EP2951413A1 - Gebläse für ein kraftfahrzeug - Google Patents
Gebläse für ein kraftfahrzeugInfo
- Publication number
- EP2951413A1 EP2951413A1 EP13795741.1A EP13795741A EP2951413A1 EP 2951413 A1 EP2951413 A1 EP 2951413A1 EP 13795741 A EP13795741 A EP 13795741A EP 2951413 A1 EP2951413 A1 EP 2951413A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- nozzle
- flow
- sheath
- blower
- compressed air
- 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- Withdrawn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
Classifications
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00457—Ventilation unit, e.g. combined with a radiator
-
- 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
- F01P5/00—Pumping cooling-air or liquid coolants
- F01P5/02—Pumping cooling-air; Arrangements of cooling-air pumps, e.g. fans or blowers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
- F04D17/08—Centrifugal pumps
- F04D17/10—Centrifugal pumps for compressing or evacuating
-
- 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
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/663—Sound attenuation
- F04D29/665—Sound attenuation by means of resonance chambers or interference
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
- F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
- F04F5/14—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being elastic fluid
- F04F5/16—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being elastic fluid displacing elastic fluids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
- F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
- F04F5/54—Installations characterised by use of jet pumps, e.g. combinations of two or more jet pumps of different type
-
- 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
Definitions
- the present invention relates to a blower for a motor vehicle, in particular to a blower for a Schuster and / or an engine of a motor vehicle,
- the invention further relates to a method for ventilating a motor vehicle and to an arrangement of a blower and a heat exchanger of a motor vehicle.
- Motor vehicle fans are used, for example, in the engine radiator.
- a fan is provided with rotating rotor blades and leads outside air for cooling the engine water and / or the condenser of the air conditioner.
- the air thus heated can be used simultaneously for heating the vehicle cabin.
- an asymmetrical division of the rotors and an optimized flow profile of the rotor blades are used in the prior art.
- it is a problem in the prior art that such fans develop a significant operating noise during operation that is perceived as unpleasant in the vehicle cab.
- Another problem is that the large rotor blades over time accumulate dirt and difficult to clean from the outside.
- a blower for a motor vehicle in particular for a heating air conditioner and / or an engine of a motor vehicle, the blower comprising:
- a compressed air generator for generating compressed air
- a sheath flow nozzle for ejecting the compressed air as a sheath flow, the supply air, in particular the sheath flow nozzle via a supply air supply supplied supply air, entrains in the form of a central flow.
- Another aspect of the invention relates to a method for ventilating a motor vehicle, in particular for ventilating a Walkersterones and / or an engine of the motor vehicle, comprising the steps:
- the blower according to the invention can be used for example as a car front fan, which cools the radiator of the engine water and / or the condenser of the air conditioner.
- a car front fan which cools the radiator of the engine water and / or the condenser of the air conditioner.
- the majority of the supplied supply air is discharged as a central flow from the fan, wherein the central flow is not driven by rotor blades, but is entrained by the sheath current.
- the acceleration of air by rotor blades for much of the Noise is responsible, whereas the inventive entrainment of the central flow causes a much lower noise.
- By a certain amount of accelerated sheath flow while a multiple of air volume can be entrained as a central stream.
- a similar principle has proved to be very efficient, for example with the Dyson fan or with jet engines.
- the sheath flow nozzle in this case not only has a punctiform opening, but that the opening is designed according to the invention typically linear or iinienförmig with interruptions, so that a suitable for entrainment of the central flow sheath flow can be generated.
- the contour of the bypass nozzle must not be closed here, it is also possible that open line sections are provided. A possibly lower fluidic efficiency is accepted.
- the blower according to the invention essentially operates without rotor blades.
- the compressed air generator can be realized in the form of a compressor, wherein rotor blades are used in certain embodiments in the compressor. Since the compressor is advantageously used only for generating the compressed air for the sheath flow, many of the disadvantages of using rotor blades can nevertheless be avoided, since the rotor blades in the compressor are substantially smaller than the main rotor blades in a conventional blower.
- the compressed air generator is a compressor or similar device that is powered by electrical power or (indirectly) by a gasoline engine.
- compressed air it is also conceivable according to the invention for compressed air to generate the jacket current to be generated from the airstream at high speed of the vehicle.
- the central stream can be routed as usual via heating heat exchanger or evaporator of the air conditioner, supplied by outdoor or circulating air of the vehicle cabin as supply air.
- the supply air can also be partially or completely supplied from the inside air of the vehicle cabin.
- the supply air supply may supply supply air from outside the motor vehicle.
- the supply air supply can also supply air to the compressed air generator.
- the compressed air generator is supplied separately with air.
- the compressed air of the sheath flow nozzle from the compressed air generator through a line with a muffler, in particular a pipe muffler, is supplied.
- vibrations of the compressed air generator e.g. a compressor
- the high pressure and the high speed of the air accelerated by the compressed air generator it can be at the supply of compressed air to a
- the supply air supply has a first line, in particular a first tube or a first tube, and the supply of compressed air to
- Sheath flow nozzle via a second conduit, in particular a second tube or a second conduit takes place, wherein the second conduit is at least partially disposed within the first conduit.
- the outflow opening of the bypass nozzle has an oval, in particular a circular, or a rectangular contour.
- the outflow opening as a gap between two substantially parallel Surface is formed, in particular wherein the outflow opening is interrupted by arranged between the parallel surfaces spacers.
- the outflow opening can therefore be designed in the form of an outflow gap.
- the substantially parallel surfaces of the sheath flow nozzle can be formed completely parallel or they can in other
- Embodiments of the invention may be arranged parallel or at most +/- 3 ° deviating from the parallelism.
- the outflow opening can thereby
- a wall in particular a wall oriented parallel to the outflow direction, to be arranged in the outflow direction behind the outflow opening, on the surface of which the jacket flow moves along.
- the sheath flow due to the Coanda effect can be attracted to the wall of the sheath flow nozzle and flow along the wall.
- a particularly uniform sheath flow can be achieved. This allows u.a. a particularly low noise level.
- bypass flow nozzle is arranged so that the bypass flow is directed to particularly heated locations in the engine compartment, in particular an exhaust manifold or a turbocharger.
- the turbocharger cooling can be done by charge air supplied supply current and sheath current.
- a special regulation for example via valves
- the cooling requirement of the turbocharger is accompanied by available charge air.
- About oil separation between charge air and sheath connection should be done by charge air supplied supply current and sheath current.
- blower according to the invention can thus be carried out a targeted reduction of operating temperatures at critical points in the engine compartment. It can be combined in the engine compartment and a plurality of fans according to the invention, wherein the compressed air supply to the individual sheath flow nozzles can be controlled individually. The sheath flow and the entrained central flow can thus be adapted to the respective required cooling capacity.
- the fan has at least a first bypass nozzle for ejecting the compressed air as a first bypass flow, which entrains a first central flow and at least a second bypass nozzle for ejecting the compressed air as the second bypass flow, wherein the second Sheath current from the sheath current of the first
- Sheath flow nozzle entrained entrains first central stream.
- the first and the second at least
- Sheath flow nozzles can be supplied via the same compressed air generator or several compressed air generators can be provided, which supply the individual sheath flow nozzles separately with compressed air.
- Sheath flow nozzles with a driving sheath flow are also usable according to the invention for suction - combinable with supply air nozzles without driving
- a series connection of several sheath flow nozzles can e.g. be useful in the heating air conditioner, where sometimes set over the sometimes longer paths of the actual supply air, a significant pressure drop, which reduces the desired sheath flow.
- Sheath flow nozzle has a plurality of nozzle areas for generating a plurality of individual sheath currents, wherein the pressures of the individual sheath currents are individually controllable.
- the orientation of the total flow (consisting of the individual sheath flows and the entrained individual central flows) can thus be specifically controlled. This eliminates the need for mechanical blinds and it is still a continuous adjustment of the overall emission direction possible.
- a temporal variance of the individual jacket currents can support comfort-oriented ventilation concepts that supplement static flow conditions with occasional stronger influxes of the vehicle occupants, for example, with slightly cooler air.
- the radiation direction of the sheath flow nozzle can be controlled similar to an adjustable blind, if the individual sections of the nozzle contour different
- cabin air conditioning comfort programs can be presented (e.g., palm-fringed effects of occasional cooler onslaught of vehicle occupants without causing health risks from steady-state flow, such as air travel).
- the sheath flow nozzle has a maximum diameter between 10 and 100 cm, in particular between 25 and 75 cm, and / or the outflow opening has a length between 50 and 200 cm and a width between 1 mm and 20 mm, in particular between 2 mm and 10 mm.
- the maximum diameter e.g. to look at the length of the longer half-axis in an elliptical shape.
- the volume flow of the central flow is at least 5 times as large, in particular at least 10 times as great as the volume flow of the
- the fan is arranged in the direction of travel of the motor vehicle immediately before and / or after the heat exchanger.
- the first sheath flow nozzle of the blower is arranged on one side of the heat exchanger and the second sheath flow nozzle of the blower on the other side of the heat exchanger.
- Sheath-flow nozzles (eg in the direction of travel to the rear) add up their effect, so that the external air mass flow at the heat exchangers is increased.
- Fig. 1 is a schematic representation of a blower according to a
- FIG. 2 is a schematic representation of a cross section of a conduit according to the invention for a central flow and a sheath flow, which are fed to a sheath flow nozzle and
- 3A to 3C are schematic representations of the contours of various inventive sheath flow nozzles
- the blower 10 shown schematically in Figure 1 has a sheath flow nozzle 12, a compressed air generator 14 in the form of a compressor and a central flow supply 20 in the form of a first line.
- the compressor 14 is connected via a second line 22 to the bypass nozzle 12.
- a pipe muffler 16 Connecting path between the compressor 14 and the bypass nozzle 12 is a pipe muffler 16 is provided.
- the compressor 14 sucks a first air flow 30, compresses it and feeds it via the line 22 of the sheath flow nozzle to form the sheath stream 34.
- the bypass flow 34 is ejected over the entire contour of the bypass nozzle 12 at high speed. As a result, the supplied through the line 20 supply air 32 is entrained with the generated in the bypass nozzle 12 sheath stream 34 and ejected as accelerated central stream 36.
- the supply of the central stream via a longer line 20 In other embodiments of the invention, no such conduit is provided, that is, the bypass nozzle 12 draws their supply air 32 directly from the ambient air of the vehicle.
- a protective grid (not shown in Figure 1) may be provided to prevent dirt or other undesirable objects from being drawn into the vehicle.
- FIG. 2 shows the cross section of a line 40 of a blower according to a second embodiment of the invention.
- the line 40 serves to supply the supply air for the central stream.
- a thinner line 42 for supplying the compressed air for the sheath flow is arranged in the line 40.
- Both the conduit 40 and the inner conduit 42 may be formed as a rigid tube or as a flexible hose. Due to the increased pressure in the inner Line 42 guided compressed air, the inner conduit preferably has a particular stability, for example, by an increased hose thickness on.
- Fig. 3A shows a bypass nozzle with a closed oval contour.
- the generated sheath flow 34a thus also has a closed oval contour.
- the central flow 36a is entrained.
- Fig. 3B shows a sheath flow nozzle with an oval contour
- Interruptions 35 is interrupted.
- the generated sheath flow 34b thus has an interrupted oval contour.
- a central flow 36b is entrained with an oval outer contour.
- a central flow is entrained, which is guided within the sheath current.
- Fig. 3C they are also
- Fig. 3C there is shown a shroud nozzle wherein line-shaped orifices of the nozzle generate sheath streams 34c entraining a central stream 36c, which is partially guided within and partially out of the center stream.
- line-shaped orifices of the nozzle generate sheath streams 34c entraining a central stream 36c, which is partially guided within and partially out of the center stream.
- Sheath flow nozzle may be provided.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Thermal Sciences (AREA)
- Air-Conditioning For Vehicles (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Jet Pumps And Other Pumps (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102013100998.0A DE102013100998A1 (de) | 2013-01-31 | 2013-01-31 | Gebläse für ein Kraftfahrzeug |
PCT/EP2013/074568 WO2014117886A1 (de) | 2013-01-31 | 2013-11-25 | Gebläse für ein kraftfahrzeug |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2951413A1 true EP2951413A1 (de) | 2015-12-09 |
Family
ID=49667142
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13795741.1A Withdrawn EP2951413A1 (de) | 2013-01-31 | 2013-11-25 | Gebläse für ein kraftfahrzeug |
Country Status (4)
Country | Link |
---|---|
US (1) | US20150369112A1 (de) |
EP (1) | EP2951413A1 (de) |
DE (1) | DE102013100998A1 (de) |
WO (1) | WO2014117886A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102014017774B4 (de) | 2014-12-02 | 2018-05-17 | Audi Ag | Verfahren zur Belüftung eines Raums und Belüftungssystem |
FR3075111B1 (fr) * | 2017-12-20 | 2020-07-31 | Valeo Systemes Thermiques | Dispositif de ventilation a tubes pour systeme de ventilation, de chauffage et/ou de climatisation |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE437470A (de) * | ||||
CH306141A (fr) * | 1945-02-19 | 1955-03-31 | Coanda Henri | Dispositif éjecteur. |
US3909037A (en) * | 1974-05-22 | 1975-09-30 | Olin Corp | Safety device with coanda effect |
DE3031059A1 (de) * | 1980-08-16 | 1982-03-18 | Klöckner-Humboldt-Deutz AG, 5000 Köln | Brennkraftmaschine mit einem retarder |
US4519423A (en) * | 1983-07-08 | 1985-05-28 | University Of Southern California | Mixing apparatus using a noncircular jet of small aspect ratio |
JPH0791975B2 (ja) * | 1987-10-16 | 1995-10-09 | 義明 角田 | 内燃機関内部空気冷却機構 |
USH1159H (en) * | 1990-06-08 | 1993-04-06 | The United States Of America As Represented By The Secretary Of The Navy | Portable pneumatic aircraft fuel tank air eductor |
US5343711A (en) * | 1993-01-04 | 1994-09-06 | Virginia Tech Intellectual Properties, Inc. | Method of reducing flow metastability in an ejector nozzle |
US5295171A (en) * | 1993-04-15 | 1994-03-15 | General Electric Company | Combined jet pump and internal pump rercirculation system |
SE528162C2 (sv) * | 2005-10-27 | 2006-09-19 | Xerex Ab | Ejektor med monteringshylsa, samt monteringsförfarande |
GB2447677B (en) * | 2007-03-21 | 2011-11-16 | Honeywell Normalair Garrett | Jet pump apparatus |
JP5118604B2 (ja) * | 2008-10-29 | 2013-01-16 | 本田技研工業株式会社 | エンジン駆動発電装置 |
-
2013
- 2013-01-31 DE DE102013100998.0A patent/DE102013100998A1/de not_active Ceased
- 2013-11-25 WO PCT/EP2013/074568 patent/WO2014117886A1/de active Application Filing
- 2013-11-25 US US14/764,615 patent/US20150369112A1/en not_active Abandoned
- 2013-11-25 EP EP13795741.1A patent/EP2951413A1/de not_active Withdrawn
Non-Patent Citations (2)
Title |
---|
None * |
See also references of WO2014117886A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE102013100998A1 (de) | 2014-07-31 |
WO2014117886A1 (de) | 2014-08-07 |
US20150369112A1 (en) | 2015-12-24 |
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Legal Events
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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Extension state: BA ME |
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DAX | Request for extension of the european patent (deleted) | ||
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: ZIPP, WALTER Owner name: STINNER, THOMAS |
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RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: ZIPP, WALTER Inventor name: STINNER, THOMAS |
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17Q | First examination report despatched |
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