CN204371777U - Fan blade and there is its fan - Google Patents
Fan blade and there is its fan Download PDFInfo
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- CN204371777U CN204371777U CN201420854074.7U CN201420854074U CN204371777U CN 204371777 U CN204371777 U CN 204371777U CN 201420854074 U CN201420854074 U CN 201420854074U CN 204371777 U CN204371777 U CN 204371777U
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Abstract
The utility model discloses a kind of fan blade and there is its fan, fan blade comprises: the outer leafs that outer wheel hub, inner wheel hub, multiple intra vane and multiple structure are identical, inner wheel hub is located in outer wheel hub, multiple intra vane to be connected between the periphery wall of inner wheel hub and the inner circle wall of outer wheel hub and spaced apart setting in the circumference of inner wheel hub, on the periphery wall that multiple outer leafs is connected to outer wheel hub and spaced apart setting in the circumference of outer wheel hub, wherein the cross section of each outer leafs is formed as aerofoil profile.According to fan blade of the present utility model, by arranging multiple intra vane and multiple outer leafs, thus can wind concentration be ensured, the problem that the wind avoiding intra vane to send is dispersed too early and cannot be blown at a distance, and then increase air supplying distance, and due to multiple outer leafs be the airfoil fan that structure is identical, thus the aeroperformance of single outer leafs and the aeroperformance of multiple outer leafs entirety can be improved, thus improve the aeroperformance of fan blade, reduce the power consumpiton of fan blade, save the energy.
Description
Technical field
The utility model relates to fan apparatus field, especially relates to a kind of fan blade and has its fan.
Background technique
Individual layer blade structure in correlation technique, it is more serious that the wind of producing by boasting is dispersed, need relatively high power could wind is far away, therefore energy consumption is large, in smaller power, remote consentrated air supply is realized in order to make fan blade, occurred double-layer wind impeller structure in correlation technique, double-layer wind impeller structure can ensure wind concentration, reaches air supplying distance far away.But because the leaf internal layer blade of the double-deck fan blade in correlation technique is less, and the overall rotating speed of fan blade is lower, thus little to overall airflow influence, and due to the structure of blade too random, adverse influence may be brought to flowing, make the aeroperformance of fan blade entirety bad, advantage is also not obvious.
Model utility content
The utility model is intended at least to solve one of technical problem existed in prior art.For this reason, the utility model is to propose a kind of fan blade, and described fan blade has good aeroperformance.
The utility model also proposes a kind of fan with above-mentioned fan blade.
According to the fan blade of the utility model first aspect, comprising: outer wheel hub; Inner wheel hub, described inner wheel hub is located in described outer wheel hub; Multiple intra vane, described multiple intra vane to be connected between the periphery wall of described inner wheel hub and the inner circle wall of described outer wheel hub and spaced apart setting in the circumference of described inner wheel hub; And the outer leafs that multiple structure is identical, on the periphery wall that described multiple outer leafs is connected to described outer wheel hub and spaced apart setting in the circumference of described outer wheel hub, wherein the cross section of each described outer leafs is formed as aerofoil profile.
According to fan blade of the present utility model, by arranging multiple intra vane and multiple outer leafs, thus can wind concentration be ensured, the problem that the wind avoiding intra vane to send is dispersed too early and cannot be blown at a distance, and then increase air supplying distance, and due to multiple outer leafs be the airfoil fan that structure is identical, thus the aeroperformance of single outer leafs and the aeroperformance of multiple outer leafs entirety can be improved, thus improve the aeroperformance of fan blade, reduce the power consumpiton of fan blade, save the energy.
Particularly, the structure of described multiple intra vane is all identical and sectional shape that is each described intra vane is formed as aerofoil profile.
Particularly, the sectional shape of each described intra vane and/or the sectional shape of each described outer leafs are formed as Goe118 aerofoil profile, Goe115 aerofoil profile, Goe123 aerofoil profile, NACA0006 aerofoil profile or NACA6409 aerofoil profile.
Further, each described intra vane and each described outer leafs are all formed as twisted blade, outer rim flow inlet angle β 1 and the inner edge flow inlet angle β 2 of each described intra vane meet relation: β 1< β 2, and outer rim flow inlet angle α 1 and the inner edge flow inlet angle α 2 of each described outer leafs meet relation: α 1< α 2.
Particularly, described α 1 meets: 10 °≤a1≤15 °, described α 1 and described α 2 meets further: α 1+5 °≤α 2≤α 1+10 °.
Preferably, along described inner wheel hub radial direction from inside to outside, the flow inlet angle of each described intra vane reduces gradually, along described inner wheel hub radial direction from inside to outside, the flow inlet angle of each described outer leafs reduces gradually, and the minimum flow inlet angle of described intra vane is greater than the full admission angle of described outer leafs.
Particularly, the axial width of described outer leafs is equal with the axial width of described intra vane.
Particularly, the outer rim leading edge point of each described intra vane and the line of inner edge leading edge point are projected as straight line in the reference level of the spin axis perpendicular to described fan blade, the outer rim trailing edge point of each described intra vane and the line of inner edge trailing edge point are projected as straight line in described reference level, the outer rim leading edge point of each described outer leafs and the line of inner edge leading edge point are projected as curve in described reference level, and the outer rim trailing edge point of each described outer leafs and the line of inner edge trailing edge point are projected as curve in described reference level.
Particularly, the outer diameter D 2 of described outer wheel hub meets relation with the diameter D1 of described fan blade: D2≤0.5D1.
According to the fan of the utility model second aspect, comprise the fan blade according to the utility model first aspect.
According to fan of the present utility model, by arranging the fan blade of above-mentioned first aspect, thus improve the overall performance of fan.
Additional aspect of the present utility model and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present utility model.
Accompanying drawing explanation
Fig. 1 is the stereogram of the fan blade according to the utility model embodiment;
Fig. 2 is the plan view of the fan blade shown in Fig. 1;
Fig. 3 is the rear view of the fan blade shown in Fig. 1;
Fig. 4 is the side view of the fan blade shown in Fig. 1;
Fig. 5 is the cross section, inner edge of the outer leafs shown in Fig. 1 and the local expansion schematic diagram in outer rim cross section.
Reference character:
100: fan blade;
1: outer wheel hub; 2: inner wheel hub; 21: mounting hole;
3: intra vane; 3a: the inner edge of intra vane; 3b: the outer rim of intra vane;
3c: the leading edge of intra vane; 3d: the trailing edge of intra vane;
4: outer leafs; 4a: the inner edge of outer leafs; 4b: the outer rim of outer leafs;
4c: the leading edge of outer leafs; 4d: the trailing edge of outer leafs.
Embodiment
Be described below in detail embodiment of the present utility model, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Be exemplary below by the embodiment be described with reference to the drawings, be intended to for explaining the utility model, and can not be interpreted as restriction of the present utility model.
Disclosing hereafter provides many different embodiments or example is used for realizing different structure of the present utility model.Of the present utility model open in order to simplify, hereinafter the parts of specific examples and setting are described.Certainly, they are only example, and object does not lie in restriction the utility model.In addition, the utility model can in different example repeat reference numerals and/or letter.This repetition is to simplify and clearly object, itself does not indicate the relation between discussed various embodiment and/or setting.In addition, the various specific technique that the utility model provides and the example of material, but those of ordinary skill in the art can recognize the property of can be applicable to of other techniques and/or the use of other materials.
Below with reference to Fig. 1-Fig. 5, the fan blade 100 according to the utility model first aspect embodiment is described.
As shown in Figure 1, according to the fan blade 100 of the utility model first aspect embodiment, comprising: outer wheel hub 1, inner wheel hub 2, multiple intra vane 3 and multiple outer leafs 4.
Particularly, with reference to Fig. 1, inner wheel hub 2 is located in outer wheel hub 1, multiple intra vane 3 is connected between the periphery wall of inner wheel hub 2 and the inner circle wall of outer wheel hub 1, and multiple outer leafs 4 is connected on the periphery wall of outer wheel hub 1, here, it should be noted that, " interior " can be understood as the direction towards inner wheel hub 2 central axis, and its opposite direction is defined as " outward ", namely away from the direction of inner wheel hub 2 central axis.
With reference to Fig. 1-Fig. 3, inner wheel hub 2 can be formed as cylindrical substantially, outer wheel hub 1 can be formed as annulus cylindricality substantially, outer wheel hub 1 is set in outside inner wheel hub 2 coaxially, that is, inner wheel hub 2 is located in outer wheel hub 1 coaxially, each intra vane 3 all extends out to the inner circle wall of outer wheel hub 1 from the periphery wall of inner wheel hub 2, and the inner edge 3a of each intra vane 3 is all fixedly linked with the periphery wall of inner wheel hub 2, the outer rim 3b of each intra vane 3 is all fixedly linked with the inner circle wall of outer wheel hub 1, each outer leafs 4 all stretches out from the periphery wall of outer wheel hub 1, and the inner edge 4a of each outer leafs 4 is all fixedly linked with the periphery wall of outer wheel hub 1.
As shown in Figure 3, multiple intra vane 3 is spaced apart setting in the circumference of inner wheel hub 2, and multiple outer leafs 4 is spaced apart setting in the circumference of outer wheel hub 1.That is, two intra vanes 3 of arbitrary neighborhood are spaced apart from each other in the circumference of inner wheel hub 2, and two outer leafs 4 of arbitrary neighborhood are spaced apart from each other in the circumference of outer wheel hub 1.Preferably, multiple intra vane 3 is evenly spaced apart in the circumference of inner wheel hub 2, and multiple outer leafs 4 is evenly spaced apart in the circumference of outer wheel hub 1.That is, two intra vanes 3 isolated distance in the circumference of inner wheel hub 2 of arbitrary neighborhood is all equal, and two outer leafs 4 isolated distance in the circumference of outer wheel hub 1 of arbitrary neighborhood is all equal.
Preferably, inner wheel hub 2, outer wheel hub 1, multiple intra vane 3, multiple outer leafs 4 are one-body molded, such as can adopt the technique integrated injection molding of injection moulding, and then improve the intensity of fan blade 100, thus ensure there is no mutually movable parts in fan blade 100, ensure the reliable performance of fan blade 100 entirety, and be convenient to processing.Like this, because fan blade 100 comprises intra vane 3 and the outer leafs 4 of inside and outside setting, thus can wind concentration be ensured, the problem that the wind avoiding intra vane 3 to send is dispersed too early and cannot be blown at a distance, and then increase air supplying distance.
Particularly, the structure of multiple outer leafs 4 is all identical, that is, the overall structure of each outer leafs 4 is all identical, thus multiple outer leafs 4 can be copied by an outer leafs 4 and obtains, wherein, the sectional shape of each outer leafs 4 is formed as aerofoil profile, that is, each outer leafs 4 is airfoil fan, namely in the radial direction of outer wheel hub 1 (namely inner wheel hub 2), the sectional shape of each outer leafs 4 is all formed as aerofoil profile.Here, it should be noted that, in the radial direction of outer wheel hub 1, the aerofoil profile that formed of the sectional shape of each outer leafs 4 can be different, the aerofoil profile that the outer rim 4b cross section of such as each outer leafs 4 is formed can be different from the aerofoil profile that its inner rim 4a cross section is formed, certainly, in the radial direction of outer wheel hub 1, the aerofoil profile that formed of the sectional shape of each outer leafs 4 can also be identical everywhere.Here, be understandable that, the concept of " aerofoil profile " is well known to those skilled in the art, and no longer describes in detail here.
Thus, because airfoil fan has good aeroperformance, thus each outer leafs 4 has good aeroperformance, and then improve the aeroperformance of fan blade 100 entirety, reduce power consumpiton, save the energy (such as electric energy), and due to multiple outer leafs 4 are airfoil fans that structure is consistent, thus the aeroperformance of multiple outer leafs 4 entirety can be improved further, further reduce power consumpiton, save the energy (such as electric energy).
According to the fan blade 100 of the utility model embodiment, by arranging multiple intra vane 3 and multiple outer leafs 4, thus can wind concentration be ensured, the problem that the wind avoiding intra vane 3 to send is dispersed too early and cannot be blown at a distance, and then increase air supplying distance, and due to multiple outer leafs 4 be the airfoil fan that structure is identical, thus the aeroperformance of single outer leafs 4 and the aeroperformance of multiple outer leafs 4 entirety can be improved, thus improve the aeroperformance of fan blade 100, reduce the power consumpiton of fan blade 100, save the energy.In addition, because the structure of multiple outer leafs 4 is identical, thus be convenient to processing.
In an embodiment of the present utility model, with reference to Fig. 1, the structure of multiple intra vane 3 is all identical, and that is, the overall structure of each intra vane 3 is all identical, thus multiple intra vane 3 can be copied by an intra vane 3 and obtains, wherein, the sectional shape of each intra vane 3 is formed as aerofoil profile, that is, each intra vane 3 is airfoil fan, namely in the radial direction of inner wheel hub 2, the sectional shape of each intra vane 3 is all formed as aerofoil profile.Thus, the aeroperformance of single intra vane 3 and the aeroperformance of multiple intra vane 3 entirety can be improved, thus improve the aeroperformance of fan blade 100, reduce the power consumpiton of fan blade 100, saved the energy.In another, because the structure of multiple intra vane 3 is identical, thus be convenient to processing.
Here, it should be noted that, in the radial direction of inner wheel hub 2, the aerofoil profile that formed of the sectional shape of each intra vane 3 can be different, the aerofoil profile that the aerofoil profile of 3a cross section, the inner edge formation of such as each intra vane 3 can be formed from its outer rim 3b cross section is different, certainly, in the radial direction of inner wheel hub 2, the aerofoil profile that formed of the sectional shape of each intra vane 3 can also be identical everywhere.
Alternatively, the sectional shape of each intra vane 3 can be formed as Goe118 aerofoil profile, Goe115 aerofoil profile, Goe123 aerofoil profile, NACA0006 aerofoil profile or NACA6409 aerofoil profile, and the sectional shape of each outer leafs 4 also can be formed as Goe118 aerofoil profile, Goe115 aerofoil profile, Goe123 aerofoil profile, NACA0006 aerofoil profile or NACA6409 aerofoil profile.Thus, to improve the aeroperformance of intra vane 3, outer leafs 4.
That is, in the radial direction of inner wheel hub 2, when the aerofoil profile that the sectional shape of each outer leafs 4 is formed is identical everywhere, the aerofoil profile that the sectional shape of each outer leafs 4 is formed can be Goe118 aerofoil profile, Goe115 aerofoil profile, Goe123 aerofoil profile, one among NACA0006 aerofoil profile and NACA6409 aerofoil profile, and in the radial direction of inner wheel hub 2, when the aerofoil profile that the sectional shape of each outer leafs 4 is formed is different, the aerofoil profile that the sectional shape of each outer leafs 4 is formed can also comprise Goe118 aerofoil profile, Goe115 aerofoil profile, Goe123 aerofoil profile, one or more in NACA0006 aerofoil profile and NACA6409 aerofoil profile.
That is, in the radial direction of inner wheel hub 2, when the aerofoil profile that the sectional shape of each intra vane 3 is formed is identical everywhere, the aerofoil profile that the sectional shape of each intra vane 3 is formed can be Goe118 aerofoil profile, Goe115 aerofoil profile, Goe123 aerofoil profile, one among NACA0006 aerofoil profile and NACA6409 aerofoil profile, and in the radial direction of inner wheel hub 2, when the aerofoil profile that the sectional shape of each intra vane 3 is formed is different, the aerofoil profile that the sectional shape of each intra vane 3 is formed can also comprise Goe118 aerofoil profile, Goe115 aerofoil profile, Goe123 aerofoil profile, one or more in NACA0006 aerofoil profile and NACA6409 aerofoil profile.
Certainly, the utility model is not limited thereto, and the sectional shape of each intra vane 3 and the sectional shape of each outer leafs 4 all can design according to actual requirement, such as, can be formed as other aerofoil profile, to meet actual requirement better.
Here, it should be noted that, when in the radial direction at inner wheel hub 2, the aerofoil profile that formed of the sectional shape of each intra vane 3 is identical everywhere, and when the aerofoil profile that formed of the sectional shape of each outer leafs 4 is also everywhere identical, the sectional shape of outer leafs 4 can be identical or different from the sectional shape of intra vane 3.
In an embodiment of the present utility model, as shown in Figure 3, each intra vane 3 and each outer leafs 4 are all formed as twisted blade, and the flow inlet angle β 2 of the outer rim 3b of each intra vane 3 is all less than the flow inlet angle β 1 of inner edge 3a, namely the inner edge 3a flow inlet angle β 1 of each intra vane 3 and outer rim 3b flow inlet angle β 2 meets relation: β 1< β 2, thus, and that produce gas current friction loss excessive by inner edge 3a to outer rim 3b flow parameter difference due to intra vane 3 can be reduced, thus improve gas flow efficiency.
As shown in Figure 3 and Figure 5, the flow inlet angle α 2 of the outer rim 4b of each outer leafs 4 is all less than the flow inlet angle α 1 of inner edge 4a, and namely the outer rim 4b flow inlet angle α 1 of each outer leafs 4 and inner edge 4a flow inlet angle α 2 meets relation: α 1< α 2.Thus, and that produce gas current friction loss excessive by inner edge 4a to outer rim 4b flow parameter difference due to outer leafs 4 can be reduced, thus further increase gas flow efficiency.
Here, it should be noted that, as shown in Figure 5, when fan blade 100 rotates according to the arrow R indicated direction shown in Fig. 5, " flow inlet angle " (import flow inlet angle) (α such as shown in Fig. 51 jiao) refers to the speed v direction of airflow inlet E1 and the angle of blade profile mean camber line Lm tangent line, wherein, " airflow inlet E1 " is the initial position that air-flow enters blade, correspondingly, " flow outlet E2 " (the γ angle such as shown in Fig. 5) is the terminal position that air-flow leaves blade, " mean camber line Lm " is the line of the geometry mid point of blade profile both sides, it characterizes the characteristic of blade profile aerofoil profile.
With reference to Fig. 5, in figure, solid line is the outer rim 4b cross section aerofoil profile of the outer leafs 4 according to the utility model embodiment, dotted line is 4a cross section, the inner edge aerofoil profile of the outer leafs 4 according to the utility model embodiment, as can be seen from the figure, the flow inlet angle α 2 of 4a cross section, inner edge aerofoil profile is greater than the flow inlet angle α 1 of outer rim 4b cross section aerofoil profile, thus, can significantly draw, outer leafs 4 is twisted blade.Preferably, meet relation, α 1+5 °≤α 2≤α 1+10 ° for an outer leafs 4, outer rim 4b flow inlet angle α 1 and inner edge 4a flow inlet angle α 2, wherein, the outer rim 4b flow inlet angle α 1 of outer leafs 4 meets: 10 °≤α 1≤15 °.
Preferably, along inner wheel hub 2 radial direction from inside to outside, the flow inlet angle of each outer leafs 4 reduces gradually, along inner wheel hub 2 radial direction from inside to outside, the flow inlet angle of each outer leafs 4 reduces gradually, and the minimum flow inlet angle of intra vane 3 is greater than the full admission angle of outer leafs 4, that is: α 1< α 2< β 1< β 2.Thus, because intra vane 3 adopts the air inlet angle large compared with outer leafs 4, the intensity of central gas stream can be improved further, the aeroperformance of fan blade 100 entirety can be ensured further.In brief, fan blade 100 adopts outer rim flow inlet angle to be less than the twisted blade of inner edge flow inlet angle, can improve the aeroperformance of blade, reduces flow losses, reduces energy consumption.
In an embodiment of the present utility model, with reference to Fig. 4, the axial width of outer leafs 4 is equal with the axial width of intra vane 3, and equal respectively with the axial width of inner wheel hub 2 with the axial width of inner wheel hub 2, thus be convenient to processing and assembling, and effect of blowing can be ensured.
In an embodiment of the present utility model, with reference to Fig. 2 and Fig. 3, the inner edge 3a of each intra vane 3, leading edge 3c intersection point and outer rim 3b, the line L1 of leading edge 3c intersection point is projected as straight line in reference level, the inner edge 3a of each intra vane 3, trailing edge 3d intersection point and outer rim 3b, the line L2 of trailing edge 3d intersection point is projected as straight line in reference level, the outer rim 4b of each outer leafs 4, leading edge 4c intersection point and inner edge 4a, the line L3 of leading edge 4c intersection point is projected as curve in reference level, the outer rim 4b of each outer leafs 4, trailing edge 4d intersection point and inner edge 4a, the line L4 of trailing edge 4d intersection point is projected as curve in reference level.Wherein, reference level is the plane of the spin axis perpendicular to fan blade 100, namely perpendicular to the plane of inner wheel hub 2 central axis.Thus, the overall efficiency of fan blade 100 can be improved further.
Preferably, the established angle of each intra vane 3 is identical, the established angle of each outer leafs 4 is also identical, thus the identical intra vane 3 of multiple structure can be obtained by intra vane 3 annular array, and the outer leafs 4 that multiple structure is identical can be obtained by outer leafs 4 annular array.Here, illustrate when needing, " established angle " is well known to those skilled in the art, and no longer describes in detail here.
In an embodiment of the present utility model, the outer diameter D 2 of outer wheel hub 1 meets relation with the diameter D1 of fan blade 100: D2≤0.5D1, and that is, the outer diameter D 2 of outer wheel hub 1 meets relation with the diameter D1 of the outer rim 4b of outer leafs 4: D2≤0.5D1, preferably, 180mm≤D1≤400mm.Thus, can ensure that the size of intra vane 3 is comparatively large, ensure that blade 100 can be concentrated more, more stably realize remote air-supply.Here, it should be noted that, according to the embody rule requirement of fan blade 100, can according to the outer rim 4b diameter D1 of the outer diameter D 2 with outer leafs 4 that zoom in or out outer wheel hub 1 with certain proportion simultaneously, with under the prerequisite ensureing fan blade 100 performance, meet application request.
Below with reference to Fig. 1-Fig. 5, the fan blade 100 according to the utility model embodiment is described.
Particularly, intra vane 3 is five, and five intra vane 3 uniform intervals distributions on the periphery wall of inner wheel hub 2, outer leafs 4 is seven, and seven outer leafs 4 uniform intervals distributions on the periphery wall of outer wheel hub 1, the structure of five intra vanes 3 is all identical and established angle is all identical, and the structure of seven outer leafs 4 is all identical and established angle is all identical, the axial width l of each intra vane 3 is 40mm, and the axial width L of each outer leafs 4 is 40mm.
The inner edge 3a diameter d of each intra vane 3
2for 50mm, namely the outer circumference diameter of inner wheel hub 2 is 50mm, the outer rim 3b diameter d of each intra vane 3
1for 122mm, namely the inner circumferential diameter of outer wheel hub 1 is 122mm, and the thickness h of outer wheel hub 1 is 3mm, and namely the outer circumference diameter of outer wheel hub 1 is 125mm, thus the inner edge 4a diameter D of each outer leafs 4
2for 128mm, the outer rim 4b diameter D of each outer leafs 4
1for 230mm.Alternatively, inner wheel hub 2 can be formed with motor output shaft mounting hole 21, and the diameter of mounting hole 21 can be 8mm.
Like this, fan blade 100 is in the process of work, such as in the figure 2 example, the clockwise direction that fan blade 100 is pressed in figure shown in arrow rotates, the direction motion of air toward outlet can be promoted, thus the wind that outer leafs 4 exports forward is larger, and the wind that intra vane 3 exports is less, like this, the inside and outside both sides of outer wheel hub 1 are formed with one air-flow respectively, like this, inside and outside two strands of air-flows are in intersection's phase mutual friction, centrifugal diffusion is greatly diminished, thus the wind that fan blade 100 blows out relatively is concentrated, do not dispersed, thus wind can be delivered to position far away.The fan blade 100 only with one deck blade in correlation technique, due to the effect of centrifugal force, the wind sent is very fast to be got rid of to surrounding, and central gas stream is more weak, thus at distance slightly far away just imperceptible wind, that is, air supplying distance is shorter.In addition, the existence due to interior stock air-flow also eliminates exit flow whirlpool problem, thus improves flow efficiency, therefore makes fan blade 100 air-flow can be pushed to steadily front more remote.
Further, because fan blade 100 adopts airfoil fan, thus compared with the blade of common equal thickness, such as plate blade, excellent performance, less flow losses, improve flow efficiency.And, because outer leafs 4 and intra vane 3 all adopt inner edge flow inlet angle to be greater than the twisted blade structure of outer rim flow inlet angle, thus meet air current flow rule, decrease the flow losses of air-flow on blade, in addition, because intra vane 3 adopts the air inlet angle large compared with outer leafs 4, the intensity of central gas stream can be improved further, especially at high speed, the aeroperformance of fan blade 100 is more excellent, and has saved a large amount of electric energy.
By limiting the quantity of intra vane 3 and outer leafs 4, can ensure that fan blade 100 has higher rotating speed, making the advantage of the fan blade 100 with airfoil fan more obvious, thus significantly reducing the flow losses of air-flow, decreasing energy consumption.
According to the fan (scheming not shown) of the utility model second aspect embodiment, comprise the fan blade 100 according to the above-mentioned first aspect embodiment of the utility model.Alternatively, fan can be desk fan, eddy current fan and slide fan etc.
Be all known according to other configuration examples of the fan of the utility model embodiment for those of ordinary skills as frame set and control unit etc. and operation, be not described in detail here.
According to the fan of the utility model embodiment, by arranging the fan blade 100 of above-mentioned first aspect embodiment, thus improve the overall performance of fan.
In description of the present utility model, it will be appreciated that, term " orientation or the position relationship of the instruction such as " center ", " interior ", " outward ", " clockwise ", " counterclockwise ", " axis ", " radial direction ", " circumference " they be based on orientation shown in the drawings or position relationship; be only the utility model and simplified characterization for convenience of description; instead of instruction or imply the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as restriction of the present utility model.
In the utility model, unless otherwise clearly defined and limited, the term such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or integral; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals or the interaction relationship of two elements.For the ordinary skill in the art, the concrete meaning of above-mentioned term in the utility model can be understood as the case may be.
In the description of this specification, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present utility model or example.In this manual, to the schematic representation of above-mentioned term not must for be identical embodiment or example.And the specific features of description, structure, material or feature can combine in one or more embodiment in office or example in an appropriate manner.In addition, when not conflicting, the feature of the different embodiment described in this specification or example and different embodiment or example can carry out combining and combining by those skilled in the art.
Although illustrate and described embodiment of the present utility model, those having ordinary skill in the art will appreciate that: can carry out multiple change, amendment, replacement and modification to these embodiments when not departing from principle of the present utility model and aim, scope of the present utility model is by claim and equivalents thereof.
Claims (10)
1. a fan blade, is characterized in that, comprising:
Outer wheel hub;
Inner wheel hub, described inner wheel hub is located in described outer wheel hub;
Multiple intra vane, described multiple intra vane to be connected between the periphery wall of described inner wheel hub and the inner circle wall of described outer wheel hub and spaced apart setting in the circumference of described inner wheel hub; And
The outer leafs that multiple structure is identical, on the periphery wall that described multiple outer leafs is connected to described outer wheel hub and spaced apart setting in the circumference of described outer wheel hub, wherein the cross section of each described outer leafs is formed as aerofoil profile.
2. fan blade according to claim 1, is characterized in that, the structure of described multiple intra vane is all identical and sectional shape that is each described intra vane is formed as aerofoil profile.
3. fan blade according to claim 2, it is characterized in that, the sectional shape of each described intra vane and/or the sectional shape of each described outer leafs are formed as Goe118 aerofoil profile, Goe115 aerofoil profile, Goe123 aerofoil profile, NACA0006 aerofoil profile or NACA6409 aerofoil profile.
4. fan blade according to claim 1, it is characterized in that, each described intra vane and each described outer leafs are all formed as twisted blade, outer rim flow inlet angle β 1 and the inner edge flow inlet angle β 2 of each described intra vane meet relation: β 1< β 2, and outer rim flow inlet angle α 1 and the inner edge flow inlet angle α 2 of each described outer leafs meet relation: α 1< α 2.
5. fan blade according to claim 4, is characterized in that, described α 1 meets: 10 °≤a1≤15 °, described α 1 and described α 2 meets further: α 1+5 °≤α 2≤α 1+10 °.
6. fan blade according to claim 4, it is characterized in that, along described inner wheel hub radial direction from inside to outside, the flow inlet angle of each described intra vane reduces gradually, along described inner wheel hub radial direction from inside to outside, the flow inlet angle of each described outer leafs reduces gradually, and the minimum flow inlet angle of described intra vane is greater than the full admission angle of described outer leafs.
7. fan blade according to claim 1, is characterized in that, the axial width of described outer leafs is equal with the axial width of described intra vane.
8. fan blade according to claim 1, it is characterized in that, the outer rim leading edge point of each described intra vane and the line of inner edge leading edge point are projected as straight line in the reference level of the spin axis perpendicular to described fan blade, the outer rim trailing edge point of each described intra vane and the line of inner edge trailing edge point are projected as straight line in described reference level
The outer rim leading edge point of each described outer leafs and the line of inner edge leading edge point are projected as curve in described reference level, and the outer rim trailing edge point of each described outer leafs and the line of inner edge trailing edge point are projected as curve in described reference level.
9. fan blade according to claim 1, is characterized in that, the outer diameter D 2 of described outer wheel hub meets relation with the diameter D1 of described fan blade: D2≤0.5D1.
10. a fan, is characterized in that, comprises the fan blade according to any one of claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420854074.7U CN204371777U (en) | 2014-12-29 | 2014-12-29 | Fan blade and there is its fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420854074.7U CN204371777U (en) | 2014-12-29 | 2014-12-29 | Fan blade and there is its fan |
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| CN204371777U true CN204371777U (en) | 2015-06-03 |
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| CN201420854074.7U Active CN204371777U (en) | 2014-12-29 | 2014-12-29 | Fan blade and there is its fan |
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| CN106640758A (en) * | 2017-01-16 | 2017-05-10 | 广东美的制冷设备有限公司 | Wind wheel with double air ducts |
| CN106762828A (en) * | 2017-01-19 | 2017-05-31 | 梁耀文 | Fan leaf annular multistage blade structure |
| CN106930974A (en) * | 2016-01-27 | 2017-07-07 | 广东美的环境电器制造有限公司 | Wind wheel and household electrical appliance |
| CN107605798A (en) * | 2017-07-11 | 2018-01-19 | 杭州艾弗洛电器有限公司 | A kind of novel wind wheel structure |
| CN109185225A (en) * | 2018-11-26 | 2019-01-11 | 珠海格力电器股份有限公司 | Fan blade and fan |
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| CN106930974A (en) * | 2016-01-27 | 2017-07-07 | 广东美的环境电器制造有限公司 | Wind wheel and household electrical appliance |
| CN106930974B (en) * | 2016-01-27 | 2023-02-17 | 广东美的环境电器制造有限公司 | Wind wheel and household appliance |
| CN106640758A (en) * | 2017-01-16 | 2017-05-10 | 广东美的制冷设备有限公司 | Wind wheel with double air ducts |
| CN106640758B (en) * | 2017-01-16 | 2023-03-14 | 广东美的制冷设备有限公司 | Double-air-duct wind wheel |
| CN106762828A (en) * | 2017-01-19 | 2017-05-31 | 梁耀文 | Fan leaf annular multistage blade structure |
| CN107605798A (en) * | 2017-07-11 | 2018-01-19 | 杭州艾弗洛电器有限公司 | A kind of novel wind wheel structure |
| CN111043064A (en) * | 2018-10-15 | 2020-04-21 | 广东美的白色家电技术创新中心有限公司 | Counter-rotating fan |
| CN109185225A (en) * | 2018-11-26 | 2019-01-11 | 珠海格力电器股份有限公司 | Fan blade and fan |
| CN109185225B (en) * | 2018-11-26 | 2024-07-09 | 珠海格力电器股份有限公司 | Fan blade and fan |
| CN110545003A (en) * | 2019-09-27 | 2019-12-06 | 珠海格力电器股份有限公司 | Rotor shell structure, outer rotor motor and washing machine with same |
| CN110608192A (en) * | 2019-09-30 | 2019-12-24 | 珠海格力电器股份有限公司 | Fan and axial flow impeller |
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