EP3256732A1 - Ventilatorrad und ventilator - Google Patents
Ventilatorrad und ventilatorInfo
- Publication number
- EP3256732A1 EP3256732A1 EP15830788.4A EP15830788A EP3256732A1 EP 3256732 A1 EP3256732 A1 EP 3256732A1 EP 15830788 A EP15830788 A EP 15830788A EP 3256732 A1 EP3256732 A1 EP 3256732A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fan wheel
- fan
- axial
- radial
- wheel according
- 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
- F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
- F04D29/30—Vanes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
- F04D17/08—Centrifugal pumps
- F04D17/16—Centrifugal pumps for displacing without appreciable compression
-
- 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
- F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
- F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
-
- 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
- F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
- F04D29/288—Part of the wheel having an ejecting effect, e.g. being bladeless diffuser
-
- 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
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/44—Fluid-guiding means, e.g. diffusers
- F04D29/441—Fluid-guiding means, e.g. diffusers especially adapted for elastic fluid pumps
-
- 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
-
- 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
- F05D2250/00—Geometry
- F05D2250/10—Two-dimensional
- F05D2250/14—Two-dimensional elliptical
Definitions
- the invention relates to a fan wheel designed as a radial fan or Diagonalventilatorrad and a fan in which a corresponding fan wheel is installed.
- centrifugal fan wheels are preferably used in volume flow guiding elements (eg air handling units) in the field of ventilation and ventilation Air conditioning used. Normally, the characteristics of the
- a fan wheel which is designed as a radial fan or Diagonalventilatorrad and has a bottom disc on which is distributed around an axial axis of rotation a plurality of fan blades is arranged, whose axial height extent between the suction side and the bottom disc.
- the bottom disk has a circumferential radial outer edge portion which, viewed in cross-section, extends in an arc-shaped manner at least in sections and thereby forms a circumferential elliptical transition of the bottom disk from a radial extent into an axial extent.
- the axial extent runs parallel to the axis of rotation of the fan wheel on one side of the floor. the disc, which lies opposite the fan blades.
- the elliptical arc shape of the radially outer edge portion causes a reduction up to the elimination of the losses caused by the installation in a volume-conducting element.
- the efficiency is over those known from the prior art
- Radial fan wheels improved by at least 0.1. This has been confirmed in several measurements, as described in more detail below.
- the cross-sectionally elliptical transition of the circumferential radial outer edge portion is determined by a longer and a shorter half-axis length.
- the half-axis length ratio a / b is in a range of 1-10, preferably 2-5, where "a" is a semiaxis length in the radial direction and "b" is a Half-axis length in the axial direction of the Ventila- tor corresponds.
- the fan blades arranged or formed on the bottom disk each have a radial outer edge which in each case forms a transition point on one side with the bottom disk.
- An imaginary ring connecting the transition points in the circumferential direction forms a boundary line adjoining the elliptical transition of the bottom disk in the radial direction directly or at a distance, i. the bottom disc extends radially beyond the fan blades, forming the elliptical transition.
- the flow can thus flow unaffected by the fan blades along the bottom disk, and then be guided in the radial outer region of the elliptical transition with respect to the further flow direction.
- the bottom disc is formed in one embodiment with an axial extension that abuts then integrally extending the elliptical transition in the axial direction and provides a further guidance for the air flow.
- the bottom disk has an axial circumferential step in the center region extending radially outside the axis of rotation.
- This step is formed as a kind of bending of the bottom disk and places the parts of the bottom disk lying in the center area on a parallel axial plane.
- the step or fold increases the rigidity of the bottom plate and thus the fan wheel. In combination with the elliptical transition, the effect is enhanced.
- it is additionally achieved by the step or bending in an axial direction away from the fan blades that the rotor of an electric motor to be fixed in the center region of the bottom disk projects less far in the direction of the fan blades.
- a hub is formed on the bottom plate for this purpose, which adjoins the step in the direction of the axis of rotation in the center.
- the axial step or bevel of the bottom disk seen in cross-section is substantially Z-shaped with a partially extending in the radial and axial directions, i. formed obliquely to the axis of rotation extending ridge.
- the oblique circumferential web of the bottom disk connecting the straight upper and lower legs of the "Z" in this case preferably extends at an angle ⁇ of 20-60 DEG from the radial direction of the ventilator wheel.
- the step or fold has, in a favorable embodiment, an axial height Z which corresponds to + 20% of the semiaxis length b of the elliptical transition in the axial direction. This causes the elliptical Transition with the step particularly effective to promote the rigidity of the bottom disc and the fan wheel together.
- the fan wheel has a cover disk which lies opposite the bottom disk and which at least partially covers the fan disk on the suction side, which forms an inlet opening around the axis of rotation in the center.
- the fan blades are not completely covered by the cover disk along their upper edges pointing toward the suction side; rather, in one exemplary embodiment, they each have an edge section facing the suction side, which runs separately from the cover disk in order to improve the guided flow.
- the cover disc and the bottom disc have substantially the same outer diameter. It is provided as a possible variant of the invention that an envelope around the fan blades in the circumferential direction envelope with respect to a radial extent of the bottom disc at an oblique angle (ß) of 60 - 80 runs, ie in a lateral section, the fan blades extend obliquely with respect to an axial plane the fan wheel and pointing in the direction of the axis of rotation of the bottom disc.
- a size ratio of the bottom disk has been found to be effective, in which the ratio d / h, ie the outer diameter d of the bottom disk and the overall axial height h, is set in a range of 20-25.
- the ratio d / a of the outer diameter d of the bottom disk to the half-axis length a of the elliptical transition is in a range of 10-15, preferably 11-12, and the ratio d / b of the outer diameter d of the bottom disk the half-axis length b of the elliptical transition in a range of 28-38, preferably 30-34.
- the disc-specific inlet opening has a diameter sd which, in relation to the semiaxis length b of the elliptical transition, has a value sd / b in a range of 15-25, in particular 18-21, and in relation to the semiaxis length a of the elliptic Transition a value sd / a in a range of 5 - 8, in particular 6 - 7 is set.
- the invention further comprises a fan with a Venfilatorrad described above, which is arranged in a volume flow-conducting component having a preferably square flow cross-section with an edge length G.
- the ratio of the edge length G to the outside diameter D of the fan wheel is in a range of 1.1 to 3.0, preferably 1.5 - 2.5 set. All disclosed features of the fan wheel can be combined as desired, as far as this is technically possible.
- Fig. 1 is a side sectional view of a fan wheel
- Figure 2 is a schematic representation of a fan in a volume flow-conducting element.
- FIG. 3 shows a representation of the flow in a volume-flow-conducting element
- FIG. 4 is a representation of the flow in a chamber test.
- FIG. 1 shows a side sectional view of a radial fan wheel 1 with a bottom disk 2 and a cover disk 13 provided on the suction side 4 and forming an air inlet opening 14, between which a plurality of fan blades 3 arranged distributed around the axial rotation axis are provided.
- the fan blades 3 extend radially and partially diagonally outward on the bottom disk 2 from a central region 10 'and form a radial air outlet region on their radial outer edge 8.
- the fan blades 3 are curved in each case in such a way that they arc-shaped in a plan view and have an upper edge section 15 which is exposed from the cover plate 3 in a region facing the axial center.
- the radial outer edges 8 of the fan blades 3 end on the bottom plate 2 each at a transition point 9.
- the axial oblique extension of the outer edges 8 of the fan blades 3 from the bottom plate 2 to the cover plate 3 is carried out in the embodiment shown with an angle ß of about 70 degrees, wherein the fan blades 3 with the cover plate 13 form a substantially flush radially outer edge termination.
- an imaginary boundary line forms, to which the elliptical transition 6 of the bottom disk 2 adjoins in the radial direction directly or as closely spaced as in the embodiment shown.
- the starting point of the elliptical transition 6 in the radial direction is defined as the beginning of the curvature of the bottom disk 2 in the axial direction.
- the bottom disk 2 has a circumferential radial outer edge section 5, which, viewed in the lateral cross-section shown extends arcuately and thereby forms the elliptical transition 6 of the bottom disk 2 from its radial extent outward in an axial extension to a fan blades 3 opposite side.
- the elliptical Transition 6 is determined by the half-axis lengths a and b, whose ratio a / b assumes a value of about 3.0 in the embodiment shown.
- a central opening 19 is provided in a center 10 about the axis of rotation, at the radially outer edge of the hub 12 is formed.
- the bottom disk 2 has an axial, essentially Z-shaped step 11, wherein the oblique circumferential web 2 of the "Z" extending partially in the radial and partially in the axial direction Radial direction of the fan wheel 1, that is, a plane parallel to the bottom plate 2, at an angle ⁇ of approximately 40 DEG
- the step 11 has, in the illustrated embodiment, an axial height Z which is approximately 15% greater than that Half-axis length b of the elliptical transition 6 in the axial direction
- the ratio d / h between the outer diameter d of the bottom plate 2 and its axial total height h is set to a value of about 23 in the embodiment shown.
- FIG. 2 shows a schematic representation of a fan 20 with the fan wheel 1 in a state installed centrally with respect to the axis of a volume-flow-conducting element 21.
- the volume-flow-conducting element 21 has in the embodiment shown a square cross-section with an edge length G which is larger by a factor of 1, 3 than the outer diameter D of the fan wheel 1.
- the structure shown in Figure 2 corresponds to a real installation situation of the fan 20 and the fan wheel 1.
- This is a flow 16 generated with a course, as shown in Figure 3.
- the air is initially blown radially out of the fan wheel 1.
- the essential part of the flow 16 sets in the axial direction on the inner wall of the volume-current-conducting element 21 and has thereby completed a change in direction from radial to axial.
- the flow 26 reached in chamber test stands is applied to a wall 31 which continues in the radial direction of the fan wheel 1, as shown by way of example in FIG. A diversion does not take place.
- the invention is not limited in its execution to the above-mentioned preferred embodiments.
- the axial extension 7 may also be formed obliquely or arcuately.
- a change in the material thickness of the bottom plate, for example with a taper in the direction of the axial extension, are provided.
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 |
|---|---|---|---|
| DE102015101938.8A DE102015101938A1 (de) | 2015-02-11 | 2015-02-11 | Ventilatorrad und Ventilator |
| PCT/EP2015/081392 WO2016128099A1 (de) | 2015-02-11 | 2015-12-30 | Ventilatorrad und ventilator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3256732A1 true EP3256732A1 (de) | 2017-12-20 |
| EP3256732B1 EP3256732B1 (de) | 2019-10-02 |
Family
ID=54523876
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP15830788.4A Active EP3256732B1 (de) | 2015-02-11 | 2015-12-30 | Ventilatorrad und ventilator |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US10590949B2 (de) |
| EP (1) | EP3256732B1 (de) |
| CN (1) | CN204783820U (de) |
| DE (1) | DE102015101938A1 (de) |
| DK (1) | DK3256732T3 (de) |
| WO (1) | WO2016128099A1 (de) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105822567B (zh) * | 2016-04-08 | 2018-12-14 | 重庆通用工业(集团)有限责任公司 | 干熄焦循环风机模型 |
| USD949315S1 (en) | 2016-06-24 | 2022-04-19 | Ebm-Papst Mulfingen Gmbh & Co. Kg | Vane damper with trailing edge |
| DE102016111830A1 (de) * | 2016-06-28 | 2017-12-28 | Ebm-Papst Mulfingen Gmbh & Co. Kg | Gebläseradscheibe und Gebläserad |
| CN112253536A (zh) * | 2020-10-30 | 2021-01-22 | 浙江科贸智能机电股份有限公司 | 一种离心叶轮及其通风机 |
| DE102021204491A1 (de) * | 2021-05-04 | 2022-11-10 | Ziehl-Abegg Se | Ventilator, insbesondere Radial- oder Diagonalventilator |
Family Cites Families (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB191018349A (en) * | 1910-08-03 | 1911-06-01 | Siemens Brothers Dynamo Works | Improvements in Centrifugal Fans. |
| GB191418349A (en) | 1914-08-07 | 1915-08-09 | Bradbury And Company Ltd | Improvements in Front Wheel Brakes for Motor Cycles. |
| DE3842697A1 (de) * | 1988-12-19 | 1990-06-21 | Standard Elektrik Lorenz Ag | Hochdruck-geblaese |
| US5336050A (en) * | 1993-05-06 | 1994-08-09 | Penn Ventilator Co. Inc. | Ventilator fan device |
| DE4427115C1 (de) * | 1994-07-30 | 1995-04-06 | Braun Ag | Laufrad für ein Radialgebläse |
| US6039111A (en) * | 1997-02-14 | 2000-03-21 | Denso Corporation | Cooling device boiling and condensing refrigerant |
| JP3505066B2 (ja) * | 1997-06-20 | 2004-03-08 | 株式会社日立産機システム | 空気清浄装置 |
| JP3675115B2 (ja) * | 1997-07-11 | 2005-07-27 | 株式会社日立製作所 | 電動送風機及びこの電動送風機に用いる羽根車の製造方法 |
| JP4185654B2 (ja) * | 2000-08-04 | 2008-11-26 | カルソニックカンセイ株式会社 | 遠心式の多翼送風機 |
| DE20018770U1 (de) | 2000-11-03 | 2001-05-10 | Becker, Wilhelm, 52072 Aachen | Gestell zur Halterung eines Bedienelements für ein elektronisches Spiel oder einen Computer |
| JP2002168507A (ja) * | 2000-11-30 | 2002-06-14 | Mirai Ind Co Ltd | 換気ルーバー |
| KR100405981B1 (ko) * | 2001-02-12 | 2003-11-14 | 엘지전자 주식회사 | 천정형 공조기의 터보팬 구조 |
| US6848887B2 (en) * | 2001-08-23 | 2005-02-01 | Lg Electronics Inc. | Turbofan and mold thereof |
| AU2003284610B2 (en) * | 2002-12-16 | 2006-11-16 | Daikin Industries, Ltd. | Centrifugal fan, and air conditioner provided therewith |
| KR20040104772A (ko) * | 2003-06-03 | 2004-12-13 | 삼성전자주식회사 | 터보팬 및 이를 갖춘 공기조화기 |
| JP3972894B2 (ja) * | 2003-11-27 | 2007-09-05 | ダイキン工業株式会社 | 空気調和装置 |
| JP2007002708A (ja) * | 2005-06-23 | 2007-01-11 | Fujitsu General Ltd | ターボファン |
| US8225623B2 (en) * | 2007-03-14 | 2012-07-24 | Mitsubishi Electric Corporation | Centrifugal fan, air conditioner |
| JP4396775B2 (ja) * | 2007-11-26 | 2010-01-13 | ダイキン工業株式会社 | 遠心ファン |
| JP5164932B2 (ja) * | 2009-06-11 | 2013-03-21 | 三菱電機株式会社 | ターボファンおよび空気調和機 |
| JP2011163690A (ja) | 2010-02-12 | 2011-08-25 | Hitachi Appliances Inc | 室内機及び空気調和機 |
| DE102010009566A1 (de) | 2010-02-26 | 2011-09-01 | Ebm-Papst Mulfingen Gmbh & Co. Kg | Radial- oder Diagonal-Ventilatorrad |
| WO2014182121A1 (ko) * | 2013-05-10 | 2014-11-13 | 엘지전자 주식회사 | 원심팬 및 원심팬의 제조방법 |
-
2015
- 2015-02-11 DE DE102015101938.8A patent/DE102015101938A1/de not_active Withdrawn
- 2015-06-23 CN CN201520434862.5U patent/CN204783820U/zh not_active Expired - Lifetime
- 2015-12-30 WO PCT/EP2015/081392 patent/WO2016128099A1/de not_active Ceased
- 2015-12-30 US US15/549,410 patent/US10590949B2/en active Active
- 2015-12-30 DK DK15830788.4T patent/DK3256732T3/da active
- 2015-12-30 EP EP15830788.4A patent/EP3256732B1/de active Active
Also Published As
| Publication number | Publication date |
|---|---|
| EP3256732B1 (de) | 2019-10-02 |
| DK3256732T3 (da) | 2019-12-16 |
| DE102015101938A1 (de) | 2016-08-11 |
| US10590949B2 (en) | 2020-03-17 |
| CN204783820U (zh) | 2015-11-18 |
| WO2016128099A1 (de) | 2016-08-18 |
| US20180030994A1 (en) | 2018-02-01 |
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