WO2014019620A1 - Machine de nettoyage des sols automotrice à module de système de filtre - Google Patents

Machine de nettoyage des sols automotrice à module de système de filtre Download PDF

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Publication number
WO2014019620A1
WO2014019620A1 PCT/EP2012/065059 EP2012065059W WO2014019620A1 WO 2014019620 A1 WO2014019620 A1 WO 2014019620A1 EP 2012065059 W EP2012065059 W EP 2012065059W WO 2014019620 A1 WO2014019620 A1 WO 2014019620A1
Authority
WO
WIPO (PCT)
Prior art keywords
filter
cleaning machine
floor cleaning
machine according
housing
Prior art date
Application number
PCT/EP2012/065059
Other languages
German (de)
English (en)
Inventor
Florian ABT
Bastian Du Maire
Andreas Kral
Original Assignee
Alfred Kärcher Gmbh & 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 Kärcher Gmbh & Co. Kg filed Critical Alfred Kärcher Gmbh & Co. Kg
Priority to CN201280075027.6A priority Critical patent/CN104508208B/zh
Priority to EP12741006.6A priority patent/EP2880221B9/fr
Priority to PCT/EP2012/065059 priority patent/WO2014019620A1/fr
Publication of WO2014019620A1 publication Critical patent/WO2014019620A1/fr

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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
    • 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
    • A47L11/29—Floor-scrubbing machines characterised by means for taking-up dirty liquid
    • A47L11/30—Floor-scrubbing machines characterised by means for taking-up dirty liquid by suction
    • 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
    • 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
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01H—STREET CLEANING; CLEANING OF PERMANENT WAYS; CLEANING BEACHES; DISPERSING OR PREVENTING FOG IN GENERAL CLEANING STREET OR RAILWAY FURNITURE OR TUNNEL WALLS
    • E01H1/00—Removing undesirable matter from roads or like surfaces, with or without moistening of the surface
    • E01H1/08—Pneumatically dislodging or taking-up undesirable matter or small objects; Drying by heat only or by streams of gas; Cleaning by projecting abrasive particles
    • E01H1/0827—Dislodging by suction; Mechanical dislodging-cleaning apparatus with independent or dependent exhaust, e.g. dislodging-sweeping machines with independent suction nozzles ; Mechanical loosening devices working under vacuum
    • E01H1/0836—Apparatus dislodging all of the dirt by suction ; Suction nozzles
    • E01H1/0845—Apparatus dislodging all of the dirt by suction ; Suction nozzles with mechanical loosening or feeding instruments for the dirt to be sucked- up, e.g. brushes, scrapers

Definitions

  • the invention relates to a self-propelled floor cleaning machine, in particular a sweeping machine, comprising a chassis, a suction fan device and a filter device, which is connected upstream in an air flow path of the suction fan device.
  • the invention further relates to a filter system module.
  • PCT / EP2011 / 051656 of February 4, 2011 the same applicant is a sweeper with a rotating driven sweeping brush and a sweeping container and with a suction fan, which is via a suction channel and a suction shaft with the sweeping brush in the flow direction for sucking dusty air, and with at least one filter for separating dust from the extracted air, wherein the at least one filter for cleansing on the clean side is acted upon by at least one external air valve with external air stored and pressurized in a pressure vessel.
  • the pressure vessel has a pressure vessel wall which lies opposite the clean side of the at least one filter and on which the at least one external air valve is arranged, wherein a section of the suction channel extends between the pressure vessel wall and the clean side of the at least one filter.
  • Sweepers as examples of self-propelled floor cleaning machines are known for example from DE 26 29 967 AI. With their help, a floor to be cleaned surface can be swept, with gross debris is transferred by means of 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 via a suction channel and a suction duct with the Sweeping brush is in flow communication. With the help of the suction fan dusty air can be sucked, so that the dust during the
  • Sweeping the dry soil surface is kept low.
  • the extracted air flows through a filter for separating dust on its way from the sweeping brush to the suction fan.
  • the filter builds up over time and therefore needs to be cleaned after some time.
  • the sweeper to a pressure vessel is stored in the pressurized air and from which the air via an external air valve of the clean side of the filter, so the side of the filter facing away from the hopper can be supplied.
  • the pressurized external air flows through the filter against the prevailing during normal sweeping flow direction of the intake air. This will clean the filter.
  • each eleven filter cartridges is associated with an air tube which extends above the filter cartridges and has openings or nozzles substantially in the axis of the filter cartridges, via which the filter cartridges can be acted upon with external air.
  • the external air is supplied to the air pipes from a pressure vessel in the form of an air distribution pipe via a solenoid valve.
  • the pressure in the air distribution pipe is more than 7 bar and each solenoid valve is opened for a period of 0.1 seconds.
  • the invention has for its object to provide a self-cleaning floor cleaning machine of the type mentioned, which is universally applicable.
  • This object is achieved in the aforementioned self-propelled floor cleaning machine according to the invention in that a receiving device for at least one filter system module is arranged on the chassis, wherein the at least one filter system module on the receiving device is fixed or fixable as a whole and that the at least one filter system module comprises at least one pressure vessel, a Filterabtherapies- device, at least one filter and one or more ports.
  • the filter system module is designed so that the modifications of the floor cleaning machine to provide them with the filter module system are minimal. Basically, only the receiving device must be provided as a mechanical fixing unit and it must be provided the appropriate connections for the suction and the Abcuris admire.
  • the filter system module Since the filter system module forms its own “closed” unit, it can be optimally positioned compared to other machine components, which in turn makes maintenance easy, and in particular allows easy access to the filter system module, for example to replace a filter.
  • the port or ports include one or more of the following port types: compressed air port, exhaust port, electrical power supply port, signal port.
  • the pressure vessel can be loaded with compressed air via a compressed air connection. This stored compressed air is then ready, in particular controlled and preferably automatically controls the at least one filter to apply compressed air pulses to clean this.
  • the filter system module can be fluidly connected to the suction fan device via a suction connection in order to permit normal suction operation (in particular sweeping / suction operation), in which dust-laden air is sucked in, through which at least one filter flows, thereby cleaning and substantially dust-free air is blown off.
  • a supply connection for electrical energy Via a supply connection for electrical energy, one or more components of the filter system module that require electrical energy, such as, in particular, an electromagnet of an external air valve, can be supplied accordingly.
  • a signal connection can be used to perform a controlled filter cleaning.
  • the supply connection for electrical energy also indirectly forms a signal connection, for example when a compressed air pulse is triggered by switching off an exciter current, then the filter cleaning is controlled via a controlled energy supply.
  • the at least one filter system module comprises a compressor device and / or a compressed air connection for establishing a fluid-effective connection with a compressor device.
  • Compressor device provides compressed air for loading the compressed air reservoir.
  • the compressor device can be arranged outside the filter system module. Accordingly, a fluid-effective connection must be provided via a connection (compressed air connection) to the filter system module.
  • a connection compressed air connection
  • the compressor device is arranged on the chassis and in particular is not part of the filter system module.
  • the receiving device comprises at least one receptacle into which the at least one filter system module is inserted and / or detachably insertable.
  • the receptacle is so formed, that also one or more cartridge filters are used alternatively.
  • the receiving device and / or the at least one filter system module above with respect to the direction of gravity, when the floor cleaning machine is placed on a horizontal support, and in particular directly above a hopper and / or a sweeping roller is arranged. Furthermore, the length of a flow path can be minimized.
  • the filter cleaning device is arranged in the pressure vessel. This results in a compact structure with an effective filter cleaning.
  • the filter cleaning device comprises at least one external air valve, by means of which the at least one filter can be acted upon purely on the clean side for cleaning with external air.
  • the at least one pressure vessel has a negative pressure region and an overpressure region, wherein the negative pressure region and the overpressure region are fluid-tightly separated from one another.
  • the over- Pressure range forms the actual pressure vessel.
  • the overpressure area can be stored compressed air, which is then ready to dissolve compressed air pulses for filter cleaning can.
  • the underpressure region is a transitional region through which a stream of air purified by the at least one filter flows through the dust.
  • the vacuum region is in fluid communication with the suction fan device. This allows a suction operation. It is favorable if at least one compressed-air connection is arranged at the overpressure region. As a result, the overpressure region can be loaded with pressure, in particular to enable a controlled filter cleaning.
  • the at least one pressure vessel to a pressure vessel wall as a partition wall between the negative pressure region and the overpressure region, wherein in particular the pressure vessel wall is opposite to a clean side of the at least one filter.
  • the corresponding filter system module thereby has at least two chambers.
  • a chamber allows normal suction operation. It includes the vacuum area. The other chamber allows a filter cleaning by compressed air.
  • At least one external air valve is arranged on the pressure vessel wall. This makes it easy to position the at least one external air valve.
  • the at least one pressure vessel has a housing and at least one lid, which closes the housing in a fluid-tight manner, wherein the at least one filter is arranged on the housing and in particular on the housing bottom and wherein in particular the housing is formed trough-shaped.
  • the lid which can be opened, it is possible to access the at least one filter in particular on the clean side. This makes it possible to easily filter replacement.
  • the arrangement of the filter on the housing bottom can be easily provide a multi-chamber filter system module. By a trough-shaped design of the housing can be achieved with respect to the housing in a simple manner, a fluid-tight closure of the lid.
  • the at least one cover is held on the housing via a hinge device and can be opened relative to the housing.
  • a hinge device it is possible in particular on the clean side to allow access to the at least one filter in order to be able to exchange it in a simple manner.
  • a compact construction results if at least one of the following elements is arranged on the at least one cover: An overpressure region of the at least one pressure vessel, a vessel wall as partition wall between an overpressure region and a negative pressure region of the at least one pressure vessel, a hold-down device for the at least a filter, the filter cleaning device, one or more ports.
  • the components essential for filter cleaning can be arranged on the lid.
  • a negative pressure region of the pressure vessel is arranged in the housing.
  • an adjusting device is provided for the at least one cover, by means of which an open folding position of the min. least one cover can be fixed relative to the housing.
  • a seal is provided, which is arranged on the at least one lid and / or in the housing and which ensures a seal between the at least one lid and the housing.
  • a fluid-tight seal can be achieved in a simple manner.
  • a negative pressure region (and an overpressure region) in the filter system module can be realized in a simple manner.
  • the housing has at least one recess on a housing bottom, on which the at least one filter can be inserted. This makes it possible, for example, to use the filter loosely on the housing bottom. In turn, maintenance is possible in a simple manner; a filter replacement can be performed with little effort and in particular tool-free.
  • a blocking surface for the filter is provided to provide a position assurance in at least one direction.
  • a seal is arranged between a boundary wall of the at least one recess in the housing bottom and the at least one filter, wherein in particular the seal bears against a lateral side of the at least one filter and the lateral side lies between a dirty side and a clean side.
  • This allows a certain clearance for the distance between the filter and the boundary wall.
  • This allows an effective seal between the boundary wall and the at least one filter and, on the other hand, a filter exchange can be realized in a simple manner.
  • the seal is, for example, molded or cast directly on filter lamellae and forms a frame.
  • a spring-loaded closure device which in particular comprises one or more screws, is provided for holding the at least one lid on the housing in a closed position.
  • the at least one cover can accordingly be pressed against the housing in order to achieve a fluid-tight closure.
  • a correspondingly necessary force can be exerted in order to axially fix the at least one filter in the housing via a hold-down device. It is favorable for an operator if one or more depressions, which are open towards the at least one recess, are arranged on the housing bottom. Through these troughs, an operator can contact the at least one filter, in particular directly on a holder, in order to allow easy removal of the filter.
  • the pressure vessel has a first pressure vessel wall as a partition wall between an overpressure region and a negative pressure region and has at least one second pressure vessel wall which closes the overpressure region in a fluid-tight manner, the filter purification device being fixed to the first pressure vessel wall and the second pressure vessel wall.
  • the at least one filter has at least approximately a rectangular cross section.
  • the receiving direction for the alternative recording is formed at least one cartridge filter and in particular flow connections for a suction flow of the at least one cartridge filter for the at least one filter module system can be used.
  • This allows the floor cleaning machine alternatively operate with the at least one cartridge filter or it can be provided with a Filterabtherapies Huawei a filter system module. It is particularly advantageous if the filter system module forms an independent and independent from the rest of the floor cleaning unit, which is mechanically connected to the chassis via the receiving device and functional over the one or more connections with respect to suction flow and compressed air flow and optionally electrical power supply and / or Signalbeetzschlagung the floor cleaning machine is connected.
  • the at least one filter on the at least one pressure vessel is replaceable on the cleanroom side. This results in a maintenance optimized for the operator.
  • a filter system module for a self-propelled floor cleaning machine which comprises at least one pressure vessel, a filter cleaning device, at least one filter and one or more ports, wherein the filter system module can be handled as a unit.
  • Figure 1 is a perspective view of an embodiment of a self-propelled floor cleaning machine according to the invention with a weggeklappten driver's seat area; the floor cleaning machine according to Figure 1 with an unfolded filter system module; a partial sectional view of the floor cleaning machine according to Figure i; a perspective view of an embodiment of a filter system module; a sectional view taken along line 5-5 of Figure 4; a sectional view taken along line 6-6 of Figure 4; the filter system module according to Figure 4 with the lid open and accessible filter; a sectional view of the filter system module according to Figure 7 along the line 8-8;
  • Figure 9 is a perspective view of another embodiment of a filter system module according to the invention.
  • FIG. 10 shows the filter system module according to FIG. 9 with the lid open.
  • An embodiment of a self-propelled floor cleaning machine according to the invention is a sweeper, which is shown in the figures 1 to 3 as a whole and designated there by 10.
  • This sweeper 10 has a chassis 12.
  • a rear wheel 14 and a front wheel 15 is arranged.
  • the front wheel device 15 comprises one or more front wheels.
  • the one or more front wheels are steerable via a steering device 16 with a steering wheel 18.
  • a cover 20 (housing cover) is arranged, which covers an engine compartment 22.
  • a driver's seat 24 is arranged on the lid 20, a driver's seat 24 is arranged.
  • the lid 20 is pivotally supported on the chassis 12.
  • a corresponding articulation device 26 is arranged in the region of the rear wheel device 14.
  • the cover 20 can be folded away in one direction 28 in order to allow access to the engine compartment 22. Further, by the folding away (opening) of the lid 20, as will be described in more detail below, allows access to a receiving device 30 for a filter system.
  • the direction 28 is opposite to a forward direction of travel of the sweeping machine 10.
  • the lid 20 In the unfolded position of the lid 20 ( Figures 1 and 2), in one embodiment, the lid 20 is pivoted on a back 32 of the sweeper 10 also. It is also possible in principle that the cover 20 is placed on and secured with a closure or is hinged for example at the front.
  • the driver's seat 24 is fixedly arranged on the cover 20, so that it is pivotable with the cover 20.
  • a motor 34 for driving the sweeper 10 is positioned.
  • the engine 34 is, for example, an internal combustion engine or an electric motor. About him in particular the rear wheel 14 is driven directly.
  • a suction fan device 36 which comprises a drive motor which drives a suction unit.
  • the drive motor may be an internal combustion engine or electric motor.
  • the suction unit can also be driven by the motor 34.
  • a hopper 38 is arranged on the chassis 12 of the sweeper 10. This hopper is in particular releasably held on an underside of the chassis 12. It is preferably positioned between the rear wheel 14 and the front wheel 15.
  • the sweeping container 38 is associated with a sweeping roller 40 ( Figure 3), which at the bottom of the
  • Chassis 12 is arranged.
  • the hopper 38 is used in particular for receiving coarse debris, which is received by means of the sweeping roller 40 from a floor surface to be cleaned.
  • the sweeping roller 40 is driven to rotate about a rotation axis.
  • the drive is via a corresponding engine such as an internal combustion engine or electric motor.
  • the drive can also be done via the motor 34.
  • the sweeping roller 40 is arranged in one embodiment between the front wheel 15 and the hopper 38 on the underside of the chassis 12. The axis of rotation is when the sweeper 10 is placed on a relative to the direction of gravity g horizontal pad, a horizontal axis of rotation.
  • the sweeper 10 comprises in addition to the sweeping roller 40 one or more disc brushes 42.
  • a disc brush 42 is arranged in particular in the region of the front wheel device 15 on the underside of the chassis 12.
  • a disc brush 42 is driven by a corresponding drive in a rotational movement.
  • a corresponding axis of rotation is based on the direction of gravity g at least approximately vertically, that is, when the sweeper 10 rests on a relative to the direction of gravity g horizontal pad, then the corresponding axis of rotation of a disc brush 42 is parallel to the direction of gravity or lies in a small acute angle (For example, less than 30 °) to the direction of gravity g.
  • a suction duct 44 is arranged ( Figure 3).
  • the suction chute 44 is positioned so that on the one hand coarse debris can be conveyed via the sweeping roller 40 directly into the hopper 38 and to other finer dirt or finer dirt on the substrate via the suction duct 44 is sucked.
  • suction (under) pressure is produced via the suction fan device 36, which is in fluid-effective connection with the suction duct 44.
  • the suction duct 44 is arranged in the embodiment shown with respect to the direction of gravity g below the receiving device 30 and in particular directly below. (If the sweeper 10 rests on a horizontal surface, then a vector parallel to the direction of gravity g, which passes through the receiving device 30, pierces the suction shaft 44 at least in a partial area.)
  • the sweepings container 38 is also located below the receiving device 30 with respect to the direction of gravity g and in particular directly below.
  • the receiving device 30 is, when the lid 20 is closed, below the driver's seat 24 (relative to the direction of gravity g) arranged. In particular, the receiving device 30 is arranged directly below the driver's seat 24.
  • the receiving device 30 has a "dirt port” 46, which is in direct fluid-effective contact with the suction chute 44. Furthermore, the receiving device 30 has a "clean port” 48 which is in direct fluid-effective contact with the suction blower 36 (this port is shown in FIGS 1 and 2 not shown). Between the clean connection 48 and the dirt connection 46, a filter device is arranged. The receiving device 30 is formed trough-shaped. She has one
  • Boundary wall 50 which defines an interior 52. In one embodiment, this interior 52 is at least approximately cuboid.
  • the boundary wall 50 comprises a boundary
  • the suction chute 44 is carried out through this delimiting floor 54, or it comprises (at least) an opening to which the suction chute 44 is connected.
  • the boundary floor 54 provides the dirt port 46.
  • a suction channel 56 is guided by the boundary wall 50.
  • This suction channel 56 has the clean connection 58 as the first orifice.
  • the clean connection 48 faces the engine compartment 22 with the suction blower device 36.
  • the suction channel 56 has a second mouth 58 (FIG. 3), which points into the interior 52 of the receiving device 30.
  • the receiving device 30 is basically designed so that a cartridge filter can be inserted into it.
  • a cartridge filter has in particular a ring-cylindrical shape; in cross section, it is annular.
  • a cylindrical outer side of the cartridge filter represents a dirty side of the cartridge filter.
  • a cylindrical inner side represents a clean side of the cartridge filter.
  • Filter material lies between the outer side and the inner side and is configured, for example, in the form of a flat pleated filter. Dust-laden air flowing from the outside to the inside is cleaned by the cartridge filter.
  • the inside of the cartridge filter with the clean side is provided for connection to the second orifice 58 on the receiving device 30.
  • the outside when the cartridge filter is mounted on the receiver 30, covers the dirty port 46 so that dust-laden air drawn in via the suction duct 44 must pass completely through an area on the outside of the cartridge filter and be filtered accordingly.
  • the receiving device 30 is designed to receive a filter system module 60.
  • This filter system module 60 is designed so that it as Independent module to the receiving device 30 both mechanically and with respect to further functional connections (in particular flow guidance) can be connected. This results in the fundamental possibility of operating the sweeper 10 alternatively with a cartridge filter or a filter system module 60.
  • the filter system module 60 (FIGS. 4 to 8) is designed as a pressure vessel 62. It comprises a housing 64, on which a cover 66 is seated. A housing interior 68 (FIGS. 5 to 8) is defined by the housing 64, wherein this housing interior 68 can be closed in a fluid-tight manner via the cover 66.
  • the housing 64 comprises a boundary wall 70, with boundary walls which protrude transversely and in particular perpendicularly on a housing bottom 72.
  • the boundary walls of the boundary wall 70 are integrally connected to the housing bottom 72.
  • a flange 74 is arranged at the boundary wall 70 is spaced from the housing bottom 72. This flange 74 is in particular circumferential.
  • the flange 74 defines a wall, which is transverse and in particular perpendicular to the boundary wall 70 and thereby oriented at least approximately parallel to the housing bottom 72.
  • the housing 64 has a trough-shaped form.
  • a recess 76 is arranged in the housing bottom 72 (at least) .
  • a filter 78 can be positioned in the housing bottom 72 (at least) in the housing bottom 72 .
  • the filter 78 in particular has a rectangular cross-section and is designed, for example, as a flat-fold filter.
  • the filter 78 has a dirty side 80 and a clean side 82.
  • the clean side 82 is the housing interior 68 facing.
  • the dirty side 80 faces away from the housing interior 68 and protrudes into the suction duct 44 or is connected to it directly in a fluid-effective manner.
  • the filter 78 has a holder 84 on which the filter material sits. This holder 84 is formed for example as a frame. About the holder 84, the filter 78 is inserted into the recess 76 of the housing bottom 72.
  • a boundary wall 86 of the recess 76 is stepped on the housing bottom 72; the boundary wall 86 provides a support surface 88 for the holder 84 of the filter 78 at the recess 76.
  • This support surface 88 is oriented at least approximately parallel to a housing bottom inner surface 90, which delimits the housing interior 68 on the housing bottom 72.
  • the boundary wall 86 further has transverse to this support surface 88 and spaced transverse surfaces 92a, 92b.
  • the filter 78 can be immersed through the recess 76 from above, that is to say from the housing interior 68.
  • the holder 84 can be placed on the support surface 88.
  • a seal 94 is arranged between the boundary wall 86 and the filter 78.
  • the seal is arranged in particular on the transverse surface 92a and / or the transverse surface 92b or contacts the transverse surface 92a or 92b.
  • the seal 94 may be disposed on the filter 78 and / or the housing bottom 72.
  • depressions (depressions) 98 are open laterally to the recess 76.
  • Such a depression 98 over which the filter 78 protrudes in particular with the holder 94, facilitates the removal of a filter 78 or the insertion into the recess 76.
  • the seal 94 is arranged to extend beneath the troughs 98 so that the sealing path through the troughs 98 is not interrupted.
  • the cover 66 is held by a hinge device 100 on the housing 64 and in particular a region of the flange 74.
  • This region of the flange 74 is in particular the region of a head side of the housing 64; in a rectangular cross-section of the housing 64 has this two parallel longitudinal sides and transversely and in particular perpendicular thereto spaced parallel short sides.
  • the lid 66 is pivotally supported on the housing 64.
  • a pivot axis 102 is oriented at least approximately parallel to the housing bottom 72.
  • the positioning device comprises, for example, a rod 106 which is pivotally mounted on the housing 64 and in particular a region of the flange 74.
  • the rod 106 is formed as an angle element.
  • the region of the flange 74, on which the rod 106 is pivotally mounted, is located on a short side and the region, on which the hinge device 100 is arranged.
  • the cover 66 has a recess 108 into which the rod can be inserted.
  • a receptacle 110 is provided for the rod 106 at this flange portion, wherein this receptacle 110, for example, has one or more holders for the rod 106 and / or comprises a recess into which the rod 106 can be inserted.
  • the cover 66 has a peripheral region 112, which is adapted to the flange 74 and over which the cover 66 can be supported on the flange 74. This area 112 is associated with a seal 114.
  • the seal 114 is disposed on the region 112. It is also possible that this is alternatively or additionally arranged on the flange 74. By means of the seal 114, the housing interior 68 can be closed in a fluid-tight manner via the cover 66.
  • a closure device 116 is provided.
  • This closure device 116 comprises in particular spring-loaded screws 118a, 118b.
  • a spring-loaded screw 118a or 118b is arranged in particular on a head side of the lid 66.
  • About the closure device 116 can be a positive connection in the housing 64 determine.
  • screws of the closure device 116 engage the flange 74.
  • the cover 66 can be pressed with its portion 112 against the flange 74 with intermediate seal 114 and secure the fluid-tight closed position.
  • the filter system module 60 has a vacuum region 120 and an overpressure region 122 (see, for example, FIG.
  • the negative pressure region is formed over the housing interior 68. It is fluid-tightly separated from the overpressure region 122.
  • the overpressure area 122 is formed in the lid 66. The cover 66 thereby forms the actual pressure vessel of the pressure vessel 62.
  • a port 124 is arranged ( Figure 7), which is in direct fluid-effective connection with the Sauggebläse worn 36 when the filter system module 60 is mounted on the sweeper 10.
  • the connection 124 can be connected to the second opening 58 of the suction channel 56 on the receiving device 30.
  • the connection 124 leads into the housing interior 68.
  • the overpressure region 122 is closed by a (first) container wall 126 and by a second container wall 128. Between the first container wall 126 and the second container wall 128 a pressurizable space is formed.
  • a connection 130 is arranged for compressed air.
  • Compressed air for pressure loading of the overpressure region 122 is provided by a compressor device 132 (shown in FIG. 1 without compressed air line).
  • the compressor device 132 may be arranged in the engine compartment 22. But it can also be connected directly to the filter system module 60.
  • connection 134 has, for example, a cable gland.
  • An electrical power supply can be coupled via a connection 134 and / or control signals can be coupled in.
  • the second container wall 128 is an "outer" wall of the lid 66.
  • the second container wall 128 is configured to include a recessed central region 136.
  • the distance to the first container wall 126 is smaller than outside this middle region 136.
  • the first container wall 126 forms a partition wall to the vacuum region 120.
  • the first container wall 126 and the second container wall 128 are fixedly connected to each other.
  • a seal 140 is arranged at a junction 138 of first container wall 126 with the second container wall 128, arranged.
  • the overpressure region 122 can be pressurized.
  • a typical volume of the overpressure region 122 is about 7.5 I.
  • a typical pressure loadability is 300 mbar.
  • the region 112 is seated in particular on the second container wall 128.
  • the first container wall 126 points toward the housing bottom 72 and the clean side 82 of the filter 78.
  • a hold-down device 142 is arranged on the cover 66. This sits in particular on the first container wall 126 and protrudes beyond this in the direction of the filter 78th
  • the hold-down device 142 When the lid 66 is closed, the hold-down device 142 seats on the filter 78 and in particular on the holder 84 of the filter 78.
  • the hold-down device 142 is dimensioned in relation to the lid 66 so that when the lid 66 is closed, it presses the filter 78 against the support surface 88. By the hold-down device 142 is thereby provided for an axial fixation of the filter 78.
  • the filter 78 can be inserted loosely. By the support surface 88 to one side and by the hold-down device 142 to the other direction, the filter 78 is then secured in the closed filter system module 60.
  • the hold-down device 142 has for this purpose a support element 144, which is positioned at a distance from the first container wall 126 via a corresponding holder 146.
  • the support member 144 is provided with through recesses to allow a flow passage.
  • the filter 78 defines on the clean side 82 a filter plane.
  • the hold-down device 142 presses with the support element 144 on this filter level.
  • the filter system module 60 has a filter cleaning device 148.
  • This filter cleaning device 148 is arranged on the cover 66.
  • the filter cleaning device 148 comprises (at least) an external air valve 150.
  • the filter 78 can be pressurized with compressed air, which is stored in the overpressure region 122, from the clean side 82 by means of an external air valve in order to dissolve dust adhering to it.
  • pressure pulses for cleaning the filter 78 can be provided via the external air valve 150.
  • the pressurization of the filter 78 for cleaning can be done in particular controlled. For example, a timing (compressed air pulses at certain intervals) and / or a sensory
  • a filter passage is determined directly or indirectly, and if necessary (if, for example, the filter passage moves below a threshold) an automatic cleaning is carried out. It is also possible for a cleaning process to be initiated manually by a user of the sweeping machine 10.
  • the external air valve 150 is fixed to the first container wall 126. It may be provided that the external air valve 150 is also fixed to the second container wall 128.
  • the external air valve 150 has a valve disk 152. This valve disk is pressed by a closing spring 154 in the direction of a closed position, wherein in the closed position, an external air opening 156 in the first
  • Container wall 126 is closed fluid-tight. In this closed position, the overpressure region 122 can be charged via the compressor device 132 with compressed air.
  • the closing spring 154 which is for example helical, is supported on an inner side of the support element 144. In one embodiment, the closing spring 154 is relaxed in the closed position of the valve disk 152. The closing spring 154 is tensioned when the valve disk 152 transitions from its closed position into its open position. In its closed position, the valve disk 152 is held by an electromagnet 158. For this purpose, the electromagnet 158 is acted on by a control unit of the sweeping machine 10 with an exciter current. When the excitation current is interrupted, the valve disk 152 is automatically transferred to its open position due to the overpressure acting on it in the overpressure region 122, in which it is at a distance from the external air opening 156. The interruption of the exciter current can be controlled accordingly.
  • valve disk 152 In the open position of the valve disk 152, external air (compressed air) can flow out of the overpressure region 122.
  • the closing spring 154 then then returns the valve disk 152 back to its closed position, in which it is then held under the action of the electromagnet 158, which is again charged with exciting current.
  • the filter 78 is mechanically shaken by the one or more pressure pulses and thereby cleaned. At the same time, part of the outside air flows through the filter 78 against the direction of flow prevailing during normal suction operation (at the dirty side 80 to the clean side 82). This enhances filter cleaning.
  • a baffle wall is arranged in the extraction duct 44. This is positioned so that a pressure pulse hits it and is reflected back to the filter 78.
  • the filter system module 60 is adapted in its external dimensions so that it is mechanically fixable to the receiving device 30.
  • the receiving devices 30 and the filter system module 60 are adapted to each other so that it is held in a form-fitting manner in the receiving device 30.
  • the filter system module has the connection 124 as a suction connection. This is fluidly connected to the suction fan 36.
  • the dirty side 80 of the filter 78 forms a "dirty suction port" of the filter system module 60.
  • the dirty side 80 of the filter 78 when the filter system module 60 is disposed in the receiver 30, is directly fluidly connected to the suction chute 44.
  • the compressed air supply port 130 can be used The compressed air pressure is applied to the filter 78, or the electromagnet 158 is supplied with electrical energy via the ports 134.
  • the filter system module 60 forms a unit that can be handled as a whole, which can be used on the receiving device 30, in particular as an alternative to a cartridge filter.
  • the filter system module 60 has the necessary connections (in particular suction connection 124 and connection 130 for compressed air) in order, on the one hand, to permit suction operation of the sweeper 10 and, on the other hand, to carry out a particularly controlled filter cleaning. Furthermore, it has the connection (s) 134 in order to actuate the filter cleaning device 148 and in particular to be able to actuate it in a controlled manner.
  • the filter system module 60 is in particular independent of the sweeper 10 in the sense that it is a unit that can be handled independently as a whole.
  • the filter cleaning device 148 is fixed to the cover 66 and fixed in particular to the first container wall 126 and the second container wall 128. As a result, for example, strong compressed air pulses can be generated, so as to enable effective filter cleaning.
  • the sweeper 10 works as follows:
  • the engine compartment 22 is closed via the cover 20.
  • the sweeping roller 40 returns coarse dirt into the hopper 38. Dust-laden air is sucked in via the suction fan 36 and fed to a filter device.
  • the filter system module 60 When the filter system module 60 is inserted in the receiver 30, the dirty side 80 of the filter 78 is exposed to this dusty air. This is cleaned by the filter 78.
  • the dust content of the sucked air On the clean side 82, the dust content of the sucked air is considerably reduced compared to the dust content on the dirty side 80.
  • the filter 78 can be free of dust; Dust, which has settled in particular to a large extent on the dirty side 80 of the filter 78 is removed via appropriate compressed air pulses. This in turn increases the suction power.
  • the lid 66 of the filter system module 60 can be opened and a corresponding folding position can be secured via the positioning device 104 (see FIG. In particular, this open position of the cover 66 can also be achieved and secured when the filter system module 60 is fixed in the receiving device 30.
  • the filter 78 can then be accessed on the filter 78 and this can be easily replaced. In particular, this can be tool-free can be taken out and a new filter can be used. Subsequently, the lid 66 is closed again and it is achieved by the hold-down device 142 at the same time an axial fixation of the filter 78.
  • connections 130, 134 are arranged on a region of the cover 66 which is arranged on or in the vicinity of the hinge device 100.
  • a cartridge filter can be inserted into the receiving device 30.
  • a filter system module 160 includes a plurality of filters 162a, 162b.
  • the filters 162a, 162b are arranged on the housing bottom 72 as described above in connection with the filter system module 60.
  • each filter 162a, 162b is associated with its own external air valve 166a, 166b in order to perform an effective cleaning of the corresponding filter 162a, 162b.
  • the filter system module 160 is constructed in the same way as the filter system module 60.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)

Abstract

L'invention concerne une machine de nettoyage des sols automotrice (10), laquelle comprend un châssis (12), un ventilateur extracteur (36) et un système de filtre, lequel est monté en amont du ventilateur extracteur (36) dans un trajet de courant d'air. Un dispositif de réception (30) pour au moins un module de système de filtre (60/160) est agencé sur le châssis (12). Le ou les modules de système de filtre (60/160) sont ou peuvent être fixés dans leur intégralité sur le dispositif de réception (30). Le ou les modules de système de filtre (60/160) comprennent au moins un récipient sous pression (62), un dispositif de nettoyage de filtre (148), au moins un filtre (78/162a; 162b) et un ou plusieurs raccords (124, 130, 134).
PCT/EP2012/065059 2012-08-01 2012-08-01 Machine de nettoyage des sols automotrice à module de système de filtre WO2014019620A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN201280075027.6A CN104508208B (zh) 2012-08-01 2012-08-01 自行的地面清洁机和过滤器系统模块
EP12741006.6A EP2880221B9 (fr) 2012-08-01 2012-08-01 Auto-laveuse des sols automotrice avec module de filtre
PCT/EP2012/065059 WO2014019620A1 (fr) 2012-08-01 2012-08-01 Machine de nettoyage des sols automotrice à module de système de filtre

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2012/065059 WO2014019620A1 (fr) 2012-08-01 2012-08-01 Machine de nettoyage des sols automotrice à module de système de filtre

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WO2014019620A1 true WO2014019620A1 (fr) 2014-02-06

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CN (1) CN104508208B (fr)
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Cited By (3)

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WO2019001694A1 (fr) * 2017-06-28 2019-01-03 Alfred Kärcher SE & Co. KG Machine de nettoyage des sols comprenant un dispositif filtrant amovible
US10219670B2 (en) 2014-09-05 2019-03-05 Tennant Company Systems and methods for supplying treatment liquids having nanobubbles
US10729299B2 (en) 2016-01-19 2020-08-04 Festool Gmbh Suction device

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CH715503B1 (de) * 2019-05-13 2020-05-15 Bucher Municipal Ag Selbstfahrende Kehrmaschine.
CN110432836A (zh) * 2019-07-28 2019-11-12 山东理工大学 一种智能化气力吸送式剩（残）料回收设备
CN115336941A (zh) * 2022-08-22 2022-11-15 广东美房智高机器人有限公司 一种吸污装置及清洁设备

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EP1922970A2 (fr) * 2006-11-20 2008-05-21 BLACK & DECKER INC. Aspirateur avec filtre de panneau
DE102010001678A1 (de) * 2010-02-08 2011-08-11 Alfred Kärcher GmbH & Co. KG, 71364 Kehrmaschine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10219670B2 (en) 2014-09-05 2019-03-05 Tennant Company Systems and methods for supplying treatment liquids having nanobubbles
US10729299B2 (en) 2016-01-19 2020-08-04 Festool Gmbh Suction device
WO2019001694A1 (fr) * 2017-06-28 2019-01-03 Alfred Kärcher SE & Co. KG Machine de nettoyage des sols comprenant un dispositif filtrant amovible

Also Published As

Publication number Publication date
CN104508208B (zh) 2016-11-16
EP2880221B1 (fr) 2017-01-18
EP2880221A1 (fr) 2015-06-10
EP2880221B9 (fr) 2017-05-31
CN104508208A (zh) 2015-04-08

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