EP0942175A4 - Centrifugal blower, method of manufacturing the same, and air-conditioner provided with the same - Google Patents

Centrifugal blower, method of manufacturing the same, and air-conditioner provided with the same

Info

Publication number
EP0942175A4
EP0942175A4 EP98944261A EP98944261A EP0942175A4 EP 0942175 A4 EP0942175 A4 EP 0942175A4 EP 98944261 A EP98944261 A EP 98944261A EP 98944261 A EP98944261 A EP 98944261A EP 0942175 A4 EP0942175 A4 EP 0942175A4
Authority
EP
European Patent Office
Prior art keywords
rear edge
hub
same
air
vane
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.)
Granted
Application number
EP98944261A
Other languages
German (de)
French (fr)
Other versions
EP0942175B1 (en
EP0942175A1 (en
Inventor
Tsunehisa-Kanaoka-Kojo- Sanagi
Hideaki-Kanaoka-Kojo- Sakamoto
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.)
Daikin Industries Ltd
Original Assignee
Daikin Industries 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 Daikin Industries Ltd filed Critical Daikin Industries Ltd
Publication of EP0942175A1 publication Critical patent/EP0942175A1/en
Publication of EP0942175A4 publication Critical patent/EP0942175A4/en
Application granted granted Critical
Publication of EP0942175B1 publication Critical patent/EP0942175B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • F04D29/66—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
    • F04D29/667—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by influencing the flow pattern, e.g. suppression of turbulence
    • 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
    • F04D29/02—Selection of particular materials
    • F04D29/023—Selection of particular materials 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
    • F04D29/26—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
    • F04D29/30—Vanes
    • 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
    • F05D2240/304—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 trailing edge of a rotor blade

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Air-Conditioning Room Units, And Self-Contained Units In General (AREA)

Abstract

A centrifugal blower comprising a vane wheel (10) having a hub (11), a shroud (12) disposed so as to be spaced at a predetermined distance from and opposed to the hub, and a plurality of vanes (13) extending between an outer circumferential portion of the hub and that of the shroud and arranged substantially radially around the axis of the hub, wherein a rear edge (13b) of each of the vanes is formed in a saw-toothed shape (20) having a lengthwise extending wavy edge in which alternate projections and recesses extend in the widthwise direction of the vane. The rear edge (13b) of this structure has alternate large-length sections and small-length sections, so that the confluence at the rear edge of air flowing on the side of a pressure surface of the vane and air flowing on the side of a vacuum surface thereof is effected gradually along the whole length of the rear edge, whereby a pressure gradient and a speed loss of air flow due to the confluence at the rear edge become so small as to minimize the turbulence of the air flow at the rear edge, and reduce an air supply noise.
EP98944261A 1997-09-30 1998-09-28 Centrifugal blower, method of manufacturing the same, and air-conditioner provided with the same Expired - Lifetime EP0942175B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP26540197 1997-09-30
JP09265401A JP3092554B2 (en) 1997-09-30 1997-09-30 Centrifugal blower, method for manufacturing the same, and air conditioner equipped with the centrifugal blower
PCT/JP1998/004331 WO1999017027A1 (en) 1997-09-30 1998-09-28 Centrifugal blower, method of manufacturing the same, and air-conditioner provided with the same

Publications (3)

Publication Number Publication Date
EP0942175A1 EP0942175A1 (en) 1999-09-15
EP0942175A4 true EP0942175A4 (en) 2002-05-08
EP0942175B1 EP0942175B1 (en) 2004-11-24

Family

ID=17416662

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98944261A Expired - Lifetime EP0942175B1 (en) 1997-09-30 1998-09-28 Centrifugal blower, method of manufacturing the same, and air-conditioner provided with the same

Country Status (8)

Country Link
EP (1) EP0942175B1 (en)
JP (1) JP3092554B2 (en)
CN (1) CN1133819C (en)
AU (1) AU712784B2 (en)
DE (1) DE69827764T2 (en)
ES (1) ES2234153T3 (en)
HK (1) HK1021556A1 (en)
WO (1) WO1999017027A1 (en)

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JP2001234888A (en) * 2000-02-25 2001-08-31 Mitsubishi Heavy Ind Ltd Blower
KR100818429B1 (en) * 2000-12-04 2008-04-01 로버트 보쉬 코포레이션 High efficiency one-piece centrifugal blower
JP4736252B2 (en) * 2001-06-28 2011-07-27 ダイキン工業株式会社 Impeller of multi-blade fan and multi-blade fan equipped with the impeller
JP4432865B2 (en) * 2004-09-30 2010-03-17 ダイキン工業株式会社 Blower impeller and air conditioner using the same
JP4517955B2 (en) * 2005-06-24 2010-08-04 三菱電機株式会社 Cross-flow fan impeller and air conditioner
KR100719103B1 (en) 2005-09-26 2007-05-17 주식회사 에어로네트 Hybrid Design Method for High-efficient and Low-Noise Multiple-sectioned Impeller of Backward-bladed Turbo Blower
JP4973249B2 (en) 2006-03-31 2012-07-11 ダイキン工業株式会社 Multi-wing fan
US8225623B2 (en) 2007-03-14 2012-07-24 Mitsubishi Electric Corporation Centrifugal fan, air conditioner
US8256241B2 (en) 2007-03-14 2012-09-04 Mitsubishi Electric Corporation Air conditioner
CN101372987B (en) * 2007-08-24 2012-09-19 富准精密工业(深圳)有限公司 Fan vane structure and centrifugal fan having the same
CN101377206B (en) * 2007-08-31 2013-08-07 富准精密工业(深圳)有限公司 Fan vane structure and centrifugal fan having the same
JP5012836B2 (en) * 2007-11-26 2012-08-29 ダイキン工業株式会社 Centrifugal fan
JP4371171B2 (en) * 2008-05-09 2009-11-25 ダイキン工業株式会社 Cross flow fan and air conditioner equipped with the same
CN101749272B (en) * 2008-12-19 2011-09-28 常州祥明电机有限公司 Fan impeller
JP4994421B2 (en) * 2009-05-08 2012-08-08 三菱電機株式会社 Centrifugal fan and air conditioner
JP5164932B2 (en) 2009-06-11 2013-03-21 三菱電機株式会社 Turbofan and air conditioner
JP5143173B2 (en) * 2010-03-29 2013-02-13 三菱電機株式会社 Turbo fan and air conditioner indoor unit equipped with the same
JP6078945B2 (en) * 2011-11-04 2017-02-15 ダイキン工業株式会社 Centrifugal blower
CN102588337B (en) * 2012-02-29 2015-11-18 Tcl空调器(中山)有限公司 Axial wind wheel structure and axial fan
CN103511335B (en) * 2012-06-25 2016-08-24 珠海格力电器股份有限公司 Air conditioner, centrifugal fan and blade thereof
CN102996509A (en) * 2012-09-27 2013-03-27 宁波狮球通风机电有限公司 Centrifugal blower
CN102954041B (en) * 2012-11-20 2015-09-02 石狮市通达电机有限公司 Centrifugal blower and comprise the air conditioner of this kind of centrifugal blower
CN102996506A (en) * 2012-11-28 2013-03-27 李起武 Fan
CN103185028B (en) * 2013-04-03 2016-02-24 宁波朗迪叶轮机械有限公司 A kind of BI centrifugation blade
KR20140125522A (en) * 2013-04-19 2014-10-29 엘지전자 주식회사 turbo fan
CN104179724A (en) * 2013-05-23 2014-12-03 纬创资通股份有限公司 Fan
JP6042299B2 (en) * 2013-09-20 2016-12-14 株式会社クボタ Moor cutter blade
CN104564971B (en) * 2013-10-22 2017-05-10 珠海格力电器股份有限公司 Fan system and locking device thereof
CN103696985A (en) * 2013-11-30 2014-04-02 宁波方太厨具有限公司 Centrifugal fan impeller
US9765788B2 (en) * 2013-12-04 2017-09-19 Apple Inc. Shrouded fan impeller with reduced cover overlap
JP6203867B2 (en) * 2013-12-27 2017-09-27 本田技研工業株式会社 Impeller
CN105298907A (en) * 2014-06-19 2016-02-03 杨博胜 Fluid pumping low-confusion flow impeller
CN104500442A (en) * 2014-10-28 2015-04-08 佛山市禾才科技服务有限公司 Low-noise single type centrifugal fan
CN104454637A (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 centrifugal fan impeller for high-speed electric multiple unit cooling system
WO2016090417A1 (en) * 2014-12-12 2016-06-16 Aireng Pty Ltd Centrifugal fan
CN104852455A (en) * 2015-05-20 2015-08-19 徐伯琴 Blower impeller of sewage treatment equipment power system
CN104836323A (en) * 2015-05-20 2015-08-12 鲁霄钢 Buried sewage treatment equipment
CN104868577A (en) * 2015-05-20 2015-08-26 徐伯琴 Power system for sewage processing device
US10844876B2 (en) 2015-06-16 2020-11-24 ResMed Pty Ltd Impeller with inclined and reverse inclined blades
CN106979163A (en) * 2016-01-15 2017-07-25 台湾樱花股份有限公司 Smoke exhaust ventilator low-noise fan structure
JP6314998B2 (en) * 2016-01-18 2018-04-25 ダイキン工業株式会社 Centrifugal fan impeller
KR102592234B1 (en) * 2016-08-16 2023-10-20 한화파워시스템 주식회사 Centrifugal compressor
JP2019019758A (en) * 2017-07-18 2019-02-07 日本電産株式会社 Centrifugal fan impeller and centrifugal fan with centrifugal fan impeller
ES2892967T3 (en) 2017-07-26 2022-02-07 Mitsubishi Electric Corp Air conditioner
WO2019194638A1 (en) * 2018-04-06 2019-10-10 엘지전자 주식회사 Fan assembly and air conditioner
CN108425879B (en) * 2018-05-22 2023-11-21 乐清市永成机械有限公司 Impeller for vortex self-priming pump
FR3082897B1 (en) * 2018-06-20 2022-11-04 Air Liquide Medical Systems MICRO-BLOWER WITH WHEEL WITH SLOTTED EDGES FOR RESPIRATORY ASSISTANCE APPARATUS
CN109236735A (en) * 2018-10-19 2019-01-18 宁波奥克斯电气股份有限公司 A kind of centrifugal wind wheel and ceiling machine
EP3647603A1 (en) 2018-10-31 2020-05-06 Carrier Corporation Arrangement of centrifugal impeller of a fan for reducing noise
KR20210071374A (en) * 2019-12-06 2021-06-16 엘지전자 주식회사 apparatus for both humidification and air cleaning
CN114294086A (en) * 2021-12-15 2022-04-08 华南理工大学 Cooling fan with blade tip sawtooth structure and calculation method of aerodynamic noise of cooling fan
CN117028312B (en) * 2023-08-16 2024-07-16 深圳市百越汽车科技有限公司 Impeller structure and fan

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NL7015615A (en) * 1970-10-24 1972-04-26
GB2105791A (en) * 1981-09-22 1983-03-30 Gebhardt Gmbh Wilhelm >Centrifugal fan
DE4409629A1 (en) * 1993-03-25 1994-09-29 Ozen Sa Pump rotor and method for manufacturing it
US5558499A (en) * 1993-10-06 1996-09-24 Kobayashi; Takao Centrifugal blower wheel with backward curved blades

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JPS62185893U (en) * 1986-05-19 1987-11-26
JPH0721919Y2 (en) * 1986-05-19 1995-05-17 臼井国際産業株式会社 High speed axial fan
JPH0176596U (en) * 1987-11-11 1989-05-24
JP2940301B2 (en) * 1992-03-11 1999-08-25 ダイキン工業株式会社 Centrifugal fan
JPH0674195A (en) * 1992-08-25 1994-03-15 Mitsubishi Electric Corp Centrifugal fan and manufacture thereof
JP3448136B2 (en) * 1994-11-08 2003-09-16 三菱重工業株式会社 Propeller fan
AU4097297A (en) * 1996-10-15 1998-04-23 Craig Davies Pty. Ltd. Improved fan blade construction

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Publication number Priority date Publication date Assignee Title
NL7015615A (en) * 1970-10-24 1972-04-26
GB2105791A (en) * 1981-09-22 1983-03-30 Gebhardt Gmbh Wilhelm >Centrifugal fan
DE4409629A1 (en) * 1993-03-25 1994-09-29 Ozen Sa Pump rotor and method for manufacturing it
US5558499A (en) * 1993-10-06 1996-09-24 Kobayashi; Takao Centrifugal blower wheel with backward curved blades

Non-Patent Citations (1)

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Title
See also references of WO9917027A1 *

Also Published As

Publication number Publication date
WO1999017027A1 (en) 1999-04-08
EP0942175B1 (en) 2004-11-24
HK1021556A1 (en) 2000-06-16
JP3092554B2 (en) 2000-09-25
CN1133819C (en) 2004-01-07
AU712784B2 (en) 1999-11-18
EP0942175A1 (en) 1999-09-15
DE69827764T2 (en) 2005-12-29
ES2234153T3 (en) 2005-06-16
DE69827764D1 (en) 2004-12-30
AU9186298A (en) 1999-04-23
JPH11101198A (en) 1999-04-13
CN1241248A (en) 2000-01-12

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