CN109114019A - axial fan - Google Patents

axial fan Download PDF

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Publication number
CN109114019A
CN109114019A CN201810569316.0A CN201810569316A CN109114019A CN 109114019 A CN109114019 A CN 109114019A CN 201810569316 A CN201810569316 A CN 201810569316A CN 109114019 A CN109114019 A CN 109114019A
Authority
CN
China
Prior art keywords
fan
connection strap
axial fan
blast
axial
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.)
Pending
Application number
CN201810569316.0A
Other languages
Chinese (zh)
Inventor
T·莫泽
F·哈泽
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BorgWarner Inc
Original Assignee
BorgWarner Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by BorgWarner Inc filed Critical BorgWarner Inc
Publication of CN109114019A publication Critical patent/CN109114019A/en
Pending legal-status Critical Current

Links

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
    • F04D29/66—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
    • F04D29/667—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by influencing the flow pattern, e.g. suppression of turbulence
    • 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
    • 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
    • F04D29/26—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
    • F04D29/328—Rotors specially for elastic fluids for axial flow pumps for axial flow fans with unequal distribution of blades around 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
    • F04D29/26—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
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/32—Rotors specially for elastic fluids for axial flow pumps
    • F04D29/38—Blades
    • F04D29/384—Blades characterised by form
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/32—Rotors specially for elastic fluids for axial flow pumps
    • F04D29/38—Blades
    • F04D29/388—Blades characterised by construction
    • 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
    • F04D29/522—Casings; Connections of working fluid for axial pumps especially adapted for elastic fluid pumps
    • 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
    • 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
    • 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
    • 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
    • F04D29/666—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by means of rotor construction or layout, e.g. unequal distribution of blades or vanes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2240/00—Components
    • F05D2240/20—Rotors
    • F05D2240/30—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor
    • F05D2240/304—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor related to the trailing edge of a rotor blade
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2250/00—Geometry
    • F05D2250/10—Two-dimensional
    • F05D2250/18—Two-dimensional patterned
    • F05D2250/184—Two-dimensional patterned sinusoidal
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2250/00—Geometry
    • F05D2250/60—Structure; Surface texture
    • F05D2250/61—Structure; Surface texture corrugated
    • F05D2250/611—Structure; Surface texture corrugated undulated

Abstract

The present invention relates to a kind of axial fan (1), have a fixed fan hub (2)；With a cyclic annular fixed frame (3), which wraps up the excircle end of fan hub (2) and is connected by least one connection strap (4,5,6) with fan attachment hub (2)；With a blast fan (8), the blast fan and blast fan driving device (9), which are formed, to be drivingly connected and has a rotary fan impeller boss (10) and multiple impeller vanes (11), the blade separately includes a rear edge (12), to this, the rear edge (12) is towards at least one connection strap (4,5,6), it is characterized in that, the profile of connection strap (4,5,6) is sinusoidal, and preferably the rear part edge (12) are at least zigzag in partial region (13).

Description

Axial fan
Technical field
The present invention relates to a kind of axial fans of preamble according to claim 1.
Background technique
This kind of axial fans has been carried out disclosure in 10 2,010 039 219 A1 of DE.For this kind of axial For fan, the noise for inhibiting to be formed when fan is blown by air simultaneously is also needed other than reaching maximum pneumatic efficiency.
To reach the target, 10 2,010 039 219 A1 of DE illustrates a kind of fan, which is particularly suitable as machine Motor vehicle engine cooling fan, for the fan, the blast fan of fixed frame package rotation, which includes quilt The fan blade of fan drum package, in this regard, fan drum and frame constitute a gap.In addition, according to patent specification The invention is equipped with a secondary fan, which inhibits by the reflux of blast fan conveying air.The secondary fan example The building block that such as can be blast fan, the secondary fan leaf in a kind of preferred embodiment by being mounted on fan drum Piece composition.
The shortcomings that structure essentially consists in needs relatively high manufacture to spend when arranging and designing secondary fan, this Outside, implementing under frame of the invention experiments have shown that need further noise be minimized.
Summary of the invention
The task of foregoing invention is, creates a kind of axial fan of type described in claim 1 preamble, the axial direction Further aerodynamic optimization is may be implemented near minimum situation in noise by fan.
The task is solved by the feature of claim 1.
It is corresponding to it, defines a kind of axial fan according to the present invention, which has a fan attachment hub, the fan Hub is fixed frame package in circumferential end, which is connected by least one connection strap with fan hub.Blast fan has one The blast fan driving device (such as motor) of a rotatable fan leaf wheel hub, the fan leaf wheel hub and viscous creep clutch It is connected or is directly driven by internal combustion engine.In addition, the blast fan has multiple impeller vanes, which is fixed on wind On fan blade hub, and the blast fan guard ring of circumferential end is usually extended radially outwardly to by blast fan hub, in this regard, blast fan Blade can be both fixed on fan hub, can also be fixed on blast fan guard ring.
In order to realize target according to the present invention, the profile of connection strap can be sinusoidal wave shape.Pass through the sine of connection strap The aerodynamic optimization of component may be implemented in wavy profile, which can especially reduce air drag, furthermore also can simplify manufacture Process, while may insure the structural stability of connection strap.The aerodynamic optimization can minimize noise.
Subclaims include that the present invention is advantageously improved form.
Particularly preferred scheme is that the rear edge of impeller vane is at least zigzag in partial region.
By combining at least partly saw-toothed rear edge and sinusoidal connection strap profile, blast fan can be reduced The pressure fluctuation amplitude of blade in the process of running, this can further minimize noise.
In a kind of particularly preferred embodiment, multiple connection straps furthermore can be equipped with, which each all has just Chordal shaped profile.In addition, multiple connection straps can be divided into multiple connection strap groups (such as three connection straps respectively), the connection strap group phase It is mutually spaced apart to be arranged between fan hub and fan frame.
Relatively narrow connection strap can be used when constituting connection strap group.In this regard, also can choose wider connection strap, Especially there is mutually isostructural connection strap.
In a kind of particularly preferred embodiment, sinusoidal profile has sine by connection strap front end or entire connection strap Shape structure is realized.If " forward edge " can also be referred to as by being somebody's turn to do " front end " using relatively narrow connection strap.
The front end or forward edge are axially facing impeller vane based on axial fan.The protrusion of sinusoidal profile Portion axially extends, and than the recessed portion of the sinusoidal profile between lug boss closer to blast fan.
In order to further improve anti-acoustic capability, connection strap has asymmetrical structure, in another preferred embodiment, even The air stream surface of narrow bars tilts from inside to outside in terms of airflow direction.
As described above, connection strap structure according to the present invention can optimize its geometric modeling, in particular for realizing more Low air drag.
In principle, the impeller vane of blast fan has uniform interval, that is, is in uniform angle interval peace It comes on fan leaf wheel hub.
But impeller vane do not allow be spaced can also advanced optimize its anti-acoustic capability.
In a kind of particularly preferred embodiment, the jagged part rear edge of impeller vane peace adjacent with frame Row.But in principle, entire rear edge can have jagged structure.
Further pneumatic and noise reduction effect can be by the forward edge of connection strap and the non-parallel knot of impeller vane Structure is realized.
The sinusoidal profile of single connection strap preferably has at least amplitude of 1mm, particularly preferably has at least vibration of 1.5mm Width.The axial direction that the amplitude is parallel to axial fan measures, and explanation is the single lug boss being made of sinusoidal profile Highly.
The sinusoidal profile of single connection strap preferably has at least two, particularly preferably has at least three lug bosses, There is corresponding recessed portion between lug boss.
Detailed description of the invention
Other details of the invention, feature and advantage are shown in the explanation of the following example with reference to the accompanying drawings.
Wherein:
Fig. 1 shows the see-through view of axial fan according to the present invention,
Fig. 2 shows according to the axial fan according to the present invention of Fig. 1 in the portion of blast fan, frame and fan hub area Divide perspective diagram,
Fig. 3 shows the portion of a kind of blast fan of variant of axial fan according to the present invention, frame and fan hub area Divide perspective diagram.
Specific embodiment
Fig. 1 shows a kind of axial fan according to the present invention 1, which has fixed 2 He of fan hub The fixed frame 3 of one excircle section including fan hub 2.Frame 3 is, for example, ring-type, and has a peviform outer profile, Fixed tongue is installed on outer profile, three fixed tongues are shown in FIG. 1, and identify by reference to label 21,22 and 23.
Fan hub 2 and frame 3 can be interconnected by a connection strap, wherein shown in Fig. 1 is especially excellent It include multiple connection straps in the embodiment of choosing, wherein three connection straps are identified using reference label 4,5 and 6.Such as Fig. 1 institute Show, be equipped with amount to 18 such connection straps 4,5 and 6 in this embodiment, respectively constitute three connection strap groups 14,15,16,17, 18 or 19.In 3 connection strap groups 14 to 19, connection strap 4,5 and 6 mutually it is close it is adjacent is arranged, it is thin such as Fig. 1 schematic diagram Shown in portion, three connection strap groups are respectively with uniform angle frequent placements between fan hub 2 and frame 3.
In addition, having a blast fan 8 according to the axial fan 1 of Fig. 1, which drives by fan appropriate and fills It sets 9 to be driven, which is indicated in Fig. 1 with dotted line ring.The fan drive device 9 is for example arranged in fixed In fan hub 2.
Furthermore blast fan 8 has a rotatable fan leaf wheel hub 10, arrange have multiple wind on the fan leaf wheel hub Flabellum impeller blade, impeller vane represents all impeller vanes with reference label 11 and is identified in Fig. 1.In Fig. 1 Shown in embodiment, impeller vane extends to outside into blast fan guard ring 20 parcel-like from fan leaf wheel hub 10, Its thin portion is shown in the schematic diagram of Fig. 1.
As shown in Fig. 1 and 2 combination, it is sinusoidal that the wheel of connection strap 4,5 and 6, which is crossed, wherein shown in Fig. 2 is particularly preferred Embodiment in, sinusoidal structure is formed by the sinusoidal curve of connection strap 4,5 and 6 forward edges 7.
In addition, especially as shown in Fig. 2, the rear edge 12 of impeller vane 11 is sawtooth at least at partial region 13 Shape.In the embodiment shown in Figure 2, serrated portion subregion 13 is connected at frame, and via the part area of rear edge 12 Domain extends along the direction of fan hub 2.But in principle it is also possible that entire rear edge 12 is laciniation.
As further shown in Figure 2, connection strap 4,5,6 has air stream surface, wherein identifies air stream surface according to connection strap 4 24 represent all air stream surfaces.Airflow direction on connection strap sees that air stream surface 24 tilts from inside to outside.
In the embodiment shown in Fig. 1 and 2, all impeller vanes are spaced apart from each other identical distance and are arranged.
Fig. 3, which is shown, replaces relatively narrow connection strap in Fig. 1 and 2 using broader connection strap 4.According to Fig. 3, connection strap 4 front end 7 has sinusoidal profile.The front end 7 transits to air stream surface with the radius R that air-flow optimizes.Radius R is preferably at least For 3mm, especially preferably at least 5mm.
Impeller vane 11 can also be configured with mutually different interval, at least in some embodiments, the spy Point can further improve the anti-acoustic capability of axial fan 1 according to the present invention.
In addition to above-mentioned written disclosure of the invention illustrates, the supplemental content of open explanation can refer to showing for Fig. 1 and 2 of the present invention It is intended to.

Claims (11)

1. axial fan (1)
There is a fan attachment hub (2)；
There is a cyclic annular fixed frame (3), which wraps up the excircle end of fan hub (2) and connect by least one Item (4,5,6) is connected with fan attachment hub (2)；
There is a blast fan (8)
The blast fan and blast fan driving device (9), which are formed, to be drivingly connected,
The blast fan has a rotary fan impeller boss (10),
The blast fan has multiple impeller vanes (11), which separately includes a rear edge (12), in this regard, The rear edge (12) is towards at least one connection strap (4,5,6), which is characterized in that
The profile of connection strap (4,5,6) is sinusoidal, in addition, the rear part edge (12) are at least sawtooth in partial region (13) Shape.
2. axial fan according to claim 1, which is characterized in that be equipped with multiple connection straps (4,5,6), wherein each Connection strap has a sinusoidal profile.
3. axial fan according to claim 2, which is characterized in that multiple connection straps (4,5,6) are respectively divided into mutually The connection strap group (14-19) of arrangement spaced apart.
4. according to claim 1 to 3 its any one of described in axial fan, which is characterized in that connection strap (4,5,6) has One front end (7), the front end are sinusoidal structure.
5. according to claim 1 to 4 its any one of described in axial fan, which is characterized in that connection strap (4,5,6) has Unsymmetric structure.
6. according to claim 1 to 5 its any one of described in axial fan, which is characterized in that connection strap (4,5,6) has One air stream surface (24), the air stream surface tilt from inside to outside in terms of airflow direction.
7. according to claim 1 to 6 its any one of described in axial fan, which is characterized in that aerodynamic optimization connection strap (4, 5,6) geometry is to realize lower windage.
8. according to claim 1 to 7 its any one of described in axial fan, which is characterized in that impeller vane (11) Identical distance is spaced apart from each other to be arranged.
9. according to claim 1 to 7 its any one of described in axial fan, which is characterized in that impeller vane (11) Different spaced distance is arranged.
10. according to claim 1 to 9 its any one of described in axial fan, which is characterized in that jagged partial region (13) with frame (3) arranged adjacent.
11. according to claim 4 to 10 its any one of described in axial fan, which is characterized in that connection strap (4,5,6) Front end (7) is arranged in a non-parallel manner with impeller vane (11).
CN201810569316.0A 2017-06-23 2018-06-05 axial fan Pending CN109114019A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017210632 2017-06-23
DE102017210632.8 2017-06-23

Publications (1)

Publication Number Publication Date
CN109114019A true CN109114019A (en) 2019-01-01

Family

ID=64568038

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201810569316.0A Pending CN109114019A (en) 2017-06-23 2018-06-05 axial fan

Country Status (3)

Country Link
US (1) US20180372120A1 (en)
CN (1) CN109114019A (en)
DE (1) DE102018114896A1 (en)

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Publication number Publication date
US20180372120A1 (en) 2018-12-27
DE102018114896A1 (en) 2018-12-27

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Application publication date: 20190101