EP2734098B1 - Balayeuse avec conteneur sous pression pour le nettoyage du filtre - Google Patents

Balayeuse avec conteneur sous pression pour le nettoyage du filtre Download PDF

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Publication number
EP2734098B1
EP2734098B1 EP11737933.9A EP11737933A EP2734098B1 EP 2734098 B1 EP2734098 B1 EP 2734098B1 EP 11737933 A EP11737933 A EP 11737933A EP 2734098 B1 EP2734098 B1 EP 2734098B1
Authority
EP
European Patent Office
Prior art keywords
external air
filter
hood
sweeping machine
accordance
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.)
Not-in-force
Application number
EP11737933.9A
Other languages
German (de)
English (en)
Other versions
EP2734098A1 (fr
Inventor
Frank Nonnenmann
Erik HÖRNLEN
Florian ABT
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.)
Alfred Kaercher SE and Co KG
Original Assignee
Alfred Kaercher SE and Co KG
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 Alfred Kaercher SE and Co KG filed Critical Alfred Kaercher SE and Co KG
Publication of EP2734098A1 publication Critical patent/EP2734098A1/fr
Application granted granted Critical
Publication of EP2734098B1 publication Critical patent/EP2734098B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • A47L9/10—Filters; Dust separators; Dust removal; Automatic exchange of filters
    • A47L9/102—Dust separators
    • 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
    • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/24—Floor-sweeping machines, motor-driven
    • 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
    • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/40—Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
    • A47L11/4027—Filtering or separating contaminants or debris
    • A47L11/4033—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
    • A47L9/20—Means for cleaning filters

Definitions

  • the invention relates to a sweeper with a rotating driven sweeping brush, a hopper and a suction fan for sucking dusty air and with at least one filter which is arranged in the flow path between the sweeping brush and the suction fan, for separating dust and dirt particles from the sucked air wherein the filter via a suction line with the suction fan and via a foreign air line and at least one external air valve with a pressure vessel in flow communication and for cleaning with stored in the pressure vessel and standing under overpressure foreign air can be acted upon.
  • Such sweepers are for example from the US 4,637,825 A known. With their help, a bottom surface can be swept, with gross debris is transferred from the rotating driven sweeping brush in the hopper. When sweeping a dry ground surface, there is often a considerable amount of dust. To counteract this, the sweeper has a suction fan, which is in flow communication with the sweeping brush, so that dust-laden air can be sucked off and thereby the dust development can be reduced. On its way from the sweeping brush to the suction fan, the extracted air flows through at least one filter on which dust and dirt particles entrained by the air can be separated off.
  • a sweeper in which the filter is in the form of a cylindrical filter cartridge.
  • An external air supply pipe immersed on the clean side into the filter cartridge, so that over the foreign air supply pipe, which has a plurality of nozzle-like openings, pressurized external air of the clean side of the filter can be supplied.
  • the external air supply pipe is connected via a hose line with a connecting piece in flow connection, to which a compressed air source can be connected. This makes it possible to pressurize the clean side of the filter via the compressed air supply pipe with pressurized external air.
  • the external air can flow through the filter cartridge against the current prevailing during the normal sweeping flow direction and thereby replace adhering to the dirty side of the filter cartridge dust and dirt particles.
  • Object of the present invention is therefore to develop a sweeper of the type mentioned in such a way that the at least one filter with a minimum amount of foreign air, which has the lowest possible pressure, can be effectively cleaned.
  • the external air duct comprises a hood, which covers a filter on the clean side and forms a first, adjoining the clean side of the filter portion of the suction line.
  • the hood not only serves to provide a flow connection between the pressure vessel and the filter to be cleaned off, but also forms a first section of the suction line adjoining the filter on the clean side.
  • This has the advantage that no separate flow path has to be provided for the suction line, so that the hood can extend directly to the clean side of the filter to be cleaned and thereby can hit the outside air directly on the clean side of the filter without the outside air for the suction line must flow through the required space between the hood and the clean side of the filter.
  • the hood By means of the hood, the external air is thus led to the clean side of the filter.
  • the at least one filter is preferably designed as a flat fold filter. It can be configured in the form of a filter cartridge.
  • the shape of the filter-side end region of the hood can be adapted to the shape of the circumference of the flat pleated filter. For example, it may be provided that the filter-side end region of the hood, just like the flat-fold filter, has a rectangular shape.
  • the hood has a forced air inlet, which is associated with an external air valve, and an external air outlet, which is associated with the filter, wherein the opening cross section of the external air outlet is at least half as large as the clean side of the filter.
  • the opening cross section of the external air outlet is the same size as the clean side of the filter.
  • the external air outlet is located on a clean-side edge of the filter.
  • the hood thus extends directly to the clean side edge of the filter. This has the advantage that the hood not only has the function to supply external air directly to the clean side of the filter to be cleaned off, but also the hood has the function of a stop element for the filter. The determination of the filter in the sweeper can thus be done by means of the hood, which covers the filter on the clean side.
  • the hood has a curved hood section between an external air inlet assigned to the external air valve and an external air outlet assigned to the filter.
  • This makes it possible to provide a different orientation in the room for the outside air inlet as for the outside air outlet and yet the outside air can be guided from the outside air inlet to the outside air outlet with very low flow losses.
  • the outside air inlet may be arranged in a plane which is inclined to a plane defined by the external air outlet. The orientation of the outside air inlet can thus be independent of the orientation of the Fremd Kunststoffauslasses the hood. This gives the possibility to make the sweeper particularly compact.
  • the hood may have a region with a reduced flow cross-section in the area between the outside air inlet and the outside air outlet. It is advantageous if the flow cross section at the narrowest Location of the hood is at least 20% of the flow cross-section of the Fremd Kunststoffauslasses. It is particularly favorable if the minimum flow cross section of the hood amounts to at least 50% of the flow cross section of the external air outlet.
  • the hood can be designed, for example, in the form of a double funnel by having an external air inlet region, followed by a region with reduced flow cross-section in the direction of the filter to be cleaned, followed in turn by a filter outlet region with an enlarged flow cross-section in the direction of the filter to be cleaned.
  • the example arcuate hood portion between the outside air inlet and the outside air outlet is curved by 90 °. This makes it possible to arrange a valve seat of the external air valve in a vertically oriented plane, whereas the clean side of the filter, which is favorably designed as a flat fold filter, is oriented horizontally.
  • a particularly space-saving arrangement of the external air valve is achieved in a preferred embodiment of the invention in that the hood has a forced air inlet portion into which an external air valve is at least partially immersed.
  • the external air valve is at least partially disposed in the outside air inlet portion of the hood.
  • the forced air inlet section thus at least partially surrounds the external air valve.
  • the external air inlet section receives a movable valve body of the external air valve.
  • the valve body is movable back and forth between a closed position and an open position of the external air valve. He can, for example, in the form of a swiveling Valve flap or be configured in the form of a linearly movable valve disc.
  • the external air valve may be configured, for example, as a solenoid valve.
  • a solenoid valve Conveniently, it comprises a valve disk, which rests in a closed position on a valve seat and occupies a distance to the valve seat in an open position.
  • the valve disk By means of a closing spring and / or under the action of the holding force of an electromagnet, the valve disk can be held in its closed position.
  • the valve plate can be moved in the direction away from the valve seat, so that it releases the flow connection between the pressure vessel and the hood. It may, for example, be provided that the valve disk is held in a closed position by a solenoid which is acted upon by current.
  • the electromagnet can be connected to an electrical control unit of the sweeper and by means of the control unit, the excitation current of the electromagnet can be interrupted at intervals.
  • the valve disk can then automatically go into its open position due to the pressure acting on it. This can form a pressure pulse which is transmitted via the hood to the clean side of the filter, so that the filter is mechanically shaken and at least part of the incident on the clean side of external air can flow through the filter against the forming during normal sweeping flow direction.
  • the excitation current can be made available again by the electrical control unit, so that the valve disk is held in its closed position again.
  • the hood advantageously comprises a Fremd Kunststoffauslassabites, which forms the first portion of the suction channel and is followed by the at least a second portion of the suction channel in the direction of the suction fan.
  • the hood is advantageously designed in several parts.
  • the hood is formed as a one-piece plastic molded part.
  • the sweeper has only a single filter, which is directly connected via the hood with the pressure vessel in flow communication.
  • the sweeper has a plurality of filters which are in fluid communication with the pressure vessel via an external air line and are covered on the clean side by a hood of the external air line.
  • This makes it possible to arrange a plurality of filters in the flow direction parallel to one another between the sweeping brush and the suction fan, via which the sucked air can be freed from dust and dirt particles.
  • the total available filter area can be increased thereby.
  • these are each covered by a hood over which the filters are in fluid communication with an external air valve and also with the suction fan.
  • the at least one external air valve is conveniently arranged directly on a wall of the pressure vessel. As a result, pressure losses, which suffers the foreign air on its way from the pressure vessel to the external air valve can be avoided. In addition, this allows a particularly compact design of the sweeper.
  • the pressure vessel on opposite side walls each have an external air opening, which can be closed by an external air valve, wherein the external air valve in each case an external air line connects with a hood which covers the outside air valve associated filter on the clean side.
  • the pressure vessel is thus positioned between two external air valves, which are each assigned to a filter.
  • the external air valves each comprise a valve seat which is arranged in a vertical plane.
  • the pressure prevailing in the pressure vessel of the external air is advantageously at most 1 bar.
  • the overpressure is thus relatively low. Due to the provision of the hood, which covers the filter to be cleaned on the clean side and over which the external air is supplied to the filter, despite the relatively low pressure of the external air, an effective filter cleaning can be achieved.
  • the provision of an overpressure of at most 1 bar has the additional advantage that the valve opening of the at least one external air valve can be formed relatively large area.
  • the large valve opening in turn ensures that a strong pressure pulse can be generated when the external air valve is opened for a short time. This pressure pulse supports the cleaning of the filter.
  • the pressure in the pressure vessel is a maximum of 500 mbar.
  • the overpressure in the pressure vessel is 250 mbar to 400 mbar, for example 350 mbar.
  • the at least one external air valve is designed as a safety valve that opens automatically when a maximum allowable pressure in the pressure vessel is reached.
  • An additional safety valve can be omitted.
  • the at least one external air valve assumes two functions in such an embodiment. On the one hand, it allows the short-term provision of a pressure pulse for cleaning a filter. On the other hand, it limits the maximum permissible pressure in the pressure vessel. If the pressure in the pressure vessel exceeds a maximum permissible value, then the at least one Frem Kunststoffventil automatically transitions to its open position, so that external air subject to overpressure can escape from the pressure vessel.
  • the provision of several external air valves has the advantage that a first filter can be cleaned while at the same time having at least one second filter a sweeping operation is maintained. External air, which flows through the first filter during the cleaning process, can be sucked in by the suction fan via the second filter, so that there is no danger that the external air will pass through the sweeping brush to the outside.
  • the at least one filter is conveniently interchangeable. It is advantageous if the filter is exchangeable on the clean side.
  • the filter can be removed in such a configuration by the user on the clean side of a filter holder. The risk of the user coming into contact with the dust and dirt adhering to the filter is thereby reduced.
  • the pressure vessel and the at least one external air valve are arranged on a pivotably mounted cover part of a housing of the sweeper.
  • the cover part can be pivoted back and forth between a closed position in which it rests on a lower part of the housing and ensures the flow connection between the at least one filter and the suction fan, and an open position in which it releases the at least one filter on the clean side. This facilitates the replacement of the at least one filter and also allows easy access to each hood covering a filter.
  • the hood is also held on the cover part of the housing of the sweeping machines. In the open position of the cover part thus the hood for the user, for example, for inspection is accessible.
  • a sweeping machine 10 is shown schematically with a chassis 12 and a driver's seat 14 and a housing 16 in which in a region behind the driver's seat 14, a suction fan 18 is arranged and on its underside a rotationally driven about a horizontal axis 20 Sweeping brush is mounted in the form of a sweeping roller 22.
  • the drive of the sweeping roller 22 takes place with the help of a known per se and therefore to achieve a better overview in the drawing, not shown engine. This may be, for example, an internal combustion engine or an electric motor.
  • the drive motor of the sweeping roller 22 can simultaneously form the travel drive for the mobile sweeper 10.
  • the sweeping machine 10 comprises a disc brush 24, which can be arranged in a front region of the sweeper 10 below the chassis 12 and can also be driven to rotate.
  • the axis of rotation of the disc brush 24 is oriented substantially vertically.
  • the sweeping machine 10 comprises a hopper 28, which is releasably held on a housing lower part 30 and receives coarse debris, which is received by means of the sweeping roller 22 from a bottom surface.
  • a suction duct 32 which starts from the sweeping roller 22 and extends to a suction opening 34 of the housing lower part 30.
  • a holding plate 36 is arranged with a first suction opening 38 and a second suction opening 40.
  • a first filter 42 is arranged and at the second suction opening 40, a second filter 44 is arranged.
  • the two filters 42 and 44 are configured in an identical manner in each case as a flat fold filter and each form a filter cartridge with a circumferential filter edge 46 which protrudes on the outside via a filter material 48 and rests on an opening edge 50 of the first suction port 38 and the second suction port 40. This is especially true FIG. 3 clear.
  • the two filters 42 and 44 each have a sweeping roller 22 facing dirty side 52 and a sweeping roller 22 facing away from the clean side 54.
  • the lower housing part 30 In the longitudinal direction of the sweeper 10 between the filters 42, 44 and the suction fan 18, the lower housing part 30 has a passage 56 which extends to the suction fan 18.
  • the lower housing part 30 forms an obliquely oriented to the vertical baffle 58.
  • a cover part 60 On the upper side is hinged to the lower housing part of the sweeping machine 10, a cover part 60, which is aligned about a parallel to the rotation axis 20 of the sweeping roller 22 aligned pivot axis 62 between an in FIG. 1 shown closed position and an open position not shown in the drawing back and forth is pivotable.
  • the cover part 60 has a receptacle 64 which opens in the direction of the housing lower part 30 and in which a pressure container 66 is arranged is.
  • the pressure vessel 66 has a first side wall 68 and a second side wall 70 opposite thereto.
  • the two side walls 68, 70 are configured identically.
  • a first external air valve 72 On the first side wall 68, a first external air valve 72 is arranged and on the second side wall 70, a second external air valve 74 is arranged.
  • the two external air valves 72, 74 are identical. They each have a movable valve body in the form of a valve plate 76, which is pressed by a helical closing spring 78 in the direction of a closed position in which it closes a foreign air opening 80 which is formed in the respective side wall 68 and 70, tightly. In the closed position of the valve disk 76, the closing spring is relaxed. The closing spring 78 is tensioned when the valve disk 76 transitions from its closed position into its open position. In its closed position, the valve disk 76 is held by an electromagnet 82.
  • the electromagnet 82 is subjected to a field current by a control device of the sweeping machine 10, which is known per se and therefore not shown in the drawing to achieve a better overview.
  • the valve disk 76 is automatically transferred into an open position due to the overpressure of the external air stored in the pressure vessel 66, in which it takes a distance from the external air opening 80, so that external air can flow out of the pressure vessel 66.
  • the closing spring 78 guides the valve disk 76 back into its closed position, in which it is held under the action of the electromagnet 82, which is again acted upon by exciting current.
  • the foreign air openings 80 of the two side walls 68, 70 are arranged in a vertically oriented plane 84. This is in FIG. 3 shown in dashed lines.
  • the external air opening 80 formed in the first side wall 68 of the pressure container 66 is in fluid communication with the first filter 42.
  • the external air opening 80 formed in the second side wall 70 of the pressure vessel 66 is connected via a second external air line in the form of a second hood 88 with the second filter 44 in fluid communication.
  • the two hoods 86 and 88 are identical. They each include a forced air inlet section 90, which adjoins the respective side wall 68 or 70 and which has an outer wall 92.
  • the forced air inlet section 90 merges via an inwardly directed step 94 into an arcuately curved hood section 96, which widens via a second step 98 and merges into a cross-sectionally rectangular external air outlet section 100.
  • the cross-sectional area of the Fremdluftauslassabitess 100 is equal to the cross-sectional area of the clean side 54 of the filter 42 and 44, which is covered by the Fremdluftauslassabêt 100 of the first hood 86 and the second hood 88.
  • the Fremdluftauslassabêt 100 carries on the outside a circumferential hood edge 102 which rests on the filter edge 46 of the first filter 42 and the second filter 44, provided that the cover member 60 assumes its closed position.
  • the first filter 42 is thus pressed by the first hood 86 against the opening edge 50 of the first suction opening 38, and the second filter 44 is pressed by the second hood 88 against the opening edge 50 of the second suction opening 40.
  • the cover part 60 is pivoted upwards about the pivot axis 62, so that it occupies a distance from the housing lower part 30, then the two hoods 86 and 88 release the filters 42 and 44, which are then removed by the user on the clean side from the suction openings 38, 40 can be, for example, to the filters 42, 44 exchange. New filters can then be inserted into the suction openings 38 and 40 on the clean side, and by closing the cover part 60, they are then pressed by the hoods 86 and 88 against the respective opening edge 50 of the suction opening 38 or 40.
  • the external air inlet portion 90 of the two hoods 86, 88 forms with its first stage 94 each have a support member on which a grid-shaped spring holder 104 is arranged, on which the closing spring 78 is supported, which is arranged between the spring holder 104 and the valve disc 76. Both the valve disk 76 and the closing spring 78 and the spring holder 104 are arranged in the forced air inlet section 90.
  • the flow cross-section of the hoods 86, 88 decreases over the first step 94 in order to occupy a region of least flow cross-section in the area of the curved hood section 96, which then expands again via the second step 98.
  • the smallest flow cross section, which has the curved hood portion 96, is at least 20%, preferably at least 50% of the flow cross section of the Fremd Kunststoffauslassabitess 100 and thus the surface of the clean side 54 of the filter 42 and 44th
  • the Fremd Kunststoffauslassabitese 100 each have on their the suction fan 18 side facing a hood opening 106. This is especially true FIG. 1 clear.
  • the hood openings 106 are connected via the passage 56 of the lower housing part 30 with the suction fan 18 in fluid communication. As a result, a flow connection can form when the lid part 60 is closed, with air laden with dust and dirt being sucked in by the suction fan 18 via the passage 56, the foreign air outlet sections 100 of the two hoods 86, 88, the filters 42 and 44 and the suction chute 32.
  • the course of the suction flow is in FIG. 1 illustrated by the arrows 108.
  • the Fremd Kunststoffauslassabitese 100 thus form a first portion of a suction line, which extends from the clean side 54 of the filter 42 and 44 to the suction fan 18.
  • a second portion of the suction line is formed by the passage 56 of the lower housing part 30.
  • the sweeping roller 22 is driven to rotate about the axis of rotation 20 and at the same time dusty air from the suction fan 18 via the suction duct 32, the filter 42, 44, the Fremd Kunststoffauslassabête 100 of the two hoods 86, 88 and the passage 56 of the housing bottom 30 sucked off.
  • Coarse debris is transferred from the sweeping roller 22 in the hopper 28, and the extracted air is released from the filters 42, 44 of dust. A large part of the dust settles on the dirty side 52 of the filters 42, 44. This increases the flow resistance the filter 42, 44 and the suction of the suction fan 18 within the suction chute 32 is progressively lower.
  • the filter 42, 44 At certain, preferably regular time intervals therefore takes place a cleaning of the filter 42, 44.
  • one of the filters 42, 44 is cleaned and at the same time is maintained via the other filter 42, 44 a suction operation.
  • the external air valve 72 or 74 assigned to the filter to be cleaned is briefly opened by interrupting the field current of the electromagnet 82. Excessive external air, which is stored in the pressure vessel 66, can thereby be supplied via the first hood 86 or the second hood 88 to the clean side 54 of the filter to be cleaned.
  • the foreign air flow forming during filter cleaning is in FIG. 2 illustrated schematically by the arrows 110 in the example of the cleaning of the first filter 42.
  • the hood portions 96 of the two hoods 86, 88 are each curved by 90 °. This allows a particularly compact design of the cover part 60 of the sweeper 10.
  • the pressure vessel 66 is disposed between the two external air valves 72, 74 and connected via identically designed hoods 86, 88 with the filters 42, 44.
  • the prevailing during sweeping overpressure within the pressure vessel 66 is less than 1 bar, in particular less than 0.5 bar.
  • the sweeper 10 is a compressor, not shown in the drawing, known per se include, which is connected via a known per se and therefore not shown in the drawing to provide a better overview in the drawing with the pressure vessel 66 in flow communication.
  • the compressor can be set in motion at intervals to provide an overpressure of, for example, 280 mbar to about 450 mbar, in particular an overpressure of 330 mbar, within the pressure vessel 66.
  • the compressed air tank can be connected via a compressed air connection to an external compressed air source to provide the desired pressure in the pressure vessel 66th
  • the cleaning of the filters 42, 44 is preferably carried out in succession, wherein a normal sweeping operation is produced between each two filter cleanings, in which the two external air valves 72, 74 are closed.
  • both filters 42, 44 are simultaneously cleaned at certain time intervals, in that both external air valves 72, 74 are simultaneously opened for a short time.
  • the external air valves 72, 74 not only have the function of briefly applying a pressure pulse to the respectively associated filters 42, 44 for cleaning, but they additionally serve as safety valves with which it is ensured that there is no unacceptably high overpressure within the pressure container 66 formed. If, for example, due to a malfunction of the above-explained compressor, the overpressure prevailing inside the pressure vessel 66 exceeds a predetermined maximum value, then the foreign air valves 72, 74 automatically move into their open position.
  • the force exerted by the solenoid 82 on the valve plate 76 magnetic holding force is set such that when a maximum allowable pressure in the pressure vessel exceeds the pressure acting on the valve plate 76 due to the prevailing overpressure pressure force exceeds the magnetic holding force.
  • the external air valves 72, 74 thus also assume the function of a safety valve for the pressure vessel 66, so that an additional safety valve can be omitted.
  • the sweeper 10 has a structurally simple and cost-mountable construction. Despite the provision of a relatively low overpressure of less than 500 mbar in the pressure vessel 66, effective filter cleaning is achieved. This allows the use of relatively small filters 42, 44 and a suction fan 18 with relatively low electrical power. Despite the use of the rather small filter 42, 44 is maintained by the suction fan 18, a permanent negative pressure in the region of the suction duct 32, so that the dust during operation of the sweeper remains low even if the filters 42, 44 are cleaned. It is ensured that with a cleaning of the filter 42, 44 no external air on the suction duct 32 and the sweeping roller 22 passes to the outside.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
  • Cleaning In General (AREA)

Claims (16)

  1. Balayeuse (10) comprenant une brosse de balayage (22) à entraînement rotatif, un contenant à déchets (28) et un ventilateur aspirant (18) destiné à aspirer l'air poussiéreux ainsi qu'au moins un filtre (42, 44) qui est agencé dans la voie d'écoulement entre la brosse de balayage (22) et le ventilateur aspirant (18) pour séparer les particules de poussière et les particules de saleté de l'air aspiré, le filtre (42, 44) étant en liaison fluidique avec le ventilateur aspirant (18) par l'intermédiaire d'une conduite d'aspiration et avec un contenant sous pression (66) par l'intermédiaire d'une conduite d'air extérieur et d'au moins une soupape d'air extérieur (72, 74), et, pour être nettoyé, pouvant être exposé à de l'air extérieur en surpression et stocké dans le contenant sous pression (66), caractérisée en ce que la conduite d'air extérieur comporte un capot (86, 88) qui recouvre un filtre (42, 44) du côté propre et qui constitue une première partie de la conduite d'aspiration, raccordée au côté propre (54).
  2. Balayeuse selon la revendication 1, caractérisée en ce que le ou les filtres sont réalisés sous la forme d'un filtre plissé plat (42, 44).
  3. Balayeuse selon la revendication 1 ou 2, caractérisée en ce que le capot (86, 88) comprend une entrée d'air extérieur, à laquelle est associée une soupape d'air extérieur (72, 74), et une sortie d'air extérieur, à laquelle est associé le filtre (42, 44), la section d'ouverture de la sortie d'air extérieur étant au moins deux fois plus petite que le côté propre (54) du filtre (42, 44).
  4. Balayeuse selon la revendication 3, caractérisée en ce que la sortie d'air extérieur s'applique contre un bord (46) côté propre du filtre (42, 44).
  5. Balayeuse selon l'une quelconque des revendications précédentes, caractérisée en ce que le capot (86, 88) présente entre une entrée d'air extérieur associée à la soupape d'air extérieur (72, 74) et une sortie d'air extérieur associée au filtre (42, 44) une partie de capot (96) courbée en forme d'arc.
  6. Balayeuse selon la revendication 5, caractérisée en ce que la partie de capot (96) courbée en forme d'arc est courbée de 90°.
  7. Balayeuse selon l'une quelconque des revendications précédentes, caractérisée en ce que le capot (86, 88) comprend une partie d'entrée d'air extérieur (90) dans laquelle une soupape d'air extérieur (72, 74) s'enfonce au moins en partie.
  8. Balayeuse selon la revendication 7, caractérisée en ce que la partie d'entrée d'air extérieur (90) loge un corps de soupape (76) mobile de la soupape d'air extérieur (72, 74).
  9. Balayeuse selon l'une quelconque des revendications précédentes, caractérisée en ce que le capot (86, 88) comprend une partie de sortie d'air extérieur (100) qui constitue la première partie de la conduite d'aspiration et qui est reliée au ventilateur aspirant par l'intermédiaire d'une deuxième partie (56) de la conduite d'aspiration.
  10. Balayeuse selon l'une quelconque des revendications précédentes, caractérisée en ce que le capot (86, 88) est réalisée en plusieurs parties.
  11. Balayeuse selon l'une quelconque des revendications précédentes, caractérisée en ce que la balayeuse (10) comprend plusieurs filtres (42, 44) qui sont en liaison fluidique avec le contenant sous pression (66) par l'intermédiaire d'une conduite d'air extérieur et qui sont recouverts du côté propre par un capot (86, 88) de la conduite d'air extérieur.
  12. Balayeuse selon la revendication 11, caractérisée en ce que le contenant sous pression (66) présente à chaque fois sur des parois latérales (68, 70) opposées l'une à l'autre une ouverture d'air extérieur (80), qui peut être fermée par une soupape d'air extérieur (72, 74), une conduite d'air extérieur comprenant un capot (86, 88), qui recouvre du côté propre un filtre (42, 44) associé à la soupape d'air extérieur (72, 74) concernée, se raccordant à chaque fois à la soupape d'air extérieur (72, 74).
  13. Balayeuse selon l'une quelconque des revendications précédentes, caractérisée en ce que la surpression dans le contenant sous pression (66) atteint au maximum 1 bar.
  14. Balayeuse selon l'une quelconque des revendications précédentes, caractérisée en ce que la ou les soupapes d'air extérieur (72, 74) sont une soupape de sécurité qui s'ouvre automatiquement lorsqu'une surpression maximale admissible dans le contenant sous pression (66) est dépassée.
  15. Balayeuse selon l'une quelconque des revendications précédentes, caractérisée en ce que le ou les filtres (42, 44) peuvent être remplacés du côté propre.
  16. Balayeuse selon l'une quelconque des revendications précédentes, caractérisée en ce que le contenant sous pression (66) et la ou les soupapes d'air extérieur (72, 74) sont agencés dans une partie couvercle (60) montée pivotante d'un corps (16) de la balayeuse (10).
EP11737933.9A 2011-07-22 2011-07-22 Balayeuse avec conteneur sous pression pour le nettoyage du filtre Not-in-force EP2734098B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2011/062620 WO2013013696A1 (fr) 2011-07-22 2011-07-22 Balayeuse avec conteneur sous pression pour le nettoyage du filtre

Publications (2)

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EP2734098A1 EP2734098A1 (fr) 2014-05-28
EP2734098B1 true EP2734098B1 (fr) 2016-09-07

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EP11737933.9A Not-in-force EP2734098B1 (fr) 2011-07-22 2011-07-22 Balayeuse avec conteneur sous pression pour le nettoyage du filtre

Country Status (5)

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US (1) US9220387B2 (fr)
EP (1) EP2734098B1 (fr)
JP (1) JP5810215B2 (fr)
CN (1) CN103687527B (fr)
WO (1) WO2013013696A1 (fr)

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CN108498014B (zh) * 2018-04-03 2021-11-19 南京瑞贻电子科技有限公司 一种扫地机器人
EP3852594B1 (fr) * 2018-09-21 2024-02-14 Martti Ollila Aspirateur
DE102019104497A1 (de) * 2019-02-21 2020-08-27 Hako Gmbh Tellerbesen, Kehrvorrichtung und Bodenreinigungsmaschine
DE102019132892A1 (de) * 2019-12-03 2021-06-10 Wirtgen Gmbh Bodenbearbeitungsmaschine mit gefilterter Staubabsaugung mit elastisch verformbarem Filtergehäuse
EP3888516A1 (fr) * 2020-04-01 2021-10-06 Hilti Aktiengesellschaft Nettoyage du filtre en fonction des besoins
CN112120608B (zh) * 2020-10-14 2021-08-27 邹家福 宽幅拖帕自动循环拖地机

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Also Published As

Publication number Publication date
US9220387B2 (en) 2015-12-29
CN103687527A (zh) 2014-03-26
WO2013013696A1 (fr) 2013-01-31
JP2014523328A (ja) 2014-09-11
US20140123433A1 (en) 2014-05-08
EP2734098A1 (fr) 2014-05-28
JP5810215B2 (ja) 2015-11-11
CN103687527B (zh) 2016-08-17

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