EP3721779A1 - Chariot de nettoyage doté d'un dispositif de dosage ainsi que procédé de dosage - Google Patents

Chariot de nettoyage doté d'un dispositif de dosage ainsi que procédé de dosage Download PDF

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Publication number
EP3721779A1
EP3721779A1 EP19168112.1A EP19168112A EP3721779A1 EP 3721779 A1 EP3721779 A1 EP 3721779A1 EP 19168112 A EP19168112 A EP 19168112A EP 3721779 A1 EP3721779 A1 EP 3721779A1
Authority
EP
European Patent Office
Prior art keywords
surface cleaner
cleaning
conductance
cleaning trolley
conductivity
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP19168112.1A
Other languages
German (de)
English (en)
Other versions
EP3721779B1 (fr
Inventor
Robert Auer
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.)
Vermop Salmon GmbH
Original Assignee
Vermop Salmon 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 Vermop Salmon GmbH filed Critical Vermop Salmon GmbH
Priority to ES19168112T priority Critical patent/ES2890958T3/es
Priority to DK19168112.1T priority patent/DK3721779T3/da
Priority to EP19168112.1A priority patent/EP3721779B1/fr
Priority to PL19168112T priority patent/PL3721779T3/pl
Publication of EP3721779A1 publication Critical patent/EP3721779A1/fr
Application granted granted Critical
Publication of EP3721779B1 publication Critical patent/EP3721779B1/fr
Active 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
    • A47L13/00—Implements for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L13/10—Scrubbing; Scouring; Cleaning; Polishing
    • A47L13/50—Auxiliary implements
    • A47L13/51—Storing of cleaning tools, e.g. containers therefor

Definitions

  • the invention relates to a cleaning trolley with a metering device for surface cleaners and a method therefor.
  • the cleaning liquor i.e. a mixture of surface cleaner in water
  • the cleaning liquor made on site.
  • a concentrate of the surface cleaner is carried on conventional cleaning trolleys, while the water required to produce the mixture is handled by the cleaning staff on site due to the otherwise high weight to be carried, e.g. in toilet rooms or kitchens.
  • the cleaning solution is usually dosed manually, using dosing aids such as measuring cups or discrete amounts of surface cleaner that is already packaged in individual portions or that can be dispensed in defined individual portions when added to water.
  • the problems with manual dosing are, on the one hand, the unknown amount of water, on the other hand, the need to clean certain cleaning objects in areas with different dosages, for example in order to use an antiseptic effect of a surface cleaner in a particularly targeted manner at certain points. If there are strict guidelines here, the individual cleaning staff are usually overwhelmed when calculating the correct dosage. Sometimes it is even impossible to do that Determine the dosing amount with the required accuracy because the amount of water is unknown.
  • the invention is based on the object of proposing a cleaning trolley and a method for dosing a surface cleaner on a cleaning trolley, with which it can be ensured that a cleaning person on site correctly carries out the dosage.
  • the cleaning trolley according to the invention with a dosing device for surface cleaner comprises a mixing container that can be filled with any amount up to a maximum amount of water specified by the volume of the mixing container, in particular for receiving or containing a mixture of water and surface cleaner, (at least) one storage container for (at least .
  • One or more different) surface cleaners and a measuring cell preferably in the mixing container to determine the conductivity of the mixture (of water and surface cleaner), with a computing unit being provided that converts the conductivity (actual value) determined by the measuring cell with a specified conductivity (Target value) compares and outputs a signal when the specified conductivity is reached.
  • automatic or semi-automatic dosing takes place directly on the cleaning trolley, which makes use of the fact that, with increasing addition of surface cleaner to a mixing container filled with any amount of water, the conductivity of the Mixture changed and the desired concentration of surface cleaner in the water is characterized by a certain conductance that is stored in the computing unit. If this target value is reached, the computing unit outputs a signal.
  • the signal can be processed with semi-automatic dosing, in which the cleaning staff stops adding the surface cleaner as soon as the signal has been issued.
  • the signal is directed to a dosing device which stops the supply of surface cleaner to the mixing container.
  • the cleaning trolley further comprises a metering element, preferably a metering pump, for adding the surface cleaner from the storage container to the mixing container in order to produce a mixture of water and surface cleaner by conveying the surface cleaner into the mixing container.
  • a metering element preferably a metering pump
  • the arithmetic unit ends the energy supply to the metering pump when the specified conductance is reached.
  • the cleaning trolley further comprises a mixing device (for mixing water and surface cleaner) in the mixing container.
  • a mixing device for mixing water and surface cleaner
  • the cleaning trolley preferably further comprises an input device for user-controlled input of a desired concentration of surface cleaner, as well as a storage device in which the conductance values of one or more surface cleaners are stored depending on their concentration or a calculation algorithm for Determination of the conductivity is stored according to the desired concentration.
  • the user can enter the type of surface cleaner and / or the desired concentration via the input device.
  • the conductivity values stored in the memory device as a function of the concentration of one or more different surface cleaners, or by storing suitable calculation algorithms for determining the conductivity value on the basis of a desired concentration, the correct dosage can be triggered by the input of the user, with different surface cleaners and, moreover, different concentrations of these surface cleaners can be used in order to be able to achieve an optimal cleaning result adapted to the individual cleaning situation.
  • the cleaning trolley preferably also has a digital interface to the computing unit for entering the concentration and / or the type of surface cleaner.
  • the use of a digital interface makes it possible to avoid sources of error in the user-controlled input by the cleaning staff.
  • the corresponding input can be made either via a processing unit installed centrally in the object to be cleaned, or via a PDA (Personal Digital Assistant) carried by the cleaning staff, which allows, for example, weather-dependent individualization of the cleaning tasks and thus the correct performance of special tasks Carrying out work to be carried out regularly, but only to be carried out at certain time intervals. For example, in addition to cleaning tasks that have to be carried out regularly, there may also be special tasks that have to be performed at longer intervals, such as cleaning glass surfaces.
  • Such special specifications can be made via the digital interface to the computing unit which takes on the task of not only informing the cleaning staff about the work to be carried out, but at the same time also informing them about the cleaning agent to be selected and regulating its correct dosage.
  • the concentration of the surface cleaner can be predetermined as a function of the position of the cleaning trolley, the current position of the cleaning trolley being recorded by a central processing unit installed in the object to be cleaned.
  • a suitable position determination can be used to determine in which room or building section the cleaning trolley is moving, in order to then enable the correct concentration of surface cleaner in the form of manual or automatic dosing.
  • the method according to the invention for dosing a surface cleaner on a cleaning trolley comprises the steps of a continuous measurement of the conductance of a mixture of water and surface cleaner while the surface cleaner is being added to the mixing container, the transmission of the measured conductance to a computing unit and the output of a signal by the computing unit, as soon as a master value stored or entered in the processing unit has been reached.
  • this further comprises the introductory step of measuring the conductance of the water and inputting the conductance as a reference value to the computing unit.
  • the conductivity of the pure water is measured before the surface cleaner is added, because depending on the locally different water quality, such as the amount and type of minerals, there are different conductivity values of the pure water, which when using an algorithm to calculate the desired concentration in Depending on the conductance can be taken into account in the calculation equation. This measure can further improve the accuracy of the dosage.
  • Automatic metering is also the preferred variant in the method according to the invention, the operation of a metering pump for adding surface cleaner to the mixture being automatically stopped as soon as the signal has been output by the processing unit.
  • a cleaning trolley 10 is shown schematically, which is deliberately shown only schematically, since the geometry of the cleaning trolley can be selected as desired, as soon as the core components described below for the dosage of surface cleaner are available.
  • the cleaning trolley has a storage container 12 for surface cleaner, which is provided as a liquid concentrate.
  • the storage containers 12, 14 each have an outlet 16 through which the surface cleaner can Storage container is conveyed in the direction of a metering element 18.
  • a single metering element 18 in the form of a metering pump is provided for the two reservoirs 12, 14.
  • each individual storage container can be connected to a separate metering device, especially if the individual surface cleaners cannot be mixed with one another and undesirable precipitations or flocculations or undesirable chemical reactions between individual surface cleaners can occur.
  • the flow connections between the outlets 16 and the metering elements open into a common metering pump.
  • the metering device does not necessarily have to be a pump.
  • the metering element can be a valve that can either be opened and closed manually by the user, or, in the case of automatic metering, is operated automatically, for example by being designed as a solenoid valve.
  • the mixing container 20 can either be removed from the cleaning trolley 10, or it has a filling nozzle with which cleaning liquid can be discharged from the mixing container into a suitable output vessel, in the simplest case into a tub or a bucket. This case is also of interest because after a mixture has been produced in the mixing container 20, only part of the cleaning liquor is removed from the mixing container, and pure water is then refilled into the mixing container. This situation is for the user it is no longer apparent which concentration of surface cleaner is in the mixing container, which underlines the advantage of the dosage according to the invention.
  • a feed channel 22 which connects the metering element 18 to the interior of the mixing container 20, ends in the mixing container 20.
  • a plurality of supply channels 22 are also to be provided, which in the simplest case can be designed in the form of a hose.
  • the mixing container 20 there can also be a mixing device (38) which, in the simplest case, is designed as a stirrer and ensures that the concentration differences of surface cleaner are as small as possible within the mixing container.
  • the mixing device can be coupled to the metering pump 18 via a connection so that the mixing device 38 is always operated when the metering element 18 conveys surface cleaner in the direction of the mixing container 20.
  • the mixing container 20 there is a measuring cell 24 at a suitable location, with the aid of which the conductance of the mixture in the mixing container 20 is measured.
  • the measuring cell 24 is connected to a computer unit 28 with a connected display 30 via a signal connection, in the simplest case via cabling 26.
  • a the display 30, which can also be an input device and can be in the form of a touchpad, for example, the user can enter data, such as the desired type of surface cleaner and the desired concentration, and also receive information.
  • the computing unit 28 has a permanent memory 34 in which either calculation algorithms for the desired conductance of the mixture based on a predetermined concentration of surface cleaner are stored, or empirically determined conductance values at specific concentrations are entered in the form of a mapping, between which can be interpolated .
  • the arithmetic unit 28 receives information about the conductivity determined by the measuring cell 24 during a dosing process and compares this actual value with a nominal value that can be taken directly from the memory 34 or on the basis of the value pairs contained in the memory 34 between concentration and conductivity in the Arithmetic unit is interpolated.
  • the computing unit 28 prevents further dosing of surface cleaner via the dosing element 18 via the signal connection 36 when the setpoint is reached.
  • the computing unit can also take into account that after the dosing element 18 has been closed, there is still a residual amount of surface cleaner in the supply channel 22 and therefore end the dosing somewhat earlier.
  • a central processing unit 40 can be provided, which coordinates the cleaning tasks to be carried out by different cleaning staff with their respective cleaning trolleys and via a communicates wireless connection with the interfaces 32 of the cleaning trolleys.
  • the cleaning staff can be informed about cleaning tasks that have changed at short notice, which may require different surface cleaners and / or different dosages of surface cleaners.
  • the user can be informed so that he can enter the correct input data, or the cleaning mixture in the mixing container 20 can be produced completely automatically so that cleaning staff with poor language skills can also perform the cleaning tasks to be performed without errors.
  • the cleaning trolley can also have an interface 32 via which data can be fed in from outside.
  • a position sensor 36 can also be provided on the cleaning trolley, which detects the position of the cleaning trolley in a larger object to be cleaned, such as a hospital, and which is in information exchange either with the computing unit 28 or with the interface 62. It is thus possible to communicate with a cleaning person via the interface 32 or, in the case of automatic metering, the required cleaning liquors are automatically produced. In the latter case, there would also be a storage tank with fresh water in the cleaning trolley so that a sequence of different cleaning liquors, for example with different concentrations and / or different surface cleaners, can be produced completely automatically and the cleaning staff only has to remove these automatically produced cleaning mixtures.
  • a conductivity of 1.45 mS is specified as the target value and the conductivity value is continuously measured with the help of the measuring cell while the surface cleaner is being metered into the mixing vessel until this target value is reached, whereupon the Dosing is stopped either manually or automatically.
  • the cleaning trolley according to the invention can be of modular construction in order to be able to perform not only simple, semi-automatic dosing tasks, but also complex tasks, which range from automatic dosing to cleaning mixtures that are automatically produced depending on the object to be cleaned. What all embodiments have in common, however, is that, due to the measurement of the conductance, the dosage is completely independent of the amount of water and that which is often found in the professional cleaning sector Overdosing some can be avoided due to ignorance or uncertainty of the cleaner.

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  • Cleaning By Liquid Or Steam (AREA)
  • Electric Vacuum Cleaner (AREA)
EP19168112.1A 2019-04-09 2019-04-09 Chariot de nettoyage doté d'un dispositif de dosage ainsi que procédé de dosage Active EP3721779B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
ES19168112T ES2890958T3 (es) 2019-04-09 2019-04-09 Carro de limpieza con un dispositivo de dosificación así como procedimiento para la dosificación
DK19168112.1T DK3721779T3 (da) 2019-04-09 2019-04-09 Rengøringsvogn med en doseringsindretning samt fremgangsmåde til dosering
EP19168112.1A EP3721779B1 (fr) 2019-04-09 2019-04-09 Chariot de nettoyage doté d'un dispositif de dosage ainsi que procédé de dosage
PL19168112T PL3721779T3 (pl) 2019-04-09 2019-04-09 Wózek czyszczący z przyrządem dozującym oraz sposób dozowania

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19168112.1A EP3721779B1 (fr) 2019-04-09 2019-04-09 Chariot de nettoyage doté d'un dispositif de dosage ainsi que procédé de dosage

Publications (2)

Publication Number Publication Date
EP3721779A1 true EP3721779A1 (fr) 2020-10-14
EP3721779B1 EP3721779B1 (fr) 2021-09-01

Family

ID=66102946

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19168112.1A Active EP3721779B1 (fr) 2019-04-09 2019-04-09 Chariot de nettoyage doté d'un dispositif de dosage ainsi que procédé de dosage

Country Status (4)

Country Link
EP (1) EP3721779B1 (fr)
DK (1) DK3721779T3 (fr)
ES (1) ES2890958T3 (fr)
PL (1) PL3721779T3 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3141495A1 (de) * 1981-10-20 1983-05-05 NWG Nord-West-Gebäudereinigung GmbH & Co KG, 4100 Duisburg Geraetewagen fuer reinigungszwecke und verfahren zum reinigen von fussboeden
US6070808A (en) * 1998-05-18 2000-06-06 Hygeian Technologies, Ltd. Mobile spraying and cleaning apparatus
US20040195346A1 (en) * 2003-02-19 2004-10-07 Mcintyre Arthur N. Portable wash station
DE102017128600B3 (de) * 2017-12-01 2019-03-14 Pfennig Reinigungstechnik Gmbh Dosiersystem

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3141495A1 (de) * 1981-10-20 1983-05-05 NWG Nord-West-Gebäudereinigung GmbH & Co KG, 4100 Duisburg Geraetewagen fuer reinigungszwecke und verfahren zum reinigen von fussboeden
US6070808A (en) * 1998-05-18 2000-06-06 Hygeian Technologies, Ltd. Mobile spraying and cleaning apparatus
US20040195346A1 (en) * 2003-02-19 2004-10-07 Mcintyre Arthur N. Portable wash station
DE102017128600B3 (de) * 2017-12-01 2019-03-14 Pfennig Reinigungstechnik Gmbh Dosiersystem

Also Published As

Publication number Publication date
DK3721779T3 (da) 2021-10-04
PL3721779T3 (pl) 2021-12-20
EP3721779B1 (fr) 2021-09-01
ES2890958T3 (es) 2022-01-25

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