EP2259947A1 - Fan arrangement - Google Patents

Fan arrangement

Info

Publication number
EP2259947A1
EP2259947A1 EP09715209A EP09715209A EP2259947A1 EP 2259947 A1 EP2259947 A1 EP 2259947A1 EP 09715209 A EP09715209 A EP 09715209A EP 09715209 A EP09715209 A EP 09715209A EP 2259947 A1 EP2259947 A1 EP 2259947A1
Authority
EP
European Patent Office
Prior art keywords
fan
air
engine
vehicle
fan arrangement
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.)
Withdrawn
Application number
EP09715209A
Other languages
German (de)
French (fr)
Other versions
EP2259947A4 (en
Inventor
Conny Granberg
Mats Wall
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.)
Scania CV AB
Original Assignee
Scania CV AB
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 Scania CV AB filed Critical Scania CV AB
Publication of EP2259947A1 publication Critical patent/EP2259947A1/en
Publication of EP2259947A4 publication Critical patent/EP2259947A4/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K11/00—Arrangement in connection with cooling of propulsion units
    • B60K11/06—Arrangement in connection with cooling of propulsion units with air cooling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P5/00—Pumping cooling-air or liquid coolants
    • F01P5/02—Pumping cooling-air; Arrangements of cooling-air pumps, e.g. fans or blowers
    • F01P5/06—Guiding or ducting air to, or from, ducted fans
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P1/00—Air cooling
    • F01P2001/005—Cooling engine rooms
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P5/00—Pumping cooling-air or liquid coolants
    • F01P5/02—Pumping cooling-air; Arrangements of cooling-air pumps, e.g. fans or blowers
    • F01P2005/025—Pumping cooling-air; Arrangements of cooling-air pumps, e.g. fans or blowers using two or more air pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P5/00—Pumping cooling-air or liquid coolants
    • F01P5/02—Pumping cooling-air; Arrangements of cooling-air pumps, e.g. fans or blowers
    • F01P5/04—Pump-driving arrangements
    • F01P2005/046—Pump-driving arrangements with electrical pump drive

Definitions

  • the present invention relates to a fan arrangement of a vehicle according to the preamble of claim 1.
  • Vehicles e.g. trucks and passenger cars, often have the engine situated at the front in an engine space which is effectively ventilated by the draught caused by movement of the vehicle and also by a fan at the front of the vehicle which draws air through the vehicle's radiator to cool the latter, after which the air thus warmed, together with the air warmed by the engine in the engine space, is evacuated, e.g. by the engine space not being provided with any enclosing floor.
  • Engines spaces arranged in the rear portion of a vehicle are often more enclosed than engine spaces at the front of vehicles.
  • a problem may arise because air warmed by the engine is not evacuated quickly enough from the engine space, leading to high temperatures in parts of the engine space, since the draught caused by movement of the vehicle will make no major contribution to ventilating the engine space.
  • Arranging the fan to draw ambient air in through a cooling package in which the fan is also adapted to blowing the ambient air warmed by the cooling package towards the engine in the engine space has been a way of trying to increase the amount of air flowing through the engine space in order to prevent the problem of local over-temperatures.
  • US 5 971 709 A refers to a device of the kind mentioned above.
  • EP 0 735 252 A2 refers to a cooling system for vehicles in which a fan arranged between a heat exchanger and a noise-damping wall creates a negative pressure whereby air is drawn through the heat exchanger for cooling the latter.
  • the noise-damping wall is arranged between the fan and an engine space. Arranging the fan to direct the air flow in a radial direction close to the noise-damping wall also induces negative pressure in a region close to the noise-damping wall, thereby drawing air out from the engine space via apertures in the noise-damping wall to cool the engine space.
  • a fan arrangement according to claim 1 which comprises the characteristic that a fan cowling in the engine space is adapted to separating two cooling air flows from one another to prevent the air streams from affecting one another, affords the advantage of maximising the cooling air flows and hence avoiding over-temperatures in the engine space.
  • Figure 1 depicts schematically a vehicle with an engine space and a fen arrangement according to a first embodiment of the invention
  • Figure 2 depicts schematically a fan arrangement according to a second embodiment of the invention.
  • Figure 1 depicts schematically a vehicle 2 with an engine space 4 and an engine 6, and a fan arrangement 8 according to a first embodiment of the invention, which engine space 4 further comprises at least two inlets 10, 12 through which the fan arrangement 8 is adapted to drawing in ambient air in the form of cooling air flows A, B.
  • a cooling package 14 is situated in the first inlet 10.
  • the fan arrangement 8 comprises a first fan 16 adapted to drawing in ambient air in the direction of arrow A over the cooling package 14 to cool the latter, and to blowing this warmed air from the engine space 4 out to the surroundings 18 of the vehicle 2 via a first duct 20 in the direction of arrow C.
  • the fan arrangement 8 further comprises a second fan 22 adapted to drawing in ambient air in the direction of arrow B over the engine 6 to cool the latter and to blowing this warmed air from the engine space 4 out to the surroundings 18 of the vehicle 2 via a second duct 24 in the direction of arrow D.
  • the two fans 16, 22 are arranged on the same drive shaft 26 to make it possible for them to be driven by the same drive source.
  • the fan arrangement 8 according to the invention is particularly advantageous in vehicles 2 in which the engine space 4 is arranged in the rear portion of the vehicle 2 and is relatively enclosed, which means that the draught caused by movement of the vehicle makes no major contribution to blowing ambient air towards the cooling package 14 and the engine 6 to cool these latter, and in which the air warmed by them is not evacuated quickly enough from the engine space 4, leading to high temperatures in parts of the engine space 4.
  • the fan arrangement 8 is also applicable in vehicles where the engine is arranged in the forward portion of the vehicle or in some further portion of the vehicle, e.g. centrally in the vehicle.
  • the fan arrangement 8 further comprises at least one fan cowling 28 which separates the two air flows A/C and B/D from one another so that they can flow in mutually separated ducts 20, 24 to prevent the air streams from affecting one another, e.g. by one of the air streams retarding the other air stream, thereby making it possible to maximise the air flow velocity and the cooling capacity.
  • Ambient air is drawn into the engine space 4 in the direction of arrow B through at least one second inlet 12 which may be a valve, a duct or an intermediate space or a slit or the like.
  • the drive shaft 26 of the fans 16, 22 is powered by a separate motor 30, e.g. a hydraulic motor.
  • the air stream C which has passed over the cooling package 14 is usually warmer than the air stream D which has flowed past the engine 6.
  • a seal device 32 e.g. an annular brush, is preferably arranged between the fan cowling 28 and the fens 16, 22.
  • the seal device 32 may be fastened either to the fan cowling 28 or to the fans 16, 22.
  • the cooling package 14 may comprise one or more units, e.g. oil cooler, fuel cooler, charge air cooler, coolant cooler for the vehicle's engine or cooler for the vehicle's air conditioning system.
  • the fan 16 adapted to drawing ambient air through the cooling package 14 is an axial fan and the fan 22 adapted to drawing air past the engine 6 is a radial fan.
  • the fan cowling 28 may take the form of a single part or a number of separate parts 36, 38, 40.
  • FIG. 2 depicts schematically a fan arrangement 8 according to a second embodiment of the invention. This embodiment differs from that described with reference to Figure 1 in that the drive shaft 34 of the fans 16, 22 is powered by the vehicle's engine 6.

Abstract

The invention relates to a fan arrangement of a vehicle (2) in which the engine space (4) comprises inlets (10, 12) through which the fan arrangement (8) is adapted to drawing in ambient air in the form of cooling air flows (A, B), a cooling package (14) is situated in a first inlet (10) and the fan arrangement (8) comprises a first fan (16) adapted to drawing in (A) ambient air over the cooling package (14) to cool the latter, and to blowing out (C) warmed air from the engine space (4) to the surroundings (18) of the vehicle (2) via a first duct (20), the fan arrangement (8) further comprises a second fan (22) adapted to drawing in (B) ambient air over the engine (6) to cool the latter, and to blowing out warmed air (D) from the engine space (4) to the surroundings (18) of the vehicle (2) via a second duct (24), the first fan (16) is arranged on the same drive shaft (26) as the second fan (22), and a fan cowling (28) in the engine space (4) is adapted to separating the two air flows (A/C and B/D) from one another to prevent the air streams from affecting one another.

Description

FAN ARRANGEMENT
Technical field
The present invention relates to a fan arrangement of a vehicle according to the preamble of claim 1.
Background
Vehicles, e.g. trucks and passenger cars, often have the engine situated at the front in an engine space which is effectively ventilated by the draught caused by movement of the vehicle and also by a fan at the front of the vehicle which draws air through the vehicle's radiator to cool the latter, after which the air thus warmed, together with the air warmed by the engine in the engine space, is evacuated, e.g. by the engine space not being provided with any enclosing floor.
Engines spaces arranged in the rear portion of a vehicle, e.g. as may be the case in buses, are often more enclosed than engine spaces at the front of vehicles. In these often more enclosed engine spaces, a problem may arise because air warmed by the engine is not evacuated quickly enough from the engine space, leading to high temperatures in parts of the engine space, since the draught caused by movement of the vehicle will make no major contribution to ventilating the engine space.
Arranging the fan to draw ambient air in through a cooling package in which the fan is also adapted to blowing the ambient air warmed by the cooling package towards the engine in the engine space has been a way of trying to increase the amount of air flowing through the engine space in order to prevent the problem of local over-temperatures.
US 5 971 709 A refers to a device of the kind mentioned above.
A problem in installations of that kind is that the air warmed by the cooling package is often at a higher temperature than the engine. EP 0 735 252 A2 refers to a cooling system for vehicles in which a fan arranged between a heat exchanger and a noise-damping wall creates a negative pressure whereby air is drawn through the heat exchanger for cooling the latter. The noise-damping wall is arranged between the fan and an engine space. Arranging the fan to direct the air flow in a radial direction close to the noise-damping wall also induces negative pressure in a region close to the noise-damping wall, thereby drawing air out from the engine space via apertures in the noise-damping wall to cool the engine space. Brief description of the invention
The problem of over-temperatures in engine spaces is solved according to the invention by a fan arrangement according to the characterising part of claim 1.
A fan arrangement according to claim 1 , which comprises the characteristic that a fan cowling in the engine space is adapted to separating two cooling air flows from one another to prevent the air streams from affecting one another, affords the advantage of maximising the cooling air flows and hence avoiding over-temperatures in the engine space.
Brief description of the drawings
The invention is explained in more detail below with reference to the attached drawings, in which:
Figure 1 depicts schematically a vehicle with an engine space and a fen arrangement according to a first embodiment of the invention, and
Figure 2 depicts schematically a fan arrangement according to a second embodiment of the invention.
Description of preferred embodiments Similar items in the various drawings are designated by the same reference notations.
Figure 1 depicts schematically a vehicle 2 with an engine space 4 and an engine 6, and a fan arrangement 8 according to a first embodiment of the invention, which engine space 4 further comprises at least two inlets 10, 12 through which the fan arrangement 8 is adapted to drawing in ambient air in the form of cooling air flows A, B. A cooling package 14 is situated in the first inlet 10. The fan arrangement 8 comprises a first fan 16 adapted to drawing in ambient air in the direction of arrow A over the cooling package 14 to cool the latter, and to blowing this warmed air from the engine space 4 out to the surroundings 18 of the vehicle 2 via a first duct 20 in the direction of arrow C. The fan arrangement 8 further comprises a second fan 22 adapted to drawing in ambient air in the direction of arrow B over the engine 6 to cool the latter and to blowing this warmed air from the engine space 4 out to the surroundings 18 of the vehicle 2 via a second duct 24 in the direction of arrow D. The two fans 16, 22 are arranged on the same drive shaft 26 to make it possible for them to be driven by the same drive source. The fan arrangement 8 according to the invention is particularly advantageous in vehicles 2 in which the engine space 4 is arranged in the rear portion of the vehicle 2 and is relatively enclosed, which means that the draught caused by movement of the vehicle makes no major contribution to blowing ambient air towards the cooling package 14 and the engine 6 to cool these latter, and in which the air warmed by them is not evacuated quickly enough from the engine space 4, leading to high temperatures in parts of the engine space 4. However, the fan arrangement 8 is also applicable in vehicles where the engine is arranged in the forward portion of the vehicle or in some further portion of the vehicle, e.g. centrally in the vehicle. The fan arrangement 8 further comprises at least one fan cowling 28 which separates the two air flows A/C and B/D from one another so that they can flow in mutually separated ducts 20, 24 to prevent the air streams from affecting one another, e.g. by one of the air streams retarding the other air stream, thereby making it possible to maximise the air flow velocity and the cooling capacity. Ambient air is drawn into the engine space 4 in the direction of arrow B through at least one second inlet 12 which may be a valve, a duct or an intermediate space or a slit or the like.
According to this first embodiment, the drive shaft 26 of the fans 16, 22 is powered by a separate motor 30, e.g. a hydraulic motor.
The air stream C which has passed over the cooling package 14 is usually warmer than the air stream D which has flowed past the engine 6. To prevent the warmer air being led into the engine 6 in situations where the fan 16 produces a larger flow than the fan 22, a seal device 32, e.g. an annular brush, is preferably arranged between the fan cowling 28 and the fens 16, 22. The seal device 32 may be fastened either to the fan cowling 28 or to the fans 16, 22.
The cooling package 14 may comprise one or more units, e.g. oil cooler, fuel cooler, charge air cooler, coolant cooler for the vehicle's engine or cooler for the vehicle's air conditioning system. According to the embodiment depicted in the drawing, the fan 16 adapted to drawing ambient air through the cooling package 14 is an axial fan and the fan 22 adapted to drawing air past the engine 6 is a radial fan. The fan cowling 28 may take the form of a single part or a number of separate parts 36, 38, 40.
Figure 2 depicts schematically a fan arrangement 8 according to a second embodiment of the invention. This embodiment differs from that described with reference to Figure 1 in that the drive shaft 34 of the fans 16, 22 is powered by the vehicle's engine 6.

Claims

Claims
1. A fan arrangement of a vehicle (2) in which the engine space (4) comprises inlets (10, 12) through which the fan arrangement (8) is adapted to drawing in ambient air in the form of cooling air flows (A, B), a cooling package (14) is situated in a first inlet (10) and the fan arrangement (8) comprises a first fan (16) adapted to drawing in (A) ambient air over the cooling package (14) to cool the latter, and to blowing out (C) warmed air from the engine space (4) to the surroundings (18) of the vehicle (2) via a first duct (20), characterised in that the fan arrangement (8) further comprises a second fan (22) adapted to drawing in (B) ambient air over the engine (6) to cool the latter, and to blowing out warmed air (D) from the engine space (4) to the surroundings (18) of the vehicle (2) via a second duct (24), the first fan (16) is arranged on the same drive shaft (26) as the second fan (22), and a fan cowling (28) in the engine space (4) is adapted to separating the two air flows (AJC and B/D) from one another to prevent the air streams from affecting one another.
2. A fan arrangement according to claim 1, characterised in that a seal device (32) is arranged between the fan cowling (28) and the fans (16, 22).
3. A fan arrangement according to claim 2, characterised in that the seal device (32) is an annular brush.
4. A fan arrangement according to claim 1 or 2 characterised in that the cooling package (14) comprises one or more units from among oil cooler, fuel cooler, charge air cooler, coolant cooler for the vehicle's engine or cooler for the vehicle's air conditioning system.
5. A fan arrangement according to any one of the foregoing claims, characterised in that the fan (16) adapted to drawing ambient air through the cooling package (14) is an axial fan and that the fan (22) adapted to drawing air past the engine (6) is a radial fan.
6. A fan arrangement according to any one of the foregoing claims, characterised in that the drive shaft (34) is powered by the vehicle's engine (6) or a separate motor (30).
7. A fan arrangement according to any one of the foregoing claims, characterised in that the fan cowling (28) takes the form of one or more separate parts (36, 38, 40).
EP09715209.4A 2008-02-29 2009-02-20 Fan arrangement Withdrawn EP2259947A4 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE0800487A SE532040C2 (en) 2008-02-29 2008-02-29 Fan Events
PCT/SE2009/050192 WO2009108114A1 (en) 2008-02-29 2009-02-20 Fan arrangement

Publications (2)

Publication Number Publication Date
EP2259947A1 true EP2259947A1 (en) 2010-12-15
EP2259947A4 EP2259947A4 (en) 2014-09-17

Family

ID=41016341

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09715209.4A Withdrawn EP2259947A4 (en) 2008-02-29 2009-02-20 Fan arrangement

Country Status (4)

Country Link
EP (1) EP2259947A4 (en)
BR (1) BRPI0907403A2 (en)
SE (1) SE532040C2 (en)
WO (1) WO2009108114A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8919469B2 (en) 2010-08-26 2014-12-30 Caterpillar Inc. Ventilation system for engine and aftertreatment compartments and components

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4114714A (en) * 1975-06-13 1978-09-19 Hans List Motor vehicle having sound-suppressing engine enclosure
JPH0861062A (en) * 1994-08-24 1996-03-05 Yanmar Diesel Engine Co Ltd Engine-mounted working machinery
WO2001004474A1 (en) * 1999-07-13 2001-01-18 Yanmar Diesel Engine Co., Ltd. Closed type engine chamber structure

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4398508A (en) * 1981-02-20 1983-08-16 Volvo White Truck Corporation Engine cooling fan construction
DE4136282C1 (en) * 1991-11-04 1993-05-06 Adam Opel Ag, 6090 Ruesselsheim, De
US5590624A (en) 1995-03-31 1997-01-07 Caterpillar Inc. Engine cooling systems
JPH09112268A (en) * 1995-10-19 1997-04-28 Hitachi Constr Mach Co Ltd Engine cooling device and construction equipment
DE19710606B4 (en) 1997-03-14 2004-07-15 Behr Gmbh & Co. Fans, in particular for radiators of internal combustion engines

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4114714A (en) * 1975-06-13 1978-09-19 Hans List Motor vehicle having sound-suppressing engine enclosure
JPH0861062A (en) * 1994-08-24 1996-03-05 Yanmar Diesel Engine Co Ltd Engine-mounted working machinery
WO2001004474A1 (en) * 1999-07-13 2001-01-18 Yanmar Diesel Engine Co., Ltd. Closed type engine chamber structure

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2009108114A1 *

Also Published As

Publication number Publication date
SE532040C2 (en) 2009-10-06
SE0800487L (en) 2009-08-30
EP2259947A4 (en) 2014-09-17
WO2009108114A1 (en) 2009-09-03
BRPI0907403A2 (en) 2015-07-21

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