WO1985002528A1 - Means for cleaning filters in wet and dry vacuum cleaners - Google Patents

Means for cleaning filters in wet and dry vacuum cleaners Download PDF

Info

Publication number
WO1985002528A1
WO1985002528A1 PCT/FI1984/000095 FI8400095W WO8502528A1 WO 1985002528 A1 WO1985002528 A1 WO 1985002528A1 FI 8400095 W FI8400095 W FI 8400095W WO 8502528 A1 WO8502528 A1 WO 8502528A1
Authority
WO
WIPO (PCT)
Prior art keywords
filter
motor
vacuum cleaner
cleaning
shut
Prior art date
Application number
PCT/FI1984/000095
Other languages
French (fr)
Inventor
Martti Ollila
Original Assignee
Martti Ollila
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 Martti Ollila filed Critical Martti Ollila
Priority to AT85900117T priority Critical patent/ATE50688T1/en
Priority to DE8585900117T priority patent/DE3481476D1/en
Publication of WO1985002528A1 publication Critical patent/WO1985002528A1/en

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
    • A47L9/20—Means for cleaning filters

Definitions

  • the present invention concerns a means for cleaning filters in wet and dry vacuum cleaners, said means consisting of at least one motor provided with a filter, in conjunction with the vacuum cleaner, and which draws the liquid, dust or equivalent matter into the tank of the vacuum cleaner.
  • a drawback of this kind of vacuum cleaners of prior art is that cleaning of the filters is carried out either by disposal or by manual cleaning. This is either expensive or unhygienic.
  • the object of the present invention is to provide a new kind of means for cleaning the filters in wet and dry vacuum cleaners.
  • the means of the invention is characterized in that for cleaning purposes a blowing circulation can be produced through the filter, opposite in direction to the normal direction in which the air passes through, using the own motor of the vacuum cleaner.
  • cleaning of the filters is substantially faster, and less handling of dust and refuse is required. The cleaning which takes place faster and with greater ease increases the effectiveness of the means in the working environment.
  • An advantageous embodiment of the invention in which the vacuum cleaner has two motors, each provided with a filter, is characterized in that in the suction air exit port of the vacuum cleaner there is a shut-off valve known in itself in the art, by closing which and operating only one motor a cleaning blowing circulation can be produced in the filter associated with the other motor. Since the vacuum cleaner is very often provided with two motors, the cleaning blowing circulation of the invention is therefore easy to accomplish. This is a solution which is not only reliable in operation but also advantageous.
  • Another embodiment of the invention wherein the vacuum cleaner has one motor with filter, is characterized in that in the duct between the filter and the motor has been inserted an auxiliary filter, provided with a shut-off valve, and another by-pass duct, provided with a shut-off valve, leading to the exhaust air space, whereby in the filter can be produced a cleaning blowing circulation by opening the shut-off valves.
  • This is another embodiment, which is likewise reliable in operation and applicable on vacuum cleaner types having one motor of which the direction of blowing cannot be changed.
  • Figs 1-4 present the means according to one embodiment.
  • Figs 5-6 present the means of another embodiment.
  • a two-motor vacuum cleaner is shown in normal use.
  • the filter on motor A is being cleaned and motor B is running, and the shut-off valve 6 is closed to the exhaust air.
  • Fig. 3 the filter on motor B is being cleaned and motor A is running, and the shut-off valve 6 is closed to the exhaust air.
  • Fig. 4 depicts the cleaning of the filter on motor A, but forced circulation is in use because the intake port 13 is closed and the shut-off valve 6 is closed. The same cleaning system operates even more efficiently when the number of motors is increased.
  • Fig. 5 shows a single-motor vacuum cleaner in normal use with the valve 22 of the auxiliary filter 19 closed and the valve 21 in the by-pass tube closed.
  • the exhaust valve 16 is open.
  • Fig. 6 depicts the cleaning of the filter of a single-motor vacuum cleaner through an auxiliary filter 19.
  • the shut-off valve 26 of the main filter 20 is closed and the valve 16 in the exhaust pipe is closed.
  • the shut-off valve 22 of the auxiliary filter 19 is open and the shut-off valve 21 is open. By these functions, an efficient forced circulation is achieved.
  • the shut-off valve is controlled by one push rod 17.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Electric Suction Cleaners (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
  • Filters For Electric Vacuum Cleaners (AREA)

Abstract

A means for cleaning the filters (8, 9, 20) in wet and dry vacuum cleaners consisting of at least one motor (3, 4, 27), provided with a filter, in conjunction with the vacuum cleaner and drawing liquid, dust or equivalent substance into the tank (10) of the vacuum cleaner. In the means of the invention, for cleaning purposes a blowing circulation can be produced through the filter (8, 9, 20), which is opposite in direction to the normal direction in which the air passes through, using the own motor (3, 4, 27) of the vacuum cleaner.

Description

Means for cleaning filters in wet and dry vacuum cleaners
The present invention concerns a means for cleaning filters in wet and dry vacuum cleaners, said means consisting of at least one motor provided with a filter, in conjunction with the vacuum cleaner, and which draws the liquid, dust or equivalent matter into the tank of the vacuum cleaner.
A drawback of this kind of vacuum cleaners of prior art is that cleaning of the filters is carried out either by disposal or by manual cleaning. This is either expensive or unhygienic. The object of the present invention is to provide a new kind of means for cleaning the filters in wet and dry vacuum cleaners. The means of the invention is characterized in that for cleaning purposes a blowing circulation can be produced through the filter, opposite in direction to the normal direction in which the air passes through, using the own motor of the vacuum cleaner. With the aid of the invention, cleaning of the filters is substantially faster, and less handling of dust and refuse is required. The cleaning which takes place faster and with greater ease increases the effectiveness of the means in the working environment.
An advantageous embodiment of the invention, in which the vacuum cleaner has two motors, each provided with a filter, is characterized in that in the suction air exit port of the vacuum cleaner there is a shut-off valve known in itself in the art, by closing which and operating only one motor a cleaning blowing circulation can be produced in the filter associated with the other motor. Since the vacuum cleaner is very often provided with two motors, the cleaning blowing circulation of the invention is therefore easy to accomplish. This is a solution which is not only reliable in operation but also advantageous.
Another embodiment of the invention, wherein the vacuum cleaner has one motor with filter, is characterized in that in the duct between the filter and the motor has been inserted an auxiliary filter, provided with a shut-off valve, and another by-pass duct, provided with a shut-off valve, leading to the exhaust air space, whereby in the filter can be produced a cleaning blowing circulation by opening the shut-off valves. This is another embodiment, which is likewise reliable in operation and applicable on vacuum cleaner types having one motor of which the direction of blowing cannot be changed.
The invention is described in the following with the aid of examples and referring to the attached drawings, in which
Figs 1-4 present the means according to one embodiment.
Figs 5-6 present the means of another embodiment.
In Fig. 1, a two-motor vacuum cleaner is shown in normal use. In Fig. 2, the filter on motor A is being cleaned and motor B is running, and the shut-off valve 6 is closed to the exhaust air. In Fig. 3, the filter on motor B is being cleaned and motor A is running, and the shut-off valve 6 is closed to the exhaust air. Fig. 4 depicts the cleaning of the filter on motor A, but forced circulation is in use because the intake port 13 is closed and the shut-off valve 6 is closed. The same cleaning system operates even more efficiently when the number of motors is increased.
Fig. 5 shows a single-motor vacuum cleaner in normal use with the valve 22 of the auxiliary filter 19 closed and the valve 21 in the by-pass tube closed. The exhaust valve 16 is open. Fig. 6 depicts the cleaning of the filter of a single-motor vacuum cleaner through an auxiliary filter 19. The shut-off valve 26 of the main filter 20 is closed and the valve 16 in the exhaust pipe is closed. The shut-off valve 22 of the auxiliary filter 19 is open and the shut-off valve 21 is open. By these functions, an efficient forced circulation is achieved. The shut-off valve is controlled by one push rod 17.
It is obvious to a person skilled in the art that the invention is not confined to the examples presented in the foregoing but may vary within the scope of the claims stated below.

Claims

C I aims
1. A means for cleaning the filters (8,9,20) in wet and dry vacuum cleaners consisting of at least one motor (3,4,27) provided with a filter, associated with the vacuum cleaner and drawing liquid, dust or equivalent substance into the tank (10) of the vacuum cleaner, characterized in that in the filter (8,9,20) can be produced a blowing circulation which is opposite in direction to the normal direction in which the air passes through, using the own motor (3,4,27) of the vacuum cleaner.
2. Means according to claim 1, said vacuum cleaner having two motors (3,4) provided with filter (8,9), characterized in that in the suction air exit port (7) of the vacuum cleaner there is a shut-off valve (6) known in itself in the art, by closing which and using only one motor a cleaning blowing circulation is achievable in the filter associated with the other motor.
3. Means according to claim 1, said vacuum cleaner having one motor (27) provided with filter (20), characterized in that in the duct between the filter (20) and the motor (27) has been inserted an auxiliaray filter (19) provided with a shut-off valve (23) and another by-pass duct (21), provided with a shut-off valve (22), leading into the exit air space (24) of the motor, whereby in the filter (20) a cleaning blowing circulation can be produced by opening the shut-off valves (22,23).
PCT/FI1984/000095 1983-12-16 1984-12-14 Means for cleaning filters in wet and dry vacuum cleaners WO1985002528A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AT85900117T ATE50688T1 (en) 1983-12-16 1984-12-14 MEANS FOR CLEANING FILTERS IN WET AND DRY VACUUM CLEANERS.
DE8585900117T DE3481476D1 (en) 1983-12-16 1984-12-14 AGENTS FOR CLEANING FILTERS IN WET AND DRY VACUUM CLEANERS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI834633A FI71660C (en) 1983-12-16 1983-12-16 SUGARE.
FI834633 1983-12-16

Publications (1)

Publication Number Publication Date
WO1985002528A1 true WO1985002528A1 (en) 1985-06-20

Family

ID=8518230

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI1984/000095 WO1985002528A1 (en) 1983-12-16 1984-12-14 Means for cleaning filters in wet and dry vacuum cleaners

Country Status (6)

Country Link
EP (1) EP0197036B1 (en)
CA (1) CA1260212A (en)
DE (1) DE3481476D1 (en)
FI (1) FI71660C (en)
IT (1) IT1178293B (en)
WO (1) WO1985002528A1 (en)

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0564817A1 (en) * 1992-03-27 1993-10-13 WAP Reinigungssysteme GmbH & Co. Wet-dry cleaner with deduster and additional electric tool
WO1997019630A1 (en) * 1995-11-30 1997-06-05 Alfred Kärcher GmbH & Co. Suction device for cleaning
EP0878163A1 (en) * 1997-05-15 1998-11-18 Tennant Company Scrubbing machine with means for continuous cleaning a filter
US5951746A (en) * 1995-11-30 1999-09-14 Alfred Karcher Gmbh & Co. Suction device for cleaning purposes
WO2005053497A1 (en) * 2003-12-04 2005-06-16 Aktiebolaget Electrolux Filter cleaning system for a vacuum cleaner
EP1629762A2 (en) * 2004-08-18 2006-03-01 Elektrostar Schöttl GmbH & Co. KG Suction device having a plurality of suction motors
WO2008091204A1 (en) * 2007-01-26 2008-07-31 Aktiebolaget Electrolux Vacuum cleaner
WO2008091203A1 (en) * 2007-01-26 2008-07-31 Aktiebolaget Electrolux Vacuum cleaner
WO2008154274A2 (en) * 2007-06-06 2008-12-18 Applied Magnetics Lab, Inc. Vacuum cleaners with self-cleaning filtration, other self-cleaning filters, self-cleaning valves for use in vacuum cleaners and other self-cleaning valves
WO2009031961A1 (en) * 2007-09-07 2009-03-12 Aktiebolaget Electrolux Vacuum cleaner
ITUD20080261A1 (en) * 2008-12-17 2010-06-18 Klindex Srl "VACUUM CLEANER"
WO2010121656A1 (en) * 2009-04-22 2010-10-28 Alfred Kärcher Gmbh & Co. Kg Method for cleaning two filters of a suction device for cleaning purposes, and suction device for performing the method
US8186005B2 (en) 2005-04-11 2012-05-29 Alfred Kaercher Gmbh & Co. Kg Vacuum cleaning device
US20120151710A1 (en) * 2010-07-19 2012-06-21 Glen Allen Yarbrough Reverse flow vacuum system
EA017962B1 (en) * 2008-11-28 2013-04-30 Гвидо Валентини Dust suction device with self-cleaning of the filters
ITUD20120044A1 (en) * 2012-03-19 2013-09-20 Klindex Srl "VACUUM CLEANER WITH FILTER CLEANING SYSTEM"
EP2662011A1 (en) * 2012-05-07 2013-11-13 Soteco S.p.A. Suction apparatus
US9271620B2 (en) 2012-03-27 2016-03-01 Daryl S. Meredith Vacuum
US9756999B2 (en) 2014-12-22 2017-09-12 Aktiebolaget Electrolux Vacuum cleaner filtration system with filter cleaning mode
WO2019161901A1 (en) * 2018-02-22 2019-08-29 Alfred Kärcher SE & Co. KG Vacuum appliance having a filter-cleaning device and a plurality of closure elements
US11547257B2 (en) 2020-02-04 2023-01-10 Dustless Depot, Llc Vacuum bag with inlet gasket and closure seal

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29918032U1 (en) * 1999-10-13 2001-03-01 Wap Reinigungssysteme Gmbh & Co, 89287 Bellenberg Filter cleaning with control of the valve flaps
PL2046183T3 (en) 2006-07-29 2011-02-28 Kaercher Gmbh & Co Kg Alfred Method for cleaning the filters of a vacuum cleaner and vacuum cleaner for carrying out the method
DE102009020769A1 (en) 2009-04-30 2010-11-04 Alfred Kärcher Gmbh & Co. Kg vacuum cleaning
EP2451332B1 (en) 2009-07-07 2018-11-14 Alfred Kärcher SE & Co. KG Suction apparatus for cleaning purposes
GB201700637D0 (en) 2017-01-13 2017-03-01 Black & Decker Inc Dust collection box
WO2019011429A1 (en) 2017-07-12 2019-01-17 Alfred Kärcher SE & Co. KG Suction appliance with at least two filters, and method for operating a suction appliance
CN112969395A (en) * 2018-09-21 2021-06-15 玛蒂·奥利拉 Vacuum cleaner with a vacuum cleaner head
IT202100027068A1 (en) * 2021-10-21 2023-04-21 Elsea S R L DEVICE FOR CLEANING THE SUCTION FILTERS OF A VACUUM CLEANER
EP4449961A1 (en) * 2023-04-19 2024-10-23 Hilti Aktiengesellschaft Vacuum cleaner with two turbines and method of operating the same

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE595686C (en) * 1931-12-25 1934-04-23 Inventia Patent Verwert Ges vacuum cleaner
DE600515C (en) * 1931-12-25 1934-07-25 Inventia Patent Verwert Ges vacuum cleaner
DE701338C (en) * 1937-11-27 1941-01-14 Joakim Lehmkuhl Cleaning device for a vacuum cleaner filter
CH241885A (en) * 1943-04-26 1946-04-15 Hoover Ltd Vacuum.

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE595686C (en) * 1931-12-25 1934-04-23 Inventia Patent Verwert Ges vacuum cleaner
DE600515C (en) * 1931-12-25 1934-07-25 Inventia Patent Verwert Ges vacuum cleaner
DE701338C (en) * 1937-11-27 1941-01-14 Joakim Lehmkuhl Cleaning device for a vacuum cleaner filter
CH241885A (en) * 1943-04-26 1946-04-15 Hoover Ltd Vacuum.

Cited By (38)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0564817A1 (en) * 1992-03-27 1993-10-13 WAP Reinigungssysteme GmbH & Co. Wet-dry cleaner with deduster and additional electric tool
WO1997019630A1 (en) * 1995-11-30 1997-06-05 Alfred Kärcher GmbH & Co. Suction device for cleaning
US5951746A (en) * 1995-11-30 1999-09-14 Alfred Karcher Gmbh & Co. Suction device for cleaning purposes
EP0878163A1 (en) * 1997-05-15 1998-11-18 Tennant Company Scrubbing machine with means for continuous cleaning a filter
US5901407A (en) * 1997-05-15 1999-05-11 Tennant Company Scrubbing machine with means for continuously cleaning a filter
WO2005053497A1 (en) * 2003-12-04 2005-06-16 Aktiebolaget Electrolux Filter cleaning system for a vacuum cleaner
US7951214B2 (en) 2003-12-04 2011-05-31 Ab Electrolux Filter cleaning system for a vacuum cleaner
AU2004294882B2 (en) * 2003-12-04 2010-12-09 Aktiebolaget Electrolux Vacuum cleaner
JP2007512896A (en) * 2003-12-04 2007-05-24 アクティエボラゲット エレクトロラックス Filter cleaning system for vacuum cleaner
CN100355386C (en) * 2004-08-18 2007-12-19 电星斯格特尔股份有限及两合公司 Absorbtion equipment with multiabsorbtion mortor
EP1629762A2 (en) * 2004-08-18 2006-03-01 Elektrostar Schöttl GmbH & Co. KG Suction device having a plurality of suction motors
EP1629762A3 (en) * 2004-08-18 2006-08-09 Elektrostar Schöttl GmbH & Co. KG Suction device having a plurality of suction motors
US8186005B2 (en) 2005-04-11 2012-05-29 Alfred Kaercher Gmbh & Co. Kg Vacuum cleaning device
WO2008091203A1 (en) * 2007-01-26 2008-07-31 Aktiebolaget Electrolux Vacuum cleaner
US8881342B2 (en) 2007-01-26 2014-11-11 Ab Electrolux Vacuum cleaner
US8726460B2 (en) 2007-01-26 2014-05-20 Ab Electrolux Vacuum cleaner
WO2008091204A1 (en) * 2007-01-26 2008-07-31 Aktiebolaget Electrolux Vacuum cleaner
AU2008208099B2 (en) * 2007-01-26 2012-06-28 Aktiebolaget Electrolux Vacuum cleaner
US8211216B2 (en) 2007-06-06 2012-07-03 Castronovo Charles A Vacuum cleaners with self-cleaning filtration, and other self-cleaning filters
WO2008154274A2 (en) * 2007-06-06 2008-12-18 Applied Magnetics Lab, Inc. Vacuum cleaners with self-cleaning filtration, other self-cleaning filters, self-cleaning valves for use in vacuum cleaners and other self-cleaning valves
US8029584B2 (en) 2007-06-06 2011-10-04 Castronovo Charles A Vacuum cleaners with self-cleaning filtration, and other self-cleaning filters
WO2008154274A3 (en) * 2007-06-06 2009-04-30 Applied Magnetics Lab Inc Vacuum cleaners with self-cleaning filtration, other self-cleaning filters, self-cleaning valves for use in vacuum cleaners and other self-cleaning valves
WO2009031961A1 (en) * 2007-09-07 2009-03-12 Aktiebolaget Electrolux Vacuum cleaner
US8695157B2 (en) 2007-09-07 2014-04-15 Ab Electrolux Vacuum cleaner with filter cleaning
EA017962B1 (en) * 2008-11-28 2013-04-30 Гвидо Валентини Dust suction device with self-cleaning of the filters
ITUD20080261A1 (en) * 2008-12-17 2010-06-18 Klindex Srl "VACUUM CLEANER"
RU2492909C2 (en) * 2009-04-22 2013-09-20 Альфред Кэрхер Гмбх & Ко. Кг Method of cleaning two filters of suction apparatus for cleaning purposes and suction apparatus to this end
CN102421503B (en) * 2009-04-22 2014-03-12 阿尔弗雷德·凯驰两合公司 Method for cleaning two filters of suction device for cleaning purposes, and suction device for performing method
WO2010121656A1 (en) * 2009-04-22 2010-10-28 Alfred Kärcher Gmbh & Co. Kg Method for cleaning two filters of a suction device for cleaning purposes, and suction device for performing the method
CN102421503A (en) * 2009-04-22 2012-04-18 阿尔弗雷德·凯驰两合公司 Method for cleaning two filters of a suction device for cleaning purposes, and suction device for performing the method
US20120151710A1 (en) * 2010-07-19 2012-06-21 Glen Allen Yarbrough Reverse flow vacuum system
ITUD20120044A1 (en) * 2012-03-19 2013-09-20 Klindex Srl "VACUUM CLEANER WITH FILTER CLEANING SYSTEM"
US9271620B2 (en) 2012-03-27 2016-03-01 Daryl S. Meredith Vacuum
EP2662011A1 (en) * 2012-05-07 2013-11-13 Soteco S.p.A. Suction apparatus
WO2013168071A1 (en) * 2012-05-07 2013-11-14 Soteco S.P.A. Sucking apparatus
US9756999B2 (en) 2014-12-22 2017-09-12 Aktiebolaget Electrolux Vacuum cleaner filtration system with filter cleaning mode
WO2019161901A1 (en) * 2018-02-22 2019-08-29 Alfred Kärcher SE & Co. KG Vacuum appliance having a filter-cleaning device and a plurality of closure elements
US11547257B2 (en) 2020-02-04 2023-01-10 Dustless Depot, Llc Vacuum bag with inlet gasket and closure seal

Also Published As

Publication number Publication date
CA1260212A (en) 1989-09-26
IT1178293B (en) 1987-09-09
EP0197036B1 (en) 1990-03-07
DE3481476D1 (en) 1990-04-12
FI834633A (en) 1985-06-17
EP0197036A1 (en) 1986-10-15
FI71660C (en) 1990-11-11
IT8449305A1 (en) 1985-08-21
FI834633A0 (en) 1983-12-16
IT8449305A0 (en) 1984-12-17
FI71660B (en) 1986-10-31

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