EP0114023A2 - Montage des pales d'un ventilateur axial entraîné par un moteur de type plat - Google Patents

Montage des pales d'un ventilateur axial entraîné par un moteur de type plat Download PDF

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Publication number
EP0114023A2
EP0114023A2 EP83710078A EP83710078A EP0114023A2 EP 0114023 A2 EP0114023 A2 EP 0114023A2 EP 83710078 A EP83710078 A EP 83710078A EP 83710078 A EP83710078 A EP 83710078A EP 0114023 A2 EP0114023 A2 EP 0114023A2
Authority
EP
European Patent Office
Prior art keywords
blade
rotor
axial fan
flange
fan according
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.)
Withdrawn
Application number
EP83710078A
Other languages
German (de)
English (en)
Other versions
EP0114023A3 (fr
Inventor
Helmut Büsse
Willy Dipl.-Ing. Bürger
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.)
Fischbach & Cokg GmbH
Original Assignee
Fischbach & Cokg 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 Fischbach & Cokg GmbH filed Critical Fischbach & Cokg GmbH
Publication of EP0114023A2 publication Critical patent/EP0114023A2/fr
Publication of EP0114023A3 publication Critical patent/EP0114023A3/fr
Withdrawn legal-status Critical Current

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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
    • F04D29/32—Rotors specially for elastic fluids for axial flow pumps
    • F04D29/34—Blade mountings
    • 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
    • F04D25/0653—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump the motor having a plane air gap, e.g. disc-type

Definitions

  • the invention relates to an axial fan according to the preamble of claim 1.
  • the fan wheel In the known axial fans of this type, the fan wheel consists of an encircling, closed hub and integrally formed fan blades running radially outwards.
  • the fan wheel is attached to the rotor disk of the disk armature motor with its hub.
  • the rotating hub absorbs the centrifugal forces of the fan blades.
  • Such fan wheels have so far been made by chill casting.
  • a disadvantage of permanent mold casting is the relatively rough surface of the casting. This can lead to an increase in running noise in the case of high-speed fans. Die castings have a significantly smoother surface.
  • a disadvantage of the die casting process, however, is the high cost of producing the die.
  • the invention has for its object to develop an axial fan of the type mentioned, in which the fan wheel can be manufactured in the die casting process, without this leading to an increase in the cost of production.
  • an axial fan is proposed according to the preamble of claim 1 according to the features mentioned in the characterizing part of claim 1.
  • the fan wheel only consists of a larger number of independent, identical blade units, only a single, relatively small die-casting mold is required for the manufacture of the blade wheels. This has a favorable effect on the production costs of the axial fan, in particular when one takes into account that different fan wheels are often required, which differ in their size or the shape of their blades. Another advantage is that in the event of casting defects, the casting that occurs as a scrap is relatively small.
  • FIG. 4 shows an axial fan according to the invention in section, the lower half of the section which is rotationally symmetrical with respect to the axis of rotation 9 being largely omitted.
  • the likewise non-rotating stand 6 of the disc armature motor is fitted on the fixed shaft 7, the likewise non-rotating stand 6 of the disc armature motor is fitted.
  • the rotor of the disk armature motor which consists essentially of the bearing housing 17 and the rotor disk 3, sits on the shaft by means of two ball bearings 15, 16.
  • the rotor disk 3 in turn consists of the electrically active part 33, a mounting flange 34 belonging to the bearing housing 17 and an encircling ring 35 (see FIG. 5).
  • the electrically active part which is not shown in detail, consists of the laminated dynamo sheet body with the electrical short-circuit winding of the rotor.
  • a blade unit consisting essentially of the blade, blade 1 and blade flange 2 is fastened via its flange by means of a screw 12 in a threaded hole on the side 4 of the rotor disc facing away from the air gap 20 of the disc armature motor.
  • the blade unit shown in FIG. 1 essentially consists of the blade 1 and the blade flange 2 formed on the base of the blade. In its radial projection, this blade unit has essentially the shape (1 and 2 in FIG. 2) of two straight strip strips which are located below one another cut the angle of attack of the airfoil. To reinforce the passage point of the fastening screw 12 through the blade flange, an eye 13 is provided thereon.
  • two dowel pins 22 are present in the exemplary embodiment shown in FIGS. 2 and 3 on the side of the blade flange intended for contact with the rotor disk, which engage in corresponding fitting holes in the rotor disk .
  • the blade root on its side facing the rotor disk can be provided with a preferably rectangular projection lying on a circle around the axis of rotation 9, which protrudes into a correspondingly located and dimensioned fitting groove the outside 4 of the rotor disk can intervene.
  • grooves lying on the same radii are conceivable in the adjacent sides of the blade root and rotor disk, into which a feather key can be inserted.
  • the basic design of the blade unit shown in FIG. 1 can be supplemented by wall parts 5 (see FIGS. 2 and 4) which extend between the intersecting edges 25, 26 of the blade leaf and blade flange.
  • These wall parts 5 can be dimensioned such that they extend in the circumferential direction of the fan over the full division of a blade unit and in the axial direction over the full axial extent of the airfoil.
  • the main advantage of these wall parts is that vortices, which lead to noise and friction losses, are avoided.
  • a force-transmitting function between S chaufelfuß and blade comes to their only slightly. Their dimensioning can be chosen accordingly.
  • the part 28 shown in Figure 4 is a reinforcing rib.
  • the lateral edges 24 of the blade feet and / or the axially parallel edge surfaces 27 (FIG. 2) of the wall parts 5 can also be used if the blade feet or the wall parts 5 are dimensioned such that they are immediate against which the adjacent blade units rest.
  • Balancing wedges can be provided between the blade feet and / or the wall parts 5 of adjacent blade units.
  • FIG. 5 shows an exemplary embodiment for the shaping and attachment of a water-protecting plate 30 of the aforementioned type.
  • the plate 30, which extends over the entire circumference of the disc armature motor, is angled twice, one flange 36 being used for fastening to the circumference of the stand 6.
  • the annular groove 32 is provided in the encircling ring 35.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP83710078A 1982-11-18 1983-11-11 Montage des pales d'un ventilateur axial entraíné par un moteur de type plat Withdrawn EP0114023A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3242530 1982-11-18
DE3242530 1982-11-18

Publications (2)

Publication Number Publication Date
EP0114023A2 true EP0114023A2 (fr) 1984-07-25
EP0114023A3 EP0114023A3 (fr) 1985-05-15

Family

ID=6178368

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83710078A Withdrawn EP0114023A3 (fr) 1982-11-18 1983-11-11 Montage des pales d'un ventilateur axial entraíné par un moteur de type plat

Country Status (1)

Country Link
EP (1) EP0114023A3 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2240621A (en) * 1990-01-31 1991-08-07 Toshiba Kk Ventilating fan
WO2010061195A1 (fr) * 2008-11-28 2010-06-03 Truflo Air Movement Limited Ensemble ventilateur
WO2021259429A1 (fr) * 2020-06-25 2021-12-30 Ziehl-Abegg Se Ventilateur et pale et hélice pour ventilateur

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE673592A (fr) *
FR1530959A (fr) * 1967-07-11 1968-06-28 Korrokunststoff Korrosionstecn Ventilateur radial

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2240621A (en) * 1990-01-31 1991-08-07 Toshiba Kk Ventilating fan
GB2240621B (en) * 1990-01-31 1993-10-20 Toshiba Kk Ventilating fan
WO2010061195A1 (fr) * 2008-11-28 2010-06-03 Truflo Air Movement Limited Ensemble ventilateur
WO2021259429A1 (fr) * 2020-06-25 2021-12-30 Ziehl-Abegg Se Ventilateur et pale et hélice pour ventilateur

Also Published As

Publication number Publication date
EP0114023A3 (fr) 1985-05-15

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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AK Designated contracting states

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Effective date: 19851019

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Effective date: 19860721

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18W Application withdrawn

Withdrawal date: 19870121

RIN1 Information on inventor provided before grant (corrected)

Inventor name: BUESSE, HELMUT

Inventor name: BUERGER, WILLY, DIPL.-ING.