CN208778287U - Fan - Google Patents
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- CN208778287U CN208778287U CN201821084768.1U CN201821084768U CN208778287U CN 208778287 U CN208778287 U CN 208778287U CN 201821084768 U CN201821084768 U CN 201821084768U CN 208778287 U CN208778287 U CN 208778287U
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Abstract
The utility model discloses a kind of fan, wherein fan includes bracket, first motor, the first fan blade, the second motor, the second fan blade and electric-controlled plate；The first motor is installed on the bracket, and the first motor has first rotating shaft；First fan blade is installed on the first rotating shaft；Second motor is installed on the bracket, and second motor has the second shaft and is coaxially disposed with the first motor；Second fan blade is installed on second shaft；The inclined direction of second fan blade is opposite with the inclined direction of first fan blade；The electric-controlled plate is electrically connected the first motor and second motor and controls the first motor and the second motor relative rotation.Technical solutions of the utility model can carry out the quick adjusting between different air-out modes according to user demand.
Description
Technical field
The utility model relates to field of home appliance technology, in particular to a kind of fan.
Background technique
Electric fan can be divided into ceiling fan, desk fan, stand fan, wall fan, ventilation fan, air cooler according to different function and form
Etc. a variety of；Tube-axial fan, cross flow fan, centrifugal fan and cross-flow type wind can be divided into according to the difference of air inlet/outlet mode
Fan etc. is a variety of.Wherein, household desk fan and stand fan are mostly tube-axial fan, under normal conditions household desk fan and stand fan air quantity compared with
Small, in high tap position, air quantity is relatively slightly larger, but can generate biggish noise when high tap position Wind Volume, and use environment multi-pass is normal
Influence for interior, noise can be bigger.In addition, tube-axial fan air-out mode is single, be not applied for needing air supplying distance compared with
Remote situation and need the closer situation of air supplying distance.For example, when parlor area is larger, the air-supply of normal domestic use stand fan away from
From being difficult to from the another side for blowing to parlor on one side in parlor, especially when swinging outlet air, air supplying distance is closer；In bedroom face
Product is smaller when needing to blow for the elderly or infant, and is easy to cause body-sensing wind speed very fast because distance is too close, is unfavorable for old
The health of year people or infant.
Utility model content
The main purpose of the utility model is to propose a kind of fan, it is intended to which it is single to solve current electric fan air supply pattern, no
The problem of air quantity and air supplying distance capable of specifically being adjusted according to actual needs.
To achieve the above object, the utility model proposes fan include bracket, first motor, the first fan blade, second electricity
Machine, the second fan blade and electric-controlled plate；Wherein, the first motor is installed on the bracket, and the first motor has first rotating shaft；
First fan blade is installed on the first rotating shaft；Second motor is installed on the bracket, and second motor has the
Two shafts are simultaneously coaxially disposed with the first motor；Second fan blade is installed on second shaft；Second fan blade
Inclined direction is opposite with the inclined direction of first fan blade；The electric-controlled plate is electrically connected the first motor and second electricity
Machine simultaneously controls the first motor and the second motor relative rotation.
Preferably, the electric-controlled plate includes rotating ratio adjustment module, speed adjusting module and steering adjustment module；Wherein, described
Rotating ratio adjustment module is used for adjusting and fixing the ratio between the first motor and second motor speed, the speed adjusting module
In the revolving speed for being adjusted in synchronism the first motor and second motor, the steering adjustment module is for switching first electricity
The rotation direction of machine and second motor.
Preferably, the steering adjustment module includes protective switch, in the first motor and the second motor work
As when cut off the steering adjustment module.
Preferably, the electric-controlled plate further includes gear adjustment module, and the gear adjustment module includes editable gear
Editing machine and memory；The gear adjustment module further includes multiple preset gear selection keies and at least one customized gear choosing
Select key.
Preferably, the blade quantity of first fan blade is n1, the blade quantity of second fan blade is n2；Described first
The windup-degree of fan blade is θ1, the windup-degree of second fan blade is θ2；Define the blade quantity and second of first fan blade
The product of the ratio between blade quantity of fan blade and the ratio between the first fan blade windup-degree and the second fan blade windup-degree is first poor
Different coefficient, then the first coefficient of variationThe first coefficient of variation k1∈ [0.7,1.2].
Preferably, then the first coefficient of variation k1∈ [0.9,1.1].
Preferably, the length of blade of first fan blade is l1, area S1, the length of blade of second fan blade is l2,
Area is S2；Define the ratio between the blade area of first fan blade and the length of blade of first fan blade and second fan blade
Blade area and the product of the ratio between length of blade of second fan blade be the second coefficient of variation, then the second coefficient of variationThe second coefficient of variation k2∈ [0.8,1.2].
Preferably,
Preferably, first fan blade and the second fan blade spacing are L；Then
Preferably,
Preferably, the fan further includes third fan blade, and the third fan blade is installed on the first rotating shaft.
Preferably, the third fan blade is set to the outside of the first fan blade, and the length of blade of the third fan blade is less than institute
State the length of blade of the first fan blade.
Preferably, the fan further includes the 4th fan blade, and the 4th fan blade is installed on second shaft.
Preferably, the 4th fan blade is set between first fan blade and second fan blade, and the 4th fan blade
Length of blade be less than second fan blade length of blade.
Technical solutions of the utility model by using mutually independent first motor and second the first fan blade of motor driven and
The rotation of second fan blade, and by the adjusting of central control system progress first motor and the second motor speed ratio, this can be made practical
Novel fan has a remote outlet air ability gathered from the gentle breeze outlet air ability of air-flow fast spread to air-flow, and can be with
The quick adjusting between different air-out modes is carried out according to demand.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, the structure that can also be shown according to these attached drawings obtains other attached drawings.
Fig. 1 is the configuration schematic diagram of the utility model fan；
Fig. 2 is the fan blade and motor side structure schematic diagram of the utility model fan；
Fig. 3 is the fan blade and electric machine structure schematic diagram of the utility model fan；
Fig. 4 is the structural schematic diagram of another the embodiment motor and fan of the utility model fan.
Drawing reference numeral explanation:
| Label | Title | Label | Title |
| 100 | Bracket | 301 | Second fan blade |
| 200 | First motor | 302 | Second shaft |
| 201 | First fan blade | 400 | Third fan blade |
| 202 | First rotating shaft | 500 | 4th fan blade |
| 300 | Second motor |
The embodiments will be further described with reference to the accompanying drawings for the realization, functional characteristics and advantage of the utility model aim.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describing, it is clear that described embodiment is only a part of the embodiment of the utility model, rather than all
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work premise
Under every other embodiment obtained, fall within the protection scope of the utility model.
It is to be appreciated that if related in the utility model embodiment directionality instruction (such as upper and lower, left and right, it is preceding,
Afterwards ...), then directionality instruction is only used for explaining in the phase under a certain particular pose (as shown in the picture) between each component
To positional relationship, motion conditions etc., if the particular pose changes, directionality instruction also correspondingly changes therewith
Become.
In addition, if relating to the description of " first ", " second " etc. in the utility model embodiment, " first ", " the
Two " etc. description is used for description purposes only, and is not understood to indicate or imply its relative importance or is implicitly indicated meaning
The quantity of the technical characteristic shown." first " is defined as a result, the feature of " second " can explicitly or implicitly include at least one
A this feature.It in addition, the technical solution between each embodiment can be combined with each other, but must be with ordinary skill
Based on personnel can be realized, this technical side will be understood that when the combination of technical solution appearance is conflicting or cannot achieve
The combination of case is not present, also not within the protection scope of the requires of the utility model.
The aerofoil fans such as household stand fan, desk fan are fixed on inclined on machine shaft using a motor drive
Fan blade rotation, so that this fan structure is simple, and air-out mode is direct by air towards the axially driving air-out mode of motor,
Using the most universal, but the air that the fan blade of this fan is pushed directly on is in addition to having along axial momentum, also have because
Fan blade and windage and the momentum vertical with shaft for generating gas, wherein the momentum of the air-flow vertical with shaft can make
Diffusion of gas stream is opened, and the cross section of air flow stream increases after air-flow scatters, axially movable when suffered resistance sharply increase, cause
Axial effective air supplying distance is closer, and when especially fan head swinging puts wind, axial effectively air supplying distance goes out compared to single direction
Air supplying distance when wind is closer.
The test of air quantity platform wind speed measurement is carried out by object of " beautiful FS40-12DR " stand fan, it is basic with other stand fans
Equally, it is 4m/s or so that the maximum of beautiful FS40-12DR, which goes out wind velocity,.Fan is opened, highest gear is adjusted to, air quantity platform is placed
In front of the fan axis at different distance, wind speed is detected, data are as follows:
| Distance (m) | 1 | 2 | 3 | 4 | 5 |
| Wind speed (m/s) | 3.85 | 2.47 | 1.65 | 0.75 | 0.6 |
From the point of view of experimental data, fan decays to nonlinear attenuation, and the more highly attenuating speed the faster, and is decaying at 3m
1.65m/s, and human feeling is to there is wind to need wind speed in 1.6m/s or so.
From above-mentioned test data, it could be assumed that, effective air supplying distance of common stand fan is 3m or so, with routine use
Middle experience is consistent.
In general, effective air supplying distance of 3m can satisfy the demand of most application scenarios, but in the isometric stream wind of stand fan
The noise that fan generates when opening to high tap position is larger.Gear and noise comparative test (shelves are equally carried out with " beautiful FS40-12DR "
The position the high, and then wind velocity is higher out)." beautiful FS40-12DR " mechanicalness noise control in similar product is preferable, in operation almost
The noise for not having component mechanical oscillation or friction and generating, therefore the noise detected can consider and all blow air-flow derived from fan blade
When the noise that generates.There are three gears for FS40-12DR tool, and the corresponding noise level of each gear is being detected at two meters of fan,
Data are as follows:
| Gear | 1 | 2 | 3 |
| Noise (decibel) | 36.3 | 43.2 | 53.8 |
Noise on daytime is more than 50 decibels, and night noise can interfere normal sleep and rest when being more than 45 decibels.According to sound
Environmental quality standards, the requirement of 0 class acoustic environment area (referring to the region that rehabilitative sanatorium care area etc. especially needs peace and quiet) be daytime noise not
Greater than 50 decibels, night noise is not more than 40 decibels；1 class acoustic environment area (refers to residential building, health care, culture and education, section
Grind design, administrative office is major function, the region for needing to keep quite) requirement be noise on daytime no more than 55 decibels, night
Late noise is not more than 45 decibels.
It follows that conventional stand fan at night in use, its maximum gear the noise that generates can be obvious
Influence sleep and rest.Even if the noise for passing generation in the case of maximum gear does not meet 0 class acoustic environment area yet on daytime
Requirement.
Therefore the stand fan of conventional single motor single blade structure cannot guarantee sufficient under the premise of keeping sufficiently quietly
Effective air supplying distance.Meanwhile conventional stand fan can not meet the air-supply demand of some larger spaces, such as area is biggish
The scene of the demands such as parlor.
Furthermore under some special application scenarios, such as it is infant's air-supply in the lesser bedroom of area or is old
When people's air-supply, what is needed is no longer biggish effective air supplying distance, but the gentle breeze that air-flow scatters as early as possible, to avoid
Larger wind speed blow-through infant or old man's body.Currently, people are usually by fan towards wall, using wall to the anti-of air-flow
Punching effect makes air-flow achieve the purpose that fast spread, and cannot be achieved the goal by directly adjusting fan.
For this purpose, the utility model proposes a kind of fans.The utility model proposes fan using two motors individually
It controls two fan blades to reversely rotate, the inclined direction of two fan blades is on the contrary, its air-out direction is identical when therefore two fan blades reversely rotate.
Specifically, please referring to Fig. 1 to Fig. 3 in the utility model embodiment, which includes bracket 100, first motor
200, the first fan blade 201, the second motor 300, the second fan blade 301 and electric-controlled plate；Wherein, the first motor 200 is installed on institute
Bracket 100 is stated, the first motor 200 has first rotating shaft 202；First fan blade 201 is installed on the first rotating shaft
202；Second motor 300 is installed on the bracket 100, and second motor 300 has the second shaft 302 and with described the
The coaxial arrangement of one motor 200；Second fan blade 301 is installed on second shaft 302；The inclination of second fan blade 301
Direction is opposite with the inclined direction of first fan blade 201；The electric-controlled plate is electrically connected the first motor 200 and described second
Motor 300 simultaneously controls the first motor 200 and 300 relative rotation of the second motor.
First motor 200 drives the rotation of first rotating shaft 202 to drive the first fan blade 201 to rotate；Likewise, the second motor
300 the second shaft 302 of driving rotations are to drive the second fan blade 301 to rotate.First motor 200 and the second motor 300 are electrically connected respectively
Electric-controlled plate is connect, the electric-controlled plate individually controls the rotation direction and velocity of rotation of first motor 200 and the second motor 300,
First motor 200 and the rotation direction of the second motor 300 is set to keep opposite.
Bi-motor can make air by axially stacking driving effect to outlet air in the same direction is revolved, and the drive radially cancelled out each other
Movement is used, and reduces disturbance of the air-flow when being axially moved, air-flow is made smoothly to travel forward.It is not much different in two fan blade revolving speeds
When, relative to single fan blade outlet air, the gather effect of air-flow is obvious, can be transmitted to farther distance.The difference of two fan blade revolving speeds
The difference that will lead to fan air-out effect, about the first fan blade 201 and 301 rotating ratio of the second fan blade to fan air output and effectively
The influence of air supplying distance, hereinafter will do it and illustrates.
The electric-controlled plate includes rotating ratio adjustment module, speed adjusting module and steering adjustment module；Wherein, the rotating ratio tune
For adjusting and fixing the ratio between the first motor 200 and described second motor, 300 revolving speed, the speed adjusting module is used for section module
It is adjusted in synchronism the revolving speed of the first motor 200 with second motor 300, the steerings adjustment module is used to switch described the
The rotation direction of one motor 200 and second motor 300.
Turning to adjustment module tool, there are two types of shaping modes, and one is co-rotating mode, another kind is reversing mode, co-rotating mode
Under, fan forward direction outlet air, under reversing mode, the reversed outlet air of fan；Turning to adjustment module includes regulating switch and protective switch, is protected
Switch is protected for the cutting steering adjustment module in fan work, prevents the triggering steering regulating switch in fan work from making first
Motor 200 and the second motor 300 reversely damage at work；Regulating switch is turned to be used for when fan stops working pair
Switch the powering mode of first motor 200 and the second motor 300, to control fan forward direction or reversed outlet air.Protective switch is
Normally closed switch, when fan work, protective switch is opened, and cutting turns to the power supply of adjustment module；Power on when fan and
When not working, protective switch closure, turning to adjustment module be can work normally.
For the conventional Ian of single motor single fan blade, in the case where output power of motor is certain, influences fan and go out
The factor of wind energy power (main including air output and effective air supplying distance) include the blade quantity of fan blade, single blade area,
Windup-degree (when blade rotates, the angle in width of blade direction and leaf line directional velocity), length of blade, the blade of blade are wide
Degree and blade rotational speed etc. are a variety of, these factors mutually have one to the not simple superposition of the contribution of fan outlet air ability
Fixed influence, for example, the area of single blade is the product of length of blade and width, single when being rectangle by blade equivalent
The timing of area one of blade, the length of blade is bigger, and the outlet air total amount of fan can be bigger, but the length of blade and fan has
Relationship between effect outlet air distance does not have consistency but, and the length of blade is excessive or the too small effective outlet air that can all cause fan
The reduction of distance.
For the utility model proposes fan for, motor output general power it is certain in the case where, influence fan and go out
The factor of wind energy power further includes the first fan blade 201 and other than the factor of above-mentioned influence single motor single fan blade outlet air ability
Relationship and the distance between the first fan blade 201 and the second fan blade 301 between the respective above-mentioned each factor of two fan blade 301, example
Such as, other factors all under the same conditions, the rotating ratio of the first fan blade 201 and the second fan blade 301 can influence fan simultaneously
Effective air supplying distance and outlet air total amount.
By fan to for 201 1 side air-out of the first fan blade, the revolving speed of the first fan blade 201 is ω1, the second fan blade 301
Revolving speed is ω2, keep first motor 200 and 300 gross output of the second motor certain, and using only torsional direction it is different the
One fan blade 201 and the second fan blade 301, carry out different rotating speeds ratio in the case where fan effective air supplying distance and outlet air total amount comparison
Test, partial data are as follows:
From above-mentioned test data it is found that working as the rotating ratio of the first fan blade 201 and the second fan blade 301When,
Air output is higher；When the rotating ratio of the first fan blade 201 and the second fan blade 301When, effective air supplying distance compared with
Far.Work as further, it is also possible to obtainWhen, the attenuation of air output and effective air supplying distance slows down gradually；WhenWhen, the decaying of air output and the decaying of effective air supplying distance are all obviously speeded, and the decaying of effectively air supplying distance
Speed is apparently higher than the rate of decay of air output.By further testing, statistics indicate that, whenWhen, outlet air
The rate of decay of amount is substantially reduced；WhenWhen, effective air supplying distance is minimum.
When the rate of decay of air supplying distance is significantly greater than the rate of decay of air output, it can be inferred that air-supply section can be obvious
Increase, that is to say that air-flow can be diverged obviously and come.When needing remote air-supply, can be adjusted by rotating ratio adjustment module
Section, and by rotating ratioIt is grand to make effective air-supply that maximum distance can be realized between 0.9 to 1；And it is needing closely to blow
It, can be by rotating ratio adjustment module by rotating ratio and when needing air-flow fast spreadControl is in smaller value, for example, control
Between 0.4 to 0.6.
Conventional fan usually presets three gears, and the fan of the utility model can also carry out the default of gear, specifically,
Electric-controlled plate in the present embodiment includes gear adjustment module, and the gear adjustment module includes the editing machine of editable gear and deposits
Reservoir；The gear adjustment module further includes multiple preset gear selection keies and at least one customized gear selection key.This reality
Different air-out modes may be implemented with novel fan, therefore, preset gear is in addition to the gear of conventional controlled wind speed, also
Gear including air-out mode, such as include gentle breeze mode and gear and straight wind mode and gear in preset gear, it is pre- under gentle breeze mode
IfIt is preset under straight wind modeThe gear for cooperating different wind speed may be implemented more under gentle breeze mode
Multi gear outlet air under shelves outlet air and straight wind mode；The gear of normal mode can also be preset in preset gear, it is corresponding
Under the premise of keeping larger effective air supplying distance, air-flow has certain angle of divergence again, and wind sense is relatively mild.In addition to this,
User can be applicable in gear editing machine and carry out customized gear setting, and editable content includes gross output and rotating ratio,
It is saved in memory after the completion of editor, is associated with customized gear selection key, realizes the direct of customized air-out mode
Call selection.
It should be pointed out that changing the steering of motor, air-out direction by turning to adjustment module when using plane blade
On the contrary, the rotating ratio of the first fan blade 201 and the second fan blade 301Influence to air-out effect be not applicable in foregoing teachings directly,
It needs to replace with the rotating ratio of the second fan blade 301 and the first fan blade 201 by being invertedWhen using cambered surface blade, by turning
Change motor steering to adjustment module, air-out direction on the contrary, but air-out effect and difference when using plane blade, except whole
Outside outlet air ability is reduced, other aspects are substantially conformed to above content.
Technical solutions of the utility model drive that blade twist is contrary by using the motor of mutually opposing rotation
One fan blade 201 and the second fan blade 301 driving air control first motor 200 and the second electricity along axial outlet air, and by electric-controlled plate
The revolving speed of machine 300 is in certain ratio range, to adjust the air-out mode of fan, such as by the first fan blade 201 and the second wind
The rotating ratio of leaf 301Control can make air-flow perpendicular to the momentum of motor axial direction when in the range of [0.9,1.0]
Cancelled out each other to making air-flow more gather, air output is bigger, and air supplying distance is farther, so as to meet certain air-supply away from
Under the premise of demand, the revolving speed of first motor 200 and the second motor 300, and then noise when reduction fan work are reduced；And
By electric-controlled plate by the rotating ratio of the first fan blade 201 and the second fan blade 301Control can use general mood when within 0.55
Stream more quickly scatters, to meet the air-supply demand of infant and the elderly's gentle breeze mode；Further, it is also possible to pass through electric-controlled plate
Rotating ratio adjustment module adjust first motor 200 and the second motor 300 rotating ratio, so that it is quick from air-flow to have fan
The gentle breeze outlet air function of scattering gradually arrives the function of blowing at a distance that air-flow is gathered；By the editing machine of editable gear and deposit
The commonly used air-out mode of user can be carried out edit and storage by reservoir, and as customized gear and customized shelves
Position key be associated, after setting can with a key select without need every time using when carry out repeat setting.
Fan is other than the rotating ratio of its two motor will affect air-out effect, the blade quantity of first fan blade 201
n1, second fan blade 301 blade quantity n2, first fan blade 201 windup-degree θ1, second fan blade 301 torsion
Gyration θ2Numerical value and mutual relationship air-out effect can also be influenced.More influence factor joint effect wind
The outlet air ability of fan and when being difficult to specifically calculate, the relationship for how combining these influence factors is able to achieve optimal design with regard to face
Face the difficulty in theoretical and test.
For this purpose, defining the ratio between the blade quantity of first fan blade 201 and the blade quantity of the second fan blade 301 and described the
The product of the ratio between 301 windup-degree of one fan blade, 201 windup-degree and the second fan blade be the first fan blade 201 and the second fan blade 301 it
Between the first coefficient of variation；Define the blade area of first fan blade 201 and the ratio between the length of blade of first fan blade 201
It is the second difference system with the blade area of second fan blade 301 and the product of the ratio between the length of blade of second fan blade 301
Number.Then the first coefficient of variationSecond coefficient of variation
The reaction of first coefficient of variation is in the first fan blade 201 and the second fan blade 301 in blade shape, area, length, width
One timing of the other conditions such as degree, the ratio of the outlet air ability of itself；The reaction of second coefficient of variation is in 201 He of the first fan blade
One timing of the conditions such as the width of the blade quantity of the second fan blade 301, the windup-degree of blade and blade, the outlet air ability of itself
Ratio.
When the other conditions of constant gross output and blade are all the same, to different k1The fan of value carries out outlet air ability
Group experiment, it is as a result as follows:
| k1 | 0.5 | 0.6 | 0.7 | 0.8 | 0.9 | 1.0 | 1.1 | 1.2 | 1.3 |
| Air output (m3/h) | 522 | 705 | 850 | 950 | 986 | 988 | 970 | 945 | 830 |
| Air supplying distance (m) | 3.2 | 4.5 | 5.4 | 7.2 | 8.7 | 8.2 | 7.5 | 6.2 | 5.0 |
From above-mentioned data as can be seen that in k1When [0.7,1.2] ∈, the air output and air supplying distance of fan can reach
To preferable value range, and the optimum interval of air output and air supplying distance is k1∈ [0.9,1.1].
When the other conditions of constant gross output and blade are all the same, to different k2The fan of value carries out outlet air ability
Group experiment, it is as a result as follows:
| k2 | 0.6 | 0.7 | 0.8 | 0.9 | 1.0 | 1.1 | 1.2 | 1.3 | 1.4 |
| Air output (m3/h) | 615 | 745 | 851 | 876 | 869 | 860 | 845 | 751 | 683 |
| Air supplying distance (m) | 4.2 | 5.0 | 6.2 | 7.7 | 7.4 | 7.0 | 6.2 | 5.5 | 4.8 |
As can be seen that the optimum interval of the air output of fan and air supplying distance is k from data2∈ [0.8,1.2]
In addition, the length of the first fan blade 201, the length of the second fan blade 301 and the first fan blade 201 and the second fan blade 301 it
Between distance between relationship also will affect the outlet air ability of fan.
The outlet air ability of the fan of the utility model have benefited from the relative rotation of the first fan blade 201 and the second fan blade 301 and
The collective effect to air-flow generated, and when the spacing of the first fan blade 201 and the second fan blade 301 is excessive or the first fan blade 201
Length of blade and the length of blade of the second fan blade 301 when differing greatly, two fan blades are to rotation to the coefficient effect of air-flow
It can weaken, it is therefore desirable to which the ratio between the length of blade of the length of blade of the first fan blade 201 and the second fan blade 301 is set in a certain area
Between within, and by the ratio between the length of blade of the first fan blade 201 and the distance between the first fan blade 201 and the second fan blade 301 set
Within a certain section.
In this regard, fixed other influences factor, carry out the comparative test of unitary variant, the length of blade of the first fan blade 201 with
The influence of the comparison air output and air supplying distance of the length of blade of second fan blade 301, data are as follows:
| l1/l2 | 0.6 | 0.7 | 0.8 | 0.9 | 1.0 | 1.1 | 1.2 | 1.3 | 1.4 |
| Air output (m3/h) | 701 | 765 | 821 | 842 | 840 | 817 | 800 | 771 | 683 |
| Air supplying distance (m) | 3.6 | 4.7 | 5.6 | 6.9 | 7.0 | 6.4 | 5.2 | 4.9 | 3.2 |
Between the length of blade of first fan blade 201 and the first fan blade 201 and the second fan blade 301 ratio of distances constant to air output and
The influence of air supplying distance, data are as follows:
| l1/L | 1 | 1.5 | 2 | 2.5 | 3 | 3.5 |
| Air output (m3/h) | 785 | 821 | 842 | 856 | 830 | 828 |
| Air supplying distance (m) | 6.7 | 7.4 | 8.2 | 7.7 | 7.6 | 7.0 |
From above data it can be concluded that,Preferable value interval be [0.8,1.3]；Preferable value interval be
[1.5,3]；AndBest value interval is [0.9,1.1],Best value interval be [2,2.5].
Influence is various to the factor of counter-rotating fan outlet air ability, and has certain association between each factor, causes difficulty or ease true
Specific setting when fixed outlet air best to counter-rotating fan.The utility model obtains each influence by a series of comparative test of original creation
Preferable ratio between factor, and defined and influence to the first fan blade 201 of counter-rotating fan outlet air ability and the second fan blade 301
The ratio and value interval of each factor make the outlet air ability to counter-rotating fan reach best.
Above-described embodiment be using the specific embodiment of the fan of double fan blades, for further increase the air-supply of fan away from
From the utility model is on the basis of double fan blades, it is also proposed that another embodiment.
Referring to figure 4., the present embodiment fan further includes third fan blade 400, increases third fan blade 400 in double fan blades to back-out
On the basis of wind, it can carry out further rectifying adjusting, increase farthest air supplying distance.Specifically, the third fan blade 400 is pacified
Loaded on the first rotating shaft 202；The third fan blade 400 is set to another opposite with second fan blade 301 of the first fan blade 201
Side, and the length of blade of the third fan blade 400 is less than the length of blade of first fan blade 201.
Fan blade can change the flow velocity and flow direction of air-flow, using can be to air-flow into secondary adjustment when two groups of fan blades, and pass through
Two groups of fan blades are specifically set and are adjusted to achieve the purpose that artificially to adjust air-out effect, accordingly, this is practical
It is novel to propose the embodiment of above-mentioned two groups of fan blade fans.And it will receive the obstruction of surrounding air when air-flow flowing, therefore air-flow
Boundary have biggish unstability.Air-flow equivalent can divide into air flow stream center and air flow stream frontier district, compare it
Under, influence of the flow velocity of air flow stream center to air supplying distance is bigger, and air flow stream frontier district is affected to the angle of air-supply.
Therefore, the utility model proposes the embodiments for increasing rectification fan blade on the basis of above-mentioned double fan blades.
Wherein, third fan blade 400 be rectification fan blade, rectification fan blade be mainly used for adjust air flow stream center regional percentage and
Flow velocity has reached in the case where general power is constant, and the range and ratio by adjusting air flow stream center and frontier district obtain
Farther air supplying distance.
On this basis, to improve stability when fan operation and further increasing the detectability of rectification fan blade, this
Utility model proposes another embodiment, and fan further includes the 4th fan blade 500 in the present embodiment, and the 4th fan blade 500 is installed on
Second shaft 302 and be set between first fan blade 201 and second fan blade 301.Likewise, the 4th fan blade
500 length of blade is less than the length of blade of second fan blade 301.It should be pointed out that rectification fan blade can be used individually
Third fan blade 400 and the 4th fan blade 500 can also be arranged in third fan blade 400 or the 4th fan blade 500 simultaneously.
It rectifies fan blade and the first fan blade 201 and the second fan blade 301 cooperates, the adjustability of air-flow can be made stronger, and it is whole
The fan blade driving effect additional to air-flow is flowed, and the additional driving effect concentrates on wind beam center region, adjustable fan
The center of produced air flow stream and the regional percentage of frontier district and flow rate, to obtain farther outlet air distance.
The above is only the preferred embodiment of the present invention, and therefore it does not limit the scope of the patent of the utility model,
It is all under the inventive concept of the utility model, equivalent structure made based on the specification and figures of the utility model becomes
It changes, or directly/be used in other related technical areas indirectly and be included in the scope of patent protection of the utility model.
Claims (14)
1. a kind of fan characterized by comprising
Bracket；
First motor, is installed on the bracket, and the first motor has first rotating shaft；
First fan blade is installed on the first rotating shaft；
Second motor, is installed on the bracket, and second motor has the second shaft；Second motor and first electricity
Machine coaxial arrangement；
Second fan blade is installed on second shaft；The inclination side of the inclined direction of second fan blade and first fan blade
To opposite；
Electric-controlled plate, the electric-controlled plate are electrically connected the first motor and second motor and control the first motor and described
Second motor relative rotation.
2. fan as described in claim 1, which is characterized in that the electric-controlled plate includes rotating ratio adjustment module, speed adjusting module
With steering adjustment module；Wherein, the rotating ratio adjustment module is for adjusting and fixing the first motor and second electricity
The ratio between machine revolving speed, the speed adjusting module are used to be adjusted in synchronism the revolving speed of the first motor Yu second motor, the steering
Adjustment module is used to switch the rotation direction of the first motor and second motor.
3. fan as claimed in claim 2, which is characterized in that the steering adjustment module includes protective switch, described
First motor and second motor cut off the steering adjustment module when working.
4. fan as claimed in claim 2, which is characterized in that the electric-controlled plate further includes gear adjustment module, the gear
Adjustment module includes the editing machine and memory of editable gear；The gear adjustment module further includes multiple preset gear selections
Key and at least one customized gear selection key.
5. fan as described in claim 1, which is characterized in that the blade quantity of first fan blade is n1, second fan blade
Blade quantity be n2；The windup-degree of first fan blade is a1, the windup-degree of second fan blade is θ2；Described in definition
The ratio between blade quantity of the blade quantity of first fan blade and the second fan blade and the first fan blade windup-degree and the second fan blade are turned round
The product of the ratio between gyration is the first coefficient of variation, then the first coefficient of variation
The first coefficient of variation k1∈ [0.7,1.2].
6. fan as claimed in claim 5, which is characterized in that the then first coefficient of variation k1∈ [0.9,1.1].
7. fan as claimed in claim 5, which is characterized in that the length of blade of first fan blade is l1, area S1, institute
The length of blade for stating the second fan blade is l2, area S2；Define the blade area of first fan blade and the leaf of first fan blade
The product of the ratio between the length of blade of the ratio between leaf length and the blade area of second fan blade and second fan blade is second poor
Different coefficient, then the second coefficient of variation
The second coefficient of variation k2∈ [0.8,1.2].
8. fan as claimed in claim 7, which is characterized in that。
9. fan as claimed in claim 8, which is characterized in that first fan blade is L with the second fan blade spacing；Then
10. fan as claimed in claim 9, which is characterized in that。
11. fan as described in claim 1, which is characterized in that the fan further includes third fan blade, the third fan blade peace
Loaded on the first rotating shaft.
12. fan as claimed in claim 11, which is characterized in that the third fan blade is set to the outside of the first fan blade, and institute
The length of blade for stating third fan blade is less than the length of blade of first fan blade.
13. the fan as described in any one of claim 1 to 12 claim, which is characterized in that the fan further includes the 4th
Fan blade, the 4th fan blade are installed on second shaft.
14. fan as claimed in claim 13, which is characterized in that the 4th fan blade is set to first fan blade and described the
Between two fan blades, and the length of blade of the 4th fan blade is less than the length of blade of second fan blade.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821084768.1U CN208778287U (en) | 2018-07-09 | 2018-07-09 | Fan |
| US17/058,608 US11512703B2 (en) | 2018-07-09 | 2018-12-26 | Fan for adjusting air flow |
| KR1020207032593A KR102505058B1 (en) | 2018-07-09 | 2018-12-26 | fan |
| JP2020568786A JP7069355B2 (en) | 2018-07-09 | 2018-12-26 | Fan |
| PCT/CN2018/123808 WO2020010807A1 (en) | 2018-07-09 | 2018-12-26 | Fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821084768.1U CN208778287U (en) | 2018-07-09 | 2018-07-09 | Fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208778287U true CN208778287U (en) | 2019-04-23 |
Family
ID=66153826
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821084768.1U Active CN208778287U (en) | 2018-07-09 | 2018-07-09 | Fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208778287U (en) |
-
2018
- 2018-07-09 CN CN201821084768.1U patent/CN208778287U/en active Active
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