CN107524616A - Electric fan and there is its electric dust collector - Google Patents
Electric fan and there is its electric dust collector Download PDFInfo
- Publication number
- CN107524616A CN107524616A CN201710479475.7A CN201710479475A CN107524616A CN 107524616 A CN107524616 A CN 107524616A CN 201710479475 A CN201710479475 A CN 201710479475A CN 107524616 A CN107524616 A CN 107524616A
- Authority
- CN
- China
- Prior art keywords
- fan
- housing
- fan hub
- rotating vane
- electric
- 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.)
- Granted
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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
- 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
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
-
- 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
- F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
- F04D25/0606—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump
-
- 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
- F04D29/02—Selection of particular materials
- F04D29/023—Selection of particular materials 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
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
- F04D29/4226—Fan casings
-
- 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
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/44—Fluid-guiding means, e.g. diffusers
- F04D29/441—Fluid-guiding means, e.g. diffusers especially adapted for elastic fluid pumps
Abstract
The present invention provides a kind of small-size light-weight, big air quantity scope, efficient electric fan, and provides the electric dust collector that attraction is improved with big air quantity scope.Electric fan includes：Motor part with rotor and stator；The housing of the above-mentioned motor part of storage of one end open；It is arranged at the rotary shaft of above-mentioned rotor；It is fixed on the rotating vane of the rotary shaft；It is configured at the demarcation strip of the above-mentioned motor part side of the rotating vane；With the open side and the fan hub of the above-mentioned rotating vane of covering for being arranged at above-mentioned housing, formed with stream between the outer circumferential side and said fans shell of above-mentioned rotating vane, above-mentioned housing and said fans shell are resin-mades, and the end of said fans shell can be chimeric with the end of above-mentioned housing.
Description
Technical field
The present invention relates to electric fan and load its electric dust collector.
Background technology
As the small-sized electric fan of existing electric dust collector, Japanese Unexamined Patent Publication 2010-281231 public affairs are disclosed in
Report (patent document 1).Recorded in the patent document 1 " including：The impeller of oblique flow type blade；Driving is fixed with the rotation of impeller
The motor of rotating shaft；Air-flow and there is in motor periphery the conducting element of wind path as caused by impeller with guiding, conducting element is prolonging
Direction is stretched to be divided into multiple by the wind path extended with continuously increasing wind path sectional area from upstream to downstream and form.”.
In addition, the electric fan as existing electric dust collector, there is Japanese Unexamined Patent Publication 2001-17358 publication (patents
Document 2).Record in the patent document 2 and " be configured with the impeller that directly links with motor and positioned at the downstream of impeller
Diffuser, impeller are oblique flow type, and diffuser is axial flow type, and in the outer circumferential side of impeller, guiding is configured with the upstream side of diffuser
Plate.”.
Prior art literature
Patent document
Patent document 1：Japanese Unexamined Patent Publication 2010-281231 publications
Patent document 2：Japanese Unexamined Patent Publication 2001-17358 publications
The content of the invention
The invention problem to be solved
Electric dust collector is due to the wind that works according to operating conditions such as plugged filter or the materials on floor for cleaning object
Significantly change is measured, it requires in the strong electric fan of big air quantity range attractive forces.
Electric fan described in patent document 1,2 rotates impeller (Impeller) by motor, produces air stream.
Boosted from the suction inlet leaked-in air of electric fan by impeller and speedup, be decelerated between diffuser vane, thus, flow into
The kinetic energy having to the air of diffuser is converted into pressure energy, and pressure rises.
Diffuser with blade can carry out excellent pressure on design point air quantity and recover, but in off-design point air quantity
On, because the fluid inlet angle to diffuser of the inlet angle of diffuser vane and air stream is inconsistent and diffuser performance reduce.Therefore,
Attraction with electric dust collector is high in design point air quantity, but the problem reduced in off-design point air quantity.
Pass through Radio masts (Cordless stick) type or the dust catcher driven with battery (2 primary cell) of autonomous type
Electric fan consumption electric power it is small, maximum quantity of wind is also small.Therefore, using the electronic of patent document 1,2 in these dust catchers
In the case of blower fan, have because maximum quantity of wind reduces, rubbish transporting power reduces, the problem of the attraction reduction of dust catcher.
In addition, in the technology described in patent document 1, by the conducting element of resin-made bearing of trend be divided into it is multiple and
Form, the conducting element of upstream side and the conducting element in downstream is concavo-convex and chimeric by what is be fitted together to.In addition, upstream side conducting element
On motor casing, the conducting element in downstream is chimeric with fan hub, makes each part chimeric and is fixed with adhesive.Therefore, group
Dress property is poor, due to the scale error of each part, it is possible to which fan hub is relative to rotary shaft meeting core shift or tilts installation, and existing can not
The problem of fan hub is maintained in assigned position.In addition, when the suction inlet of impeller and the suction inlet of fan hub by core shift or tilt peace
During dress, suppress the inlet seal degradation of the recycle stream between impeller inflow part and fan hub, the reduction of electric fan efficiency be present
Problem.
In addition, in the electric fan of in general electric dust collector, fan hub and being located through for impeller make to be configured at
The diffuser vane in impeller downstream contacts fan hub to carry out the positioning of the rotation direction of principal axis of fan hub.When big in order to improve
Air quantity scope, the particularly efficiency of Wind Volume side and use on-bladed diffuser when, it is difficult to carry out the positioning of fan hub, exist not
Fan hub and the problem in the gap (inlet seal performance) in impeller eye portion can suitably be kept.
In addition, in the technology that patent document 2 is recorded, the on-bladed diffuser portion between impeller and diffuser is configured with
Directing plate.Thereby, it is possible to which the convolution velocity component of the air flowed out from impeller is converted into direction of principal axis velocity component, but because draw
Guide plate is only by the side support of fan hub, so the both-side opening of rotation direction of principal axis.Therefore, the air being flowed into directing plate exists
Upstream side and the downstream flowing of direction of principal axis are rotated, (is expanded so can not swimmingly carry out axially downstream in directing plate
Dissipate device side) steering, the loss increase in directing plate, electric fan efficiency may reduce.
Present invention aim to address above-mentioned problem, there is provided the reliability of the chimeric holding of fan hub and motor casing is improved,
The electric fan of efficient small-size light-weight in bigger air quantity domain, and provide and improve the small of attraction in big air quantity domain
The electric dust collector of type.
For solving the method for problem
In order to solve above-mentioned problem, a representational electric fan of the invention is implemented as described below, including：With rotor and
The motor part of stator；The housing of the above-mentioned motor part of storage of one end open；It is arranged at the rotary shaft of above-mentioned rotor；It is fixed on
The rotating vane of the rotary shaft；It is configured at the demarcation strip of the above-mentioned motor part side of the rotating vane；Be arranged at above-mentioned housing
Open side and the above-mentioned rotating vane of covering fan hub, formed between the outer circumferential side and said fans shell of above-mentioned rotating vane
There is stream, above-mentioned housing and said fans shell are resin-mades, and the end of said fans shell can be chimeric with the end of above-mentioned housing.
In addition, in order to solve above-mentioned problem, a representational electric fan of the invention includes：With rotor and stator
Motor part；The housing of the above-mentioned motor part of storage of one end open；It is arranged at the rotary shaft of above-mentioned rotor；It is fixed on the rotation
The rotating vane of rotating shaft；It is configured at the demarcation strip of the above-mentioned motor part side of the rotating vane；Be arranged at opening for above-mentioned housing
Mouth side and the fan hub of the above-mentioned rotating vane of covering, formed with stream between the outer circumferential side and said fans shell of above-mentioned rotating vane
Road, directing plate is formed with the inside of said fans shell, the directing plate is with the upper surface of said fans shell and side upper
Fan hub interior contact is stated, above-mentioned housing and said fans shell are resin-made, the end of said fans shell and above-mentioned housing
End can be fitted together to.
The effect of invention
According to the present invention, the downstream of rotating vane is on-bladed diffuser, is fitted together to by fan hub end and housing, energy
Enough improve resin-made housing and the reliability of the chimeric holding of resin fan shell, using the teaching of the invention it is possible to provide the electric fan of small-size light-weight,
And the reduction by suppressing inlet seal performance can be provided, and high efficiency is maintained in big air quantity domain, thus big
Air quantity domain improve attraction small-sized electric dust collector.
In addition, using the teaching of the invention it is possible to provide small-sized electric dust collector, will be flowed out by using the directing plate of fan hub from rotating vane
Air stream convolution velocity component be converted to rotation direction of principal axis composition, reduce friction loss, and realize bending loss drop
It is low, high efficiency can be maintained in big air quantity domain, so improving attraction in big air quantity domain.
Problem, structure and effect beyond above-mentioned is clear and definite by the explanation of following embodiment.
Brief description of the drawings
Fig. 1 (a) is the outside drawing of the electric fan of first embodiment of the present invention.
Fig. 1 (b) is the longitudinal section of electric fan.
Fig. 2 (a) is the stereogram of the centrifugal impeller of first embodiment of the present invention, and (b) is the longitudinal section of centrifugal impeller.
Fig. 3 (a) is the stereogram of the fan hub of first embodiment of the present invention, and (b) is longitudinal section.
Fig. 4 is the explanation figure of the flowing in the blower fan portion for representing first embodiment of the present invention, and (a) is the amplification in blower fan portion
Longitudinal section, (b) are the sectional views of the line A-A of Fig. 1 (a) electric fan.
Fig. 5 (a) is the stereogram of the housing of first embodiment of the present invention, and (b) is rearview.
Fig. 6 (a) is the sectional view of Fig. 5 (a) line B-B, and (b) is the sectional view of Fig. 5 (a) line C-C.
Fig. 7 (a) is the enlarged drawing in the D portions shown in Fig. 6 (a), and (b) is amplification stereoscopic figure.
Fig. 8 is the longitudinal section of the electric fan of second embodiment of the present invention.
Fig. 9 (a) is the stereogram of the fan hub of second embodiment of the present invention, and (b) is longitudinal section.
Figure 10 is the explanation figure of the flowing in the blower fan portion for representing second embodiment of the present invention, is the section of Fig. 8 E-E lines
Figure.
Figure 11 is the longitudinal section of other fan hubs of second embodiment of the present invention.
Figure 12 is the stereogram using the electric dust collector of the electric fan of embodiment of the present invention.
Figure 13 is the sectional view of the main body of dust collector of Figure 12 electric dust collector.
Description of reference numerals
1 centrifugal impeller
2 demarcation strips
3 fan hubs
4 air suction inlets
5 rotary shafts
6 housings
7 rotor cores
8 stator cores
9 stator winding
10 bearings
11 bearings
12 springs
13 bearing caps
13a cooling fins
14 supports
15 screwed holes
16 fixing screws
17 openings
18 exhaust outlets
19 stator core fixing screws
20 projections
21 mounting holes
22 claw-like projections
23 cover plates
24 hub plates
25 blades
26 suction openings
27 concave grooves
28 through holes
29 boss
29a boss curved surfaces
30 pawls
31 upper plates
32 curved surfaces
33 side plates
34 recesses
35 flow into stream
36 flowing out stream
37 bridge portions
38 frameworks
39 screwed holes
40 rakes
41 installation portions
42 contact sites
43 directing plates
100 electric dust collector main bodys
200 electric fans
201 blower fan portions
202 motor parts
Embodiment
Hereinafter, an embodiment of the invention is illustrated referring to the drawings.In present embodiment example, rotating vane
Illustrated using centrifugal impeller.
(embodiment 1)
By Figure 12 and Figure 13, the electric dust collector 300 of one embodiment of the invention is illustrated.Figure 12 represents application
The stereogram of the electric dust collector of the electric fan of the present embodiment.As shown in figure 12,100 be to store the dust storage chamber for collecting dust
The main body of dust collector of the electric fan 200 (Figure 13) of 101 suction airflows needed with generation dust, 102 be installation vacuum cleaner main
The maintaining part of body 100,103 are disposed on the shank part of the one end of maintaining part 102, and 104 are disposed on the progress electricity of shank part
The switch portion of the on-off of dynamic blower fan 200.Sucking mouth 105, main body of dust collector are installed in the other end of maintaining part 102
100 and sucking mouth 105 connected by connecting portion 106.107 be the cradle to be charged to battery unit 108 (Figure 13).
In structure more than, when operating the switch portion 104 of shank part 103, the electronic of main body of dust collector 100 is accommodated in
Blower fan 200 operates, and produces suction airflow.Then, dust is sucked from sucking mouth 105, by connecting portion 106, dust is collected into
The dust storage chamber 101 of main body of dust collector 100.
Then, using the sectional view for the main body of dust collector 100 for schematically illustrating the electric dust collector shown in Figure 13, to dust catcher
Main body 100 illustrates.In the inside of main body of dust collector 100, electric fan 200, the driving for being configured with generation attraction are electronic
Circuit 109 and dust storage chamber 101 are used in the battery unit 108 of blower fan 200, driving.
Main body of dust collector 100 can be dismantled from maintaining part 102, be used as hand-held cleaners, on main body of dust collector 100
It is provided with main body shank part 110 and suction inlet opening 111.112 (Figure 12) are electronic wind when used as hand-held cleaners
The main body switch portion of the on-off of machine 200.In addition, main body switch 112 by main body of dust collector 100 even in being installed to maintaining part
It can also be operated when 102.
Then, the longitudinal section of the outside drawing of the electric fan shown in reference picture 1 (a), electric fan shown in (b), it is right
Electric fan 200 illustrates.The electric fan 200 is roughly divided into blower fan portion 201 and motor part 202.Blower fan portion 201 is by making
It is demarcation strip 2 and the storage of the side of motor part 202 configuration for the centrifugal impeller 1 of rotating vane, at the back side of the centrifugal impeller 1
The centrifugal impeller 1, the fan hub 3 of resin-made of demarcation strip 2 are formed.Demarcation strip 2 be it is discoideus, by fan hub 3 inner surface and
The external diameter of demarcation strip 2 forms the annulus stream for allowing air to flow into motor part 202.The upper surface of fan hub 3 is provided with air
Suction inlet 4.Centrifugal impeller 1 is thermoplastic resin system, is directly linked with rotary shaft 5.Here, in the present embodiment, rotation will be used as
The press-in of centrifugal impeller 1 of blade is fixed to rotary shaft 5, but can also be in the end set screw of rotary shaft 5, by centrifugal impeller 1
Fixed using fixing nut.
Motor part 202 is by being fixed in housing 6 rotor core (rotor) 7 for the rotary shaft 5 stored and being fixed on shell
The stator core (stator) 8 of body 6 is formed.Stator winding 9 is wound with around stator core 8, forms phase winding together.Mutually around
Group electrically connects with being arranged at the driving circuit 109 of electric fan 200.
Rotor core 7 is formed at the end of the opposite side in the end with being fixed with centrifugal impeller 1 of rotary shaft 5, by terres rares
Binding magnet form.The binding magnet of terres rares is made by mischmetal class Magnaglo and organic bond.
As the binding magnet of terres rares, such as samarium iron nitrogen magnet, neodium magnet etc. can be used.The one of rotor core 7 and rotary shaft 5 into
Shape.
In addition, in the present embodiment, rotor core 7 uses permanent magnet, but not limited to this, brushless dc can also be used
A kind of reluctance motor of motivation etc..
There is bearing 10,11 between centrifugal impeller 1 and rotor core 7, rotation is rotatably supported with rotary shaft 5
Axle 5.Spring 12 is configured with the state compressed between bearing 10 and bearing 11, precompressed is assigned to bearing 10, bearing 11.Axle
Hold 10,11 and spring 12 wrapped in bearing cap 13.Housing 6 is synthetic resin system, has the support 14 of fixing bearing lid 13.
The periphery of bearing cap 13 is provided with multiple coolings long on rotation direction of principal axis of the fin of the cooling as bearing 10,11
Fin 13a.Bearing cap 13 is nonmagnetic material system, by insert molding and integrated with resin-made housing 6.
In screwed hole 15 of the end of support 14 formed with edge rotation direction of principal axis extension of resin-made housing 6.In screw thread
Hole 15 can screw togather fixing screws 16, and by screwing togather for fixing screws 16, demarcation strip 2 is fixedly set in the housing 6 of resin-made.
Formed with annulus stream between the inner surface of fan hub 3 and the periphery of demarcation strip 2.With the area ratio of annulus stream
The big mode of the discharge area of centrifugal impeller 1 sets the external diameter of demarcation strip 2.Thus, suppress annulus flow path portion flow velocity increase,
That is the loss increase of annulus flow path portion.In addition, by making annulus flow path area bigger than the discharge area of centrifugal impeller 1, make separation
The external diameter of plate 2 is bigger than the external diameter of centrifugal impeller 1, is played a role between demarcation strip 2 and fan hub 3 as on-bladed diffuser,
So fan efficiency can be improved.
By the way that demarcation strip 2 to be arranged on to the back side i.e. side of motor part 202 of centrifugal impeller 1, caused by suppressing centrifugal impeller 1
The disorder of air stream in motor part 202, thus suppress the increase of the stream loss of motor part 202, in addition, can reduce
The plectane friction loss of centrifugal impeller 1.
The opening 17 being flowed into for air in housing 6 is provided with housing 6 and air is discharged to electric fan
The exhaust outlet 18 of 200 outside.The stator core 8 for being configured at the end of housing 6 is fixed on housing 6 using fixing screws 19.
Then, the flowing of the air in electric fan 200 is illustrated.When drive motor portion 202 makes as rotating vane
When centrifugal impeller 1 rotates, air flows into from the air suction inlet 4 of fan hub 3, is flowed into centrifugal impeller 1.Leaked-in air exists
Boosting and speedup in centrifugal impeller 1, flow out from the periphery of centrifugal impeller 1.The air stream flowed out from centrifugal impeller 1, from by fan
The annulus stream that the inner surface of shell 3 and the periphery of demarcation strip 2 are formed is flowed into motor part 202.
The air of motor part 202 is flowed into, is flowed into from the opening 17 of housing 6 inside housing 6.Utilize the inflow air
The cooling fins 13a of cooling bearing lid 13, via the cooling bearing 10,11 of bearing cap 13.In addition, cooling rotor core 7, stator iron
Discharged after core 8, stator winding 9 to outside.Thus, each portion in housing 6 is cooled.It is flowed into one of the air stream of housing 6
Divide and discharged from the exhaust outlet 18 of housing 6 to outside.
There is projection 20 in the end set of fan hub 3, and be provided with the mounting hole 21 that fan hub 3 is fixed to housing 6.
The end set of the side of blower fan portion 201 of housing 6 has claw-like projection 22, is fitting to connection with the mounting hole 21 of fan hub 3.
Then, the blower fan portion 201 of present embodiment example is illustrated using Fig. 2~Fig. 4.Fig. 2 (a) is the implementation of the present invention
The stereogram of the centrifugal impeller of example, (b) are the sectional views of centrifugal impeller, and Fig. 3 (a) is the stereogram of the fan hub of the present invention, (b)
It is sectional view, Fig. 4 is the explanation figure of the flowing in the blower fan portion for representing one embodiment of the invention, and (a) is that the amplification in blower fan portion is cut
Face figure, (b) are the sectional views of the line A-A of Fig. 1 (a) electric fan.
First, the centrifugal impeller 1 of the rotating vane as one embodiment of the present of invention is illustrated using Fig. 2.This
The centrifugal impeller 1 of one embodiment of invention is made up of cover plate 23, hub plate 24 and more blades 25.Hub plate 24 and blade 25 are by warm
Plastic resin is integrally formed.The cover plate 23 of thermoplastic resin is in circular suction opening of the central portion formed with suction air
26。
In the flowpath face of cover plate 23, formed with concave groove 27, it is extended external diameter with 25 corresponding position of blade
Side.Concave groove 27 is provided with through hole 28.In the center of hub plate 24 formed with the convex of the convex form for inserting rotary shaft 5 and fixing
Platform 29.The blade 25 integrally formed with hub plate 24 is disposed at equal intervals in the circumferential, is had with from internal side diameter towards footpath direction
Outside is gone, the blade shape retreated to direction of rotation.Boss 29 is bent formed with boss in a manner of from direction of principal axis towards footpath direction
Face 29a.The pawl 30 formed with overshooting shape and the rib of welding in the upper surface of blade 25.Make the pawl 30 of the overshooting shape of blade 25 with
The through hole 28 of cover plate 23 engages, the concave groove of cover plate 23 27 engages with blade 25, and by pawl 30 and rib is welded by welding processing
Engagement, is consequently formed centrifugal impeller 1.
Rib is welded in order to melt in the concave groove 27, between making the volume ratio of welding rib when recess groove 27 inserts blade 25
The small volume of gap.That is, the resin material that can suppress to dissolve overflows into the stream of centrifugal impeller 1.In addition, the weldering because of blade 25
Rib is dissolved and welded with cover plate 23, so the leakage current between blade 25 can be prevented.In the present embodiment, in order to determine the He of cover plate 23
The position of blade 23, cover plate 23 is provided with through hole 28, but not limited to this, can also form the recess shapes not penetrated, only
Will positioning chimeric with the pawl 30 of blade 25 and that cover plate 23 and blade 25 can be carried out, can be any shape.
In addition, being provided with convex portion 24a in the periphery of the rear side of the blade 25 of hub plate 24, centrifugal impeller 1 is rotated, is passed through
Convex portion 24a is cut, amendment can be balanced.Thereby, it is possible to reduce the unbalance amount of centrifugal impeller 1, vibration can be realized or made an uproar
The reduction of sound.
Then, using Fig. 3, the fan hub 3 of one embodiment of the present of invention is illustrated.One embodiment of the present of invention
Fan hub 3 cover centrifugal impeller 1 as rotating vane from foreign side, and including：It is the upper plate 31 of toroidal during vertical view；With it is upper
The curved surface 32 that the peripheral part of plate 31 continuously axially extends；With the circular side plate 33 extended from curved face part 32.In wind
The end of the 31 opposite side of upper plate of the side plate 33 of fan case 3 is conformed with 20, and is provided with the peace that fan hub 3 is fixed on to housing 6
Fill hole 21.
The center of the upper plate 31 of fan hub 3 is provided with air suction inlet 4.Set than air suction inlet 4 by outside diameter
There is recess 34, the suction opening 26 of centrifugal impeller 1 is configured with recess 34.The suction opening 26 of fan hub 3 and centrifugal impeller 1
Front end there are following constructions：Centrifugal impeller 1 is configured with a manner of with small gap, is reduced by centrifugal impeller 1 to rise
The air capacity that the air of pressure circulates to the side of suction opening 26 of centrifugal impeller 1., can by the configuration seal member in recess 34
Sealing effectiveness is improved, can further improve fan efficiency.
Then, using Fig. 4, the flowing in the blower fan portion of the 1st embodiment of the present invention is illustrated.When drive motor makes conduct
When the centrifugal impeller 1 of rotating vane rotates, air is flowed into centrifugal impeller 1 from the air suction inlet 4 of fan hub 3.Be flowed into from
The air of lobus cardiacus wheel 1 flows into as flowing into stream 35 from the direction of rotary shaft 5, is diverted into radial direction stream.Hereinafter, will be from sky
Flowing of the aspiration entrance 4 to the direction of rotary shaft 5 is referred to as direction of principal axis stream.Boosting and speedup in centrifugal impeller 1, by centrifuging leaf
Wheel 1 turns into flowing out stream 36.Flowing out stream 36 has the flowing composition in convolution direction, is contacted with the inner surface of fan hub 3, while convolution
While turning into direction of principal axis stream, the annulus stream formed from the periphery of the inner surface by fan hub 3 and demarcation strip 2 is flowed into housing
6.Because fan hub 3 has curved surface 32, it can swimmingly turn to as direction of principal axis stream, loss can be reduced.Thereby, it is possible to carry
High fan efficiency.In addition, because band vane diffuser is not used, so the big air quantity domain beyond design point air quantity can obtain
High efficiency.
Then, the motor part 202 of first embodiment of the present invention is illustrated using Fig. 5~Fig. 7.
Fig. 5 (a) is the stereogram of the housing of one embodiment of the present of invention, and Fig. 5 (b) is rearview, and Fig. 6 (a) is Fig. 5
(a) sectional view of line B-B, (b) are the sectional views of Fig. 5 (a) line C-C, and Fig. 7 (a) is the amplification in the D portions shown in Fig. 6 (a)
Figure, (b) are amplification stereoscopic figures.
Housing 6 is plastic, has the support 14 for fixing the bearing cap 13 of interior bearing packet 10,11.Supporting
Portion 14 is in substantially dual cylindrical shape, positioned at the anterior inner side of housing 6.Substantially cylindrical portion 14a in the inner side of support 14 consolidates
Surely there is the bearing cap 13 made by nonmagnetic material.Substantially cylindrical portion 14b in the periphery of bearing cap 13 is provided with bearing
10th, the fin of 11 cooling multiple cooling fins 13a long i.e. on rotation direction of principal axis, the support 14 1 with housing 6
Body shapes.Because being provided with cooling fins 13a complicated shape in the periphery of bearing cap 13, so making and pressing down by using casting die
Production cost processed, high dimensional accuracy can be obtained.It is preferably non-as bearing cap 13 and cooling fins 13a use raw material
Magnetic metal and the high aluminium alloy of pyroconductivity.
In screwed hole 15 of the end of support 14 formed with edge rotation direction of principal axis extension of resin-made housing 6.In screw thread
Hole 15 can screw togather fixing screws 16, and by screwing togather for fixing screws 16, demarcation strip 2 is fixedly installed on housing 6.Support 14
Peripheral part be connected by bridge portion 37 with substantially cylindric framework 38.Have in end set existing for the bridge portion 37 of framework 38 solid
Determine the screwed hole 39 of stator core 8.Fixing screws 19 can be screwed togather in screwed hole 39, will be fixed by screwing togather for fixing screws 19
Sub- iron core 8 is fixedly installed on housing 6.In addition, the end set of the side of blower fan portion 201 on framework 38 has claw-like projection 22,
It is fitting to connection with the mounting hole 21 of fan hub 3.Thereby, it is possible to the positioning precision in the direction for the rotary shaft 5 for ensuring fan hub 3, leads to
Holding can be reliably fitted together to by crossing the end of resin fan shell 3 and the end of resin-made housing 6.By improving centrifugal impeller 1
With the positioning precision of fan hub 3, the deviation in the gap of the recess 34 of centrifugal impeller 1 and fan hub 3 can be reduced, electricity can be realized
The performance of dynamic blower fan 200 improves and reduced aberrations in property during volume production.In addition, centrifugal impeller 1 does not contact with fan hub 3, can
There is provided reliability high electric fan 200.
Multiple openings 17 formed between bridge portion 37 can also be set on housing 6 and do not cool down rotor core 7, stator
Iron core 8, the exhaust outlet 18 of stator winding 9 and the portion's of directing out discharge air are to allow air to flow into housing 6.
The inner side of framework 38 is provided with rake 40.Formed as from the periphery of the inner surface by fan hub 3 and demarcation strip 2
Annulus stream outflow air by rake 40 easily flow into opening 17 structure.From the leaked-in air of opening 17 with setting
Contacted in the cooling fins 13a of bearing cap 13.The heat as caused by bearing 10,11 is delivered to by nonmagnetic metal material by heat transfer
Expect the bearing cap 13 made, radiated by cooling fins 13a, effectively cooling bearing 10,11.
Even if housing 6 is resin-made, also can by as caused by bearing 10,11 heat by being arranged at the cooling of bearing cap 13
Fin 13a effectively radiates, being capable of effectively cooling bearing 10,11, using the teaching of the invention it is possible to provide the high electric fan 200 of reliability.And then
Because using housing 6 as resin-made, can lightweight, the lightweight of electric fan 200 can be made.In the present embodiment, pass through
Insert molding makes bearing cap 13 and the integration of resin-made housing 6, but bearing cap 13 can also be pressed into resin-made housing 6.
Chimeric with the inner surface of fan hub 3 substantially justify as shown in fig. 7, being formed in the end face of the side of fan hub 3 of framework 38
The installation portion 41 of barrel shape and the contact site 42 with the end contact of fan hub 3.Therefore, installation portion 41 and contact site 42 are passed through
The positioning of fan hub 3 can easily be carried out.In addition, the claw-like projection 22 of framework 38 is substantially triangular prism shape, it is big by one
Cause quadrilateral surface to be installed on the installation portion 41 of framework 38, form claw-like projection.Substantially quadrilateral surface 22a landform vertical with rotary shaft
Into other substantially quadrilateral surface 22b are formed obliquely with rotary shaft.
By fan hub 3 to housing 6 install when, the end face of projection 20 and the inclining for claw-like projection 22 of the fan hub 3 of resin-made
It is oblique into substantially quadrilateral surface 22b contact, and then be pressed into fan hub 3, thus projection 20 to outside diameter deform, claw-like projection 22
It is fitting to connection with the mounting hole 21 of fan hub 3.When mounting hole 21 and claw-like projection 22 are fitting to connection, pass through the big of claw-like projection 22
Quadrilateral surface 22a is caused to be securely fixed fan hub 3.
The claw-like projection 22 of the mounting hole 21 of the fan hub 3 of resin-made and the housing 3 of resin-made is fitting to connection, and passes through fan
The end face of shell 3 contacts with the contact site 42 of housing 6, it can be ensured that the positioning precision in the direction of the rotary shaft 5 of fan hub 3.
Because the positioning precision in centrifugal impeller 1 and the direction of the rotary shaft 5 of fan hub 3 improves, so as to reduce centrifugation
The deviation in the gap of the recess 34 of impeller 1 and fan hub 3, it can realize that the performance raising of electric fan 200 and reduction performance are inclined
Difference.In addition, centrifugal impeller 1 does not contact with fan hub 3, using the teaching of the invention it is possible to provide the high electric fan 200 of reliability.Present embodiment example
In, by the mounting hole 21 of fan hub 3 and the claw-like projection 22 of housing 6, the installation of fan hub 3 is carried out, but can also be in fan
The inner surface setting internal thread of shell 3, external screw thread is set in the periphery of the installation portion 41 of housing 3, by the chimeric of screw thread, fixed wind
Fan case 3.
The electric fan 200 of present embodiment example from the description above, with the inner surface of fan hub 3 and demarcation strip 2
The area of annulus stream between the periphery mode bigger than the discharge area of centrifugal impeller 1 sets the external diameter of demarcation strip 2, so energy
It is enough to suppress the increase in the flow velocity of annulus flow path portion i.e. in the loss of annulus flow path portion.
In addition, by making annulus flow path area bigger than the discharge area of centrifugal impeller 1, and make the external diameter ratio of demarcation strip 2 from
The external diameter of lobus cardiacus wheel 1 is big, so as to be played a role by the use of demarcation strip 2 and fan hub 3 as on-bladed diffuser, so can enter one
Step improves fan efficiency.Thus, in big air quantity domain, the electric fan of efficient small-size light-weight can be obtained.
And then the side of motor part 202 at the back side by the way that demarcation strip 2 to be arranged on to centrifugal impeller 1, suppress centrifugal impeller 1
Caused by air flow in motor part 202 disorder, the increase that the stream thereby, it is possible to suppress motor part 202 loses,
It additionally is able to reduce the plectane friction loss of centrifugal impeller 1, it is possible to increase fan efficiency.
In addition, claw-like projection 22 and tree by making the substantially quadrangular with the mounting hole of housing 3 21, resin-made housing 6
The projection 20 of the end of fat fan hub 3 is fitting to connection, and the substantially quadrilateral surface 22a of claw-like projection 22 can be utilized to be securely fixed
Fan hub 3, it can be ensured that the positioning precision of the direction of principal axis of fan hub 3.Thereby, it is possible to reduce the recessed of centrifugal impeller 1 and fan hub 3
The deviation in the gap in portion 34, it can realize that the performance of electric fan 200 improves and reduced aberrations in property.In addition, centrifugal impeller 1 with
Fan hub 3 does not contact, and can obtain the high electric fan 200 of reliability.
And then because fan hub 3, housing 6, centrifugal impeller 1 are resin-made, the lightweight of electric fan 200 can be made.
By the way that electric fan 200 is loaded into electric dust collector, the reliability of electric dust collector is high, can carry out miniaturization, energy
It is enough to improve attraction in big air quantity domain.
(embodiment 2)
Then, the 2nd embodiment example is illustrated using Fig. 8~Figure 10.Fig. 8 is second embodiment of the present invention example
The longitudinal section of electric fan, Fig. 9 (a) are the stereograms of fan hub, and (b) is longitudinal section, and Figure 10 is the stream for representing blower fan portion
Dynamic explanation figure, it is the sectional view of the line D-D of Fig. 8 electric fan.Basic structure with above-mentioned 1st embodiment example phase
Together, so for identical key element, using identical symbol, the description thereof will be omitted.
In present embodiment example, blower fan portion 201 is by the centrifugal impeller 1 as rotating vane, the back of the body in the centrifugal impeller 1
Face be the side of motor part 202 configuration demarcation strip 2 and store the centrifugal impeller 1, demarcation strip 2 resin-made the structure of fan hub 3
Into.Demarcation strip 2 is discoideus, is formed by the inner surface of fan hub 3 and the external diameter of demarcation strip 2 and is allowed air to flow into motor part
202 annulus stream.Directing plate 43 is formed with the inner surface of fan hub 3.Fan hub 3 includes：Overlook the upper of toroidal
Plate 31；The curved surface 32 continuously extended with the peripheral part of upper plate 31 to the direction of rotary shaft 5；With the annulus extended from curved face part 32
The side plate 33 of shape.The interior contact of directing plate 43 and curved surface 32 and side plate 33 in fan hub 3.Directing plate 43 with rotary shaft 5
The cross-section vertically cut off, directing plate 43 and adjacent 43 nonoverlapping mode of directing plate are set.In addition, in fan hub 3
Air suction inlet 4 is provided with upper plate 31.In addition, the end set in the side plate 33 of fan hub 3 has projection 20, and be provided with by
Fan hub 3 is fixed on the mounting hole 21 of housing 6.In addition, with the annulus formed by the inner surface of fan hub 3 and the external diameter of demarcation strip 2
The area of the stream annulus stream mode bigger than the discharge area of centrifugal impeller 1 sets the external diameter of demarcation strip 2.
As shown in Figure 10, there is convolution velocity component from the flowing out stream 36 of the outflow of centrifugal impeller 1 as rotating vane.Cause
This, in the case where being not provided with the directing plate 43 of fan hub 3, the air flowed out from centrifugal impeller 1 is from the interior table by fan hub 3
Track (length of streak line) of the annulus stream that face and the periphery of demarcation strip 2 are formed untill housing 6 is flowed into is elongated.By
Fan hub 3 sets directing plate 43, and the convolution velocity component of flowing out stream 36 can be converted to swimmingly to rotation direction of principal axis composition, energy
It is enough further to shorten in the track of flow path, so friction loss can be reduced.Thereby, it is possible to improve fan efficiency.
In addition, by making directing plate 43 and adjacent directing plate 43 not overlapping, by directing plate 43 and adjacent directing plate 43
The flow path area of the entrance side of formation does not diminish.Consequently, because being flowed into the flow velocity of directing plate 43 does not increase, so can reduce
The friction loss of the entrance of directing plate 43.In the operating of big distinguished and admirable side compared with design point, because directing plate 43 is not overlapping, institute
So that in the inlet portion of directing plate 43, the flow velocity than being flowed out from centrifugal impeller 1 is slow, so can suppress the loss in directing plate 43.
That is, it is able to maintain that high efficiency in big air quantity domain.
And then directing plate 43 connects in the inside of side plate 33 with the curved surface 32 of fan hub 3, so fan hub 3 can be improved
Intensity, the deformation of fan hub 3 can be reduced, the deviation in the gap of the recess 34 of centrifugal impeller 1 and fan hub 3 can be reduced.
Performance thereby, it is possible to realize electric fan 200 improves and reduced aberrations in property.In addition, centrifugal impeller 1 does not connect with fan hub 3
Touch, the high electric fan 200 of reliability can be obtained.
And then by strengthening the intensity of fan hub 3, even if not increasing the thickness of slab of fan hub 3, it can also improve fan hub 3
Intrinsic frequency, being capable of lightweight.In addition, because intrinsic frequency can be improved, so vibration, noise can also reduce.
In addition, with the area of the annulus stream between the periphery of the inner surface of fan hub 3 and demarcation strip 2 than centrifugal impeller 1
The big mode of discharge area set the external diameter of demarcation strip 2, so can suppress to exist in the increase of the flow velocity of annulus flow path portion
The loss of annulus flow path portion.
And then the side of motor part 202 at the back side by the way that demarcation strip 2 to be arranged on to centrifugal impeller 1, suppress centrifugal impeller 1
Caused by air flow in motor part 202 disorder, the increase that the stream thereby, it is possible to suppress motor part 202 loses,
It additionally is able to reduce the plectane friction loss of centrifugal impeller 1, it is possible to increase fan efficiency.
In addition, in present embodiment example, directing plate 43 is illustrated using linear flat board, but vertical with rotary shaft 5
The cross-section of cut-out, or arc-shaped.
Then, other fan hubs of second embodiment of the present invention are illustrated by Figure 11.Figure 11 is the fan hub of the present invention
Longitudinal section.As shown in figure 11, multi-disc directing plate 43, directing plate 43 and fan hub 3 are integrally formed in the inner surface of fan hub 3
Curved surface 32 and side plate 33 fan hub 3 interior thereof.Connected the drawing of the opposite side of side using the curved surface 32 with directing plate 43
The length of guide plate 43 structure shorter than the length to connect with curved surface 32, other parts are identical with embodiment before.
Bigger than design point Wind Volume side, the outflow angle of the flowing out stream 36 from centrifugal impeller 1.That is, circle round speed into
Divide smaller than design point or low air quantity side.Therefore, flowing out stream 36 encounters the side of directing plate 43, the inner surface of blast wind fan case 3,
Drastically bent on the direction of rotary shaft 5.The length of the directing plate 43 of the opposite side of the side to connect with curved surface 32 of directing plate 43
Short, thereby, it is possible to the air for preventing from being flowed into the side of motor part 202 from directing plate 43 to be obstructed, and wind can be improved in Wind Volume side
The efficiency in machine portion 201.
In addition, the present invention is not limited to the above embodiments, and include various modifications example.
For example, the above embodiments illustrate for the readily apparent present invention, it is to explain, but be not necessarily restriction
In the invention for the entire infrastructure for possessing explanation.In addition, a part for the composition of certain embodiment can be replaced into other embodiments
Structure, in addition it is possible in the structure of certain embodiment increase other embodiments structure.In addition, for each embodiment
A part for structure, the addition of other structures can be carried out, eliminates, replace.
Claims (5)
- A kind of 1. electric fan, it is characterised in that including：Motor part with rotor and stator；The housing of the storage motor part of one end open；It is arranged at the rotary shaft of the rotor；It is fixed on the rotating vane of the rotary shaft；It is configured at the demarcation strip of the motor part side of the rotating vane；WithThe fan hub of the open side of the housing and the covering rotating vane is arranged at,Formed with stream between the outer circumferential side and the fan hub of the rotating vane,The housing and the fan hub are resin-mades, and the end of the fan hub can be chimeric with the end of the housing.
- A kind of 2. electric fan, it is characterised in that including：Motor part with rotor and stator；The housing of the storage motor part of one end open；It is arranged at the rotary shaft of the rotor；It is fixed on the rotating vane of the rotary shaft；It is configured at the demarcation strip of the motor part side of the rotating vane；WithThe fan hub of the open side of the housing and the covering rotating vane is arranged at,Formed with stream between the outer circumferential side and the fan hub of the rotating vane,Directing plate is formed with the inside of the fan hub,The upper surface and side of the directing plate and the fan hub in the fan hub interior contact,The housing and the fan hub are resin-mades, and the end of the fan hub can be chimeric with the end of the housing.
- 3. electric fan as claimed in claim 1 or 2, it is characterised in that：There is projection in the end set of the fan hub, mounting hole be provided with the projection,There is claw-like projection in the end set of the housing,The mounting hole can be chimeric with the claw-like projection.
- 4. such as electric fan according to any one of claims 1 to 3, it is characterised in that：The area of annulus stream between the periphery of the inner surface of the fan hub and the demarcation strip is than the rotating vane Discharge area is big.
- A kind of 5. electric dust collector, it is characterised in that：Including electric fan according to any one of claims 1 to 4.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016-123167 | 2016-06-22 | ||
| JP2016123167A JP6818443B2 (en) | 2016-06-22 | 2016-06-22 | Electric blower and vacuum cleaner equipped with it |
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| Publication Number | Publication Date |
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| CN107524616A true CN107524616A (en) | 2017-12-29 |
| CN107524616B CN107524616B (en) | 2019-12-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710479475.7A Active CN107524616B (en) | 2016-06-22 | 2017-06-22 | Electric fan and electric dust collector with same |
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| Country | Link |
|---|---|
| JP (1) | JP6818443B2 (en) |
| CN (1) | CN107524616B (en) |
| TW (1) | TWI644026B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111070996A (en) * | 2018-10-18 | 2020-04-28 | 电装国际美国公司 | Vehicle HVAC airflow system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP6434184B1 (en) * | 2018-06-21 | 2018-12-05 | 株式会社Ｐａｓｏｃ | Air blower for air blow type costume |
| CN109185196B (en) | 2018-09-30 | 2020-04-10 | 广东威灵电机制造有限公司 | Electric fan |
| CN111852949B (en) * | 2019-04-28 | 2022-05-03 | 广东美的环境电器制造有限公司 | Air supply device and air supply equipment |
| CN113426793A (en) * | 2021-05-18 | 2021-09-24 | 武汉理工大学 | Welding smoke and dust device that induced drafts based on air multiplication technique |
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Also Published As
| Publication number | Publication date |
|---|---|
| JP2017227156A (en) | 2017-12-28 |
| TW201800671A (en) | 2018-01-01 |
| JP6818443B2 (en) | 2021-01-20 |
| CN107524616B (en) | 2019-12-31 |
| TWI644026B (en) | 2018-12-11 |
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