CN104747493B - Air conditioner and its through-flow fan blade - Google Patents
Air conditioner and its through-flow fan blade Download PDFInfo
- Publication number
- CN104747493B CN104747493B CN201310737226.5A CN201310737226A CN104747493B CN 104747493 B CN104747493 B CN 104747493B CN 201310737226 A CN201310737226 A CN 201310737226A CN 104747493 B CN104747493 B CN 104747493B
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- fan blade
- flow fan
- middle section
- error angle
- blade
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
- F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
- F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
- F04D29/282—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers the leading edge of each vane being substantially parallel to the rotation axis
- F04D29/283—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers the leading edge of each vane being substantially parallel to the rotation axis rotors of the squirrel-cage type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/666—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by means of rotor construction or layout, e.g. unequal distribution of blades or vanes
Abstract
The invention provides a kind of through-flow fan blade, including coaxially connected multiple middle section fan blades, error angle is provided with two of arbitrary neighborhood between section fan blade, the offset direction reversed arrangement at least one set of adjacent middle section fan blade with error angle between the blade of same structure.By the offset direction of error angle between section fan blade in one group in through-flow fan blade, it is arranged to the direction opposite with former offset direction, so that after blade of the middle section fan blade of through-flow fan blade on same bus position offsets the bus, offset and reply to bus position, so that mutually isostructural blade is distributed in through-flow fan blade length direction close to the bus of through-flow fan blade on through-flow fan blade, so as to solve the problems, such as that through-flow fan blade is uneven in the air-out of same bus position to a certain extent, improve indoor set air-out uniformity, also so that the air-flow for blowing to snail tongue avoids the non-stable abnormal sound of product, improve the tonequality of indoor set.Present invention also offers a kind of air conditioner.
Description
Technical field
The present invention relates to air conditioner technical field, more specifically to a kind of air conditioner and its through-flow fan blade.
Background technology
Existing air conditioner structure is as shown in figure 1, Fig. 1 is the internal structure schematic diagram of air conditioner in the prior art, through-flow wind
Gap area between leaf 1` and snail tongue 2` determines the air quantity and noiseproof feature of air conditioner, and through-flow fan blade 1` is by 35 blade groups
Into the angle between every two neighboring blade is not mutually equal, and in Fig. 1, included angle A, included angle B and angle C, is referred to respectively adjacent
Angle between blade, its angle angle is different, therefore, during through-flow fan blade 1` rotary courses between each blade and snail tongue
Rotatable phase.
As shown in Fig. 2 Fig. 2 is the structural representation of through-flow fan blade in the prior art.Through-flow fan blade 1` is by several
Section fan blade 3` is welded to form, using the error angle of fixation, including same error angle size and identical when being welded between each section
Direction of rotation, through-flow fan blade 1` same blade 4` is on fan blade length direction, along identical deviation angle 5 and skew side
Arranged in constant slope, its distributed architecture is similar to oblique " one " font, such as distributed architecture 6` in Fig. 2, due to through-flow fan blade 1`
Gradient arrangement between blade 4` and through-flow fan blade 1` mutually isostructural in the longitudinal direction bus 7, causes indoor set air-out
The air-flow of mouth direction on the same bus 7` of through-flow fan blade is different, and air flow method size is in heterogeneity, and is directed towards air-out
The both sides of mouth, so as to produce non-stable extraordinary noise.
Therefore, noise problem caused by how solving through-flow fan blade air outlet air-flow, be current those skilled in the art urgently
The problem of to be solved.
The content of the invention
In view of this, the invention provides a kind of through-flow fan blade, solved to realize caused by through-flow fan blade air outlet air-flow
Noise problem；Present invention also offers a kind of air conditioner.
In order to achieve the above object, the present invention provides following technical scheme：
A kind of through-flow fan blade, including coaxially connected multiple middle section fan blades, two of arbitrary neighborhood middle section fan blades it
Between be provided with error angle, there is the inclined of error angle between the blade of same structure at least one set of adjacent middle section fan blade
Move direction reversed arrangement.
Preferably, in two middle section fan blades of above-mentioned arbitrary neighborhood（2）Between the size of error angle that sets not
Together, and arbitrary neighborhood two middle section fan blades（2）Between error angle offset direction it is opposite.
Preferably, in above-mentioned through-flow fan blade, being misplaced according to first between two middle section fan blades of arbitrary neighborhood
The offset direction of angle and the second error angle interlaced arrangement, first error angle and second error angle is opposite.
Preferably, in above-mentioned through-flow fan blade, the angular range of first error angle is 1 ° -10 °, second dislocation
The angular range at angle is 1 ° -10 °.
Preferably, in above-mentioned through-flow fan blade, first error angle is identical with the angle of second error angle, each
The blade for having same structure on the middle section fan blade is arranged symmetrically along it with the point midway that the bus of through-flow fan blade intersects.
Preferably, in above-mentioned through-flow fan blade, the through-flow fan blade includes comprising at least the 5 section middle section fan blades, described
The each middle section fan blade in rear portion of through-flow fan blade shifts to install compared to section fan blade in first segment.
Preferably, in above-mentioned through-flow fan blade, the through-flow fan blade includes the 7 section middle section fan blades of affixed connection.
Preferably, in above-mentioned through-flow fan blade, the anterior each middle section fan blade of multiple middle section fan blades is wrong according to the 3rd
Parallactic angle is offset in the first direction, and each middle section fan blade in rear portion of multiple middle section fan blades is according to the 4th error angle edge and first party
Offset to opposite second direction.
Preferably, in above-mentioned through-flow fan blade, the angular range of the 3rd error angle is 1 ° -10 °, the 4th dislocation
The angular range at angle is 1 ° -10 °.
Preferably, in above-mentioned through-flow fan blade, the 3rd error angle is identical with the angle of the 4th error angle.
Preferably, in above-mentioned through-flow fan blade, each middle section wind at anterior each middle section fan blade and rear portion
Error angle commutates after leaf connects at middle part.
A kind of air conditioner, including air conditioner body and the through-flow fan blade being arranged in the air conditioner body, the through-flow
Fan blade is the as above through-flow fan blade described in any one.
Through-flow fan blade provided by the invention, including coaxially connected multiple middle section fan blades, wind is saved in two of arbitrary neighborhood
It is provided with error angle between leaf, there is the inclined of error angle between the blade of same structure at least one set of adjacent middle section fan blade
Move direction reversed arrangement.Through-flow fan blade is welded to form by multiple middle section fan blades, fan blade will be saved in two of arbitrary neighborhood and be set mistake
Parallactic angle is arranged, meets the production requirement of through-flow fan blade.By the skew of error angle between section fan blade in one group in through-flow fan blade
Direction, it is arranged to the direction opposite with former offset direction so that leaf of the middle section fan blade of through-flow fan blade on same bus position
After piece offsets the bus, replied to the skew of bus position, generally so that saving identical structure on fan blade in each on through-flow fan blade
Blade in the distribution of through-flow fan blade length direction, the bus close to through-flow fan blade is distributed, so as to solving through-flow to a certain extent
Fan blade improves indoor set air-out uniformity the air-out of same bus position is uneven the problem of, also causes the air-flow for blowing to snail tongue
The non-stable abnormal sound of product is avoided, improves the tonequality of indoor set.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the internal structure schematic diagram of air conditioner in the prior art；
Fig. 2 is the structural representation of through-flow fan blade in the prior art；
Fig. 3 is that the blade first of through-flow fan blade provided by the invention preferably offsets structural representation；
Fig. 4 is that the blade second of through-flow fan blade provided by the invention preferably offsets structural representation；
Fig. 5 is the existing air conditioner and this case air conditioner air outlet velocity distribution map drawn according to the data of table 1；
Fig. 6 is the noise profile figure under the different wind speed of existing air conditioner and the air conditioner of this case offer.
Embodiment
The invention discloses a kind of through-flow fan blade, solves noise problem caused by through-flow fan blade air outlet air-flow；This hair
It is bright to additionally provide a kind of air conditioner.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Whole description, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiments of the invention, the every other reality that those of ordinary skill in the art are obtained under the premise of creative work is not made
Example is applied, belongs to the scope of protection of the invention.
As shown in figure 3, the blade first that Fig. 3 is through-flow fan blade provided by the invention preferably offsets structural representation.
The invention provides a kind of through-flow fan blade, including coaxially connected multiple middle section fan blades 2, in two of arbitrary neighborhood
Error angle is provided between section fan blade 2, there is mistake between the blade 3 of same structure at least one set of adjacent middle section fan blade 2
The offset direction reversed arrangement of parallactic angle.Through-flow fan blade 1 is welded to form by multiple middle section fan blades 2, will be saved in two of arbitrary neighborhood
Fan blade 2 sets error angle to arrange, meets the production requirement of through-flow fan blade 1.By in one group in through-flow fan blade 1 save fan blade 2 it
Between error angle offset direction, be arranged to the direction opposite with former offset direction so that the middle section fan blade of through-flow fan blade is same
After blade on bus position offsets the bus, offset and reply to bus position, generally cause each middle on through-flow fan blade 1 save
Mutually isostructural blade 3 is on through-flow fan blade length direction on fan blade 2, and the bus close to through-flow fan blade 1 is distributed, so as to certain journey
Solve the problems, such as that through-flow fan blade is uneven in the air-out of same bus position on degree, improve indoor set air-out uniformity, also to blow
The non-stable abnormal sound of product is avoided to the air-flow of snail tongue, improves the tonequality of indoor set.
In a specific embodiment of the invention, the size of the error angle set between fan blade 2 is saved in two of arbitrary neighborhood
It is different, and the offset direction of error angle is opposite between section fan blade in two of arbitrary neighborhood.Through-flow fan blade 1 is in its length direction
On each middle section fan blade 1 be respectively provided with error angle in affixed welding process, by set it is each in section fan blade 2 error angle it is equal
It is different so that the distribution form of the blade of same structure in its longitudinal direction is in meander line structure on through-flow fan blade 1, is set simultaneously
The offset direction of error angle is different between adjacent middle section fan blade 1, then on through-flow fan blade 1 blade of same structure in through-flow wind
The bus both sides of leaf 1 are back and forth offset, so as to improve the air-out uniformity on 1 same bus of through-flow fan blade.
Saved in an of the invention specific embodiment, in two of arbitrary neighborhood between fan blade 2 according to the He of the first error angle 4
The offset direction of the interlaced arrangement of second error angle 5, the first error angle 4 and the second error angle 5 is opposite.In multiple on through-flow fan blade
Save fan blade 2, by by two of arbitrary neighborhood save fan blade 2 according to opposite error angle interlaced arrangement so that through-flow fan blade
The blade 3 of upper same structure is interspersed in the both sides of the bus of through-flow fan blade, further increases the equal of through-flow fan blade air-out
Even property.
Specifically, the angular range of the first error angle 4 is 1 ° -10 °, and the angular range of the second error angle 5 is 1 ° -10 °.The
The offset direction of one error angle 4 and the second error angle 5 has both met in through-flow fan blade 1 on the contrary, the two is respectively provided with an angular range
The dislocation arrangement requirement of middle section fan blade 2, also improves the requirement to the air draft flow distribution evenness of through-flow fan blade 1.
Preferably, the first error angle 4 is identical with the angle of the second error angle 5, and being saved in each on fan blade 2 has same structure
Blade 3 be arranged symmetrically along it with the point midway that the bus of through-flow fan blade 1 intersects.The blade 3 of same structure on through-flow fan blade 1
On the length direction of through-flow fan blade 1, its placement location and the bus of through-flow fan blade 1, during the bus is now dislocatedly distributed for blade 3
Line, a midpoint being arranged symmetrically be present, the air-flow of the through-flow fan blade discharge through the structure is discharged on through-flow fan blade length direction
Direction is located in predetermined scope, and wind speed profile is more uniform, the lower noise in the case of equal air quantity.
In a specific embodiment of the invention, through-flow fan blade 1 includes saving fan blade at least 5 sections, in the rear portion of through-flow fan blade 1
Section fan blade 2 shifts to install compared to section fan blade in first segment.Preferably, through-flow fan blade 1 includes saving during fan blade 2,7 saves in 7 sections and saved
The each middle section fan blade in the rear portion of fan blade 2 shifts to install compared to section fan blade in first segment.To save the position where fan blade in first segment
For basic point, for follow-up each middle section fan blade compared to fan blade dislocation arrangement is saved in first segment, the off-set construction of middle section fan blade is in W types
Structure distribution.
Certainly, through-flow fan blade fan blade can use the multi-section structures such as 5 sections, 7 sections or 10 sections, to adapt to the work of different air conditioners
It is required.
In a specific embodiment of the invention, the anterior each middle section fan blade 2 of multiple middle section fan blades 2 is according to the 3rd error angle
6 offset in the first direction, it is multiple it is middle section fan blades 2 rear portion it is each it is middle section fan blades 2 according to the 4th error angle 7 along with first direction phase
Anti- second direction skew.
As shown in figure 4, the blade second that Fig. 4 is through-flow fan blade provided by the invention preferably offsets structural representation.
Present embodiments provide in second save fan blade dislocation arrangement mode, by the middle section fan blade 2 of through-flow fan blade 1 according to
Front and back position is divided into front portion structure and rear structure, and anterior multiple middle section fan blades 2 enter line displacement cloth according to the 3rd error angle 6
Put, the middle section fan blade at rear portion is arranged at the rear portion of through-flow fan blade 1 according to the 4th error angle 7 in opposite direction so that through-flow fan blade 1
The blade 2 of upper same structure first offsets the bus distribution of through-flow fan blade, and after the commutation of the offset direction of middle part blade, blade returns
To bus position, so as to avoid through-flow fan blade according to the distributed architecture away from bus always, wind direction is improved, air-out is equal
It is even, so that the air-flow of through-flow fan blade front and rear part discharge and snail tongue negotiation phase cross-over change, reduce noise peak, reduction is made an uproar
Sound.
Specifically, the angular range of the 3rd error angle 6 is 1 ° -10 °, and the angular range of the 4th error angle 7 is 1 ° -10 °.It is excellent
Selection of land, the 3rd error angle 6 are identical with the angle of the 4th error angle 7.It is easily achieved the arrangement of centering section fan blade misconstruction.
In a specific embodiment of the invention, each middle section fan blade at anterior each middle section fan blade and rear portion is in middle part phase
Connect rear error angle commutation.Through-flow fan blade includes saving fan blade in 7, on the length direction of through-flow fan blade, through-flow fan blade is anterior
4 in save fan blade same deviation angle, the deviation angles of 3 setting reversed arrangements at rear portion, the distribution form of blade be set
V-shaped distributed architecture, reduce noise.
Certainly, the distribution form of blade is not limited to the distributed architecture of above-mentioned W types and V-type, by will on through-flow fan blade it is same
The blade stagger arrangement of one structure, the dislocation connection of middle section fan blade can be set different broken line distributed architectures, to improve air-out
Uniformity, improve noise acoustical quality.
For the improvement of above-mentioned through-flow fan blade structure, this case is to the air outlet velocity of former air conditioner and using provided by the invention
The air outlet velocity of the air conditioner of through-flow fan blade is acquired and contrasted, and comparing result is as shown in table 1.
Table 1 is the data comparison table of the air outlet velocity of former air conditioner and the air-conditioning of this case offer
| Outlet port | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
| Former air outlet velocity（m/s） | 2.03 | 3.1 | 3.5 | 4.0 | 4.3 | 4.3 | 3.2 | 4.5 | 3.7 |
| Existing air outlet velocity（m/s） | 3.7 | 4.5 | 4 | 4.2 | 4.5 | 4.4 | 3.8 | 4.3 | 4.3 |
| Outlet port | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 |
| Former air outlet velocity（m/s） | 4.6 | 3.7 | 3.0 | 4.9 | 4.2 | 3.7 | 5.0 | 3.5 | 4.6 |
| Existing air outlet velocity（m/s） | 4.3 | 3.9 | 4 | 4.5 | 3.9 | 4.3 | 5 | 4.1 | 4.3 |
| Outlet port | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 |
| Former air outlet velocity（m/s） | 5.0 | 3.5 | 4.9 | 4.0 | 3.6 | 4.0 | 4.8 | 4.0 | 3.1 |
| Existing air outlet velocity（m/s） | 4.6 | 4.2 | 4.5 | 4.6 | 4 | 4.1 | 4.6 | 4.2 | 3.8 |
As shown in figure 5, Fig. 5 is the existing air conditioner and this case air conditioner air outlet velocity distribution map drawn according to the data of table 1；
As shown in fig. 6, Fig. 6 is the noise profile figure under the different wind speed of existing air conditioner and the air conditioner of this case offer.
Chart with reference to shown in the data and Fig. 5 for the air outlet velocity that table 1 gathers shows that air outlet wind speed curve 8 is existing
The wind speed profile curve of air conditioner wind outlet in technology, wind speed curve 9 is provides going out for the air conditioner of through-flow fan blade with this case
Air port wind speed profile curve, it can be seen that the through-flow fan blade that existing air-conditioning uses causes the excursion of air outlet velocity 8 to compare
Greatly, the distribution of air outlet velocity 8 is in inhomogeneities.And after through-flow fan blade of the air conditioner that this case provides using this case offer, outlet
The wind speed of wind speed 9 different air outlet positions wind speed profile in certain scope, the distribution of air outlet velocity 9 is more equal
It is even.
Because the uniformity of air conditioner wind outlet has an impact to the noise level of air conditioner, due to the through-flow wind of this case offer
Leaf causes air conditioner air-out wind speed to be arranged in different air outlets in uniformity so that air conditioner 1 decibel of lower noise on the whole
More than, improve noise acoustical quality.
Specifically as shown in chart Fig. 6, noise profile curve 10 is the distribution curve of noise in the prior art, and noise is distributed bent
Line 11 is the noise distribution curve of the air conditioner of the through-flow fan blade with this case.As seen from Figure 6, with the increase of air quantity,
Noise caused by the air conditioner that the air conditioner of prior art and this case provide all increases therewith, and the through-flow wind for using this case to provide
The air conditioner of leaf, the caused more former air conditioner of noise is low in the case of same air quantity, therefore the through-flow fan blade that this case provides has
The noise for reducing air conditioner of effect.
Based on the through-flow fan blade provided in above-described embodiment, present invention also offers a kind of air conditioner, including air conditioner sheet
Body and the through-flow fan blade being arranged in the air conditioner body, the through-flow fan blade that the air conditioner is provided with are to be carried in above-described embodiment
The through-flow fan blade of confession.
Because the air conditioner employs the through-flow fan blade of above-described embodiment, so the air conditioner is had by what through-flow fan blade was brought
Beneficial effect refer to above-described embodiment.
Each embodiment is described by the way of progressive in this specification, what each embodiment stressed be and other
The difference of embodiment, between each embodiment identical similar portion mutually referring to.
The foregoing description of the disclosed embodiments, professional and technical personnel in the field are enable to realize or using the present invention.
A variety of modifications to these embodiments will be apparent for those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, it is of the invention
The embodiments shown herein is not intended to be limited to, and is to fit to and principles disclosed herein and features of novelty phase one
The most wide scope caused.
Claims (7)
1. a kind of through-flow fan blade, including coaxially connected multiple middle section fan blades (2), it is characterised in that two institutes of arbitrary neighborhood
State and be provided with error angle between section fan blade (2), there is same structure at least one set of adjacent middle section fan blade (2)
The offset direction reversed arrangement of error angle between blade；
The size of the error angle set between two middle section fan blades (2) of arbitrary neighborhood is different, and the two of arbitrary neighborhood
The offset direction of error angle is opposite between the individual middle section fan blade (2).
2. through-flow fan blade according to claim 1, it is characterised in that two of arbitrary neighborhood middle section fan blades (2) it
Between according to the first error angle (4) and the second error angle (5) interlaced arrangement, first error angle (4) and second dislocation
The offset direction at angle (5) is opposite.
3. through-flow fan blade according to claim 2, it is characterised in that the angular range of first error angle (4) be 1 °-
10 °, the angular range of second error angle (5) is 1 ° -10 °.
4. through-flow fan blade according to claim 1, it is characterised in that the through-flow fan blade (1) includes comprising at least 5 section institutes
Middle section fan blade is stated, each middle section fan blade in rear portion of the through-flow fan blade shifts to install compared to section fan blade in first segment.
5. through-flow fan blade according to claim 4, it is characterised in that the through-flow fan blade (1) includes 7 sections of affixed connection
The middle section fan blade.
6. through-flow fan blade according to claim 1, it is characterised in that anterior each middle section fan blade and rear portion it is each
Error angle commutates after the individual middle section fan blade connects at middle part.
7. a kind of air conditioner, including air conditioner body and the through-flow fan blade that is arranged in the air conditioner body, it is characterised in that
The through-flow fan blade is through-flow fan blade as claimed in any one of claims 1 to 6.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310737226.5A CN104747493B (en) | 2013-12-26 | 2013-12-26 | Air conditioner and its through-flow fan blade |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310737226.5A CN104747493B (en) | 2013-12-26 | 2013-12-26 | Air conditioner and its through-flow fan blade |
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| CN104747493A CN104747493A (en) | 2015-07-01 |
| CN104747493B true CN104747493B (en) | 2018-01-02 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7187140B2 (en) * | 2017-08-03 | 2022-12-12 | 三菱重工サーマルシステムズ株式会社 | Tangential fan and air conditioner |
| CN108088057A (en) * | 2018-01-05 | 2018-05-29 | 奥克斯空调股份有限公司 | A kind of rectification air passage and air conditioner |
| CN111536589B (en) * | 2020-05-19 | 2022-03-01 | 宁波奥克斯电气股份有限公司 | Dust removal control method, dust removal control device and air conditioner |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6034984A (en) * | 1998-08-28 | 2000-03-07 | Cymer, Inc. | Tangential fan with cutoff assembly and vibration control for electric discharge laser |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2314131Y (en) * | 1997-07-08 | 1999-04-14 | 广东美的集团股份有限公司 | Axial fan of air conditioner |
| CN2405047Y (en) * | 1999-12-21 | 2000-11-08 | 高炎康 | Tubular air fan for air conditioner |
| US6765946B2 (en) * | 2000-01-25 | 2004-07-20 | Cymer, Inc. | Fan for gas discharge laser |
| CN202301166U (en) * | 2011-10-20 | 2012-07-04 | 中国科学院光电研究院 | Cross-flow fan impeller |
| CN203627301U (en) * | 2013-12-26 | 2014-06-04 | 珠海格力电器股份有限公司 | Air conditioner and cross-flow fan blade thereof |
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2013
- 2013-12-26 CN CN201310737226.5A patent/CN104747493B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6034984A (en) * | 1998-08-28 | 2000-03-07 | Cymer, Inc. | Tangential fan with cutoff assembly and vibration control for electric discharge laser |
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