EP2627910A1 - Lüfter mit lüfterschaufeln - Google Patents
Lüfter mit lüfterschaufelnInfo
- Publication number
- EP2627910A1 EP2627910A1 EP11773440.0A EP11773440A EP2627910A1 EP 2627910 A1 EP2627910 A1 EP 2627910A1 EP 11773440 A EP11773440 A EP 11773440A EP 2627910 A1 EP2627910 A1 EP 2627910A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fan
- hub
- blade
- fan blade
- ramp
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
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
- F04D29/26—Rotors specially for elastic fluids
- F04D29/32—Rotors specially for elastic fluids for axial flow pumps
- F04D29/38—Blades
- F04D29/384—Blades characterised by form
-
- 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
- F04D29/26—Rotors specially for elastic fluids
- F04D29/32—Rotors specially for elastic fluids for axial flow pumps
- F04D29/325—Rotors specially for elastic fluids for axial flow pumps for axial flow fans
- F04D29/329—Details of the hub
Definitions
- the invention relates to a fan with fan blades, in particular for radiators of motor vehicles, wherein the fan blades are fastened on a fan hub.
- a fan with fan blades which has a hub ramp on the pressure side of the fan blades, whereby the flow is stabilized on the pressure side of the fan blades.
- air guide elements Arranged on the suction-side region of the fan blades are air guide elements which form a flow channel and guide the air in a targeted manner from the hub to the suction side of the fan blade, ie in the region of the cylindrical fan hub or in the region of the hub ramp.
- the air guide elements are designed as fin-like stabilizer motors.
- the outer surfaces of the stabilizers and surfaces of further radial vane elements arranged on the stabilizers are integrated with one another, so that a common, transition-free surface is formed. It also extends the hub ramp on the pressure side the fan blade is arranged, from the blade root area, from which in addition to the radial blade element and the stabilizer emanates.
- Such an arrangement has the disadvantage that mass accumulations arise in the region of the connection of the fan blade to the fan hub, which entail the risk that production-related air pockets or blowholes are enclosed in these mass accumulations.
- a long production time is required because very long cooling times are necessary.
- a high material input is required.
- the invention is therefore an object of the invention to provide a fan with fan blades, which ensures a reduction in mass accumulation in the field of connections of the fan blades, the manufacturing cost of the fan is reduced, and the production time is reduced.
- each fan blade is angled towards the rear in the direction of a blade root, wherein an angled portion of the fan blade is at least partially pulled down on the fan hub.
- a curvature and / or a radius of the fan blade in a first area of the fan blade extending outwards from the bend are different from a curvature and / or a radius of the second area, which extends from the bend towards the fan hub, with the second area of the air coming in! is pulled down on the fan hub.
- the second area of the fan blade which is pulled down onto the fan hub, is designed to be angled forward in the direction of rotation on the leading edge.
- This embodiment improves the flow conditions between the two successive fan blades.
- the clogging of the fan blade in the area of the fan hub also serves to improve the acoustic properties of the fan.
- a hub ramp between two fan blades is conical. This hub ramp stabilizes the hub area, which allows a clean and low-loss flow around the blade root in the fan hub.
- the hub ramp starting from the blade root of a fan blade arranged at the fan hub, is guided directly onto the trailing edge of the following fan blade.
- the auxiliary ramp forms an integral part of the fan blade, which is particularly advantageous in terms of flow. As a result, the strength of the fan is guaranteed with a low material usage.
- a stabilizer is arranged on a side of the fan blade facing away from the hub ramp, which is formed in particular on the second region of the fan blade in the portion of the fan blade which is pulled down onto the fan hub.
- the stabilizer serves as Flow control and prevents vortex structures in the fan hub.
- the stabilizer runs on a smaller radius than the hub ramp on the back of the fan blade.
- the stabilizer is arranged as an injection molded part on the fan blade. The stabilizers in the blade root area of the fan blades cause separation of hub and blade flow on the suction side of the fan blades and prevent separation of the flow and harmful vortex formation.
- the center of gravity of the fan blade "Preferably, the first portion of the fan blade advanced so far forward toward the suction side, that compensate, centrifugal force acting on the fan blade and one generated by a pressure increase aerodynamic force approximately mutually.
- This has the advantage that the reaction force of the fan blade resulting from the centrifugal forces lies in the flow direction in front of the fan hub.
- at least one rib on the pressure side of the fan is arranged radially at the position of the connection of the blade root to the fan hub. This ensures the flow of power from the fan hub to the fan blade.
- the rib has a curved outer edge, wherein the rib extends from the fan hub to preferably to the hub ramp.
- the at least one rib are arranged next to the actual connection of the fan blade to the fan hub, so that this connection, which is exposed to the highest load by the pressure building up, is relieved.
- Figure 1 perspective view of an embodiment of a fan according to the invention
- FIG. 2 shows a detail of a front side of the fan according to FIG. 1
- FIG. 3 section of a rear side of the fan according to FIG. 1;
- FIG. 4 illustration of the stabilizer and a ramp on one side;
- Figure 5 radially arranged ribs on the back of the fan
- Figure 6 enlarged view of the radially arranged ribs according to
- a fan with fan blades which are designed as axial scoops, is used in a utility vehicle, where it is driven by a vehicle engine. is driven.
- the fan is connected to an engine end face either directly on a crankshaft or via a belt or gear output with this.
- the regulation of the rotation time of the fan is carried out by a clutch which is arranged within a fan hub. Due to this coupling to the vehicle engine, high mechanical loads act on the fan. On the one hand in the form of vibrations of the vehicle engine or by the bending of the crankshaft. On the other hand by the speed.
- an overspeed of the vehicle engine as a result of a switching error of the clutch is not regulated so fast, so that acts on the fan high speed load.
- Such a fan 1 is shown in Figure 1 and consists of a plurality of fan blades 2, which are arranged around a fan hub 3 and secured thereto with a blade root 15.
- Each fan blade 2 is divided into two areas 4, 5, the fan blade 2 has between these two areas 4, 5 a bend 6.
- the second, leading to the fan hub, inner region 5 is pulled back away from the first, outwardly projecting portion 4 and rests on the fan hub 3.
- the first area 4 of the fan blade 2 has a different arc profile than the second area 5 of the fan blade 2, which is pulled down onto the fan hub 3.
- a smaller radius is set at the first, larger radius of the first area 4 of the fan blade 2, so that the second area 5 of the fan blade 2 forms a different arc than the first area 4 of the fan blade 2.
- a blade-like shape of the fan blade 2 is achieved.
- the front edge 8 of the pulled-down second region 5 of the fan blade 2 is splayed forward in the direction of rotation of the fan 1.
- the sacculated area of the front edge 8 of the fan blade 2 in the area of the fan hub 3 is identified by the reference numeral 8a. This sickle contributes to an improvement in the acoustics of the fan 1.
- the momentum of the second region 5 of the fan blade 2 is thereby pulled out of the area of the fan hub 3.
- FIG. 3 shows a detail of the rear side (pressure side) of the fan 1, a hub ramp 9 being arranged on each fan blade 2.
- This hub ramp 9 is made conical in the area between the fan blade 2 and the subsequent fan blade 2a.
- the ramp leading edge 13 is rounded and pulled toward the fan hub 3 inwards.
- the hub ramp 9 is performed starting from the fan hub 3 directly from the previous fan blade 2 on the trailing edge 10 of the following fan blade 2a.
- the hub ramp 9 and the fan blade 2 form a structural unit and are integrally fused with one another, since the hub ramp 9 extends starting from the connection point of the second region 5 of the fan blade 2.
- the hub ramp 9 terminates at the trailing edge 10 of the next ventilation door 2a, approximately halfway up the fan blade 2a. With this configuration, the strength of the fan 1 is ensured at a low material usage.
- the hub ramp 9 is stabilized by a plurality of ribs 11 relative to the fan hub 3,
- FIG. 4 shows a section of the front (storage side) of the fan 1.
- a stabilizer 7 is arranged at the front of the fan blade 2.
- the hub ramp 9, which is located on the back of the fan blade 2, is shown in phantom for this reason.
- the stabilizer 7 is approximately perpendicular to the fan blade 2 and protrudes out of this, whereby the flow is stabilized.
- the stabilizer 7 serves as a flow guide to prevent vortex structures in the area of the fan hub 3 in their propagation.
- the stabilizer 7 begins on the fan blade 2 in the pulled-down area 5 (second area 5 of the fan blade 2) and ends at the leading edge 8 of the fan blade 2. Opposite the fan hub 3, the stabilizer 7 has a smaller radius than the hub ramp. 9
- Figure 5 shows a plan view of the back of the fan 1, to which radially extending ribs 11 are arranged, which serve to stiffen the fan 1.
- at least three ribs 11 are provided on each fan blade 2, wherein at least two ribs 11 support the hub ramp 9.
- These ribs 11 contribute to the fact that the respective fan blade 2 is better relieved when voltage spikes occur.
- the power flow is ensured by the fan hub 3 in the fan blade 2 by the ribs 11.
- the fan blade 2 is reinforced by a rib 11a at the point where it comes into contact with the fan hub 3.
- the ribs 11 are arranged right and left to the connection 14 of the fan blade 2 to the fan hub 3.
- the depth of the ribs 11 at the connection 14 to the fan hub 3 and the hub ramp 9 is minimal for reasons of material savings, but deep enough that the stresses in the hub ramp 9 through the centrifugal force acting on the fan blade 2, not too large.
- the rib 11 ends about 2 cm in front of the rear edge of the hub ramp 9.
- the ribs 11 in this case have a curved outer edge 12 and widen in their surface. starting from the fan hub 3 in the direction of the hub ramp 9. This curved rib shape improves the flow conditions at this point.
- FIG 8 shows a schematic representation of the forces that occur on the fan 1, when the fan rotates, being viewed from the side of the fan blade 2.
- the fan blade 2 is not arranged centrally relative to the hub 3, but the center of gravity 16 of the fan blade 2 is moved forward to the front (suction side) of the fan 1, the air conveying direction 17 from the left on the fan blade 2 on.
- a centrifugal force Fz of the fan blade 2 is generated, which occurs at the front edge of the fan blade 2.
- R radius of the fan is determined, viewed in the flow direction in front of the fan hub 3 is located.
- This centrifugal force F z counteracts an aerodynamic force F D.
- This aerodynamic force F D arises on the back (pressure side) of the venting blade 2 by a pressure increase.
- the aerodynamic force F D acts on the trailing edge of the fan blade 2 and tries to move the fan blade 2 in the direction of the air conveying direction 17.
- the fan blade 2 builds up a pressure.
- the described fan 1 is made of a plastic. Manufacturing technology, the fan 1 is generated with a simple on / off tool without the use of sliders, whereby the use of plastic is minimized.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102010042325A DE102010042325A1 (de) | 2010-10-12 | 2010-10-12 | Lüfter mit Lüfterschaufeln |
| PCT/EP2011/067835 WO2012049220A1 (de) | 2010-10-12 | 2011-10-12 | Lüfter mit lüfterschaufeln |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2627910A1 true EP2627910A1 (de) | 2013-08-21 |
| EP2627910B1 EP2627910B1 (de) | 2017-06-21 |
Family
ID=44862963
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP11773440.0A Active EP2627910B1 (de) | 2010-10-12 | 2011-10-12 | Lüfter mit lüfterschaufeln |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US9447791B2 (de) |
| EP (1) | EP2627910B1 (de) |
| JP (1) | JP6045498B2 (de) |
| CN (1) | CN203476797U (de) |
| BR (1) | BR112013009031A2 (de) |
| DE (1) | DE102010042325A1 (de) |
| RU (1) | RU2579800C2 (de) |
| WO (1) | WO2012049220A1 (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115596706A (zh) * | 2022-10-31 | 2023-01-13 | 东风马勒热系统有限公司(Cn) | 轴流风扇 |
Families Citing this family (31)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010062301A1 (de) * | 2010-12-01 | 2012-06-06 | Behr Gmbh & Co. Kg | Axiallüfter |
| WO2014080494A1 (ja) * | 2012-11-22 | 2014-05-30 | 三菱電機株式会社 | 空気調和機 |
| KR102200395B1 (ko) * | 2013-12-12 | 2021-01-08 | 엘지전자 주식회사 | 축류팬 및 이를 포함하는 공기 조화기 |
| USD725257S1 (en) * | 2014-01-28 | 2015-03-24 | Asustek Computer Inc. | Fan blade |
| DE102014204043A1 (de) * | 2014-03-05 | 2015-09-10 | MAHLE Behr GmbH & Co. KG | Lüfterrad eines Axiallüfters |
| RU2665191C2 (ru) * | 2014-05-13 | 2018-08-28 | Р.Е.М. Холдинг С.Р.Л. | Лопасть для промышленного осевого вентилятора и промышленный осевой вентилятор, содержащий такую лопасть |
| US9869190B2 (en) | 2014-05-30 | 2018-01-16 | General Electric Company | Variable-pitch rotor with remote counterweights |
| SG10201912863UA (en) * | 2014-08-07 | 2020-02-27 | Mitsubishi Electric Corp | Axial flow fan and air-conditioning apparatus having axial flow fan |
| DE102014219046A1 (de) | 2014-09-22 | 2016-03-24 | Mahle International Gmbh | Lüfterrad |
| US20160146088A1 (en) * | 2014-11-20 | 2016-05-26 | Jeff Richardson | Cooling Fan Assembly |
| US10072510B2 (en) | 2014-11-21 | 2018-09-11 | General Electric Company | Variable pitch fan for gas turbine engine and method of assembling the same |
| MX392790B (es) | 2015-04-08 | 2025-03-24 | Horton Inc | Caracteristicas de superficie de aspa de ventilador. |
| USD782639S1 (en) | 2015-06-24 | 2017-03-28 | Mitsubishi Electric Corporation | Propeller fan |
| USD797917S1 (en) * | 2015-08-17 | 2017-09-19 | Delta T Corporation | Fan with light |
| US10100653B2 (en) | 2015-10-08 | 2018-10-16 | General Electric Company | Variable pitch fan blade retention system |
| USD859630S1 (en) * | 2015-11-20 | 2019-09-10 | Kichler Lighting Llc | Ceiling fan |
| DE102015224096A1 (de) | 2015-12-02 | 2017-06-08 | Mahle International Gmbh | Lüfterrad für einen Axiallüfter |
| CN105485045A (zh) * | 2015-12-24 | 2016-04-13 | 浙江亿利达风机股份有限公司 | 一种塑料轴流叶轮 |
| KR101745904B1 (ko) * | 2016-10-19 | 2017-06-13 | 주식회사 한미마이크로닉스 | 이중 날개가 형성된 냉각팬 |
| AU2016427676B2 (en) * | 2016-10-27 | 2019-11-14 | Mitsubishi Electric Corporation | Propeller fan, outdoor unit, and refrigeration cycle apparatus |
| CN106640321A (zh) * | 2016-12-09 | 2017-05-10 | 重庆道同动力机械设备有限公司 | 一种发动机热交换风轮结构 |
| CN110945250B (zh) * | 2017-08-09 | 2021-09-28 | 三菱电机株式会社 | 螺旋桨风扇、送风装置及制冷循环装置 |
| USD860427S1 (en) | 2017-09-18 | 2019-09-17 | Horton, Inc. | Ring fan |
| JP6583397B2 (ja) * | 2017-12-05 | 2019-10-02 | 株式会社富士通ゼネラル | プロペラファン |
| WO2020028010A1 (en) | 2018-08-02 | 2020-02-06 | Horton, Inc. | Low solidity vehicle cooling fan |
| DE102019108676A1 (de) * | 2019-04-03 | 2020-10-08 | Mahle International Gmbh | Lüfterrad |
| DE102020200652A1 (de) | 2020-01-21 | 2021-07-22 | Mahle International Gmbh | Lüfterrad |
| CN115217791B (zh) * | 2021-04-15 | 2025-06-17 | 宁波奥克斯电气有限公司 | 一种轴流风叶以及空调器 |
| US11674435B2 (en) | 2021-06-29 | 2023-06-13 | General Electric Company | Levered counterweight feathering system |
| US11795964B2 (en) | 2021-07-16 | 2023-10-24 | General Electric Company | Levered counterweight feathering system |
| US12601271B2 (en) | 2022-10-21 | 2026-04-14 | General Electric Company | Variable pitch fan of a gas turbine engine |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE355646B (de) * | 1971-03-30 | 1973-04-30 | Svenska Flaektfabriken Ab | |
| US4671739A (en) * | 1980-07-11 | 1987-06-09 | Robert W. Read | One piece molded fan |
| DE4020742A1 (de) * | 1990-06-29 | 1992-01-02 | Behr Gmbh & Co | Laufrad fuer einen ventilator |
| RU2124654C1 (ru) * | 1998-02-06 | 1999-01-10 | Открытое акционерное общество Московский вентиляторный завод | Рабочее колесо осевого вентилятора |
| DE19929978B4 (de) | 1999-06-30 | 2006-02-09 | Behr Gmbh & Co. Kg | Lüfter mit Axialschaufeln |
| US6375427B1 (en) * | 2000-04-14 | 2002-04-23 | Borgwarner Inc. | Engine cooling fan having supporting vanes |
| DE50110684D1 (de) | 2001-01-02 | 2006-09-21 | Behr Gmbh & Co Kg | Lüfter mit Axialschlaufen |
| WO2002063172A1 (en) * | 2001-02-07 | 2002-08-15 | Denso Corporation | Axial fan for vehicle |
| JP4679074B2 (ja) * | 2004-05-19 | 2011-04-27 | アイシン化工株式会社 | 冷却ファン |
| US8240996B2 (en) * | 2007-05-10 | 2012-08-14 | Borgwarner Inc. | Synergistic blade and hub structure for cooling fans |
| CN201636038U (zh) * | 2010-01-12 | 2010-11-17 | 雪龙集团有限公司 | 一种高效节能降本风扇 |
-
2010
- 2010-10-12 DE DE102010042325A patent/DE102010042325A1/de not_active Withdrawn
-
2011
- 2011-10-12 US US13/879,121 patent/US9447791B2/en active Active
- 2011-10-12 RU RU2013121573/06A patent/RU2579800C2/ru not_active IP Right Cessation
- 2011-10-12 JP JP2013533205A patent/JP6045498B2/ja active Active
- 2011-10-12 BR BR112013009031A patent/BR112013009031A2/pt not_active Application Discontinuation
- 2011-10-12 WO PCT/EP2011/067835 patent/WO2012049220A1/de not_active Ceased
- 2011-10-12 CN CN201190000906.3U patent/CN203476797U/zh not_active Expired - Lifetime
- 2011-10-12 EP EP11773440.0A patent/EP2627910B1/de active Active
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2012049220A1 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115596706A (zh) * | 2022-10-31 | 2023-01-13 | 东风马勒热系统有限公司(Cn) | 轴流风扇 |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2627910B1 (de) | 2017-06-21 |
| WO2012049220A1 (de) | 2012-04-19 |
| CN203476797U (zh) | 2014-03-12 |
| US9447791B2 (en) | 2016-09-20 |
| RU2579800C2 (ru) | 2016-04-10 |
| RU2013121573A (ru) | 2014-11-20 |
| JP6045498B2 (ja) | 2016-12-14 |
| JP2013539840A (ja) | 2013-10-28 |
| US20130287581A1 (en) | 2013-10-31 |
| DE102010042325A1 (de) | 2012-04-12 |
| BR112013009031A2 (pt) | 2017-10-31 |
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