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EP3273066A1 - Roue de ventilateur - Google Patents

Roue de ventilateur Download PDF

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Publication number
EP3273066A1
EP3273066A1 EP17180706.8A EP17180706A EP3273066A1 EP 3273066 A1 EP3273066 A1 EP 3273066A1 EP 17180706 A EP17180706 A EP 17180706A EP 3273066 A1 EP3273066 A1 EP 3273066A1
Authority
EP
European Patent Office
Prior art keywords
blade
fan wheel
impeller blades
axial
impeller
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
EP17180706.8A
Other languages
German (de)
English (en)
Other versions
EP3273066B1 (fr
Inventor
Tobias Schmidt
Roland Keber
Jan Kopper
Martin DEININGER
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 Landshut GmbH
Original Assignee
Ebm Papst Landshut GmbH
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 Landshut GmbH filed Critical Ebm Papst Landshut GmbH
Publication of EP3273066A1 publication Critical patent/EP3273066A1/fr
Application granted granted Critical
Publication of EP3273066B1 publication Critical patent/EP3273066B1/fr
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
    • 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
    • F04D29/30—Vanes
    • 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
    • F05D2240/00—Components
    • F05D2240/20—Rotors
    • F05D2240/30—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor
    • F05D2240/303—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor related to the leading edge of a rotor blade

Definitions

  • the invention relates to an impeller with a cover plate and a support disk and a plurality between the cover disk and the support disk distributed over the circumference of the impeller arranged impeller blades.
  • the impeller is primarily designed as a radial impeller and used in radial blowers.
  • the known impellers work very well in practice and achieve high efficiency with low noise.
  • the requirements it is an object of the invention to further develop the known impellers so that an even more efficient delivery of air / gases or gas mixtures can be achieved with low production costs.
  • an impeller with a cover disk and a support disk and a plurality between the cover disk and the support disk distributed over the circumference of the impeller arranged impeller blades wherein on the support disk on a rotational axis of the impeller, a hub is formed and the cover disk is a about the axis of rotation having extending axial inlet opening.
  • the impeller blades each have a radially inwardly ending blade section, in which the blade edges extend at least in sections arcuately and extend in the axial direction to the support disk.
  • the support disc forms a radially extending blade edge covering portion in which the axial end edges of the fan wheel blades abut against the support disk, wherein an entire radial length of the blade edge covering portion is smaller than that of the individual impeller blades.
  • the at least partially arcuate radially inwardly ending vane sections of the impeller blades are in the region of the inlet opening and are directly impinged by the flow during operation of the impeller.
  • the blade edges of the fan wheel blades are each exposed in the radially inwardly ending blade section and are uncovered by the cover disk.
  • the flow thus hits after entry through the inlet opening directly to the specially shaped radially inwardly ending vane sections of the impeller blades whose arcuate portion is bent convexly inwardly.
  • all impeller blades are curved forwards or backwards and formed identically with respect to the mold.
  • the impeller is characterized in that the diameter of the adjoining the axis of rotation portion of the support plate is smaller than the diameter of the inlet opening of the cover plate. In axial plan view of the inlet opening thus the peripheral edge of this portion of the support disc is recognizable.
  • the impeller is advantageously formed in one piece. Preferred material is plastic.
  • the fan wheel blades in the respective radially inward-ending blade section in which the blade edges extend arcuately at least in sections, have a blade edge section adjoining the cover disk, in which the blade edges extend in an axially rectilinear manner when viewed in a lateral cross-section.
  • impeller blades in each radially inwardly ending blade section in which the blade edges are at least partially arcuate, have a blade edge portion adjacent to the support disk, in which the blade edges in a lateral cross section are radially rectilinear.
  • impeller blades in each radially inner end of the blade section in which the blade edges are arcuate at least in sections, have a blade edge portion adjacent to the cover disk, in which the blade edges in a lateral cross-section straight at an angle to a radial plane which is greater than zero, preferably in a range of 10 - 30 °.
  • the impeller blades in each radially inwardly ending blade section in which the blade edges are curved at least in sections, have a blade edge section adjoining the carrier disk, in which the blade edges are rectilinear in a lateral cross section an angle with respect to an axial plane, which is greater than zero, preferably in a range of 10 - 30 °.
  • the fan wheel blades always have an arcuate, inwardly directed convex portion in the respectively radially inwardly ending blade section, which adjoins either directly to the carrier disk and / or cover disk. Or it is additionally provided on the support disc and / or on the cover disc adjacent blade edge portion which extends between the arcuate portion and the support and / or cover plate.
  • the blade edge section adjoining the carrier disk runs in a straight line parallel or inclined to the rotation axis or an axial plane.
  • the blade edge section adjoining the cover plate extends in a straight line parallel or inclined to a radial plane.
  • a length F2 of the rectilinear blade edge section adjoining the carrier disc is in a range from a maximum axial height b1 of the fan wheel blades in the respective radially inwardly ending blade section such that 0 ⁇ F2 / b1 ⁇ 0.75.
  • the respectively arcuate section of the blade edges of the respective radially inwardly ending blade section extends as far as the cover disk and / or the support disk. Then it is dispensed with rectilinear blade edge portions.
  • the ratio between the maximum axial height b1 of the impeller blades and the maximum height H1 between the inlet opening edge and the axial inner surface of the support disk is in a range that is 0.6 ⁇ b1 / H1 ⁇ 0.9.
  • the ratio between a length A1, via which the fan wheel blades rest on a section of the carrier disk adjoining the axis of rotation, and the fan wheel diameter D lies in a range such that 0.02 ⁇ A1 / D ⁇ 0.25.
  • the length A1 corresponds to a straight line, in the case of curved fan impellers the length A1 is determined by the line intergral.
  • the impeller blades have a connecting portion to the cover plate, wherein the connecting portion in an axial plan view radially cut by the blade has a width t2 and the impeller blades have a width t1 in an axial plan view in the radially inner end blade portion, and 0.16 ⁇ t1 / t2 ⁇ 0.8 in terms of the ratio of the widths ,
  • the support disk has a ring, which adjoins in the radial direction at a distance adjoining the axis of rotation portion of the support disk, wherein the axial end edges of the impeller blades rest against the ring of the support disk and are axially covered by this.
  • the ring forms a portion of the entire radial length of the blade edge covering portion.
  • the ring is arranged in an advantageous variant on the radial outer edge of the impeller blades and terminates flush with an axially adjacent radially outer edge of the impeller blades.
  • the impeller is designed in one embodiment such that the impeller blades extend in the radial direction beyond the cover plate.
  • impeller In a further development of the impeller is also provided that it has radially shorter intermediate blades, which are attached exclusively to the cover plate and the ring.
  • a variant of the fan wheel is also advantageous, in which the fan wheel blades, seen in axial plan view, extend tangentially to a circular plane about the axis of rotation in the blade section ending radially inward.
  • FIGS. 1 . 2 and 2a are in an axial plan view and in lateral sectional views AA and BB an embodiment of a one-piece radial impeller 1 with a cross-sectionally extending cover plate 2, a support plate 3 and a plurality between the cover plate 2 and the support plate 3 distributed over the circumference of the impeller 1 arranged impeller blades 4 shown.
  • the impeller 1 has in the Cover plate 2 an axial inlet opening 6 for the intake of air and / or gas mixtures.
  • On the radial outer side of the impeller 1 is the outlet 25 for blowing out the air and / or the gas mixtures.
  • the ring 16 surrounds the axially or obliquely directed to the support disk 3 end edges of the impeller blades 4 and thus forms a radial outer spaced portion of the support disc.
  • the impeller blades 4 each have a radially inwardly ending blade section 7, in which the blade edges 8 extend in sections arcuately and extend in the axial direction to the support plate 3 and merge into one piece.
  • the support plate 3 forms with the ring 16 extending in the radial direction of the blade edge covering portion 9, in which the axial end edges of the impeller blades 4 are respectively covered by the support plate 3 and integrally connected thereto.
  • the entire radial length of the blade edge covering portion 9 is less than that of the individual impeller blades 4, so that the axial blade edges are uncovered in all sections where neither the support plate 3 nor the ring 16 are formed and are exposed in the axial direction.
  • the impeller blades 4 extend in the radially inwardly ending blade section 7 tangentially to an imaginary circle plane about the axis of rotation.
  • each radially shorter intermediate blades 24 are provided, which are exclusively connected to the ring 16 and the cover plate 2.
  • the intermediate blades 24 are spaced with their radially inner edge portion of a radial outer edge of the hub 5 radially outwardly extending portion of the support plate 3.
  • the impeller blades 4 include a connection portion 15 to the cover plate 2, in which its width t2 is formed larger than in the radially inner end of the blade section 7, in which they have a width t1.
  • the ratio of t1 / t2 in the embodiment shown is 0.6.
  • the connecting portion 15 extends radially outward over the entire length of the fan wheel 4 along the cover plate. 2
  • FIGS. 4a-4c Three alternative embodiments of the blade edges 8 in the radially inwardly ending blade section 7 are shown.
  • Fig. 4a have the blade edges 8 of the impeller blades 4 in each radially inwardly ending blade section 7 on three blade edge portions.
  • the blade edge section 13 which immediately adjoins the blade edge section 10 is arc-shaped and convex radially inward, its curved shape having a constant rounding.
  • the embodiment according to Fig. 4b is identical to the one out Fig. 4a except that the two blade edge portions 10 and 11 are radial or axially rectilinearly parallel to the imaginary radial plane or axial plane.
  • the embodiments according to Fig. 4a and 4b is the ratio of the length F1 of the rectilinear blade edge portion 10 adjacent to the cover disk 2 with respect to the maximum axial height b1 of the fan wheel blades 4 in each radially inwardly ending blade portion 7 at a value of 0.35 ( Fig. 4a ) or 0.45 ( Fig. 4b ).
  • the ratio of the length F2 of the rectilinear blade edge section 11 adjoining the carrier disk 3 to the maximum axial height b1 of the fan wheel blades 4 in the respective radially inwardly ending blade section 7 is 0.25 ( Fig. 4a ) or 0.3 ( Fig. 4b ).
  • the maximum height b1 determines the flow inlet height of the support plate 3 in the radially adjoining Gebläseradabexcellent with exposed axial blade edges.
  • the arcuate convex blade edge portion 13 immediately adjoins the support disk 3.
  • the roundness of the arcuate convex blade edge portion 13 is less than in the embodiments according to FIG Fig. 4a and 4b ,

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP17180706.8A 2016-07-22 2017-07-11 Roue de ventilateur Active EP3273066B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102016113589.5A DE102016113589A1 (de) 2016-07-22 2016-07-22 Gebläserad

Publications (2)

Publication Number Publication Date
EP3273066A1 true EP3273066A1 (fr) 2018-01-24
EP3273066B1 EP3273066B1 (fr) 2022-06-15

Family

ID=59315484

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17180706.8A Active EP3273066B1 (fr) 2016-07-22 2017-07-11 Roue de ventilateur

Country Status (3)

Country Link
EP (1) EP3273066B1 (fr)
CN (1) CN207178292U (fr)
DE (2) DE102016113589A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3366929A1 (fr) * 2017-02-23 2018-08-29 ebm-papst Landshut GmbH Roue de ventilateur en une seule pièce

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3530956B1 (fr) 2018-02-26 2021-09-22 Honeywell Technologies Sarl Roue à aubes pour soufflante radiale et appareil à brûleur à gaz

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0627560A1 (fr) * 1993-06-04 1994-12-07 Alcatel SEL Aktiengesellschaft Soufflante radiale
WO2006013067A2 (fr) 2004-07-31 2006-02-09 Ebm-Papst Landshut Gmbh Roue de soufflante radiale
EP2058525A1 (fr) * 2007-11-12 2009-05-13 Fime - S.p.A. Turbine de ventilateur radial et ventilateur radial
EP2492513A2 (fr) * 2011-02-22 2012-08-29 Samsung Electronics Co., Ltd Réacteur à double flux de système de climatisation

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0627560A1 (fr) * 1993-06-04 1994-12-07 Alcatel SEL Aktiengesellschaft Soufflante radiale
WO2006013067A2 (fr) 2004-07-31 2006-02-09 Ebm-Papst Landshut Gmbh Roue de soufflante radiale
EP2058525A1 (fr) * 2007-11-12 2009-05-13 Fime - S.p.A. Turbine de ventilateur radial et ventilateur radial
EP2492513A2 (fr) * 2011-02-22 2012-08-29 Samsung Electronics Co., Ltd Réacteur à double flux de système de climatisation

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3366929A1 (fr) * 2017-02-23 2018-08-29 ebm-papst Landshut GmbH Roue de ventilateur en une seule pièce

Also Published As

Publication number Publication date
DE202017103890U1 (de) 2017-07-21
CN207178292U (zh) 2018-04-03
DE102016113589A1 (de) 2018-01-25
EP3273066B1 (fr) 2022-06-15

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