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EP0455057B1 - Dispensing and crushing device for small ice pieces - Google Patents

Dispensing and crushing device for small ice pieces Download PDF

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Publication number
EP0455057B1
EP0455057B1 EP91106205A EP91106205A EP0455057B1 EP 0455057 B1 EP0455057 B1 EP 0455057B1 EP 91106205 A EP91106205 A EP 91106205A EP 91106205 A EP91106205 A EP 91106205A EP 0455057 B1 EP0455057 B1 EP 0455057B1
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EP
European Patent Office
Prior art keywords
storage container
parts
ice
web
ice pieces
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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.)
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EP91106205A
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German (de)
French (fr)
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EP0455057A2 (en
EP0455057A3 (en
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Gaggenau Werke Haus und Lufttechnik GmbH
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Gaggenau Werke Haus und Lufttechnik GmbH
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    • 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
    • F25C5/00Working or handling ice
    • F25C5/20Distributing ice
    • F25C5/24Distributing ice for storing bins

Definitions

  • the invention relates to a dispensing and crushing device for small pieces of ice in connection with an ice-making device as an independent unit or in particular integrated in refrigerators or freezers, with a storage container determining a filling height of these small pieces of ice, into which an inclined screw conveyor engages, the pitch of which corresponds to the size of the goods to be transported Small ice cubes is adapted, the upwardly conveying screw, which is designed with open screw turns, partly lying in an adapted conveying trough of the storage container, and in which the screw conveyor conveys the small ice cubes into a comminution device arranged in the region of an output recess.
  • a dispenser for small pieces of ice in connection with a household refrigerator in which the small pieces of ice are dropped from an ice-making device and transported to the dispensing recess by an inclined screw conveyor formed with open screw turns.
  • the screw conveyor is located on the one hand in a storage container for the small pieces of ice and on the other hand with its screw turns completely below an ice piece detector which defines the maximum filling height of the storage container.
  • the storage container is provided in the area of the screw conveyor with a conveyor trough adapted to the screw conveyor.
  • a comminution device can optionally be attached to the discharge opening. In this case, in particular in those cases in which the storage container is filled up to the maximum filling level, the risk is relatively great that pieces of ice become jammed in the area of the dispensing opening.
  • a crushing device for ice cubes is described in British Patent 1,337,647.
  • This device consists of a motor-driven toothed web parts connected to a screw conveyor, which press the pieces of ice against fixed segment parts engaging in their spaces and thereby crush them.
  • the comminution device can be switched over in two positions of use, in one position the uncrushed pieces of ice are ejected, while in the other position of use the pieces of ice are caught by an additional engaging rake part in front of the segment parts, so that they are crushed by the toothed web parts entering between the segment parts will.
  • toothed web parts only serve to transport the pieces of ice during the crushing process and should not have any function in the free discharge of the uncrushed ice pieces, it can happen that the web parts unintentionally catch the ice pieces, press them against the segment parts and crush them.
  • the invention is based on the task of designing a dispensing and comminuting device for small pieces of ice so that the pieces of ice are optionally output one after the other and are only comminuted when the comminuting device is switched on. In addition, jamming of the ice cubes in the dispensing opening and continued dripping of melt water at the dispensing point should be avoided.
  • a conveyor section of the screw conveyor is located in the free space above the fill level of the storage container, that the feed trough of the storage container has at its upper end a separating section with a separating means located in the storage container before the end of the conveying path, which is designed in this way that it limits the promotion to the dispensing recess by dropping the superfluous pieces of small ice into the storage container to individually consecutive pieces of small ice, and that the size reduction device can be operated optionally.
  • the separating section preferably contains a squeegee, but it can also be expediently designed as a corresponding ejection recess in the storage container.
  • the required ejection recess corresponds essentially to the size of the pieces of ice to be dispensed. As a result, it is not necessary to collect the unnecessarily conveyed pieces of ice.
  • An additional advantage can possibly be achieved in that the conveyor section of the screw conveyor above the fill level of the storage container to the dispensing recess in a tubular, inclined Approach neck of the storage container is guided, which has a laterally open dispensing recess, wherein a water return channel to the storage container is formed in the connecting piece. Due to the lateral attachment of the dispensing recess, a gutter-shaped lower section remains in the connecting piece, which directs melt water back into the storage container and there into the water drain.
  • parts of the shredding device can advantageously be arranged. These parts fulfill a double function, which consists firstly in the operating position "dispensing uncrushed ice pieces", ejecting them from the dispensing recess and secondly in the operating position "crushing", pressing the ice pieces against indentable segment parts, in which case shredding into ice fragments occurs.
  • At least one web-like radially directed transport element can be provided at the upper end of the screw conveyor, which engages between insertable segment parts.
  • the web-like transport element is advantageously toothed on its transport side in a manner known per se.
  • segment parts which can be pushed in through the laterally open dispensing recess are pivotably mounted with a common holder in the housing part of the comminution device in such a way that in the operating position "comminution”, intervene between the web parts and in the operating position "delivery of uncrushed pieces of ice” can be withdrawn from the turning circle of the web parts and thus from the engagement in the spaces between the web parts.
  • the web parts also serve to eject the uncrushed pieces of ice without the need for an additional collecting element during the crushing.
  • the pivotable segment parts are expediently connected to a lifting magnet drive which, when the switch is actuated appropriately, engages them in the rotating circle between the web parts.
  • the engagement movement of the segment parts between the web parts can advantageously be limited by a stop fixed to the housing.
  • a combined dispensing and crushing device for small pieces of ice is created, in which the pieces of ice are conveyed individually to the discharge recess, the web-like transport elements optionally acting as feed elements for the discharge recess or for the segment parts. Dripping off the pieces of ice remaining in the tubular connecting piece when the screw conveyor is at a standstill only results in a water reflux into the storage container without additional melt water dripping at the dispensing point.
  • FIG. 1 shows a household refrigerator in which an ice maker, in particular for clear ice cubes, is installed.
  • the dispensing and comminuting device contains a storage container 1, which can be filled with pieces of ice up to a filling height h. Compliance with the filling level is ensured by known means not described in the drawing.
  • a device for monitoring the fill level of the collecting container is given, for example, in German Patent 17 76 189.
  • An upward-conveying open screw conveyor 2 is arranged obliquely in the reservoir 1, which partially lies in an adapted feed trough 3 of the reservoir 1.
  • the one dividing line between the conveyor trough 3 and the inner wall surface of the storage container 1 is designated by position 4.
  • a squeegee 5 is provided at the upper end of the conveyor trough 3. This consists of a rounded molded part with a rounded running surface 6.
  • the screw conveyor 2 is guided above the fill level h of the storage container 1 in a connecting piece 7 of the storage container 1. This has a laterally open discharge recess 8. At the upper end of the screw conveyor 2 is the comminution device, of which only two web-like transport elements 9, 10 can be seen in FIG. 1.
  • the storage container 1 there is a schematically indicated ice-making device 11, in which hollow small pieces of ice 13 are frozen on cooling fingers 12. After a predetermined wall thickness of the small pieces of ice 13 has been reached, they are released by heating the cooling fingers 12 while moving the trough 14 away and fall into the storage container 1.
  • An electric drive motor 15 is provided for driving the screw conveyor 2.
  • the direction of rotation of the screw conveyor 2 is viewed counterclockwise from the drive motor 15.
  • segment parts 17 which are provided with a common holder and can be pivoted about an axis 16, are provided with a smooth surface similar to part of a cylinder part, the cylinder radius corresponding to the turning radius r.
  • These segment parts 17 can be inserted between the transport elements 9, 10 (cf. FIG. 1) by means of a solenoid drive 18 through the lateral discharge recess 8 of the connecting piece 7.
  • the engagement of the segment parts 17 is limited by a stop 19.
  • the segment parts 17 are retracted from the rotating circle of the transport elements 9, 10 under the bias of a compression spring 20 when the solenoid drive 18 is de-energized and in the process no longer plunge into the connecting piece 7.
  • the transport elements 9, 10 serve to eject the ice pieces 13 conveyed upwards by the screw conveyor 2 and move them for ejection through the side discharge recess 8.
  • the lower part of the neck piece 7 that remains is formed a water return channel 21 through which water dripping from the ice pieces 13 is returned to the storage container.
  • Fig. 5 shows the operating position "shredding".
  • the toothed, web-like transport elements 9, 10 press the piece of ice 13 against the smooth surfaces of the segment parts 17 that are completely retracted into their interstices by the lateral discharge recess 8.
  • Each piece of ice 13 is crushed and its fragments 22 fall down through the laterally open discharge recess 8.
  • the segment parts 17 provided with a common holder are placed against the action of the helical compression spring against the stop 19 fixed to the housing by the lifting magnet drive 18.
  • the dispensing and crushing device for small pieces of ice explained above can either form an independent structural unit as an ice-making unit or be designed as a component of a refrigerator or freezer.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Disintegrating Or Milling (AREA)
  • Confectionery (AREA)
  • Food-Manufacturing Devices (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
  • Devices For Opening Bottles Or Cans (AREA)

Abstract

A container (1), which can be filled to a max. depth (h) with pieces of ice (13) formed on fingers (12) of an ice prepn. device (11) with a removable tray (14), has an inclined base contg. an Archimedean screw (2). - The pieces are conveyed upwards into a recess (8) in which a selectively operable communution device is constituted by two transfer bars (9,10) in a connection (7). The stationary lower part of this forms a return channel for water.

Description

Die Erfindung betrifft eine Ausgabe- und Zerkleinerungsvorrichtung für Kleineisstücke in Verbindung mit einer Eisbereitungsvorrichtung als selbständige Baueinheit oder insbesondere integriert in Kühl- oder Gefrierschränke, mit einem eine Füllhöhe dieser Kleineisstücke bestimmenden Vorratsbehälter, in den eine schrägliegende Förderschnecke eingreift, deren Ganghöhe der Größe der zu transportierenden Kleineisstücke angepaßt ist, wobei die mit offenen Schraubenwindungen ausgebildete, aufwärts fördernde Förderschnecke teilweise in einer angepaßten Fördermulde des Vorratsbehälters liegt, und bei der die Förderschnecke die Kleineisstücke in eine im Bereich einer Ausgabeausnehmung angeordnete Zerkleinerungsvorrichtung fördert.The invention relates to a dispensing and crushing device for small pieces of ice in connection with an ice-making device as an independent unit or in particular integrated in refrigerators or freezers, with a storage container determining a filling height of these small pieces of ice, into which an inclined screw conveyor engages, the pitch of which corresponds to the size of the goods to be transported Small ice cubes is adapted, the upwardly conveying screw, which is designed with open screw turns, partly lying in an adapted conveying trough of the storage container, and in which the screw conveyor conveys the small ice cubes into a comminution device arranged in the region of an output recess.

Aus der US-Patentschrift 3 902 331 ist eine Ausgabevorrichtung für Kleineisstücke in Verbindung mit einem Haushaltskühlschrank bekannt, bei der die Kleineisstücke aus einer Eisbereitungsvorrichtung abgeworfen und durch eine mit offenen Schraubenwindungen ausgebildete schrägliegende Förderschnecke zur Ausgabeausnehmung transportiert werden. Die Förderschnecke befindet sich dabei einerseits in einem Vorratsbehälter für die Kleineisstücke und andererseits mit ihren Schraubenwindungen vollständig unterhalb eines die maximale Füllhöhe des Vorratsbehälters definierenden Eisstücke-Detektors. Der Vorratsbehälter ist im Bereich der Förderschnecke mit einer an die Förderschnecke angepaßten Fördermulde versehen. An die Ausgabeöffnung kann gegebenenfalls eine Zerkleinerungsvorrichtung angefügt sein. Dabei ist insbesondere in den Fällen, in denen der Vorratsbehälter bis zur maximalen Füllhöhe aufgefüllt ist, die Gefahr relativ groß, daß sich Eisstücke im Bereich der Ausgabeöffnung verklemmen.From US Pat. No. 3,902,331, a dispenser for small pieces of ice in connection with a household refrigerator is known, in which the small pieces of ice are dropped from an ice-making device and transported to the dispensing recess by an inclined screw conveyor formed with open screw turns. The screw conveyor is located on the one hand in a storage container for the small pieces of ice and on the other hand with its screw turns completely below an ice piece detector which defines the maximum filling height of the storage container. The storage container is provided in the area of the screw conveyor with a conveyor trough adapted to the screw conveyor. A comminution device can optionally be attached to the discharge opening. In this case, in particular in those cases in which the storage container is filled up to the maximum filling level, the risk is relatively great that pieces of ice become jammed in the area of the dispensing opening.

Eine Zerkleinerungsvorrichtung für Eisstücke ist in der britischen Patentschrift 1 337 647 beschrieben. Diese Vorrichtung besteht aus mit einer Förderschnecke verbundenen, motorisch angetriebenen gezahnten Stegteilen, welche die Eisstücke gegen feststehende in ihre Zwischenräume eingreifende Segmentteile anpressen und dabei zerkleinern. Die Zerkleinerungsvorrichtung ist in zwei Benutzungsstellungen umschaltbar, wobei in der einen Stellung ein Auswurf der unzerkleinerten Eisstücke erfolgt, während in der anderen Benutzungsstellung die Eisstücke durch ein zusätzliches einrückbares Rechenteil vor den Segmentteilen aufgefangen werden, so daß diese von den zwischen die Segmentteile einlaufenden gezahnten Stegteilen zerkleinert werden. Obwohl in dieser Ausbildung die gezahnten Stegteile nur zum Transport der Eisstücke beim Zerkleinerungsvorgang dienen und beim freien Abwurf der unzerkleinerten Eisstücke keine Funktion ausüben sollen, kann es vorkommen, daß die Stegteile die Eisstücke ungewollt auffangen, gegen die Segmentteile anpressen und zerkleinern.A crushing device for ice cubes is described in British Patent 1,337,647. This device consists of a motor-driven toothed web parts connected to a screw conveyor, which press the pieces of ice against fixed segment parts engaging in their spaces and thereby crush them. The comminution device can be switched over in two positions of use, in one position the uncrushed pieces of ice are ejected, while in the other position of use the pieces of ice are caught by an additional engaging rake part in front of the segment parts, so that they are crushed by the toothed web parts entering between the segment parts will. Although in this design the toothed web parts only serve to transport the pieces of ice during the crushing process and should not have any function in the free discharge of the uncrushed ice pieces, it can happen that the web parts unintentionally catch the ice pieces, press them against the segment parts and crush them.

Der Transport von Kleineisstücken mit offenen und geschlossenen Förderschnecken aus einem Vorratsbehälter ist unter anderm in der deutschen Offenlegungsschrift 24 24 252 und in den US-Patentschriften 3 341 065 sowie 3 918 266 beschrieben.The transport of small pieces with open and closed screw conveyors from a storage container is described, inter alia, in German Offenlegungsschrift 24 24 252 and in US Pat. Nos. 3,341,065 and 3,918,266.

Die Erfindung geht von der Aufgabenstellung aus, eine Ausgabe- und Zerkleinerungsvorrichtung für Kleineisstücke so auszubilden, daß die Eisstücke wahlweise einzeln nacheinanderfolgend ausgegeben und nur bei Einschaltung der Zerkleinerungsvorrichtung zerkleinert werden. Außerdem soll ein Verklemmen der Eisstücke in der Ausgabeöffnung und ein fortgesetztes Abtropfen von Schmelzwasser an der Ausgabestelle vermieden werden.The invention is based on the task of designing a dispensing and comminuting device for small pieces of ice so that the pieces of ice are optionally output one after the other and are only comminuted when the comminuting device is switched on. In addition, jamming of the ice cubes in the dispensing opening and continued dripping of melt water at the dispensing point should be avoided.

Die Lösung dieser Aufgabenstellung erfolgt dadurch, daß ein Förderabschnitt der Förderschnecke im freien Raum oberhalb der Füllhöhe des Vorratsbehälters liegt, daß die Fördermulde des Vorratsbehälters an ihrem oberen Ende einen Vereinzelungsabschnitt mit einem vor dem Ende des Förderweges im Vorratsbehälter befindlichen Vereinzelungsmittel aufweist, das derart ausgebildet ist, daß es die Förderung zur Ausgabeausnehmung durch Abwurf der überflüssigen Kleineisstücke in den Vorratsbehälter auf jeweils einzeln hintereinanderfolgende Kleineisstücke beschränkt, und daß die Zerkleinerungsvorrichtung wahlweise betätigbar ist. Der Vereinzelungsabschnitt enthält bevorzugt eine Abstreifleiste, er kann aber auch zweckmäßig als entsprechende Abwurfvertiefung im Vorratsbehälter ausgebildet sein.This task is solved in that a conveyor section of the screw conveyor is located in the free space above the fill level of the storage container, that the feed trough of the storage container has at its upper end a separating section with a separating means located in the storage container before the end of the conveying path, which is designed in this way that it limits the promotion to the dispensing recess by dropping the superfluous pieces of small ice into the storage container to individually consecutive pieces of small ice, and that the size reduction device can be operated optionally. The separating section preferably contains a squeegee, but it can also be expediently designed as a corresponding ejection recess in the storage container.

Durch die Aufwärtsförderung der als Eiswürfel oder Eishohlkörper geformten Kleineisstücke mit Hilfe der aufwärtsfördernden Förderschnecke, die vor dem Ende des Förderweges im Vorratsbehälter überflüssige Kleineisstücke an der als Vereinzelungsmittel dienenden Abstreifleiste abwirft und damit in den Vorratsbehälter zurückbefördert, wird eine Einzelzuführung zur Ausgabeausnehmung ermöglicht. Die erforderliche Auswurfausnehmung entspricht im wesentlichen der Größe der auszugebenden Eisstücke. Dadurch ist es nicht erforderlich, die überflüssig geförderten Eisstücke aufzufangen.Through the upward conveyance of the small ice cubes shaped as ice cubes or hollow ice bodies with the help of the upward conveying screw which, before the end of the conveying path, sheds unnecessary small ice cubes in the storage container on the squeegee serving as a separating agent and thus feeds them back into the storage container, an individual feed for the dispensing recess is made possible. The required ejection recess corresponds essentially to the size of the pieces of ice to be dispensed. As a result, it is not necessary to collect the unnecessarily conveyed pieces of ice.

Durch die Schräglage der Förderschnecke und eine an die Größe der zu fördernden Eisstücke angepaßte Ganghöhe in Verbindung mit der Höhe der Abstreifleiste wirkt beim Fördervorgang auf die Eisstücke eine Kraft derart, daß diese immer auf eine Seite der Förderschnecke nach oben wandern. Legt sich ein weiteres Eisstück zu dem bereits Vorhandenen in einen Schneckengang, so wird dieses von der Abstreifleiste nach oben abgelenkt und fällt in den Vorratsbehälter zurück. Dies ist dadurch möglich, daß die Abstreifleiste oder in der alternativen Ausbildung die Abwurfvertiefung bei Schräglage der Schnecke höher liegt als die Füllhöhe der Kleineisstücke im Förderbehälter. Es erscheint somit zweckmäßig, die Abstreifleiste oder die Abwurfvertiefung seitlich der Förderschnecke an der Trennlinie zwischen der Fördermulde und der Innenwandfläche des Vorratsbehälters oberhalb der Füllhöhe anzubringen. Die Oberfläche der Abstreifleiste ist zweckmäßig abgerundet, so daß die Eisstücke an ihr entlang bzw. über sie hinweg gleiten können.Due to the inclined position of the screw conveyor and a pitch adapted to the size of the pieces of ice to be conveyed in conjunction with the height of the scraper strip, a force acts on the ice pieces during the conveying process in such a way that they always migrate upwards to one side of the screw conveyor. If another piece of ice is placed in a worm gear in addition to what is already there, it is deflected upwards by the squeegee and falls back into the storage container. This is possible because the squeegee or, in the alternative embodiment, the discharge recess when the screw is inclined is higher than the filling height of the small pieces of ice in the delivery container. It therefore appears expedient to attach the squeegee or the discharge recess to the side of the screw conveyor on the dividing line between the feed trough and the inner wall surface of the storage container above the fill level. The surface of the squeegee is appropriately rounded, so that the ice cubes can slide along or over it.

In weiterer Ausgestaltung der Erfindung kann es zweckmäßig sein, die Ganghöhe der Förderschnecke konstant auszubilden.In a further embodiment of the invention, it can be expedient to keep the pitch of the screw conveyor constant.

Ein zusätzlicher Vorteil läßt sich gegebenenfalls dadurch erzielen, daß der Förderabschnitt der Förderschnecke oberhalb der Füllhöhe des Vorratsbehälters zu der Ausgabeausnehmung in einem rohrförmigen, schrägliegenden Ansatzstutzen des Vorratsbehälters geführt ist, welcher eine seitlich offene Ausgabeausnehmung aufweist, wobei in dem Ansatzstutzen ein Wasserrücklaufkanal zum Vorratsbehälter gebildet ist. Durch die seitliche Anbringung der Ausgabeausnehmung verbleibt in dem Ansatzstutzen ein rinnenförmiges unteres Teilstück, welches Schmelzwasser in den Vorratsbehälter und dort in den Wasserabfluß zurückleitet.An additional advantage can possibly be achieved in that the conveyor section of the screw conveyor above the fill level of the storage container to the dispensing recess in a tubular, inclined Approach neck of the storage container is guided, which has a laterally open dispensing recess, wherein a water return channel to the storage container is formed in the connecting piece. Due to the lateral attachment of the dispensing recess, a gutter-shaped lower section remains in the connecting piece, which directs melt water back into the storage container and there into the water drain.

Am oberen Ende der Förderschnecke können vorteilhaft Teile der Zerkleinerungsvorrichtung angeordnet sein. Diese Teile erfüllen eine Doppelfunktion, die erstens darin besteht, in der Betriebsstellung "Ausgabe von unzerkleinerten Eisstücken", diese aus der Ausgabeausnehmung auszuwerfen und zweitens in der Betriebsstellung "Zerkleinern", die Eisstücke gegen einrückbare Segmentteile anzupressen, wobei dann eine Zerkleinerung in Eisbruchstücke eintritt.At the upper end of the screw conveyor, parts of the shredding device can advantageously be arranged. These parts fulfill a double function, which consists firstly in the operating position "dispensing uncrushed ice pieces", ejecting them from the dispensing recess and secondly in the operating position "crushing", pressing the ice pieces against indentable segment parts, in which case shredding into ice fragments occurs.

Dabei kann am oberen Ende der Förderschnecke mindestens ein stegartiges radialgerichtetes Transportelement vorgesehen sein, welches zwischen einrückbare Segmentteile eingreift. Das stegartige Transportelement ist auf seiner Transportseite vorteilhaft in an sich bekannter Weise gezahnt.In this case, at least one web-like radially directed transport element can be provided at the upper end of the screw conveyor, which engages between insertable segment parts. The web-like transport element is advantageously toothed on its transport side in a manner known per se.

Eine zweckmäßige Weiterbildung kann vorsehen, daß die durch die seitlich offene Ausgabeausnehmung einrückbaren Segmentteile mit einer gemeinsamen Halterung im Gehäuseteil der Zerkleinerungsvorrichtung derart schwenkbar gelagert sind, daß sie in der Betriebsstellung "Zerkleinern", zwischen die Stegteile eingreifen und in der Betriebsstellung "Ausgabe von unzerkleinerten Eisstücken" aus dem Drehkreis der Stegteile und damit aus dem Eingriff in die Zwischenräume zwischen den Stegteilen zurückziehbar sind. Die Stegteile dienen dabei auch zum Auswerfen der unzerkleinerten Eisstücke, ohne daß bei der Zerkleinerung ein zusätzliches Auffangelement benötigt wird.An expedient development can provide that the segment parts which can be pushed in through the laterally open dispensing recess are pivotably mounted with a common holder in the housing part of the comminution device in such a way that in the operating position "comminution", intervene between the web parts and in the operating position "delivery of uncrushed pieces of ice" can be withdrawn from the turning circle of the web parts and thus from the engagement in the spaces between the web parts. The web parts also serve to eject the uncrushed pieces of ice without the need for an additional collecting element during the crushing.

Die schwenkbaren Segmentteile werden zweckmäßig mit einem Hubmagnetantrieb verbunden, welcher diese bei entsprechender Schalterbetätigung in den Drehkreis zwischen die Stegteile einrückt. Dabei kann die Eingriffsbewegung der Segmentteile zwischen die Stegteile vorteilhaft durch einen gehäusefesten Anschlag begrenzt werden. Außerdem erscheint es zweckmäßig, die Segmentteile an der Zerkleinerungsfläche mit glatter zylinderteilflächenartigen Oberfläche auszubilden und aus dem Drehkreis der mit der Förderschnecke verbundenen Stegteile zurückziehbar -zweckmäßig bis diese nicht mehr in den Ansatzstutzen eintauchen- zu gestalten.The pivotable segment parts are expediently connected to a lifting magnet drive which, when the switch is actuated appropriately, engages them in the rotating circle between the web parts. The engagement movement of the segment parts between the web parts can advantageously be limited by a stop fixed to the housing. In addition, it appears to be expedient to form the segment parts on the comminution surface with a smooth surface similar to the surface of a cylinder part and to make them retractable from the rotating circle of the web parts connected to the screw conveyor — expediently until they no longer plunge into the connecting piece.

Durch die Anwendung der Merkmale der Erfindung wird eine kombinierte Ausgabe- und Zerkleinerungsvorrichtung für Kleineisstücke geschaffen, bei der die Eisstücke einzeln zur Ausgabeausnehmung gefördert werden, wobei die stegartigen Transportelemente wahlweise als Zuförderelemente zur Auswurfausnehmung oder zu den Segmentteilen wirksam werden. Ein Abtropfen der im rohrförmigen Ansatzstutzen liegenbleibenden Eisstücke bei Stillstand der Förderschnecke ergibt lediglich einen Wasserrückfluß in den Vorratsbehälter, ohne daß an der Ausgabestelle zusätzliches Schmelzwasser abtropft.By applying the features of the invention, a combined dispensing and crushing device for small pieces of ice is created, in which the pieces of ice are conveyed individually to the discharge recess, the web-like transport elements optionally acting as feed elements for the discharge recess or for the segment parts. Dripping off the pieces of ice remaining in the tubular connecting piece when the screw conveyor is at a standstill only results in a water reflux into the storage container without additional melt water dripping at the dispensing point.

Die Erfindung wird nachfolgend anhand der Zeichnung näher erläutert. Hieraus ergeben sich weitere Erfindungsvorteile; es zeigen:

Fig. 1
eine teilweise geschnittene Seitenansicht der Ausgabe- und Zerkleinerungsvorrichtung beim Einbau in einen Haushaltskühlschrank,
Fig. 2
eine Ausschnittsdraufsicht auf die Förderschnecke innerhalb des Vorratsbehälters,
Fig. 3
eine Darstellung des Abstreifens eines überflüssigen Eisstücks aus dem Schraubengang der Förderschnecke.
Fig. 4
eine Ausschnittsvorderansicht der Zerkleinerungsvorrichtung in der Betriebsstellung "Ausgabe von unzerkleinerten Eisstücken",
Fig. 5
eine Ausschnittsvorderansicht nach Fig.4 in der Betriebsstellung "Zerkleinern".
The invention is explained below with reference to the drawing. This results in further advantages of the invention; show it:
Fig. 1
a partially sectioned side view of the output and crushing device when installed in a household refrigerator,
Fig. 2
a sectional plan view of the screw conveyor within the storage container,
Fig. 3
a representation of the stripping of a superfluous piece of ice from the screw thread of the screw conveyor.
Fig. 4
2 shows a cutout front view of the comminution device in the operating position "delivery of uncrushed pieces of ice",
Fig. 5
a detail front view of Figure 4 in the "shredding" operating position.

In der Schnittdarstellung nach Fig. 1 erkennt man einen Haushaltskühlschrank, in den ein Eisbereiter, insbesondere für Klareiswürfel, eingebaut ist.1 shows a household refrigerator in which an ice maker, in particular for clear ice cubes, is installed.

Die Ausgabe- und Zerkleinerungsvorrichtung enthält einen Vorratsbehälter 1, welcher bis zu einer Füllhöhe h mit Eisstücken gefüllt werden kann. Das Einhalten der Füllhöhe wird durch bekannte in der Zeichnung nicht beschriebene Mittel gewährleistet. Eine solche Vorrichtung zur Überwachung der Füllhöhe des Sammelbehälters ist z.B. in der deutschen Patentschrift 17 76 189 angegeben.The dispensing and comminuting device contains a storage container 1, which can be filled with pieces of ice up to a filling height h. Compliance with the filling level is ensured by known means not described in the drawing. Such a device for monitoring the fill level of the collecting container is given, for example, in German Patent 17 76 189.

In dem Vorratsbehälter 1 ist eine aufwärtsfördernde offene Förderschnecke 2 schrägliegend angeordnet, welche teilweise in einer angepaßten Fördermulde 3 des Vorratsbehälters 1 liegt. Die eine Trennlinie zwischen der Fördermulde 3 und der Innenwandfläche des Vorratsbehälters 1 ist mit Position 4 bezeichnet. Auf der der Trennlinie 4 gegenüberliegenden in der Schnittdarstellung nicht erkennbaren weiteren Trennlinie ist am oberen Ende der Fördermulde 3 eine Abstreifleiste 5 vorgesehen. Diese besteht aus einem abgerundeten Formteil mit gleichfalls abgerundeter Auflauffläche 6.An upward-conveying open screw conveyor 2 is arranged obliquely in the reservoir 1, which partially lies in an adapted feed trough 3 of the reservoir 1. The one dividing line between the conveyor trough 3 and the inner wall surface of the storage container 1 is designated by position 4. On the other separating line opposite the separating line 4, which cannot be seen in the sectional view, a squeegee 5 is provided at the upper end of the conveyor trough 3. This consists of a rounded molded part with a rounded running surface 6.

Die Förderschnecke 2 ist oberhalb der Füllhöhe h des Vorratsbehälters 1 in einem Ansatzstutzen 7 des Vorratsbehälters 1 geführt. Dieser weist eine seitlich offene Ausgabeausnehmung 8 auf. Am oberen Ende der Förderschnecke 2 befindet sich die Zerkleinerungsvorrichtung von der in Fig. 1 nur zwei stegartige Transportelemente 9,10 erkennbar sind.The screw conveyor 2 is guided above the fill level h of the storage container 1 in a connecting piece 7 of the storage container 1. This has a laterally open discharge recess 8. At the upper end of the screw conveyor 2 is the comminution device, of which only two web-like transport elements 9, 10 can be seen in FIG. 1.

Oberhalb des Vorratsbehälters 1 befindet sich eine schematisch angedeutete Eisbereitungsvorrichtung 11, in der auf Kühlfingern 12 hohle Kleineisstücke 13 aufgefroren werden. Nach Erreichen einer vorgegebenen Wandstärke der Kleineisstücke 13 werden diese durch Beheizen der Kühlfinger 12 unter Wegfahren der Wanne 14 gelöst und fallen in den Vorratsbehälter 1.Above the storage container 1 there is a schematically indicated ice-making device 11, in which hollow small pieces of ice 13 are frozen on cooling fingers 12. After a predetermined wall thickness of the small pieces of ice 13 has been reached, they are released by heating the cooling fingers 12 while moving the trough 14 away and fall into the storage container 1.

Zum Antrieb der Förderschnecke 2 ist ein elektrischer Antriebsmotor 15 vorgesehen. Die Drehrichtung der Förderschnecke 2 ist vom Antriebsmotor 15 her betrachtet im Gegenuhrzeigersinn.An electric drive motor 15 is provided for driving the screw conveyor 2. The direction of rotation of the screw conveyor 2 is viewed counterclockwise from the drive motor 15.

Fig. 2 und 3 zeigen einen Ausschnitt der Förderschnecke 2 bei der Transportbewegung der Kleineisstücke. Diese Kleineisstücke 13 werden auf der rechten Seite zwischen den offenen Schraubengängen der Förderschnecke 2 einzeln aufwärts transportiert, wobei überflüssige Kleineisstücke gegen die Vorderkante 6 der Abstreifleiste 5 anlaufen und in den Vorratsbehälter 1 zurückfallen.2 and 3 show a section of the screw conveyor 2 during the transport movement of the small pieces of ice. These small pieces of ice 13 are individually transported upwards on the right-hand side between the open screw flights of the screw conveyor 2, superfluous small pieces of ice running against the front edge 6 of the scraper strip 5 and falling back into the storage container 1.

In den Fig. 4 und 5 wird die Wirkungsweise der Zerkleinerungsvorrichtung näher erläutert. Dabei sind drei mit einer gemeinsamen Halterung versehene, um eine Achse 16 schwenkbare Segmentteile 17 mit glatter zylinderteilflächenartiger Oberfläche vorgesehen, wobei der Zylinderradius dem Drehradius r entspricht. Diese Segmentteile 17 können durch einen Hubmagnetantrieb 18 durch die seitliche Ausgabeausnehmung 8 des Ansatzstutzens 7 zwischen die Transportelemente 9,10 (vgl. Fig. 1) eingerückt werden. Das Einrücken der Segmentteile 17 wird durch einen Anschlag 19 begrenzt. Die Segmentteile 17 werden unter Vorspannung einer Druckfeder 20 bei stromlosen Hubmagnetantrieb 18 aus dem Drehkreis der Transportelemente 9,10 zurückgezogen und tauchen dabei nicht mehr in den Ansatzstutzen 7 ein.4 and 5, the operation of the shredding device is explained in more detail. In this case, three segment parts 17, which are provided with a common holder and can be pivoted about an axis 16, are provided with a smooth surface similar to part of a cylinder part, the cylinder radius corresponding to the turning radius r. These segment parts 17 can be inserted between the transport elements 9, 10 (cf. FIG. 1) by means of a solenoid drive 18 through the lateral discharge recess 8 of the connecting piece 7. The engagement of the segment parts 17 is limited by a stop 19. The segment parts 17 are retracted from the rotating circle of the transport elements 9, 10 under the bias of a compression spring 20 when the solenoid drive 18 is de-energized and in the process no longer plunge into the connecting piece 7.

In der in Fig. 4 gezeigten Betriebsstellung "Ausgabe von unzerkleinerten Eisstücken" dienen die Transportelemente 9,10 zum Auswurf der von der Förderschnecke 2 aufwärts geförderten Eisstücke 13 und bewegen diese zum Abwurf durch die seitliche Ausgabeausnehmung 8. Der stehengebliebene untere Teil des Ansatzstutzens 7 bildet einen Wasserrücklaufkanal 21, durch den von den Eisstücken 13 abtropfendes Wasser in den Vorratsbehälter zurückgeleitet wird.4, the transport elements 9, 10 serve to eject the ice pieces 13 conveyed upwards by the screw conveyor 2 and move them for ejection through the side discharge recess 8. The lower part of the neck piece 7 that remains is formed a water return channel 21 through which water dripping from the ice pieces 13 is returned to the storage container.

Fig. 5 zeigt die Betriebsstellung "Zerkleinern". Hierbei pressen die gezahnten stegartigen Transportelemente 9,10 das Eisstück 13 gegen die glatten Oberflächen der in ihre Zwischenräume durch die seitliche Ausgabeausnehmung 8 vollständig eingefahrenen Segmentteile 17. Dabei wird jeweils ein Eisstück 13 zerkleinert und seine Bruchstücke 22 fallen durch die seitlich offene Ausgabeausnehmung 8 herab. In dieser Betriebsstellung sind die mit einer gemeinsamen Halterung versehenen Segmentteile 17 durch den Hubmagnetantrieb 18 gegen die Wirkung der Schraubendruckfeder an den gehäusefesten Anschlag 19 angelegt.Fig. 5 shows the operating position "shredding". Here, the toothed, web-like transport elements 9, 10 press the piece of ice 13 against the smooth surfaces of the segment parts 17 that are completely retracted into their interstices by the lateral discharge recess 8. Each piece of ice 13 is crushed and its fragments 22 fall down through the laterally open discharge recess 8. In this operating position, the segment parts 17 provided with a common holder are placed against the action of the helical compression spring against the stop 19 fixed to the housing by the lifting magnet drive 18.

Die nicht näher erläuterten Einzelteile, insbesondere das Kälteaggregat und die zugehörigen Bauteile,entsprechen vorbekannten Ausbildungsformen aus dem Stande der Technik.The individual parts, not explained in detail, in particular the refrigeration unit and the associated components, correspond to previously known forms of training from the prior art.

Die oben erläuterte Ausgabe- und Zerkleinerungsvorrichtung für Kleineisstücke kann entweder als Eisbereitungseinheit eine selbständige Baueinheit bilden oder als Bauteil eines Kühl- oder Gefrierschrankes ausgebildet sein.The dispensing and crushing device for small pieces of ice explained above can either form an independent structural unit as an ice-making unit or be designed as a component of a refrigerator or freezer.

Claims (17)

  1. Dispensing and crushing device for small ice pieces in conjunction with an ice-making device (11) in the form of an independent structural unit or, in particular, integrated into refrigerators or freezers, having a storage container (1) which determines a filling height (h) of said small ice pieces (13) and into which engages an oblique conveyor worm (2), whose pitch is adapted to the size of the small ice pieces (13) to be transported, with the upward conveying conveyor worm (2) constructed with open screw turns lying partially in an adapted conveyor trough (3) of the storage container (1), and wherein the conveyor worm (2) feeds the small ice pieces (13) into a crushing device disposed in the region of a dispensing recess (8),
    characterized in that a conveying section of the conveyor worm (2) lies in the free space above the filling height (h) of the storage container (1), that the conveyor trough (3) of the storage container (1) has at its top end a separating section with a separating means (5) which is situated before the end of the conveying path in the storage container and is so constructed that, by shedding the surplus small ice pieces (13) into the storage container (1), it restricts the supply to the dispensing recess (8) to a succession of single small ice pieces (13), and that the crushing device is selectively operable.
  2. Device according to claim 1, characterized in that the separating means takes the form of a scraping strip (5).
  3. Device according to claim 1, characterized in that the separating means takes the form of a discarding cavity.
  4. Device according to claim 2, characterized in that the scraping strip (5) is situated laterally of the conveyor worm at the junction between the conveyor trough (3) and the inner wall surface of the storage container (1) above the filling height (h).
  5. Device according to claim 1, characterized in that the pitch of the conveyor worm (2) is constant.
  6. Device according to claim 1, characterized in that the conveying section of the conveyor worm (2) above the filling height (h) of the storage container (1) is conveyed to the dispensing recess (8) in a tubular, oblique extension piece (7) of the storage container (1) which has the dispensing recess (8), said dispensing recess (8) being laterally open and a water return channel (21) to the storage container (1) being formed in the extension piece (7).
  7. Device according to claim 1, characterized in that parts (9, 10) of the crushing device are disposed at the top end of the conveyor worm (2).
  8. Device according to claim 7, characterized in that provided at the top end of the conveyor worm (2) is at least one web-like, radially directed transport element (9, 10), which engages between engageable segment parts (17).
  9. Device according to claim 8, characterized in that the web-like transport element (9, 10) is toothed at its transport side.
  10. Device according to claim 8, characterized in that two web-like transport elements (9, 10) engage into the spaces between three engageable segment parts (17).
  11. Device according to claims 6 and 10, characterized in that the segment parts (17) which are engageable through the laterally open dispensing recess (8) are pivotally supported by a common holding device in the housing part of the crushing device in such a way that, in the "crush" operating position, they engage between the web parts (9, 10) and, in the "dispense uncrushed ice pieces" operating position, they are retractable out of the turning circle of the web parts (9, 10) and hence out of engagement into the spaces between the web parts (9, 10).
  12. Device according to claim 11, characterized in that the swivelling segment parts (17) are engageable by means of a solenoid drive (18) into the turning circle between the segment parts (9, 10) of the conveyor worm (2).
  13. Device according to claim 12, characterized in that the movement of engagement of the segment parts (17) between the web parts is limited by a stop (19) provided on the housing part.
  14. Device according to claim 12, characterized in that the segment parts (17) are retractable under spring bias (20) out of the turning circle of the web parts (9, 10) connected to the conveyor worm (2).
  15. Device according to claim 8, characterized in that the segment parts (17) at the crushing area are constructed with a smooth surface.
  16. Device according to claim 15, characterized in that the smooth surface is a portion of a cylinder surface, whose radius of curvature corresponds to the radius of rotation (r) of the segment parts (17).
  17. Device according to claims 6 and 15, characterized in that the segment parts (17), in the "dispense uncrushed ice pieces" operating position, may be swivelled so far outwards that they no longer engage into the extension piece (7).
EP91106205A 1990-04-30 1991-04-18 Dispensing and crushing device for small ice pieces Expired - Lifetime EP0455057B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4013825A DE4013825A1 (en) 1990-04-30 1990-04-30 Refrigerator component for breaking-up small ice pieces - includes sloping conveyor of single pieces from container into recess contg. comminution bars and drip channel
DE4013825 1990-04-30

Publications (3)

Publication Number Publication Date
EP0455057A2 EP0455057A2 (en) 1991-11-06
EP0455057A3 EP0455057A3 (en) 1992-05-06
EP0455057B1 true EP0455057B1 (en) 1994-07-20

Family

ID=6405418

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91106205A Expired - Lifetime EP0455057B1 (en) 1990-04-30 1991-04-18 Dispensing and crushing device for small ice pieces

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US (1) US5125242A (en)
EP (1) EP0455057B1 (en)
JP (1) JPH05118723A (en)
AT (1) ATE108889T1 (en)
DE (2) DE4013825A1 (en)
ES (1) ES2056515T3 (en)

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Also Published As

Publication number Publication date
ES2056515T3 (en) 1994-10-01
EP0455057A2 (en) 1991-11-06
ATE108889T1 (en) 1994-08-15
US5125242A (en) 1992-06-30
DE59102220D1 (en) 1994-08-25
DE4013825A1 (en) 1991-10-31
JPH05118723A (en) 1993-05-14
EP0455057A3 (en) 1992-05-06

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