EP3486499A1 - Module de ventilateur de radiateur - Google Patents

Module de ventilateur de radiateur Download PDF

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Publication number
EP3486499A1
EP3486499A1 EP18204663.1A EP18204663A EP3486499A1 EP 3486499 A1 EP3486499 A1 EP 3486499A1 EP 18204663 A EP18204663 A EP 18204663A EP 3486499 A1 EP3486499 A1 EP 3486499A1
Authority
EP
European Patent Office
Prior art keywords
struts
strut
profile
describes
fan
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
EP18204663.1A
Other languages
German (de)
English (en)
Other versions
EP3486499B1 (fr
Inventor
Marco Wichers
Jörn Smidt
Peter Arnold
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
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Publication of EP3486499A1 publication Critical patent/EP3486499A1/fr
Application granted granted Critical
Publication of EP3486499B1 publication Critical patent/EP3486499B1/fr
Active 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
    • F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/12—Blades
    • F01D5/14—Form or construction
    • F01D5/141—Shape, i.e. outer, aerodynamic form
    • 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
    • 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
    • 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
    • F01P5/04—Pump-driving arrangements
    • 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
    • F04D29/18—Rotors
    • F04D29/181—Axial flow rotors
    • 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
    • F04D29/18—Rotors
    • F04D29/22—Rotors specially for centrifugal pumps
    • F04D29/24—Vanes
    • F04D29/242—Geometry, shape
    • F04D29/245—Geometry, shape for special effects
    • 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
    • F04D29/38—Blades
    • F04D29/384—Blades characterised by form
    • 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
    • F04D29/38—Blades
    • F04D29/384—Blades characterised by form
    • F04D29/386—Skewed blades
    • 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
    • F04D29/38—Blades
    • F04D29/388—Blades characterised by construction
    • 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
    • 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
    • F04D29/542—Bladed diffusers
    • 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
    • F04D29/542—Bladed diffusers
    • F04D29/544—Blade shapes
    • 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
    • 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
    • F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
    • F01P11/10—Guiding or ducting cooling-air, to, or from, liquid-to-air heat exchangers
    • 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
    • F01P5/04—Pump-driving arrangements
    • F01P2005/046—Pump-driving arrangements with electrical pump drive
    • 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
    • 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
    • F04D29/002—Details, component parts, or accessories 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
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/263—Rotors specially for elastic fluids mounting fan or blower rotors on shafts
    • 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

Definitions

  • the present invention relates to a radiator fan module, in particular an electrically operated radiator fan module, in particular for motor vehicles, with rear struts located in the main flow direction.
  • the cooling system in an internal combustion engine mainly discharges the heat that is given off to the walls of the combustion chamber and cylinder because the combustion process is not ideal. Since too high temperatures would damage the engine (tearing off the lubricating film, burning the valves, etc.), the combustion engine must be actively cooled.
  • Modern internal combustion engines especially four-stroke engines in motor vehicles, are liquid-cooled, with a few exceptions, with a mixture of water, antifreeze and corrosion inhibitor is usually used as a coolant.
  • the coolant is pumped via hoses, pipes and / or ducts through the engine (cylinder head and engine block) as well as, if necessary, by thermally stressed engine attachments, such as exhaust gas turbocharger, generator or exhaust gas recirculation cooler.
  • the cooling liquid absorbs heat energy and dissipates it from the above-mentioned components.
  • the heated coolant continues to flow to a cooler.
  • This cooler - formerly often made of brass, today mostly out Aluminum - is usually mounted on the front of the vehicle where an airflow absorbs heat energy from the coolant and cools it before returning to the engine, closing the coolant circuit.
  • a radiator fan module is provided in the (main) flow direction before (upstream) or downstream (downstream) of the radiator, which may be mechanically driven via a belt drive or electrically via an electric motor.
  • the following statements relate to an electrically driven radiator fan module.
  • a radiator fan module conventionally consists of a fan cowl, which has a fan wheel recess.
  • a motor holder is arranged, which is mechanically connected via struts with the fan frame.
  • the struts can be arranged starting from the air volume flow on the downstream or upstream side of the fan cowl.
  • a motor in particular an electric motor, held.
  • a fan wheel is arranged, which - driven by the electric motor - rotates in the Lüfterradaus supraung.
  • radiator fan modules in addition to the volume of air delivered per unit time and the available space, especially its arrangement based on the air flow upstream or downstream of the radiator and / or its dimensions, and the noise relevant.
  • the struts on the upstream or downstream side of the fan frame are arranged, which is due to the fundamentally different aerodynamic properties of these two variants: While the air on the upstream side (suction side) of the fan cowl rather slow and at least Essentially laminar flows, it is on the downstream side (pressure side) of the fan cowl, ie after passing through the Lüfterradaus fundamentalung, faster, denser and more swirled than before. For this reason, apart from the main requirement of holding the motor holder, the requirements for front and rear struts are fundamentally different: While forward struts can also take on supply and / or air conduction functions, those for rear struts are at least essentially irrelevant. It is more important to make the struts as "aerodynamically" as possible “invisible”, i. to design the struts so that they affect the downstream airflow as little as possible.
  • the DE 10 2012 112 211 A1 relates to a blower unit for a heat exchanger.
  • the disclosed blower unit has straight, rear spokes which connect an annular support member for receiving an electric drive motor with a plate-like support structure.
  • the object of the present invention is to make available an improved radiator fan module, which is advantageous, in particular with regard to noise development.
  • a radiator fan module comprises a fan cowl, a fan wheel recess which is formed in the fan cowl, a motor holder which is mechanically connected to the fan cowl via rear braces viewed in the flow direction, a motor, in particular an electric motor, which is at least partially mounted in the engine mount, and a fan wheel disposed in the fan wheel recess and rotationally driven by the motor about a rotation axis, the fan wheel having a plurality of wing members, wherein at least all elements of a group comprise at least one of the struts and at least one of the wing members have foreshortened or back-splayed.
  • a “radiator fan module” in the sense of the present invention is in particular an assembly, which is arranged upstream of or behind a radiator of a vehicle and which is designed, in particular adapted, to generate an air volume flow which passes through the radiator and / or or extending around the radiator, wherein the air volume flow receives thermal energy from the radiator.
  • a "fan cowl” in the sense of the present invention is in particular a frame in which the fan wheel is held, and in turn is preferably arranged on or in the vicinity of the radiator, in particular fastened.
  • a fan cowl according to the present invention preferably has a plastic material, in particular a plastic compound, in particular, the fan cowl is formed from this.
  • the fan cowl a metal material, for example iron, steel, aluminum, magnesium or the like, on, in particular is at least partially, in particular at least substantially, in particular completely, formed from this.
  • a fan shroud may also have more than one LüfterradausNFung, a motor holder, a motor and a fan, in particular, the present invention is suitable for use in radiator fan modules with two or more, in particular two, fan wheels.
  • the fan frame additionally has at least one closable opening, in particular at least one flap, in particular a plurality of the same. This is particularly advantageous since further air-guiding properties can be realized in this way.
  • a "Lsymmetricerradaus4-6ung" within the meaning of the present invention is in particular a material recess within the fan cowl.
  • struts which mechanically, in particular and electrically and / or electronically connect a likewise arranged in the Lüfterradausappellly motor holder with the fan frame.
  • the Lüfterradausnaturalung is limited by a Zargenring.
  • a "motor holder" in the sense of the present invention is in particular a device for mechanically fixing the motor to the fan cowl, in particular for providing the torque counteracting the fan wheel.
  • the motor holder is an at least substantially annular structure in which the motor is held. This is particularly advantageous because in this way an advantageous cooling air flow is not affected by the engine.
  • Flow direction in the sense of the present invention designates in particular the so-called main flow direction, ie the flow which passes parallel to the axis of rotation of the fan through the Lüfterradaus supraung the fan cowl, and is used to cool the radiator.
  • “Struts” in the sense of the present invention are in particular beam or crescent-shaped structures which provide a mechanical connection between the engine mount and the fan cowl.
  • the struts may have a teardrop-shaped cross-section to achieve advantageous aerodynamic and / or acoustic effects.
  • a "motor” in the sense of the present invention is in particular a machine that performs mechanical work by converting an energy form, for example thermal / chemical or electrical energy, into kinetic energy, in particular a torque. This is particularly advantageous, since in this way the fan cowl can be operated at least substantially independently, except for the supply of energy, that is, without being supplied externally with kinetic energy, such as a wedge or toothed belt.
  • An “electric motor” in the sense of the present invention is an electromechanical converter (electric machine), which converts electrical power into mechanical power, in particular into a torque.
  • the term electric motor within the meaning of the present invention includes, but is not limited to, DC motors, AC motors and three-phase motors or brushless and brushless electric motors or internal rotor and external rotor motors. This is particularly advantageous because electrical energy is easy to transfer compared to mechanical or chemical energy Represents energy form, with which the required torque is provided for driving the fan wheel.
  • a "fan” in the context of the present invention is in particular a rotationally symmetrical component which a hub, in particular a hub pot, which connects the fan to a motor, in particular via a protruding from this shaft, in such a way that the torque which of the Motor is generated, at least substantially completely transferred to the fan.
  • a "wing element” is a plane inclined on the axis of rotation, inclined at least substantially flat body, which is arranged on the hub pot and which is provided, in particular adapted, for generating an air volume flow. as soon as the fan wheel is put in a rotary motion.
  • the wing elements are preferably inclined relative to the axis of rotation in an angular range of -90 ° to + 90 °, in particular from -75 ° to + 75 °, in particular from -60 ° to + 60 °, in particular from -45 ° to + 45 ° , in particular from -30 ° to + 30 ° and more preferably from -15 ° to + 15 °.
  • wing elements are also understood to mean, in particular, vanes, airfoils or rotor blades.
  • forward-splayed means, in particular, that the tip of the vane element, viewed in the direction of rotation, leads the middle of the vane element.
  • reverse-angled means, in particular, that the tip of the wing element, viewed in the direction of rotation, lags the middle of the wing element.
  • the geometry of the at least one strut follows at least substantially the geometry of the at least one wing element with respect to the expansion in a plane perpendicular to the axis of rotation.
  • the geometry of the strut skeleton line of the at least one strut follows at least substantially the geometry of the wing element skeleton line of the at least one wing element with respect to the extent in a plane perpendicular to the axis of rotation.
  • the geometry of the strut with respect to the radial extent at least substantially follows the geometry of the wing element, it can be achieved that the leading edge of the wing element does not meet the strut at the same time on the entire length, but that there is only one point of overlap, which in radial Direction wanders.
  • the intersection of the two cutting edges travels along the direction of extension as soon as the scissors are closed.
  • the group comprises a plurality, in particular all, of the struts and / or a plurality, in particular all, of the wing elements.
  • a "strut skeleton line" in the sense of the present invention designates the connecting line of the circle center points inscribed in a profile, the skeleton line running straight from the nose circle center point to the profile nose.
  • Another alternative definition, which in the sense is explicitly encompassed by the invention defines the strut skeleton line in that it consists of the midpoints between the top and bottom perpendicular to the X-coordinate or chord. The course of the skeleton line essentially determines the flow properties.
  • Important geometric figures are the curvature height and the buckling reserve, with strut profiles with a straight or S-shaped skeleton line having a pressure point that changes only slightly with the angle of attack.
  • a "wing element skeleton line" in the sense of the above invention also referred to as profile centerline, camber line or curvature line, denotes the connecting line of the circle center points inscribed in a profile, wherein the skeleton line runs straight from the nose circle center point to the profile nose.
  • Another alternative definition which is explicitly included within the meaning of the invention, defines the wing element skeleton line as consisting of the midpoints between the top and bottom perpendicular to the X-coordinate or chord. The course of the skeleton line essentially determines the flow properties. Important geometric characteristics are the curvature height and the curvature reserve, with wing element profiles with a straight or S-shaped skeleton line having a pressure point that changes only slightly with the angle of attack.
  • n max equidistant profile sections wherein the relationships described here for at least one, in particular a plurality, in particular a vast majority, n max profile sections must be fulfilled.
  • the geometry of the wing element flows directly into the design of the strut with a.
  • the formula includes parameters of the wing element skeleton line in the form of the sickle angle ⁇ s (n) at the profile section n of the wing element.
  • the defined functional relationships for X and Y coordinates apply to all sections n ⁇ [0; n max ].
  • the struts have a semi-symmetrical profile.
  • a “profile” in the sense of the present invention is in particular the shape of the cross section of the strut, wherein the sectional plane is perpendicular to a radial vector of the radiator fan module.
  • This radial vector is defined on the one hand by the orientation of the axis of rotation on which this vector is perpendicular, as well as the point of the strut skeleton line in the sectional plane to be considered.
  • biconvex profile a profile of low curvature, in particular in the range of 1-3%, to understand, which has a curvature, but no concave contours.
  • the above-described advantages of the radiator fan module according to the invention can be further improved by not only the position of the strut is optimized in relation to the wing element, but also the design of the strut, so that they are as advantageous as possible in the main volume flow inserts, so as to avoid a deflection and / or deflection of the air flow as good as possible.
  • the struts are arranged to the rotation axis with an angle of attack ⁇ in the range between 5 degrees and 45 degrees, preferably between 10 degrees and 25 degrees.
  • angle of attack in the context of the present invention also called “angle of attack” is the angle between the direction of the inflowing fluid and the soul of the profile, ie the imaginary linear connection between the profile nose and the profile trailing edge.
  • the struts exiting the motor holder with an angle ⁇ which has a value in the range of -30 ° to + 30 °, in particular in the range of -20 ° to + 20 °, in particular in the range of 10 ° to + 10 °.
  • the struts enter the fan cowl with a predetermined angle ⁇ , which has a value in the range of -90 ° and + 30 °, in particular in the range of -75 ° and + 15 °, in particular in the range of -60 ° to 0 °.
  • ⁇ a predetermined angle ⁇
  • the struts can also be arranged as engagement protection and can be adapted to the available installation space when designing the system.
  • a reinforcement is provided, which is formed between the motor holder and one of the struts, in particular between the motor holder and a plurality of the struts, in particular between the motor holder and each strut.
  • the reinforcement is formed in particular in the form of a collection of material, which increases the radius at the transition from the strut to the motor holder, in order to thus allow in particular an improved introduction of force.
  • the reinforcement increases the strength of a strut, so that the strut is very dimensionally stable.
  • the reinforcement is preferably formed integrally with the strut and / or the motor holder.
  • the fan cowl, the engine mount and the struts are formed as a one-piece plastic injection molded part.
  • the struts have a reinforcement.
  • the reinforcement has at least partially metal.
  • the reinforcement is in the form of a steel sheet. This is particularly advantageous according to an embodiment, since in this way the dimensional stability and the strength of the struts can be increased.
  • the number of struts is different from the number of wing elements, in particular the radiator fan module has more struts than wing elements, in particular the radiator fan module has two struts more than wing elements, in particular the radiator fan module comprises eleven struts and nine wing elements ,
  • This embodiment is particularly advantageous, since in this way each wing element is in a different phase of sweeping the strut, resulting in a more homogeneous noise emission with a view to the overall system.
  • Fig. 1 shows a schematic plan view of a fan frame 2 of a radiator fan module 1 of the prior art with an indicated strut 10 according to one embodiment of the present invention.
  • the cooling fan module 1 has a fan frame 2, a LüfterradausriseriseOSEung 4, which is formed in the fan frame 2, a motor holder 3, which is seen in the flow direction behind lying (previously known, straight) struts 100 mechanically connected to the fan frame 2, a motor, in particular Electric motor, 5, which is at least partially mounted in the motor holder 3, a fan 6, which is arranged in the LüfterradausEnglishung 4, and which is rotatably driven by the motor 5 about an axis of rotation R, wherein the fan 6 has a plurality of wing elements 6a ,
  • the motor holder 3 is connected to the fan frame 2 via straight struts 100, as they are well known from the prior art.
  • the reference numeral 10 is in the Fig. 1 already indicated a strut according to the invention, as will be described in detail below. In Fig. 1 In particular, the geometric difference between previously known struts 100 and the struts 10 according to the invention can be seen.
  • Fig. 2 shows a schematic plan view of a section of a fan frame 2 according to an embodiment of the present invention.
  • the fan frame 2 is made of plastic, in particular in the form of a one-piece plastic injection molded part.
  • the struts 10 extend parabolic from the edge of LüfterradausEnglishung 4 to the motor holder 3 and hold the motor holder in the Lüfterradausnaturalung 4 in position.
  • the struts 10 each have a reinforcement 11, which is the connection between the motor holder 3 and one of the Struts 10 reinforced.
  • the reinforcement 11 is preferably formed integrally with the strut 10.
  • the fan frame 2, the struts 10 and the motor holder 3 are a one-piece plastic injection molded part.
  • mounting interfaces 30 are provided, to which a motor 5 can be attached. Further, the angle ⁇ is shown, which indicates at what angle the strut 10 enters the motor holder 3.
  • Legs of the angle ⁇ are on the one hand an extension vector 14 of the strut 10 at the exit point of the strut 10 from the motor holder 3 and on the other hand a radial vector 15 through the exit point of the strut 10 from the motor holder 3.
  • ⁇ has a Value in the range of -30 ° to + 30 °.
  • an angle ⁇ is shown, which indicates at what angle the strut 10 enters the edge of the Lüfterradausströmung 4.
  • Legs of the angle ⁇ are on the one hand an extension vector 16 of the strut 10 at the entry point of the strut 10 in the fan frame 2 and on the other hand a radial vector 16a through the entry point of the strut 10 in the fan frame 2.
  • ⁇ has a value in the range of -90 ° and + 30 °.
  • the starting point 17 is the exit point of the strut 10 from the motor holder 3 and the end point 18 is defined by the entry point of the strut 10 in the fan frame second
  • Fig. 3 shows a schematic plan view of a fan frame 2 according to another embodiment of the present invention Invention together with two sectional views. That in the Fig. 3 illustrated radiator fan module 1 is a radiator fan module with rear struts 10, ie viewed in the flow direction, which as shown in the Fig. 3 pointed out from the sheet, the air is first accelerated and compressed by the rotating fan 6 before it hits the struts 10, which is the particular challenge in the design of such cooling fan modules and in particular the struts 10, makes.
  • the fan 6 with the plurality of wing elements 6a is shown for the first time. It can be seen in this illustration particularly well the effect of the invention, as the wing elements 6a -. From the perspective of the representation of Fig. 3 - move past the struts 10 past them. According to the preferred embodiment of Fig. 3 the fan frame 2 eleven struts invention 10 and the fan 6 6 nine wing elements 6a on. This constructive property ensures that each wing element 6a is at any time during the rotation of the fan wheel in a different phase of sweeping one of the struts 10. This leads to an advantageous, in particular more homogeneous, noise emission of the overall system.
  • Fig. 4 shows a schematic perspective view of a single strut 10 according to an embodiment of the present invention.
  • This connects the motor holder 3 with the fan frame 2 and holds the motor holder 3 in the Lüfterradausströmung 4 of the fan frame 2 in position.
  • the struts 10 provide the counter torque which is opposite to the torque generated by the motor with which the fan 6 is driven. Because of this, be on the pursuit 10 high forces, which leads to increased stiffness requirements of these.
  • the strut 10 has a parabolic shape.
  • a skeleton line 12 of the strut 10 extends from the starting point 17 on the motor holder to the end point 18 on the fan frame 2.
  • the apex 13 of the strut is located in the axial direction at least substantially in the middle of the strut 10th
  • the strut 10 also has an airfoil profile.
  • An area around a front edge 26 of a profile 20, in particular a cross-sectional profile, is thicker than an area around a trailing edge 27 of the profile 20.
  • the airfoil profile of the strut 10 is a semi-symmetrical profile.
  • Fig. 5 shows a schematic perspective view of the profile and the Verlaus stringer skeleton line of a single strut 10 according to an embodiment of the present invention.
  • the profile 20 of the strut 10 is formed according to this embodiment as a semi-symmetrical profile, the skeleton line 12 of the strut 10 is parabolic.
  • Fig. 6 shows a schematic three-dimensional detail view of a single strut 10 between the motor holder 3 and the fan frame 2 according to an embodiment of the present invention.
  • the reinforcement 11 has a wall 19 which extends from the strut 10 at an angle. According to one embodiment, this angle is equal to the angle ⁇ , so that the strut 10 and the wall 19 are arranged mirror-symmetrically to a perpendicular of the circular motor holder 3.
  • the strut 10 becomes more stable through the wall 19 and thereby can securely hold the motor 5 in the motor holder 3 in position.
  • the reinforcement 11 is integrally formed with the strut 10 and the motor holder 3 according to the embodiment shown.
  • Fig. 7 shows a schematic sectional view of a single strut 10 according to an embodiment of the present invention.
  • the profile 20 of the strut 10 according to this embodiment is a semi-symmetrical profile 20.
  • a profile curvature of the top 21 and a profile curvature of the bottom 22 of the profile 20 extend in the same direction.
  • the top 21 is concavely curved while the bottom 22 has a convex curvature.
  • the profile 20 has a profile thickness 23 and a profile depth 25.
  • the profile 20 has a nose radius 24, which indicates the radius of the nose of the profile.
  • the region of the trailing edge 27 of the profile 20 is narrower than the area of the leading edge 26 of the profile 20.
  • the angle of attack ⁇ of the profile according to this embodiment is about 45 degrees normal to the blade surface. The air flows in the direction of the arrow 29 around the strut 10 around.
  • Fig. 8 shows a schematic sectional view of a single strut 10 according to another embodiment of the present invention.
  • a reinforcement 31 is provided in the strut 10.
  • the reinforcement 31 may at least partially comprise metal.
  • the reinforcement 31 is formed from a steel sheet.
  • the reinforcement 31 may also be formed of aluminum.
  • the strut 10 can be formed particularly dimensionally stable.
  • Fig. 9a shows a diagram with measurements of a cooling fan module of the prior art
  • Fig. 9b a diagram with measurements of a radiator fan module according to an embodiment of the present invention.
  • Fig. 9a and 9b Diagrams shown each show the course of a sum level and a fan blade order generated by the system.
  • the sum level indicates the total noise emission over all frequencies. In both figures, this is the eleventh fan blade order, which depends on the number of wings, their geometric arrangement and sickle.
  • the so-called 10 dB criterion is specified, which runs at a distance of 10 dB below the sum level.
  • the 10 dB criterion is particularly relevant for evaluating the sound of fan noise: the 10 dB criterion states that those frequency components which are below this 10 dB criterion are not perceived as disturbing. It can be imagined as in an open-plan office, where individual voices sink into a general murmur. Conversely, noise components that violate this 10 dB criterion are perceived as particularly disturbing. If all frequency components are below the 10 dB criterion, the noise emission is perceived as a pleasant, "full" hum.
  • the pictured Fig. 9a and 9b have been measured at the component level in a semi-anechoic room with a heat exchanger.
  • the eleventh fan blade order improves significantly as compared to the prior art.
  • the sum level improves by up to 4 dB compared to the state of the art and thus meets the 10 dB criterion for the first time.
  • the struts may be provided for example on the pressure side and / or on the negative pressure side.
  • the fan may be adapted to the shape of the struts.
  • the leading edge and / or the trailing edge of the fan wheel has a curvature which corresponds to the curvature of the struts.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Fluid Mechanics (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
  • Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
EP18204663.1A 2017-11-15 2018-11-06 Module de ventilateur de radiateur Active EP3486499B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102017126823.5A DE102017126823A1 (de) 2017-11-15 2017-11-15 Kühlerlüftermodul

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EP3486499A1 true EP3486499A1 (fr) 2019-05-22
EP3486499B1 EP3486499B1 (fr) 2024-05-01

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US (1) US10989055B2 (fr)
EP (1) EP3486499B1 (fr)
JP (2) JP2019105269A (fr)
KR (1) KR102296564B1 (fr)
CN (1) CN110030211B (fr)
DE (1) DE102017126823A1 (fr)
ES (1) ES2980394T3 (fr)
MX (1) MX2018013960A (fr)

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Also Published As

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MX2018013960A (es) 2019-05-16
KR102296564B1 (ko) 2021-08-31
EP3486499B1 (fr) 2024-05-01
ES2980394T3 (es) 2024-10-01
JP2019105269A (ja) 2019-06-27
CN110030211B (zh) 2020-10-27
US10989055B2 (en) 2021-04-27
JP2021165556A (ja) 2021-10-14
CN110030211A (zh) 2019-07-19
US20190353083A1 (en) 2019-11-21
DE102017126823A1 (de) 2019-05-16
KR20190055764A (ko) 2019-05-23

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