EP4103848A1 - Axiallüfter mit öffnungen in der nabe - Google Patents
Axiallüfter mit öffnungen in der nabeInfo
- Publication number
- EP4103848A1 EP4103848A1 EP21705868.4A EP21705868A EP4103848A1 EP 4103848 A1 EP4103848 A1 EP 4103848A1 EP 21705868 A EP21705868 A EP 21705868A EP 4103848 A1 EP4103848 A1 EP 4103848A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fan
- hub
- axial fan
- side wall
- fan hub
- 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
- F04D29/329—Details of the hub
-
- 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
- F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
- F04D29/701—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps
- F04D29/703—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps specially for fans, e.g. fan guards
-
- 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
- F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
- F04D29/701—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps
- F04D29/706—Humidity separation
-
- 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
- F05D2260/00—Function
- F05D2260/60—Fluid transfer
- F05D2260/602—Drainage
-
- 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
- F05D2260/00—Function
- F05D2260/60—Fluid transfer
- F05D2260/605—Venting into the ambient atmosphere or the like
-
- 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
- F05D2260/00—Function
- F05D2260/60—Fluid transfer
- F05D2260/607—Preventing clogging or obstruction of flow paths by dirt, dust, or foreign particles
Definitions
- the invention relates to an axial fan, comprising:
- a fan hub rotatable about a central axis, which has a bottom wall and a ring-shaped circumferential side wall,
- the fan hub having a plurality of outlet openings for the exit of gaseous, liquid and / or solid collections from the interior of the fan hub to the outside of the fan hub.
- Such an axial fan is already known from EP 1718 872 B1.
- a cup-shaped hub with a bottom and an annular side wall is provided. Ribs are arranged on the inside of the hub.
- the hub In order to remove deposits such as water, sand, earth or mud from the cavity of the hub, the hub has openings on the bottom. The passage openings are located in those corner areas of the hub base which are formed by the side wall and the internal ribs. In use, the deposits are driven by the centrifugal force along the ribs in the corner areas and diverted from there through the passage openings to the outside.
- the side wall and the respective rib form a double barrier, which should facilitate the discharge of the deposits.
- the object of the present invention is to alleviate or remedy at least individual disadvantages of the prior art.
- the invention aims in particular to improve the discharge of accumulations from the interior of the fan hub.
- the plurality of outlet openings are provided on the annular circumferential side wall of the fan hub.
- the accumulations such as moisture or dirt, but also gases, in the interior of the fan hub on the motor side can be discharged particularly well through the outlet openings in the annular circumferential side wall.
- the accumulations are conveyed to the outside by the centrifugal force and diverted in the direction of the centrifugal force through the outlet openings on the ring-shaped circumferential, i.e. in particular cylindrical shell-shaped, side wall.
- the flow conditions for the removal of the accumulations have proven to be particularly favorable on the side wall.
- the axial fan can be operated in both directions of rotation with a favorable air throughput.
- the outlet openings are preferably spaced apart from both annular side edges of the side wall, so that the outlet openings are arranged completely within the side wall of the fan hub.
- the bottom wall is free of openings for the accumulations from the interior of the fan hub.
- the bottom wall can have a passage for a motor shaft. In the assembled state, the motor shaft is arranged essentially precisely in the implementation, which is preferably in the center of the Bottom wall is located.
- At least one outlet opening is provided on the annular circumferential side wall of the fan hub for each fan blade. This means that residues can be reliably removed from the interior of the fan hub.
- the outlet openings are preferably arranged at regular intervals on the side wall of the fan hub, so that uniform discharge is achieved over the circumference of the fan hub.
- the outlet openings in a further embodiment directly adjoin the fan blades.
- the air flow after passing through the outlet opening is guided along the fan blade, whereby a particularly effective discharge of the accumulations is achieved.
- an outlet opening is provided on the opposite outer sides of the fan blades.
- two outlet openings can be provided per fan blade. This design is particularly favorable in that the fan can be operated effectively in both directions of rotation.
- the outlet openings can be designed as slots.
- elevations can be provided which stand from the annular circumferential side wall. Extensive investigations have shown that these elevations increase the air flow through the outlet openings, which improves the discharge of the accumulations out of the fan hub.
- the elevations rise towards the outlet openings, so that the elevations are designed as ramps.
- the elevations can each have an essentially constant slope or a slope that increases towards the respective outlet opening.
- the axial fan can be dismantled and reassembled with little effort.
- Leistenele elements and recesses can be provided.
- the strip elements and the recesses have corresponding cross-sections. In this way, a form-fitting connection is achieved.
- the strip elements and the depressions can each be designed with a round cross-section.
- the interlocking connecting elements in a preferred embodiment extend essentially over the entire height of the annular circumferential side wall.
- each sector element preferably has exactly one fan blade.
- the sector elements together form the fan hub with a ring-shaped circumferential side wall. Accordingly, each sector element has an opening angle which is essentially the ratio of 360 degrees and the number of sector elements. With eight sector elements, the opening angle of the sector elements is 45 degrees, for example.
- the fan hub has ribs on the inside of the bottom wall. Stiffening ribs can be provided which extend up to the inside of the side wall. Furthermore, air guide ribs can be provided between the stiffening ribs, which are preferably at a distance from the side wall end up.
- a shaft of a motor can be connected to the fan hub.
- the shaft extends through the interior of the fan hub to the implementation, which is arranged in the center of the bottom wall.
- An electric motor in particular a “brushless” motor, can be provided as the motor.
- Fig. 1 shows a plan view of an axial fan according to the invention.
- FIG. 2 shows a perspective view of the axial fan from FIG. 1.
- FIG 3 shows a view of the axial fan of FIGS. 1, 2 in the de-assembled state of individual sector elements of the axial fan.
- Fig. 4 shows a side view of the axial fan of FIGS. 1 to
- FIG. 5 shows detail A of FIG. 2 in an enlarged illustration.
- FIG. 6 shows detail B of FIG. 4 in an enlarged illustration.
- FIGS. 7 and 8 show diagrammatic views of a single sector element of the axial fan of FIGS. 1 to 4.
- Fig. 9 shows a rear view of the sector element of Figs
- FIG. 10 shows a side view of the sector element of FIGS. 7 to 9.
- FIG. 11 shows detail C of FIG. 7 in an enlarged illustration.
- FIG. 12 shows detail D of FIG. 7 in an enlarged illustration.
- FIG. 13 shows detail E of FIG. 8 in an enlarged illustration.
- FIG. 14 shows detail F of FIG. 8 in an enlarged illustration.
- FIG. 15 shows detail G of FIG. 9 in an enlarged illustration.
- FIG. 16 shows detail H of FIG. 9 in an enlarged illustration.
- FIG. 17 shows a plan view of a further axial fan according to the invention.
- FIG. 18 shows a rear view of the axial fan from FIG. 17.
- FIG. 20 shows detail I of FIG. 20 in an enlarged illustration.
- FIG. 21 shows a section along the line XXI-XXI in FIG.
- FIG. 22 shows detail J of FIG. 21 in an enlarged illustration.
- FIG. 23 shows detail K of FIG. 19 in an enlarged illustration.
- the fan hub 2 has a central passage 4 for a shaft of a motor (not shown).
- the fan hub 2 has a base wall 5, which is circular in plan view, and a side wall 6 in the shape of a cylinder jacket.
- the bottom wall 5 is arranged essentially perpendicular to the central axis 3.
- the side wall 6 runs axially symmetrically about the central axis 3.
- the fan hub 2 is thus cup-shaped, the bottom wall 5 and the side wall 6 delimiting an interior 2a.
- the motor can be arranged at least partially within the interior 2a.
- the axial fan 1 also has a plurality of fan blades or fan blades 7, eight fan blades 7 in the example shown, which protrude from the side wall 6 of the fan hub 2 outward in the radial direction.
- the fan hub 2 has a plurality of outlet openings 8, which are designed to transport gaseous, liquid and / or solid accumulations that arise during operation from the interior 2a of the fan hub 2 to the outside 2b of the fan hub 2. Such accumulations can be, for example, what water, dirt or gases which could impair the operation of the axial fan 1 if they remained in the interior 2a.
- the passage openings 8 are on the annular circumferential side wall 6, so not denwand 5 on the Bo is formed.
- At least one outlet opening 8 is provided for each fan blade 7.
- two outlet openings 8 are provided on both sides of each fan blade 7.
- the outlet openings 8 are formed here as slots. Since the outlet openings 8 in the embodiment shown directly adjoin the outer sides of the fan blades 7, the air flows after passing through the outlet openings along the outer sides of the fan blades 7 leads, as indicated in the drawings with flow lines 9.
- the fan hub 2 is composed of a plurality of sector elements 10, here, for example, of eight sector elements 10, composed.
- the individual sector elements 10 are connected to one another via interlocking connecting elements 11.
- the connecting elements 11 can be plugged into one another in the axial direction (ie in the direction of the central axis 3).
- outer connecting elements 11a are provided on the side wall 6 and inner connecting elements 11b are provided on a projection 12 which limits the passage 4 for the motor shaft.
- interlocking connecting elements 11 bar elements 13 (see in particular Fig.
- connecting elements 11 extend essentially over the entire height of the annular circumferential side wall 6.
- the fan hub 2 has individual ribs 15 on the inside 6a of the base wall 6 (facing the interior 2a).
- one rib 15 can be provided per fan blade 7.
- eight ribs 15 are therefore provided in the interior 2a of the fan hub 2.
- outlet openings 8 are also provided on the annular side wall 6 of the fan hub 2, whereas the bottom wall 5 is free of such outlet openings.
- the outlet openings 8 are spaced apart from the fan blades 7 here.
- elevations 16 are formed which protrude outward from the outside of the annular circumferential side wall 6.
- the elevations 23 rise in the form of a ramp towards the outlet openings 8.
- the elevations 23 each have an essentially constant slope. However, the slope can also increase in the direction of the adjacent outlet opening 8 (not shown).
- ribs 15 are also provided in this Ausry tion, on the one hand stiffening ribs 15a extend to the side wall 6 and air guide ribs are arranged between them, which end in front of the side wall 6.
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 |
|---|---|---|---|
| ATGM50025/2020U AT17059U1 (de) | 2020-02-11 | 2020-02-11 | Axiallüfter |
| PCT/AT2021/060051 WO2021159161A1 (de) | 2020-02-11 | 2021-02-11 | Axiallüfter mit öffnungen in der nabe |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP4103848A1 true EP4103848A1 (de) | 2022-12-21 |
| EP4103848C0 EP4103848C0 (de) | 2025-04-02 |
| EP4103848B1 EP4103848B1 (de) | 2025-04-02 |
Family
ID=74661193
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP21705868.4A Active EP4103848B1 (de) | 2020-02-11 | 2021-02-11 | Axiallüfter mit öffnungen in der nabe |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US12012970B2 (de) |
| EP (1) | EP4103848B1 (de) |
| CN (1) | CN114846247B (de) |
| AT (1) | AT17059U1 (de) |
| WO (1) | WO2021159161A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115539418B (zh) * | 2022-11-10 | 2023-08-18 | 广州市金瑞昌建筑环境工程有限公司 | 一种高效制冷工业风机 |
Family Cites Families (33)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3533711A (en) * | 1966-02-26 | 1970-10-13 | Gen Electric | Cooled vane structure for high temperature turbines |
| SE433108B (sv) * | 1977-05-17 | 1984-05-07 | Flaekt Ab | Axialflekt med ett flekthjul med instellbara skovlar |
| JPH0431697A (ja) * | 1990-05-24 | 1992-02-03 | Seiko Epson Corp | 軸流送風機の羽根構造 |
| DE4143383C2 (de) * | 1991-07-03 | 1995-03-30 | Licentia Gmbh | Axialgebläse, insbesondere zur Kühlung eines dem Kühler eines Fahrzeugs vorgeordneten Kondensators einer Klimaanlage |
| US5871335A (en) * | 1995-10-31 | 1999-02-16 | Siemens Electric Limited | Twist-lock attachment system for a cooling fan and motor |
| DE19710608B4 (de) * | 1997-03-14 | 2007-10-31 | Behr Gmbh & Co. Kg | Axiallüfter für den Kühler eines Verbrennungsmotors |
| US5967764A (en) * | 1997-08-08 | 1999-10-19 | Bosch Automotive Systems Corporation | Axial fan with self-cooled motor |
| JPH11230092A (ja) * | 1998-02-12 | 1999-08-24 | Japan Servo Co Ltd | 軸流ファン |
| DE19929978B4 (de) * | 1999-06-30 | 2006-02-09 | Behr Gmbh & Co. Kg | Lüfter mit Axialschaufeln |
| US6468037B1 (en) * | 1999-08-06 | 2002-10-22 | American Cooling Systems, Llc | Fan clutch with central vanes to move air to fan blades |
| DE10314820B4 (de) * | 2003-04-01 | 2016-11-24 | General Motors Corp. (N.D.Ges.D. Staates Delaware) | Verfahren zum Verhindern der Einfrierung von Wasser im Anodenkreislauf eines Brennstoffzellensystems sowie Brennstoffzellensystem |
| ES2300799T3 (es) * | 2003-04-28 | 2008-06-16 | Robert Bosch Llc | Conjunto de ventilador de refrigeracion de motor de automovil. |
| US7244110B2 (en) * | 2003-09-30 | 2007-07-17 | Valeo Electrical Systems, Inc. | Fan hub assembly for effective motor cooling |
| ITBO20040047A1 (it) * | 2004-02-03 | 2004-05-03 | Spal Srl | Ventilatore assiale |
| US7616440B2 (en) * | 2004-04-19 | 2009-11-10 | Hewlett-Packard Development Company, L.P. | Fan unit and methods of forming same |
| CN100560986C (zh) | 2007-12-26 | 2009-11-18 | 西安交通大学 | 一种用于电子元器件散热的轴流风扇 |
| KR101546905B1 (ko) * | 2008-01-30 | 2015-08-24 | 엘지전자 주식회사 | 공기조화기용 실외기 |
| DE102009055609A1 (de) * | 2009-11-25 | 2011-05-26 | Behr Gmbh & Co. Kg | Lüfter für eine Brennkraftmaschine |
| CN101846087B (zh) | 2010-05-11 | 2011-09-14 | 东元总合科技(杭州)有限公司 | 离心风扇及设有该离心风扇的密闭式电机 |
| US8091177B2 (en) * | 2010-05-13 | 2012-01-10 | Robert Bosch Gmbh | Axial-flow fan |
| IT1404254B1 (it) * | 2011-01-25 | 2013-11-15 | Gate Srl | Ventola, particolarmente per un gruppo di ventilazione per uno scambiatore di calore di un autoveicolo |
| TWI464326B (zh) | 2011-12-05 | 2014-12-11 | Giga Byte Tech Co Ltd | 風扇模組 |
| TWI526621B (zh) | 2012-09-18 | 2016-03-21 | 台達電子工業股份有限公司 | 風扇 |
| ITTO20140004U1 (it) * | 2014-01-10 | 2015-07-10 | Johnson Electric Asti S R L | Ventola per un elettroventilatore di raffreddamento, particolarmente per uno scambiatore di calore per un autoveicolo |
| US10167766B2 (en) * | 2015-04-24 | 2019-01-01 | Briggs & Stratton Corporation | Reverse fin cooling fan |
| PL412269A1 (pl) * | 2015-05-11 | 2016-11-21 | General Electric Company | Zanurzony wlot kanału przepływu między łopatką wirnika i łopatką kierowniczą dla turbiny gazowej z otwartym wentylatorem |
| ITUB20152894A1 (it) * | 2015-08-05 | 2017-02-05 | Spal Automotive Srl | Ventilatore assiale |
| EP3423719A1 (de) * | 2016-03-01 | 2019-01-09 | Valeo Systemes Thermiques | Motorgebläseanordnung mit einem hydraulischen wärmeübertragungsflüssigkeitskühlkreislauf |
| US10280935B2 (en) * | 2016-04-26 | 2019-05-07 | Parker-Hannifin Corporation | Integral fan and airflow guide |
| CN205895693U (zh) * | 2016-08-12 | 2017-01-18 | 珠海格力电器股份有限公司 | 轴流风轮和轴流风机 |
| JP6981226B2 (ja) * | 2017-12-20 | 2021-12-15 | トヨタ自動車株式会社 | 送風ファン |
| CN110630538A (zh) * | 2018-06-25 | 2019-12-31 | 台达电子工业股份有限公司 | 风扇 |
| DE102018128821A1 (de) * | 2018-11-16 | 2020-05-20 | Ebm-Papst Mulfingen Gmbh & Co. Kg | Diagonalventilator mit optimiertem Diagonallaufrad |
-
2020
- 2020-02-11 AT ATGM50025/2020U patent/AT17059U1/de unknown
-
2021
- 2021-02-11 WO PCT/AT2021/060051 patent/WO2021159161A1/de not_active Ceased
- 2021-02-11 EP EP21705868.4A patent/EP4103848B1/de active Active
- 2021-02-11 CN CN202180007636.7A patent/CN114846247B/zh active Active
- 2021-02-11 US US17/798,865 patent/US12012970B2/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| WO2021159161A1 (de) | 2021-08-19 |
| AT17059U1 (de) | 2021-04-15 |
| EP4103848C0 (de) | 2025-04-02 |
| US12012970B2 (en) | 2024-06-18 |
| CN114846247A (zh) | 2022-08-02 |
| CN114846247B (zh) | 2024-07-12 |
| US20230104569A1 (en) | 2023-04-06 |
| EP4103848B1 (de) | 2025-04-02 |
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