CN101617127B - Ventilator wheel, system and transmission line - Google Patents

Ventilator wheel, system and transmission line Download PDF

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Publication number
CN101617127B
CN101617127B CN200880005556.2A CN200880005556A CN101617127B CN 101617127 B CN101617127 B CN 101617127B CN 200880005556 A CN200880005556 A CN 200880005556A CN 101617127 B CN101617127 B CN 101617127B
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China
Prior art keywords
draught fan
air
fan impeller
fan blade
lead ring
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CN200880005556.2A
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CN101617127A (en
Inventor
S·莱昂纳德
S·萨尔
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SEW Eurodrive GmbH and Co KG
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SEW Eurodrive GmbH and Co KG
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    • 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
    • F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
    • F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for 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
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
    • F04D29/288—Part of the wheel having an ejecting effect, e.g. being bladeless diffuser
    • 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

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Jet Pumps And Other Pumps (AREA)

Abstract

A ventilator wheel is provided with a convex air guiding ring (12) which forms, together with a base body (10) of the ventilator wheel and ventilator blades (11), nozzle-type air channels. Said air channels extend along the periphery in irregular angular positions.

Description

Draught fan impeller, system and transmission line
Technical field
The present invention relates to a kind of draught fan impeller, a kind of system and a kind of transmission line.
Summary of the invention
The objective of the invention is to, improve a kind of blower fan, thereby improve cooling capacity and reduce environmental pressure.
According to the present invention, described purpose is by according to the described draught fan impeller of feature that provides in claim 1, realize according to the described system of feature that provides in claim 26 and according to the described transmission line of the feature that provides in claim 29.
The key character of the present invention of draught fan impeller is, first fan blade has first angle displacement with respect to the first adjacent fan blade on circumferential direction, described first fan blade has second angle displacement with respect to the second adjacent fan blade in the opposite direction, and wherein said first angle displacement is less than described second angle displacement.Alternatively, each (blower fan) blade comprises the angle displacement value of at least two different stages with respect to the sequence on circumferential direction at the angle displacement of fan blade the most adjacent on the circumferential direction.Therefore provided a kind of simple design proposal, wherein fan blade needn't be arranged regularly.Be that in this advantage fan blade produces periodic excitation, the main frequency component of this excitation is compared low with the situation when all angle displacements are onesize.Half of frequency component when particularly described frequency component is up to the fan blade regular arrangement.
In a kind of favourable improvement project, fan blade is on circumferential direction, particularly along the circumferentially spaced apart certain distance brokenly of draught fan impeller.Preferably, be provided with a quantity n fan blade, wherein at draught fan impeller when its axis evenly rotates, fan blade forms an activation sequence through the fixing reference direction in a space time, the cycle time of this activation sequence is greater than n/one of draught fan impeller rotation period.Particularly preferably, described cycle time is more than or equal to half of draught fan impeller rotation period.Especially particularly preferably, equal the rotation period of draught fan impeller described cycle time.Therefore can realize the favourable big reduction of main frequency value of the caused vibrational excitation of fan blade and the reduction of especially particularly preferred maximum possible.Therefore the subjective at least noise jamming that reduces the environment to external world that causes owing to fan operation is because the frequency of noise can migrate under the threshold of hearing or moves to wherein in the scope of human auditory to the receptance reduction of noise.In addition, can reduce the excitation that caused by fan blade and the vibration that caused by the operation of transmission device between resonance effect.
In a kind of favourable design proposal, each air passageways defines by fan blade, an air lead ring and/or a matrix at least, and wherein the cross section of air passageways has a minimum value in trend from inside to outside.Therefore air passageways forms and has the jet pipe effect.Described jet pipe has advantageously caused directed cooling air stream.
In a kind of favourable improvement project, the minimum value of the cross section of air passageways causes by the minimum value of the spacing between matrix and the air lead ring, particularly by causing at the cross section of the matrix with axial plane figure/sectional shape and minimum value with the spacing between the cross section figure of air lead ring of axial plane.Draught fan impeller advantageously comprises matrix, fan blade and air lead ring, wherein matrix has a frusto-conical region, section of per at least two fan blades, frusto-conical region and a section of air lead ring form an air passageways that radially extends respectively, and its cross section is radially being walked upwards to have a minimum value.Be in this advantage, can make draught fan impeller simply because the geometrical property of air passageways particularly described nozzle shape can utilize the boundary of air lead ring and matrix to make simply and control.In addition, the matrix of draught fan impeller also has the air guiding function except it keeps function.Can save parts thus.
In a kind of favourable design proposal, the cross section of air lead ring side within it forms protrudingly and forms in its outside recessedly, and particularly so formation makes the wall thickness substantial constant.The constant revolution that depends on the manufacturing tolerances of manufacturing technology and depend on employed blower fan at this wall thickness.Therefore the external shape of air lead ring is followed the interior shape of air lead ring basically, and also uses the favourable shape that after a little while forms the air lead ring at material simultaneously.Be in this advantage, use small quantity of material probably for the air lead ring, thereby make its moment of inertia as far as possible little.
In a kind of favourable improvement project, matrix has a frusto-conical region, the air lead ring can be with one heart meets (einbeschreibbar) in mathematics awl in so, make the air lead ring in first and second axial region, touch this mathematics awl, and be provided with minimum separable in the 3rd axial region between air lead ring and mathematics awl, wherein the 3rd axial region is arranged between described first axial region and described second axial region, per at least two fan blades, section of frusto-conical region and a section of air lead ring form an outward extending air passageways respectively.Be the described air passageways that utilizes constructing technology and the simple geometrical shape of controlling of manufacturing technology that jet pipe shape can be provided in this advantage.
In a kind of favourable improvement project, be formed with at least two different air passagewayss at draught fan impeller.Preferably, each air passageways can be described by physical dimension, and the physical dimension sequence of air passageways is irregular sequence when blower fan rotates.Particularly preferably, the physical dimension of each air passageways be the fan blade of angle between the fan blade of described limited boundary or limited boundary with respect to the angle of a reference direction, this reference direction is fixed with respect to blower fan.Selectively, the physical dimension of each air passageways is the angular orientation of center of gravity or the midplane of air passageways, or a direction that is labeled out of air passageways is with respect to the angle of a reference direction fixing with respect to blower fan.Therefore provided the simple geometric eigenvalue, can be with reference to described eigenvalue in order to design consideration draught fan impeller of the present invention.
In a kind of favourable improvement project, the center of gravity that is formed by all fan blades is in the center of blower fan.Be in this advantage, when reducing noise is loaded, avoided support and material owing to the uneven extra duty that causes.
In a kind of favourable improvement project, the maximal axial extension of fan blade is greater than the maximal axial extension of air lead ring.
In a kind of favourable improvement project, the maximal axial extension of fan blade is greater than the twice of the maximal axial extension of air lead ring.Be in this advantage, realized the cooling air radially or the outflow of side direction.Therefore draught fan impeller can or have in the General System of blower fan at different transmission devices and uses.
In a kind of favourable improvement project, the maximum radial dimension of fan blade is greater than the smallest radial size of air lead ring.Be in this advantage, form big air outlet slit, the cooling air can be directed on the housing to be cooled through described air outlet slit.
In a kind of favourable improvement project, fan blade is no more than a radius scope earth's axis to withdrawal in the suction side, has particularly withdrawn greater than 1/3rd of the maximal axial extension of fan blade.Be in this advantage, can load onto blower hood with little spacing with respect to draught fan impeller, wherein can avoid the noise that is produced by fan blade at intakeport or air inlet place.
In a kind of favourable improvement project, each fan blade has a symmetrical plane, and the rotation axis of draught fan impeller preferably is in the described symmetry plane.Therefore formed the changeable draught fan impeller of sense of rotation in simple mode, and wherein cooled off air and always flow through air passageways along identical direction.
In a kind of favourable design proposal, the radial dimension of matrix is less than the external diameter of draught fan impeller, particularly than the internal diameter little at least percent 15 of air lead ring.Form favourable geometric proportion thus, the cooling air can flow especially effectively under this geometric proportion.
In a kind of favourable improvement project, air passageways forms an air outlet slit respectively, and described air outlet slit comprises the subregion of radial directed and axial orientation.Therefore draught fan impeller can be on different transmission devices, particularly in the tight the place ahead of shell body wall or in bevel gear lid (Kegelradtopf) driving.
A kind of system, particularly the key character of the present invention of transmission device is, described system comprises a blower fan, described blower fan has draught fan impeller and a blower hood of a band fan blade, wherein said blower hood surrounds described draught fan impeller at least in part, described blower hood has a zone that has a plurality of axial air entrances, wherein said fan blade has constant space with blower hood in first subregion in described zone with a plurality of axial air entrances, and in described second subregion with a plurality of axial air entrances, the spacing of described fan blade and blower hood is greater than the constant space in described first subregion, particularly greater than the twice of this constant space.Therefore realize particularly advantageous liquidity ratio and avoid on blower hood owing to the fan blade that scanned produces noise.
In a kind of favourable improvement project, fan blade radially extends beyond described zone with a plurality of axial air entrances.Therefore can particularly advantageously suck the cooling air.
In a kind of favourable improvement project, draught fan impeller is arranged on one of transmission device, particularly on the input shaft.Therefore can omit for the independent motor that drives draught fan impeller.
The key character of the present invention of transmission line of--described modification comprises that respectively one has blower fan and at least one gear stage of draught fan impeller--is to have a plurality of modification, draught fan impeller is installed on the input shaft of bevel gear level in first modification, and draught fan impeller is installed on the input shaft of cylindrical gears level in second modification.Preferably, in first modification, air can radially be directed by air passageways, and in second modification, air can by air passageways with one with respect to the angle of radial direction and with one with respect to the angle of axial direction, particularly the axial plane medium dip of draught fan impeller in the axis of draught fan impeller be directed.Be in this advantage, reduced the component variation in the structural series, and improved the variation possibility that is used for installing blower fan.
In a kind of favourable improvement project, in first modification, the shell body wall of transmission device partly covers the subregion of the axial orientation of the air outlet slit of air passageways, particularly this air outlet slit.Therefore, the cooling air advantageously can be by guiding around gear mechanism housing radially.Cause good cooling capacity thus.
Other advantages provide in the dependent claims.The present invention is not limited to the feature combination of claim.For those skilled in the art, particularly propose and/or from compared with prior art proposing of task from task, obtain the possible scheme of other suitable combinations of the feature of claim and/or individual event claim feature and/or specification and/or accompanying drawing.
Description of drawings
Set forth the present invention in more detail by accompanying drawing now:
Fig. 1 is the view of seeing draught fan impeller from the place ahead,
Fig. 2 is the view of seeing the draught fan impeller Fig. 1 from the rear,
Fig. 3 is the front view of the draught fan impeller among Fig. 1,
Fig. 4 is the sectional drawing that draught fan impeller is cut open along the axial plane that marks with A-A in Fig. 3,
Fig. 5 is the view with transmission device of mounted blower fan,
Fig. 6 is the side view with the transmission device among Fig. 5 of draught fan impeller of the blower hood of incision and incision.
Reference numerals list:
10 matrixes
11 fan blades
12 air lead rings
13 wheel hubs
20 fit encircles
21 applying ribs
22 gauge ribs radially
23 outside gauge ribs
30 sections
31 first fan blades
32 second fan blades
33 first lead rings
34 second lead rings
35 frusto-conical region
36 reference directions
W1, w2, w3 angle
40 withdrawal portions
41 radial openings
42 conical surfaces
43,44 cut off circle
50 transmission devices
51 blower hoods
52 frameworks
53
54 middlewares
55 air inlets
56 air outlet slits
57 blower fans
60 gaps
61 bevel gears lid
Embodiment
Fig. 1 illustrates a draught fan impeller for the transmission device blower fan.Described draught fan impeller comprises at least one matrix with wheel hub 13 10, fan blade 11 and an air lead ring 12.
Draught fan impeller is provided for being installed on the axle of transmission device.This is inserted into described axle with wheel hub 13 goes up to be connected with this force closure ground.
Draught fan impeller drives by described axle.Said axle driving fan blade 11, producing roughly thus, air radially or that outwards point to obliquely flows.The direction that air flows and the sense of rotation of draught fan impeller are irrelevant, because each fan blade 11 has a symmetrical plane, the rotation axis of draught fan impeller is in the described symmetry plane.
Matrix 10, air lead ring 12 and per two adjacent fan blades 11 form air passageways respectively, guide air to flow by described air passageways.
Fig. 2 illustrates the back side of the draught fan impeller among Fig. 1.The applying ring 20 of matrix 10 and the applying rib 21 of each fan blade 11 are in the common plane.Therefore the operation of draught fan impeller can be close on the shell body wall of transmission device and implement, wherein said plane parallel in the shell body wall of transmission device and with respect to this shell body wall with little spacing setting.
Draught fan impeller with matrix, fan blade and lead ring is preferably made integratedly, particularly manufactures casting/pouring piece of being made by aluminium or plastics, wherein under the situation of using plastics, plastics be preferably designed to especially can conduct electricity to avoid electrostatic charging.
In a kind of optional embodiment, draught fan impeller is formed from steel.
Under installment state (as shown in FIG. 2), radially outside gauge rib 23 and the shell body wall of gauge rib 22, air lead ring 12 form an opening, and described air flows and radially outwards guided by described opening.Therefore air lead ring 12 does not extend at the whole axial length of draught fan impeller and particularly fan blade 11.
Fig. 3 illustrates the front view according to the draught fan impeller of Fig. 1.Be furnished with fan blade 11 at matrix 10, wherein fan blade 11 has a symmetrical plane respectively, and described symmetry plane comprises the rotation axis of draught fan impeller.Therefore except the inclined-plane on fan blade 11 surfaces, fan blade 11 is substantially perpendicular to the zone 35 annular, truncated cone shape of matrix 10.
Each fan blade 11 is arranged with angle w1 respectively about the reference direction 36 fixing with respect to blower fan.Fan blade 11 is arranged brokenly: particularly the difference of per two angle w1 not can be the integral multiple of a basic value.Therefore reduce the resonant excitation that caused by fan blade 11, particularly reduced the frequency of resonant excitation.
The irregular layout of fan blade caused, fan blade 11 through one that radially extend, spatially produce an excitation during fixing reference direction, the time history of this excitation has the cycle time consistent with the rotation period of draught fan impeller.If mark the angle w1 of i fan blade with w1.i, wherein i is less than or equal to the total n (in embodiment 9) of fan blade 11, so by angle w1.1, and w1.2, w1.3,, w1.n, w1.1, w1.2, w1.3 ... continuous sequence definition the ordered series of numbers of one-period property, its minimum period length just is n.
In a kind of optional embodiment, the Cycle Length of described ordered series of numbers is greater than 1, is preferably greater than 2, is preferably greater than n/2 or numeral (n-1)/2 especially, and under the situation of above-mentioned back, it provides an integer in described possibility in the back.Therefore when fan operation, and under the situation of fan blade regular arrangement, to compare, main vibrational excitation takes place in lower frequency band.
In a kind of optional embodiment, draught fan impeller has a plane of mirror symmetry, and preferably, the rotation axis of draught fan impeller is included in the described plane of mirror symmetry.
The external diameter of matrix 10 is chosen to be significantly less than the external diameter of draught fan impeller in Fig. 3.Therefore preferably, the external diameter of matrix 10 is draught fan impeller and is 2/3rds of the external diameter of air lead ring 12 that particularly preferably, the external diameter of matrix 10 has reduced 10 to percent 20 with respect to the internal diameter of air lead ring 12.Therefore can realize the favourable liquidity ratio for blower fan.
Air lead ring 12 comprises first lead ring 33 and second lead ring 34, the two itself separately by circlewise and the design of truncated cone shape ground.The cone angle of second lead ring 34 is chosen to the cone angle greater than first lead ring 33.
The frusto-conical region 35 of each first fan blade 31, second fan blade 32, matrix 10 by the folded portion's section 30 of described first fan blade and second fan blade and air lead ring 12 form an air passageways respectively by these two fan blades 31,32 folded portion's sections 37, cross described air passageways at operation space-time air-flow.
In these air passagewayss of Xing Chenging each all has a subtended angle or angle displacement w2 like this, namely between the fan blade 31,32 of described limited boundary that is the angle between two immediate adjacent fan blades, each in these air passagewayss also has the midplane of air passageways about the angle w3 of reference direction 36.Therefore subtended angle w2 is drawn by the difference of the fan blade 31 of described limited boundary, 32 angle w1 respectively.Angle w3 differs one constant respectively with the fan blade 31 of described limited boundary, 32 angle w1, that is to say the value irrelevant with the fan blade number in according to the example of Fig. 3.The sequence of the sequence of subtended angle w2 and angle w3 has defined an irregular ordered series of numbers respectively.In the asymmetric design of air passageways and/or draught fan impeller, the relation between angle w1, w2, the w3 correspondingly changes each other.Particularly replace described midplane, can with the direction that is labeled out for example the direction of the rib of fan blade be used for the described angle of definition.
Fig. 4 shows the sectional view of cutting open with the axial plane of A-A mark along among Fig. 3.
Fan blade 11 has roughly rectangular withdrawal portion 40, thus make fan blade 11 when operation with than the little spacing in a second area along treating that in Fig. 4 the first area from the blower hood of top suit scans.Described second area comprises for the air inlet of air being imported draught fan impeller, by described withdrawal portion 40, is avoided in the more approaching periodic vibrational excitation that causes of skimming over owing to fan blade 11 at described air inlet place.
Matrix 10 comprises that at least one is used for wheel hub 13 and a frusto-conical region 35 of force closure ground connection draught fan impeller on.Described frusto-conical region 35 and first lead ring 33 and second lead ring 34 form the air passageways of a jet pipe shape, and the contraction flow region of wherein said jet pipe shape roughly forms at the minimum separable m place of air lead ring 12 with matrix 10.Described minimum separable m has caused the minimum cross-section of the air passageways that defined by section of a section of air lead ring 12, frusto-conical region 35 and two adjacent fan blades 11, and wherein said cross section roughly presents in the position identical with minimum separable.Minimum cross-section depends on the concrete shape of the cross section of air lead ring 12 and frusto-conical region about the exact position of minimum separable.
Air lead ring 12 is formed by first lead ring 33 and second lead ring 34 at least, and wherein the cone angle of first lead ring 33 of truncated cone shape is less than the cone angle of second lead ring 34 of truncated cone shape.First lead ring 33 is connected along a concentric ring with second lead ring 34.Lead ring 33,34 cone angle design like this, make air lead ring 12 can in receive in the conical surface 42, wherein said conical surface 42 touches air lead ring 12 at two concentric circle (Schnittkreis) 43,44 that cut off, but this conical surface 42 does not intersect with the inside of air lead ring 12.Therefore air lead ring 12 has an axial cross section, and the outside profile of this axial cross section forms recessed.
Therewith correspondingly, for forming constant wall thickness, the inboard towards described axle at air lead ring 12 is formed with raised surface, and wherein characteristic " projection " refers to, the line of two points on the inboard of air lead ring 12 always extends in the inside of air lead ring 12 at least in part.
Therefore the inside profile of the cross section of air lead ring 12 is crooked on the contrary as the outside profile of the radially cross section of outlet of the outside profile of the cross section of frusto-conical region 35, particularly this frusto-conical region 35.Therefore these two profiles form protrudingly, and the shape of wherein said projection is pointed to each other.
Described design by first lead ring 33 and second lead ring 34 has formed a contraction flow region and minimum separable m, and described minimum separable has caused the jet pipe effect in affiliated air passageways.
In optional embodiment, the ground design of the inner bulge of air lead ring, but whether the shape by two truncated cones that are connected but the shape of cross section profile by for example parabola shaped or circular arc are described.In these cases, formed cross section contraction flow region has also caused the jet pipe effect, can utilize its guiding air stream.
Air lead ring 12 does not axially extend on the whole length of the particularly fan blade 11 of draught fan impeller.Or rather, second lead ring, 34 distances are ended with an axial distance by ring 20 planes that limit of fitting.Be formed for the radial opening 41 of described air passageways thus, under installment state can in the radial direction along the shell body wall of transmission device guiding air by this radial opening.
Fig. 5 illustrates the transmission device 50 with mounted blower fan 57.Blower hood 51 surrounds draught fan impeller.In order to show, half of blower hood 51 only is shown in Fig. 5.
The wheel hub 13 of draught fan impeller is placed on the middleware 54 and force closure ground is connected with described middleware, and wherein middleware 54 is arranged on again on one 53 of transmission device also at least that shape is connected with described sealedly.Axle 53 is input shafts of transmission device 50.
Blower hood 51 has an annular region that has an air inlet 55, and blower fan sucks air by described annular region.Axially aligning of fan blade 11 causes air and sense of rotation irrespectively to be inhaled at same axial direction.Therefore, the suction side of draught fan impeller is defined as air clearly by the side of its inflow.Air passageways has an opening, air same with sense of rotation irrespectively by described opening outflow.Therefore form an air outlet slit.
The diameter in described zone with air inlet 55 is identical with the internal diameter of first lead ring 33.
Fan blade 11 nuzzles up at air inlet 55 places when rotating.Be to reduce noise, fan blade 11 has a withdrawal portion 40 respectively, and a subregion in air inlet 55 zones was scanned with little spacing by fan blade 11 thereby only make, and another is in more inner subregion diametrically and was scanned with bigger spacing.The described radial dimension of more inner subregion that is in diametrically is greater than the radial dimension that is in outside subregion diametrically.Therefore reduced the singing noise.
Fig. 6 shows the side view of blower fan among Fig. 5.Draught fan impeller is installed on the bevel gear lid 61.
Air can be by fan blade 11 motions, and described air is directed into air outlet slit 56 through frusto-conical region 35, first lead ring 33 and second lead ring 34.
Between blower hood 51 and first lead ring 33, be provided with gap 60.By with Fig. 4 more as can be seen, the withdrawal portion 40 of fan blade 11 roughly is two double-lengths of the axial dimension in gap 60 in the axial direction.
The withdrawal portion that the radially gauge rib 22 along fan blade 11 of second lead ring 34 arranges has realized the installation of draught fan impeller on an axle of giving prominence to from the sidewall of transmission device 50.This is the situation when column gear transmission for example.In this case, draught fan impeller can be installed in tight the place ahead of described sidewall, and the air that is moved by fan blade 11 flows along shell body wall radially outwardly and therefore.Described shell body wall covers a subregion of the air outlet slit of air passageways, i.e. such subregion, and this subregion is axially directed, that is its face normal is arranged to be parallel to the axis of axle.Therefore when being installed in shell body wall the place ahead, can omit between the housing of draught fan impeller and transmission device 50, the spacings by 61 generations of bevel gear lid in Fig. 6 because air is guided in this case radially outwardly.Can realize having the compact structure size of the transmission device of blower fan thus.
By the application of draught fan impeller in the different modification of transmission device, form a structural series, in the modification of this structural series, can use the component of this formation blower fan, particularly draught fan impeller uniformly.Therefore reduced the component variation of structural series.

Claims (37)

1. draught fan impeller with a plurality of air passagewayss, wherein each air passageways defines by fan blade, air lead ring and matrix at least, it is characterized in that, and the cross section of air passageways has a minimum value in trend from inside to outside,
Wherein, one first fan blade has first angle displacement with respect to the first adjacent fan blade on circumferential direction, described first fan blade has second angle displacement with respect to the second adjacent fan blade in the opposite direction, wherein said first angle displacement is less than described second angle displacement
Wherein, the axial cross section of described air lead ring forms a contraction flow region, thereby the described minimum value that realizes the cross section of air passageways at described contraction flow region place realizes the air passageways of jet pipe shape, thereby causes the jet pipe effect to cause directed cooling air stream in described air passageways.
2. draught fan impeller according to claim 1 is characterized in that, the minimum value of the cross section of described air passageways is caused by the minimum separable between matrix and the air lead ring.
3. draught fan impeller according to claim 2 is characterized in that, the minimum value of the cross section of described air passageways is caused by the cross section figure of the matrix with axial plane and the minimum separable that has between the cross section figure of air lead ring of axial plane.
4. draught fan impeller according to claim 1 is characterized in that, the cross section of described air lead ring side within it forms protrudingly and forms in its outside recessedly.
5. draught fan impeller according to claim 4 is characterized in that, the cross section of described air lead ring side so within it forms protrudingly and forms in its outside recessedly, makes the wall thickness substantial constant of air lead ring.
6. draught fan impeller according to claim 1, wherein said matrix has a frusto-conical region, the air lead ring can be with one heart received in the mathematics awl in like this, make described air lead ring in first axial region and second axial region, touch this mathematics awl, described minimum separable is arranged in the 3rd axial region between described air lead ring and the mathematics awl, wherein said the 3rd axial region is arranged between described first axial region and described second axial region, per at least two fan blades, section of frusto-conical region and a section of air lead ring form outward extending described air passageways.
7. according to each described draught fan impeller among the claim 1-6, it is characterized in that, be formed with at least two different air passagewayss at draught fan impeller.
8. according to each described draught fan impeller among the claim 1-6, it is characterized in that each air passageways can both be described by physical dimension, the sequence of the physical dimension of air passageways is irregular sequence when blower fan rotates.
9. draught fan impeller according to claim 8 is characterized in that, the described physical dimension of each air passageways is that the fan blade of angle between the fan blade of limited boundary or limited boundary is with respect to the angle of a reference direction fixing with respect to blower fan.
10. draught fan impeller according to claim 8, it is characterized in that, the described physical dimension of each air passageways is the angular orientation of center of gravity or the midplane of air passageways, or a direction that is labeled out of described air passageways is with respect to the angle of a reference direction fixing with respect to blower fan.
11., it is characterized in that the center of gravity that is formed by all fan blades is positioned at the center of blower fan according to each described draught fan impeller among the claim 1-6.
12. according to each described draught fan impeller among the claim 1-6, it is characterized in that the maximal axial extension of described fan blade is greater than the maximal axial extension of described air lead ring.
13. according to each described draught fan impeller among the claim 1-6, it is characterized in that the maximal axial extension of described fan blade is greater than the twice of the maximal axial extension of described air lead ring.
14., it is characterized in that the maximum radial dimension of described fan blade is greater than the smallest radial size of described air lead ring according to each described draught fan impeller among the claim 1-6.
15., it is characterized in that described fan blade is no more than a radius scope earth's axis to withdrawal in the suction side according to each described draught fan impeller among the claim 1-6.
16., it is characterized in that described fan blade has axially been withdrawn greater than 1/3rd of the maximal axial extension of described fan blade according to each described draught fan impeller among the claim 1-6 on the suction side.
17., it is characterized in that each fan blade has a symmetrical plane according to each described draught fan impeller among the claim 1-6.
18., it is characterized in that each fan blade has a symmetrical plane according to each described draught fan impeller among the claim 1-6, the rotation axis of described draught fan impeller is in the described symmetry plane.
19., it is characterized in that described draught fan impeller has a symmetrical plane according to each described draught fan impeller among the claim 1-6, the rotation axis of described draught fan impeller is in the described symmetry plane.
20. according to each described draught fan impeller among the claim 1-6, it is characterized in that the radial dimension of described matrix is less than the external diameter of described draught fan impeller.
21., it is characterized in that the radial dimension of described matrix is than the internal diameter little at least percent 15 of described air lead ring according to each described draught fan impeller among the claim 1-6.
22. according to each described draught fan impeller among the claim 1-6, it is characterized in that described air passageways forms an air outlet slit respectively, described air outlet slit comprises the subregion of a radial directed and the subregion of an axial orientation.
23. draught fan impeller according to claim 1 is characterized in that, each fan blade comprises the angle displacement value of at least two different stages with respect to the sequence along circumferential direction along the angle displacement of the most adjacent fan blade of circumferential direction.
24., it is characterized in that fan blade is along the circumferentially spaced apart certain distance brokenly of draught fan impeller according to each described draught fan impeller among the claim 1-6.
25. according to each described draught fan impeller among the claim 1-6, it is characterized in that, be provided with a quantity n fan blade, wherein at draught fan impeller when its axis evenly rotates, fan blade is spatially forming an activation sequence during fixing reference direction through one, and the cycle time of described activation sequence is greater than n/one of the rotation period of draught fan impeller.
26. draught fan impeller according to claim 25 is characterized in that, described cycle time is more than or equal to half of the rotation period of described draught fan impeller.
27. draught fan impeller according to claim 25 is characterized in that, equals the rotation period of draught fan impeller described cycle time.
28. system that comprises blower fan, described blower fan has one according to each described draught fan impeller and a blower hood among the claim 1-27, it is characterized in that, described blower hood surrounds described draught fan impeller at least in part, described blower hood has a zone that has a plurality of axial air entrances, wherein said fan blade has constant space with blower hood in first subregion in described zone with a plurality of axial air entrances, and in second subregion in described zone with a plurality of axial air entrances, the spacing of described fan blade and blower hood is greater than the constant space in described first subregion.
29. system according to claim 28 is characterized in that, described system is transmission device.
30. system according to claim 28 is characterized in that, in second subregion in described zone with a plurality of axial air entrances, the spacing of described fan blade and blower hood is greater than the twice of the constant space in described first subregion.
31. system according to claim 28 is characterized in that, described fan blade radially extends beyond described zone with a plurality of axial air entrances.
32., it is characterized in that described draught fan impeller is arranged on the axle of transmission device according to claim 29 or 31 described systems.
33. system according to claim 32 is characterized in that, described draught fan impeller is arranged on the input shaft of transmission device.
34. transmission line with a plurality of modification, described modification comprises that respectively one has blower fan and at least one gear stage according to each described draught fan impeller among the claim 1-27, it is characterized in that, draught fan impeller is installed on the input shaft of bevel gear level in first modification, and draught fan impeller is installed on the input shaft of cylindrical gears level in second modification.
35. transmission line according to claim 34, it is characterized in that, in first modification, air can radially be directed by air passageways, and in second modification, air can by air passageways with one with respect to the angle of radial direction be directed, simultaneously the axial plane medium dip of draught fan impeller in the axis of draught fan impeller be directed.
36., it is characterized in that in first modification, the shell body wall of transmission device partly covers the air outlet slit of air passageways according to claim 34 or 35 described transmission lines.
37. transmission line according to claim 36 is characterized in that, the shell body wall of transmission device partly covers the subregion of the axial orientation of this air outlet slit.
CN200880005556.2A 2007-02-23 2008-01-22 Ventilator wheel, system and transmission line Active CN101617127B (en)

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DE102007009366.9A DE102007009366B4 (en) 2007-02-23 2007-02-23 Fan wheel, system and transmission series
DE102007009366.9 2007-02-23
PCT/EP2008/000442 WO2008101576A2 (en) 2007-02-23 2008-01-22 Ventilator wheel, system and transmission line

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CN101617127B true CN101617127B (en) 2013-09-18

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DE102012025597A1 (en) 2012-07-06 2014-01-09 Sew-Eurodrive Gmbh & Co Kg Gear e.g. bevel gear, has fan shroud formed as nozzle in air outlet region, where nozzle is produced by adjusting rear edge of fan shroud or designed as adjusted rear edge of shroud, and adjustment has angle ranging between specific values
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WO2008101576A3 (en) 2008-10-23
DE102007009366B4 (en) 2017-06-14
CN101617127A (en) 2009-12-30
EP2122181B1 (en) 2018-06-27
DE102007009366A1 (en) 2008-08-28
WO2008101576A2 (en) 2008-08-28
EP2122181A2 (en) 2009-11-25

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