EP3475580A1 - Disque de roue de ventilateur et roue de ventilateur - Google Patents

Disque de roue de ventilateur et roue de ventilateur

Info

Publication number
EP3475580A1
EP3475580A1 EP17734033.8A EP17734033A EP3475580A1 EP 3475580 A1 EP3475580 A1 EP 3475580A1 EP 17734033 A EP17734033 A EP 17734033A EP 3475580 A1 EP3475580 A1 EP 3475580A1
Authority
EP
European Patent Office
Prior art keywords
impeller
blade
wheel
axial end
disk
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
EP17734033.8A
Other languages
German (de)
English (en)
Other versions
EP3475580B1 (fr
Inventor
Alexander Konzal
Erhard Gruber
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 EP3475580A1 publication Critical patent/EP3475580A1/fr
Application granted granted Critical
Publication of EP3475580B1 publication Critical patent/EP3475580B1/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
    • 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
    • F04D29/282—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers the leading edge of each vane being substantially parallel to the rotation axis
    • 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
    • F04D29/02—Selection of particular materials
    • F04D29/023—Selection of particular materials 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
    • F04D29/18—Rotors
    • F04D29/22—Rotors specially for centrifugal pumps
    • F04D29/2205—Conventional flow pattern
    • F04D29/2222—Construction and assembly
    • 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
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
    • F04D29/624—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
    • F04D29/626—Mounting or removal of fans

Definitions

  • the invention relates to a blower wheel and an impeller with a corresponding impeller.
  • Fan wheels are used as floor or cover discs
  • the impeller blades are connected to the bottom and / or cover plate, usually welded.
  • Fan blades for this purpose must be brought at their respective axial end edges in a shape that corresponds to the shape of the impeller wheel. Since the impeller disks usually have differently curved and / or spherical sections from radially inward to radially outward, the axial end edges must be cut to length over partially complex spatial cross-sectional guides, so that the axial end edges can be brought into abutment against the impeller blade and fastened. Although such cutting guides for cutting the impeller blades are technically possible, for example by laser cutting, but time consuming and expensive. They are unsuitable for mass production.
  • the invention is therefore based on the object to provide a Gebläseradfraction and an impeller, which are designed such that it can be dispensed with spatial sections for cutting the impeller blades and their adaptation to spatially curved portions of the impeller disk.
  • an impeller disk is proposed with at least one region extending at least in sections from radially inwards to radially outwardly, in which at least sections a blade connection surface is formed for attaching an axial end face of at least one impeller blade.
  • the blade attachment surface extends at least partially within the curved region of the impeller within a two-dimensional fixed connection plane.
  • the connection level is clearly defined on one level in advance and corresponds to a predefined level in the room. Due to the fact that the blade connecting surface extends exclusively within one plane, it can be provided that the axial end edges of the to be fastened
  • Fan blades are also only along this one connection level and therefore not spatially curved or spherical cut off. About a straight cut along the axial end edges of
  • Fan blades in this one predefined plane the end edges can be brought into a shape suitable for the impeller or the attachment surfaces of the impeller disk.
  • the axial end edges of the impeller blades therefore have the same course as each of the attachment surfaces of the impeller disk and can be set and fastened, for example welded, to the attachment surfaces without further processing steps.
  • a plurality of corresponding attachment surfaces for a corresponding number of impeller blades are provided in the circumferential direction.
  • Blower wheel along the at least one blade connection surface is at least partially plastically deformed.
  • the plastic deformation makes it possible to adapt the geometry of the impeller wheel precisely in the region of the connection of the fan impeller blades without influencing the other areas in terms of flow technology.
  • the at least one blade attachment surface of the blower wheel disk is formed in a press-in section, which is pressed into the blower wheel disk in the axial direction by plastic deformation.
  • the axial direction here is the direction along the Rota- tion axis of the impeller wheel defined.
  • different axial press-in depths can be realized via the press-fit section in order to configure the spatial extent of the connection surfaces within the one connection plane, even if the blower wheel geometry has strong spatial curvatures in cross-section. This means that the extent of the disk body of the impeller wheel can run in other planes and, above all, curved, whereas the blade connecting surface extends exclusively in the connecting plane.
  • the press-in section has a deformation section which is plastically deformed in the axial direction and axially projecting relative to a disk surface, which extends along the connection plane. This means that the plastic deformation of the
  • Impeller disk for generating the blade connection surfaces is so strong that the deformation sections on one axial side of the
  • Blower wheel disc which is opposite to the side on which the impeller blades are arranged.
  • the formation of a protruding deformation section expands the geometrical adaptability of the blade attachment surfaces of the impeller wheel, so that an extension within the one connection plane can be realized, even if the curvature of the disk body of the impeller wheel is strongly or discontinuously curved in the region of the disk attachment surfaces.
  • the profile of the press-in section is adapted via the deformation section so that the connection surfaces along the one blade connection plane for the end edges of the fan wheel blades run independently of the extent of the adjacent disk surface body.
  • the deformation section as viewed in the circumferential direction, has an inlet section for the flow, which forms a rounded section. formed on the leading edge.
  • the deformation section along its Clearre- ckung in the circumferential direction has a variable width.
  • an embodiment is advantageous in which the deformation section has an essentially oval shape or a cross-sectional shape of an airfoil profile in an axial plan view.
  • the latter is also an example of the embodiment variant also included, in which the width of the deformation section along its extension in the circumferential direction in a discharge section is reduced in terms of flow.
  • the impeller wheel according to the invention can basically be used as a bottom disk or cover disk of an impeller, wherein the bottom disks usually have a large area horizontally flat portion in which there is no problematic spatially curved geometry.
  • the cover plates are often strongly curved from radially inward to radially outward. Such a curvature is present in a funnel-shaped to the axis of rotation tapered impeller wheel, which represents an embodiment of the invention.
  • Part of the invention is an impeller constructed in several parts, which comprises at least one impeller wheel, which has any combination of features of the features described above.
  • the impeller typically includes a plurality, but at least one fan impeller having first and second axial end edges.
  • one of the axial end edges has a form corresponding to the press-fit section of the impeller disk.
  • a corresponding shaping is generally providable both on a cover and bottom plate, are formed in the press-in sections corresponding to two discs and end edges of the fan wheel blades. The invention is then applied both to the cover disc as well as on the bottom disc. Also the lengthening of the
  • Fan blades are in such a case at both axial end edges in one plane.
  • the impeller it is advantageously provided that at least one of the axial end edges of the at least one impeller blade extends completely along the connection plane. This ensures that the front edge of the blade connection surface on the
  • Fan blades are therefore cut along their front edge so that they are geometrically adapted to the respective blade connection surface of the impeller wheel and the end edge surface and
  • Blade connection surface in the same plane.
  • the front edge of the at least one fan wheel blade facing the blower wheel disk extends completely within the press-in section of the blower wheel disk and bears against the blade attachment surface on the axial side.
  • the blade connection surface is determined by the axial bottom surface of the press-in section.
  • About the axial depth of the press-in and its related course is also a geometrical adaptation of the blade attachment surface to the front edge of the impeller blade in one and the same plane possible.
  • the axial end edge of the at least one fan wheel bucket is curved in an axial plan view.
  • Curved fan blades are easy to implement because their front edges are not only cut along a line, but along a specified plane.
  • the shaping of the attachment surfaces, press-fit sections and / or deformation sections then preferably have a correspondingly curved shape.
  • Figure 1 is a bottom view of a blower wheel.
  • FIG. 2 is a side view of the impeller wheel of FIG. 1;
  • FIG. 1 is a bottom view of a blower wheel.
  • Fig. 3 is a side view of an impeller with a
  • Blower wheel disk according to FIGS. 1 and 2.
  • an impeller 1 is formed as a cover plate in a view from below and a side view.
  • R central area In the lying around the axis of rotation R central area has the
  • Blower wheel disk 1 has a flow opening 2.
  • the disk body of the blower wheel disk 1 is funnel-shaped and has a region 3, which defines the funnel shape and extends from radially inward to radially outward.
  • the disk body transitions from an extension on the radial peripheral edge 22, which essentially corresponds to a radial plane, into an extension at the flow opening edge 21, which essentially corresponds to an axial plane.
  • a plurality of circumferentially spaced blade connection surfaces 4 are formed, to which axial end faces of fan blades are attached, as shown by way of example in FIGS. 3 and 4.
  • Each of the blade connection surfaces 4 extends over its entire length from radially inward to radially outward along the defined connection plane E.
  • Each blade connection surface 4 is in a press-in section 6 plastically deformed into the disk surface 9, in each case on the axial bottom surface formed of the respective press-in section 6.
  • the plastic deformation of the press-in sections 6 penetrates the entire disk body and forms on the axially opposite side of the disk surface 9 in each case an axially projecting deformation section 7, which extends in each case along the connecting plane E, as can be seen in Figure 2.
  • the disk attachment surfaces 4 axially opposite outer surfaces 14 extend parallel to the disk connection surfaces 4.
  • the disk connection surfaces 4 extend in the embodiment shown from radially inside to radially outside and in the circumferential direction over an angle of about 30 °.
  • the press-in sections 5 extend from the radial peripheral edge 22 as far as a radially inner region of the impeller disk 1 in which its profile merges into an exclusive axial extension.
  • the disk connection surfaces 4 each have, in an axial plan view, the shape of an airfoil profile with a maximum width B, the disk connection surfaces 4 tapering off from the maximum width B in both flow directions.
  • the deformation sections 7 each have an inlet section 11 with a rounded leading edge 13 and a substantially tapered outlet section 12.
  • FIG. 3 shows a side view of an impeller 30 with an impeller wheel 1 according to FIGS. 1 and 2.
  • the impeller 30 has a plurality of circumferentially spaced impeller blades 16 which are secured with their respective lower axial end edge on the bottom plate 17 and with their respective upper axial end edge on the impeller disk 1 designed as a cover disk.
  • the upper axial end edges extend over the full area adjacent to the disk connection surfaces 4 within the press-in sections 6 and thus along the connection plane E.
  • the fan wheel blades 16 penetrate with it their axial Stinkanten the disk body of the impeller wheel 1 and are enclosed by the deformation sections 7.
  • the upper end edge surfaces of the fan wheel blades 16 have a shape corresponding to the disk connection surfaces 4, so that in this regard reference is made to the shape of the disk connection surfaces 4 in FIG. In this case, the curved shape of each of the impeller blades 16 is traceable.
  • the impeller blades 1 are spaced radially inwardly from a radial peripheral edge of the bottom disk 17.
  • the fan wheel blades 16, like the disk connection surfaces 4 extend up to their radial peripheral edge 22 and in the exemplary embodiment shown are substantially flush.

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 disque de roue de ventilateur comprenant au moins une zone s'étendant de manière courbe au moins dans certaines parties depuis radialement à l'intérieur vers radialement à l'extérieur, zone dans laquelle est formée au moins dans certaines parties une surface de raccordement de pale servant à raccorder en la fixant une face frontale axiale d'au moins une pale de roue de ventilateur, la surface de raccordement de pale s'étendant au moins dans certaines parties dans un plan de raccordement bidimensionnel à l'intérieur de la zone courbe du disque de roue de ventilateur. L'invention concerne également une roue de ventilateur comportant un disque de ce type.
EP17734033.8A 2016-06-28 2017-06-22 Disque de roue de ventilateur et roue de ventilateur Active EP3475580B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016111830.3A DE102016111830A1 (de) 2016-06-28 2016-06-28 Gebläseradscheibe und Gebläserad
PCT/EP2017/065463 WO2018001872A1 (fr) 2016-06-28 2017-06-22 Disque de roue de ventilateur et roue de ventilateur

Publications (2)

Publication Number Publication Date
EP3475580A1 true EP3475580A1 (fr) 2019-05-01
EP3475580B1 EP3475580B1 (fr) 2023-08-02

Family

ID=57699912

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17734033.8A Active EP3475580B1 (fr) 2016-06-28 2017-06-22 Disque de roue de ventilateur et roue de ventilateur

Country Status (5)

Country Link
US (1) US10920786B2 (fr)
EP (1) EP3475580B1 (fr)
CN (1) CN205876803U (fr)
DE (1) DE102016111830A1 (fr)
WO (1) WO2018001872A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017114679A1 (de) * 2017-06-30 2019-01-03 Ebm-Papst Mulfingen Gmbh & Co. Kg Gebläserad
DE102021119121A1 (de) * 2021-07-23 2023-01-26 Ebm-Papst Mulfingen Gmbh & Co. Kg Radial- oder Diagonallaufrad mit modifizierter Schaufelkante

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4874293A (en) * 1988-11-08 1989-10-17 Gutzwiller H Leslie Modified centrifugal airfoil fan wheel
US6156090A (en) * 1997-10-03 2000-12-05 Hitachi, Ltd. Air cleaner having vanes with a winglike cross-section between a shroud and baseplate for rotation within a housing
US6125920A (en) * 1997-10-16 2000-10-03 Herbert; Edward Fan with heat sink using stamped heat sink fins
DE19913259C1 (de) * 1999-03-24 2000-05-25 Ltg Lufttechnische Komponenten Verfahren zum Herstellen eines Laufrads eines Ventilators, sowie Laufrad für einen Ventilator
JP3391318B2 (ja) * 1999-11-16 2003-03-31 ダイキン工業株式会社 遠心ファン及び該ファンを備えた空気調和機
GB2360236B (en) * 2000-03-18 2003-05-14 Rolls Royce Plc A method of manufacturing an article by diffusion bonding and superplastic forming
JP3907983B2 (ja) * 2000-09-05 2007-04-18 エルジー エレクトロニクス インコーポレイティド 空気調和機用ターボファン
KR20040104772A (ko) * 2003-06-03 2004-12-13 삼성전자주식회사 터보팬 및 이를 갖춘 공기조화기
JP4432474B2 (ja) * 2003-11-27 2010-03-17 ダイキン工業株式会社 遠心送風機の羽根車及びそれを備えた遠心送風機
JP5007457B2 (ja) * 2005-10-31 2012-08-22 三菱電機株式会社 ターボファン
DE202011052411U1 (de) 2011-12-21 2013-03-22 Ebm-Papst Mulfingen Gmbh & Co. Kg Schaufelrad für Axialventilatoren oder Radial- und Diagonallüfter
DE102015101938A1 (de) * 2015-02-11 2016-08-11 Ebm-Papst Mulfingen Gmbh & Co. Kg Ventilatorrad und Ventilator
DE202015105729U1 (de) 2015-10-28 2015-11-10 Ebm-Papst Mulfingen Gmbh & Co. Kg Ventilatorrad und Ventilator
JP6314998B2 (ja) * 2016-01-18 2018-04-25 ダイキン工業株式会社 遠心ファンの羽根車

Also Published As

Publication number Publication date
US10920786B2 (en) 2021-02-16
WO2018001872A1 (fr) 2018-01-04
CN205876803U (zh) 2017-01-11
DE102016111830A1 (de) 2017-12-28
EP3475580B1 (fr) 2023-08-02
US20190120245A1 (en) 2019-04-25

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