EP1327079B1 - Installation de ventilation - Google Patents

Installation de ventilation Download PDF

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Publication number
EP1327079B1
EP1327079B1 EP01980292A EP01980292A EP1327079B1 EP 1327079 B1 EP1327079 B1 EP 1327079B1 EP 01980292 A EP01980292 A EP 01980292A EP 01980292 A EP01980292 A EP 01980292A EP 1327079 B1 EP1327079 B1 EP 1327079B1
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EP
European Patent Office
Prior art keywords
fan
installation according
control unit
fan installation
heat sink
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP01980292A
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German (de)
English (en)
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EP1327079A1 (fr
Inventor
Dirk Herke
Thomas Kanamüller
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.)
AFL Europe GmbH
Original Assignee
AFL Europe GmbH
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
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Application filed by AFL Europe GmbH filed Critical AFL Europe GmbH
Publication of EP1327079A1 publication Critical patent/EP1327079A1/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
    • F04D29/58—Cooling; Heating; Diminishing heat transfer
    • F04D29/582—Cooling; Heating; Diminishing heat transfer 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
    • F04D25/00—Pumping installations or systems
    • F04D25/16—Combinations of two or more pumps ; Producing two or more separate gas flows
    • F04D25/166—Combinations of two or more pumps ; Producing two or more separate gas flows using fans

Definitions

  • the invention relates to a fan system for a cooling system of a motor vehicle with at least two fans, each comprising a arranged in a separate housing electric fan motor and a driven by this fan, and with a control unit for operating the fan motors.
  • Such fan systems are known from the prior art.
  • An example is in the document US 5,947,189 shown. They are usually used to supply large-area radiator in a motor vehicle with the necessary cooling air, especially when an increased cooling capacity is required.
  • the fans are usually arranged before or after the radiator to produce the air flow through the radiator. Furthermore, the fans are controlled by one or two control units, which are arranged separately in the engine compartment.
  • the invention has for its object to improve a fan system of the generic type such that it is as simple and inexpensive as possible.
  • control unit in the housing of one of the fans is arranged and operates both the fan motor arranged in this housing and the fan motor of the other fan.
  • the advantage of the solution according to the invention is the fact that with this solution on the one hand separately to be arranged in the engine compartment control unit and thus a device less in the engine compartment must be installed, so that in particular in confined spaces, a gain in terms of space is given.
  • control unit in the housing of the fan and the number of lines, since only to the one fan a supply line to power the fan system is to lay and from this fan to the other fan a supply line.
  • another advantage of the inventive solution is the fact that can be achieved with the arrangement of the control unit in the housing of the fan in a simple manner also defined ratios for the cooling of the control unit, so that the entire problem concerning the cooling of an additional separately arranged in the engine compartment control unit is eliminated.
  • control unit can be integrated into the housing of a fan without its volume increases appreciably, so that thus a significant gain in space in the engine compartment of the motor vehicle can be achieved.
  • control unit in the housing of a fan additionally an improvement in terms of electromagnetic compatibility, since all possibly responsible for faults in the electrical system components such as fan motors and control unit summarized as compact and thus better shielded and thus total have a lower potential for interference in the motor vehicle.
  • the fan system comprises a cable harness which is connectable to both fans and has a connection plug connection with a supply connection and an external connection.
  • the cable harness is connectable via a plug connection with each of the fans.
  • the cable harness is constructed so that it has a running between the fans connecting line with a feed line.
  • the connecting line also has a ground line in order to advantageously achieve the best possible ground connection between the control unit and the fan motor, which is not in the same housing as the control unit is arranged.
  • the wiring harness has a supply line extending from the fan provided with the control unit to the connection plug connection with a feed line and an input line.
  • a particularly simple solution provides that the supply line and the connecting line form a coherent cable harness and thus both lines are connected via a common connector with the fan provided with the control unit and a further connector with the other fan, so that a total of such a harness the fan system according to the invention a total of only three connectors, namely the common connection plug connection and a plug connection for establishing the connection with each of the fans must include, in the case of the fan provided with the control unit simultaneously with the control unit can be produced.
  • control unit comprises a common output stage for the operation of all fan motors, so that all the fan motors can be operated via the same output stage, preferably in parallel connection.
  • control unit for the operation of each of the fan motors includes its own power amplifier, wherein the number of fan motors corresponding power amplifiers of the control unit are also arranged in the housing of the fan and the other fan of the is supplied for this intended power amplifier via the wiring harness and thus has no control electronics.
  • an advantageous solution provides that the control unit is thermally coupled to a heat sink and thus the heat of the control unit can be discharged via this heat sink.
  • the heat is generated in the final stage to the control unit, so that it is particularly advantageous if each output stage is thermally coupled to the heat sink.
  • thermo coupling of an electronic switch of the output stage with the heat sink and a freewheeling diode associated therewith with the heat sink is preferred.
  • the cooling of the heat sink could be done even in different ways.
  • the heat sink is arranged on one of the fans, it is particularly favorable; when the heat sink is air-cooled.
  • the heat sink is expediently provided with a cooling fin body in order to achieve the largest possible surface area for heat dissipation to the air flow.
  • each of the output stages is coupled to its own fin body, so that the heat of each of the output stages can be dissipated in a particularly efficient manner.
  • the heat sink With regard to the air cooling, it would be conceivable, for example, to arrange the heat sink so that it is arranged on an outer side of the housing or protrudes from the housing and of which of the. Fan generated and the radiator passing through the air flow is streamed and cooled.
  • a particularly efficient cooling of the heat sink results when the housing of the fan provided with the control unit is flowed through by an airflow that can be generated by the fan and the cooling body is flown by the air flow.
  • the control unit according to the invention can be cooled particularly efficiently.
  • the advantage of this solution is the fact that the air flowing through the housing, which also serves in particular for cooling the fan motor itself, can be used to cool the control unit and thus cooling the control unit with a forced air flow corresponding to the performance of the fan is possible, so that thereby always defined conditions are achieved in the cooling of the control unit, without special measures are required, because usually in such fans, the housing is penetrated anyway by a forced air flow for cooling the fan motor, so that in the inventive solution inevitably results in a targeted and defined cooling of the control unit, without additional measures are required.
  • a particularly expedient cooling can be achieved in that the heat sink is arranged in the region of an air opening of the housing, through which the air flow passes.
  • the air opening preferably lies in a wall region of the housing which surrounds the control unit.
  • control unit has a circuit board which extends in a direction transverse to the axis of rotation of the fan motor plane.
  • Such an arrangement of the circuit board in the housing of the fan has the great advantage that can be accommodated very space-saving in this control unit.
  • circuit board carries power supply lines for a commutator of the fan motor, so that no independent carrier assembly for the power supply to the commutator must be done, but they sit directly on the circuit board and thus are also connected in a simple manner with the circuit board can.
  • Such power supplies may be formed in any manner. It is particularly advantageous if the power supply lines have carbon brush holders arranged on the circuit board and brushes that are movable relative to these.
  • the power supply lines are thermally coupled to the heat sink.
  • a illustrated in Fig. 1 first embodiment of a fan system according to the invention for a cooling system, in particular a cooling system of a motor vehicle comprises a first fan 10 and a second fan 20, which are preferably held on a common carrier 30.
  • the first fan 10 comprises a first housing 12, in which a first fan motor 14 is arranged, which serves to drive a first fan 16.
  • the second fan 20 includes a second housing 22 in which a second fan motor 24 is arranged, which serves to drive a second fan 26.
  • the fan system according to the invention is used for cooling a rectangular motor vehicle radiator, for example, which can be covered by the carrier 30, wherein air is blown through a first fan opening 32 of the carrier 30 with the first fan 10, while air is blown through a second fan opening 34 with the second fan 20 the carrier 30 is blown through.
  • the first fan motor 14 and the second fan motor 24 are operable by a common control unit 40, which in the case of the first embodiment, an output stage 42 which feeds both the first fan motor 14 and the second fan motor 24, which is connected in parallel therewith.
  • the output stage 42 has, for example, an electronic switching transistor 44 and a freewheeling diode 46, wherein the electronic switch 44 is located between a supply terminal 48 of the control unit 40 and feed lines 14a and 24a of the fan motors 14 and 24 and these clocked fed while the freewheeling diode 46 at switched off electronic switch 44 takes over the conditional by the inductance of the fan motors 14 and 24 current flow.
  • the electronic switch 44 is located between a supply terminal 48 of the control unit 40 and feed lines 14a and 24a of the fan motors 14 and 24 and these clocked fed while the freewheeling diode 46 at switched off electronic switch 44 takes over the conditional by the inductance of the fan motors 14 and 24 current flow.
  • the fan motors 14 and 24 are connected to ground lines 14b and 24b to a ground terminal 50 of the control unit 40.
  • the electronic switch 44 is controlled via a control line 52 by a drive unit 54, which in turn is operable by a logic circuit 56, wherein the logic circuit 56, the drive unit 54 is operable to operate the electronic switch 44 with a pulse width modulated signal, the recorded electric power of the fan motors 14 and 24 can be predetermined by the pulse width.
  • the logic circuit 56 can be predetermined via an input line 58 sizes, due to which a determination of the parameters for determining the pulse width modulated signal to control the electronic switch 44 is performed.
  • the output stage 42 with the electronic switch 44th and the freewheeling diode 46 disposed on a circuit board 60 which is insertable into the first housing 12 of the first fan 10, wherein the circuit board 60 carries not only the output stage 42, but simultaneously the drive unit 54 and the logic circuit 56, so that the entire control unit 40 is disposed in the first housing 12 of the first fan 10.
  • the circuit board 60 is preferably arranged in the housing 12 for space-saving accommodation of the components of the control unit 40 so that it extends in a plane 61 which extends transversely to a rotational axis of the first fan motor 14.
  • power supply lines 62 and 64 for a commutator 66 of the first fan motor 14 shown in FIG. 5 are also provided on the circuit board 60.
  • a plug connection 68 via which a connection with both the supply terminal 48 and the ground terminal 50 and a connection of the power amplifier 42 to the second fan motor 24, to which the feed line 24a and the ground line 24b lead takes place, so that no electronic assembly is provided in the second housing 22 of the second fan 20.
  • a cooling body 70 is provided, with which, in particular, the electronic switch 44 and the freewheeling diode 46 are thermally coupled.
  • a thermal coupling to the power supply lines 62 and 64 and the heat sink 70 is also provided.
  • each of the power supply lines 62, 64 is provided with a carbon brush holder 62a, 64a fixedly mounted on the circuit board 60 and a carbon brush 62b, 64b movably disposed in the respective carbon brush holder 62a, 64a, which contact the commutator.
  • the heat sink 70 in turn comprises, for example, a cooling fin body 72, which is preferably designed so that it can be cooled by an air opening 74 flowing through an air opening 74 in the first housing 12 air stream 76, wherein the air flow 76 flows through the cooling fin body 72 and preferably also a stator 78 and a rotor 80 of the first fan motor 14 flows through for cooling the same.
  • a cooling fin body 72 which is preferably designed so that it can be cooled by an air opening 74 flowing through an air opening 74 in the first housing 12 air stream 76, wherein the air flow 76 flows through the cooling fin body 72 and preferably also a stator 78 and a rotor 80 of the first fan motor 14 flows through for cooling the same.
  • the air flow 76 first flows through the cooling fin body 72, then enters into a rear region of the fan motor 14, flows through the latter and exits from a front region 84 of the first fan motor 14 again.
  • the air flow reaches a 76 the front side region 84 of the first fan motor 14 with a bottom 86 cross fan cup 88, the bottom 86 deflects the air stream 76 and fins 90 of the fan cup 88 feeds the air flow 76 in the radial direction to a rotational axis 92 of the To accelerate rotor 80 and leave on a side facing away from the bottom 86 of the fan pot 88 radially outside the first housing 12.
  • the fan cup 88 thus acts by generating a negative pressure in the fan chamber 88 due to its fins 90 as the air flow 76 compelling motor fan, which is a portion of the first fan 16, wherein the latter, in particular with wings 94 arranged outside the fan pot 88, accelerates the air which is to pass through the first fan opening 32 of the carrier 30.
  • the forced through the fan chamber 88 air flow 76 thus not only serves to cool the fan motor 14 defined manner in a known manner, but at the same time to cool the cooling body 70 via the cooling fin body 72, in turn, the electronic switch 44 and the freewheeling diode 46th cool, which are the most heat generating power components of the power amplifier 42.
  • the heat sink 70 is preferably still provided with a bracket 96 which extends from the plug-in connection 68 opposite arranged cooling fin body 72 to the plug connection 68 and holding webs 98 for support on the circuit board 60 has.
  • the fin body 72 and the bracket 96 are a total integral part to which the circuit board 60 is fixed.
  • control unit 14 can be inserted into the first housing such that the cooling fin body 72 lies with outer ends 102 of its cooling fins 100 in the air opening 74 of the first housing 12.
  • control unit 40 is still covered by a housing cover 104, which closes the entire first housing 12 in the region of an end facing away from the first fan 16 and thus also engages over the circuit board 60 of the control unit 40.
  • a wiring harness 106 which has a connector 108 which is connectable to the preferably over the housing 68 projecting plug connector 68, a terminal connector 110 which, with the On-board electrical system of the motor vehicle is connectable, and has a connector 112, with which an electrical connection to the fan motor 24 of the fan 20 can be produced.
  • the wiring harness 106 in this case comprises a connection line 114 extending from the plug connector 108 to the plug connector 112, which, as shown in FIG. 2, comprises the feed line 24a and the ground line 24b extending from the output stage 42 to the second fan motor 24 of the second fan 20.
  • the wiring harness 106 includes a supply line 116 which extends from the terminal connector 110 to the connector 108 and, as shown in Fig. 2, leading from a first supply terminal 49 to the feed terminal 48 feed line 48a, one of a second supply terminal 51 to the ground terminal 50 leading Ground line 50a and one of an external terminal 59 to an input terminal 58 leading input line 58a, wherein the supply terminals 49 and 51 and the external terminal 59 are provided in the connector 110 and can be connected to the connector provided for the fan system.
  • control unit 40 is provided with a first output stage 42a for the first fan motor 14 and a second output stage 42b for the second fan motor 24, each of the output stages an electronic switch 44a and 44b and a freewheeling diode 46a and 46b, which operates in the same manner as described in connection with the first embodiment.
  • the electronic switches 44a and 44b can be actuated by the common control unit 54 'via the control lines 52a and 52b, each with a pulse-width-modulated signal.
  • the entire control unit 40 'in the first housing 12 of the first fan 10 is arranged.
  • the heat sink 70 'on preferably on opposite sides of the circuit board 60 is provided with a respective cooling fin body 72a and 72b, each fin body 72a, b of an output stage, namely the output stage 42a and 42b, is assigned and in particular for cooling of the respective electronic switch 44a or 44b and the corresponding freewheeling diode 46a and 46b, respectively.
  • circuit board 60 and the drive unit 54 and the logic circuit 56 and the power supply lines 62 and 64 are arranged for the first fan motor 14.
  • the entire control unit 40 can now be inserted into the first housing 12 such that the cooling fin bodies 72a, b are each assigned to air openings 74a, b and can be cooled by the air flow 76a or 76b passing through them, which can be cooled, for example, by the corresponding air openings 74a or 76b.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Motor Or Generator Cooling System (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)
  • Motor Or Generator Frames (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Claims (21)

  1. Dispositif de ventilation pour un système de refroidissement d'un véhicule automobile équipé d'au moins deux ventilateurs comprenant respectivement un moteur de ventilation électrique placé dans un boîtier séparé et une roue de ventilation pouvant être entraînée par ce moteur et équipé d'une unité de réglage permettant de commander les moteurs de ventilation, caractérisé en ce que l'unité de réglage (40) est placée dans le boîtier (12) de l'un des ventilateurs (10) et commande aussi bien le moteur de ventilation (14) placé dans le boîtier (12) que le moteur de ventilation (24) de l'autre ventilateur (20).
  2. Dispositif de ventilation selon la revendication 1 caractérisé en ce que le dispositif de ventilation comprend un faisceau de câbles (106) qui peut être relié aux deux ventilateurs (10, 20) et présente une fiche de raccordement de connexion (110) équipée d'un raccord d'alimentation (49, 51) et d'un raccord externe (59).
  3. Dispositif de ventilation selon la revendication 2, caractérisé en ce que le faisceau de câbles (106) peut être relié, via une fiche de raccordement (108, 112), à chacun des ventilateurs (10, 20).
  4. Dispositif de ventilation selon la revendication 2 ou 3, caractérisé en ce que le faisceau de câbles (106) présente un câble de connexion (114) passant entre les ventilateurs (10, 20) avec une ligne d'alimentation (24a).
  5. Dispositif de ventilation selon la revendication 4, caractérisé en ce que le câble de connexion (114) présente un câble de mise à la terre (24b).
  6. Dispositif de ventilation selon l'une quelconque des revendications 2 à 5, caractérisé en ce que le faisceau de câbles présente un câble d'alimentation (116), allant du ventilateur (10) équipé de l'unité de réglage (40) à la fiche de raccordement de connexion (110), avec une ligne d'alimentation (48a) et un câble d'entrée (58a) .
  7. Dispositif de ventilation selon la revendication 6, caractérisé en ce que le câble d'alimentation (116) présente un câble de mise à la terre (50a).
  8. Dispositif de ventilation selon la revendication 6 ou 7, caractérisé en ce que le câble d'alimentation (116) et le câble de raccordement (114) forment un faisceau de câbles (106) accrochés ensemble.
  9. Dispositif de ventilation selon l'une quelconque des revendications précédentes, caractérisé en ce que l'unité de réglage (40) comprend un étage final (42) commun permettant de commander tous les moteurs de ventilation (14, 24).
  10. Dispositif de ventilation selon l'une quelconque des revendications 1 à 8, caractérisé en ce que l'unité de réglage (40') comprend un étage final propre (42a, 42b) permettant de commander chacun des moteurs de ventilation (14, 24).
  11. Dispositif de ventilation selon l'une quelconque des revendications précédentes, caractérisé en ce que l'unité de réglage (40) est thermiquement couplée à un corps de refroidissement (70).
  12. Dispositif de ventilation selon la revendication 11, caractérisé en ce que l'étage final (42) est thermiquement couplé à un corps de refroidissement (70).
  13. Dispositif de ventilation selon la revendication 11 ou 12, caractérisé en ce que le corps de refroidissement (70) est refroidi à l'air.
  14. Dispositif de ventilation selon la revendication 13, caractérisé en ce que le corps de refroidissement (70) présente au moins un corps d'ailette (72).
  15. Dispositif de ventilation selon la revendication 14, caractérisé en ce que chacun des étages finaux (42a, b) est couplé à un corps d'ailette (72a, b) propre.
  16. Dispositif de ventilation selon l'une quelconque des revendications précédentes, caractérisé en ce que le boîtier (12) du ventilateur (10) équipé de l'unité de réglage (40) est traversé par un courant d'air (76) pouvant être produit par la roue de ventilation (16) et en ce que le corps de refroidissement (70) est ventilé par le courant d'air (76).
  17. Dispositif de ventilation selon la revendication 16, caractérisé en ce que le corps de refroidissement (70) est placé dans la zone d'une ouverture de ventilation (74) du boîtier (12), ouverture par laquelle le courant d'air (76) entre.
  18. Dispositif de ventilation selon l'une quelconque des revendications précédentes, caractérisé en ce que l'unité de réglage (40) présente une carte à circuits imprimés (60) qui s'étend sur un plan (61) orthogonal à l'axe de rotation (92) du moteur de ventilation (14).
  19. Dispositif de ventilation selon la revendication 18, caractérisé en ce que la carte de circuits imprimés (60) contient des arrivées de courant (62, 64) pour un commutateur (66) du moteur de ventilation (14).
  20. Dispositif de ventilation selon la revendication 19, caractérisé en ce que les arrivées de courant (62, 64) présentent des supports de balai en carbone (62a, 64a) placés sur la carte à circuits imprimés (60) et des balais en carbone (62b, 64b) pouvant se déplacer par rapport à ces supports.
  21. Dispositif de ventilation selon la revendication 19 ou 20, caractérisé en ce que les arrivées de courant (62, 64) sont thermiquement couplées au corps de refroidissement (70).
EP01980292A 2000-10-17 2001-08-29 Installation de ventilation Expired - Lifetime EP1327079B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10052331A DE10052331A1 (de) 2000-10-17 2000-10-17 Lüfteranlage
DE10052331 2000-10-17
PCT/EP2001/009918 WO2002033264A1 (fr) 2000-10-17 2001-08-29 Installation de ventilation

Publications (2)

Publication Number Publication Date
EP1327079A1 EP1327079A1 (fr) 2003-07-16
EP1327079B1 true EP1327079B1 (fr) 2007-10-17

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ID=7660635

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01980292A Expired - Lifetime EP1327079B1 (fr) 2000-10-17 2001-08-29 Installation de ventilation

Country Status (8)

Country Link
US (1) US6840743B2 (fr)
EP (1) EP1327079B1 (fr)
JP (1) JP2004511726A (fr)
AT (1) ATE376124T1 (fr)
DE (2) DE10052331A1 (fr)
ES (1) ES2292631T3 (fr)
HU (1) HU223321B1 (fr)
WO (1) WO2002033264A1 (fr)

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US6840743B2 (en) 2005-01-11
WO2002033264A1 (fr) 2002-04-25
JP2004511726A (ja) 2004-04-15
DE50113156D1 (de) 2007-11-29
DE10052331A1 (de) 2002-05-02
US20020195069A1 (en) 2002-12-26
HUP0204021A2 (en) 2003-04-28
ATE376124T1 (de) 2007-11-15
HU223321B1 (hu) 2004-06-28
ES2292631T3 (es) 2008-03-16
EP1327079A1 (fr) 2003-07-16

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