WO2015000676A1 - Nabenerweiterungselement für einen lüfter - Google Patents
Nabenerweiterungselement für einen lüfter Download PDFInfo
- Publication number
- WO2015000676A1 WO2015000676A1 PCT/EP2014/062406 EP2014062406W WO2015000676A1 WO 2015000676 A1 WO2015000676 A1 WO 2015000676A1 EP 2014062406 W EP2014062406 W EP 2014062406W WO 2015000676 A1 WO2015000676 A1 WO 2015000676A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- fan
- hub
- hub extension
- fan blades
- extension element
- Prior art date
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
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/64—Mounting; Assembling; Disassembling of axial pumps
- F04D29/644—Mounting; Assembling; Disassembling of axial pumps especially adapted for elastic fluid pumps
- F04D29/646—Mounting or removal of 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
- 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
Definitions
- the invention relates to a hub extension element for a fan with a fan wheel, which has a hub provided with a plurality of fan blades.
- a fan If such a fan is used as a device fan and is accordingly installed in an associated device with given aerodynamic conditions, the fan in the device must work against a flow resistance and for this purpose generate a differential pressure so as to drive the flow through the device.
- the relationship between differential pressure and flow rate at a given fan is mapped by the fan characteristic.
- the preferred operating ranges of the fan are characterized by the course of efficiency and the noise at different throttling, this is the so-called working range.
- a device characteristic or system impedance can be specified for the assigned device, which represents the ratio of the desired volume flow and the pressure increase required for a corresponding air flow through this device. If the
- the operating point of the fan is moved accordingly.
- the shifted operating point may be outside the optimum operating range of the fan, so that the
- the hub extension element makes it possible to adapt and improve the aerodynamic properties of a fan to the conditions of an associated device, so that one and the same fan can be installed in a plurality of different devices and there each with optimum efficiency and reduced noise is operational. Thus, development and in particular manufacturing costs of the fan can be reduced and thus made economically useful.
- Fig. 1 is a plan view of an underside of a fan housing
- Fig. 2 is a perspective view of the fan of Fig. 1 with a
- FIG. 3 is an exploded perspective view of the arrangement of Fig. 2
- FIG. 4 shows exemplary fan and system impedance characteristics for the fan of FIG. 1 in operation with and without the hub extension member of FIGS. 2 and 3
- FIG. 4 shows exemplary fan and system impedance characteristics for the fan of FIG. 1 in operation with and without the hub extension member of FIGS. 2 and 3
- Fig. 5 shows a fan with a mounted hub extension element.
- left, right, up and down refer to the respective drawing figure and depending on a selected orientation (portrait or landscape) of a
- Fig. 1 shows a plan view of an underside of a fan 100, which
- the fan 100 is used as a device fan and has a
- Fan housing 1 1 which can be uniformly formed of plastic or metal or any mixed form thereof.
- the fan housing 1 1 1 has in its interior about the shape of a cylindrical tube 121, at one axial end of a provided for mounting a drive motor 120 flange 1 15 is provided. In addition, a mounting flange 190 is provided at this axial end.
- the flange 1 15 is connected via a plurality of thin support webs, illustratively four webs 1 16, 1 17, 1 18, 1 19, with the fan housing 1 1 1 connected. This has preferably in corners of the mounting flange 190 or at least in its edge regions mounting holes 195, 196, 197, 198 to allow attachment of the fan housing 1 1 1 in an associated device.
- the drive motor 120 preferably has an outer rotor 122 and an inner stator 144 and serves to drive a fan wheel 200, of its configuration
- the fan characteristic (401 in Fig. 4) of the fan 100 depends, and which is fixedly connected to the outer rotor 122 and is rotatable about an associated axis of rotation.
- the impeller 200 is exemplified in the manner of an axial fan and has a hub 250 (see Fig. 3) on which a plurality of fan blades 240 are arranged, of which only two blades 242, 244 are provided for ease of drawing in Fig. 1 are shown.
- the shape of these fan blades 242, 244 is preferably adapted to the shape of the inside of the tube 121.
- the fan blades 242, 244 have a first side 11, cf. 2, and one of the first side 1 1 opposite second side 12th
- the fan housing 1 1 1 forms together with the hub 250 an annular air duct 123.
- Axial fan is limited with Axiallstageergann. Rather, others can
- Fan types such. B. Diagonal fan with DiagonallCSergan, apply.
- the motor type is not limited to external rotor motors with external rotors, but it can, for. also internal rotor motors with internal rotors or disc rotor
- the fan 100 is assigned a first fan characteristic curve (401 in FIG. 4) which is dependent on the design of the fan wheel 200.
- This first fan characteristic curve (401 in FIG. 4) can be achieved by a hub extension element according to the invention
- the hub extension member (210 in FIG. 2) is configured, in one embodiment, to provide, at least in a portion of the operating range of the fan 100, an axial velocity of a fluid to be delivered in the area around the plurality of fan blades 240 relative to a similar fan without the fan
- Hub extension element 210 d. H. the fan 100, and thus increase the achievable with the fan 200 overpressure generation.
- Fig. 2 shows the fan wheel 200 of Fig. 1 with the hub 250, on which the plurality of fan blades 240 of Fig. 1 is arranged, as well as a
- the plurality of fan blades 240 includes the fan blades 242, 244 of FIG. 1 and three further fan blades 243, 246, 248.
- the hub extension element 210 which may also be referred to as a characteristic change device, preferably has at least a first one
- Hub extension portion 270 which is arranged in the region of the hub 250 to cover the hub 250 facing radially inner region of the fan blades 242, 243, 244, 246, 248 and thereby cover this inner region of the fan blades 242, 243, 244, 246th , 248 at least partially disable ventilation technology, so in particular to reduce or completely prevent air flow in the radially inner region.
- the hub extension part 270 surrounds the plurality of fan blades 242, 243, 244, 246, 248 at least in sections.
- a plurality of recesses 271 for at least partially receiving the plurality of fan blades 240 is provided on the hub extension part 270.
- This plurality of recesses 271 includes by way of example five recesses 272, 273, 274, 276, 278 for receiving the five fan blades 242, 243, 244, 246 and 248, respectively.
- the axial surface of the hub 250 facing the hub extension 270 is shown dotted in FIG. 2 to facilitate understanding of the drawing, as well as in FIGS. 3 and 5. However, this does not imply that a corresponding pattern must actually be present.
- the hub extension element 210 has at least one second hub extension part 280, the structure of which is preferably the one above
- the hub extension part 280 has a plurality of
- Recesses 281 for at least partially receiving the plurality of fan blades 240 of which only three recesses 282, 286, 288 are visible here, which are provided by way of example for receiving the fan blades 242, 246 and 248, respectively.
- FIG. 5 shows the fan wheel 200 of FIG. 2 with the hub 250, on which the plurality of fan blades 240 are arranged, and with a hub extension element 210 a first boss widening part 270 and a second boss widening part 280 in the assembled state.
- the two hub extension parts 270, 280 are respectively arranged on the front side of the hub 250, the first hub extension part 270 in the region of a first axial end (290 in FIG. 3) of the hub 250 and the second hub extension part 280 in the region of a second axial end (201 in FIG Fig. 3) of the hub 250 is arranged.
- the hub extension part 270 is clockwise
- FIG. 3 shows the fan wheel 200 of FIGS. 1 and 2 and the hub extension part 210 of FIG. 2 to illustrate the arrangement of the first hub extension part 270 of FIG.
- FIG. 3 illustrates the plurality of FIGS
- Recesses 281 of the hub extension part 280 which are the three
- Recesses 282, 286, 288 of FIG. 2 and two further recesses 283, 284 have.
- hub extensions 270, 280 are disposed in the region of hub 250 about one of hub 250
- the hub extension parts 270, 280 are preferably annular and have an inner diameter 370 or 380, which is greater than or equal to the outer diameter 300 of the hub 250.
- Outer diameter of the hub extension parts 270, 280 thus corresponds to the sum of their inner diameter 370 or 380 and the predetermined value 375th
- FIG. 4 shows a diagram 400 with two fan characteristics 401, 402, each of which has a pressure increase in Pascal (PA) in FIG. 4
- the fan characteristic 402 represents a work area of the fan 100 of FIG. 1 provided with the hub extension portion 210 of FIGS. 2 and 3, and the fan characteristic 401 represents a corresponding operating range of the fan 100 of FIG.
- Hub extension member 210 wherein an optimum operating range of the fan 100 with and without the hub extension member 210 of Fig. 2 and Fig. 3 on the two fan characteristics 401, 402 illustratively in the range between two
- the second fan characteristic curve 402 is preferably designed to enable a realization of at least one operating point 490, which is not feasible with the first fan characteristic curve 401, wherein the at least one operating point 490 is preferably located in the optimum operating range.
- the hub extension element 210 of FIGS. 2 and 3 changes the fan characteristic curve 401 of the fan 100 of FIG. 1 into the fan characteristic curve 402, thus changing its operating range.
- Fan characteristics 401, 402 different work areas of two identical in itself fans, one of which by using the
- Hub extension element 210 of Fig. 2 and Fig. 3 has been modified.
- FIG. 1 The figures and the description show a hub extension element 270 for a fan 100 with a fan wheel 200 which, to generate a fluid flow, has a hub 250 and a plurality of fan blades 242 arranged on the hub,
- hub extension member comprises: an annular portion 270 'defining a first recess 270 "adapted to receive at least a portion of the hub 250, wherein in the annular portion 270' a plurality of second recesses 271, 281 is provided which are each adapted to receive a portion of one of the fan blades 242, 243, 244, 246, 248 to affect the characteristics of the fan 100.
- the second recesses 271, 281 are designed both to cover at least a partial area of the first side 11 and at least a partial area of the second side 12 of the fan blades 242, 243,
- the hub extension element is adapted to be mounted on the fan blades 242, 243, 244, 246, 248 of FIG
- the annular region 270 ' is designed for rotation about an axis of rotation, the second recesses 271, 281 extending at least partially obliquely to the axis of rotation.
- the hub extension element for a fan 100 with a fan wheel 200, the fan blades 242, 243, 244, 246, 248 have over their radial extent a radially inner half and a radially outer half, wherein the second recesses are each formed to receive a portion of one of the fan blades 242, 243, 244, 246, 248 disposed on the radially inner half of the fan blades 242, 243, 244, 246, 248.
- the hub extension element for a fan 100 which is associated with a fan housing 1 1 1, which together with the hub 250 defines an annular air channel 123, wherein the
- Hub extension element 270, 280 is adapted to the annular
- the hub extension member is adapted to form an enlarged hub with a hub having a hub with an enlarged hub, wherein the outer diameter of the enlarged hub is greater than the outer diameter of the hub.
- the hub extension member has a first hub extension 270 and a second hub extension 280, wherein the first hub extension 270 is adapted to be mounted from the first side 11 of the fan blades, and the second
- Hub extension part 280 is adapted to be mounted from the second side 12 of the fan blades forth.
- the first hub extension portion 270 and the second hub extension portion 280 are configured to completely enclose a portion of a fan blade.
- the hub extension element is designed, at least in a part of the working area of the fan 100, to control an axial velocity of a fluid to be delivered in the area around the fan blades 242, 243, 244, 246, 248 relative to an identical fan without the hub extension member 210 to increase.
- the hub extension element is designed to effect a second fan characteristic by arranging the hub extension element on the fan in the case of a fan having a first fan characteristic without the hub extension element, wherein the second fan characteristic is at least one size of the volume flow, ie a value of Volume flow, a greater pressure increase than the first fan characteristic.
- the hub extension element is connected to a fan 100, which fan has a fan wheel 200 with a hub 250 and a plurality of fan blades 242, 243, 244, 246, 248 arranged on the hub, the fan blades having a first side 11 and a second side 12 opposite the first side, wherein the first recess 270 "receives at least a portion of the hub 250, and wherein the second
- Recesses 271, 281 each have a portion of one of the fan blades 242, 243,
- Hub extension member a radially inner portion of the fan blades 242, 243, 244, 246, 248 at least partially and is adapted to reduce or completely prevent fluid flow at the radially inner portion of the fan blades.
- the hub extension member has a first hub extension 270 and a second hub extension 280, wherein the first hub extension 270 is adapted to be mounted from the first side 11 of the fan blades, and the second
- Hub extension part 280 is adapted to be mounted from the second side 12 of the fan blades, and in which the first
- Hub extension part 270 and the second hub extension part 280 to each other and / or to the hub 250 are attached.
- the first hub extension portion 270 and the second hub extension portion 270, 280 are secured to each other and / or to the hub 250 via a snap, weld, and / or glued connection.
- the fan wheel 200 is formed in the manner of an axial or diagonal fan.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE112014003156.9T DE112014003156A5 (de) | 2013-07-05 | 2014-06-13 | Nabenerweiterungselement für einen Lüfter |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102013107128.7 | 2013-07-05 | ||
DE201310107128 DE102013107128A1 (de) | 2013-07-05 | 2013-07-05 | Nabenerweiterungselement für einen Lüfter |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2015000676A1 true WO2015000676A1 (de) | 2015-01-08 |
Family
ID=50972692
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2014/062406 WO2015000676A1 (de) | 2013-07-05 | 2014-06-13 | Nabenerweiterungselement für einen lüfter |
Country Status (2)
Country | Link |
---|---|
DE (2) | DE102013107128A1 (de) |
WO (1) | WO2015000676A1 (de) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20150167692A1 (en) * | 2013-12-12 | 2015-06-18 | Ge Aviation Systems Llc | Fan assembly and fan hub cap |
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 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3508842A (en) * | 1968-10-08 | 1970-04-28 | Trane Co | Apparatus for improving axial velocity profile of axial flow fans |
EP0320926A1 (de) * | 1987-12-17 | 1989-06-21 | Klöckner-Humboldt-Deutz Aktiengesellschaft | Gebläse |
US20100074761A1 (en) * | 2008-09-18 | 2010-03-25 | Sheng-An Yang | Impeller assembly |
-
2013
- 2013-07-05 DE DE201310107128 patent/DE102013107128A1/de not_active Withdrawn
-
2014
- 2014-06-13 DE DE112014003156.9T patent/DE112014003156A5/de active Pending
- 2014-06-13 WO PCT/EP2014/062406 patent/WO2015000676A1/de active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3508842A (en) * | 1968-10-08 | 1970-04-28 | Trane Co | Apparatus for improving axial velocity profile of axial flow fans |
EP0320926A1 (de) * | 1987-12-17 | 1989-06-21 | Klöckner-Humboldt-Deutz Aktiengesellschaft | Gebläse |
US20100074761A1 (en) * | 2008-09-18 | 2010-03-25 | Sheng-An Yang | Impeller assembly |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20150167692A1 (en) * | 2013-12-12 | 2015-06-18 | Ge Aviation Systems Llc | Fan assembly and fan hub cap |
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 |
---|---|
DE112014003156A5 (de) | 2016-03-31 |
DE102013107128A1 (de) | 2015-01-08 |
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