EP2828533A1 - Dispositif de ventilation - Google Patents
Dispositif de ventilationInfo
- Publication number
- EP2828533A1 EP2828533A1 EP13714245.1A EP13714245A EP2828533A1 EP 2828533 A1 EP2828533 A1 EP 2828533A1 EP 13714245 A EP13714245 A EP 13714245A EP 2828533 A1 EP2828533 A1 EP 2828533A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- central hub
- hub
- outer rotor
- rotor
- propeller
- 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
- 238000009423 ventilation Methods 0.000 title claims abstract description 19
- 230000000295 complement effect Effects 0.000 claims description 17
- 230000002093 peripheral effect Effects 0.000 description 9
- 239000000243 solution Substances 0.000 description 8
- 238000001816 cooling Methods 0.000 description 6
- 238000011144 upstream manufacturing Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 3
- 208000032836 Ring chromosome 15 syndrome Diseases 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000004804 winding Methods 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
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/64—Mounting; Assembling; Disassembling of axial pumps
- F04D29/644—Mounting; Assembling; Disassembling of axial pumps especially adapted for elastic fluid pumps
- F04D29/646—Mounting or removal of 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
- 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
- F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
- F04D25/0606—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump
- F04D25/0613—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump the electric motor being of the inside-out type, i.e. the rotor is arranged radially outside a central stator
-
- 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
-
- 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
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F7/00—Ventilation
- F24F7/007—Ventilation with forced flow
Definitions
- the invention relates to a ventilation device comprising a fan impeller and a drive motor of the propeller.
- a fan propeller traditionally comprises a central hub and blades extending radially from the hub to the outside of the propeller.
- Such a propeller is used in particular for cooling the drive motor of a motor vehicle.
- the propeller may be placed upstream or downstream of a heat exchanger, namely a cooling radiator of the drive motor.
- the central hub of the propeller comprises a front wall and a substantially cylindrical peripheral skirt extending from the front wall and to which the blades of the propeller are connected.
- the front wall has a substantially annular shape and allows for example to fix the electric motor for rotating the propeller.
- This electric motor is mounted coaxially to the hub of the propeller.
- the motor may have an inner rotor and the central hub is generally connected to the motor drive shaft.
- fixing is generally by screwing at the front wall of the hub of the propeller. Indeed, according to a known solution, there are three screwing means near the center of the front wall of the hub.
- the thickness of these screwing means is added to the axial size of the ventilation device.
- the invention aims to at least partially overcome these disadvantages of the prior art by providing a ventilation device, allowing the attachment of the hub to the motor for driving in rotation of the propeller, offering a compact solution axially.
- the subject of the invention is a ventilation device comprising a fan impeller and an external rotor motor for driving said propeller, said propeller comprising a central hub having a front wall and an inner lateral wall defining a receiving housing for the outer rotor, and the outer rotor having a front part and a side wall arranged in abutment against the inner side wall of the central hub, characterized in that said device further comprises latching means of the external rotor to the central hub carried on the one hand by the central hub and on the other by the outer rotor.
- upstream and downstream refer here to the direction of flow of the airflow.
- the front wall of the central hub can be opened to receive the front portion of the outer rotor of the motor flush. It is no longer necessary to provide a large amount of material to define the front wall of the hub to the extent that the fixing between the central hub and the engine is no longer at this level.
- the fastening means are provided such that the inner side wall of the hub and the side wall of the outer rotor are gripped together.
- This system therefore minimizes the number of components and facilitates assembly operations.
- Said ventilation device may further comprise one or more of the following features, taken separately or in combination:
- the latching means comprise a ring mounted on the outer rotor and provided with a plurality of elastically deformable clamps, said clamps respectively comprising a first branch arranged in abutment against the side wall of the external rotor and a second branch arranged in abutment against the inner side wall of the central hub, so as to clamp together said rotor and said hub;
- the outer rotor comprises a plurality of magnets and the said clamps are arranged between the said magnets;
- the central hub comprises a plurality of receiving housings of said second branches
- said housings of the central hub respectively comprise at least one snap hook and said second branches respectively comprise at least one orifice complementary to said hook in which said hook is engaged;
- said second branches respectively comprise at least one snap hook and said central hub housings respectively comprise at least one orifice complementary to said hook in which said hook is engaged;
- said second branches respectively have a substantially curved end
- the front wall of the central hub has a central opening receiving the front portion of the outer rotor, and the front wall of the central hub and the front portion of the outer rotor are flush;
- said device comprises additional means for securing in rotation the motor and said hub carried on the one hand by the outer rotor and on the other by said hub;
- the front wall of said hub comprises radial projections engaging complementary notches provided on the front portion of said rotor;
- said hub has a predefined number of cylindrical bosses and the front portion of the outer rotor has complementary through-holes into which said cylindrical bosses are inserted.
- FIG. 1 is a front view of a ventilation device comprising a fan impeller and a drive motor
- FIG. 2 is a perspective view of FIG. 1,
- FIG. 3 is a perspective view of the downstream face of the ventilation device according to the direction of flow of the air flow
- FIG. 4a is a front view of the driving motor of the ventilation device of FIGS. 1 to 3,
- FIG. 4b is a perspective view of FIG. 4a
- FIG. 5 is a sectional view along an axis I-I of FIG. 1;
- FIG. 6 is a perspective view of the upstream face of the helix of the ventilation device of FIG. 2 along the direction of flow of the air flow,
- FIG. 7 is a perspective view of the downstream face in the direction of flow of the air flow of the helix of FIG. 5;
- FIG. 8 is a perspective view of a ring for hanging the rotor of the motor at the hub of the propeller
- FIG. 9 is an enlarged view of a portion B of Figure 8 showing a clamp of the ring of Figure 8 cooperating with a snap hook of the central hub of the propeller.
- the invention relates to a ventilation device 1 comprising a fan fan 3 and a drive motor 5 of the fan 3.
- a ventilation device 1 of a cooling module of a motor vehicle engine block (not shown).
- a cooling module generally comprises a heat exchanger such as a cooling radiator.
- the propeller 3 may be arranged either in front or behind this cooling radiator.
- the drive motor 5, better visible in Figures 4a and 4b, is an electric motor, which comprises according to the embodiment described a stator 7a and an outer rotor 7b.
- the stator 7a has at least one winding and the rotor 7b has one or more magnets.
- the rotor 7b comprises for example several magnets distributed over the circumference of the rotor 7b.
- the magnets are according to the embodiment described permanent magnets.
- the stator 7 has fastening lugs 8 for attachment to a support (not shown).
- the outer rotor 7b is received in the central hub 11 of the propeller 3 (see FIGS.
- a form complementarity is therefore provided between the outer rotor 7b and the central hub 11 of the propeller 3 for the rotational drive.
- the outer rotor 7b has a front portion 9 and a rear portion 9 'opposite the front portion 9.
- the terms “front” and “rear” are employed with reference to the direction of flow of the air flow.
- the front 9 and rear 9 ' are interconnected by a substantially cylindrical side wall 9 ".
- the side wall 9 "of the outer rotor 7b has an outer face intended to be in contact with the central hub 11 during assembly, and an opposite inner face oriented towards the inside of the rotor 7b.
- the front portion 9 of the rotor 7b has through-holes 10, which are better visible in FIG. 4a.
- the brewed air flow passes through the lights 10 which allows the motor 5 to cool down.
- These lights 10 are according to the embodiment shown substantially oblong shape.
- the lights 10 are for example regularly distributed.
- the propeller 3 is rotated about an axis of rotation A (see FIG. 5).
- the direction of rotation of the helix 3 is shown schematically by the arrow F in FIGS. 1 to 3.
- the propeller 3 brews the air passing through it and creates an air flow from upstream to downstream by communicating its rotational energy.
- This propeller 3 is for example made by plastic injection.
- the demolding of the propeller 3 can be done in an axial direction.
- the helix 3 comprises:
- the central hub 11 is hollow and is still called "bowl”.
- This central hub 11 is for example made by molding at the same time as the rest of the helix 3.
- the central hub 11 is rotated by the rotor 7b.
- connection in rotation between the central hub 11 and the rotor 7b is for example obtained by complementary shape between the central hub 11 and the rotor 7b.
- This central hub 11 has:
- upstream and downstream refer to the direction of flow of the air flow produced by the rotation of the helix 3.
- the front wall 17 has a substantially annular shape. This front wall 17 thus has a first internal diameter D, which corresponds to the diameter of the opening 19, and a second outer diameter D 2 .
- the front wall 17 is arranged flush with the front portion 9 of the outer rotor
- the peripheral skirt 23 has a substantially cylindrical shape. It extends from the front wall 17 downstream.
- the blades 13 are connected to this peripheral skirt 23.
- the front wall 17 and the peripheral skirt 23 are for example connected to each other by a rounding 25.
- the inner side wall 21 extends from the front wall 17 downstream.
- This inner lateral wall 21 is substantially cylindrical and delimits the opening 19 of the end wall 17.
- the inner lateral wall 21 defines a receiving housing for the drive motor 5 (see FIGS. 2, 3 and 6 and 7), plus precisely for the external rotor 7b of the motor 5.
- This inner side wall 21 has an outer face and an inner face opposite to the outer face.
- the outer face of the inner side wall 21 is intended to be in contact with the outer face of the side wall 9 "of the outer rotor 7b to the assembly, the inner face of the inner side wall is arranged in facing relation of the peripheral skirt 23 of the hub 11.
- the drive motor 5 is generally mounted coaxially to the central hub
- the ventilation device 1 comprises means for fixing the central hub 11 to the rotor 7b.
- latching means 27 better visible in FIGS. 5, 8 and 9, which make it possible to hang together the internal lateral wall 21 of the central hub 11 and the lateral wall 9 "of the external rotor 7b.
- the latching means 27 are for example carried by the rotor 7b and able to cooperate with the central hub 11.
- the latching means 27 are carried by the rotor 7b and cooperate with means complementary carried by the inner cylindrical wall 21 of the central hub 11.
- the latching means 27 comprise, according to the illustrated embodiment, a ring 29 mounted on the outer rotor 7b; this ring 29 is provided with a plurality of tongs 31 elastically deformable.
- clamps 31 are for example arranged between the magnets of the rotor 7b. This arrangement allows the angular immobilization of the clamps 31.
- the ring 29 is mounted on the rear portion 9 'of the rotor 7b.
- the clamps 31 may be evenly distributed in a predefined angular pitch, as in the example illustrated in FIG. 8.
- Each clamp 31 comprises a first branch 33a and a second branch
- the first branch 33a of a clamp 31 is arranged in abutment with the outer rotor 7b, more precisely in abutment with the inner face of its side wall 9 "(FIG. 4b and 9).
- the second branch 33b for its part, is arranged in abutment against the central hub 11.
- a second branch 33b of a clamp 31 is for example received in a complementary housing 35 of the central hub 11.
- the hub 11 thus comprises for this purpose a plurality of complementary housing 35 to receive the second branches 33b of the plurality of tongs 31.
- These housings 35 are, according to the illustrated example, defined at the level of the internal lateral wall 21 of the central hub 11.
- the clamps 31 thus make it possible to hold together the outer rotor 7b and the central hub 11 by clamping.
- the latching means are, according to the embodiment described, carried on the one hand by the central hub 11 and on the other hand by the clamps 31.
- the housings 35 of the hub 11 respectively comprise at least one snap hook 37, and in addition (see FIGS. 8 and 9) the second branches 33b of the clamps 31 respectively comprise at least one orifice 39 in which an associated hook 37 engages.
- FIG. 9 showing a zoomed portion B of the sectional view of FIG. 5.
- the clipping of the hook 37 in an associated orifice 39 makes it possible to secure the rotor 7b to the central hub 11 and to axially lock the central hub 11 of the propeller 1 with respect to the rotor 7b.
- the snap hooks 37 may be carried by the second branches 33b of the clamps 31 and the housing 35 may comprise a complementary hole in which the hook 37 is engaged.
- the second branches 33b of the clamps 31 may respectively have an end 41 substantially curved. This curved end 41 facilitates the insertion of the second branch 33b into the corresponding housing 35.
- the central hub 11 has a plurality of projections 43.
- the projections 43 extend radially with respect to the axis of rotation A of the propeller 3 and are oriented towards the rotor 7b .
- a projection 43 engages a complementary notch 45 provided on the front portion 9 of the rotor 7b.
- the rotor 7b thus has, in addition to the projections 43, several complementary associated notches 45.
- the notches 45 are better visible in Figures 4a and 4b.
- a reverse construction can be envisaged in which it is the rotor 7b which has one or more projections adapted to engage in an associated notch provided on the front wall 17 of the central hub 11.
- the central hub 11 may have a predefined number of cylindrical bosses (not shown) and the front portion 9 of the rotor 7b may have complementary through holes in which are inserted these cylindrical bosses. Furthermore, the central hub 11 may further have internal ribs 47, visible in FIGS. 3 and 7.
- These internal ribs 47 extend radially with respect to the axis of rotation A of the propeller 3 opposite the blades 13.
- These internal ribs 47 also serve to force the ventilation inside the central hub 11 so as to cool the drive motor 5 of the propeller 3.
- the internal ribs 47 may be evenly spaced at a predefined angular pitch.
- the internal ribs 47 may not be evenly spaced.
- the internal ribs 47 are for example made by plastic injection in the same mold as the rest of the helix 3.
- the internal ribs 47 can be made in one piece with the central hub 11 by molding. The demolding can always be done in an axial direction.
- the inner ribs 47 may be made separately from the rest of the propeller 3 and then be assembled to the propeller 3. Any means for assembling the internal ribs 47 to the central hub 11 may be considered.
- the blades 13 they extend from the peripheral skirt 23 of the central hub 11 to the peripheral ring 15 (see FIGS. 1 to 3 and 6 and 7).
- These blades 13 are generally identical.
- the blades 13 respectively have a leading edge 49 which first comes into contact with the air flow at the rotation of the helix 3, and a trailing edge 51 opposite the leading edge 49.
- the ferrule 15 As for the ferrule 15, it has a cylindrical wall 53, to which the ends of the blades 13 are connected, and which is continued, by a flare 55 (see FIG. 7).
- the propeller 3 is clipped onto the external rotor 7b of the engine 5 via latching means 27 directly assembled on the outer rotor 7b.
- the rotor 7b is equipped with one or more clamps 31 secured to the rotor 7b via the ring 29 mounted on the outer rotor 7b.
- the central hub 11 of the propeller 3 is centered on the outer diameter of the rotor 7b and is inserted into the clamps 31, the latching means at the clamps 31 lock the position of the propeller 3 and also allow driving in rotation of the central hub 11 and thus of the propeller 3, by the external rotor 7b of the engine 5.
- This assembly makes it possible to have a compact solution.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1252593A FR2988338B1 (fr) | 2012-03-22 | 2012-03-22 | Dispositif de ventilation |
PCT/EP2013/056150 WO2013139982A1 (fr) | 2012-03-22 | 2013-03-22 | Dispositif de ventilation |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2828533A1 true EP2828533A1 (fr) | 2015-01-28 |
EP2828533B1 EP2828533B1 (fr) | 2019-04-10 |
Family
ID=48048005
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13714245.1A Active EP2828533B1 (fr) | 2012-03-22 | 2013-03-22 | Dispositif de ventilation |
Country Status (5)
Country | Link |
---|---|
US (1) | US9835175B2 (fr) |
EP (1) | EP2828533B1 (fr) |
CN (1) | CN104641119B (fr) |
FR (1) | FR2988338B1 (fr) |
WO (1) | WO2013139982A1 (fr) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWD160897S (zh) * | 2013-10-09 | 2014-06-01 | 訊凱國際股份有限公司 | 散熱風扇(一) |
TWD160896S (zh) * | 2013-10-09 | 2014-06-01 | 訊凱國際股份有限公司 | 散熱風扇(二) |
US10093152B2 (en) | 2014-06-09 | 2018-10-09 | Dometic Sweden Ab | Shrouded roof vent for a vehicle |
US10400783B1 (en) * | 2015-07-01 | 2019-09-03 | Dometic Sweden Ab | Compact fan for a recreational vehicle |
USD787037S1 (en) * | 2015-07-01 | 2017-05-16 | Dometic Sweden Ab | Fan |
USD832987S1 (en) | 2016-10-13 | 2018-11-06 | Dometic Sweden Ab | Roof fan shroud |
US11027595B2 (en) | 2016-10-13 | 2021-06-08 | Dometic Sweden Ab | Roof fan assembly |
CN108731246B (zh) * | 2018-07-23 | 2023-10-27 | 珠海格力电器股份有限公司 | 一种散热器、控制器及空调 |
FR3115503B1 (fr) * | 2020-10-22 | 2022-11-11 | Valeo Systemes Thermiques | Dispositif de ventilation pour module de refroidissement de véhicule automobile |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2549818A (en) * | 1945-08-23 | 1951-04-24 | Joseph F Joy | Sealing device |
US2965373A (en) * | 1958-04-28 | 1960-12-20 | Thompson Ramo Wooldridge Inc | Leveling valve |
DE4041739A1 (de) * | 1989-12-23 | 1991-06-27 | Papst Motoren Gmbh & Co Kg | Ventilatorlaufrad |
DE59202036D1 (de) * | 1992-05-08 | 1995-06-01 | Jakob Karl | Lüfterrad mit axialem Wurf. |
US5944497A (en) * | 1997-11-25 | 1999-08-31 | Siemens Canada Limited | Fan assembly having an air directing member to cool a motor |
EP1409877A4 (fr) * | 2001-05-31 | 2005-07-20 | Terry L Sydney | Ecrou anti-desserrage pour elements de fixation filetes |
US20040075356A1 (en) * | 2002-10-16 | 2004-04-22 | Sunonwealth Electric Machine Industry Co., Ltd. | Fan rotor |
TW566751U (en) * | 2002-12-30 | 2003-12-11 | Delta Electronics Inc | Rotor assembly |
DE102009003142A1 (de) * | 2009-05-15 | 2010-11-18 | Robert Bosch Gmbh | Lüfter-Rotor-Verbindung für ein Kühlgebläse eines Kraftfahrzeugs |
DE102009050369A1 (de) | 2009-10-22 | 2011-04-28 | Magna Electronics Europe Gmbh & Co.Kg | Axiallüfter |
-
2012
- 2012-03-22 FR FR1252593A patent/FR2988338B1/fr not_active Expired - Fee Related
-
2013
- 2013-03-22 US US14/386,413 patent/US9835175B2/en active Active
- 2013-03-22 CN CN201380024441.9A patent/CN104641119B/zh active Active
- 2013-03-22 WO PCT/EP2013/056150 patent/WO2013139982A1/fr active Application Filing
- 2013-03-22 EP EP13714245.1A patent/EP2828533B1/fr active Active
Non-Patent Citations (1)
Title |
---|
See references of WO2013139982A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP2828533B1 (fr) | 2019-04-10 |
FR2988338A1 (fr) | 2013-09-27 |
US9835175B2 (en) | 2017-12-05 |
WO2013139982A1 (fr) | 2013-09-26 |
CN104641119B (zh) | 2017-05-24 |
US20150078937A1 (en) | 2015-03-19 |
FR2988338B1 (fr) | 2015-05-08 |
CN104641119A (zh) | 2015-05-20 |
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