EP1939456B1 - Air passage device - Google Patents

Air passage device Download PDF

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Publication number
EP1939456B1
EP1939456B1 EP07014648.5A EP07014648A EP1939456B1 EP 1939456 B1 EP1939456 B1 EP 1939456B1 EP 07014648 A EP07014648 A EP 07014648A EP 1939456 B1 EP1939456 B1 EP 1939456B1
Authority
EP
European Patent Office
Prior art keywords
section
air passage
passage device
air
fan
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.)
Not-in-force
Application number
EP07014648.5A
Other languages
German (de)
French (fr)
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EP1939456A2 (en
EP1939456A3 (en
Inventor
Andreas Pfannenberg
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Pfannenberg GmbH
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Pfannenberg GmbH
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Filing date
Publication date
Priority claimed from DE202006019690U external-priority patent/DE202006019690U1/en
Priority claimed from DE200620019691 external-priority patent/DE202006019691U1/en
Application filed by Pfannenberg GmbH filed Critical Pfannenberg GmbH
Publication of EP1939456A2 publication Critical patent/EP1939456A2/en
Publication of EP1939456A3 publication Critical patent/EP1939456A3/en
Application granted granted Critical
Publication of EP1939456B1 publication Critical patent/EP1939456B1/en
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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
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
    • F04D25/12—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation the unit being adapted for mounting in apertures
    • 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
    • F04D29/52—Casings; Connections of working fluid for axial pumps
    • F04D29/54—Fluid-guiding means, e.g. diffusers
    • F04D29/541—Specially adapted for elastic fluid pumps
    • F04D29/545—Ducts
    • F04D29/547—Ducts having a special shape in order to influence fluid flow

Definitions

  • the invention relates to an air passage device according to the preamble of claim 1.
  • a filter mat preferably made of a knitted or needled plastic material in the fan to filter out these dust and dirt particles from the conveyed through the fan in a flow direction through air.
  • a filter mat is arranged with a gap between the filter mat and the fan of a basic housing and a fan carrier is sealed against the environment substantially airtight.
  • the filter mats used in these filter fans are arranged between the outer fan grille and the base housing.
  • the fan grid is mediated Clamping or locking connections or screw connections to the basic housing releasably connected.
  • the air outlet of the air passage device is covered in known fans with a grid element that covers either the outlet plan or cupped.
  • the air emerging from the air outlet through the grille element into the housing moves axially or in the direction of flow straight into the housing. Afterwards the air has to distribute itself or an active air distribution has to be done. It is desirable that an active air distribution can be avoided or the air better distributed itself. Furthermore, there is the possibility that parts of the exiting air flow are sucked in particular centrally again into the passage.
  • An air passage device discloses the DE-U-200 16 143 ,
  • This air passage device is designed as a filter fan, which is provided with a covering device for covering the filter mat arranged in the front region of the filter fan.
  • This covering device is provided with an upper frame element closing off the covering device at its upper side, with a lower frame element terminating the covering device on its underside, and with two cheek-shaped retaining elements extending laterally in a longitudinal direction, between which a plurality of spaced apart and substantially parallel mutually arranged lamellar elements are held, in particular are clamped so that an at least the passage or discharge of on the side facing away from the filter fan side of the cover device entering liquid permitting space between the lamellar elements and the front portion of the filter fan is formed.
  • a filter fan for installation in a breakthrough of a wall of a control cabinet with a filter housing a basic housing is known, which is covered with a louvred grille and the louvred grid is connected away with a fan.
  • the basic housing for attaching the fan molded locking cams, which engage in holes in the facing flange of the fan, wherein the base housing L-shaped holding elements are formed facing the the grille remote from the fan flange with Catching cams are provided which engage in holes of this flange, wherein the L-shaped holding elements and the base housing form receptacles in which the angular offset offset to the base housing fan is screwed detent.
  • a protective grid can be latched, which is hood-like, wherein the curvature of the protective grid center has no planar portion which is formed over the entire surface.
  • Object of the present invention is to provide an air passage device according to the type described above in such a way that the air emerging from the air passage device is discharged into the housing in several directions, and a return of air is avoided. This object is achieved in an air passage device with the features specified in claim 1.
  • the invention consists in that a grating element is arranged on the air outlet side of the air passage device over an air outlet having a rising portion and a planar portion, wherein the rising portion merges into the planar portion, and on the planar portion a full-surface portion is provided and in that a diffuser-shaped section is arranged in the side region of the grid element, the section being deflected along the side wall of the fan carrier and opposite the side wall by an internal angle which is between 180 ° and 270 °.
  • the advantage here is that through the structure of the grid element, the outflowing air through the rising portion predominantly in the lateral region of the grid, so rather radially, is discharged, whereby a better mixing is achieved within the housing.
  • the full-surface section acts as a flow obstacle. At the same time the installation depth is reduced compared to conventional oval grid elements.
  • the full-surface section also acts as a blocking element, which prevents the backflow of air into the housing.
  • an increase in the performance of the air power is achieved by preventing the backflow. This is in a range of up to 10%. Furthermore, it is advantageous that a diffuser-like structure of the exhaust side as possible resistance-free air outlet can take place. There are only slight pressure losses.
  • the shape of the diffuser-like section enables a particularly efficient release of air. Moving the starting point to the center causes a reduction of the free discharge surface, whereby the remindsaug Schl is further reduced.
  • the provision of a smooth transition from the side wall to the diffuser-like portion causes less resistance and thus less flow losses in the transition into the diffuser-like portion, even a resistance-free air outlet is feasible.
  • the central provision of a full-area section allows a simple deflection of a portion of the air flow flowing through the air passage device in a radial direction. Provision of a small full-area section with respect to the planar section allows an air flow component axially out of the air passage device.
  • FIG. 1 an air passage device 10 is shown in front view.
  • a so-called design cover 15 is provided, through which air into the air passage device 10 by a blower 20 (see Fig. 5 ) is sucked.
  • the design cover 15 is provided with movable sipe elements 16.
  • the design cover 15 is arranged on a base housing 11, to which a fan support 12 is connected. Within the fan carrier 12, the blower 20 is arranged.
  • the fan carrier has a side wall 19. In the rear region of the side wall 19, a diffuser-like section 22 is arranged. This section 22 is angled relative to the side wall 19 to a transition region.
  • a rear wall 18 is arranged, on which a grid element 30 is arranged.
  • the air passage device 10 in Fig. 2 is shown with open design cover 15. Behind the design cover 15, a filter mat 13 is arranged, which filters out dust from the sucked air. Behind the filter mat 13, a fan grille 14 is arranged. This acts as a fan grid and shields the fan 20 against reaching, for example, when the filter mat 13 is changed.
  • a grid element 30 is arranged, which is connected to the rear wall via fastening portions 34 ( Fig. 3 ).
  • a barred area which consists of a rising area 35 and a planar area 36.
  • the grid element 30 is constructed here from annular bars 31 and carrier webs 33.
  • a plate member 32 is arranged, which acts as a flow resistance and thus as a deflecting element for the exiting air.
  • Fig. 4 shows a rear view analog Fig. 3 with closed design lid.
  • Fig. 5 the air passage device 10 is shown in the installed state in a mounting wall 50.
  • a seal 17 is arranged between the mounting wall 50 and the base housing 11, which ensures that in the transition region from the mounting wall to the air passage device 10 no air can enter.
  • FIG Fig. 6 An enlarged view of the grid element 30 is shown in FIG Fig. 6 shown.
  • area A the sucked air moves toward the grid element 30.
  • the plate member 32 By the plate member 32, the air that meets this deflected to the side.
  • the air flow is divided into an axial component B and a radial component C.
  • the axial component B exits through the planar portion 36 of the grid element.
  • the radial component C exits through the rising portion 35.
  • Additional guide elements o. ⁇ . can be provided.
  • the air can pass through the grating element 30 faster, whereby an increase in the air flow in the fan 20 is accompanied by an increase in performance.
  • the lateral discharge of the air and a reverse suction in the region of the plate member 32 is basically reduced.
  • the provision of the plate member 32 prevents a return flow of the air into the air passage device 10th
  • Fig. 7 the fan carrier 12 is shown cut in a first embodiment.
  • a fan 20 is arranged within the fan carrier 12.
  • the fan 20 consists of a rotor with vanes 27 and a drive 24 in the form of a motor.
  • the wing 27 has a tip 25 and a trailing edge 26.
  • the fan support 12 consists inter alia of the side wall 19 and the diffuser-like running portion 22.
  • a first embodiment of the arrangement of the diffuser-like running portion 22 is in Fig. 7 shown.
  • Another embodiment follows in Fig. 9 ,
  • the diffuser-shaped portion 22 is connected to the side wall 19. However, the connection is made in the end region of the fan carrier 12 in the rear side region 21 of the air passage device 10.
  • the diffuser-like running portion 22 is executed with respect to the side wall 19 incident. The collapse occurs with respect to the side wall by an outer angle ⁇ and an inner angle ⁇ .
  • Fig. 7 the angles between the extension 28 of the side wall 19 and the extension 29 of the diffuser-like section 22 are shown.
  • the starting point 41 of the diffuser-like section 22 with respect to the blower 20 is for Blower drive 24 offset.
  • the offset 39 is in Fig. 7 between the extension 28 of the side wall 19 and the parallels 38 starting from the point of introduction of the diffuser-like section 22 for extending the side wall 28.
  • the attachment point 41 of the diffuser-like section 22 is located immediately behind the trailing edge 26 of the wings 27.
  • Fig. 8 shows one Side view too Fig. 7 with closed illustrated blower support 12 and opened design cover 15th
  • FIG Fig. 9 Another embodiment of the fan support 12 with respect to the arrangement of the diffuser-like section 22 is shown in FIG Fig. 9 shown.
  • the starting point 41 of the diffuser-like section 22 is located in a transition 23 directly to the side wall 19, wherein the transition is made soft to avoid unnecessary flow resistance.
  • the attachment point 41 is arranged at the level of the tip 25 of the wing 27.
  • the grille element 30 is designed so that it does not touch the blower 20 in the event of a change of air direction, although the blower projects with its wings 27 beyond the blower carrier 12.
  • the grid element 30 is again provided centrally with a planar section 36. From the outside to the planar middle section 36, a sloping area 37 is provided, which merges into the planar area 36. Laterally support webs 33 are arranged, are provided on the annular grid bars 31 to provide a comprehensive contact protection for the fan.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)
  • Air-Flow Control Members (AREA)

Description

Die Erfindung betrifft eine Luftdurchtrittsvorrichtung gemäß dem Oberbegriff des Anspruches 1.The invention relates to an air passage device according to the preamble of claim 1.

Bei in einem Gehäuse angeordneten Bauteilen, welche entsprechende Abwärme erzeugen, ist es notwendig, die Abwärme aus dem Gehäuse abzuführen und eine Temperatur in dem Gehäuse durch mehr oder weniger starkes Einblasen oder Absaugen von Umgebungsluft in den Gehäuseinnenraum mittels eines Lüfters zu kontrollieren. Ein bekanntes Beispiel hierfür sind Computergehäuse. Üblicherweise werden derartige Gehäuse mit einem Filterlüfter versehen, welcher entweder ständig läuft oder von einer Steuerung in Abhängigkeit von einer Temperatur im Gehäuse anund abgeschaltet wird. Der Filterlüfter ist in einer Ausnehmung einer Wandung des Gehäuses angeordnet und beispielsweise mittels Schraubverbindungen fixiert. Gleichzeitig sind an einer anderen Stelle des Gehäuses für einen Luftaustritt entsprechende Luftaustrittsschlitze vorgesehen.When arranged in a housing components which generate corresponding waste heat, it is necessary to dissipate the waste heat from the housing and to control a temperature in the housing by more or less strong blowing or suction of ambient air into the housing interior by means of a fan. A well-known example of this is computer cases. Typically, such housings are provided with a filter fan which either runs continuously or is turned off and on by a controller in response to a temperature in the housing. The filter fan is arranged in a recess of a wall of the housing and fixed for example by means of screw. At the same time corresponding air outlet slots are provided at a different location of the housing for an air outlet.

Aufgrund der elektrostatischen Aufladung der elektronischen Bauteile und Komponenten, die im Inneren des Gehäuses angeordnet sind, lagern sich an ihnen Schmutz- und Staubpartikel an, so dass Fehlfunktionen der Bauteile auftreten können. Zur Vermeidung der Verschmutzung ist es bekannt, im Lüfter eine zusätzliche Filtermatte vorzugsweise aus einem gewirkten oder vemadelten Kunststoffmaterial vorzusehen, um diese Staub- und Schmutzpartikel aus der durch den Lüfter in einer Strömungsrichtung hindurch geförderten Luft herauszufiltern. Hierfür ist vorzugsweise in Strömungsrichtung der Luft gesehen vor dem Gebläse des Lüfters eine Filtermatte angeordnet wobei ein Zwischenraum zwischen der Filtermatte und dem Gebläse von einem Grundgehäuse und einem Gebläseträger gegen die Umgebung im Wesentlichen luftdicht abgeschlossen ist. Die bei diesen Filterlüftern verwendeten Filtermatten sind zwischen dem äußeren Lüftergitter und dem Grundgehäuse angeordnet. Das Lüftergitter ist vermittels Klemm- oder Rastverbindungen oder Schraubverbindungen mit dem Grundgehäuse lösbar verbunden.Due to the electrostatic charge of the electronic components and components, which are arranged inside the housing, deposited on them dirt and dust particles, so that malfunction of the components can occur. To avoid contamination, it is known to provide an additional filter mat preferably made of a knitted or needled plastic material in the fan to filter out these dust and dirt particles from the conveyed through the fan in a flow direction through air. For this purpose, preferably seen in the flow direction of the air before the fan of the fan, a filter mat is arranged with a gap between the filter mat and the fan of a basic housing and a fan carrier is sealed against the environment substantially airtight. The filter mats used in these filter fans are arranged between the outer fan grille and the base housing. The fan grid is mediated Clamping or locking connections or screw connections to the basic housing releasably connected.

Der Luftaustritt der Luftdurchtrittsvorrichtung ist bei bekannten Lüftern mit einem Gitterelement bedeckt, das entweder den Austritt plan oder schalenförmig bedeckt. Die aus dem Luftaustritt durch das Gitterelement hindurch in das Gehäuse austretende Luft bewegt sich axial bzw. in Strömungsrichtung gerade in das Gehäuse hinein. Anschließend muss sich die Luft selbst verteilen oder es muss eine aktive Luftverteilung vorgenommen werden. Es ist wünschenswert, dass eine aktive Luftverteilung vermieden werden kann bzw. sich die Luft besser selbst verteilt. Weiterhin besteht die Möglichkeit, dass Teile des austretenden Luftstroms insbesondere mittig wieder in den Durchtritt angesaugt werden.The air outlet of the air passage device is covered in known fans with a grid element that covers either the outlet plan or cupped. The air emerging from the air outlet through the grille element into the housing moves axially or in the direction of flow straight into the housing. Afterwards the air has to distribute itself or an active air distribution has to be done. It is desirable that an active air distribution can be avoided or the air better distributed itself. Furthermore, there is the possibility that parts of the exiting air flow are sucked in particular centrally again into the passage.

Eine Luftdurchtrittsvorrichtung gemäß dem Oberbegriff des Anspruches 1 offenbart die DE-U-200 16 143 . Diese Luftdurchtrittsvorrichtung ist als Filterlüfter ausgebildet, der mit einer Abdeckvorrichtung zum Abdecken der im vorderen Bereich des Filterlüfters angeordneten Filtermatte versehen ist. Diese Abdeckvorrichtung ist mit einem die Abdeckvorrichtung an ihrer Oberseite abschließenden oberen Rahmenelement, mit einem die Abdeckvorrichtung an ihrer Unterseite abschließenden unteren Rahmenelement und mit zwei lateralen, sich randseitig in einer Längsrichtung erstreckenden, wangenförmig ausgebildeten Halteelementen versehen, zwischen denen mehrere beabstandet zueinander und im Wesentlichen parallel zueinander angeordnete Lamellenelemente so gehalten, insbesondere so eingespannt sind, dass ein zumindest das Durchleiten bzw. Ableiten von auf der vom Filterlüfter abgewandten Seite der Abdeckvorrichtung eintretender Flüssigkeit erlaubender Zwischenraum zwischen den Lamellenelementen und dem vorderen Bereich des Filterlüfters ausgebildet ist.An air passage device according to the preamble of claim 1 discloses the DE-U-200 16 143 , This air passage device is designed as a filter fan, which is provided with a covering device for covering the filter mat arranged in the front region of the filter fan. This covering device is provided with an upper frame element closing off the covering device at its upper side, with a lower frame element terminating the covering device on its underside, and with two cheek-shaped retaining elements extending laterally in a longitudinal direction, between which a plurality of spaced apart and substantially parallel mutually arranged lamellar elements are held, in particular are clamped so that an at least the passage or discharge of on the side facing away from the filter fan side of the cover device entering liquid permitting space between the lamellar elements and the front portion of the filter fan is formed.

Mit dieser Ausbildung soll erreicht werden, dass von der vom Filterlüfter abgewandten Seite der Abdeckvorrichtung her eindringende Flüssigkeit, wie Wasser, wirksam und zügig abgeleitet werden kann. Die aus dem Filterlüfter austretende Luft tritt in axialer Richtung aus dem Filterlüfter aus und nicht in mehreren Richtungen in das Gehäuse des Filterlüfters ein.With this design is to be achieved that from the side facing away from the filter fan side of the covering forth penetrating liquid, such as water, can be effectively and quickly dissipated. The air leaving the filter fan exits the filter fan in the axial direction and does not enter the filter fan housing in several directions.

Aus der DE-C-195 36 928 ist ein Filterlüfter für den Einbau in einen Durchbruch einer Wand eines Schaltschrankes mit einem ein Filter aufnehmenden Grundgehäuse bekannt, das mit einem Lamellengitter abgedeckt ist und dem Lamellengitter abgekehrt mit einem Lüfter verbunden ist. Für eine einfachere Montage des Filterlüfters ist vorgesehen, dass das Grundgehäuse zur Befestigung des Lüfters angespritzte Rastnocken aufweist, die in Bohrungen im zugekehrten Flansch des Lüfters einrasten, wobei am Grundgehäuse L-förmige Halteelemente angeformt sind, die dem dem Lamellengitter abgekehrten Flansch des Lüfters zugekehrt mit Rastnocken versehen sind, die in Bohrungen dieses Flansches einrasten, wobei die L-förmigen Halteelemente und das Grundgehäuse Aufnahmen bilden, in die der winkelversetzt an das Grundgehäuse angesetzte Lüfter rastend eindrehbar ist.From the DE-C-195 36 928 is a filter fan for installation in a breakthrough of a wall of a control cabinet with a filter housing a basic housing is known, which is covered with a louvred grille and the louvred grid is connected away with a fan. For a simpler installation of the filter fan is provided that the basic housing for attaching the fan molded locking cams, which engage in holes in the facing flange of the fan, wherein the base housing L-shaped holding elements are formed facing the the grille remote from the fan flange with Catching cams are provided which engage in holes of this flange, wherein the L-shaped holding elements and the base housing form receptacles in which the angular offset offset to the base housing fan is screwed detent.

Auf die dem Grundgehäuse abgekehrte Seite des Lüfters ist ein Schutzgitter einrastbar, das haubenartig ausgebildet ist, wobei die Wölbung des Schutzgitters mittig keinen planen Abschnitt aufweist, der vollflächig ausgebildet ist.On the side facing away from the base housing of the fan, a protective grid can be latched, which is hood-like, wherein the curvature of the protective grid center has no planar portion which is formed over the entire surface.

Aufgabe der vorliegenden Erfindung ist es, eine Luftdurchtrittsvorrichtung gemäß der eingangs beschriebenen Art so auszubilden, dass die aus der Luftdurchtrittsvorrichtung austretende Luft in mehrere Richtungen ins Gehäuse abgegeben wird, und ein Rückansaugen von Luft vermieden wird. Gelöst wird diese Aufgabe bei einer Luftdurchtrittsvorrichtung mit den im Anspruch 1 angegebenen Merkmalen.Object of the present invention is to provide an air passage device according to the type described above in such a way that the air emerging from the air passage device is discharged into the housing in several directions, and a return of air is avoided. This object is achieved in an air passage device with the features specified in claim 1.

Danach besteht die Erfindung darin, dass an der Luftaustrittseite der Luftdurchtrittsvorrichtung über einem Luftaustritt ein Gitterelement angeordnet ist, das einen ansteigenden Abschnitt und einen planen Abschnitt aufweist, wobei der ansteigende Abschnitt in den planen Abschnitt übergeht, und auf dem planen Abschnitt ein vollflächiger Abschnitt vorgesehen ist, und dass im Seitenbereich des Gitterelements ein diffusorartig ausgeführter Abschnitt angeordnet ist, wobei der Abschnitt Bestandteil der Seitenwand des Gebläseträgers und gegenüber der Seitenwand um einen Innenwinkel abgelenkt ist, der zwischen 180° und 270° beträgt.Thereafter, the invention consists in that a grating element is arranged on the air outlet side of the air passage device over an air outlet having a rising portion and a planar portion, wherein the rising portion merges into the planar portion, and on the planar portion a full-surface portion is provided and in that a diffuser-shaped section is arranged in the side region of the grid element, the section being deflected along the side wall of the fan carrier and opposite the side wall by an internal angle which is between 180 ° and 270 °.

Vorteilhaft hierbei ist, dass durch den Aufbau des Gitterelements die abströmende Luft durch den ansteigenden Abschnitt hindurch überwiegend im seitlichen Bereich des Gitters, also eher radial, abgegeben wird, wodurch eine bessere Vermischung innerhalb des Gehäuses erreicht wird.The advantage here is that through the structure of the grid element, the outflowing air through the rising portion predominantly in the lateral region of the grid, so rather radially, is discharged, whereby a better mixing is achieved within the housing.

Dieses wird durch den vollflächigen Abschnitt unterstützt, der als ein Strömungshindernis fungiert. Gleichzeitig wird die Einbautiefe reduziert gegenüber herkömmlichen ovalen Gitterelementen. Der vollflächige Abschnitt wirkt gleichzeitig als Sperrelement, das den Rückfluss von Luft in das Gehäuse hinein verhindert.This is assisted by the full-surface section, which acts as a flow obstacle. At the same time the installation depth is reduced compared to conventional oval grid elements. The full-surface section also acts as a blocking element, which prevents the backflow of air into the housing.

Außerdem wird mit dieser Ausgestaltung noch zusätzlich erreicht, dass durch die Verhinderung der Rückströmung eine Leistungssteigerung der Luftleistung erzielt wird. Diese liegt in einem Bereich von bis zu 10 %. Weiterhin ist vorteilhaft, dass durch den diffusorartigen Aufbau der Abluftseite ein möglichst widerstandsfreier Luftaustritt erfolgen kann. Es treten lediglich geringe Druckverluste auf.In addition, it is additionally achieved with this embodiment that an increase in the performance of the air power is achieved by preventing the backflow. This is in a range of up to 10%. Furthermore, it is advantageous that a diffuser-like structure of the exhaust side as possible resistance-free air outlet can take place. There are only slight pressure losses.

Vorteilhafte Ausgestaltungen der Erfindung sind Gegenstand der Unteransprüche.Advantageous embodiments of the invention are the subject of the dependent claims.

Durch die Ausformung des diffusorartigen Abschnitts wird eine besonders effiziente Luftabgabe ermöglicht. Das Verschieben des Ansatzpunktes hin zum Mittelpunkt bewirkt eine Reduzierung der freien Abgabefläche, wodurch der Rücksaugbereich weiter reduziert wird. Das Vorsehen eines weichen Übergangs von der Seitenwand zum diffusorartigen Abschnitt bewirkt weniger Widerstand und somit weniger Strömungsverluste beim Übergang in den diffusorartigen Abschnitt, wobei sogar ein widerstandsfreie Luftaustritt realisierbar ist.The shape of the diffuser-like section enables a particularly efficient release of air. Moving the starting point to the center causes a reduction of the free discharge surface, whereby the Rücksaugbereich is further reduced. The provision of a smooth transition from the side wall to the diffuser-like portion causes less resistance and thus less flow losses in the transition into the diffuser-like portion, even a resistance-free air outlet is feasible.

Durch das verschließende Anordnen des Gitterelementes wird auf einfache Weise eine Schutzabdeckung der Luftdurchtrittvorrichtung erreicht.By occluding arranging the grid element, a protective cover of the air passage device is achieved in a simple manner.

Durch das lineare Ansteigen gemäß einer weiteren Lehre der Erfindung wird ein radiales Austreten der Luft durch das Gitterelement auf einfache weise begünstigt. Das mittige Anordnen des planen Abschnitt ermöglicht vorteilhafterweise trotz des Vorsehens von Ansteigenden Abschnitten ein gerades Abgeben der Luft in axialer Richtung durch das Gitterelement hindurch.Due to the linear increase according to another teaching of the invention, a radial escape of air through the grid element is favored in a simple manner. The central positioning of the planar section advantageously allows, despite the provision of rising sections, a straight discharge of the air in the axial direction through the grid element.

Das mittige Vorsehen eines vollflächigen Abschnitts ermöglicht eine einfache Umlenkung eines Anteils des durch die Luftdurchtrittsvorrichtung hindurch fließenden Luftstroms in eine radiale Richtung. Ein Vorsehen eines kleinen vollflächigen Abschnitts gegenüber dem planen Abschnitt ermöglicht einen axial aus der Luftdurchtrittsvorrichtung Luftstromanteil. Durch Vorsehen eines scheibenförmigen Plattenkörpers und ein Aufsetzen desselben auf das Gitterelement oder dessen Integrieren in das Gitterelement lässt sich die Aufteilung des Luftstroms auf einfache Weise erreichen. Das parallele Anordnen des planen Abschnitts zum Luftaustritt unterstützt die Aufteilung des Luftstroms auf einfache Art.The central provision of a full-area section allows a simple deflection of a portion of the air flow flowing through the air passage device in a radial direction. Provision of a small full-area section with respect to the planar section allows an air flow component axially out of the air passage device. By providing a disk-shaped plate body and placing it on the grid element or its integration into the grid element, the distribution of the air flow can be achieved in a simple manner. The parallel arrangement of the planar section to the air outlet supports the distribution of the air flow in a simple way.

Ausführungsbeispiele der Erfindung sind in den Zeichnungen dargestellt.
Es zeigen:

Fig. 1
eine räumliche Vorderansicht der Luftdurchtrittsvorrichtung,
Fig. 2
eine räumliche Vorderansicht der Luftdurchtrittsvorrichtung mit geöffneter Frontklappe,
Fig. 3
eine räumliche Rückansicht der Luftdurchtrittsvorrichtung mit geöffneter Frontklappe,
Fig. 4
eine räumliche Draufsicht auf die Rückseite der Luftdurchtrittsvorrichtung,
Fig. 5
eine geschnittene Seitenansicht der Luftdurchtrittsvorrichtung,
Fig. 6
eine Schnittansicht des Gitterelementabschnitts zu Fig. 5,
Fig. 7
eine teilgeschnittene Seitenansicht einer Ausführungsform der Luftdurchtrittsvorrichtung,
Fig. 8
eine Seitenansicht der Luftdurchtrittsvorrichtung mit geöffneter Frontklappe,
Fig. 9
eine teilgeschnittene Seitenansicht einer weiteren Ausführungsform der Luftdurchtrittsvorrichtung, und
Fig. 10
eine teilgeschnittene Seitenansicht einer weiteren Ausführungsform der Luftdurchtrittsvorrichtung.
Embodiments of the invention are illustrated in the drawings.
Show it:
Fig. 1
a spatial front view of the air passage device,
Fig. 2
a spatial front view of the air passage device with open front door,
Fig. 3
a spatial rear view of the air passage device with open front flap,
Fig. 4
a spatial plan view of the back of the air passage device,
Fig. 5
a sectional side view of the air passage device,
Fig. 6
a sectional view of the grid element section to Fig. 5 .
Fig. 7
a partially sectioned side view of an embodiment of the air passage device,
Fig. 8
a side view of the air passage device with open front door,
Fig. 9
a partially sectioned side view of another embodiment of the air passage device, and
Fig. 10
a partially sectioned side view of another embodiment of the air passage device.

In Fig. 1 ist eine Luftdurchtrittsvorrichtung 10 in Frontansicht dargestellt. Auf der Vorderseite, die sich außerhalb eines zu belüftenden Gehäuses (nicht dargestellt) befindet, ist ein so genannter Designdeckel 15 vorgesehen, durch den Luft in die Luftdurchtrittsvorrichtung 10 durch ein Gebläse 20 (siehe Fig. 5) eingesaugt wird. Der Designdeckel 15 ist mit beweglichen Lamellenelementen 16 versehen. Der Designdeckel 15 ist auf einem Grundgehäuse 11 angeordnet, an das sich ein Gebläseträger 12 anschließt. Innerhalb des Gebläseträgers 12 ist das Gebläse 20 angeordnet. Der Gebläseträger weist eine Seitenwand 19 auf. Im hinteren Bereich der Seitenwand 19 ist ein diffusorartig ausgeführter Abschnitt 22 angeordnet. Dieser Abschnitt 22 ist gegenüber der Seitenwand 19 nach einem Übergangsbereich abgewinkelt. An dem Gebläseträger 12 bzw. im diffusorartig ausgeführten Abschnitt 22 ist eine Rückwand 18 angeordnet, auf der ein Gitterelement 30 angeordnet ist.In Fig. 1 an air passage device 10 is shown in front view. On the front side, which is located outside of a housing to be ventilated (not shown), a so-called design cover 15 is provided, through which air into the air passage device 10 by a blower 20 (see Fig. 5 ) is sucked. The design cover 15 is provided with movable sipe elements 16. The design cover 15 is arranged on a base housing 11, to which a fan support 12 is connected. Within the fan carrier 12, the blower 20 is arranged. The fan carrier has a side wall 19. In the rear region of the side wall 19, a diffuser-like section 22 is arranged. This section 22 is angled relative to the side wall 19 to a transition region. On the fan support 12 or in the diffuser-like running section 22, a rear wall 18 is arranged, on which a grid element 30 is arranged.

Die Luftdurchtrittsvorrichtung 10 in Fig. 2 ist mit geöffnetem Designdeckel 15 dargestellt. Hinter dem Designdeckel 15 ist eine Filtermatte 13 angeordnet, die Staub aus der angesaugten Luft ausfiltert. Hinter der Filtermatte 13 ist ein Lüftergitter 14 angeordnet. Dieses fungiert als Gebläsegitter und schirmt das Gebläse 20 gegen Hineingreifen ab, wenn beispielsweise die Filtermatte 13 gewechselt wird.The air passage device 10 in Fig. 2 is shown with open design cover 15. Behind the design cover 15, a filter mat 13 is arranged, which filters out dust from the sucked air. Behind the filter mat 13, a fan grille 14 is arranged. This acts as a fan grid and shields the fan 20 against reaching, for example, when the filter mat 13 is changed.

Auf der Rückwand 18 ist ein Gitterelement 30 angeordnet, dass mit der Rückwand über Befestigungsabschnitte 34 verbunden ist (Fig. 3). Im offenen Rückseitenbereich 21, durch den die vom Gebläse 20 angesaugte Luft austritt, befindet sich ein vergitterter Bereich, der aus einem ansteigenden Bereich 35 und einem planen Bereich 36 besteht. Das Gitterelement 30 ist hier aus ringförmigen Gitterstäben 31 und Tragstegen 33 aufgebaut. Mittig im planen Bereich 36 ist ein Plattenelement 32 angeordnet, das als Strömungswiderstand und damit als Umlenkelement für die austretende Luft fungiert. Fig. 4 zeigt eine Rückansicht analog Fig. 3 mit geschlossenem Designdeckel.On the rear wall 18, a grid element 30 is arranged, which is connected to the rear wall via fastening portions 34 ( Fig. 3 ). In the open rear side region 21, through which the air sucked in by the fan 20 emerges, there is a barred area, which consists of a rising area 35 and a planar area 36. The grid element 30 is constructed here from annular bars 31 and carrier webs 33. Centrally in the planar region 36, a plate member 32 is arranged, which acts as a flow resistance and thus as a deflecting element for the exiting air. Fig. 4 shows a rear view analog Fig. 3 with closed design lid.

In Fig. 5 ist die Luftdurchtrittsvorrichtung 10 im eingebauten Zustand in eine Montagewand 50 dargestellt. Hierbei ist zwischen der Montagewand 50 und dem Grundgehäuse 11 eine Dichtung 17 angeordnet, die gewährleistet, dass im Übergangsbereich von Montagewand auf die Luftdurchtrittsvorrichtung 10 keine Luft eintreten kann.In Fig. 5 the air passage device 10 is shown in the installed state in a mounting wall 50. Here, a seal 17 is arranged between the mounting wall 50 and the base housing 11, which ensures that in the transition region from the mounting wall to the air passage device 10 no air can enter.

Eine vergrößerte Darstellung des Gitterelements 30, ist in Fig. 6 dargestellt. Im Bereich A bewegt sich die angesaugte Luft auf das Gitterelement 30 zu. Durch das Plattenelement 32 wird die Luft, die auf dieses trifft zur Seite umgelenkt. Dadurch wird der Luftstrom in eine axiale Komponente B und eine radiale Komponente C aufgeteilt. Die axiale Komponente B tritt durch den planen Abschnitt 36 des Gitterelements aus. Die radiale Komponente C tritt durch den ansteigenden Abschnitt 35 aus. Auf diese Weise wird die Luft innerhalb des zu belüftenden Gehäuses (nicht dargestellt) direkter und einfacher verteilt. Zusätzliche Leitelemente o. Ä. können vorgesehen sein. Gleichzeitig kann die Luft schneller durch das Gitterelement 30 hindurch treten, wodurch eine Steigerung des Luftdurchsatzes im Gebläse 20 gleichbedeutend mit einer Leistungssteigerung einhergeht. Durch die seitliche Abgabe der Luft wird auch ein Wideransaugen im Bereich des Plattenelements 32 grundsätzlich reduziert. Weiterhin verhindert das Vorsehen des Plattenelements 32 einen Rückstrom der Luft in die Luftdurchtrittsvorrichtung 10.An enlarged view of the grid element 30 is shown in FIG Fig. 6 shown. In area A, the sucked air moves toward the grid element 30. By the plate member 32, the air that meets this deflected to the side. As a result, the air flow is divided into an axial component B and a radial component C. The axial component B exits through the planar portion 36 of the grid element. The radial component C exits through the rising portion 35. In this way, the air within the housing to be ventilated (not shown) Distributed more direct and easier. Additional guide elements o. Ä. can be provided. At the same time, the air can pass through the grating element 30 faster, whereby an increase in the air flow in the fan 20 is accompanied by an increase in performance. By the lateral discharge of the air and a reverse suction in the region of the plate member 32 is basically reduced. Furthermore, the provision of the plate member 32 prevents a return flow of the air into the air passage device 10th

In Fig. 7 ist der Gebläseträger 12 geschnitten in einer ersten Ausführungsform dargestellt. Innerhalb des Gebläseträgers 12 ist ein Gebläse 20 angeordnet. Das Gebläse 20 besteht aus einem Rotor mit Flügeln 27 und einem Antrieb 24 in Form eines Motors. Der Flügel 27 weist eine Spitze 25 und eine Hinterkante 26 auf. Der Gebläseträger 12 besteht unter anderem aus der Seitenwand 19 und dem diffusorartig ausgeführten Abschnitt 22. Eine erste Ausführungsform der Anordnung des diffusorartig ausgeführten Abschnittes 22 ist in Fig. 7 gezeigt. Eine weitere Ausführungsform folgt in Fig. 9.In Fig. 7 the fan carrier 12 is shown cut in a first embodiment. Within the fan carrier 12, a fan 20 is arranged. The fan 20 consists of a rotor with vanes 27 and a drive 24 in the form of a motor. The wing 27 has a tip 25 and a trailing edge 26. The fan support 12 consists inter alia of the side wall 19 and the diffuser-like running portion 22. A first embodiment of the arrangement of the diffuser-like running portion 22 is in Fig. 7 shown. Another embodiment follows in Fig. 9 ,

Der diffusorartig ausgebildete Abschnitt 22 ist mit der Seitenwand 19 verbunden. Die Verbindung erfolgt allerdings im Endbereich des Gebläseträgers 12 im Rückseitenbereich 21 der Luftdurchtrittsvorrichtung 10. Der diffusorartig ausgeführte Abschnitt 22 ist gegenüber der Seitenwand 19 einfallend ausgeführt. Das Einfallen erfolgt gegenüber der Seitenwand um eine Außenwinkel β und einen Innenwinkel α. In Fig. 7 sind die Winkel zwischen der Verlängerung 28 der Seitenwand 19 und der Verlängerung 29 des diffusorartig ausgeführten Abschnittes 22 dargestellt. Der Ansatzpunkt 41 des diffusorartig ausgeführten Abschnittes 22 gegenüber dem Gebläse 20 ist zum Gebläseantrieb 24 hin versetzt. Der Versatz 39 ist in Fig. 7 zwischen der Verlängerung 28 der Seitenwand 19 und der aus dem Ansatzpunkt des diffusorartig ausgeführten Abschnittes 22 startenden Parallelen 38 zur Verlängerung der Seitenwand 28 dargestellt. Der Ansatzpunkt 41 des diffusorartig ausgeführte Abschnittes 22 befindet sich unmittelbar hinter der Hinterkante 26 der Flügel 27. Fig. 8 zeigt eine Seitenansicht zu Fig. 7 mit geschlossen dargestelltem Gebläseträger 12 und geöffnetem Designdeckel 15.The diffuser-shaped portion 22 is connected to the side wall 19. However, the connection is made in the end region of the fan carrier 12 in the rear side region 21 of the air passage device 10. The diffuser-like running portion 22 is executed with respect to the side wall 19 incident. The collapse occurs with respect to the side wall by an outer angle β and an inner angle α. In Fig. 7 the angles between the extension 28 of the side wall 19 and the extension 29 of the diffuser-like section 22 are shown. The starting point 41 of the diffuser-like section 22 with respect to the blower 20 is for Blower drive 24 offset. The offset 39 is in Fig. 7 between the extension 28 of the side wall 19 and the parallels 38 starting from the point of introduction of the diffuser-like section 22 for extending the side wall 28. The attachment point 41 of the diffuser-like section 22 is located immediately behind the trailing edge 26 of the wings 27. Fig. 8 shows one Side view too Fig. 7 with closed illustrated blower support 12 and opened design cover 15th

Eine weitere Ausführungsform des Gebläseträgers 12 hinsichtlich der Anordnung des diffusorartig ausgeführten Abschnittes 22 ist in Fig. 9 dargestellt. Der Ansatzpunkt 41 des diffusorartig ausgeführten Abschnittes 22 befindet sich in einem Übergang 23 direkt an der Seitenwand 19, wobei der Übergang weich ausgeführt ist, um unnötige Strömungswiderstände zu vermeiden. Der Ansatzpunkt 41 ist auf Höhe der Spitze 25 des Flügels 27 angeordnet.Another embodiment of the fan support 12 with respect to the arrangement of the diffuser-like section 22 is shown in FIG Fig. 9 shown. The starting point 41 of the diffuser-like section 22 is located in a transition 23 directly to the side wall 19, wherein the transition is made soft to avoid unnecessary flow resistance. The attachment point 41 is arranged at the level of the tip 25 of the wing 27.

Nach Fig. 10 ist das Gitterelement 30 so ausgebildet, dass es bei einem Luftrichtungswechsel das Gebläse 20 nicht berührt, obwohl das Gebläse mit seinen Flügeln 27 über den Gebläseträger 12 hinausragt. Dafür ist das Gitterelement 30 wiederum mittig mit einem planen Abschnitt 36 versehen. Von Außen zum planen Mittelabschnitt 36 ist ein abfallender Bereich 37 vorgesehen, der in den planen Bereich 36 übergeht. Seitlich sind Tragstege 33 angeordnet, auf den ringförmige Gitterstäbe 31 vorgesehen sind, um einen umfassenden Berührungsschutz für das Gebläse bereit zu stellen. To Fig. 10 the grille element 30 is designed so that it does not touch the blower 20 in the event of a change of air direction, although the blower projects with its wings 27 beyond the blower carrier 12. For this purpose, the grid element 30 is again provided centrally with a planar section 36. From the outside to the planar middle section 36, a sloping area 37 is provided, which merges into the planar area 36. Laterally support webs 33 are arranged, are provided on the annular grid bars 31 to provide a comprehensive contact protection for the fan.

Claims (12)

  1. An air passage device, configured as a filter fan for installation in a mounting opening (50) in a wall, wherein the air passage device (10) comprises base housing (11), a blower support (12), a blower (20), a covering device in the form of a design cover (15) with a fan grille (14), and a filter pad (13) disposed between the base housing (11) and the fan grille (14), wherein a grille element (30) is arranged over an air outlet (21) on the air outlet side of the air passage device (10), wherein said grille element comprises a rising section (35) and a level section (36), wherein the rising section (35) merges with the level section (36), and a solid section (32) is provided on the level section (36),
    characterised in that
    a section (22) constructed in the manner of a diffusor is arranged in the side area of the grille element (30), wherein the section (22) is a part of the side wall (19) of the blower support (12), and is offset with respect to the side wall by an interior angle (α), the value of which is between 180° and 270°.
  2. The air passage device according to claim 1,
    characterised in that
    the section (22) constructed in the manner of a diffusor is linear or rises degressively.
  3. The air passage device according to claim 1 or 2,
    characterised in that
    the contact point (41) of the section (22) constructed in the manner of a diffusor is located directly on the side wall (19).
  4. The air passage device according to either of claims 1 or 2,
    characterised in that
    the section (22) constructed in the manner of a diffusor is shifted (39) toward the middle of the blower with respect to the side wall (19).
  5. The air passage device according to any of the preceding claims,
    characterised in that
    the contact point (41) of the section constructed in the manner of a diffusor is level with the rear edge (26) or the tip (25) of a wing (27) of the blower (20).
  6. The air passage device according to any of the preceding claims,
    characterised in that
    the section (22) is constructed integrally with the side wall (19).
  7. The air passage device according to any of the preceding claims,
    characterised in that
    the grille element (30) is arranged so as to close off the air passage device (10).
  8. The air passage device according to any of the preceding claims,
    characterised in that
    the rising section (35) rises linearly.
  9. The air passage device according to any of the preceding claims,
    characterised in that
    the level section (36) and/or the solid section (32) is/are arranged centrally above the air outlet (21).
  10. The air passage device according to any of the preceding claims,
    characterised in that
    the solid section (32) is smaller than the level section (36).
  11. The air passage device according to any of the preceding claims,
    characterised in that
    the solid section (32) is a disk-shaped panel body that is preferably mounted on the level section (36) and/or is integral therewith.
  12. The air passage device according to any of the preceding claims,
    characterised in that
    the level section (36) is arranged parallel to the air outlet (21).
EP07014648.5A 2006-12-27 2007-07-26 Air passage device Not-in-force EP1939456B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202006019690U DE202006019690U1 (en) 2006-12-27 2006-12-27 Air passage device e.g. outlet filter, has grill unit with rising or sloping section that merges into planar section, and holohedral section provided on planar section, where holohedral section works as blocking device
DE200620019691 DE202006019691U1 (en) 2006-12-27 2006-12-27 Air passage device e.g. discharge filter for e.g. switching cabinet, has air inlet grill and grid unit which is arranged at air outlet side of device, and disk unit is provided in plane region of grid unit

Publications (3)

Publication Number Publication Date
EP1939456A2 EP1939456A2 (en) 2008-07-02
EP1939456A3 EP1939456A3 (en) 2009-04-29
EP1939456B1 true EP1939456B1 (en) 2014-03-12

Family

ID=39276755

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07014648.5A Not-in-force EP1939456B1 (en) 2006-12-27 2007-07-26 Air passage device

Country Status (3)

Country Link
US (1) US9677571B2 (en)
EP (1) EP1939456B1 (en)
RU (1) RU2353819C1 (en)

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US9568021B2 (en) 2012-05-16 2017-02-14 Dyson Technology Limited Fan
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Also Published As

Publication number Publication date
RU2353819C1 (en) 2009-04-27
EP1939456A2 (en) 2008-07-02
EP1939456A3 (en) 2009-04-29
US20080160898A1 (en) 2008-07-03
US9677571B2 (en) 2017-06-13

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