EP1844273B1 - Ice-making machine - Google Patents
Ice-making machine Download PDFInfo
- Publication number
- EP1844273B1 EP1844273B1 EP05850425A EP05850425A EP1844273B1 EP 1844273 B1 EP1844273 B1 EP 1844273B1 EP 05850425 A EP05850425 A EP 05850425A EP 05850425 A EP05850425 A EP 05850425A EP 1844273 B1 EP1844273 B1 EP 1844273B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tray
- ice maker
- maker according
- compartments
- ice
- 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.)
- Not-in-force
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25C—PRODUCING, WORKING OR HANDLING ICE
- F25C1/00—Producing ice
- F25C1/10—Producing ice by using rotating or otherwise moving moulds
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25C—PRODUCING, WORKING OR HANDLING ICE
- F25C2305/00—Special arrangements or features for working or handling ice
- F25C2305/022—Harvesting ice including rotating or tilting or pivoting of a mould or tray
- F25C2305/0221—Harvesting ice including rotating or tilting or pivoting of a mould or tray rotating ice mould
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25C—PRODUCING, WORKING OR HANDLING ICE
- F25C5/00—Working or handling ice
- F25C5/02—Apparatus for disintegrating, removing or harvesting ice
- F25C5/04—Apparatus for disintegrating, removing or harvesting ice without the use of saws
- F25C5/08—Apparatus for disintegrating, removing or harvesting ice without the use of saws by heating bodies in contact with the ice
- F25C5/10—Apparatus for disintegrating, removing or harvesting ice without the use of saws by heating bodies in contact with the ice using hot refrigerant; using fluid heated by refrigerant
Definitions
- the present invention relates to an automatic icemaker having a rack, and a tray pivotable in the rack about an axis, in which at least one compartment is formed, which can be filled with water to produce a piece of ice in shape predetermined by the compartment.
- a motor assembly is coupled to the pivot axis of the tray to pivot the tray from an upright position, in which water can freeze in the trays of the tray, to a dump position in which the openings of the trays face downward, thus that the pieces of ice could fall out.
- the problem here is, however, that the finished pieces of ice usually adhere quite firmly to the walls of their compartment, so that their weight alone is far from sufficient to let them fall out of the subjects.
- a powerful and correspondingly large and expensive engine is required for the proposed loosening by twisting the tray.
- the object of the invention is to provide an ice maker that combines a compact design with a high degree of reliability.
- a flexible conduit connecting the tray to the frame extends in an arc around the pivot axis of the tray.
- a pivoting movement of the tray leads in such a line at best to a low bending stress of the connection points of the line on the frame or on the tray;
- only the angle through which the conduit extends about the pivot axis changes, and the mean distance of the conduit from the pivot axis decreases with increasing angle and increases with decreasing angle.
- a forced by the pivotal movement of the tray deformation of the line is distributed very evenly over the length and therefore only leads to a low stress on the material of the line.
- the pivot axis is defined by a shaft about which the conduit extends.
- a hollow winding core is preferably mounted surrounding the shaft, around which the connecting line extends radially spaced apart. If, in the case of a very strong pivoting deflection, the connecting line snugly fits against the winding core, then the tightly tensioned connecting line prevents further pivoting.
- the winding core is arranged eccentrically with respect to the pivot axis in order to avoid contact between the line and the winding core, which could lead to fretting wear, as far as possible.
- a surrounding the connecting pipe drum is used essentially to protect the connecting line from damage by foreign bodies and the protection of a user from possibly voltage-carrying contacts of the connecting line.
- the drum is preferably mounted on the tray so that it pivots with it. This makes it possible to attach the winding core to the drum, preferably by latching.
- connection line extending continuously from the tray to the frame on the tray
- an intermediate piece of the connection line extending continuously from the tray to the frame is clamped between the tray and an arm projecting radially from the winding core.
- Such an arm may also serve as a shield which prevents contact between a moving part of the lead and a possibly sharp-edged terminal of the lead to the tray.
- a hollow contour for fixing the intermediate piece in the radial direction is provided on the arm.
- connection line is usually an electrical line; However, the invention is equally applicable to other types of conduits such as a water conduit for filling the compartments with fresh water.
- the electrical line can serve as a supply line for the electric heating device mounted on the tray; but it can also serve as a signal line for deriving a temperature signal from a sensor arranged on the tray or the like.
- the tray is from the upright position in which the upper edges of the intermediate walls between the compartments of the tray are horizontal, not only in the above-mentioned emptying position pivotable, but also in a tilted position in which the subjects (4) on the upper edges of the Communicate between partitions (3).
- the compartments of the icemaker tray are arranged in at least one row, and on one longitudinal side of each row of compartments and at least a part of their transverse sides is formed a wall projecting over the upper edge of the compartments of the row.
- This design of the icemaker tray allows water filled into the compartments in the tilted position to flood the dividing walls in an area adjacent to the projecting wall, so that an exactly equal water level can be achieved in all compartments. If this tray is pivoted to freeze in the upright position in which the partitions are substantially horizontal and no longer flooded, neatly separated pieces of ice with exactly uniform size can be made.
- the tray is coupled to a motor for driving the pivoting movement, preferably via an eccentric mechanism.
- This converts a rotational movement of the motor in the same direction into an oscillating pivotal movement of the tray of amplitude predetermined by the construction of the eccentric mechanism.
- a directional control of the motor is thereby unnecessary, and overstretching or upsetting the line can be reliably excluded.
- the eccentric mechanism comprises a linearly displaceable oscillating body carrying a rack meshing with a gear connected to the tray.
- any desired pivoting stroke of the tray is easy to construct.
- An eccentric member is preferably engaged with a rail extending on the vibrating body transverse to the direction of movement thereof to translate the revolving motion of the eccentric member into a reciprocating motion of the vibrating body.
- the compartments are preferably in the form of a rotating body segment. From these subjects, a piece of ice can be removed from the mold in a particularly simple manner by sliding in the circumferential direction of the body of revolution, without, as in a conventional cuboid ice piece of z.
- US Pat. No. 6,571,567 B2 considered type, during demolding between the bottom of the compartment and the ice body forms a cavity that impedes demolding unless a prevailing in the cavity vacuum is compensated.
- Fig. 1 shows an automatic ice cube maker according to the present invention in an exploded perspective view. It comprises a tray 1 in the form of a channel, which is closed at its end sides in each case by transverse walls 2 and divided by evenly spaced intermediate walls 3 into a plurality of identically shaped compartments 4, here seven, with a semi-cylindrical bottom. While the intermediate walls 3 are flush with the longitudinal wall 5 facing away from the observer, the longitudinal wall 6 facing the observer is extended beyond the upper edges of the intermediate walls 3. While the intermediate walls 3 are exactly semicircular, the transverse walls 2 in each case corresponding to the projection of the front longitudinal wall 6 on a sector 7 extending beyond the semicircular shape.
- the tray is shown 1 in a tilted position, in which the upper edges of the segments 7 are substantially horizontal, while the intermediate walls 3 to the longitudinal wall 6 are downhill.
- the tray 1 may be a plastic molding; Preferably, due to the good thermal conductivity, it is designed as a cast aluminum.
- a cable drum 11 is mounted on one of the transverse walls 2 of the tray 1, a cable drum 11 is mounted; it is used for the sheltered accommodation of a coiled supply cable 12, which is used to power a not visible in the figure, mounted on the underside of the tray 1 heater 13 (see Fig. 9 ) serves.
- the tray 1 is completely within an imaginary hollow cylinder defined by the lateral surface of the cable drum 11, which simultaneously represents the smallest possible cylinder into which the tray 1 fits.
- a journalled from the transverse wall 2 facing the viewer extends on the longitudinal center axis of the cable drum 11.
- a corresponding, from the second transverse wall through the cable drum 11 extending journal is not visible in the Fig.
- a plastic core hub 50 is provided to be mounted in an entangled manner with the umbilical 12 in the cable drum 11.
- a molded plastic frame is designated 15. It has an upwardly and downwardly open cavity 16 which is provided to mount the tray 1 therein. On the end walls 17, 18 of the cavity 16 bearing bushes 19, 20 are formed for the pivotable mounting of the tray 1.
- a longitudinal wall of the cavity 16 is formed by a box 21 which is provided to receive a drive motor 22 as well as various electronic components for controlling the operation of the icemaker.
- a pinion 23 is mounted, which in the FIGS. 3, 4 . 6 respectively 8 is better to see than in FIG. 2 , When fully assembled ice maker, the pinion 23 takes place in a cavity 24 of the end wall 17. It forms there with a gear 25, a reduction gear.
- the gear 25 carries a projecting in the axial direction pin 26 which is provided to engage in a vertical slot 27 of a vibrating body 28.
- the oscillating body 28 is guided horizontally displaceable by means of the pin 29 protruding into the cavity 24 from the end wall 17 and engaging in a horizontal slot 30 of the oscillating body.
- a toothing 31 formed on a lower edge of the oscillating body 28 meshes with a toothed wheel 32, which is provided so as to be non-rotatably mounted on the stub axle 14 of the tray 1.
- a to be screwed on the open side of the end wall 17 cover plate 33 closes the cavity 24.
- a mounting flange 34 with laterally beyond the end wall 17 protruding tabs 35 is used for mounting the icemaker in a refrigerator.
- a bottom plate 36 closes from below the box 21st
- Fig. 2 shows, viewed from the side of the end wall 18 and the box 21 ago, in a perspective view of the ice maker with the tray 1 in a tilted position.
- the upper edges of the sectors 7 on the transverse walls 2 of the tray 1 are horizontal.
- Fig. 3 shows a frontal view of the icemaker from the side of the end wall 17 ago, with cover plate 33 and mounting flange 34 are omitted to give the view into the cavity 24 of the end wall 17 free.
- the configuration shown here is the one where the icemaker is assembled.
- Various markings indicate a correct positioning of individual parts relative to each other.
- a first pair of markings 37, 38 is located on the end wall 17 itself, or on the gear 26 carrying the pin 26. If these markings 37, 38, as shown in the figure, are exactly aligned with each other, the pin 26 is located in a three o'clock position, that is, on the right-most point of his path, which he can reach.
- the mounted on the pin 26 and the stationary pin 29 vibrating body 28 is located at the right turning point of its path.
- Aligned markings 39, 40 on a protruding beyond the sprocket flange 41 of the gear 32 and on the end wall 17 show a correct orientation of the gear 32 and consequently also with its journal 14 in a cross-sectionally T-shaped recess of the gear 32nd engaging tray 1 on.
- An inherently redundant pair of markers 42, 43 on the teeth 31 of the pivot body 28 and the gear 32 indicates the correct positioning of the gear 32 and the oscillating body 31 with respect to each other.
- a sensor 44 for detecting the rotational position of the gear 32 is mounted adjacent thereto. It cooperates with a rib 45 projecting from the edge of the flange 41 on a part of its circumference in the axial direction, so that it can dive into a slot at the rear of the sensor housing. In the tilted position of Fig. 3 For the most part, the rib 45 is covered by the sensor 44 and the vibrating body 28.
- Fig. 4 differs from Fig. 3 in that the housing of the sensor 44 is shown partially cut open, so that two photocells 46, 47 bridging the slot can be seen in its interior.
- the rib 45 is located just above the two light barriers 46, 47 so that an unillustrated control electronics can recognize from the fact that both light barriers are open, that the tray 1 is in the tilted position and the drive motor 22 can stop to hold the tray 1 in the tilted position and can fill.
- the drive motor 22 is set by the control unit in motion to bring the tray 1 in the upright position in which the amounts of water in the compartments 4 of the tray. 1 neatly separated from each other.
- This position is in Fig. 5 in a perspective view accordingly Fig. 2 and in Fig. 6 in a frontal view accordingly Fig. 4 shown.
- the gear 25 is opposite to the position of Fig. 4 rotated in the clockwise direction, but the same position of the tray 1 could also be achieved by a rotation of the gear 25 in the counterclockwise direction.
- the achievement of the upright position is recognized by the fact that the rib 45 begins to obstruct the lower light barrier 47.
- the tray 1 In the upright position, the tray 1 remains standing for a while until the water in the compartments 4 is frozen.
- the standing time in the upright position can be fixed;
- the control circuit may also be connected to a temperature sensor to determine a sufficient time at the measured temperature for freezing the water on the basis of a measured temperature in the environment of the tray 1 and a characteristic curve stored in the control circuit.
- this heating device 13 is a bent into a loop electric heating rod which extends in close contact with the tray 1 between protruding from the underside heat exchanger ribs 49 therethrough and partly in a formed on the underside of the tray 1 groove 48 is included.
- the pieces of ice in the subjects 4 are superficially thawed.
- the water layer thus produced between the tray 1 and the pieces of ice acts as a sliding film on which the pieces of ice are movable with very little friction. Due to the cylinder segment cross-sectional shape of the compartments 4, the pieces of ice easily slide out of the compartments 4 and fall into a collecting container, not shown, arranged under the icemaker.
- the drive motor After draining the compartments 4, the drive motor is set in motion again, and the gear 25 is further rotated clockwise until it returns to the in Fig. 2 to 4 reached position shown and a new operating cycle of the icemaker begins.
- Fig. 1 shown supply cable 12 is continuously deformed, which is fixed with one end at the level of the transverse wall 2 by two solder lugs 51 to contact pins 52 of the heater 13 and the other end is guided by a notch 53 in the wall of the control electronics receiving box 22.
- Fig. 12 provided in a perspective view hollow cylindrical winding core 50 is provided. About one and a half turns of the umbilical 12 are as shown in FIG Fig. 10 to see loosely wrapped in the cable drum 11 around the winding core 50.
- the winding core 50 has an eccentric cylindrical bore which is non-rotatably mounted on a journal 14 of the tray.
- the center of the winding core 50 is displaced from the pivot axis to the clamped in the notch 53 end of the supply cable.
- the deformable windings terminate at one of the winding core 50 radially projecting arm 54, which extends below the immersed cable 12 against the behind transverse wall 2 of the tablet keeps pressed.
- a notch 55 is formed on the underside of the arm 54, which receives the cable 12 and fixed in the radial direction.
- the contact pins 52 of the heater 13 are hidden under a second arm 56 radially projecting from the winding core 50, so that the movable windings of the supply cable 12 can not shy from them during operation.
- Elastic locking fingers 57 on the outer edge of the arm 56 serve to anchor in a complementary shaped recess in the interior of the cable drum eleventh
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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)
- Refrigerator Housings (AREA)
- Confectionery (AREA)
Abstract
Description
Die vorliegende Erfindung betrifft einen automatischen Eisbereiter mit einem Gestell, und einem in dem Gestell um eine Achse schwenkbaren Tablett, in dem wenigstens ein Fach gebildet ist, das mit Wasser gefüllt werden kann, um ein Eisstück in durch das Fach vorgegebenen Form zu erzeugen.The present invention relates to an automatic icemaker having a rack, and a tray pivotable in the rack about an axis, in which at least one compartment is formed, which can be filled with water to produce a piece of ice in shape predetermined by the compartment.
Ein Eisbereiter dieser Art ist z. B. aus
Bei diesem herkömmlichen Eisbereiter ist eine Motorbaugruppe an die Schwenkachse des Tabletts gekoppelt, um das Tablett aus einer aufrechten Stellung, in der Wasser in den Fächern des Tabletts gefrieren kann, in eine Entleerungsstellung zu schwenken, in der die Öffnungen der Fächer nach unten weisen, so dass die Eisstücke herausfallen könnten. Problematisch ist hierbei jedoch, dass die fertigen Eisstücke normalerweise ziemlich fest an den Wänden ihres Fachs haften, so dass ihr Gewicht allein bei weitem nicht ausreicht, um sie aus den Fächern herausfallen zu lassen. Für das vorgeschlagene Lösen durch Verwinden des Tabletts ist ein kräftiger und entsprechend großer und kostspieliger Motor erforderlich.In this conventional icemaker, a motor assembly is coupled to the pivot axis of the tray to pivot the tray from an upright position, in which water can freeze in the trays of the tray, to a dump position in which the openings of the trays face downward, thus that the pieces of ice could fall out. The problem here is, however, that the finished pieces of ice usually adhere quite firmly to the walls of their compartment, so that their weight alone is far from sufficient to let them fall out of the subjects. For the proposed loosening by twisting the tray a powerful and correspondingly large and expensive engine is required.
Aus
Versucht man, das Lösen der Eisstücke bei dem Eisbereiter aus
Aufgabe der Erfindung ist, einen Eisbereiter zu schaffen, der einen kompakten Aufbau mit einem hohen Maß an Betriebssicherheit verbindet.The object of the invention is to provide an ice maker that combines a compact design with a high degree of reliability.
Die Aufgabe wird dadurch gelöst, dass eine flexible Leitung, die das Tablett mit dem Gestell verbindet, sich in einem Bogen um die Schwenkachse des Tabletts erstreckt. Eine Schwenkbewegung des Tabletts führt bei einer solchen Leitung allenfalls zu einer geringen Biegebeanspruchung der Anschlussstellen der Leitung am Gestell bzw. am Tablett; im wesentlichen ändert sich lediglich der Winkel, über den sich die Leitung um die Schwenkachse herum erstreckt, und der mittlere Abstand der Leitung von der Schwenkachse nimmt bei zunehmenden Winkel ab und bei abnehmendem Winkel zu. Eine durch die Schwenkbewegung des Tabletts erzwungene Verformung der Leitung verteilt sich sehr gleichmäßig über deren Länge und führt daher nur zu einer geringen Beanspruchung des Materials der Leitung.The object is achieved in that a flexible conduit connecting the tray to the frame extends in an arc around the pivot axis of the tray. A pivoting movement of the tray leads in such a line at best to a low bending stress of the connection points of the line on the frame or on the tray; In essence, only the angle through which the conduit extends about the pivot axis changes, and the mean distance of the conduit from the pivot axis decreases with increasing angle and increases with decreasing angle. A forced by the pivotal movement of the tray deformation of the line is distributed very evenly over the length and therefore only leads to a low stress on the material of the line.
Vorzugsweise ist die Schwenkachse durch eine Welle definiert, um die herum sich die Leitung erstreckt.Preferably, the pivot axis is defined by a shaft about which the conduit extends.
Um eine materialbelastende übermäßige Krümmung der Leitung bei großer Schwenkauslenkung zu verhindern, ist vorzugsweise ein hohler Wickelkern die Welle umgebend montiert, um den herum sich die Verbindungsleitung radial beabstandet erstreckt. Wenn im Falle einer sehr starken Schwenkauslenkung die Verbindungsleitung sich dicht an den Wickelkern anschmiegt, verhindert die dann straff gespannte Verbindungsleitung ein weiteres Schwenken.In order to prevent a material-stressing excessive curvature of the line with a large pivoting deflection, a hollow winding core is preferably mounted surrounding the shaft, around which the connecting line extends radially spaced apart. If, in the case of a very strong pivoting deflection, the connecting line snugly fits against the winding core, then the tightly tensioned connecting line prevents further pivoting.
Vorzugsweise ist der Wickelkern in Bezug zur Schwenkachse exzentrisch angeordnet, um einen Kontakt zwischen Leitung und Wickelkern, der zu Reibverschleiß führen könnte, weitestgehend zu vermeiden.Preferably, the winding core is arranged eccentrically with respect to the pivot axis in order to avoid contact between the line and the winding core, which could lead to fretting wear, as far as possible.
Eine die Verbindungsleitung umgebende Trommel dient im wesentlichen dem Schutz der Verbindungsleitung vor Beschädigung durch Fremdkörper sowie dem Schutz eines Benutzers vor möglicherweise Spannung führenden Kontakten der Verbindungsleitung.A surrounding the connecting pipe drum is used essentially to protect the connecting line from damage by foreign bodies and the protection of a user from possibly voltage-carrying contacts of the connecting line.
Die Trommel ist vorzugsweise an dem Tablett montiert, so dass sie mit diesem schwenkt. Dies ermöglicht es, den Wickelkern an der Trommel zu befestigen, vorzugsweise durch Verrasten.The drum is preferably mounted on the tray so that it pivots with it. This makes it possible to attach the winding core to the drum, preferably by latching.
Um einen Anschluss der sich durchgehend vom Tablett zum Gestell erstreckenden Verbindungsleitung am Tablett mechanisch zu entlasten, ist vorzugsweise ein Zwischenstück der sich durchgehend vom Tablett zum Gestell erstreckenden Verbindungsleitung zwischen dem Tablett und einem von dem Wickelkern radial abstehenden Arm geklemmt.In order to relieve a connection of the connecting line extending continuously from the tray to the frame on the tray, preferably an intermediate piece of the connection line extending continuously from the tray to the frame is clamped between the tray and an arm projecting radially from the winding core.
Ein solcher Arm kann auch als eine Abschirmung dienen, die einen Kontakt zwischen einem beweglichen Teil der Leitung und einer möglicherweise scharfkantigen Anschlussstelle der Leitung an das Tablett verhindert.Such an arm may also serve as a shield which prevents contact between a moving part of the lead and a possibly sharp-edged terminal of the lead to the tray.
Als weitere Entlastungsmaßnahme ist an dem Arm eine Hohlkontur zum Fixieren des Zwischenstücks in radialer Richtung vorgesehen.As a further relief measure, a hollow contour for fixing the intermediate piece in the radial direction is provided on the arm.
Je größer die Schwenkbewegungsfreiheit des Tabletts ist, um so größer sollte auch der Winkel sein, auf dem sich die Leitung um die Achse herum erstreckt. Vorzugsweise beträgt dieser Winkel wenigstens eine halbe Umdrehung.The greater the pivoting freedom of the tray, the greater should be the angle at which the line extends around the axis. This angle is preferably at least half a turn.
Bei der Verbindungsleitung handelt es sich meist um eine elektrische Leitung; die Erfindung ist jedoch in gleicher Weise auch auf andere Arten von Leitungen wie etwa eine Wasserleitung zum Befüllen der Fächer mit Frischwasser anwendbar.The connection line is usually an electrical line; However, the invention is equally applicable to other types of conduits such as a water conduit for filling the compartments with fresh water.
Die elektrische Leitung kann wie oben bereits erwähnt als Versorgungsleitung für die am Tablett angebrachte elektrische Heizeinrichtung dienen; sie kann aber auch als Signalleitung zum Ableiten eines Temperatursignals von einem am Tablett angeordneten Sensor oder dgl. dienen.As already mentioned above, the electrical line can serve as a supply line for the electric heating device mounted on the tray; but it can also serve as a signal line for deriving a temperature signal from a sensor arranged on the tray or the like.
Vorzugsweise ist das Tablett aus der aufrechten Stellung, in der die Oberkanten der Zwischenwände zwischen den Fächern des Tabletts horizontal verlaufen, nicht nur in die bereit erwähnte Entleerungsstellung schwenkbar, sondern auch in eine gekippte Stellung, in der die Fächer (4) über die Oberkanten der Zwischenwände (3) hinweg kommunizieren.Preferably, the tray is from the upright position in which the upper edges of the intermediate walls between the compartments of the tray are horizontal, not only in the above-mentioned emptying position pivotable, but also in a tilted position in which the subjects (4) on the upper edges of the Communicate between partitions (3).
Vorzugsweise sind die Fächer des Eisbereiter-Tabletts in wenigstens einer Reihe angeordnet, und an einer Längsseite jeder Reihe von Fächern und wenigstens einem Teil ihrer Querseiten ist eine über die Oberkante von die Fächer der Reihe voneinander trennenden Zwischenräumen überstehende Wand gebildet. Diese Konstruktion des Eisbereiter-Tabletts ermöglicht es, dass in der gekippten Stellung in die Fächer gefülltes Wasser die Zwischenwände in einem an die überstehende Wand angrenzenden Bereich überflutet, so dass ein exakt gleicher Wasserstand in allen Fächern erreicht werden kann. Wenn dieses Tablett zum Gefrieren in die aufrechte Stellung geschwenkt wird, in der die Zwischenwände im Wesentlichen horizontal verlaufen und nicht mehr überflutet sind, können säuberlich voneinander getrennte Eisstücke mit exakt gleichmäßiger Größe hergestellt werden.Preferably, the compartments of the icemaker tray are arranged in at least one row, and on one longitudinal side of each row of compartments and at least a part of their transverse sides is formed a wall projecting over the upper edge of the compartments of the row. This design of the icemaker tray allows water filled into the compartments in the tilted position to flood the dividing walls in an area adjacent to the projecting wall, so that an exactly equal water level can be achieved in all compartments. If this tray is pivoted to freeze in the upright position in which the partitions are substantially horizontal and no longer flooded, neatly separated pieces of ice with exactly uniform size can be made.
Das Tablett ist an einen Motor zum Antreiben der Schwenkbewegung vorzugsweise über einen Exzentermechanismus gekoppelt. Dieser setzt eine gleichsinnige Drehbewegung des Motors in eine oszillierende Schwenkbewegung des Tabletts von durch die Konstruktion des Exzentermechanismus vorgegebener Amplitude um. Eine Richtungssteuerung des Motors wird dadurch überflüssig, und ein Überdehnen oder -stauchen der Leitung kann dadurch zuverlässig ausgeschlossen werden.The tray is coupled to a motor for driving the pivoting movement, preferably via an eccentric mechanism. This converts a rotational movement of the motor in the same direction into an oscillating pivotal movement of the tray of amplitude predetermined by the construction of the eccentric mechanism. A directional control of the motor is thereby unnecessary, and overstretching or upsetting the line can be reliably excluded.
Vorzugsweise umfasst der Exzentermechanismus einen linear verschiebbaren Schwingkörper, der eine Zahnstange trägt, die mit einem mit dem Tablett verbundenen Zahnrad kämmt. Mit einer solchen Anordnung ist ein beliebiger gewünschter Schwenkhub des Tabletts leicht zu konstruieren.Preferably, the eccentric mechanism comprises a linearly displaceable oscillating body carrying a rack meshing with a gear connected to the tray. With such an arrangement, any desired pivoting stroke of the tray is easy to construct.
Ein Exzenterelement ist vorzugsweise mit einer Schiene im Eingriff, die sich an dem Schwingkörper quer zu dessen Bewegungsrichtung erstreckt, um die Umlaufbewegung des Exzenterelements in eine Hin-und-Herbewegung des Schwingkörpers umzusetzen.An eccentric member is preferably engaged with a rail extending on the vibrating body transverse to the direction of movement thereof to translate the revolving motion of the eccentric member into a reciprocating motion of the vibrating body.
Um das Entformen der fertigen Eisstücke zu erleichtern, haben die Fächer vorzugsweise die Form eines Rotationskörpersegments. Aus diesen Fächern kann ein Eisstück besonders einfach entformt werden, indem es in Umfangsrichtung des Rotationskörpers gleitet, ohne dass sich, wie bei einem herkömmlichen quaderförmigen Eisstück vom z. B. in
Weitere Merkmale und Vorteile der Erfindung ergeben sich aus der nachfolgenden Beschreibung von Ausführungsbeispielen unter der Bezugnahme auf die beigefügten Figuren. Es zeigen:
- Fig. 1
- eine auseinander gezogene Darstellung eines automatischen Eisbereiters gemäß einer bevorzugten Ausgestaltung der Erfindung;
- Fig. 2
- eine perspektivische Ansicht des Eisbereiters aus
Fig. 1 im zusammengefügten Zustand mit Eisbereiter-Tablett in gekippter Stellung; - Fig. 3
- eine Frontalansicht des Eisbereiters der
Fig. 1 bzw. 2 in Richtung der Schwenkachse; - Fig. 4
- die Ansicht der
Fig. 3 mit teilweise aufgeschnittenen Sensorgehäuse; - Fig. 5
- eine zu
Fig. 2 analoge Ansicht mit Eisbereiter-Tablett in aufrechter Stellung; - Fig. 6
- eine zu
Fig. 4 analoge Ansicht mit dem Eisbereiter-Tablett in aufrechter Stellung; - Fig. 7
- eine perspektivische Ansicht analog zu
undFiguren 25 mit dem Eisbereiter-Tablett in Entleerungsstellung; - Fig. 8
- eine zu
Fig. 4 bzw. 6 analoge Ansicht; - Fig.9
- eine perspektivische auseinandergezogene Ansicht von unten des Eisbereiter-Tabletts;
- Fig. 10
- eine Frontalansicht der Kabeltrommel; und
- Fig. 11
- eine Draufsicht auf das Tablett mit Kabeltrommel und Versorgungskabel; und
- Fig. 12
- eine perspektivische Ansicht eines Wickelkerns für das Versorgungskabel.
- Fig. 1
- an exploded view of an automatic ice maker according to a preferred embodiment of the invention;
- Fig. 2
- a perspective view of the ice maker
Fig. 1 in assembled condition with ice maker tray in tilted position; - Fig. 3
- a frontal view of the ice maker the
Fig. 1 or 2 in the direction of the pivot axis; - Fig. 4
- the view of
Fig. 3 with partially cut sensor housing; - Fig. 5
- one too
Fig. 2 analogue view with ice maker tray in upright position; - Fig. 6
- one too
Fig. 4 analogue view with the icemaker tray in an upright position; - Fig. 7
- a perspective view analogous to
Figures 2 and5 with the ice maker tray in emptying position; - Fig. 8
- one too
Fig. 4 or 6 analogue view; - Figure 9
- a perspective exploded view from below of the ice maker tray;
- Fig. 10
- a front view of the cable drum; and
- Fig. 11
- a plan view of the tray with cable drum and supply cable; and
- Fig. 12
- a perspective view of a winding core for the supply cable.
Das Tablett ist 1 in einer gekippten Stellung gezeigt, in der die Oberkanten der Segmente 7 im wesentlichen horizontal verlaufen, während die der Zwischenwände 3 zu der Längswand 6 hin abschüssig sind.The tray is shown 1 in a tilted position, in which the upper edges of the
Das Tablett 1 kann ein Kunststoff-Formteil sein; vorzugsweise, auf Grund des guten Wärmeleitvermögens, ist es als Gussteil aus Aluminium ausgebildet.The
An einer der Querwände 2 des Tabletts 1 ist eine Kabeltrommel 11 montiert; sie dient zur geschützten Unterbringung eines gewendelten Versorgungskabels 12, das zur Stromversorgung einer in der Figur nicht sichtbaren, an der Unterseite des Tabletts 1 angebrachten Heizvorrichtung 13 (siehe
Ein aus Kunststoff geformtes Gestell ist mit 15 bezeichnet. Es weist einen nach oben und unten offenen Hohlraum 16 auf, der vorgesehen ist, um darin das Tablett 1 zu montieren. An den Stirnwänden 17, 18 des Hohlraums 16 sind Lagerbuchsen 19, 20 für die schwenkbare Lagerung des Tabletts 1 geformt. Eine Längswand des Hohlraums 16 ist durch einen Kasten 21 gebildet, der vorgesehen ist, um einen Antriebsmotor 22 sowie diverse elektronische Komponenten für die Steuerung des Betriebs des Eisbereiters aufzunehmen. Auf der Welle des Antriebsmotors 22 ist ein Ritzel 23 montiert, das in den
Das Zahnrad 25 trägt einen in axialer Richtung abstehenden Zapfen 26, der vorgesehen ist, um in ein vertikales Langloch 27 eines Schwingkörpers 28 einzugreifen. Der Schwingkörper 28 ist mit Hilfe von von der Stirnwand 17 in den Hohlraum 24 vorstehenden Zapfen 29, die in ein horizontales Langloch 30 des Schwingkörpers eingreifen, horizontal verschiebbar geführt. Eine an einer Unterkante des Schwingkörpers 28 gebildete Verzahnung 31 kämmt mit einem Zahnrad 32, das vorgesehen ist, um drehfest auf den Achszapfen 14 des Tabletts 1 aufgesteckt zu werden.The
Eine an der offenen Seite der Stirnwand 17 zu verschraubende Deckplatte 33 verschließt den Hohlraum 24. Ein Befestigungsflansch 34 mit seitlich über die Stirnwand 17 überstehenden Laschen 35 dient zur Montage des Eisbereiters in einem Kältegerät. Eine Bodenplatte 36 verschließt von unten den Kasten 21.A to be screwed on the open side of the
Aufeinander ausgerichtete Markierungen 39, 40 an einem über den Zahnkranz überstehenden Flansch 41 des Zahnrades 32 und an der Stirnwand 17 zeigen eine korrekte Orientierung des Zahnrades 32 und in Folge dessen auch des mit seinem Achszapfen 14 in eine im Querschnitt T-förmige Aussparung des Zahnrades 32 eingreifenden Tabletts 1 an. Ein an sich redundantes Paar von Markierungen 42, 43 an der Verzahnung 31 des Schwenkkörpers 28 und am Zahnrad 32 zeigt die korrekte Positionierung von Zahnrad 32 und Schwingkörper 31 in Bezug aufeinander an.Aligned
Ein Sensor 44 zum Erfassen der Drehstellung des Zahnrads 32 ist neben diesem montiert. Er wirkt mit einer Rippe 45 zusammen, die vom Rand des Flansches 41 auf einem Teil von dessen Umfang in axialer Richtung absteht, so dass sie in einen Schlitz an der Rückseite des Sensorgehäuses eintauchen kann. In der gekippten Stellung der
Nachdem eine vorgegebene Wassermenge unter der Kontrolle der Steuerschaltung in das Tablett 1 dosiert worden ist, wird der Antriebsmotor 22 von der Steuereinheit in Gang gesetzt, um das Tablett 1 in die aufrechte Stellung zu bringen, in der die Wassermengen in den Fächern 4 des Tabletts 1 säuberlich von einander getrennt sind. Diese Stellung ist in
In der aufrechten Stellung bleibt das Tablett 1 eine Zeit lang stehen, bis das Wasser in den Fächern 4 gefroren ist. Die Stehzeit in der aufrechten Stellung kann fest vorgegeben sein; alternativ kann die Steuerschaltung auch an einen Temperatursensor angeschlossen sein, um anhand einer gemessenen Temperatur in der Umgebung des Tabletts 1 und einer in der Steuerschaltung gespeicherten Kennkurve jeweils eine bei der gemessenen Temperatur zum Gefrieren des Wassers ausreichende Zeitspanne festzulegen.In the upright position, the
Nach Verstreichen dieser Zeitspanne wird der Antriebsmotor 22 erneut in Gang gesetzt, um das Zahnrad 25 in die in
In dieser Stellung sind die Fächer 4 des Tabletts 1 nach unten offen, so dass die darin enthaltenen Eisstücke herausfallen können. Um das Lösen der Eisstücke zu erleichtern, ist die bereits erwähnte elektrische Heizeinrichtung 13 vorgesehen. Wie in
Durch kurzzeitiges Beheizen des Tabletts 1 mit Hilfe der Heizeinrichtung 13 werden die Eisstücke in den Fächern 4 oberflächlich angetaut. Die zwischen dem Tablett 1 und den Eisstücken so erzeugte Wasserschicht wirkt wie ein Gleitfilm, auf dem die Eisstücke mit sehr geringer Reibung beweglich sind. Auf Grund der Zylindersegment-Querschnittsform der Fächer 4 gleiten die Eisstücke leicht aus den Fächern 4 heraus und fallen in einen nicht dargestellten, unter dem Eisbereiter angeordneten Auffangbehälter.By briefly heating the
Nach dem Entleeren der Fächer 4 wird der Antriebsmotor wieder in Gang gesetzt, und das Zahnrad 25 wird im Uhrzeigersinn weitergedreht, bis es wieder die in
Das Hin- und Herschwenken des Tabletts bringt mit sich, dass das in
Der Wickelkern 50 hat eine exzentrische zylindrische Bohrung, die drehfest auf einen Achszapfen 14 des Tabletts aufgesteckt ist. Der Mittelpunkt des Wickelkerns 50 ist von der Schwenkachse zu dem in der Kerbe 53 eingeklemmten Ende des Versorgungskabels hin verschoben. Wenn das Tablett in der Perspektive der
Die verformbaren Windungen enden an einem von dem Wickelkern 50 radial abstehenden Arm 54, der das unter ihn abtauchende Kabel 12 gegen die dahinterliegende Querwand 2 des Tabletts gedrückt hält. Wie in
Die Kontaktstifte 52 der Heizeinrichtung 13 sind unter einem zweiten von dem Wickelkern 50 radial abstehenden Arm 56 verborgen, so dass die beweglichen Windungen des Versorgungskabels 12 sich im Betrieb an ihnen nicht aufscheuem können. Elastische Rastfinger 57 am äußeren Rand des Arms 56 dienen der Verankerung in einer komplementär geformten Aussparung im Innern der Kabeltrommel 11.The contact pins 52 of the
Claims (17)
- Ice maker comprising a frame (15), a tray (1) which is pivotable in the frame (15) about an axis and in which at least one compartment (4) is formed, and a flexible line (12) which extends in a curve about the pivot axis of the tray (1) and which connects the tray (1) with the frame (15), characterised in that the axis is defined by a shaft section (14) surrounded by a hollow core (50), around which the connecting line (12) extends at a radial spacing.
- Ice maker according to claim 1, characterised in that the winding core (50) is arranged eccentrically.
- Ice maker according to claim 1 or 2, characterised in that the curve of the connecting line (12) is received in a drum (11).
- Ice maker according to claim 3, characterised in that the drum (11) is mounted at the tray (1).
- Ice maker according to claim 1 and claim 4, characterised in that the winding core (50) is detented to the drum (11).
- Ice maker according to claim 1 or 5, characterised in that an intermediate piece of the connecting line (12) extending continuously from the tray (1) to the frame (15) is clamped between the tray (1) and an arm (54) radially protruding from the winding core (50).
- Ice maker according to claim 6, characterised in that the arm (54) has a hollow profile (55) for fixing the intermediate piece in radial direction.
- Ice maker according to claims 1, 2 or 5 to 7, characterised in that an arm (56) radially protruding from the winding core (50) extends between a connecting point (54) of the line (12) at the tray (1) and a movable part of the line (12).
- Ice maker according to one of the preceding claims 1 to 8, characterised in that the curve goes around at least half the pivot axis.
- Ice maker according to one of the preceding claims 1 to 9, characterised in that the connecting line (12) is an electrical line.
- Ice maker according to claim 10, characterised in that a temperature sensor is connected with the connecting line.
- Ice maker according to claim 10 or 11, characterised in that an electric heating device (13) is connected with the connecting line (12).
- Ice maker according to one of claims 1 to 12, characterised in that the tray (1) is pivotable between an upright setting in which the upper edges of the partition walls (3) extend horizontally and an emptying setting in which the openings of the compartments (4) face downwardly.
- Ice maker according to one of claims 1 to 13, characterised in that the tray (1) is pivotable between an upright setting in which the upper edges of the partition walls extend horizontally and a tilted setting in which the compartments (4) communicate via the upper edges of the partition walls (3).
- Ice maker according to one of claims 1 to 14, characterised in that several compartments (4) are arranged in a number of rows parallel to the pivot axis and that a wall (6) extending above the upper edges of partition walls (3) separating the compartments of a row from one another is formed at a longitudinal side of each row of compartments (4) and at least a part of the transverse sides thereof.
- Ice maker according to one of claims 1 to 15, characterised in that the tray (1) is coupled to a motor (22) by way of an eccentric mechanism (25, 26, 28).
- Ice maker according to one of claims 1 to 16, characterised in that the compartments (4) each have the form of a segment of a body of rotation.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005003242A DE102005003242A1 (en) | 2005-01-24 | 2005-01-24 | Ice makers |
PCT/EP2005/056375 WO2006076981A1 (en) | 2005-01-24 | 2005-12-01 | Ice-making machine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1844273A1 EP1844273A1 (en) | 2007-10-17 |
EP1844273B1 true EP1844273B1 (en) | 2009-09-09 |
Family
ID=36096454
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05850425A Not-in-force EP1844273B1 (en) | 2005-01-24 | 2005-12-01 | Ice-making machine |
Country Status (6)
Country | Link |
---|---|
US (1) | US8601829B2 (en) |
EP (1) | EP1844273B1 (en) |
AT (1) | ATE442559T1 (en) |
DE (2) | DE102005003242A1 (en) |
ES (1) | ES2331373T3 (en) |
WO (1) | WO2006076981A1 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5405168B2 (en) * | 2008-04-01 | 2014-02-05 | ホシザキ電機株式会社 | Ice making unit of a flow-down type ice machine |
US9976788B2 (en) | 2016-01-06 | 2018-05-22 | Electrolux Home Products, Inc. | Ice maker with rotating ice tray |
US10539354B2 (en) | 2017-12-22 | 2020-01-21 | Electrolux Home Products, Inc. | Direct cooling ice maker |
US11181309B2 (en) | 2017-12-22 | 2021-11-23 | Electrolux Home Products, Inc. | Direct cooling ice maker |
US11598566B2 (en) | 2020-04-06 | 2023-03-07 | Electrolux Home Products, Inc. | Revolving ice maker |
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US3952539A (en) * | 1974-11-18 | 1976-04-27 | General Motors Corporation | Water tray for clear ice maker |
DE2648177A1 (en) | 1976-10-25 | 1978-04-27 | Geb Drueck Ursula Grau | Ice cube tray which is rotated for emptying - has thermostat controlled switch supplying power to heating elements in tray and internal partitions |
US4142378A (en) | 1977-12-02 | 1979-03-06 | General Motors Corporation | Cam controlled switching means for ice maker |
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USRE34174E (en) * | 1990-03-23 | 1993-02-09 | White Consolidated Industries, Inc. | Ice maker with thermal protection |
JPH05280848A (en) | 1992-04-01 | 1993-10-29 | Sharp Corp | Automated ice making device |
JPH06273014A (en) | 1993-03-18 | 1994-09-30 | Toshiba Home Technol Corp | Automatic ice making apparatus |
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-
2005
- 2005-01-24 DE DE102005003242A patent/DE102005003242A1/en not_active Withdrawn
- 2005-12-01 DE DE502005008121T patent/DE502005008121D1/en active Active
- 2005-12-01 WO PCT/EP2005/056375 patent/WO2006076981A1/en active Application Filing
- 2005-12-01 EP EP05850425A patent/EP1844273B1/en not_active Not-in-force
- 2005-12-01 US US11/795,592 patent/US8601829B2/en not_active Expired - Fee Related
- 2005-12-01 AT AT05850425T patent/ATE442559T1/en not_active IP Right Cessation
- 2005-12-01 ES ES05850425T patent/ES2331373T3/en active Active
Also Published As
Publication number | Publication date |
---|---|
DE502005008121D1 (en) | 2009-10-22 |
US8601829B2 (en) | 2013-12-10 |
DE102005003242A1 (en) | 2006-07-27 |
US20090100856A1 (en) | 2009-04-23 |
EP1844273A1 (en) | 2007-10-17 |
ES2331373T3 (en) | 2009-12-30 |
ATE442559T1 (en) | 2009-09-15 |
WO2006076981A1 (en) | 2006-07-27 |
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