CN203809351U - Fan and air conditioner outdoor unit - Google Patents
Fan and air conditioner outdoor unit Download PDFInfo
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- CN203809351U CN203809351U CN201420133093.0U CN201420133093U CN203809351U CN 203809351 U CN203809351 U CN 203809351U CN 201420133093 U CN201420133093 U CN 201420133093U CN 203809351 U CN203809351 U CN 203809351U
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- silver
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- blower fan
- blade
- safety cover
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Abstract
The utility model provides a fan and an air conditioner outdoor unit. In an air outlet protection cover of the fan, the distance S between threads of warp strip piece wing shape of two adjacent warp strip pieces in the same warp strip piece group, the length a of the threads of the warp strip piece wing shape and the included angle theta between the thread of a blade wing shape of each blade and the plane perpendicular to a rotating shaft meets the formula that a=S*tan(theta); the protection of the windward sides of the warp strip pieces on the plane perpendicular to the rotating shaft is a curved section on an Archimedes spiral; a tangent line on the air-outlet side of the curved section of the windward side of the warp strip piece wing shape is the axis parallel to the rotating shaft; the diameter D1 of an air wheel, the radial distance b between the air wheel and an air guide ring, the smallest distance m between the tail edge of each blade and the radial side of the air inlet side of the outermost ring of the air outlet protection cover and the diameter D2 of the radial side of the air inlet side of the outermost ring of the air outlet protection cover meets the formula that {(D1+2b+0.53*m)*(1-3%)}<=D2<={(D1+2b+0.53*m)*(1+3%)}. After the conditions are met, noise generated by the fan is reduced, the recycle effect is best when the dynamic pressure of rotating flow generated by the fan serves as static pressure, and the energy efficiency of the fan is improved.
Description
Technical field
The utility model relates to appliance field, more specifically, relates to a kind of blower fan and the air conditioner outdoor machine that comprises this blower fan.
Background technique
At present, the fan of use in air-conditioner outdoor unit is generally propeller fan, and propeller type fan disposes blade at the peripheral part of wheel hub, the lift air-supply that can utilize blade to turn round to produce.Now, with wheel hub blowing out side nearby compared with, the revolving spiral stream identical with fan gyratory directions that blows out the outer circumferential side generation of side at propeller type fan increases, this spiral flow as can not convert to fan shaft to mobile be axial flow, the dynamic pressure loss of energy, the aerodynamic performance of propeller type fan declines, simultaneously, spiral flow impacts on the safety protection grid of fan, the dynamic pressure loss of fluid is increased, and have noise to produce.For this reason, in prior art, there are following two kinds of solutions:
First method is: safety protection grill designs is become to have the safety protection grid that extends into radial;
Second method is: safety protection grill designs is become by being configured to the bar of concentric circles and extending into the radial cancellate safety protection grid forming.
In first method, owing to not being configured to the bar of concentric circles in safety protection grid, so, in order to prevent that foreign matter from entering in propeller type fan from outside, need to much extend into radial, very close by safety protection grill designs, still, very close due to safety protection grill designs, dynamic pressure loss and noise from the rotating flow of propeller type fan when by safety protection grid are all very large.
In the second approach, safety protection grid is by the bar of concentric circles and extends into radial the clathrate forming, but this cancellate the turning axle direction with respect to propeller type fan extended abreast towards downstream, so, can not make the directional steering of rotating flow towards turning axle, the problem that exists the dynamic pressure loss of energy, aerodynamic performance to decline.
Model utility content
The utility model is intended at least solve one of technical problem existing in prior art.
For this reason, the object of first aspect of the utility model is, a kind of blower fan that reduces dynamic pressure loss and noise is provided.
The object of second aspect of the utility model is, a kind of air conditioner outdoor machine with above-mentioned blower fan is provided.
For achieving the above object, the embodiment of first aspect of the utility model provides a kind of blower fan, comprising: fan main body, and described fan main body comprises motor and wind wheel, described wind wheel comprises blade and wheel hub, and described blade pass is crossed on the running shaft that described wheel hub is connected to described motor; With air-out safety cover; described air-out safety cover is positioned at the air side of described blower fan; described air-out safety cover comprises latitude circle ring and through silver group; described comprise through silver group multiple through silver; and multiple described through silver being radially radial and arranging along described latitude circle ring; described in silver group; described in adjacent two, be S through the distance through between the string of a musical instrument of silver aerofoil profile of silver; the length of the described string of a musical instrument through silver aerofoil profile is a; the string of a musical instrument of the vane airfoil profile of described blade is θ with the angle of the plane perpendicular to described running shaft, and a=S × tan θ.
In above-described embodiment of the present utility model, blower fan comprises fan main body and air-out safety cover, and air-out safety cover is positioned at the air side of blower fan, and air-out safety cover is form by latitude circle ring with through silver group grid-like, can prevent that outside object from entering in blower fan; Adjacent two through the distance S through between the string of a musical instrument of silver aerofoil profile of silver, meet this condition of a=S × tan θ through the length a of the string of a musical instrument of silver aerofoil profile, the string of a musical instrument and the angle theta of the plane perpendicular to running shaft of vane airfoil profile, like this, can destroy minimum and reclaim dynamic pressure at the moving air that blade rotary is produced, and the effect that the dynamic pressure of blower fan generation rotating flow is reclaimed as static pressure is best, improve the efficiency of blower fan.
In sum, the blower fan that the utility model above-described embodiment provides, air-out safety cover can prevent that outside object from entering in blower fan, can improve the efficiency of blower fan on the other hand on the one hand.
In addition, the blower fan providing according to the utility model above-described embodiment also has following additional technical feature:
According to an embodiment of the present utility model, described in each, through the windward side of silver, the projection in the plane of the running shaft perpendicular to described blower fan is the curved section on spiral of Archimedes.
According to an embodiment of the present utility model; described air-out safety cover comprises at least three described latitude circle rings and multiple described through silver group; the center of circle of at least three described latitude circle rings overlaps and radius difference; described in every adjacent two latitude circle interannular be provided with one described through silver group; the same described multiple described shape through silver, big or small identical, the different described described shape difference through silver in silver group in silver group.
According to an embodiment of the present utility model, the different described described windward side through the silver curved sections that projection obtains in the plane perpendicular to described running shaft in silver group are positioned on same spiral of Archimedes.
According to an embodiment of the present utility model, the starting point of described spiral of Archimedes overlaps with the center of circle of described latitude circle ring, and is positioned on the axis of described running shaft.
According to an embodiment of the present utility model, the described quantity prime number each other through the quantity of silver and the blade of described blower fan described in each in silver group.
According to an embodiment of the present utility model, described in each, be parallel to the axis of described running shaft through the tangent line of the air side of the windward side curved section of silver aerofoil profile.
According to an embodiment of the present utility model; described blower fan also comprises air-ducting ring; one end of described air-ducting ring is set in outside described wind wheel; the other end is connected with described air-out safety cover; and the axis of described air-ducting ring and the axis of described running shaft are located along the same line, between described air-ducting ring and described blade, there is gap.
According to an embodiment of the present utility model; the diameter of described wind wheel is D1; radial spacing between described wind wheel and described air-ducting ring is b; the minimum range of the sagittal plane of the outmost turns inlet side of the trailing edge of described blade and described air-out safety cover is m; the diameter of the sagittal plane of described air-out safety cover outmost turns inlet side is D2, and (D1+2b+0.53 × m) × (1-3%) }≤D2≤(D1+2b+0.53 × m) × (1+3%) }.
The embodiment of second aspect of the utility model provides a kind of air conditioner outdoor machine, comprises housing, on described housing, is provided with exhaust outlet; Heat exchanger, described heat exchanger is arranged in described housing; With the blower fan described in above-mentioned arbitrary embodiment; the fan main body of described blower fan is arranged in described housing, and is positioned at the front side of described heat exchanger, and the air side of described blower fan is just to described exhaust outlet; the air-out safety cover of described blower fan is fixed on described housing, and covers described exhaust outlet.
Additional aspect of the present utility model and advantage will become in description part below obviously, or recognize by practice of the present utility model.
Brief description of the drawings
Above-mentioned and/or additional aspect of the present utility model and advantage accompanying drawing below combination is understood becoming embodiment's description obviously and easily, wherein:
Fig. 1 is according to the structural representation of the blower fan described in the utility model one embodiment;
Fig. 2 is the structural representation of the air-out safety cover of blower fan shown in Fig. 1;
Fig. 3 is the schematic diagram of the curved section that projection obtains in the plane perpendicular to running shaft of the windward side through silver of the safety cover of air-out shown in Fig. 2;
Fig. 4 is the schematic diagram of the technique of painting of spiral of Archimedes;
Fig. 5 is the structural representation through silver aerofoil profile of the safety cover of air-out shown in Fig. 1.
Wherein, in Fig. 1 to Fig. 5, the corresponding relation between reference character and component names is:
1 air-out safety cover, 10 latitude circle rings, 11 through silver, and 110 through silver aerofoil profile,
The 111 windward side curved sections through silver aerofoil profile,
The tangent line of the air side of the 112 windward side curved sections through silver aerofoil profile,
113 strings of a musical instrument through silver aerofoil profile,
The curved section of 114 projections in the plane perpendicular to running shaft of the windward side through silver,
2 wind wheels, 3 air-ducting ring, 4 blower fans, 40 running shafts, the axis of 400 running shafts,
41 planes perpendicular to running shaft
Embodiment
In order more clearly to understand above-mentioned purpose of the present utility model, feature and advantage, below in conjunction with the drawings and specific embodiments, the utility model is further described in detail.It should be noted that, in the situation that not conflicting, the feature in the application's embodiment and embodiment can combine mutually.
A lot of details are set forth in the following description so that fully understand the utility model; but; the utility model can also adopt other to be different from mode described here and implement, and therefore, protection domain of the present utility model is not subject to the restriction of following public specific embodiment.
Describe with reference to the accompanying drawings according to some embodiments' of the utility model blower fan and air conditioner outdoor machine.
As depicted in figs. 1 and 2, a kind of blower fan providing according to some embodiments of the utility model, comprising: fan main body and air-out safety cover 1.
Wherein, as shown in Figure 1, described fan main body comprises motor 4 and wind wheel 2, and described wind wheel 2 comprises blade and wheel hub, and described blade pass is crossed on the running shaft 40 that described wheel hub is connected to described motor 4;
As depicted in figs. 1 and 2, described air-out safety cover 1 is positioned at the air side of described blower fan, and described air-out safety cover 1 comprises at least three latitude circle rings 10 and multiple through silver group, the center of circle of at least three described latitude circle rings 10 overlaps and radius difference, in the concrete example shown in Fig. 2, described air-out safety cover 1 comprises seven, and sheathed latitude circle ring 10 and six are through silver group successively, and the semidiameter of adjacent two latitude circle rings 10 equates;
As shown in Figure 2, each described include through silver group multiple through silver 11, described in every adjacent two 10, latitude circle ring be provided with one described through silver group, and described in each through silver group multiple described through silver 11 being radially radial and arranging along described latitude circle ring 10;
Described in each in silver group, the distance through 113, the string of a musical instrument of silver aerofoil profile through silver 1 described in adjacent two is S, the length of the described string of a musical instrument 113 through silver aerofoil profile be a(as shown in Figure 5), the string of a musical instrument of the vane airfoil profile of described blade is θ with the angle of the plane 41 perpendicular to described running shaft 40, and a=S × tan θ.
As shown in Figure 5, the axis plane projection of the cross section through silver that the rotational circle cylinder centered by the axis 400 of running shaft 40 intercepts is called through silver aerofoil profile 110, be the string of a musical instrument 113 through silver aerofoil profile through the round mid point line of leading of silver aerofoil profile 110 two, with in silver group, adjacent two interval S through 113, the string of a musical instrument of silver aerofoil profile are along with changing from the variation of the radial distance in the center of circle of latitude circle ring through silver aerofoil profile, in example shown in Fig. 3, adjacent two minimum ranges through between the string of a musical instrument of silver aerofoil profile that intercepted by the rotational circle cylinder centered by the axis taking running shaft through silver 11 are S
1, ultimate range is S
2, apart from the scope of S be: [S
1, S
2], in formula a=S × tan θ, S is the distance through between the string of a musical instrument of silver aerofoil profile being intercepted by a certain rotational circle cylinder centered by the axis of running shaft, a is the length through the string of a musical instrument of silver aerofoil profile now.
In above-described embodiment of the present utility model, blower fan comprises fan main body and air-out safety cover, and air-out safety cover is positioned at the air side of blower fan, and air-out safety cover is by multiple latitude circle rings and multiple form through silver group grid-like, can prevent that outside object from entering in blower fan; Adjacent two through the distance S through between the string of a musical instrument of silver aerofoil profile of silver, meet this condition of a=S × tan θ through the string of a musical instrument of the vane airfoil profile of the length a of the string of a musical instrument of silver aerofoil profile, blade with the angle theta of the plane perpendicular to running shaft, like this, can destroy minimum and reclaim dynamic pressure at the moving air that blade rotary is produced, simultaneously, the dynamic pressure that blower fan is produced to rotating flow is best as the effect of static pressure recovery, has improved the efficiency of blower fan.
In sum, the blower fan that the utility model above-described embodiment provides, air-out safety cover can prevent that outside object from entering in blower fan, can improve the efficiency of blower fan on the other hand on the one hand.
In a preferred embodiment of the present utility model, as shown in Figure 3, described in each, through the windward side of silver, the curved section 114 of the projection in the plane of the running shaft perpendicular to described blower fan is the curved section on spiral of Archimedes.
In above-described embodiment of the present utility model, through the windward side of silver in the plane of the running shaft perpendicular to blower fan, be projected as the curved section on spiral of Archimedes (being constant speed helix), when the blade rotary of blower fan, can produce vertically, radially with circumferential three air that direction is mobile, through the windward side of silver in the plane perpendicular to running shaft be projected as the curved section on spiral of Archimedes time, can reduce mobile air runs into the turbulent flow producing in the time of silver on the one hand, reduce noise, and can reduce the loss of dynamic pressure, the dynamic pressure that is simultaneously conducive to the blower fan to produce rotating flow (along circumferential flow) is reclaimed as static pressure.
Preferably, as shown in Figure 2, the same described multiple described shape through silver 11, size in silver group is identical.
With the multiple shapes through silver in silver group, big or small identical, be convenient to the batch production through silver on the one hand, reduce cost of production, be convenient on the other hand with the installation through silver in silver group.
In an embodiment of the present utility model, as shown in Figure 2, the different described described shape differences through silver 11 in silver group.
Particularly, the different described described windward side through silver 11 curved sections that projection obtains in the plane perpendicular to described running shaft 114 in silver group are positioned on same spiral of Archimedes.
In the utility model embodiment, provide each in silver group through silver, all the curved sections that intercept on same spiral of Archimedes, identical with the position intercepting through silver in silver group, make with the shape through silver in silver group identical, the different position differences that intercept through silver in silver group, make the different shape differences through silver in silver group, after intercepting, in silver group through silver centered by the center of circle of latitude circle ring, arrange by the mode of circumference array (being rotated in the process through silver at circumference array).
As shown in Figure 3, the axis taking Z axis as running shaft, the cartesian coordinate system equation of the spiral of Archimedes at curved section 114 places that obtain in the upper projection of plane (being XY plane) of vertical rotating shaft axis through silver is:
Wherein, r represents utmost point footpath; θ represents the aerofoil profile string of a musical instrument of blade and angle perpendicular to the plane (being the XY plane in Fig. 3) of running shaft; λ represents the polar angle of spiral of Archimedes, 0≤λ≤θ, and in order to control shape and the length of spiral of Archimedes, when λ=0, r=0, as λ=θ, r=D
3; φ represents the angle of rotating in the process at circumference array through silver, and 0≤φ≤2 π, in order to control the angle of curved section 114 rotation array that obtain through silver projection.
More difficult owing to accurately spiral of Archimedes being drawn, in Practical Project, be all to utilize Approximate to remove to approach spiral of Archimedes, a kind of technique of painting of spiral of Archimedes of close approximation is provided as follows, as shown in Figure 4,
(1) first O is the center of circle, draws circle (not shown) taking helical pitch L as radius, then circumference and radius are divided into identical n decile, n=8 in figure;
(2) taking O as the center of circle, make each isocentric circular arc and intersect in the radius of respective digital, obtain intersection point 1 ', 2 ', 3 ' ... 8 ' each point, is the point of spiral of Archimedes;
(3) be smoothly connected successively each point, obtain spiral of Archimedes, be i.e. the represented curve of solid line in figure.
In a specific embodiment of the present utility model, the starting point of described spiral of Archimedes (being the center of circle O in Fig. 4) overlaps with the center of circle of described latitude circle ring.
Further, the center of circle of described latitude circle ring is positioned on the axis 400 of described running shaft 40.
The starting point of spiral of Archimedes overlaps with the center of circle of latitude circle ring, the center of circle of latitude circle ring is positioned on the axis of running shaft, it is the starting point of spiral of Archimedes, the center of circle of latitude circle ring is all positioned on the axis of blower fan running shaft, the mobile air that the blade rotary of blower fan produces is in the time running into through silver, can produce turbulent flow, and in the time that the starting point on the spiral of Archimedes at the curved section place that projection obtains in the plane perpendicular to running shaft, the windward side through silver is positioned on the axis of running shaft, can reduce turbulence scale, reduce the dynamic pressure loss of moving air, reduce the noise that air impact produces in the time of silver simultaneously.
In an embodiment of the present utility model, as shown in Figure 2, the different described described quantity differences through silver 11 in silver group, the quantity through silver 11 in silver group the closer to latitude circle ring 1 edge is more, to ensure that adjacent two is unlikely excessive through the gap of 11 of silvers, otherwise can not play the effect that prevents that outside object from entering blower fan inside.
In a preferred embodiment of the present utility model, the described quantity prime number each other through the quantity of silver 11 and the blade of described blower fan described in each in silver group.
In the concrete example shown in Fig. 2, the quantity of blade is 3, from inside to outside, six are respectively 35,50,62,73,76,76 through the quantity of silver in silver group, and 35,50,62,73 and 76 all with 3 prime numbers (35,50,62,73 and 76 and 3 do not have common divisor) each other.
Because blade is cut while hitting air and can be produced noise; what outer machine went out that stream flows through air-out safety cover also can produce noise in the time of silver; these two noises can interfere, and in the time that the quantity through the quantity of silver and the blade of blower fan in silver group is relatively prime, can weaken interaction noise.
In of the present utility model one preferred example, as shown in Figure 5, described in each, be parallel to the axis 400 of described running shaft 40 through the tangent line 112 of the air side of the windward side curved section 111 of silver aerofoil profile.
In the time that the tangent line of the air side of the windward side curved section of silver aerofoil profile is parallel to the axis of running shaft, fan blade rotates the rotating flow producing and runs into behind the windward side of silver, flow along the windward side through silver, because of the tangent line of air side and the axis of running shaft of the windward side curved section through silver aerofoil profile parallel, so rotating flow axial direction along running shaft from the air side of windward side is left moves, realize rotating flow has been converted to axial flow, improved the axial-feeding-air effect of blower fan.
In a specific embodiment of the present utility model; as shown in Figure 1; described blower fan also comprises air-ducting ring 3; one end of described air-ducting ring 3 is set in outside described wind wheel 2; the other end is connected with described air-out safety cover 1; and the axis 400 of the axis of described air-ducting ring 3 and described running shaft 40 is located along the same line, between described air-ducting ring 3 and described blade, there is gap.
Further; as shown in Figure 1; the diameter of described wind wheel 2 is D1; radial spacing between described wind wheel 2 and described air-ducting ring 3 is b; the minimum range of the sagittal plane of the trailing edge of described blade and described air-out safety cover 1 outmost turns inlet side is m; the diameter of the sagittal plane of described air-out safety cover 1 outmost turns inlet side is D2, and (D1+2b+0.53 × m) × (1-3%) }≤D2≤(D1+2b+0.53 × m) × (1+3%) }.
In above-described embodiment of the present utility model, the diameter (being the circumscribed circle diameter of the maximum outer rim of impeller) of wind wheel is D1, radial spacing (being the monolateral radial distance between blade outer rim and air-ducting ring internal face) between wind wheel and air-ducting ring is b, blade trailing edge (being the edge being oppositely arranged with blade inlet edge (edge of blade windward side) on blade) is m with the minimum range of the sagittal plane of air-out safety cover outmost turns inlet side, the calculated diameter of the diameter D2 of the sagittal plane of air-out safety cover outmost turns inlet side is: D2 '=D1+2b+0.53 × m, consider blower fan air-ducting ring lead arc, the machining error that mould etc. exist, and the reason such as the assembly error of blower fan, the diameter of the sagittal plane of air-out safety cover outmost turns inlet side need be adjusted in 3% margin of error, therefore, the final span of the diameter of the sagittal plane of air-out safety cover outmost turns inlet side is: D2 ' × (1-3%)≤D2≤D2 ' × (1+3%), (D1+2b+0.53 × m) × (1-3%)≤D2≤(D1+2b+0.53 × m) × (1+3%).In the time that blower fan meets above-mentioned relation formula, improve blower fan and produced the dynamic pressure of rotating flow as the effect of static pressure recovery, and then improved the efficiency of blower fan.
The embodiment of the utility model second aspect provides a kind of air conditioner outdoor machine (not shown), comprises the blower fan described in housing (not shown), heat exchanger (not shown) and above-mentioned arbitrary embodiment.
Wherein, on described housing, be provided with exhaust outlet (not shown);
Described heat exchanger is arranged in described housing;
The fan main body of described blower fan is arranged in described housing, and is positioned at the front side of described heat exchanger, and the air side of described blower fan is just to described exhaust outlet, and the air-out safety cover of described blower fan is fixed on described housing, and covers described exhaust outlet.
The air conditioner outdoor machine that the utility model above-described embodiment provides, comprises the blower fan described in above-mentioned arbitrary embodiment, and has whole beneficial effects of blower fan described in above-mentioned arbitrary embodiment, therefore, when the air conditioner outdoor machine that the utility model embodiment provides is worked, the noise of fan is little, and efficiency is high.
In sum, the blower fan that the utility model provides, has following feature: 1, adjacent two through the distance S through between the silver aerofoil profile string of a musical instrument of silver, meet a=S × tan θ through the string of a musical instrument of the vane airfoil profile of the length a of the string of a musical instrument of silver aerofoil profile, blade with the angle theta of the plane perpendicular to running shaft; 2, in the plane at vertical rotating shaft, be projected as the curved section on spiral of Archimedes through the windward side of silver; 3, be parallel to the axis of running shaft through the tangent line of the air side of the windward side curved section of silver aerofoil profile; 4, every in silver group through the quantity of silver and the blade quantity of blower fan prime number each other; 5, the diameter D1 of wind wheel, wind wheel to the minimum range m of monolateral radial spacing b, blade trailing edge and air-out safety cover outmost turns inlet side sagittal plane of air-ducting ring and the diameter D2 of air-out safety cover outmost turns inlet side sagittal plane satisfied (D1+2b+0.53 × m) × (1-3%) }≤D2≤{ (D1+2b+0.53 × m) × (1+3%); 6, the starting point of spiral of Archimedes overlaps with the center of circle of latitude circle ring, and be positioned on the axis of running shaft, meet after above six conditions, the reducing noise that blower fan produces, can in the situation that destroying gas flow minimum, reclaim dynamic pressure simultaneously, and the dynamic pressure of blower fan generation rotating flow is best as static pressure recovering effect, improve the efficiency of blower fan.
In description of the present utility model, term " multiple " refers to two or more; Term " connection ", " being connected ", " fixing " etc. all should be interpreted broadly, and for example, " connection " can be to be fixedly connected with, and can be also to removably connect, or connect integratedly; Can be to be directly connected, also can indirectly be connected by intermediary.For the ordinary skill in the art, can understand as the case may be the concrete meaning of above-mentioned term in the utility model.
In the description of this specification, the description of term " embodiment ", " some embodiments ", " specific embodiment " etc. means to be contained at least one embodiment of the present utility model or example in conjunction with specific features, structure, material or the feature of this embodiment or example description.In this manual, the schematic statement of above-mentioned term is not necessarily referred to identical embodiment or example.And specific features, structure, material or the feature of description can be with suitable mode combination in any one or more embodiments or example.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (10)
1. a blower fan, is characterized in that, comprising:
Fan main body, described fan main body comprises motor and wind wheel, and described wind wheel comprises blade and wheel hub, and described blade pass is crossed on the running shaft that described wheel hub is connected to described motor; With
Air-out safety cover; described air-out safety cover is positioned at the air side of described blower fan; described air-out safety cover comprises latitude circle ring and through silver group; described comprise through silver group multiple through silver; and multiple described through silver being radially radial and arranging along described latitude circle ring; described in silver group; described in adjacent two, be S through the distance through between the string of a musical instrument of silver aerofoil profile of silver; the length of the described string of a musical instrument through silver aerofoil profile is a; the string of a musical instrument of the vane airfoil profile of described blade is θ with the angle of the plane perpendicular to described running shaft, and a=S × tan θ.
2. blower fan according to claim 1, is characterized in that,
Described in each, through the windward side of silver, the projection in the plane perpendicular to described running shaft is the curved section on spiral of Archimedes.
3. blower fan according to claim 2, is characterized in that,
Described air-out safety cover comprises at least three described latitude circle rings and multiple described through silver group; the center of circle of at least three described latitude circle rings overlaps and radius difference; described in every adjacent two latitude circle interannular be provided with one described in through silver group; the same described multiple described shape through silver, big or small identical, the different described described shape difference through silver in silver group in silver group.
4. blower fan according to claim 3, is characterized in that,
The different described described windward side through the silver curved sections that projection obtains in the plane perpendicular to described running shaft in silver group are positioned on same spiral of Archimedes.
5. blower fan according to claim 4, is characterized in that,
The starting point of described spiral of Archimedes overlaps with the center of circle of described latitude circle ring, and is positioned on the axis of described running shaft.
6. blower fan according to claim 1, is characterized in that,
The described described quantity prime number each other through the quantity of silver and the blade of described blower fan in silver group.
7. blower fan according to claim 1, is characterized in that,
Described in each, be parallel to the axis of described running shaft through the tangent line of the air side of the windward side curved section of silver aerofoil profile.
8. according to the blower fan described in any one in claim 1 to 7, it is characterized in that, also comprise:
Air-ducting ring, one end of described air-ducting ring is set in outside described wind wheel, and the other end is connected with described air-out safety cover, and the axis of described air-ducting ring and the axis of described running shaft be located along the same line, and between described air-ducting ring and described blade, has gap.
9. blower fan according to claim 8, is characterized in that,
The diameter of described wind wheel is D1; radial spacing between described wind wheel and described air-ducting ring is b; the minimum range of the sagittal plane of the outmost turns inlet side of the trailing edge of described blade and described air-out safety cover is m; the diameter of the sagittal plane of described air-out safety cover outmost turns inlet side is D2, and (D1+2b+0.53 × m) × (1-3%) }≤D2≤(D1+2b+0.53 × m) × (1+3%) }.
10. an air conditioner outdoor machine, is characterized in that, comprising:
Housing, is provided with exhaust outlet on described housing;
Heat exchanger, described heat exchanger is arranged in described housing; With
Blower fan as claimed in any one of claims 1-9 wherein; the fan main body of described blower fan is arranged in described housing; and be positioned at the front side of described heat exchanger; and the air side of described blower fan is just to described exhaust outlet; the air-out safety cover of described blower fan is fixed on described housing, and covers described exhaust outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420133093.0U CN203809351U (en) | 2014-03-21 | 2014-03-21 | Fan and air conditioner outdoor unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420133093.0U CN203809351U (en) | 2014-03-21 | 2014-03-21 | Fan and air conditioner outdoor unit |
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| CN203809351U true CN203809351U (en) | 2014-09-03 |
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ID=51448108
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420133093.0U Withdrawn - After Issue CN203809351U (en) | 2014-03-21 | 2014-03-21 | Fan and air conditioner outdoor unit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103899576A (en) * | 2014-03-21 | 2014-07-02 | 美的集团股份有限公司 | Fan and air conditioner outdoor machine |
| CN113202573A (en) * | 2021-04-02 | 2021-08-03 | 常州马克西姆电气有限公司 | Power generation energy storage device based on compressed air |
-
2014
- 2014-03-21 CN CN201420133093.0U patent/CN203809351U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103899576A (en) * | 2014-03-21 | 2014-07-02 | 美的集团股份有限公司 | Fan and air conditioner outdoor machine |
| CN103899576B (en) * | 2014-03-21 | 2017-05-24 | 美的集团股份有限公司 | fan and air conditioner outdoor machine |
| CN113202573A (en) * | 2021-04-02 | 2021-08-03 | 常州马克西姆电气有限公司 | Power generation energy storage device based on compressed air |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140903 Effective date of abandoning: 20170524 |
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| AV01 | Patent right actively abandoned |