EP3880967A1 - Ventilateur diagonal équipé d'un dispositif directeur de sortie - Google Patents

Ventilateur diagonal équipé d'un dispositif directeur de sortie

Info

Publication number
EP3880967A1
EP3880967A1 EP19786761.7A EP19786761A EP3880967A1 EP 3880967 A1 EP3880967 A1 EP 3880967A1 EP 19786761 A EP19786761 A EP 19786761A EP 3880967 A1 EP3880967 A1 EP 3880967A1
Authority
EP
European Patent Office
Prior art keywords
diagonal
impeller
housing
fan according
axial
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.)
Pending
Application number
EP19786761.7A
Other languages
German (de)
English (en)
Inventor
Thomas Heli
Jörg GÜNTHER
Peter Riegler
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 EP3880967A1 publication Critical patent/EP3880967A1/fr
Pending legal-status Critical Current

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
    • F04D17/06—Helico-centrifugal 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
    • 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
    • F04D29/38—Blades
    • F04D29/384—Blades characterised by form
    • 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
    • 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
    • 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
    • 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
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/52—Casings; Connections of working fluid for axial pumps
    • F04D29/54—Fluid-guiding means, e.g. diffusers
    • F04D29/541—Specially 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
    • F04D29/00—Details, component parts, or accessories
    • F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
    • F04D29/701—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps
    • F04D29/703—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps specially for fans, e.g. fan guards
    • 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
    • F05D2250/50—Inlet or outlet
    • F05D2250/52—Outlet

Definitions

  • the invention relates to a diagonal fan in a compact axial design and with a long throw.
  • Diagonal fans and their use are generally known from the prior art, for example from DE 10 2014 210 373 A1.
  • Diagonal fans are used in applications with high air performance requirements with higher back pressure and a small installation space, for example in cooling technology or extractor hoods. Due to the large motor diameter of diagonal fans in relation to the installation space Known as the axially central motor, the blow-out area at the blow-out opening is relatively small, which leads to high outlet losses in the flow due to high dynamic pressure at the outlet of the diagonal fan.
  • Axial fans are usually used to achieve long throwing distances. However, diagonal fans are cheap for the compact design. The invention solves the problem of achieving both aspects of a compact design with a large throw range and pressure increase.
  • a diagonal fan with an electric motor, a housing and a diagonal impeller which is accommodated within the housing and can be driven by the electric motor is proposed.
  • the diagonal flow generated by the diagonal impeller during operation is deflected by an inner wall of the housing in an axial flow direction.
  • the diagonal impeller is then arranged with a guide device with a plurality of guide vanes distributed in the circumferential direction, which uniformizes an air flow generated by the diagonal impeller, the guide vanes having a radial extension from a hub region of the guide device to the housing.
  • the guide device is arranged at a special axial distance from the diagonal impeller.
  • a point is defined at which an imaginary extension in the outflow angle of the diagonal impeller meets the inner wall of the housing at an axial distance K from the diagonal impeller.
  • the guide device is arranged axially in an area around the intersection of the outflow angle and the inner wall of the housing at an axial distance H from the diagonal impeller that applies
  • the discharge angle of the diagonal impeller is determined by the paddle boards or an optional additional thrower ring.
  • the foremost axial plane facing the diagonal impeller serves as the measuring point on the diagonal impeller, the axial plane on the diagonal impeller through the radial outer edge of the impeller blades or as far as a thrower ring is used, the axial end of which points towards the directing means.
  • the diagonal flow blown out by the diagonal impeller is deflected in the axial direction by the housing and is evened out by the after-guide device.
  • the special arrangement to each other enables the long throw range with a compact axial design.
  • an advantageous embodiment provides that the after-guiding device is formed in one piece with the housing. The number of parts and assembly steps can thus be reduced. A seal between the components can also be dispensed with.
  • the follow-up device has a protective grille that extends over a blow-out section of the diagonal fan.
  • the axial length L of the protective grille is less than 50% of the maximum axial length C of the guide device.
  • a variant of the diagonal fan is also favorable, in which the secondary guide device, the housing and the protective grille are formed in one piece.
  • the protective grille also has a multiplicity of ring webs arranged coaxially to one another, each of which forms web surfaces that run parallel and opposite to the axial flow direction. The flow thus runs in a parallel manner along the web surfaces over the entire axial length L of the protective grid.
  • the ring webs in the area of the guide blades are axial to a leading edge of the respective guide blades trained above.
  • the guide vanes can thus be partly formed by the projecting section of the ring webs, so that the web surfaces formed by the ring webs in the region of the guide vanes are enlarged axially ver.
  • the axially projecting sections of the ring webs can serve to stiffen the guide vanes.
  • the guide vanes of the guide device can have different shapes and cross sections.
  • the guide vanes are curved in the shape of an arc in the axial cross section and are additionally or alternatively profiled.
  • a wing shape e.g. a convex shape.
  • the different inflow angles of the diagonal impeller used in each case can therefore be taken into account.
  • a straight radial extension of the guide vanes is also possible.
  • the guide vanes of the secondary guide device can be designed to be three-dimensionally curved, i.e. the curvature is also axial.
  • a favorable design of the diagonal fan also provides that the guide vanes of the secondary guide pass directly into the protective grille and thus interact directly in terms of flow.
  • the diagonal impeller also includes a hub with impeller blades attached or formed thereon.
  • the two hubs or hub areas are preferably dimensioned such that a maximum diameter G of the hub area of the guide device is larger than a maximum diameter F of a hub of the diagonal impeller, so that the hub area of the guide device covers the hub of the diagonal wheel as seen in axial projection.
  • a further advantageous solution for the axially compact design of the diagonal fan is characterized in that the after-guide device has a motor mount for the electric motor in the hub area.
  • the hub area of the guiding device can also be designed to be axially retracted, so that motor components and guiding device overlap as seen in radial section.
  • an advantageous embodiment of the diagonal fan provides that the diagonal impeller has a centrifugal ring which surrounds impeller blades distributed in the circumferential direction.
  • the centrifugal ring enables a precisely adjustable outflow angle and a flow line at a predetermined angle with respect to the rotation axis of the diagonal impeller.
  • Another advantageous aspect is to design the electric motor as an external rotor motor in the case of the diagonal fan. This allows the diagonal impeller to enclose the motor and the axial space requirement is minimized.
  • a further development of the diagonal fan also provides that it comprises an inlet nozzle which is arranged on the suction side of the housing.
  • the inlet nozzle preferably extends in the axial direction into the slinger ring, so that the inlet nozzle and the slinger ring overlap in sections as seen in radial section.
  • FIG. 1 shows an exploded perspective view of a diagonal fan with a view of the inlet side
  • FIG. 2 is an exploded perspective view of the diagonal valve lators from Figure 1 with a view of the outlet side;
  • FIG. 3 shows a view in radial section of the diagonal fan from FIG
  • Fig. 4 is a perspective sectional view of the diagonal fan
  • the components of the housing 2 can be seen with the stationary guide device 3 formed thereon in one piece, the diagonal impeller 4, the electric motor 5 designed as an external rotor motor and the inlet nozzle 6 which can be inserted into the housing 2.
  • the diagonal fan 1 is shown in the assembled state in FIGS. 3 to 4 and has a total taxi length E.
  • the diagonal impeller 4 comprises a plurality of impeller blades 9 which extend radially outward from the axially open hub 8 and which are surrounded by the slinger 14.
  • the centrifugal ring 14 has a flow cross section which widens radially outward in the axial flow direction and faces the inner wall of the housing 2.
  • the electric motor 5 is inserted into the axially open hub 8 of the diagonal impeller 4 and is completely enclosed by it. In the axial direction, ie along the axis of rotation, the electric motor 5 extends into the central depression 11, so that it can be positioned closer to the diagonal impeller 4.
  • the diagonal impeller 4 driven by the electric motor 5 is arranged within the housing 2 forming a flow channel and has an axial length D.
  • the inlet nozzle 6 is arranged on the inlet side and extends with its end section of the smallest flow cross-section (diameter A) up to the area of the diagonal impeller 4, so that the slinger 14 and the end section of the inlet nozzle 6 overlap.
  • the diagonal fan 1 draws in air axially via the diagonal impeller 4 and conveys it diagonally, i.e. with respect to the axis of rotation at a predetermined outflow angle in the direction of the inner wall of the housing 2.
  • the outflow angle is largely determined via the slinger 14.
  • the imaginary extension V in the outflow angle of the diagonal impeller 4, determined by the centrifugal ring 14, strikes the inner wall of the housing 2 at point P at point P from the diagonal impeller 4.
  • the axial plane at which the centrifugal ring is used serves as the measuring point for the distance K 14 ends.
  • the measurement on the axial plane is determined by the radial outer edge of the fan wheel blades 9, identified by the letter H '.
  • the flow is then diverted back into an axial flow direction and conveyed to the follow-up device 3.
  • the guide device 3 with a plurality of guide vanes 7 distributed in the circumferential direction is then arranged at a distance H.
  • the ratio between the distances K / H is fixed at 0.8 in the embodiment shown.
  • the follow-up device 3 further comprises an integral protective grille 17 with a plurality of ring webs 13 arranged coaxially to one another, each of which form web surfaces 19 that run parallel and opposite to the axial flow direction.
  • the axial length L of the protective grid 17 corresponds to half the axial length C of the after-guide device 3.
  • the maximum flow cross-section of the after-guide device (diameter B) is on the exhaust side in the area of the ring webs 13.
  • the after-guide device 3 equalizes the flow by means of the guide vanes 7 and the protective screen 17.
  • the guide vanes 7 extend in the axial direction through the protective screen 13 and thus break through the ring webs 13 as a kind of arcuate radial webs, as can be clearly seen in FIG.
  • the annular webs 13 in the area of the guide vanes 7 are formed axially to the leading edge of the respective guide vanes 7 in section 12 and thus ensure stiffening and support of the guide vanes 7.
  • the guide vanes 7 are curved in the shape of an arc as seen in the axial cross section and are curved radially outward in the radial section according to FIG. 3, so that there is a three-dimensional overall curvature.
  • the guide vanes 7 are profiled in a radial section according to FIG. 3 according to an aerofoil, their respective thicknesses initially increasing in the axial direction and then decreasing again. Referring to Figure 3, the ratio of the maximum diameter G of the hub area of the Nachleit driven 3 and the maximum diameter F of the hub 8 of the diagonal impeller 4 is shown, wherein G> F.

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 moteur électrique, un carter et un rotor diagonal qui est logé dans le carter, peut être entraîné par l'intermédiaire du moteur électrique et dont l'écoulement diagonal généré pendant le fonctionnement est redirigé par une paroi interne du carter dans une direction d'écoulement axiale. Un dispositif directeur de sortie équipé d'une pluralité d'aubes directrices réparties dans la direction périphérique est disposé à côté du rotor diagonal, vu dans la direction d'écoulement axiale, et homogénéise un écoulement d'air généré par le rotor diagonal. Les aubes directrices comportent une extension radiale, d'une zone de moyeu du dispositif directeur de sortie jusqu'au carter. Un prolongement imaginaire de l'angle d'évacuation du rotor diagonal rencontre la paroi interne du carter à une distance axiale K du rotor diagonal et le dispositif directeur de sortie est agencé à une distance axiale H du rotor diagonal, de sorte que 0,75≤K/H≤1,25.
EP19786761.7A 2018-11-16 2019-10-09 Ventilateur diagonal équipé d'un dispositif directeur de sortie Pending EP3880967A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018128791.7A DE102018128791A1 (de) 2018-11-16 2018-11-16 Diagonalventilator mit Nachleiteinrichtung
PCT/EP2019/077415 WO2020099033A1 (fr) 2018-11-16 2019-10-09 Ventilateur diagonal équipé d'un dispositif directeur de sortie

Publications (1)

Publication Number Publication Date
EP3880967A1 true EP3880967A1 (fr) 2021-09-22

Family

ID=68233988

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19786761.7A Pending EP3880967A1 (fr) 2018-11-16 2019-10-09 Ventilateur diagonal équipé d'un dispositif directeur de sortie

Country Status (5)

Country Link
US (1) US20220106966A1 (fr)
EP (1) EP3880967A1 (fr)
CN (1) CN209743192U (fr)
DE (1) DE102018128791A1 (fr)
WO (1) WO2020099033A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018128820A1 (de) * 2018-11-16 2020-05-20 Ebm-Papst Mulfingen Gmbh & Co. Kg Diagonalventilator mit optimiertem Gehäuse
CN112220367B (zh) * 2020-09-30 2022-03-18 宁波方太厨具有限公司 一种用于烹饪设备的扇叶结构及具有该结构的烤箱
CN112644244B (zh) * 2020-12-15 2022-06-17 上海爱斯达克汽车空调系统有限公司 适用于后向曲线叶轮的压力回收装置及汽车空调
DE102021104611A1 (de) 2021-02-26 2022-09-01 Robert Bosch Gesellschaft mit beschränkter Haftung Vorrichtung zum Durchströmen einer Komponente einer Klimaanlage oder einer Heizanlage und Wärmepumpen-Außeneinheit
EP4086463A1 (fr) * 2021-05-06 2022-11-09 Carrier Corporation Grille de diffusion intégrée pour ventilateur axial

Family Cites Families (14)

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Publication number Priority date Publication date Assignee Title
US2380772A (en) * 1943-09-01 1945-07-31 Gen Electric Centrifugal compressor
DE20319749U1 (de) * 2003-12-18 2004-11-04 Ruck Ventilatoren Gmbh Rohrventilator
EP1895166B1 (fr) * 2006-08-30 2009-02-11 Ralf Meier Appareil d'homogénisation d'un courant pour un ventilateur
KR101295905B1 (ko) * 2007-04-11 2013-08-12 한라비스테온공조 주식회사 팬 및 쉬라우드의 조립체
CA2716117C (fr) * 2008-02-22 2016-07-12 Horton, Inc. Fabrication et assemblage de ventilateur
DE202009014212U1 (de) * 2009-10-21 2011-03-03 Ebm-Papst Mulfingen Gmbh & Co. Kg Luftleitelement für einen Axialventilator
DE102010032168A1 (de) * 2010-07-23 2012-01-26 Ruck Ventilatoren Gmbh Diagonal-Ventilator
DE102011015784A1 (de) * 2010-08-12 2012-02-16 Ziehl-Abegg Ag Ventilator
DE202010016820U1 (de) * 2010-12-21 2012-03-26 Ebm-Papst Mulfingen Gmbh & Co. Kg Diffusor für einen Ventilator sowie Ventilatoranordnung mit einem derartigen Diffusor
US10550847B2 (en) * 2011-03-26 2020-02-04 Ebm-Papst St. Georgen Gmbh & Co. Kg Mixed-flow or diagonal ventilating fan with consistent cooling
DE102013223983A1 (de) * 2013-11-25 2015-05-28 Ebm-Papst Mulfingen Gmbh & Co. Kg Lüfterbaueinheit
DE102014210373A1 (de) 2014-06-02 2015-12-03 Ebm-Papst Mulfingen Gmbh & Co. Kg Radial- oder Diagonalventilator
KR102412277B1 (ko) * 2014-09-03 2022-06-27 코웨이 주식회사 원심 송풍기
DE202016106538U1 (de) * 2016-11-22 2016-12-02 Ebm-Papst Mulfingen Gmbh & Co. Kg Diagonalventilator

Also Published As

Publication number Publication date
WO2020099033A1 (fr) 2020-05-22
US20220106966A1 (en) 2022-04-07
DE102018128791A1 (de) 2020-05-20
CN209743192U (zh) 2019-12-06

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