EP0197036B1 - Means for cleaning filters in wet and dry vacuum cleaners - Google Patents

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

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Publication number
EP0197036B1
EP0197036B1 EP19850900117 EP85900117A EP0197036B1 EP 0197036 B1 EP0197036 B1 EP 0197036B1 EP 19850900117 EP19850900117 EP 19850900117 EP 85900117 A EP85900117 A EP 85900117A EP 0197036 B1 EP0197036 B1 EP 0197036B1
Authority
EP
European Patent Office
Prior art keywords
filter
motor
shut
cleaner
tank
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.)
Expired - Lifetime
Application number
EP19850900117
Other languages
German (de)
French (fr)
Other versions
EP0197036A1 (en
Inventor
Martti Ollila
Original Assignee
OLLILA, Martti
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
Priority to FI834633 priority Critical
Priority to FI834633A priority patent/FI71660C/en
Application filed by OLLILA, Martti filed Critical OLLILA, Martti
Priority claimed from AT85900117T external-priority patent/AT50688T/en
Publication of EP0197036A1 publication Critical patent/EP0197036A1/en
Application granted granted Critical
Publication of EP0197036B1 publication Critical patent/EP0197036B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • A47L9/20Means for cleaning filters

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

  • The present invention relates to a vacuum cleaner having a tank with a suction air intake port, at least one filter positioned within the tank, at least one motor connected to said filter for producing suction on said filter and drawing liquid, dust or equivalent substance through said intake port into the tank, a suction air exhaust port downstream from said motor, and means for reversing the circulation in said filter, thereby producing an internal filter cleaning blowing circulation in said cleaner.
  • From DE-C-595 686 a vacuum cleaner with reversed air flow for cleaning filters is previously known. However, this previously known cleaner can only use a fraction of the suction air for cleaning purposes and has no internal air circulation. For this reason the known apparatus has a very poor efficiency.
  • Furthermore, from CH-A-241 885 a vacuum cleanerwith partially reversed and internal airflow for cleaning filters is previously known. This previously known cleaner is provided with a special cleaning nozzle and a complicated mechanism for rotating this nozzle around the surface of the filter, thereby cleaning portions of said filter surface during normal use of the cleaner by reversing the air flow through the filter in the portion that is covered by said nozzle.
  • The object of the present invention is to provide a wet or dry vacuum cleaner provided with a new kind of apparatus for cleaning the filters, which apparatus overcomes the drawbacks of the prior art.
  • The vacuum cleaner of the present invention is characterized by means for closing the suction air exhaust port of said cleaner.
  • An advantageous embodiment of the invention is characterized by two motors, each of said motors being connected to a respective one of two filters positioned within the tank for producing suction on the respective filter, both motors being connected to the same suction air exhaust port, and by a shut-off valve for closing the suction air exhaust port of said cleaner, whereby by using only one motor said internal filter cleaning blowing circulation is obtained in the filter of the other motor.
  • Another embodiment of the vacuum cleaner of the present invention is characterized in that one common motor is connected, by means of a main duct, to a main filter and, by means of an auxiliary duct, to an auxiliary filter for producing suction on both of said filters which are positioned within said tank, in that a by-pass duct connects the exhaust air space of said motor with said main duct between the main filter and the motor, the auxiliary duct and the by-pass duct being provided with respective shut-off valves, and in that said main filter is provided with a further shut-off valve, an internal filter cleaning blowing circulation being obtained by opening said first mentioned shut-off valves and closing said further shut-off valve and by closing the exhaust port of said cleaner.
  • The invention is described in the following with the aid of examples and referring to the attached drawings, in which:
    • Figs. 1-4 present one embodiment of the invention.
    • Figs. 5-6 present another embodiment of the invention.
  • 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 11 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 23 of the auxiliary filter 19 closed and the valve 22 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 28 of the main filter 20 is closed and the valve 16 in the exhaust pipe is closed. The shut-off valve 23 of the auxiliary filter 19 is open and the shut-off valve 22 is open. By these functions, an efficient forced circulation is achieved. The shut-off valve is controlled by one push rod 18.
  • 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 (3)

1. Vacuum cleaner having a tank (10) with a suction air intake port (11), at least one filter (8, 9; 20) positioned within the tank (10), at least one motor (3, 4; 27) connected to said filter (8,9; 20) for producing suction on said filter and drawing liquid, dust or equivalent substance through said intake port (11) into the tank (10), a suction air exhaust port (7; 17) downstream from said motor (3, 4; 27), and means (3, 4; 18, 22, 28) for reversing the circulation in said filter (8, 9; 20), thereby producing an internal filter cleaning blowing circulation in said cleaner, characterized by means (6; 16) for closing the suction air exhaust port (7; 17) of said cleaner.
2. Vacuum cleaner according to claim 1, characterized by two motors (3, 4), each of said motors (3, 4) being connected to a respective one of two filters (8, 9) positioned within the tank (10) for producing suction on the respective filter (8, 9), both motors being connected to the same suction air exhaust port (7; 17), and by a shut-off valve (6) for closing the suction air exhaust port (7) of said cleaner, whereby by using only one motor said internal filter cleaning blowing circulation is obtained in the filter of the other motor.
3. Vacuum cleaner according to claim 1, characterized in that one common motor (27) is connected, by means of a main duct, to a main filter (20) and, by means of an auxiliary duct (25), to an auxiliary filter (19) for producing suction on both of said filters (19, 20) which are positioned within said tank (10), in that a by-pass duct (21) connects the exhaust air space (24) of said motor (27) with said main duct between the main filter (20) and the motor (27), the auxiliary duct (25) and the by-pass duct (21) being provided with respective shut-off valves, and in that said main filter (20) is provided with a further shut-off valve (28), an internal filter cleaning blowing circulation being obtained by opening said first mentioned shut-off valves (22, 23) and closing said further shut-off valve (28) and by closing the exhaust port (16) of said cleaner.
EP19850900117 1983-12-16 1984-12-14 Means for cleaning filters in wet and dry vacuum cleaners Expired - Lifetime EP0197036B1 (en)

Priority Applications (2)

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

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT85900117T AT50688T (en) 1983-12-16 1984-12-14 Agents for cleaning filters in wet and dry vacuum cleaners.

Publications (2)

Publication Number Publication Date
EP0197036A1 EP0197036A1 (en) 1986-10-15
EP0197036B1 true EP0197036B1 (en) 1990-03-07

Family

ID=8518230

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19850900117 Expired - Lifetime EP0197036B1 (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 (3)

* 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 Filter cleaning with control of the valve flaps
US8474093B2 (en) 2009-07-07 2013-07-02 Alfred Kaercher Gmbh & Co. Kg Suction appliance for cleaning purposes
US8510904B2 (en) 2009-04-30 2013-08-20 Alfred Kaercher Gmbh & Co. Kg Suction cleaning apparatus

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4210061A1 (en) * 1992-03-27 1993-09-30 Wap Reinigungssysteme Vacuum cleaner with cleaning motor and an optionally connected power tool
DK0873075T3 (en) * 1995-11-30 2000-05-01 Alfred Korcher Gmbh & Co Suction for cleaning purposes
US5951746A (en) * 1995-11-30 1999-09-14 Alfred Karcher Gmbh & Co. Suction device for cleaning purposes
US5901407A (en) * 1997-05-15 1999-05-11 Tennant Company Scrubbing machine with means for continuously cleaning a filter
SE0401183D0 (en) * 2003-12-04 2004-05-06 Electrolux Ab Filter cleaning system for a vacuum cleaner
DE202004012911U1 (en) * 2004-08-18 2004-10-21 Electrostar Schöttle GmbH & Co. KG Suction device with several suction motors
DE102005017568A1 (en) 2005-04-11 2006-10-12 Alfred Kärcher Gmbh & Co. Kg vacuum cleaning
RU2403855C1 (en) 2006-07-29 2010-11-20 Альфред Кэрхер Гмбх Унд Ко.Кг Method for cleaning vacuum-cleaner filters and vacuum cleaner for implementation of method
SE531273C2 (en) * 2007-03-02 2009-02-10 Electrolux Ab Vacuum cleaner
SE531272C2 (en) 2007-03-02 2009-02-10 Electrolux Ab Vacuum cleaner
US8074671B2 (en) 2007-06-06 2011-12-13 Applied Magnetics Lab., Inc. Self-cleaning valves for use in vacuum cleaners and other self-cleaning valves
SE531095C2 (en) * 2007-09-07 2008-12-16 Electrolux Ab Vacuum cleaner
EA017962B1 (en) * 2008-11-28 2013-04-30 Гвидо Валентини Dust suction device with self-cleaning of the filters
IT1392426B1 (en) * 2008-12-17 2012-03-02 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
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
EP2662011B8 (en) * 2012-05-07 2015-10-07 IP Cleaning S.p.A. Suction 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

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE600515C (en) * 1931-12-25 1934-07-25 Inventia Patent Verwert Ges vacuum cleaner
DE595686C (en) * 1931-12-25 1934-04-23 Inventia Patent Verwert Ges vacuum cleaner
BE431318A (en) * 1937-11-27
US2406915A (en) * 1943-04-26 1946-09-03 Hoover Co Suction cleaner

Cited By (3)

* 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 Filter cleaning with control of the valve flaps
US8510904B2 (en) 2009-04-30 2013-08-20 Alfred Kaercher Gmbh & Co. Kg Suction cleaning apparatus
US8474093B2 (en) 2009-07-07 2013-07-02 Alfred Kaercher Gmbh & Co. Kg Suction appliance for cleaning purposes

Also Published As

Publication number Publication date
FI834633A0 (en) 1983-12-16
WO1985002528A1 (en) 1985-06-20
FI71660B (en) 1986-10-31
FI834633D0 (en)
CA1260212A (en) 1989-09-26
IT1178293B (en) 1987-09-09
DE3481476D1 (en) 1990-04-12
FI71660C (en) 1990-11-11
IT8449305D0 (en) 1984-12-17
CA1260212A1 (en)
FI834633A (en) 1985-06-17
EP0197036A1 (en) 1986-10-15

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