CN101101006B - Impeller as components of fan for cooling automobile driving device - Google Patents
Impeller as components of fan for cooling automobile driving device Download PDFInfo
- Publication number
- CN101101006B CN101101006B CN2007101040307A CN200710104030A CN101101006B CN 101101006 B CN101101006 B CN 101101006B CN 2007101040307 A CN2007101040307 A CN 2007101040307A CN 200710104030 A CN200710104030 A CN 200710104030A CN 101101006 B CN101101006 B CN 101101006B
- Authority
- CN
- China
- Prior art keywords
- impeller
- pedestal
- hole
- fan
- tubular portion
- 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.)
- Expired - Fee Related
Links
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
- F04D29/26—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
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The present invention relates to an impeller (1) which is one part of a fan for cooling vehicle drive device. The impeller (1) can rotate through a fan driver (10) with a transmission shaft (8), and is arranged with cup-shaped. The impeller comprises a base (3) mounting the impeller (1) in the transmission shaft (8), a tubular section (4) attached to the base (3), and at least two impeller laminas (2) connecting to the tubular section (4) and extending outside, at least an opening (5) is provided in the base (3) and makes possible pressure balance between an outer side of the base and an inner side of the base, where the inner side of the base faces a blower engine. Compared with the existing impeller, the impeller is characterized in that excellent acoustics performance, especially reducing yawp discharge.
Description
Technical field
The present invention relates to as being used for cooling automobile driving device; The impeller of the constituent element of the fan of internal-combustion engine particularly; This impeller can be rotated through the fan drives with transmission shaft, and impeller has cup-shaped basic shape, and this impeller comprises: be used for impeller is fastened on the pedestal on the transmission shaft; The tubular portion of abuts seat reaches at least two and is connected to said tubular portion and outward extending fan blade.
Background technique
Act as a fuel during the burning in the internal-combustion engine heat that the result discharged of heat release, chemical reversion, part is dissipated in cylinder head and the cylinder block via the wall that defines the firing chamber, partly is dissipated in the adjacent assembly and environment via blast air.For the heat load with assembly keeps within limits, the hot-fluid that at least a portion sucks must dissipate once more, maybe must come auxiliary heat to dissipate through addition thereto.Be dissipated to shortage of heat in the environment to produce effective cooling through the internal-combustion engine surface via radiation and transmission of heat, Given this, carry out the cooling of internal-combustion engine targetedly with forced convection usually.
In principle, there is the possibility of cooling off with the form configuration of air cooling or liquid cooling.In air cooling, to internal-combustion engine fan ventilator is provided, through realizing heat dissipation through the air stream on internal-combustion engine surface under the guidance.
On the contrary, liquid cooling requires internal-combustion engine or cylinder head to be equipped with coolant jacket, that is, conduct coolant is arranged in the coolant channel in the cylinder head through cylinder head.At this, the cylinder head that stands high mechanical load and heat load at first reduces its intensity because of the introducing of coolant channel.Secondly, at first heat being conducted to cylinder head surface needn't be in air cooling dissipates.Heat is given freezing mixture in the internal transmission of cylinder head, and freezing mixture is mixed by water and additive usually.At this, transmit freezing mixture through the pump that is configured in the cooling circuit, thereby it is circulated in coolant jacket.The heat that will be transferred to freezing mixture in this way is guided out cylinder head inside, and in as the heat exchanger of cooling circuit constituent element, from freezing mixture, removes heat once more.At this, heat exchanger generally includes fan, i.e. fan ventilator, and its impeller can drive through fan drives, and promptly rotation is configured in impeller on the transmission shaft of fan drives for this reason.
Fan guarantees when static, promptly is in static or only in the low speed of a motor vehicle following time, sufficiently high MAF and other performances can be provided also at automobile.Fan drives is the electric fan motor normally.
Theme of the present invention is the impeller of the fan of the above-mentioned type, is intended to can this fan be used in air cooling and the liquid cooling.
A problem of fan and impeller design is that specifically, transmission shaft is dynamic oscillatory system with the impeller both who is driven.This impeller vibrates, i.e. excited target and vibrating particularly through driver, is said via the transmission shaft excitation exactly and vibrated.
At this, the transmission shaft time that receives goes up the driving moment excitation that changes and vibrates with rotation mode, yet these moments at first will be ignored at this.Moreover, can observe, transmission shaft can cause the impeller swing of rotating with transmission shaft along deflection and other situation of the longitudinal axis.
Vibration not only is regarded as for assembly intensity and component wear very important.Also because of its cause-effect that internal combustion engine noise is produced, and be regarded as day by day unfavorable.
At first, the noise emission of increase is more and more valued environmental problem, because it not only has adverse influence to quality of life; And especially to being exposed to the healthy unfavorable of people under the noise; Given this, announce a large amount of rules, wherein formulated the noise level limit that should keep.At this, most important rules are guilding principles of federal discharging protection method (BImSchG) and EU Committee.
Though the development that noise reduces concentrates on the motor as the main noise source of automobile when beginning; But the design engineer has to consider to cause all noise sources of global noise discharging simultaneously, so that continue to satisfy to the more and more stricter laws and regulations of admissible automobile noise discharging.
At this, the vibration of impeller and transmission shaft had both produced the noise as the result of solid-borne noise radiation, produced the noise that enters into the result of car body as solid-borne noise again.
Yet on the structural design of internal-combustion engine or fan, design engineer's focus is not only noise and is reduced.Make also that increasing trial influences the noise of discharging targetedly and to its modeling.In this context, also relate to sound design.This development is promoted by following discovery: the purchase decision of potential customer when buying automobile influenced by internal-combustion engine or automobile noise also on sizable degree.For example, the driver of sport car has a preference for automobile or the motor that its sound is stressed the motion feature of automobile.
At this, in sound design, be affected as vibration and other factors of the reason of the sound that finally causes discharging.
Summary of the invention
To this background, target of the present invention provides the impeller according to the preamble of claim 1, compares with existing impeller, and this impeller has the acoustic characteristic of optimization, the noise emission that particularly reduces.
This target realizes that by the impeller that can be rotated through the fan drives with transmission shaft this impeller has cup-shaped basic shape, and this impeller comprises:
Be used for impeller is fastened on the pedestal on the transmission shaft,
The tubular portion of abuts seat, and
At least two are connected to said tubular portion and outward extending fan blade,
And this impeller specialization is the following fact:
At least one hole is provided in pedestal, and this hole makes the isostasy between the inboard of the outside and pedestal of pedestal become possibility.
Test shows, the pedestal excited target of existing impeller and vibrating, and serve as similar micropkonic awl basin in this course, this can produce a large amount of noise emissions.
In impeller according to the present invention, we can say that acoustic short circuit can be caused at least one hole of in the impeller pedestal, processing.In the pedestal that vibrates in excited target, the outside and the isostasy of seat surface between the inboard of fan drives of pedestal guaranteed in said at least one hole.This causes the excitation of adjacent air molecule to reduce, thereby the solid-borne noise radiation reduces.
As a result, realized the present invention based on target, the acoustic characteristic with optimization promptly is provided, the impeller of the noise emission that particularly reduces.
Fig. 1 illustrates through example, promptly concerning concrete impeller, and the relation of the sound pressure level db that measures (A) and the rotation speed n of fan drives or transmission shaft.At this; Is that the noise emission of unit is compared with embodiment's's (curve B) of the said impeller of revising according to the present invention noise emission with existing impeller (curve A) with Pascal [Pa]; Amended embodiment's specialization is the following fact: according to the present invention; In pedestal, processed a plurality of holes, the outside of pedestal and the isostasy between the inboard are guaranteed in these holes.
Can be clear that the impeller of configuration makes resonance reduce according to the present invention, this resonance can be in existing impeller (curve A) to be about n=1600 rev/min output shaft rotating speed generation.
Such impeller embodiment is favourable, and a plurality of holes in the base region that preferably is evenly distributed on fan wherein are provided.The pedestal of fan preferably is connected to transmission shaft through screw in the center usually.Because because its principle and can not vibrating, and introduced by rotating driveshaft in this position simultaneously by driving force in the zone of link position for pedestal, so in order to make the impeller rotation, the hole is arranged in link position enough spacing places to be arranged be favourable.
At least one hole can have any required shape, because this function does not rely on the concrete design at least one hole, still depends on the realization of opening in principle, and air can flow to the inboard of pedestal through these openings from the outside of pedestal, or opposite.
More favourable impeller embodiment according to dependent claims will be described below.
Such impeller embodiment is favourable, and at least one strengthening rib wherein is provided on pedestal; This at least one strengthening rib preferably is arranged on the inboard of pedestal.This at least one strengthening rib has increased the intensity of impeller in base region, and only uses a spot of material.The additional materials that is used to form at least one strengthening rib brings acceptable weight to increase in impeller at this.In this considered, the design engineer is to keep the quality of impeller as far as possible little in the design and the target during the configuration of impeller in principle, when particularly impeller is moving assembly.
Such impeller embodiment is favourable, and wherein at least one hole and at least one strengthening rib are spaced apart.Hole or opening should not be provided at pedestal and provide in the zone of strengthening rib for the intensity that increases pedestal.This also can weaken the effect that realizes with strengthening rib with disadvantageous mode, the assembly intensity that promptly increases.
Therefore can know that the isolated such an embodiment of its mesopore and strengthening rib is favourable.
In such embodiment; The rib that wherein on pedestal, provides extends outwardly into the edge of pedestal basically from the center of pedestal; Or in such embodiment; Wherein strengthening rib radially extends basically, if these holes are arranged between the rib and have the direction that is similar to rib, then this will be favourable.At this, such embodiment is favourable, wherein disposes each hole with the mode that is similar to groove.
Such impeller embodiment is favourable, wherein provides and the isolated lid in the outside of pedestal.This lid protection fan drives makes its protect it from corrosion and mechanics influence or infringement, for example the bump of stone.Fan drives is preferably the electric fan motor, is configured in fan base on the inboard in the outside at this.
According to the embodiment of current argumentation, lid is spaced apart with the outside of pedestal, makes at least one Kong Buhui that in pedestal, provides by lid may enclose, and required isostasy can not hinder or inhibition by tegmentum between the outside of pedestal and the inboard.
At this, such impeller embodiment is favourable, wherein between the outside of pedestal and lid spaced away, damping material is provided.As a result,, pedestal produces when vibrating and the air stream of guaranteeing the outside and the isostasy between the inboard of pedestal can slow down and therefore is obstructed.Yet damping material guarantees that also even if be used at least one hole that enough air of isostasy have at first passed to be provided at pedestal, the water of splash can not pass said hole yet.The water of splash possibly damage and for example be configured in the inboard electric drive of pedestal.
Such impeller embodiment is favourable, and wherein tubular portion has at least one reinforcing element.This tubular portion preferably has rotation balanced configuration, particularly cylindrical configuration with respect to the longitudinal axis of impeller, and gives cup-shaped basic shape with pedestal for the core of impeller or impeller.At this, tubular portion is used to hold at least two outward extending fan blade, and at the side opening back to pedestal, this allows under the situation of assembling fan, impeller to be shifted onto on the transmission shaft.At this, fan drives is parked in final rigging position at least in part in tubular portion, thereby tubular portion also serves as the shell of driver.
Test shows, tubular portion is out of shape during fan operation.At this, the change of shape appears in the tubular portion of rotation on its cross section.For example change over ellipse or approaching oval shape for columniform cross section.The change of cross section is obvious especially at the opening end of tubular portion, and reduces along the direction of impeller pedestal.
This alteration of form causes the adjustment of at least two fan blade, and fan blade tilts with respect to the longitudinal axis of impeller or with respect to transmission shaft forward or backward; This adjustment is the function of the relevant position of individual blade.
In order to offset above-mentioned alteration of form, the element that provides at least one to be used to strengthen tubular portion is favourable.Specifically, such embodiment is favourable, and wherein at least one reinforcing element comprises ring, and its shape is corresponding to the initial cross sectional of tubular portion, and this part is reinforced or supported to said ring.
Because alteration of form is obvious especially in the opening side of tubular portion, so such impeller embodiment is favourable, wherein with the as close as possible opening side of at least one reinforcing element, i.e. the opening end of tubular portion configuration.
Because impeller is a moving assembly, so at least during fan operation, it is favourable processing at least one reinforcing element with lightweight material basically.
Description of drawings
Hereinafter, with using a embodiment to describe the present invention in more detail, in the accompanying drawings according to the impeller of Fig. 1 to Fig. 5:
Fig. 1 illustrates relation (curve A) and the sound pressure level of the impeller revised according to the present invention and the relation (curve B) of fan drives rotating speed of sound pressure level and the fan drives rotating speed of existing impeller,
Fig. 2 illustrates first embodiment of impeller with figure in front view,
Fig. 3 illustrates the embodiment of impeller shown in Figure 2 with figure in rear view,
Fig. 4 illustrates the semi-section of impeller along the longitudinal axis of impeller with figure, comprising lid, and
Fig. 5 is in the embodiment of impeller shown in Figure 2 shown in the front view, comprising lid.
Symbol description
1 impeller
2 impeller blades, fan blade
3 pedestals
4 tubular portions
5 holes
The outside of 6 pedestals
The inboard of 7 pedestals
8 transmission shafts
9 lids
10 fan drives
11 strengthening rib
12 damping materials
13 foams
14 reinforcing elements
15 rings
16 screws
17 outer shrouds
18 longitudinal axis
The n rotation speed of the fan
Embodiment
Fig. 1 has been described in more detail in the front in the context that impeller according to the present invention is described, its purpose is clearly to show and is superior to existing impeller part.
Fig. 2 is at front view, and first embodiment of impeller 1 promptly is shown with figure in the view in the outside 6 of pedestal 3.16 holes 5 are provided in pedestal 3 altogether, and these holes make the outside 6 of pedestal 3 and pedestal 3 become possibility towards the isostasy between the inboard of fan drives 10.
In the embodiment shown in Figure 2, as shown in the figure through hole 5 can see at least the part electric motor be used as fan drives 10.
In addition, as shown in Figure 2, impeller 1 is connected to the transmission shaft 8 at pedestal 3 centers, and the connection in this instance is through screw 16 configurations.The longitudinal axis 18 of impeller 1 overlaps with transmission shaft 8.Hole 5 is fully spaced apart with link position, and this is to take into account to introduce driving force and pedestal 3 at the link position place because its principle and can Given this, require the isostasy of this position in the situation of link position place vibration.
Tubular portion 4 gives cup-shaped basic shape with pedestal 3 for the core of impeller 1, and abuts seat 3.In the front view of in Fig. 2, selecting, the cylindrical circumferential surface of tubular portion 4 is promptly extended on the direction of the longitudinal axis 18 almost perpendicular to the drawing plane.At this, tubular portion 4 surrounds fan drives 10 with the mode that is similar to shell.
Tubular portion 4 is used to hold eight outward extending impeller blades 2.
Fig. 3 is at rear view, i.e. the embodiment of impeller 1 shown in Figure 2 shown in the view of the inboard 7 of pedestal 3.The impeller blade 2 that is connected to tubular portion 4 is connected to each other through outer shroud 17 in its outer end, and this ring is used to strengthen impeller 1.
In order to offset the alteration of form of tubular portion 4 when impeller 1 rotation, at the opening end of tubular portion 4 reinforcing element 14 is provided, its form is a stiffening ring 15.This ring 15 is favourable in the configuration of the opening end of tubular portion 4, because the alteration of form that occurs in during the fan operation is obvious especially in this position.Ring 15 is processed by lightweight material.
Can be clear that the strengthening rib 11 on the inboard 7 that is arranged in pedestal 3, strengthening rib extends outwardly into susceptor edges from the pedestal center as hole 5, promptly be essentially radially.Provide the thickened portion of pedestal 3 so that pedestal 3 is further strengthened at the bore region that is used for holding transmission shaft.
Fig. 4 illustrates the semi-section of impeller 1 along impeller 1 longitudinal axis 18 with figure, comprises and covers 9, and this section is positioned between two impeller blades, thereby these blades are invisible in Fig. 4.
Between the outside 6 of pedestal 3 and lid 9 spaced away, damping material 12 is provided, foam 13 serves as damping material 12.The air stream that foam 13 produces when making pedestal 3 vibrations is obstructed, and guarantees the outside 6 of pedestal 3 and the isostasy between the inboard 7.In addition, also stoped the entering of the water of splash.Yet, damping material 12 is provided not necessarily at pedestal 3 with between covering 9.Damping material is not necessarily related with noise damping.
Fig. 5 illustrates the embodiment's of impeller 1 shown in Figure 2 front view, comprises being in the lid 9 of assembling condition.Identical label is used for identical assembly, therefore can be with reference to the explanation that combines Fig. 2 to make.
Claims (11)
1. a conduct is used for the impeller (1) of constituent element of the fan of cooling automobile driving device, and impeller (1) can be rotated through the fan drives (10) with transmission shaft (8), and impeller (1) has cup-shaped basic shape, and this impeller comprises:
Be used for impeller (1) is fastened on the pedestal (3) on the transmission shaft (8),
The tubular portion (4) of abuts seat (3),
At least two are connected to said tubular portion (4) and outward extending impeller blade (2), and lid (9);
Wherein, At least one hole (5) is provided in pedestal (3); Hole (5) makes the outside (6) of pedestal (3) and pedestal (3) become possibility towards the isostasy between the inboard (7) of fan drives (10); Said lid (9) is spaced apart with the outside (6) of pedestal (3), makes said hole (5) can not sealed by said lid (9).
2. impeller as claimed in claim 1 (1) is characterized in that said automotive proplsion is an internal-combustion engine.
3. according to claim 1 or claim 2 impeller (1) is characterized in that said pedestal (3) has at least one strengthening rib (11).
4. impeller as claimed in claim 3 (1) is characterized in that, said at least one strengthening rib (11) is arranged on the inboard (7) of pedestal (3).
5. impeller as claimed in claim 3 (1) is characterized in that, said at least one hole (5) is spaced apart with said at least one strengthening rib (11).
6. like above-mentioned claim 1 or 2 described impellers (1), it is characterized in that said lid (9) protects said fan drives (10) to make its protect it from corrosion and mechanics influence allow simultaneously by said hole (5) required isostasy to be provided with said tubular portion (4).
7. impeller as claimed in claim 6 (1); It is characterized in that the enough air that between the outside (6) of pedestal (3) and lid (9), provide damping material (12) and said damping material (12) to be configured to allow to be used for isostasy pass said hole (5) and prevent that simultaneously the water of splash from passing said hole (5).
8. impeller as claimed in claim 7 (1) is characterized in that, said damping material (12) is foam (13).
9. like above-mentioned claim 1 or 2 described impellers (1), it is characterized in that, at least one reinforcing element (14) is provided on tubular portion (4).
10. impeller as claimed in claim 9 (1) is characterized in that, said at least one reinforcing element (14) comprises and is configured in the ring (15) of tubular portion (4) on the opening side of pedestal (3).
11. impeller as claimed in claim 9 (1) is characterized in that, said at least one reinforcing element (14) is processed by lightweight material.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE200610023417 DE102006023417A1 (en) | 2006-05-17 | 2006-05-17 | Blower wheel for cooling e.g. internal combustion engine, has blades connected with tubular section, and opening provided in base and makes possible pressure balance between outer side and inner side of base |
| DE102006023417.0 | 2006-05-17 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101101006A CN101101006A (en) | 2008-01-09 |
| CN101101006B true CN101101006B (en) | 2012-06-27 |
Family
ID=38607972
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007101040307A Expired - Fee Related CN101101006B (en) | 2006-05-17 | 2007-05-16 | Impeller as components of fan for cooling automobile driving device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN101101006B (en) |
| DE (1) | DE102006023417A1 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102345645B (en) * | 2010-08-02 | 2014-12-31 | 建准电机工业股份有限公司 | Fan base with pressure relief holes |
| DE102011105451A1 (en) * | 2011-06-22 | 2012-12-27 | Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Würzburg | Fan of a motor vehicle |
| FR2988337B1 (en) * | 2012-03-22 | 2015-05-08 | Valeo Systemes Thermiques | VENTILATION SYSTEM |
| US9157362B2 (en) | 2012-05-23 | 2015-10-13 | Denso International America, Inc. | Pressure release slot for fan noise improvement |
| CN103573717B (en) * | 2012-07-24 | 2018-06-12 | 德昌电机(深圳)有限公司 | Fan and its impeller |
| DE102014219023A1 (en) | 2014-09-22 | 2016-03-24 | Mahle International Gmbh | Axial fan for conveying cooling air, in particular for an internal combustion engine of a motor vehicle |
| DE102016012801A1 (en) | 2016-10-26 | 2018-04-26 | Man Truck & Bus Ag | axial fan |
| CN112096655B (en) * | 2020-08-12 | 2022-05-27 | 东风博泽汽车系统有限公司 | Heat dissipation hub structure and heat dissipation fan formed by same |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3303995A (en) * | 1964-09-08 | 1967-02-14 | Rotron Mfg Co | Fan motor cooling arrangement |
| GB1418236A (en) * | 1972-08-14 | 1975-12-17 | Walker Mfg Co Gmbh | Plastics fan wheel |
| EP0096255A1 (en) * | 1982-06-01 | 1983-12-21 | Siemens Aktiengesellschaft | Electric motor-driven axial fan, especially for motor vehicle cooling fans |
| US5193981A (en) * | 1991-01-25 | 1993-03-16 | Robert Bosch Gmbh | Fan wheel with cup shaped hub |
| JP3015697B2 (en) * | 1995-01-11 | 2000-03-06 | 株式会社東芝 | Radiation energy spectrum measurement device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0315697A (en) * | 1989-06-12 | 1991-01-24 | Matsushita Refrig Co Ltd | Impeller of axial blower |
-
2006
- 2006-05-17 DE DE200610023417 patent/DE102006023417A1/en not_active Withdrawn
-
2007
- 2007-05-16 CN CN2007101040307A patent/CN101101006B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3303995A (en) * | 1964-09-08 | 1967-02-14 | Rotron Mfg Co | Fan motor cooling arrangement |
| GB1418236A (en) * | 1972-08-14 | 1975-12-17 | Walker Mfg Co Gmbh | Plastics fan wheel |
| EP0096255A1 (en) * | 1982-06-01 | 1983-12-21 | Siemens Aktiengesellschaft | Electric motor-driven axial fan, especially for motor vehicle cooling fans |
| US5193981A (en) * | 1991-01-25 | 1993-03-16 | Robert Bosch Gmbh | Fan wheel with cup shaped hub |
| JP3015697B2 (en) * | 1995-01-11 | 2000-03-06 | 株式会社東芝 | Radiation energy spectrum measurement device |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102006023417A1 (en) | 2007-11-22 |
| CN101101006A (en) | 2008-01-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101101006B (en) | Impeller as components of fan for cooling automobile driving device | |
| US6484596B2 (en) | Crankshaft starter-generator | |
| CN100520008C (en) | Booster impeller assembly | |
| US20100229543A1 (en) | Device for influencing an exhaust gas flow | |
| JP2009052549A (en) | Airplane turbomachine fan having balancing flange hidden by air intake cone | |
| WO2005098213A1 (en) | Cooling device | |
| US6588381B2 (en) | Internal combustion engine combination with direct camshaft driven coolant pump | |
| JP2004232626A (en) | Engine cooling fan with improved air current characteristics | |
| US20080286093A1 (en) | Cooler Fan Hub | |
| US7047914B2 (en) | Internal combustion engine combination with direct camshaft driven coolant pump | |
| US6863035B2 (en) | Internal combustion engine combination with direct camshaft driven coolant pump | |
| HU193683B (en) | Vibration damper for damping rotating masses | |
| US10563751B2 (en) | Cooling apparatus for continuously variable transmissions | |
| JP5761086B2 (en) | vehicle | |
| JP4586364B2 (en) | Radiator cooling fan mounting structure | |
| US6168527B1 (en) | Coupling combination of a compensating coupling and a torsionally elastic coupling | |
| US11852168B2 (en) | Fan hub isolator | |
| CN117203414A (en) | Damper cooling structure of internal combustion engine | |
| JP2006307666A (en) | Fan device | |
| CN218581879U (en) | Working implement | |
| JP2007270778A (en) | Fan noise reduction device for air-cooled engine | |
| JPH0544469A (en) | Fan shroud device | |
| KR101267476B1 (en) | structure of mounting a shroud on carrier | |
| KR20040094143A (en) | A Fan Shroud Structure for a Car | |
| KR200211330Y1 (en) | Pan |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120627 Termination date: 20150516 |
|
| EXPY | Termination of patent right or utility model |