CN102705264A - Axial flow wind wheel - Google Patents

Axial flow wind wheel Download PDF

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Publication number
CN102705264A
CN102705264A CN2012101975809A CN201210197580A CN102705264A CN 102705264 A CN102705264 A CN 102705264A CN 2012101975809 A CN2012101975809 A CN 2012101975809A CN 201210197580 A CN201210197580 A CN 201210197580A CN 102705264 A CN102705264 A CN 102705264A
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CN
China
Prior art keywords
blade
zone
passization
axial
flow windwheel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN2012101975809A
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Chinese (zh)
Inventor
马丽华
李跃飞
韦福权
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Midea Group
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Midea Group
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Midea Group filed Critical Midea Group
Priority to CN2012101975809A priority Critical patent/CN102705264A/en
Publication of CN102705264A publication Critical patent/CN102705264A/en
Pending legal-status Critical Current

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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
    • F04D29/32—Rotors specially for elastic fluids for axial flow pumps
    • F04D29/38—Blades
    • F04D29/384—Blades characterised by form
    • 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
    • F04D29/68—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers
    • F04D29/681—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers especially adapted for elastic fluid pumps
    • F04D29/682—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers especially adapted for elastic fluid pumps by fluid extraction
    • 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
    • F04D29/68—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers
    • F04D29/681—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers especially adapted for elastic fluid pumps
    • F04D29/684—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers especially adapted for elastic fluid pumps by fluid injection
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2240/00—Components
    • F05D2240/20—Rotors
    • F05D2240/30—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor
    • F05D2240/307—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor related to the tip of a rotor blade

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Wind Motors (AREA)

Abstract

The invention relates to an axial flow wind wheel. The novel wind turbine blade comprises at least two blades (3) arranged on a hub (2), wherein the blades (3) are provided with hole-type areas provided with a plurality of through holes (4). The blades (3) are distributed on the hub (2) at equal intervals or unequal intervals by taking the rotating central axis of the wind wheel as the center, and the areas of the blades (3) on the outer edges (31) of the blades are hole-shaped areas. When the axial flow wind wheel rotates, the hole-shaped structure of the area near the outer edge of the blade enables the air on the pressure surface of the blade to flow into the suction surface through the through holes, the kinetic energy of the air on the suction surface of the blade is increased, and the growth of a boundary layer is inhibited, so that the vortex noise is effectively reduced, the tone quality is softer and more comfortable, meanwhile, the hole-shaped structure of the area near the outer edge of the blade reduces the weight of the wind wheel and the load of a motor, and the cost of the wind wheel and the power of the motor are reduced. The invention is especially suitable for the outdoor unit of the air conditioner.

Description

A kind of axial-flow windwheel
Technical field
The present invention relates to a kind of axial-flow windwheel, particularly a kind of axial-flow windwheel that is applicable to the air conditioner outdoor machine group.
Background technique
Adopt axial-flow windwheel to dispel the heat in the existing air conditioner outdoor machine group mostly; Axial-flow windwheel comprises that two of being arranged on the wheel hub and two are with upper blade; Blade with the rotating center axis of wind wheel be the center equidistantly or unequal-interval be distributed on the wheel hub, during the rotation of common blade structure axial-flow windwheel, on blade suction surface, cause the accumulation of low energy fluid easily; On the suction surface of blade, form larger-size vortex, produce higher aerodynamic noise when causing the wind wheel running.Test analysis factually, 50%-70% is that aerodynamic noise by axial-flow windwheel causes in the noise of outdoor unit.
Summary of the invention
Thereby the object of the present invention is to provide a kind of kinetic energy to suppress boundary layer growth reduction eddy current crack and alleviate wind wheel weight and motor load simultaneously through the increase suction surface; Reduce the axial-flow windwheel of wind wheel cost and power of motor, to overcome deficiency of the prior art.
A kind of axial-flow windwheel by this purpose design comprises being arranged at least two blades on the wheel hub, and wherein blade is provided with the passization zone that is provided with some through holes.
Above-mentioned blade with the rotating center axis of wind wheel be the center equidistantly or unequal-interval be distributed on the wheel hub, blade is the passization zone in the zone of its blade outer rim.
The external diameter of above-mentioned axial-flow windwheel is defined as D 1, hub diameter is defined as D 2, set (D 1-D 2)/2 are blade height R m, the position A place radius of the passization zone beginning of blade outer rim is defined as R A, (R is arranged A-D 2/ 2)/R m>0.1; The position B place radius that finish in blade outer rim (31) passization zone is defined as R B, (R is arranged B– D 2/ 2)/R m<0.99.
The height of above-mentioned axial-flow windwheel is defined as H, and near the position A place of the passization zone beginning blade outer rim highly is defined as H A, H is arranged A/ H>0.01; Near the position B place that finish in the passization zone blade outer rim highly is defined as H B, H is arranged B/ H<0.99.
Above-mentioned is c with the distance definition between passization adjacent two through holes in zone (4) of blade outer rim 1, c 2, c 3... C N-1,N>=2, n is the number of blade passization zone through hole, the diameter of blade passization zone through hole (4) is defined as d 1, d 2, d 3... D N,(n>=2), c N-1With d N-1Ratio is defined as δ, δ=c N-1/ d N-1, δ＞1 wherein.
The passization zone of above-mentioned axial-flow windwheel blade outer rim, the distance c between the adjacent through-holes 1, c 2, c 3... C N-1Equal and opposite in direction or do not wait the diameter d of through hole 1, d 2, d 3... D nEqual and opposite in direction or do not wait.
The through hole in above-mentioned axial-flow windwheel blade outer rim passization zone be shaped as circle, ellipse, polygonal and other combinations irregularly shaped or some above shapes.
The through hole in above-mentioned axial-flow windwheel blade outer rim passization zone is single, and the spacing of single through hole equates or be unequal.
The through hole in the passization zone of above-mentioned axial-flow windwheel blade outer rim is many rows, and the quantity of every exhausting hole equates or do not wait.
The through hole in above-mentioned axial-flow windwheel blade outer rim passization zone is many rows, and the spacing of every exhausting hole equates or be unequal.
When axial-flow windwheel of the present invention rotates; The pass structure of blade outer rim near zone makes the gas via through holes of blade pressure surface flow into suction surface, has changed the pressure distribution on the blade, has increased the kinetic energy of gas on the blade suction surface; Suppressed the growth in boundary layer; Thereby effectively reduce eddy current crack and make tonequality softer, comfortable, the pass structure of blade outer rim near zone has alleviated wind wheel weight and motor load simultaneously, has reduced wind wheel cost and power of motor.The present invention is particularly useful for the air conditioner outdoor machine group.
Description of drawings
Fig. 1 is axial-flow windwheel one embodiment's perspective view of the present invention.
Fig. 2 is an axial-flow windwheel impeller diameter definition structure schematic representation of the present invention.
Fig. 3 is an axial-flow windwheel impeller height definition structure schematic representation of the present invention.
Fig. 4 is blade pass region apertures diameter of the present invention and hole pitch definition structure schematic representation.
Fig. 5 is the structural representation of two row's circular holes for blade pass of the present invention zone.
Fig. 6 is the structural representation of three row's circular holes for blade pass of the present invention zone.
Fig. 7 is conventional axial-flow windwheel perspective view.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is further described.
Among each figure, 1 is axial-flow windwheel, and 2 is wheel hub, and 3 is blade, and 31 is the blade outer rim, and 4 is the through hole in the pass zone, D 1Be the external diameter of axial-flow windwheel, D 2Be hub diameter, R mBe blade height, R AThe radius that the position A that begins near the passization zone blade outer rim belongs to, R BThe radius that the position B that finishes near the passization zone blade outer rim belongs to, H is the wind wheel height, H ABe near the position A place height of the passization zone beginning blade outer rim, H BBe the position B place height that finish near the passization zone blade outer rim, c 1, c 2, c 3... C N-1Be the distance between adjacent two through holes in blade passization zone, d 1, d 2, d 3... D nBe the diameter of blade passization zone through hole, δ is the ratio of blade passization zone through-hole spacing and through-hole diameter.
Referring to Fig. 1; Axial-flow windwheel 1 comprises the blade 3 that is arranged on the wheel hub 2; Blade 3 is of similar shape and setting angle; Blade 3 with the rotating center axis of wind wheel 1 be the center equidistantly or unequal-interval be distributed on the wheel hub 2, the near zone of the outer rim 31 of blade 3 is blade passization zones 4, the pass zone of blade outer rim 31 is provided with 1 exhausting hole 4.Above-mentioned blade outer rim 31 is meant near the position of the outermost profile of blade 3.
Referring to Fig. 2, the external diameter of axial-flow windwheel is defined as D 1, hub diameter is defined as D 2, set (D 1-D 2)/2 are blade height R m, near the position A place radius of the passization zone beginning blade outer rim is defined as R A, (R is arranged A-D 2/ 2)/R m>0.1; Near the position B place radius that finish in the passization zone blade outer rim is defined as R B, (R is arranged B– D 2/ 2)/R m<0.99.
With reference to Fig. 3, the axial-flow windwheel height is defined as H, and near the position A place of the passization zone beginning blade outer rim highly is defined as H A, H is arranged A/ H>0.01; Near the position B place that finish in the passization zone blade outer rim highly is defined as H B, H is arranged B/ H<0.99.
With reference to Fig. 4, be c with the distance definition between adjacent two through holes in blade passization zone 1, c 2, c 3... C N-1, n>=2, n is the number of blade pass regional perforation, the d that the diameter of blade passization zone through hole is defined as 1, d 2, d 3... D n, (n>=2), c N-1With d N-1Ratio is defined as δ, δ=c N-1/ d N-1, δ＞1 wherein.The blade structure of passization can make the gas of pressure side flow into suction surface to some extent through through hole; Increase the kinetic energy of gas on the suction surface; Active volume phyllidium sheet suction surface low energy fluid is piled up, and suppresses the growth in boundary layer, thereby effectively reduces the eddy current noise of wind wheel; Reduce wind wheel noise 1.0 dB～3.0dB, power of motor reduces about 10%.
Referring to Fig. 5, near the passization zone 4 axial-flow windwheel blade outer rim of the present invention is the structural representation of 2 row's circular holes.
Referring to Fig. 6, near the passization zone 4 axial-flow windwheel blade outer rim of the present invention is the structural representation of 3 row's circular holes.
The shape of through holes in passization zone 32 can also be ellipse, polygonal and other combinations irregularly shaped or some above shapes near the axial-flow windwheel blade outer rim of the present invention.
Referring to Fig. 7, conventional axial-flow windwheel blade anapsid structure.

Claims (10)

1. an axial-flow windwheel comprises being arranged at least two blades (3) on the wheel hub (2), it is characterized in that blade (3) is provided with the passization zone that is provided with some through holes (4).
2. axial-flow windwheel according to claim 1; It is characterized in that above-mentioned blade (3) with the rotating center axis of wind wheel be the center equidistantly or unequal-interval be distributed on the wheel hub (2), blade (3) is the passization zone in the zone of its blade outer rim (31).
3. axial-flow windwheel according to claim 2 is characterized in that the external diameter of above-mentioned axial-flow windwheel is defined as D 1, hub diameter is defined as D 2, set (D 1-D 2)/2 are blade height R m, the position A place radius of the passization zone beginning of blade outer rim (31) is defined as R A, (R is arranged A-D 2/ 2)/R m>0.1; The position B place radius that finish in blade outer rim (31) passization zone is defined as R B, (R is arranged B– D 2/ 2)/R m<0.99.
4. axial-flow windwheel according to claim 2 is characterized in that the height of above-mentioned axial-flow windwheel is defined as H, and near the position A place of the passization zone beginning blade outer rim highly is defined as H A, H is arranged A/ H>0.01; Near the position B place that finish in the passization zone blade outer rim highly is defined as H B, H is arranged B/ H<0.99.
5. axial-flow windwheel according to claim 2 is characterized in that above-mentioned is c with the distance definition between passization adjacent two through holes in zone (4) of blade outer rim (31) 1, c 2, c 3... C N-1,N>=2, n is the number of blade passization zone through hole, the diameter of blade passization zone through hole (4) is defined as d 1, d 2, d 3... D N,(n>=2), c N-1With d N-1Ratio is defined as δ, δ=c N-1/ d N-1, δ＞1 wherein.
6. axial-flow windwheel according to claim 2 is characterized in that the passization of above-mentioned axial-flow windwheel blade outer rim (31) is regional, the distance c between the adjacent through-holes (4) 1, c 2, c 3... C N-1Equal and opposite in direction or do not wait the diameter d of through hole 1, d 2, d 3... D nEqual and opposite in direction or do not wait.
7. according to each described axial-flow windwheel of claim 1 to 6, it is characterized in that above-mentioned axial-flow windwheel blade outer rim (31) passization zone through hole (4) be shaped as circle, ellipse, polygonal and other combinations irregularly shaped or some above shapes.
8. axial-flow windwheel according to claim 7, the through hole (4) that it is characterized in that above-mentioned axial-flow windwheel blade outer rim (31) passization zone is for single, and the spacing of single through hole (4) equates or is unequal.
9. axial-flow windwheel according to claim 7 is characterized in that the through hole (4) in the passization zone of above-mentioned axial-flow windwheel blade outer rim (31) is many rows, and the quantity of every exhausting hole (4) equates or do not wait.
10. axial-flow windwheel according to claim 9 is characterized in that the through hole (4) in above-mentioned axial-flow windwheel blade outer rim (31) passization zone is many rows, and the spacing of every exhausting hole (4) equates or be unequal.
CN2012101975809A 2012-06-15 2012-06-15 Axial flow wind wheel Pending CN102705264A (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105307931A (en) * 2013-01-25 2016-02-03 彼得·艾瑞兰德 Energy efficiency improvements for turbomachinery
CN106568109A (en) * 2016-11-11 2017-04-19 宁波方太厨具有限公司 Noise reducing impeller and range hood applying impeller
CN107313979A (en) * 2017-08-31 2017-11-03 广东美的制冷设备有限公司 Axial-flow windwheel and the air conditioner with it
CN107477003A (en) * 2016-06-08 2017-12-15 日本电产株式会社 Air-supply arrangement
WO2018206978A1 (en) * 2017-05-11 2018-11-15 Oscar Propulsion Ltd Propeller cavitation and noise reduction
CN110228586A (en) * 2019-05-07 2019-09-13 刘羽双 A kind of unmanned plane rotor eddy current crack reduction method based on blade perforation
KR20200105627A (en) * 2019-02-28 2020-09-08 에베엠-팝스트 센트 게오르겐 게엠베하 운트 코. 카게 Axial ventilator having noise-reducing fan wheel blades

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07243397A (en) * 1994-03-02 1995-09-19 Matsushita Refrig Co Ltd Air blower
CN2451783Y (en) * 2000-10-10 2001-10-03 安徽天大(集团)股份有限公司工程塑料厂 Axial flow fan blades
US20100150731A1 (en) * 2008-11-28 2010-06-17 Zhongshan Broad-Ocean Motor Co., Ltd. Fan blades
CN202991623U (en) * 2012-06-15 2013-06-12 美的集团股份有限公司 Axial flow wind wheel

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07243397A (en) * 1994-03-02 1995-09-19 Matsushita Refrig Co Ltd Air blower
CN2451783Y (en) * 2000-10-10 2001-10-03 安徽天大(集团)股份有限公司工程塑料厂 Axial flow fan blades
US20100150731A1 (en) * 2008-11-28 2010-06-17 Zhongshan Broad-Ocean Motor Co., Ltd. Fan blades
CN202991623U (en) * 2012-06-15 2013-06-12 美的集团股份有限公司 Axial flow wind wheel

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105307931A (en) * 2013-01-25 2016-02-03 彼得·艾瑞兰德 Energy efficiency improvements for turbomachinery
CN107477003A (en) * 2016-06-08 2017-12-15 日本电产株式会社 Air-supply arrangement
CN106568109A (en) * 2016-11-11 2017-04-19 宁波方太厨具有限公司 Noise reducing impeller and range hood applying impeller
CN106568109B (en) * 2016-11-11 2019-07-26 宁波方太厨具有限公司 A kind of application has the range hood of noise reduction impeller
WO2018206978A1 (en) * 2017-05-11 2018-11-15 Oscar Propulsion Ltd Propeller cavitation and noise reduction
CN110869275A (en) * 2017-05-11 2020-03-06 奥斯卡推进有限责任公司 Propeller cavitation and noise reduction
CN107313979A (en) * 2017-08-31 2017-11-03 广东美的制冷设备有限公司 Axial-flow windwheel and the air conditioner with it
CN107313979B (en) * 2017-08-31 2019-04-30 广东美的制冷设备有限公司 Axial-flow windwheel and air conditioner with it
KR20200105627A (en) * 2019-02-28 2020-09-08 에베엠-팝스트 센트 게오르겐 게엠베하 운트 코. 카게 Axial ventilator having noise-reducing fan wheel blades
KR102320943B1 (en) * 2019-02-28 2021-11-04 에베엠-팝스트 센트 게오르겐 게엠베하 운트 코. 카게 Axial ventilator having noise-reducing fan wheel blades
CN110228586A (en) * 2019-05-07 2019-09-13 刘羽双 A kind of unmanned plane rotor eddy current crack reduction method based on blade perforation

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Address after: 528311 Guangdong, Foshan, Beijiao, the United States, the United States and the United States on the avenue of the United States, the headquarters of the United States building B floor, District, 26-28

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Application publication date: 20121003