EP1618821A3 - 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
EP1618821A3
EP1618821A3 EP05291532A EP05291532A EP1618821A3 EP 1618821 A3 EP1618821 A3 EP 1618821A3 EP 05291532 A EP05291532 A EP 05291532A EP 05291532 A EP05291532 A EP 05291532A EP 1618821 A3 EP1618821 A3 EP 1618821A3
Authority
EP
European Patent Office
Prior art keywords
diffuser
air
centrifugal fan
partition plate
passed
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
EP05291532A
Other languages
German (de)
French (fr)
Other versions
EP1618821B1 (en
EP1618821A2 (en
Inventor
Ki-Dong Kim
Kwang-Woon Ahn
Ho-Seon Rew
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 EP1618821A2 publication Critical patent/EP1618821A2/en
Publication of EP1618821A3 publication Critical patent/EP1618821A3/en
Application granted granted Critical
Publication of EP1618821B1 publication Critical patent/EP1618821B1/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L5/00Structural features of suction cleaners
    • A47L5/12Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum
    • A47L5/22Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum with rotary fans
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00Details 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
    • A47L9/22Mountings for motor fan assemblies
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/40Casings; Connections of working fluid
    • F04D29/42Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/44Fluid-guiding means, e.g. diffusers
    • F04D29/441Fluid-guiding means, e.g. diffusers especially adapted for elastic fluid pumps
    • F04D29/444Bladed diffusers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05DINDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2250/00Geometry
    • F05D2250/50Inlet or outlet
    • F05D2250/52Outlet

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 partition plate (82) installed inside an impeller casing (52); a diffuser (80) formed at an edge portion of an upper surface of the partition plate and increasing a pressure of air which has passed through the impeller; 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; and an air guiding member (90) formed at certain intervals at an outer surface of the diffuser and guiding air which has passed through the diffuser toward the rear vane. Air which has passed through the diffuser is forcibly introduced to the lower side of the partition plate, so a flow loss caused as air is re-circulated to the upper side of the partition plate after passing through the diffuser can be reduced, and thus, a suction force and efficiency of the centrifugal fan can be enhanced.
EP05291532A 2004-07-20 2005-07-18 Centrifugal fan and vacuum cleaner having the centrifugal fan Expired - Fee Related EP1618821B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020040056491A KR20060007637A (en) 2004-07-20 2004-07-20 Guide vane structure of fan-motor for vacuum cleaner

Publications (3)

Publication Number Publication Date
EP1618821A2 EP1618821A2 (en) 2006-01-25
EP1618821A3 true EP1618821A3 (en) 2006-06-07
EP1618821B1 EP1618821B1 (en) 2009-10-28

Family

ID=35115756

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05291532A Expired - Fee Related EP1618821B1 (en) 2004-07-20 2005-07-18 Centrifugal fan and vacuum cleaner having the centrifugal fan

Country Status (4)

Country Link
EP (1) EP1618821B1 (en)
KR (1) KR20060007637A (en)
CN (1) CN100489316C (en)
DE (1) DE602005017332D1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0613796D0 (en) * 2006-07-12 2006-08-23 Johnson Electric Sa Blower
US9142804B2 (en) 2010-02-09 2015-09-22 Samsung Display Co., Ltd. Organic light-emitting device including barrier layer and method of manufacturing the same
KR101108166B1 (en) * 2010-02-09 2012-01-31 삼성모바일디스플레이주식회사 Organic luminescent device including barrier comprising silicon oxide layer and silicon rich silicon nitride layer
US20120186036A1 (en) * 2011-01-25 2012-07-26 Kegg Steven W Diffuser for a vacuum cleaner motor-fan assembly
JP2020112145A (en) * 2019-01-17 2020-07-27 日立グローバルライフソリューションズ株式会社 Electric blower and vacuum cleaner with the same
CN110336440B (en) * 2019-05-09 2020-08-11 宁波大华电器有限公司 Brushless motor for dust collector

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0525366A2 (en) * 1991-06-18 1993-02-03 Kuraco Limited Grease extractor
EP0556895A1 (en) * 1992-02-17 1993-08-25 Koninklijke Philips Electronics N.V. Device for displacing a gaseous or liquid medium, and vacuum cleaner comprising such a device
DE19606146A1 (en) * 1996-02-20 1997-08-21 Vorwerk Co Interholding High-speed electric motor
DE29717906U1 (en) * 1997-10-08 1999-02-04 Bosch Siemens Hausgeraete fan
EP1297772A2 (en) * 2001-09-26 2003-04-02 Lg Electronics Inc. Centrifugal blower for vacuum cleaner
GB2388017A (en) * 2002-04-30 2003-11-05 Johnson Electric Sa Diffuser plate

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0525366A2 (en) * 1991-06-18 1993-02-03 Kuraco Limited Grease extractor
EP0556895A1 (en) * 1992-02-17 1993-08-25 Koninklijke Philips Electronics N.V. Device for displacing a gaseous or liquid medium, and vacuum cleaner comprising such a device
DE19606146A1 (en) * 1996-02-20 1997-08-21 Vorwerk Co Interholding High-speed electric motor
DE29717906U1 (en) * 1997-10-08 1999-02-04 Bosch Siemens Hausgeraete fan
EP1297772A2 (en) * 2001-09-26 2003-04-02 Lg Electronics Inc. Centrifugal blower for vacuum cleaner
GB2388017A (en) * 2002-04-30 2003-11-05 Johnson Electric Sa Diffuser plate

Also Published As

Publication number Publication date
CN100489316C (en) 2009-05-20
CN1724878A (en) 2006-01-25
KR20060007637A (en) 2006-01-26
DE602005017332D1 (en) 2009-12-10
EP1618821B1 (en) 2009-10-28
EP1618821A2 (en) 2006-01-25

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