CN203810596U - Fan air outlet protection cover, fan and air conditioner outdoor unit - Google Patents
Fan air outlet protection cover, fan and air conditioner outdoor unit Download PDFInfo
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- CN203810596U CN203810596U CN201420133095.XU CN201420133095U CN203810596U CN 203810596 U CN203810596 U CN 203810596U CN 201420133095 U CN201420133095 U CN 201420133095U CN 203810596 U CN203810596 U CN 203810596U
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- blower fan
- protective cover
- out protective
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- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 116
- 229910052709 silver Inorganic materials 0.000 claims description 79
- 239000004332 silver Substances 0.000 claims description 79
- 230000001681 protective effect Effects 0.000 claims description 57
- 230000000694 effects Effects 0.000 abstract description 7
- 230000003068 static effect Effects 0.000 abstract description 7
- 238000000034 method Methods 0.000 description 7
- 230000008901 benefit Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000010422 painting Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000010923 batch production Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
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Abstract
The utility model provides a fan air outlet protection cover, a fan and an air conditioner outdoor unit. The fan air outlet protection cover comprises a plurality of warp strip piece groups, and the number of warp strip pieces in the warp strip piece group and the number of blades are relatively prime. The protection of the windward sides of the warp strip pieces on the plane perpendicular to a 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%)}. A starting point of the Archimedes spiral and circle centers of weft rings coincide and are located on the axis of the rotating shaft. 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, 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 revolution to produce.Now, with at the wheel hub that blows out side, nearby compare, 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 for the bar by concentric circles and extend 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 rotating flow towards the directional steering of gyroaxis, the problem that exists the dynamic pressure loss of energy, aerodynamic performance to decline.
Utility model 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 air-out protective cover that reduces the blower fan of blower fan dynamic pressure loss and noise is provided.
The object of second aspect of the utility model is, a kind of blower fan with above-mentioned blower fan protective cover is provided.
The object of the 3rd aspect of the utility model 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 utility model provides a kind of air-out protective cover of blower fan; comprise latitude circle ring and along described latitude circle ring, radially arrange 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 above-described embodiment of the present utility model, 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), during 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 when silver on the one hand, reduced 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 utility model embodiment 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 when silver on the one hand; reduced noise; and when can reduce 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 utility model above-described embodiment in addition, also has following additional technical feature:
According to an embodiment of the present utility model, described air-out protective cover comprises at least three described latitude circle rings and a plurality of through silver group, the center of circle of at least three described latitude circle rings overlaps and radius difference, described in each, through silver group, include a plurality of 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 a plurality of described through silver being radially radial and arranging along described latitude circle ring, the same described a plurality of described shape through silver in silver group, size is identical, the different described described shapes through silver in silver group are different.
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 rotating 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 rotating shaft.
According to an embodiment of the present utility model, the tangent line through the air side of the windward side curved section through silver aerofoil profile of silver described in each is parallel to the axis of described rotating shaft.
According to an embodiment of the present utility model, the described quantity through the quantity of silver and the blade of described blower fan described in each in silver group is prime number each other.
The embodiment of second 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, 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 an embodiment of the present utility model; 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 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 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 the 3rd aspect of the utility model 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 over against 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 utility model and advantage will become in description part below obviously, or recognize by practice of the present utility model.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present utility model and advantage accompanying drawing below combination obviously and is easily understood becoming the description of embodiment, wherein:
Fig. 1 is according to the structural representation of the air-out protective cover described in the utility model one embodiment;
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 the utility model one embodiment.
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 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 application's embodiment and the feature in embodiment can combine mutually.
A lot of details have been 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.
Air-out protective cover, blower fan and air-conditioner outdoor unit according to the blower fan of some embodiment of the utility model are 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 embodiment of the utility model, comprises at least three latitude circle rings 10 and a plurality of through silver group.
Wherein, the center of circle of at least three described latitude circle rings 10 overlap and radius different, 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, the semidiameter of adjacent two latitude circle rings 10 equates;
As shown in Figure 1, described in each, through silver group, include a plurality of 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 a plurality of 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 above-described embodiment of the present utility model, 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), during 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 when silver on the one hand, reduced 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 utility model embodiment 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 when silver on the one hand; reduced noise; and when can reduce 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 a plurality of described shape through silver 11, size in silver group is identical.
With a plurality of shapes through silver in silver group, big or small identical, be convenient to the batch production through silver on the one hand, reduced production cost, be convenient on the other hand the same installation through silver in silver group.
In an embodiment of the present utility model, as shown in Figure 1, the different described described shapes through silver 11 in silver group are different.
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 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 through silver intercepting in silver group, make with the shape through silver in silver group identical, the different positions through silver intercepting in silver group are different, make the different shapes through silver in silver group different, after intercepting, in silver group through silver centered by the center of circle of latitude circle ring, mode by circumference array (being rotated in the process through silver at circumference array) is arranged.
As shown in Figure 2, the axis that the Z axis of take is rotating shaft, through silver at the cartesian coordinate system equation of the spiral of Archimedes at plane (being XY plane) curved section 114 places that above projection obtains of vertical rotating shaft axis is:
Wherein, r represents utmost point footpath; The aerofoil profile string of a musical instrument that θ represents blade is the XY plane in Fig. 2 with the plane 41(perpendicular to 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, take helical pitch S as radius picture circle (not shown), 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 utility model, 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 when running into through silver, can produce turbulent flow, and 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 while being 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 when silver simultaneously.
In an embodiment of the present utility model, as shown in Figure 1, the different described described quantity through silver 11 in silver group is different, 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 utility model, the described quantity through the quantity of silver 11 and the blade of described blower fan described in each in silver group is prime number each other.
In the concrete example shown in Fig. 1, the quantity of blade is 3, from inside to outside, six in silver group the quantity through silver be respectively 35,50,62,73,76,76, 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 when silver; these two noises can interfere, and when 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 4, the tangent line 112 through the air side of the windward side curved section 111 through silver aerofoil profile of silver described in each is parallel to the axis 400 of described rotating shaft 40.
The axis plane projection of the cross section through silver of the rotational circle cylinder intercepting centered by the axis 400 of rotating shaft 40 is called through silver aerofoil profile 110, through the round mid point line of leading of silver aerofoil profile 110 two, it is the string of a musical instrument 113 through silver aerofoil profile, when the tangent line through 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, along the windward side through silver, flow, 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, realized rotating flow has been converted to axial flow, improved the axial-feeding-air effect of blower fan.
The embodiment of the utility model second aspect 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 utility model above-described embodiment 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 utility model; 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; the radial spacing that described wind wheel 2 and described air-ducting ring are 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 above-described embodiment of the present utility model, the diameter of wind wheel (being the circumscribed circle diameter of the maximum outer rim of impeller) is D1, radial spacing between wind wheel and air-ducting ring (being the monolateral radial distance between blade outer rim and air-ducting ring internal face) 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 reasons such as 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%), i.e. (D1+2b+0.53 * m) * (1-3%)≤D2≤(D1+2b+0.53 * m) * (1+3%).When blower fan meets above-mentioned relation formula, improved 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 third aspect 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 over against 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 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 unit 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, every relatively prime through the quantity of silver and the blade quantity of blower fan in silver group; 2, through the windward side of silver, in the plane at vertical rotating shaft, be projected as the curved section on spiral of Archimedes; 3, the tangent line through the air side of the windward side curved section of silver aerofoil profile is parallel to the axis of rotating shaft; 4, the diameter D1 of wind wheel, wind wheel are 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, improved the efficiency of blower fan.
In description of the present utility model, term " a plurality of " 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 description, the description of term " embodiment ", " some embodiment ", " 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 the specific features of description, structure, material or feature can be with suitable mode combinations in any one or more embodiment 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 modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (10)
1. an air-out protective cover for blower fan, is characterized in that, comprising:
Latitude circle ring; With
Along described latitude circle ring, radially arrange 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 a plurality of through silver group; the center of circle of at least three described latitude circle rings overlaps and radius difference; described in each, through silver group, include a plurality of 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 a plurality of described through silver being radially radial and arranging along described latitude circle ring; the same described a plurality of described shape through silver, size in silver group is identical, and the different described described shapes through silver in silver group are different.
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,
Tangent line through the air side of the windward side curved section through silver aerofoil profile of silver described in each is parallel to the axis of described rotating shaft.
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 through the quantity of silver and the blade of described blower fan described in each in silver group is prime number each other.
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 over against described air outlet; the air-out protective cover of described blower fan is fixed on described housing, and covers described air outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420133095.XU CN203810596U (en) | 2014-03-21 | 2014-03-21 | Fan air outlet protection cover, fan and air conditioner outdoor unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420133095.XU CN203810596U (en) | 2014-03-21 | 2014-03-21 | Fan air outlet protection cover, fan and air conditioner outdoor unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203810596U true CN203810596U (en) | 2014-09-03 |
Family
ID=51449337
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420133095.XU Expired - Lifetime CN203810596U (en) | 2014-03-21 | 2014-03-21 | Fan air outlet protection cover, fan and air conditioner outdoor unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203810596U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103900167A (en) * | 2014-03-21 | 2014-07-02 | 美的集团股份有限公司 | Air outlet protection hood of fan, fan and air conditioner outdoor machine |
| CN117073083A (en) * | 2023-08-18 | 2023-11-17 | 湖南省湘能舒适环境科技有限责任公司 | Full-effect air conditioner |
-
2014
- 2014-03-21 CN CN201420133095.XU patent/CN203810596U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103900167A (en) * | 2014-03-21 | 2014-07-02 | 美的集团股份有限公司 | Air outlet protection hood of fan, fan and air conditioner outdoor machine |
| CN117073083A (en) * | 2023-08-18 | 2023-11-17 | 湖南省湘能舒适环境科技有限责任公司 | Full-effect air conditioner |
| CN117073083B (en) * | 2023-08-18 | 2024-06-04 | 湖南省湘能舒适环境科技有限责任公司 | Full-effect air conditioner |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140903 |