CN100422567C - Tube-axial fan, outdoor unit of air conditioner - Google Patents

Tube-axial fan, outdoor unit of air conditioner Download PDF

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Publication number
CN100422567C
CN100422567C CNB2005101340302A CN200510134030A CN100422567C CN 100422567 C CN100422567 C CN 100422567C CN B2005101340302 A CNB2005101340302 A CN B2005101340302A CN 200510134030 A CN200510134030 A CN 200510134030A CN 100422567 C CN100422567 C CN 100422567C
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CN
China
Prior art keywords
point
axial fan
blade
trailing edge
vane
Prior art date
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Application number
CNB2005101340302A
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Chinese (zh)
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CN1793670A (en
Inventor
清水知史
小宫山嘉浩
石岛满义
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Toshiba Carrier Corp
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Toshiba Carrier Corp
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Publication date
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Publication of CN1793670A publication Critical patent/CN1793670A/en
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Publication of CN100422567C publication Critical patent/CN100422567C/en
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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
    • F04D29/325—Rotors specially for elastic fluids for axial flow pumps for axial flow fans
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
    • 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
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/32—Rotors specially for elastic fluids for axial flow pumps
    • F04D29/38—Blades
    • F04D29/388—Blades characterised by construction
    • 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
    • F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
    • F24F5/0096—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater combined with domestic apparatus
    • 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
    • F05D2210/00—Working fluids
    • F05D2210/10—Kind or type
    • F05D2210/12—Kind or type gaseous, i.e. compressible
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S415/00—Rotary kinetic fluid motors or pumps
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S416/00—Fluid reaction surfaces, i.e. impellers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S417/00—Pumps

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Other Air-Conditioning Systems (AREA)

Abstract

The invention provides an axial fan. A concave portion sinking toward a rotation direction is formed on the rear edge of a vane facing toward a direction opposite to the rotation direction of the vane; a projection portion projected toward a direction opposite to the rotation direction is formed at the intersected part between the rear edge and the outer side edge of the vane; and with an imaginary line for connecting a point on the rear edge of the vane with a point on the outer side edge of the vane, which is located closer to the front edge side of the vane than the point on the rear edge of the vane, as reference, the outer side area of the imaginary line is inclined toward a negative pressure surface side. The invention provides the axial fan with low noise and an indoor machine of an air conditioner using the axial fan.

Description

The outdoor unit of axial fan, air conditioner
Technical field
The present invention relates to axial fan and use the outdoor unit of its air conditioner, relate in particular to the blade shape that constitutes axial fan has been made improved axial fan and used the outdoor unit of its air conditioner.
Background technique
Axial fan is widely used in the outdoor unit of air conditioner etc.For axial fan in the past, be formed with a plurality of blades with the periphery of its wheel hub, in air outflow portion is that the bight that trailing edge and blade external side brim intersect is formed with the bellying that bloats to the air stream outgoing direction, and is provided with on above-mentioned bellying to the oblique rake of the suction surface inclination of blade (Japanese documentation 1: the spy opens the 2004-124748 communique).
This patent documentation 1 described axial fan suppresses the eddy current of the air stream of trailing edge, has obtained the noise reductionization, but has wished further to reduce the noise of axial fan.
Summary of the invention
In view of the foregoing, the object of the present invention is to provide the little axial fan of a kind of noise and use the outdoor unit of its air conditioner.
For achieving the above object, axial fan of the present invention is, radially on wheel hub be provided with a plurality of blades, be characterized in, be formed with the recess that caves in to sense of rotation at trailing edge towards the direction opposite with the blade sense of rotation, and the part that intersects at described trailing edge and blade external side brim is formed with the teat that bloats to the direction opposite with sense of rotation, with with the point on the described trailing edge be connected at the point that more is positioned at the blade inlet edge side on the blade external side brim than the point on the described trailing edge after imaginary line be benchmark, make the exterior lateral area of this imaginary line oblique to the suction surface inclination.It is characterized in that, when will be from the center of axial fan to described blade external side brim with the distance of the tie point of described teat be made as R, will be from described tie point when extremely the distance of the point on the described trailing edge is made as L, the distance that will be in the point (p3) of point (p2) to the blade external side brim on the described trailing edge in L/R=0.08～0.23 scope is made as K, determines the position of the described point (p3) on the blade external side brim with K/L=1.5～2.7.
Adopt axial fan of the present invention, can obtain the reductionization of noise.
In addition, adopt the outdoor unit of air conditioner of the present invention, can obtain the low noiseization of the outdoor unit integral body of air conditioner.
Description of drawings
Fig. 1 is an embodiment's of an expression axial fan of the present invention plan view.
Fig. 2 is the plan view that a blade of the axial fan among Fig. 1 is amplified expression.
Fig. 3 is the stereogram of the blade of axial fan of the present invention.
Fig. 4 is the longitudinal section of the blade of axial fan of the present invention.
Fig. 5 has been to use the figure as a result of the noise measuring test of axial fan of the present invention.
Fig. 6 has been to use the figure as a result of the noise measuring test of axial fan of the present invention.
Fig. 7 has been to use the figure as a result of the noise measuring test of axial fan of the present invention.
Fig. 8 has been to use the concept map of outdoor unit of the air conditioner of the present invention of axial fan of the present invention.
Embodiment
Below, describe axial fan of the present invention in detail referring to figs. 1 through Fig. 7.
Fig. 1 is the plan view of an example of expression axial fan of the present invention, and Fig. 2 is that a blade that will constitute this axial fan is amplified the figure of expression.
As shown in Figure 1, this routine axial fan 1 is to be provided with radial 3 blades 3 at wheel hub 2 side faces cylindraceous.This axial fan 1 along with its rotation with the parallel direction generation air-flow of axle of wheel hub 2,3 blades 3 are with 120 ° uniformly-spaced configuration.In addition, the number of blade 3 is not limited to 3, can be the suitable quantity more than or equal to 2.
The detail shape of blade 3 is described below with reference to Fig. 2～Fig. 4.
Blade 3 is at the recess 35 that is formed with towards the rightabout trailing edge 31 of sense of rotation (clockwise direction in the diagram) with axial fan 1 to the sense of rotation depression.In addition, in trailing edge portion 31 and the part that formation circular arc or suitable curvilinear blade external side brim 33 intersect, be formed with the teat with curve-like crest line 34 that bloats to the direction opposite with sense of rotation.
As shown in Figure 2, when will be from the center C of axial fan 1 to the curve of blade external side brim 33 and the tie point P of teat 34 curves 1Distance when being made as R, the curve of the recess 35 of trailing edge 31 and the point of inflexion on a curve of teat 34 are positioned at leaves the position that the C of fan center is 0.86R.
In addition, when will be from described tie point P 1Some P to the trailing edge 31 2Distance when being made as L, become 0.08～0.23 such position at L/R and determined some P 2, and with described some P from this trailing edge 31 2To be on the blade external side brim 33, than described some P 2More be positioned at the some P of blade inlet edge 32 sides 3Imaginary line I after the connection 1Be benchmark, θ makes this imaginary line I at a certain angle 1Exterior lateral area A oblique to the suction surface inclination as shown in Figure 3.In addition, preferably with the some P on the trailing edge 31 of described blade 3 2Some P to the blade external side brim 3Between distance be made as K, make K/L=1.5～2.7 determine a some P 3The position.Thus, also can understand, can improve noise from the plotted curve of Fig. 5.
In addition, as Fig. 2～shown in Figure 4, described tilt angle theta, be with imaginary line I 1Right angle intersection and make the 2nd imaginary line I with straight line that blade inlet edge 32 intersects 2, with respect to comprising two imaginary line I 1, I 2The angle of inclination on plane.Thus, the air flows of the trailing edge side of blade 3 becomes well, its result, and the eddy current loss that can alleviate air improves noise.
Especially, can understand, preferably tilt angle theta be set for 4～14 ° from the plotted curve of Fig. 6.Promptly as shown in Figure 6, if tilt angle theta is set in 4～14 °, can reduce noise.
In addition, owing in the scope of L/R=0.08～0.23, determined described some P 2, in the scope of K/L=1.5～2.7, determined described P 3The position, so can understand, compare with the axial fan that on trailing edge, is not provided with cant angle theta as described above (comparative example) from the plotted curve of Fig. 7, can realize low noiseization.
Adopt the axial fan of present embodiment, can further realize the reductionization of noise.
Below with reference to Fig. 8 the outdoor unit of air conditioner of the present invention is described.
As shown in Figure 8, the outdoor unit 11 of air conditioner of the present invention is, the axial fan 1 with said structure is as gas fan and in the outdoor housing 12 of packing into.The outdoor unit of air conditioner of the present invention for example when cooling operation, by axial fan 1 rotation, makes air flow to the outdoor heat converter 14 that is flowed by compressor 13 refrigerant compressed gases, is dispelled the heat by the heat of this air to outdoor heat converter 14.
Therefore, adopt the outdoor unit of air conditioner of the present invention, because the axial fan 1 of packing into is a low noise, so can realize the low noiseization of the outdoor unit integral body of air conditioner.
Concrete example
Test 1: in the axial fan of the present invention as shown in Figures 1 and 2, make a P 1With a P 2Between distance L and C of fan center and tie point P 1Between the ratio L/R of distance R change, level of noise has been made mensuration.
Fig. 5 represents the result of above-mentioned test 1.As can be seen from Figure 5, L/R is (0.08～0.23) within the scope of the invention, obtained preferable low noise value.But if L/R surpasses 0.23, then level of noise sharply increases, and on the other hand, less than 0.08, then level of noise increases gradually as if L/R.
Test 2: the tilt angle theta in outer circumferential side zone is changed, level of noise has been made mensuration.
Fig. 6 represents the result of this test 2.From Fig. 6 also as can be known, θ is 4～14 ° and has obtained preferable low noise value.But if break away from this scope, then level of noise sharply increases.
Test 3: used 4～14 ° scope to make the oblique axial fan of the present invention of the trailing edge inclination of blade 3 and be not provided with the axial fan (comparative example) of inclination, air quantity is changed, level of noise has been made mensuration at trailing edge.
Fig. 7 represents the result of this test 3.Represent measured load of the present invention with ■ among the figure, use ● the measured load of expression comparative example.From Fig. 7 also as can be known, embodiment compares with comparing profit, reduces at the whole regional noise of measuring air quantity.

Claims (2)

1. aerofoil fan; Radially on wheel hub be provided with a plurality of blades; Be formed with to the recess of direction of rotation depression towards the trailing edge with the direction of blade rotary opposite direction; And the part that intersects at described trailing edge and blade lateral border is formed with the teat that bloats to the direction opposite with direction of rotation; Take with the point on the described trailing edge be connected at the point that more is positioned at the blade inlet edge side on the blade lateral border than the point on the described trailing edge after imaginary line as benchmark; The exterior lateral area of this imaginary line is rolled tiltedly to suction surface
It is characterized in that, when will be from the center of axial fan to described blade external side brim being made as R, when the distance of point on will be from described tie point to described trailing edge is made as L, will being in the point (p on the interior described trailing edge of L/R=0.08～0.23 scope with the distance of the tie point of described teat 2) point (p to the blade external side brim 3) distance be made as K, determine described point (p on the blade external side brim with K/L=1.5～2.7 3) the position.
2. the outdoor unit of an air conditioner is characterized in that, the described axial fan of claim 1 that has compressor, outdoor heat converter and blow to described outdoor heat converter.
CNB2005101340302A 2004-12-21 2005-12-21 Tube-axial fan, outdoor unit of air conditioner Active CN100422567C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2004369400A JP4689262B2 (en) 2004-12-21 2004-12-21 Axial fan, outdoor unit of air conditioner
JP2004369400 2004-12-21
JP2004-369400 2004-12-21

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Publication Number Publication Date
CN1793670A CN1793670A (en) 2006-06-28
CN100422567C true CN100422567C (en) 2008-10-01

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KR (1) KR100737033B1 (en)
CN (1) CN100422567C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101660535B (en) * 2008-08-29 2012-06-27 株式会社日立产机*** Centrifugal fan and air fluid machinery using the same

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CN100465458C (en) * 2007-01-31 2009-03-04 广东美的电器股份有限公司 Axial-flow windwheel
JP5210852B2 (en) * 2008-12-22 2013-06-12 山洋電気株式会社 Axial blower
CN101825114A (en) * 2009-03-06 2010-09-08 韩玮 Axial flow fan capable of reducing energy consumption and noise
CN103185036B (en) * 2011-12-28 2015-06-03 珠海格力电器股份有限公司 Axial fan and air conditioner with same
KR20130109515A (en) * 2012-03-27 2013-10-08 삼성전자주식회사 Axial fan of outdoor unit of air conditioner
JP6035508B2 (en) * 2012-04-02 2016-11-30 パナソニックＩｐマネジメント株式会社 Blower and outdoor unit using it
CN102678594A (en) * 2012-05-11 2012-09-19 常州新德冷机有限公司 Outdoor modularization fan of air-conditioner
KR102058859B1 (en) * 2012-07-02 2019-12-27 삼성전자주식회사 Indoor Unit of Air Conditioner
CN103673256A (en) * 2012-09-17 2014-03-26 美的集团股份有限公司 Full direct current variable-frequency air conditioner outdoor machine and air conditioner
CN103939392B (en) * 2013-01-18 2017-05-24 珠海格力电器股份有限公司 Axial flow fan blade and air conditioner with same
JP5980180B2 (en) * 2013-08-08 2016-08-31 三菱電機株式会社 Axial flow fan and air conditioner having the axial flow fan
CN105257597B (en) * 2015-11-12 2018-04-20 珠海格力电器股份有限公司 Axial flow fan and axial flow fan blade thereof
KR102479815B1 (en) 2015-11-30 2022-12-23 삼성전자주식회사 Blowing fan and air conditioner having the same
JP6849366B2 (en) * 2016-09-29 2021-03-24 山洋電気株式会社 Reversible flow fan
JP6980921B2 (en) * 2018-08-06 2021-12-15 シャープ株式会社 Propeller fan and blower
CN114645871A (en) * 2020-12-18 2022-06-21 青岛海尔空调电子有限公司 Axial-flow impeller, axial-flow fan with same and air conditioner

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Cited By (2)

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Publication number Priority date Publication date Assignee Title
CN101660535B (en) * 2008-08-29 2012-06-27 株式会社日立产机*** Centrifugal fan and air fluid machinery using the same
TWI394895B (en) * 2008-08-29 2013-05-01 Hitachi Ind Equipment Sys Centrifugal fans and air fluid machinery using the centrifugal fan

Also Published As

Publication number Publication date
JP4689262B2 (en) 2011-05-25
JP2006177205A (en) 2006-07-06
KR100737033B1 (en) 2007-07-09
KR20060071325A (en) 2006-06-26
CN1793670A (en) 2006-06-28

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