CN103900167A - Air outlet protection hood of fan, fan and air conditioner outdoor machine - Google Patents
Air outlet protection hood of fan, fan and air conditioner outdoor machine Download PDFInfo
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- CN103900167A CN103900167A CN201410109976.2A CN201410109976A CN103900167A CN 103900167 A CN103900167 A CN 103900167A CN 201410109976 A CN201410109976 A CN 201410109976A CN 103900167 A CN103900167 A CN 103900167A
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Abstract
The invention provides an air outlet protection hood of a fan, the fan and an air conditioner outdoor machine. The air outlet protection hood of the fan comprises multiple strip sheet assemblies. The number of strip sheets in the strip sheet assemblies and the number of blades are prime numbers. Projection of the windward faces of the strip sheets on the plane perpendicular to a rotation shaft is a curved segment of an Archimedes helical line. The tangential lines of the air outlet sides of the wing-shaped windward side curved segments of the strip sheets are parallel to the axis of the rotation shaft. The diameter D1 of a wind wheel, a radial distance b between the wind wheel and a wind guide ring, the minimum distance m between the tail rim of each blade and the radial face of the air inlet side of the outmost ring of the air outlet protection hood and the diameter D2 of the radial face of the air inlet side of the outmost ring of the air outlet protection hood meets the requirement that (D1+2b+0.53*m)* (1-3%) is equal to but smaller than D2 and D2 is equal to or smaller than (D1+2b+0.53*m)*(1+3%). The starting point of the Archimedes helical line coincides with the center of a parallel circle ring. After the conditions are met, noise generated by the fan is lowered, the dynamic pressure of rotation flow generated by the fan can achieve the best recycling effect as static pressure and the energy efficiency of the fan is improved.
Description
Technical field
The present invention relates to appliance field, more specifically, relate to a kind of blower fan air-out protective cover, comprise the blower fan of this air-out protective cover and comprise the air-conditioner outdoor unit of this blower fan.
Background technology
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 security 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: security protection grill designs is become to have the safeguard protection grid that extends into radial;
Second method is: security protection grill designs is become by being configured to the bar of concentric circles and extending into the radial cancellate safeguard protection grid forming.
In first method, owing to not being configured to the bar of concentric circles in security 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 security protection grill designs, still, very close due to security protection grill designs, dynamic pressure loss and noise from the rotating flow of propeller type fan when by security protection grid are all very large.
In the second approach, security protection grid is by the bar of concentric circles and extends into radial the clathrate forming, but this cancellate the gyroaxis direction with respect to propeller type fan extended abreast towards downstream, so, can not make the directional steering of rotating flow towards gyroaxis, the problem that exists the dynamic pressure loss of energy, aerodynamic performance to decline.
Summary of the invention
The present invention is intended at least solve one of technical problem existing in prior art.
For this reason, the object of first aspect of the present invention is, a kind of air-out protective cover of the blower fan that reduces blower fan dynamic pressure loss and noise is provided.
The object of second aspect of the present invention is, a kind of blower fan with above-mentioned blower fan protective cover is provided.
The object of third aspect of the present invention is, a kind of air-conditioner outdoor unit with above-mentioned blower fan is provided.
For achieving the above object; the embodiment of first aspect of the present invention provides a kind of air-out protective cover of blower fan; comprise latitude circle ring and radially arrange along described latitude circle ring through silver, the described windward side through silver is projected as the curved section on spiral of Archimedes in the plane of the rotating shaft perpendicular to described blower fan.
In the above embodiment of the present invention, through the windward side of silver in the plane of the rotating 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 rotating 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.
In sum; the air-out protective cover that the embodiment of the present invention provides; by being set, windward side through silver is projected as the curved section on spiral of Archimedes in the plane perpendicular to blower fan rotating shaft; reducing mobile air runs into the turbulent flow producing in the time of silver on the one hand; reduce noise; and when can reducing the loss of dynamic pressure, the effect that the dynamic pressure that makes blower fan produce rotating flow (along circumferential flowing) is reclaimed as static pressure is best, has improved the efficiency of blower fan.
The air-out protective cover of the blower fan providing according to the above embodiment of the present invention in addition, also has following additional technical feature:
According to one embodiment of present invention, described air-out protective cover comprises at least three described latitude circle rings and multiple through silver group, the center of circle of at least three described latitude circle rings overlaps and radius difference, each described include through silver group multiple described through silver, described in every adjacent two latitude circle interannular be provided with one described in through silver group, and described in each through silver group multiple described through silver being radially radial and arranging along described latitude circle ring, the same described multiple described shape through silver in silver group, size is identical, the different described described shape differences through silver in silver group.
According to one embodiment of present invention, the described described windward side through the silver curved section that projection obtains in the plane perpendicular to described rotating shaft in silver group of difference is positioned on same spiral of Archimedes.
According to one embodiment of present invention, 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 rotating shaft.
According to one embodiment of present invention, described in each, be parallel to the axis of described rotating shaft through the tangent line of the air side of the windward side curved section through silver aerofoil profile of silver.
According to one embodiment of present invention, the described quantity prime number each other through the quantity of silver and the blade of described blower fan in silver group described in each.
The embodiment of second aspect of the present invention provides a kind of blower fan, comprising: fan main body, and 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 rotating shaft that described wheel hub is connected to described motor; With the air-out protective cover described in above-mentioned arbitrary embodiment, described air-out protective cover is positioned at the air side of described blower fan.
According to one embodiment of present invention; described air-out protective cover 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 protective cover; and the axis of described air-ducting ring and the axis of described rotating shaft are located along the same line, between described air-ducting ring and described blade, there is gap.
According to one embodiment of present invention; 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 trailing edge of described blade and described air-out protective cover outmost turns inlet side is m; the diameter of the sagittal plane of described air-out protective 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 third aspect of the present invention provides a kind of air-conditioner, comprising: housing, is provided with air outlet on described housing; 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 air outlet; the air-out protective cover of described blower fan is fixed on described housing, and covers described air outlet.
Additional aspect of the present invention and advantage will become in description part below obviously, or recognize by practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present invention and advantage accompanying drawing below combination is understood becoming the description of embodiment obviously and easily, wherein:
Fig. 1 is according to the structural representation of the air-out protective cover described in one embodiment of the invention;
Fig. 2 is the schematic diagram of the curved section that projection obtains in the plane perpendicular to rotating shaft of the windward side through silver of the protective cover of air-out shown in Fig. 1;
Fig. 3 is the schematic diagram of the technique of painting of spiral of Archimedes;
Fig. 4 is the structural representation through silver aerofoil profile of the protective cover of air-out shown in Fig. 1;
Fig. 5 is according to the structural representation of the blower fan described in one embodiment of the invention.
Wherein, in Fig. 1 to Fig. 5, the corresponding relation between Reference numeral and component names is:
1 air-out protective 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 rotating shaft of the windward side through silver,
2 wind wheels, 3 air-ducting ring, 4 motors, 40 rotating shafts, the axis of 400 rotating shafts,
41 planes perpendicular to rotating shaft
The specific embodiment
In order more clearly to understand above-mentioned purpose of the present invention, feature and advantage, below in conjunction with the drawings and specific embodiments, the present invention 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 present invention; but; the present invention can also adopt other to be different from mode described here and implement, and therefore, protection scope of the present invention is not subject to the restriction of following public specific embodiment.
Air-out protective cover, blower fan and the air-conditioner outdoor unit of blower fan are according to some embodiments of the invention described with reference to the accompanying drawings.
As depicted in figs. 1 and 2, the air-out protective cover 1 of a kind of blower fan providing according to some embodiments of the invention, comprises at least three latitude circle rings 10 and multiple through silver group.
Wherein, the center of circle of at least three described latitude circle rings 10 overlaps and radius difference, and in the concrete example shown in Fig. 1, described air-out protective 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 1, 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; As shown in Figure 2, the curved section 114 of the projection of the described windward side through silver 11 in the plane of the rotating shaft perpendicular to described blower fan is the curved section on spiral of Archimedes.
In the above embodiment of the present invention, through the windward side of silver in the plane of the rotating 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 rotating 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.
In sum; the air-out protective cover that the embodiment of the present invention provides; by being set, windward side through silver is projected as the curved section on spiral of Archimedes in the plane perpendicular to blower fan rotating shaft; reducing mobile air runs into the turbulent flow producing in the time of silver on the one hand; reduce noise; and when can reducing the loss of dynamic pressure, the effect that the dynamic pressure that makes blower fan produce rotating flow (along circumferential flowing) is reclaimed as static pressure is best, has improved the efficiency of blower fan.
Preferably, as shown in Figure 1, 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 production cost, be convenient on the other hand with the installation through silver in silver group.
In one embodiment of this invention, as shown in Figure 1, 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 rotating shaft 114 in silver group are positioned on same spiral of Archimedes.
In the embodiment of the present invention, 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 2, the axis take Z axis as rotating 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 represent the aerofoil profile string of a musical instrument of blade be the XY plane in Fig. 2 perpendicular to the plane 41(of rotating shaft 40) angle; 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 3:
(1) first O is the center of circle, draws circle (not shown) take helical pitch S as radius, then circumference and radius are divided into identical n decile, n=8 in figure;
(2) take 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 invention, the starting point of described spiral of Archimedes (being the center of circle O in Fig. 3) 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 rotating 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 rotating 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 rotating 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 rotating shaft, the windward side through silver is positioned on the axis of rotating shaft, can reduce turbulence level, reduce the dynamic pressure loss of moving air, reduce the noise that air impact produces in the time of silver simultaneously.
In one embodiment of this invention, as shown in Figure 1, 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 guarantee 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 invention, 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. 1, 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 protective 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 invention one preferred example, as shown in Figure 4, described in each, be parallel to the axis 400 of described rotating shaft 40 through the tangent line 112 of the air side of the windward side curved section 111 through silver aerofoil profile of silver.
The axis plane projection of the cross section through silver that the rotational circle cylinder centered by the axis 400 of rotating 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, 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 rotating 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 rotating shaft of the windward side curved section through silver aerofoil profile parallel, so rotating flow axis direction along rotating shaft from the air side of windward side is left moves, realize rotating flow has been converted to axial flow, improve the axial-feeding-air effect of blower fan.
The embodiment of second aspect present invention provides a kind of blower fan, as shown in Figure 5, comprises fan main body and air-out protective cover 1.
Particularly, 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 rotating shaft 40 that described wheel hub is connected to described motor 4;
Described air-out protective cover 1 is the air-out protective cover of the blower fan described in above-mentioned arbitrary embodiment, and described air-out protective cover 1 is positioned at the air side of described blower fan.
The blower fan that the above embodiment of the present invention provides; comprise the air-out protective cover described in fan main body and above-mentioned arbitrary embodiment; and air-out protective cover is positioned at the air side of blower fan; the setting of air-out protective cover; can prevent that outside object from entering in blower fan on the one hand; can reduce on the other hand the noise that blower fan produces, improve the efficiency of blower fan.
In a specific embodiment of the present invention; as shown in Figure 5; 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 protective cover 1; and the axis 400 of the axis of described air-ducting ring 3 and described rotating 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 5; 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 protective cover 1 outmost turns inlet side is m; the diameter of the sagittal plane of described air-out protective 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 the above embodiment of the present invention, 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 protective cover outmost turns inlet side, the calculated diameter of the diameter D2 of the sagittal plane of air-out protective cover outmost turns inlet side is: D2 '=D1+2b+0.53 × m, consider blower fan air-ducting ring lead arc, the mismachining tolerance that mould etc. exist, and the reason such as the rigging error of blower fan, the diameter of the sagittal plane of air-out protective cover outmost turns inlet side need be adjusted in 3% error range, therefore, the final span of the diameter of the sagittal plane of air-out protective 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 third aspect present invention provides a kind of air-conditioner outdoor unit (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 air 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 air outlet, and the air-out protective cover of described blower fan is fixed on described housing, and covers described air outlet.
The air-conditioner outdoor unit that the above embodiment of the present invention 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 unit that the embodiment of the present invention provides is worked, the noise of fan is little, and efficiency is high.
In sum, blower fan provided by the invention, has following feature: 1, every relatively prime through the quantity of silver and the blade quantity of blower fan in silver group; 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 rotating shaft through the tangent line of the air side of the windward side curved section of silver aerofoil profile; 4, the diameter D1 of wind wheel, wind wheel to the minimum range m of monolateral radial spacing b, blade trailing edge and air-out protective cover outmost turns inlet side sagittal plane of air-ducting ring and the diameter D2 of air-out protective cover outmost turns inlet side sagittal plane satisfied (D1+2b+0.53 × m) × (1-3%) }≤D2≤{ (D1+2b+0.53 × m) × (1+3%) }; 5, the starting point of spiral of Archimedes overlaps with the center of circle of latitude circle ring, and be positioned on the axis of rotating shaft, meet after above five 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 invention, 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 above-mentioned term concrete meaning in the present invention.
In the description of this description, the description of term " embodiment ", " some embodiment ", " specific embodiment " etc. means to be contained at least one embodiment of the present invention 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 embodiment or example.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. an air-out protective cover for blower fan, is characterized in that, comprising:
Latitude circle ring; With
Radially arrange along described latitude circle ring through silver, the described windward side through silver is projected as the curved section on spiral of Archimedes in the plane of the rotating shaft perpendicular to described blower fan.
2. the air-out protective cover of blower fan according to claim 1, is characterized in that,
Described air-out protective cover comprises at least three described latitude circle rings and multiple through silver group; the center of circle of at least three described latitude circle rings overlaps and radius difference; each described include through silver group multiple described through silver; described in every adjacent two latitude circle interannular be provided with one described in through silver group; and described in each through silver group multiple described through silver being radially radial and arranging along described latitude circle ring; the same described multiple described shape through silver, size in silver group is identical, the different described described shape differences through silver in silver group.
3. the air-out protective cover of blower fan according to claim 2, is characterized in that,
The different described described windward side through the silver curved sections that projection obtains in the plane perpendicular to described rotating shaft in silver group are positioned on same spiral of Archimedes.
4. the air-out protective cover of blower fan according to claim 3, 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 rotating shaft.
5. according to the air-out protective cover of the blower fan described in any one in claim 1 to 4, it is characterized in that,
Described in each, be parallel to the axis of described rotating shaft through the tangent line of the air side of the windward side curved section through silver aerofoil profile of silver.
6. according to the air-out protective cover of the blower fan described in any one in claim 2 to 4, it is characterized in that,
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.
7. 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 rotating shaft that described wheel hub is connected to described motor; With
Air-out protective cover, the air-out protective cover that described air-out protective cover is the blower fan described in any one in right 1 to 6, described air-out protective cover is positioned at the air side of described blower fan.
8. blower fan according to claim 7, is characterized in that, also comprises:
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 protective cover, and the axis of described air-ducting ring and the axis of described rotating 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 trailing edge of described blade and described air-out protective cover outmost turns inlet side is m; the diameter of the sagittal plane of described air-out protective 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 unit, is characterized in that, comprising:
Housing, is provided with air outlet on described housing;
Heat exchanger, described heat exchanger is arranged in described housing; With
Blower fan as described in any one in claim 7 to 9; 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 air outlet; the air-out protective cover of described blower fan is fixed on described housing, and covers described air outlet.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410109976.2A CN103900167B (en) | 2014-03-21 | 2014-03-21 | The air-out protective cover of blower fan, blower fan and air-conditioner outdoor unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410109976.2A CN103900167B (en) | 2014-03-21 | 2014-03-21 | The air-out protective cover of blower fan, blower fan and air-conditioner outdoor unit |
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| CN103900167A true CN103900167A (en) | 2014-07-02 |
| CN103900167B CN103900167B (en) | 2017-06-06 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112136005A (en) * | 2018-05-22 | 2020-12-25 | 三菱电机株式会社 | Air blower and air conditioner |
| CN114688717A (en) * | 2020-12-30 | 2022-07-01 | 广东美的白色家电技术创新中心有限公司 | Wind-guiding structure, fan structure and air conditioner |
| CN114722745A (en) * | 2022-06-10 | 2022-07-08 | 中国空气动力研究与发展中心计算空气动力研究所 | Turbulent flow wall surface distance calculation method and device, computer equipment and storage medium |
| CN115264719A (en) * | 2021-04-29 | 2022-11-01 | 广东美的环境电器制造有限公司 | Air treatment equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112136005A (en) * | 2018-05-22 | 2020-12-25 | 三菱电机株式会社 | Air blower and air conditioner |
| CN114688717A (en) * | 2020-12-30 | 2022-07-01 | 广东美的白色家电技术创新中心有限公司 | Wind-guiding structure, fan structure and air conditioner |
| CN114688717B (en) * | 2020-12-30 | 2023-09-05 | 广东美的白色家电技术创新中心有限公司 | Air guide structure, fan structure and air conditioner |
| CN115264719A (en) * | 2021-04-29 | 2022-11-01 | 广东美的环境电器制造有限公司 | Air treatment equipment |
| CN115264719B (en) * | 2021-04-29 | 2024-04-12 | 广东美的环境电器制造有限公司 | Air treatment device |
| CN114722745A (en) * | 2022-06-10 | 2022-07-08 | 中国空气动力研究与发展中心计算空气动力研究所 | Turbulent flow wall surface distance calculation method and device, computer equipment and storage medium |
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| CN103900167B (en) | 2017-06-06 |
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