EP2771581A1 - Axialventilatorrad - Google Patents
AxialventilatorradInfo
- Publication number
- EP2771581A1 EP2771581A1 EP11773290.9A EP11773290A EP2771581A1 EP 2771581 A1 EP2771581 A1 EP 2771581A1 EP 11773290 A EP11773290 A EP 11773290A EP 2771581 A1 EP2771581 A1 EP 2771581A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- hub
- axialventilatorrad
- axial
- blade
- wheel 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
- 238000001816 cooling Methods 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 4
- 239000004033 plastic Substances 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 abstract description 7
- 230000000694 effects Effects 0.000 description 4
- 230000006872 improvement Effects 0.000 description 3
- 230000007704 transition Effects 0.000 description 2
- 230000004323 axial length Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006735 deficit Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 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
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
- F04D25/082—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation the unit having provision for cooling the motor
-
- 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
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/5806—Cooling the drive system
Definitions
- the present invention relates according to the preamble of claim 1 a Axialventilatorrad with a wheel body, which consists of a tubular, hollow cylindrical hub and arranged distributed over the circumference, with the outer
- each fan blade in the region of a hub connected to the blade root extends axially and circumferentially obliquely between an inflow side and an outflow side of the hub.
- Such an axial fan impeller is described in the document EP 1 609 996 A1 / B1.
- This impeller can be pressed with its hub for attachment to a rotating part, in particular to a rotor of an electric motor.
- a substantially cylindrical or annular Ronde is arranged within the hub.
- the present invention is therefore based on the object to improve a Axialventilatorrad of the described generic type with respect to its main flow and its air performance. This is achieved by the features of independent claim 1 according to the invention.
- Advantageous embodiments of the invention are in the dependent claims
- the hub is shortened on its inflow side in the circumferential direction in each case between the blade roots of the adjacent fan blades via peripheral recesses with respect to their axial hub length.
- Concentrically curved hub rim sections with continuous, edge-free transitions to those in FIG. 2 are preferably formed by the recesses of the hub between the blade roots
- the invention formed on the inflow side edge of the hub
- Recesses are expediently designed so that in operation, with rotation of the axial fan wheel by eliminating or minimizing disturbing
- Fan blades can flow around. As a result of the recesses according to the invention, it is possible to achieve a fan wheel throughflow optimized in particular with regard to the air output.
- Fig. 1 is an axial plan view of the front inflow side of a
- Axialventilatorrades invention (view in the direction of arrow I of FIG. 2)
- FIG. 1 side view in the direction of arrow II of FIG. 1, 3 is a perspective view of the Axialventilatorrades according to FIGS. 1 and 2 obliquely from the rear in the direction of the outflow side,
- Fig. 4 is a perspective view similar to FIG. 3, but in the mounted on a
- Fig. 5 is a side view similar to FIG. 2 in the assembled state of FIG. 4 and
- Fig. 6 is a perspective view of Fig. 4 and 5 obliquely from the front in the direction of the inflow side.
- An inventive Axialventilatorrad 1 consists of a wheel body 2, which in turn consists of a tubular, hollow cylindrical hub 4 and a plurality of circumferentially distributed, with the outer peripheral surface of the hub 4th
- Blades 6 are inclined or curved in particular in the direction of rotation, but may also be inclined backwards or curved. In the illustrated
- Embodiment the fan wheel 1 on seven fan blades 6.
- the fan blades 6 can evenly with each equal angular intervals or - for the purpose of a "natural balancing" - uneven with unequal
- Each fan blade 6 extends axially and circumferentially obliquely in the region of a blade root 8 connected to the hub 4, in particular with a specific curvature, between an inflow side 10 and an outflow side 12 of the hub 4 or of the
- Fan wheel 1 The term "obliquely” hereby also includes a specific course of curvature, see, for example, FIG. 3. As a result of this inclination, inclination or curvature of the fan blades 6, a rotation in FIGS illustrated air flow as the main flow from the inflow side 10 to the outflow side 12.
- the inflow side 10 is also referred to as the suction side and the outflow side 12 as the pressure side.
- Recesses 16 can thus be achieved an optimized fan wheel flow. This has a positive influence on the air performance.
- the Axialventilatorrad 1 is mounted on a rotating part.
- an annular disc 20 is fixed, with which the wheel body 2 on the rotating part, according to FIG. 4 to 6 in particular to a cylindrical
- the openings 26 form cooling channels which connect two annular gap regions formed axially on both sides of the round plate 20 and radially between the hub 4 and the rotor 22 in such a way that the rotor 22 rotates from the pressure side, that is the outflow side 12 Suction side, which is the inflow side 10, flows around the cooling air and thereby the motor 24 is cooled effectively.
- the openings 26 also allow drainage of condensables that may form in certain applications and under certain operating conditions.
- the wheel body 2 is formed with the hub 4 and the fan blades 6 in particular made of plastic as a one-piece molding.
- the blank 20 is at least partially made of metal, for example of a metal-coated with plastic sheet metal.
- the circular blank 20 has first and second surface sections arranged alternately in the circumferential direction on its inner circumference, the first surface sections having a first , larger inner diameter and the second surface portions define a second, smaller inner diameter.
- the smaller inner diameter of the second surface portions is designed such that in this area when pressing the frictional mounting on the rotor 22 is effected.
- Ronde is a segmented Ronde, wherein the inner peripheral surface is divided into said sections with different inner diameters.
- the smaller diameter portions are widened during the pressing operation, while the larger diameter portions do not or only insignificantly change their radial position during the pressing operation, but advantageously bring about a reduction in the mean level of the mechanical tension values.
- the blank 20 can be molded directly into the material during the injection process of the wheel body 2 cohesively and optionally additionally encapsulated in plastic.
- Axialventilatorrades 1 reached. The biggest effects occur with short motor sizes, ie. H. at low axial length. Also for applications without the
- Cooling flow is a significant advantage due to the selected hub geometry, because the main flow in the hub area causes significantly lower vortices on the hub by avoiding or eliminating impurities.
- 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.
Abstract
Description
Claims
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/EP2011/068630 WO2013060358A1 (de) | 2011-10-25 | 2011-10-25 | Axialventilatorrad |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2771581A1 true EP2771581A1 (de) | 2014-09-03 |
EP2771581B1 EP2771581B1 (de) | 2018-12-26 |
Family
ID=45688098
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11773290.9A Active EP2771581B1 (de) | 2011-10-25 | 2011-10-25 | Axialventilatorrad |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP2771581B1 (de) |
WO (1) | WO2013060358A1 (de) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
USD938011S1 (en) | 2019-12-10 | 2021-12-07 | Regal Beloit America, Inc. | Fan blade |
USD938009S1 (en) | 2019-12-10 | 2021-12-07 | Regal Beloit America, Inc. | Fan hub |
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 |
US11371517B2 (en) | 2019-12-10 | 2022-06-28 | Regal Beloit America, Inc. | Hub inlet surface for an electric motor assembly |
US11555508B2 (en) | 2019-12-10 | 2023-01-17 | Regal Beloit America, Inc. | Fan shroud for an electric motor assembly |
US11859634B2 (en) | 2019-12-10 | 2024-01-02 | Regal Beloit America, Inc. | Fan hub configuration for an electric motor assembly |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2018017167A (ja) * | 2016-07-27 | 2018-02-01 | 日本電産株式会社 | インペラおよびモータ |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE50110684D1 (de) * | 2001-01-02 | 2006-09-21 | Behr Gmbh & Co Kg | Lüfter mit Axialschlaufen |
ITBO20010485A1 (it) * | 2001-07-27 | 2003-01-27 | Spal Srl | Unita' di ventilazione |
US20030138324A1 (en) * | 2002-01-24 | 2003-07-24 | Hsieh Hsin-Mao | Cooling fan |
DE102004017727A1 (de) * | 2003-04-19 | 2004-11-04 | Ebm-Papst St. Georgen Gmbh & Co. Kg | Lüfter |
DE202004010088U1 (de) | 2004-06-25 | 2004-09-09 | Ebm-Papst Mulfingen Gmbh & Co. Kg | Laufrad, insbesondere für einen Axialventilator |
TWI370876B (en) * | 2006-01-23 | 2012-08-21 | Delta Electronics Inc | Fan and impeller thereof |
-
2011
- 2011-10-25 WO PCT/EP2011/068630 patent/WO2013060358A1/de active Application Filing
- 2011-10-25 EP EP11773290.9A patent/EP2771581B1/de active Active
Non-Patent Citations (1)
Title |
---|
See references of WO2013060358A1 * |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
USD938011S1 (en) | 2019-12-10 | 2021-12-07 | Regal Beloit America, Inc. | Fan blade |
USD938009S1 (en) | 2019-12-10 | 2021-12-07 | Regal Beloit America, Inc. | Fan hub |
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 |
US11371517B2 (en) | 2019-12-10 | 2022-06-28 | Regal Beloit America, Inc. | Hub inlet surface for an electric motor assembly |
US11555508B2 (en) | 2019-12-10 | 2023-01-17 | Regal Beloit America, Inc. | Fan shroud for an electric motor assembly |
USD1002834S1 (en) | 2019-12-10 | 2023-10-24 | 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 |
Also Published As
Publication number | Publication date |
---|---|
WO2013060358A1 (de) | 2013-05-02 |
EP2771581B1 (de) | 2018-12-26 |
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