EP0850009A1 - Aspirateur - Google Patents

Aspirateur

Info

Publication number
EP0850009A1
EP0850009A1 EP96928277A EP96928277A EP0850009A1 EP 0850009 A1 EP0850009 A1 EP 0850009A1 EP 96928277 A EP96928277 A EP 96928277A EP 96928277 A EP96928277 A EP 96928277A EP 0850009 A1 EP0850009 A1 EP 0850009A1
Authority
EP
European Patent Office
Prior art keywords
fluid
curved body
head
fan
acceleration means
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Withdrawn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
EP96928277A
Other languages
German (de)
English (en)
Other versions
EP0850009A4 (fr
Inventor
Terence Robert Day
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.)
Jetfan Australia Pty Ltd
Original Assignee
Jetfan Australia Pty 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 Jetfan Australia Pty Ltd filed Critical Jetfan Australia Pty Ltd
Publication of EP0850009A1 publication Critical patent/EP0850009A1/fr
Publication of EP0850009A4 publication Critical patent/EP0850009A4/fr
Withdrawn legal-status Critical Current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
    • A47L9/02—Nozzles
    • A47L9/06—Nozzles with fixed, e.g. adjustably fixed brushes or the like
    • 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
    • A47L9/02—Nozzles
    • A47L9/08—Nozzles with means adapted for blowing
    • 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
    • A47L9/10—Filters; Dust separators; Dust removal; Automatic exchange of filters
    • 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
    • A47L9/10—Filters; Dust separators; Dust removal; Automatic exchange of filters
    • A47L9/16—Arrangement or disposition of cyclones or other devices with centrifugal action
    • A47L9/1608—Cyclonic chamber constructions
    • 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
    • A47L9/10—Filters; Dust separators; Dust removal; Automatic exchange of filters
    • A47L9/16—Arrangement or disposition of cyclones or other devices with centrifugal action
    • A47L9/1658—Construction of outlets
    • 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
    • A47L9/10—Filters; Dust separators; Dust removal; Automatic exchange of filters
    • A47L9/16—Arrangement or disposition of cyclones or other devices with centrifugal action
    • A47L9/1683—Dust collecting chambers; Dust collecting receptacles

Definitions

  • TITLE A VACUUM CLEANER TECHNICAL FIELD This invention relates to a vacuum cleaner and particular to a floor vacuum cleaner for use on carpets and the like.
  • Vacuum cleaners develop suction by means of a fan which discharges a powerful stream of air from the rear end of the casing. This sets up a powerful inflowing current of air which carries along any dust particles from the carpet or floor to which a suction nozzle is applied.
  • the fan has a large number of blades set at an angle, the rotation setting up a flow of air in the axial direction.
  • the air stream is passed through a bag in which the dust is precipitated and collected without appreciably obstructing the air flow.
  • vacuum cleaners One disadvantage with vacuum cleaners is that the entire volume of air passes into the dust collecting chamber and must pass through the walls of the dust bag. Should the dust bag become too full or clogged, this will reduce the efficiency of the vacuum cleaner and can result in damage to the vacuum cleaner itself.
  • the efficiency of the vacuum cleaner is dependent upon two factors being the air flow rate and the suction power.
  • the suction performance is the product of two factors. Thus, when the flow rate is maximum, the suction is low and conversely when suction is high, the flow rate is low. For a vacuum cleaner to function efficiently, it is necessary for both the suction and the flow rate to be adequate.
  • the present invention is directed to a vacuum cleaner which can overcome the abovementioned disadvantages or provide the public with a useful or commercial choice.
  • the invention resides in a vacuum cleaner head comprising a curved body about which fluid can circulate, the curved body having a lower portion which in use is adapted to be adjacent the area to be vacuumed, the lower portion being dimensioned to provide a lower pressure surface, the curved body also having an upper portion dimensioned to provide a higher pressure surface, fluid acceleration means to accelerate the fluid about the curved body, a fluid stream splitter in the upper portion of the curved body to split the fluid into a recirculated portion which continues to move about the curved body, and a waste portion which passes into a dust collecting chamber and is exhausted therefrom.
  • the curved body may be in the form of a doughnut or toroid.
  • the curved body need not be symmetrical and may be slightly elliptical in cross- section.
  • the curved body need not be entirely curved, and portions of the curved body may be straight if desired.
  • the fluid acceleration means is positioned in a lower portion of the central passageway, that is the portion closer towards the carpet or ground surface to be cleaned.
  • the fluid acceleration means may itself comprise a fan which can be of the bladed type.
  • the fan may be driven by a motor such as an electric motor and this may be positioned above the fan and within the central passageway.
  • the motor may be housed within a sealed compartment within the central passageway there being sufficient room to allow fluid to circulate about the curved body and between the curved body and the housing in which the motor is positioned.
  • the lower end of the curved body may have a blowing slot. If the curved body is a doughnut or toroidal shape, the lower end of the passageway may be sealed off with just a small, typically annular slot being present to allow fluid to blow through the slot and over the low pressure surface.
  • the upper portion of the curved body has a fluid stream splitter which may comprise a disc or a curved member.
  • the splitter can divide the fluid into a portion which recirculates about the curved body, and a split off waste portion which passes into a dust collecting chamber.
  • the fluid acceleration means is positioned in the central passageway below the fluid splitter and above the fluid blowing slot.
  • FIG. 1 there is shown a vacuum cleaner head 10 to which a handle 11 can be attached in the usual manner, the handle not forming any part of the invention.
  • Vacuum cleaner head has an outer housing 12 which can be made from plastic or metal.
  • Outer housing 12 can be made from plastic or metal.
  • a curved body 15 in the form of a doughnut or toroid.
  • Body 15 can be mounted inside the housing using connecting struts (not shown) or other types of mountings.
  • Body 15 by being doughnut or toroidal in shape has a central passageway 16.
  • Body 15 also has a lower portion 17, an upper portion 18, an inner portion 19 and an outer portion 20.
  • Fan 21 Inside central passageway 16 is an air acceleration means in the form of a bladed fan 21.
  • Fan 21 has a number of blades 22 attached to a hub 23 the hub being attached to a shaft 24 which is driven by a motor 25.
  • Motor 25 is housed within a housing 26 to protect it from dust and debris and also to silence the motor.
  • the fan is preferably of a design which is described in my earlier international patent application PCT/AU93/00581.
  • Plate 27 (which could be an extension of hub 23 or a separately formed plate) .
  • Plate 27 extends across the lower portion of central passageway 16 but is spaced inwardly from the inner ends of body 15 to define an annular blowing slot 28.
  • the blowing slot ensures that fluid is blown over the lower pressure surface area 17 and by virtue of the fluid being blown through slot 28, it will adhere to curved body 15 and will follow the surface of the body by virtue of the coanda effect.
  • Fluid splitter 31 can be seen as an annular shoulder and it functions to split the fluid into a recirculating portion which moves back into central passage 16 and a waste portion which will contain most of the dirt dust and the fresh air.
  • the waste portion passes over the top of fluid splitter 31 and into a collection chamber 32.
  • the collection chamber 32 is positioned above central passageway 16 and may include a removable dirt or dust bag. Excess air passes through opening 33 which contains a filter screen to allow air to exhaust while preventing any dirt or dust from doing the same.
  • the dirt or dust which passes up through internal passage 30 is heavier than the air circulating about curved body 15 and has too much momentum to pass under fluid splitter 31.
  • the dirt and dust therefore passes over the top of fluid splitter 31 and into dust collection chamber 32.
  • Waste air passes through opening 33 which has a filter extending across it.
  • annular blowing slot 28 blows fluid over a surface 15 of convex curvature and increasing surface area 17. In passing over this surface at high speed, adjacent air is entrained into the flow carrying with it the particulate matter to be discarded.
  • the air plus particulate matter enters the internal passageway 30 and passes up through the passageway to annular shoulder (or fluid splitter) 31.
  • the curve of the shoulder can be designed to be too tight
  • Table 1 shows a comparison between a conventional vacuum cleaner and a vacuum cleaner the subject of this invention.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Nozzles For Electric Vacuum Cleaners (AREA)
  • Separating Particles In Gases By Inertia (AREA)
  • Jet Pumps And Other Pumps (AREA)
  • Filters For Electric Vacuum Cleaners (AREA)

Abstract

Cette invention concerne une tête d'aspirateur (10) comportant un corps de forme arrondie (15) à l'intérieur duquel peut circuler un fluide, ledit corps possédant une partie inférieure (17) qui est conçue pour être adjacente, en cours d'utilisation, à la surface à nettoyer, ladite partie inférieure étant dimensionnée de façon à offrir une surface basse pression, ledit corps de forme arrondie ayant également une partie supérieure (18) dimensionnée de façon à offrir une surface haute pression. La tête d'aspirateur comporte également un organe d'accélération du fluide (21), qui sert à accélérer le fluide circulant à l'intérieur du corps arrondi, ainsi qu'un séparateur de flux (31) fluidique situé dans la partie supérieure du corps arrondi et destiné à la séparation du fluide en une partie recyclée qui continue à circuler dans le corps arrondi et en une partie à rejeter qui passe à l'intérieur d'une chambre collectrice de la poussière (32) de laquelle elle est ensuite évacuée.
EP96928277A 1995-09-04 1996-09-04 Aspirateur Withdrawn EP0850009A4 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AUPN0518/99 1995-09-04
AUPN5189A AUPN518995A0 (en) 1995-09-04 1995-09-04 New vacuum device
PCT/AU1996/000547 WO1997008983A1 (fr) 1995-09-04 1996-09-04 Aspirateur

Publications (2)

Publication Number Publication Date
EP0850009A1 true EP0850009A1 (fr) 1998-07-01
EP0850009A4 EP0850009A4 (fr) 1998-12-02

Family

ID=3789517

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96928277A Withdrawn EP0850009A4 (fr) 1995-09-04 1996-09-04 Aspirateur

Country Status (9)

Country Link
EP (1) EP0850009A4 (fr)
JP (1) JPH11514896A (fr)
KR (1) KR19990044371A (fr)
CN (1) CN1195274A (fr)
AU (1) AUPN518995A0 (fr)
BR (1) BR9610364A (fr)
CA (1) CA2231001A1 (fr)
DE (1) DE850009T1 (fr)
WO (1) WO1997008983A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001037687A (ja) * 1999-08-02 2001-02-13 Matsushita Electric Ind Co Ltd 電気掃除機
GB2355391A (en) 1999-10-20 2001-04-25 Notetry Ltd Cyclonic vacuum cleaner with a horizontal, or substantially horizontal, separator
CN111227709B (zh) * 2020-03-09 2021-12-03 江苏奥纳麦格科技有限公司 一种纺织工业吸尘器

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7613475A (nl) * 1976-12-03 1978-06-06 Philips Nv Stofzuiger.
DE3171910D1 (en) * 1980-06-19 1985-09-26 Rotork Appliances Ltd Vacuum cleaning appliance
US5096475A (en) * 1989-10-18 1992-03-17 Rexair, Inc. Separator for a vacuum cleaner system
WO1992003690A1 (fr) * 1990-08-08 1992-03-05 Fassauer Arthur L Appareil sur coussin d'air

Also Published As

Publication number Publication date
WO1997008983A1 (fr) 1997-03-13
EP0850009A4 (fr) 1998-12-02
AUPN518995A0 (en) 1995-09-28
JPH11514896A (ja) 1999-12-21
BR9610364A (pt) 1999-07-06
DE850009T1 (de) 1999-05-20
KR19990044371A (ko) 1999-06-25
CN1195274A (zh) 1998-10-07
CA2231001A1 (fr) 1997-03-13

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Legal Events

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18D Application deemed to be withdrawn

Effective date: 19990820