EP2292935A2 - Radial ventilator housing - Google Patents
Radial ventilator housing Download PDFInfo
- Publication number
- EP2292935A2 EP2292935A2 EP10169984A EP10169984A EP2292935A2 EP 2292935 A2 EP2292935 A2 EP 2292935A2 EP 10169984 A EP10169984 A EP 10169984A EP 10169984 A EP10169984 A EP 10169984A EP 2292935 A2 EP2292935 A2 EP 2292935A2
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- EP
- European Patent Office
- Prior art keywords
- radial fan
- fan housing
- wall
- housing device
- 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.)
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Classifications
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- 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
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- 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
- F04D29/441—Fluid-guiding means, e.g. diffusers especially adapted for elastic fluid pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2250/00—Geometry
- F05D2250/50—Inlet or outlet
- F05D2250/52—Outlet
Definitions
- the invention relates to a radial fan housing device for ventilation devices, in particular for motor vehicles, which have at least one boundary wall which limits at least in regions a radial fan receiving space in the radial direction.
- the invention relates to a Gebläsevorrchtung, in particular a blower device for a motor vehicle.
- the invention relates to an air conditioner, in particular a motor vehicle air conditioning.
- fans or blowers have been proven. This makes it possible to provide interiors with a sufficient supply of air, wherein the supplied air may optionally be preceded by heat exchanger (radiator and / or evaporator), filters and the like can be passed. Depending on the specific application, the fans or blowers must have different characteristics.
- a particularly low operating noise for example in the ventilation of a motor vehicle interior
- radial fans For ventilation of interiors, in particular of motor vehicle interiors, in particular radial fans are used. Basically, such radial fans satisfy the tasks assigned to them satisfactorily.
- a radial fan has been proposed that has a housing which increases in the first region at a smaller angle than that of a continuous Archimedean spiral and enlarges in a second region at a greater angle than this Archimedean spiral.
- the object of the invention is thus to propose a comparison with the prior art improved radial fan housing device.
- the object of the invention is to propose a comparison with the prior art improved blower device or air conditioning.
- a radial fan housing device for ventilation devices which at least one boundary wall, which defines at least partially a radial fan receiving space in the radial direction in such a way that the boundary wall is formed such that the radial fan receiving space in at least a first wall area in a non-linear manner expands and at least a second wall area extended in a linear manner. It is particularly advantageous if the radial fan housing device is used for ventilation devices of motor vehicles. Experiments have shown that such a combination of non-linear extension and subsequent linear expansion of the radial fan compartment (relative to a radial fan located in the radial fan compartment) can result in a surprisingly high level of noise reduction.
- a particularly significant noise reduction can result, especially in the low-frequency range, which is particularly advantageous because operating noise in the low-frequency range are often perceived as particularly disturbing and / or are relatively difficult to dampen.
- First experiments have shown that the proposed design of the radial fan housing device can result in a noise crescendo of typically in the range of 2 to 3.5 dB per third compared to a purely logarithmic spiral shape.
- a relative reference point for the "beginning" of the boundary wall in the circumferential direction an arbitrary reference point can be guaranteed.
- a reference point should be selected which has a characteristic property and / or allows a reference that is as clear as possible or easily referenceable.
- a typical example of this is, for example, a fan blade, which typically forms a transition between the radial fan compartment and an air discharge duct (usually tangential to radial).
- the proposed combination of non-linear extension and linear extension can not only provide particularly good acoustic performance , But in particular also have a very good efficiency.
- the non-linear region can absorb the increasing air flow along the circumferential direction of the radial fan wheel, without having to come to undesirable flow phenomena in the corresponding area.
- the radial fan housing device is designed in such a way that the radial fan mounting space expands logarithmically in at least one first wall area.
- Such a logarithmic expansion essentially corresponds to the increase in the air mass flow in the circumferential direction of the radial fan, so that in particular undesirable flow phenomena of the delivered air can be avoided. In this way, in particular a particularly good efficiency of the radial fan housing device can be achieved.
- At least one first wall area is arranged in front of at least one second wall area.
- Experiments have shown that in this case usually particularly good efficiencies, coupled with a particularly good acoustic behavior can result.
- At least one third wall region is provided, which forms a transition region to an air outlet channel.
- This wall portion may have a substantially arbitrary shape.
- the third wall region (the third wall regions) can be designed such that a funnel-like enlargement results.
- the one or more third wall regions have a length which is small in relation to the first wall region and / or second wall region.
- the increase in cross-sectional area is relatively greatly increased without favoring flow separation, for example, to avoid over-speed caused by too narrow cross sections, which can generate high-frequency noise and / or loss of efficiency at high mass flows can result.
- At least one third wall region has at least one rectilinear boundary wall at least in regions.
- the first wall region is formed in a region which starts at 0 °, 5 °, 10 °, 15 ° or 20 ° and / or at 85 °, 90 °, 95 °, 100 ° °, 105 °, 110 °, 115 °, 120 °, 125 °, 130 °, 135 °, 140 ° or 145 ° ends.
- the mentioned initial or final values have proved to be particularly advantageous.
- particularly advantageous results can be achieved with the above-mentioned initial and final values.
- the radial fan housing device has at least one housing tongue.
- This can in particular the transition region between a tangentially and / or radially arranged air discharge channel and the radial fan receiving area.
- the fan tongue can also serve as a reference point (starting point) for the formation of the boundary wall (and optionally further assemblies),
- blower device which has at least one radial fan housing device with the structure described above.
- the blower device then has the advantages and properties already described in an analogous manner.
- the blower device may be a blower device for a motor vehicle.
- an air conditioner which has at least one radial fan blower device with the structure described above and / or at least one blower device with the structure described above.
- Such an air conditioning system then has the properties and advantages described above in an analogous manner.
- the air conditioning system may be an automotive air conditioning system.
- a conceivable embodiment of a radial fan 1 is shown in a schematic plan view.
- the radial fan 1 has a radial fan housing 2, in whose interior 4 a radial fan 3 is arranged.
- the radial fan 3 and the boundary wall 5 are formed and arranged so that between the outside of the radial fan 3 and the boundary wall 5, a channel 6 is formed, starting from a so-called tongue 7, the cross section of the channel 6 increases steadily.
- the tongue 7 is rounded.
- the circle center 8 of the rounded surface of the tongue 7 is used.
- the reference line 9 extending in the radial direction is represented by the circle center 8 of the rounded tongue 7.
- the boundary wall 5 in Fig. 1 marked as a bold line.
- a first angular range 10 the boundary wall 5 of the radial fan housing 2 follows the shape of a conventional logarithmic spiral 13.
- Fig. 1 a linearly expanding coil 11 is shown.
- the (variable) slope of the boundary wall 5 is approximately smaller in the first quarter of the angular range 10 than the slope of the drawn for comparison linear spiral 11.
- the boundary wall 5 in this first angular range 10 is always within the drawn for comparison linear spiral 11 is located. In this way it is possible to save space. Nevertheless, the radial fan 1 in this configuration has a good efficiency and low noise.
- the boundary wall 5 now follows a spiral 11 with a linear gradient.
- the logarithmic spiral 13 which follows the boundary wall 5 in the first angular range 10, continued for comparison. How one Fig. 1 can thus take, the boundary wall 5 thus always runs in the second angle range 12 within the "alternative" logarithmic spiral 13, so that space can be saved here as well.
- experiments have shown that the linear continuation of the boundary wall 5 in the second angular range beyond usually leads in most of operating conditions to a noise reduction.
- a third angle range 14 follows.
- the third angle range 14 extends only over a relatively short length.
- the boundary wall 5 is formed in this area such that a transition area 15 from the interior 4 of the radial fan housing 2 to an outwardly leading Vietnameseab technologicalkanal 16 is formed.
- the boundary wall 5 is formed in a larger region of the third angle portion 14 as a rectilinear wall 17.
- Fig. 2 is the dimensioning of the boundary wall 5 of in Fig. 1 illustrated radial fan 1 shown in Cartesian coordinates.
- the abscissa 18 is in both Fig. 2a as well as in Fig. 2b the angle, starting from the boundary line 9 (zero point).
- the ordinate 19 in Fig. 2a shows the air flow cross section of the channel as a function of the respective angular position Fig. 2b along the ordinate 19 is the differential one Change in the air passage cross section through the channel 6 per unit angle shown.
- the second angular region 12 is adjoined by the third angular region 14 (transitional region 15), in which the boundary wall 5 is adapted to the following contour of an attachment component, such as, for example, the anti-theorbo housing of the air conditioning system.
- the boundary wall 5 is formed so that finally the cross section of the logarithmic spiral 13 is reached again.
- Fig. 3 Finally, the result of two measurements is shown, There is the Geschwindigkestsvertellung the air flowing through the channel 6 at a radial fan 20 with pure logarithmic spiral 13 with the air velocity distribution of in Fig. 1 illustrated radial fan 1 (having different angular ranges 10, 12, 14) shown. As you can see, the velocity of the air flowing through channel 6 is distributed much more homogeneously. In addition, the level of activity can be avoided. Both effects together result in a particularly effective noise reduction, in particular in the low-frequency frequency range, which is usually perceived as particularly disturbing, In addition, the efficiency of the radial fan 1 can be particularly high.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Motor Or Generator Frames (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
Description
Die Erfindung betrifft eine Radiallüftergehäusevorrichtung für Belüftungsvorrichtungen, insbesondere für von Kraftfahrzeugen, welche zumindest eine Begrenzungswand aufweisen, die zumindest bereichsweise einen Radiallüfteraufnahmeraum in radialer Richtung begrenzt. Zusätzlich betrifft die Erfindung eine Gebläsevorrchtung, insbesondere eine Gebläsevorrichtung für ein Kraftfahrzeug. Weiterhin betrifft die Erfindung eine Klimaanlage, insbesondere eine Kraftfahrzeugklimaaulage.The invention relates to a radial fan housing device for ventilation devices, in particular for motor vehicles, which have at least one boundary wall which limits at least in regions a radial fan receiving space in the radial direction. In addition, the invention relates to a Gebläsevorrchtung, in particular a blower device for a motor vehicle. Furthermore, the invention relates to an air conditioner, in particular a motor vehicle air conditioning.
In vielen Bereichen der Technik, wie insbesondere bei der Belüftung, Beheizung und Klimatisierung von Gebäuden und Fahrzeugen ist es erforderlich unter Verwendung technischer Hilfsmittel eine Luftströmung künstlich zu erzeugen. Für diesen Zweck haben sich sogenannte Lüfter bzw. Gebläse bewährt. Dadurch ist es möglich, Innenräume mit einer ausreichenden Luftzufuhr zu versehen, wobei die zugeführte Luft gegebenenfalls vorab noch durch Wärmetauscher (Heizkörper und/oder Verdampfer), Filter und dergleichen geleitet werden kann. Je nach konkretem Anwendungszweck müssen die Lüfter bzw. Gebläse unterschiedliche Charaktenstika aufweisen. Während es beispielsweise bei einem ersten Anwendungszweck (wie beispielsweise bei einem Kühler eines Kraftfahrzeugs) primär auf einen hohen Luftdurchsatz (und damit auf eine hohe Kühlleistung) ankommt, steht bei anderen Anwendungen beispielsweise ein besonders niedriges Betriebsgeräusch (beispielsweise bei der Belüftung eines Kraftfahrzeuginnenraums) im Vordergrund.In many fields of technology, in particular in the ventilation, heating and air conditioning of buildings and vehicles, it is necessary to artificially generate an air flow using technical aids. For this purpose, so-called fans or blowers have been proven. This makes it possible to provide interiors with a sufficient supply of air, wherein the supplied air may optionally be preceded by heat exchanger (radiator and / or evaporator), filters and the like can be passed. Depending on the specific application, the fans or blowers must have different characteristics. While For example, in a first application (such as in a radiator of a motor vehicle), primarily a high air flow rate (and thus a high cooling capacity) arrives, in other applications, for example, a particularly low operating noise (for example in the ventilation of a motor vehicle interior) is in the foreground.
Zur Belüftung von Innenräumen, insbesondere von Kraftfahrzeuginnenräumen, werden insbesondere Radiallüfter venwendet. Grundsätzlich erfüllen derartige Radiallüfter die ihnen übertragenen Aufgaben befriedigend.For ventilation of interiors, in particular of motor vehicle interiors, in particular radial fans are used. Basically, such radial fans satisfy the tasks assigned to them satisfactorily.
Nach wie vor ergeben sich jedoch Probleme, wenn die Radiallüfter hinsichtlich mehrerer Charakteristika möglichst gute Leistungswerte erzielen sollen. So ist es insbesondere bei im Stand der Technik bekannten Radiallüftergehäusen problematisch, einerseits einen besonders hohen maximal möglichen Luftmassenstrom zur Verfügung zu stellen, andererseits jedoch ein möglichst geringes Betriebsgeräusch zu realisieren. Insbesondere ist es problematisch, Radiallüfter derart auszubilden, dass über möglichst viele Betriebszustände hinweg ein möglichst geringes Betriebsgeräusch, insbesondere im niederfrequenten Bereich, entsteht.Still, however, problems arise when the radial fans should achieve the best possible performance in terms of several characteristics. Thus, it is particularly problematic in radial fans housing known in the prior art, on the one hand to provide a particularly high maximum possible air mass flow available, on the other hand, however, to realize the lowest possible operating noise. In particular, it is problematic to design radial fans in such a way that as many operating states as possible result in the lowest possible operating noise, in particular in the low-frequency range.
Um dieses Problem zu lösen wurden bereits unterschiedliche Lösungsansätze im Stand der Technik verfolgt. So wurde beispielsweise in
Derartige Gehäuse weisen jedoch nach wie vor Probleme, insbesondere hinsichtlich ihrer Geräuschentwicklung auf.However, such housing still have problems, especially with regard to their noise.
Die Aufgabe der Erfindung besteht somit darin, eine gegenüber dem Stand der Technik verbesserte Radiallüftergehäusevorrichtung vorzuschlagen. Darüber hinaus besteht die Aufgabe der Erfindung darin, eine gegenüber dem Stand der Technik verbesserte Gebläsevorrichtung bzw. Klimaanlage vorzuschlagen.The object of the invention is thus to propose a comparison with the prior art improved radial fan housing device. In addition, the object of the invention is to propose a comparison with the prior art improved blower device or air conditioning.
Es wird vorgeschlagen eine Radiallüftergehäusevorrichtung für Belüftungsvorrichtungen, welche zumindest eine Begrenzungswand, die zumindest bereichsweise einen Radiallüfteraufnahmeraum in radialer Richtung begrenzt derart auszubilden, dass die Begrenzungswand derart ausgebildet ist, dass sich der Radiallüfteraufnahmeraum in zumindest einem ersten Wandbereich in nicht-linearer Weise erweitert und in zumindest einem zweiten Wandbereich in linearer Weise erweitert. Besonders vorteilhaft ist es, wenn die Radiallüftergehäusevorrichtung für Belüftungsvorrichtungen von Kraftfahrzeugen verwendet wird. Versuche haben ergeben, dass eine derartige Kombination von nicht-linearer Erweiterung und anschießender linearer Erweiterung des Radiallüfteraufnahmeraums (relativ zu einem im Radiallüfteraufnahmeraum angeordneten Radiallüfterrad) eine verblüffend starke Geräuschminderung ergeben kann. Insbesondere kann sich eine besonders signifikante Geräuschminderung speziell im niederfrequenten Bereich ergeben, was von besonderem Vorteil ist, da Betriebsgeräusche im niederfrequenten Bereich oftmals als besonders störend empfunden werden und/oder relativ schwer zu dämpfen sind. Erste Versuche haben ergeben, dass sich durch die vorgeschlagene Bauform der Radiallüftergehäusevorrichtung eine Geräuschnunderung von typischerweise im Bereich von 2 bis 3,5 dB pro Terz im Vergleich zu einer rein logarithmischen Spiralform ergeben kann. Als relativer Bezugspunkt für den "Beginn" der Begrenzungswand in Umfangsrichtung gesehen kann ein an sich beliebiger Referenzpunkt gewähr worden. Bevorzugt sollte jedoch ein Referenzpunkt gewählt werden, der eine charakteristische Eigenschaft aufweist und/oder eine möglichst eindeutige bzw. gut referenzierbare Bezugnahme ermöglicht. Ein typisches Beispiel hierfür ist beispielsweise eine Gebläsezunge, die typischerweise einen Übergang zwischen dem Radiallüfteraufnahmeraum und einem Luftabführkanal (üblicherweise in tangentialer bis radialer Richtung verlaufend) bildet Die vorgeschlagene Kombination von nicht-linearer Erweiterung und linearer Erweiterung kann darüber hinaus nicht nur ein besonders gutes akustisches Verhalten, sondern insbesondere auch einen sehr guten Wirkungsgrad aufweisen. So kann beispielsweise der nicht-lineare Bereich die entlang der Umfangsrichtung des Radiallüfterrads zunehmende Luftströmung aufnehmen, ohne dass es zu unerwünschten Strömungsphänomenen im entsprechenden Bereich kommen muss. Mit Hilfe der linearen Erweiterung, welche typischerweise enger gewickelt ist, als es einer Fortsetzung der nicht-linearen Erweiterung entspräche, können üblicherweise spezielle instationäre Strömungsphänomene in der Spiraldurchströmung der geförderten Luft und eine entsprechende Anregung insbesondere niederfrequenter Schallanteile wirksam vermieden werden. Derartige Effekte können ansonsten insbesondere bei niedrigen Luftmassendurchsatzraten auftreten. Darüber hinaus ist es insbesondere mit Hilfe des sich linear erweiternden Bereichs üblicherweise möglich, die Außenkontur der Radiallüftergehäusevorrichtung so zu gestalten, dass ein geringerer Bauraum möglich ist.It is proposed a radial fan housing device for ventilation devices, which at least one boundary wall, which defines at least partially a radial fan receiving space in the radial direction in such a way that the boundary wall is formed such that the radial fan receiving space in at least a first wall area in a non-linear manner expands and at least a second wall area extended in a linear manner. It is particularly advantageous if the radial fan housing device is used for ventilation devices of motor vehicles. Experiments have shown that such a combination of non-linear extension and subsequent linear expansion of the radial fan compartment (relative to a radial fan located in the radial fan compartment) can result in a surprisingly high level of noise reduction. In particular, a particularly significant noise reduction can result, especially in the low-frequency range, which is particularly advantageous because operating noise in the low-frequency range are often perceived as particularly disturbing and / or are relatively difficult to dampen. First experiments have shown that the proposed design of the radial fan housing device can result in a noise crescendo of typically in the range of 2 to 3.5 dB per third compared to a purely logarithmic spiral shape. As a relative reference point for the "beginning" of the boundary wall in the circumferential direction, an arbitrary reference point can be guaranteed. Preferably, however, a reference point should be selected which has a characteristic property and / or allows a reference that is as clear as possible or easily referenceable. A typical example of this is, for example, a fan blade, which typically forms a transition between the radial fan compartment and an air discharge duct (usually tangential to radial). The proposed combination of non-linear extension and linear extension can not only provide particularly good acoustic performance , But in particular also have a very good efficiency. Thus, for example, the non-linear region can absorb the increasing air flow along the circumferential direction of the radial fan wheel, without having to come to undesirable flow phenomena in the corresponding area. With the help of the linear extension, which is typically wound more closely than would correspond to a continuation of the non-linear extension, it is usually possible to effectively avoid special unsteady flow phenomena in the spiral flow of the conveyed air and a corresponding excitation especially of low-frequency sound components. Such effects may otherwise occur especially at low air mass flow rates. In addition, it is usually possible, in particular with the aid of the linearly widening region, to design the outer contour of the radial fan housing device in such a way that a smaller installation space is possible.
Vorteilhaft kann es sein, wenn die Radiallüftergehäusevorrichtung derart ausgebildet ist, dass sich in zumindest einem ersten Wandbereich der Radiallüfteraufnahmeraum logarithmisch erweitert. Eine derartige logarithmische Erweiterung entspricht im Wesentlichen der Zunahme des Luftmassenstroms in Umfangsrichtung des Radiallüfterrads, so dass insbesondere unerwünschte Strömungsphänomene der geförderten Luft vermieden werden können. Auf diese Weise ist insbesondere ein besonders guter Wirkungsgrad der Radiallüftergehäusevorrichtung erzielbar.It can be advantageous if the radial fan housing device is designed in such a way that the radial fan mounting space expands logarithmically in at least one first wall area. Such a logarithmic expansion essentially corresponds to the increase in the air mass flow in the circumferential direction of the radial fan, so that in particular undesirable flow phenomena of the delivered air can be avoided. In this way, in particular a particularly good efficiency of the radial fan housing device can be achieved.
Besonders sinnvoll kann es sein, wenn zumindest ein erster Wandbereich vor zumindest einem zweiten Wandbereich angeordnet ist. Versuche haben ergeiben, dass sich in diesem Fall üblicherweise besonders gute Wirkungsgrade, gepaart mit einem besonders guten akustischen Verhalten ergeben können.It can be particularly useful if at least one first wall area is arranged in front of at least one second wall area. Experiments have shown that in this case usually particularly good efficiencies, coupled with a particularly good acoustic behavior can result.
Weiterhin kann es vorteilhaft sein, wenn lediglich ein erster Wandbereich und/oder ein zweiter Wandbereich vorhanden ist. So haben Versuche ergeben, dass sich oftmals der überwiegende Teil der Wirkungsgraderhöhung und/oder der akustischen Verbesserung mit lediglich einer Abfolge von nicht-linearer und linearer Erweiterung erzielen lässt Beschränkt man sich hier auf eine einzelne derartige Abfolge, so kann insbesondere die Herstellung der Radiallüftergehäusevorrichtung vereinfacht werden.Furthermore, it may be advantageous if only a first wall area and / or a second wall area is present. Thus, tests have shown that often the majority of the increase in efficiency and / or the acoustic improvement can be achieved with only one sequence of non-linear and linear expansion. If one limits oneself to a single such sequence, in particular the manufacture of the radial fan housing device can be simplified become.
Weiterhin kann es sich als vorteilhaft erweisen, wenn zumindest ein dritter Wandbereich vorgesehen ist, welcher einen Übergangsbereich zu einem Luftaustrittskanal hin bildet. Dieser Wandbereich kann eine im Wesentlichen beliebige Formgebung aufweisen. Insbesondere kann der dritte Wandbereich (die dritten Wandbereiche) derart ausgeführt sein, dass sich eine trichterartige Erweiterung ergibt. Üblicherweise ist es ausreichend, wenn der oder die dritten Wandbereiche eine im Verhältnis zum ersten Wandbereich und/oder zweiten Wandbereich geringe Länge aufweisen. In aller Regel erweist es sich dabei als vorteilhaft, wenn im Bereich des dritten Wandbereichs der Querschnittsflächenzuwachs relativ stark gesteigert wird ohne dabei Strömungsablösungen zu begünstigen, beispielsweise um zu vermeiden, dass durch zu enge Querschnitte Übergeschwindigkeiten entstehen, die hochfrequentes Rauschen erzeugen können und/oder einen Wirkungsgradverlust bei hohen Massenströmen zur Folge haben können.Furthermore, it may prove advantageous if at least one third wall region is provided, which forms a transition region to an air outlet channel. This wall portion may have a substantially arbitrary shape. In particular, the third wall region (the third wall regions) can be designed such that a funnel-like enlargement results. Usually, it is sufficient if the one or more third wall regions have a length which is small in relation to the first wall region and / or second wall region. As a rule, proves It is advantageous if in the region of the third wall region, the increase in cross-sectional area is relatively greatly increased without favoring flow separation, for example, to avoid over-speed caused by too narrow cross sections, which can generate high-frequency noise and / or loss of efficiency at high mass flows can result.
Als besonders vorteilhaft hat es sich in diesem Zusammenhang erwiesen wenn zumindest ein dritter Wandbereich zumindest bereichsweise zumindest eine geradlinige Begrenzungswand aufweist. Auch hier haben Versuche ergeben, dass sich durch eine derartige Ausbildung üblicherweise besonders gute Wirkungsgrade und/oder ein besonders gutes akustisches Verhalten der Radiallüftergehäusevorrichtung ergeben können.In this context, it has proved to be particularly advantageous if at least one third wall region has at least one rectilinear boundary wall at least in regions. Again, experiments have shown that by such training usually particularly good efficiencies and / or a particularly good acoustic behavior of the radial fan housing device can result.
Darüber hinaus hat es sich als vorteilhaft erwiesen, wenn der erste Wandbereich in einem Bereich ausgebildet ist, der bei 0°, 5°, 10°, 15° oder 20° beginnt und/oder bei 85°, 90°, 95°, 100°, 105°, 110°, 115°, 120°, 125°, 130°, 135°, 140° oder 145° endet. Die genannten Anfangs- bzw. Endwerte haben sich als besonders vorteilhaft erwiesen.Moreover, it has proved to be advantageous if the first wall region is formed in a region which starts at 0 °, 5 °, 10 °, 15 ° or 20 ° and / or at 85 °, 90 °, 95 °, 100 ° °, 105 °, 110 °, 115 °, 120 °, 125 °, 130 °, 135 °, 140 ° or 145 ° ends. The mentioned initial or final values have proved to be particularly advantageous.
Eine weitere vorteilhafte Bauform ergibt sich, wenn der zweite Wandbereich in einem Bereich ausgebildet ist, der bei 85°, 90°, 95°, 100°, 105°, 110°, 115°, 120°, 125°, 130°, 135°, 140° oder 145° beginnt und/oder bei 270°, 275°, 280°, 285°, 290°, 295°, 300°, 305°, 310°, 315°, 320°, 325° oder 330° endet. Auch hier hat sich gezeigt, dass mit den genannten Anfangs- bzw. Endwerten besonders vorteilhafte Ergebnisse erzielt werden können.A further advantageous design results when the second wall region is formed in a region which is at 85 °, 90 °, 95 °, 100 °, 105 °, 110 °, 115 °, 120 °, 125 °, 130 °, 135 °, 140 ° or 145 ° and / or at 270 °, 275 °, 280 °, 285 °, 290 °, 295 °, 300 °, 305 °, 310 °, 315 °, 320 °, 325 ° or 330 ° ends. Again, it has been shown that particularly advantageous results can be achieved with the above-mentioned initial and final values.
Vorteilhafte Ausführungen können sich darüber hinaus insbesondere dann ergeben, wenn die Radiallüftergehäusevorrichtung zumindest eine Gehäusezunge aufweist. Diese kann insbesondere den Übergangsbereich zwischen einem tangential und/oder radial angeordnetem Luftabfuhrkanal und dem Radiallüfteraufnahmebereich bilden. Insbesondere kann die Gebläsezunge auch als Referenzpunkt (Anfangspunkt) für die Ausbildung der Begrenzungswand (und gegebenenfalls weitere Baugruppen) dienen,In addition, advantageous embodiments can result, in particular, when the radial fan housing device has at least one housing tongue. This can in particular the transition region between a tangentially and / or radially arranged air discharge channel and the radial fan receiving area. In particular, the fan tongue can also serve as a reference point (starting point) for the formation of the boundary wall (and optionally further assemblies),
Weiterhin wird eine Gebläsevorrichtung vorgeschlagen, welche zumindest eine Radiallüftergehäusevorrichtung mit dem vorab beschriebenen Aufbau aufweist. Die Gebläsevorrichtung weist dann die bereits beschriebenen Vorteile und Eigenschaften in analoger Weise auf. Insbesondere kann es sich bei der Gebläsevorrichtung um eine Gebläsevorrichtung für ein Kraftfahrzeug handeln.Furthermore, a blower device is proposed, which has at least one radial fan housing device with the structure described above. The blower device then has the advantages and properties already described in an analogous manner. In particular, the blower device may be a blower device for a motor vehicle.
Weiterhin wird eine Klimaanlage vorgeschlagen, welche zumindest eine Radiallüftergebläsevorrichtung mit dem vorab beschriebenen Aufbau und/oder zumindest eine Gebläsevorrichtung mit dem vorab beschriebenen Aufbau aufweist. Eine derart ausgebildete Klimaanlage weist dann die vorab beschriebenen Eigenschaften und Vorteile in analoger Weise auf. Insbesondere kann es sich bei der Klimaanlage um eine Kraftfahrzeugklimaanlage handeln.Furthermore, an air conditioner is proposed which has at least one radial fan blower device with the structure described above and / or at least one blower device with the structure described above. Such an air conditioning system then has the properties and advantages described above in an analogous manner. In particular, the air conditioning system may be an automotive air conditioning system.
Im Folgenden wird die Erfindung anhand vorteilhafter Ausführungsbeispiele und unter Bezugnahme auf die beigefügte Zeichnung näher erläutert Es zeigt:
- Fig. 1:
- ein Ausführungsbeispiel für einen Radiallüfter in Draufsicht von oben;
- Fig. 2:
- die Größendimensionierung der in
Fig. 1 dargestellten Gebläsegehäusekontur in kartesischen Koordinaten; - Fig. 3:
- das Strömungsverhalten des vorgeschlagenen Radialgebläses im Vergleich mit dem Strömungsverhalten eines Radialgeblä- ses nach dem Stand der Technik.
- Fig. 1:
- an embodiment of a radial fan in plan view from above;
- Fig. 2:
- the size of the in
Fig. 1 illustrated blower housing contour in Cartesian coordinates; - 3:
- the flow behavior of the proposed radial fan in comparison with the flow behavior of a radial fan according to the prior art.
In
Als Referenzpunkt für allfällige Winkelangaben wird daher der Kreismittelpunkt 8 der abgerundeten Oberfläche der Zunge 7 verwendet. Zur Verdeutlichung ist die in radialer Richtung verlaufende Bezugslinie 9 durch den Kreismittelpunkt 8 der abgerundeten Zunge 7 dargestellt. Darüber hinaus ist die Begrenzungswand 5 in
In einem ersten Winkelbereich 10 folgt die Begrenzungswand 5 des Radiallüftergehäuses 2 der Form einer herkömmlichen logarithmischen Spirale 13. Zum Vergleich ist in
Dem ersten Winkelbereich 10 schließt sich der zweite Winkelbereich 12 an, der sich im vorliegend dargestellten Ausführungsbeispiel von β = 115° bis γ = 300° erstreckt. In diesem zweiten Winkelbereich 12 folgt nunmehr die Begrenzungswand 5 einer Spirale 11 mit linearer Steigung. Zum Vergleich ist in
Nach dem Winkel γ von vorliegend γ = 300° schließt sich ein dritter Winkelbereich 14 an. Der dritte Winkelbereich 14 erstreckt sich jedoch nur über eine relativ kurze Länge. Im Wesentlichen ist die Begrenzungswand 5 in diesem Bereich derart ausgebildet, dass sich ein Übergangsbereich 15 vom Innenraum 4 des Radiallüftergehäuses 2 zu einem nach außen führenden Luftabführkanal 16 bildet. Im vorliegend dargestellten Ausführungsbeispiel ist die Begrenzungswand 5 in einem größeren Bereich des dritten Winkelbereichs 14 als geradlinige Wand 17 ausgebildet.After the angle γ of the present γ = 300 °, a
In
Sowohl in
Wie man den Figuren entnehmen kann, folgt die Begrenzungswand 5 des Radiallüftergehäuses 2 im ersten Winkelbereich 10 von α = 0° bis β = 115° einer logarithmischen Spirale 13. Beginnend mit dem zweiten Winkelbereich 12 (zwischen β = 115° und γ = 300°) folgt die Begrenzungswand 5 des Radiallüftergehäuses 2 dagegen einer linearen Spirale 11.As can be seen from the figures, the boundary wall 5 of the
Dem zweiten Winkelbereich 12 scließt sich der dritte Winkelbereich 14 (Übergangsbereich 15) an, in dem die Begrenzungswand 5 an den folgenden Konturverlauf einer Anschiusskomponente, wie beispielsweise dem Verdarnpfergehäuse der Klimaanlage angepasst wird. Im vorliegend dargestellten Ausführungsbeispiel ist die Begrenzungswand 5 so ausgebildet, dass schlussendlich wieder der Querschnitt der logarithmischen Spirale 13 erreicht wird.The second
In
BezugszeiehenlisteBezugszeiehenliste
- 11
- Radiallüfterradial fans
- 22
- RadiallüftergehäuseRadial fan housing
- 33
- Radiallüfterradradial fan
- 44
- Innenrauminner space
- 55
- Begrenzungswandboundary wall
- 66
- Kanalchannel
- 77
- Zungetongue
- 88th
- Kreismittelpunkt von 7Circle center of 7
- 99
- Bezugsliniereference line
- 1010
- erster Winkelbereichfirst angular range
- 1111
- lineare Spiralelinear spiral
- 1212
- zweiter Winkelbereichsecond angular range
- 1313
- logarithmische Spiralelogarithmic spiral
- 1414
- dritter Winkelbereichthird angle range
- 1515
- ObergangsbereichTransition area
- 1616
- Luftabführkanalair discharge
- 1717
- gerade Wandstraight wall
- 1818
- Abszisseabscissa
- 1919
- Ordinateordinate
- 2020
- Radiallüfter (SDT)Radial fan (SDT)
Claims (11)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102009033776A DE102009033776A1 (en) | 2009-07-17 | 2009-07-17 | Radial fan housing |
Publications (3)
Publication Number | Publication Date |
---|---|
EP2292935A2 true EP2292935A2 (en) | 2011-03-09 |
EP2292935A3 EP2292935A3 (en) | 2013-01-30 |
EP2292935B1 EP2292935B1 (en) | 2016-11-02 |
Family
ID=42989227
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10169984.1A Not-in-force EP2292935B1 (en) | 2009-07-17 | 2010-07-19 | Radial ventilator housing |
Country Status (2)
Country | Link |
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EP (1) | EP2292935B1 (en) |
DE (1) | DE102009033776A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103994102A (en) * | 2014-05-07 | 2014-08-20 | 江苏大学 | Spiral pumping chamber design method for low-specific-speed centrifugal pump |
DE102014221955A1 (en) | 2014-10-28 | 2016-05-12 | Mahle International Gmbh | air conditioning |
CN106989063A (en) * | 2017-05-10 | 2017-07-28 | 江苏双达泵业股份有限公司 | A kind of centrifugal pump similar spiral type pumping chamber design method |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5517914B2 (en) * | 2010-12-27 | 2014-06-11 | 三菱重工業株式会社 | Centrifugal compressor scroll structure |
EP2811170A1 (en) | 2013-06-04 | 2014-12-10 | Behr GmbH & Co. KG | Radial fan |
DE102017122987A1 (en) * | 2017-10-04 | 2019-04-04 | Ebm-Papst Mulfingen Gmbh & Co. Kg | Half volute |
JP6876146B2 (en) * | 2017-11-20 | 2021-05-26 | 三菱重工エンジン&ターボチャージャ株式会社 | Centrifugal compressor and turbocharger equipped with this centrifugal compressor |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1778015A (en) * | 1929-01-24 | 1930-10-14 | Hoover Co | Fan casing |
US3846040A (en) * | 1972-06-16 | 1974-11-05 | D Dennis | Blower housing |
US4735551A (en) * | 1983-03-19 | 1988-04-05 | Vaillant Gmbh U. Co. | Radial blower |
WO1990009524A1 (en) * | 1989-02-14 | 1990-08-23 | Airflow Research & Manufacturing Corporation | Centrifugal fan and diffuser with accumulating volute |
US6273679B1 (en) * | 1999-07-28 | 2001-08-14 | Samsung Electronics Co., Ltd. | Centrifugal blower |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3238913C2 (en) | 1982-10-21 | 1985-10-03 | Werner Dr. 8972 Sonthofen Röhrs | Centrifugal fan housing |
DE4143663B4 (en) * | 1991-12-13 | 2007-03-29 | Papst Licensing Gmbh & Co. Kg | centrifugal blower |
CA2314532C (en) | 1999-08-10 | 2009-10-27 | Lg Electronics Inc. | Blower |
-
2009
- 2009-07-17 DE DE102009033776A patent/DE102009033776A1/en not_active Ceased
-
2010
- 2010-07-19 EP EP10169984.1A patent/EP2292935B1/en not_active Not-in-force
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1778015A (en) * | 1929-01-24 | 1930-10-14 | Hoover Co | Fan casing |
US3846040A (en) * | 1972-06-16 | 1974-11-05 | D Dennis | Blower housing |
US4735551A (en) * | 1983-03-19 | 1988-04-05 | Vaillant Gmbh U. Co. | Radial blower |
WO1990009524A1 (en) * | 1989-02-14 | 1990-08-23 | Airflow Research & Manufacturing Corporation | Centrifugal fan and diffuser with accumulating volute |
US6273679B1 (en) * | 1999-07-28 | 2001-08-14 | Samsung Electronics Co., Ltd. | Centrifugal blower |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103994102A (en) * | 2014-05-07 | 2014-08-20 | 江苏大学 | Spiral pumping chamber design method for low-specific-speed centrifugal pump |
DE102014221955A1 (en) | 2014-10-28 | 2016-05-12 | Mahle International Gmbh | air conditioning |
DE102014221955A8 (en) | 2014-10-28 | 2016-08-04 | Mahle International Gmbh | air conditioning |
DE102014221955B4 (en) * | 2014-10-28 | 2017-10-19 | Mahle International Gmbh | air conditioning |
CN106989063A (en) * | 2017-05-10 | 2017-07-28 | 江苏双达泵业股份有限公司 | A kind of centrifugal pump similar spiral type pumping chamber design method |
Also Published As
Publication number | Publication date |
---|---|
DE102009033776A1 (en) | 2011-01-20 |
EP2292935B1 (en) | 2016-11-02 |
EP2292935A3 (en) | 2013-01-30 |
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