EP2426334B1 - Agencement de refroidissement pour véhicule agricole - Google Patents

Agencement de refroidissement pour véhicule agricole Download PDF

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Publication number
EP2426334B1
EP2426334B1 EP10174863.0A EP10174863A EP2426334B1 EP 2426334 B1 EP2426334 B1 EP 2426334B1 EP 10174863 A EP10174863 A EP 10174863A EP 2426334 B1 EP2426334 B1 EP 2426334B1
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EP
European Patent Office
Prior art keywords
fan
heat exchanger
agricultural vehicle
heat exchangers
vehicle according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP10174863.0A
Other languages
German (de)
English (en)
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EP2426334A1 (fr
Inventor
Aurelie Dubois
Froncois Carimantran
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.)
Claas Tractors SAS
Original Assignee
Claas Tractors SAS
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.)
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Publication date
Application filed by Claas Tractors SAS filed Critical Claas Tractors SAS
Priority to EP10174863.0A priority Critical patent/EP2426334B1/fr
Priority to RU2011134930/11A priority patent/RU2504486C2/ru
Publication of EP2426334A1 publication Critical patent/EP2426334A1/fr
Application granted granted Critical
Publication of EP2426334B1 publication Critical patent/EP2426334B1/fr
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Classifications

    • 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
    • F01P3/00—Liquid cooling
    • F01P3/18—Arrangements or mounting of 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
    • F01P3/00—Liquid cooling
    • F01P3/18—Arrangements or mounting of liquid-to-air heat-exchangers
    • F01P2003/187—Arrangements or mounting of liquid-to-air heat-exchangers arranged in series

Definitions

  • the invention relates to a cooling arrangement for an agricultural vehicle according to the preamble of claim 1.
  • Agricultural vehicles are mostly equipped with a system for the cooling of one or more working assemblies. If an internal combustion engine serves as the main drive of the vehicle, the cooling system is used for example in order to cool a cooling medium flowing through the engine block and to thereby dissipate heat from the engine block. High power requirements of engines existing today make such a cooling system practically indispensable.
  • a cooling system comprises as an important component a cooling arrangement which mostly consists of a heat exchanger and a fan as essential components. These are arranged with respect to each other such that the fan directs an air flow past an exchange surface of the heat exchanger or through an exchange surface (permeable in this case) of the heat exchanger, in order to cause an heat exchange between the air flow and the heat exchanger.
  • the exchange surface of the heat exchanger As the exchange surface of the heat exchanger is heated by a cooling medium flowing through the heat exchanger, which has previously been heated by any working assembly of the vehicle, the exchange surface largely emits this heat to the air flow produced by the fan - and hence to the environment. In this way, a cooling of a working assembly of the vehicle is achieved.
  • cooling capacities increase furthermore because, related to increased engine outputs and/or to higher comfort of the vehicles, further working assemblies (e.g. air-conditioning units, auxiliary devices etc.) of the vehicles and operating resources and/or auxiliary resources (fuel, charge air, lubricant, hydraulic oil etc.) of the vehicles are cooled.
  • further working assemblies e.g. air-conditioning units, auxiliary devices etc.
  • auxiliary resources fuel, charge air, lubricant, hydraulic oil etc.
  • a cooling arrangement in which a fan directs a cooling air flow to at least two heat exchangers.
  • the heat exchangers serve for the separate cooling of their own medium each, wherein for example one of the heat exchangers cools the internal combustion engine and another heat exchanger cools a working medium of an additional assembly.
  • the heat exchangers are arranged in one plane adjacent to each other upstream of an axial fan. Furthermore, it is proposed to arrange a further heat exchanger upstream of the heat exchangers which are lying adjacent to each other.
  • a radial fan is used to eliminate these disadvantages.
  • This radial fan operates with a higher compressing of the drawn-in air (than an axial fan), so that a higher cooling capacity can be achieved on a relatively small structural space. Owing to the reduced volume flow due to the higher compression, and owing to a freer flow path, the radial fan causes less flow noises.
  • Such an arrangement is shown in the document US 6,401,801B1 .
  • Another reason for lower noises at a high overall output of the cooling arrangement lies in the arrangement of exchangers in relation to the fan.
  • the heat exchangers can be exposed to air flows of different speed and/or compression.
  • the air stream can be distinctly slower than in the downstream outlet region.
  • one heat exchanger could advantageously be used arranged upstream of the radial fan, which heat exchanger is able to be operated with a slow air stream. The reverse could apply for another heat exchanger arranged downstream of the radial fan.
  • the heat exchanger arranged upstream of the fan is associated with a first group comprising at least one further heat exchanger arranged upstream of the fan. Accordingly, several heat exchangers are situated upstream of the fan, in relation to the air flow.
  • the heat exchanger arranged downstream of the fan is associated with a second group comprising at least one further heat exchanger arranged downstream of the fan. Accordingly, several heat exchangers are situated downstream of the fan, in relation to the air flow.
  • heat exchangers In general, by arrangement of several heat exchangers before or after the fan, advantageous installation places can be used to cover different requirements, for example with regard to the required cooling capacity or to structural space aspects. Different arrangements of heat exchangers are conceivable in detail here. For instance, several heat exchangers associated with one group can be arranged adjacent to each other in relation the direction of the air flow. In this case, the air flow is divided to the heat exchangers.
  • One advantage of such arrangement is that impinging air is not already heated by the heat exchanger lying adjacent thereto.
  • a heat exchanger associated with the first group has a different medium flowing through than a heat exchanger associated with the second group. Accordingly, the heat exchangers of the two groups serve different cooling purposes.
  • the heat exchangers can serve in principle for the cooling of any medium.
  • a medium flows through at least one of the heat exchangers, the medium being an operating and/or auxiliary resource for the vehicle.
  • the medium can be for instance fuel, charge air for an internal combustion engine of the vehicle, cooling water for an engine, air-conditioning unit coolant, hydraulic oil, gear oil etc..
  • different heat exchangers of the cooling arrangement have different ones of the previously mentioned media flowing through.
  • the heat exchangers can be arranged and aligned in different ways in relation to the vehicle.
  • a surface of a heat exchanger with air flowing through, arranged upstream of the fan extends approximately transversely to the longitudinal axis of the vehicle.
  • a particularly favourable arrangement makes provision that the air flow leaves an heat exchanger arranged downstream of the fan in upwards direction.
  • the fan comprises an impeller, the rotation axis of which is aligned approximately parallel to the longitudinal axis of the vehicle.
  • the drive assembly of the fan can be arranged in this case advantageously in front of or behind the fan (in relation to the longitudinal direction of the vehicle), whereby the cooling arrangement can be integrated in a space-saving manner for example into the elongated bonnet of a tractor.
  • the fan expediently has a housing accommodating an impeller which is able to be brought into rotation.
  • the upstream or downstream heat exchangers are advantageously able to be mounted onto the housing respectively, so that a closed flow path is produced.
  • the housing advantageously surrounds the impeller circumferentially, with a radial air outlet being provided on a circumferential region of the housing.
  • the housing advantageously has an axial air inlet.
  • the cooling arrangement according to the invention can be used for different agricultural vehicles.
  • the cooling arrangement can also be used in other agricultural vehicles, such as self-propelled harvesting machines (forage harvesters, combine harvesters etc.).
  • Fig. 1 shows a fan 2 of a cooling arrangement according to the invention.
  • the fan 2 is embodied as a radial fan. It has a helical housing 4, in which an impeller 5 is rotatably mounted about a rotational axis 3.
  • the impeller 5 is driven by a drive assembly (not illustrated) and rotates in operation about rotational axis 3.
  • the impeller 5 is a radial ventilator which in operation draws in air in axial direction (parallel to rotational axis 3), which is indicated by the three arrows. By rotation, the impeller 5 deflects the drawn-in air through 90°and blows it out in radial direction.
  • Fig. 1 eight blades are indicated on the impeller 5 for this purpose. The number of blades can differ as desired.
  • the blades can be configured in a manner previously known per se with regard to shape and arrangement.
  • the impeller 5 can be a radial ventilator drawing in air (axially) either on one side or on both sides.
  • a radial ventilator drawing in on one side is used, because with this, the flow path of the air is not impaired by a drive assembly.
  • the housing 4 of the fan 2 has an air outlet 6 on a circumferential region lying on the left in Fig. 1 .
  • the air emerging radially from the impeller 5 flows, as indicated by the two wide arrows, out from the housing 4 through the air outlet 6.
  • Fig. 2 shows a cooling arrangement 1 according to the invention, which has a fan 2, which may correspond in construction to the fan 2 described in Fig. 1 .
  • the cooling arrangement 1 comprises, alongside the fan 2, four heat exchangers 11, 12, 21, 22. These serve for the cooling of different cooling media of an agricultural vehicle (not shown), for example a tractor, into which the cooling arrangement 1 can be incorporated.
  • the heat exchangers 11, 12, 21, 22 are preferably integrated into different cooling circuits, in order for example to cool fuel, charge air for an internal combustion engine of the vehicle, cooling water for an engine, air-conditioning unit coolant, hydraulic oil, gear oil or suchlike. It is conceivable to add further heat exchangers to the arrangement.
  • At least one of the heat exchangers 11, 12 is arranged upstream of the fan 2 in relation to the air flow direction indicated by the arrows, and at least one of the heat exchangers 21, 22 is arranged downstream of the fan 2 in relation to the air flow direction indicated by the arrows.
  • the upstream heat exchangers 11, 12 are associated for this with a first group 10, whereas the downstream heat exchangers 21, 22 are associated with a second group 20.
  • the heat exchangers of the first group 10 preferably serve for the cooling of cooling water, air-conditioning coolant, fuel.
  • the heat exchangers of the second group 20 preferably serve for the cooling of engine charge air, gear oil.
  • rotational axis 3 is aligned approximately parallel to a longitudinal axis of the vehicle, on which the cooling arrangement comes into use.
  • the drawing-in direction of the air entering into the fan 2 corresponds to the direction of the head wind of the vehicle, for which the first group 10 is arranged in front of the fan 2 in the direction of travel of the vehicle.
  • the air outlet 6 of the fan 2 is arranged above rotational axis 3 of the fan 2 and opens upwards. Air emerging from the fan 2 therefore streams out, as indicated by the upwardly directed arrow, upwards through the heat exchangers of the second group 20.
  • Heat exchangers 11, 12, 21, 22 can be basically configured or arranged differently. In particular - deviating from the diagrammatic illustration in Fig. 2 - these can be provided such that the air flow does not flow through these, but rather flows past them. For this, they can also be aligned parallel to the air flow.
  • the heat exchangers 11, 12, 21, 22 are preferably embodied according to Fig. 2 , according to which these comprise a surface through which the air flows. Accordingly the heat exchange takes place within the heat exchangers, where a faster heat transmission is possible.
  • the surfaces of the heat exchangers 11, 12 preferably extend approximately transversely to the longitudinal axis of the vehicle, which is approximately parallel to the rotation axis 3.
  • the surfaces of the heat exchangers 21, 22 preferably extend approximately parallel to the longitudinal axis of the vehicle.
  • cooling arrangement 1 high cooling capacities with a relative low noise production can be achieved with the cooling arrangement 1.
  • turbulences of the air flow can be reduced.
  • relatively low air flow speeds prevail, these can be relatively high in the outlet region.
  • This can be utilized advantageously by usage of heat exchangers which are adapted with regard to area and/or with regard to output. In this way, it is also possible to optimize the air flow path with respect to fluid mechanics.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Air-Conditioning For Vehicles (AREA)

Claims (11)

  1. Véhicule agricole comprenant un agencement de refroidissement (1), constitué d'au moins deux échangeurs de chaleur (11, 12, 21, 22) et d'un ventilateur (2) dirigeant un flux d'air vers les au moins deux échangeurs de chaleur (11, 12, 21, 22), caractérisé en ce que le ventilateur (2) est un ventilateur radial en amont duquel, par rapport au flux d'air, est disposé au moins un échangeur de chaleur (11, 12) et en aval duquel, par rapport au flux d'air, est disposé au moins un échangeur de chaleur (21, 22), dans lequel l'échangeur de chaleur (11, 12) disposé en amont du ventilateur (2) est associé à un premier groupe (10) comprenant au moins un autre échangeur de chaleur (11, 12) disposé en amont du ventilateur (2).
  2. Véhicule agricole selon la revendication 1, caractérisé en ce que l'échangeur de chaleur (21, 22) disposé en aval du ventilateur (2) est associé à un second groupe (20) comprenant au moins un autre échangeur de chaleur (21, 22) disposé en aval du ventilateur (2).
  3. Véhicule agricole selon la revendication 1 ou 2, caractérisé en ce que plusieurs échangeurs de chaleur (11, 12, 21, 22) associés à un même groupe (10, 20) sont disposés l'un après l'autre dans la direction du flux d'air.
  4. Véhicule agricole selon une des revendications précédentes, caractérisé en ce qu'un échangeur de chaleur (11, 12) associé au premier groupe (10) est traversé par un médium différent d'un échangeur de chaleur (21, 22) associé au second groupe (20).
  5. Véhicule agricole selon une des revendications précédentes, caractérisé en ce qu'un médium traverse au moins un des échangeurs de chaleur (11, 12, 21, 22), le médium étant un moyen d'exploitation et/ou un moyen auxiliaire pour le véhicule.
  6. Véhicule agricole selon une des revendications précédentes, caractérisé en ce qu'une surface, traversée par de l'air, d'un échangeur de chaleur (11, 12) disposé en amont du ventilateur (2) s'étend approximativement transversalement à l'axe longitudinal du véhicule.
  7. Véhicule agricole selon une des revendications précédentes, caractérisé en ce que la surface, traversée par de l'air, d'un échangeur de chaleur (21, 22) disposé en aval du ventilateur (2) s'étend approximativement parallèlement à l'axe longitudinal du véhicule.
  8. Véhicule agricole selon une des revendications précédentes, caractérisé en ce que le flux d'air quitte un échangeur de chaleur (21, 22) disposé en aval du ventilateur (2) dans la direction ascendante.
  9. Véhicule agricole selon une des revendications précédentes, caractérisé en ce que le ventilateur (2) comprend une roue à ailettes (5) dont l'axe de rotation (3) est aligné approximativement parallèlement à l'axe longitudinal du véhicule.
  10. Véhicule agricole selon une des revendications précédentes, caractérisé en ce que le ventilateur (2) possède un carter (4) logeant une roue à ailettes (5) qui est apte à être mise en rotation.
  11. Véhicule agricole selon la revendication 10, caractérisé en ce que le carter (4) entoure la roue à ailettes (5) circonférentiellement, une sortie d'air radiale (6) étant ménagée dans une région circonférentielle du carter (4).
EP10174863.0A 2010-09-01 2010-09-01 Agencement de refroidissement pour véhicule agricole Active EP2426334B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP10174863.0A EP2426334B1 (fr) 2010-09-01 2010-09-01 Agencement de refroidissement pour véhicule agricole
RU2011134930/11A RU2504486C2 (ru) 2010-09-01 2011-08-22 Система охлаждения для сельскохозяйственного транспортного средства

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP10174863.0A EP2426334B1 (fr) 2010-09-01 2010-09-01 Agencement de refroidissement pour véhicule agricole

Publications (2)

Publication Number Publication Date
EP2426334A1 EP2426334A1 (fr) 2012-03-07
EP2426334B1 true EP2426334B1 (fr) 2017-10-25

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EP10174863.0A Active EP2426334B1 (fr) 2010-09-01 2010-09-01 Agencement de refroidissement pour véhicule agricole

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EP (1) EP2426334B1 (fr)
RU (1) RU2504486C2 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018219006A1 (de) * 2018-11-07 2020-05-07 Brose Fahrzeugteile SE & Co. Kommanditgesellschaft, Würzburg Lüfteranordnung für ein Kraftfahrzeug
AT522171B1 (de) * 2019-05-28 2020-09-15 Dipl Ing Thomas Euler Rolle Kühler

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1726290A1 (ru) * 1989-07-26 1992-04-15 Научно-производственное объединение по сельскохозяйственному машиностроению Кабина трактора
DE4009726A1 (de) 1990-03-27 1991-10-02 Kloeckner Humboldt Deutz Ag Waermetauscher-lueftersystem
US6401801B1 (en) * 1999-12-10 2002-06-11 Caterpillar Inc. Twin fan cooling system
JP2001348909A (ja) * 2000-06-02 2001-12-21 Shin Caterpillar Mitsubishi Ltd 建設機械
DE10120483A1 (de) * 2001-04-25 2002-10-31 Modine Mfg Co Anordnung zur Kühlung

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
RU2504486C2 (ru) 2014-01-20
RU2011134930A (ru) 2013-02-27
EP2426334A1 (fr) 2012-03-07

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