CN103899576B - fan and air conditioner outdoor machine - Google Patents
fan and air conditioner outdoor machine Download PDFInfo
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- CN103899576B CN103899576B CN201410109964.XA CN201410109964A CN103899576B CN 103899576 B CN103899576 B CN 103899576B CN 201410109964 A CN201410109964 A CN 201410109964A CN 103899576 B CN103899576 B CN 103899576B
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Abstract
The invention provides a fan and an air conditioner outdoor machine. In an air outlet protection hood of the fan, the distance S between strip sheet wing-shaped chord lines of two adjacent strip sheets in the same strip sheet assembly, the lengths a of the strip sheet wing-shaped chord lines and the included angle theta between blade wing-shaped cord lines of blades and the plane which is perpendicular to a rotation shaft meet the requirement of the formula a=S*tan theta. The number of strip sheets in the strip sheet assembly and the number of blades are prime numbers. Projection of the windward faces of the strip sheets on the plane perpendicular to the rotation shaft is a curved segment of an Archimedes helical line. Tangential lines of air outlet sides of the curved segment of the windward sides of the strip sheets are parallel to the axis of the rotation shaft. The diameter D1 of a wind wheel, the radial distance b between the wheel wind and an air guide ring, the minimum distance m between the rail rim of each blade and a 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 meet the requirement that (D1+2b+0.53*m)* (1-3%) is equal to or smaller than D2 and D2 is equal to or smaller than (D1+2b+0.53*m)*(1+3%). 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, it is related to a kind of blower fan and the air-conditioner outdoor unit including the blower fan.
Background technology
At present, the fan of use in air-conditioner outdoor unit is generally propeller fan, and propeller type fan is in the periphery of wheel hub
Portion is configured with blade, is blown using the lift produced by blade revolution.Now, compared near the wheel hub in blowout side,
What the outer circumferential side of propeller type fan blowout side was produced increases with fan gyratory directions identical revolving spiral stream, and the spiral flow is such as
The flowing i.e. axle stream of fan axial direction can not be converted into, then the dynamic pressure loss of energy, the aerodynamic performance of propeller type fan declines, together
When, spiral flow is impacted on the security protection grid of fan, is made the kinetic pressure losses of fluid and is increased, and has noise to produce.Therefore, existing
Have in technology and there are following two solutions：
First method is：By security protection grill designs into the safeguard protection grid for extending into radial bar；
Second method is：By security protection grill designs into by being configured to the bar of concentric circles and extending into radial
The safeguard protection grid of the clathrate that bar is constituted.
In first method, due to being not configured to the bar of concentric circles in security protection grid, so, in order to anti-
Only foreign matter is externally entering in propeller type fan, it is necessary to much extend into radial bar, by security protection grill designs
It is very close, but, very close due to security protection grill designs, the rotating flow from propeller type fan is by security protection lattice
Kinetic pressure losses and noise during grid are all very big.
In the second approach, security protection grid be by concentric circles bar and extend into the lattice that radial bar is constituted
Sub- shape, but the bar of the clathrate abreast extends relative to the revolution direction of principal axis of propeller type fan towards downstream, so, it is impossible to
Make directional steering of the rotating flow towards gyroaxis, there is a problem of that the dynamic pressure loss of energy, aerodynamic performance decline.
The content of the invention
It is contemplated that at least solving one of technical problem present in prior art.
Therefore, the purpose of one side of the invention is, there is provided a kind of blower fan for reducing kinetic pressure losses and noise.
The purpose of second aspect of the invention is, there is provided a kind of air-conditioner outdoor unit with above-mentioned blower fan.
To achieve the above object, the embodiment of one side of the invention provides a kind of blower fan, including：Fan main body,
The fan main body includes motor and wind wheel, and the wind wheel includes blade and wheel hub, and the blade is connected to by the wheel hub
In the rotary shaft of the motor；With air-out protective cover, the air-out protective cover is positioned at the air side of the blower fan, the air-out guarantor
Shield includes latitude circle ring and through silver group, it is described include through silver group it is multiple through silver, and it is multiple it is described through silver along the latitude
The radial arrangement of radial direction of ring, in the group through silver, through between the string of a musical instrument through silver aerofoil profile of silver described in adjacent two
Distance is S, and the length of the string of a musical instrument through silver aerofoil profile is a, the string of a musical instrument of the vane airfoil profile of the blade with perpendicular to the rotation
The angle of the plane of rotating shaft is θ, and a=S × tan θ.
In the above embodiment of the present invention, blower fan includes fan main body and air-out protective cover, and air-out protective cover is located at
The air side of blower fan, and air-out protective cover be by latitude circle ring and through silver group constitute it is grid-like, can prevent outside object enter
Enter in blower fan；Adjacent two through silver the string of a musical instrument through silver aerofoil profile between apart from S, through silver aerofoil profile the string of a musical instrument length a, blade
The string of a musical instrument of aerofoil profile meets this condition of a=S × tan θ with the angle theta of the plane perpendicular to rotary shaft, so, can be revolved to blade
Dynamic pressure is reclaimed in the case of the moving air destruction minimum for changing the line of production raw, and blower fan produces what the dynamic pressure of rotating flow was reclaimed as static pressure
Effect preferably, improves the efficiency of blower fan.
In sum, on the one hand the blower fan that the above embodiment of the present invention is provided, air-out protective cover can prevent the object of outside
Into in blower fan, the efficiency of blower fan on the other hand can be improved.
In addition, the blower fan provided according to the above embodiment of the present invention also has following additional technical feature：
According to one embodiment of present invention, each windward side through silver is in the rotary shaft perpendicular to the blower fan
Plane on projection be curved section on spiral of Archimedes.
According to one embodiment of present invention, the air-out protective cover is included described in latitude circle ring described at least three and multiple
Through silver group, the center of circle of latitude circle ring described at least three overlaps and radius is different, is provided with per latitude circle interannular described in adjacent two
One described through silver group, and shape through silver of multiple described in the same group through silver, size are identical, and different is described
It is different through the shape through silver in silver group.
According to one embodiment of present invention, the windward side through silver in the different groups through silver perpendicular to
The curved section for obtaining is projected in the plane of the rotary shaft to be located on same spiral of Archimedes.
According to one embodiment of present invention, the starting point of the spiral of Archimedes is heavy with the center of circle of the latitude circle ring
Close, and on the axis of the rotary shaft.
According to one embodiment of present invention, the quantity through silver and the blower fan in each group through silver
Blade quantity prime number each other.
According to one embodiment of present invention, the tangent line of the air side of each windward side curved section through silver aerofoil profile
Parallel to the axis of the rotary shaft.
According to one embodiment of present invention, the blower fan also includes air-ducting ring, and one end of the air-ducting ring is set in institute
State outside wind wheel, the other end is connected with the air-out protective cover, and the axis of the air-ducting ring is located at the axis of the rotary shaft
On same straight line, there is gap between the air-ducting ring and the blade.
According to one embodiment of present invention, a diameter of D1 of the wind wheel, the footpath between the wind wheel and the air-ducting ring
It is b to spacing, the trailing edge of the blade is m with the minimum range of the sagittal plane of the outmost turns inlet side of the air-out protective cover,
A diameter of D2 of the sagittal plane of the air-out protective cover outmost turns inlet side, and（D1+2b+0.53×m）×（1-3%）}≤D2
≤{（D1+2b+0.53×m）×（1+3%）}.
Second embodiment of aspect of the present invention provides a kind of air-conditioner outdoor unit, including housing, is set on the housing
It is equipped with air outlet；Heat exchanger, the heat exchanger is arranged in the housing；With the blower fan described in any of the above-described embodiment,
The fan main body of the blower fan is arranged in the housing, and positioned at the front side of the heat exchanger, and the blower fan air-out
Just to the air outlet, the air-out protective cover of the blower fan is fixed on the housing, and covers the air outlet for side.
Additional aspect of the invention and advantage will become obvious in following description section, or by practice of the invention
Recognize.
Brief description of the drawings
Of the invention above-mentioned and/or additional aspect and advantage will become from description of the accompanying drawings below to embodiment is combined
Substantially and be readily appreciated that, wherein：
The structural representation of blower fans of the Fig. 1 according to one embodiment of the invention；
Fig. 2 is the structural representation of the air-out protective cover of blower fan shown in Fig. 1；
Fig. 3 is that the windward side through silver of air-out protective cover shown in Fig. 2 is obtained being projected in the plane of rotary shaft
Curved section schematic diagram；
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 air-out protective cover shown in Fig. 1.
Wherein, the corresponding relation in Fig. 1 to Fig. 5 between reference and component names is：
1 air-out protective cover, 10 latitude circle rings, 11 through silver, and 110 through silver aerofoil profile,
111 through silver aerofoil profile windward side curved section,
112 through the air side of the windward side curved section of silver aerofoil profile tangent line,
113 through silver aerofoil profile the string of a musical instrument,
114 through silver windward side in the plane of rotary shaft project curved section,
2 wind wheels, 3 air-ducting rings, 4 blower fans, 40 rotary shafts, the axis of 400 rotary shafts,
41 perpendicular to rotary shaft plane
Specific embodiment
It is below in conjunction with the accompanying drawings and specific real in order to be more clearly understood that the above objects, features and advantages of the present invention
Mode is applied to be further described in detail the present invention.It should be noted that in the case where not conflicting, the implementation of the application
Feature in example and embodiment can be mutually combined.
Many details are elaborated in the following description in order to fully understand the present invention, but, the present invention may be used also
Implemented with being different from mode described here using other, therefore, protection scope of the present invention does not receive following public tool
The limitation of body embodiment.
Blower fan and air-conditioner outdoor unit according to some embodiments of the invention is described with reference to the accompanying drawings.
As depicted in figs. 1 and 2, a kind of blower fan for providing according to some embodiments of the invention, including：Fan main body and air-out
Protective cover 1.
Wherein, as shown in figure 1, the fan main body includes motor 4 and wind wheel 2, the wind wheel 2 includes blade and wheel hub,
The blade is connected in the rotary shaft 40 of the motor 4 by the wheel hub；
As depicted in figs. 1 and 2, the air-out protective cover 1 is located at the air side of the blower fan, and the air-out protective cover 1
Including at least three latitude circle rings 10 and multiple through silver group, the center of circle of latitude circle ring 10 described at least three overlaps and radius is different,
In the specific example shown in Fig. 2, the air-out protective cover 1 is including seven latitude circle rings 10 being arranged successively and six through silver
Group, the semidiameter of adjacent two latitude circles ring 10 is equal；
As shown in Fig. 2 each it is described include multiple through silver group through silver 11, per between latitude circle ring 10 described in adjacent two
Be provided with one it is described through silver group, and it is each it is described through silver group it is multiple described through silver 11 along the latitude circle ring 10 footpath
To radial arrangement；
In each group through silver, described in adjacent two through the distance between the string of a musical instrument 113 through silver aerofoil profile of silver 1 be S,
The length of the string of a musical instrument 113 through silver aerofoil profile is a（As shown in Figure 5）, the string of a musical instrument of the vane airfoil profile of the blade with perpendicular to
The angle of the plane 41 of the rotary shaft 40 is θ, and a=S × tan θ.
As shown in figure 5, the cross section through silver of the rotational circle cylinder interception centered on the axis 400 of rotary shaft 40
Axis plane projection is referred to as through silver aerofoil profile 110, is the string of a musical instrument through silver aerofoil profile through the midpoint line of the rounding at the two of silver aerofoil profile 110
113, with once in silver group, adjacent two through silver aerofoil profile the string of a musical instrument 113 between interval S with through silver aerofoil profile from latitude circle ring
The change of the radial distance in the center of circle and change, in the example shown in Fig. 3, during adjacent two are with the axis of rotary shaft through silver 11
Minimum range between the string of a musical instrument through silver aerofoil profile of the rotational circle cylinder interception of the heart is S1, ultimate range is S2, apart from the scope of S
For：[S1,S2], in formula a=S × tan θ, S is through bar by the rotational circle cylinder interception centered on a certain axis by rotary shaft
Distance between the string of a musical instrument of piece aerofoil profile, a is the length of the string of a musical instrument now through silver aerofoil profile.
In the above embodiment of the present invention, blower fan includes fan main body and air-out protective cover, and air-out protective cover is located at
The air side of blower fan, and air-out protective cover be by multiple latitude circle rings and it is multiple through silver group constitute it is grid-like, outside can be prevented
Object enter blower fan in；Adjacent two through silver the string of a musical instrument through silver aerofoil profile between apart from S, through silver aerofoil profile the string of a musical instrument length
Degree a, the string of a musical instrument of the vane airfoil profile of blade meet this condition of a=S × tan θ with the angle theta of the plane perpendicular to rotary shaft, this
Sample, can reclaim dynamic pressure in the case of the moving air destruction minimum produced to blade rotation, meanwhile, blower fan is produced into rotating flow
The effect that reclaims as static pressure of dynamic pressure preferably, improve the efficiency of blower fan.
In sum, on the one hand the blower fan that the above embodiment of the present invention is provided, air-out protective cover can prevent the object of outside
Into in blower fan, the efficiency of blower fan on the other hand can be improved.
In the preferred embodiment of the present invention, as shown in figure 3, each windward side through silver is perpendicular to described
The curved section 114 of the projection in the plane of the rotary shaft of blower fan is the curved section on spiral of Archimedes.
In the above embodiment of the present invention, through throwing of the windward side of silver in the plane perpendicular to the rotary shaft of blower fan
Shadow is spiral of Archimedes（That is constant speed helix）On curved section, when the blade of blower fan rotates, can produce axially, radially
The air flowed with circumferential three directions, the windward side through silver is being projected as Archimedes in the plane of rotary shaft
During curved section on helix, on the one hand can reduce the air for flowing and run into the turbulent flow produced during through silver, reduce noise, and
The loss of dynamic pressure can be reduced, while being conducive to for blower fan producing rotating flow（Flowing i.e. circumferentially）Dynamic pressure as static pressure return
Receive.
Preferably, as shown in Fig. 2 shape through silver 11 of multiple described in the same group through silver, size are identical.
It is identical with the shape once multiple in silver group through silver, size, on the one hand it is easy to through the batch production of silver,
Production cost is reduced, is on the other hand easy to once the installation in silver group through silver.
In one embodiment of this invention, as shown in Fig. 2 the shape through silver 11 in the different group through silver
It is different.
Specifically, the windward side through silver 11 in the different groups through silver is perpendicular to the flat of the rotary shaft
The curved section 114 for obtaining is projected on face to be located on same spiral of Archimedes.
In each group through silver provided in the embodiment of the present invention through silver, be on same spiral of Archimedes
The curved section of interception, with identical once the position intercepted through silver in silver group so that with once in silver group through silver
Shape it is identical, the different position through being intercepted through silver in silver group is different so that it is different through in silver group through silver
Shape is different, after interception, through in silver group through silver centered on the center of circle of latitude circle ring, circumferentially array（Through silver in circle
Rotated during all arrays）Mode arranged.
As shown in figure 3, the axis with Z axis as rotary shaft, through silver vertical rotating shaft axis plane（That is X/Y plane）
It is upper project the curved section 114 for obtaining where the cartesian coordinate system equation of spiral of Archimedes be：
Wherein, r represents polar diameter；θ represents the aerofoil profile string of a musical instrument and the plane perpendicular to rotary shaft of blade（That is the XY in Fig. 3 puts down
Face）Angle；λ represents the polar angle of spiral of Archimedes, and 0≤λ≤θ is used to control the shape and length of spiral of Archimedes
It is short, when λ=0, r=0, as λ=θ, r=D3；φ represents the angle rotated during circumference array through silver, and 0≤φ≤2 π is used
To control the angle of the rotation array of curved section 114 obtained through silver projection.
Spiral of Archimedes is drawn due to accurately relatively difficult, in Practical Project, gone using Approximate
Spiral of Archimedes is approached, a kind of technique of painting of the spiral of Archimedes of close approximation has been provided below, as shown in figure 4,
（1）First O is the center of circle, is drawn as radius with helical pitch L and justified（Not shown in figure）, then circumference and radius are divided into identical n
Decile, n=8 in figure；
（2）With O as the center of circle, the radius for making each isocentric circular arc in respective digital intersects, obtain intersection point 1 ', 2 ', 3 ' ... 8 ' is each
The point of point, as spiral of Archimedes；
（3）Each point is smoothly connected successively, obtains final product the curve represented by solid line in spiral of Archimedes, i.e. figure.
In a specific embodiment of the invention, the starting point of the spiral of Archimedes（That is the center of circle O in Fig. 4）With institute
The center of circle for stating latitude circle ring overlaps.
Further, the center of circle of the latitude circle ring is located on the axis 400 of the rotary shaft 40.
The starting point of spiral of Archimedes overlaps with the center of circle of latitude circle ring, and the center of circle of latitude circle ring is located at the axis of rotary shaft
On, i.e., the starting point of spiral of Archimedes, the center of circle of latitude circle ring are respectively positioned on the axis of blower fan rotary shaft, the blade rotation of blower fan
The air of the flowing of generation can produce turbulent flow when running into through silver, and work as through the windward side of silver perpendicular to rotary shaft
The starting point on spiral of Archimedes where the curved section for obtaining is projected in plane is located at when on the axis of rotary shaft, can be reduced
Turbulence level, reduces the kinetic pressure losses of moving air, while the noise produced when reducing air impact through silver.
In one embodiment of this invention, as shown in Fig. 2 the quantity through silver 11 in the different group through silver
Difference, closer to the more through the quantity through silver 11 in silver group of the edge of latitude circle ring 1, to ensure adjacent two through between silver 11
Gap will not be excessive, will can not otherwise play a part of to prevent outside object from entering blower interior.
In the preferred embodiment of the present invention, the quantity through silver 11 in each group through silver with it is described
The quantity of the blade of blower fan prime number each other.
In the specific example shown in Fig. 2, the quantity of blade is 3, and from inside to outside, six through the number in silver group through silver
Amount be respectively 35,50,62,73,76,76, and 35,50,62,73 and 76 with 3 prime numbers each other（I.e. 35,50,62,73 and 76 and 3
There is no common divisor）.
Due to that can produce noise when blade is cut hits air, outer machine go out stream flow through air-out protective cover through silver when can also produce
Noise, the two noises can be interfered, when the quantity through silver in through silver group is relatively prime with the quantity of the blade of blower fan,
Interaction noise can be weakened.
In of the invention one preferred example, as shown in figure 5, each windward side curved section through silver aerofoil profile
Axis 400 of the tangent line 112 of 111 air side parallel to the rotary shaft 40.
Through the windward side curved section of silver aerofoil profile air side tangent line parallel to rotary shaft axis when, fan blade turn
Movable property life rotating flow run into through the windward side of silver after, along through silver windward side flow, because through silver aerofoil profile windward
The tangent line of the air side of lateral curvature line segment and the diameter parallel of rotary shaft, thus after rotating flow leaves from the air side of windward side along
The axis direction movement of rotary shaft, realizes and for rotating flow to be converted to axle stream, improves the axial-feeding-air effect of blower fan.
In a specific embodiment of the invention, as shown in figure 1, the blower fan also includes air-ducting ring 3, the air-ducting ring 3
One end be set in outside the wind wheel 2, the other end is connected with the air-out protective cover 1, and the axis of the air-ducting ring 3 with it is described
The axis 400 of rotary shaft 40 is located along the same line, and has gap between the air-ducting ring 3 and the blade.
Further, as shown in figure 1, between a diameter of D1 of the wind wheel 2, the radial direction between the wind wheel 2 and the air-ducting ring 3
Away from being b, the trailing edge of the blade is m with the minimum range of the sagittal plane of the outmost turns inlet side of the air-out protective cover 1, it is described go out
A diameter of D2 of the sagittal plane of the outmost turns inlet side of wind protective cover 1, 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 of wind wheel（I.e. impeller maximum outer rim circumscribed circle diameter）It is D1, wind
Radial direction spacing between wheel and air-ducting ring（Unilateral radial distance i.e. between blade outer rim and air-ducting ring internal face）It is b, blade trailing edge
（With blade inlet edge i.e. on blade（The edge of blade windward side）The edge being oppositely arranged）With air-out protective cover outmost turns inlet side
Sagittal plane minimum range be m, then the calculated diameter of the diameter D2 of the sagittal plane of air-out protective cover outmost turns inlet side be：
D2 '=D1+2b+0.53 × m, it is contemplated that the mismachining tolerance for leading the presence such as arc, mould of the air-ducting ring of blower fan, and blower fan dress
With reasons such as errors, the diameter of the sagittal plane of air-out protective cover outmost turns inlet side need to 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%）, i.e.,（D1+2b+0.53×m）×（1-3%）≤D2≤（D1+2b+0.53×m）×（1+3%）.When blower fan meets
During above-mentioned relation formula, the effect that blower fan produces the dynamic pressure of rotating flow to be reclaimed as static pressure is improve, and then improve the energy of blower fan
Effect.
The embodiment of second aspect present invention provides a kind of air-conditioner outdoor unit（Not shown in figure）, including housing（Figure
Not shown in）, heat exchanger（Not shown in figure）With the blower fan described in any of the above-described embodiment.
Wherein, it is provided with air outlet on the housing（Not shown in figure）；
The heat exchanger is arranged in the housing；
The fan main body of the blower fan is arranged in the housing, and positioned at the front side of the heat exchanger, and the wind
Just to the air outlet, the air-out protective cover of the blower fan is fixed on the housing, and covers the air-out for the air side of machine
Mouthful.
The air-conditioner outdoor unit that the above embodiment of the present invention is provided, including the blower fan described in any of the above-described embodiment, and have
There are whole beneficial effects of blower fan described in any of the above-described embodiment, therefore, air-conditioner outdoor unit work provided in an embodiment of the present invention
When making, the noise of fan is small, and efficiency is high.
In sum, the blower fan that the present invention is provided, with following feature：1st, adjacent two through silver through silver aerofoil profile
Between the string of a musical instrument apart from S, the length a of the string of a musical instrument through silver aerofoil profile, the string of a musical instrument of the vane airfoil profile of blade with perpendicular to the flat of rotary shaft
The angle theta in face meets a=S × tan θ；2nd, it is projected as Archimedes's spiral shell in the plane of vertical rotating shaft through the windward side of silver
Curved section in spin line；3rd, through silver aerofoil profile windward side curved section air side tangent line parallel to rotary shaft axis；4、
Often once in silver group through silver quantity and blower fan blade quantity prime number each other；5th, the diameter D1 of wind wheel, wind wheel to wind-guiding
Unilateral radial direction spacing b, the minimum range m of blade trailing edge and air-out protective cover outmost turns inlet side sagittal plane of circle and air-out protection
The diameter D2 of cover outmost turns inlet side sagittal plane meets（D1+2b+0.53×m）×（1-3%）}≤D2≤{（D1+2b+0.53×
m）×（1+3%）；6th, the starting point of spiral of Archimedes overlaps with the center of circle of latitude circle ring, and on the axis of rotary shaft, meets
After six conditions of the above, the lower noise that blower fan is produced, while dynamic pressure can be reclaimed in the case of destruction gas flowing minimum, and
Blower fan produces the dynamic pressure of rotating flow best as static pressure recovering effect, improves the efficiency of blower fan.
In the description of the invention, term " multiple " refers to two or more；Term " connection ", " connected ", " Gu
It is fixed " etc. all should be interpreted broadly, for example, " connection " can be fixedly connected, or be detachably connected, or integratedly connect
Connect；Can be joined directly together, it is also possible to be indirectly connected to by intermediary.For the ordinary skill in the art, may be used
To understand above-mentioned term concrete meaning in the present invention as the case may be.
In the description of this specification, the description of term " one embodiment ", " some embodiments ", " specific embodiment " etc.
Mean that the specific features, structure, material or the feature that are described with reference to the embodiment or example are contained in of the invention at least one real
In applying example or example.In this manual, the schematic representation to above-mentioned term is not necessarily referring to identical embodiment or reality
Example.And, the specific features of description, structure, material or feature can in one or more any embodiments or example with
Suitable mode is combined.
The preferred embodiments of the present invention are the foregoing is only, is not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.It is all within the spirit and principles in the present invention, made any repair
Change, equivalent, improvement etc., should be included within the scope of the present invention.
Claims (9)
1. a kind of blower fan, it is characterised in that including：
Fan main body, the fan main body includes motor and wind wheel, and the wind wheel includes blade and wheel hub, and the blade passes through institute
Wheel hub is stated to be connected in the rotary shaft of the motor；With
Air-out protective cover, the air-out protective cover be located at the blower fan air side, the air-out protective cover include latitude circle ring and
It is described to include multiple through silver through silver group through silver group, and it is in radiation along the radial direction of the latitude circle ring through silver that multiple is described
Shape arrange, in the group through silver, described in adjacent two through the distance between the string of a musical instrument through silver aerofoil profile of silver be S, it is described through bar
The length of the string of a musical instrument of piece aerofoil profile is the angle of a, the string of a musical instrument of the vane airfoil profile of the blade and the plane perpendicular to the rotary shaft
It is θ, and a=S × tan θ；
Wherein, the air-out protective cover includes that latitude circle ring described at least three and multiple are described through silver group, described at least three
The center of circle of latitude circle ring overlaps and radius is different, is provided with described in one through silver group, same institute per latitude circle interannular described in adjacent two
State shape through multiple described in silver group through silver, size identical, it is described through silver in the different groups through silver
Shape it is different.
2. blower fan according to claim 1, it is characterised in that
Projection of each windward side through silver in the plane perpendicular to the rotary shaft is spiral of Archimedes
On curved section.
3. blower fan according to claim 1, it is characterised in that
The windward side through silver in the different groups through silver projects in the plane perpendicular to the rotary shaft and obtains
Curved section be located at same spiral of Archimedes on.
4. blower fan according to claim 3, it is characterised in that
The starting point of the spiral of Archimedes overlaps with the center of circle of the latitude circle ring, and on the axis of the rotary shaft.
5. blower fan according to claim 1, it is characterised in that
The quantity of the quantity through silver in the group through silver and the blade of blower fan prime number each other.
6. blower fan according to claim 1, it is characterised in that
Axis of the tangent line of the air side of each windward side curved section through silver aerofoil profile parallel to the rotary shaft.
7. blower fan according to any one of claim 1 to 6, it is characterised in that also include：
Air-ducting ring, one end of the air-ducting ring is set in outside the wind wheel, and the other end is connected with the air-out protective cover, and described
The axis of air-ducting ring is located along the same line with the axis of the rotary shaft, between having between the air-ducting ring and the blade
Gap.
8. blower fan according to claim 7, it is characterised in that
A diameter of D1 of the wind wheel, the radial direction spacing between the wind wheel and the air-ducting ring is b, the trailing edge of the blade and institute
The minimum range for stating the sagittal plane of the outmost turns inlet side of air-out protective cover is m, the air-out protective cover outmost turns inlet side
A diameter of D2 of sagittal plane, and { (D1+2b+0.53 × m) × (1-3%) }≤D2≤{ (D1+2b+0.53 × m) × (1+
3%) }.
9. a kind of air-conditioner outdoor unit, it is characterised in that including：
Housing, air outlet is provided with the housing；
Heat exchanger, the heat exchanger is arranged in the housing；With
Blower fan as any one of claim 1 to 8, the fan main body of the blower fan is arranged in the housing, and position
In the front side of the heat exchanger, and the blower fan air side just to the air outlet, the air-out protective cover of the blower fan is consolidated
Determine onto the housing, and cover the air outlet.
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| CN201410109964.XA CN103899576B (en) | 2014-03-21 | 2014-03-21 | fan and air conditioner outdoor machine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410109964.XA CN103899576B (en) | 2014-03-21 | 2014-03-21 | fan and air conditioner outdoor machine |
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| CN103899576A CN103899576A (en) | 2014-07-02 |
| CN103899576B true CN103899576B (en) | 2017-05-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410109964.XA Active CN103899576B (en) | 2014-03-21 | 2014-03-21 | fan and air conditioner outdoor machine |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105546777A (en) * | 2016-01-27 | 2016-05-04 | 珠海格力电器股份有限公司 | Air duct structure and air conditioner |
| WO2018040015A1 (en) * | 2016-08-31 | 2018-03-08 | 广东泛仕达机电有限公司 | Volute housing and forward multi-blade centrifugal fan |
| KR101996052B1 (en) * | 2016-11-01 | 2019-07-03 | 엘지전자 주식회사 | Air conditioner |
| CN106766045B (en) * | 2016-11-15 | 2019-12-10 | 广东美的制冷设备有限公司 | Air supply assembly and air conditioner |
| CN106766046A (en) * | 2016-11-15 | 2017-05-31 | 广东美的制冷设备有限公司 | Air-supply assembly and air-conditioner |
| CN107178525B (en) * | 2017-06-23 | 2019-02-15 | 广东美的制冷设备有限公司 | Wind wheel component and refrigeration equipment with it |
| CN107816754A (en) * | 2017-11-29 | 2018-03-20 | 青岛海信电子设备股份有限公司 | A kind of indoor apparatus of air conditioner |
| CN108731128B (en) * | 2018-06-20 | 2021-01-22 | 广东美的制冷设备有限公司 | Air outlet mesh enclosure and air conditioner outdoor unit |
| CN108916963B (en) * | 2018-09-25 | 2023-11-07 | 广东海信家电有限公司 | Range hood guide ring and range hood |
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