EP1003998B1 - Flake ice machine - Google Patents

Flake ice machine Download PDF

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Publication number
EP1003998B1
EP1003998B1 EP98948798A EP98948798A EP1003998B1 EP 1003998 B1 EP1003998 B1 EP 1003998B1 EP 98948798 A EP98948798 A EP 98948798A EP 98948798 A EP98948798 A EP 98948798A EP 1003998 B1 EP1003998 B1 EP 1003998B1
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EP
European Patent Office
Prior art keywords
evaporator
drum
flake ice
sensor
trough
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.)
Expired - Lifetime
Application number
EP98948798A
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German (de)
French (fr)
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EP1003998A1 (en
Inventor
Joachim Schill
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.)
Maja Maschinenfabrik Hermann Schill GmbH and Co KG
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Maja Maschinenfabrik Hermann Schill GmbH and Co KG
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Publication date
Application filed by Maja Maschinenfabrik Hermann Schill GmbH and Co KG filed Critical Maja Maschinenfabrik Hermann Schill GmbH and Co KG
Publication of EP1003998A1 publication Critical patent/EP1003998A1/en
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Publication of EP1003998B1 publication Critical patent/EP1003998B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25CPRODUCING, WORKING OR HANDLING ICE
    • F25C1/00Producing ice
    • F25C1/12Producing ice by freezing water on cooled surfaces, e.g. to form slabs
    • F25C1/14Producing ice by freezing water on cooled surfaces, e.g. to form slabs to form thin sheets which are removed by scraping or wedging, e.g. in the form of flakes
    • F25C1/142Producing ice by freezing water on cooled surfaces, e.g. to form slabs to form thin sheets which are removed by scraping or wedging, e.g. in the form of flakes from the outer walls of cooled bodies

Definitions

  • An evaporator roller 1 is in an evaporator pan 2 Flake ice machine rotatably mounted and is over a Not shown electric motor or a gear motor driven in rotation.
  • the lower part of the evaporator roller 1 dips into a water bath 3, so that the outer surface 4 of the Evaporator roller 1 is wetted with water when rotating.
  • the Water freezes on the one cooled by the chiller Shell surface 4 of the evaporator roller 1 firmly. This forms a thin layer of ice with the help of a fixed one Ice scraper 5 separated from the outer surface and not one shown collection container is supplied.
  • the drive for the evaporator roller 1 and the drive of the not shown Chiller are not shown in the drawing, it is is usually electric motor drives.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Production, Working, Storing, Or Distribution Of Ice (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
  • Confectionery (AREA)

Description

Stand der TechnikState of the art

Die Erfindung geht aus von einer Scherbeneismaschine nach der Gattung des Hauptanspruchs.The invention is based on a flake ice machine according to the Genus of the main claim.

Mit derartigen Scherbeneismaschinen wird verhältnismäßig dünnes Scherbeneis zur Frischhaltung von Nahrungsmitteln, insbesondere in der Fleischerbranche, erzeugt.With such flake ice machines becomes proportionate thin flake ice to keep food fresh, especially in the butcher industry.

Bei bekannten Scherbeneisautomaten der gattungsgemäßen Art (DE 41 08 911 A1, EP 535 498 A2) wird eine Verdampferwalze benetzt, indem sie einseitig in eine mit Wasser gefüllte Verdampferwanne taucht. Beim Drehen der Verdampferwalze gefriert die von der Mantelfläche der Verdampferwalze mitgenommene Wassermenge auf der Mantelfläche fest. Die dabei entstehende Eisschicht wird vor dem erneuten Eintauchen in das Wasser durch eine an der Walze vorgesehene Einrichtung von der Mantelfläche der Verdampferwalze abgelöst. Dies geschieht entweder durch Abschaben oder durch Abplatzen. Die Verdampferwalze enthält einen Kälteverdampfer, der mit einer außerhalb der Walze gelegenen Kältemaschine verbunden ist. Bei der Kältemaschine handelt es sich vorzugsweise um eine Kompressormaschine. In jedem Fall ist die Kältemaschine und der Antrieb der Verdampferwalze elektrisch angesteuert. Hierzu ist eine elektrische Steuereinrichtung vorgesehen. Um eine Beschädigung der Scherbeneismaschine bei Auftreten von Defekten beispielsweise des Antriebs der Verdampferwalze oder der Kältemaschine oder des Wasserzulaufs zu verhindern, werden von der Steuereinrichtung die Füllzeit, die Eisproduktion und der Wasserfüllstand in der Verdampferwanne überwacht. Bei Überoder Unterschreiten vorgegebener Grenzwerte der überwachten Größen werden der Antrieb der Verdampferwalze und der Antrieb der Kältemaschine abgeschaltet. Zur Überwachung sind bei der Steuereinrichtung mehrere Sensoren vorgesehen. Ein Sensor prüft die Dicke der auf der Mantelfläche vorhandenen Eisschicht und damit die Eisproduktion, ein Sensor erfaßt den Wasserfüllstand in der Verdampferwanne und ein Sensor dient der Überwachung der Füllzeit der Verdampferwanne. Jeder der Sensoren liefert eine Meßgröße, die von der Steuereinrichtung verarbeitet und mit den vorgegebenen Grenzwerten verglichen werden muß. Als nachteilig erweist sich bei diesen bekannten Scherbeneismaschinen, daß die Zahl der Sensoren und die entsprechende Steuereinrichtung die Herstellung einer Scherbeneismaschine aufwendig und teuer gestalten.In known flake ice machines of the generic type (DE 41 08 911 A1, EP 535 498 A2) becomes an evaporator roller wetted by one-sided in a filled with water Evaporator pan dips. When turning the evaporator roller freezes from the surface of the evaporator roller amount of water entrained on the outer surface. The the resulting ice layer is before the immersion again into the water by means provided on the roller detached from the outer surface of the evaporator roller. This happens either by scraping or chipping. The Evaporator roller contains a refrigeration evaporator that works with a Chiller located outside the roller is connected. The refrigeration machine is preferably a Compressor machine. In any case, the chiller and the drive of the evaporator roller is electrically controlled. For this an electrical control device is provided. To one Damage to the flake ice machine if Defects, for example, the drive of the evaporator roller or prevent the chiller or water supply become from the control device the filling time, the ice production and the Water level in the evaporator pan monitored. At Überoder Falling below specified limits of the monitored The sizes of the drive of the evaporator roller and the Chiller drive switched off. For monitoring are several sensors are provided in the control device. On Sensor checks the thickness of the existing surface Ice layer and thus the ice production, a sensor detects the Water level in the evaporator pan and a sensor is used monitoring the filling time of the evaporator pan. Everyone who Sensors provides a measured variable by the control device processed and compared with the specified limit values must become. A disadvantage of these known ones Flake ice machines that the number of sensors and the corresponding control device the manufacture of a Design flake ice cream machine complex and expensive.

Die erfindungsgemäße Scherbeneismaschine mit den kennzeichnenden Merkmalen des Hauptanspruchs hat demgegenüber den Vorteil, daß als Signalgeber für die Steuereinrichtung der Verdampferwalze bzw. Kältemaschine lediglich ein Sensor vorgesehen ist, welcher die Füllzeit der Verdampferwanne, die Eisproduktion und den Wasserfüllstand der Verdampferwanne überwacht. Die Meßgröße, auf die der Sensor anspricht, wird dabei so gewählt, daß sie durch die Füllzeit, durch die Dicke der Eisschicht auf der Verdampferwalze und durch den Wasserfüllstand in der Verdampferwanne beeinflußt wird. Die Steuereinrichtung prüft, ob die durch den Sensor ermittelten Meßwerte innerhalb vorgegebener Grenzen liegen und ob sich die Meßwerte ändern. Die Grenzwerte werden unter Berücksichtigung der für die Scherbeneismaschine unkritischen Werte von Füllzeit, Dicke der Eisschicht und Wasserfüllstand gewählt. Überschreitet der Meßwert die vorgegebenen Grenzwerte, so werden durch die Steuereinrichtung der Antrieb für die Kältemaschine und der Antrieb für die Verdampferwalze abgeschaltet, bevor es zu einer Schädigung der Scherbeneismaschine kommen kann.The flake ice machine according to the invention with the has characteristic features of the main claim in contrast, the advantage that as a signal generator for the Control device of the evaporator roller or chiller only one sensor is provided, which the filling time Evaporator pan, ice production and water level the evaporator pan monitors. The measured variable to which the Sensor responds, is chosen so that it by the Filling time, through the thickness of the ice layer on the evaporator roller and the water level in the evaporator pan being affected. The control device checks whether the Sensor determined measured values within specified limits and whether the measured values change. The limits will be taking into account that for the flake ice machine uncritical values of filling time, thickness of the ice layer and Water level selected. If the measured value exceeds the predefined limit values, the Control device of the drive for the chiller and the Drive for the evaporator roller is switched off before it becomes a Damage to the flake ice machine can occur.

Nach einer vorteilhaften Ausgestaltung der Erfindung ist die durch den Sensor erfaßte Meßgröße die Änderung des Wasserfüllstandes in der Verdampferwanne über der Zeit. Ändert sich der Wasserfüllstand innerhalb eines vorgegebenen Zeitintervalls von beispielsweise 60 Sekunden nicht oder ändert er sich stärker als ein vorgegebener Grenzwert, so wird nach Ablauf des Zeitintervalls der Antrieb für Verdampferwalze und Kältemaschine abgeschaltet. Wird beispielsweise die Wasserzufuhr unterbrochen, so kann kein Wasser nachfließen und der Wasserfüllstand sinkt innerhalb des vorgegebenen Zeitintervalls unter den vorgegebenen Grenzwert. Dies führt zum Abschalten der Scherbeneismaschine. Fällt einer der beiden Antriebe für die Verdampferwalze oder die Kältemaschine aus, so wird kein Eis produziert, was dazu führt, daß sich der Wasserfüllstand nicht ändert. Auch in diesem Fall schaltet die Scherbeneismaschine ab. Kommt es aufgrund zu niederer Zulauftemperatur zu einem Festfrieren der Verdampferwalze, so ändert sich der Wasserfüllstand innerhalb des Zeitintervalls nicht. Auch hier wird die Scherbeneismaschine nach Ablauf des Zeitintervalls abgeschaltet. Im ungünstigsten Fall gefriert die gesamte Flüssigkeitsmenge in der Verdampferwanne. In diesem Fall liefert der Sensor keine Meßwerte mehr, was ebenfalls zu einem Abschalten der Scherbeneismaschine nach Ablauf des vorgegebenen Zeitintervalls führt. Vorteilhafterweise beginnt die Überwachung der zeitlichen Änderung des Wasserfüllstandes mit einer zeitlichen Verzögerung gegenüber dem Beginn der Inbetriebnahme der Kältemaschine. Die zeitliche Verzögerung kann je nach Scherbeneismaschine unterschiedlich sein. Ein typischer Wert sind beispielsweise 120 Sekunden. Die Überwachung erfolgt flankengesteuert.According to an advantageous embodiment of the invention measured variable detected by the sensor the change in Water level in the evaporator pan over time. If the water level changes within a predetermined one Time interval of, for example, 60 seconds does not change or changes If it becomes stronger than a specified limit value, then Expiration of the time interval of the drive for the evaporator roller and Chiller switched off. For example, if Water supply is interrupted, so no water can flow in and the water level drops within the specified one Time interval below the specified limit. This leads to Switch off the flake ice machine. One of the two falls Drives for the evaporator roller or the chiller, so no ice is produced, which leads to the fact that the Water level does not change. In this case, too Flake ice machine off. It comes because of too low Inlet temperature to freeze the evaporator roller, see above the water level changes within the time interval Not. Here, too, the flake ice machine is removed after the Time interval switched off. In the worst case, the freezes total amount of liquid in the evaporator pan. In this In this case, the sensor no longer delivers measured values, which also increases a shutdown of the flake ice machine after the end of the predetermined time interval leads. Advantageously starts monitoring the temporal change in the water level with a time lag from the start of the Commissioning of the chiller. The time delay can vary depending on the flake ice machine. On a typical value is, for example, 120 seconds. The Monitoring is edge-controlled.

Nach einer weiteren vorteilhaften Ausgestaltung der Erfindung umfaßt der Sensor einen an der Verdampferwalze angeordneten Schwimmerschalter. Schwimmerschalter haben den Vorteil, daß sie von den chemischen und physikalischen Eigenschaften der verwendeten zu gefrierenden Flüssigkeit unabhängig sind. So ergeben sich beispielsweise auch keine Leitwertprobleme bei der Eisproduktion mit destilliertem Wasser. Außerdem haben Schwimmerschalter den Vorteil, daß sie bei einem Defekt ihrerseits, wie beispielsweise einem Kabelbruch, einem klebenden Kontakt oder einem nicht mehr schließenden Kontakt, keine Änderung des Wasserfüllstandes innerhalb des vorgegebenen Zeitintervalls registrieren und damit das Abschalten der Scherbeneismaschine herbeiführen.According to a further advantageous embodiment of the invention the sensor comprises one arranged on the evaporator roller Float switch. Float switches have the advantage that them from the chemical and physical properties of the liquid to be frozen are independent. So for example, there are no conductivity problems ice cream production with distilled water. Also have Float switch the advantage that they are in the event of a defect in turn, such as a broken cable, a sticky contact or a contact that no longer closes, no change in the water level within the predetermined time interval and thus the Switch off the flake ice machine.

Weitere Vorteile und vorteilhafte Ausgestaltungen der Erfindung sind der nachfolgenden Beschreibung sowie der Zeichnung entnehmbar.Further advantages and advantageous configurations of the Invention are the following description and the drawing removable.

Ein Ausführungsbeispiel des Gegenstandes der Erfindung ist in der Zeichnung dargestellt und wird im folgenden näher beschrieben. Es zeigt:

Fig. 1
eine erfindungsgemäße Scherbeneismaschine mit Schwimmerschalter.
An embodiment of the object of the invention is shown in the drawing and will be described in more detail below. It shows:
Fig. 1
a flake ice machine according to the invention with float switch.

Eine Verdampferwalze 1 ist in einer Verdampferwanne 2 einer Scherbeneismaschine drehbar gelagert und wird über einen nicht dargestellten Elektromotor bzw. einen Getriebemotor rotierend angetrieben. Der untere Teil der Verdampferwalze 1 taucht in ein Wasserbad 3, so daß die Mantelfläche 4 der Verdampferwalze 1 beim Rotieren mit Wasser benetzt wird. Das Wasser friert auf der durch die Kältemaschine abgekühlten Mantelfläche 4 der Verdampferwalze 1 fest. Hierbei bildet sich eine dünne Eisschicht, die mit Hilfe eines feststehenden Eisschabers 5 von der Mantelfläche abgetrennt und einem nicht dargestellten Sammelbehälter zugeführt wird. Der Antrieb für die Verdampferwalze 1 und der Antrieb der nicht dargestellten Kältemaschine sind in der Zeichnung nicht gezeigt, wobei es sich üblicherweise um elektromotorische Antriebe handelt. Ein Schwimmerschalter 6 ist seitlich an der Verdampferwanne 2 angeordnet und taucht in das Wasserbad 3 ein. Der Schwimmerschalter registriert die zeitliche Änderung des Wasserfüllstandes in der Verdampferwanne 2. Ändert sich der Wasserfüllstand nicht innerhalb eines Zeitintervalls oder ändert er sich stärker als ein vorgegebenener Grenzwert, so schaltet die mit dem Schwimmerschalter 6 zusammenwirkende, nicht dargestellte Steuereinrichtung den Antrieb für die Verdampferwalze und für die Kältemaschine ab. An evaporator roller 1 is in an evaporator pan 2 Flake ice machine rotatably mounted and is over a Not shown electric motor or a gear motor driven in rotation. The lower part of the evaporator roller 1 dips into a water bath 3, so that the outer surface 4 of the Evaporator roller 1 is wetted with water when rotating. The Water freezes on the one cooled by the chiller Shell surface 4 of the evaporator roller 1 firmly. This forms a thin layer of ice with the help of a fixed one Ice scraper 5 separated from the outer surface and not one shown collection container is supplied. The drive for the evaporator roller 1 and the drive of the not shown Chiller are not shown in the drawing, it is is usually electric motor drives. On Float switch 6 is on the side of the evaporator pan 2 arranged and immersed in the water bath 3. The Float switch registers the time change of the Water level in the evaporator pan 2. Changes the Water level does not change or change within a time interval If it turns out to be stronger than a predetermined limit value, the interacting with the float switch 6, not shown control device the drive for the Evaporator roller and for the chiller.

BezugszahlenlisteLIST OF REFERENCE NUMBERS

11
Verdampferwalzeevaporator drum
22
Verdampferwanneevaporating pan
33
Wasserbadwater bath
44
Mantelflächelateral surface
55
Eisschaberice scraper
66
Schwimmerschalterfloat switch

Claims (3)

  1. Flake ice machine
    with a cylindrical evaporator drum (1),
    with a gear mechanism or geared motor with electrical drive of the evaporator drum,
    with a likewise electrically driven refrigerating machine through which the evaporator drum (1) is led,
    with an evaporator trough (2) which can be filled with water and in which the evaporator drum (1) is arranged in a pivot mechanism so that the evaporator drum can be wet with water,
    with a device for separating (5) the flake ice from the lining (4) of the evaporator drum, and
    with an electrical control device for driving the evaporator drum and the refrigerating machine,
    characterised in that
    a sensor is provided as a signal transmitter for the control device of the evaporator drum and the refrigerating machine whose measured variable is influenced by the filling time of the evaporator trough, the thickness of the layer of ice on the evaporator drum and the water level of the evaporator trough, and
    the control device cuts off the drive of the refrigerating machine and the drive of the evaporator drum if there is no change in the measured values of the sensor or if the measured values of the sensor lie outside prescribed limits.
  2. Flake ice machine according to claim 1, characterised in that the measured variable captured by the sensor is the change in the water level in the evaporator trough (2) over time.
  3. Flake ice machine according to claims 1 or 2, characterised in that the sensor comprises a float switch (6) arranged at the evaporator trough (2).
EP98948798A 1997-08-15 1998-08-17 Flake ice machine Expired - Lifetime EP1003998B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19735598 1997-08-15
DE19735598A DE19735598A1 (en) 1997-08-15 1997-08-15 Ice splinters production machine, for keeping meat fresh
PCT/DE1998/002371 WO1999009361A1 (en) 1997-08-15 1998-08-17 Flake ice machine

Publications (2)

Publication Number Publication Date
EP1003998A1 EP1003998A1 (en) 2000-05-31
EP1003998B1 true EP1003998B1 (en) 2003-04-23

Family

ID=7839205

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98948798A Expired - Lifetime EP1003998B1 (en) 1997-08-15 1998-08-17 Flake ice machine

Country Status (5)

Country Link
US (1) US6233953B1 (en)
EP (1) EP1003998B1 (en)
DE (3) DE19735598A1 (en)
ES (1) ES2198074T3 (en)
WO (1) WO1999009361A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008029695B3 (en) * 2008-06-24 2009-06-18 Hartmut Higel Device for manufacturing flake ice from freezable liquid, particularly from water has container with liquid inlet, where seals are arranged between edge areas and lateral surface of freezing cylinder

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19913702B4 (en) * 1999-03-26 2004-11-11 Integral Energietechnik Gmbh Device for extracting ice crystals
DE10017723A1 (en) * 2000-04-11 2001-10-18 Schill Maja Masch Flake ice machine
US6557355B2 (en) * 2001-10-09 2003-05-06 Roman Niechcial Methods and apparatus for creating and using ice pellets
DE102006061158A1 (en) * 2006-12-22 2008-06-26 BSH Bosch und Siemens Hausgeräte GmbH Refrigerating appliance with ice maker
WO2010115407A2 (en) * 2009-04-09 2010-10-14 Maja-Maschinenfabrik Hermann Schill Gmbh & Co. Kg Apparatus for producing flake ice and method for cleaning, descaling and/or disinfecting an apparatus for producing flake ice
US10082415B1 (en) * 2016-03-25 2018-09-25 Jacob William Collison Floating evaporation pan with adjustable freeboard and surrounding wave-guard

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Publication number Priority date Publication date Assignee Title
US2308541A (en) * 1939-12-07 1943-01-19 Flakice Corp Refrigeration
US2749722A (en) * 1952-09-19 1956-06-12 Frank W Knowles Apparatus for making ice in small pieces
US4459824A (en) * 1982-08-26 1984-07-17 Reynolds Products Inc. Ice cube making apparatus
DK152153C (en) * 1985-07-10 1988-06-27 Sabroe & Co As SLEEPING MACHINE WITH A FREEZE DRUM AND TANGENTIAL, SLOWLY LOCKED SCRAP KNIFE
DE8912336U1 (en) * 1989-10-17 1990-01-11 Weber Eistechnik GmbH, 3565 Breidenbach Device for producing flake ice
DE9002856U1 (en) * 1990-03-10 1990-07-19 Wutke Kälte- und Klimatechnik GmbH, 7640 Kehl Automatic water pan emptying device for ice machines
DE4108911C2 (en) * 1991-03-19 1994-05-26 Schill Maja Masch Fine ice maker
EP0535498A3 (en) 1991-10-04 1993-11-10 Schill Maja Masch Automatic chipped ice maker
DE9307466U1 (en) * 1992-05-15 1993-08-12 Maja-Maschinenfabrik Hermann Schill Gmbh, 77694 Kehl Flake ice machine
US5257510A (en) * 1992-12-18 1993-11-02 Kraft General Foods, Inc. Scraper apparatus for freezer drums
US5477694A (en) * 1994-05-18 1995-12-26 Scotsman Group, Inc. Method for controlling an ice making machine and apparatus therefor
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US5913711A (en) * 1996-06-07 1999-06-22 Universal Ice Blast, Inc. Method for ice blasting

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008029695B3 (en) * 2008-06-24 2009-06-18 Hartmut Higel Device for manufacturing flake ice from freezable liquid, particularly from water has container with liquid inlet, where seals are arranged between edge areas and lateral surface of freezing cylinder

Also Published As

Publication number Publication date
WO1999009361A1 (en) 1999-02-25
DE19735598A1 (en) 1999-02-18
US6233953B1 (en) 2001-05-22
ES2198074T3 (en) 2004-01-16
EP1003998A1 (en) 2000-05-31
DE19881154D2 (en) 2000-07-06
DE59808081D1 (en) 2003-05-28

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