CN100460691C - Pressurized centrifugal rear axial-flown fan impeller - Google Patents

Pressurized centrifugal rear axial-flown fan impeller Download PDF

Info

Publication number
CN100460691C
CN100460691C CNB2007100143062A CN200710014306A CN100460691C CN 100460691 C CN100460691 C CN 100460691C CN B2007100143062 A CNB2007100143062 A CN B2007100143062A CN 200710014306 A CN200710014306 A CN 200710014306A CN 100460691 C CN100460691 C CN 100460691C
Authority
CN
China
Prior art keywords
impeller
axial
blade
many walls
wall
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
Application number
CNB2007100143062A
Other languages
Chinese (zh)
Other versions
CN101033755A (en
Inventor
林钧浩
Original Assignee
林钧浩
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 林钧浩 filed Critical 林钧浩
Priority to CNB2007100143062A priority Critical patent/CN100460691C/en
Publication of CN101033755A publication Critical patent/CN101033755A/en
Application granted granted Critical
Publication of CN100460691C publication Critical patent/CN100460691C/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The invention discloses a flow blower impeller with pressure-charged centrifugation. It has axle pan (1), axile bush (2), axial direction side-wall of impeller (3), multi-wall blade of impeller (4) connects to axial direction side-wall of impeller (3), suction pressure dividing wall (5) and thrust force wall (6) make up the multi-wall blade of impeller (4), pneumatic channel of impeller's inner flank (9)forming among multi-wall blade of impeller (4), It is characterized in that the reinforced pressure booster (11) which connects to multi-wall blade of impeller (4) is in front of the thrust force wall (6) of multi-wall blade of impeller (4). The invention has characteristics of good pressure charging effectiveness, energy-saving, low noise.

Description

Pressurized centrifugal rear axial-flown fan impeller
Technical field: the present invention relates to a kind of pressurized centrifugal rear axial-flown fan impeller, belong to the air purifying process field.
Background technique: the centrifugal rear flow fan impeller of people's use now, pressurized effect is poor, and efficient is lower, and noise is bigger, causes its whole typhoon machine can not save the energy significantly, is unfavorable for environmental protection again.
Summary of the invention: the objective of the invention is to overcome the shortcoming of above-mentioned prior art and provide a kind of and can make centrifugal rear flow fan pressurized effect better, power consumption still less, efficient is higher, the pressurized centrifugal rear axial-flown fan impeller that noise is lower.
Purpose of the present invention can reach by following measure: pressurized centrifugal rear axial-flown fan impeller, it has reel 1, axle sleeve 2, impeller axial side wall 3, is connected in many walls impeller blade 4 of impeller axial side wall 3, constitute the negative pressure partitioning wall 5 and the thrust wall 6 of many walls impeller blade 4, the inboard air-flow path 9 of the impeller that forms between many walls impeller blade 4, thrust wall 6 the place aheads that it is characterized in that many walls impeller blade 4 are provided with the reinforcing pressurized machine 11 that is connected in many walls impeller blade 4 negative pressure partitioning walls 5, and this impeller axial side wall 3 is the leaf blade disk or reinforces lacing wire.
In order further to realize purpose of the present invention, described reinforcing pressurized machine 11 is connected with impeller axial side wall 3.
In order further to realize purpose of the present invention being provided with radially pressurized air stream passage 12 of impeller between the thrust wall 6 of described reinforcing pressurized machine 11 and many walls impeller blade 4.
In order further to realize purpose of the present invention, described many walls impeller blade 4 by radially anterior to its radially the rear portion in axial direction gradually expansion widen.
In order further to realize purpose of the present invention, the inboard air-flow path 9 of the impeller that forms between described many walls impeller blade 4 by radially anterior to its radially the rear portion in axial direction gradually expansion widen.
In order further to realize purpose of the present invention, described impeller radially pressurized air stream passage 12 by radially anterior to its radially the rear portion in axial direction gradually expansion widen.
Pressurized centrifugal rear axial-flown fan impeller is meant by many walls impeller blade and impeller reel or with leaf blade disk, impeller reinforces many walls impeller blade formula draught fan impeller that lacing wire constitutes.Many walls impeller blade of this impeller is made of two (or one) negative pressure partitioning walls and a thrust wall, (the thrust wall with the negative pressure partitioning wall vertical with the impeller axial side wall or tilt crossing all can), this impeller axial sides is provided with the negative pressure gap, mainly lean on the suction function suction and the processing external substance in impeller negative pressure gap during work, because the pumping action in negative pressure gap is arranged, this impeller is not generally established totally enclosed type (full coverage impeller blade) leaf dish, semi-enclosedly (or claim half-open mode and only establish, only cover the impeller blade partial portion) the leaf dish, or do not establish leaf blade disk (full open model), or establish the reinforcing lacing wire.This impeller axial side wall (the impeller sidewall perpendicular to the impeller medial axis is called the impeller axial side wall) is the Dan Zhiye blade disk, reinforces the leaf dish or reinforce lacing wire.Many walls impeller blade is connected in the impeller axial side wall, refers to that promptly it is connected on the leaf blade disk, or in the impeller reinforcing lacing wire, or not only be connected on the leaf blade disk but also be connected in the impeller reinforcing lacing wire.
Reinforce pressurized machine and be connected in many walls impeller blade, two kinds of Connecting format are arranged, a kind of is that its axial edge is connected (mainly being meant the negative pressure partitioning wall that is connected in this many walls impeller blade) with many walls impeller blade, and its another axial edge is not connected with many walls impeller blade; And this axial edge that is not attached to many walls impeller blade both can also can not connect with the impeller axial side wall with the connection of impeller axial side wall; Be connected in the impeller axial side wall, just be connected, or all be connected with the reinforcing lacing wire with the leaf blade disk with leaf blade disk or reinforcing lacing wire.The another kind of form that the reinforcing pressurized machine is connected in many walls impeller blade is to reinforce pressurized machine two axial edges all to follow many walls impeller blade to be connected.Reinforce the position that pressurized machine is connected in many walls impeller blade, it can be the negative pressure partitioning wall (on any position) of this many walls impeller blade, can be the thrust wall (on any position) of many walls impeller blade, also can all be connected with the thrust wall with the negative pressure partitioning wall of many walls impeller blade.
Reinforce the place ahead that pressurized machine must be located at the inboard many walls impeller blade of centrifugal rear flow fan impeller thrust wall, and with this many walls impeller blade be connected (the thrust wall of many walls impeller blade is before forward impeller turns to a side to be, dorsad impeller turn to a side for after).Be provided with like this, both helped reinforcing impeller, help increasing blast again, can not cause impeller to stop up simultaneously in the time of can also guaranteeing to aspirate external substance.
The purpose of reinforcing pressurized machine is set has two, the intensity and the rigidity of the centrifugal rear flow fan impeller of the enhancing that the first is, do not rupture to guarantee that impeller is indeformable, it two is can be to the gas transfer more energy, to increase the blast and the air quantity (increase wind speed) of blower fan by reinforcing pressurized machine.For this reason, reinforce between pressurized machine and the many walls impeller blade, suitable radial air flow passage (be called and reinforce the pressurized air stream passage) must be set, to guarantee that gas is radially under action of centrifugal force, can absorb many walls impeller blade thrust wall smoothly by side runner in the impeller fully and reinforce the pressurized machine energy delivered, and then reach the purpose that increases the fan delivery blast.
Reinforce pressurized machine and can be designed to multiple different structural type, as plate shaped, arc, airfoil, angular, cylindrical etc.Reinforce supercharger outlet direction (radially back outlet) and can be designed to forward direction, can be designed to the back to, also can be designed to radially, the radial length of reinforcing pressurized machine is changeable, according to using needs to decide.The reinforcing pressurized machine in thrust wall the place ahead of wall impeller blade more than can be designed to an integral body, and also radially segment design becomes several joints.Prismatic, columniform reinforcing pressurized machine, though its pressurized effect is poor, it is relatively good that it reinforces many walls impeller blade effect, and processing is also very convenient, so also can be used.
Reinforce pressurized machine with general impeller supercharging guide plate difference, general supercharging guide plate all is located at radially rear portion of impeller, is not connected with many walls impeller blade; Reinforce pressurized machine and can be located on the arbitrary position, the thrust wall the place ahead of wall impeller blade more than, can be designed to whole singlely, it is several also can be designed to more piece, and must follow many walls impeller blade be connected.
Reinforce pressurized machine and reinforce the lacing wire difference with impeller.Can guarantee also that impeller is indeformable and do not rupture though reinforce lacing wire, not increase the function of fan pressure, and impeller is resulted in blockage, cause blower fan to be not suitable for the suction material and use; Reinforce pressurized machine,, can not cause impeller to stop up in any case, and it can have enough function of increasing pressure again because it can be arranged on the impeller inboard.
Medium-and-large-sized centrifugal rear flow fan impeller diameter is big, and many walls impeller blade radial length is big, and its thrust wall axial dimension is big, and its negative pressure partitioning wall width is big, and impeller is easy to the distortion fracture.If rely on the way that increases the impeller material thickness and the strength of materials (noble material) to solve, be impracticable.Moreover, want to increase fan pressure, if rely on the way that adds supercharging guide plate and many walls of increase impeller blade quantity to solve, also be impracticable.Because these two kinds of ways all can increase impeller weight and cost, the result causes blower fan manufacture cost height, and mechanical efficiency is very low.If the centrifugal rear flow fan impeller of constituting for many many walls of wall impeller blades is provided with the reinforcing pressurized machine, by the effect of reinforcing pressurized machine, promptly use light sheet and the medium-and-large-sized centrifugal rear flow fan impeller of other low density material manufacturing, can guarantee that this impeller is indeformable does not rupture yet, pressurization by reinforcing pressurized machine can also guarantee that blower fan has enough blast.Medium-and-large-sized centrifugal rear flow fan impeller is provided with the reinforcing pressurized machine, can greatly alleviate blower fan weight, can reduce the blower fan cost like this, can guarantee that again blower fan is energy-efficient.
The recessed draught fan impeller of male structure form on every side in the middle of the present invention can also adopt, the draught fan impeller of this structural type adopts from the radially anterior extremely radially rear portion of impeller and is into many walls impeller blade that axial expansion is widened, the inboard air-flow path of the impeller that many walls impeller blade of this structural type constitutes also be by radially anterior to its radially the rear portion in axial direction gradually expansion widen, the axial span of the impeller outlet of this structural type is greater than the axial span of impeller inlet, and its impeller blade exports axial span greater than the axial span of impeller blade import.On the impeller of this structural type, if do not establish impeller inlet, then to span, its impeller blade exports axial span greater than the axial span of impeller blade front end to the axial span of impeller outlet greater than the impeller jack shaft.
The pneumatic principle that protruding draught fan impeller adopted around this centre was recessed is, make air-flow in this passage of fully expanding vertically, can constantly absorb energy on the one hand under action of centrifugal force increases flow velocity, can constantly reduce flow velocity in fully expansion is flowed again on the one hand and increase blast.Through such flowing, flow behind impeller outlet, its pressure can be very high, but its flow velocity can be very low.So just can make blower fan obtain higher blast, but its noise can be very low.
The middle recessed draught fan impeller of male structure form on every side, just radially the axial span at rear portion (impeller is called radially anterior near axis part greater than the draught fan impeller of its radially anterior axial span, be called radially rear portion near impeller outer rounded edge position), the impeller of this structural type is by becoming axial expansion in the circle to circle, whole impeller is a spill, and the space surface of revolution of its spill one axial sides is an expansion end taper tubular outwardly.The so-called impeller radially axial span at rear portion only refers to effective diffusion space of the inboard air-flow path of impeller greater than the radially anterior axial span of impeller, is not to be to say that whole impeller is protruding around recessed in the middle of all being.
The centrifugal rear flow fan impeller two axial sides or an axial sides (impeller side perpendicular to the impeller medial axis is called axial sides) of this structural type, do not establish totally-enclosed leaf dish, and establish open leaf dish, and this leaf dish diameter is very little again, the inboard air-flow path of its impeller, mainly be meant the passage of (being between the thrust wall and thrust wall of many walls impeller blade) between many walls impeller blade, the inboard air-flow path of the impeller of this form also is radially in axial direction to expand at the rear portion to it by impeller is radially anterior.Impeller one axial sides of this structural type or the sideways aerial surface of revolution of diaxon are umbilicate taper tubular.The centrifugal rear flow fan impeller of this structural type, if its two an axial side or an axial sides are provided with closed leaf dish, then the inboard air-flow path of impeller also radially becomes axial expansion in the rear portion by impeller is radially anterior to it, its leaf dish is umbilicate taper tubular.
The centrifugal rear flow fan impeller of this structural type can not established impeller inlet, also can not establish the import of many walls impeller blade, but impeller outlet and the outlet of many walls impeller blade all must be set.This impeller outlet and many walls impeller blade export axial span all greater than the axial span of impeller radial front end and many walls impeller blade radial front end.
The inboard air-flow path of general centrifugal rear flow fan impeller is by center of circle expansion outside circle, increase the inboard air-flow path diffusion of impeller chamber volume and must increase impeller diameter, but increasing impeller diameter will make impeller size strengthen, weight strengthens, this is unallowed under blower fan specified power and speed conditions.Pressurized centrifugal rear axial-flown fan impeller, increase its inboard air-flow path diffusion chamber volume, be to realize by way along the expansion of impeller axial direction, increase diffusion chamber volume along the impeller axial direction, be not increase impeller diameter, do not increase and realize under the condition of impeller weight, and this expansion scope is very big again, can in 0 ° of-90 ° of scope, expand arbitrarily, can make the inboard air-flow path volume of impeller increase several times, thereby just can obtain very considerable increase blast and reduce noise result.
So the pressurized centrifugal rear axial-flown fan impeller of this structural type can be middle recessed convex form on every side, so its inboard air-flow path can be again by the front portion to its radially the rear portion in axial direction gradually expansion widen, all be by from preceding then in axial direction gradually many walls impeller blade of widening of expansion determined.This many walls impeller blade is radially become axial expansion to widen mainly to be meant its thrust wall in the rear portion to it by radially anterior.This many walls impeller blade of widening vertically (comprising many walls blade thrust wall) can be multiple different structural type, as plate shaped, arc, curvilinerar figure, airfoil etc.This many walls impeller blade can tilt to intersect also and can intersect vertically with the impeller axial sides.The outlet form of this many walls impeller blade can be a forward direction, can be radially, also can be the back to.
For the centre recessed around the centrifugal rear flow fan impeller of male structure form, its axial sides be if need be provided with the leaf blade disk, the shape of its leaf dish also is umbilicate taper tubular, this taper tubular leaf dish outside diameter can be less than or equal to the impeller outer circular diameter.The draught fan impeller of male structure form around this centre is recessed, its axial sides is perhaps only established the reinforcing lacing wire if do not establish the leaf blade disk, and then the aerial surface of revolution of this impeller axial expansion side all is middle recessed high taper tubular on every side.
This impeller that becomes many walls impeller blade of axial expansion to constitute from A-P, because the pumping action in negative pressure gap is arranged, on this impeller, impeller inlet can be set, also impeller inlet can be set, and impeller inlet can coincide with the blade import, also can misfit; Misfit, many walls impeller blade can put in the impeller inlet depths, increases many walls impeller blade radial length, is beneficial to many walls impeller blade to the gas transfer more energy.The axial span of this impeller inlet is less than the axial span of impeller outlet.
Centrifugal rear flow fan impeller, no matter which kind of structural type this impeller is, no matter which kind of structural type its many walls impeller blade is, all suits to be provided with the reinforcing pressurized machine; Be provided with and obtain the effect of reinforcing impeller and increasing blast after reinforcing pressurized machine, and can not cause impeller to stop up during the suction material.If recessed male structure form on every side in the middle of centrifugal rear flow fan impeller adopts, its many walls impeller blade are to be into the structural type that axial expansion is widened by radially anterior extremely radially rear portion, for this impeller the reinforcing pressurized machine is set again; Conversely, after if centrifugal rear flow fan impeller is established and is reinforced pressurized machine, design the middle recessed impeller of male structure form on every side for it again, for its many walls impeller blade design is into the structural type that axial expansion is widened from radially anterior extremely radially rear portion, so, can make impeller be reinforced, (supercharging is dual to make blower fan obtain better pressurized effect again, promptly refer to reinforce the pressurized machine and the double action of the air-flow path of expansion in axial direction), and can also obtain the good result that reduces noise.
The present invention reinforces pressurized machine and changes technical measures such as centrifugal rear flow fan impeller and many walls impeller blade design form thereof by adding for common centrifugal rear flow fan, to reach the purpose requirement of reinforcing impeller, raising the efficiency, saving the energy.By reinforcing the reinforcement effect of pressurized machine, can make medium-and-large-sized centrifugal rear flow fan impeller with common sheet stock and the cheap materials processing of other low density, can greatly alleviate draught fan impeller weight like this; By reinforcing the pressurization of pressurized machine, can reduce the impeller radial dimension significantly.Fairly obvious, so, can reduce the blower fan cost, can make blower fan energy-efficient again.If recessed protruding structural type on every side in the middle of again draught fan impeller being processed into is processed into the structural type that becomes axial expansion to widen by radially anterior extremely radially rear portion with many walls impeller blade, then blower fan can be obtained the ideal effect of better reduction noise.
Though the present invention proposes two technical measures, but not necessarily want each product all to use this two technology simultaneously in the practical application, for example, if a kind of product requires not really high to blast, require not really tight to noise, can only consider to adopt the technology of pressurized machine of reinforcing when then designing this product, if require very high to blast, require very tight to noise, can take into account when then designing this product and reinforce pressurized machine and Impeller Machining is become middle recessed protruding two technology of structural type on every side, to guarantee to satisfy to greatest extent product high pressure low noise performance requirement.
Description of drawings:
Fig. 1 is the structural representation of first kind of mode of execution of the present invention;
Fig. 2 is the impeller blade of Fig. 1 and reinforces pressurized machine crosscut schematic representation;
Fig. 3 is assemblied in structural representation on the blower fan for Fig. 1;
Fig. 4 is the structural representation of second kind of mode of execution of the present invention;
Fig. 5 is the impeller blade of Fig. 4 and reinforces pressurized machine crosscut schematic representation;
Fig. 6 is the structural representation of the third mode of execution of the present invention;
Fig. 7 is the impeller blade of Fig. 6 and reinforces pressurized machine crosscut schematic representation;
Fig. 8 is assemblied in structural representation on the blower fan for Fig. 6;
Fig. 9 is the 4th kind of mode of execution structural representation of the present invention;
Figure 10 is the impeller blade of Fig. 9 and reinforces pressurized machine crosscut schematic representation;
Figure 11 is assemblied in structural representation on the blower fan for Fig. 9;
Figure 12 is the 5th kind of mode of execution structural representation of the present invention;
Figure 13 is the impeller blade of Figure 12 and reinforces pressurized machine crosscut schematic representation;
Figure 14 is the 6th kind of mode of execution structural representation of the present invention;
Figure 15 is assemblied in structural representation on the blower fan for Figure 14.
Embodiment:
Do bright in detail below in conjunction with accompanying drawing to preferred forms of the present invention:
Embodiment 1: pressurized centrifugal rear axial-flown fan impeller (with reference to figure 1, Fig. 2, Fig. 3), it has reel 1, axle sleeve 2, axial sidewall 3 (being impeller posterior lobe dish) behind the impeller, axle sleeve 2 connect impeller axial side wall 3, and (impeller directly connects motor or other power unit one side is called rear side or claims axially side of axial rear side, back; A side on the other side is called the front side, or title axial front side, front axle is to the side), the flat round iron plate of axial sidewall 3 usefulness constitutes behind the impeller, evenly be provided with wall impeller blade 4 more than 6 on the impeller axial side wall 3, and formation impeller outlet 7, many walls impeller blade 4 is three wall construction formulas, constitute by thrust wall 6 and two negative pressure partitioning walls 5, each impeller blade all is to be stamped to form with same iron plate, impeller blade thrust wall 6 is by the axial span the same (impeller on do not establish impeller inlet) of impeller radial front end to impeller outlet 7, form negative pressure gap 8 between many walls impeller blade 4, many walls impeller blade outlet 10 is a forward-type, each many walls impeller blade thrust wall 6 the place ahead radially rear portion are provided with the reinforcing pressurized machine 11 of a circular arc sheet iron shape, reinforcing pressurized machine 11 front axles welds together with the sideways negative pressure partitioning wall 5 of many walls impeller blade front axle to the edge, thereafter axial edge welds together with axial sidewall 3 (leaf dish) behind the impeller, reinforces to be provided with between pressurized machine 11 and the impeller blade thrust wall 6 and radially reinforces pressurized air stream passage 12.Reinforcing pressurized machine 11 radially rear end outlet is forward-type.Present embodiment is located in the casing 13 when being assemblied on the motor, casing 13 is cylindrical drum and conically shaped assemblying body form, wherein the conically shaped position is a blade wheel chamber 22, impeller promptly is contained in this blade wheel chamber 22, the cylindrical drum position of casing 13 is the diffusion chamber, this taper tubular blade wheel chamber is by axis side direction body axial front side expansion backward, its expansion is terminal to be connected with cylindrical tube shape diffusion chamber, the indoor interior sidewind diffusion passage 14 of casing that is provided with of diffusion, cylindrical tube shape diffusion chamber radial sidewalls is provided with fan outlet 16, its front axle is provided with air inlet 15 to sidewall, and casing 13 rear sides are provided with motor 17, and motor 17 directly connects with impeller sleeve 2 by motor shaft 18.During work, gas enters in the body by blower fan import 15, portion gas enters the impeller inboard by impeller negative pressure gap 8 and is processed to the high-energy high velocity air, and this part suction function and mobilization that enters the high-energy high velocity air formation of directly being processed into by many walls impeller blade and reinforcing pressurized machine aspirates processing impeller front axle gas laterally again by impeller negative pressure gap 8 again.High-energy high velocity air by many walls impeller blade and the direct or indirect processing of reinforcing pressurized machine is discharged body through blower fan outlet 16 under centrifugal action.
During work, enter the gas of inboard air-flow path 9 of impeller and reinforcing pressurized air stream passage 12 by negative pressure gap 8, under impeller blade thrust wall and reinforcing pressurized machine 11 double actions, absorb more energy, produce higher flow velocity, thereby its suction function is stronger, suction to external world is just bigger, the energy that passes to the ambient atmos material is also just more, so the blast of fan outlet 16 and air quantity will be higher.While links together the sideways negative pressure partitioning wall 5 of impeller blade front axle by reinforcing pressurized machine 11 because the effect of reinforcing pressurized machine 11 is arranged with axial sidewall (leaf dish) 3 behind the impeller.Each many walls impeller blade is connected with axial sidewall behind the impeller by thrust wall and two parts of reinforcing pressurized machine to tighten together, during work, even how big wind-force is again, many walls impeller blade is opened down with the wind, the distortion fracture, be located at the impeller inboard owing to reinforce pressurized machine 11 again, the suction solid matter can not cause impeller to stop up.
This example indeformablely can not rupture because its air quantity is big, blast is high, impeller intensity is big, can not cause impeller to stop up, and noise is low, uses so adapt to medium-and-large-sized induced draught fan, ventilation blower fan and the assembling of material suction blower fan.
Embodiment 2: pressurized centrifugal rear axial-flown fan impeller (with reference to figure 4, Fig. 5), its structure is the same substantially with embodiment 1, many walls impeller blade 4 outlets of this example that different is are backward type, reinforcing pressurized machine 11 front axles that impeller blade thrust wall 6 the place aheads are provided with connect with the sideways negative pressure partitioning wall of many walls impeller blade front axle 5 edges to the edge, thereafter axial edge does not connect with axial sidewall behind the impeller, is not connected with the sideways negative pressure partitioning wall 5 of rear axle with many walls impeller blade thrust wall 6 yet.Reinforcing pressurized machine 11 radially rear end outlet is backward type.
Because frontal resistance is little when work to many walls impeller blade of outlet in the back, the reinforcement effect that props up by the reinforcing pressurized machine of this one side jointing type, the sideways negative pressure partitioning wall of front axle that yet can guarantee each many walls impeller blade can not raised fracture, can guarantee that whole impeller can not be out of shape, because radially absolute dimension is long to reinforce pressurized machine 11, pressurization is strong, so can make the impeller diameter size little, make the moulding of whole blower fan body little, can raise the efficiency like this, can reduce the blower fan cost again.
This routine performance characteristics is the same with embodiment 1 with purposes.
Embodiment 3: pressurized centrifugal rear axial-flown fan impeller is (with reference to figure 6,7,8), its structure is the same substantially with example 1, different is that the axial sidewall in this example back is made of twice reinforcing lacing wire 19, thrust wall 6 the place aheads of each many walls impeller blade are established two oblate cylindricalitys and are reinforced pressurized machine 11, reinforcing pressurized machine 11 front axles all follows the sideways negative pressure partitioning wall 5 of many walls impeller blade front axle to connect to the edge, thereafter axial edge follows the reinforcing lacing wire 19 corresponding positions of the back axial sidewall of impeller to link together respectively, second difference is that axial side is provided with air inlet 15 behind this routine fan casing, and impeller is from side suction ambient atmos material between the casing diaxon during work.
The suitable big flow ventilation blower fan assembling of this example is used.
Embodiment 4: pressurized centrifugal rear axial-flown fan impeller is (with reference to figure 9, Figure 10, Figure 11) its structure is the same substantially with example one, different is that this routine impeller is middle recessed protruding structural type on every side, impeller is provided with impeller inlet 20, the thrust wall 6 of many walls impeller blade 4 is in axial direction expanded gradually to impeller blade outlet 10 from impeller blade import 21 and is widened, the inboard air-flow path 9 of impeller is axially to expand gradually to widen form from impeller inlet 20 to impeller outlet 7, reinforcing pressurized machine 11 is from the preceding axial expansion form that then is with the reinforcing pressurized air stream passage 12 that many walls impeller blade thrust wall 6 constitutes, the sideways aerial surface of revolution of impeller front axle is umbilicate taper tubular, the taper tubular blade wheel chamber 22 that second difference is this routine casing 13 by axis forward the side direction axis expand to rear side, air inlet 15 is located at taper tubular blade wheel chamber serrated end one side.
During work, after gas enters impeller by impeller inlet 20, under centrifugal action, radially flow to impeller outlet 7, whole flow process is expansion mobile (based on an axial expansion), in this expansion flow process, the gas limit absorbs many walls impeller blade thrust wall 6 and reinforces pressurized machine 11 increases flow velocity for its energy delivered, simultaneously again at diffusion ceaselessly.Owing to increase blast for the gas transfer energy, be by many walls impeller blade thrust wall 6, reinforce pressurized machine 11, be the inboard air-flow path 9 of axial expansion type impeller blade and be under the reinforcing pressurized air stream passage 12 quadruple effects of axial expansion and carry out, so when gas flows to impeller outlet 7, the pressure increase is very big, it is very little that flow velocity becomes, so fan pressure is just very high, noise is just very little.
Because inboard air-flow path 9 of impeller and reinforcing pressurized air stream passage 12 mainly are to be the axial expansion form, cause gas in such air-flow path, can directly absorb energy fully, diffusion can directly fully slow down, this deceleration diffusion effect is than mainly much better than by sidewind diffusion passage 14 deceleration diffusions in the casing at the impeller radial outside, this deceleration diffusion mode has greatly shortened the gas flow process, reduce friction, thereby can obtain effect energy-efficient and the reduction noise.
During work,, can guarantee that impeller can not be out of shape fracture, guarantee that the impeller long-term operation is steady because the reinforcement effect of reinforcing pressurized machine 11 is arranged.
This example adapts to the high pressure blower assembling and uses.The high pressure blower that uses such impeller to assemble can be energy-efficient, can reduce noise again, helps environmental protection.
Embodiment 5: pressurized centrifugal rear axial-flown fan impeller (with reference to Figure 12,13), its structure is the same substantially with example 4, different is that axially the posterior lobe dish diameter of sidewall 3 is little behind this routine impeller, many walls impeller blade 4 is radially anterior with axially sidewall connection behind the impeller, reinforcing pressurized machine 11 front axles in many walls impeller blade thrust wall 6 the place aheads connect with the sideways negative pressure partitioning wall 5 of many walls impeller blade front axle to the edge, reinforce pressurized machine 11 backs and axially connect with the sideways negative pressure partitioning wall 5 of many walls impeller blade rear axle at the edge.
Be provided with like this, because impeller posterior lobe dish diameter is little, can alleviate impeller weight, but owing to have from the preceding inboard air-flow path 9 of impeller of axial expansion and the expansion pressurization of reinforcing pressurized air stream passage 12 of then being, supercharging and the reinforcement effect of reinforcing pressurized machine are arranged, both can impel impeller energy-efficient, obtain desirable increase blast (or increasing air quantity) and reduce noise result, can guarantee that again impeller has enough intensity and rigidity, guarantee that impeller operation is steady.
This example is assemblied in in the identical casing of example 4.Use adapts to high pressure air blast and ventilation use by the blower fan of this impeller assembling.
Embodiment 6: pressurized centrifugal rear axial-flown fan impeller (with reference to Figure 14,15), its structure is the same substantially with example 4, different is that this routine impeller is not established impeller inlet, many walls impeller blade 4 is radially anterior to be connected with axle sleeve 2, the impeller front axle is provided with axial side wall (reinforcing the leaf dish) 3 in the middle of the side, by axial side wall all many walls impeller blade front ends are connected and be tightened to an integral body, second difference is that this routine casing 13 is scroll casing type.
During work, gas enters the casing inboard by air inlet, be sucked into the impeller inboard by impeller negative pressure gap 8, under action of centrifugal force, then pass through the inboard air-flow path 9 of impeller and reinforce pressurized air stream passage 12 from preceding, the limit absorbs energy increase flow velocity, and slowing down in the limit increases blast, arrange sidewind diffusion passage in casing by impeller outlet then, continue the deceleration diffusion.The gas that is sucked into body is by the Impeller Machining diffusion that slows down, and by the casing diffusion passage diffusion that slows down again, exports at 16 o'clock to blower fan again, and wind speed is very low, and noise is very low, and blast is but very high.

Claims (6)

1. pressurized centrifugal rear axial-flown fan impeller, it has reel (1), axle sleeve (2), impeller axial side wall (3), be connected in many walls impeller blade (4) of impeller axial side wall (3), constitute the negative pressure partitioning wall (5) and the thrust wall (6) of many walls impeller blade (4), the inboard air-flow path (9) of the impeller that forms between many walls impeller blade (4), thrust wall (6) the place ahead that it is characterized in that many walls impeller blade (4) is provided with the reinforcing pressurized machine (11) that is connected in many walls impeller blade (4) negative pressure partitioning wall (5), and this impeller axial side wall (3) is the leaf blade disk or reinforces lacing wire.
2. pressurized centrifugal rear axial-flown fan impeller according to claim 1 is characterized in that described reinforcing pressurized machine (11) is connected with impeller axial side wall (3).
3. pressurized centrifugal rear axial-flown fan impeller according to claim 1 is characterized in that being provided with radially pressurized air stream passage (12) of impeller between the thrust wall (6) of described reinforcing pressurized machine (11) and many walls impeller blade (4).
4. according to claim 1 or 2 or 3 described pressurized centrifugal rear axial-flown fan impellers, it is characterized in that described many walls impeller blade (4) by radially anterior to its radially the rear portion in axial direction gradually expansion widen.
5. pressurized centrifugal rear axial-flown fan impeller according to claim 4, it is characterized in that between described many walls impeller blade (4) the inboard air-flow path of impeller (9) that forms by radially anterior to its radially the rear portion in axial direction gradually expansion widen.
6. pressurized centrifugal rear axial-flown fan impeller according to claim 3, it is characterized in that described impeller radially pressurized air stream passage (12) by radially anterior to its radially the rear portion in axial direction gradually expansion widen.
CNB2007100143062A 2007-04-04 2007-04-04 Pressurized centrifugal rear axial-flown fan impeller Expired - Fee Related CN100460691C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNB2007100143062A CN100460691C (en) 2007-04-04 2007-04-04 Pressurized centrifugal rear axial-flown fan impeller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNB2007100143062A CN100460691C (en) 2007-04-04 2007-04-04 Pressurized centrifugal rear axial-flown fan impeller

Publications (2)

Publication Number Publication Date
CN101033755A CN101033755A (en) 2007-09-12
CN100460691C true CN100460691C (en) 2009-02-11

Family

ID=38730453

Family Applications (1)

Application Number Title Priority Date Filing Date
CNB2007100143062A Expired - Fee Related CN100460691C (en) 2007-04-04 2007-04-04 Pressurized centrifugal rear axial-flown fan impeller

Country Status (1)

Country Link
CN (1) CN100460691C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010130146A1 (en) * 2009-05-15 2010-11-18 Lin Junhao Multifunctional synchronous backflow ventilating compressor

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009140854A1 (en) * 2008-05-22 2009-11-26 山东大学 Multi-function centrifugal fan
WO2009155778A1 (en) * 2008-06-25 2009-12-30 山东大学 A cooking fume exhauster
WO2010028546A1 (en) * 2008-09-13 2010-03-18 Lin Junhao Synchronous backflow fan
CN204458506U (en) * 2014-04-11 2015-07-08 林钧浩 Following current boosting energy-saving blower fan
CN104826709B (en) * 2015-04-17 2018-05-08 林钧浩 Material suction crushing blower
CN105485051A (en) * 2015-09-29 2016-04-13 常州倍安特动力机械有限公司 Fan for cooling generating device
CN112378068A (en) * 2020-11-26 2021-02-19 武汉指南房地产经纪服务有限公司 Air purification degerming equipment in gymnasium
CN112901277A (en) * 2021-01-14 2021-06-04 溧阳市新力机械铸造有限公司 Heater impeller and preparation method thereof

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN85107811A (en) * 1985-10-19 1986-07-02 南昌市节能技术研究所 Improve the new structure of centrifugal fun for inner efficiency
US4822246A (en) * 1988-07-19 1989-04-18 Hsu Yun Tung Fan for moving fluid axially and radially
CN2358254Y (en) * 1998-03-02 2000-01-12 梁新理 Double-suction type adjustable booster fan specially adapted for cement vertical kiln
JP2003184788A (en) * 2001-12-18 2003-07-03 Mitsubishi Electric Corp Centrifugal blower and manufacturing method thereof
US6966830B2 (en) * 2001-02-15 2005-11-22 Flettner Ventilator Limited Device for ventilation and/or air circulation
CN2742201Y (en) * 2004-04-08 2005-11-23 林钧浩 Multiwall blade booster rear flow fan
CN2839671Y (en) * 2005-08-19 2006-11-22 林钧浩 Booster axial-flow fan

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN85107811A (en) * 1985-10-19 1986-07-02 南昌市节能技术研究所 Improve the new structure of centrifugal fun for inner efficiency
US4822246A (en) * 1988-07-19 1989-04-18 Hsu Yun Tung Fan for moving fluid axially and radially
CN2358254Y (en) * 1998-03-02 2000-01-12 梁新理 Double-suction type adjustable booster fan specially adapted for cement vertical kiln
US6966830B2 (en) * 2001-02-15 2005-11-22 Flettner Ventilator Limited Device for ventilation and/or air circulation
JP2003184788A (en) * 2001-12-18 2003-07-03 Mitsubishi Electric Corp Centrifugal blower and manufacturing method thereof
CN2742201Y (en) * 2004-04-08 2005-11-23 林钧浩 Multiwall blade booster rear flow fan
CN2839671Y (en) * 2005-08-19 2006-11-22 林钧浩 Booster axial-flow fan

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010130146A1 (en) * 2009-05-15 2010-11-18 Lin Junhao Multifunctional synchronous backflow ventilating compressor

Also Published As

Publication number Publication date
CN101033755A (en) 2007-09-12

Similar Documents

Publication Publication Date Title
CN100460691C (en) Pressurized centrifugal rear axial-flown fan impeller
CN201241864Y (en) Wind impeller for fan
CN101382150B (en) Synchronous rear flow fan
CN2742201Y (en) Multiwall blade booster rear flow fan
CN204458506U (en) Following current boosting energy-saving blower fan
CN201116539Y (en) Axial flow fan
CN100478572C (en) Pressurized centrifugan blower impeller
CN205371033U (en) Electric locomotive pulls ventilation blower with centrifugal axial compressor
CN101451544A (en) Processing casing and air compressor
WO2007019796A1 (en) A pressurized axial blower
CN201679745U (en) Low-noise axial flow fan for cooling air conditioner
CN201176968Y (en) Halting cell type casing treatment and compressor
CN204284016U (en) A kind of multi-wing centrifugal fan
CN101566165A (en) Synchronous after flow ventilating compressor
CN205714857U (en) A kind of antecurvature multiple wing type centrifugal blower fan
CN103939391B (en) Prop up blade and reinforce pressurizating ventilation machine
CN101566164A (en) Multifunctional synchronous after flow ventilating compressor
CN201339600Y (en) Centrifugal medium-pressure blower impeller
CN207750261U (en) Efficient mute micro-motor flow fan
CN202360458U (en) Multi-wing centrifugal fan with reinforced air inlet function
CN109779970A (en) The bionical noise-lowering centrifugal blower of fin shape
CN203822699U (en) Branch-blade-reinforcing pressurizing ventilator
CN211009268U (en) High-efficiency volute-free centrifugal fan
CN201679741U (en) Special fan for adsorption of oil smoke in kitchen
CN209261908U (en) Wind wheel, fan assembly and dryer

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
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20090211

Termination date: 20120404