EP1538340A2 - Kompakter Diagonallüfter - Google Patents
Kompakter Diagonallüfter Download PDFInfo
- Publication number
- EP1538340A2 EP1538340A2 EP04027609A EP04027609A EP1538340A2 EP 1538340 A2 EP1538340 A2 EP 1538340A2 EP 04027609 A EP04027609 A EP 04027609A EP 04027609 A EP04027609 A EP 04027609A EP 1538340 A2 EP1538340 A2 EP 1538340A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- impeller
- air
- diagonal fan
- hub
- fan according
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
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
- F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
- F04D17/06—Helico-centrifugal pumps
-
- 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
- F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
- F04D25/0606—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump
Definitions
- the invention relates to a compact diagonal fan, according to the preamble of claim 1
- Diagonal fans differ only slightly from the first known axial fans and are therefore often called "semi-axial" Designates fans.
- a diagonal fan according to Figure 3 essentially of a housing 100, a therein mounted electric motor 101, the hub 102 together with a plurality formed of thereon blades 103 103, the impeller 104 of the fan.
- the impeller 104 is rotatably mounted about an axis of rotation 105 and is driven by the electric motor 101.
- the electric motor 101 is by means of in substantially radially outwardly extending webs 106 in the housing 100th held.
- the motor 101 For diagonal and axial compact fans are the motor 101, the Commutation electronics (if present), the impeller 104 and the Housing 100 integrated in one unit.
- the motor is an external rotor motor, where the rotor rotates around the inside stator. This results itself a very compact construction, because the impeller is directly on the outside lying rotor can be attached.
- the engine itself is usually one Shadow pole motor or a capacitor motor for the AC mains (the latter only for higher powers), or a commutator motor or a brushless DC motor for DC supply.
- a diagonal fan In a diagonal fan, the suction of the air takes place axially, the Outflow, however, diagonal.
- a conical shape of the hub and a certain air flow in the outer housing can be an outflow angle between 0 and 90 degrees with respect to the axis of rotation can be achieved.
- the hub is characterized by the increasing diameter in the flow direction the hub increased.
- the diagonal fan at the same External dimensions and same speed larger pressure increases generate as the axial fan.
- diagonal fans are for Users are very interesting and especially in the Telecommunications electronics used, since here the fluidic Resistance of the control cabinets with increasing integration ever larger becomes what powerful fan demands.
- the diagonal design is included Small fans so far encountered only relatively rare, which is probably mainly on the complicated geometry of the impeller is due.
- the stator of the external rotor motor is usually fixed with webs on the fan housing.
- it is known to place these webs either at the air inlet opening or at the air outlet opening. This has little effect on the impeller itself or the operating noise of the fan, since the cross-section of the flow channel - in contrast to a diagonal fan, does not change.
- the axial compact fans are almost always designed to blow over webs.
- Conventional diagonal fans are also constructed blowing on bridges, that is, the webs are located on the air outlet opening.
- the object of the invention is to provide a diagonal fan, the compared to a conventional diagonal fan with the same air flow and pressure increase has a significantly lower operating noise.
- the invention is characterized in that the webs for fastening the Motors on the housing in the area of the air inlet opening of the flow channel are arranged. This can be maintained at the same outer dimensions of the Fans are used a larger fan. A bigger fan has a larger air flow, so that the fan according to the invention can be operated at a relatively lower speed to to achieve the same air flow rate as a conventional fan. One However, operation at a lower speed also means a reduction the operating noise, which was the actual purpose of the invention.
- the blades of the impeller close to the outlet of the Flow channel and thus in the region of the largest diameter of the hub attach so that the diameter of the fan wheel in total increased.
- the cross-section of the flow channel extends radially outward at an acute angle with respect to the axis of rotation of the impeller, so that the air flowing through the fan is expelled diagonally to the axis of rotation.
- the profiled surface of the air duct shell at the air inlet opening radially rounded to the outside.
- the electric motor is a External rotor motor whose fixed part through the webs on the housing is held and whose rotor forms the hub with the impeller.
- the fan shown in Figures 1 and 2 consists essentially of a housing 10, a mounted therein electric motor 11, the hub 12th together with a plurality of blades 13 formed thereon Impeller 14 of the fan forms.
- the impeller 14 is about an axis of rotation 15th rotatably supported and is driven by the electric motor 11. Of the Electric motor 11 is running by means of substantially radially outward Webs 16 held in the housing 10.
- the housing 10 includes a to the diameter of the impeller 14th adapted air guide casing 17.
- the hub limited together with the the impeller surrounding air duct 17 a substantially annular flow channel 18, an air inlet opening 19 and a Air outlet opening 20 has.
- the air is at the air inlet opening 19th sucked, passes through the fan in the flow direction 22 and is at the Air outlet 20 ejected again.
- the hub 12 is formed substantially as a truncated cone, which is located in Direction to the air outlet opening 20 widened.
- the Air ducting 17 formed substantially profiled, wherein whose diameter widens toward the air outlet opening 20.
- the Inlet 19 of the air duct 17 is under limitation of Air inlet opening of the flow channel 18 via an inlet radius 21 after rounded on the outside to prevent the formation of inlet-side turbulence avoid.
- the surface of the air duct jacket 17 in the direction the air outlet opening 20 a smaller angle with respect to the Rotation axis 15 on than the surface of the hub 12, so that the Diameter of the annular flow channel 18 in particular in Area of the impeller 14 is reduced in the direction of the air outlet opening 20.
- Figure 3 shows a conventional diagonal compact fan, the webs 106 are arranged on the air outlet side.
- the stationary part of the motor 101 held by the webs 106 is thus arranged on the air outlet side, while the fan wheel 104 with the hub 102 is displaced in the direction of the air inlet opening.
- the blades 103 are fixed to the side of the smaller diameter hub 102.
- Figure 1 shows the diagonal fan according to the invention, in which the webs 16 at the air inlet side 19 are arranged.
- a larger diameter impeller 14 on the Air outlet side 20 results, since now the blades 13 of the impeller 14 at the Side of the hub 12 are attached, which has the larger diameter.
- the diameter of the impeller 14 according to Figure 1 on the Air outlet side about 10% larger than the diameter of the impeller 104th according to FIG. 3.
- a reduction of 3.5 to 3.9 dB corresponds to more than a halving of the original noise level. Therefore it is very favorable, if with the Diagonal fan according to the invention the same air performance with smaller Speed can be achieved.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
Herkömmliche Diagonallüfter werden ebenfalls über Stege blasend konstruiert, das heißt die Stege befinden sich auf der Luftaustrittöffnung.
Eine im Vergleich zu Axiallüftern verbesserte Erhöhung des Druckes wird unter anderem dadurch erreicht, dass sich der Querschnitt des Strömungskanals in Richtung zur Luftaustrittsöffnung verringert.
- Figur 1
- zeigt einen Axialschnitt eines Diagonallüfters gemäß der Erfindung;
- Figur 2
- zeigt eine perspektivische Darstellung des Lüfters gemäß Figur 1;
- Figur 3
- zeigt einen Axialschnitt eines Diagonallüfters nach dem Stand der Technik.
Figur 3 zeigt einen herkömmlichen diagonalen Kompaktlüfter, dessen Stege 106 an der Luftaustrittsseite angeordnet sind. Der von den Stegen 106 gehaltene feststehende Teil des Motors 101 ist somit an der Luftaustrittsseite angeordnet, während das Lüfterrad 104 mit Nabe 102 in Richtung der Lufteintrittsöffnung verlagert ist. Die Schaufeln 103 sind an der Seite der Nabe 102 mit dem kleineren Durchmesser befestigt.
1,105 = 1,61
Lw = Geräuschpegel in dB
A = 50 bis 55 (empirisch ermittelte Werte)
N1 = Nenndrehzahl
N2 = reduzierte Drehzahl
Lw = 50 (bzw. 55) log (1,0/0,85) = 3,5 dB ( bzw. 3.9 dB)
- 10
- Gehäuse
- 11
- Elektromotor
- 12
- Nabe
- 13
- Schaufeln
- 14
- Laufrad
- 15
- Rotationsachse
- 16
- Stege
- 17
- Luftführungsmantel
- 18
- Strömungskanal
- 19
- Lufteintrittsöffnung
- 20
- Luftaustrittsöffnung
- 21
- Einlaufradius
- 22
- Strömungsrichtung
- 100
- Gehäuse
- 101
- Elektromotor
- 102
- Nabe
- 103
- Schaufeln
- 104
- Laufrad
- 105
- Rotationsachse
- 106
- Stege
Claims (8)
- Diagonallüfter mit einem Gehäuse (10), einem durch einen Elektromotor (11) angetriebenen Laufrad (14), dessen Nabe (12) zusammen mit einem das Laufrad umgebenden Luftführungsmantel (17) einen im wesentlichen ringförmigen Strömungskanal (18) mit einer Lufteintrittöffnung (19) und einer Luftaustrittsöffnung (20) definiert, wobei die Nabe (12) als ein sich zur Luftaustrittöffnung (20) hin verbreiternder Kegelstumpf ausgebildet ist, und der Luftführungsmantel (17) im wesentlichen profiliert ausgebildet ist, wobei der Elektromotor (11) mittels im wesentlichen radial nach außen verlaufenden Stegen (16) im Gehäuse (10) gehalten ist,
dadurch gekennzeichnet, dass die Stege (16) im Bereich der Lufteintrittsöffnung (19) des Strömungskanals (18) angeordnet sind. - Diagonallüfter nach Anspruch 1, dadurch gekennzeichnet, dass die Schaufeln (13) des Laufrades (14) im Bereich des größten Durchmessers der Nabe (12) befestigt sind.
- Diagonallüfter nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Laufrad (14) im Bereich der Luftaustrittsöffnung (20) des Strömungskanals (18) angeordnet ist.
- Diagonallüfter nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Querschnitt des Strömungskanals (18) in Bezug auf die Rotationsachse (15) des Laufrades (14) in einem spitzen Winkel radial nach außen verläuft.
- Diagonallüfter nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass sich der Querschnitt des Strömungskanals (18) in Richtung zur Luftaustrittsöffnung (20) verringert.
- Diagonallüfter nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass sich der Durchmesser des Luftführungsmantels (17) zur Luftaustrittöffnung (20) hin aufweitet.
- Diagonallüfter nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die profilierte Fläche des Luftführungsmantels (17) an der Lufteintrittsöffnung (19) einen radial nach außen abgerundeten Einlaufradius (21) aufweist.
- Diagonallüfter nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Elektromotor (11) ein Außenläufermotor ist, dessen feststehender Teil am Gehäuse (10) gehalten ist und dessen Rotor die Nabe (12) mit dem Laufrad (14) ausbildet.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10357289 | 2003-12-05 | ||
DE10357289A DE10357289A1 (de) | 2003-12-05 | 2003-12-05 | Kompakter Diagonallüfter |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1538340A2 true EP1538340A2 (de) | 2005-06-08 |
EP1538340A3 EP1538340A3 (de) | 2005-07-13 |
Family
ID=34442498
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04027609A Withdrawn EP1538340A3 (de) | 2003-12-05 | 2004-11-20 | Kompakter Diagonallüfter |
Country Status (4)
Country | Link |
---|---|
US (1) | US20050123399A1 (de) |
EP (1) | EP1538340A3 (de) |
JP (1) | JP2005171987A (de) |
DE (1) | DE10357289A1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101319684B (zh) * | 2007-06-05 | 2011-09-14 | 台达电子工业股份有限公司 | 风扇扇框及其制作方法 |
CN105351225A (zh) * | 2015-11-19 | 2016-02-24 | 华蓥市双河第二初级中学 | 一种低噪音的教室用风扇 |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009108792A (ja) * | 2007-10-31 | 2009-05-21 | Nippon Densan Corp | ファン装置 |
CN102374200A (zh) * | 2010-08-17 | 2012-03-14 | 建准电机工业股份有限公司 | 散热风扇 |
CN102478027B (zh) * | 2010-11-22 | 2015-06-03 | 台达电子工业股份有限公司 | 风扇组件及其流道装置 |
CN105003448A (zh) * | 2014-04-14 | 2015-10-28 | 詹臻明 | 压缩风扇 |
US11377976B2 (en) * | 2018-12-19 | 2022-07-05 | Unison Industries, Llc | Surface cooler and method of forming |
CN109882426B (zh) * | 2019-03-22 | 2020-10-09 | 浙江炜宇通风机电有限公司 | 一种玻璃钢轴流通风机 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1628363A1 (de) * | 1966-03-28 | 1972-01-13 | Rotron Mfg Co | Axialgeblaese |
DE2551615A1 (de) * | 1974-11-18 | 1976-05-20 | Papst Motoren Kg | Axialventilator |
US5695318A (en) * | 1991-08-15 | 1997-12-09 | Papst-Motoren Gmbh & Co Kg | Diagonal fan |
WO2001083994A1 (de) * | 2000-04-28 | 2001-11-08 | Verax Ventilatoren Gmbh | Lüfter insbesondere zur belüftung von elektronischen geräten |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3846039A (en) * | 1973-10-23 | 1974-11-05 | Stalker Corp | Axial flow compressor |
US6896095B2 (en) * | 2002-03-26 | 2005-05-24 | Ford Motor Company | Fan shroud with built in noise reduction |
-
2003
- 2003-12-05 DE DE10357289A patent/DE10357289A1/de not_active Withdrawn
-
2004
- 2004-10-25 JP JP2004309098A patent/JP2005171987A/ja not_active Withdrawn
- 2004-11-20 EP EP04027609A patent/EP1538340A3/de not_active Withdrawn
- 2004-11-23 US US10/996,279 patent/US20050123399A1/en not_active Abandoned
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1628363A1 (de) * | 1966-03-28 | 1972-01-13 | Rotron Mfg Co | Axialgeblaese |
DE2551615A1 (de) * | 1974-11-18 | 1976-05-20 | Papst Motoren Kg | Axialventilator |
US5695318A (en) * | 1991-08-15 | 1997-12-09 | Papst-Motoren Gmbh & Co Kg | Diagonal fan |
WO2001083994A1 (de) * | 2000-04-28 | 2001-11-08 | Verax Ventilatoren Gmbh | Lüfter insbesondere zur belüftung von elektronischen geräten |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101319684B (zh) * | 2007-06-05 | 2011-09-14 | 台达电子工业股份有限公司 | 风扇扇框及其制作方法 |
CN105351225A (zh) * | 2015-11-19 | 2016-02-24 | 华蓥市双河第二初级中学 | 一种低噪音的教室用风扇 |
Also Published As
Publication number | Publication date |
---|---|
JP2005171987A (ja) | 2005-06-30 |
DE10357289A1 (de) | 2005-07-07 |
EP1538340A3 (de) | 2005-07-13 |
US20050123399A1 (en) | 2005-06-09 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE4127134B4 (de) | Diagonallüfter | |
EP1462658B1 (de) | Radialgebläse | |
DE10020878C2 (de) | Lüfter insbesondere zur Belüftung von elektronischen Geräten | |
DE69629606T2 (de) | Pumpe mit einem verbesserten Durchflusskanal | |
DE2903369A1 (de) | Kleingeblaese mit elektrischem antriebsmotor | |
DE4006604C2 (de) | ||
DE1428191A1 (de) | Kreiselgeblaese | |
EP2880746B1 (de) | Aktive kühlung eines motors | |
WO2008061502A1 (de) | Axiallüfter für einen fahrzeugkühler | |
EP2691655A1 (de) | Diagonalventilator | |
DE2246265A1 (de) | Pumpe mit taumelbarem laeufer | |
DE2754898C2 (de) | Motor-Ventilatoranordnung | |
EP3347598A1 (de) | Turbo-lüfter mit kühlkörper | |
DE2940650A1 (de) | Axialventilator | |
DE69127832T2 (de) | Staubsauger mit Gebläserad und Diffusor | |
DE2331614A1 (de) | Seitenkanal-geblaese | |
WO2010086210A1 (de) | Seitenkanalgebläse, insbesondere sekundärluftgebläse für eine verbrennungskraftmaschine | |
DE4428633A1 (de) | Kraftstoffpumpe zum Zuführen von Kraftstoff zu einem Fahrzeugmotor | |
DE102010023462A1 (de) | Vorrichtung zum Absaugen oder Verdichten eines Arbeitsfluids | |
EP2104787A1 (de) | Radialgebläse und mit einem radialgebläse versehenes hochdruck-reinigungsgerät | |
EP1538340A2 (de) | Kompakter Diagonallüfter | |
DE4319619A1 (de) | Tauchmotorpumpe | |
DE10024741B4 (de) | Seitenkanalpumpe | |
DE1628361A1 (de) | Zentrifugalgeblaese | |
DE19913950A1 (de) | Seitenkanalverdichter |
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 |
|
PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LU MC NL PL PT RO SE SI SK TR |
|
AX | Request for extension of the european patent |
Extension state: AL HR LT LV MK YU |
|
AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LU MC NL PL PT RO SE SI SK TR |
|
AX | Request for extension of the european patent |
Extension state: AL HR LT LV MK YU |
|
RIC1 | Information provided on ipc code assigned before grant |
Ipc: 7F 04D 17/06 B Ipc: 7F 04D 25/08 A |
|
AKX | Designation fees paid | ||
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20060114 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: 8566 |