EP2926013A2 - Dispositif de ventilation et véhicule pourvu d'un dispositif de ventilation - Google Patents

Dispositif de ventilation et véhicule pourvu d'un dispositif de ventilation

Info

Publication number
EP2926013A2
EP2926013A2 EP13802533.3A EP13802533A EP2926013A2 EP 2926013 A2 EP2926013 A2 EP 2926013A2 EP 13802533 A EP13802533 A EP 13802533A EP 2926013 A2 EP2926013 A2 EP 2926013A2
Authority
EP
European Patent Office
Prior art keywords
fan
edge surface
opening
peripheral portions
separate
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
EP13802533.3A
Other languages
German (de)
English (en)
Other versions
EP2926013B1 (fr
Inventor
Thomas Dreesen
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.)
Brose Fahrzeugteile SE and Co KG
Original Assignee
Brose Fahrzeugteile SE 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 Brose Fahrzeugteile SE and Co KG filed Critical Brose Fahrzeugteile SE and Co KG
Publication of EP2926013A2 publication Critical patent/EP2926013A2/fr
Application granted granted Critical
Publication of EP2926013B1 publication Critical patent/EP2926013B1/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
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/64—Mounting; Assembling; Disassembling of axial pumps
    • F04D29/644—Mounting; Assembling; Disassembling of axial pumps especially adapted for elastic fluid pumps
    • F04D29/646—Mounting or removal of fans
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P5/00—Pumping cooling-air or liquid coolants
    • F01P5/02—Pumping cooling-air; Arrangements of cooling-air pumps, e.g. fans or blowers
    • F01P5/06—Guiding or ducting air to, or from, ducted fans
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D19/00—Axial-flow pumps
    • F04D19/002—Axial flow fans
    • 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
    • F04D29/08—Sealings
    • F04D29/16—Sealings between pressure and suction sides
    • F04D29/161—Sealings between pressure and suction sides especially adapted for elastic fluid pumps
    • F04D29/164—Sealings between pressure and suction sides especially adapted for elastic fluid pumps of an axial flow wheel
    • 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
    • F04D29/325—Rotors specially for elastic fluids for axial flow pumps for axial flow fans
    • 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
    • F04D29/325—Rotors specially for elastic fluids for axial flow pumps for axial flow fans
    • F04D29/326—Rotors specially for elastic fluids for axial flow pumps for axial flow fans comprising a rotating shroud
    • 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
    • F04D29/522—Casings; Connections of working fluid for axial pumps 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
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/52—Casings; Connections of working fluid for axial pumps
    • F04D29/522—Casings; Connections of working fluid for axial pumps especially adapted for elastic fluid pumps
    • F04D29/526—Details of the casing section radially opposing blade tips
    • 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
    • F04D29/541—Specially adapted for elastic fluid pumps
    • F04D29/545—Ducts
    • 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
    • F04D29/541—Specially adapted for elastic fluid pumps
    • F04D29/545—Ducts
    • F04D29/547—Ducts having a special shape in order to influence fluid flow
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P2070/00—Details
    • F01P2070/50—Details mounting fans to heat-exchangers

Definitions

  • the invention is in the field of mechanical engineering and relates to a fan device and a vehicle with a fan device, wherein such a fan device of increasing the air flow, for example, for cooling purposes, can serve.
  • an internal combustion engine is usually provided in the drive train, which requires cooling. Since the heat radiation and convection are insufficient for this purpose, such a cooling process is usually assisted by a cooling air flow which can be generated on the one hand by the airstream while the vehicle is moving, which on the other hand is usually also assisted by a fan device.
  • a cooling air flow which can be generated on the one hand by the airstream while the vehicle is moving, which on the other hand is usually also assisted by a fan device.
  • the interposition of a cooler device in the form of a fluid cooling circuit is useful, wherein a heat exchanger (cooler) is exposed to the travel air flow and the air flow of a fan device.
  • Such a fan device usually has a drivable fan wheel, which has a conveying element for air in the form of a screw, a paddle wheel or a propeller.
  • a fan is mounted so that it is held within a through opening in a fan cowl or generally surrounding the opening in the radial direction socket.
  • the efficiency of the fan device is particularly high when the gap between the fan and the edge of the opening in the fan cowl is as small as possible.
  • EP 1 621 773 A1 discloses the use of an electrically driven fan in a vehicle in order to amplify the airstream and to operate a cooling device in the vehicle.
  • a radiator network which is interspersed with pipes, which are flowed through with a coolant.
  • the coolant produces a heat exchange with the unit to be cooled.
  • the fan is electrically driven there.
  • the present invention is based on the background of the prior art, the object to provide a fan device of the type mentioned, the smallest possible gap between the fan and the edge of the opening in the fan frame even when pivoting the fan device, for example when cornering Vehicle, in which the fan device is installed, allows.
  • a fan device is provided with a socket, in particular a fan cowl, which has a substantially circular through opening for receiving a fan wheel rotating in the opening about its central axis, wherein the opening is bounded by an edge surface circulating substantially cylindrically symmetrically about the central axis. It is also provided that at the edge surface in two separate, diametrically opposed peripheral portions compared to the cylindrically symmetric in the other peripheral portions shape of the radius at least partially increased and / or radially inwardly projecting circumferential projection of the edge surface axially of the fan for the provided space is offset away.
  • the edge surface can have different shapes in longitudinal section, which are described in more detail below, for example, it can in Longitudinal section have a circumferential, at least partially radially extending projection in the form of a step, bevel or lip.
  • the cylindrically symmetrical edge surface extends over a more or less large axial length in the direction of the central axis of the opening.
  • the radius of the edge surface in the two separate peripheral portions at least on a partial surface of the part of the edge surface which extends in the axial direction or in the entire part of the edge surface which extends in the axial direction, in comparison to that in the remaining peripheral portions cylindrically symmetrical shape is increased.
  • edge surface in the separate peripheral sections does not have to be radially expanded the entire radius of the edge surface in the region of the separate, opposing peripheral portions, but often it is sufficient if the edge surface is extended only on a part of its axial length relative to the radius in the other peripheral portions.
  • the transition between the radially widened axial regions of the edge surface in the separate peripheral sections and the non-widened axial section of the edge surface may, for example, be stepped or formed by a conical transition region. It can also be provided that the edge surface in longitudinal section forms a profile with a variable radius with respect to the axial length and that the radius of the edge surface in two separate, diametrically opposite peripheral portions of a cross-section compared to that in the other peripheral portions of the same Cross-section radius present is at least partially increased.
  • the edge surface In longitudinal section, ie in a section parallel to the central axis of the opening, the edge surface, as already mentioned above, does not necessarily have a cylindrical contour, but it can change in the axial direction with respect to the radius, for example in the form of a conical section or one or more Steps or in the form of a circumferential, channel-shaped groove.
  • the corresponding profile can be provided circumferentially over the entire circumferential area of the opening, whereby individual axial sections of the edge surface are widened with respect to their radius in the two separate, mutually opposite peripheral sections or, for example in the case of an axial section with a circumferential groove, axially opposite to the remaining peripheral areas are shifted.
  • a type of labyrinth seal may be provided in the opening between the fan wheel and the edge of the opening by a peripheral step, the fan wheel itself running in a region of the opening of larger radius, while adjacent the fan wheel a radially inwardly projecting step in the edge surface the opening is provided.
  • the contour of the fan wheel may also form a peripheral step, which may be formed complementary to a provided in the edge surface step. This extends the radial / axial gap between the impeller and the edge surface and improves the seal.
  • the edge surface in longitudinal section has at least one extending in the radial direction with respect to the central axis stage and that the radius of the edge surface in at least one cross-sectional area on at least one axial side of the step in two separate, diametrically opposed peripheral portions in comparison to the present in the remaining peripheral portions of the same cross-sectional area radius is at least partially increased.
  • a radially extending stage is not just a step with perpendicular to the axial direction extending Flank, but also a step with a slope oblique to the axial direction are understood.
  • the embodiment of the invention can provide that the radially inwardly projecting step of the edge surface is arranged in the course of the air flow before or behind the fan.
  • the contour swept by the fan wheel in the course of its rotation may also have a step, which may be designed to be substantially complementary, in particular, to the step in the edge surface. This creates a
  • the edge surface in longitudinal section has a radially extending with respect to the central axis step or lip, which forms a sealing surface for a radially outer region of the fan wheel, characterized in that the step or lip in two separate, diametrically opposed Circumferential portions is offset in the axial direction compared to the other peripheral portions in order to increase the space for receiving the fan wheel in this area.
  • This design allows a gradual transition in the deviation from the cylindrically symmetrical design of the edge of the opening of the two separate, radially enlarged peripheral portions to the other cylindrically symmetrical shaped without radial expansion peripheral portions of the edge of the opening.
  • Fan wheel naturally has the strongest amplitude at the two points on the circumference of the fan wheel, which have the greatest distance to the "pitch axis" so to the axis around which takes place by the yaw moment, the pitching movement of the fan wheel.
  • the amplitude of the pitching motion steadily decreases in the circumferential direction with the distance from these points.
  • the invention can also advantageously be formed in that the edge surface is formed concavely curved viewed in longitudinal section at least in the two separate, diametrically opposed peripheral portions.
  • the circumferential sections of the edge surface which are concave in longitudinal section form part of a spherical surface form, which has its ball center, in particular within the passage opening on the central axis.
  • the ball center may also be spaced on the central axis of the opening.
  • the invention also relates to a fan device with a built-in this fan which the corresponding Conditions fulfilled.
  • the invention thus relates to a fan device having a fan cowl, which has a substantially circular through-opening with a fan wheel rotating in the opening about its central axis, wherein the opening is bounded by an edge surface circulating substantially cylindrically symmetrically about the central axis, and wherein between the peripheral contour the fan wheel and the edge surface is formed a gap, wherein the through hole is radially expanded in two separate, diametrically opposed peripheral portions compared to the cylindrically symmetrical in the other peripheral portions form.
  • the invention also relates to a vehicle with a fan device according to the invention with a about a central axis in a through opening rotatably driven fan wheel, wherein the installation position of the fan device in the vehicle is such that the central axis is aligned substantially in the straight ahead direction of the vehicle, wherein the through-opening is radially widened in a peripheral section arranged in its uppermost region and in a second, in its lowermost region, in comparison to the cylindrically symmetrical shape in the remaining peripheral sections.
  • 1 is a fan device with a fan frame and a fan in three-dimensional view
  • Fig. 2 shows another fan device with a fan cowl and a
  • FIG. 3 is a front view of a detail of a fan frame with a through opening and a fan
  • FIG. 4 is a longitudinal section of the arrangement of FIG. 3
  • FIG. 5 shows a further longitudinal section of the arrangement of FIG. 3,
  • FIG. 6 shows the installation position of a fan device according to the invention in a motor vehicle
  • FIG. 7 is a front view of another fan device with a fan
  • FIG. 8 is a first longitudinal section of the arrangement of Fig. 7,
  • FIG. 9 is a further longitudinal section of the arrangement of Fig. 7,
  • Fig. 11 shows a further longitudinal section of the same arrangement, as shown in the
  • Fig. 13 is a longitudinal section of a fan with another special
  • Fig. 18 is a front view of a further fan device, as well
  • FIG. 19 two partial sections from FIG. 18.
  • Fig. 1 shows schematically a part of a so-called radiator box 1 with a peripheral frame 2, in which a fan frame 3 is inserted.
  • the fan frame 3 may be formed, for example, as a plate having a substantially circular opening 4 for receiving a fan wheel 5.
  • Chiller box 1 the fan frame 3 and the fan 5 in the course of the air flow, a cooler upstream or downstream, which is shown in Fig. 1 only schematically as a dashed box 6.
  • heat exchange means may be provided, such as a capacitor network.
  • the fan 5 has a hub 7 which is connected to a shaft, not shown, which is connected to an electric motor and driven by this.
  • the electric motor and the shaft and thus also the fan 5 are fixed within the radiator box 1, for example, by webs which are firmly connected to the frame 2. Thus, the fan 5 is held so that it can rotate in the through hole 4.
  • the fan 5 has a plurality, in the example shown, nine conveyor blades 8, 9, 5 in the course of the rotation of the fan wheel to promote air in the axial direction with respect to the central axis 10 of the opening 4.
  • the central axis 10 also represents the axis of rotation of the fan wheel and the central axis of the shaft, not shown.
  • the individual conveying blades 8, 9 are fixedly connected to each other by a revolving fan ring 11. Between the Lüfterradring 11 and the edge of the opening 4 a substantially axially extending gap 10 is provided, which ensures that the fan or the fan ring 11 does not drag on the fan frame 3 and that on the other hand, the space between the fan 5 and the Fan shroud 3 is as small as possible in order to allow good efficiency by efficiently promoting the air flow through the fan 5.
  • Fig. 2 shows in three-dimensional view a fan device within a further frame 3 ', where there is a motor 12 is shown in the form of an electric motor which is secured by webs 13, 14 on the edge surface 15 of the fan frame 3'. Connected to the electric motor 12 is a shaft 16, which is fixed in the hub of a fan wheel 5 'and drives it.
  • a motor 12 is shown in the form of an electric motor which is secured by webs 13, 14 on the edge surface 15 of the fan frame 3'.
  • a shaft 16 Connected to the electric motor 12 is a shaft 16, which is fixed in the hub of a fan wheel 5 'and drives it.
  • conveying blades 8 ', 9' are provided, which are not connected to each other at its outer periphery by a Lüfterradring 11.
  • the axial gap between the fan wheel 5 'and the edge surface 15 of the opening in the fan casing 3' is determined there by the contour of the conveying blades that is traversed during the rotation / swept over and the shape of the opening or the edge surface 15.
  • Fig. 3 shows schematically in a front view a fan 5 "with a Lüfterradring 11 ', which is in an opening 4" rotatably mounted about the central axis 10'.
  • the opening 4 " is formed within a fan cowl indicated by hatching.
  • the opening 4 is not perfectly circular, but that in the separate peripheral sections 17, 18, which are indicated by double arrows between respective radially extending dashed lines, the radius r of the opening or the Edge surface of the opening 4 "relative to the other peripheral portions is increased.
  • This measure according to the invention takes into account the fact that when tilting the fan wheel 5 "or the entire fan device about the axis 19 or an axis parallel to this a pitch movement of the fan 5" from the plane of the drawing or in the plane of the drawing to the in the drawing plane lying axis 20 takes place.
  • FIG. 4 shows a longitudinal section of the ventilating device from FIG. 3 along the axis 20. It is on both sides of the fan 5 "between the Lüfterradring 11 'and the edge 15' of the opening 4" a relatively narrow axial gap recognizable. It is now assumed that the fan device is pivoted with a rapidly rotating fan wheel 5 "about an axis 21 perpendicular to the drawing plane in Fig. 4 axis, as indicated by the double arrow 22. It then results from the gyroscopic moments in the rotating Fan 5 "a pitching movement perpendicular to the plane of the pivoting movement, as in Fig. 5, which is a section along the axis 19 in Fig.
  • FIG. 6 the installation position of a fan device according to the invention in a motor vehicle 26 is shown schematically. It is merely the fan 5 is particularly designated as well as the direction of travel of the motor vehicle by the arrow 27 and the direction of the wind through the arrow 28. By the pivot double arrow 29, the direction of the pitch movement of the fan 5 is indicated when cornering of the motor vehicle.
  • the separate circumferential sections 17, 18, in which the opening is widened radially and the axial gap is enlarged can each have at least ten degrees, in particular at least twenty degrees, more advantageously in particular. dere occupy at least thirty degrees of the total circumference of the Lüfterradrings or the edge of the opening. It is also advantageous if the separate peripheral sections 17, 18 together do not occupy more than 180 degrees of the total circumference.
  • both separate peripheral sections are approximately the same size, they should advantageously differ by no more than 50% with respect to the occupied area.
  • the radius differences between the edge surfaces of the opening in the separate peripheral sections and in the remaining peripheral sections should advantageously be less than 5%, more advantageously less than 3%.
  • FIG. 7 the front view of an embodiment of the invention is shown, in which the radial extension of the opening 4 '' in the separate peripheral portions of the front side is not readily apparent.
  • FIG. 7 shows a section of the arrangement from FIG., 7 along the axis 20.
  • the gap between the edge surface 15 "and the fan wheel ring 11 'extends in a labyrinth-like manner partly in the axial, partly in the radial direction reached a stop-like shoulder 30 in the profile of the fan frame 3 ".
  • the shoulder 30 projects radially inwards and forms a surface 31 against which the fan ring 11 abuts contactlessly in the axial direction 10 perpendicular to the pivot plane.
  • FIG. 9 shows a longitudinal section of the arrangement from FIG. 7 along the axis 19, and there it is shown that in the region of an upper and lower peripheral section, which are again indicated by dashed lines in FIG. 7, the shoulder 30 is formed thinner in the axial direction 10 than in the other peripheral portions of the edge of the opening 4 "', so that in these areas an axial gap 10 enlarged gap between the Lüfterradring 11 'and the surface 31 results.
  • Another way of looking at the three-dimensional shape of the stop 30 can be formulated so that in the areas where parts of the shoulder 30 are omitted or removed within the separate peripheral portions, the radius of the edge surface 15 "of the opening 4" 'is increased.
  • FIGS. 7, 8 and 9 The use of the arrangement according to FIGS. 7, 8 and 9 is basically conceivable in such a way that the radially inwardly projecting step of the edge surface in the air stream can be upstream or downstream of the fan wheel, that is to say the air flow can be seen in FIGS 9 optionally be provided from left to right, but also from right to left.
  • FIGS. 10 and 11 show two different longitudinal sections of a modified fan device, wherein FIG. 10 shows the section in the region of the peripheral sections which are substantially cylindrically symmetrical, ie not radially widened, while FIG. 11 is a longitudinal section in FIG Plain represents, in which the two separate, diametrically opposite peripheral portions are located, in which the passage opening radially expanded and the axial gap between the fan 5 "and the edge 15 '" of the opening is increased.
  • Fig. 10 a constellation similar to that shown in Fig. 8 is shown.
  • the design of the edge surface of the opening according to FIG. 10 therefore looks similar in the region of the non-radially widened peripheral sections as in the case of the ventilating device according to FIG. 7.
  • peripheral sections which are designated in FIG. 7 by way of example by 17 ', 18' and in which there is a radially widened contour of the edge surface 15 "'of the opening 4"', this is achieved on the one hand by the shoulder 30 of the fan cowl 3 "in the axial direction of the axis 10 is reduced and that insofar on a Part of the edge surface 15 "'in the separate peripheral portions of the radius relative to the other peripheral portions is increased.
  • the contour of the edge surface 15 "' is concave, ie rounded, in such a way that a pitch movement of the fan wheel 5" along the edge surface 15 "' is made possible the concave edge surface 15 "'is shaped such that it corresponds to sections of a spherical surface around the ball center 32, wherein the ball center 32 corresponds to the intersection of a central axis 10 with a pitch axis of the fan wheel 5" perpendicular to the plane of the drawing Fan wheel in a pivot plane perpendicular to the plane, the pivot plane containing the central axis 10, has a tendency to pivot the fan within the plane around the axis perpendicular to the plane of the drawing through the ball center 32.
  • the continuous contour of the spherical surface is shown with dashed lines and 33.
  • the corresponding concave ext Design of the edge surface 15 "'thus allows the Lüfterradring 11' to remain in a yaw motion at a constant small distance from the edge surface 15" 'of the opening in the fan cowl.
  • the size of the axial gap between the fan ring and the edge of the opening thus changes only minimally during a pitching movement. It can thus be chosen in the constellation a total of a small axial gap.
  • edge surface 15 "'in the form of a spherical surface portion may in principle also be provided over the entire circumference of the opening.
  • the invention described in its various forms allows the provision of a small axial gap between a fan and the edge of the opening in a fan cowl, without a fear of contact between the fan and the edge of the opening during a pivoting movement of the fan device by yaw / gyroscopic moments ,
  • the use of the arrangement according to FIGS. 10 and 11 is also conceivable in principle in such a way that the radially inwardly projecting step of the edge surface in the air flow can be upstream or downstream of the fan wheel, that is to say the air flow can optionally be shown in FIGS left to right, but also be provided from right to left.
  • FIG. 12 shows in a longitudinal section a cooler 6, which is impinged by air in the direction shown by the arrow 28.
  • the air flow is generated at least partially by a fan wheel 5 "'driven by a motor 12.
  • a baffle plate 34 is arranged behind the fan wheel 5"'.
  • the fan wheel has a fan ring 11 "with an obliquely radially outwardly extending lip 35, which has approximately the shape of a complementary lip 36 of the edge surface 15" ".
  • the lip 36 is axially separated from the fan wheel 5 '' in the two separate peripheral sections. put away.
  • Fig. 13 shows in a longitudinal section a cooler 6 in front of a fan 5 "".
  • the fan ring 11 '"of the fan 5" has a lip 37, which lies opposite a step 38 of the edge surface 15.
  • the step 38 is in the two separate peripheral sections axially in the direction of the arrow 28, which also designates the air flow direction the lip 37 of the Lüfterradringes 11 "'offset away.
  • FIGS. 14, 15, 16 and 17 each show in longitudinal section a fan ring 39, 39 ', 39 ", 39'” and an edge surface 40, 40 ', 40 ", 40”' of an opening in a fan cowl or socket of a fan.
  • a Lüfterradring 39 is shown with a radially perpendicular to the axial direction outwardly projecting lip 41, which faces a sealing surface 31 'at a step 45 of the edge surface 40 to form a gap.
  • the step 45 is axially displaced away from the lip 41 in the direction of the arrow 28, which designates the direction of flow, in the two separate peripheral sections.
  • 15 shows a Lüfterradring 39 'with an obliquely outwardly projecting lip 42 which is opposite to a radially inwardly projecting, in cross-section hook-shaped lip 46 of the edge surface 40' to form a gap.
  • the lip 46 is offset axially in the two separate peripheral portions of the fan ring 39 'opposite to the direction indicated by the arrow 28.
  • FIG. 16 shows a fan ring 39 "with a radially outwardly pointing lip 43. This lies opposite a radially inwardly projecting, in cross-section hook-shaped lip 47 of the edge surface 40" to form a gap.
  • the lip 47 is offset axially in the two separate peripheral portions of the fan ring 39 "against the direction indicated by the arrow 28.
  • FIG. 18 shows a front view of a fan device with a fan frame 3 "', on which two separate, mutually opposite circumferential sections 17" and 18 "are drawn at the top and bottom, on which a radially inwardly projecting projection of the edge surface is in Offset axial direction of the room provided for the fan wheel, that there is the gap in the axial direction between the projection and the fan at rest 12.5 mm, while the comparable gap in the offset by 90 ° relative to the peripheral portions 17 “, 18", lying in the horizontal peripheral portions 49, 50 only 9.5 mm in the axial direction.
  • peripheral regions 17 “, 49, 18" and 50 lying peripheral regions 51, 52, 53, 54 is a, in particular stepless, transition of the gap provided , FIG.
  • FIG. 19 shows a section through a part of an arrangement according to FIG. 18 in the region 17 ", where 10 denotes a center and rotation axis, 39""a fan ring and 40"'the corresponding edge surface on the fan frame.
  • the gap 57 in the axial direction in the case of FIG. 18, ie in the section in the region 17 “of FIG. 18, is 12.5 mm and the gap 58 in the case of FIG. 20, ie in the peripheral regions 49, 50 where 20.
  • the fan ring 39 “” has a bevel or conically widening region on its peripheral edge 55 facing the edge surface 40 "", while the edge of the frame opening has a cone 56, which extends radially inside the fan ring 39 "in the axial direction on the Lüfterradring ..
  • the conical edge 55 of the fan ring 39""and the cone 56 of the edge of the frame opening may have substantially the same cone angle and together form parts of a labyrinth seal ,

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Air-Conditioning For Vehicles (AREA)

Abstract

L'invention concerne un dispositif de ventilation pourvu d'un support, en particulier d'un cadre de ventilateur (3, 3', 3"). Ce dispositif comprend une ouverture continue (4, 4', 4", 4"') sensiblement circulaire, permettant de loger une roue de ventilateur (5, 5', 5", 5'", 5"") tournant autour de l'axe central (10) de l'ouverture. Cette ouverture (4, 4', 4", 4"') est délimitée par une surface de bord (15, 15', 15", 15'", 15"", 15""', 40, 40', 40", 40'", 40"") présente sur toute la périphérie de l'axe médian (10) de manière sensiblement cylindro-symétrique. Pour la surface de bord (15, 15', 15", 15"', 15"", 15""', 40, 40', 40", 40"'), dans deux sections périphériques (17, 17', 17", 18, 18', 18") séparées, diamétralement opposées, en comparaison de la forme cylindro-symétrique dans les autres sections périphériques, le rayon est au moins en partie augmenté et/ou une partie saillante périphérique (30, 36, 38), faisant radialement saillie vers l'intérieur, de la surface de bord (15, 15', 15", 15"', 15"", 15""', 40, 40', 40", 40"', 40"") est décalée axialement de l'espace présent pour la roue de ventilateur (5, 5', 5", 5"', 5""). La saillance correspondante de la surface de bord (15, 15', 15", 15"', 15"", 15"'", 40, 40', 40", 40"', 40"") de l'ouverture (4, 4', 4", 4'") permet également d'éviter, en cas de mouvement de giration d'une roue de ventilateur utilisée, lors du pivotement du dispositif de ventilation, l'établissement d'un contact et/ou la production de bruits entre la roue de ventilateur et le bord de l'ouverture (4, 4', 4", 4"') dans le cadre (3, 3', 3") du ventilateur.
EP13802533.3A 2012-11-30 2013-11-15 Dispositif de ventilation et véhicule pourvu d'un dispositif de ventilation Active EP2926013B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012023454.6A DE102012023454A1 (de) 2012-11-30 2012-11-30 Lüftereinrichtung und Fahrzeug mit einer Lüftereinrichtung
PCT/EP2013/003443 WO2014082711A2 (fr) 2012-11-30 2013-11-15 Dispositif de ventilation et véhicule pourvu d'un dispositif de ventilation

Publications (2)

Publication Number Publication Date
EP2926013A2 true EP2926013A2 (fr) 2015-10-07
EP2926013B1 EP2926013B1 (fr) 2019-01-09

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EP13802533.3A Active EP2926013B1 (fr) 2012-11-30 2013-11-15 Dispositif de ventilation et véhicule pourvu d'un dispositif de ventilation

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US (1) US9850914B2 (fr)
EP (1) EP2926013B1 (fr)
KR (1) KR101858084B1 (fr)
CN (1) CN104822947B (fr)
BR (1) BR112015012367A2 (fr)
DE (1) DE102012023454A1 (fr)
ES (1) ES2716821T3 (fr)
WO (1) WO2014082711A2 (fr)

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GB201911175D0 (en) * 2019-08-05 2019-09-18 Cummins Generator Technologies Fan for a rotating electrical machine
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Also Published As

Publication number Publication date
US20150260200A1 (en) 2015-09-17
CN104822947B (zh) 2018-06-29
ES2716821T3 (es) 2019-06-17
BR112015012367A2 (pt) 2017-07-11
KR101858084B1 (ko) 2018-05-15
US9850914B2 (en) 2017-12-26
CN104822947A (zh) 2015-08-05
EP2926013B1 (fr) 2019-01-09
KR20150091143A (ko) 2015-08-07
WO2014082711A3 (fr) 2014-08-07
DE102012023454A1 (de) 2014-06-05
WO2014082711A2 (fr) 2014-06-05

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