EP1851443A1 - Axiallüfter - Google Patents
AxiallüfterInfo
- Publication number
- EP1851443A1 EP1851443A1 EP06706737A EP06706737A EP1851443A1 EP 1851443 A1 EP1851443 A1 EP 1851443A1 EP 06706737 A EP06706737 A EP 06706737A EP 06706737 A EP06706737 A EP 06706737A EP 1851443 A1 EP1851443 A1 EP 1851443A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fan
- axial
- axial fan
- hub
- combustion engine
- 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
- F04D29/386—Skewed blades
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2250/00—Geometry
- F05B2250/10—Geometry two-dimensional
- F05B2250/16—Geometry two-dimensional parabolic
Definitions
- the invention relates to an axial fan for a radiator of an internal combustion engine, in particular of a motor vehicle, with a rotatably driven hub, are fixed to the fan blades, which are bounded radially inwardly by an inner diameter and radially outside of an outer diameter.
- Such a fan has the task of providing a sufficient amount of cooling air when the wind is insufficient, for example, when driving slowly or when the vehicle is stationary.
- the required delivery volume of the fan is very different.
- the pressure build-up required to deliver the cooling air flow is provided by the fan.
- the fan obstructs the flow of air, increasing the dynamic pressure.
- the object of the invention is to provide an axial fan for a radiator of an internal combustion engine, in particular of a motor vehicle, with a rotatably driven hub on which fan blades are fixed, which are bounded radially inward by an inside diameter and radially outside by an outside diameter.
- the compact design and is designed so that it generates a large mass flow at high pressure during operation.
- the object is achieved in an axial fan for a radiator of an internal combustion engine, in particular of a motor vehicle, with a rotatably driven hub, are fixed to the fan blades, the radially inside of an inner diameter and radially outward of an outer diameter are limited, achieved that the Ratio between the inner diameter and the outer diameter is greater than 40 percent.
- the dimensions of the enclosed between the inner and outer diameter fan passage area are adapted in conventional fans for the cooling of an internal combustion engine to the size of the radiator to ensure a sufficiently large air passage area even when driving fast and with the fan off.
- a fan is provided which is as small as possible, so that a venetian blind, which releases an additional air passage area during high-speed travel, can be as large as possible.
- the ratio between the inner diameter and the outer diameter of the fan passage area is referred to as hub ratio.
- the hub ratio according to the invention creates an axial fan with a high power density.
- a preferred embodiment of the axial fan is characterized in that the ratio of the projecting from the fan blades on the fan passage surface fan blade surfaces to the annular fan passage area is greater than 60 percent.
- the ratio of the fan blade areas projected from the fan blades to the fan passage area to the annular fan passage area is also referred to as the coverage ratio.
- the covering ratio according to the invention ensures that the fan generates sufficient airflow at normal speeds.
- a further preferred exemplary embodiment of the axial fan is characterized in that the fan blades are sown in a direction opposite to the air flow direction.
- the crescent-shaped design of the fan blades has proved to be particularly advantageous in the context of the present invention.
- a further preferred exemplary embodiment of the axial fan is characterized in that the leading edge of the fan blades has a parabolic shape. gene course has.
- the parabolic formation of the leading edges of the fan blades has proven to be particularly advantageous in the context of the present invention.
- a further preferred exemplary embodiment of the axial fan is characterized in that the origin or apex of the parabola coincides with the intersection of the outer diameter of the fan passage area with the front edge of the associated fan blade.
- a further preferred embodiment of the axial fan is characterized in that the angle of attack at the front edge of the fan blades over the radius of the fan passage surface is greater than 20 degrees.
- An angle of attack is the angle enclosed between a radius and a tangent to the leading edge of a fan blade.
- Another preferred embodiment of the axial fan is characterized in that the profile length of the fan blades over the radius of the fan passage area is almost constant.
- the profile length is the extent of the fan blades in the air flow direction or in the axial direction.
- Another preferred exemplary embodiment of the axial fan is characterized in that the deviations of the profile length from a mean profile length are less than +/- 6 percent.
- a cooler for an internal combustion engine in particular a motor vehicle, which is flowed through by a medium, in particular of coolant, which serves for example for cooling the internal combustion engine, and which has an air passage surface
- the drive in a so-called Stauffybe- from an air flow flows through a first air flow path, which is closed by a shutter, and is flowed through in a so-called fan operation of an air flow along a second air flow path
- the above-stated object is achieved in that the second air flow path through a previously written fan runs, which is arranged between the radiator and the internal combustion engine.
- Figure 1 is a schematic representation of an axial fan according to the invention in plan view
- Figure 2 shows the axial fan of Figure 1, wherein the projecting from the fan blades on the fan passage surface fan blade surfaces are hatched.
- Figure 1 shows an axial fan 1, which comprises a hub 2, are attached to the nine fan blades 11 to 19.
- the hub is driven in a clockwise direction by, for example, a fluid friction clutch or electric motor (not shown).
- the unit consisting of the axial fan 1 and the fluid friction clutch serves to convey cooling air through the radiator of a motor vehicle.
- the structure and function of a motor vehicle radiator are assumed to be known and not further explained here.
- the fan blades 11 to 19 have a common inner diameter Di and a common outer diameter Da on. Between the inner diameter Di and the outer diameter Da, the axial fan 1 has an annular passage area for air. When the hub 2 is rotated, then the fan blades 11 to 19 rotate in a clockwise direction, as indicated by an arrow 26. Each fan blade 11 to 19 has a front edge which is parabolic. The leading edge of the fan blade 11 is denoted by 28. The leading edge of the fan blade 12 is designated 29. At the front edge 28 of the fan blade 11 is a part of a Parabola 30 drawn whose vertex or origin 31 coincides with the intersection of the leading edge 28 and the outer diameter Da.
- the leading edge 29 of the fan blade 12 has an angle of attack ⁇ , which is connected between a tangent to the front edge and the associated radius. Between a tangent T1 and a radius R1 an angle of attack ⁇ 1 is included. Between a tangent T2 and a radius R2 an angle of attack ⁇ 2 is included. Between a tangent T3 and a radius R3 an angle of attack ⁇ 3 is included.
- the angles of attack ⁇ 1 to ⁇ 3 are each about 40 degrees.
- the axial fan 1 from FIG. 1 is shown in the same view as in FIG. 1, wherein the fan blade surfaces projected by the fan blades 11 to 19 are hatched into the annular surface projected between the outer diameter Da and the inner diameter Di.
- the ratio of the projected leaf areas to the annular area of the axial fan 1 is referred to as the coverage ratio.
- the blade width of the fan blades 11 to 19 is selected so that a coverage ratio of more than 60 percent results.
- the ratio of the inner diameter Di to the outer diameter Da is referred to as a hub ratio and is more than 40 percent in the axial fan 1 according to the invention.
- the fan blades 11 to 19 of the axial fan 1 are sown backwards.
- the angles ⁇ 1 to ⁇ 3 (see FIG. 1) between the front edge 29 and the associated radius R1, R2, R3 are always greater than 20 degrees.
- the flat front edges all follow a parabolic course, as illustrated by the front edge 28 of the fan blade 11.
- the origin of the parabola is at the junction between the leading edge of the blade 28 and the outer diameter Da, which is also called a jacket.
- the profile lengths are almost constant over the radius. The deviations from the average profile length are less than + / 6 percent.
- the inventive design allows a very compact fan design. Due to the very compact axial fan 1, the shutter area of the radiator can be correspondingly large.
- hub ramps may be provided in the axial fan according to the invention, which may be provided on the hub of the fan.
- each case opposite to the direction of rotation rising hub ramps can be provided, which are limited in each case to the outside by an outer surface.
- DE 41 17 342 C1 the disclosure of which hereby expressly belongs to the disclosure of the present application.
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 |
|---|---|---|---|
| DE102005005977A DE102005005977A1 (de) | 2005-02-09 | 2005-02-09 | Axiallüfter |
| PCT/EP2006/001095 WO2006084674A1 (de) | 2005-02-09 | 2006-02-08 | Axiallüfter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1851443A1 true EP1851443A1 (de) | 2007-11-07 |
| EP1851443B1 EP1851443B1 (de) | 2010-04-28 |
Family
ID=36291948
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP06706737A Expired - Lifetime EP1851443B1 (de) | 2005-02-09 | 2006-02-08 | Axiallüfter |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20080156282A1 (de) |
| EP (1) | EP1851443B1 (de) |
| JP (1) | JP2008530414A (de) |
| AT (1) | ATE466196T1 (de) |
| DE (2) | DE102005005977A1 (de) |
| WO (1) | WO2006084674A1 (de) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USD860427S1 (en) | 2017-09-18 | 2019-09-17 | Horton, Inc. | Ring fan |
| WO2020028010A1 (en) | 2018-08-02 | 2020-02-06 | Horton, Inc. | Low solidity vehicle cooling fan |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2377445C1 (ru) * | 2008-09-17 | 2009-12-27 | Сергей Вячеславович Караджи | Осевое рабочее колесо |
| DE102012011594B4 (de) * | 2012-06-13 | 2016-09-22 | Decoma (Germany) Gmbh | Steuerbarer Lufteinlass für ein Kraftfahrzeug mit Zylinderlamellen |
| USD726300S1 (en) * | 2013-04-24 | 2015-04-07 | Spal Automotive S.R.L. | Fan |
| TWD162385S (zh) * | 2013-09-05 | 2014-08-11 | 訊凱國際股份有限公司 | 散熱風扇(一) |
| TWD160897S (zh) * | 2013-10-09 | 2014-06-01 | 訊凱國際股份有限公司 | 散熱風扇(一) |
| TWD160896S (zh) * | 2013-10-09 | 2014-06-01 | 訊凱國際股份有限公司 | 散熱風扇(二) |
| US10093152B2 (en) | 2014-06-09 | 2018-10-09 | Dometic Sweden Ab | Shrouded roof vent for a vehicle |
| MX392790B (es) | 2015-04-08 | 2025-03-24 | Horton Inc | Caracteristicas de superficie de aspa de ventilador. |
| USD765188S1 (en) * | 2015-04-20 | 2016-08-30 | Calogero A. LaRussa | Flying propeller |
| USD787037S1 (en) | 2015-07-01 | 2017-05-16 | Dometic Sweden Ab | Fan |
| US10400783B1 (en) * | 2015-07-01 | 2019-09-03 | Dometic Sweden Ab | Compact fan for a recreational vehicle |
| US11027595B2 (en) | 2016-10-13 | 2021-06-08 | Dometic Sweden Ab | Roof fan assembly |
| USD832987S1 (en) | 2016-10-13 | 2018-11-06 | Dometic Sweden Ab | Roof fan shroud |
| US11536279B1 (en) * | 2022-03-07 | 2022-12-27 | Stokes Technology Development Ltd. | Thin type counter-rotating axial air moving device |
Family Cites Families (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3335648A1 (de) * | 1983-09-30 | 1985-04-18 | Siemens AG, 1000 Berlin und 8000 München | Leitradloser axialventilator, insbesondere zur belueftung von waermetauschern |
| US4569632A (en) * | 1983-11-08 | 1986-02-11 | Airflow Research And Manufacturing Corp. | Back-skewed fan |
| US4971520A (en) * | 1989-08-11 | 1990-11-20 | Airflow Research And Manufacturing Corporation | High efficiency fan |
| DE4117342C1 (de) * | 1991-05-27 | 1992-09-10 | Behr Gmbh & Co, 7000 Stuttgart, De | |
| EP0569863B1 (de) * | 1992-05-15 | 2000-03-29 | Siemens Canada Limited | Flacher Axiallüfter |
| US5513951A (en) * | 1993-03-29 | 1996-05-07 | Nippondenso Co., Ltd. | Blower device |
| US5996685A (en) * | 1995-08-03 | 1999-12-07 | Valeo Thermique Moteur | Axial flow fan |
| US6106228A (en) * | 1996-09-06 | 2000-08-22 | Siemens Electric Limited | Fan shroud air door assembly |
| DE19652398A1 (de) * | 1996-12-17 | 1998-06-18 | Behr Gmbh & Co | Kühler für ein Kraftfahrzeug |
| DE19710608B4 (de) * | 1997-03-14 | 2007-10-31 | Behr Gmbh & Co. Kg | Axiallüfter für den Kühler eines Verbrennungsmotors |
| US6856941B2 (en) * | 1998-07-20 | 2005-02-15 | Minebea Co., Ltd. | Impeller blade for axial flow fan having counter-rotating impellers |
| US6241474B1 (en) * | 1998-12-30 | 2001-06-05 | Valeo Thermique Moteur | Axial flow fan |
| US6544010B1 (en) * | 2000-06-09 | 2003-04-08 | Lg Electronics Co., Ltd. | Axial flow fan with brushless direct current motor |
| DE60117177T2 (de) * | 2000-11-08 | 2006-09-28 | Robert Bosch Corp., Broadview | Hocheffizienter, zustromangepasster axiallüfter |
| DE50212188D1 (de) * | 2001-08-01 | 2008-06-12 | Behr Gmbh & Co Kg | Kühlsystem für fahrzeuge |
| JP2003120588A (ja) * | 2001-10-18 | 2003-04-23 | Denso Corp | 送風装置 |
| KR100484828B1 (ko) * | 2002-11-27 | 2005-04-22 | 엘지전자 주식회사 | 냉장고의 냉기순환용 축류팬 |
| KR100550529B1 (ko) * | 2003-12-30 | 2006-02-10 | 엘지전자 주식회사 | 냉장고용 원심팬 |
| JP4679074B2 (ja) * | 2004-05-19 | 2011-04-27 | アイシン化工株式会社 | 冷却ファン |
-
2005
- 2005-02-09 DE DE102005005977A patent/DE102005005977A1/de not_active Withdrawn
-
2006
- 2006-02-08 AT AT06706737T patent/ATE466196T1/de active
- 2006-02-08 DE DE502006006847T patent/DE502006006847D1/de not_active Expired - Lifetime
- 2006-02-08 US US11/815,577 patent/US20080156282A1/en not_active Abandoned
- 2006-02-08 EP EP06706737A patent/EP1851443B1/de not_active Expired - Lifetime
- 2006-02-08 WO PCT/EP2006/001095 patent/WO2006084674A1/de not_active Ceased
- 2006-02-08 JP JP2007553569A patent/JP2008530414A/ja active Pending
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2006084674A1 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USD860427S1 (en) | 2017-09-18 | 2019-09-17 | Horton, Inc. | Ring fan |
| WO2020028010A1 (en) | 2018-08-02 | 2020-02-06 | Horton, Inc. | Low solidity vehicle cooling fan |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1851443B1 (de) | 2010-04-28 |
| US20080156282A1 (en) | 2008-07-03 |
| WO2006084674A1 (de) | 2006-08-17 |
| DE502006006847D1 (de) | 2010-06-10 |
| DE102005005977A1 (de) | 2006-08-10 |
| JP2008530414A (ja) | 2008-08-07 |
| ATE466196T1 (de) | 2010-05-15 |
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