EP3405679A1 - Ventilateur diagonal - Google Patents

Ventilateur diagonal

Info

Publication number
EP3405679A1
EP3405679A1 EP17781458.9A EP17781458A EP3405679A1 EP 3405679 A1 EP3405679 A1 EP 3405679A1 EP 17781458 A EP17781458 A EP 17781458A EP 3405679 A1 EP3405679 A1 EP 3405679A1
Authority
EP
European Patent Office
Prior art keywords
impeller
diagonal fan
fan according
diagonal
rotor
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
Application number
EP17781458.9A
Other languages
German (de)
English (en)
Other versions
EP3405679B1 (fr
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/fr
Application granted granted Critical
Publication of EP3405679B1 publication Critical patent/EP3405679B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • 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

Definitions

  • the invention relates to a diagonal fan in an improved compact design with high power density and low noise.
  • Diagonal fans In general, diagonal fans and their use are known from the prior art, for example from DE 10 2014 210 373 A1. Diagonal fans are used in applications with high demands on air performance at higher back pressure and low installation space, for example in cooling technology or in extractor hoods. By the in diagonal fans in relation to the installation space large engine diameter of the axially centrally disposed engine, the discharge area at the exhaust port is relatively small, resulting in high leakage losses in the flow due to high dynamic pressure at the outlet of the Dia- gonalventilators.
  • the invention is therefore based on the object to provide a diagonal fan in a compact design with high power density and good noise behavior.
  • a diagonal fan with a fan housing within which an external rotor motor and an impeller are accommodated, wherein the external rotor motor has a stator and a rotor surrounding the stator at least partially.
  • an axial flow channel extends up to an outlet opening of the diagonal fan surrounding the external rotor motor, wherein air drawn in through the flow channel during operation of the diagonal fan can be conveyed to the outlet opening.
  • the impeller is integrated in the rotor.
  • the integration of the impeller into the rotor is provided in one embodiment in that rotor and impeller are integrally formed. The number of parts and the axial space are therefore minimized. As an alternative to the one-piece design, the integral design can also be achieved by that parts of the impeller, such. As the impeller blades are mounted on the rotor.
  • the diagonal fan has an air guiding device with a plurality of air guide vanes distributed in the circumferential direction in an exhaust section adjoining the exhaust opening.
  • the air guide vanes extend in the axial direction over the rotor, at least in an overlapping section, and are each spaced from the rotor with a radial air gap.
  • the air gap has, in an embodiment which is advantageous for the noise development and performance of the diagonal fan, a size which 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 space is determined by the outermost envelope contour of the entire diagonal fan. In an imaginary design in cylindrical form, the maximum radial space would correspond to the maximum outer diameter.
  • a ratio of an axial length of the overlapping portion of the air guide vanes to a non-overlapping portion in which the air vanes do not cover the rotor in the axial direction is in a range of 0.5 to 4.0 , preferably in the range of 1.5 to 2.5.
  • the air gap extends in the axial direction over the overlap region, preferably in a constant size.
  • the air guide vanes are fixed in sections in the axial direction on the fan housing.
  • the air guide vanes can be fastened in the region adjoining the exhaust opening in the axially inwardly directed region on the fan housing.
  • the impeller and / or the air guide vanes are geometrically designed such that an axial distance between the air vanes and the impeller increases in the radial direction from a first distance to a second distance radially further outward.
  • the training can be done for example by obliquely facing each other axial outer edges over which the distance can be varied.
  • the air vanes have a straight axial edge, the impeller vanes, however, beveled radially outward toward the inlet opening, so that the distance between the air vanes in the blow-out and the impeller blades increases radially outward seen. It is also advantageous if 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 corresponding radius results accordingly. The same applies accordingly for the second distance and the second radius.
  • the fan housing is designed in several parts and has an inlet nozzle and a blow-out, wherein the inlet nozzle comprises the suction opening and the blow-out the blow-out.
  • a two-part embodiment is favorable, in which the inlet nozzle is connected in the axial direction directly adjacent to the blow-out part.
  • the inlet nozzle and the discharge part are inserted into each other.
  • the inlet nozzle has an inlet section reducing the flow diameter and forming the inlet opening has, which extends in the axial direction into the impeller.
  • the impeller has a cover disk, wherein the impeller blades extend from the rotor to the cover disk.
  • the cover plate can completely cover the impeller blades at their axial outer edges in the radial direction.
  • the cover disk can have an axially parallel section pointing to the inlet opening into which the inlet nozzle extends.
  • the problem of the small discharge area can be improved by the fact that the discharge opening forms a non-rotationally symmetrical discharge area. This is made possible, for example, by a cross-sectionally square shape of the discharge surface.
  • the size of the suction opening is reduced compared to axial fans to improve the inflow.
  • the diagonal fan is characterized in that the impeller has an impeller diameter which corresponds to 80 to 95% of a maximum radial installation space of the diagonal fan.
  • an embodiment is advantageous in which the impeller is arranged directly adjacent to the flow channel and a generated by the impeller air flow is conveyed directly into the flow channel.
  • Fig. 1 is a perspective view of a diagonal fan
  • FIG. 2 is a front view of the suction side of the diagonal fan of FIG. 1
  • FIG. 3 is a rear view of the suction side of the diagonal fan of FIG. 1
  • FIG. 4 is a sectional view of the upper half of the diagonal fan of FIG. 1.
  • FIG. 1 an embodiment of a diagonal fan 1 is shown in different views.
  • Figure 4 is an associated longitudinal sectional view for a more detailed representation of the individual component elements and their arrangement to each other.
  • the diagonal fan 1 comprises a two-part fan housing formed from the inlet opening 31 having the inlet nozzle 31 and the exhaust opening 5 comprehensive blow-out 32, at the axial ends of each flanges 21, 20 are formed.
  • the inlet nozzle 31 is inserted into the discharge part 32.
  • Central to the axis of rotation RA of the external rotor motor with the stator 1 and the rotor 9 is provided which surrounds the stator 11 in the axial direction in sections.
  • the impeller of the diagonal fan 1 is formed from the rotor 9, the impeller blades 8 arranged thereon and a cover disk 24 which completely covers the impeller blades in the radial direction and has an end portion extending axially straight in the direction of the inlet opening 3.
  • the rotor 9 forms a bottom plate for the impeller.
  • the impeller is thus formed integrated into the rotor 9.
  • the inlet nozzle 31 includes a the flow diameter reducing inlet portion 7, which extends in the axial direction into the impeller, so that the axially parallel end portion of the cover plate 24 and the inlet portion 7 overlap.
  • Axially adjacent to the impeller extends between the discharge part 32 of the fan housing and the rotor 9 of the external rotor motor of the axial flow channel 19 up to the stator 1 surrounding the exhaust opening. 5
  • an air guiding device with a plurality of air guide vanes 10 distributed in the circumferential direction, which are also clearly visible in FIG.
  • Adjacent to the exhaust opening 5, the air guide vanes 10 are connected to the stator 11 and the blow-out 32.
  • the air vanes 10 extend both in the axial direction and in the circumferential direction. They extend in the axial direction in the overlap section Ly over the rotor 9 away and spaced therefrom with a radial air gap S, wherein the air gap S in the embodiment shown corresponds to 1% of the maximum radial 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 overlap portion Ly of the air vanes 10 to the axially adjacent uncovering portion Lx is 2.1 in the illustrated embodiment.
  • the distance between the facing axial edges of the air 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 vanes 10 just radially outward.
  • the impeller blades 8 are inclined.
  • the position of the first and second distance is arbitrary, with the proviso 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 holds that the Radius R2 of the impeller at the point of the second distance A2 is greater than the second distance A2.
  • the impeller has an impeller diameter DA, which corresponds to 90% of the maximum radial 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)

Abstract

L'invention concerne un ventilateur diagonal comprenant un logement de ventilateur à l'intérieur duquel sont logés un moteur à induit extérieur et une roue à aubes. Le moteur à induit extérieur comprend un stator (11) et un rotor (9) entourant au moins en partie le stator. Un canal d'écoulement axial s'étend entre le carter de ventilateur et le moteur à induit extérieur jusqu'à une ouverture de soufflage du ventilateur diagonal, laquelle ouverture entoure le moteur à induit extérieur, canal à travers lequel l'air aspiré par la roue à aubes lors d'un fonctionnement peut être transporté jusqu'à une ouverture de soufflage, et la roue à aubes est intégrée dans le rotor.
EP17781458.9A 2016-11-22 2017-10-04 Ventilateur diagonal Active EP3405679B1 (fr)

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 (fr) 2016-11-22 2017-10-04 Ventilateur diagonal

Publications (2)

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

Family

ID=59705080

Family Applications (1)

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

Country Status (6)

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

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2952411C (fr) * 2016-12-19 2022-03-22 S3 Manufacturing Inc. Ventilateur d'ecoulement d'air mixte servant a aerer un bac d'entreposage de produit agricole
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
DE102018128820A1 (de) 2018-11-16 2020-05-20 Ebm-Papst Mulfingen Gmbh & Co. Kg Diagonalventilator mit optimiertem Gehäuse
DE102018128823A1 (de) * 2018-11-16 2020-05-20 Ebm-Papst Mulfingen Gmbh & Co. Kg Diagonalventilator mit Heizelement
DE102021209606A1 (de) 2021-09-01 2023-03-02 Brose Fahrzeugteile SE & Co. Kommanditgesellschaft, Würzburg Einlaufdüse für einen Radiallüfter

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
CA2412773C (fr) * 2000-06-15 2009-09-15 Greenheck Fan Corporation Ventilateur centrifuge en ligne
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
US10577933B2 (en) * 2013-08-15 2020-03-03 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
WO2018095633A1 (fr) 2018-05-31
US10851792B2 (en) 2020-12-01
US20190101122A1 (en) 2019-04-04
DE102016122533A1 (de) 2018-05-24
CN206468550U (zh) 2017-09-05
EP3405679B1 (fr) 2023-05-03
PL3405679T3 (pl) 2023-08-14

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