EP2122181B1 - Roue de ventilateur, système et série de boîte de vitesses - Google Patents

Roue de ventilateur, système et série de boîte de vitesses Download PDF

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Publication number
EP2122181B1
EP2122181B1 EP08707175.9A EP08707175A EP2122181B1 EP 2122181 B1 EP2122181 B1 EP 2122181B1 EP 08707175 A EP08707175 A EP 08707175A EP 2122181 B1 EP2122181 B1 EP 2122181B1
Authority
EP
European Patent Office
Prior art keywords
fan
air
fan impeller
guide ring
air guide
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.)
Active
Application number
EP08707175.9A
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German (de)
English (en)
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EP2122181A2 (fr
Inventor
Steffen Leonhard
Steffen Saar
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.)
SEW Eurodrive GmbH and Co KG
Original Assignee
SEW Eurodrive GmbH and Co KG
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Application filed by SEW Eurodrive GmbH and Co KG filed Critical SEW Eurodrive GmbH and Co KG
Publication of EP2122181A2 publication Critical patent/EP2122181A2/fr
Application granted granted Critical
Publication of EP2122181B1 publication Critical patent/EP2122181B1/fr
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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
    • F04D29/288—Part of the wheel having an ejecting effect, e.g. being bladeless diffuser
    • 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
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
    • F04D29/666—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by means of rotor construction or layout, e.g. unequal distribution of blades or vanes

Definitions

  • the invention relates to a fan, a system and a transmission series.
  • a fan is known according to the preambles of claims 1, 3, 5, 24 and 27, which has an inverted shell surrounding a hollow stump.
  • the hollow stump is connected to the shell by a set of oblique airfoils, the axial extent of the airfoils corresponding to the axial extent of the shell.
  • fans which consist of a radially outwardly open fan wheel, wherein a radially outwardly open annular air outlet opening is formed, which extends over the outer edges of the blades and rotates with the fan.
  • a radial impeller is disclosed in which the radially open fan blades are mounted between a front and a rear plate. The fan blades are configured to extend radially farther outward on one of the two plates than on the other plate.
  • a suction nozzle and an impeller for a fan are known.
  • the suction nozzle has an elliptical cross section in a plane in which the axis of rotation of the fan is located.
  • the impeller is sheathed and has a similar elliptical cross-section as the suction nozzle.
  • the impeller is dimensioned such that after assembly of the fan, the sheath covers the stationary suction and rotates around it.
  • the DE 1 253 402 B discloses a noise reduction device on multi-bladed radial fans for ventilating electrical machines.
  • the fan blades have an unequal spacing, which follows a particular scheme described in more detail in the document.
  • a fan is known in which at least two fan blades have a different curvature, so that the distance between adjacent blades varies.
  • the US 4,046,489 A discloses a fan blade which has a mirror-symmetrical cross-section at at least one sectional plane.
  • the invention is therefore the object of developing a fan, so that the cooling performance is improved and the environmental impact is reduced.
  • the object is achieved in the fan according to the features specified in claim 1, in the system according to the features indicated in claim 25 and in the transmission series according to the features indicated in claim 28.
  • a first fan blade to a first circumferentially adjacent fan blade has a first angular distance and the first fan blade to a second adjacent in the opposite direction fan blade has a second angular distance, wherein the first angular distance is smaller than the second angular distance is.
  • the sequence in the circumferential direction of the angular distances from a respective wing to the fan blade adjacent in the circumferential direction comprises at least two different types of angular distance values.
  • the fan blades are not necessarily arranged regularly.
  • the advantage here is that the fan blades produce periodic excitations whose main frequency component is lower than would be the case if all angular distances were equal.
  • the frequency component is at most half that of a regular arrangement of the fan blades.
  • the fan blades in the circumferential direction, in particular along the circumference of the fan are irregularly spaced.
  • a number n of fan blades is provided, with uniform rotation of the fan around its axis cause the fan blades when passing through a fixed reference direction a series of suggestions whose period is greater than one n-th the revolution time of the fan.
  • the period is greater than half or equal to half the rotational speed of the fan.
  • the period is equal to the revolution time of the fan.
  • each air duct is limited by at least fan blades, an air guide ring and / or a base body, wherein the cross section of the air channel in the course from inside to outside has a minimum.
  • air ducts are formed with a nozzle effect. These nozzles advantageously cause a directed flow of cooling air.
  • the minimum of the cross section of the air duct is effected by a minimum of the distance between the base body and the air guide ring, in particular by a minimum of the distance between the sectional figures of the body with an axial plane on the one hand and the air guide ring with the axial plane on the other.
  • the fan wheel comprises a base body, fan blades and an air guide ring, wherein the base body has a frusto-conical region and form at least two fan blades, a segment of the frusto-conical region and a segment of the air guide a radially extending air duct, the cross section according to the invention in the radial course a minimum having.
  • the advantage here is that the fan is easily manufacturable, since the geometric properties of the air duct, in particular the nozzle shape, with the boundary surfaces of air guide ring and body is easy to manufacture and controllable.
  • the main body of the fan is occupied in addition to its holding function with a Heilleitmaschine. As a result, parts can be saved.
  • the cross section of the air guide ring is convex on its inner side and concave on its outer side, in particular shaped such that the wall thickness is substantially constant.
  • the consistency of the wall thickness depends on the manufacturing tolerances of the production technology and on the speeds at which the fan is used.
  • the outer shape of the air guide ring thus follows substantially the inner shape of the air guide ring, and it is an advantageous form of the air guide ring formed at the same time low material usage. The advantage here is that for the air guide little material must be used, so that its moment of inertia is minimized.
  • the base body has a frustoconical region and the air guide ring is concentrically inscribed in a mathematical cone such that the air guide touches the mathematical cone in a first and a second axial region and in a third axial region between air guide ring and the mathematical cone a minimum distance is provided, wherein the third axial region is arranged between the first axial region and the second axial region, and at least two fan blades, a segment of the frusto-conical region and a segment of the air guide ring form an outwardly extending air channel.
  • the advantage here is that a nozzle-like air duct can be provided with constructional and manufacturing technology easy to handle geometric shapes.
  • each air channel is characterized by a geometric size
  • the sequence of the geometric size of the air ducts is an irregular sequence in one revolution of the fan.
  • the geometric size of each air duct is the angle between the limiting fan blades or the angle of a limiting fan blade a fan-fixed reference direction.
  • the geometric size of each air duct is the angular position of the center of gravity or the center plane of the air duct or the angle of an excellent direction of the air duct to a fan-fixed reference direction.
  • the center of gravity formed by all the fan blades is in the center of the fan.
  • the advantage here is that with reduced noise pollution additional loads on the bearings and the material can be avoided by imbalance.
  • the maximum axial extent of the fan blades is more than twice as large as the maximum axial extent of the air guide ring.
  • the advantage here is that a radial or laterally oblique discharge of the cooling air is made possible.
  • the fan is used in various transmissions or in general systems with fan.
  • the maximum radial extent of the fan blades is greater than the minimum radial extent of the air guide ring.
  • the advantage here is that large air outlets are formed, can be conducted through the cooling air to the housing to be cooled.
  • the fan blades on the suction side are axially retracted up to a radius, in particular by more than one third of the maximum axial extent of the fan blades.
  • the advantage here is that at a small distance from the fan, a fan cover can be placed, wherein at the intake ports or air inlets generated by the fan blades noise can be reduced.
  • each fan blade on a plane of symmetry in which preferably the axis of rotation of the fan is.
  • a rotationally invariable fan wheel is formed in a simple manner, and cooling air always flows in the same direction through the air channels.
  • the radial extent of the base body is smaller than the outer diameter of the fan wheel, in particular at least fifteen percent smaller than the inner diameter of the air guide ring.
  • the air ducts each form an air outlet, which comprises a radially aligned and an axially aligned portion.
  • the fan on different transmissions, especially directly in front of a housing wall or on a Kegelradtopf operable.
  • a fan with a fan with fan blades and a fan cover is included, wherein the fan as described above is formed according to the invention and wherein the fan cover surrounds the fan at least partially and the fan cover a Area having axial air inlets, wherein the fan blades in a first portion of the range with axial air inlets have a constant distance from the fan cover and in a second portion of the range with axial air inlets, the distance of the fan blades of the fan cowl greater than the constant distance in the first portion is especially more than twice as big.
  • the fan blades extend radially beyond the region with axial air inlets.
  • the cooling air is particularly advantageous sucked.
  • the fan wheel is arranged on a shaft of the transmission, in particular of the driving shaft.
  • a separate motor for the drive of the fan is dispensable.
  • a fan as described above is formed according to the invention and that the fan is mounted in a first variant on the driving shaft of a bevel gear and that the fan wheel is mounted in a second variant on the driving shaft of a spur gear.
  • air is preferably radially passable through air ducts and, in the second variant, air is directed through the air ducts at an angle to the radial direction and at an angle to the axial direction, in particular in an axial plane of the fan wheel obliquely to the axis of the fan wheel.
  • a housing wall of the transmission partially covers the air outlet of the air ducts in the first variant, in particular the axially oriented partial region of the air outlet.
  • FIG. 1 shows a fan for a fan of a transmission.
  • the fan wheel comprises at least one main body 10 with a hub 13, fan blades 11 and an air guide ring 12.
  • the fan is intended for mounting on a shaft of a gearbox.
  • the hub 13 is placed on the shaft for frictional connection with the same.
  • the fan wheel is driven by the shaft.
  • the shaft thus drives the fan blades 11, thereby producing an approximately radially or obliquely outwardly directed air flow.
  • This direction of the air flow is independent of the direction of rotation of the fan wheel, since each fan blade 11 has a plane of symmetry in which the axis of rotation of the fan wheel is located.
  • the main body 10, the air guide ring 12 and two adjacent fan blades 11 form air channels, is passed through the air flow.
  • FIG. 2 shows the back of the fan FIG. 1 , A support ring 20 of the main body 10 and the support edges 21 of each fan blade 11 lie in a common plane.
  • the plane described is aligned parallel to the housing wall of the transmission and arranged at a small distance to this.
  • the fan with basic body, fan blades and guide ring is preferably made in one piece, in particular as a cast aluminum or plastic, wherein in the case of Use of plastic, particularly preferably the plastic to avoid electrostatic charge is designed to be electrically conductive.
  • the fan is made of steel.
  • FIG. 3 shows a top view of the front of the fan after FIG. 1 ,
  • the fan blades 11 are mounted, wherein the fan blades 11 each have a plane of symmetry, which contains the axis of rotation of the fan.
  • the fan blades 11 are thus substantially, that is, apart from inclinations of the surfaces of the fan blades 11, perpendicular to an annular, truncated cone-shaped portion 35 of the body 10th
  • Each fan blade 11 is arranged with respect to a fan-fixed reference direction 36 each at an angle w1.
  • the fan blades 11 are irregularly arranged: In particular, the difference amounts of each two angles w1 can not be represented as an integer multiple of a basic amount. Thus, resonance excitations are reduced by the fan blades 11, in particular, the frequency of the resonance excitations is reduced.
  • the irregular arrangement of the fan blades causes the excitation is generated during the passage of the fan blades 11 by a radially extending, fixed reference direction, the time course has a period that coincides with the rotation time of the fan.
  • w1.i denotes the angle w1 of the ith fan blade, where i is less than or equal to the total number n of the fan blades 11 -9 in the exemplary embodiment
  • the angle w1.1, w1.2, w1.3 is characterized by the consecutive sequence , ..., w1.n, w1.1, w1.2, w1.3, ... defines a periodic sequence of numbers whose smallest period length is just n.
  • the period length of the sequence of numbers is a number greater than one, preferably two, more preferably n / 2 or (n-1) / 2, depending on which of the last two alternatives yields an integer.
  • the fan wheel on a mirror symmetry plane, in which preferably the axis of rotation of the fan wheel is included.
  • the outer diameter of the main body 10 in FIG. 3 is much smaller than the outer diameter of the fan selected.
  • the outer diameter of the base body 10 is two-thirds of the outer diameter of the fan and thus of the air guide ring 12, and more preferably, the outer diameter of the base body 10 relative to the inner diameter of the air guide ring 12 is reduced by ten to twenty percent.
  • favorable flow conditions for the fan can be achieved.
  • the air guide ring 12 is composed of a first guide ring 33 and a second guide ring 34, which are each designed to be annular and frusto-conical.
  • the opening angle of the second guide ring 34 is selected larger than the opening angle of the first guide ring 33.
  • a first fan blade 31, a second fan blade 32, a segment 30 of the frusto-conical region 35 of the base body 10 and a segment 37 of the air guide ring 12 enclosed by the two fan blades 31, 32 form an air channel through which air flows during operation.
  • Each of these air ducts formed in this way has an opening angle or angular distance w2, ie the angle between the delimiting fan blades 31, 32, ie between two nearest neighbors, and an angle w3 of the center plane of the air duct with respect to a reference direction 36.
  • the opening angle w2 results thus in each case from the difference of the angle w1 to the limiting fan blades 31, 32.
  • the angle w3 differs in the example according to the FIG. 3 from the angles w1 to the limiting fan blades 31, 32 each by a constant, that is independent of the number of fan blades, amount.
  • the sequence of opening angles w2 and the sequence of angles w3 defines an irregular sequence of numbers.
  • FIG. 4 shows a sectional view taken along in FIG FIG. 4 with AA designated axial plane.
  • the fan blades 11 have approximately rectangular recesses 40, so that the fan blades 11 in operation at a first area in the FIG. 4 from the top to be mounted fan cover at a shorter distance than in a second area.
  • This second area contains air inlets for the air supply to the fan wheel, and by the recess 40 periodic vibration excitations at the air inlets are avoided by a Vorbeistich the fan blades 10 in close proximity.
  • the main body 10 comprises at least one hub 13 for non-positive connection of the impeller on a shaft and a frusto-conical portion 35.
  • This frusto-conical portion 35 forms with the first guide ring 33 and the second guide ring 34 a nozzle-shaped air passage, wherein the nozzle-like constriction is approximately at the minimum Distance m of the air guide ring 12 and base 10 is formed.
  • This minimum distance m causes a minimum cross-section of the air channel delimited by a segment of the air guide ring 12, a segment of the frusto-conical region 35 and two adjacent fan blades 11, this cross section being assumed to be approximately at the same position as the minimum distance.
  • the exact position of the minimum cross section with respect to the minimum distance depends on the specific configuration of the cross section of the air guide ring 12 and the frusto-conical region.
  • the air guide ring 12 is formed at least from a first guide ring 33 and a second guide ring 34, wherein the opening angle of the frusto-conical first guide ring 33 is smaller than the opening angle of the frusto-conical second guide ring 34.
  • First guide ring 33 and second guide ring 34 are connected along a concentric ring.
  • the design of the opening angle of the guide rings 33, 34 is such that the air guide ring 12 can be inscribed into a conical surface 42, wherein the conical surface 42 contacts the air guide ring 12 at two concentric cutting circles 43, 44, but the conical surface 42 does not intersect the interior of the air guide ring 12 ,
  • the air guide ring 12 thus has an axial cross section, whose outer contour is concave.
  • a convex surface is formed on the inner side of the air guide ring 12 facing the shaft, where convex the property that the connecting line of two points on the inside of the air guide ring 12 always runs at least partially inside the air guide ring 12.
  • the inner contour of the cross section of the air guide ring 12 is thus curved with opposite signs as the outer contour of the cross section of the frusto-conical portion 35, in particular its radial outlet. Both contours are thus convex, with the convexities facing each other.
  • first guide ring 33 and second guide ring 34 results in a constriction and a minimum distance m, which causes a nozzle effect in the associated air duct.
  • the inside of the air guide ring is convex, but not described by two connected truncated cones, but by, for example, a parabolic or a circular arc-shaped cross-sectional contour. Even in these cases, a resulting cross-sectional constriction causes a nozzle effect with which an air flow can be conducted.
  • the air guide ring 12 does not extend axially over the entire length of the fan, in particular the fan blades 11. Rather, the second guide ring 34 terminates at an axial distance from the plane defined by the support ring 20. In this way, a radial opening 41 is formed for the air ducts through which - in the assembled state - air in the radial direction along the housing wall of the transmission can be conducted.
  • FIG. 5 shows a gear 50 with mounted fan 57.
  • a fan cover 51 surrounds the fan. For illustration is in FIG. 5 only one half of the fan cowl 51 is shown.
  • the hub 13 of the fan wheel sits on an intermediate part 54 and is non-positively connected thereto, wherein the intermediate part 54 in turn is arranged on a shaft 53 of the transmission and is at least positively connected thereto.
  • the shaft 53 is the driving shaft of the transmission 50.
  • the fan cover 51 has an annular area with air inlets 55, through which the fan draws air.
  • the axial orientation of the fan blades 11 causes, regardless of the direction of rotation is sucked in the same axial direction.
  • the suction side of the fan is clearly defined as the side through which the air flows.
  • the air ducts have an opening through which air therefore exits independently of the direction of rotation. Thus, an air outlet is formed.
  • the diameter of the area with air inlets 55 is equal to the inner diameter of the first guide ring 33.
  • the fan blades 11 strip past the air inlets 55 during a rotational movement.
  • the fan blades 11 each have a recess 40, so that only a portion of the area of the air inlets 55 is swept by the fan blades 11 at a small distance, while another, radially further inboard portion is covered at a greater distance.
  • the radial extent of the radially further inner subregion is greater than the radial extent of the radially outer subregion.
  • FIG. 6 shows the fan FIG. 5 in a side view.
  • the fan wheel is mounted above a bevel gear pot 61.
  • a gap 60 is provided between the fan cover 51 and the first guide ring 33.
  • the recess 40 of the fan blades 11 in the axial direction is about twice as long as the axial extent of the gap 60th
  • the provided along the radial boundary edge 22 of the fan blades 11 withdrawal of the second guide ring 34 allows mounting of the fan on a shaft which protrudes from a side wall of the transmission 50.
  • the fan is mounted directly in front of this side wall, and the moving of the fan blades 11 air flows radially outwards and thus along the housing wall.
  • the housing wall covers a portion of the air outlet of the air ducts, namely that portion which is axially aligned, the surface normal so is arranged parallel to the shaft axis.
  • a series is formed in whose variants, such components that form the fan, in particular the fan, are uniformly used.
  • the variety of parts of the series is reduced.

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

Claims (29)

  1. Roue de ventilateur,
    avec un certain nombre de conduits d'air,
    sachant que chaque conduit d'air est délimité par au moins des pales de ventilateur (11, 31, 32), une bague (12) de guidage d'air et un corps de base (10), sachant que la section transversale du conduit d'air présente un minimum dans son étendue radiale de l'intérieur vers l'extérieur,
    caractérisée en ce qu'une étendue axiale maximale des pales de ventilateur (11, 31, 32) est égale à plus du double d'une étendue axiale maximale de la bague (12) de guidage d'air.
  2. Roue de ventilateur selon la revendication 1, caractérisée en ce que le minimum de la section du conduit d'air est produit par un minimum de la distance entre le corps de base (10) et la bague (12) de guidage d'air, en particulier par un minimum de la distance entre les figures de coupe du corps de base (10) avec un plan axial d'une part et de la bague (12) de guidage d'air avec le plan axial d'autre part.
  3. Roue de ventilateur
    comprenant un certain nombre de conduits d'air, sachant que chaque conduit d'air est délimité par au moins des pales de ventilateur (11, 31, 32), une bague (12) de guidage d'air et un corps de base (10), sachant que la section transversale de la bague (12) de guidage d'air est réalisée de forme convexe sur son côté intérieur et de forme concave sur son côté extérieur,
    caractérisée en ce que l'étendue axiale maximale des pales de ventilateur (11, 31, 32) est égale à plus du double de l'étendue axiale maximale de la bague (12) de guidage d'air.
  4. Roue de ventilateur selon la revendication précédente, caractérisée en ce que la section transversale de la bague (12) de guidage d'air est réalisée de forme convexe sur son côté intérieur et de forme concave sur son côté extérieur de telle sorte que l'épaisseur de paroi de la bague (12) de guidage d'air est sensiblement constante.
  5. Roue de ventilateur
    avec un certain nombre de conduits d'air, sachant que chaque conduit d'air est délimité par au moins des pales de ventilateur (11, 31, 32), une bague (12) de guidage d'air et un corps de base (10),
    sachant que le corps de base (10) présente une région tronconique (35) et que la bague (12) de guidage d'air peut être inscrite concentriquement dans un cône mathématique de telle sorte que la bague (12) de guidage d'air touche le cône mathématique dans une première et une deuxième région axiale et qu'une distance minimale est prévue entre la bague (12) de guidage d'air et le cône mathématique dans une troisième région axiale, sachant que la troisième région axiale est disposée entre la première région axiale et la deuxième région axiale,
    et qu'au moins respectivement deux pales de ventilateur (11, 31, 32), un segment (30) de la région tronconique (35) et un segment (37) de la bague (12) de guidage d'air forment un conduit d'air s'étendant radialement ou en oblique vers l'extérieur,
    caractérisée en ce que l'étendue axiale maximale des pales de ventilateur (11, 31, 32) est égale à plus du double de l'étendue axiale maximale de la bague (12) de guidage d'air.
  6. Roue de ventilateur selon au moins une des revendications précédentes, caractérisée en ce qu'au moins deux conduits d'air de types différents sont formés sur une roue de ventilateur.
  7. Roue de ventilateur selon au moins une des revendications précédentes, caractérisée en ce que chaque conduit d'air peut être décrit par une grandeur géométrique,
    et la succession des grandeurs géométriques des conduits d'air lors d'une révolution du ventilateur (57) constitue une suite irrégulière.
  8. Roue de ventilateur selon au moins une des revendications précédentes, caractérisée en ce que la grandeur géométrique de chaque conduit d'air est l'angle entre les pales de ventilateur délimitantes (11, 31, 32) ou l'angle d'une pale de ventilateur délimitante (11, 31, 32) par rapport à une direction de référence (36) solidaire du ventilateur.
  9. Roue de ventilateur selon au moins une des revendications précédentes, caractérisée en ce que la grandeur géométrique de chaque conduit d'air est la position angulaire du centre de gravité ou du plan médian du conduit d'air, ou l'angle d'une direction remarquable du conduit d'air par rapport à une direction de référence (36) solidaire du ventilateur.
  10. Roue de ventilateur selon au moins une des revendications précédentes, caractérisée en ce que le centre de gravité formé par toutes les pales de ventilateur (11, 31, 32) se situe au centre du ventilateur (57).
  11. Roue de ventilateur selon au moins une des revendications précédentes, caractérisée en ce que l'étendue radiale maximale des pales de ventilateur (11, 31, 32) est supérieure à l'étendue radiale minimale de la bague (12) de guidage d'air.
  12. Roue de ventilateur selon au moins une des revendications précédentes, caractérisée en ce que les pales de ventilateur (11, 31, 32) sont en retrait axialement jusqu'à un rayon sur le côté d'aspiration, en particulier de plus d'un tiers de l'étendue axiale maximale des pales de ventilateur (11, 31, 32).
  13. Roue de ventilateur selon au moins une des revendications précédentes, caractérisée en ce que chaque pale de ventilateur présente un plan de symétrie.
  14. Roue de ventilateur selon au moins une des revendications précédentes, caractérisée en ce que chaque pale de ventilateur (11, 31, 32) présente un plan de symétrie dans lequel se trouve l'axe de rotation de la roue de ventilateur.
  15. Roue de ventilateur selon au moins une des revendications précédentes, caractérisée en ce que la roue de ventilateur présente un plan de symétrie dans lequel se trouve l'axe de rotation de la roue de ventilateur.
  16. Roue de ventilateur selon au moins une des revendications précédentes, caractérisée en ce que l'étendue radiale du corps de base (10) est inférieure au diamètre extérieur de la roue de ventilateur, en particulier est inférieure d'au moins quinze pour-cent au diamètre intérieur de la bague (12) de guidage d'air.
  17. Roue de ventilateur selon au moins une des revendications précédentes, caractérisée en ce que les conduits d'air forment respectivement une sortie d'air qui comprend une région partielle orientée radialement et une région partielle orientée axialement.
  18. Roue de ventilateur selon au moins une des revendications précédentes, caractérisée en ce qu'une première pale de ventilateur (11, 31, 32) présente une première distance angulaire par rapport à une première pale de ventilateur (11, 31, 32) voisine en direction circonférentielle,
    et la première pale de ventilateur (11, 31, 32) présente une deuxième distance angulaire par rapport à une deuxième pale de ventilateur (11, 31, 32) voisine dans la direction opposée,
    sachant que la première distance angulaire est inférieure à la deuxième distance angulaire.
  19. Roue de ventilateur selon au moins une des revendications précédentes, caractérisée en ce que la succession en direction circonférentielle des distances angulaires d'une pale respective à la pale de ventilateur (11, 31, 32) immédiatement voisine en direction circonférentielle comprend au moins deux sortes différentes de valeurs de distance angulaire.
  20. Roue de ventilateur selon au moins une des revendications précédentes, caractérisée en ce que les pales de ventilateur (11, 31, 32) sont irrégulièrement distantes en direction circonférentielle, en particulier le long de la circonférence de la roue de ventilateur.
  21. Roue de ventilateur selon au moins une des revendications précédentes, caractérisée en ce qu'il est prévu un nombre n de pales de ventilateur (11, 31, 32), sachant que lors de la rotation uniforme de la roue de ventilateur autour de son axe, les pales de ventilateur (11, 31, 32) produisent lors du passage par une direction de référence fixe (36) une succession d'excitations dont la période est supérieure à un n-ième de la durée de révolution de la roue de ventilateur.
  22. Roue de ventilateur selon au moins une des revendications précédentes, caractérisée en ce que la période est supérieure ou égale à la moitié de la durée de révolution de la roue de ventilateur.
  23. Roue de ventilateur selon au moins une des revendications précédentes, caractérisée en ce que la période est égale à la durée de révolution de la roue de ventilateur.
  24. Système, en particulier transmission (50),
    comprenant un ventilateur (57) avec
    une roue de ventilateur avec des pales de ventilateur (11, 31, 32)
    et un capot de ventilateur (51)
    caractérisé en ce que la roue de ventilateur est configurée selon l'une des revendications précédentes,
    le capot de ventilateur (51) entoure au moins partiellement la roue de ventilateur
    et le capot de ventilateur (51) présente une région avec des admissions d'air axiales (55), sachant que les pales de ventilateur (11, 31, 32) présentent une distance constante du capot de ventilateur (51) dans une première région partielle de la région avec des admissions d'air axiales (55),
    et que, dans une deuxième région partielle de la région avec des admissions d'air axiales (55), la distance entre les pales de ventilateur (11, 31, 32) et le capot de ventilateur (51) est supérieure à la distance constante dans la première région partielle, en particulier est égale à plus du double de celle-ci.
  25. Système selon la revendication 24, caractérisé en ce que les pales de ventilateur (11, 31, 32) s'étendent radialement au-delà de la région avec des admissions d'air axiales (55).
  26. Système selon au moins une des revendications précédentes, caractérisé en ce que le système est une transmission (50), sachant que la roue de ventilateur est disposée sur un arbre (53) de la transmission (50), en particulier sur l'arbre d'entrée (53).
  27. Gamme de transmissions,
    avec des variantes, qui comprennent respectivement un ventilateur (57) avec une roue de ventilateur et au moins un étage de transmission,
    caractérisée en ce qu'une roue de ventilateur est configurée selon l'une des revendications 1 à 23,
    en ce que la roue de ventilateur, dans une première variante, est montée sur l'arbre d'entrée (53) d'un étage à engrenage conique,
    et en ce que la roue de ventilateur, dans une deuxième variante, est montée sur l'arbre d'entrée (53) d'un étage à engrenage droit.
  28. Gamme de transmissions selon la revendication 27, caractérisée en ce que
    dans la première variante, l'air peut être dirigé radialement par des conduits d'air,
    et dans la deuxième variante, l'air peut être dirigé par les conduits d'air sous un angle par rapport à la direction radiale et sous un angle par rapport à la direction axiale, en particulier dans un plan axial de la roue de ventilateur en oblique par rapport à l'axe de la roue de ventilateur.
  29. Gamme de transmissions selon au moins une des revendications précédentes, caractérisée en ce que, dans la première variante, une paroi de boîtier de la transmission (50) recouvre partiellement la sortie d'air des conduits d'air, en particulier la région partielle de la sortie d'air qui est orientée axialement.
EP08707175.9A 2007-02-23 2008-01-22 Roue de ventilateur, système et série de boîte de vitesses Active EP2122181B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007009366.9A DE102007009366B4 (de) 2007-02-23 2007-02-23 Lüfterrad, System und Getriebebaureihe
PCT/EP2008/000442 WO2008101576A2 (fr) 2007-02-23 2008-01-22 Roue de ventilateur, système et série de boîte de vitesses

Publications (2)

Publication Number Publication Date
EP2122181A2 EP2122181A2 (fr) 2009-11-25
EP2122181B1 true EP2122181B1 (fr) 2018-06-27

Family

ID=39313261

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08707175.9A Active EP2122181B1 (fr) 2007-02-23 2008-01-22 Roue de ventilateur, système et série de boîte de vitesses

Country Status (4)

Country Link
EP (1) EP2122181B1 (fr)
CN (1) CN101617127B (fr)
DE (1) DE102007009366B4 (fr)
WO (1) WO2008101576A2 (fr)

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US11536362B2 (en) * 2019-03-26 2022-12-27 Sew-Eurodrive Gmbh & Co. Kg Transmission having a fan assembly

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DE102012025597A1 (de) 2012-07-06 2014-01-09 Sew-Eurodrive Gmbh & Co Kg Getriebe mit einer Welle
DE102012025596A1 (de) 2012-07-06 2014-01-09 Sew-Eurodrive Gmbh & Co Kg Getriebe mit einer Welle
DE102012013351A1 (de) * 2012-07-06 2014-05-08 Sew-Eurodrive Gmbh & Co Kg Getriebe mit einer Welle
DE102013005430A1 (de) 2013-03-28 2014-10-02 Sew-Eurodrive Gmbh & Co Kg Getriebe mit einer Welle
DE102014010983B4 (de) * 2014-07-29 2022-08-04 Sew-Eurodrive Gmbh & Co Kg Getriebevorrichtung, umfassend ein Getriebe und einen Lüfter
EP4118361A1 (fr) 2020-03-13 2023-01-18 Sew-Eurodrive GmbH & Co. KG Transmission comprenant un ensemble ventilateur
EP4162176A1 (fr) 2020-06-05 2023-04-12 SEW-EURODRIVE GmbH & Co. KG Entraînement, en particulier transmission entraînée par un moteur électrique, comprenant un arbre
CN113020828B (zh) * 2021-02-03 2022-07-08 武汉船用机械有限责任公司 前导管的制造方法

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Also Published As

Publication number Publication date
DE102007009366B4 (de) 2017-06-14
WO2008101576A2 (fr) 2008-08-28
DE102007009366A1 (de) 2008-08-28
WO2008101576A3 (fr) 2008-10-23
EP2122181A2 (fr) 2009-11-25
CN101617127A (zh) 2009-12-30
CN101617127B (zh) 2013-09-18

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