US20020152766A1 - Cooling system for a vehicle - Google Patents

Cooling system for a vehicle Download PDF

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Publication number
US20020152766A1
US20020152766A1 US10/118,265 US11826502A US2002152766A1 US 20020152766 A1 US20020152766 A1 US 20020152766A1 US 11826502 A US11826502 A US 11826502A US 2002152766 A1 US2002152766 A1 US 2002152766A1
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US
United States
Prior art keywords
fan
air flow
cooling system
front wall
cooling
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.)
Abandoned
Application number
US10/118,265
Other languages
English (en)
Inventor
Daniela Fischer
Wolfgang Knecht
Werner Zobel
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.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of US20020152766A1 publication Critical patent/US20020152766A1/en
Abandoned legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
    • F28D1/0408—Multi-circuit heat exchangers, e.g. integrating different heat exchange sections in the same unit or heat exchangers for more than two fluids
    • F28D1/0426—Multi-circuit heat exchangers, e.g. integrating different heat exchange sections in the same unit or heat exchangers for more than two fluids with units having particular arrangement relative to the large body of fluid, e.g. with interleaved units or with adjacent heat exchange units in common air flow or with units extending at an angle to each other or with units arranged around a central element
    • 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
    • F01P3/00—Liquid cooling
    • F01P3/18—Arrangements or mounting of liquid-to-air heat-exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/008—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for vehicles
    • F28D2021/0082—Charged air coolers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/008—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for vehicles
    • F28D2021/0091—Radiators
    • F28D2021/0094—Radiators for recooling the engine coolant

Definitions

  • This invention relates to cooling systems and more particularly to cooling systems for vehicles wherein a plurality of heat exchangers form a box-like arrangement around a radial fan to receive a radial cooling flow therefrom and dynamic air pressure is produced on the cooling system by relative motion between the vehicle and the surrounding environment.
  • the fan which draws a cooling air flow through the core(s) of the heat exchanger(s) is typically driven electrically or directly by the engine and is typically only placed in operation as required.
  • the large cross section of the heat exchanger cores facing the front of the vehicle can permit a relatively high volume flow of cooling air as a result of the dynamic air pressure created by forward movement of the vehicle, which can be an adequate flow of cooling air when the cooling requirements for the heat exchangers are relatively low.
  • box-like cooling systems the ability to provide an adequate volume of cooling air flow solely from the dynamic air pressure created by forward movement of the vehicle is complicated by the desire to use the radial fan to its best ability during its operating phases.
  • a cooling system provided for a vehicle and including a radial fan rotable about an axis, a plurality of heat exchangers spaced radially from the fan and arranged around the fan to receive a radial air flow therefrom, and a front wall.
  • the fan has a non-operating state wherein the fan is not driven about the axis, and operating state wherein the fan is driven about the axis to deliver a radial air flow to the cooling system.
  • the heat exchangers bound in interior space of the cooling system.
  • the front wall covers an opening to the interior space bounded by the heat exchangers.
  • the front wall includes an air inlet to direct an axial air flow to the fan, and a plurality of dynamic air flow ports spaced from the air inlet.
  • the ports have an open state wherein the ports allow a cooling air flow into the interior space in response to the radial fan being in the non-operating state and a dynamic air pressure on an exterior side of the front wall, and a closed state wherein said cooling air flow into the interior space is substantially blocked in response to the fan being in the operating state.
  • the ports include a plurality of openings through the front wall and at least one flapper valve having a closed position wherein the valve covers at least one of the openings in response to the radial air flow of the fan, and an open position wherein the valve is spaced from the opening to allow the cooling air flow in response to the dynamic air pressure being greater than an air pressure in the interior space.
  • the at least one flapper valve includes a flexible member cantilevered to an interior surface of the front wall.
  • the ports include a plurality of openings through the front wall and at least one closure element movable between a closed position and an open position in response to signals that control the operating and non-operating states of the fan.
  • FIG. 1 is a perspective view of a cooling system embodying the present invention
  • FIG. 2 is an enlarged, partial section view taken from line 2 - 2 in FIG. 1;
  • FIG. 3 is an enlarged , partial section view taken from line 3 - 3 in FIG. 1.
  • FIGS. 1 - 3 A cooling system 10 in embodying the present invention is shown in FIGS. 1 - 3 .
  • the cooling system 10 includes a radial fan 12 rotatable about an axis 14 , three heat exchangers 16 , 18 , and 20 spaced radially from the fan 12 and forming a box-like arrangement around the fan 12 to receive a radial air flow therefrom, and a front wall 22 covering an opening 24 to an interior space 26 bounded by the heat exchangers 16 , 18 , and 20 .
  • the heat exchangers 16 and 18 are provided in the form of a pair of radiators positioned on the left side and the right side of the cooling system 10 , and the heat exchanger 20 is provided in the form of a charged cooler positioned on the top of the cooling system 10 .
  • a wall 28 best seen in FIGS. 1 and 2 is provided to close the bottom of the system 10 .
  • a back wall is provided to close the back of the system 10 .
  • the fan 12 includes blades or scoops 30 , a rear wall 32 , and a cover disk or ring 34 (best seen in FIGS. 2 and 3).
  • the fan is responsive to control signals (shown schematically at 36 ) that control the operational status of the fan 12 between a non-operating state wherein the fan 12 is not driven about the axis 14 , and an operating state wherein the fan 12 is driven about the axis 14 to deliver the radial air flow to the cooling system 10 .
  • Each of the heat exchangers 16 , 18 , and 20 include a core 42 defined by flattened tubes 44 that extends between a pair of manifolds or collecting boxes 45 , with fins 46 extending between the flattened tubes 44 .
  • the core 42 of the charge cooler 20 is larger in its core depth 48 than the core depth 30 of the heat exchangers 16 and 18 and includes two rows of the flattened tubes 44 .
  • the width 50 of the charge cooler 20 is greater than the width 50 of the heat exchangers 16 and 18 , which results in a distinct protrusion 52 of the charge cooler 20 extending forward beyond the front wall 22 , as best seen in FIG. 2.
  • a cover sheet 54 is provided to maintain the air flow within the interior space 26 of the cooling system 10 prior to directing the cooling air flow over the protrusion 52 .
  • the front wall 22 includes an intake or inlet opening 60 defined by a nozzle 62 that is centered on the axis 14 to direct an axial air flow to the fan 12 as it is drawn into the cooling system 10 by the fan 12 .
  • the fan axis 14 and the inlet 60 are located closer to the top of the cooling system 10 .
  • the front wall 22 is exposed to an air flow that impinges against the front wall 22 as a result of the forward motion of the vehicle in which the cooling system 10 is mounted.
  • This air flow produces a dynamic air pressure on an exterior side 64 of the front wall 22 .
  • a plurality of dynamic air flow ports 66 are provided in the front wall 22 spaced from the air inlet 60 , with the ports 66 having an open state wherein the ports 66 allow a cooling flow into the interior space 26 in response to the radial fan 12 being in the non-operating state and to the dynamic air pressure on the exterior side 64 of the front wall 22 , and a closed state wherein the cooling air flow into the interior space 26 is substantially blocked in response to the fan 12 being in the operating state.
  • the ports 66 include a plurality of openings 68 through the front wall 22 and a plurality closure elements 70 in the form of flapper valves 72 . More specifically, in the illustrated embodiment, a total of nine of the openings 68 are provided in the front wall 22 , with two of the openings 68 located at the top of the front wall 22 spaced on either side of the front wall 22 , and the remaining seven openings 98 being arranged beneath the intake opening 60 .
  • the shape, number, and arrangement of the openings 68 can be varied depending upon the particular requirements of the cooling system 10 .
  • openings 68 and the front wall 24 may be a grate-like construction, i.e., designed in the fashion of a cooling grate or core.
  • the upper two ports 66 are shown in the open state, i.e. with the flapper valve 72 positioned away from the opening 68 to allow the cooling air flow into the interior space 26 .
  • the lower ports 66 are shown in the closed state in FIGS. 1 and 3 with the flapper valves 72 covering their respective openings 68 to substantially block the cooling air flow from flowing through the openings 68 into the interior space 26 .
  • the flapper valves 72 are preferably made of a flexible sheet of material that is fastened to an interior surface 74 of the front wall 22 in a cantilever fashion, as best seen in FIG. 2.
  • flapper valve 72 could be formed from a tab of a suitable rubber material having an edge fastened to the interior surface 74 .
  • the air pressure within the interior space 26 generated by the radial air flow when the fan 12 is in the operating state operates to move the flapper valves 72 to their closed position covering the openings 68 , but when the fan 12 is in a non-operating state, the dynamic air pressure on the front wall 22 produced by forward movement of the vehicle is sufficient to move the flapper valves 72 to their open position away from the opening 68 to allow the cooling air flow into the interior space 26 where it is then directed through the cores 42 so that heat can be rejected from the cores 42 to the cooling air flow.
  • the flapper valves 72 can also be configured differently. For example, in some embodiments it may be desirable for several, smaller openings 68 to be closed by a single flapper valve 72 .
  • the flapper valve 72 shown in FIG. 2 is fastened to the interior surface 74 at the top of the valve 72 , it could be fastened to the inside surface 74 to the one side or the other of the openings 68 .
  • the size of the flapper valve 72 should be sized to cover the openings 68 so that the openings 68 can be closed with a suitable tightness.
  • closure elements 70 in the form of the flapper valves 72
  • closure elements 70 that are movable between the closed position and the open position in response to the signals 36 that control the operating and non-operating states of the fan 12 by means of a suitable mechanism.
  • the closure elements 70 could be slidable louvers that are moved between the closed and open state by a pinion and rack, similar to the mechanisms disclosed in DE 197 24 728 A1.
  • closure elements 70 made of a flexible material or of a material that is flexible in a windable or unwindable region, could be provided for movement via driven rollers or the like such as those disclosed in German unexamined patent application DE 0S 25 01 013 which drive a tape filter.
  • the closure element 70 could include a cover made of a rigid plate that is movable by means of a roller drive provided with upper and lower guides arranged on the front wall 22 .
  • the closure elements 70 could be provided in the form of shutters or diaphragms similar to the shutters or diaphragms utilized in a camera lens.
  • the shape, number and arrangement of the ports 66 and the front wall 22 will be guided according to the volume of cooling air flow required for a given operating condition, how the cooling air flow must be distributed within the interior space 26 to the heat exchangers 16 , 18 , and 20 , what types of closure elements 70 are selected, and the strength and stability requirements for the front wall 22 , such as for example if the front wall 22 serves as a support element of the cooling system 10 .
  • the system 10 provides a box-like cooling system that can take advantage of the dynamic air pressure provided by forward movement of the vehicle, without having a significant and adverse effect on the efficiency on the radial fan 12 during its operating phases by allowing a cooling air flow into the interior space 26 when the fan is not operating and preventing the radial air flow of the fan from escaping through the front wall 22 during the operating state of the fan 12 .
  • This in turn can allow the cooling system 12 to operate over a larger operating range in dynamic pressure operation, i.e., without using the radial fan 12 so that less power is required.
  • the engagement frequency and engagement time of the radial fan 12 can be reduced by the invention, which leads to reduced fuel consumption for the vehicle.

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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)
  • Thermal Sciences (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
  • Motor Or Generator Cooling System (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
US10/118,265 2001-04-21 2002-04-08 Cooling system for a vehicle Abandoned US20020152766A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10119591A DE10119591A1 (de) 2001-04-21 2001-04-21 Kühlanlage für Kraftfahrzeuge
DEDE10119591.5 2001-04-21

Publications (1)

Publication Number Publication Date
US20020152766A1 true US20020152766A1 (en) 2002-10-24

Family

ID=7682219

Family Applications (1)

Application Number Title Priority Date Filing Date
US10/118,265 Abandoned US20020152766A1 (en) 2001-04-21 2002-04-08 Cooling system for a vehicle

Country Status (5)

Country Link
US (1) US20020152766A1 (de)
EP (1) EP1251324B1 (de)
AT (1) ATE279707T1 (de)
DE (2) DE10119591A1 (de)
ES (1) ES2230403T3 (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020189786A1 (en) * 2001-04-25 2002-12-19 Daniela Fischer Box-like cooling system
US20050006059A1 (en) * 2003-06-03 2005-01-13 Nicolai Tarasinski Heat exchanger
WO2005068925A1 (de) * 2004-01-19 2005-07-28 Wolfgang Riese Kühlvorrichtung, insbesondere zum kühlen von druckluft
US20080024983A1 (en) * 2006-07-31 2008-01-31 International Business Machines Corporation A dynamic air moving system
US20080099261A1 (en) * 2006-10-31 2008-05-01 Enviro-Cool, Inc. Air management system for heavy duty truck under-hood heat control
US20080178631A1 (en) * 2007-01-25 2008-07-31 Stuart Scott Snyder Recreational vehicle refrigerator efficiency device
US8752522B1 (en) * 2012-03-14 2014-06-17 Asaf Cohen Compact multi-unit vehicle cooling system

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005062366A1 (de) * 2005-12-23 2007-07-05 Behr Gmbh & Co. Kg Lüfteranordnung bei einem Kraftfahrzeug

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US1973078A (en) * 1933-10-25 1934-09-11 Robert Gair Co Inc Shutter for automobile radiators
DE1098766B (de) * 1956-03-02 1961-02-02 Voith Gmbh J M Einrichtung zur selbsttaetigen Regelung einer Kuehlanlage, insbesondere fuer fluessigkeitsgekuehlte Brennkraftmaschinen von Schienenfahrzeugen
US3854459A (en) * 1973-12-28 1974-12-17 Mack Trucks Fan shroud for an engine cooling system
DE2501013A1 (de) 1975-01-11 1976-07-15 Trox Gmbh Geb Rollbandfilter fuer insbesondere luftkanaele in klimatechnischen anlagen
DE2657840B2 (de) * 1976-12-21 1979-07-26 Sueddeutsche Kuehlerfabrik Julius Fr. Behr Gmbh & Co Kg, 7000 Stuttgart Kühlanlage für Brennkraftmaschinen
DE3446950C1 (de) * 1984-12-21 1986-05-22 Bayerische Motoren Werke AG, 8000 München Steuervorrichtung fuer die Kuehlluft luft-fluessigkeits-gekuehlter Brennkraftmaschinen,insbesondere von Kraftfahrzeugen
DE3545650A1 (de) 1985-12-21 1987-06-25 Audi Ag Kraftfahrzeug mit gekapselter brennkraftmaschine
FR2607759B1 (fr) * 1986-12-08 1990-10-19 Peugeot Buse de ventilateur d'un vehicule automobile
DE3942010C2 (de) * 1989-12-20 2001-05-10 Audi Ag Vorrichtung zum Steuern zumindest einer Kühlluft-Klappe
DE4132572C2 (de) * 1991-09-30 1995-07-06 Bayerische Motoren Werke Ag Kraftfahrzeug mit einem thermisch gekapselten Antriebsaggregat
DE4304336A1 (de) * 1993-02-13 1994-08-18 Audi Ag Vorrichtung zum Steuern zumindest einer Kühlluftklappe
DE19713712C1 (de) * 1997-04-03 1998-04-16 Laengerer & Reich Gmbh & Co Radialventilator, insbesonders als Lüfter für die Kühlanlage eines Kraftfahrzeuges
DE19724728C2 (de) 1997-06-12 2003-01-30 Modine Mfg Co Kühleranordnung und luftgekühlter Kühler
DE59904721D1 (de) 1999-04-16 2003-04-30 Modine Mfg Co Kühlanlage
US6129056A (en) * 1999-08-23 2000-10-10 Case Corporation Cooling system for work vehicle
DE19950754A1 (de) * 1999-10-21 2001-04-26 Modine Mfg Co Kühlanlage II
DE19950755A1 (de) 1999-10-21 2001-04-26 Modine Mfg Co Kühlanlage III

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020189786A1 (en) * 2001-04-25 2002-12-19 Daniela Fischer Box-like cooling system
US7028751B2 (en) * 2001-04-25 2006-04-18 Modine Manufacturing Company Box-like cooling system
US20050006059A1 (en) * 2003-06-03 2005-01-13 Nicolai Tarasinski Heat exchanger
WO2005068925A1 (de) * 2004-01-19 2005-07-28 Wolfgang Riese Kühlvorrichtung, insbesondere zum kühlen von druckluft
US20080024983A1 (en) * 2006-07-31 2008-01-31 International Business Machines Corporation A dynamic air moving system
US7352575B2 (en) 2006-07-31 2008-04-01 International Business Machines Corporation Dynamic air moving system
US20080099261A1 (en) * 2006-10-31 2008-05-01 Enviro-Cool, Inc. Air management system for heavy duty truck under-hood heat control
US7537072B2 (en) 2006-10-31 2009-05-26 Enviro-Cool, Inc. Air management system for heavy duty truck under-hood heat control
US20090277706A1 (en) * 2006-10-31 2009-11-12 Enviro-Cool, Inc. Air management system for heavy duty truck under-hood heat control
US8556013B2 (en) 2006-10-31 2013-10-15 Enviro-Cool, Inc. Air management system for heavy duty truck under-hood heat control
US9470135B2 (en) 2006-10-31 2016-10-18 Enviro-Cool, Inc. Air management system for under-hood heat control
US20080178631A1 (en) * 2007-01-25 2008-07-31 Stuart Scott Snyder Recreational vehicle refrigerator efficiency device
US8752522B1 (en) * 2012-03-14 2014-06-17 Asaf Cohen Compact multi-unit vehicle cooling system

Also Published As

Publication number Publication date
DE50201256D1 (de) 2004-11-18
EP1251324A1 (de) 2002-10-23
EP1251324B1 (de) 2004-10-13
ES2230403T3 (es) 2005-05-01
DE10119591A1 (de) 2002-10-24
ATE279707T1 (de) 2004-10-15

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