EP1775032A1 - Surface washing device - Google Patents

Surface washing device Download PDF

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Publication number
EP1775032A1
EP1775032A1 EP06015733A EP06015733A EP1775032A1 EP 1775032 A1 EP1775032 A1 EP 1775032A1 EP 06015733 A EP06015733 A EP 06015733A EP 06015733 A EP06015733 A EP 06015733A EP 1775032 A1 EP1775032 A1 EP 1775032A1
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EP
European Patent Office
Prior art keywords
surface cleaning
cleaning
measuring
cleaning device
cleaning medium
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Application number
EP06015733A
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German (de)
French (fr)
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EP1775032B1 (en
Inventor
Jörg Hoffmann
Werner Trentmann
Christian Düker
Bernhard Sievering
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BVL Oberflachentechnik GmbH
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BVL Oberflachentechnik GmbH
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Publication of EP1775032A1 publication Critical patent/EP1775032A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam

Definitions

  • the present invention relates to a surface cleaning device with a cleaning chamber, which is designed for receiving by means of a cleaning medium to be cleaned, and with at least one tank from which the cleaning medium via a feed device into the cleaning chamber and introduced into the cleaning medium after the cleaning process by means of a Abvantraum is traceable.
  • a cleaning medium such as a washing liquid
  • the cleaning medium is passed through filter systems after washing, if necessary, it fouled over time and must be replaced.
  • the exchange of the cleaning medium is initiated here, for example, by visual inspection of the cleaning medium or the purified industrial goods, which is a cumbersome and lame method.
  • a too late or too early replacement of the cleaning medium with an environmental impact high costs and an increased disposal costs for the cleaning medium is connected.
  • the staff provided for operating the surface cleaning device receives representative information about the cleanliness of the cleaning medium through the analysis device and can make the replacement of the cleaning medium in good time depending on the purity requirements for the surface of the industrial goods.
  • the analysis device can be connected via a bypass to the cleaning circuit of the surface cleaning device.
  • a cleaning medium in this case preferably washing solutions or other fluids are used, so that the surface cleaning device comprises a plurality of tubes or other conduit means to which the analysis device is flanged in a simple manner.
  • the actual circulation of the cleaning medium is not affected by the additional connection of the analyzer, since only small amounts of the cleaning medium to measure its pollution are needed.
  • the analysis device can be so completely integrated into the circuit that, for example, the entire cleaning medium can be checked on its way into the cleaning chamber.
  • the cleaning medium is usually introduced from the tank of the surface cleaning device via a feed device into the cleaning chamber.
  • the feed device has a rotatable spray frame provided with spray nozzles, which rotates about a loading basket which can be inserted into the cleaning chamber with the industrial product to be cleaned.
  • the nozzles may be fixedly mounted on the frame or recessed into the walls of the cleaning chamber while the loading basket is disposed on a turntable.
  • the cleaning medium which is contaminated during the cleaning by the inclusion of, for example, oils or fats, is returned exclusively via the discharge device and optionally provided cleaning systems back into the tank.
  • the discharge device for example, be provided between the cleaning chamber and tank plate phase separator for cleaning the contaminated cleaning medium.
  • collecting areas for the gravitational deposition of dirt particles present in the cleaning medium can be provided in the cleaning chamber or in the tank.
  • the analyzer may advantageously continue to be connected either to the discharge device or directly to the tank.
  • the analysis device for measuring the turbidity of the cleaning medium.
  • Such a measurement of optically visible contaminants is already sufficient for a variety of industrial applications. Only in the case of very high purity requirements, for example the contamination of the cleaning medium with the lowest, non-visible concentrations of oil, does it require, in addition or as an alternative to a pure brightness measurement, for example, a spectral analysis of the cleaning medium.
  • the analysis device is then according to form according to the invention.
  • Fig. 1 shows a cleaning chamber 2 located in a housing 1, the walls of which are formed in the schematic representation of the housing wall.
  • the cleaning chamber 2 is provided with a non-illustrated, closable opening through which the industrial product to be cleaned can be placed on a turntable 3.
  • the spray nozzles arranged in the spray frame 4 automatically start to spray the cleaning medium 5 onto the industrial product to be cleaned, while the turntable 3 rotates with the industrial product.
  • the cleaning medium 5 is conveyed out of the tank 6 in the direction of the cleaning chamber 2.
  • a branch is provided, via which a measuring device 11 of an analysis device 10 is supplied with a part of the cleaning medium 5.
  • the inflow of the cleaning medium 5 can be regulated for example by means of a control valve. From this measuring device 11, the cleaning medium 5 used for turbidity measurement is returned to the tank 6.
  • the contaminated cleaning medium 5 accumulates at the bottom of the cleaning chamber 2 and is guided by the slope of the bottom to a filter unit 7, which forms the transition to the tank 6.
  • the filter unit 7 in this case forms the discharge device.
  • the tank 6 itself in turn has a collecting area 8 in which contaminants not filtered out can be deposited. This collection area is to be emptied from time to time.
  • the measuring device 11 is actuated via a signal line 12 on the one hand, on the other hand takes place via this signal or data line 12 and the transmission of the measured values to an evaluation device 13.
  • This evaluation device 13 may be, for example, a computer provided with a corresponding software. A continuous measurement of the cleaning medium 5.
  • the measuring device 11 and the evaluation device 13 may be arranged in a single housing, but this may also be two different devices, which are connected to each other only via the signal line 12.
  • the cleaning medium 5 is passed through the measuring device and flows here, for example through a glass tube 14, which forms a flow area 15.
  • a light source 16 a white light source, for example, a commercial light bulb is used, whose light is directed by means of a diaphragm device 18 in the direction of the flow area 15.
  • the area sensor 19 for example a CMOS sensor, records brightness values per measurement over its entire area and therefore a multiplicity of measurement points, which averaged produce an average gray value.
  • the averaging can be carried out here by the measuring unit 17 or by the evaluation device 13.
  • a value is determined over a large area of the cleaning medium 5, which already averages over many impurities such as streaks or clouds in the cleaning medium 5 and therefore provides a good value for the contamination of the medium 5.
  • This value is converted into a value for the contamination on the basis of calibration data contained in a memory unit of the evaluation device and then specified and stored on a display, for example.
  • a measure of the concentration (contamination or contamination) of the cleaning medium 5 can, for example, from the average gray value of all pixels below Incorporation of the Lambert-Beer's Law can be calculated from radiated and transmitted intensity. The required parameters are entered beforehand or specified via the calibration. Although the Lambert-Beer law is normally only applicable to monochromatic radiation and dilute solutions, it has been found that such an evaluation can be used to detect at least optically visible contaminants present in a large number of applications.
  • the surface cleaning device according to the invention equipped with the analysis device 10 can therefore indicate the contamination of the cleaning medium 5 in a simple and cost-effective manner. The cleaning medium 5 can thus be replaced at the right time.
  • a camera equipped with a commercially available CMOS sensor performs several dozen measurements per second, resulting in continuous monitoring of the cleaning medium.
  • this invention may also be constructed differently.
  • simple brightness-sensitive phototransistors or wavelength-sensitive measuring elements which are tuned to the emission wavelengths of the light source in order to obtain further information about the contamination of the cleaning medium 5 can be used.
  • the surface cleaning device stops its operation to replace the cleaning medium 5.
  • the replacement of the cleaning medium 5 can in this case also be fully automatic, so that no further operating personnel for the replacement of the cleaning medium is necessary.

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  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Optical Measuring Cells (AREA)
  • Golf Clubs (AREA)
  • Bidet-Like Cleaning Device And Other Flush Toilet Accessories (AREA)

Abstract

The device has a cleaning chamber (2) that is adapted to receive goods to be cleaned. A tank (6) is provided for receiving a cleaning medium (5), and a supply device is provided in the cleaning chamber. The supply device conveys the cleaning medium from the tank to the chamber. A return device is arranged for returning the cleaning medium from the chamber to the tank. An analysis device (10) measures contamination of the medium.

Description

Die vorliegende Erfindung betrifft eine Oberflächenreinigungsvorrichtung mit einer Reinigungskammer, welche zur Aufnahme von mittels eines Reinigungsmediums zu reinigendem Gut ausgebildet ist, sowie mit zumindest einem Tank, aus dem das Reinigungsmedium über eine Zuführeinrichtung in die Reinigungskammer einbringbar und in den das Reinigungsmedium nach dem Reinigungsvorgang mittels einer Abführeinrichtung zurückführbar ist.The present invention relates to a surface cleaning device with a cleaning chamber, which is designed for receiving by means of a cleaning medium to be cleaned, and with at least one tank from which the cleaning medium via a feed device into the cleaning chamber and introduced into the cleaning medium after the cleaning process by means of a Abführrichtung is traceable.

In einer Vielzahl industrieller Unternehmen müssen täglich verschiedene Industriegüter von Ölen, Fetten oder anderen Verschmutzungen gereinigt werden, beispielsweise zur Vorbehandlung für ein anschließendes Lackieren eines Metallbleches, für eine Zwischenreinigung innerhalb einer Fertigungsstraße für Getriebe oder im Bereich der Instandsetzung vor Wiedereinbau des instandgesetzten Teiles. Abhängig von der Verwendung der einzelnen zu reinigenden Industriegüter sind unterschiedlich hohe Anforderungen an die Oberflächenreinheit des Industrieguts zu stellen.In a large number of industrial companies, various industrial goods have to be cleaned daily from oils, fats or other contaminants, for example for pretreatment for subsequent painting of a metal sheet, for intermediate cleaning within a production line for gearboxes or in the area of repair prior to reinstalling the repaired part. Depending on the use of the individual industrial goods to be cleaned, different demands must be placed on the surface cleanliness of the industrial goods.

Zum Reinigen der Industriegüter werden üblicherweise Oberflächenreinigungsanlagen verwendet, in denen mittels eines Reinigungsmediums, beispielsweise einer Waschflüssigkeit, das zu reinigende Bauteil gewaschen wird. Obwohl das Reinigungsmedium gegebenenfalls nach dem Waschvorgang durch Filtersysteme geleitet wird, verschmutzt es im Laufe der Zeit und muß ausgetauscht werden. Mit dem Austausch des Reinigungsmediums der Oberflächenreinigungsvorrichtung gehen regelmäßig hohe Kosten einher, so daß es erstrebenswert ist, das Reinigungsmedium erst dann auszutauschen, wenn die Sauberkeit der Oberfläche für nachfolgend zu reinigende Industriegüter nicht mehr gewährleistet werden kann. Der Austausch des Reinigungsmediums wird hierbei beispielsweise nach Sichtkontrolle des Reinigungsmediums oder des gereinigten Industriegutes eingeleitet, was ein umständliches und langwidriges Verfahren ist. Insbesondere ist ein zu später oder zu früher Austausch des Reinigungsmediums mit einer Umweltbelastung, hohen Kosten und einem gesteigerten Entsorgungsaufwand für das Reinigungsmedium verbunden.For cleaning the industrial goods usually surface cleaning systems are used, in which by means of a cleaning medium, such as a washing liquid, the component to be cleaned is washed. Although the cleaning medium is passed through filter systems after washing, if necessary, it fouled over time and must be replaced. Go with the replacement of the cleaning medium of the surface cleaning device regularly associated with high costs, so that it is desirable to replace the cleaning medium only when the cleanliness of the surface for subsequently cleaned industrial goods can no longer be guaranteed. The exchange of the cleaning medium is initiated here, for example, by visual inspection of the cleaning medium or the purified industrial goods, which is a cumbersome and lame method. In particular, a too late or too early replacement of the cleaning medium with an environmental impact, high costs and an increased disposal costs for the cleaning medium is connected.

Es ist daher Aufgabe der vorliegenden Erfindung, eine Oberflächenreinigungsvorrichtung zu schaffen, deren Handhabung bezüglich des Austausches des Reinigungsmediums verbessert ist.It is therefore an object of the present invention to provide a surface cleaning device, the handling of which is improved with respect to the exchange of the cleaning medium.

Diese Aufgabe wird gelöst durch eine Vorrichtung gemäß dem Oberbegriff des Anspruchs 1, die sich durch eine Analysevorrichtung zur Messung des Reinigungsmediums auszeichnet.This object is achieved by a device according to the preamble of claim 1, which is characterized by an analysis device for measuring the cleaning medium.

Durch die Analysevorrichtung ist eine Überwachung der Verunreinigung des Reinigungsmediums im Betrieb vornehmbar. Das zur Bedienung der Oberflächenreinigungsvorrichtung vorgesehene Personal erhält durch die Analysevorrichtung repräsentative Informationen über die Sauberkeit des Reinigungsmediums und kann in Abhängigkeit der Reinheitsanforderungen an die Oberfläche des Industriegutes rechtzeitig den Austausch des Reinigungsmediums vornehmen.By the analysis device monitoring of the contamination of the cleaning medium during operation is vornehmbar. The staff provided for operating the surface cleaning device receives representative information about the cleanliness of the cleaning medium through the analysis device and can make the replacement of the cleaning medium in good time depending on the purity requirements for the surface of the industrial goods.

Vorteilhafterweise ist die Analysevorrichtung über einen Bypass an den Reinigungskreislauf der Oberflächenreinigungsvorrichtung anschließbar. Als Reinigungsmedium sind hierbei vorzugsweise Waschlösungen oder andere Fluide zu verwenden, so daß die Oberflächenreinigungsvorrichtung eine Vielzahl von Rohren oder anderen Leitungseinrichtungen aufweist, an die die Analysevorrichtung auf einfache Art anflanschbar ist. Der eigentliche Kreislauf des Reinigungsmediums wird durch den zusätzlichen Anschluß der Analysevorrichtung nicht beeinträchtigt, da lediglich geringe Mengen des Reinigungsmediums zur Messung seiner Verschmutzung benötigt werden. Alternativ ist die Analysevorrichtung in einer weiteren erfindungsgemäßen Ausbildung so vollständig in den Kreislauf integrierbar, daß beispielsweise das gesamte Reinigungsmedium auf seinem Weg in die Reinigungskammer überprüft werden kann.Advantageously, the analysis device can be connected via a bypass to the cleaning circuit of the surface cleaning device. As a cleaning medium in this case preferably washing solutions or other fluids are used, so that the surface cleaning device comprises a plurality of tubes or other conduit means to which the analysis device is flanged in a simple manner. The actual circulation of the cleaning medium is not affected by the additional connection of the analyzer, since only small amounts of the cleaning medium to measure its pollution are needed. Alternatively, in another embodiment of the invention, the analysis device can be so completely integrated into the circuit that, for example, the entire cleaning medium can be checked on its way into the cleaning chamber.

Das Reinigungsmedium wird üblicherweise aus dem Tank der Oberflächenreinigungsvorrichtung über eine Zuführeinrichtung in die Reinigungskammer eingebracht. In dieser wird das Industriegut je nach Ausbildung der Oberflächenreinigungsvorrichtung auf unterschiedliche Weise gereinigt. Beispielsweise weist die Zuführeinrichtung einen drehbaren, mit Sprühdüsen versehenen Sprührahmen auf, der um einen in die Reinigungskammer einsetzbaren Beladekorb mit dem zu reinigenden Industriegut rotiert. Alternativ können die Düsen auf dem Rahmen auch fest installiert oder in die Wände der Reinigungskammer eingelassen sein, während der Beladekorb auf einem Drehteller angeordnet ist.The cleaning medium is usually introduced from the tank of the surface cleaning device via a feed device into the cleaning chamber. In this industrial product is cleaned in different ways depending on the design of the surface cleaning device. For example, the feed device has a rotatable spray frame provided with spray nozzles, which rotates about a loading basket which can be inserted into the cleaning chamber with the industrial product to be cleaned. Alternatively, the nozzles may be fixedly mounted on the frame or recessed into the walls of the cleaning chamber while the loading basket is disposed on a turntable.

Das Reinigungsmedium, welches während der Reinigung durch die Aufnahme von beispielsweise Ölen oder Fetten verunreinigt wird, wird ausschließlich über die Abführeinrichtung und gegebenenfalls vorzusehene Reinigungssysteme wieder in den Tank zurückgeführt. Beispielsweise können zwischen Reinigungskammer und Tank Plattenphasentrenner zur Reinigung des verunreinigten Reinigungsmediums vorgesehen sein. Ebenfalls können in der Reinigungskammer oder in dem Tank Sammelbereiche zur gravitationsbedingten Ablagerung von in dem Reinigungsmedium vorhandenen Schmutzpartikeln vorgesehen werden. Die Analysevorrichtung kann vorteilhafterweise weiterhin entweder an die Abführeinrichtung oder direkt an den Tank angeschlossen werden.The cleaning medium, which is contaminated during the cleaning by the inclusion of, for example, oils or fats, is returned exclusively via the discharge device and optionally provided cleaning systems back into the tank. For example, be provided between the cleaning chamber and tank plate phase separator for cleaning the contaminated cleaning medium. Likewise, collecting areas for the gravitational deposition of dirt particles present in the cleaning medium can be provided in the cleaning chamber or in the tank. The analyzer may advantageously continue to be connected either to the discharge device or directly to the tank.

Für die Messung der Verunreinigung des Reinigungsmediums gibt eine Vielzahl möglicher, bekannter Verfahren, die unterschiedliche Analyseschwerpunkte aufweisen. Aufgrund der Einfachheit des Aufbaus und der kostengünstigen Komponenten hat es sich als besonders vorteilhaft erwiesen, die Analysevorrichtung zur Messung der Trübung des Reinigungsmediums auszubilden. Eine solche Messung optisch sichtbarer Verunreinigungen ist bereits für eine Vielzahl industrieller Anwendungen ausreichend. Lediglich bei sehr hohen Reinheitsanforderungen, beispielsweise der Verunreinigung des Reinigungsmediums mit geringsten, nicht sichtbaren Konzentrationen von Öl, bedarf es ergänzend oder alternativ zu einer reinen Helligkeitsmessung beispielsweise einer Spektralanalyse des Reinigungsmediums. Hierfür ist die Analysevorrichtung dann erfindungsgemäß entsprechend auszubilden.For the measurement of the contamination of the cleaning medium are a variety of possible, known methods having different focal points of analysis. Due to the simplicity of the structure and the inexpensive components, it has proven to be particularly advantageous to form the analysis device for measuring the turbidity of the cleaning medium. Such a measurement of optically visible contaminants is already sufficient for a variety of industrial applications. Only in the case of very high purity requirements, for example the contamination of the cleaning medium with the lowest, non-visible concentrations of oil, does it require, in addition or as an alternative to a pure brightness measurement, for example, a spectral analysis of the cleaning medium. For this purpose, the analysis device is then according to form according to the invention.

Weitere Vorteile und Einzelheiten der Erfindung lassen sich den übrigen Unteransprüchen sowie der nachfolgenden Figurenbeschreibung entnehmen. Schematisch dargestellt zeigt:

Fig. 1
eine erfindungsgemäße Reinigungsvorrichtung,
Fig. 2
den Ausschnitt B aus Fig. 1.
Further advantages and details of the invention can be taken from the remaining subclaims and the following description of the figures. Schematically shows:
Fig. 1
a cleaning device according to the invention,
Fig. 2
the detail B of FIG. 1.

Fig. 1 zeigt eine in einem Gehäuse 1 befindliche Reinigungskammer 2, deren Wände in der schematischen Darstellung von der Gehäusewandung gebildet werden. Die Reinigungskammer 2 ist mit einer nicht dargestellten, verschließbaren Öffnung versehen, durch die das zu reinigende Industriegut auf einen Drehkranz 3 gestellt werden kann. Mit Schließen der Öffnungsklappe beginnen automatisch die in dem Sprührahmen 4 angeordneten Sprühdüsen das Reinigungsmedium 5 auf das zu reinigende Industriegut zu sprühen, während sich der Drehkranz 3 mit dem Industriegut dreht.Fig. 1 shows a cleaning chamber 2 located in a housing 1, the walls of which are formed in the schematic representation of the housing wall. The cleaning chamber 2 is provided with a non-illustrated, closable opening through which the industrial product to be cleaned can be placed on a turntable 3. When the opening flap is closed, the spray nozzles arranged in the spray frame 4 automatically start to spray the cleaning medium 5 onto the industrial product to be cleaned, while the turntable 3 rotates with the industrial product.

Mittels einer Pumpeneinheit 9 der Zuführeinrichtung wird das Reinigungsmedium 5 aus dem Tank 6 in Richtung der Reinigungskammer 2 gefördert. Zwischen Reinigungskammer 2 und Pumpeneinheit 9 ist eine Abzweigung vorgesehen, über die eine Meßvorrichtung 11 einer Analysevorrichtung 10 mit einem Teil des Reinigungsmediums 5 versorgt wird. Der Zufluß des Reinigungsmediums 5 kann beispielsweise mittels eines Regelventils reguliert werden. Von dieser Meßvorrichtung 11 wird das für die Trübungsmessung verwendete Reinigungsmedium 5 wieder in den Tank 6 geleitet.By means of a pump unit 9 of the feed device, the cleaning medium 5 is conveyed out of the tank 6 in the direction of the cleaning chamber 2. Between cleaning chamber 2 and pump unit 9, a branch is provided, via which a measuring device 11 of an analysis device 10 is supplied with a part of the cleaning medium 5. The inflow of the cleaning medium 5 can be regulated for example by means of a control valve. From this measuring device 11, the cleaning medium 5 used for turbidity measurement is returned to the tank 6.

Das verunreinigte Reinigungsmedium 5 sammelt sich am Boden der Reinigungskammer 2 an und wird durch das Gefälle des Bodens zu einer Filtereinheit 7 geleitet, die den Übergang zu dem Tank 6 bildet. Die Filtereinheit 7 bildet hierbei die Abführeinrichtung aus.The contaminated cleaning medium 5 accumulates at the bottom of the cleaning chamber 2 and is guided by the slope of the bottom to a filter unit 7, which forms the transition to the tank 6. The filter unit 7 in this case forms the discharge device.

Der Tank 6 selber weist wiederum einen Sammelbereich 8 auf, in dem sich vom Filter nicht herausgefilterte Schmutzstoffe ablagern können. Dieser Sammelbereich ist von Zeit zu Zeit zu entleeren.The tank 6 itself in turn has a collecting area 8 in which contaminants not filtered out can be deposited. This collection area is to be emptied from time to time.

Die Meßvorrichtung 11 wird über eine Signalleitung 12 einerseits angesteuert, andererseits findet über diese Signal- bzw. Datenleitung 12 auch die Übermittlung der Meßwerte an eine Auswertevorrichtung 13 statt. Diese Auswertevorrichtung 13 wiederum kann beispielsweise ein mit einer entsprechenden Software versehener Computer sein. Eine kontinuierliche Messung des Reinigungsmediums 5.The measuring device 11 is actuated via a signal line 12 on the one hand, on the other hand takes place via this signal or data line 12 and the transmission of the measured values to an evaluation device 13. This evaluation device 13, in turn, may be, for example, a computer provided with a corresponding software. A continuous measurement of the cleaning medium 5.

Die Meßvorrichtung 11 und die Auswertevorrichtung 13 können in einem einzigen Gehäuse angeordnet sein, es kann sich hierbei jedoch auch um zwei verschiedene Geräte handeln, die lediglich über die Signalleitung 12 miteinander verbunden sind.The measuring device 11 and the evaluation device 13 may be arranged in a single housing, but this may also be two different devices, which are connected to each other only via the signal line 12.

In Fig. 2 ist der Aufbau der Meßvorrichtung 11 näher dargestellt. Das Reinigungsmedium 5 wird durch die Meßvorrichtung hindurchgeführt und fließt hierbei beispielsweise durch ein Glasröhrchen 14, welches einen Durchflußbereich 15 ausbildet. Dieser befindet sich zwischen einer Lichtquelle 16 und einer Meßeinheit 17, die bei diesem Ausführungsbeispiel von einer Kamera gebildet wird. Als Lichtquelle 16 wird eine Weißlichtquelle, beispielsweise eine handelsübliche Glühbirne verwendet, deren Licht mittels einer Blendenvorrichtung 18 in Richtung des Durchflußbereiches 15 gelenkt wird. Aufgrund der Verschmutzung bzw. Verunreinigung des Reinigungsmediums gelangt nur ein Teil des Lichts zur Meßeinheit 17 und wird dort von einem Flächensensor 19 registriert. Der Flächensensor 19, beispielsweise ein CMOS-Sensor, nimmt pro Messung über seine gesamte Fläche und daher eine Vielzahl von Meßpunkten Helligkeitswerte auf, die gemittelt einen mittleren Grauwert ergeben. Die Mittelung kann hierbei von der Meßeinheit 17 oder von der Auswertevorrichtung 13 vorgenommen werden.In Fig. 2, the construction of the measuring device 11 is shown in more detail. The cleaning medium 5 is passed through the measuring device and flows here, for example through a glass tube 14, which forms a flow area 15. This is located between a light source 16 and a measuring unit 17, which is formed in this embodiment of a camera. As the light source 16, a white light source, for example, a commercial light bulb is used, whose light is directed by means of a diaphragm device 18 in the direction of the flow area 15. Due to the contamination or contamination of the cleaning medium only a part of the light reaches the measuring unit 17 and is registered there by an area sensor 19. The area sensor 19, for example a CMOS sensor, records brightness values per measurement over its entire area and therefore a multiplicity of measurement points, which averaged produce an average gray value. The averaging can be carried out here by the measuring unit 17 or by the evaluation device 13.

Aufgrund der flächigen Ausgestaltung und der Vielzahl der Meßpunkte des Flächensensors wird über einen großen Bereich des Reinigungsmediums 5 ein Wert ermittelt, der bereits über viele Verunreinigungen wie Schlieren oder Wolken im Reinigungsmedium 5 mittelt und daher einen guten Wert für die Verunreinigung des Mediums 5 liefert. Dieser Wert wird anhand von in einer Speichereinheit der Auswertevorrichtung befindlichen Kalibrierungsdaten in einen Wert für die Verunreinigung umgerechnet und dann beispielsweise auf einem Display angegeben und gespeichert werden.Due to the planar configuration and the multiplicity of measuring points of the surface sensor, a value is determined over a large area of the cleaning medium 5, which already averages over many impurities such as streaks or clouds in the cleaning medium 5 and therefore provides a good value for the contamination of the medium 5. This value is converted into a value for the contamination on the basis of calibration data contained in a memory unit of the evaluation device and then specified and stored on a display, for example.

Ein Maß für die Konzentration (Verschmutzung bzw. Verunreinigung) des Reinigungsmediums 5 kann beispielsweise aus dem mittleren Grauwert aller Pixel unter Einbindung des Lambert-Beer'schen-Gesetzes aus eingestrahlter und transmitierter Intensität berechnet werden. Die hierfür benötigten Parameter werden zuvor eingegeben bzw. über die Kalibrierung vorgegeben. Obwohl das Lambert-Beer'sche-Gesetz normalerweise nur für monochromatische Strahlung und verdünnte Lösungen verwendbar ist, hat es sich gezeigt, daß mit einer solchen Auswertung zumindest optisch sichtbare Verschmutzungen, die bei einer Vielzahl der Anwendungsbereiche vorliegen, gut ermittelt werden können. Die mit der Analysevorrichtung 10 ausgestattete, erfindungsgemäße Oberflächenreinigungsvorrichtung kann daher auf einfache und kostengünstige Weise die Verschmutzung des Reinigungsmediums 5 anzeigen. Das Reinigungsmedium 5 kann somit zum richtigen Zeitpunkt ausgetauscht werden.A measure of the concentration (contamination or contamination) of the cleaning medium 5 can, for example, from the average gray value of all pixels below Incorporation of the Lambert-Beer's Law can be calculated from radiated and transmitted intensity. The required parameters are entered beforehand or specified via the calibration. Although the Lambert-Beer law is normally only applicable to monochromatic radiation and dilute solutions, it has been found that such an evaluation can be used to detect at least optically visible contaminants present in a large number of applications. The surface cleaning device according to the invention equipped with the analysis device 10 can therefore indicate the contamination of the cleaning medium 5 in a simple and cost-effective manner. The cleaning medium 5 can thus be replaced at the right time.

Eine mit einem handelsüblichen CMOS-Sensor ausgestattete Kamera führt mehrere Dutzend Messungen pro Sekunde durch, was zu einer kontinuierlichen Überwachung des Reinigungsmediums führt.A camera equipped with a commercially available CMOS sensor performs several dozen measurements per second, resulting in continuous monitoring of the cleaning medium.

Alternativ zu einer handelsüblichen Weißlichtquelle kann auch ein Laser verwendet werden, dessen Licht von einem auf die Laserwellenlänge abgestimmten Empfänger aufgefangen werden kann. Die Verwendung einer handelsüblichen Glühbirne mit einer handelsüblichen Kamera führt zu einer kostengünstigen Analysevorrichtung 10, mit deren Hilfe ein gutes Abbild der im industriellen Waschbetrieb vorkommenden Trübungen gewonnen wird.As an alternative to a commercially available white light source, it is also possible to use a laser whose light can be picked up by a receiver tuned to the laser wavelength. The use of a commercially available light bulb with a commercially available camera leads to a cost-effective analysis device 10, with the help of a good image of the occurring in industrial washing operation turbidity is obtained.

Neben der vorstehend beschriebenen Meßvorrichtung kann diese erfindungsgemäß auch anders aufgebaut sein. So können einfache helligkeitssensible Fototransistoren oder wellenlängensensitive Meßelemente, die auf die Emissionswellenlängen der Lichtquelle abgestimmt sind, um weitere Informationen über die Verunreinigung des Reinigungsmediums 5 zu erhalten, verwendet werden.In addition to the measuring device described above, this invention may also be constructed differently. Thus, simple brightness-sensitive phototransistors or wavelength-sensitive measuring elements which are tuned to the emission wavelengths of the light source in order to obtain further information about the contamination of the cleaning medium 5 can be used.

Es ist weiterhin von Vorteil, die Steuerung der Oberflächenreinigungsvorrichtung mit der Analysevorrichtung 10 zu verknüpfen, so daß beispielsweise bei Überschreiten eines vorgegebenen Verschmutzungsgrades die Oberflächenreinigungsvorrichtung ihren Betrieb stoppt, um das Reinigungsmedium 5 auszutauschen. Der Austausch des Reinigungsmediums 5 kann hierbei auch vollautomatisch erfolgen, so daß kein weiteres Bedienpersonal für den Austausch des Reinigungsmediums notwendig ist.It is also advantageous to combine the control of the surface cleaning device with the analysis device 10 so that, for example, when a predetermined degree of contamination is exceeded, the surface cleaning device stops its operation to replace the cleaning medium 5. The replacement of the cleaning medium 5 can in this case also be fully automatic, so that no further operating personnel for the replacement of the cleaning medium is necessary.

Claims (20)

Oberflächenreinigungsvorrichtung mit einer Reinigungskammer (2), welche zur Aufnahme von mittels eines Reinigungsmediums (5) zu reinigendem Gut ausgebildet ist, sowie mit zumindest einem Tank (6), aus dem das Reinigungsmedium (5) über eine Zuführeinrichtung in die Reinigungskammer (2) einbringbar und in den das Reinigungsmedium (5) mittels einer Abführeinrichtung nach dem Reinigungsvorgang zurückführbar ist, gekennzeichnet durch eine Analysevorrichtung (10) zur Messung der Verunreinigung des Reinigungsmediums (5).Surface cleaning device with a cleaning chamber (2), which is designed for receiving by means of a cleaning medium (5) to be cleaned Good, and at least one tank (6) from which the cleaning medium (5) via a feed device into the cleaning chamber (2) can be introduced and in which the cleaning medium (5) is traceable by means of a discharge device after the cleaning process, characterized by an analysis device (10) for measuring the contamination of the cleaning medium (5). Oberflächenreinigungsvorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Analysevorrichtung (10) über einen Bypass an den Reinigungskreislauf anschließbar ist.Surface cleaning device according to claim 1, characterized in that the analysis device (10) can be connected via a bypass to the cleaning circuit. Oberflächenreinigungsvorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Analysevorrichtung (10) an die Zuführeinrichtung anschließbar ist.Surface cleaning device according to claim 1 or 2, characterized in that the analysis device (10) can be connected to the feed device. Oberflächenreinigungsvorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Analysevorrichtung (10) an die Abführeinrichtung anschließbar ist.Surface cleaning device according to one of claims 1 to 3, characterized in that the analysis device (10) can be connected to the discharge device. Oberflächenreinigungsvorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Analysevorrichtung an den Tank (6) anschließbar ist.Surface cleaning device according to claim 1, characterized in that the analysis device can be connected to the tank (6). Oberflächenreinigungsvorrichtung nach einem der Ansprüche 1 bis 5, gekennzeichnet durch ein den Durchfluß des Reinigungsmediums (5) durch die Analysevorrichtung (10) regelndes Ventil.Surface cleaning device according to one of Claims 1 to 5, characterized by a valve which regulates the flow of the cleaning medium (5) through the analysis device (10). Oberflächenreinigungsvorrichtung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die Analysevorrichtung (10) eine Meßvorrichtung (11) und eine mit dieser verbundene Auswertevorrichtung (13) aufweist.Surface cleaning device according to one of claims 1 to 6, characterized in that the analysis device (10) has a measuring device (11) and an evaluation device (13) connected thereto. Oberflächenreinigungsvorrichtung nach Anspruch 7, dadurch gekennzeichnet, daß die eine Rechnereinheit aufweisende Auswertevorrichtung (13) zur Steuerung der Meßvorrichtung (11) ausgebildet ist.Surface cleaning device according to claim 7, characterized in that the evaluation unit (13) having a computer unit is designed to control the measuring device (11). Oberflächenreinigungsvorrichtung nach Anspruch 7 oder 8, dadurch gekennzeichnet, daß die Meßvorrichtung (11) einen Durchflußbereich (15) aufweist, durch den das Reinigungsmedium (5) zur Messung hindurchführbar ist.Surface cleaning device according to Claim 7 or 8, characterized in that the measuring device (11) has a flow-through region (15) through which the cleaning medium (5) can be guided for measurement. Oberflächenreinigungsvorrichtung nach Anspruch 9, dadurch gekennzeichnet, daß der Durchflußbereich (15) zumindest teilweise zwischen einer Lichtquelle (16) und einer Meßeinheit (17) der Meßvorrichtung (11) angeordnet ist.Surface cleaning device according to Claim 9, characterized in that the flow-through region (15) is arranged at least partially between a light source (16) and a measuring unit (17) of the measuring device (11). Oberflächenreinigungsvorrichtung nach Anspruch 10, dadurch gekennzeichnet, daß die Lichtquelle (16) eine Weißlichtquelle ist.Surface cleaning device according to claim 10, characterized in that the light source (16) is a white light source. Oberflächenreinigungsvorrichtung nach einem der Ansprüche 7 bis 11, dadurch gekennzeichnet, daß die Meßvorrichtung (11) einen Flächensensor (19) zur gleichzeitigen Aufnahme einer Vielzahl von Meßwerten aufweist.Surface cleaning device according to one of Claims 7 to 11, characterized in that the measuring device (11) has an area sensor (19) for the simultaneous recording of a multiplicity of measured values. Oberflächenreinigungsvorrichtung nach Anspruch 12, dadurch gekennzeichnet, daß der Flächensensor (19) als Sensor zur Aufnahme von einer großen Anzahl von Pixel ausgebildet ist.Surface cleaning device according to claim 12, characterized in that the surface sensor (19) is designed as a sensor for recording a large number of pixels. Oberflächenreinigungsvorrichtung nach einem der Ansprüche 10 bis 13, dadurch gekennzeichnet, daß die Meßvorrichtung (11) eine Kamera aufweist.Surface cleaning device according to one of claims 10 to 13, characterized in that the measuring device (11) comprises a camera. Oberflächenreinigungsvorrichtung nach einem der Ansprüche 7 bis 14, dadurch gekennzeichnet, daß die Auswertevorrichtung (13) mittels zumindest eines software- oder hardwaremäßig abgelegten Kalibrierwertes zur kontinuierlichen Berechnung der Verunreinigung des Reinigungsmediums (5) aus den Meßwerten ausgebildet ist.Surface cleaning device according to one of claims 7 to 14, characterized in that the evaluation device (13) by means of at least one software or hardware stored calibration value for the continuous calculation of the contamination of the cleaning medium (5) is formed from the measured values. Oberflächenreinigungsvorrichtung nach einem der Ansprüche 1 bis 15, dadurch gekennzeichnet, daß die Analysevorrichtung (10) zur Messung der Trübung des Reinigungsmediums (5) ausgebildet ist.Surface cleaning device according to one of claims 1 to 15, characterized in that the analysis device (10) for measuring the turbidity of the cleaning medium (5) is formed. Oberflächenreinigungsvorrichtung nach einem der Ansprüche 1 bis 16, dadurch gekennzeichnet, daß die Analysevorrichtung (10) zur Messung der Verunreinigung des Reinigungsmediums (5) mittels spektraler Analyse ausgebildet ist.Surface cleaning device according to one of claims 1 to 16, characterized in that the analysis device (10) for measuring the contamination of the cleaning medium (5) is formed by means of spectral analysis. Oberflächenreinigungsvorrichtung nach einem der Ansprüche 1 bis 17, dadurch gekennzeichnet, daß die Analysevorrichtung (10) zur Bildauswertung, zur Auswertung von Farben- und/oder Helligkeitsverteilungen ausgebildet ist.Surface cleaning device according to one of claims 1 to 17, characterized in that the analysis device (10) is designed for image evaluation, for the evaluation of color and / or brightness distributions. Oberflächenreinigungsvorrichtung nach einem der Ansprüche 1 bis 18, dadurch gekennzeichnet, daß eine Analysevorrichtung zur Auswertung von fluoreszierendem Reinigungsgut vorgesehen ist.Surface cleaning device according to one of claims 1 to 18, characterized in that an analysis device is provided for the evaluation of fluorescent items to be cleaned. Oberflächenreinigungsvorrichtung nach Anspruch 19, dadurch gekennzeichnet, daß eine Vorrichtung zur Beleuchtung von fluoreszierendem Reinigungsgut vorgesehen ist.Surface cleaning device according to claim 19, characterized in that a device for illuminating fluorescent cleaning material is provided.
EP06015733A 2005-10-13 2006-07-28 Surface washing device Active EP1775032B1 (en)

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DE102005049473A DE102005049473B4 (en) 2005-10-13 2005-10-13 Surface cleaning apparatus

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DE102015013457A1 (en) * 2015-10-16 2017-04-20 Eisenmann Se Plant for treating objects
DE102021104076B3 (en) 2021-02-22 2022-06-30 Mühlbauer Technology Gmbh Device for cleaning 3D printed objects

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WO1988001737A1 (en) 1986-09-01 1988-03-10 Benno Perren Device for continually measuring the turbidity of a liquid
DE19609783A1 (en) 1996-03-13 1997-09-18 Meissner Werner Low-pressure cleaning process and assembly
DE19745428A1 (en) 1996-10-22 1998-05-14 Honeywell Inc Domestic dishwasher with variable cleaning of articles being washed
DE10156924A1 (en) * 2001-11-21 2003-06-05 Bht Hygiene Technik Gmbh Checking and documentation of cleaning of objects, especially medical equipment or instruments, by comparing turbidity of water used prior to cleaning with that or rinse water after completion of cleaning cycle
US20040238005A1 (en) 2003-05-29 2004-12-02 Kazuhisa Takayama Method of judging end of cleaning treatment and device for the cleaning treatment

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EP1947442A3 (en) * 1997-05-05 2008-07-30 ChemoMetec A/S A method and a system for determination of biological particles in a liquid sample
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WO1988001737A1 (en) 1986-09-01 1988-03-10 Benno Perren Device for continually measuring the turbidity of a liquid
DE19609783A1 (en) 1996-03-13 1997-09-18 Meissner Werner Low-pressure cleaning process and assembly
DE19745428A1 (en) 1996-10-22 1998-05-14 Honeywell Inc Domestic dishwasher with variable cleaning of articles being washed
DE10156924A1 (en) * 2001-11-21 2003-06-05 Bht Hygiene Technik Gmbh Checking and documentation of cleaning of objects, especially medical equipment or instruments, by comparing turbidity of water used prior to cleaning with that or rinse water after completion of cleaning cycle
US20040238005A1 (en) 2003-05-29 2004-12-02 Kazuhisa Takayama Method of judging end of cleaning treatment and device for the cleaning treatment

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DE102005049473B4 (en) 2009-08-27
DE502006007367D1 (en) 2010-08-19
US20070084487A1 (en) 2007-04-19
DE102005049473A1 (en) 2007-04-19
ATE473058T1 (en) 2010-07-15

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