EP1008761A2 - Stator de ventilateur - Google Patents
Stator de ventilateur Download PDFInfo
- Publication number
- EP1008761A2 EP1008761A2 EP99124390A EP99124390A EP1008761A2 EP 1008761 A2 EP1008761 A2 EP 1008761A2 EP 99124390 A EP99124390 A EP 99124390A EP 99124390 A EP99124390 A EP 99124390A EP 1008761 A2 EP1008761 A2 EP 1008761A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- stator
- fan
- elements
- arm elements
- arm
- 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- Withdrawn
Links
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 230000000694 effects Effects 0.000 description 4
- 125000006850 spacer group Chemical group 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 238000004378 air conditioning Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000004907 flux Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
Images
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
- F04D29/40—Casings; Connections of working fluid
- F04D29/52—Casings; Connections of working fluid for axial pumps
- F04D29/54—Fluid-guiding means, e.g. diffusers
- F04D29/541—Specially adapted for elastic fluid pumps
- F04D29/542—Bladed diffusers
- F04D29/544—Blade shapes
Definitions
- the present invention relates to axial flow fans and in particular at a stator device to modify the air flow coming of the fan.
- stator devices in association with such axial flow fans, which stator are intended to straighten the air flow coming from the fan.
- Such stator devices are static arrangements of blades or other elements which "break” the rotation components of the movement of the air and which deflect the air towards a path of more axial flow.
- Axial flow fans are available in engine cooling systems inside of what is called a nozzle which guides the air from or towards a vehicle heat exchanger such as a radiator and which can also guide air towards or from a condenser of a system of vehicle air conditioning.
- the movement of the vehicle causes the air to pass to through the radiator and / or the condenser of the air conditioning but under certain circumstances it is necessary to cause air movement extra and it's the movement of the fan that do that. It is desirable to use a fan high efficiency because of the need to reduce fuel consumption as much as possible and also because of the lack of fan efficiency tend to increase noise ambient, which is not desirable in vehicles modern.
- Modern motor fans are driven by electric motors, and these motors themselves are supported inside an opening the nozzle by a number of arms, usually three, which come from the peripheral wall of the nozzle up to a support ring which is used to support engine.
- such supports include a number of elements additional radially extending which are of curved cross section, or otherwise configured as axial direction so as to straighten in a way general movement of air from the fan.
- a first object of the present invention is at least partially remedy the disadvantages of the prior art.
- Another object of the present invention is increase the total efficiency of a ventilator using a stator device improved, thereby allowing the use of a smaller motor to provide the same level of cooling from the fan system.
- Another object of the present invention is to reduce the weight of the fan assembly.
- a stator device for an axial flow fan comprising a plurality of stator arms from a peripheral wall defining an opening for the air flow from the fan, said arms extending radially inward to a fan motor support member, wherein the stator device has one end axially rear as well as one end axially front, the rear end, in use, being disposed further from the fan, and the front end being closer to the fan, the plurality of arms stator comprising a plurality of first elements of stator arms and a corresponding plurality of second stator arm elements, the first stator arm elements being arranged axially towards the rear of the second stator arm elements, a front edge region of the first arm elements stator and a rear edge region of the second stator arm elements thereby defining a slot between these.
- the first and second stator arm elements have a cross section curve.
- the first and the second stator arm elements exhibit greater thickness in their respective front regions than in their respective back regions.
- a flow fan device comprising an axial flow fan arranged in a fan nozzle in spaced relationship with a vehicle heat exchanger, the nozzle having a internal peripheral wall defining an opening for the air flow from the fan and the motor fan being attached to a support portion of fan, the system further comprising a stator device from said wall and extending up to said support portion, the stator comprising a plurality of first elements of stator arm and a corresponding plurality of second stator arm elements, the first stator arm elements being arranged axially in rear of the second stator arm elements, one front edge region of the first arm elements of stator and a rear edge region of the second stator arm elements thereby defining a slot between these.
- the first and second stator arm elements have a cross section curve.
- the first and the second stator arm elements exhibit greater thickness in their respective front regions than in their respective back regions.
- a stator device for an axial flow fan having one end axially rear as well as one end axially front, the rear end, in use, being disposed further from the fan and the front end being closer to the fan, the stator comprising a plurality of first elements of stator arm, a plurality of second elements of stator arm, and a plurality of third elements of stator arms, the first arms of stator being arranged axially behind the second stator arm elements and the third stator arm elements being arranged axially in front of the second stator arm elements, slots being thereby defined so much between the first and the second than between the second and the third stator arm elements.
- an outer ring 1 of a fan support device has an inner peripheral wall 2 which defines an opening 3 for an air flow coming from a fan axial flow (see Figure 2).
- the support ring 1 can be part of a fan nozzle or can be a separate structure attached to a nozzle. Rings of supports of this type are well known in the art and are usually made of plastic molded.
- the support ring is generally circular.
- a fan motor support ring 5 is found inside the ring.
- the support ring of fan motor is attached to the support ring exterior 1 via a plurality (7 here) spacers 6 which fulfill the function additional to form stator arm elements used to straighten the air flow from the fan.
- the air flow is further rectified by rectifying elements of the air flow 8 interposed between the arm elements of stator 6.
- rectifying elements are good known in the art.
- the fan motor support ring 5 is represented as C-shaped, but it could form a complete circle. It is used to hire and supporting a fan motor (not shown) on the shaft from which the hub of a fan is fixed - see Figure 2.
- a fan 100 consists of a hub portion generally circular 110 having an outer wall on which is fixed a plurality of blades 120. Counter-clockwise rotation of the hub (shown by arrow B) forces the air to move in the general direction indicated by arrow A. However, the movement of the fan blades causes the air and also forces him to adopt a movement going generally counterclockwise.
- a stator 50 is made up of a plurality of stator arm elements 10.11.
- each of the stator arm elements 10, 11 is generally of curved cross-section and that each of the stator arm elements 10, 11 tapers to from a respective front edge region 13, 14 to a respective axially rear edge region 15, 16.
- the first stator arm element 10 is arranged axially behind the second element of stator arm 11 so that the edge region front 13 of the first stator arm element defines a slot in cooperation with the axially rear edge of the second stator element 11.
- the slot has a substantial circumferential extent B, but, as this is shown to have little or no axial extent C.
- each pair of stator arm elements 10.11 forms a substantial lift plan configuration
- the slots 12, which are located near the edge of leak (in the last 50% of the rope length of the stator) create a space in the cross section of the lift plan so as to inject some air flow from the pressure side D of the stator to the suction side E.
- the slot could have a width of at most 20% of the length of the rope.
- the overall direction of the slot should form an angle between 0 and 90 ° relative to the inclination profile section local.
- the total effect of injecting an air flow at from the pressure side to the suction side is to reduce drag by preventing flow to separate too soon from the profiled surface. This therefore allows a more pronounced curvature, and therefore a better re-direction of the air flow. Energy kinetics of the rotating fan acting on the air that is moved by the fan is so more efficiently transformed into static pressure.
- FIG. 5 a second variant of the stator is shown, in which three stator arm elements 21,22,23 are provided for each stator arm.
- Each of the elements of stator arm defines a respective slot 24, 25 with the element which precedes it axially in order to create an effect similar to that shown in Figure 3.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
Claims (9)
- Dispositif de stator pour un ventilateur à flux axial comprenant une pluralité de bras de stator (6) issus d'une paroi périphérique définissant une ouverture pour le flux d'air émanant du ventilateur (100), lesdits bras s'étendant radialement vers l'intérieur jusqu'à un élément de support de moteur de ventilateur (5), dans lequel le dispositif de stator présente une extrémité axialement arrière ainsi qu'une extrémité axialement avant, l'extrémité arrière, en service, étant disposée plus loin du ventilateur, et l'extrémité avant étant disposée plus près du ventilateur, caractérisé en ce que la pluralité de bras de stator comprenant une pluralité de premiers éléments de bras de stator et une pluralité correspondante de deuxièmes éléments de bras de stator, les premiers éléments de bras de stator étant disposés axialement vers l'arrière des deuxièmes éléments de bras de stator, une région de bord avant des premiers éléments de bras de stator et une région de bord arrière des deuxièmes éléments de bras de stator définissant de ce fait une fente (12)entre ceux-ci.
- Dispositif de stator de la revendication 1, caractérisé en ce que les premiers et les deuxièmes éléments de bras de stator (10,11) ont une section transversale courbe.
- Dispositif de stator de la revendication 1, caractérisé en ce que les premiers et les deuxièmes éléments de bras de stator (10,11) présentent une plus grande épaisseur dans leurs régions avant respectives que dans leurs régions arrière respectives.
- Dispositif de ventilateur à flux axial comprenant un ventilateur à flux axial (100) disposé dans une buse de ventilateur en relation espacée avec un échangeur de chaleur de véhicule, la buse présentant une paroi périphérique interne (2) définissant une ouverture (3) pour le flux d'air venant du ventilateur et le moteur du ventilateur étant fixé à une portion de support du ventilateur (5), le système comprenant en outre un dispositif de stator (6) issu de ladite paroi et s'étendant jusqu'à ladite portion de support, caractérisé en ce que le dispositif de stator comprend une pluralité de premiers éléments de bras de stator et une pluralité correspondante de deuxièmes éléments de bras de stator, les premiers éléments de bras de stator étant disposés axialement en arrière des deuxièmes éléments de bras de stator, une région de bord avant des premiers éléments de stator et une région de bord arrière des deuxièmes éléments de stator définissant de ce fait une fente (12) entre ceux-ci.
- Dispositif de ventilateur de la revendication 4, caractérisé en ce que les premiers et les deuxièmes éléments de bras de stator (10,11) ont une section transversale courbe.
- Dispositif de ventilateur de la revendication 4, caractérisé en ce que les premiers et les deuxièmes éléments de bras de stator (10,11) présentent une plus grande épaisseur dans leurs régions avant respectives que dans leurs régions arrière respectives.
- Dispositif de stator pour un ventilateur à flux axial, présentant une extrémité axialement arrière ainsi qu'une extrémité axialement avant, l'extrémité arrière, en service, étant disposée plus loin du ventilateur et l'extrémité avant étant disposée plus près du ventilateur, caractérisé en ce que le dispositif de stator comprend une pluralité de premiers éléments de bras de stator, une pluralité de deuxièmes éléments de bras de stator, et une pluralité de troisièmes éléments de bras de stator, les premiers éléments de bras de stator étant disposés axialement en arrière des deuxièmes éléments de bras de stator et les troisièmes éléments de bras de stator étant disposés axialement en avant des deuxièmes éléments de bras de stator, des fentes (24,25) étant de ce fait définies tant entre les premiers et les deuxièmes qu'entre les deuxièmes et les troisièmes éléments de bras de stator.
- Dispositif de stator de la revendication 7, caractérisé en ce que chacun desdits éléments de bras de stator (21,22,23) a une section transversale courbe.
- Dispositif de stator de la revendication 7, caractérisé en ce que chacun desdits éléments de bras de stator (21,22,23) présente une plus grande épaisseur dans ses régions avant respectives que dans ses régions arrière respectives.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US206623 | 1994-03-07 | ||
US09/206,623 US6206635B1 (en) | 1998-12-07 | 1998-12-07 | Fan stator |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1008761A2 true EP1008761A2 (fr) | 2000-06-14 |
EP1008761A3 EP1008761A3 (fr) | 2001-01-31 |
Family
ID=22767209
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99124390A Withdrawn EP1008761A3 (fr) | 1998-12-07 | 1999-12-07 | Stator de ventilateur |
Country Status (2)
Country | Link |
---|---|
US (1) | US6206635B1 (fr) |
EP (1) | EP1008761A3 (fr) |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4697501B2 (ja) * | 2000-07-25 | 2011-06-08 | ミネベア株式会社 | 整流翼 |
US6896095B2 (en) | 2002-03-26 | 2005-05-24 | Ford Motor Company | Fan shroud with built in noise reduction |
TW546443B (en) * | 2002-09-27 | 2003-08-11 | Delta Electronics Inc | Axial flow fan with a plurality of segment blades |
US6827547B2 (en) | 2003-01-29 | 2004-12-07 | Borgwarner Inc. | Engine cooling fan having improved airflow characteristics |
US20040150632A1 (en) * | 2003-01-31 | 2004-08-05 | Clapper Edward O. | Ballpoint stylus |
TWM246685U (en) * | 2003-09-17 | 2004-10-11 | Hon Hai Prec Ind Co Ltd | Heat sink assembly |
US20060093476A1 (en) * | 2004-10-29 | 2006-05-04 | Stanley Gavin D | Fan stator |
TWI298092B (en) * | 2005-08-12 | 2008-06-21 | Delta Electronics Inc | Fan and blade thereof |
TWI280324B (en) * | 2005-12-23 | 2007-05-01 | Delta Electronics Inc | Fan and fan housing thereof |
CN101571147B (zh) * | 2008-04-28 | 2012-07-25 | 富准精密工业(深圳)有限公司 | 散热风扇 |
US8591170B1 (en) * | 2010-05-26 | 2013-11-26 | James D. Rawls | Directed force turbine device |
DE102010053798A1 (de) * | 2010-12-08 | 2012-06-14 | Rolls-Royce Deutschland Ltd & Co Kg | Strömungsmaschine - Schaufel mit hybrider Profilgestaltung |
EP2971614B1 (fr) * | 2013-03-14 | 2020-10-14 | Rolls-Royce Corporation | Amortisseur subsonique |
ITMI20130791A1 (it) * | 2013-05-14 | 2014-11-15 | Cofimco Srl | Ventilatore assiale |
USD805107S1 (en) | 2016-12-02 | 2017-12-12 | U.S. Farathane Corporation | Engine fan shroud |
FR3081383B1 (fr) * | 2018-05-22 | 2023-10-20 | Valeo Systemes Thermiques | Dispositif de ventilation d’un vehicule automobile |
IT201900004059A1 (it) * | 2019-03-20 | 2020-09-20 | R E M Holding S R L | Pala con flap |
FR3108147B1 (fr) * | 2020-03-13 | 2022-02-25 | Valeo Systemes Thermiques | Bras de maintien pour armature de support |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE573799C (de) * | 1930-12-05 | 1933-04-05 | Johanna Langhans Geb Ulrich | Beschaufelung fuer Gas- und Dampfturbinen |
FR982027A (fr) * | 1943-06-01 | 1951-06-04 | Perfectionnement aux compresseurs axiaux | |
FR1346934A (fr) * | 1963-02-14 | 1963-12-20 | Gen Dynamics Corp | Turbo-machine à écoulement mixte |
FR2083742A5 (fr) * | 1970-03-23 | 1971-12-17 | Cit Alcatel | |
US4548548A (en) * | 1984-05-23 | 1985-10-22 | Airflow Research And Manufacturing Corp. | Fan and housing |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2313413A (en) * | 1940-07-02 | 1943-03-09 | John R Weske | Axial flow fan |
US3173604A (en) * | 1962-02-15 | 1965-03-16 | Gen Dynamics Corp | Mixed flow turbo machine |
US4946348A (en) * | 1989-02-14 | 1990-08-07 | Airflow Research & Manufacturing Corporation | Centrifugal fan with airfoil vanes in annular volute envelope |
US5342167A (en) * | 1992-10-09 | 1994-08-30 | Airflow Research And Manufacturing Corporation | Low noise fan |
-
1998
- 1998-12-07 US US09/206,623 patent/US6206635B1/en not_active Expired - Lifetime
-
1999
- 1999-12-07 EP EP99124390A patent/EP1008761A3/fr not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE573799C (de) * | 1930-12-05 | 1933-04-05 | Johanna Langhans Geb Ulrich | Beschaufelung fuer Gas- und Dampfturbinen |
FR982027A (fr) * | 1943-06-01 | 1951-06-04 | Perfectionnement aux compresseurs axiaux | |
FR1346934A (fr) * | 1963-02-14 | 1963-12-20 | Gen Dynamics Corp | Turbo-machine à écoulement mixte |
FR2083742A5 (fr) * | 1970-03-23 | 1971-12-17 | Cit Alcatel | |
US4548548A (en) * | 1984-05-23 | 1985-10-22 | Airflow Research And Manufacturing Corp. | Fan and housing |
Also Published As
Publication number | Publication date |
---|---|
US6206635B1 (en) | 2001-03-27 |
EP1008761A3 (fr) | 2001-01-31 |
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