EP1934483A1 - Ventilatorrad - Google Patents
VentilatorradInfo
- Publication number
- EP1934483A1 EP1934483A1 EP07788146A EP07788146A EP1934483A1 EP 1934483 A1 EP1934483 A1 EP 1934483A1 EP 07788146 A EP07788146 A EP 07788146A EP 07788146 A EP07788146 A EP 07788146A EP 1934483 A1 EP1934483 A1 EP 1934483A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- mounting flanges
- hub
- fan
- fan wheel
- blades
- 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
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 13
- 239000010959 steel Substances 0.000 claims abstract description 13
- 238000003466 welding Methods 0.000 claims abstract description 13
- 239000002184 metal Substances 0.000 claims description 3
- 238000005452 bending Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 238000003698 laser cutting Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
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
- F04D29/26—Rotors specially for elastic fluids
- F04D29/32—Rotors specially for elastic fluids for axial flow pumps
- F04D29/34—Blade mountings
Definitions
- the present invention relates to a fan wheel consisting of a hollow cylindrical hub, on the periphery of mounting flanges are arranged for releasably securing fan blades.
- Such a fan is known for example from DE 39 41 691 C2.
- the mounting flanges are cast directly on the hub, which also forms the rotor of a drive motor designed as an external rotor motor.
- the blades of the fan wheel are screwed to these mounting flanges. This requires the preparation of expensive casting tools when fan wheels are to be manufactured with differing number of blades or position of the blades.
- the present invention is based on the object, starting from the known fan wheel to improve this so that a production with any number and blade position without expensive special tools is possible, so that a large manufacturing variation width is achieved at low production costs.
- the hollow cylindrical hub is made of steel and the mounting flanges are made of steel and are connected to the hub by welding.
- the invention is based on the recognition that, in contrast to large-area metal blades, the mounting flanges can weld easily. Because these have a relatively small mass and are compact. In contrast, when welding the fan blades as a whole, there is the problem of accurate adjustment already in the welding process and also a delay problem due to the welding heat. In addition, due to the large blade surface, there is a great deal of heat dissipation during the welding process, which is why high welding temperatures are required, which in turn increases the problems of distortion.
- An inventive fan wheel is advantageously provided with a DC motor with bell rotor driven, wherein the bell rotor according to the invention forms the hub of the fan wheel.
- the mounting flanges are made of sheet steel as molded parts, so that a series production of mounting flanges by punching and bending is possible. However, production by a laser cutting method is also possible.
- the wall thickness of the fastening flanges is greater than that of the wheel blades to be fastened.
- FIG. 1 is a plan view of a fan according to the invention
- FIG. 2 is a rear view of the fan wheel of FIG. 1,
- Fig. 3 is a detail for illustrating a device according to the invention
- FIG. 4 is a rear view of the mounting flange of FIG. 3,
- Fig. 5 shows an alternative embodiment of a mounting flange according to
- Fig. 6 is a rear view of the mounting flange of FIG. 5 and
- FIG. 7 is a detailed view of a fan according to the invention suitable for the embodiment of FIG. 5 and 6.
- a fan according to the invention from a hollow cylindrical hub 1, at the periphery of mounting flanges 2 are attached. Fan blades 3 are in turn attached to these mounting flanges 2.
- the hub 1 consists of a hollow cylindrical bell which is closed on one side and which has in its interior a front side hollow cylindrical rotor bushing 4 for receiving the rotor shaft.
- the hub 1 is made of steel and can form the rotor of a DC motor. On the outside of your hub wall 5, this has a plurality of mounting flanges 2, see in particular Fig. 2.
- mounting flanges 2 are circumferentially arranged substantially equidistant and these mounting flanges 2, the rotor blades 3 are screwed by means of a fastening screw 6.
- the mounting flanges 2 consist according to the invention of steel or steel sheet. As a result, a simple and cost-effective production of the mounting flanges 2 is possible.
- the mounting flanges 2 are circumferentially welded to the hub 1.
- the mounting flanges 2 can also be conveniently prepared as stampings or stamped and bent parts. It may also be appropriate to cut them out by a laser cutting process.
- the mounting flanges 2 are relatively compact, wherein the thickness of the mounting flanges 2 may be greater than the thickness of the fan blades to be fastened 3.
- a welding method for welding the mounting flanges 2 to the hub known welding methods, for example Mac, laser or laser with additional material be applied.
- the dimensions of a fan wheel according to the invention are, for example, 200 mm diameter of the hub 1 and, for example, 800 mm diameter of the entire fan wheel. Due to the inventive design, the size and orientation of the blades 3 can be varied as desired. By the invention, the number of blades or the mounting height can be varied much easier.
- an attachment flange 2 consists of a sheet steel stamped and bent part which consists of a central abutment section 7, each with stiffening webs bent at its longitudinal sides 8.
- the stiffening webs 9 have a substantially triangular shape, with the stiffening webs 9 tapering towards the free end of the abutment sections 7.
- the result is a cross-sectionally U-shaped design of the mounting flanges 2, in particular in the lower mounting area, where they are welded to the hub 1.
- the mounting flanges 2 are in this case arranged on the circumference of the hub 1, that the mounting flanges 2 protrude radially and extend on the hub wall 5 obliquely from the front to the back of the hub 1.
- the size and orientation of the mounting flanges 2 can be varied according to the particular requirements of the individual fan wheel. Since both the hub 1 and the mounting flanges 2 are made of steel, a simple welding of the two parts is possible with conventional welding.
- the fan blades 3 are fastened to the fastening flanges 2 in the region of their contact sections 7 on their contact side pointing in the direction of the front side of the hub 1. This attachment takes place by means of the fastening screw 6.
- this screw 6 is screwed into an internal thread opening 10 of the respective fastening flange 2.
- the threaded opening 10 is formed by a hollow-cylindrical projection 11 pointing in the direction of the rear side.
- staggered lugs 12 which protrude from the contact surface of the abutment portion 7 and have a rounded peripheral contour.
- the fan blades 3 are aligned, which is why they have corresponding recesses 15 in their foot region, as shown in FIGS. 1 and 2.
- These lugs 12 are arranged in the recesses 15 with game.
- FIG. 5 A variant of this is shown in Figs. 5, 6 and 7, wherein the same parts are otherwise indicated by the same reference numerals as in the preceding figures.
- parallel slits 13 are pronounced, protrude into the correspondingly adapted web extensions 14 on the blades 3.
- These web extensions 14 are arranged in the corresponding slots 13 of the mounting flanges 2 at least with circumferential play. This allows an exact positioning of the fan blades 3 on the mounting flanges 2 done.
- the web projections 14 are respectively formed on both sides of the fan blades 3 by these, so that the blades 3 can be rotated by 180 °, if a different conveying direction of the fan is desired.
- the embodiment according to the invention makes it possible for fan blades 3 made of a very wide variety of materials to be fastened to the fastening flanges 2 can, for example, fan blades 3 made of metal or plastic. Also, blades 3 of die-cast or of corresponding metal material punched blades 3 can be used, these different blades 3 are all characterized by the same fastening. Also, it is possible by the invention to build blades 3 of larger engines with slow-rotating axial fans on smaller diameter engines, since the same type of fastening can be provided regardless of the blade size.
- 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)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE202006011899U DE202006011899U1 (de) | 2006-08-03 | 2006-08-03 | Ventilatorrad |
PCT/EP2007/057981 WO2008015245A1 (de) | 2006-08-03 | 2007-08-01 | 'ventilatorrad' |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1934483A1 true EP1934483A1 (de) | 2008-06-25 |
EP1934483B1 EP1934483B1 (de) | 2012-11-14 |
Family
ID=37771212
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07788146A Active EP1934483B1 (de) | 2006-08-03 | 2007-08-01 | Ventilatorrad |
Country Status (8)
Country | Link |
---|---|
US (1) | US8128372B2 (de) |
EP (1) | EP1934483B1 (de) |
CN (1) | CN101479484B (de) |
DE (1) | DE202006011899U1 (de) |
DK (1) | DK1934483T3 (de) |
ES (1) | ES2395489T3 (de) |
PT (1) | PT1934483E (de) |
WO (1) | WO2008015245A1 (de) |
Families Citing this family (30)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB0821823D0 (en) * | 2008-11-28 | 2009-01-07 | Truflo Air Movement Ltd | Fan assembly |
CN201439764U (zh) * | 2009-07-27 | 2010-04-21 | 中山大洋电机股份有限公司 | 一种外转子轴流风扇 |
US10132321B2 (en) * | 2009-07-27 | 2018-11-20 | Zhongshan Broad-Ocean Motor Co., Ltd. | Fan system having an external rotor |
WO2011092270A2 (en) | 2010-02-01 | 2011-08-04 | Akzo Nobel Chemicals International B.V. | Process for preparing epichlorohydrin from dichlorohydrin |
CN102312858B (zh) * | 2011-08-25 | 2013-03-20 | 张家港市东丰特种风机有限公司 | 轴流式热风循环风机的叶轮 |
USD728090S1 (en) * | 2012-10-11 | 2015-04-28 | Ebm-Papst Mulfingen Gmbh & Co. Kg | Electric fan |
USD750211S1 (en) * | 2014-02-27 | 2016-02-23 | Mitsubishi Electric Corporation | Propeller fan |
CN104265682A (zh) * | 2014-09-03 | 2015-01-07 | 潘树东 | 可拆卸式冷风扇 |
CN104235066A (zh) * | 2014-10-10 | 2014-12-24 | 江苏富丽华通用设备有限公司 | 一种外转子轴流风机 |
USD804647S1 (en) * | 2016-02-02 | 2017-12-05 | Delta Electronics, Inc. | Fan blade |
US10400780B2 (en) * | 2016-03-08 | 2019-09-03 | Asia Vital Components Co., Ltd. | Structure of fan blades |
US10100840B2 (en) * | 2016-03-08 | 2018-10-16 | Asia Vital Components Co., Ltd. | Fan wheel structure |
US10480525B2 (en) * | 2016-03-08 | 2019-11-19 | Asia Vital Components Co., Ltd. | Fan blade with improved structure |
GB2551719A (en) * | 2016-06-27 | 2018-01-03 | Truflo Air Movement Ltd | Improvements in and relating to a fan assembly |
USD839406S1 (en) * | 2017-03-23 | 2019-01-29 | Ebm-Papst Mulfingen Gmbh & Co. Kg | Connecting element for fan blades |
CN107489647A (zh) * | 2017-09-19 | 2017-12-19 | 张家港保税区创典炉窑通风设备有限公司 | 一种轴流风机叶轮 |
CN107482852A (zh) * | 2017-10-16 | 2017-12-15 | 朱玉洪 | 一种电动机自发电滑环散热装置 |
CN108953224A (zh) * | 2018-07-20 | 2018-12-07 | 安吉元融仪器仪表检测有限公司 | 风扇 |
TWI679830B (zh) * | 2019-01-04 | 2019-12-11 | 建準電機工業股份有限公司 | 馬達及具有該馬達之吊扇 |
USD980409S1 (en) * | 2019-03-07 | 2023-03-07 | Ziehl-Abegg Se | Fan wheel |
USD938010S1 (en) | 2019-12-10 | 2021-12-07 | Regal Beloit America, Inc. | Fan hub |
USD952830S1 (en) | 2019-12-10 | 2022-05-24 | Regal Beloit America, Inc. | Fan shroud |
USD938011S1 (en) | 2019-12-10 | 2021-12-07 | Regal Beloit America, Inc. | Fan blade |
US11859634B2 (en) | 2019-12-10 | 2024-01-02 | Regal Beloit America, Inc. | Fan hub configuration for an electric motor assembly |
USD938009S1 (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 |
US11371517B2 (en) | 2019-12-10 | 2022-06-28 | Regal Beloit America, Inc. | Hub inlet surface for an electric motor assembly |
CN111231327A (zh) * | 2020-01-10 | 2020-06-05 | 中铁第十八工程局涿州水泵厂 | 一种风机叶轮的生产工艺 |
DE102020122318A1 (de) * | 2020-08-26 | 2022-03-03 | Ebm-Papst Mulfingen Gmbh & Co. Kg | Lüfterradsystem zur Zusammenstellung und Herstellung eines Lüfterrades |
USD1043943S1 (en) * | 2021-06-25 | 2024-09-24 | Transportation Ip Holdings, Llc | Fan |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE602960C (de) | 1933-03-17 | 1934-09-19 | Escher Wyss Maschf Ag | Geschweisste Fluegelnabe fuer Kreiselmaschinen mit mindestens drei Schaufeln fuer axialen Durchfluss |
US4636142A (en) * | 1984-05-11 | 1987-01-13 | Household Manufacturing, Inc. | Rotating fan apparatus |
DE3941691A1 (de) | 1989-12-18 | 1990-07-12 | Ziehl Abegg Gmbh & Co Kg | Ventilatorlaufrad mit aussenlaeuferantrieb und einzeln am rotor befestigten schaufeln |
CN2157385Y (zh) * | 1993-04-06 | 1994-02-23 | 苏州市吴县城南化工设备厂 | 钢板圈制成型高颈法兰 |
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 |
FR2866930B1 (fr) | 2004-03-01 | 2008-02-15 | Leroy Somer Moteurs | Ventilateur comportant au moins une pale fixee par bride et contre-bride |
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 |
DE202004010088U1 (de) * | 2004-06-25 | 2004-09-09 | Ebm-Papst Mulfingen Gmbh & Co. Kg | Laufrad, insbesondere für einen Axialventilator |
-
2006
- 2006-08-03 DE DE202006011899U patent/DE202006011899U1/de not_active Expired - Lifetime
-
2007
- 2007-08-01 WO PCT/EP2007/057981 patent/WO2008015245A1/de active Application Filing
- 2007-08-01 ES ES07788146T patent/ES2395489T3/es active Active
- 2007-08-01 PT PT77881464T patent/PT1934483E/pt unknown
- 2007-08-01 US US12/375,807 patent/US8128372B2/en active Active
- 2007-08-01 DK DK07788146.4T patent/DK1934483T3/da active
- 2007-08-01 CN CN2007800236953A patent/CN101479484B/zh active Active
- 2007-08-01 EP EP07788146A patent/EP1934483B1/de active Active
Non-Patent Citations (1)
Title |
---|
See references of WO2008015245A1 * |
Also Published As
Publication number | Publication date |
---|---|
US20100003140A1 (en) | 2010-01-07 |
WO2008015245A1 (de) | 2008-02-07 |
ES2395489T3 (es) | 2013-02-13 |
PT1934483E (pt) | 2012-12-04 |
CN101479484A (zh) | 2009-07-08 |
DE202006011899U1 (de) | 2007-12-13 |
CN101479484B (zh) | 2013-03-20 |
US8128372B2 (en) | 2012-03-06 |
EP1934483B1 (de) | 2012-11-14 |
DK1934483T3 (da) | 2013-03-04 |
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