EP0196450B1 - Régulateur de la résistance d'un courant d'air - Google Patents

Régulateur de la résistance d'un courant d'air Download PDF

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Publication number
EP0196450B1
EP0196450B1 EP86102392A EP86102392A EP0196450B1 EP 0196450 B1 EP0196450 B1 EP 0196450B1 EP 86102392 A EP86102392 A EP 86102392A EP 86102392 A EP86102392 A EP 86102392A EP 0196450 B1 EP0196450 B1 EP 0196450B1
Authority
EP
European Patent Office
Prior art keywords
guide
adjuster according
adjusting
pins
guide vanes
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
EP86102392A
Other languages
German (de)
English (en)
Other versions
EP0196450A1 (fr
Inventor
Lothar Dipl.-Ing. Thomzik
Erwin Dipl.-Ing. Lange
Gert Ing.-Grad. 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
Publication of EP0196450A1 publication Critical patent/EP0196450A1/fr
Application granted granted Critical
Publication of EP0196450B1 publication Critical patent/EP0196450B1/fr
Expired legal-status Critical Current

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Classifications

    • 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
    • F01D17/00—Regulating or controlling by varying flow
    • F01D17/10—Final actuators
    • F01D17/12—Final actuators arranged in stator parts
    • F01D17/14—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits
    • F01D17/16—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits by means of nozzle vanes
    • F01D17/162—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits by means of nozzle vanes for axial flow, i.e. the vanes turning around axes which are essentially perpendicular to the rotor centre line
    • 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
    • F04D29/56—Fluid-guiding means, e.g. diffusers adjustable
    • F04D29/563—Fluid-guiding means, e.g. diffusers adjustable specially adapted for elastic fluid pumps

Definitions

  • the invention relates to a swirl regulator according to the preamble of claim 1;
  • a swirl controller is known from DE-AS 2 637 222.
  • Such a swirl controller is usually arranged in the inlet nozzle of a fan, blower or the like.
  • By adjusting its guide vanes, which are rotatably arranged in a hub the pre-twist of the flow entering the downstream impeller of the fan, blower or the like can be regulated.
  • the adjusting ring is designed with incorporated axial slots that are open at the end, the boundary walls of which serve as guide surfaces for ball heads guided between them without play at one end of dumbbell-shaped adjusting levers, the other ends of which extend radially through a bore is inserted from a bearing housing receiving the adjusting ring and is connected to the radially inner ends of the guide vanes.
  • a reduction in the necessary actuating forces is to be achieved in that the axis of rotation of each guide vane is tilted by approximately 10 to 2 ° relative to its radial line of symmetry.
  • the guide vanes are rotatably attached to a spoke-like mounting linkage for the hub by means of tabs screwed onto the guide vanes.
  • An adjusting lever is attached to each radially inner tab, and an angled cam is provided at the free end thereof.
  • the rotary movement of the adjusting ring is transmitted to the adjusting levers via guide grooves embedded in its surface, in which the cams slide.
  • the adjusting ring is designed in the manner of a truncated cone with a guide plane inclined at a certain angle to the cams.
  • the adjusting lever itself is shaped like a circular arc and the cam is attached to it in such a way that its longitudinal axis intersects with the longitudinal axis of the mounting linkage in the longitudinal axis of the adjusting ring.
  • the adjustment ring is actuated via a radially arranged lever, which is connected to a guide on the outer edge of the inlet nozzle surrounding the guide vanes, which guide has stops for the end setting positions of the guide vanes.
  • the invention has for its object to provide a swirl controller which ensures precise and easy adjustment of the guide vanes, even over long operating times, with much simpler production.
  • a swirl controller enables, by means of the pins which can be manufactured as separate construction parts and which can be mounted on the guide vanes or the adjusting ring with little manufacturing effort, great ease of movement between the adjusting and guiding means for adjusting the guide vanes and thus for adjusting the desired pre-twist the inlet flow.
  • This smooth operation is guaranteed even after a long period of operation, since undercuts and large guide surfaces between the adjusting and guiding means are avoided, which would otherwise increase the friction and thus the necessary actuating forces due to contamination.
  • the guide pins or setting pins are cylindrical in a particularly simple manner in terms of production and assembly technology and at the same time ensure a movement that does not tilt each other.
  • guide pins or adjusting pins are inserted into corresponding openings in the guide vane or adjusting ring and screwed or welded there.
  • the adjusting ring consists only of a rotatably mounted stamped sheet metal part guided on the outer surface of the hub with stamped insertion openings for the insertion of guide pins.
  • a driving frame facing the adjusting ring is formed on its radially inner end, to which an adjusting pin is attached.
  • the guide pins or the adjusting pins are cylindrical, the guide pins advantageously being arranged essentially in the axial direction and the adjusting pins essentially in the radial direction or respectively for each guide vane two guide pins on the adjusting ring and an adjusting pin engaging between the guide pins on the guide vane are attached directly or indirectly.
  • the adjusting pin is arranged laterally offset relative to the radial surface symmetry line of the guide vanes.
  • the limitation of the maximum opening or closing position of the guide vanes can be achieved without special constructive measures in that between the adjusting pins and the associated guide pins in the middle position of the rotatable guide vanes there is a game such that the guidance between the adjusting pins and the associated ones Guide pins in each of the two end positions of the adjustable guide vanes in the sense of an end stop is without play.
  • a radially projecting tab serving for its rotatable mounting is attached to each radial end of each guide vane; is provided according to an embodiment of the invention that each of the guide vane, the driving frame and the tabs parts of a one-piece sheet metal bending partly, not only the adjusting ring, but also the guide vanes with tabs and, if necessary, driving frames can be contour-stamped on so-called nibbling on numerically controlled machines.
  • the punched tabs can either be bent slightly, eg semicircular, for rotatable guidance; A particularly simple and precise guidance results, however, if, according to one embodiment of the invention, a bearing journal is attached to each of the tabs of the guide vanes and in the hub of the swirl regulator or in an inlet nozzle of the associated fan, blower or the like to the bearing journal on the radial
  • Corresponding bearing bushes are provided on the inner or radially outer end of the guide vanes and in each case the bearing journals and / or the bearing bushes consist of plastic with high sliding properties, for example polyamide or Teflon.
  • each guide vane is not or is inclined by an axial angle of more than 6 ° with respect to its radial surface symmetry line, and when the guide vanes are open, the larger of the parts of the guide vane identified by the connecting line Impeller of the downstream fan, blower or the like.
  • a tensile-stressed Bowden cable is provided for the actuation of the adjusting ring in accordance with one embodiment of the invention without a conventional rigid drive linkage.
  • the Bowden cable advantageously allows the adjustment force to be introduced at any point in the swirl controller construction.
  • a Bowden cable adjustment is expediently provided for adjusting both swirl regulators in the same direction.
  • guide vanes 2 produced as sheet metal stamped and bent parts are arranged radially around a hub 4; For the sake of clarity, only a single guide vane 2 is shown in each case.
  • a radially projecting tab 21 or 22 is stamped in one piece at its radially inner or radially outer end.
  • each guide vane 2 has at its radially inner end a driving frame 23 which is likewise stamped in one piece and then axially bent.
  • the radially inner tab 21 is punched out centrally on the driving frame 23 at its end facing the guide vane 2; At the free axially bent end of the driving frame 23, laterally offset from the connecting line 25 between the tabs 21, 22, an adjusting pin 7 directed parallel to it is fastened.
  • the setting pin 7 engages between two essentially axially directed guide pins 5, 6, which are inserted into fitting openings 31 of an adjusting ring 3 and are screwed or welded to the latter, for example.
  • the adjusting ring 3 is mounted between two sliding disks 16 and is axially pressed and fixed against a shoulder of the hub via an expansion ring 17 which can be fixed in the hub with the interposition of a corrugated spring 11.
  • the central adjustment of all guide vanes 2 takes place by turning the adjustment ring 3 by means of a Bowden cable 10, which is articulated via a ball joint 19 in an opening 32 of the adjustment ring 3.
  • the Bowden cable 10 is tension-loaded by means of a spring 18, so that a clear adjustment of the guide vanes 2 is possible at a standstill.
  • the guide vane 2 is shown in FIG. 1 in the closed state, ie in the angular position 0 ° .
  • the guide vanes 2 of the swirl regulator are opened by turning the adjusting ring 3 counterclockwise. From the play-free closing stop position of the actuating pin 7, the latter is carried along by the guide pins 5, 6.
  • the setting pin 7 first moves closer to the adjusting ring 3 between the guide pins 5, 6 during the opening process. From the position in which the setting pin 7 is exactly radial to the hub 4, the setting pin 7 begins to move back towards the guide vane 2 as it rotates further. In this position of the swirl controller, which is just half open, the greatest play between adjusting pin 7 on the one hand and guide pins 5, 6 on the other hand is achieved.
  • the angular position 90 ° in which the guide vanes 2 are currently in the sailing position, the opening stop has been reached and the actuating pin 7 is now kept free of play between the guide pins 5, 6.
  • the actuating and guide pins 7, 5, 6 shown in the exemplary embodiment are cylindrical in shape; As a result, particularly simple manufacture is achieved in order to achieve mutual point-to-point contact in operation.
  • the guide vanes 2 are used for the rotatable mounting on their flat tabs 21, 22 bearing pins 12, 13 are plugged, which are rotatably inserted into corresponding bearing bushes 14, 15 in the hub 4 or an inlet nozzle 9 (FIG. 4).
  • the radially inner bearing bush 14 is inserted into an axial, U-shaped cutout 41 of the hub 4, which is open at the end in the mounting direction and is fixed by a retaining ring 1 placed opposite at the end and closing off all the cutouts. It is thus possible to insert the guide vanes 2 into the inlet nozzle 9 only after the hub 4 has been installed.
  • the connecting line 25 between the radially outer and the radially inner rotatable mounting of each guide vane 2 is inclined by an axis angle ⁇ of more than 6 ° with respect to its radial surface symmetry line 24 and when the guide vanes 2 are open in each case the larger of the parts of the guide vane 2 identified by the connecting line 25 faces the impeller of the downstream fan, blower or the like, and that on the other hand the Bowden cable 10 is tension-loaded by a spring 18 securing the open position of the guide vanes 2.
  • each guide vane 2 coincides with its radial surface line of symmetry 24
  • the Bowden cable 10 is expediently subjected to tensile stress by a spring 18 securing the closed position of the guide vanes 2.
  • the attachment of the swirl controller to a stand 51 is shown in FIG. 3.
  • the hub 4 is screwed to a holding plate 8. This is fastened to the stand 51 via a fastening bracket 50.
  • An elongated dimensioning of the holes for the connecting screws enables the holding plate 8 to be centered precisely.
  • the stand 51 can be located as a stem in front of the inlet nozzle 9. This possibility in particular facilitates the retrofitting of the swirl regulator, which then protrudes into the inlet nozzle 9, as it were.
  • the bearing 20 serves to receive and hold the drive shaft of the impeller of the fan, blower or the like.
  • Fig. 4 shows a part of the inlet nozzle 9 of the fan.
  • the outer bearing bushes 15 are used for the guide vanes 2.
  • Bores 91 in the inlet nozzle 9 and bores 81 in the holding plate 8 are used to hold assembly tools.
  • This assembly tool which in the simplest case can be formed from flat bars, holds the holding plate 8 in position during the construction of the swirl regulator and is removed after the assembly has been completed.

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

Claims (17)

1. Régulateur de mouvement tourbillonnaire pour un écoulement traversant axial dans des ventilateurs, des soufflantes ou analogues, comportant des moyens de réglage fixés, au niveau des extrémités intérieures, du point de vue radial, des aubes directrices (2) du régulateur, montées de façon à pouvoir tourner par rapport à un moyeu (4), disposées en dehors de l'axe de rotation des aubes et établissant un contact seulement ponctuel en fonctionnement avec un moyen de guidage d'une bague de réglage (3) montée de façon à pouvoir tourner autour du moyeu (4), pour réaliser le réglage des aubes directrices (2) pendant le fonctionnement, caractérisé par le fait que, comme moyen de guidage ou moyens de réglage, il est prévu, pour chaque aube directrice (2), deux tiges respectives de guidage (5, 6) sensiblement axiales, qui sont fixées, en tant que moyen de guidage ou moyens de réglage, sur la bague de réglage (3) et une tige de réglage sensiblement radiale, qui s'engage entre les tiges de guidage (5, 6), et qui est fixée sur l'aube directrice (2).
2. Régulateur de mouvement tourbillonnaire suivant la revendication 1, caractérisé par le fait que les tiges de guidage (5, 6) ou la tige de réglage (7) sont réalisées avec une forme cylindrique.
3. Régulateur de mouvement tourbillonnaire suivant la revendication 1 ou 2, caractérisé par le fait qu'un cadre d'entraînement (23) tourné vers la bague de réglage (3) et fixé sur la tige de réglage (7) est formé parfaçonnage d'un seul tenant sur l'extrémité, intérieure du point de vue radial, de chaque aube directrice (2).
4. Régulateur de mouvement tourbillonnaire suivant l'une des revendications 1 à 3, caractérisé par le fait qu'une languette (21, 22), qui fait saillie radialement et sert au support de chaque aube directrice (2) en permettant la rotation de cette dernière, est prévue sur chaque extrémité radiale de chaque aube directrice.
5. Régulateur de mouvement tourbillonnaire suivant la revendication 4, caractérisé par le fait que des tourillons respectifs (12, 13) sont enfichés sur les languettes (21, 22) des aubes directrices (2).
6. Régulateur de mouvement tourbillonnaire suivant la revendication 5, caractérisé par le fait que des coussinets de support (14, 15) correspondant aux tourillons (12, 13) situés sur l'extrémité intérieure ou extérieure, du point de vue radial, des aubes directrices (2), sont prévus dans le moyeu (4) du régulateur de mouvement tourbillonnaire ou dans une buse d'entrée (9).
7. Régulateur de mouvement tourbillonnaire suivant la revendication 6, caractérisé par le fait que les coussinets de support (14) associés aux languettes (21) ou associés au tourillon (12) situé sur l'extrémité, intérieure du point de vue radial, des aubes directrices (2), peuvent être insérés et fixés dans des évidements axiaux (41) du moyeu (4), ouverts frontalement.
8. Régulateur de mouvement tourbillonnaire suivant l'une des revendications 5 à 7, caractérisé par le fait que les tourillons 10, 13 et/ou les coussinets de support (14, 15) sont réalisés en une matière plastique possédant un coefficient de glissement élevé.
9. Régulateur de mouvement tourbillonnaire suivant l'une des revendications 4 à 6, caractérisé par le fait que respectivement l'aube directrice (2), le cadre d'entraînement (23) et es languettes (21, 22) font partie d'un élément de tôle d'un seul tenant formé par découpage et pliage.
10. Régulateur de mouvement tourbillonnaire suivant l'une des revendications 1 à 9, caractérisé par le fait que la bague de réglage (3) est constituée par une pièce de tôle découpée montée rotative en étant guidée sur la surface extérieure du moyeu (4) et comportant des ouvertures (31) permettant l'enfi- chage des tiges de guidage (5, 6).
11. Régulateur de mouvement tourbillonnaire suivant l'une des revendications 1 à 10, caractérisé par le fait que la tige de réglage (7) est disposée en étant décalée latéralement par rapport à la droite radiale (25) reliant les languettes (21, 22) des aubes directrices (2).
12. Régulateur de mouvement tourbillonnaire suivant l'une des revendications 1 à 11, caractérisé par le fait que la droite (25) de liaison entre le support rotatif extérieur, du point de vue radial, de chaque aube directrice (2) coincide avec l'axe radial de symétrie superficielle (24) de cette aube.
13. Régulateur de mouvement tourbillonnaire suivant l'une des revendications 1 à 11, caractérisé par le fait que la droite (25) de liaison entre le support rotatif extérieur, du point de vue radial, et le support rotatif intérieur, du point de vue radial, de chaque aube directrice (2) est inclinée d'un angle axial (p) de plus de 6° par rapport à l'axe radial de symétrie superficielle (24) de l'aube et que, lorsque les aubes directrices (2) sont dans la position ouverte, la partie la plus étendue des parties de l'aube directrice (2), caractérisées par la droite de liaison (25), est tournée vers le corps du ventilateur, de la fente ou analogue associé.
14. Régulateur de mouvement tourbillonnaire suivant la revendication 12 ou 13, caractérisé par le fait qu'un câble Bowden (10) chargé en traction est prévu pour l'actionnement de la bague de réglage (3).
15. Régulateur de mouvement tourbillonnaire suivant les revendications 12 et 14, caractérisé par le fait que le câble Bowden (10) est chargé en traction par un ressort (18) garantissant la position de fermeture des aubes directrices (2).
16. Régulateur de mouvement tourbillonnaire suivant les revendications 13 et 14, caractérisé par le fait que le câble Bowden (10) est chargé en traction par un ressort (18) garantissant la position d'ouverture des aubes directrices (2).
17. Régulateur de mouvement tourbillonnaire suivant l'une des revendications 1 à 16, caractérisé par le fait qu'entre les tiges de réglage (7) et les tiges de guidage associés (5, 6) il est prévu, respectivement dans la position centrale des aubes directrices réglables (2), un jeu tel que le guidage entre les tiges de réglage (7) et les tiges asociées de guidage (5, 6) s'effectue sans jeu, au sens d'une butée d'extrémité, dans chacune des deux positions d'extrémité des aubes directrices réglables (2).
EP86102392A 1985-03-15 1986-02-24 Régulateur de la résistance d'un courant d'air Expired EP0196450B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3509430 1985-03-15
DE3509430 1985-03-15

Publications (2)

Publication Number Publication Date
EP0196450A1 EP0196450A1 (fr) 1986-10-08
EP0196450B1 true EP0196450B1 (fr) 1989-05-03

Family

ID=6265380

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86102392A Expired EP0196450B1 (fr) 1985-03-15 1986-02-24 Régulateur de la résistance d'un courant d'air

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EP (1) EP0196450B1 (fr)
DE (1) DE3663175D1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4237031C1 (de) * 1992-11-03 1994-02-10 Mtu Muenchen Gmbh Verstellbare Leitschaufel
DE4309636C2 (de) * 1993-03-25 2001-11-08 Abb Turbo Systems Ag Baden Radialdurchströmte Abgasturboladerturbine
DE10243103A1 (de) * 2002-09-17 2004-03-25 Rolls-Royce Deutschland Ltd & Co Kg Vorrichtung zur Verstellung von Kompressorschaufeln einer Gasturbine
CN101832297B (zh) * 2010-05-21 2012-07-18 上海理工大学 轴流风机及其风阀、冷却塔及空气冷却器

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB664085A (en) * 1948-04-26 1952-01-02 Snecma Improvements in adjusting device for compressors
NL86599C (fr) * 1955-06-17
US2985427A (en) * 1955-11-25 1961-05-23 Gen Electric Adjustable blading for fluid flow machines
US3089679A (en) * 1960-06-06 1963-05-14 Chrysler Corp Gas turbine nozzle suspension and adjustment
DE2637222C3 (de) * 1976-08-18 1980-11-27 Wilhelm Gebhardt Gmbh, 7112 Waldenburg Drallregler

Also Published As

Publication number Publication date
DE3663175D1 (en) 1989-06-08
EP0196450A1 (fr) 1986-10-08

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