EP3198152A1 - Axiallüfter zur förderung von kühlluft, insbesondere für einen verbrennungsmotor eines kraftfahrzeuges - Google Patents
Axiallüfter zur förderung von kühlluft, insbesondere für einen verbrennungsmotor eines kraftfahrzeugesInfo
- Publication number
- EP3198152A1 EP3198152A1 EP15759822.8A EP15759822A EP3198152A1 EP 3198152 A1 EP3198152 A1 EP 3198152A1 EP 15759822 A EP15759822 A EP 15759822A EP 3198152 A1 EP3198152 A1 EP 3198152A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- trailing edge
- blade
- axial fan
- contour
- radius
- 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
- F04D29/325—Rotors specially for elastic fluids for axial flow pumps for axial flow fans
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D19/00—Axial-flow pumps
- F04D19/002—Axial flow fans
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/12—Blades
- F01D5/14—Form or construction
- F01D5/141—Shape, i.e. outer, aerodynamic 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
- F04D29/18—Rotors
- F04D29/181—Axial flow rotors
-
- 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
- F04D29/326—Rotors specially for elastic fluids for axial flow pumps for axial flow fans comprising a rotating shroud
-
- 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
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/666—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by means of rotor construction or layout, e.g. unequal distribution of blades or vanes
-
- 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
- F05D2240/00—Components
- F05D2240/20—Rotors
- F05D2240/30—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor
- F05D2240/304—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor related to the trailing edge of a rotor blade
Definitions
- the invention relates to an axial fan for conveying cooling air, in particular for an internal combustion engine of a motor vehicle, comprising a hub on which a plurality of radially outwardly extending fan blades are arranged, each having a blade trailing edge, prior art
- an axial Leitringlmediaer which has a central hub, an annular shell and a number of blades, wherein the blades between the hub and the jacket extend radially.
- the blades which will be referred to as fan blades in the following, are set in the direction of the fan rotation forward and have a leading edge and a trailing edge.
- an axial fan comprising a hub on which a pressure and a suction side, a trailing edge and a blade depth having fan blades are arranged.
- this axial fan on the pressure side of the fan blades on a, contrary to the direction of rotation of the axial fan rising hub ramp on » whereby the trailing edge of the fan blades is divided into a lying radially outside the hub ramp outer region and a radially lying within the hub ramp inner region.
- An embodiment of the invention relates to an axial fan for conveying cooling air, in particular for an internal combustion engine of a motor vehicle, with a hub, on which a plurality of radially outwardly extending fan blades are arranged, each having a blade trailing edge.
- a contour of the blade trailing edge of the fan blades extends in the direction of the circumference curved in a plane which is spanned by an axis of rotation of the fan and a longitudinal extent of the fan blade.
- the contour of the sheet trailing edge extends in its radial extent in three sections, wherein the central portion is formed substantially straight or approximately straight, while the adjoining the middle portion respectively subsequent first and third sections curved. Due to the semi-radial flow through the fan blade under the given conditions, there is a very good compromise between flow rates and static efficiency.
- the first outer, the hub facing away portion of the blade trailing edge is curved with a first radius and the third, adjoining the hub portion of the blade trailing edge with a second radius. This is particularly evident when the contour is projected into a plane defined by the axis of rotation of the radial fan and the radial extent of the fan blade when it is cut with the rotational profile of the axial fan.
- the second radius of the third section and / or the first radius of the first section of the blade trailing edge pass tangentially into the straight section of the contour of the trailing edge of the blade.
- the flow of the flow in the area of the sheet trailing edge is positively influenced.
- the sheet trailing edge is adjusted in the area of predominant flow losses in such a way that both a good pressure build-up and a good efficiency can be achieved.
- a first ratio of the first radius of the third section of the contour of the blade trailing edge to the entire radial extent of the fan blade is between 0.8 and 1, 2, thereby further optimizing the efficiency of the axial fan.
- a second ratio between the first radius of the first portion and the second radius of the third portion of the contour of the blade trailing edge is between 3 and 4.
- the second and third portions of the contour of the blade trailing edge extend approximately over a quarter the radial Extension of the fan blade, whereby the efficiency of the axial fan is further increased.
- a further embodiment allows for the first, the hub facing away portion of the contour of the blade trailing edge extends approximately over half of the radial extent of the fan blade. This embodiment also supports the setting of an optimal ratio between efficiency and flow performance of the axial fan. Further advantageous embodiments are described by the following description of the figures and by the subclaims.
- Fig. 1 shows a first embodiment of the invention
- Fig. 4 is a detail of a front view of the first
- Embodiment of the axial fan according to the invention and a schematic representation of a fan blade of the embodiment of FIG. 1.
- FIGs 1, 2 and 3 show a first embodiment of an axial fan according to the invention 1.
- the axial fan 1 consists of a central hub 2 and an annular shell 3, between which a plurality of fan blades 4 are arranged.
- On the pressure side of the fan blades 4 each one against the direction of rotation of the axial fan 1 rising hub ramp 5 is arranged, which is secured by webs 6 on the fan blade.
- Each fan blade 4 in this case has a blade leading edge 7 arranged at the bottom in the direction of rotation and an upper blade trailing edge 8.
- the contour 9 of the blade trailing edge 8 of the fan blade 4 is illustrated in Fig. 4, where a plane E is spanned by the axis of rotation of the axial fan 1 and the radial extent H of the fan blade 4. If one intersects this plane E with the rotational profile of the axial fan 1, a contour 9 of the blade trailing edge 8 of the fan blade 4 results, which is divided into three sections.
- a first outer section 91 of the contour 9 of the blade trailing edge 8 is curved and described by a first radius R1.
- a central portion 92 of the contour 9 of the blade trailing edge 8 connects, which runs straight.
- the straight portion 92 follows a third inner portion 93 of the contour 9 of the blade trailing edge 8, which is directly adjacent to the hub 2.
- the contour 9 in the third section 93 of the blade trailing edge 8 is curved and can be described by a second radius R2.
- the middle and third sections 92, 93 of the contour 9 of the blade trailing edge 8 extend approximately over a quarter of the radial extent H of the fan blade 4.
- the first outer, the hub 2 facing away portion 91 of the contour 9 of the blade trailing edge 8 extends approximately in the outer half of the radial extent H of the fan blade.
- the curved first and the curved third section 91, 93 tangentially to the straight line.
- a first ratio of the radius R1 of the first outer portion 91 of the contour 9 of the blade trailing edge 8 and the radial extent H of the fan blade 4 is between 0.8 and 1.2 choose. This optimization is assisted when the ratio between the first radius R1 of the first portion 91 and the second radius R2 of the third portion 93 is in the range between 3 and 4.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102014219023.1A DE102014219023A1 (de) | 2014-09-22 | 2014-09-22 | Axiallüfter zur Förderung von Kühlluft, insbesondere für einen Verbrennungsmotor eines Kraftfahrzeuges |
| PCT/EP2015/070701 WO2016045978A1 (de) | 2014-09-22 | 2015-09-10 | Axiallüfter zur förderung von kühlluft, insbesondere für einen verbrennungsmotor eines kraftfahrzeuges |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3198152A1 true EP3198152A1 (de) | 2017-08-02 |
| EP3198152B1 EP3198152B1 (de) | 2021-07-21 |
Family
ID=54064370
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP15759822.8A Active EP3198152B1 (de) | 2014-09-22 | 2015-09-10 | Axiallüfter zur förderung von kühlluft, insbesondere für einen verbrennungsmotor eines kraftfahrzeuges |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US10508652B2 (de) |
| EP (1) | EP3198152B1 (de) |
| JP (1) | JP2017528650A (de) |
| CN (1) | CN106687692A (de) |
| DE (1) | DE102014219023A1 (de) |
| WO (1) | WO2016045978A1 (de) |
Families Citing this family (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 |
Family Cites Families (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2703556A (en) * | 1948-10-09 | 1955-03-08 | Torrington Mfg Co | Rotary fan and fan and orifice assembly |
| US3937189A (en) * | 1974-01-28 | 1976-02-10 | International Harvester Company | Fan shroud exit structure |
| JPS51134906A (en) * | 1975-05-20 | 1976-11-22 | Komatsu Ltd | Cooling fan for engine |
| JPS5489304A (en) * | 1977-12-27 | 1979-07-16 | Nippon Denso Co Ltd | Engine cooling device of vehicle |
| US4329946A (en) * | 1979-10-09 | 1982-05-18 | General Motors Corporation | Shroud arrangement for engine cooling fan |
| JPS6021518Y2 (ja) * | 1980-03-07 | 1985-06-26 | アイシン精機株式会社 | 内燃機関の冷却装置用フアン |
| IT206701Z2 (it) * | 1985-08-02 | 1987-10-01 | Gate Spa | Ventilatore assiale particolarmente per autoveicoli |
| JPS62195494A (ja) * | 1986-02-21 | 1987-08-28 | Aisin Seiki Co Ltd | 内燃機関用冷却装置 |
| DE3724319A1 (de) * | 1987-07-22 | 1989-02-09 | Klifa Gmbh & Co | Luefterrad fuer ein kuehlgeblaese |
| US4915588A (en) | 1989-06-08 | 1990-04-10 | Siemens-Bendix Automotive Electronics Limited | Axial flow ring fan with fall off |
| US5244347A (en) * | 1991-10-11 | 1993-09-14 | Siemens Automotive Limited | High efficiency, low noise, axial flow fan |
| US5193608A (en) * | 1992-03-25 | 1993-03-16 | Toyo Radiator Co., Ltd. | Radiator with fan for motor vehicles |
| US5393199A (en) * | 1992-07-22 | 1995-02-28 | Valeo Thermique Moteur | Fan having a blade structure for reducing noise |
| US5326226A (en) * | 1993-05-28 | 1994-07-05 | Philadelphia Mixers Corporation | Continuous curve high solidity hydrofoil impeller |
| JP4700414B2 (ja) | 2005-06-02 | 2011-06-15 | 本田技研工業株式会社 | 空冷内燃機関用多翼ファン |
| DE102006023417A1 (de) * | 2006-05-17 | 2007-11-22 | Ford Global Technologies, LLC, Dearborn | Lüfterrad als Bestandteil eines Lüfters zur Kühlung eines Kraftfahrzeugantriebs |
| DE102010062301A1 (de) * | 2010-12-01 | 2012-06-06 | Behr Gmbh & Co. Kg | Axiallüfter |
-
2014
- 2014-09-22 DE DE102014219023.1A patent/DE102014219023A1/de not_active Withdrawn
-
2015
- 2015-09-10 EP EP15759822.8A patent/EP3198152B1/de active Active
- 2015-09-10 JP JP2017515968A patent/JP2017528650A/ja active Pending
- 2015-09-10 CN CN201580051034.6A patent/CN106687692A/zh active Pending
- 2015-09-10 WO PCT/EP2015/070701 patent/WO2016045978A1/de not_active Ceased
-
2017
- 2017-03-16 US US15/460,753 patent/US10508652B2/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| JP2017528650A (ja) | 2017-09-28 |
| US20170184112A1 (en) | 2017-06-29 |
| WO2016045978A1 (de) | 2016-03-31 |
| US10508652B2 (en) | 2019-12-17 |
| CN106687692A (zh) | 2017-05-17 |
| DE102014219023A1 (de) | 2016-03-24 |
| EP3198152B1 (de) | 2021-07-21 |
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