invention relates to a state of the art, as it is for example from the special print of the magazine "Electric trains" 7/1987, "The electric locomotives RE 414 of the BT and the SZU with three-phase current technology" (publication no. CH-VT 1371 87D by the applicant), p. 7, picture 10.

Technologischer Hintergrund und Stand der TechnikTechnological background and state of the art

Moderne elektrische Triebfahrzeuge erfordern grosse Kühlluft­mengen zur Kühlung der auf dem Triebfahrzeug installierten elektrischen und elektronischen Apparate und zur Kühlung der Fahrmotoren. Diese Kühlluft wird über Lüftungsgitter oder Ja­lousien mittels Axial- oder Radialventilatoren angesaugt. Nach Durchströmen der verschiedenen Kühler bzw. der Fahrmotoren tritt die erwärmte Luft wieder ins Freie aus.Modern electric traction vehicles require large amounts of cooling air to cool the electrical and electronic apparatus installed on the traction vehicle and to cool the traction motors. This cooling air is drawn in via ventilation grilles or blinds using axial or radial fans. After flowing through the various coolers or traction motors, the heated air exits outside.

Die Ansaugwege müssen so ausgebildet sein, dass mitgerissener Staub, Schnee und Regen zum grossen Teil vor den zu kühlenden Komponenten abgeschieden werden. Bisher gebräuchliche Abschei­der erfordern entweder grosse Ansaugflächen (z.B. Gitter mit Mattenfiltern) und periodische Wartung oder aber beträchtliche Einbauvolumen (z.B. Beschleunigungsfilter) mit Installation zusätzlicher Spüleinrichtungen.The suction paths must be designed so that entrained dust, snow and rain are largely separated from the components to be cooled. Previously used separators either require large suction areas (e.g. grids with Mat filters) and periodic maintenance or considerable installation volume (e.g. acceleration filter) with installation of additional flushing devices.

Mit speziell aufgebauten Lüftungsgittern, wie sie beispiels­weise im Buch von Sachs "Elektrische Triebfahrzeuge", 2. Auf­lage, Band 1, Springer Verlag, Wien/New York 1973, S. 721-728, beschrieben sind, lassen sich die heutigen Anforderungen in be­stimmten Fällen nicht mehr erfüllen.Today's requirements can be met in certain cases with specially constructed ventilation grilles, as described, for example, in the book by Sachs "Electrical Power Vehicles", 2nd edition, Volume 1, Springer Verlag, Vienna / New York 1973, pp. 721-728 no longer meet.

Ein Weg zur Erhöhung des Abscheidungswirkungsrades ist in der AT-PS 375 843 beschrieben. Aus dieser Druckschrift ist ein Fliehkraftabscheider zur Abscheidung von Staub, Schnee und Wassertropfen aus der Kühlluft für eine elektrische Maschine bekannt, bestehend aus einem zylindrischen Gehäuse, einem Luft­stromführungskörper und einem im Querschnitt kreisringförmigen am zylindrischen Gehäuse befestigten Auffangbehälter für Staub, Schnee und Wassertropfen. In dem zylindrischen Gehäuse ist ein axiales Gegenstromgebläse, bestehend aus zwei gegeneinander ro­tierenden Lüftern; an der Luftaustrittsseite des Gegenstromge­bläses ist ein axialer Luftstromführungskörper vorgesehen, wel­cher einerseits bei der Luftaustrittsseite des Gegenstromge­bläses radial dreidimensional gekrümmte Leitschaufeln aufweist, die im zylindrischen Gehäuse befestigt sind und den Luftstrom spiralförmig um den Lufstromführungskörper ablenken und an­dererseits an seinem Ende radial dreidimensional entgegenge­setzt gekrümmte Leitschaufeln aufweist, die innen an dem zylin­drischen Auffangbehälter befestigt sind, der mit dem zylindri­schen Gehäuse verbunden ist und eine kreisringförmige Oeffnung in Richtung des Gegenstromgebläses aufweist.A way to increase the separation efficiency is described in AT-PS 375 843. From this publication, a centrifugal separator for separating dust, snow and water drops from the cooling air for an electrical machine is known, consisting of a cylindrical housing, an air flow guide body and a collection container for dust, snow and water drops which is circular in cross section and is attached to the cylindrical housing. In the cylindrical housing is an axial counterflow fan, consisting of two fans rotating against each other; An axial air flow guide body is provided on the air outlet side of the counterflow fan, which on the one hand has radially three-dimensionally curved guide vanes on the air outlet side of the counterflow fan, which are fastened in the cylindrical housing and deflect the air flow spirally around the air flow guide body and on the other hand has radially three-dimensionally oppositely curved guide vanes at its end. which are attached to the inside of the cylindrical collecting container which is connected to the cylindrical housing and has an annular opening in the direction of the counterflow fan.

Der Auffangbehälter ist schneckenförmig ausgebildet und besitzt eine düsenförmige Auslassöffnung, wobei die Schnecke in Rich­tung dieser Auslassöffnung fallend ausgebildet ist.The collecting container is designed in the shape of a screw and has a nozzle-shaped outlet opening, the screw being designed to fall in the direction of this outlet opening.

Abgesehen von der recht aufwendigen Bauart einer derartigen Kombination ist die Geräuschbildung durch die dabei verwendeten Axiallüfter bei der notwendigen hohen Drehzahl erheblich bzw. störend.Apart from the rather complex design of such a combination, the noise generated by it is used Axial fan considerably or disruptively at the necessary high speed.

Kurze Darstellung der ErfindungBrief description of the invention

Ausgehend vom Bekannten liegt der Erfindung die Aufgabe zu­grunde, einen Radiallüfter mit integrierter Schmutzabscheidung zu schaffen, der sich durch geringen Platzbedarf, annehmbare Geräuschentwinklung und hohen Abscheidungswirkungsgrad aus­zeichnet.Based on the known, the invention has for its object to provide a radial fan with integrated dirt separation, which is characterized by a small footprint, acceptable noise removal and high separation efficiency.

Diese Aufgabe wird erfindungsgemäss dadurch gelöst, dass auf der Höhe des Lüfterrades des Radialventilators die Gehäusewand über ihren gesamten Umfang mit Leiteinrichtungen versehen ist, die zwischen sich Ausströmkanäle bzw. Blenden bilden, durch welche ein Bruchteil der vom Radialventilator geförderten Luft in einem Abscheideraum führbar ist, welcher Abscheideraum den Abströmraum im wesentlichen vollständig ringförmig umgibt.According to the invention, this object is achieved in that, at the level of the fan wheel of the radial fan, the housing wall is provided over its entire circumference with guide devices which form outflow channels or screens between them, through which a fraction of the air conveyed by the radial fan can be guided in a separation space, which separating space essentially completely surrounds the outflow space.

Die Leiteinrichtungen sind dabei vorzugsweise einstückig mit der Gehäusewand ausgebildet und durch um wenige Winkelgrade aus der Wand herausgebogene Wandteile gebildet. Auf diese Weise wirken sie als Prallplatten, auf denen sich intermediär Schmutz absetzen kann, der jedoch infolge der hohen Strömungs­geschwindigkeit im Ausströmkanal mitgerissen wird.The guide devices are preferably formed in one piece with the housing wall and are formed by wall parts bent out of the wall by a few angular degrees. In this way, they act as baffle plates, on which dirt can settle, but which is entrained in the outflow channel due to the high flow velocity.

Die durch diese Kanäle strömende Spülluftmenge kann den jewei­ligen Betriebsverhältnissen angepasst werden, wobei sich Spül­luftmengen zwischen 10 bis 15 % der gesamten vom Radialventi­lator geförderten Luftmenge als zweckmässig erweisen.The amount of purging air flowing through these channels can be adapted to the respective operating conditions, purging air amounts between 10 and 15% of the total amount of air conveyed by the radial fan proving to be expedient.

Um extrem ändernden Betriebszuständen Rechnung zu tragen, kön­nen die Leiteinrichtungen als verstellbare Lamellen, die z.B. durch ein gemeinsames Verstell- und Arretiermittel aktiviert werden, ausgebildet sein, was z.B. für den Wintereinsatz wich­ tig ist, wo grosse Mengen Flugschnee abgeschieden werden müs­sen.In order to take extremely changing operating states into account, the guide devices can be designed as adjustable slats, which are activated, for example, by a common adjusting and locking means, which gave way, for example, for winter use is where large amounts of flying snow have to be separated.

Weitere Einzelheiten und Vorteile der Erfindung werden nach­folgend anhand eines in der Zeichnung dargestellten Ausfüh­rungsbeispiels näher erläutert.Further details and advantages of the invention are explained in more detail below with reference to an embodiment shown in the drawing.

Kurze Beschreibung der ZeichnungBrief description of the drawing

In der Zeichnung zeigt

  • Fig. 1 einen Längsschnitt durch einen Radialventilaor mit integrierter Schmutzabscheidung;
  • Fig. 2 einen Querschnitt durch Fig. 1 längs deren Linie AA;
  • Fig. 3 eine Abwandlung von Fig. 1 mit der Möglichkeit der Verstellung der Leiteinrichtung im vergrösserten Massstab.
In the drawing shows
  • 1 shows a longitudinal section through a radial valve with integrated dirt separation.
  • FIG. 2 shows a cross section through FIG. 1 along the line AA thereof;
  • Fig. 3 shows a modification of Fig. 1 with the possibility of adjusting the guide device on an enlarged scale.

Detaillierte Beschreibung der Erfindung anhand eines AusführungsbeispielsDetailed description of the invention using an exemplary embodiment

In Fig. 1 ist in einem zylindrischen Luftführungsgehäuse 1 ein von einem Motor 2 angetriebenes Radiallüfterrad 3 konzentrisch angeordnet und von einem Motorträger 4 gehalten. Der Motorträ­ger 4 stützt sich über radiale Stege 5 am Luftführungsgehäuse 1 ab. Das Luftführungsgehäuse 1 setzt sich abströmseitig über eine Flanschverbindung 6 in einem Abströmrohr 7 fort. Die vom Radialventilator geförderte Luft wird von dort aus den einzel­nen zu kühlenden Maschinen- und Anlageteilen wie Luft/Oel-Küh­lern, Fahrmotoren etc. zugeführt (vgl. hierzu das in Bild 12 dargestellte Kühlkonzept in der eingangs genannten Zeitschrift "Elektrische Bahnen").In Fig. 1, a radial fan wheel 3 driven by a motor 2 is arranged concentrically in a cylindrical air guide housing 1 and held by a motor mount 4. The motor mount 4 is supported on the air duct housing 1 via radial webs 5. The air duct housing 1 continues on the outflow side via a flange connection 6 in an outflow pipe 7. The air conveyed by the centrifugal fan is fed from there to the individual machine and system parts to be cooled, such as air / oil coolers, traction motors, etc. (cf. the cooling concept shown in Figure 12 in the magazine "Electric Railways" mentioned at the beginning).

Das einströmseitige Ende des Luftführungsgehäuses 1 ist gleich­falls über eine Flanschverbindung 8 mit einem Zuströmrohr 9 verbunden, das an die Lufteinströmöffnungen am Oberteil des Lokomotivkastens führt (vgl. obere Seitenansicht im Bild 10, a.a.O.).The inflow end of the air duct housing 1 is also connected via a flange connection 8 to an inflow pipe 9, which leads to the air inflow openings on the upper part of the locomotive box (see upper side view in Figure 10, op. Cit.).

Auf der Höhe des Radiallüfterrades 3 ist die Wand des Luftfüh­rungsgehäuses 1 mit Leiteinrichtungen versehen. Diese bestehen im Beispielsfall aus einstückig mit der Wand ausgeführten und aus dieser nach aussen herausgebogenen Lamellen 10, die sich über den gesamten Wandumfang gleichmässig verteilt erstrecken. Ein als Ringkanal ausgebildeter Abscheideraum 11 mit einem sich in Drehrichtung des Ventilators erweiternden Querschnitt umgibt die durch die herausgebogenen Lamellen 10 gebildete Wandzone. Der Abscheideraum 11 ist über eine Flanschverbindung 12 mit einem Rohr 13 verbunden, das vorzugsweise an die Unterseite des Lokomotivkastens führt.At the level of the radial fan wheel 3, the wall of the air duct housing 1 is provided with guide devices. In the example, these consist of lamellae 10 which are made in one piece with the wall and are bent outwards therefrom and which extend uniformly over the entire wall circumference. A separating space 11 designed as an annular channel with a cross section widening in the direction of rotation of the fan surrounds the wall zone formed by the bent-out slats 10. The separation chamber 11 is connected via a flange connection 12 to a pipe 13, which preferably leads to the underside of the locomotive box.

Gelangen beim Betrieb des Lüfters mit der Ansaugluft Staub, Spritzwasser etc. in den Radiallüfter, so wirkt auf die Luft und diese Masseteilchen unterschiedliche Fliehkraft. Die Unmit­telbar nach dem Radaustritt erfolgende 90°-Umlenkung in axialer Richtung bewirkt eine Trennung von Luft und in ihr enthaltenen Masseteilchen und eine direkte Abscheidung der mit grösserer Fliehkraft (als die Luft) behafteten Masseteilchen an den La­mellen 10. Durch die Zwischenräume zwischen den einzelnen Lamellen 10 gebildete Oeffnungen (Blenden) strömt ein Bruchteil der vom Radialventilator geförderten Luft (typisch 10-15 %) als Spülluft und reisst wegen der hohen Strömungsgeschwindigkeit in den Blenden die abgeschiedenen Masseteilchen mit. Durch die Spiralform des Abscheideraums wird sichergestellt, dass die Abscheidewirkung über den gesamten Umfang etwa gleichmässig ist. Anstelle einer 360°-Spirale, wie sie in Fig. 2 veranschau­licht ist, können auch zwei 180°-Spiralen vorgesehen werden.If dust, spray water etc. get into the radial fan when the fan is operating with the intake air, the centrifugal force acts on the air and these mass particles. The 90 ° deflection in the axial direction immediately after the wheel exits causes air to separate and the mass particles contained therein and direct separation of the mass particles with greater centrifugal force (than the air) on the fins 10. Due to the spaces between the individual fins 10 openings (orifices) flow a fraction of the air conveyed by the radial fan (typically 10-15%) as purge air and, due to the high flow velocity in the orifices, entrains the separated mass particles. The spiral shape of the separation area ensures that the separation effect is approximately uniform over the entire circumference. Instead of a 360 ° spiral, as illustrated in FIG. 2, two 180 ° spirals can also be provided.

Um unterschiedlichen Schmutzmengen Rechnung zu tragen, z.B. bei Winterbetrieb, kann die Spülluftmenge durch Vergrösserung der Blenden bzw. Verstellen der Lamellen 10 vergrössert werden. In der Weiterbildung des Erfindungsgegenstandes nach Fig. 3 ist dies schematisch dargestellt.In order to take different amounts of dirt into account, e.g. during winter operation, the amount of purge air can be increased by Aperture or adjustment of the slats 10 are enlarged. This is shown schematically in the development of the subject of the invention according to FIG. 3.

Die Verbindung zwischen dem Ausströmraum 14 des Ventilators und dem abscheideraum 11 ist durch Durchbrüche 15 in der Wand des Lüftungsgehäuses 1 bewerkstelligt. An den zwischen den Durch­brüchen verbleibenden Stegen sind als Leiteinrichtung dienende Lamellen 16 schwenkbar, z.B. über ein selbstklemmendes Schar­nier 17, befestigt. Der Oeffnungswinkel der Lamellen 16 be­stimmt die Spülluftmenge durch die Durchbrüche 15.The connection between the outflow space 14 of the fan and the separating space 11 is made through openings 15 in the wall of the ventilation housing 1. On the webs remaining between the openings, slats 16 serving as guide devices can be pivoted, e.g. attached via a self-locking hinge 17. The opening angle of the slats 16 determines the amount of purge air through the openings 15.

Claims (5)

1. Radiallüfter, der koaxial in einem zylindrischen Luftfüh­rungsgehäuse (1) angeordnet ist, mit axialer Zuströmung und im wesentlichen axialer Abströmung durch einen Ring­raum (14) zwischen Radiallüfterrad (3) und Gehäusewand, dadurch gekennzeichnet, dass auf der Höhe des Radiallüf­terrades (3) die Gehäusewand über ihren gesamten Umfang mit Leiteinrichtungen (10,16) versehen ist, die zwischen sich Ausströmkanäle (15) oder Blenden bilden, durch welche ein Bruchteil der vom Radialventilator (3) geförderten Luft in einemn Abscheideraum (11) führbar ist, welcher Abscheideraum (11) den genannten Ringraum (14) im wesent­lichen ringförmig umgibt.1. Radial fan, which is arranged coaxially in a cylindrical air duct housing (1), with axial inflow and essentially axial outflow through an annular space (14) between the radial fan wheel (3) and the housing wall, characterized in that at the height of the radial fan wheel (3) the housing wall is provided over its entire circumference with guide devices (10, 16) which form outflow channels (15) or screens between them, through which a fraction of the air conveyed by the radial fan (3) can be guided in a separating space (11), which separating space (11) surrounds said annular space (14) essentially in an annular manner. 2. Radiallüfter nach Anspruch 1, dadurch gekennzeichnet, dass der Abscheideraum (11) einen sich in Drehrichtung des Ra­dialventilators (3) erweiternden Querschnitt aufweist.2. A radial fan according to claim 1, characterized in that the separating space (11) has a cross section which widens in the direction of rotation of the radial fan (3). 3. Radiallüfter nach Anspruch 1 oder 2, dadurch gekennzeich­net, dass die Leiteinrichtungen als einstückig mit der Gehäusewand ausgeführte Lamellen (10) ausgebildet sind.3. Radial fan according to claim 1 or 2, characterized in that the guide devices are constructed as lamellae (10) made in one piece with the housing wall. 4. Radiallüfter nach Anspruch 1 oder 2, dadurch gekennzeich­net, dass die Leiteinrichtungen als verstellbare Lamellen (16) ausgebildet sind, die an der Gehäusewand schwenkbar befestigt sind.4. Radial fan according to claim 1 or 2, characterized in that the guide devices are designed as adjustable fins (16) which are pivotally attached to the housing wall. 5. Radiallüfter nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die zwischen den Leiteinrichtungen abströmende Spülluft 10-15 % der vom Radialventilator (3) geforderten Luftmenge beträgt.5. Radial fan according to one of claims 1 to 4, characterized in that the purge air flowing out between the guide devices is 10-15% of the amount of air required by the radial fan (3).
EP89106120A 1988-04-30 1989-04-07 Radial fan with integral dirt separator Expired - Lifetime EP0340471B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89106120T ATE77678T1 (en) 1988-04-30 1989-04-07 RADIAL FAN WITH INTEGRATED DIRT SEPARATOR.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3814721 1988-04-30
DE3814721A DE3814721A1 (en) 1988-04-30 1988-04-30 RADIAL FAN WITH INTEGRATED DIRT SEPARATOR

Publications (3)

Publication Number Publication Date
EP0340471A2 true EP0340471A2 (en) 1989-11-08
EP0340471A3 EP0340471A3 (en) 1990-01-17
EP0340471B1 EP0340471B1 (en) 1992-06-24

Family

ID=6353308

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89106120A Expired - Lifetime EP0340471B1 (en) 1988-04-30 1989-04-07 Radial fan with integral dirt separator

Country Status (10)

Country Link
US (1) US4971518A (en)
EP (1) EP0340471B1 (en)
AT (1) ATE77678T1 (en)
AU (1) AU620607B2 (en)
CA (1) CA1333384C (en)
DE (2) DE3814721A1 (en)
DK (1) DK173022B1 (en)
ES (1) ES2033043T3 (en)
NO (1) NO891428L (en)
ZA (1) ZA893069B (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0525366A2 (en) * 1991-06-18 1993-02-03 Kuraco Limited Grease extractor
WO1994005628A1 (en) 1992-08-31 1994-03-17 Acic (Canada) Inc. Synthesis of 2-substituted quinazoline compounds (such as terazosin) and meobentine and bethanidine and intermediates therefor
FR2909729A1 (en) * 2006-12-11 2008-06-13 Renault Sas TURBOCOMPRESSOR WITH INTEGRATED CYCLONE FILTER AND CYCLONE FILTRATION METHOD IN TURBOMACHINE COMPRESSOR CASE
WO2011107267A3 (en) * 2010-03-04 2012-03-29 Berling Gmbh Air extraction device and method for removing particles carried by an air flow
CN105937501A (en) * 2016-06-24 2016-09-14 张家港市众鑫风机有限公司 Draught fan with automatic cleaning function

Families Citing this family (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE469607B (en) * 1992-06-16 1993-08-02 Atlas Copco Tools Ab PRESSURE AIR TURBINE WITH PARTICLE OUTPUT CHANNEL
US5385612A (en) * 1992-09-29 1995-01-31 Li; Chou H. Cleaning system
US5711326A (en) * 1995-08-25 1998-01-27 Whirlpool Corporation Dishwasher accumulator soil removal grating for a filter system
US5779812A (en) * 1995-08-25 1998-07-14 Whirlpool Corporation Multi-mesh mechanical filter screen system for dishwashers
US5803100A (en) 1995-08-25 1998-09-08 Whirlpool Corporation Soil separation channel for dishwasher pump system
US5770058A (en) * 1995-09-29 1998-06-23 Whirlpool Corporation Centrifugal separator
US6319304B1 (en) 1998-08-10 2001-11-20 Sy-Klone Company, Inc. Powered low restriction air precleaner device and method for providing a clean air flow to an apparatus such as a combustion engine air intake, engine cooling system, ventilation system and cab air intake system
US6167960B1 (en) 1998-08-17 2001-01-02 Emmanuel G. Moya Protection of downwell pumps from sand entrained in pumped fluids
US6338745B1 (en) 1999-03-12 2002-01-15 Sy-Klone Company, Inc. Air cleaner
US6394183B1 (en) 2000-07-25 2002-05-28 Schlumberger Technology Corporation System and method for removing solid particulates from a pumped wellbore fluid
DE10239246C1 (en) † 2002-08-22 2003-08-21 Rational Ag Fan wheel for cooking appliance has projection extending diagonally across outer surface of each fan blade for preventing deposition of fat on heating or heat exchange device at rear of fan wheel
JP2005123448A (en) * 2003-10-17 2005-05-12 Fanuc Ltd Turbo blower for laser oscillator
US7114572B2 (en) * 2004-01-15 2006-10-03 Schlumberger Technology Corporation System and method for offshore production with well control
DE102006044833B4 (en) * 2006-09-20 2010-01-21 Babcock Borsig Service Gmbh Centrifugal separator and method for sifting
EP2014346A1 (en) 2007-07-03 2009-01-14 Evodos B.V. Separating device
US8668560B2 (en) 2007-09-27 2014-03-11 Dresser, Inc. Shielding electronic components from liquid
US9586807B2 (en) * 2007-09-27 2017-03-07 Wayne Fueling Systems Llc Maintaining an operational temperature range
GB0911935D0 (en) 2009-07-09 2009-08-19 Valtra Oy Ab Utility vehicle ventilation system
AR078918A1 (en) 2010-11-05 2011-12-14 Ota Tomio VACUUM, VAPOR AND SMOKE VERTICAL VACUUM CLEANER, VAPOR AND SMOKE BY CHANGE OF AIR ADDRESS, FOR MECHANIZED CENTER, LATHE OR OTHER MACHINES THAT GENERATE VAPOR OF OIL OR REFRIGERANT.
TWI487841B (en) * 2011-05-12 2015-06-11 Adda Corp Heat dissipation fan
US9500129B2 (en) 2012-10-29 2016-11-22 Honeywell International Inc. Turboshaft engines having improved inlet particle scavenge systems and methods for the manufacture thereof
WO2014117031A1 (en) 2013-01-24 2014-07-31 Lp Amina Llc Classifier
CN103236274B (en) * 2013-04-10 2015-09-30 东莞星晖真空镀膜塑胶制品有限公司 Vibrations heating radiator
US10774846B2 (en) * 2016-06-16 2020-09-15 Design West Technologies, Inc. Portable, low-power air filtration system
CN109915389B (en) * 2018-10-24 2020-11-03 关云龙 Centrifugal fan with centrifugal separator
CN109322860A (en) * 2018-10-25 2019-02-12 赖繁荣 A kind of centrifugal fan and sewage disposal system
DE102020209612A1 (en) 2020-07-30 2022-02-03 Robert Bosch Gesellschaft mit beschränkter Haftung liquid pump
DE102022129601B4 (en) 2022-11-09 2024-05-23 Schweerbau International Gmbh & Co. Kg Extraction device for particles during machining of rail tracks

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1447554A (en) * 1919-04-03 1923-03-06 Jones William Anthony Fan
GB821574A (en) * 1957-02-19 1959-10-07 Archibald Johnstone Engineers Improvements in or relating to dust-separators
GB1456219A (en) * 1973-11-28 1976-11-24 Zsoldos G Fan and apparatus including the same
JPS58148300A (en) * 1982-02-25 1983-09-03 Satake Eng Co Ltd Blower device with dust collecting function
US4588351A (en) * 1984-09-21 1986-05-13 General Motors Corporation Centrifugal-type air blower bleed-off arrangement

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH139906A (en) * 1929-06-10 1930-05-15 Simmen Oscar Centrifugal fan with a housing designed as a dust collector.
US1958145A (en) * 1932-05-23 1934-05-08 Jones William Anthony Fan
US2325221A (en) * 1936-12-28 1943-07-27 Walter H Bretzlaff Segregated pressure fan
FR1021679A (en) * 1950-07-08 1953-02-23 Gas and vapor circulation fan
BE499680A (en) * 1950-08-28
US2970234A (en) * 1958-01-24 1961-01-31 Westinghouse Electric Corp Ventilating system for a dynamo-electric machine
US3191364A (en) * 1962-05-28 1965-06-29 American Air Filter Co Centrifugal dust separator
US3408796A (en) * 1964-09-16 1968-11-05 John M. Murray Centrifugal fan separator unit
DE1288187B (en) * 1966-10-26 1969-01-30 Siemens Ag Through-ventilated electrical commutator machine, especially a self-ventilating rail motor
DE1801093A1 (en) * 1968-10-01 1970-07-02 Siemens Ag Through-ventilated electrical commutator machine, in particular self-ventilating railway motor
US3575921A (en) * 1968-12-18 1971-04-20 Dow Corning Organosiloxane polymers
US3796511A (en) * 1972-06-15 1974-03-12 Frigidraulic Inc Blower
FR2379772A1 (en) * 1977-02-07 1978-09-01 Pietracci Exploit Brevets Twin flow room ventilating fan - has housing with sleeve separating concentric flows driven by double bladed rotor
US4155681A (en) * 1977-02-14 1979-05-22 General Electric Company Manifold protection system
CH643918A5 (en) * 1979-04-09 1984-06-29 Arthur Milz CENTRIFUGAL PUMP.
AT375843B (en) * 1982-12-13 1984-09-10 Elin Union Ag Centrifugal separator
DE3546394A1 (en) * 1985-12-31 1987-07-02 Metabowerke Kg Enclosed-ventilated electric motor
FR2611819B1 (en) * 1987-02-25 1989-05-05 Cit Alcatel VACUUM PUMP, ROTARY

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1447554A (en) * 1919-04-03 1923-03-06 Jones William Anthony Fan
GB821574A (en) * 1957-02-19 1959-10-07 Archibald Johnstone Engineers Improvements in or relating to dust-separators
GB1456219A (en) * 1973-11-28 1976-11-24 Zsoldos G Fan and apparatus including the same
JPS58148300A (en) * 1982-02-25 1983-09-03 Satake Eng Co Ltd Blower device with dust collecting function
US4588351A (en) * 1984-09-21 1986-05-13 General Motors Corporation Centrifugal-type air blower bleed-off arrangement

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 7, no. 269 (M-259)(1414) 30 November 1983, & JP-A-58 148300 (SATAKE SEISAKUSHO) 03 September 1983, *

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0525366A2 (en) * 1991-06-18 1993-02-03 Kuraco Limited Grease extractor
EP0525366A3 (en) * 1991-06-18 1993-02-24 Kuraco Limited Grease extractor
WO1994005628A1 (en) 1992-08-31 1994-03-17 Acic (Canada) Inc. Synthesis of 2-substituted quinazoline compounds (such as terazosin) and meobentine and bethanidine and intermediates therefor
FR2909729A1 (en) * 2006-12-11 2008-06-13 Renault Sas TURBOCOMPRESSOR WITH INTEGRATED CYCLONE FILTER AND CYCLONE FILTRATION METHOD IN TURBOMACHINE COMPRESSOR CASE
WO2008071501A1 (en) * 2006-12-11 2008-06-19 Renault S.A.S Turbocharger with built-in cyclone filter and cyclone filtration method in the compressor casing of a turbomachine
WO2011107267A3 (en) * 2010-03-04 2012-03-29 Berling Gmbh Air extraction device and method for removing particles carried by an air flow
CN102859201A (en) * 2010-03-04 2013-01-02 贝尔林有限公司 Air extraction device and method for removing particles carried by an air flow
CN102859201B (en) * 2010-03-04 2015-11-25 贝尔林有限公司 For separating of air suction device and the method for the particle driven in the air stream
CN105937501A (en) * 2016-06-24 2016-09-14 张家港市众鑫风机有限公司 Draught fan with automatic cleaning function

Also Published As

Publication number Publication date
AU3321489A (en) 1989-11-02
NO891428D0 (en) 1989-04-06
EP0340471B1 (en) 1992-06-24
ES2033043T3 (en) 1993-03-01
DK195889A (en) 1989-10-31
ZA893069B (en) 1989-12-27
DE3814721A1 (en) 1989-11-09
NO891428L (en) 1989-10-31
US4971518A (en) 1990-11-20
DK195889D0 (en) 1989-04-24
ATE77678T1 (en) 1992-07-15
DE58901727D1 (en) 1992-07-30
DK173022B1 (en) 1999-11-15
AU620607B2 (en) 1992-02-20
EP0340471A3 (en) 1990-01-17
CA1333384C (en) 1994-12-06

Similar Documents

Publication Publication Date Title
EP0340471B1 (en) Radial fan with integral dirt separator
DE60022555T2 (en) Method for cleaning crankcase gases and device suitable for this purpose
DE60037496T2 (en) Ventilation device and electric traction traction motor equipped with such a device
EP1753943B1 (en) Cooling system
EP3184826B1 (en) Ventilator device
DE2848689C2 (en) Wet air dedusting chamber
EP2875718A1 (en) Hand-held work device with a blowpipe
DE4429473C2 (en) Air classifier
DE2659643C2 (en) Device for producing snow
DE3624086C2 (en)
DE102009028125A1 (en) Entry geometry for semi-axial fan wheels
DE4222131C2 (en) Ventilation device for pressure ventilation of surface-ventilated electrical machines
EP0074514B1 (en) Arrangement of a cooler and a motor having a ventilator arranged on its shaft, especially for a screw compressor installation
DE3345069A1 (en) Centrifugal separator
DE202017000498U1 (en) Granule dryer with additional blower
EP0782477B1 (en) Cyclone separator
DE2820234A1 (en) DUST COLLECTOR FAN
DE3905092C2 (en)
EP0303641A1 (en) Transport ventilator.
DE4132339C2 (en) Turbo centrifugal classifier
EP0064739B1 (en) Cooler for a compressor
WO2002073771A2 (en) Fan arrangement for an electrical machine
DE188790C (en)
DE202023105902U1 (en) Extraction system
DE3626393C2 (en) Air filtering arrangement for motor vehicles

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

Kind code of ref document: A2

Designated state(s): AT BE CH DE ES GB IT LI SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH DE ES GB IT LI SE

17P Request for examination filed

Effective date: 19900629

17Q First examination report despatched

Effective date: 19901217

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE ES GB IT LI SE

REF Corresponds to:

Ref document number: 77678

Country of ref document: AT

Date of ref document: 19920715

Kind code of ref document: T

REF Corresponds to:

Ref document number: 58901727

Country of ref document: DE

Date of ref document: 19920730

ITF It: translation for a ep patent filed

Owner name: DE DOMINICIS & MAYER S.

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2033043

Country of ref document: ES

Kind code of ref document: T3

PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

26 Opposition filed

Opponent name: SIEMENS AG GR PA 2 ERL S

Effective date: 19930323

PLBN Opposition rejected

Free format text: ORIGINAL CODE: 0009273

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

Free format text: STATUS: OPPOSITION REJECTED

27O Opposition rejected

Effective date: 19940808

EAL Se: european patent in force in sweden

Ref document number: 89106120.2

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

Ref country code: GB

Payment date: 19990315

Year of fee payment: 11

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

Ref country code: AT

Payment date: 19990324

Year of fee payment: 11

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

Ref country code: SE

Payment date: 19990325

Year of fee payment: 11

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

Ref country code: DE

Payment date: 19990326

Year of fee payment: 11

Ref country code: CH

Payment date: 19990326

Year of fee payment: 11

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

Ref country code: BE

Payment date: 19990414

Year of fee payment: 11

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

Ref country code: ES

Payment date: 19990420

Year of fee payment: 11

REG Reference to a national code

Ref country code: GB

Ref legal event code: 732E

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

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20000407

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20000407

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

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20000408

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20000408

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

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20000430

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20000430

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20000430

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: DAIMLERCHRYSLER AG INTELLECTUAL PROPERTY MANAGEMEN

REG Reference to a national code

Ref country code: CH

Ref legal event code: PUE

Owner name: ASEA BROWN BOVERI AG TRANSFER- DAIMLERCHRYSLER AG

BERE Be: lapsed

Owner name: DAIMLERCHRYSLER A.G.

Effective date: 20000430

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

Effective date: 20000407

EUG Se: european patent has lapsed

Ref document number: 89106120.2

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: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20010201

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20030203

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

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050407