EP2047107A1 - Ventilatorschaufel - Google Patents
VentilatorschaufelInfo
- Publication number
- EP2047107A1 EP2047107A1 EP07788132A EP07788132A EP2047107A1 EP 2047107 A1 EP2047107 A1 EP 2047107A1 EP 07788132 A EP07788132 A EP 07788132A EP 07788132 A EP07788132 A EP 07788132A EP 2047107 A1 EP2047107 A1 EP 2047107A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- insert
- blade
- fan
- fan blade
- blade body
- 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
- F04D29/388—Blades characterised by construction
Definitions
- the present invention relates to a fan blade for an axial fan with a blade body consisting of an inner insert and a part of this enveloping outer blade molding, which consists of a material of low strength than the insert.
- Such a fan blade is known from EP 1 571 346 A2.
- the insert consists of two plate-shaped items that are mutually perpendicular. Due to this design of the insert of the blade body must have a relatively large thickness to completely enclose the insert. This results in high material cost and also the centrifugal force of the rotating blade wheel is thereby increased, which leads to an increased force load. In addition, the manufacture and pre-assembly of the two plate-shaped items is complex.
- the present invention is based on the object to provide a fan blade, on the one hand enables a cost-effective production and assembly and practically in longitudinal shaft direction during rotation substantially no Matehellmaschineitch subject.
- the insert part is designed as a flat metal part which is adapted substantially to the shape of the blade molding and which has an uncoated planar fastening section in the fan blade root area.
- the blade molding is inventively designed as a plastic injection molded part.
- the attachment portion is not in front of the outer fan blade contour, but the attachment portion is integrated in the blade contour.
- the flat planar design of the attachment portion allows easy mounting of the fan blade according to the invention with simultaneous alignment. Due to the inventive design, the fan impeller according to the invention in its interior with a large proportion of the insert itself, which can be made relatively thin, z. B. It can be made of a 2 mm thick sheet steel or be made of aluminum sheet.
- the Kunststoffumsphtzung is such that a cover of the insert is achieved, however, the plastic volume can be kept low.
- the fastening section is preferably arranged approximately centrally in the fan blade foot region and extends directly from the edge of the foot region into the blade molding. As a result, a very uniform force is possible in the fan blade and the drive and centrifugal forces are absorbed directly by the insert, whereby a physical relief of the blade molding is made of plastic, so that this undergoes no elongation during operation.
- the invention further relates to a fan wheel using the fan blade according to the invention.
- FIG. 1 is a view of a fan blade according to the invention
- Fig. 2 is a view of the fan blade of FIG. 1, but in one
- FIG. 3 shows the insert according to FIG. 2 as an individual representation
- FIG. 5 is a view of a fan wheel according to the invention.
- Fig. 6 is a single view of a fan according to the invention as shown in FIG.
- a fan blade according to the invention consists of a blade body 1, which is formed from an insert part 3 and a part 2 surrounding this outer blade molding.
- the insert 3 is embedded in the blade molding 2 and completely enclosed except for its uncoated mounting portion 4.
- the blade molding 2 is preferably as Plastic injection molded part and the insert 3 is encapsulated during the injection process of the plastic injection molded part simultaneously.
- the plastic material used is in particular a polyamide plastic or polypropylene or polybutylene terephthalate (PBT). According to the invention, it may be expedient if the insert part 3 is provided with a primer layer as adhesion promoter before the extrusion coating. As is apparent from Fig.
- the mounting portion 4 remains uncoated, so that here the metal sheet consisting of insert 3 can be attached under direct contact with a mounting flange of a hub of a fan wheel.
- the attachment portion 4 has a bore 5, through which the required fastening screw 26 can be inserted.
- Ausrichtaus traditions 6 are formed in the mounting portion 4, fit into the adapted projections 24 on the mounting flange 22 of the fan hub 21, see Fig. 5 and 6.
- the mounting portion 4 is flat and flat, so that the system on the corresponding mounting flange is possible over the entire surface.
- the attachment section 4 is arranged approximately centrally in the fan blade foot region 7 and extends directly from the edge 8 of the foot region 7 into the blade molding part 2.
- the insert 3 thus does not project beyond the edge 8 with its attachment section 4, but is integrated within the blade molding part 2.
- the insert part 3 is formed starting from the mounting portion 4 as a curved molding.
- a curvature is present both in the direction of the longitudinal axis YY and in the direction of the transverse axis XX.
- a corresponding curvature also has the fan blade according to the invention. Since the fastening portion 4 is flat, it is surrounded by an oppositely curved transition region 10. Furthermore, it can be seen in the figures that the insert part 3 has two stiffening ribs 12 in the exemplary embodiment shown.
- stiffening ribs 12 extend in the manner of a spoke from the circumference of the fastening section 4 in the direction of the longitudinal extent or the longitudinal axis YY of the blade body 1 or of the insert part 3. These stiffening ribs 12 are embossed into the material of the insert part 3.
- the insert part 3 consists of a steel sheet or an aluminum sheet with a thickness of for example 2 mm. Furthermore, it can be seen that the insert part 3 has a plurality of apertures 13 formed in its surface, which may be in particular circular or elliptical in shape. Through these openings 13, the plastic material can pass during encapsulation with the plastic material of the blade molding part 2, so that a through-connection of the plastic takes place on both sides of the insertion part 3.
- the distribution of the apertures 13 is such that the plurality of apertures 13 between the end of the stiffening ribs 12 and the foot portion 7 of the blade forming part 2 opposite end and in the direction of rotation of the fan blade or the Ventilartorschaufel in the region between the stiffening ribs 12 and the respective rear Longitudinal edge 11 of the fan blade are arranged.
- the apertures 13 are arranged so and there that they are present in the areas and ensure a through connection of the plastic material, where the largest plastic overlap is present.
- apertures 13 are formed in the immediate vicinity of the transition section 10.
- Fig. 2 it can be seen that the adaptation of the shape of the insert 3 and the shape of the blade body 1 is such that the boundary edges of the blade body 1 and the insert 3 in the foot area 7 coincide and the two opposite boundary edges in the longitudinal direction of the YY Insert part 3 and the corresponding boundary edges of the blade body 1 extend to each other such that, starting from the foot region 7, an expanding gap region is present between these edges.
- the gap region 14 in the region of the rear boundary edges 11, 11a in the direction of rotation is designed to be much larger than the gap region 15 of the longitudinal longitudinal edges 11b, 11c, d in the direction of rotation.
- H. in the direction of rotation front portion of the blade body is only a slight overlap of the blade molding part 2 with respect to the insert part 3 is present.
- the insert 3 has a maximum length I, which is about 60% to 85%, preferably about 75% to 80% of the maximum length L of the blade body 1. Furthermore, the insert 3 has a maximum width b, which is 35% to 60%, preferably 38% to 53% of the maximum width B of the blade body 1.
- An inventive fan wheel 20 consists of a hollow cylindrical hub 21, on the periphery of mounting flanges 22 are formed. At these mounting flanges 22, the fan blades according to the invention are attached.
- the hub 21 is made of die-cast aluminum or steel and can form the rotor of a DC motor.
- the mounting flanges 22 may be conveniently prepared as stampings or stamped and bent parts. Due to the attachment according to the invention by welding the mounting flanges 22, the size and orientation of the blade moldings 2 can be varied as desired.
- the mounting flanges 22 may be formed as a sheet steel stamped and bent part, which consists of a central abutment portion 27, each with its longitudinal sides 28 bent stiffening webs 29.
- the stiffening webs 29 have a substantially triangular shape, with the stiffening webs 29 tapering towards the free end of the abutment sections 27. This results in a cross-sectionally U-shaped design of the mounting flanges 22, in particular in the lower mounting area, where they are welded to the hub 21.
- the invention is not limited to the illustrated and described embodiments, but also includes all the same in the context of the invention embodiments. Furthermore, the invention has hitherto not been limited to the feature combination defined in claim 1, but may also be defined by any other combination of specific features of all individually disclosed individual features. This means that in principle virtually every individual feature of claim 1 can be omitted or replaced by at least one individual feature disclosed elsewhere in the application. In this respect, the claim 1 is to be understood only as a first formulation attempt for an invention.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Power Steering Mechanism (AREA)
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE202006011898U DE202006011898U1 (de) | 2006-08-03 | 2006-08-03 | Ventilatorschaufel |
| PCT/EP2007/057963 WO2008015233A1 (de) | 2006-08-03 | 2007-08-01 | 'ventilatorschaufel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2047107A1 true EP2047107A1 (de) | 2009-04-15 |
| EP2047107B1 EP2047107B1 (de) | 2011-01-12 |
Family
ID=38637602
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP07788132A Active EP2047107B1 (de) | 2006-08-03 | 2007-08-01 | Ventilatorschaufel |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US8167564B2 (de) |
| EP (1) | EP2047107B1 (de) |
| CN (1) | CN101473141B (de) |
| AT (1) | ATE495368T1 (de) |
| DE (2) | DE202006011898U1 (de) |
| ES (1) | ES2356398T3 (de) |
| PT (1) | PT2047107E (de) |
| WO (1) | WO2008015233A1 (de) |
Families Citing this family (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9140130B2 (en) | 2012-03-08 | 2015-09-22 | United Technologies Corporation | Leading edge protection and method of making |
| US9091452B2 (en) * | 2012-11-14 | 2015-07-28 | Yu-Chi Yen | Misting fan |
| USD771228S1 (en) * | 2013-12-30 | 2016-11-08 | Ebm-Papst Mulfingen Gmbh & Co. Kg | Fan |
| USD761949S1 (en) | 2015-01-12 | 2016-07-19 | Hunter Fan Company | Ceiling fan |
| MX392790B (es) | 2015-04-08 | 2025-03-24 | Horton Inc | Caracteristicas de superficie de aspa de ventilador. |
| GB2551719A (en) * | 2016-06-27 | 2018-01-03 | Truflo Air Movement Ltd | Improvements in and relating to a fan assembly |
| CN106351873B (zh) * | 2016-10-31 | 2019-11-08 | 泛仕达机电股份有限公司 | 一种风扇叶片 |
| DE102017106233A1 (de) * | 2017-03-23 | 2018-09-27 | Ebm-Papst Mulfingen Gmbh & Co. Kg | Anschlusselement |
| CN107171467A (zh) * | 2017-07-19 | 2017-09-15 | 广东泛仕达机电有限公司 | 一种电机包铝转子结构 |
| CN107701511A (zh) * | 2017-09-30 | 2018-02-16 | 杭州顿力电器有限公司 | 一种采用分体风叶的外转子轴流风机 |
| CN110500318B (zh) * | 2019-09-18 | 2024-07-09 | 江苏富丽华通用设备股份有限公司 | 一种轴流风机 |
| USD938011S1 (en) | 2019-12-10 | 2021-12-07 | Regal Beloit America, Inc. | Fan blade |
| USD952830S1 (en) | 2019-12-10 | 2022-05-24 | Regal Beloit America, Inc. | Fan shroud |
| USD938010S1 (en) | 2019-12-10 | 2021-12-07 | Regal Beloit America, Inc. | Fan hub |
| US11555508B2 (en) | 2019-12-10 | 2023-01-17 | Regal Beloit America, Inc. | Fan shroud for an electric motor assembly |
| USD938009S1 (en) | 2019-12-10 | 2021-12-07 | Regal Beloit America, Inc. | Fan hub |
| US11859634B2 (en) | 2019-12-10 | 2024-01-02 | Regal Beloit America, Inc. | Fan hub configuration for an electric motor assembly |
| US11371517B2 (en) | 2019-12-10 | 2022-06-28 | Regal Beloit America, Inc. | Hub inlet surface for an electric motor assembly |
| DE102020122318A1 (de) * | 2020-08-26 | 2022-03-03 | Ebm-Papst Mulfingen Gmbh & Co. Kg | Lüfterradsystem zur Zusammenstellung und Herstellung eines Lüfterrades |
| US12473926B1 (en) | 2024-08-14 | 2025-11-18 | Morrison Products, Inc. | Impellers and manufacturing methods thereof |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1165738A (en) * | 1966-11-01 | 1969-10-01 | Cooling Dev Ltd | Improvements in and relating to Fan-Type Impellers and to Blade Assemblies for use therewith |
| US4636142A (en) * | 1984-05-11 | 1987-01-13 | Household Manufacturing, Inc. | Rotating fan apparatus |
| US4746271A (en) * | 1987-03-25 | 1988-05-24 | Hayes-Albion Corporation | Synthetic fan blade |
| US5655882A (en) * | 1996-05-02 | 1997-08-12 | Engineered Cooling Systems, Inc. | Fan assembly and method |
| US6027310A (en) * | 1999-07-26 | 2000-02-22 | Angelo Fan Brace Licensing, L.L.C. | Ceiling fan with easy installation features |
| CN2532290Y (zh) * | 2001-12-30 | 2003-01-22 | 百宝有限公司 | 用于电风扇的分离扣装叶叉 |
| US20030231960A1 (en) * | 2002-06-12 | 2003-12-18 | Usui Kokusai Sangyo Kaisha Limited | Fan blade assembly |
| US6692233B2 (en) * | 2002-06-26 | 2004-02-17 | Hoo Cheung Group Ltd. | Lockable quick-release blade assembly for ceiling fans |
| CN2705640Y (zh) * | 2004-06-08 | 2005-06-22 | 昌达电器工业股份有限公司 | 组合立式风扇叶轮 |
-
2006
- 2006-08-03 DE DE202006011898U patent/DE202006011898U1/de not_active Expired - Lifetime
-
2007
- 2007-08-01 DE DE502007006253T patent/DE502007006253D1/de active Active
- 2007-08-01 CN CN2007800231659A patent/CN101473141B/zh active Active
- 2007-08-01 US US12/375,834 patent/US8167564B2/en active Active
- 2007-08-01 PT PT07788132T patent/PT2047107E/pt unknown
- 2007-08-01 ES ES07788132T patent/ES2356398T3/es active Active
- 2007-08-01 AT AT07788132T patent/ATE495368T1/de active
- 2007-08-01 WO PCT/EP2007/057963 patent/WO2008015233A1/de not_active Ceased
- 2007-08-01 EP EP07788132A patent/EP2047107B1/de active Active
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2008015233A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101473141B (zh) | 2012-05-23 |
| DE502007006253D1 (de) | 2011-02-24 |
| WO2008015233A1 (de) | 2008-02-07 |
| ATE495368T1 (de) | 2011-01-15 |
| US20090324413A1 (en) | 2009-12-31 |
| US8167564B2 (en) | 2012-05-01 |
| PT2047107E (pt) | 2011-02-01 |
| EP2047107B1 (de) | 2011-01-12 |
| CN101473141A (zh) | 2009-07-01 |
| DE202006011898U1 (de) | 2007-12-13 |
| ES2356398T3 (es) | 2011-04-07 |
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