EP0175809B1 - Rotor de ventilateur axial muni de pales individuellement réglables - Google Patents

Rotor de ventilateur axial muni de pales individuellement réglables Download PDF

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Publication number
EP0175809B1
EP0175809B1 EP19840111563 EP84111563A EP0175809B1 EP 0175809 B1 EP0175809 B1 EP 0175809B1 EP 19840111563 EP19840111563 EP 19840111563 EP 84111563 A EP84111563 A EP 84111563A EP 0175809 B1 EP0175809 B1 EP 0175809B1
Authority
EP
European Patent Office
Prior art keywords
rotor
hub
rotor hub
slot
outer edge
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.)
Expired
Application number
EP19840111563
Other languages
German (de)
English (en)
Other versions
EP0175809A1 (fr
Inventor
Gert Hecht
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Priority to DE8484111563T priority Critical patent/DE3464645D1/de
Priority to EP19840111563 priority patent/EP0175809B1/fr
Priority to DK414785A priority patent/DK160955C/da
Publication of EP0175809A1 publication Critical patent/EP0175809A1/fr
Application granted granted Critical
Publication of EP0175809B1 publication Critical patent/EP0175809B1/fr
Expired 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
    • F04D29/36—Blade mountings adjustable
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/30—Fixing blades to rotors; Blade roots ; Blade spacers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D7/00—Rotors with blades adjustable in operation; Control thereof
    • 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
    • F05D2260/00—Function
    • F05D2260/70—Adjusting of angle of incidence or attack of rotating blades
    • F05D2260/74—Adjusting of angle of incidence or attack of rotating blades by turning around an axis perpendicular the rotor centre line
    • 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
    • F05D2260/00—Function
    • F05D2260/70—Adjusting of angle of incidence or attack of rotating blades
    • F05D2260/76—Adjusting of angle of incidence or attack of rotating blades the adjusting mechanism using auxiliary power sources

Definitions

  • the invention relates to an impeller for an axial fan with individually adjustable blades according to the preamble of claim 1; such an impeller is known from GB-A-853 564.
  • U-shaped wire brackets are provided for the actual operational fixing of the blades in the impeller hub, which comprise the plug pins inserted into the slot holes on their axially free side and by screwing their free leg ends in the impeller hub can be tightened against the spigot.
  • a collar radially overlapping the slot hole serves for the radial, positive guidance of the blades during their adjustment before the actual fixing by tightening the U-shaped wire bracket.
  • each blade is inserted radially with its plug pin into a bore in the outer edge of the impeller hub;
  • a screw can be screwed from the inner surface of the outer edge of the impeller hub into a blind hole with a cut thread in the axis of rotation of the plug-in pin;
  • a locking washer and a washer with a locking pin protruding radially against the locking washer and the foot surface of the pivot pin are arranged between the screw head and the lower foot surface of the plug pin pin holes parallel to the axis of rotation can be inserted in the foot surface of the plug pin and the locking washer.
  • the impeller is to be significantly simplified with regard to the manufacture and reliable assembly of its individual components.
  • a clear planar contact between the corresponding hub part and blade attachment part over the entire wing adjustment area can be ensured in a simple manner that, according to one embodiment of the invention, the inner surface of the outer edge of the impeller hub in the manner of a polygon corresponding to the number of blades with contact surfaces for the parts to be determined the mounting flange is formed.
  • a particularly simple screw fastening of the blades via the mounting flanges formed on their trunnions in the outer edge of the impeller hub is possible in that the screws are each provided with the fastening flange against the inner surface of the outer edge of the impeller hub, which are tightened by nuts on the inner surface attached side guide bars can be inserted against rotation.
  • a further advantageous embodiment of the invention is characterized by a hub ring that can be plugged onto the impeller hub from axially backwards with axial counter-slot openings to the axial slot openings provided in the impeller hub with the axially inserted pivot pins.
  • the impeller contains, inter alia, an inner hub body 14 which is screwed onto the drive shaft 15 and the actual impeller hub 4 with the inserted blades 1 and a hub ring 12 which is screwed onto the inner hub body 14.
  • a plug pin 11 with a mounting flange is integrally attached to the bottom of each blade 1 2 molded. To hold the blades 1 via their plug pins 11 and their mounting flanges 2 - as can be seen in particular from FIG.
  • Each blade insertion point is assigned a bore 7 in the outer edge of the impeller hub 4 and an elongated hole 21 in the fastening flange 2 through which a screw 3 can be inserted, which is supported with its screw head on the outer surface 41 of the outer edge of the impeller hub 4 and one radially Has on the inside of the mounting flange 2 nut 31 which is secured against twisting by two lateral guide webs 8, 8 formed on the mounting flange 2.
  • each blade e.g. B. by hand, set to the desired blade angle
  • the screw 3 and the elongated hole 21 move rotatively to each other.
  • the screw 3 is tightened from the outside or screwed into the non-rotatably mounted nut 31 and thus the blade 1 is fixed in its intended position.
  • 4 setting markings 9 are provided on the impeller hub in the area of the tip of the blade 1 which moves during the adjustment.
  • the slot openings 5 can be closed in the sense of an air line that is as trouble-free as possible and targeted air delivery can be ensured on the downstream side; in the same way as provided for the impeller hub 4, 12 markings can also be provided on the hub ring.
  • the adjustable blade attachment receiving actual impeller hub 4 is a further manufacturing and assembly simplification possible, since the necessary variants of Components can remain limited to the inner hub body 14 designed as a turned part.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Claims (5)

1. Rotor de ventilateur axial comportant des pales (1) réglables individuellement, qui sont maintenues, de façon à pouvoir tourner, respectivement dans un trou en forme de fente (5) s'ouvrant axialement vers l'aval, dans le bord extérieur du moyeu (4) du rotor, en étant enfichées au moyen d'un pivot d'enfichage (11) formé par façonnage sur le pied de la pale et débordant radialement vers l'intérieur par rapport au trou en forme de fente (5), et peuvent être fixées au moyen d'une fixation par boulonnage dans une position de réglage déterminée par rapport au moyeu (4) du rotor, caractérisé par le fait que pour la fixation par boulonnage des pales (1), une bride de fixation (2), qui déborde radialement vers l'intérieur par rapport au trou en forme de fente (5) et comporte une lumière allongée (21) concentrique dans l'axe de rotation de la pale (1), est formée par façonnage sur les pivots d'enfichage (11) des pales, et les pales (1) peuvent être bloquées par serrage dans leur position de réglage contre la surface intérieure (42) du moyeu (4) du rotor, par l'intermédiaire d'un boulon (3) qui prend appui sur une surface extérieure (42) du moyeu (4) du rotor et peut être manipulé et s'étend à travers un perçage (7) du moyeu (4) du rotor et à travers la lumière allongée (21).
2. Rotor suivant la revendication 1, caractérisé par le fait que la surface intérieure (42) du bord extérieur du moyeu (4) du rotor est réalisée sous la forme d'un polygone qui correspond au nombre des pales (1) et qui comporte des surfaces d'application (6) pour les pièces pouvant être bloquées de la bride de fixation (2).
3. Rotor suivant la revendication 1 ou 2, caractérisé par le fait que les boulons (3) sont équipés d'écrous (31) fixant respectivement la bride de fixation (2) contre la surface intérieure (42) du bord extérieur du moyeu (4) du rotor et qui sont insérés avec blocage en rotation dans des barrettes latérales de guidage (8, 8) montées sur la surface intérieure (42).
4. Rotor suivant l'une des revendications 1 à 3, caractérisé par un anneau (12) du moyeu, emmanché, du côté aval, sur le moyeu (4) du rotor et comportant des ouvertures antagonistes en forme de fentes (13) situées en vis-à-vis des trous en forme de fentes (5) du moyeu (4) du rotor.
5. Rotor suivant l'une des revendications 1 à 4, caractérisé par un moyeu réalisé en deux éléments et comportant un corps intérieur (14) adaptable individuellement à différentes dimensions hors tout et conditions d'utilisation, réalisé sous la forme d'une pièce tournante et relié à l'arbre d'entraînement (15), et un moyeu proprement dit (4) du rotor, concentrique au corps intérieur (14) du moyeu et fixé à ce dernier et réalisé sous la forme d'un composant universel uniforme et contenant le dispositif de fixation réglable des pales.
EP19840111563 1984-09-27 1984-09-27 Rotor de ventilateur axial muni de pales individuellement réglables Expired EP0175809B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE8484111563T DE3464645D1 (en) 1984-09-27 1984-09-27 Rotor for an axial-flow ventilating fan having individually adjustable blades
EP19840111563 EP0175809B1 (fr) 1984-09-27 1984-09-27 Rotor de ventilateur axial muni de pales individuellement réglables
DK414785A DK160955C (da) 1984-09-27 1985-09-12 Skovlhjul til en aksialventilator med enkeltvis indstillelige skovle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19840111563 EP0175809B1 (fr) 1984-09-27 1984-09-27 Rotor de ventilateur axial muni de pales individuellement réglables

Publications (2)

Publication Number Publication Date
EP0175809A1 EP0175809A1 (fr) 1986-04-02
EP0175809B1 true EP0175809B1 (fr) 1987-07-08

Family

ID=8192181

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19840111563 Expired EP0175809B1 (fr) 1984-09-27 1984-09-27 Rotor de ventilateur axial muni de pales individuellement réglables

Country Status (3)

Country Link
EP (1) EP0175809B1 (fr)
DE (1) DE3464645D1 (fr)
DK (1) DK160955C (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007034618A1 (de) 2007-07-25 2009-01-29 Georg Hamann Vorrichtung zur Erzeugung von Energie aus einer Fluidströmung

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB114934A (fr) * 1900-01-01
CH260170A (fr) * 1947-04-08 1949-02-28 Mertz Alfred Roue pour ventilateur hélicoïdal.
GB634486A (en) * 1947-12-11 1950-03-22 Walker Brothers Wigan Ltd Improvements in or relating to axial flow ventilating fans
GB826519A (en) * 1957-05-10 1960-01-13 Air Control Installations Ltd Improvements in or relating to axial flow fans
GB853564A (en) * 1958-07-17 1960-11-09 Roy William Brown A M I Mech E Improvements in or relating to axial flow fans
FR1207918A (fr) * 1958-07-24 1960-02-19 Hudson Engineering Corp Dispositif d'accouplement perfectionné pour ailettes de ventilateur
DE1503628B2 (de) * 1965-10-22 1974-06-27 Turbon Ventilatoren- Und Apparatebau Gmbh, 1000 Berlin Flügelrad
DE1426883A1 (de) * 1965-12-17 1969-01-23 Voith Getriebe Kg Schaufelbefestigung
DE2054826A1 (de) * 1970-11-07 1972-05-10 Siemens Ag Verfahren zum Herstellen von Klemmringen und Nabenkörpern aus Guß oder Kunststoff für Flügelräder
US3984194A (en) * 1974-04-12 1976-10-05 Aktiebolaget Svenska Flaktfabriken Axial flow fans
DE2719099C2 (de) * 1977-04-29 1983-09-29 Helios-Apparatebau KG, Müller & Co, 7730 Villingen-Schwenningen Lüfterrad

Also Published As

Publication number Publication date
DK414785D0 (da) 1985-09-12
EP0175809A1 (fr) 1986-04-02
DK414785A (da) 1986-03-28
DK160955B (da) 1991-05-06
DE3464645D1 (en) 1987-08-13
DK160955C (da) 1991-10-28

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