EP3405679B1 - Diagonalventilator - Google Patents

Diagonalventilator Download PDF

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Publication number
EP3405679B1
EP3405679B1 EP17781458.9A EP17781458A EP3405679B1 EP 3405679 B1 EP3405679 B1 EP 3405679B1 EP 17781458 A EP17781458 A EP 17781458A EP 3405679 B1 EP3405679 B1 EP 3405679B1
Authority
EP
European Patent Office
Prior art keywords
impeller
diagonal fan
fan
rotor
diagonal
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.)
Active
Application number
EP17781458.9A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3405679A1 (de
Inventor
Daniel Gebert
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ebm Papst Mulfingen GmbH and Co KG
Original Assignee
Ebm Papst Mulfingen GmbH and Co KG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ebm Papst Mulfingen GmbH and Co KG filed Critical Ebm Papst Mulfingen GmbH and Co KG
Publication of EP3405679A1 publication Critical patent/EP3405679A1/de
Application granted granted Critical
Publication of EP3405679B1 publication Critical patent/EP3405679B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F04D17/165—Axial entry and discharge
    • 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
    • F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D25/0606—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump
    • F04D25/0613—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump the electric motor being of the inside-out type, i.e. the rotor is arranged radially outside a central stator
    • F04D25/064—Details of the rotor
    • 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
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D25/0606—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump
    • F04D25/0613—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump the electric motor being of the inside-out type, i.e. the rotor is arranged radially outside a central stator
    • F04D25/0646—Details of the stator
    • 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
    • F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
    • F04D29/4226—Fan casings
    • F04D29/4253—Fan casings with axial entry and discharge
    • 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
    • F04D29/444—Bladed 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2240/00—Components
    • F05B2240/10—Stators
    • F05B2240/12—Fluid guiding means, e.g. vanes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2240/00—Components
    • F05B2240/10—Stators
    • F05B2240/14—Casings, housings, nacelles, gondels or the like, protecting or supporting assemblies there within
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2260/00—Function
    • F05B2260/96—Preventing, counteracting or reducing vibration or noise
    • 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
    • F05D2250/50—Inlet or outlet
    • F05D2250/52—Outlet

Definitions

  • the invention relates to a diagonal fan of improved compact design with high power density and low noise development.
  • Diagonal fans and their use are generally known from the prior art, for example from DE 10 2014 210 373 A1 . Further printed prior art from the present technical field is from the publications DE 10 2004 058 003 A1 and U.S. 2009/246017 A1 known.
  • Diagonal fans are used in applications with high demands Air capacity used with higher back pressure and little installation space, for example in cooling technology or in extractor hoods. Due to the large motor diameter of the axially centrally arranged motor in relation to the installation space in diagonal fans, the exhaust surface at the exhaust opening is relatively small, which results in high outlet losses in the flow due to high dynamic pressure at the outlet of the diagonal fan.
  • the invention is therefore based on the object of providing a diagonal fan in a compact design with a high power density and good noise characteristics.
  • a diagonal fan with a fan housing within which an external rotor motor and an impeller are accommodated, the external rotor motor having a stator and a rotor at least partially enclosing the stator.
  • An axial flow channel runs between the fan housing and the external rotor motor up to an outlet opening of the diagonal fan surrounding the external rotor motor, air sucked in via the impeller being sucked in through the flow channel during operation of the diagonal fan and being conveyable to the outlet opening.
  • the impeller is integrated into the rotor.
  • the integration of the impeller into the rotor is provided by the fact that the rotor and impeller are designed in one piece. The number of parts and the axial Installation space is therefore minimized. As an alternative to the one-piece design, the integral design can also be achieved in that parts of the impeller, such as B. the impeller blades are mounted on the rotor.
  • the diagonal fan has, in a blow-out section adjoining the blow-out opening, an air-guiding device with a plurality of air-guiding blades distributed in the circumferential direction.
  • the air guide vanes extend in the axial direction at least in an overlapping section over the rotor and are each spaced apart from the rotor by a radial air gap.
  • the rotor rotates relative to the airfoil vanes.
  • the size of the air gap corresponds to a maximum of 5%, preferably a maximum of 1.5%, of a maximum radial installation space of the diagonal fan.
  • the maximum radial installation space is determined by the outermost enveloping contour of the entire diagonal fan. In the case of an imaginary cylindrical design, the maximum radial installation space would correspond to the maximum outer diameter.
  • the diagonal fan in which the ratio of an axial length of the overlapping section of the air guide vanes to a non-overlapping section in which the air guide vanes do not overlap the rotor in the axial direction is in a range from 0.5 to 4.0 , preferably in a range from 1.5 to 2.5.
  • the air gap extends in the axial direction over the overlapping area, preferably with a constant size.
  • the air guide vanes are attached to the fan housing in sections in the axial direction.
  • the air guide vanes in the axially inwardly directed area on the fan housing adjoining the blow-out opening to be attached.
  • the impeller and/or the air guide vanes are geometrically designed in such a way that an axial distance between the air guide vanes and the impeller increases in the radial direction from a first distance to a second distance lying radially further outward.
  • the formation can take place, for example, by obliquely facing axial outer edges, via which the distance can be varied.
  • the air guide vanes have a straight axial edge, while the impeller blades are beveled radially outwards in the direction of the inlet opening, so that the distance between the air guide vanes in the exhaust area and the impeller blades increases radially outwards.
  • a radius of the impeller at a point of application of the first distance is greater than the first axial distance.
  • the point of attack is the point at which the first distance is measured.
  • the first distance can be set variably, the associated radius results accordingly. The same applies accordingly to the second distance and the second radius.
  • the fan housing is designed in several parts and has an inlet nozzle and a discharge part, the inlet nozzle comprising the suction opening and the discharge part comprising the outlet opening.
  • a two-part design is also favorable, in which the inlet nozzle is connected to the blow-out part directly adjacent in the axial direction.
  • the inlet nozzle and the outlet part are plugged into one another.
  • Also promoting a compact, axially short structure is a design of the diagonal fan, according to which the inlet nozzle equalizes the flow diameter reducing inlet section forming the inlet opening, which extends in the axial direction into the impeller.
  • an embodiment variant is advantageous for low noise development, in which the impeller has a cover disk, with the impeller blades extending from the rotor to the cover disk.
  • the cover disk can completely cover the impeller blades at their axial outer edges in the radial direction.
  • the cover disk can have a section which runs axially parallel and faces the inlet opening and into which the inlet nozzle extends.
  • the problem of the small exhaust surface can be improved in that the exhaust opening forms a non-rotationally symmetrical exhaust surface. This is made possible, for example, by the blow-out surface having a square cross-section.
  • the intake opening has an intake diameter which corresponds to 40 to 75%, preferably 50 to 60%, of the maximum radial installation space of the diagonal ventilator.
  • the size of the intake opening is reduced compared to axial fans in order to improve the inflow.
  • the diagonal fan is characterized in that the impeller has an impeller diameter that corresponds to 80 to 95% of a maximum radial installation space of the diagonal fan.
  • An embodiment is also advantageous in which the impeller is arranged directly adjacent to the flow channel and an air flow generated by the impeller is conveyed directly into the flow channel.
  • FIG. 1 to 3 an embodiment of a diagonal fan 1 is shown in different views.
  • figure 4 is an associated longitudinal sectional view for a more precise representation of the individual component elements and their arrangement in relation to one another.
  • the diagonal ventilator 1 comprises a two-part ventilator housing formed from the inlet nozzle 31 having the inlet opening 3 and the exhaust part 32 comprising the exhaust opening 5, on the axial ends of which flanges 21, 20 are formed.
  • the inlet nozzle 31 is inserted into the blow-out part 32 .
  • the external rotor motor with the stator 11 and the rotor 9 is provided centrally around the axis of rotation RA and encloses the stator 11 in sections in the axial direction.
  • the impeller of the diagonal fan 1 is formed from the rotor 9 , the impeller blades 8 arranged thereon and a cover plate 24 which completely covers the impeller blades in the radial direction and has an end section running axially straight in the direction of the inlet opening 3 .
  • the rotor 9 forms a bottom disk for the impeller.
  • the impeller is thus designed to be integrated into the rotor 9 .
  • the inlet nozzle 31 comprises an inlet section 7 that reduces the flow diameter and extends into the impeller in the axial direction, so that the axially parallel end section of the cover disk 24 and the inlet section 7 overlap.
  • the axial flow channel 19 extends between the exhaust part 32 of the fan housing and the rotor 9 of the external rotor motor up to the exhaust opening 5 surrounding the stator 11.
  • the air guide vanes 10 are connected to the stator 11 and to the blow-out part 32 adjacent to the blow-out opening 5 .
  • the air guide vanes 10 extend both in the axial direction and in the circumferential direction. They extend in the axial direction in the overlapping section Ly over the rotor 9 and spaced from it by a radial air gap S, the air gap S in the embodiment shown corresponding to 1% of the maximum radial installation space B of the diagonal fan 1 .
  • the size of the air gap S is constant over its axial extent.
  • the ratio of the axial length of the overlapping section Ly of the air guide vanes 10 to the axially adjacent non-overlapping section Lx has a value of 2.1 in the embodiment shown.
  • the distance between the mutually facing axial edges of the air guide vanes 10 and the impeller blades 8 increases from a first distance A1 to a second distance A2, with the axial edges of the air guide vanes 10 straight radially outwards, the impeller blades 8 running obliquely.
  • the position of the first and second distance can be freely selected, where it applies that the radius R1 of the impeller at the point of application of the first distance A1 is greater than the first distance A1. It also applies that the radius R2 of the impeller at the point of application of the second distance A2 is greater than the second distance A2.
  • the impeller has an impeller diameter DA that corresponds to 90% of the maximum radial installation space B of the diagonal fan 1 .

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP17781458.9A 2016-11-22 2017-10-04 Diagonalventilator Active EP3405679B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016122533.9A DE102016122533A1 (de) 2016-11-22 2016-11-22 Diagonalventilator
PCT/EP2017/075261 WO2018095633A1 (de) 2016-11-22 2017-10-04 Diagonalventilator

Publications (2)

Publication Number Publication Date
EP3405679A1 EP3405679A1 (de) 2018-11-28
EP3405679B1 true EP3405679B1 (de) 2023-05-03

Family

ID=59705080

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17781458.9A Active EP3405679B1 (de) 2016-11-22 2017-10-04 Diagonalventilator

Country Status (6)

Country Link
US (1) US10851792B2 (pl)
EP (1) EP3405679B1 (pl)
CN (1) CN206468550U (pl)
DE (1) DE102016122533A1 (pl)
PL (1) PL3405679T3 (pl)
WO (1) WO2018095633A1 (pl)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2952411C (en) * 2016-12-19 2022-03-22 S3 Manufacturing Inc. Mixed air flow fan for aerating an agricultural storage bin
USD894367S1 (en) * 2017-12-13 2020-08-25 Ebm-Papst Mulfingen Gmbh & Co. Kg Vent frame
DE102018128813A1 (de) 2018-11-16 2020-05-20 Ebm-Papst Mulfingen Gmbh & Co. Kg Diagonalventilator mit Drallreduzierung am Diagonallaufrad
DE102018128823A1 (de) * 2018-11-16 2020-05-20 Ebm-Papst Mulfingen Gmbh & Co. Kg Diagonalventilator mit Heizelement
DE102018128820A1 (de) 2018-11-16 2020-05-20 Ebm-Papst Mulfingen Gmbh & Co. Kg Diagonalventilator mit optimiertem Gehäuse
US12584498B2 (en) 2021-07-29 2026-03-24 Delta Electronics, Inc. Fan
DE102021209606A1 (de) 2021-09-01 2023-03-02 Brose Fahrzeugteile SE & Co. Kommanditgesellschaft, Würzburg Einlaufdüse für einen Radiallüfter
FR3166409A1 (fr) * 2024-09-15 2026-03-20 Valeo Systemes Thermiques Groupe moto-ventilateur avec une entrée d’air et une sortie d’air axiales à faibles nuisances sonores.

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2855141A (en) * 1955-11-25 1958-10-07 Jacobus C Van Rijn Two-piece cantilever fan and motor
DE4127134B4 (de) * 1991-08-15 2004-07-08 Papst Licensing Gmbh & Co. Kg Diagonallüfter
MXPA02012408A (es) * 2000-06-15 2004-02-26 Greenheck Fan Corp Ventilador centrifugo en linea.
TWI305486B (en) 2004-08-27 2009-01-11 Delta Electronics Inc Heat-dissipating fan and its housing
US7554228B2 (en) * 2005-05-25 2009-06-30 Hewlett-Packard Development Company, L.P. Cooling fan with an outer rotor motor
TWI377004B (en) 2008-03-28 2012-11-11 Delta Electronics Inc Fan and fan frame thereof
JP6155544B2 (ja) 2012-03-12 2017-07-05 日本電産株式会社 遠心ファン
DE102012106411A1 (de) * 2012-07-17 2014-01-23 Ruck Ventilatoren Gmbh Diagonal-Laufrad für einen Diagonal-Ventilator sowie Diagonal-Ventilator
WO2015023860A1 (en) * 2013-08-15 2015-02-19 United Technologies Corporation Coating pocket stress reduction for rotor disk of a gas turbine engine
DE102014210373A1 (de) 2014-06-02 2015-12-03 Ebm-Papst Mulfingen Gmbh & Co. Kg Radial- oder Diagonalventilator
DE102015207800A1 (de) * 2015-04-28 2016-11-03 Ziehl-Abegg Se Diagonal- oder Radialventilator, Leiteinrichtung für einen solchen Ventilator und System mit einem solchen Ventilator oder mit mehreren solcher Ventilatoren

Also Published As

Publication number Publication date
CN206468550U (zh) 2017-09-05
US10851792B2 (en) 2020-12-01
EP3405679A1 (de) 2018-11-28
WO2018095633A1 (de) 2018-05-31
PL3405679T3 (pl) 2023-08-14
US20190101122A1 (en) 2019-04-04
DE102016122533A1 (de) 2018-05-24

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