EP4295739A1 - Procédé de fonctionnement d'une machine de nettoyage de sol - Google Patents

Procédé de fonctionnement d'une machine de nettoyage de sol Download PDF

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Publication number
EP4295739A1
EP4295739A1 EP23172046.7A EP23172046A EP4295739A1 EP 4295739 A1 EP4295739 A1 EP 4295739A1 EP 23172046 A EP23172046 A EP 23172046A EP 4295739 A1 EP4295739 A1 EP 4295739A1
Authority
EP
European Patent Office
Prior art keywords
cleaning
liquid
dirty liquid
time interval
floor
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.)
Pending
Application number
EP23172046.7A
Other languages
German (de)
English (en)
Inventor
Jens Niemke
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.)
Hako GmbH
Original Assignee
Hako GmbH
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 Hako GmbH filed Critical Hako GmbH
Publication of EP4295739A1 publication Critical patent/EP4295739A1/fr
Pending legal-status Critical Current

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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
    • A47L11/29—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
    • A47L11/302—Floor-scrubbing machines characterised by means for taking-up dirty liquid by suction having rotary tools
    • A47L11/305—Floor-scrubbing machines characterised by means for taking-up dirty liquid by suction having rotary tools the tools being disc brushes
    • 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
    • A47L11/4013—Contaminants collecting devices, i.e. hoppers, tanks or the like
    • A47L11/4016—Contaminants collecting devices, i.e. hoppers, tanks or the like specially adapted for collecting fluids
    • 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
    • A47L11/408—Means for supplying cleaning or surface treating agents
    • A47L11/4083—Liquid supply reservoirs; Preparation of the agents, e.g. mixing devices
    • 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
    • A47L11/28—Floor-scrubbing machines, motor-driven
    • A47L11/282—Floor-scrubbing machines, motor-driven having rotary tools
    • A47L11/283—Floor-scrubbing machines, motor-driven having rotary tools the tools being disc brushes
    • 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
    • A47L11/292—Floor-scrubbing machines characterised by means for taking-up dirty liquid having rotary tools
    • A47L11/293—Floor-scrubbing machines characterised by means for taking-up dirty liquid having rotary tools the tools being disc brushes
    • 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
    • A47L11/4011—Regulation of the cleaning machine by electric means; Control systems and remote control systems therefor
    • 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
    • A47L11/4013—Contaminants collecting devices, i.e. hoppers, tanks or the like
    • A47L11/4016—Contaminants collecting devices, i.e. hoppers, tanks or the like specially adapted for collecting fluids
    • A47L11/4019—Fill level sensors; Security means to prevent overflow, e.g. float valves
    • 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
    • A47L11/4063—Driving means; Transmission means therefor
    • A47L11/4069—Driving or transmission means for the cleaning tools
    • 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
    • A47L11/408—Means for supplying cleaning or surface treating agents
    • A47L11/4088—Supply pumps; Spraying devices; Supply conduits
    • 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
    • A47L2201/00—Robotic cleaning machines, i.e. with automatic control of the travelling movement or the cleaning operation
    • 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
    • A47L2201/00—Robotic cleaning machines, i.e. with automatic control of the travelling movement or the cleaning operation
    • A47L2201/06—Control of the cleaning action for autonomous devices; Automatic detection of the surface condition before, during or after cleaning

Definitions

  • the present invention relates to a method for operating a floor cleaning machine, wherein the floor cleaning machine has a cleaning liquid container, a dirty liquid container and a chassis for moving the floor cleaning machine over a floor surface to be cleaned.
  • the floor cleaning machine has a cleaning device with cleaning elements which are designed to engage with the floor surface to be cleaned, as well as a dirty liquid receiving device which is connected and designed to remove dirty liquid from the dirty liquid receiving device to the dirty liquid container and dirty liquid from the floor surface to be cleaned to record.
  • the present invention also relates to a floor cleaning machine that is designed to carry out such a method.
  • Such floor cleaning machines are known from the prior art.
  • cleaning liquid such as fresh water from the cleaning liquid container is applied to the floor surface to be cleaned by means of the cleaning device, the cleaning elements engaging with the floor surface in order to remove dirt from it in cooperation with the cleaning liquid.
  • the dirty liquid receiving device which can be designed, for example, as a suction cup, the previously applied cleaning liquid, which is contaminated with dirt after the cleaning elements engage with the floor surface, so that it is dirty liquid, is picked up again and placed in the dirty liquid container.
  • Such so-called scrubber dryers can be designed as hand-held or ride-on machines. It is also possible for such machines to be designed as autonomously driving so-called cleaning robots, so that no operator directly monitors the operation.
  • cleaning liquid is applied to the floor surface to be cleaned, but the dirty liquid receiving device does not work reliably, cleaning liquid laden with dirt, i.e. dirty liquid, remains on the floor surface to be cleaned. On the one hand, this represents a safety risk, as there is then a fire on the floor there is an increased risk of slipping. On the other hand, the desired cleaning result is not achieved.
  • such floor cleaning machines often have a suction device such as a suction turbine that is driven by an electric motor.
  • a suction device such as a suction turbine that is driven by an electric motor.
  • the motor current of the electric motor drops while the voltage remains the same, this can usually have two causes.
  • the connection between the dirty liquid receiving device and the dirty liquid container is blocked, so that there is no longer any air flow from the dirty liquid receiving device into the dirty liquid container, which means that the suction device has to pump less air, so that the motor current is reduced. So there is an error.
  • the present invention is therefore based on the object of providing a method for operating a floor cleaning machine and such a machine with which errors can be reliably detected during operation.
  • the method according to the invention during operation, i.e. while the machine is moving over a floor surface to be cleaned, it is recorded, on the one hand, whether cleaning liquid is applied to the floor surface to be cleaned using the cleaning device.
  • This is done in such a way that, with the help of a suitably designed device, the amount of cleaning liquid applied is recorded in a first time interval and compared with a threshold value.
  • the threshold value can be chosen to be very low or equal to zero. However, the comparison with a threshold value other than zero ensures that low measured values of the device do not automatically lead to the result that cleaning fluid is actually applied to the floor surface via the cleaning device.
  • the amount of dirty liquid that is removed from the dirty liquid receiving device during a second time interval and placed into the dirty liquid container is recorded using a further device.
  • the first and second time intervals can be congruent, i.e. the detection can take place at the same time, or the second time interval can be later than the first time interval in order to take into account that cleaning liquid that is applied to the floor surface to be cleaned only comes from the dirty liquid receiving device at a different time can be resumed.
  • the recorded amount of dirty liquid absorbed is compared with a second threshold value, which can also be chosen to be very low or equal to zero. But here too, the threshold comparison ensures that the artifacts already described do not occur.
  • an error signal is output if, on the one hand, the amount of cleaning liquid dispensed recorded during the first time interval is above the threshold value and the amount of dirty liquid discharged recorded during the second time interval is below the threshold value. It is thus detected that the dirty liquid receiving device is not working reliably.
  • This is either displayed to a user based on the error signal, or the error signal is used to switch off a possibly existing drive of the floor cleaning machine, via which the chassis is driven and moved over the floor surface to be cleaned.
  • the method according to the invention is particularly advantageous when used together with an autonomously driving floor cleaning machine, since a user cannot immediately detect that dirty liquid remains on the floor surface to be cleaned, and the user can then actively stop the cleaning journey. In contrast to the prior art, a malfunction of the dirty liquid receiving device is reliably detected during operation.
  • the floor cleaning machine has a suction device which applies negative pressure to the dirty liquid tank and which has an electric drive motor which is supplied with a voltage of a predetermined strength during operation, so that a supply current flows through the drive motor, whereby the strength of the supply current is detected in a third time interval, wherein the detected strength of the supply current is compared with a third threshold, the detected amount of dirty liquid is compared with a fourth threshold, and a second error signal is output when the detected strength of the supply current is smaller than the third threshold value and the detected amount of dirty liquid is smaller than the fourth threshold value.
  • the floor cleaning machine can have a device that is designed to detect the amount of cleaning liquid that is supplied to the cleaning device from the cleaning liquid tank within a first time interval, as well as a device that is designed to detect the amount of dirty liquid that is within a second time interval from the dirty liquid receiving device is drained from the dirty liquid tank.
  • a device can preferably also be provided which is designed to detect the strength of the supply current in a third time interval.
  • the cleaning liquid container and the cleaning device are connected by a cleaning liquid line for supplying cleaning liquid, a flow sensor being provided in the cleaning liquid line as a device for detecting the amount of cleaning liquid that is supplied in the first time interval.
  • a flow sensor being provided in the cleaning liquid line as a device for detecting the amount of cleaning liquid that is supplied in the first time interval.
  • a cleaning liquid pump is provided in the cleaning liquid line, which is designed to detect the amount of cleaning liquid in the first time interval that is supplied to the cleaning device, so that the pump acts as a device for detecting the Amount of cleaning liquid acts, which is supplied to the cleaning device from the cleaning liquid tank within a first time interval.
  • the pump acts as a device for detecting the Amount of cleaning liquid acts, which is supplied to the cleaning device from the cleaning liquid tank within a first time interval.
  • a first device for detecting the level in the cleaning liquid container wherein by detecting a change in the level in the cleaning liquid container in the first time interval by the first device, the amount of cleaning liquid that is supplied in the first time interval is detected.
  • the amount of cleaning liquid supplied to the cleaning device is determined by a change in the level in the cleaning liquid container.
  • a second device for detecting the level in the dirty liquid container is provided, by detecting a change in the level in the dirty liquid container in the second time interval the amount of cleaning liquid that is supplied in the first time interval is recorded by the second device.
  • the amount of dirty liquid discharged into the dirty liquid container is also determined from a change in the level therein.
  • the second device for detecting the level in the dirty liquid container is designed as a pressure sensor.
  • Figure 1 shows an exemplary embodiment of a floor cleaning machine 1 according to the invention, which is designed to carry out an embodiment of a method according to the invention for operating such a machine.
  • the floor cleaning machine 1 has a chassis 5 comprising several wheels 3, with which the floor cleaning machine 1 can be moved over a floor surface 7 to be cleaned.
  • the floor cleaning machine 1 has a drive 8, not shown, with which the rear wheels 3 of the chassis 5 are driven, so that the floor cleaning machine 1 can move automatically over the floor surface 7 to be cleaned.
  • the floor cleaning machine 1 shown here is designed as a so-called robot, ie it can move autonomously over the floor surface 7 to be cleaned without being guided by a user and automatically detects obstacles and determines its course based on this.
  • the present invention is not limited to such robots, but can be used in any type of floor cleaning machine 1, ie also in so-called ride-on machines or machines in which the user walks behind the machine.
  • the floor cleaning machine 1 has a cleaning device 9, which comprises a cleaning element 11, designed here as a rotating brush, which engages with the floor surface 7 to be cleaned during operation.
  • the cleaning device 9 is also designed in such a way that the cleaning element 11 can be raised relative to the floor surface 7 to be cleaned, so that the cleaning element 11 then does not engage with the floor surface 7 to be cleaned.
  • the cleaning device 9 has an outlet 13, which is connected via a cleaning liquid line 15 to a cleaning liquid container 17, which is accommodated in a housing 19 of the floor cleaning machine 1.
  • a flow sensor 21 is provided in the cleaning liquid line 15, which forms a device with which the amount of cleaning liquid flowing through the cleaning liquid line 15 in a time interval and which is supplied to the cleaning device 9 can be detected.
  • a pump 23 is provided in the cleaning liquid line, which is designed to convey cleaning liquid from the cleaning liquid container 17 to the outlet 13 and thus to the cleaning device 9.
  • the pump 23 can preferably be designed in such a way that it also records the amount of cleaning liquid conveyed from the cleaning liquid container 17 to the outlet 13 in a time interval. This can be the case in addition to flow sensor 21 or as an alternative thereto. If both the pump 23 and the flow sensor 21 can record the quantity delivered per time interval, a redundant system is achieved.
  • a first device can be provided in the liquid container 17, which is designed to detect the height of the level 25 of the cleaning liquid in the cleaning liquid container 17.
  • This device has a guide element 27 which extends essentially in the vertical direction in the cleaning liquid container 17 when the floor cleaning machine 1 is arranged on a horizontally extending floor surface 7 to be cleaned.
  • a float 29 is guided on the guide element 27 and its position can be detected. Based on the change in the position of the float 29 of this float device 27, 29 within a time interval, the amount of cleaning liquid that has been supplied to the cleaning device 9 during this time interval can then also be determined.
  • a first pressure sensor 31 can be provided in the bottom area of the cleaning liquid tank 17, the signal of which is a measure of the gravity pressure of the cleaning liquid in the cleaning liquid container 17. It is then also possible to use this first pressure sensor 31 to determine or detect the cleaning liquid supplied to the cleaning device 9 in a time interval.
  • the floor cleaning machine 1 in the housing 19 also has a dirty liquid container 33, the upper region of which is connected to the inlet of a suction device 35, which is driven by an electric motor 37, which in a preferred embodiment is a so-called suction turbine in which the electric motor 37 rotates a fan wheel.
  • the suction device is designed to apply a negative pressure to the dirty liquid container 33 relative to the environment of the floor cleaning machine 1.
  • the electric motor 37 is designed or provided with a corresponding device so that a signal can be generated which is a measure of the current drawn by the electric motor 37. A signal can therefore be generated that reflects the amount of motor current that the electric motor 37 absorbs in a time interval.
  • a second and a third pressure sensor 39, 41 are provided in the dirty liquid container 33.
  • the second pressure sensor 39 is designed to detect the gravity pressure of the dirty liquid in the bottom area of the dirty liquid container 33 and to generate a corresponding signal.
  • the third pressure sensor detects the pressure above the level 43 of the dirty liquid in the dirty liquid container 33, since this pressure is reduced compared to the ambient pressure due to the suction device 35.
  • the level 43 in the dirty liquid container 33 can then be determined in a manner known per se from the signals from the second and third pressure sensors 39, 41.
  • the change in the level 43 and thus the amount of dirty liquid supplied to the dirty liquid container 33 in a time interval can also be determined.
  • the present invention is not limited to the fact that the level 43 in the dirty liquid container 33 and thus the amount of dirty liquid supplied in a time interval is determined by means of pressure sensors.
  • the upper region of the dirty liquid container 33 is connected via a dirty liquid line 45 to a dirty liquid receiving device 47, which in the preferred exemplary embodiment shown here is designed as a so-called suction cup.
  • the suction cup has a front sealing lip 49, which has slots extending away from it in the area in which it rests on the floor surface 7 to be cleaned, and a rear sealing lip 51, which is not slotted.
  • the sealing lips 49, 51 and the suction base extend essentially across the width of the floor cleaning machine 1, and the area between the sealing lips 49, 51 is connected to the dirty liquid container 33 via the dirty liquid line 45 and is therefore subjected to a negative pressure when the suction device 35 is in operation. This negative pressure ensures that dirty liquid located on the floor surface 7 to be cleaned is sucked into the dirty liquid container 33.
  • the suction device 35 only has to deliver a small amount of air in order to reduce the negative pressure in the dirty liquid container 33 to maintain. This means that in these situations the motor current of the electric motor 37, which drives the suction device 35, is reduced compared to normal operation.
  • the floor cleaning machine 1 has a control 53, which is connected via lines to the electric motor 37, the float device 27, 29, the pump 23, the flow sensor 21, the drive 7 and the pressure sensors 31, 39, 41, so that the previously mentioned components can transmit their signals to the controller 53.
  • This signal connection makes it possible for the flow sensor 21, the pump 23, the float device 27, 29 and the first pressure sensor 31 to each transmit a signal to the controller 53, which is a measure of the amount of cleaning liquid in a first time interval is fed from the cleaning liquid container 17 to the outlet 13 and thus to the cleaning device 9.
  • the second pressure sensor 39 and the third pressure sensor 41 can also transmit a signal to the controller 53, which is a measure of the amount of dirty liquid that occurs in a second time interval from the Dirty liquid receiving device 47 is recorded and discharged into the dirty liquid container 33.
  • the floor cleaning machine 1 is moved over the floor surface 7 to be cleaned using the chassis 5 and the drive 8, in which case this occurs automatically and the controller 53 also uses sensors (not shown) to determine a route along which the floor cleaning machine 1 moves the floor surface 7 to be cleaned cleans.
  • cleaning liquid is continuously supplied from the cleaning liquid container 17 through the cleaning liquid line 15 into the area of the cleaning device 9 using the pump 23.
  • the driven cleaning element 11 dirt is then removed from the floor surface to be cleaned, while the floor cleaning machine 1 is in Figure 1 Seen further to the right, so that the cleaning liquid loaded with dirt and thus the dirty liquid then reaches the area of the dirt receiving device 47.
  • the suction device 35 with the electric motor 37 connected to it is also in operation, so that a negative pressure is generated in the dirty liquid container 33. Due to this negative pressure, dirty liquid that gets into the area of the dirty liquid receiving device 47 and thus between the sealing lips 49, 51 is sucked out through the dirty liquid line 45 and discharged into the dirty liquid container 33, provided that the dirty liquid line 45 is not blocked or the dirt receiving device 47 is otherwise malfunctioning .
  • the amount of cleaning liquid applied to the floor surface 7 to be cleaned is recorded using the flow sensor 21.
  • this can also be done using the pump 23, using the float device 27, 29 or the first pressure sensor 31 in the manner already described. This quantity is recorded during the first time interval on the basis of the signal transmitted to the controller 53.
  • the signal from the flow sensor 21, the pump 23, the float device 27, 29 and/or the first pressure sensor 31 can be integrated in the controller 53 during the first time interval, so that the integrated signal is then a measure of the cleaning liquid applied to the floor surface 7 to be cleaned during the first time interval.
  • the amount of dirty liquid that is discharged into the dirty liquid container 33 during this second time interval is recorded using the second and third pressure sensors 39, 41 and the signals generated by them during a second time interval.
  • this quantity can be determined by integrating the respective signals.
  • the signal of the third pressure sensor 41 is subtracted from that of the second pressure sensor 39 in order to take into account the effect of the negative pressure prevailing above the level 43 in the dirty liquid container 33.
  • the first time interval and the second time interval are preferably offset from one another in time in such a way that the second time interval starts slightly later than the first time interval.
  • the signal of the motor current of the electric motor 37 of the suction device 35 is also recorded, and this can also be done by integrating the current signal in the controller 53.
  • the signal that reflects the amount of cleaning liquid applied is greater than a first threshold value, this indicates that cleaning liquid is actually being applied to the floor surface 7 to be cleaned. If the amount of dirty liquid removed during the second time interval falls below a second threshold value, a sufficient amount of dirty liquid is not removed, although cleaning liquid is applied. So if the amount of cleaning liquid applied during the first time interval exceeds the first threshold value and during the test the amount of dirty liquid removed during the second time interval falls below the second threshold value, there is a malfunction and the controller outputs a first error signal .
  • Such a malfunction can be caused, for example, by the fact that the sealing lips 49, 51 of the dirty liquid receiving device 47 designed as a suction base are worn, so that sufficient negative pressure is not generated in the suction foot, or that the dirty liquid line 45 between the dirty liquid receiving device 47 and the dirty liquid container 33 is torn or leaking is.
  • the error signal can be used, for example, to stop the drive 8 so that the floor cleaning machine 1 stops. This prevents larger areas of the floor surface to be cleaned from being exposed to cleaning liquid, but the dirty liquid from not being drained away again.
  • the first error signal can be used to switch off the pump 23.
  • the exemplary embodiment of the operating method according to the invention for the floor cleaning machine 1 therefore enables malfunctions in which dirty liquid would remain on the floor surface 7 to be cleaned to be reliably detected.
  • the parallel detection of the motor current and the amount of dirty liquid discharged also makes it possible that the signal of the motor current of the electric motor 37 can also be used to determine errors.

Landscapes

  • Cleaning In General (AREA)
EP23172046.7A 2022-05-10 2023-05-08 Procédé de fonctionnement d'une machine de nettoyage de sol Pending EP4295739A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102022111605.0A DE102022111605A1 (de) 2022-05-10 2022-05-10 Verfahren zum Betrieb einer Bodenreinigungsmaschine

Publications (1)

Publication Number Publication Date
EP4295739A1 true EP4295739A1 (fr) 2023-12-27

Family

ID=86330405

Family Applications (1)

Application Number Title Priority Date Filing Date
EP23172046.7A Pending EP4295739A1 (fr) 2022-05-10 2023-05-08 Procédé de fonctionnement d'une machine de nettoyage de sol

Country Status (5)

Country Link
US (1) US20230363607A1 (fr)
EP (1) EP4295739A1 (fr)
KR (1) KR20230157893A (fr)
CN (1) CN117017129A (fr)
DE (1) DE102022111605A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2400544A (en) * 2000-08-25 2004-10-20 Hoover Co Surface moisture and recovered water level detection and indication in wet suction cleaners
CN108937749A (zh) * 2018-09-14 2018-12-07 杭州热博科技有限公司 拖地机

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2400544A (en) * 2000-08-25 2004-10-20 Hoover Co Surface moisture and recovered water level detection and indication in wet suction cleaners
CN108937749A (zh) * 2018-09-14 2018-12-07 杭州热博科技有限公司 拖地机

Also Published As

Publication number Publication date
KR20230157893A (ko) 2023-11-17
CN117017129A (zh) 2023-11-10
US20230363607A1 (en) 2023-11-16
DE102022111605A1 (de) 2023-11-16

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