EP2046181A1 - Vacuum cleaner - Google Patents
Vacuum cleanerInfo
- Publication number
- EP2046181A1 EP2046181A1 EP06776508A EP06776508A EP2046181A1 EP 2046181 A1 EP2046181 A1 EP 2046181A1 EP 06776508 A EP06776508 A EP 06776508A EP 06776508 A EP06776508 A EP 06776508A EP 2046181 A1 EP2046181 A1 EP 2046181A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- vacuum cleaner
- suction
- air
- sealing mat
- cleaner according
- 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
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
- A47L9/0081—Means for exhaust-air diffusion; Means for sound or vibration damping
-
- 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
-
- 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
- A47L9/28—Installation of the electric equipment, e.g. adaptation or attachment to the suction cleaner; Controlling suction cleaners by electric means
- A47L9/2889—Safety or protection devices or systems, e.g. for prevention of motor over-heating or for protection of the user
Definitions
- the invention relates to a vacuum cleaner with a control unit and a dirt collecting container, which has a suction inlet and is connected via a suction with a suction unit in flow communication, which is connected via at least one air duct with at least one air outlet.
- dirt and preferably liquid can be sucked by applying the dirt collector using the suction unit with negative pressure, so that forms a suction flow from the suction inlet through the dirt collecting through the suction to the suction unit. From the suction unit, the sucked air can be passed through an air duct to an air outlet of the vacuum cleaner.
- an electronic control system is used, which in many cases has heat-dissipating power semiconductors and / or electromechanical relays.
- the operation of the suction unit is associated with a certain noise, which should be kept as low as possible, and the use of the control electronics is associated with a certain heat generation, which should also be kept low, and in the case of excessive heat to ensure that heat-sensitive components of the vacuum cleaner will not be damaged.
- Object of the present invention is to develop a vacuum cleaner of the generic type such that in a structurally simple manner the noise can be kept low and heat-sensitive components can be protected from damage.
- a vacuum cleaner of the type mentioned according to the invention that at least one air duct is sealed by means of a sound-insulating sealing mat, which is made of a flame-retardant material and covers the electrical control unit.
- the sealing mat not only makes it possible to design the air channel flow-tight and compensate for example, manufacturing tolerances in the manufacture of the air duct, but in addition, the sealing mat forms a fire protection in the event of heavy heating of the control electronics.
- the sealing mat covers the control electronics and is made of a flame-retardant material.
- the sealing mat thus assumes several functions. It forms a sound insulation, so that the noise of the vacuum cleaner is reduced. In addition, it allows a flow-tight completion of the air duct, whereby manufacturing tolerances of the air duct can be compensated. In addition, the sealing mat forms a fire protection, which ensures that with a strong warming of the control electronics of the vacuum cleaner does not easily start on fire.
- the sealing mat can be simple Be mounted so that the vacuum cleaner according to the invention can be configured in a structurally simple manner such that it shows a relatively low noise and has a reliable fire protection.
- the sealing mat is elastically deformable. This gives the possibility of compressing the sealing mat during assembly, where it is then eager to take their original shape again and thereby creates a fluid-tight against adjacent walls and edges of the vacuum cleaner.
- the sealing mat is made of a foamed Duroplast- material.
- Thermosets are cross-linked plastics that do not melt even at relatively high temperatures.
- the sealing mat covers the control electronics, so that reliable fire protection is ensured in the case of a strong heating of the control electronics due to the flame-retardant property of the sealing mat.
- the sealing mat is made of a foamed thermoset material from the group of aminoplasts.
- foamed thermosets based on PUR material could also be used.
- the sealing mat has a thermal conductivity of less than 0.04 W / mK, in particular less than 0.035 W / mk.
- the thermal conductivity is measured at a temperature of 10 ° C and is determined according to the DIN standard 52612. It has been found that a sealing mat with such a thermal conductivity value is particularly suitable for protecting the remaining components of the vacuum cleaner against damage in the event of a strong heating of the control electronics.
- the vacuum cleaner on a housing part with a hood which covers a partition wall part, wherein the partition wall part has a bottom, projecting from the spaced apart two partitions defining therebetween an air duct, and wherein the sealing mat between the hood and is arranged the partitions.
- the partition wall part may have a U-shaped profile, which is formed by the bottom and the two partitions and which is covered by the cover with the interposition of the sealing mat.
- the control electronics are preferably arranged laterally next to one of the partitions outside the air duct. It can comprise at least one printed circuit board on which electrical components are arranged. The circuit board can be fixed to the partition. It is particularly advantageous if the control electronics are connected to at least one cooling element, for example a cooling plate, which protrudes into the air duct.
- the suction unit is covered by the sealing mat.
- the sealing mat not only extends over the air duct and the control electronics, but also covers the suction unit. This makes it possible to keep the noise of the vacuum cleaner particularly low. It is advantageous if the suction unit is arranged in an upper part of the vacuum cleaner, which can be placed on the dirt collecting container.
- the suction unit comprises a forced-air-cooled electric motor, which is connected via a first air duct with a cooling air outlet, and a suction turbine driven by the electric motor, which is connected via a second air passage with a Saugluftauslass, wherein the sealing mat seals the first and the second air passage.
- a suction flow to the suction unit can be achieved starting from the suction inlet through the dirt collecting container and the suction line.
- the sucked air can be discharged via the second air duct to the Saugluftauslass the vacuum cleaner.
- this is supplied independently of the suction air cooling air, which can be discharged via the first air duct and the cooling air outlet to the environment.
- the suction unit can thereby have a considerable suction capacity. Since the sound insulating sealing mat seals both the first and the second air duct and the air ducts preferably covered over the entire surface, the flow of cooling air and the suction air can be optimized in terms of the lowest possible noise of the vacuum cleaner.
- the electronic control system is electrically connected to at least one electromagnetic closing valve, which closes a forced air inlet, wherein the external air intake, the side facing away from the dirt collector side of a filter arranged in the flow path between the dirt collector and the suction unit for impingement with external air is abruptly acted upon.
- at least one electromagnetic closing valve which closes a forced air inlet, wherein the external air intake, the side facing away from the dirt collector side of a filter arranged in the flow path between the dirt collector and the suction unit for impingement with external air is abruptly acted upon.
- the outside of the dirt collecting container side of the filter can be acted upon by external air by the electromagnetic closing valve is opened, so that via the outside air inlet foreign air can flow into the suction.
- the filter cleaning is controlled by the control electronics, which therefore has a not inconsiderable heat development.
- the risk of damage to components of the vacuum cleaner in case of improper overheating of the control electronics is kept low by the present invention used for use sealing mat.
- an electromagnet for closing the closing valve can be acted upon with electricity, wherein the power supply is timed interruptible.
- the electromagnet of the closing valve is acted upon by the control unit with an excitation current, so that a magnetic field is formed, which holds the closing valve in its closed position. If a filter cleaning be made, the excitation current is interrupted by the control unit for a short time. This has the consequence that the magnetic field of the electromagnet breaks down and thereby opens the closing valve. Foreign air can then act suddenly on the side facing away from the dirt collector side of the filter and thereby mechanically shake the filter.
- control unit can be flowed through in the counter-current direction, that is, in contrast to the prevailing during the normal suction suction flow of external air, thereby effectively to be cleaned.
- an exciter current is permanently provided by the control unit. This can result in a considerable heating of the control unit. Since, however, the control unit according to the invention is covered by the flame-retardant sealing mat having a low thermal conductivity, there is practically no risk that the heat development of the control unit will impair other components of the vacuum cleaner.
- Figure 1 a schematic sectional view of a vacuum cleaner according to the invention
- Figure 2 is a fragmentary plan view of the vacuum cleaner with the hood removed
- FIG. 3 shows a sectional view along the line 3-3 in Figure 2.
- a vacuum cleaner 10 is shown schematically with a dirt collecting container 12, on which an upper part 14 is placed, which receives a suction unit 16.
- the dirt collecting container 12 has a suction inlet 18, to which a suction hose, not shown in the drawing, can be connected.
- a suction nozzle can be connected.
- the suction hose is connected to a machining tool, such as a drilling unit or a milling unit, so that dust that accumulates during operation of the machining tool, can be sucked.
- the upper part 14 forms a suction outlet 22 for the dirt collecting container 12.
- a pleated filter 24 is held, to which a suction line in the form of a suction channel 26 connects.
- the dirt collecting container 12 can be acted upon by the vacuum unit 16 with negative pressure via the suction channel 26 and the pleated filter 24, so that a symbolized in Figure 1 by the arrows 28 suction flow, under the action of dirt in the dirt collector 12 can be sucked.
- the fold filter 24 the dirt particles from the suction flow 28 can be deposited.
- a closing valve 30 is arranged in the upper part 14, which comprises a stationary in the upper part 14 positioned valve holder 32 which forms a valve seat and cooperates with a movable valve body in the form of a circular valve disk 34.
- the valve disk 34 is acted upon by a closing spring 36 with a closing force in the direction of the valve holder 32.
- the closing spring 36 is clamped between a plate-like, a plurality of flow passages, fixedly arranged in the upper part 14 filter holder 38 and the valve plate 34.
- the valve holder 32 In a central region, the valve holder 32 carries an electromagnet 40 with a solenoid 42. On the valve plate 34 is a solenoid 40 associated magnetizable element in the form of an iron plate 44 which abuts the front side of the electromagnet 40 in the closed position of the closing valve 30.
- the electromagnet 40 is acted upon via connecting lines, not shown in the drawing, from an electronic control unit 48 illustrated in FIGS. 2 and 3, so that a magnetic field is formed and the iron plate 44 is subjected to a magnetic holding force. If the filter 24 to be cleaned, the power supply of the electromagnet 40 is interrupted.
- valve disc 34 lifts off from the associated valve seat due to the pressure difference acting on it, which results from the pressure of the external air supplied via a lateral opening 51 to the closing valve 30 and the negative pressure prevailing in the suction channel 26.
- external air can flow from the side opening 51 to the side facing away from the dirt collecting container 12 side of the filter 34 and this act on a pressure surge.
- the valve disk 34 is returned to its associated state by the closing spring 36 after only a very short time, preferably after a time of less than 0.5 s. Neten valve seat fed back, so that the further supply of external air can be prevented and the normal suction operation can be resumed.
- the control electronics 48 is arranged as well as the suction unit 16 in the upper part 14 of the vacuum cleaner 10.
- the upper part 14 comprises a partition wall part 53 formed integrally as a plastic molded part, which forms a bottom 54, from which an inner partition wall 55 and an outer partition wall 56 project upwards at a distance from one another.
- the partitions 55, 56 have a labyrinth-like course and form on one side of the vacuum cleaner 10, a first air passage in the form of a cooling air passage 58, which opens into a cooling air outlet 59, and on the other side of the vacuum cleaner 10 define the two partitions 55 and 56 between them a second air channel in the form of a suction air duct 61, which opens into a Saugluftauslass 62.
- the Saugluftauslass 62 is disposed on the cooling air outlet 59 opposite side of the vacuum cleaner 10.
- the suction unit 16 includes a suction turbine 64, which is rotated by a fresh air-cooled electric motor 65 in rotation.
- the cooling air of the electric motor 65 can be discharged to the environment via the cooling air passage 58 and the cooling air outlet 59, and the suction air sucked from the suction turbine 64 through the suction inlet 18 and the dirt collecting tank 12 and the suction passage 26 can be supplied through the suction air passage 61 and the suction air outlet 62 the environment will be delivered.
- the control electronics 48 comprises a plurality of electronic components 74, which are arranged on a printed circuit board 76.
- the printed circuit board 76 is on the outside side of the outer partition 56 is positioned.
- a cooling element in the form of a cooling plate 72 protrudes into the cooling air channel 58 through an opening, not shown in the drawing, of the outer partition wall 56.
- the cooling plate 72 is thermally conductively connected to components 74 of the control electronics 48 and enables effective cooling of the components 74.
- the partition wall part 53 of the upper part 14 is covered by a hood 68.
- a sound-insulating sealing mat 70 is arranged, which is made of a flame-retardant material, namely of a foamed thermoset material from the group of aminoplasts.
- the sealing mat 70 extends over the suction unit 16, the cooling air channel 58 and the suction air channel 61, and also extends beyond the arranged on the outside of the outer partition 56 control electronics 48. It is elastically deformable and allows a structurally simple way, manufacturing tolerances between the partition wall part 53 and the hood 68 compensate.
- FIG. 1 illustrates a plan view of the vacuum cleaner 10 in the region of the suction unit 16, wherein the hood 68 is removed, so that the position of the sealing mat 70 can be seen.
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DK06776508.1T DK2046181T3 (en) | 2006-07-29 | 2006-07-29 | Vacuum cleaner |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/EP2006/007543 WO2008014796A1 (en) | 2006-07-29 | 2006-07-29 | Vacuum cleaner |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2046181A1 true EP2046181A1 (en) | 2009-04-15 |
EP2046181B1 EP2046181B1 (en) | 2010-05-05 |
Family
ID=37768733
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06776508A Not-in-force EP2046181B1 (en) | 2006-07-29 | 2006-07-29 | Vacuum cleaner |
Country Status (7)
Country | Link |
---|---|
US (1) | US20090193612A1 (en) |
EP (1) | EP2046181B1 (en) |
CN (1) | CN101489459B (en) |
AT (1) | ATE466513T1 (en) |
DE (1) | DE502006006920D1 (en) |
DK (1) | DK2046181T3 (en) |
WO (1) | WO2008014796A1 (en) |
Families Citing this family (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008014798A1 (en) | 2006-07-29 | 2008-02-07 | Alfred Kärcher Gmbh & Co. Kg | Method for cleaning the filters of a vacuum cleaner and vacuum cleaner for carrying out the method |
EP2046182B1 (en) | 2006-07-29 | 2014-05-21 | Alfred Kärcher GmbH & Co. KG | Vacuum cleaner with a self-cleaning filter apparatus |
EP2373204B1 (en) * | 2008-11-05 | 2015-07-29 | Aktiebolaget Electrolux | Vacuum cleaner |
EP2451332B1 (en) | 2009-07-07 | 2018-11-14 | Alfred Kärcher SE & Co. KG | Suction apparatus for cleaning purposes |
EP2640247B1 (en) * | 2010-11-16 | 2019-04-24 | Alfred Kärcher SE & Co. KG | Vacuum cleaner with at least one suction aggregate |
EP2734098B1 (en) * | 2011-07-22 | 2016-09-07 | Alfred Kärcher GmbH & Co. KG | Power sweeper having pressure vessel for cleaning the filter |
WO2014094834A1 (en) * | 2012-12-18 | 2014-06-26 | Alfred Kärcher Gmbh & Co. Kg | Self-propelled and self-steering floor cleaning device |
DE102013019224A1 (en) * | 2013-11-15 | 2015-05-21 | Nilfisk-Advance A/S | Vacuum cleaner with pivoting flap |
CN105559692A (en) * | 2014-10-10 | 2016-05-11 | 江苏美的清洁电器股份有限公司 | Dust cup component of dust collector and dust collector provided with dust cup component |
DE102015100426A1 (en) * | 2015-01-13 | 2016-07-14 | Alfred Kärcher Gmbh & Co. Kg | Cleaning device and method for reducing noise in a cleaning device |
EP3244784B1 (en) * | 2015-01-13 | 2021-10-06 | Alfred Kärcher SE & Co. KG | Suction device |
DK3244785T3 (en) * | 2015-01-13 | 2019-07-01 | Kaercher Alfred Se & Co Kg | SUSPENSION AND PROCEDURE FOR OPERATION OF A SUSPENSION |
JP6259034B2 (en) * | 2016-09-02 | 2018-01-10 | シャープ株式会社 | Electric vacuum cleaner |
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 |
JP6523421B2 (en) * | 2017-12-07 | 2019-05-29 | シャープ株式会社 | Electric vacuum cleaner |
JP7103373B2 (en) * | 2017-12-14 | 2022-07-20 | 工機ホールディングス株式会社 | Dust collector |
CN108852151A (en) * | 2018-07-21 | 2018-11-23 | 苏州欧圣电气股份有限公司 | A kind of dust catcher |
JP7300581B2 (en) | 2018-11-20 | 2023-06-30 | パナソニックIpマネジメント株式会社 | vacuum cleaner |
DE102021121707A1 (en) * | 2021-08-20 | 2023-02-23 | Festool Gmbh | suction device |
Family Cites Families (20)
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US2591567A (en) * | 1948-05-29 | 1952-04-01 | Electrolux Corp | Vacuum cleaner |
US4124915A (en) * | 1977-08-15 | 1978-11-14 | S/V Tool Company, Inc. | Combination scraper and squeegee |
AT369764B (en) * | 1980-10-27 | 1983-01-25 | Oesterr Hiag Werke Ag | INSULATING PLATE AND METHOD FOR THE PRODUCTION THEREOF |
US4329161A (en) * | 1981-05-18 | 1982-05-11 | Jack Osborn | Valve system for vacuum cleaner |
WO1986001989A1 (en) * | 1984-10-03 | 1986-04-10 | Arnold Plooy | Vacuum cleaner system |
JPH0665332B2 (en) * | 1987-05-06 | 1994-08-24 | 株式会社日立製作所 | Vacuum cleaner |
US5144716A (en) * | 1988-10-07 | 1992-09-08 | Hitachi, Ltd. | Electric cleaner, method for producing same and mount base and bumper for electric cleaner |
CN1494861A (en) * | 1993-07-16 | 2004-05-12 | 株式会社金星社 | Suction force controller for vacuum dust catcher |
CN2175569Y (en) * | 1993-11-17 | 1994-08-31 | 北京市海淀区康得机电技术开发公司 | Automatic walking industrial dust suction car |
JPH0838401A (en) * | 1994-07-28 | 1996-02-13 | Tec Corp | Electric apparatus |
US5737797A (en) * | 1995-11-28 | 1998-04-14 | Iowa State University Research Foundation, Inc. | Central vacuum with acoustical damping |
GB9808583D0 (en) * | 1998-04-22 | 1998-06-24 | Wills James K S | Apparatus for cleaning carpets and upholstery |
US6305048B1 (en) * | 1999-03-03 | 2001-10-23 | Harold Salisian | Electric backpack blower and accessory operator |
US6330732B1 (en) * | 2000-07-19 | 2001-12-18 | Te-Hsi Liu | Dust collect device for an eraser |
KR100377015B1 (en) * | 2000-08-07 | 2003-03-26 | 삼성광주전자 주식회사 | Cyclone dust-collecting apparatus for Vacuum Cleaner |
KR100398685B1 (en) * | 2000-11-27 | 2003-09-19 | 삼성광주전자 주식회사 | Cyclone dust-collecting apparatus for vacuum cleaner |
KR100437369B1 (en) * | 2001-01-10 | 2004-06-25 | 삼성광주전자 주식회사 | Cyclone dust-collecting apparatus for Vacuum Cleaner |
KR100433408B1 (en) * | 2002-03-05 | 2004-05-31 | 삼성광주전자 주식회사 | Vacuum cleaner |
KR100545269B1 (en) * | 2003-09-09 | 2006-01-24 | 삼성광주전자 주식회사 | Noise Reducing Structure of Motor for Vacuum cleaner |
DE102005017568B4 (en) * | 2005-04-11 | 2024-04-25 | Alfred Kärcher SE & Co. KG | Vacuum cleaner |
-
2006
- 2006-07-29 CN CN200680055373.2A patent/CN101489459B/en not_active Expired - Fee Related
- 2006-07-29 DE DE502006006920T patent/DE502006006920D1/en active Active
- 2006-07-29 DK DK06776508.1T patent/DK2046181T3/en active
- 2006-07-29 AT AT06776508T patent/ATE466513T1/en active
- 2006-07-29 WO PCT/EP2006/007543 patent/WO2008014796A1/en active Application Filing
- 2006-07-29 EP EP06776508A patent/EP2046181B1/en not_active Not-in-force
-
2009
- 2009-01-27 US US12/322,067 patent/US20090193612A1/en not_active Abandoned
Non-Patent Citations (1)
Title |
---|
See references of WO2008014796A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE502006006920D1 (en) | 2010-06-17 |
DK2046181T3 (en) | 2010-07-26 |
CN101489459B (en) | 2011-02-09 |
WO2008014796A1 (en) | 2008-02-07 |
CN101489459A (en) | 2009-07-22 |
EP2046181B1 (en) | 2010-05-05 |
US20090193612A1 (en) | 2009-08-06 |
ATE466513T1 (en) | 2010-05-15 |
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