CN110410880A - A kind of trailing edge is in the air-conditioner outdoor unit of microcellular structure - Google Patents
A kind of trailing edge is in the air-conditioner outdoor unit of microcellular structure Download PDFInfo
- Publication number
- CN110410880A CN110410880A CN201910808185.1A CN201910808185A CN110410880A CN 110410880 A CN110410880 A CN 110410880A CN 201910808185 A CN201910808185 A CN 201910808185A CN 110410880 A CN110410880 A CN 110410880A
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- air
- outdoor unit
- conditioner outdoor
- impeller
- trailing edge
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- 239000012530 fluid Substances 0.000 claims abstract description 7
- 238000005192 partition Methods 0.000 claims abstract description 7
- 239000011148 porous material Substances 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 3
- 239000003507 refrigerant Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 9
- 238000013461 design Methods 0.000 abstract description 6
- 235000011389 fruit/vegetable juice Nutrition 0.000 abstract description 2
- 230000010354 integration Effects 0.000 abstract description 2
- 238000004378 air conditioning Methods 0.000 description 6
- 238000011160 research Methods 0.000 description 6
- 238000007634 remodeling Methods 0.000 description 5
- 238000004364 calculation method Methods 0.000 description 4
- 238000004088 simulation Methods 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 208000016285 Movement disease Diseases 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 210000001124 body fluid Anatomy 0.000 description 1
- 239000010839 body fluid Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 238000013316 zoning Methods 0.000 description 1
Classifications
-
- 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
- F04D29/32—Rotors specially for elastic fluids for axial flow pumps
- F04D29/38—Blades
-
- 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
- F04D29/663—Sound attenuation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
- F24F1/40—Vibration or noise prevention at outdoor units
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/24—Means for preventing or suppressing noise
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/24—Means for preventing or suppressing noise
- F24F2013/247—Active noise-suppression
Abstract
The present invention relates to the technical fields of air-conditioner outdoor unit energy-saving and noise-reducing, more particularly to a kind of trailing edge is in the air-conditioner outdoor unit of microcellular structure, it is characterised in that it includes trailing edge is in impeller, heat exchanger, pod, electric machine support, middle partition, Air outlet net, condenser, fluid reservoir, the flow controller, compressor of microcellular structure.A kind of rear provided by the invention is in the air-conditioner outdoor unit of microcellular structure, and in air-conditioner outdoor unit impeller blade rear aperture, microcellular structure is presented; design improved to trailing edge structure under the premise of not increasing cost, simple process, expense is low; juice is set convenient for integration, is produced on a large scale.Simultaneously, under the premise of the other component overall performance of guarantee air-conditioner outdoor unit is constant, improve air-conditioner outdoor unit exit velocity, reduce air-conditioner outdoor unit aerodynamic noise, reduce the flow losses of air-conditioner outdoor unit, the intrinsic frequency for improving air-conditioner outdoor unit impeller, improves the efficiency of air-conditioner outdoor unit, increases air-conditioner outdoor unit service life.
Description
Technical field
It is in microcellular structure the present invention relates to the technical field of air-conditioner outdoor unit energy-saving and noise-reducing more particularly to a kind of impeller rear
Air-conditioner outdoor unit.
Background technique
With the progress of society and the development of science and technology, people's lives leveling qualities significantly improve, air-conditioning is not re-used as one
Kind luxury goods household electrical appliance, have progressed among ordinary family, thus people's lives mode also starts to change, throughout the year
It is cool in summer and warm in winter.But indoor bring comfortably with facilitating while, also to outdoor propagation noise, these noises not only be will affect
To indoor user, self sense is reduced, the environment of surrounding but will be influenced, it is tired in life and work to give other people
It disturbs, reduces other people happiness.Moreover, noise originally becomes a big key factor of municipal pollution, and outside air conditioning chamber
The noise of machine is also used as a part in noise pollution source, to this it is desirable to be paid attention in terms of air-conditioning noise reduction, this also at
A much progress for air-conditioning manufacturing requires and huge challenge.
In terms of the flow losses and aerodynamic noise for reducing air-conditioner outdoor unit, the research contents for improving pneumatic efficiency, the world
The researcher of various regions is proposed different research methods, and wherein the method for experimental method and numerical simulation is probed into outside air conditioning chamber
The main method of machine aerodynamic noise.Such as using numerical simulation research method research air-conditioner outdoor unit aerodynamic noise trend and
The mode that experimental method combines is verified, and is a kind of research method of worth reference.Remodeling is by optimization blade wheel structure ginseng
It counts and designs new impeller to change air-conditioner outdoor unit aerodynamic characteristic, to reduce air-conditioner outdoor unit aerodynamic noise, but change leaf
Wheel construction parameter and the new impeller of design can all change air-conditioner outdoor unit blade wheel structure kinetic characteristics, problem made to become complicated, make
Influence factor increases, and it is difficult to increase research.
In the energy loss of air-conditioner outdoor unit, flow losses are to influence one of the principal element of its drafting efficiency.Due to
There are gaps between impeller and air-conditioner outdoor unit single-piece frame, in impeller normal rotation, so that impeller rotary area forms disorder
Vortex, to cause flow losses.To reduce the flow losses because of caused by impeller rotation, domestic and international researcher passes through to air-conditioning
The blade of outdoor unit retrofits and then probes into air-conditioner outdoor unit in the mobile performance of impeller rotary area, has obtained trailing edge aperture
Afterwards, air-conditioner outdoor unit internal vortex disturbance state is improved, and the hole shape of air-conditioner outdoor unit trailing edge and aperture are big
It is small, all directly affect the drafting efficiency and aerodynamic noise of air-conditioner outdoor unit.
A kind of trailing edge provided by the invention is in the air-conditioner outdoor unit of microcellular structure, is not changing the whole of air-conditioner outdoor unit
In the case where body internal structure, by carrying out Transform Type design to impeller blade trailing edge formations, pneumatically making an uproar for air-conditioner outdoor unit is reduced
Sound improves drafting efficiency, improves the stress condition of blade, reduces the degree of fatigue of blade, improves consolidating for air-conditioner outdoor unit impeller
There is frequency, increase the service life of air-conditioner outdoor unit, opposite design experiences and theory are provided for the work of air-conditioner outdoor unit noise reduction
Experience.
Summary of the invention
Air-conditioner outdoor unit provided by the invention, the aperture at impeller blade rear make trailing edge structure change, present micro-
Pore structure is set in the case where not changing the whole interior structure of air-conditioner outdoor unit by carrying out remodeling to trailing edge structure
Meter reduces the aerodynamic noise of air-conditioner outdoor unit, improves drafting efficiency, improves the stress condition of blade, reduce the tired journey of blade
Degree improves the intrinsic frequency of air-conditioner outdoor unit impeller, increases the service life of air-conditioner outdoor unit.
A kind of trailing edge provided by the invention is in the air-conditioner outdoor unit of microcellular structure, including impeller body, impeller body
Trailing edge position have microcellular structure.
A kind of air-conditioner outdoor unit provided by the invention is in impeller, heat exchanger, the water conservancy diversion of microcellular structure including trailing edge
Cover, electric machine support, middle partition, Air outlet net, condenser, fluid reservoir, flow controller, compressor etc..Wherein heat exchanger, pod,
Electric machine support, middle partition and Air outlet net successively constitute the ducting system of air-conditioner outdoor unit, and wherein rear is in the leaf of microcellular structure
Piece is separately fixed at composition air-conditioner outdoor unit impeller, air-conditioner outdoor unit impeller on impeller and is located at air-conditioner outdoor unit ducting system body
Interior, the condenser, flow controller, is located in air-conditioner outdoor unit body fluid reservoir, and the compressor is in air conditioner refrigerating process
Middle driving refrigerant.
A kind of trailing edge provided by the invention is in the air-conditioner outdoor unit of microcellular structure, after air-conditioner outdoor unit impeller blade
Aperture at edge, makes trailing edge structure change, and microcellular structure is presented, under the premise of not increasing cost to trailing edge structure into
Row Transform Type design, simple process, expense is low, sets juice convenient for integration, is produced on a large scale.Meanwhile guaranteeing air-conditioner outdoor unit
Under the premise of other position performances are constant, air-conditioner outdoor unit aerodynamic noise is reduced, drafting efficiency is improved, reduces the tired journey of blade
Degree improves the intrinsic frequency of air-conditioner outdoor unit impeller, improves the efficiency of air-conditioner outdoor unit, and increase air-conditioner outdoor unit uses the longevity
Life.
Detailed description of the invention
Illustrate the specific embodiment of the invention or technical solution in the prior art in order to clearer, it below will be to specific
Embodiment or attached drawing needed to be used in the description of the prior art do simple introduction, it should be apparent that, it is described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is the air-conditioner outdoor unit impeller schematic diagram that trailing edge provided in an embodiment of the present invention is in microcellular structure；
Fig. 2 is signal of the trailing edge provided in an embodiment of the present invention in the air-conditioner outdoor unit blade microcellular structure of microcellular structure
Figure；
Fig. 3 is air-conditioner outdoor unit impeller rotary area noise calculation point arrangement schematic diagram provided in an embodiment of the present invention；
Fig. 4 is the most loud of air-conditioner outdoor unit impeller rotary area noise before and after trailing edge provided in an embodiment of the present invention is retrofited
The change curve arbitrarily downgraded when away from the section center of circle (i.e. hub centre axis) different distance.
Specific embodiment
Technical solution of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that the embodiment retouched
It is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people
Member's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that unless there are specific regulation and limit, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be fixedly connected, can also can dismantling connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected: can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
As depicted in figs. 1 and 2, a kind of trailing edge provided by the invention is in the air-conditioner outdoor unit of microcellular structure, including leaf
Ontology is taken turns, the trailing edge part of impeller body has micropore, and trailing edge includes that micropore is straight in the geometric parameter of microcellular structure
Diameter R, micropore center of circle spacing a, micropore distance of center circle blade edge distance b, wherein R=3mm, a=10mm, b=10mm.
A kind of air-conditioner outdoor unit provided by the invention is in impeller, heat exchanger, the water conservancy diversion of microcellular structure including trailing edge
Cover, electric machine support, middle partition, Air outlet net, condenser, fluid reservoir, flow controller, compressor etc..Wherein heat exchanger, pod,
Electric machine support, middle partition and Air outlet net successively constitute the ducting system of air-conditioner outdoor unit, and wherein rear is in the leaf of microcellular structure
Piece is separately fixed at composition air-conditioner outdoor unit impeller, the air-conditioner outdoor unit impeller on impeller and is located at air-conditioner outdoor unit ducting system
In vivo, the condenser, fluid reservoir, flow controller, be located in air-conditioner outdoor unit body, compressor is during air conditioner refrigerating
Drive refrigerant.
In order to accurately calculate trailing edge not aperture and trailing edge in the inside basin of the air-conditioner outdoor unit of microcellular structure
Vorticity variation and impeller rotary area aerodynamic noise variation characteristic, using FW-H acoustic model to air-conditioner outdoor unit rotary area
Radially 6 calculating points carry out numerical analysis, and specific noise calculation point arrangement is as shown in Figure 3.Its zoning 3-D walls and floor
It is defined as, using air-conditioner outdoor unit impeller rotary area center as coordinate origin, outlet axes direction is Z axis positive direction, with excessively former
The radial direction orthogonal two-by-two of point is respectively X, Y-axis, and establishes coordinate system to be directed toward direction of air outlet as positive direction, noise meter
It is section (Z=0mm) that the Z axis for calculating section, which takes three coordinate positions, takes 6 noises respectively in the radial direction, that is, Y direction in section
Point is calculated, its axial coordinate of Y is respectively 80mm, 100mm, 120mm, 140mm, 160mm, 180mm.
In the present embodiment, designed rear pore size be micro-pore diameter R=3mm, micropore center of circle spacing a=10mm,
Micropore distance of center circle blade edge distance b=10mm, and compared with impeller blade of not retrofiting.It is rated speed in wheel speed
When 820 r/min, analysis impeller rotary area is calculated using large eddy simulation and is not retrofited with trailing edge in blade in microcellular structure
When air-conditioner outdoor unit inside basin vorticity variation, the vorticity value of the outdoor unit impeller rotary area that blade is not retrofited is 232.5
s-1, trailing edge is 213.3s in the vorticity value of the outdoor unit impeller rotary area of microcellular structure-1, vorticity has dropped 8.26%.
It follows that trailing edge can effectively break up the vorticity of air-conditioner outdoor unit impeller rotary area in microcellular structure, after blade
The phenomenon that edge reduces the vorticity in impeller internal basin in microcellular structure, movement disorder is improved, and energy loss is dropped
It is low, the efficiency of air-conditioner outdoor unit is improved, ventilation blower service life is extended.
In the present embodiment, impeller is at same nominal revolving speed 820r/min, respectively to not retrofiting and trailing edge is in micro-
The noise pattern of the noise calculation point of the air-conditioner outdoor unit impeller rotary area of pore structure is analyzed, air-conditioner outdoor unit impeller
The aerodynamic noise of rotary area is mainly made of the rotation fundamental frequency and harmonic wave of impeller, vortex shedding frequence, wherein maximum sound pressure
Frequency corresponding to grade is the rotation fundamental frequency 40.04Hz of impeller.From fig. 4, it can be seen that analyzing the noise spectrum of each noise measuring point
Figure is obtained each maximum sound pressure level for calculating noise at point, (is rotated with Y axis coordinate value, that is, noise calculation point away from the section center of circle
Central axis) distance be abscissa, calculating maximum sound pressure level a little is ordinate, and it is in micropore that comparison, which is not retrofited with trailing edge,
The noise maximum sound pressure level change curve of structure is it is found that trailing edge is obviously reduced in the sound pressure level of microcellular structure, in distance wheel
At the 80mm of hub center, trailing edge is 101.9dB in the maximum sound pressure level of microcellular structure, and the maximum sound pressure level that blade is not retrofited is
102.1dB；At hub centre 100mm, trailing edge is 107.8dB in the maximum sound pressure level of microcellular structure, and blade is not
The maximum sound pressure level of remodeling is 108.6dB；At hub centre 120mm, trailing edge is in the maximum sound pressure of microcellular structure
Grade is 107.5dB, and the maximum sound pressure level that blade is not retrofited is 108.3dB；At hub centre 140mm, trailing edge is in
The maximum sound pressure level of microcellular structure is 107.3dB, and the maximum sound pressure level that blade is not retrofited is 108.8dB；Apart from hub centre
At 160mm, trailing edge is 105.6dB in the maximum sound pressure level of microcellular structure, and the maximum sound pressure level that blade is not retrofited is
108.2dB；At hub centre 180mm, trailing edge is 101.7dB in the maximum sound pressure level of microcellular structure, and blade is not
The maximum sound pressure level of remodeling is 103.8dB；Trailing edge is averagely reduced in microcellular structure than the noise that blade is not retrofited
1.24%。
In the present embodiment, under the excitation of the exciting force of 10N, test discovery trailing edge is in the impeller ratio of microcellular structure
Each rank intrinsic frequency for the impeller that blade is not retrofited increased, wherein trailing edge is in the impeller of microcellular structure in single order
Intrinsic frequency is 43.2Hz, and the impeller intrinsic frequency that blade is not retrofited is 40.56Hz, and intrinsic frequency improves 6.5%；In second order
When, trailing edge is 43.23Hz in the impeller intrinsic frequency of microcellular structure, and the impeller intrinsic frequency that blade is not retrofited is
42.71Hz, intrinsic frequency improve 1.2%；In three ranks, trailing edge is in the impeller intrinsic frequency of microcellular structure
61.77Hz, the impeller intrinsic frequency that blade is not retrofited are 59.56Hz, and intrinsic frequency improves 3.7%；In quadravalence, trailing edge
Impeller intrinsic frequency in microcellular structure is 64.88Hz, and the impeller intrinsic frequency that blade is not retrofited is 61.72Hz, intrinsic frequency
Improve 5.11%.In this formula with Natural Frequency of Blade leaf quality reduce will lead to blade rise intrinsic frequency increase this
Conclusion is consistent.
By the remodeling to trailing edge structure, trailing edge provided by the invention is in the air-conditioner outdoor unit of microcellular structure,
Under the premise of taking into account air-conditioner outdoor unit other component performance, reduce in the aerodynamic noise and air-conditioner outdoor unit of air-conditioner outdoor unit
Portion's fluid improves the stress condition of blade and the turbulent shape of air-conditioner outdoor unit internal flow because of flow losses caused by being vortexed
State reduces the degree of fatigue of blade, improves the intrinsic frequency of air-conditioner outdoor unit impeller, and extend air-conditioner outdoor unit uses the longevity
Life.
Finally, it should be noted that the above various embodiments is only used to illustrate the technical scheme of the present invention, rather than its limitations；To the greatest extent
Invention is explained in detail referring to aforementioned symbol embodiment for pipe, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (2)
1. the air-conditioner outdoor unit that a kind of trailing edge is in microcellular structure, which is characterized in that including blade body, the leaf of impeller body
Piece rear position has micropore；
The trailing edge pore size is micro-pore diameter R=3mm, micropore center of circle spacing a=10mm, micropore distance of center circle blade edge
Distance b=10mm；
The air-conditioner outdoor unit averagely reduces 8.26% than the air-conditioner outdoor unit impeller rotary area vorticity that blade is not retrofited；
The air-conditioner outdoor unit averagely reduces 1.24% than the air-conditioner outdoor unit impeller rotary area noise that blade is not retrofited；
The air-conditioner outdoor unit improves 6.5% in single order than the intrinsic frequency for the air-conditioner outdoor unit impeller that blade is not retrofited, two
1.2% is improved when rank, improves 3.7% in three ranks, improves 5.11% in quadravalence.
2. a kind of air-conditioner outdoor unit it is characterised in that it includes trailing edge as described in claim 1 in microcellular structure impeller,
Heat exchanger, pod, electric machine support, middle partition, Air outlet net, condenser, fluid reservoir, flow controller, compressor；
The heat exchanger, pod, electric machine support, middle partition and Air outlet net successively constitute the air duct system of air-conditioner outdoor unit
System, the rear are separately fixed at composition air-conditioner outdoor unit impeller, the air-conditioner outdoor unit on impeller in the blade of microcellular structure
Impeller is located in air-conditioner outdoor unit ducting system body, and the condenser, flow controller, is located at air-conditioner outdoor unit body at fluid reservoir
Interior, the compressor is to drive refrigerant during air conditioner refrigerating.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910808185.1A CN110410880A (en) | 2019-08-29 | 2019-08-29 | A kind of trailing edge is in the air-conditioner outdoor unit of microcellular structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910808185.1A CN110410880A (en) | 2019-08-29 | 2019-08-29 | A kind of trailing edge is in the air-conditioner outdoor unit of microcellular structure |
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| Publication Number | Publication Date |
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| CN110410880A true CN110410880A (en) | 2019-11-05 |
Family
ID=68369208
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910808185.1A Pending CN110410880A (en) | 2019-08-29 | 2019-08-29 | A kind of trailing edge is in the air-conditioner outdoor unit of microcellular structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110296039A (en) * | 2019-07-24 | 2019-10-01 | 广东工业大学 | A kind of wind electricity blade and the wind-driven generator with the wind electricity blade |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000009096A (en) * | 1998-06-23 | 2000-01-11 | Daikin Ind Ltd | Impeller for blower |
| CN102635572A (en) * | 2012-04-27 | 2012-08-15 | 浙江理工大学 | Blade perforated small axial fan |
| CN102644623A (en) * | 2012-04-16 | 2012-08-22 | 广东美的制冷设备有限公司 | Axial-flow wind wheel |
| RU2529272C1 (en) * | 2013-05-16 | 2014-09-27 | Открытое Акционерное Общество "Уфимское Моторостроительное Производственное Объединение" (Оао "Умпо") | Axial-flow compressor blade |
| CN104454641A (en) * | 2014-11-13 | 2015-03-25 | 中国北车集团大连机车研究所有限公司 | Low-noise axial flow fan impeller for high-speed electric multiple unit cooling system |
| CN105782090A (en) * | 2016-04-26 | 2016-07-20 | 浙江理工大学 | Noise-lowering and vortex-reducing axial flow fan |
| CN211119718U (en) * | 2019-08-29 | 2020-07-28 | 代元军 | Air conditioner outdoor unit with rear edge of blade in microporous structure |
-
2019
- 2019-08-29 CN CN201910808185.1A patent/CN110410880A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000009096A (en) * | 1998-06-23 | 2000-01-11 | Daikin Ind Ltd | Impeller for blower |
| CN102644623A (en) * | 2012-04-16 | 2012-08-22 | 广东美的制冷设备有限公司 | Axial-flow wind wheel |
| CN102635572A (en) * | 2012-04-27 | 2012-08-15 | 浙江理工大学 | Blade perforated small axial fan |
| RU2529272C1 (en) * | 2013-05-16 | 2014-09-27 | Открытое Акционерное Общество "Уфимское Моторостроительное Производственное Объединение" (Оао "Умпо") | Axial-flow compressor blade |
| CN104454641A (en) * | 2014-11-13 | 2015-03-25 | 中国北车集团大连机车研究所有限公司 | Low-noise axial flow fan impeller for high-speed electric multiple unit cooling system |
| CN105782090A (en) * | 2016-04-26 | 2016-07-20 | 浙江理工大学 | Noise-lowering and vortex-reducing axial flow fan |
| CN211119718U (en) * | 2019-08-29 | 2020-07-28 | 代元军 | Air conditioner outdoor unit with rear edge of blade in microporous structure |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110296039A (en) * | 2019-07-24 | 2019-10-01 | 广东工业大学 | A kind of wind electricity blade and the wind-driven generator with the wind electricity blade |
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Application publication date: 20191105 |