CN105986554A - Air blower - Google Patents
Air blower Download PDFInfo
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- CN105986554A CN105986554A CN201510064758.6A CN201510064758A CN105986554A CN 105986554 A CN105986554 A CN 105986554A CN 201510064758 A CN201510064758 A CN 201510064758A CN 105986554 A CN105986554 A CN 105986554A
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- dryer
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Abstract
The invention provides an air blower which comprises a shell, a motor, an axial fan, an air blowing pipe and a duct, wherein an air inlet is formed in the shell; air enters from the air inlet; the motor is located in the shell; the axial fan is driven by the motor to rotate to generate an air flow; the axial fan comprises matched and connected with the motor and a plurality of blades mounted on the hub; the air blowing pipe is connected with the shell and is provided with an air outlet; the air flow is blown out of the air outlet; the duct is used for guiding the air flow to move toward the air outlet; the diameter of the axial fan is less than 88mm; the rotating speed of the motor is more than 21000rpm. Compared with the prior art, the air blower provided by the invention has the advantages that the small-diameter fan is driven at a high rotating speed, the power consumption is low, the higher air-blowing efficiency is acquired, the heavier leaves on the lawn and the leaves located in the gaps can be conveniently blown.
Description
Technical field
The present invention relates to a kind of electric tool, especially a kind of hair-dryer.
Background technology
Along with the continuous expansion of city's green areas, park, highway, public place greenbelt throughout the whole nation
Various places, lawn trimming tool is also widely used, and hair-dryer is exactly one of which.
In the hair-dryer of currently used aerofoil fan, in order to improve the efficiency guiding air-flow, motor is arranged on
Outside duct.In this kind of novel hair-dryer, whole with fan in overall dimensions and the fan hub of aerofoil fan
On the design parameters such as the ratio layout of body, and motor speed arranges and is not combined with power consumption by aspect of blowing efficiency
Getting up and sufficiently consider, and cause the wind speed of complete machine, air quantity less, aspect of blowing efficiency is relatively low, is difficult to blow
Though play the aspect of blowing efficiency of the heavier leaves dropped on lawn and the leaves being positioned in crack etc. or complete machine
To ensureing but power consumption is the highest, using battery bag when carrying out energy supply, the working time that blowing function maintains is shorter.
It is therefore contemplated that one can provide high aspect of blowing efficiency, and the hair-dryer that power consumption is relatively low.
Summary of the invention
For overcoming the defect of prior art, the technical problem to be solved is to provide a kind of high blowing effect
Rate, and the hair-dryer that power consumption is relatively low.
For solving the problems referred to above, the technical scheme is that
A kind of hair-dryer, including: housing, described housing is provided with air inlet, and air enters from described air inlet
Enter；Motor, is positioned at described enclosure interior；Aerofoil fan, is driven by described motor and rotates and produce air-flow,
Described aerofoil fan includes the wheel hub connected with described motor and multiple blade being arranged on described wheel hub；Blow
Airduct, connects described housing and has air outlet, and described air-flow blows out from described air outlet；Duct, is used for
Air-flow is guided to move to described air outlet；The diameter of described aerofoil fan is less than 88 millimeters, turning of described motor
Speed is more than 21000 revs/min.
Preferably, described aerofoil fan is arranged between motor and duct.
Preferably, the fan axis of described aerofoil fan overlaps with the centrage of described blower.
Preferably, the diameter of described aerofoil fan is not less than 50 millimeters.
Preferably, a diameter of 82 millimeters of described aerofoil fan.
Preferably, the tachometer value of described motor is not more than 50000 revs/min.
Preferably, the diameter of described wheel hub and the ratio of described aerofoil fan diameter are within the scope of 0.1-0.7.
Preferably, the ratio of the diameter of the diameter of described wheel hub and described aerofoil fan 0.3-0.5 scope it
In.
Preferably, the diameter of described wheel hub is 0.34 with the ratio of the diameter of described aerofoil fan.
Preferably, described aerofoil fan also includes that circumference connects band, and it is all around connecting that described circumference connects band
Blade.
Preferably, the distance that described circumference connects between band and described inner walls is not more than 5 millimeters.
Preferably, the distance that described circumference connects between band and described inner walls is 1 millimeter.
Preferably, the blade of described aerofoil fan rotates the plane of rotation forming annular, the area of described air outlet
With described plane of rotation area ratio within the scope of 0.75-1.1.
Preferably, the air quantity of described hair-dryer is more than 370cfm.
Preferably, the inwall of the housing connected with described blower is little with the angle of the centrage of described blower
In equal to 5 degree.
Preferably, the outer wall of the blower connected with described housing is little with the angle of the centrage of described blower
In equal to 5 degree.
Compared with prior art, in the present invention, the diameter of the aerofoil fan of hair-dryer is less than 88 millimeters, and motor is defeated
The rotating speed of shaft is more than 21000 revs/min, and logical excessive speeds drives minor diameter fan, and power consumption is less, and permissible
Obtain higher aspect of blowing efficiency, conveniently blow afloat the heavier leaves in lawn and the leaves etc. being positioned in crack.
Accompanying drawing explanation
The purpose of invention described above, technical scheme and beneficial effect can by following can be real
The detailed description of the specific embodiment of the existing present invention, describes in combination with accompanying drawing and clearly obtains.
Identical label and symbol in accompanying drawing and description are used for representing element that is identical or that be equal to.
Fig. 1 is the overall schematic of the hair-dryer of first embodiment of the invention.
Fig. 2 is the decomposing schematic representation of the internal structure of the hair-dryer in Fig. 1.
Fig. 3 is the schematic diagram of the internal structure of the hair-dryer in Fig. 1.
Fig. 4 is the enlarged diagram in the B region of the hair-dryer in Fig. 3.
Fig. 5 is the schematic perspective view of the first support of the hair-dryer in Fig. 1.
Fig. 6 is the sectional view of the duct linearly AA of the hair-dryer in Fig. 3.
Fig. 7 is the schematic perspective view of the fan of the hair-dryer in Fig. 2.
Fig. 8 be at the hair-dryer in Fig. 1 in working order in generalized section.
Fig. 9 is the top view of the hair-dryer shown in Fig. 8.
Figure 10 is the schematic diagram of the air outlet of the hair-dryer in Fig. 1.
Figure 11 is the enlarged diagram in the C region of hair-dryer in Figure 10.
Figure 12 is the overall schematic of the hair-dryer of second embodiment of the invention.
100, hair-dryer 101, longitudinal axis 102, blowing assembly
103, air draught assembly 200, housing 201, upstream region
202, downstream area 203, air inlet 204, circle zone
205, transitional region 206, safety guard 207, labyrinth passage
208, first passage 209, second channel 300, motor
301, motor shaft 302, stator 303, rotor
400, duct 401, deflection cone 402, stator blade
403, duct outer housing 404, protective cover 405, shell
406, cone-shaped cavity 407, fixing cover 500, fan
501, fan axis 502, blade 503, circumference connect band
504, wheel hub 600, blower 601, air outlet
602, gas channel 700, handle 701, control switch
703, grip part 707, first axle the 709, second axis
800, supporting construction the 801, first support the 802, second support
803, connector 804, fixed cell 805, inner ring
806, outer ring 807, support member the 808, first circulating area
809, perforation 810, reinforcement the 811, second circulating area
S1, plane of rotation area S2, air outlet area S4, circle zone cross wind area
S5, transitional region cross wind area D1, fan diameter D2, hub diameter
α, inwall angle β, outer wall angle G, center of gravity
L, fore-and-aft distance
Detailed description of the invention
Below in conjunction with the accompanying drawings presently preferred embodiments of the present invention is described in detail so that advantages of the present invention and
Feature can be easier to be readily appreciated by one skilled in the art, thus makes protection scope of the present invention apparent
Clear and definite defines.
It it is the hair-dryer 100 of first embodiment of the invention shown in Fig. 1 to Fig. 7.Hair-dryer 100 includes housing
200, motor 300, duct 400, fan 500, blower 600.Wherein, motor 300, duct 400,
Fan 500 is arranged in housing 200.Blower 600 connects housing 200.Blower 600 and housing
200 connect formation gas channel 602.Blower 600 is provided with air outlet 601, and air is from gas channel 602
Move to air outlet 601 and blow out from air outlet 601, be used for blowing away ground fallen leaves, rubbish.Motor
300 have motor shaft 301, and motor shaft 301 is connected with fan 500 and drives fan 500 to rotate so that wind
Fan 500 can rotate around its fan axis 501, thus drives air to move formation air-flow, such as arrow in Fig. 3
Shown in head.Certainly, motor shaft 301 can also connect fan 500 by drive mechanism.Drive mechanism is permissible
It is the common structures such as epicyclic train..Gas channel 602 includes upstream region 201 and downstream area 202,
From upstream region 201, the direction to downstream area 202 is defined as longitudinal direction.Air substantially longitudinally moves.And
And upstream region 201 is positioned at longitudinal side of fan 500, downstream area 202 is positioned at the vertical of fan 500
To opposite side.Hair-dryer 100 defines the longitudinal axis 101 extended longitudinally.In the present embodiment,
Fan 500 is preferably aerofoil fan.As it is shown in fig. 7, aerofoil fan includes wheel hub 504 and blade 502.
The blade 502 of aerofoil fan rotates the bearing of trend that air-flow moving direction is fan axis 501 formed, also
That is, fan axis 501 extends longitudinally equally, and overlaps with longitudinal axis 101.Aerofoil fan
Blade 502 rotate formed plane of rotation, this plane of rotation vertical longitudinal axis 101 is arranged.Duct 400 is compared
Arrange closer to fan 500 in blower 600.Being additionally provided with air inlet 203 on housing 200, air is from entering
Air port 203 enters into the inside of housing 200.In this preferred embodiment, air inlet 203, motor 300,
Fan 500 and duct 400 are successively along longitudinal arrangement.Wherein, air inlet 203 with air outlet 601 vertical
Projection in the plane of longitudinal axis 101 at least partly overlaps.Upstream region 201 refers to from air inlet 203
Region between place, the center plane of fan 500, downstream area 202 refers to the center from fan 500
Place plane is to the region between air outlet 601.When fan 500 carries out rotary work, extraneous air
The inside of housing 200 is entered into, after passing sequentially through fan 500 and duct 400, from position from air inlet 203
Air outlet 601 in blower 600 blows out.
As is illustrated by figs. 11 and 12, air inlet 203 is provided with safety guard 206 dismountable with housing 200.
Safety guard 206 fixing is connected by bolt is dismountable with housing 200.The effect of safety guard 206 is
The finger preventing user extend into the inside of housing 200, thus produces danger.If safety guard 206 includes
Dry block eyed structure.Reinforcement it is provided with to promote the firm of whole safety guard 206 between every piece of eyed structure
Degree.Additionally safety guard 206 entirety is also and on-plane surface is arranged, but forms the air intake surface of an arc.Excellent
In the embodiment of choosing, those eyed structures are labyrinth passage 207, say, that air is by this labyrinth type
Not along straight-line pass during passage, but air produces bending on travel path.So benefit of design increases
Adding the air total traveling distance through safety guard 206, when bypassing air through, noise transmission path increases the most accordingly
Add, reduce the generation of noise.Test proves that, use the safety guard 206 of this structure to make noise
4 to 6 decibels can be reduced.This labyrinth passage 207 includes connecting the first of setting the most at an angle
Passage 208 and second channel 209.In a preferred embodiment, this angle is obtuse angle.First passage 206
One end connection the external world, the other end connection second channel 209.One end connection first of second channel 209 is led to
Road 208, the other end is communicated to the inside of housing 200.Air is introduced into first passage 208 from the external world, then
Again by second channel 209, enter finally into the inside of housing 200.In a preferred embodiment, first
Passage 208 substantially longitudinally extends, and the relative fore-and-aft tilt of second channel 209 is arranged.
Housing 200 also has the handle 700 for operator's gripping effect.Preferably, on handle 700
It is additionally provided with control switch 701.
As shown in Figure 1, Figure 2, shown in Fig. 3 and Fig. 6, duct 400 is positioned at downstream area 202.Compared to blowing
Pipe 600, duct 400 is closer to fan 500.The effect of duct 400 is the air-flow guiding fan 500 to produce
Move to the air outlet 601 of blower 600.And make air-flow moves towards centralized and unified, promote air-out effect.
Duct 400 includes deflection cone 401, the duct outer housing 403 housing deflection cone 401 and is positioned at deflection cone
Stator blade 402 between 401 and duct outer housing 403.Deflection cone 401 is arranged approximately along the moving direction of air-flow.
Deflection cone 401 is positioned at the center of gas channel 602, in deflection cone 401 includes shell 405 and shell 405
The cone-shaped cavity 406 in portion.Airflow is constituted between shell 405 and the duct outer housing 403 of deflection cone 401
Space, the cross section of the vertical longitudinal axis 101 of this free air space is generally annular.Stator blade 402 is positioned at
In the free air space of this annular, and substantially compartment of terrain distribution.Interval supply between stator blade 402 two-by-two
Stream circulation.In the present embodiment, the quantity of stator blade 402 is 7.But the present invention is not to stator blade
The quantity of 402 limits.In a preferred embodiment, stator blade 402 relative wind moving direction tilts
Ground is arranged, and the angle tilted is preferably 5 degree to 15 degree.Stator blade 402 is the most fixing even
Connect deflection cone 401 and one of duct outer housing 403.In a preferred embodiment, the volume of deflection cone 401 is little
Volume in motor 300.It is to say, motor 300 cannot be arranged in deflection cone 401.And outside duct
Cover 403 is contained in housing 200, and fixing with housing 200 is connected.In a preferred embodiment, duct
400 also include that protective cover 404, protective cover 404 uprush move towards to arrange, the most longitudinally disposed.
The effect of protective cover 404 is to prevent foreign body from entering duct 400.It is additionally provided with between duct 400 and housing 200
For fixing the fixing cover 407 of duct 400 position relative with housing 200.
As shown in Figure 8 and Figure 9, in the present embodiment, motor 300 is set to alternating current generator 300.Certainly,
It can also be provided that direct current generator 300, correspondingly, housing 200 or handle 700 arrange battery bag (not
Diagram), battery bag electrically connects with motor 300.Further, motor 300 is set to DC brushless motor
300。
Handle 700 has the grip part 703 gripped for operator.Open it addition, be additionally provided with control on handle 700
Close 701, control switch 701 and electrically connect with motor 300, to control the opening and closing of motor 300.Excellent
Selection of land, controls switch 701 and also can control the rotating speed of motor 300.
Blower 600 extends along first axle 707 lengthwise, and grip part 703 is prolonged along the second axis 709 lengthwise
Stretching, first axle 707 and the second axis 709 define the first plane, and center of gravity G of hair-dryer 100 is
Projection in two planes is positioned at the grip part 703 drop shadow spread in the second plane, and the second plane is parallel to
Second axis 709, and it is perpendicular to the first plane.So, when gripping grip part 703 and blowing operation,
Generally the second axis 709 of grip part 703 is roughly parallel to horizontal plane, now center of gravity G of hair-dryer 100
Projection in the second plane is positioned at the grip part 703 drop shadow spread in the second plane so that operator
Be not required to the power additionally overcoming hair-dryer 100 to deflect, operation is as snug as a bug in a rug, it is to avoid work long hours
Tired.
In the present embodiment, motor 300 is heavier, and in the complete machine weight of hair-dryer 100, accounting is relatively big,
Additionally blower 600 uses the relatively light and relatively thin material of ratio, thus by motor 300 is arranged at duct 400
Outside, and be positioned at below the grip part 703 of handle 700, thus ensure that center of gravity G of hair-dryer 100 is
Projection in two planes is positioned at the grip part 703 drop shadow spread in the second plane so that hair-dryer 100
Operate comfortable.
It addition, the projection that center of gravity G of hair-dryer 100 is in the 3rd plane to be positioned at grip part 703 flat the 3rd
In drop shadow spread on face, the 3rd plane is parallel to first axle 707, and is perpendicular to the first plane.So,
Also ensure that when gripping grip part 703 and blowing operation so that operator is not required to additionally overcome blow
The power of blower fan 100 deflection, operation is as snug as a bug in a rug, it is to avoid the fatigue that works long hours.
First axle 707 and the second axis 709 angle are not more than 25 degree.When operation hair-dryer 100
When blowing operation, the first axle 707 of blower 600 with the horizontal the angle of no more than 25 degree,
Now the aspect of blowing efficiency of hair-dryer 100 is higher.Therefore, it is arranged such, it is ensured that during blowing operation, grips
Second axis 709 in portion 703 is almost parallel with horizontal plane, so that hair-dryer 100 ensures high aspect of blowing efficiency
While, operate more comfortable, further avoid the fatigue worked long hours.
Preferably, first axle 707 and the second axis 709 angle substantially 10 degree.When operation blowing
When machine 100 blows operation, the first axle 707 of blower 600 is with the horizontal the folder of substantially 10 degree
Angle, now the aspect of blowing efficiency of hair-dryer 100 is the highest.Therefore, it is arranged such, it is ensured that during blowing operation,
Second axis 709 of grip part 703 is almost parallel with horizontal plane, so that hair-dryer 100 ensures higher blowing
While wind efficiency, operate more comfortable.
In the present embodiment, when first axle 707 is with the horizontal the angle of no more than 25 degree, hair-dryer
Center of gravity G of 100 projection in the horizontal plane is positioned at grip part 703 drop shadow spread in the horizontal plane.As
This arrange, it is ensured that during blowing operation, while hair-dryer 100 ensures high aspect of blowing efficiency, rapid operation and
Comfortable, it is to avoid the fatigue that works long hours.
Further, when first axle 707 is with the horizontal 10 degree of angles, center of gravity G of hair-dryer 100
Projection in the horizontal plane is positioned at grip part 703 drop shadow spread in the horizontal plane.
Preferably, center of gravity G of hair-dryer 100 is between fan and motor 300.
Further, the projection in the second plane of center of gravity G of hair-dryer 100 is positioned at motor 300 second
In drop shadow spread in plane.
It addition, the projection that motor 300 is in the second plane is with the grip part 703 projection in the second plane extremely
Small part is overlapping.So, center of gravity G of the hair-dryer 100 projection position in the second plane can be further ensured that
In the drop shadow spread in the second plane of the grip part 703.Make hair-dryer 100 compact conformation, and operation
Comfortable.
As shown in Figure 3 and Figure 7, in the present invention, the fan 500 of hair-dryer 100 preferably employs aerofoil fan,
Aerofoil fan can provide more preferable airflow effects compared to centrifugal fan.Fan 500 is arranged in motor 300
And between duct 400, the fan axis 501 of fan 500 overlaps with the centrage of blower 600.Housing
200 have gas channel 602 in blower 600, and gas channel 602 includes from air inlet 203 to fan
The upstream region 201 of 500 and from the downstream area 202 of aerofoil fan 500 to air outlet 601, motor
300 are arranged at upstream region 201, and duct 400 is arranged at downstream area 202.
Motor 300 is arranged on upstream region 201 in housing 200, and motor 300 has motor shaft 301, motor
Axle 301 is connected with fan 500 and fan 500 can be driven to rotate around its fan axis 501, thus drives
Air moves formation air-flow from upstream region 201 downstream region 202.In the present embodiment, fan 500 includes
The wheel hub 504 connected with motor shaft 301 and multiple blade 502 being arranged on wheel hub 504, for blade
The particular number present invention of 502 does not has strict restriction.Fan 500 also includes that circumference connects band 503, circumference
Connect band 503 around connecting all blades 502.Circumference connects the setting with 503, on the one hand can increase
The rigidity of fan 500, extends the service life of fan 500, prevents from using a period of time aft-fan 500 to go out
The phenomenons such as existing breakage；On the other hand can increase the stability after fan 500 high-speed rotation, contribute to reducing
The noise produced after fan 500 high-speed rotation.
Table 1 is connected with installation circumference before listing the installation circumference connection band 503 that hair-dryer 100 experiment records
The data of noise level are produced with the fan 500 after 503 when operating.Circumference is installed as can be seen from Table 1 even
Before tape splicing 503, the meansigma methods of the four groups of noise datas recorded in front is 100 decibels；And the installation of correspondence
After circumference connects band 503, the meansigma methods of the four groups of noise datas recorded in front is 96.8 decibels.It addition,
Install before circumference connects band 503 as can also be seen from Table 1, the four groups of noise datas recorded in the wings average
Value is 99.4 decibels；And after the installation circumference of correspondence connects band 503, the four groups of noise datas recorded in the wings
Meansigma methods be 98.2 decibels.From data, can be seen that installation circumference connects band 503 aft-fans 500 and operates
Time the noise that records in different azimuth be obtained for reduction.
Table 1
As it is shown in fig. 7, the diameter of fan 500 is less than 88 millimeters in the present invention, the output of motor shaft 301 turns
Speed is more than 21000 revs/min.Preferably, the fan diameter D1 of fan 500 is arranged on 50 millimeters-88 millimeters
Within the scope of, in the present embodiment, the fan diameter D1 of fan 500 is set as 82 millimeters.
Record hair-dryer 100 during design and related to the one of fan diameter, motor speed, air quantity and wind speed and be
Row experimental data.In experiment motor speed we have selected more than 21000 revs/min, be set to 25000 turns/
Point, the corresponding air quantity measuring the generation when selecting the fan 500 of different diameters and the numerical value of wind speed.Number
According to middle display, when fan diameter sets more than 88 millimeters, it is possible to obtain higher air quantity and wind speed, but with
Time the consequence brought be that the power consumption of hair-dryer 100 can be higher, the data recorded in experiment are that power consumption has surpassed
Cross 1011W, when using battery bag as the energy, the operable time serious curtailment of hair-dryer 100.Cause
This is in order to reduce the power consumption of blower 100, is preferably and the fan diameter of hair-dryer 100 is set smaller than 88
Millimeter.When fan diameter is set in the numerical value less than 88 millimeters, along with the reduction of numerical value, blower 100
Power consumption be gradually reduced, but the consequence simultaneously brought is, the air quantity of blower 100 and wind speed also totally in
Reveal the trend being gradually reduced.Fan diameter is set smaller than equal to 50 millimeters when, the air quantity recorded
Value is corresponding less than or equal to 200CFM, and the air speed value recorded is accordingly less than or equal to 70MPH, now blows
The airflow effects of blower fan 100 is poor, and air-out is inefficient.Therefore, while considering power consumption, blowing is taken into account
The airflow effects of machine 100, within the scope of fan diameter is preferably set to 50 millimeters-88 millimeters.Data show
When fan diameter is set within the scope of 50 millimeters-82 millimeters, along with the increase of fan diameter, hair-dryer
Air quantity, wind speed and the power consumption of 100 is all increasing, when fan diameter is set as 82 millimeters, and hair-dryer 100
Air quantity, wind speed and power consumption all reach a maximum.When fan diameter is set in 82 millimeters of-88 millimeters of models
Time within enclosing, along with the increase of fan diameter, the air quantity of hair-dryer 100, wind speed and power consumption are the most all increasing
Adding, when fan diameter is set as 88 millimeters, the air quantity of hair-dryer 100, wind speed and power consumption reach one equally
Individual maximum.Fan diameter is in this section of interval of 50 millimeters-82 millimeters, along with the increase of fan diameter, wind
Speed, air quantity and power consumption are all promoting.And fan diameter is in this section of interval of 82 millimeters-88 millimeters, along with wind
The increase of fan diameter, wind speed and air quantity are still promoting, but now power consumption is substantially improved.Generally speaking, fan
Diameter is in this section of interval of 50 millimeters-88 millimeters, along with the increase of fan diameter, wind speed, air quantity and power consumption
All in the trend increased, but when diameter is more than 82 millimeters, wind speed, the increasing degree of air quantity are not very big,
And now power consumption has had and has significantly increased.After fan diameter is more than 82 millimeters, only significantly increase power consumption
Bringing the increase of wind speed by a small margin and air quantity, after therefore considering, the diameter of fan is set as 82 the most at last
Millimeter.Such design can make hair-dryer 100 control while lower power consumption, increases hair-dryer 100
Air quantity and wind speed, and finally obtain higher aspect of blowing efficiency and more preferable airflow effects.
Furthermore it is preferred that, the output speed of motor shaft 301 is set in 21000 revs/min of-50000 revs/min of models
Within enclosing.The rotating speed of raising motor shaft 301, and reduce the size of fan 500 simultaneously, form high rotating speed and drive
The layout of dynamic small fan.Such design can reduce power consumption so that at satisfied guarantee single dc-battery bag
Under time, improve wind speed, thus obtain higher aspect of blowing efficiency and more preferable airflow effects.
The hub diameter D2 of the wheel hub 504 of the fan 500 and fan diameter D1 of fan 500 in the present embodiment
Ratio within the scope of 0.1-0.7.The hub diameter D2's and fan diameter D1 of general fan 500
Than being otherwise known as hub ratio, hereafter directly it is illustrated with hub ratio.Fix in fan 500 external diameter size
In the case of, hub ratio determines the proportioning between wheel hub 504 and blade 502, and eventually has influence on wind
The air-out situation of fan 500.According to one group of data of hub ratio Yu air quantity relationship experiments gained, survey timing setting
Motor speed is constant is 24000 revs/min, and the wind sectional area of crossing of upstream region 201 minimum is 7190MM2,
That is the smallest cross-sectional face in the cross section that air-flow passes through can be taken from air inlet 203 to fan 500 in
Amass as 7190MM2, the fan diameter D1 of fan 500 is set as 82 millimeters, measures in such a situa-tion
The data relationship of common hub ratio and air quantity.Data show, along with the increase of hub ratio, air quantity gradually subtracts
Little, for making hair-dryer 100 obtain preferable airflow effects, need hair-dryer 100 can provide one bigger
Air quantity, and when selected hub ratio is 0.1-0.3, air quantity can obtain a bigger numerical value, but brings
Consequence be that wheel hub is the least, and relative vane is relatively big, causes the noise produced when rotating relatively big, and fan 500
Less stable, be very easy to damage.And select hub ratio to be possible not only to when 0.3-0.5 obtain one relatively
The noise that high air quantity and the stability of fan 500 preferably and produce when rotating is the least.This is concrete real
Execute hub ratio in example and be set to 0.34.Other numerical value in 0.1-0.7 numerical range all can use, especially
Numerical value in the range of 0.3-0.5.
Fan 500 is arranged in housing 200, and fan 500 includes the wheel hub 504 connected with motor shaft 301
With multiple blades 502 being arranged on wheel hub 504, the outer edge of the blade 502 of fan 500 is additionally provided with
Circumference connects band 503.Circumference connect with the beeline between 503 and housing 200 inwall be 0 millimeter to 5
Millimeter (not including end points).Preferably, circumference connects with the beeline between 503 and housing 200 inwall
Being set as 1 millimeter, such design can ensure that fan 500 carries while housing 200 assembled condition
For more preferable airflow effects.
In the present embodiment, hair-dryer 100 is along being longitudinally disposed with motor from upstream region 201 to downstream area 202
300, fan 500, duct 400 and blower 600 etc..It is additionally provided with air inlet 203 on housing 200, enters
Air port 203 is positioned at upstream region 201, and arranges near fan 500, and the end of blower 600 is provided with
The air outlet 601 finally blown out for air-flow.When fan 500 carries out rotating work under the driving of motor shaft 301
When making, it is internal that extraneous air enters into housing 200 from air inlet 203, then passes through duct 400 and blows
The inside of airduct 600, blows out from the air outlet 601 being positioned at downstream area 202.The blade 502 of fan 500
Rotating and form an annular plane of rotation, plane of rotation area is S1, and the area of fan 500 deducts wheel hub 504
Area be exactly plane of rotation area S1.Blower 600 end is provided with air outlet 601, air outlet 601
The area ratio of long-pending S2 and plane of rotation area S1, within the scope of 0.75-1.1, so arranges and can improve gas
The flow behavior of stream thus improve aspect of blowing efficiency, and hair-dryer 100 can keep higher wind speed, wind speed
Loss less.
Table 2 lists the air outlet area/plane of rotation area of experiment gained and one group of data relationship of wind speed.Real
Test timing, motor speed is constant is 24000 revs/min, and the constant area of air outlet is set as 3957MM2,
Under conditions of motor speed sets with air outlet constant area, determine the volume of data in table 2.From
Data in table 2 are it can be seen that be set in the numerical range of 0.75-1.1 at air outlet area/plane of rotation area
Time, hair-dryer 100 can obtain a higher wind speed, and the loss of wind speed is less.
Table 2
In the present embodiment, the air quantity of hair-dryer 100 is more than 370cfm, and the design of such air quantity can be more easily
Blow afloat the heavier leaves dropped on lawn and the leaves etc. being positioned in crack.
Hair-dryer 100 includes housing 200 and blower 600, and motor 300, fan 500 etc. are arranged in housing
In 200, blower 600 is provided with air outlet 601.Housing 200 connects with blower 600, from
And form the complete air channel that air-flow can be allowed to pass through.The inwall of the housing 200 connected with blower 600 with
Inwall angle α between the centrage of blower 600 is less than or equal to 5 degree.The blowing connected with housing 200
Outer wall angle β between outer wall and the centrage of blower 600 of pipe 600 is less than or equal to 5 degree.Such
Angle arranges the sectional area expanding air-flow outlet on housing 200, and air-flow enters blower 600 simultaneously
The sectional area of rear passage is again in diminishing trend.Such layout arranges and makes air-flow enter blower
Air quantity increases before 600, enters the wind speed after blower 600 and has got back enhancing, thus is correspondingly improved
The aspect of blowing efficiency of hair-dryer 100, it is possible to obtain more preferable airflow effects.
As shown in Figures 2 and 3, motor 300 is positioned at upstream region 201.It is to say, 300, motor
Between air inlet 203 and fan 500, air inlet 203 and fan 500 are positioned at the both sides of motor 300.
And motor 300 and housing 200 keep certain spatial joint clearance.The air entered from air inlet 203 can be first
By the gap between motor 300 and housing 200, then it is rotated by fan 500, such that it is able to produce
Angry stream.Owing to the position of motor 300 setting is between air inlet 203 and fan 500, air is all the time
Pass through around motor 300, motor 300 can be produced extra cooling effect.Therefore need not extra
Arranging cooling fan, the radiating requirements of motor 300 is just met, and such design makes hair-dryer 100 tie
Structure simplifies.Motor 300 is arranged on outside duct 400, and the size of duct 400 can be made smaller, contains
The size in road 400 will not be by the size limitation of motor 300.In other words, in the size of design duct 400
Without considering further that the size limitation of motor 300 during size, such that it is able to promote the blowing of duct 400 further
Efficiency.Motor 300 includes the rotor 303 that stator 302 and relative stator 302 rotate.Rotor 303 around
The motor shaft 301 extended longitudinally is arranged.Motor shaft 301 encloses rotatable around its axis.Motor shaft 301 power
Connect fan 500, thus drive fan 500 to rotate around fan axis 501.In the present embodiment, wind
Fan 500 is directly installed on motor shaft 301, and the axis of motor shaft 301 overlaps with fan axis 501.This
The motor 300 of embodiment is compared to traditional gasoline-fueled engine, and volume is less.Therefore motor 300
Vertical longitudinal cross-sectional area can be less than vertical longitudinal cross-sectional area of gas channel 602 so that
Motor 300 can be placed in gas channel 602.In a preferred embodiment, motor 300 is vertical vertical
To the ratio of cross-sectional area longitudinal cross-sectional area vertical with gas channel 602 be 0.6～0.7.
Owing to motor 300 is positioned at upstream region 201, motor 300 occupies certain space and volume, air
Moving along gas channel 602, gas channel 602 includes that several cross wind face.Crossing wind face is gas channel 602
It is perpendicular to the cross section of air-flow moving direction.In order to ensure enough intakes, minimum in upstream region 201
The area crossing wind face rotates the area of the plane of rotation formed more than the blade of fan 500, so can ensure that source
The continuous air in source supplements the blade touching fan 500, thus ensures that blowing is uninterrupted.It is similar to wooden barrel
Theory, upstream region 201 supplements the size of the air capacity to fan 500 and depends in upstream region 201
Little crosses wind area.Therefore even if the wind area excessively elsewhere of upstream region 201 is big again, but wherein
Minimum crosses the wind face the most indeclinable words of area, and the intake of fan 500 would not change.Therefore, carry
The minimum wind area of crossing rising whole upstream region 201 could promote the intake of fan 500.From Fig. 3 and Tu
Shown in 4, air is after air inlet 203 enters into upstream region 201, owing to upstream region 201 is near entering
The part in air port 203 does not stop, therefore the wind area of crossing of this part can ensure that the plane of rotation more than fan
Long-pending.In upstream region 201, the part of wound motor 300 is defined as circle zone 204, owing to there being motor 300
Stop, circle zone 204 cross wind area can be smaller.However, to ensure that good aspect of blowing efficiency,
The minimum area crossed in wind area S4 along longitudinal direction of circle zone 204 is designed as the leaf more than aerofoil fan
Sheet 502 rotates the area of the plane of rotation S1 formed.By test, the minimum of circle zone 204 crosses wind face
Long-pending S4 rotates the ratio of the plane of rotation S1 area formed and the pass of airflow effects with the blade 502 of aerofoil fan
System is such as following table:
Table 3
As can be seen here, the minimum of circle zone 204 crosses the area of wind face S4 and the plane of rotation S1 of aerofoil fan
The scope of area ratio when changing between 1.5 to 2.5, the effect promoting of blowing is notable.When around district
When the area of the minimum wind face S4 of mistake in territory 204 is more than 2 with the area ratio of the plane of rotation S1 of aerofoil fan,
Wind speed and air quantity have lifting by a small margin.But now area ratio is more than 2, the minimum of circle zone 204
Crossing wind area itself bigger, the volume of corresponding whole hair-dryer 1 is the biggest.Therefore at the present embodiment
In, the area ratio crossing the minimum area of wind face S4 and the plane of rotation S1 of aerofoil fan of circle zone 204
It is 1.8.With this understanding, the air quantity of hair-dryer 100 blowout can reach 376CFM, and wind speed can reach
100MPH, meets while the design of hair-dryer 100 wind speed and air quantity requires, the volume of hair-dryer 100
In the range of being also at reasonably.
Upstream region 201, except including circle zone 204, also includes being located around region 204 and fan 500
Between transitional region 205.Transitional region 205 is for being guided to wind by the air of circle zone 204
Fan 500.Air enters into transitional region 205 from circle zone 204, the most again by transitional region 205
Rear contact fan 500.In a preferred embodiment, the inwall of the housing 200 at transitional region 205 place is
Smooth surface, such that it is able to effectively reduce the air-flow loss by transitional region 205.It addition, in order to ensure
Good aspect of blowing efficiency, the minimum scope crossing wind area S5 and the ratio of slewing area S1 of transitional region 205
Between 1.5 to 2.5.Preferably, this ratio is 1.8.It is to say, the minimum mistake of transitional region 205
Wind area S5 crosses wind area S4 at least almost size with the minimum of circle zone 204 such that it is able to ensure
A certain amount of air passes through transitional region 205.In order to ensure the minimum wind area of crossing of transitional region 205, electricity
Be spaced between machine 300 and fan 500 certain fore-and-aft distance L, this fore-and-aft distance L be 20 millimeters to 30
Millimeter, it is preferable that the fore-and-aft distance L between motor 300 and fan 500 is 25 millimeters.
Hair-dryer 100 also includes for motor 300 and the fixing supporting construction 800 of housing 200.Support
Structure 800 is similarly positioned in upstream region 201, and supporting construction 800 includes first along longitudinally spaced apart setting
Frame the 801, second support 802 and along longitudinally connected first support 801 and the connector of the second support 802
803.In the present embodiment, connector 803 is bolt.Bolt is along longitudinally the first support 801 and second
Frame 802 couples together.
Refer to Fig. 2, Fig. 3 and Fig. 5.First support 801 1 aspect self is fixing with housing 200 to be connected,
On the other hand again motor 300 is played a supportive role.First support 801 is provided with fixed cell 804 and housing
Fixing clamping inside 200, the first support 801 supports motor 300 simultaneously.First support 801 includes a use
Inner ring 805 and an outer ring 806 being used for fixing housing 200 in fixing motor 300.Inner ring 805
Being arranged concentrically with outer ring 806, further, inner ring 805 and outer ring 806 are centrally located on electrical axis.
The outer surface of outer ring 806 is provided with fixed cell 804.Outer ring 806 longitudinally wide is more than inner ring 805
Longitudinally wide, inner ring 805 is substantially contained in outer ring 806 and surrounds the space formed.Inner ring 805 and outer ring 806
Between be provided with several support members 807.Support member 807 radially extends approximately along electrical axis 501.?
The connection outer ring, one end 806 of support member 807, the other end connects inner ring 805.These several support members 807 are along week
To being uniformly distributed, the surrounding of each support member 807 also is provided with being easy to the first circulating area of supplied gas circulation
808.In a preferred embodiment, the quantity of support member 807 is 4, the folder between adjacent two support members
Angle is 90 degree.Internal being additionally provided with of inner ring 805 accommodates the perforation 809 that motor shaft 301 passes.Perforation 809 Hes
Several reinforcements 810 it are provided with between inner ring 805.Reinforcement 810 is also disposed around the of supplied gas circulation
Two circulating areas 811.
In another embodiment as shown in figure 12, hair-dryer 100, in addition to having blowing function, also has
Air suction function.Therefore this hair-dryer 100 selectively switches to blowing mould formula or suction mode.Hair-dryer 100
There is blowing assembly 102 and the air draught assembly 103 that can connect housing 200 respectively.Under blowing mould formula, blowing
Assembly 102 connects housing 200.Under suction mode, air draught assembly 103 connects housing 200.At the present embodiment
In, blowing assembly 102 includes blower 600 and duct 400.Fan 500 is preferably also arranged at blowing
In assembly 102, and arrange near duct 400.Motor 300 is still arranged in housing 200, is blowing
Under pattern, blowing assembly 102 and housing 200 form gas channel, motor 300 and blowing assembly after connecting
Fan 500 in 102 coordinates generation blowing air-flow, and now motor 300 is still in upstream region 201, and contains
Road 400 is in downstream area 202.And when this hair-dryer 100 is switched to suction mode, assembly 102 of drying
Disassemble from housing 200, change and air draught assembly 103 is installed on housing 200.Air draught assembly 103
The gas channel for air-breathing is formed with housing 200.
Embodiment described above only have expressed the several embodiments of the present invention, and it describes more concrete and detailed,
But therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that, for this area
Those of ordinary skill for, without departing from the inventive concept of the premise, it is also possible to make some deformation and
Improving, these broadly fall into protection scope of the present invention.
Claims (16)
1. a hair-dryer, comprising:
Housing, described housing is provided with air inlet, and air enters from described air inlet；
Motor, is positioned at described enclosure interior；
Aerofoil fan, is driven by described motor and rotates and produce air-flow,
Described aerofoil fan includes the wheel hub connected with described motor and multiple leaf being arranged on described wheel hub
Sheet；
Blower, connects described housing and has air outlet, and described air-flow blows out from described air outlet；
Duct, is used for guiding air-flow to move to described air outlet；
It is characterized in that: the diameter of described aerofoil fan is less than 88 millimeters, the rotating speed of described motor is more than 21000
Rev/min.
Hair-dryer the most according to claim 1, it is characterised in that: described aerofoil fan be arranged in motor with
Between duct.
Hair-dryer the most according to claim 1, it is characterised in that: the fan axis of described aerofoil fan with
The centrage of described blower overlaps.
Hair-dryer the most according to claim 1, it is characterised in that: the diameter of described aerofoil fan is not less than
50 millimeters.
Hair-dryer the most according to claim 1, it is characterised in that: a diameter of 82 millis of described aerofoil fan
Rice.
Hair-dryer the most according to claim 1, it is characterised in that: the tachometer value of described motor is not more than 50000
Rev/min.
Hair-dryer the most according to claim 1, it is characterised in that: the diameter of described wheel hub and described axial flow
The ratio of fan diameter is within the scope of 0.1-0.7.
Hair-dryer the most according to claim 7, it is characterised in that: the diameter of described wheel hub and described axial flow
The ratio of the diameter of fan is within the scope of 0.3-0.5.
Hair-dryer the most according to claim 8, it is characterised in that: the diameter of described wheel hub and described axial flow
The ratio of the diameter of fan is 0.34.
Hair-dryer the most according to claim 1, it is characterised in that: described aerofoil fan also includes that circumference is even
Tape splicing, described circumference connects band around connecting all blades.
11. hair-dryers according to claim 10, it is characterised in that: described circumference connects band and described housing
Distance between inwall is not more than 5 millimeters.
12. hair-dryers according to claim 11, it is characterised in that: described circumference connects band and described housing
Distance between inwall is 1 millimeter.
13. hair-dryer according to claim 1, it is characterised in that: the blade of described aerofoil fan rotates shape
The plane of rotation circularized, the area of described air outlet and described plane of rotation area ratio are in 0.75-1.1 scope
Within.
14. hair-dryers according to claim 1, it is characterised in that: the air quantity of described hair-dryer is more than 370cfm.
15. hair-dryers according to claim 1, it is characterised in that: the housing connected with described blower
Inwall is less than or equal to 5 degree with the angle of the centrage of described blower.
16. hair-dryers according to claim 1, it is characterised in that: the blower connected with described housing
Outer wall is less than or equal to 5 degree with the angle of the centrage of described blower.
Priority Applications (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111275118.1A CN113846592A (en) | 2014-11-28 | 2015-02-06 | Hair drier |
| US15/108,641 US10227988B2 (en) | 2014-11-28 | 2015-11-27 | Blower and a blowing vacuum device |
| AU2015353128A AU2015353128A1 (en) | 2014-11-28 | 2015-11-27 | Air blower and blower/vacuum apparatus |
| EP15863580.5A EP3225742B1 (en) | 2014-11-28 | 2015-11-27 | Air blower and blower/vacuum apparatus |
| PCT/CN2015/095830 WO2016082796A1 (en) | 2014-11-28 | 2015-11-27 | Air blower and blower/vacuum apparatus |
| AU2015101868A AU2015101868A4 (en) | 2014-11-28 | 2015-11-27 | Air blower and blower/vacuum apparatus |
| DE212015000028.1U DE212015000028U1 (en) | 2014-11-28 | 2015-11-27 | Blowing device and blowing and suction device |
| US16/264,860 US20190162192A1 (en) | 2014-11-28 | 2019-02-01 | Blower |
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410708685 | 2014-11-28 | ||
| CN2014107086855 | 2014-11-28 | ||
| CN201420785782 | 2014-12-11 | ||
| CN201420785782X | 2014-12-11 | ||
| CN201410796437 | 2014-12-19 | ||
| CN2014107964370 | 2014-12-19 |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111275118.1A Division CN113846592A (en) | 2014-11-28 | 2015-02-06 | Hair drier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105986554A true CN105986554A (en) | 2016-10-05 |
Family
ID=53826484
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520087601.0U Active CN204551351U (en) | 2014-11-28 | 2015-02-06 | Hair-dryer |
| CN201510064758.6A Pending CN105986554A (en) | 2014-11-28 | 2015-02-06 | Air blower |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520087601.0U Active CN204551351U (en) | 2014-11-28 | 2015-02-06 | Hair-dryer |
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| Country | Link |
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| CN (2) | CN204551351U (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106988255A (en) * | 2017-05-09 | 2017-07-28 | 浙江亚特电器有限公司 | A kind of control method for being used to clean the hair-dryer and hair-dryer on ground |
| CN108684444A (en) * | 2017-03-16 | 2018-10-23 | 苏州宝时得电动工具有限公司 | Hair-dryer |
| CN108797480A (en) * | 2017-04-26 | 2018-11-13 | 苏州宝时得电动工具有限公司 | A kind of hair-dryer |
| CN112483444A (en) * | 2020-11-26 | 2021-03-12 | 宁波奥晟机械有限公司 | Garden blower |
| CN113668440A (en) * | 2021-09-14 | 2021-11-19 | 格力博(江苏)股份有限公司 | Hair drier |
| WO2024017180A1 (en) * | 2022-07-18 | 2024-01-25 | 格力博(江苏)股份有限公司 | Axial flow blower |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204551351U (en) * | 2014-11-28 | 2015-08-12 | 苏州宝时得电动工具有限公司 | Hair-dryer |
| CN107724308A (en) * | 2016-08-10 | 2018-02-23 | 苏州宝时得电动工具有限公司 | Hair-dryer |
| US10897858B2 (en) * | 2017-11-30 | 2021-01-26 | Tti (Macao Commercial Offshore) Limited | Blower/mulcher |
| CN111336116A (en) * | 2018-12-18 | 2020-06-26 | 宝时得科技（中国）有限公司 | Blowing and suction fan |
| WO2020125255A1 (en) * | 2018-12-18 | 2020-06-25 | 苏州宝时得电动工具有限公司 | Blowing and suction fan |
| EP4306807A1 (en) * | 2021-03-12 | 2024-01-17 | Positec Power Tools (Suzhou) Co., Ltd. | Garden tool having blowing function |
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|---|---|
| CN204551351U (en) | 2015-08-12 |
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