EP0826332A2 - Vorrichtung für einen Staubsauger - Google Patents

Vorrichtung für einen Staubsauger Download PDF

Info

Publication number
EP0826332A2
EP0826332A2 EP97850123A EP97850123A EP0826332A2 EP 0826332 A2 EP0826332 A2 EP 0826332A2 EP 97850123 A EP97850123 A EP 97850123A EP 97850123 A EP97850123 A EP 97850123A EP 0826332 A2 EP0826332 A2 EP 0826332A2
Authority
EP
European Patent Office
Prior art keywords
vacuum cleaner
chamber
motor
commutator
air
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.)
Withdrawn
Application number
EP97850123A
Other languages
English (en)
French (fr)
Other versions
EP0826332A3 (de
Inventor
Göran Sjöberg
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.)
Electrolux AB
Original Assignee
Electrolux AB
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 Electrolux AB filed Critical Electrolux AB
Publication of EP0826332A2 publication Critical patent/EP0826332A2/de
Publication of EP0826332A3 publication Critical patent/EP0826332A3/de
Withdrawn legal-status Critical Current

Links

Images

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

Definitions

  • the present invention relates to a device for a vacuum cleaner comprising a vacuum source in the form of a fan arrangement comprising a fan unit which, via a shaft, is driven by a motor unit in the form of a commutator motor.
  • Vacuum cleaners of the type mentioned above are previously known.
  • One problem in vacuum cleaners having commutator motors is that carbon particles are torn away from the carbon brushes during operation and these particles follow the air flow which is created by the fan and which is normally used to cool the electric motor.
  • special fine filters which can easily be exchanged are used at the outlet side of the vacuum cleaner.
  • the fine filters which are rather expensive, are quickly filled with carbon particles. The carbon particles discolor the filter and cause an increased flow resistance and, hence, need to be changed relatively often.
  • U.S. Patent No. 3,791,774 describes a vacuum cleaner having a commutator motor in which the carbon particles are collected on a plate inside the motor.
  • the cooling air flow through the motor takes up the carbon particles and the direction of the air flow is abruptly changed, causing the particles to be thrown against the plate on which they are collected.
  • this arrangement has certain disadvantages. Firstly, there is no means for taking care of the small carbon particles which will inevitably follow the air flow to the outlet. Secondly, cleaning of the plate is problematic since the plate is a part of the motor. Accordingly, the motor has to be removed from the vacuum cleaner in order to access the plate.
  • An object of the present invention is to provide an arrangement for a vacuum cleaner which takes care of the carbon particles from the brushes in a simple way by means of an air flow in close connection with the commutator, and delivers the particles to a place where they can be separated from the air flow.
  • This object is achieved by a small amount of air which simultaneously assists in cooling the commutator, the brush holders, and the bearings of the electric motor. Since the amount of air is very limited, the air is preferably taken in before the dust bag at the suction side of the fan without considerably reducing the suction efficiency of the nozzle. Thus, the carbon powder will also be drawn into the dust bag and be separated from the air flow in the bag, which means that the carbon powder will never reach the outlet filter, if any, on the pressure side of the fan. Thus, replacement of the dust bag means that the collected carbon powder is also removed from the vacuum cleaner.
  • a vacuum cleaner 10 comprises a shell 11 enclosing a chamber 12 for a dust container 13, a motor housing 14 enclosing a motor-fan unit 15, and a chamber 16 receiving a cable reel 17.
  • the dust container 13 is connected, via a sleeve 18, to a vacuum cleaner hose 19.
  • the vacuum cleaner hose 19 is connected to a tube shaft and a nozzle (not shown).
  • the dust container 13 comprises a plate 20 of comparatively stiff material to which an air-pervious bag 21, preferably of paper, is fixed.
  • the motor-fan unit 15 comprises a fan unit 22 and a motor unit 23.
  • the motor unit 23 includes a commutator motor with a conventional commutator-carbon brush arrangement 24.
  • the inlet side of the fan unit 22 communicates, via an inlet part 25, with the chamber 12.
  • the inlet part 25 is covered by a catastrophe filter 26.
  • the catastrophe filter prevents larger particles or debris from being drawn into the fan unit 22 if the dust container 13 should break.
  • the air flow leaving the fan unit 22 flows over the motor unit 23 in order to cool the motor before exiting to atmosphere via openings (not shown) in the shell.
  • the shell 11 also has one or more openings 27 through which air is drawn into the chamber 16 in order to cool the cable reel 17.
  • the fan unit 22 comprises a two stage fan with the impellers 28 placed in a fan housing 29 on a common shaft 30.
  • the shaft 30 is driven by the motor unit 23 provided with a commutator motor 24.
  • the commutator 24 is arranged in a closed pocket 31 which also comprises a bearing housing 32 for one of the bearings 33 on which the shaft 30 is supported.
  • the closed pocket 31 is thus limited or defined by the motor housing 34, the bearing housing 32 and an annular sealing gasket 35 surrounding the commutator 24.
  • the pocket 31 has two openings, each of which are provided with a nipple to which two conduits 36 and 37 are connected.
  • One conduit 36 is connected to the chamber 16, while the second conduit 37 is connected to the sleeve 18, as shown in FIG. 1.
  • the device operates in the following manner. During the operation of the vacuum cleaner, working air is drawn through the nozzle, and the hose 19, and into the dust bag 13. Dust is separated from the air in the bag 13 and the cleaned air flows into the fan unit 22. The cleaned or filtered air flows over the motor 23 and cools the motor before exiting to atmosphere via an optional fine filter.
  • the air flow could be created by supplying a minor part of the air flow from the pressure side of the fan to the pocket, or by using some kind of pump or fan and simultaneously placing a smaller filter for taking up the carbon particles after the pocket, as seen in the direction of flow.
  • the present invention also makes it possible to not use a separate outlet filter after the dust bag. Accordingly, there is no need for a careful sealing arrangement on the pressure side of the fan which, up to now, has been necessary in order to prevent the carbon particles from leaking out of the air channels between the fan and the outlet filter.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Nozzles For Electric Vacuum Cleaners (AREA)
  • Electric Suction Cleaners (AREA)
  • Motor Or Generator Cooling System (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP97850123A 1996-08-28 1997-08-19 Vorrichtung für einen Staubsauger Withdrawn EP0826332A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9603115 1996-08-28
SE9603115A SE509695C2 (sv) 1996-08-28 1996-08-28 Anordning vid en dammsugare

Publications (2)

Publication Number Publication Date
EP0826332A2 true EP0826332A2 (de) 1998-03-04
EP0826332A3 EP0826332A3 (de) 1999-09-15

Family

ID=20403679

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97850123A Withdrawn EP0826332A3 (de) 1996-08-28 1997-08-19 Vorrichtung für einen Staubsauger

Country Status (4)

Country Link
EP (1) EP0826332A3 (de)
JP (1) JPH1080381A (de)
PL (1) PL321798A1 (de)
SE (1) SE509695C2 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1086647A1 (de) * 1999-09-23 2001-03-28 Alfred Kärcher GmbH & Co. Staubsauger mit Filterkassette
US6481050B1 (en) 2000-07-19 2002-11-19 The Hoover Company Motor-fan cooling air directed into filter bag
US6813807B2 (en) 2000-04-06 2004-11-09 Reckitt Benckiser (Uk) Limited Vacuum cleaner having a secondary dirt and dust collection inlet
US8533906B2 (en) 2011-07-07 2013-09-17 Shop Vac Corporation Vacuum cleaner with recirculated cooling air
CN104511887A (zh) * 2013-09-30 2015-04-15 南京德朔实业有限公司 一种集尘附件

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PL422062A1 (pl) * 2017-06-29 2019-01-02 Michał Siemiński Hermetyczny odkurzacz

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7112062A (de) * 1971-09-02 1973-03-06
DK140453C (da) * 1974-12-21 1980-01-28 Vorwerk Co Interholding Stoevsuger
SE396171B (sv) * 1975-12-17 1977-09-05 Skf Ind Trading & Dev Kommutatormotor
DE3107879A1 (de) * 1981-03-02 1982-09-16 Vorwerk & Co Interholding Gmbh, 5600 Wuppertal Filter fuer den kuehlluftstrom von elektrokommutatormotoren fuer haushaltsgeraete
US4476410A (en) * 1983-08-12 1984-10-09 Wolcott John H Eddy current coupling with slip ring cleaning mechanism

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1086647A1 (de) * 1999-09-23 2001-03-28 Alfred Kärcher GmbH & Co. Staubsauger mit Filterkassette
US6813807B2 (en) 2000-04-06 2004-11-09 Reckitt Benckiser (Uk) Limited Vacuum cleaner having a secondary dirt and dust collection inlet
US6481050B1 (en) 2000-07-19 2002-11-19 The Hoover Company Motor-fan cooling air directed into filter bag
US6880201B2 (en) * 2000-07-19 2005-04-19 The Hoover Company Motor-fan cooling air directed into filter bag
US8533906B2 (en) 2011-07-07 2013-09-17 Shop Vac Corporation Vacuum cleaner with recirculated cooling air
CN104511887A (zh) * 2013-09-30 2015-04-15 南京德朔实业有限公司 一种集尘附件

Also Published As

Publication number Publication date
SE9603115D0 (sv) 1996-08-28
JPH1080381A (ja) 1998-03-31
PL321798A1 (en) 1998-03-02
EP0826332A3 (de) 1999-09-15
SE9603115L (sv) 1998-03-01
SE509695C2 (sv) 1999-02-22

Similar Documents

Publication Publication Date Title
US5737798A (en) Device for a vacuum cleaner and a method for cooling a motor
US4213224A (en) By-pass type portable vacuum cleaner
US6481050B1 (en) Motor-fan cooling air directed into filter bag
JP3580881B2 (ja) 乾式ひげそり装置のひげそりヘッドのクリーニング装置
US2327553A (en) Vacuum cleaner
GB2591017A (en) Vacuum cleaner
EP0650690B1 (de) Staubsaugergerät
EP0826332A2 (de) Vorrichtung für einen Staubsauger
EP0884018A1 (de) Staubsaugerdüse für Polsterbezugsmaterial
CA1176411A (en) Debris collecting device
GB2393143A (en) Hand held machine tool with detachable dust box
US2149135A (en) Vacuum cleaner
US6010561A (en) Vacuum cleaner and a filter assembly therefor
EP1042980B1 (de) Zyklonstaubsauger
US7008468B2 (en) HEPA vacuum recovery system
US20240188778A1 (en) Dust collecting attachment for blower
CN102908104B (zh) 电动吸尘器
CN114711678B (zh) 基站及清洁系统
GB2292883A (en) Odour absorbing system for a vacuum cleaner
JPH10117976A (ja) 電気掃除機
JP2004113468A (ja) 電気掃除機
JP3482145B2 (ja) 空気循環式電気掃除機
KR100662759B1 (ko) 연료전지 구동형 청소기
GB2402903A (en) Dust colection box for machine tool
KR100500797B1 (ko) 진공청소기

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): DE FR GB SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;RO;SI

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;RO;SI

AKX Designation fees paid

Free format text: DE FR GB SE

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20000316