EP3568598A1 - Lüfterrad mit vordefinierter abströmrichtung - Google Patents
Lüfterrad mit vordefinierter abströmrichtungInfo
- Publication number
- EP3568598A1 EP3568598A1 EP18700576.4A EP18700576A EP3568598A1 EP 3568598 A1 EP3568598 A1 EP 3568598A1 EP 18700576 A EP18700576 A EP 18700576A EP 3568598 A1 EP3568598 A1 EP 3568598A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- angle
- disc
- cover
- fan
- outer diameter
- 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
- 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
- F04D29/442—Fluid-guiding means, e.g. diffusers especially adapted for elastic fluid pumps rotating diffusers
-
- 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
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/666—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by means of rotor construction or layout, e.g. unequal distribution of blades or vanes
Definitions
- the invention relates to a fan with a predefined outflow direction, in particular for use in a fan.
- Generic fan wheels are known from the prior art, for example from the disclosure of DE 20 2015 106 910 U1.
- the invention is in the light of the known embodiments, the task of minimizing design-related influences on the noise behavior and / or the aerodynamic efficiency when installed in equipment and the cost of production. This object is achieved by the feature combination according to claim 1.
- a fan wheel with a bottom disk and a cover disk which has an axial inlet opening, and a blade ring arranged between the bottom disk and the cover disk and formed from fan blades for conveying a pumped medium.
- the bottom disk has a bottom disk edge portion which projects radially beyond an outer edge of the blade ring adjacent to the bottom disk.
- the cover disk comprises a cover disk edge portion which projects radially beyond an outer edge of the blade ring adjacent to the cover disk.
- the bottom disk edge portion is opposite to a continuous extension of a radially inwardly immediately adjacent portion of the bottom disk by an angle a
- the cover disk edge portion is inclined to a continuous extension of a radially inwardly immediately adjacent portion of the cover plate by an angle ß in an axial direction, wherein the Angle ⁇ and ⁇ in a value range of - ⁇ / 2 ⁇ , ⁇ ⁇ / 2 are, so that a deviating from a radial outflow flow direction of the pumped medium is adjustable.
- the angles .alpha. And .beta. Are measured positively in a counterclockwise direction as compared to the continuous extension of the bottom disk or cover disk, as is also apparent from the figures described below.
- the teaching according to the invention recognizes that by suitable embodiments of the angular amounts of ⁇ and ⁇ , it is possible to set a flow direction of the conveyed medium deviating from the essentially radial, such that, in particular, deteriorating influences on the noise behavior and / or minimizing the aerodynamic efficiency of installing centrifugal fans in equipment.
- the fan blades are curved backwards in the direction of travel.
- the angle ⁇ lies in a value range of - ⁇ / 2 ⁇ ⁇ 0, more preferably in a value range of - ⁇ / 4 ⁇ ⁇ - ⁇ / 40.
- the angle ⁇ is preferably in a value range of 0 ⁇ ⁇ / 2, more preferably in a value range of ⁇ / 40 ⁇ ⁇ / 4.
- the second portion forms the radially outer portion.
- an embodiment is advantageous in which a transition between the first and second portion of the bottom disk edge portion is formed continuously and without kink.
- an embodiment is advantageous in which a transition between the first and second portions of the cover plate edge portion is formed continuously and without kink.
- an outer diameter of the bottom disc D B s is greater than an outer diameter of the cover disc DOS to an alternative solution has an outer diameter of the cover disc DDS is larger than an outer diameter of the bottom disc Des
- the angle ⁇ and / or the angle ⁇ along an impeller circumference is / are inconstant.
- the outer diameter of the bottom disk D B s and / or the outer diameter of the cover disk Dos is inconsistent along an impeller circumference.
- the outer diameter of the bottom disk D B s and / or the outer diameter of the cover disk Dos deviate in terms of amount by at least 1%, more preferably at least 3%, from a respective circumferential mean value at at least one circumferential position.
- impeller blades of the blade ring have a flow-optimized profile shape in cross-section.
- All disclosed features have a favorable effect on the problem to be solved and make it possible to adapt the outflow to improve the noise behavior and / or the efficiency when installed and / or to reduce the costs for production.
- Fig. 1 is an upper half of a side sectional view of a
- Fig. 2 is an upper half of a side sectional view of a
- FIG. 1 the upper half of a rotationally symmetrical about the rotation axis R fan wheel 1 is shown in a lateral cross-section.
- the fan wheel 1 comprises a bottom disk 3, a cover disk 2 with an axia len inlet opening and a disposed between the bottom plate 3 and the cover plate 2 and formed from fan blades 4 blade ring for conveying a pumped medium.
- the Lüfterradschaufeln 4 connect the cover plate 2 and the bottom plate 3 and extend with seen in cross-section flow-optimized profile shape radially outward.
- the bottom disk 3 has a bottom disk edge portion 6 which projects radially beyond the outer edge 7 of the blade ring adjacent to the bottom disk 3 and the cover disk 2 has a cover disk edge portion 5 which projects radially beyond the outer edge 8 of the blade ring adjacent to the cover disk 2.
- the bottom disk edge portion 6 and the cover disk edge portion 5 form a diffuser.
- the cover plate 2 extends in the remaining section substantially rectilinear, the bottom plate 3 swung.
- the outer diameter of the cover disk D D s is greater than the outer diameter of the bottom disk Des-
- the outer diameter Ds C h2 of the blade ring at the outer edge 8 in the region of the cover plate 2 is greater than the outer diameter D sc hi of the blade ring at the outer edge 7 in the region of the bottom disk 3.
- the Lüfterradschaufeln 4 are seen in the direction of backward curved.
- FIG. 2 An alternative embodiment is shown in FIG. 2, wherein the features identical to FIG. 1 are not described again, but also apply in full to FIG. According to FIG.
- the bottom disk edge section 6 is subdivided into two subsections, the first radially inner section 13 being at an angle a1 with respect to the continuous extension 10 and the radial section extending radially with respect to the first section 13.
- a1 with respect to the continuous extension 10
- a2 relative to the continuous extension 18 of the first portion 13
- the cover plate edge portion 5 is divided into two subsections, wherein the first radially inner portion 15 at an angle ß1 relative to the continuous extension 11 and to the first portion 15 radially outwardly adjacent second portion 16 at an angle ß2 relative to the continuous extension 17 of first section 15 is inclined.
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 |
|---|---|---|---|
| DE102017100684.2A DE102017100684A1 (de) | 2017-01-16 | 2017-01-16 | Lüfterrad mit vordefinierter Abströmrichtung |
| PCT/EP2018/050887 WO2018130690A1 (de) | 2017-01-16 | 2018-01-15 | Lüfterrad mit vordefinierter abströmrichtung |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3568598A1 true EP3568598A1 (de) | 2019-11-20 |
| EP3568598B1 EP3568598B1 (de) | 2023-04-12 |
Family
ID=59867950
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP18700576.4A Active EP3568598B1 (de) | 2017-01-16 | 2018-01-15 | Lüfterrad mit vordefinierter abströmrichtung |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP3568598B1 (de) |
| CN (1) | CN206513622U (de) |
| DE (1) | DE102017100684A1 (de) |
| WO (1) | WO2018130690A1 (de) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019144736A1 (zh) * | 2018-01-29 | 2019-08-01 | 美的集团股份有限公司 | 叶轮、风机组件以及电器 |
| WO2020152748A1 (ja) * | 2019-01-21 | 2020-07-30 | 三菱電機株式会社 | 送風機、室内機および空気調和機 |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1538920A1 (de) * | 1966-11-04 | 1970-04-23 | Licentia Gmbh | Radialinnenluefter fuer geschlossene elektrische Maschine |
| DD273479B5 (de) * | 1988-06-29 | 1994-10-20 | Inst Luft Kaeltetech Gem Gmbh | Ventilatorlaufrad |
| DE20303443U1 (de) * | 2003-03-04 | 2003-07-24 | Ziehl-Abegg AG, 74653 Künzelsau | Radiallüfterrad |
| JP4502057B2 (ja) * | 2008-09-29 | 2010-07-14 | ダイキン工業株式会社 | 床置型空気調和機の室内機 |
| DE202011003839U1 (de) * | 2011-03-11 | 2011-06-09 | Ziehl-Abegg AG, 74653 | Lüfterrad |
| KR20140131750A (ko) * | 2013-05-06 | 2014-11-14 | 엘지전자 주식회사 | 원심팬 |
| DE202015106910U1 (de) | 2015-12-17 | 2016-01-14 | Ebm-Papst Mulfingen Gmbh & Co. Kg | Kantenberandung eines Rotationselements und Gebläserad |
-
2017
- 2017-01-16 DE DE102017100684.2A patent/DE102017100684A1/de not_active Withdrawn
- 2017-02-21 CN CN201720155513.9U patent/CN206513622U/zh active Active
-
2018
- 2018-01-15 EP EP18700576.4A patent/EP3568598B1/de active Active
- 2018-01-15 WO PCT/EP2018/050887 patent/WO2018130690A1/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| DE102017100684A1 (de) | 2018-07-19 |
| WO2018130690A1 (de) | 2018-07-19 |
| EP3568598B1 (de) | 2023-04-12 |
| CN206513622U (zh) | 2017-09-22 |
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