CN101440822A - Axial fan and fan blade of centrifugal fan - Google Patents

Axial fan and fan blade of centrifugal fan Download PDF

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Publication number
CN101440822A
CN101440822A CNA2008101870340A CN200810187034A CN101440822A CN 101440822 A CN101440822 A CN 101440822A CN A2008101870340 A CNA2008101870340 A CN A2008101870340A CN 200810187034 A CN200810187034 A CN 200810187034A CN 101440822 A CN101440822 A CN 101440822A
Authority
CN
China
Prior art keywords
fan blade
pressure compensation
fan
hole
marginal part
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
CNA2008101870340A
Other languages
Chinese (zh)
Inventor
张达
陈宇奇
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.)
Zhongshan Broad Ocean Motor Co Ltd
Original Assignee
Zhongshan Broad Ocean Motor Co Ltd
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 Zhongshan Broad Ocean Motor Co Ltd filed Critical Zhongshan Broad Ocean Motor Co Ltd
Priority to CNA2008101870340A priority Critical patent/CN101440822A/en
Publication of CN101440822A publication Critical patent/CN101440822A/en
Priority to PCT/CN2009/073373 priority patent/WO2010066140A1/en
Priority to ITMI2009A002129A priority patent/IT1396643B1/en
Priority to FR0958600A priority patent/FR2939851A1/en
Priority to DE102009044824A priority patent/DE102009044824A1/en
Priority to CA2687806A priority patent/CA2687806A1/en
Priority to US12/635,665 priority patent/US20100150731A1/en
Priority to GB0921650A priority patent/GB2466125A/en
Pending legal-status Critical Current

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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
    • F04D29/28—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
    • 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
    • F04D29/289—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps having provision against erosion or for dust-separation
    • 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
    • F04D29/30—Vanes
    • 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
    • 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

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

The utility model provides an axial fan and centrifugal fan's fan blade, includes leading portion (1) of air inflow direction and trailing edge portion (2) of air outflow direction, its characterized in that: the rear edge part (2) is provided with a plurality of pressure balance holes (3), the rear edge part of the fan blade is provided with a plurality of pressure balance holes, the pressure difference of the front surface and the rear surface of the fan blade is reduced, the backflow phenomenon caused by the airflow separation of the boundary layer of the rear edge part is eliminated, the effective function area of the fan blade is increased, the power consumption and the noise quality are potentially improved, and meanwhile, a large amount of dust is prevented from being deposited.

Description

The fan blade of a kind of axial fan and centrifugal cutter
Technical field:
The present invention relates generally to a kind of fan blade of axial fan and the fan blade of centrifugal cutter.
Background technique:
As shown in Figure 1, the fan blade of existing axial fan, the front edge 1 of air stream Inbound and the hinder marginal part 2 of air stream outgoing direction, when fan blade rotates, front edge 1 pushes away leaked-in air forward, the design of hinder marginal part 2 is beneficial to air and flows out, through experimental results show that: when 1) fan blade rotates, the influence that air draught strengthens because of rotation function at the fan blade trailing edge, cause air draught in flowing out hinder marginal part 2 processes, the boundary layer airflow separating belt comes backflow phenomenon, easily 3 a large amount of dusts 4 of hinder marginal part 2 depositions in the windward side, cooling axial fan in the experiment from the computer, we can be very easy to find the situation of foregoing description.The windward side 2 of fan blade is meant the one side identical with air-out direction.
In addition, there is above-mentioned technical problem equally in the fan blade of centrifugal cutter.
Summary of the invention:
In order to overcome the deficiencies in the prior art, an object of the present invention is a kind of fan blade of axial fan, design several pressure compensation openings at the fan blade hinder marginal part, reduce the pressure reduction of fan blade front-back, eliminate the hinder marginal part boundary layer airflow and separate the backflow phenomenon that brings, increase the effective efficiency area of flabellum, thereby potential power consumpiton and the noise quality improved avoids depositing a large amount of dusts simultaneously.
The fan blade of a kind of axial fan of the present invention is to finish by following technological scheme: a kind of fan blade of axial fan, comprise the front edge of air stream Inbound and the hinder marginal part of air stream outgoing direction, and have several pressure compensation openings on the hinder marginal part.
Compared with prior art, advantage of the present invention has: design several pressure compensation openings at the fan blade hinder marginal part, play the effect of self balancing pressure, reduce the pressure reduction of fan blade front-back, eliminate the hinder marginal part boundary layer airflow and separate the backflow phenomenon that brings, increase the effective efficiency area of flabellum, thereby potential power consumpiton and the noise quality improved avoids depositing a large amount of dusts simultaneously.
Above-mentioned described several pressure compensation openings can be array distribution, evenly distribute, and also can be random distribution.
The pore diameter range of above-mentioned described pressure compensation opening: 0.1mm-100mm.
Described pressure compensation opening can be circular or non-circular clear opening, straight blind hole, oblique through hole or oblique blind hole.
The distribution of above-mentioned described several pressure compensation openings constitutes a hole pattern, regulates fan blade two surface pressures; The distribution of pressure compensation opening, shape and size are decided according to size, shape, working environment and the condition of fan blade.
Another object of the present invention is a kind of fan blade of centrifugal cutter, design several pressure compensation openings at the fan blade hinder marginal part, reduce the pressure reduction of fan blade front-back, eliminate the hinder marginal part boundary layer airflow and separate the backflow phenomenon that brings, increase the effective efficiency area of flabellum, thereby potential power consumpiton and the noise quality improved avoids depositing a large amount of dusts simultaneously.
The fan blade of a kind of centrifugal cutter of the present invention is to finish by following technological scheme: a kind of fan blade of centrifugal cutter, comprise the front edge of air stream Inbound and the hinder marginal part of air stream outgoing direction, and have several pressure compensation openings on the hinder marginal part.
Compared with prior art, advantage of the present invention has: design several pressure compensation openings at the fan blade hinder marginal part, play the effect of self balancing pressure, reduce the pressure reduction of fan blade front-back, eliminate the hinder marginal part boundary layer airflow and separate the backflow phenomenon that brings, increase the effective efficiency area of flabellum, thereby potential power consumpiton and the noise quality improved avoids depositing a large amount of dusts simultaneously.
Above-mentioned described several pressure compensation openings can be array distribution, evenly distribute, and also can be random distribution.
The pore diameter range of above-mentioned described pressure compensation opening: 0.1mm-100mm.
Described pressure compensation opening can be circular or non-circular clear opening, straight blind hole, oblique through hole or oblique blind hole.
The distribution of above-mentioned described several pressure compensation openings constitutes a hole pattern, regulates fan blade two surface pressures; The distribution of pressure compensation opening, shape and size are decided according to size, shape, working environment and the condition of fan blade.
Description of drawings:
Below in conjunction with accompanying drawing the present invention is done detailed explanation:
Fig. 1 is the structural representation of conventional axial-flow fan
Fig. 2 is the structural representation of axial fan fan blade of the present invention;
Fig. 3 is the application schematic representation of axial fan of the present invention;
Fig. 4 is the structural representation of centrifugal cutter of the present invention;
Fig. 5 is the structural representation of centrifugal cutter fan blade of the present invention.
Embodiment:
Embodiment 1: as Fig. 2, shown in Figure 3, axial fan fan blade of the present invention comprises the front edge 1 of air stream Inbound and the hinder marginal part 2 of air stream outgoing direction, has several pressure compensation openings 3 on the hinder marginal part 2.Several pressure compensation openings 3 can be circular hole, non-circular hole, clear opening, straight blind hole, oblique through hole or oblique blind hole.The distribution of several pressure compensation openings 3 constitutes a hole pattern, regulates fan blade two surface pressures.The pore diameter range of pressure compensation opening 3: 0.1mm-100mm.
Through experimental results show that: on hinder marginal part 2, have several pressure compensation openings 3, play the effect of self balancing pressure, reduce the pressure reduction of fan blade front-back, hinder marginal part 2 boundary layer airflow of eliminating on the windward side 4 are separated the backflow phenomenon that brings, increase the effective efficiency area of flabellum, thereby potential power consumpiton and the noise quality improved avoids depositing a large amount of dusts, sanitation and hygiene simultaneously.
Embodiment 2: as Fig. 4, shown in Figure 5, centrifugal cutter fan blade of the present invention comprises the front edge 1 of air stream Inbound and the hinder marginal part 2 of air stream outgoing direction, has several pressure compensation openings 3 on the hinder marginal part 2.Several pressure compensation openings 3 can be circular hole, non-circular hole, clear opening, straight blind hole, oblique through hole or oblique blind hole.The distribution of several pressure compensation openings 3 constitutes a hole pattern, regulates fan blade two surface pressures.The pore diameter range of pressure compensation opening 3: 0.1mm-100mm.
Through experimental results show that: on hinder marginal part 2, have several pressure compensation openings 3, play the effect of self balancing pressure, reduce the pressure reduction of fan blade front-back, hinder marginal part 2 boundary layer airflow of eliminating on the windward side 4 are separated the backflow phenomenon that brings, increase the effective efficiency area of flabellum, thereby potential power consumpiton and the noise quality improved avoids depositing a large amount of dusts, sanitation and hygiene simultaneously.

Claims (10)

1. the fan blade of an axial fan comprises the front edge (1) of air stream Inbound and the hinder marginal part (2) of air stream outgoing direction, it is characterized in that: have several pressure compensation openings (3) on the hinder marginal part (2).
2. the fan blade of a kind of axial fan according to claim 1, it is characterized in that: several pressure compensation openings (3) can be array distribution, can be even distributions, also can be random distribution.
3. the fan blade of a kind of axial fan according to claim 1 and 2 is characterized in that: described pressure compensation opening (3) can be clear opening, straight blind hole, tiltedly through hole or oblique blind hole.
4. the fan blade of a kind of axial fan according to claim 3 is characterized in that: hole pattern of distribution formation of several pressure compensation openings (3), adjusting fan blade two surface pressures.
5. the fan blade of a kind of axial fan according to claim 3 is characterized in that: the pore diameter range of pressure compensation opening (3): 0.1mm-100mm; Pressure compensation opening (3) can be circular hole, non-circular hole.
6. the fan blade of a centrifugal cutter comprises the front edge (1) of air stream Inbound and the hinder marginal part (2) of air stream outgoing direction, it is characterized in that: have several pressure compensation openings (3) on the hinder marginal part (2).
7. the fan blade of a kind of centrifugal cutter according to claim 6, it is characterized in that: several pressure compensation openings (3) can be array distribution, can be even distributions, also can be random distribution.
8. according to the fan blade of claim 6 or 7 described a kind of centrifugal cutters, it is characterized in that: described pressure compensation opening (3) can be clear opening, straight blind hole, oblique through hole or oblique blind hole.
9. the fan blade of a kind of centrifugal cutter according to claim 8 is characterized in that: hole pattern of distribution formation of several pressure compensation openings (3), adjusting fan blade two surface pressures.
10. the fan blade of a kind of centrifugal cutter according to claim 8 is characterized in that: the pore diameter range of pressure compensation opening (3): 0.1mm-100mm; Pressure compensation opening (3) can be circular hole, non-circular hole.
CNA2008101870340A 2008-11-28 2008-12-11 Axial fan and fan blade of centrifugal fan Pending CN101440822A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
CNA2008101870340A CN101440822A (en) 2008-11-28 2008-12-11 Axial fan and fan blade of centrifugal fan
PCT/CN2009/073373 WO2010066140A1 (en) 2008-12-11 2009-08-20 A fan blade of an axial fan or a centrifugal fan
ITMI2009A002129A IT1396643B1 (en) 2008-11-28 2009-12-02 FAN BLADES.
FR0958600A FR2939851A1 (en) 2008-12-11 2009-12-02 BLADE FOR FAN
DE102009044824A DE102009044824A1 (en) 2008-12-11 2009-12-08 fan blades
CA2687806A CA2687806A1 (en) 2008-12-11 2009-12-10 Fan blades
US12/635,665 US20100150731A1 (en) 2008-11-28 2009-12-10 Fan blades
GB0921650A GB2466125A (en) 2008-12-11 2009-12-11 A Fan Blade with Holes

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CN200810219647 2008-11-28
CN200810219647.8 2008-11-28
CNA2008101870340A CN101440822A (en) 2008-11-28 2008-12-11 Axial fan and fan blade of centrifugal fan

Publications (1)

Publication Number Publication Date
CN101440822A true CN101440822A (en) 2009-05-27

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Family Applications (1)

Application Number Title Priority Date Filing Date
CNA2008101870340A Pending CN101440822A (en) 2008-11-28 2008-12-11 Axial fan and fan blade of centrifugal fan

Country Status (3)

Country Link
US (1) US20100150731A1 (en)
CN (1) CN101440822A (en)
IT (1) IT1396643B1 (en)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010066140A1 (en) * 2008-12-11 2010-06-17 中山大洋电机股份有限公司 A fan blade of an axial fan or a centrifugal fan
CN102003409A (en) * 2010-12-30 2011-04-06 上海交通大学 Blade in corrugated structure for centrifugal fan of winder
CN102536898A (en) * 2010-12-29 2012-07-04 台达电子工业股份有限公司 Fan and impeller thereof
CN102644623A (en) * 2012-04-16 2012-08-22 广东美的制冷设备有限公司 Axial-flow wind wheel
CN102678586A (en) * 2012-05-23 2012-09-19 浙江理工大学 Blade perforation type bladeless fan turbine device
CN103867468A (en) * 2014-03-21 2014-06-18 宁波高新区金杉新能源科技有限公司 Hot-and-cold fan with air purification function
CN103929011A (en) * 2012-11-06 2014-07-16 米沃奇电动工具公司 Electric Motor For A Power Tool
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
CN107044442A (en) * 2017-04-26 2017-08-15 朱晓义 A kind of fan for producing bigger motive force
CN107061357A (en) * 2017-01-20 2017-08-18 美的集团股份有限公司 Blade, centrifugal blower fan blade wheel, centrifugal blower and range hood
KR20190085735A (en) * 2018-01-11 2019-07-19 엘지전자 주식회사 Axial flow fan
CN110552852A (en) * 2019-10-17 2019-12-10 湖南中科宇能科技有限公司 Built-in manhole plate of wind power blade
CN113266601A (en) * 2021-06-18 2021-08-17 中山百得厨卫有限公司 Noise-reduction centrifugal wind wheel with opening holes on blades and range hood
US11784518B2 (en) 2012-11-06 2023-10-10 Milwaukee Electric Tool Corporation Electric motor for a power tool

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CN102705264A (en) * 2012-06-15 2012-10-03 美的集团有限公司 Axial flow wind wheel
US20140271286A1 (en) * 2013-03-14 2014-09-18 William McNeill Noise Producing Fan
DE102013206207A1 (en) * 2013-04-09 2014-10-09 MTU Aero Engines AG Airfoil for a turbomachine with trailing edge profiling, blade and integrally bladed rotor
CN103527516A (en) * 2013-11-01 2014-01-22 赵瑞华 Noiseless multiple-effect energy-saving axial flow fan
WO2018158226A1 (en) * 2017-03-03 2018-09-07 Convotherm-Elektrogeräte Gmbh Fan wheel
DE102019105190A1 (en) * 2019-02-28 2020-09-03 Ebm-Papst St. Georgen Gmbh & Co. Kg Axial fan with noise-reducing fan blades

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JPS524949A (en) * 1975-07-02 1977-01-14 Hitachi Ltd Pump runner
JPS61279800A (en) * 1985-06-06 1986-12-10 Nissan Motor Co Ltd Fan

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010066140A1 (en) * 2008-12-11 2010-06-17 中山大洋电机股份有限公司 A fan blade of an axial fan or a centrifugal fan
CN102536898B (en) * 2010-12-29 2014-10-22 台达电子工业股份有限公司 Fan and impeller thereof
CN102536898A (en) * 2010-12-29 2012-07-04 台达电子工业股份有限公司 Fan and impeller thereof
CN102003409A (en) * 2010-12-30 2011-04-06 上海交通大学 Blade in corrugated structure for centrifugal fan of winder
CN102644623A (en) * 2012-04-16 2012-08-22 广东美的制冷设备有限公司 Axial-flow wind wheel
CN102678586A (en) * 2012-05-23 2012-09-19 浙江理工大学 Blade perforation type bladeless fan turbine device
US12095343B2 (en) 2012-11-06 2024-09-17 Milwaukee Electric Tool Corporation Electric motor for a power tool
CN103929011A (en) * 2012-11-06 2014-07-16 米沃奇电动工具公司 Electric Motor For A Power Tool
US10700575B2 (en) 2012-11-06 2020-06-30 Milwaukee Electric Tool Corporation Electric motor for a power tool
US10476350B2 (en) 2012-11-06 2019-11-12 Milwaukee Electric Tool Corporation Electric motor for a power tool
US11784518B2 (en) 2012-11-06 2023-10-10 Milwaukee Electric Tool Corporation Electric motor for a power tool
US11411467B2 (en) 2012-11-06 2022-08-09 Milwaukee Electric Tool Corporation Electric motor for a power tool
CN103867468B (en) * 2014-03-21 2015-12-16 宁波高新区金杉新能源科技有限公司 With the cold and hot type fan of air purification
CN103867468A (en) * 2014-03-21 2014-06-18 宁波高新区金杉新能源科技有限公司 Hot-and-cold fan with air purification function
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
CN107061357A (en) * 2017-01-20 2017-08-18 美的集团股份有限公司 Blade, centrifugal blower fan blade wheel, centrifugal blower and range hood
CN107061357B (en) * 2017-01-20 2019-10-18 美的集团股份有限公司 Blade, centrifugal blower fan blade wheel, centrifugal blower and range hood
CN107044442A (en) * 2017-04-26 2017-08-15 朱晓义 A kind of fan for producing bigger motive force
KR102092293B1 (en) * 2018-01-11 2020-03-23 엘지전자 주식회사 Axial flow fan
KR20190085735A (en) * 2018-01-11 2019-07-19 엘지전자 주식회사 Axial flow fan
CN110552852A (en) * 2019-10-17 2019-12-10 湖南中科宇能科技有限公司 Built-in manhole plate of wind power blade
CN110552852B (en) * 2019-10-17 2024-06-07 湖南中科宇能科技有限公司 Built-in manhole plate of wind power blade
CN113266601A (en) * 2021-06-18 2021-08-17 中山百得厨卫有限公司 Noise-reduction centrifugal wind wheel with opening holes on blades and range hood

Also Published As

Publication number Publication date
US20100150731A1 (en) 2010-06-17
ITMI20092129A1 (en) 2010-06-12
IT1396643B1 (en) 2012-12-14

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Open date: 20090527