EP3728861A1 - Hélice pour ventilateur de systéme thermique de véhicule automobile, ventilateur et système thermique comprenant une telle hélice - Google Patents
Hélice pour ventilateur de systéme thermique de véhicule automobile, ventilateur et système thermique comprenant une telle héliceInfo
- Publication number
- EP3728861A1 EP3728861A1 EP18735305.7A EP18735305A EP3728861A1 EP 3728861 A1 EP3728861 A1 EP 3728861A1 EP 18735305 A EP18735305 A EP 18735305A EP 3728861 A1 EP3728861 A1 EP 3728861A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- propeller
- ring
- central member
- thermal system
- rib
- 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.)
- Granted
Links
- 210000000056 organ Anatomy 0.000 claims description 5
- 238000011144 upstream manufacturing Methods 0.000 description 12
- 238000001816 cooling Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
- F04D29/32—Rotors specially for elastic fluids for axial flow pumps
- F04D29/325—Rotors specially for elastic fluids for axial flow pumps for axial flow fans
- F04D29/329—Details of the hub
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D19/00—Axial-flow pumps
- F04D19/002—Axial flow fans
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
- F04D25/082—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation the unit having provision for cooling the motor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
- F04D29/32—Rotors specially for elastic fluids for axial flow pumps
- F04D29/325—Rotors specially for elastic fluids for axial flow pumps for axial flow fans
- F04D29/326—Rotors specially for elastic fluids for axial flow pumps for axial flow fans comprising a rotating shroud
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
- F04D29/32—Rotors specially for elastic fluids for axial flow pumps
- F04D29/38—Blades
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/5806—Cooling the drive system
-
- 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 invention relates to vehicles and especially motor vehicles.
- the invention also relates to the thermal systems of vehicles. More specifically, the invention relates to fan propellers of these thermal systems. Technological background of the invention
- a motor vehicle generally comprises at least one thermal system.
- the motor vehicle comprises a thermal system for providing thermal regulation, cooling or heating of a passenger compartment of the motor vehicle. This may for example be an air conditioning system of the vehicle.
- the motor vehicle also comprises a thermal system for cooling a motor, generally thermal, of the vehicle.
- Thermal systems of a motor vehicle often include at least one fan.
- the fan is usually intended to direct a flow of air through a heat exchanger which can in particular be a tube heat exchanger.
- the fan thus comprises a propeller whose mechanical work necessary for its rotation is provided by a motor which is generally electric.
- the helix includes a receiving bowl from which a plurality of blades extends.
- the propeller motor is attached to the receiving bowl.
- the propeller receiving bowl may have two separate architectures to provide engine cooling.
- the receiving bowl comprises at least one through orifice facing a through orifice of the motor.
- Such reception bowls are sometimes referred to as "open bowls".
- a portion of an air flow generated by the propeller passes through the engine and the receiving bowl due to a pressure difference existing between the upstream and downstream of the propeller.
- the engine is cooled relatively efficiently.
- that part of the airflow that has passed through the engine and the receiving bowl, from the downstream upstream of the propeller disturbs the flow of air from upstream to downstream of the propeller. the propeller. This disturbance has the effect of reducing the efficiency of the propeller.
- the receiving bowl does not include a through hole while the engine comprises one.
- the receiving bowl includes a conduit that leads to the feet of the blades downstream of the propeller.
- Such bowls of reception are qualified "Closed bowls".
- a portion of the air flow generated by the propeller passes through the engine and the duct.
- the part of the air flow used to cool the engine is therefore confined in the downstream part of the propeller, which has the effect of not affecting the efficiency of the propeller.
- the cooling is less efficient than in the case of an open receiving bowl because the part of the air flow used to cool the motor does not have the same flow rate as in the case of an open bowl.
- An object of the invention is to provide a propeller for a thermal system fan that retains a good efficiency and whose engine can be effectively cooled.
- the invention provides a propeller for a motor vehicle thermal system fan characterized in that it comprises a bowl for receiving a motor of the propeller and at least one blade connected to the receiving bowl, the receiving bowl further comprising:
- a central organ comprising at least one through orifice
- At least one rib disposed on a front face of the ring, with reference to a direction of flow of an air flow generated by the helix, extending radially outwards so as to have a curved shape oriented in the opposite direction of a direction of rotation of the helix.
- the central body of the receiving bowl comprises a through orifice which is intended to be arranged facing a through orifice of the engine to generate a flow of air for cooling the motor.
- This flow of air has a sufficient flow to effectively cool the engine because it is related to a pressure difference between the upstream and downstream of the propeller.
- the propeller according to the invention thus makes it possible to effectively cool the engine while maintaining satisfactory performance.
- an angle formed by a line tangent to the rib and passing through an outer radial end of the rib and a line passing through a center of the ring and the outer radial end of the rib is between 15 ° and 100 ° and preferably between 20 ° and 80 °; the angle can also be between 20 ° and 70 °; in general, the angle is at least 20 °; it has been found that such angular values can preserve a satisfactory performance of the propeller;
- the ring extends away from the central member so as to provide a passage between the ring and the central member;
- the propeller comprises at least one second rib disposed on the front face of the crown and extending partially over the passage formed between the ring and the central member, the second rib extending radially outwards so as to present a curved shape oriented in the opposite direction of the rotation of the helix; this second rib also makes it possible to compensate for the gyration transferred to the air flow but also to structurally reinforce the bowl for receiving the propeller;
- the central member is offset relative to the ring in a direction orthogonal to the ring;
- the central member has a disk shape
- the through orifice of the central organ is formed in the center of the central organ
- a motor vehicle thermal system fan comprising a propeller as described above and an electric motor comprising a through orifice disposed opposite the through orifice of the central body of the propeller.
- a thermal system for a motor vehicle comprising a fan as described above.
- FIG. 1 is a schematic illustration of a portion of a thermal system according to the invention
- FIG. 3 is a perspective sectional view of the propeller and a propeller motor
- FIG. 4 is a perspective view of the helix similar to that of Figure 2 but close to zoom on a central body of the propeller.
- FIG. 1 diagrammatically shows a portion of a thermal system 10 according to the invention.
- the thermal system 10 is disposed in a motor vehicle. Its function is to cool a heat engine that produces a mechanical work to set the motor vehicle in motion.
- the thermal system 10 of the motor vehicle can have any type of function and may for example be intended to provide thermal regulation of a passenger compartment of the motor vehicle.
- the thermal system 10 can be arranged in any type of vehicle.
- the thermal system 10 comprises a plate heat exchanger 12. This plate heat exchanger 12 is connected to other parts of the thermal system 10.
- the thermal system 10 comprises a fan 14.
- the fan 14 has the function directing an air flow F, shown schematically with the aid of an arrow in FIG. 1, towards the plate heat exchanger 12.
- the fan 14 comprises a propeller 16 and an electric motor 18.
- the electric motor 18 delivers a mechanical work so as to allow the propeller 16 to produce the air flow F.
- the propeller 16 distinguishes an upstream space 19 and a downstream space 20.
- a pressure is greater in the downstream space 20 than in the upstream space 19.
- FIGS. 2 to 4. a so-called "front" face of the propeller 16 is represented. This face is opposite the upstream space 19.
- An opposite face of the propeller, referred to as the "rear" face is next to the downstream space 20.
- the front and rear faces are defined with reference to the direction of flow of the air flow F generated by the propeller 16 when the latter is in operation.
- the propeller 16 comprises a receiving bowl 22.
- the receiving bowl 22 makes it possible to fix the electric motor 18 to the propeller 16 as illustrated in FIG. 3.
- the electric motor 18 comprises a carcass 24 slender one of which a longitudinal end is fixed to a rear face of the receiving bowl 22.
- the receiving bowl 22 comprises a central member 26 and a ring 28.
- the central member 26 has a flat disc shape and comprises a through hole 30 formed at its center.
- the electric motor 18 also comprises a through-orifice 31 extending along a longitudinal direction of the electric motor 18.
- the through-orifice 31 of the electric motor 18 is opposite the through hole 30 of the central member 26 of the receiving bowl 22.
- These two through holes 30, 31 are further arranged one after the other so as to form a pneumatic circuit as will be described more in detail later.
- the central member 26 comprises three orifices 32 which serve to receive means for fixing the central member 26 to the electric motor 18.
- the ring 28 is also flat and extends around and away from the central member 26 so as to provide a passage between the ring 28 and the central member 26.
- the central member 26 is shifted forwardly relative to the ring 28, in a direction parallel to the air flow F which is also a direction orthogonal to the crown 28.
- the propeller 16 also comprises a plurality of blades 34. Each blade 34 extends radially outwardly from an outer peripheral contour 29 of the ring 28.
- the propeller 16 also comprises an outer ring 35 which connects the plurality of blades 34 at their outer radial ends.
- the ring 28 comprises a first series of ribs 36. These ribs 36 are arranged on the front face of the ring 28. The ribs 36 extend only on the front face of the ring 28. These ribs 36 all have the same form. They extend radially outwardly so as to have a curved shape oriented in the opposite direction to a direction of rotation of the plurality of blades 34 of the propeller 16.
- the ring 28 also comprises a second series of ribs 38.
- These ribs 38 each comprise an inner radial end which is fixed to a peripheral contour 27 of the central member 26, as can be seen in particular in FIGS. 3 and 4.
- the ribs 38 extend in part on the crown front face 28.
- the ribs 38 extend partially on the passage formed between the central member 26 and the
- the ribs 38 have a curved shape identical to those of the ribs 36. They therefore also extend radially outwards so as to have a curved shape oriented in the opposite direction to a direction of rotation of the plurality of blades 34 of the helix 16.
- the ribs 38 further have a function of structural reinforcement of the receiving bowl 22. They also have a function of connection between the central member 26 and the ring 28.
- the first series of ribs 36 and the second series of ribs 38 have an identical curvature.
- an angle formed by a line tangent to one of the ribs 36, 38 and passing through its outer radial end and a line passing through a center of the ring 28 and this outer radial end is at least 15 ° or 20 °.
- this angle is between 20 ° and 70 ° or between 20 ° 80 °. This angle can also be more generally between 15 ° and 100 °.
- the first series of ribs 36 and the second series of ribs 38 have identical thicknesses.
- first series of ribs 36 and the second series of ribs 38 may have different curvatures.
- two ribs 36 may have different curvatures between them.
- two ribs 38 may also have different curvatures between them.
- the ribs 36 and 38 may not have identical thicknesses. In the same way, two ribs 36 or two ribs 38 may have different thicknesses or lengths between them.
- the helix 16 is formed by injection.
- the central member 26, the ring 28, the plurality of blades 34 and the outer ring 35 are integral.
- the propeller is then formed in one and the same piece, forming a single piece, which can be obtained in particular by injection of plastic into a mold.
- at least one of the central member 26, the ring 28, the plurality of blades 34 and the outer ring 35 can be separately formed and then assembled to the other parts of the propeller 16.
- these ribs 36, 38 compensate for the gyration imparted by the rotation of the propeller 16 to the second flow of 'air.
- this second flow of air reaches the feet of the plurality of blades 34, it slightly disturbs the flow of air F.
- a performance of the propeller 16 is little affected.
- the central member 26 may have a square shape or any shape.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1756203A FR3073582B1 (fr) | 2017-06-30 | 2017-06-30 | Helice pour ventilateur de systeme thermique de vehicule automobile, ventilateur et systeme thermique comprenant une telle helice |
PCT/EP2018/067663 WO2019002585A1 (fr) | 2017-06-30 | 2018-06-29 | Hélice pour ventilateur de systéme thermique de véhicule automobile, ventilateur et système thermique comprenant une telle hélice |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3728861A1 true EP3728861A1 (fr) | 2020-10-28 |
EP3728861B1 EP3728861B1 (fr) | 2024-05-22 |
Family
ID=59746172
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP18735305.7A Active EP3728861B1 (fr) | 2017-06-30 | 2018-06-29 | Hélice pour ventilateur de systéme thermique de véhicule automobile, ventilateur et système thermique comprenant une telle hélice |
Country Status (5)
Country | Link |
---|---|
US (1) | US11078920B2 (fr) |
EP (1) | EP3728861B1 (fr) |
CN (1) | CN110998098B (fr) |
FR (1) | FR3073582B1 (fr) |
WO (1) | WO2019002585A1 (fr) |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2801793A (en) * | 1955-07-21 | 1957-08-06 | Mc Graw Edison Co | Fan blade |
US3303995A (en) * | 1964-09-08 | 1967-02-14 | Rotron Mfg Co | Fan motor cooling arrangement |
US5582507A (en) * | 1994-09-29 | 1996-12-10 | Valeo Thermique Moteur | Automotive fan structure |
US5967764A (en) * | 1997-08-08 | 1999-10-19 | Bosch Automotive Systems Corporation | Axial fan with self-cooled motor |
IT1308475B1 (it) * | 1999-05-07 | 2001-12-17 | Gate Spa | Motoventilatore, particolarmente per uno scambiatore di calore di unautoveicolo |
US20040076516A1 (en) * | 2002-10-18 | 2004-04-22 | Bird Gregory Michael | High efficiency centrifugal fan |
US20040076515A1 (en) * | 2002-10-21 | 2004-04-22 | Hsieh Hsin-Mao | Vortex fan blade unit |
JP2004270463A (ja) * | 2003-03-05 | 2004-09-30 | Mitsuba Corp | ファン装置 |
US8324766B2 (en) * | 2004-09-06 | 2012-12-04 | Delta Electronics, Inc. | Heat-dissipation structure for motor |
DE102005006184A1 (de) * | 2005-02-10 | 2006-08-24 | Asia Vital Component Co., Ltd., Hsin-Chuan | Rotor mit Kühlwirkung |
WO2008061502A1 (fr) * | 2006-11-24 | 2008-05-29 | Temic Automotive Electric Motors Gmbh | Ventilateur axial pour un ventilateur de véhicule |
JP4291846B2 (ja) * | 2006-11-24 | 2009-07-08 | アスモ株式会社 | ファンモータ |
JP2009270526A (ja) * | 2008-05-09 | 2009-11-19 | Mitsuba Corp | 冷却装置 |
WO2011038884A1 (fr) * | 2009-10-03 | 2011-04-07 | Ebm-Papst St. Georgen Gmbh & Co. Kg | Ventilateur diagonal |
JP5826098B2 (ja) * | 2012-04-04 | 2015-12-02 | 三菱電機株式会社 | プロペラファンおよび空気調和機 |
ITTO20120765A1 (it) * | 2012-09-05 | 2014-03-06 | Johnson Electric Asti S R L | Gruppo di ventilazione, particolarmente per uno scambiatore di calore di un veicolo |
DE102012024034A1 (de) * | 2012-12-08 | 2014-06-12 | Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Würzburg | Kühlerlüfter eines Kraftfahrzeugs |
JP6234589B2 (ja) * | 2014-08-07 | 2017-11-22 | 三菱電機株式会社 | 軸流ファン、及び、その軸流ファンを有する空気調和機 |
EP3667098B1 (fr) * | 2017-08-09 | 2022-08-03 | Mitsubishi Electric Corporation | Ventilateur hélicoïdal, soufflante et appareil à cycle de réfrigération |
-
2017
- 2017-06-30 FR FR1756203A patent/FR3073582B1/fr active Active
-
2018
- 2018-06-29 CN CN201880042768.1A patent/CN110998098B/zh active Active
- 2018-06-29 EP EP18735305.7A patent/EP3728861B1/fr active Active
- 2018-06-29 US US16/623,537 patent/US11078920B2/en active Active
- 2018-06-29 WO PCT/EP2018/067663 patent/WO2019002585A1/fr unknown
Also Published As
Publication number | Publication date |
---|---|
FR3073582A1 (fr) | 2019-05-17 |
FR3073582B1 (fr) | 2022-07-22 |
CN110998098A (zh) | 2020-04-10 |
US11078920B2 (en) | 2021-08-03 |
US20200141420A1 (en) | 2020-05-07 |
CN110998098B (zh) | 2021-09-28 |
EP3728861B1 (fr) | 2024-05-22 |
WO2019002585A1 (fr) | 2019-01-03 |
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