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EP1627590A3 - Centrifugal fan and vacuum cleaner having the centrifugal fan - Google Patents

Centrifugal fan and vacuum cleaner having the centrifugal fan Download PDF

Info

Publication number
EP1627590A3
EP1627590A3 EP05291656A EP05291656A EP1627590A3 EP 1627590 A3 EP1627590 A3 EP 1627590A3 EP 05291656 A EP05291656 A EP 05291656A EP 05291656 A EP05291656 A EP 05291656A EP 1627590 A3 EP1627590 A3 EP 1627590A3
Authority
EP
European Patent Office
Prior art keywords
diffuser
impeller
air
centrifugal fan
driving motor
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
EP05291656A
Other languages
German (de)
French (fr)
Other versions
EP1627590B1 (en
EP1627590A2 (en
Inventor
Ki-Dong Kim
Kwang-Woon Ahn
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.)
LG Electronics Inc
Original Assignee
LG Electronics Inc
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 LG Electronics Inc filed Critical LG Electronics Inc
Publication of EP1627590A2 publication Critical patent/EP1627590A2/en
Publication of EP1627590A3 publication Critical patent/EP1627590A3/en
Application granted granted Critical
Publication of EP1627590B1 publication Critical patent/EP1627590B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/22—Mountings for motor fan assemblies
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L5/00—Structural features of suction cleaners
    • A47L5/12—Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum
    • A47L5/22—Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum with rotary 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
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/44—Fluid-guiding means, e.g. diffusers
    • F04D29/441—Fluid-guiding means, e.g. diffusers especially adapted for elastic fluid pumps
    • F04D29/444—Bladed diffusers

Landscapes

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

Abstract

A centrifugal fan (12) includes: a driving motor (58) for generating a rotational force; an impeller (62) connected with the driving motor by a rotational shaft (60) and generating an air blowing force; a diffuser (80) disposed at an outer circumferential surface of the impeller and increasing a constant pressure of air sent from the impeller; a partition plate (82) installed inside an impeller casing (52); and a rear vane (84) formed at a lower surface of the partition plate and guiding air discharged from the diffuser so as to pass through the driving motor. The diffuser is formed such that each blade (80a) is sloped downward from an inlet towards an outlet. Namely, two adjacent diffuser blades form an air flow path therebetween with each diffuser blade having are relatively greater width at an air inlet portion compared to the width at an air outlet portion. A pressure loss can be reduced and a suction force and efficiency of the fan can be enhanced.
EP20050291656 2004-08-13 2005-08-03 Centrifugal fan for a vacuum cleaner Expired - Lifetime EP1627590B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020040063904A KR20060015073A (en) 2004-08-13 2004-08-13 Centrifugal Blower for Vacuum Cleaners

Publications (3)

Publication Number Publication Date
EP1627590A2 EP1627590A2 (en) 2006-02-22
EP1627590A3 true EP1627590A3 (en) 2006-06-21
EP1627590B1 EP1627590B1 (en) 2009-10-14

Family

ID=36076664

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20050291656 Expired - Lifetime EP1627590B1 (en) 2004-08-13 2005-08-03 Centrifugal fan for a vacuum cleaner

Country Status (4)

Country Link
EP (1) EP1627590B1 (en)
KR (1) KR20060015073A (en)
CN (1) CN1734102A (en)
DE (1) DE602005017103D1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8152488B2 (en) 2006-07-12 2012-04-10 Johnson Electric S.A. Blower

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101152062B (en) * 2006-09-25 2010-09-29 财团法人工业技术研究院 self-propelled cleaning device
KR101975337B1 (en) * 2012-02-09 2019-05-07 엘지전자 주식회사 A vacuum suction unit and a vacuum cleaner comprising the vacuum suction unit
CN103321922B (en) * 2012-03-22 2016-11-23 德昌电机(深圳)有限公司 Blower fan and there is vacuum cleaner and the hand dryer of this blower fan
JP6748842B2 (en) * 2015-05-08 2020-09-02 パナソニックＩｐマネジメント株式会社 Electric blower air guide, electric blower, and vacuum cleaner
CN106958538B (en) * 2017-05-11 2019-12-31 美的集团股份有限公司 Centrifugal fan and dust collector with same
CN112610525B (en) * 2020-12-09 2023-04-07 江苏美的清洁电器股份有限公司 Fan for dust collector and dust collector
CN117139237A (en) * 2023-09-12 2023-12-01 台州市黄岩君茂机械科技有限公司 Photovoltaic panel cleaning machine with pressurized cleaning carousel

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59170495A (en) * 1983-03-18 1984-09-26 Matsushita Electric Ind Co Ltd electric blower
US4679990A (en) * 1984-12-28 1987-07-14 Matsushita Electric Industrial Co., Ltd. Electric blower
EP0385298A2 (en) * 1989-03-01 1990-09-05 Hitachi, Ltd. Electric blower having improved return passage for discharged air flow
WO1997019629A1 (en) * 1995-11-24 1997-06-05 Nilfisk A/S A blower for a vacuum cleaner
DE19605742A1 (en) * 1996-02-16 1997-08-21 Vorwerk Co Interholding Electric motor with impeller wheel
EP1334685A2 (en) * 2002-02-07 2003-08-13 Johnson Electric S.A. Blower motor

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59170495A (en) * 1983-03-18 1984-09-26 Matsushita Electric Ind Co Ltd electric blower
US4679990A (en) * 1984-12-28 1987-07-14 Matsushita Electric Industrial Co., Ltd. Electric blower
EP0385298A2 (en) * 1989-03-01 1990-09-05 Hitachi, Ltd. Electric blower having improved return passage for discharged air flow
WO1997019629A1 (en) * 1995-11-24 1997-06-05 Nilfisk A/S A blower for a vacuum cleaner
DE19605742A1 (en) * 1996-02-16 1997-08-21 Vorwerk Co Interholding Electric motor with impeller wheel
EP1334685A2 (en) * 2002-02-07 2003-08-13 Johnson Electric S.A. Blower motor

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 009, no. 025 (M - 355) 2 February 1985 (1985-02-02) *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8152488B2 (en) 2006-07-12 2012-04-10 Johnson Electric S.A. Blower

Also Published As

Publication number Publication date
EP1627590B1 (en) 2009-10-14
DE602005017103D1 (en) 2009-11-26
CN1734102A (en) 2006-02-15
EP1627590A2 (en) 2006-02-22
KR20060015073A (en) 2006-02-16

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