• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The present invention relates to a fan arrangement for a cooling module in a vehicle. The vehicle (6) comprises a radiator fan (10) providing an air flow through a flow passage (5) and the cooling module in an intended flow direction. The cooling module comprises a radiator (3) and at least one further cooler (1, 2) arranged in an upstream position of the radiator (3) with respect to said intended flow direction through the flow passage (5). The fan arrangement comprises at least one additional electrically driven fan (4). The additional electrically driven fan (4) is arranged in the flow passage (5) in a position downstream of the radiator (3) and upstream of the radiator fan (10) with respect to said intended flow direction through the flow passage (5). The electrically driven fan (4) is configured to provide an air flow through a restricted portion (18) of the flow passage (5) and the cooling module during certain occasions when the operating conditions the radiator fan is not in operation.(Fig1)
    公开号:SE1650042A1
    申请号:SE1650042
    申请日:2016-01-15
    公开日:2017-07-16
    发明作者:Kardos Zoltan；Hall Ola
    申请人:Scania Cv Ab；
    IPC主号:
    专利说明:

    A fan arrangement in a vehicle BACKGROUND OF THE INVENTION AND PRIOR ART The present ínvention reiates to a fan arrangement in a vehicle according to the preambie of ciaim i.
    An AC system is commonly used to cool the cab space in a vehicle. AC systemscomprise a cooling Circuit With a circulating refrigerant. The circuiatin g refiigerantcools the air in the cab space when it vaporizes in an evaporator and gives off heat tosurrounding air When it condenses in a condenser. The condenser is usually situated atthe front portion of the vehicle near to the radiator in Which the coolant in the engine'scooling system is cooied. During operation, air is drawn through the condenser and theradiator by a radiator fan driven hy the engine. The engine aiso drives a compressor Which compresses and circuiates the refrigerant in the AC system.
    It is often desired to use the AC system in the vehicle even at times When the engine isnot running. A known practice in this respect is to run the cornpressor on electricalenergy and use an eiectrically driven fan to force a cooiing air flow through thecondenser. However, there is usually no space for an electiicaliy driven fan in aposition close to the ordinary condenser. AC systems are known to be equipped withan additional condenser and an electricaiiy driven fan located at a distance from theordinary condenser for operation of the AC system when the engine is not running.The existence of two condensers increases the number of components of the AC system at the same time as it conipiicates the operation of the AC system.
    The amount of air Which can he supplied to a supercharged combustion enginedepends on the pressure of the air but also on the temperature of the air. Therefore, thecharged air is cooied in a charged air cooier before it is enters the coinbustion engine.The charged air cooler may be arranged at a front portion of a vehicle where it iscooled hy ambient air. When arnbient air has a iow temperature, the charged air can becooled to a temperature below the dew point temperature of the air. In this case, liquidWater is formed in the charge air cooler. When ainbient air temperature is below 0°C, there is also risk that the liquid Water freezes to ice in the charge air cooier. Such ice '15 formation will cause a greater or lesser amount of obstruction of the airflow ductsWithin the charge air cooler, resulting in a reduced flow of air to the combustion engine and consequent operational rnaifunctions or stoppages.
    DE 10 2011 G06 350 A1 shows a fan arrangement for rnoving cooi air into an air paththrough a cooling rnodule. The fan arrangernent comprises a fan shroud including amain fan driven by an engine and a number of eiectrically driven fans arranged inparallel to the main fan. The eleetricaiiy driven fans provide cornplementary air pathsat the side of a main air path provided by the main fan. Such a positioning of theelectrically driven fans is space consurriing since it requires a Wider flow channel inorder to accomrnodate the electricaily driven fans.
    SUMMARY OF THE INVENTION The object of the present invention is to add at least one electrically driven fan to aradiator fan in a vehicle where the existence of the additional electrically driven fandoes not require any extra space in the vehicle.
    The above rnentioned object is achieved by the fan arrangement according to thecharacterizing part of clairn l. A cooling module in a vehicle may cornprise a radiatorand at least one other cooler defined as further cooler. During certain occasions, it isdesired to provide an air flow through the further cooler when the radiator fan is not inoperation. However, it is a problem to find a suitable rnounting position for such anadditional fan. The area in front of the further cooler is usually occupied by a grille.The area behind the further cooler is usually occupied by the radiator or another cooler.However, there is usually an empty space between the radiator and the radiator faninside the fan shroud Where it is possible to arrange an additional electrically drivenfan. In this case, the additional electrically driven fan is not positioned adjacent to thefiirther cooler but it is possibie to provide an air flow through the radiator and thefurther cooler by the additional fan. The fan and the electrical engine may be mounted as a unit in this empty space.
    According to an enibodiment of the invention, the electrically driven fan is arranged inthe ñow passage in a position closer to the radiator than to the radiator fan. Apositioning of the additional electricaily driven fan adjacent to the radíator makes it easier to provide a relatively eoneentrated air flow through the radiator and the further '15 cooler on the opposite side of the radiator. The additional electrically driven fan maybe arranged in a part of the flow passage defined by a fan cover of the radiator fan. Aradiator fan is usually provided with a fan cover in order to provide an efficient airflow through the radiator fan. Such a fan cover provides an empty space in front of theradiator fan Where it is possible to arrange one or several additional electrically driven fans.
    According to an embodirnent of the invention, the fan arrangement cornprises at leastone component configured to provide an air channel defming said restricted portion ofthe flow passage. lt is desired to use a relatively small additional fan which does notrequire a large supply of electrical energy. As a consequence, the additionalelectrically driven fan is not able to provide an air flow through the entire flow passageand through the entire cooling module. By means of an air channel within flowpassage, it is possible to provide a concentrated air flow through a relevant part of thefurther cooler by means of a relatively small additional fan. The air channel may bedefined by an annular element arranged in a space between the further cooler and theradiator. ln this case, it is possible to provide a substantially leak free air flow betweenthe further cooler and the additional fan via the radiator. The annular eiernent may bemanufactured of a suitable plastic material. Preferabiy, the annular element isattachable to the further cooler and the radiator. The annular elements may be providedwith projecting fastening portions which are attachable in the flow channels of the cooler/radiator.
    According to an embodirnent of the invention, the Cooling module may comprise twofurther coolers. The further coolers may be a conclenser of an AC system, a charged aircooler, an EGR cooler, oil cooler etc. The air channel may be defined by an annularelement arranged in a space between the two further coolers. Also in this case, theannular element may include fastening portion for attachment to the respective cooler.ln this case, it is possible to provide a substantially leak free air flow by the additionalfan between the two further coolers. The air channel rnay be defined by a fan cover ofthe additional electrically driven fan. Such a fan cover may define a substantially leakfree part of the air channel between the radiator and the additional electrically driven fan.
    According to an embodirnent of the invention, the further cooler is a condenser of an AC system and that the electrically driven fan is confignred to provide an air flow '15 through the restricted portion of the flow passage and the condenser of the AC systemduring occasions When the AC system is in operation and the cornbustion engine is notrunning. In this case, it is possibie to use the AC system when the engine is notrunning. The additional electricai driven fan and the Compressor of the AC system are driven by electric energy from a battery in the vehicle.
    According to an embodirnent of the invention, the additional eïectrically driven fan isable to provide an air flow through the restricted portion of the flow passage in anopposite direction to the intended flow direction through the flow passage. Such anadditional eiectricaily driven fan may be reversible in its direction of rotation such that it is also able to provide an air flow in the intended flow direction of the flow passage.
    According to an ernbodirnent of the invention, the further cooler rnay be a charge aircooler cooling charge air delivered to the coinbustion engine, wherein the additionalelectrically driven fan is configured to provide an air flow through the restrictedportion of the flow passage and the charge air cooler in the opposite direction to theintended flow direction through the flow passage during occasion When there is riskfor ice formation in the charge air cooler. ln this case, it is possible to direct relativelyWarm air from the engine room of the vehicle to the charged air cooler in order to rneltpossible ice forrnations in the charge air cooler.
    BRIEF DESCRIPTION OF THE DRAWING in the following a preferred ernbodiment of the invention is described, as an example, With reference to the attached drawings, in which: F ig. 1 shows a front view of a cooling module in a vehicle comprising a fanarrangement according the invention andFig. 2 shows a cross-sectional view of the cooling rnoduie in the piane A-A in Fig. 1.
    DETAILED DESCRIPTION OF A PREFERRED EMBODIMENT OF THEINVENTION Fig. l shows a front view of a Cooling module. The cooling module cornprises a condenser l of an AC systern in a front position. The condenser l receives a gaseous refrigerant via an inlet line la. The refrigerant is cooled in the condenser l by a Coolingair flow to a temperature at which it Condenses. The liquefied refrigerant leaves theCondenser l via an Outlet line lb. A charge air Cooler 2 is arranged in a position behindthe eondenser 1. The charge air Cooler 2 cotnprises an inlet tank 2a, a Cooling portionEb and an outlet tank 20. Charged air is delivered to the intet tank 2a via an inletConduit Zat. The chaiged air is cooled in the Cooling portion Zh by a Cooling air flow.The cooled charged air is received in the outlet tank 2c before it leaves the charge airCooler 2 via an outlet conduit 2c1. A radiator 3 is arranged in a position behind thecharge air Cooler 2. The radiator 3 cornprises an inlet tank 3a, a Cooling portion 3b andan outlet tank 3C. Coolant is received in the inlet tank 3a. The Coolant is delivered tothe Cooling portion Bh Where it is cooled hy a. Cooling air flow. The cooled Coolant isreceived in the ontlet tube lc before it leaves the radiator 3. Two additional fans 4 areindicated with dotted lines. The additional fans 4 are arranged behind the radiator 3.The additional fans 4 are operated by means of a respective electric engine 4a. Thefans 4 and the electric engine 4a are rnounted as a unit in a position close to theradiator 3. The fans 4 and the electrical engines 4a may be Inounted by means ofsuitable rnounting proiiles attached to the inlet tank 3a and the outlet tank 3c of theradiator 3.
    Fig.2 show a cross-sectional view in the plane A-A in Fig. 1. The Condenser i, theCharge air Cooler 2 and the radiator 3 is arranged in a flow passage 5 in a vehicle 6which rnay be a heavy vehicle. The flow passage 5 cornprises an opening Sa arrangedin a front portion of the vehicle 5. A front wall 7 of the vehicle and a bumper 8 definesthe opening Sa of the flow passage 5. A grille 9 is arranged in the opening 5a. Thegrille 9 is, in this Case, defined by a number of vertical bars having a parallel extensionacross the opening Sa of the air passage S. A radiator fan lt) is configured to provide aCooling air flow through the Cooling module in the flow passage 5. The radiator fan 10is driven by a cornhustion engine 11 via a clutch 12. A control unit 13 controls the engagement and the disengagenient of the clutch 12.
    The cornbustion engine ll is arranged in an engine room 14 of the vehicle 6. TheControl unit 13 receives substantially continuously infonnation from a temperature sensor lå about the temperature of Coolant which is cooied in the radiator 3 and Which .'30 cools the cornbustion engine l i. The control unit 13 starts the radiator fan 10 Whenthe coolant has a temperature above a predeterinined temperature. During operation,the radiator fan 10 provides an air flow in an intended flow direction through the flowpassage 5. The air flow constitutes of ambient air which it directed into the flowpassage 5, via the inlet opening Sa. In the flow passage 5, the air flows through thecondenser i, the charge air cooier 2 and the radiator 3. The air flow cools therefrigerant in the condenser i, the charge air in the charge air cooler 2 and the coolant in the radiator 3.
    The condenser l is arranged in the flow passage 5 in a position relatively close to theinlet opening Sa and the griiie 9. The charge air cooler 2 is arranged at a distancebehind the condenser l. A first annular element 16 is arranged in the space between thecondenser l and the charge air cooler 2. The first annular element 16 is attached on thecondenser l and/or the charge air cooler 2. The radiator 3 is arranged at a distancebehind the charge air cooler 2. A second annular element i is arranged in the spacebetween the charge air cooier 2 and the radiator 3. The second annuiar element 17 isattached on the charge air cooler 2 and/or the radiator. The first annuiar element 16and the second annular element 17 forms together With air flow passages through thecondenser i, air flow passages through the charge air cooier 2, air flow passagesthrough the radiator 3 and a fan cover 4b of the additional fan 4 an air channel 18 in arestricted portion of the flow passage 5. Each additional fan 4 is configured to providean air flow through such an air channel 18- The control unit 13 controls the activationof the electric engine 4a and the speed of the additional fan 4. The speed of theadditional electrically driven fans may be regulated in a stepiess manner. Theadditional fans 4 are reversible in its direction of rotation. Thus, it is possible toprovide an air flow through the air channel 18 in the intended flow direction throughthe flow passage 5 and in an opposite direction to the intended flow direction through the flow passage 5.
    The use of the additional fans 4 has several appiications. When a driver wishes to takea break a warrn day, it is possible to start the AC system when the cornbustion engine is not in operation. In this case, the driver can indicate start of the AC system by means '15 of a button 19 or the like. When this is indicated, the control unit 13 initiates supply ofelectrical energy from a battery or the like in the vehicle 6 to a Compressor of the ACsystem and to the electrical engines 4a powering the additional electrically driven fans4. The additional fans 4 start and they provide an air flow through the respective airchannel 18 in the intended flow direction through the air passage 5. Ambient air issucked into the flow passages 5, via the opening Sa, and through the air channels 18.The air flow through the air channels 18 provides a required cooling of the refrigerantin the condenser 1. The annular eïements 16, 17 and the fan cover 4b of the additionalfans 4, define a substantially tight air channel 18. By means of such air channels 18, itis possible to provide concentrated air flows through relevant parts of the condenser 1.Suhstantially the whole air flow provided by the respective additional fans 4 is directedthrough the condenser l. As a consequence, it is possible to use additional electricallydriven fans 4 with a relatively small capacity. It is usually an empty space in the flowpassage 5 in a position between the radiator 5 and the radiator fan lO which is definedby the radiator fan cover 10a. The additionally fans 4 and the electricai engines 4a arearrangcd in this space. Consequently, the additional fans 4 are arranged in adownstream position of the radiator 3 and in an upstreain position of the radiator fan 10 with respect to the intended flow direction through the flow passage 5.
    Another application of the additionaily fans 4, it is when the combustion engine isoperated and ambient air has a very low temperature. During such occasions, theradiator fan is usually not driven. Since the cornbustion engine is operated, charged airis directed to the charge air cooler 2. During such oceasions, the water vapor in thecharge air may be liquefied and frozen in the charge air cooler 2. lf it occurs, thesupply of charge air to the eornbustion engine il will be reduced and possibly ceased.In order to avoid this risk, the control unit 13 may receive information from atemperature sensor 20 about ambient temperature or the temperature of the charged airleaving the charge air cooler 2. ln case the received temperature indicates such a risk,the control unit 13 activates the additionaily fans 4 such that they provide an air flowin the flow channeis l8 in an opposite direction to the intended flow direction throughthe fiow passage 5. As a consequcnce, the additional fan 4 provide an air flow fromthe engine room 14 and through the air channels 18. The air flows in the air channels18 are directed through the radiator 3, the charged air cooler 2 and the condenser 1.The air inside the engine room 14 has usually a considerably higher temperature than ambient air since it is in contact with the combustion engine 11. Consequently, relatively hot air flows from the engine room 14 and through the charge air cooler 2 Where it melt possible ice forinations.
    Finally, it is possible to use the additionaliy fans 4 instead of the radiator fan 10 foroooling of the refrigerant in the condenser l during certain Operating conditions suchas city driving. In city traffic, the rain air flow through the condenser l is many timetoo low for cooling the refrigerant. in this case, it is possible to start the additional fans4 instead of the radiator fan 10 for Cooling the retrigerant in the condenser l. In casethe additional fans 4 are dirnensíoried for this purpose, it is usually more energyefficient to start them than to start the considerably larger radiator fan 10.
    The invention is not restricted to the described embodirnent but may be varied freelywithin the scope of the clairns. The Cooling module may, for example, cornprise a Variable number of coolers.
    权利要求:
    Claims (12)
    [1] 1. l. A fan arrangement for a cooling module arranged in a flow passage in a vehicle,wherein vehicle (6) eoniprises a radiator fan (10) driven by a cornbustion engine (ll)and configured to provide an air flow in an intended direction through the flow passage(S) and the eooling module, wherein the Cooling module comprises a radiator (3) of acooling system cooling a cornbustion engine (l l) and at least one further cooler (l, 2)arranged in an upstrearn position of the radiator (3) With respect to said intended floWdirection through the flow passage (5), wherein the fan arrangeinent cornprises at leastone additional electrically driven fan (4), characterized in that the additionalelectrically driven fan (4) is airanged in the flow passage (5) in a position downstreamof the radiator (3) and upstrearn of the radiator fan (EO) with respect to said intendedflow direction through the flow passage (5) and in that the electrically driven fan (4) iseonñgured to provide an air flow through a restricted portion (18) of the flow passage(5) and the cooling module during certain occasions when the radiator fan is not in operation.
    [2] 2. A fan arrangenient according to claiin l, characterized in that the additionalelectrically driven fan (4) is arranged in the flow passage (5) in a position closer to theradiator (3) than to the radiator fan (10).
    [3] 3. A fan arrangement according to clairn l or 2, characterized in that the electricallydriven fan (4) is arranged in a part of the fíow passage (5) defined by a fan cover (10a)of the radiator fan (lO).
    [4] 4. A fan arrangernent according to any one of the preceding claims, characterized inthat the fan arrangenient comprises at least one component configured to provide an air channel (18) defining said .restricted portion of the flow passage (5).
    [5] 5. A fan arrangement according to any one of the preceding claims, characterized inthat said air channel (I 8) within the flow passage (S) is defined by an annular element (I 7) arranged in a space between the fixrther Cooler (2) and the radiator (3).
    [6] 6. A fan arrangement according to any one of the preceding clairns, characterized in that the cooïing module eornprises at least two fiirther coolers (l, 2).
    [7] 7. A fan arrangernent according to ciaiin 4 and 6, characterized in that said air channel(18) within the flow passage (5) is defined hy an annuiar element (17) arranged in a space between said two coolers (i, 2).
    [8] 8. A fan arrangement according to clairn 4, characterized in that said air channel (18)Within the fiow passage (5) is defined by a fan cover (4b) of the electrically driven fan (4).
    [9] 9. A fan arrangernent according to any one of the preceding clairns, characterized inthat the further cooier is a condenser (i) of an AC system and that the electricallydriven fan (4) is configured to provide an air flow through the restricted portion (18) ofthe flow passage (5) and the condenser (1) of the AC systern during occasions when the AC system is in operation and the combustion engine (11) is not running.
    [10] 10. A fan arrangernent according to any one of the preceding claims, characterized inthat the electrically driven fan (4) is able to provide an air flow through the restrictedportion (18) in an opposite direction to the intended flow direction through the flow passage (S).
    [11] 11. A fan arrangement according to clairn 10, characterized in that the iíirther cooler isa charge air cooier (2) cooling charge air delivered to the cornbustion engine (i l),wherein the electricaily driven fan (4) is contigured to provide an air flow through therestricted portion (18) of the flow passage (5) and the charge air cooler (2) in theopposite direction to the intended flow direction through the flow passage (5) during occasion when there is risk for ice formation in the charge air cooier (2).
    [12] 12. A fan arrangernent according to any one of the preceding ciaiins, characterized in that the electricaíly driven fan (4) is reversibie in its direction of rotation.
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    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    JPS5910727A|1982-07-09|1984-01-20|Nissan Motor Co Ltd|Cooling device for engine|
    DE3702267A1|1987-01-27|1988-08-04|Bayerische Motoren Werke Ag|Arrangement of at least two air-liquid heat exchangers on motor vehicles|
    DE3820163A1|1988-06-14|1989-12-21|Kloeckner Humboldt Deutz Ag|Air-cooled internal combustion engine|
    DE4122512A1|1991-05-28|1992-12-03|Kloeckner Humboldt Deutz Ag|COMPACT HEAT EXCHANGER FAN UNIT|
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    US7669557B2|2006-02-08|2010-03-02|Toyota Jidosha Kabushiki Kaisha|Cooling device for vehicle|
    BRPI0710566A2|2006-04-28|2011-08-16|Scania Cv Ab|cooling fan arrangement on a vehicle|
    SE530032C2|2006-06-30|2008-02-12|Scania Cv Abp|Radiator for a motor vehicle|
    JP2008106727A|2006-10-27|2008-05-08|Honda Motor Co Ltd|Air suction device at front of vehicle|
    SE535564C2|2010-12-22|2012-09-25|Scania Cv Ab|Cooling system in a vehicle|
    DE102011006350A1|2011-03-29|2012-10-04|Behr Gmbh & Co. Kg|Ventilation device for cooling system of e.g. passenger car, has two fans for moving cool air into two different respective air paths through cooling module and arranged in through-holes of shroud, where electromotor drives one of fans|
    DE102013112825A1|2013-11-20|2015-05-21|Valeo Klimasysteme Gmbh|Front module of a vehicle|
    CN103644024B|2013-11-28|2016-05-04|长城汽车股份有限公司|A kind of car engine air admittance humidity control system|US10744855B2|2018-02-19|2020-08-18|Toyota Jidosha Kabushiki Kaisha|Cooling device for vehicle|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    SE1650042A|SE542203C2|2016-01-15|2016-01-15|A vehicle with a fan arrangement|SE1650042A| SE542203C2|2016-01-15|2016-01-15|A vehicle with a fan arrangement|
    PCT/SE2016/051254| WO2017123131A1|2016-01-15|2016-12-13|A fan arrangement in a vehicle|
    CN201680077440.4A| CN108474292A|2016-01-15|2016-12-13|Fan assembly in vehicle|
    EP16885286.1A| EP3402971B1|2016-01-15|2016-12-13|A fan arrangement in a vehicle|
    US15/779,292| US20200300153A1|2016-01-15|2016-12-13|A fan arrangement in a vehicle|
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