CN203810595U - 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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- CN203810595U CN203810595U CN201420132815.0U CN201420132815U CN203810595U CN 203810595 U CN203810595 U CN 203810595U CN 201420132815 U CN201420132815 U CN 201420132815U CN 203810595 U CN203810595 U CN 203810595U
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- blower fan
- protective cover
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- fan
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- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 77
- 229910052709 silver Inorganic materials 0.000 claims description 69
- 239000004332 silver Substances 0.000 claims description 69
- 230000001681 protective effect Effects 0.000 claims description 51
- 230000000694 effects Effects 0.000 abstract description 10
- 230000009191 jumping Effects 0.000 description 5
- 230000008901 benefit Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007664 blowing Methods 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
- 230000003993 interaction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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- Structures Of Non-Positive Displacement Pumps (AREA)
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 weft rings and warp strip pieces arranged in the radial direction of the weft rings. A curved section on the windward side of a warp strip piece wing shape is a smooth curved section formed by at least one arc section. The included angle formed between the thread of the warp strip piece wing shape and the axis of a rotating shaft of the fan is 0-23 degrees, so that circumferential rotating flow generated by rotating of the fan is converted into axial flow to in a maximization mode, and the axial air supplying effect of the fan is improved. High temperature tripping of an air conditioner can be reduced. Due to the fact that the curved section on the windward side of the warp strip piece wing shape is designed to be the smooth curved section, dynamic pressure loss of the fan can be reduced when the circumferential rotating flow is converted into the axial flow.
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 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, the dynamic pressure loss from the rotating flow of propeller type fan when by security protection grid is 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.
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, the air-out protective cover that rotating flow can be converted to axial flow, reduction dynamic pressure loss on a kind of blower fan is provided.
The object of the utility model second aspect is, a kind of blower fan that comprises above-mentioned air-out 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 curved section of the described windward side through silver aerofoil profile through silver is the smooth curve section that comprises at least one circular arc line segment; described angle through between the axis of the string of a musical instrument of silver aerofoil profile and the rotating shaft of blower fan is β, and 0 °≤β≤23 °.
Air-out protective cover comprises latitude circle ring and through silver, and the angle through between the axis of the string of a musical instrument of silver aerofoil profile and the rotating shaft of blower fan is 0 °～23 °, so that the circulation that rotates in a circumferential direction substantially blower fan rotation being produced is changed to axial flow, improve the axial-feeding-air effect of blower fan, simultaneously in the time that blower fan is used for air-conditioner outdoor unit, the wind that blower fan produces is hot blast, hot blast flows out off-premises station by axial flow, reduce the backflow of condenser place hot blast, improve the heat transfer effect of condenser, be conducive to reduce the high temperature stop jumping phenomenon of air-conditioner; The curved section of the windward side through silver aerofoil profile is designed to smooth curve section, due to smooth curve Duan Shangwu sudden change, what blower fan rotated to form like this rotate in a circumferential direction, and stream flows along the windward side through silver, when rotating flow is converted to axial flow, smooth windward side is less to the obstruction of air-flow, and the dynamic pressure loss that makes rotating flow be converted to the wind energy of axial flow generation reduces.
In above-described embodiment of the present utility model, by the curved section of the windward side through silver aerofoil profile is designed to smooth curve section, the dynamic pressure loss when rotating flow that has reduced blower fan is converted to axial flow; Angle through between the axis of the string of a musical instrument of silver aerofoil profile and the rotating shaft of blower fan is 0 °～23 °, so that the circulation that rotates in a circumferential direction substantially blower fan rotation being produced is changed to axial flow, improve the axial-feeding-air effect of blower fan, can reduce the high temperature stop jumping of air-conditioner simultaneously.
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, 5 °≤β≤20 °.
According to an embodiment of the present utility model, the aerofoil profile string of a musical instrument of the blade of described blower fan be θ perpendicular to the interplanar angle of described rotating shaft, and β=θ/2 ± 3 °.
According to an embodiment of the present utility model, the angle described in each between the line at circular arc line segment two ends and the axis of described rotating shaft is α, and 0 °≤α≤23 °.
According to an embodiment of the present utility model, the curved section of the described described windward side through silver aerofoil profile is made up of a described circular arc line segment, and angle between the line at described circular arc line segment two ends and the axis of described rotating shaft is 5 °～20 °.
According to an embodiment of the present utility model, the curved section of the described described windward side through silver aerofoil profile comprises many circular arc line segments that curvature is identical or curvature is different that connect in turn.
According to an embodiment of the present utility model, the curved section of the described described windward side through silver aerofoil profile is the curved section on ellipse, hyperbola or parabola.
According to an embodiment of the present utility model, the tangent line of the air side of the curved section of the described windward side through silver aerofoil profile is parallel to the axis of described rotating shaft.
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 air-out protective cover, described air-out protective cover is the air-out protective cover of the blower fan described in above-mentioned arbitrary embodiment, and described air-out protective cover is positioned at the air side of described blower fan.
The embodiment of the utility model third aspect provides a kind of air-conditioner outdoor unit, comprises housing, on described housing, is provided with air outlet; Heat exchanger, described heat exchanger is arranged in described housing; With the blower fan described in above-described 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 utility model and advantage will become in description part below obviously, or recognize by practice of the present utility model.
Brief description of the drawings
Above-mentioned and/or additional aspect of the present utility model and advantage accompanying drawing below combination is understood becoming the description of embodiment obviously and easily, wherein:
Fig. 1 is according to the structural representation of the air-out protective cover of the blower fan described in the utility model one embodiment;
Fig. 2 is the structural representation through silver aerofoil profile of the protective cover of air-out shown in Fig. 1;
Fig. 3 is according to the structural representation of the blower fan described in the utility model one embodiment.
Wherein, in Fig. 1 to Fig. 3, the corresponding relation between Reference numeral and component names is:
1 air-out protective cover, 10 latitude circle rings, 11 through silver, the curved section of 110 windward sides through silver aerofoil profile,
The tangent line of the air side of the curved section of 111 windward sides through silver aerofoil profile,
112 strings of a musical instrument through silver aerofoil profile, 2 wind wheels, 3 air-ducting ring, 4 motors, 40 rotating shafts,
The axis of 400 rotating shafts
Detailed description of the invention
In order more clearly to understand above-mentioned purpose of the present utility model, feature and advantage, below in conjunction with the drawings and specific embodiments, the utility model is further described in detail.It should be noted that, in the situation that not conflicting, the feature in the application's embodiment and embodiment can combine mutually.
A lot of details are set forth in the following description so that fully understand the utility model; but; the utility model can also adopt other to be different from mode described here and implement, and therefore, protection domain of the present utility model is not subject to the restriction of following public specific embodiment.
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 shown in Figure 1, the air-out protective cover 1 of a kind of blower fan providing according to some embodiment of the utility model, comprise latitude circle ring 10 and along described latitude circle ring 10 radially arrange through silver 11;
As shown in Figure 2, the curved section 110 of the described windward side through silver aerofoil profile through silver 11 is the smooth curve section that comprises at least one circular arc line segment, described angle through between the axis 400 of the string of a musical instrument 112 of silver aerofoil profile and the rotating shaft of blower fan is β, and 0 °≤β≤23 °.
Further, 5 °≤β≤20 °, preferably, β is 8 °, 10 °, 15 ° or 18 °.
Further, the aerofoil profile string of a musical instrument of the blade of described blower fan be θ perpendicular to the interplanar angle of described rotating shaft, and β=θ/2 ± 3 °.
Air-out protective cover comprises latitude circle ring and through silver, and the angle through between the axis of the string of a musical instrument of silver aerofoil profile and the rotating shaft of blower fan is 0 °～23 °, so that the circulation that rotates in a circumferential direction substantially blower fan rotation being produced is changed to axial flow, improve the axial-feeding-air effect of blower fan; In the time that blower fan is used for air-conditioner outdoor unit, the wind that blower fan produces is hot blast simultaneously, and hot blast flows out off-premises station by axial flow, has reduced the backflow of condenser place hot blast, has improved the heat transfer effect of condenser, is conducive to reduce the high temperature stop jumping phenomenon of air-conditioner; The curved section of the windward side through silver aerofoil profile is designed to smooth curve section, due to smooth curve Duan Shangwu sudden change, what blower fan rotated to form like this rotate in a circumferential direction, and stream flows along the windward side through silver, when rotating flow is converted to axial flow, smooth windward side is less to the obstruction of air-flow, and the dynamic pressure loss that makes rotating flow be converted to the wind energy of axial flow generation reduces; Angle through between the axis of the string of a musical instrument of silver aerofoil profile and the rotating shaft of blower fan be β, blower fan blade the aerofoil profile string of a musical instrument be θ perpendicular to the interplanar angle of rotating shaft; and β=θ/2 ± 3 °; can make like this blade of blower fan coordinate with air-out protective cover, can better rotating flow be converted to axial flow.
First, it should be noted that, straightway can regard that curvature is 0, radius is infinitely-great circular arc line segment as; Secondly, be defined as through silver aerofoil profile: centered by the rotating shaft of blower fan, the intercepting of the rotational circle cylinder of axle is called through silver aerofoil profile through the axis plane projection of the cross section of silver, is called the string of a musical instrument through silver aerofoil profile through the line of leading round mid point at silver aerofoil profile two ends.
Because the angle theta between the aerofoil profile string of a musical instrument of blade and the axis of rotating shaft is different at root of blade and vane tip, the radius (being that the axis of rotating shaft of blower fan is to the distance of root of blade) of setting wheel hub is R
1, with the aerofoil profile string of a musical instrument of the root of blade of wheel hub contact position and interplanar angle theta perpendicular to rotating shaft axis
1, the radius of wind wheel on blower fan (being that the axis of rotating shaft of blower fan is to the distance of vane tip) is R
2, the aerofoil profile string of a musical instrument of vane tip and perpendicular to the angle theta between the interplanar of rotating shaft axis
2, wherein on air-out protective cover, the radius of the latitude circle ring of innermost circle is R
1', now centered by the axis of rotating shaft line, with R
1' be radius rotational circle cylinder intercept in silver aerofoil profile, be β through the string of a musical instrument of silver aerofoil profile and the angle of rotating shaft
1, and β
1=θ
1/ 2 ± 3 °, on air-out protective cover, the radius of the latitude circle ring of outmost turns is R
2', now centered by the axis of rotating shaft line, with R
2' be radius rotational circle cylinder intercept in silver aerofoil profile, be β through the string of a musical instrument of silver aerofoil profile and the angle of rotating shaft
2, and β
2=θ
2/ 2 ± 3 °, taking radius as R
x' rotational circle cylinder intercept in silver aerofoil profile, the angle β through between the string of a musical instrument of silver aerofoil profile and the axis of rotating shaft
xfor:
In embodiment more of the present utility model, the angle described in each between the axis 400 of the line at circular arc line segment two ends and the rotating shaft of blower fan is α, and 0 °≤α≤23 °.
In one embodiment, as shown in Figure 2, the curved section 110 of the described windward side through silver aerofoil profile is made up of a described circular arc line segment, and the angle α of the line (as shown in phantom in Figure 2) at described circular arc line segment two ends and the axis of described rotating shaft is: 5 °≤α≤20 °.Preferably, α is 8 ° or 15 °.
In another specific embodiment, the curved section of the described described windward side through silver aerofoil profile is made up of many identical or different circular arc line segments of curvature that connect in turn, and many described circular arc line segments are round and smooth excessively.
Preferably, the curved section of the described described windward side through silver aerofoil profile is the curved section on elliptic arc, hyperbola or parabola.
Curved section on ellipse, hyperbola or parabola can be regarded as by infinite multiple small circular arc line segments and form, now the angle between the line at circular arc line segment two ends and the rotating shaft of blower fan can be approximately the angle between tangent line and the blower fan rotating shaft of circular arc line segment, in the time that the curved section of the windward side of silver aerofoil profile is the curved section on oval, hyperbola or parabola, the angle on curved section between the axis of the tangent line of every and blower fan rotating shaft is 0 °～23 °.
It should be noted that; consider unstability, blower fan blade, the processing of air-out protective cover, the assembling equal error of air current flow; the angular relationship of α, β and β and θ can be carried out suitable variation according to actual conditions, and the angular relationship of α, β and β and θ is not limited to the above.
In a preferred embodiment of the present utility model, as shown in Figure 2, the tangent line 111 of the air side of the curved section 110 of the described described windward side through silver aerofoil profile is parallel to the axis 400 of described rotating shaft.
In the time that the tangent line of the air side of the curved section of the windward side 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 curved section of the windward side through silver aerofoil profile parallel, so move through the tangent line of the air side of the windward side of silver aerofoil profile on rotating flow edge from the air side of windward side is left, move along the axis direction of rotating shaft, realize rotating flow has been converted to axial flow, improved the axial-feeding-air effect of blower fan.
In the concrete example shown in Fig. 1; described air-out protective cover 1 comprise seven successively sheathed latitude circle ring 10 and six through silver group; the semidiameter of adjacent two latitude circle rings 10 equates; 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.
Further; described in each, through the windward side of silver, the curved section of the projection in the plane of the rotating shaft perpendicular to described blower fan is the curved section on spiral of Archimedes (being constant speed helix); can reduce mobile air and run into the turbulent flow producing in the time of silver; reduce the interference of air-out protective cover flow air, reduced the loss of dynamic pressure.
Further, described in each, in silver group, the distance described in adjacent two through between the string of a musical instrument of silver aerofoil profile is S, the length of the described string of a musical instrument through silver aerofoil profile be a(as shown in Figure 2), the aerofoil profile string of a musical instrument of blade is θ with the angle of the plane perpendicular to described rotating shaft, and a=S × tan θ.Like this, air-out protective cover destroys minimum and reclaims dynamic pressure at the moving air that blade rotary is produced, and blower fan is produced to rotating flow and convert axial flow to, has improved the air-supply effect of blower fan.
Further again, in the concrete example shown in Fig. 1, the described quantity through the quantity of silver and the blade of described blower fan described in each in silver group is relatively prime, wherein, the quantity of blade is 3, from inside to outside, often in silver group, be respectively 35,50,62,73,76,76 through the quantity of silver, 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.
The embodiment of the utility model second aspect provides a kind of blower fan, as shown in Figure 3, comprises fan main body and air-out protective cover 1.
Wherein, as shown in Figure 3, 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 is the air-out protective cover 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 embodiment of the utility model second aspect provides comprises the air-out protective cover of the blower fan described in above-mentioned arbitrary embodiment, has whole beneficial effects of air-out protective cover described in above-mentioned arbitrary embodiment.
In the specific embodiment shown in Fig. 3; described blower fan also comprises air-ducting ring 3; radial spacing between described wind wheel 2 and described air-ducting ring 3 is b; the diameter of described wind wheel 2 is D1; 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%) }.
As diameter (being the circumscribed circle diameter of the maximum outer rim of the impeller) D1 of wind wheel, radial spacing (being the monolateral radial distance between blade outer rim and air-ducting ring internal face) b between wind wheel and air-ducting ring, the minimum range m of the sagittal plane of blade trailing edge (being the edge being oppositely arranged with blade inlet edge (edge of blade windward side) on blade) and air-out protective cover outmost turns inlet side meets (D1+2b+0.53 × m) × (1-3%)≤D2≤(when D1+2b+0.53 × m) × (1+3%), can improve blower fan and produce the dynamic pressure of rotating flow as the effect of static pressure recovery, and then the efficiency of raising blower fan.
The embodiment of the utility model third aspect provides a kind of air-conditioner outdoor unit (not shown), comprises the blower fan (as shown in Figure 3) described in housing (not shown), heat exchanger (not shown) and above-described 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.
When the air-conditioner outdoor unit that the embodiment of the utility model third aspect provides is worked, the noise of blower fan is little, efficiency is high, has reduced the generation of air-conditioning high temperature stop jumping simultaneously.
In sum, the air-out protective cover of the blower fan that the utility model provides, by the curved section of the windward side through silver aerofoil profile is designed to smooth curve section, has reduced the dynamic pressure loss that rotating in a circumferential direction of blower fan circulates while being changed to axial flow; Angle through between the axis of the string of a musical instrument of silver aerofoil profile and the rotating shaft of blower fan is 0 °～23 °, and the angle between the line at circular arc line segment two ends and the axis of rotating shaft of formation smooth curve section is 0 °～23 °, the rotating flow that blower fan is produced of maximizing is converted to axial flow, improve the axial-feeding-air effect of blower fan, can reduce the high temperature stop jumping of air-conditioner simultaneously.
In description of the present utility model, term " many " refers to two or more; Unless otherwise prescribed or explanation, term " connections ", " fixing " etc. all should be interpreted broadly, for example, " connection " can be to be fixedly connected with, and can be also to removably connect, or integratedly connection; 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 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 preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (10)
1. 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 curved section of the described windward side through silver aerofoil profile through silver is the smooth curve section that comprises at least one circular arc line segment, and described angle through between the axis of the string of a musical instrument of silver aerofoil profile and the rotating shaft of blower fan is β, and 0 °≤β≤23 °.
2. the air-out protective cover of blower fan according to claim 1, is characterized in that,
5°≤β≤20°。
3. the air-out protective cover of blower fan according to claim 2, is characterized in that,
The aerofoil profile string of a musical instrument of the blade of described blower fan be θ perpendicular to the interplanar angle of described rotating shaft, and β=θ/2 ± 3 °.
4. the air-out protective cover of blower fan according to claim 1, is characterized in that,
Angle described in each between the line at circular arc line segment two ends and the axis of described rotating shaft is α, and 0 °≤α≤23 °.
5. the air-out protective cover of blower fan according to claim 4, is characterized in that,
The curved section of the described described windward side through silver aerofoil profile is made up of a described circular arc line segment, and angle between the line at described circular arc line segment two ends and the axis of described rotating shaft is 5 °～20 °.
6. the air-out protective cover of blower fan according to claim 4, is characterized in that,
The curved section of the described described windward side through silver aerofoil profile comprises many circular arc line segments that curvature is identical or curvature is different that connect in turn.
7. the air-out protective cover of blower fan according to claim 6, is characterized in that,
The curved section of the described described windward side through silver aerofoil profile is the curved section on ellipse, hyperbola or parabola.
8. according to the air-out protective cover of the blower fan described in any one in claim 1 to 7, it is characterized in that,
The tangent line of the air side of the curved section of the described described windward side through silver aerofoil profile is parallel to the axis of described rotating shaft.
9. 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, described air-out protective cover is the air-out protective cover of the blower fan as described in any one in claim 1 to 8, described air-out protective cover is positioned at the air side of described blower fan.
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 claimed in claim 9; 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420132815.0U CN203810595U (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 |
|---|---|---|---|
| CN201420132815.0U CN203810595U (en) | 2014-03-21 | 2014-03-21 | Fan air outlet protection cover, fan and air conditioner outdoor unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203810595U true CN203810595U (en) | 2014-09-03 |
Family
ID=51449336
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420132815.0U Expired - Lifetime CN203810595U (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) | CN203810595U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103900166A (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 |
| CN106016511A (en) * | 2016-07-14 | 2016-10-12 | 广东美的暖通设备有限公司 | Air outlet hood and air-conditioning outdoor unit equipped with same |
-
2014
- 2014-03-21 CN CN201420132815.0U patent/CN203810595U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103900166A (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 |
| CN103900166B (en) * | 2014-03-21 | 2017-06-16 | 美的集团股份有限公司 | The air-out protective cover of blower fan, blower fan and air-conditioner outdoor unit |
| CN106016511A (en) * | 2016-07-14 | 2016-10-12 | 广东美的暖通设备有限公司 | Air outlet hood and air-conditioning outdoor unit equipped with same |
| CN106016511B (en) * | 2016-07-14 | 2021-11-05 | 广东美的暖通设备有限公司 | Air outlet cover and air conditioner outdoor unit with same |
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