EP1118704B1 - Drum washing machine - Google Patents
Drum washing machine Download PDFInfo
- Publication number
- EP1118704B1 EP1118704B1 EP01105712A EP01105712A EP1118704B1 EP 1118704 B1 EP1118704 B1 EP 1118704B1 EP 01105712 A EP01105712 A EP 01105712A EP 01105712 A EP01105712 A EP 01105712A EP 1118704 B1 EP1118704 B1 EP 1118704B1
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- EP
- European Patent Office
- Prior art keywords
- drum
- casing
- washing machine
- holes
- type washing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
- D06F37/02—Rotary receptacles, e.g. drums
- D06F37/04—Rotary receptacles, e.g. drums adapted for rotation or oscillation about a horizontal or inclined axis
Definitions
- the invention relates to a washing machine or a washer-dryer with an in a tub horizontal or inclined and rotatable drum with a jacket and two cover surfaces, the jacket or one of the cover surfaces with a removal opening is equipped, and wherein the jacket is wholly or partly made of sheet metal, which is provided with a domed structure facing the inside of the drum.
- Drums of washing machines or washer dryers usually consist of sheet metal structures. Due to the high spin speeds of up to 1600 rpm, the drum construction great demands are placed on strength, shape retention and rigidity. It is known from DE 44 37 986 A1 and from DE-OS 25 57 215, the sheet metal which the drum is manufactured to provide with arched structures to increase its strength.
- DE-44 45669 is a washing machine known, the cylindrical jacket a Has a large number of holes and the trough-like characteristics or surveys are provided between the holes.
- a washing machine is known from US Pat. No. 2,591,143, the drum of which has a curvature in Form of a corrugation extending over the entire length of the drum shell is.
- the perforated drum is arranged in the outwardly directed depressions. This leads to residual water in the flat areas between the holes stops and drainage deteriorates.
- such a drum structure the laundry is rubbed very hard and damaged as a result.
- Drums with hole diameters of around 2 mm which do not have to be put through, therefore have a relatively smooth surface, which has the optical properties described above absence.
- the invention thus presents the problem of designing the drum of a washing machine in such a way that that at the same time good optical properties and complete emptying of the Residual water can be reached.
- the holes are compared to those of conventional drum washing machines are reduced in number and / or in diameter. This is the passage reduced by fluff or threads, which is more gentle on the laundry.
- the drum washing machine (1) designed according to the invention has a tub (2), in which a drum (3) for receiving laundry (4) is rotatably mounted.
- the drive the drum (3) is driven by a motor (13) via a V-belt (13.1).
- the tub (2) is swingably suspended on springs (5) in the housing (6) and becomes Damping of these vibrations in the lower area by shock absorbers (7) compared to Supported base (8).
- the detergent / fabric softener required to carry out a washing program will be the Suds container (2) via a detergent dispenser (9) with connected connecting hose (10) fed. To do this, the user can select the desired substances Corresponding compartments (11) of a detergent drawer (12) can be filled. About an in the water supply, not shown, the entire subject at the beginning of of the respective program part in the tub (2).
- a microprocessor control is used to control the different washing programs provided that via signal lines (14) with various transducers and the controls connected is. It issues time and status-dependent commands via control lines (15) to various actuators (motors, valves, display elements ).
- the drum (3) is in an automatic manufacturing process described in more detail elsewhere (not shown). This is done first for the drum jacket (3.1) a sheet metal strip is cut from a coil and punched with the desired one Provide perforation (16). The sheet metal strip is then bent in a circle and welded the two mutually facing edges. The resulting cylinder is provided with shaping and stabilizing contours by known expansion processes. Then a vaulted structure is created by a method known from DE-OS 25 57 215 put on the coat. Then the floor (3.2) and the Cap (3.3).
- Figure 3 shows a section of the drum shell (3.1) with the basic structure of the Arch structure and the arrangement of the holes (16) according to the invention:
- the jacket (3.1) is preferably in sections with inwardly curved polygons Hexagons (17).
- the arrangement of the holes (16) is determined by the requirement for rapid, residue-free Water drainage and good degree of textile drainage when skidding with pumps or only pumping, optimal laundry protection, low sensitivity to foreign bodies and good looks.
- Rows of holes are on the front and rear edges (3.5) of the drum shell (3.1), the are not arched. Additionally or alternatively, there are more limited, unstructured ones Zones (3.6) with holes (16) possible, for example as shown in Figure 3, in the middle of the drum casing (3.1).
- the domed areas can be completely be unperforated so that the structure only serves to secure the drum (3), but it can also the perforation (16) described above in the preferred locations within the Vaulted structure, e.g. B. the corner points (20) of the polygons (17).
- the diameter of the drum (3) can be the same if the material thickness is the same Tub diameter can be increased by up to 10 mm, if not one Prevents water jacket formation when spinning. This allows the smallest distance between the drum casing (3.1) and the tub container is only approx. 5 mm.
- Drum jackets (3.1) can be provided with the arch structure as cylinders and before or subsequently subjected to another forming process (e.g. expanding). Just like that it is possible to produce finished circuit boards or coil material with curved structures (see DE 44 37 986 A1) to process or circuit boards or coil material in a continuous To provide the manufacturing process with the arch structures, to punch before or after and undergo further forming processes (e.g. roll forming, embossing, pressing, etc.), as well as to shape a cylinder.
- further forming processes e.g. roll forming, embossing, pressing, etc.
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
- Treatment Of Fiber Materials (AREA)
- Detail Structures Of Washing Machines And Dryers (AREA)
Description
Die Erfindung betrifft eine Waschmaschine oder einen Waschtrockner mit einer in einem Laugenbehälter horizontal oder geneigt und drehbar gelagerten Trommel mit einem Mantel und zwei Deckflächen, wobei der Mantel oder eine der Deckflächen mit einer Entnahmeöffnung ausgestattet ist, und wobei der Mantel ganz oder teilweise aus einem Blech gefertigt ist, welches mit einer zum Trommelinneren gerichteten Wölbstruktur versehenen ist.The invention relates to a washing machine or a washer-dryer with an in a tub horizontal or inclined and rotatable drum with a jacket and two cover surfaces, the jacket or one of the cover surfaces with a removal opening is equipped, and wherein the jacket is wholly or partly made of sheet metal, which is provided with a domed structure facing the inside of the drum.
Trommeln von Waschautomaten oder Waschtrocknern bestehen in der Regel aus Blechkonstruktionen. Wegen der hohen Schleuderdrehzahlen bis zu 1600 Upm werden an die Trommelkonstruktion große Anforderungen bezüglich Festigkeit, Formhaltigkeit und Steifigkeit gestellt. Aus der DE 44 37 986 A1 und aus der DE-OS 25 57 215 ist es bekannt, das Blech, aus dem die Trommel gefertigt wird, zur Erhöhung seiner Festigkeit mit Wölbstrukturen zu versehen.Drums of washing machines or washer dryers usually consist of sheet metal structures. Due to the high spin speeds of up to 1600 rpm, the drum construction great demands are placed on strength, shape retention and rigidity. It is known from DE 44 37 986 A1 and from DE-OS 25 57 215, the sheet metal which the drum is manufactured to provide with arched structures to increase its strength.
Bei Waschmaschinen ist es weiterhin üblich, den Trommelmantel und evtl. auch die Deckflächen mit Löchern zu versehen, damit ein Laugenaustausch zwischen Wäsche und Laugenbehälter gewährleistet ist. Diese Löcher besitzen bei heute üblichen Waschmaschinen Durchmesser in der Größenordnung von 3,5 mm. Dabei werden im Fertigungsprozess der Trommel zunächst Löcher mit einem Durchmesser von ca. 2,5 mm in ein Blechcoil eingestanzt und anschließend durch einen Prägevorgang, das sogenannte Durchstellen, trichterförmig vertieft und auf 3,5 mm geweitet. Beim Formen und Verschweißen eines zugeschnittenen Coilteils zu einem zylindrischen Mantel wird die Vertiefung der Löcher nach außen gerichtet. Dies geschieht zu dem Zweck, dass am Lochrand evtl. vorhandene Grate nicht ins Trommelinnere ragen und so der Kontakt der Wäsche zu diesen Graten vermieden wird. Das Durchstellen und die damit verbundene Strukturierung der Trommelinnenseite ergibt den Effekt, dass einerseits der Anteil der ebenen Oberfläche an der gesamten Mantelfläche verringert und andererseits das in die Trommel einfallende Licht diffus gespiegelt wird. Hierdurch wird zum einen der Eindruck von Solidität und Glanz, also hochwertigem Material vermittelt, außerdem fallen Kratzer oder Verunreinigungen weniger auf.In washing machines, it is still common for the drum jacket and possibly also the top surfaces provided with holes so that an exchange of lye between the laundry and the tub is possible is guaranteed. These holes have diameters in today's washing machines in the order of 3.5 mm. The drum manufacturing process First punch holes with a diameter of approx. 2.5 mm in a sheet metal coil and then through a stamping process, the so-called penetration, deepened in a funnel shape and widened to 3.5 mm. When molding and welding a cut coil part The recess of the holes is directed outwards in a cylindrical jacket. this happens for the purpose that any burrs on the edge of the hole do not protrude into the inside of the drum and so the contact of the laundry to these ridges is avoided. The putting through and The associated structuring of the inside of the drum gives the effect that on the one hand the proportion of the flat surface in the total surface area is reduced and on the other hand the light entering the drum is reflected diffusely. On the one hand, this creates the impression of solidity and shine, i.e. high-quality material, and scratches also fall or less contamination.
Aus der DE-44 45669 ist eine waschmaschine bekannt, deren zylindrischer Mantel eine Vielzahl von Löchern aufweist und bei der muldenartige Ausprägungen bzw. Erhebungen zwischen den Löchern vorgesehen sind.DE-44 45669 is a washing machine known, the cylindrical jacket a Has a large number of holes and the trough-like characteristics or surveys are provided between the holes.
Aus der US-A.2,591,143 ist eine Waschmaschine bekannt, deren Trommel eine Wölbung in Form einer sich über die gesamte Länge des Trommelmantels erstreckenden Riffelung ausgebildet ist. Dabei ist die Trommellochung in den nach außen gerichteten Vertiefungen angeordnet. Dies führt dazu, dass in den ebenen Bereichen zwischen den Löchern Restwasser stehen bleibt und die Entwässerung verschlechtert. Außerdem wird durch eine solche Trommelstruktur die Wäsche sehr stark gerieben und hierdurch beschädigt. A washing machine is known from US Pat. No. 2,591,143, the drum of which has a curvature in Form of a corrugation extending over the entire length of the drum shell is. The perforated drum is arranged in the outwardly directed depressions. This leads to residual water in the flat areas between the holes stops and drainage deteriorates. In addition, such a drum structure the laundry is rubbed very hard and damaged as a result.
Bei den vorgenannten Trommeln hat es sich als nachteilig erwiesen, dass die relativ großen
Löcher bei Textilien zur Noppenbildung, zu Wäscheschäden und zum Durchtritt von Fäden und
Fremdkörpern führen. Es wurde deshalb bereits vorgeschlagen, den Lochdurchmesser zu
verringern (DE-OS 14 10 985) und/oder die Lochung auf Teilbereiche des Mantels zu begrenzen
(DE 28 26 506 A1).In the case of the aforementioned drums, it has proven disadvantageous that the relatively large ones
Holes in textiles for pimples, laundry damage and the passage of threads and
Lead foreign bodies. It has therefore already been proposed to increase the hole diameter
reduce (
Will man durchgestellte Löcher mit einem Durchmesser von 2 mm erreichen, so dürfen die Stanzwerkzeuge eine maximale Stärke von ca. 1,2 mm aufweisen. Dies würde bei den für Waschmaschinentrommeln verwendeten Blechstärken schnell zum Abbrechen der Werkzeuge führen. Aus diesem Grund ist es in einem automatisierten Fertigungsprozess nicht möglich, Waschmaschinentrommeln mit durchgestellten Löchern von 2 mm Durchmesser zu erzeugen.If you want to reach through holes with a diameter of 2 mm, you can Punching tools have a maximum thickness of approximately 1.2 mm. This would be the case for Washing machine drums quickly used sheet thicknesses to break off the tools to lead. For this reason it is not possible in an automated manufacturing process To produce washing machine drums with through holes of 2 mm in diameter.
Trommeln mit Lochdurchmessern um 2 mm, bei denen auf das Durchstellen verzichtet wird, besitzen deshalb eine relativ glatte Oberfläche, welcher die zuvor geschilderten optischen Eigenschaften fehlen. Das Gleiche gilt für Trommeln mit einer Lochung in Teilbereichen, da hier die ungelochten Mantelbereiche vollkommen glatt sind. Außerdem ist es bei solchen Trommeln nachteilig, dass auf der glatten Oberfläche Restwasser stehen bleibt und die Entwässerung verschlechtert.Drums with hole diameters of around 2 mm, which do not have to be put through, therefore have a relatively smooth surface, which has the optical properties described above absence. The same applies to drums with perforations in some areas, because here the unperforated jacket areas are completely smooth. It is also the case with such drums disadvantageous that residual water remains on the smooth surface and the drainage deteriorated.
Der Erfindung stellt sich somit das Problem, die Trommel einer Waschmaschine derart zu gestalten, dass gleichzeitig gute optische Eigenschaften und eine vollständige Entleerung des Restwassers erreicht werden.The invention thus presents the problem of designing the drum of a washing machine in such a way that that at the same time good optical properties and complete emptying of the Residual water can be reached.
Erfindungsgemäß wird dieses Problem durch eine Trommelwaschmaschine mit den Merkmalen des unabhängigen Patentanspruchs 1 gelöst. Vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung ergeben sich aus den nachfolgenden abhängigen Ansprüchen.According to the invention, this problem is solved by a drum washing machine with the features of independent claim 1 solved. Advantageous refinements and developments the invention result from the following dependent claims.
Die mit der Erfindung erreichbaren Vorteile bestehen neben der Lösung des vorgenannten Problems in einer Erhöhung der Stabilität der Trommel. Hierdurch können die Kosten, die beim Einsatz dicker Bleche oder aufwendiger Umformprozesse (z. B. Expandieren) entstehen, verringert werden. Alternativ dazu kann bei Beibehaltung der Blechstärken der Sicherheitsabstand zwischen Trommel und Laugenbehälter, der beim Schleudem die Berührung von Trommel und Laugenbehälter verhindern soll, verringert werden. Hierdurch reduziert sich das sogenannte Totvolumen zwischen Trommel- und Laugenbehältermantel, d. h. die freie Flotte wird reduziert (geringerer Wasser- und Energieverbrauch) und das Trommelvolumen kann vergrößert werden. Durch die Ausbildung der Wölbstruktur als zum Trommelinneren gerichtete Vielecken und die Anordnung der Löcher in ohne Wölbstruktur ausgebildeten Abschnitten ist die Lochung einfacher auszuführen, da sie nicht der Wölbstruktur angepasst werden muss. Die Löcher können in den an die Deckflächen (Kappe, Boden) angrenzenden Randbereichen oder im Mittelbereich des Mantels angeordnet sein. The advantages that can be achieved with the invention exist in addition to the solution of the aforementioned Problem in increasing the stability of the drum. This can reduce the cost of Use of thick sheets or complex forming processes (e.g. expanding) are reduced become. Alternatively, the safety distance can be maintained while maintaining the sheet thickness between the drum and the tub, which touches the drum and Prevent suds container should be reduced. This reduces the so-called Dead volume between drum and suds jacket, d. H. the free fleet is reduced (lower water and energy consumption) and the drum volume can be increased. Through the formation of the arch structure as polygons directed towards the inside of the drum and the The arrangement of the holes in sections without a curved structure is the perforation easier to carry out since it does not have to be adapted to the arch structure. The holes can in the border areas adjacent to the cover surfaces (cap, bottom) or in the Middle region of the jacket can be arranged.
Es ist weiterhin vorteilhaft, wenn die Löcher gegenüber denen herkömmlicher Trommelwaschmaschinen in der Anzahl und/oder im Durchmesser verringert sind. Hierdurch wird der Durchtritt von Flusen oder Fäden vermindert, wodurch die Wäsche stärker geschont wird.It is also advantageous if the holes are compared to those of conventional drum washing machines are reduced in number and / or in diameter. This is the passage reduced by fluff or threads, which is more gentle on the laundry.
Ausführungsbeispiele der Erfindung sind in den Zeichnungen rein schematisch dargestellt und werden nachfolgend näher beschrieben. Es zeigt
- Figur 1
- den allgemeinen Aufbau einer Trommelwaschmaschine
- Figur 2
- den Längsschnitt durch eine Trommel (3)
Figur 3- schematisch die Gestaltung der Wölbstruktur und der Lochung in einem Bereich des Trommelmantels (3.1)
- Figure 1
- the general structure of a drum washing machine
- Figure 2
- the longitudinal section through a drum (3)
- Figure 3
- schematic of the design of the arch structure and the perforation in an area of the drum casing (3.1)
Die erfindungsgemäß ausgebildete Trommelwaschmaschine (1) besitzt einen Laugenbehälter (2), in dem eine Trommel (3) zur Aufnahme von Wäsche (4) drehbar gelagert ist. Der Antrieb der Trommel (3) erfolgt durch einen Motor (13) über einen Keilriemen (13.1). Der Laugenbehälter (2) ist an Federn (5) schwingbeweglich im Gehäuse (6) aufgehängt und wird zur Dämpfung dieser Schwingungen im unteren Bereich durch Stoßdämpfer (7) gegenüber dem Gehäuseboden (8) abgestützt.The drum washing machine (1) designed according to the invention has a tub (2), in which a drum (3) for receiving laundry (4) is rotatably mounted. The drive the drum (3) is driven by a motor (13) via a V-belt (13.1). The tub (2) is swingably suspended on springs (5) in the housing (6) and becomes Damping of these vibrations in the lower area by shock absorbers (7) compared to Supported base (8).
Die zur Durchführung eines Waschprogramms benötigten Wasch-/Weichspülmittel werden dem Laugenbehälter (2) über eine Waschmitteleinspülkammer (9) mit angeschlossenem Verbindungsschlauch (10) zugeführt. Hierzu können die gewünschten Substanzen vom Benutzer in entsprechende Fächer (11) einer Waschmittelschublade (12) eingefüllt werden. Über einen in den Zeichnungen nicht dargestellten Wasserzulauf wird der gesamte Fachinhalt zu Beginn des jeweiligen Programmteils in den Laugenbehälter (2) eingespült.The detergent / fabric softener required to carry out a washing program will be the Suds container (2) via a detergent dispenser (9) with connected connecting hose (10) fed. To do this, the user can select the desired substances Corresponding compartments (11) of a detergent drawer (12) can be filled. About an in the water supply, not shown, the entire subject at the beginning of of the respective program part in the tub (2).
Zur Steuerung der verschiedenen Waschprogramme ist eine Mikroprozessor-Steuerung (MC) vorgesehen, die über Signalleitungen (14) mit verschiedenen Messgebem und den Bedienelementen verbunden ist. Sie gibt zeit- und zustandsabhängige Befehle über Steuerleitungen (15) an verschiedene Aktoren (Motoren, Ventile, Anzeigeelemente ...) weiter.A microprocessor control (MC) is used to control the different washing programs provided that via signal lines (14) with various transducers and the controls connected is. It issues time and status-dependent commands via control lines (15) to various actuators (motors, valves, display elements ...).
Die Trommel (3) wird in einem an anderer Stelle genauer beschriebenen automatischen Fertigungsverfahren (nicht dargestellt) hergestellt. Hierzu wird zunächst für den Trommelmantel (3.1) ein Blechstreifen von einem Coil abgeschnitten und durch Stanzen mit der gewünschten Lochung (16) versehen. Anschließend wird der Blechstreifen kreisförmig gebogen und die beiden zueinander weisenden Kanten verschweißt. Der so entstandene Zylinder wird durch bekannte Expandierverfahren mit formgebenden und stabilisierenden Konturen versehen. Anschließend wird durch ein aus der DE-OS 25 57 215 bekanntes Verfahren eine Wölbstruktur auf den Mantel gebracht. Danach erfolgt die Montage des Bodens (3.2) und der Kappe (3.3). The drum (3) is in an automatic manufacturing process described in more detail elsewhere (not shown). This is done first for the drum jacket (3.1) a sheet metal strip is cut from a coil and punched with the desired one Provide perforation (16). The sheet metal strip is then bent in a circle and welded the two mutually facing edges. The resulting cylinder is provided with shaping and stabilizing contours by known expansion processes. Then a vaulted structure is created by a method known from DE-OS 25 57 215 put on the coat. Then the floor (3.2) and the Cap (3.3).
Figur 3 zeigt einen Ausschnitt aus dem Trommelmantel (3.1) mit dem prinzipiellen Aufbau der Wölbstruktur und der erfindungsgemäßen Anordnung der Löcher (16):Figure 3 shows a section of the drum shell (3.1) with the basic structure of the Arch structure and the arrangement of the holes (16) according to the invention:
Der Mantel (3.1) ist in Abschnitten mit nach innen gewölbten Vielecken, vorzugsweise Sechsecken (17), versehen.The jacket (3.1) is preferably in sections with inwardly curved polygons Hexagons (17).
Die Anordnung der Löcher (16) wird bestimmt durch die Forderung nach raschem, rückstandsfreien Wasserablauf und gutem Textilentwässerungsgrad beim Schleudem mit Pumpen oder ausschließlichem Abpumpen, einer optimalen Wäscheschonung, geringer Fremdkörperempfindlichkeit und einer guten Optik.The arrangement of the holes (16) is determined by the requirement for rapid, residue-free Water drainage and good degree of textile drainage when skidding with pumps or only pumping, optimal laundry protection, low sensitivity to foreign bodies and good looks.
Lochreihen sind an den vorderen und hinteren Rändern (3.5) des Trommelmantels (3.1), die nicht gewölbt sind, angeordnet. Zusätzlich oder alternativ dazu sind weitere begrenzte, unstrukturierte Zonen (3.6) mit Löchern (16) möglich, beispielsweise wie in Figur 3 dargestellt, in der Mitte des Trommelmantels (3.1). Dabei können die wölbstrukturierten Bereiche vollkommen ungelocht sein, so dass die Struktur nur zur Festigung der Trommel (3) dient, es kann aber auch die weiter oben beschriebene Lochung (16) in den bevorzugten Stellen innerhalb der Wölbstruktur, z. B. den Eckpunkten (20) der Vielecke (17), vorgenommen werden.Rows of holes are on the front and rear edges (3.5) of the drum shell (3.1), the are not arched. Additionally or alternatively, there are more limited, unstructured ones Zones (3.6) with holes (16) possible, for example as shown in Figure 3, in the middle of the drum casing (3.1). The domed areas can be completely be unperforated so that the structure only serves to secure the drum (3), but it can also the perforation (16) described above in the preferred locations within the Vaulted structure, e.g. B. the corner points (20) of the polygons (17).
Der Durchmesser der Trommel (3) kann bei entsprechender Materialstärke und gleichbleibendem Laugenbehälterdurchmesser um bis zu 10 mm vergrößert werden, sofern dem nicht eine Wassermantelbildung beim Schleudern entgegensteht. Hierdurch kann der geringste Abstand zwischen Trommelmantel (3.1) und Laugenbehältermantel nur ca. 5 mm betragen.The diameter of the drum (3) can be the same if the material thickness is the same Tub diameter can be increased by up to 10 mm, if not one Prevents water jacket formation when spinning. This allows the smallest distance between the drum casing (3.1) and the tub container is only approx. 5 mm.
Es können Trommelmäntel (3.1) als Zylinder mit der Wölbstruktur versehen werden und vorher oder nachher einem weiteren Umformprozess (z. B. Expandieren) unterworfen werden. Genauso ist es möglich, mit Wölbstrukturen versehene fertige Platinen oder Coilmaterial (s. DE 44 37 986 A1) zu verarbeiten oder Platinen oder Coilmaterial in einem kontinuierlichen Fertigungsprozess mit den Wölbstrukturen zu versehen, vorher oder nachher zu lochen und weiteren Umformprozessen (z. b. Rollforming, Prägen, Pressen usw.) zu unterziehen, sowie zu einem Zylinder zu formen.Drum jackets (3.1) can be provided with the arch structure as cylinders and before or subsequently subjected to another forming process (e.g. expanding). Just like that it is possible to produce finished circuit boards or coil material with curved structures (see DE 44 37 986 A1) to process or circuit boards or coil material in a continuous To provide the manufacturing process with the arch structures, to punch before or after and undergo further forming processes (e.g. roll forming, embossing, pressing, etc.), as well as to shape a cylinder.
Die Überlegungen können sinngemäß auch auf den Boden und die Kappe übertragen werden.The considerations can also be applied analogously to the bottom and the cap.
Claims (5)
- Washing machine or washer-drier, having a drum (3), which is mounted in a washing liquid container (2) in a horizontal or inclined and rotatable manner, said drum being provided with a casing (3.1) and two top surfaces (3.2, 3.3), the casing (3.1) or one of the top surfaces (3.2, 3.3) being provided with a discharge aperture, and the casing being produced, at least partially, from a metal sheet which is provided, at least partially, with a curved structure orientated towards the drum interior, characterised in that the curved structure comprises polygons (17), which are orientated towards the drum interior, and in that holes (16) are disposed in portions (3.5; 3.6) of the casing (3.1) which do not have a curved structure.
- Drum-type washing machine (1) according to claim 1, characterised in that the holes (16) are disposed in at least one non-curved portion (3.5) of the casing (3.1), which portion abuts against the top surface.
- Drum-type washing machine (1) according to claim 2, characterised in that the holes (16) are disposed in a non-curved central region (3.6) of the casing (3.1).
- Drum-type washing machine according to at least one of claims 1 to 3, characterised in that the holes (16) have a diameter (d) of approx. 2 mm.
- Drum-type washing machine (1) according to claim 4, characterised in that the shortest spacing between the drum casing (3.1) and washing liquid container casing is approx. 5 mm.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19645273 | 1996-11-02 | ||
DE19645273 | 1996-11-02 | ||
EP97950062A EP0935687B1 (en) | 1996-11-02 | 1997-10-31 | Cylinder washing machine |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97950062A Division EP0935687B1 (en) | 1996-11-02 | 1997-10-31 | Cylinder washing machine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1118704A1 EP1118704A1 (en) | 2001-07-25 |
EP1118704B1 true EP1118704B1 (en) | 2003-07-02 |
Family
ID=7810520
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01105712A Expired - Lifetime EP1118704B1 (en) | 1996-11-02 | 1997-10-31 | Drum washing machine |
EP97950062A Expired - Lifetime EP0935687B1 (en) | 1996-11-02 | 1997-10-31 | Cylinder washing machine |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97950062A Expired - Lifetime EP0935687B1 (en) | 1996-11-02 | 1997-10-31 | Cylinder washing machine |
Country Status (7)
Country | Link |
---|---|
US (1) | US6334341B1 (en) |
EP (2) | EP1118704B1 (en) |
JP (1) | JP2001504006A (en) |
KR (1) | KR100393318B1 (en) |
DE (2) | DE59703826D1 (en) |
ES (2) | ES2159887T3 (en) |
WO (1) | WO1998020195A1 (en) |
Cited By (1)
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US8438883B2 (en) | 2007-02-28 | 2013-05-14 | Samsung Electronics Co., Ltd. | Washing machine improving washing efficiency |
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GB201002245D0 (en) | 2010-02-10 | 2010-03-31 | Xeros Ltd | Improved cleaning apparatus and method |
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CZ2010341A3 (en) * | 2010-05-03 | 2011-03-16 | Primus Ce S.R.O. | Washing machine drum |
DE102010029221A1 (en) | 2010-05-21 | 2011-11-24 | Meiko Maschinenbau Gmbh & Co. Kg | Apparatus for cleaning breathing apparatus |
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ES2558254T3 (en) | 2010-10-14 | 2016-02-02 | Alliance Laundry CE s.r.o | Drum for washing machine |
EP2474659B1 (en) | 2011-01-11 | 2013-01-09 | Miele & Cie. KG | Drum with curved structure for a washing machine |
EP2628839A1 (en) * | 2012-02-18 | 2013-08-21 | Samsung Electronics Co., Ltd | Washing machine |
JP5898598B2 (en) * | 2012-09-25 | 2016-04-06 | シャープ株式会社 | Washing machine |
KR101944366B1 (en) * | 2012-10-10 | 2019-02-07 | 삼성전자주식회사 | Washing Machine |
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DE102013201186A1 (en) * | 2013-01-25 | 2014-07-31 | BSH Bosch und Siemens Hausgeräte GmbH | Laundry drum for laundry treatment machine e.g. laundry machine, has intense stiffener for adjusting depth and size of embossments arranged in regions of mechanical loads of drum cladding towards longitudinal axis of drum cladding |
DE102014206637A1 (en) * | 2014-04-07 | 2015-10-08 | BSH Hausgeräte GmbH | A method for producing a drum base for a laundry drum of a household appliance, laundry drum and household appliance |
DE102015101456A1 (en) | 2015-02-02 | 2016-08-04 | Miele & Cie. Kg | Drum for a washing machine and washing machine |
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DE102019212775A1 (en) * | 2019-08-26 | 2021-03-04 | Meiko Maschinenbau Gmbh & Co. Kg | Cleaning basket for cleaning breathing apparatus |
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DE102020208471A1 (en) | 2020-07-07 | 2022-01-13 | Meiko Maschinenbau Gmbh & Co. Kg | Method and cleaning system for cleaning breathing apparatus |
DE102020208546A1 (en) | 2020-07-08 | 2022-01-13 | Meiko Maschinenbau Gmbh & Co. Kg | Cleaning basket for cleaning breathing apparatus |
DE102020210272A1 (en) | 2020-08-13 | 2022-02-17 | Meiko Maschinenbau Gmbh & Co. Kg | Cleaning device and method for cleaning items to be cleaned |
DE102021200987A1 (en) | 2021-02-03 | 2022-08-04 | BSH Hausgeräte GmbH | Method for producing a laundry drum with a precise positioning of an embossed structure and flood holes relative to one another, and laundry drum |
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GB1244974A (en) * | 1967-12-13 | 1971-09-02 | Linnhoff Ohg Wilhelm | Improvements in and relating to a drum for the electrolytic or chemical treatment of articles |
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-
1997
- 1997-10-31 DE DE59703826T patent/DE59703826D1/en not_active Expired - Lifetime
- 1997-10-31 ES ES97950062T patent/ES2159887T3/en not_active Expired - Lifetime
- 1997-10-31 EP EP01105712A patent/EP1118704B1/en not_active Expired - Lifetime
- 1997-10-31 ES ES01105712T patent/ES2195963T3/en not_active Expired - Lifetime
- 1997-10-31 DE DE59710390T patent/DE59710390D1/en not_active Expired - Lifetime
- 1997-10-31 JP JP52103498A patent/JP2001504006A/en not_active Ceased
- 1997-10-31 KR KR10-1999-7002251A patent/KR100393318B1/en active IP Right Grant
- 1997-10-31 EP EP97950062A patent/EP0935687B1/en not_active Expired - Lifetime
- 1997-10-31 US US09/297,550 patent/US6334341B1/en not_active Expired - Lifetime
- 1997-10-31 WO PCT/EP1997/006033 patent/WO1998020195A1/en active IP Right Grant
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8438883B2 (en) | 2007-02-28 | 2013-05-14 | Samsung Electronics Co., Ltd. | Washing machine improving washing efficiency |
Also Published As
Publication number | Publication date |
---|---|
EP0935687A1 (en) | 1999-08-18 |
JP2001504006A (en) | 2001-03-27 |
KR20000036196A (en) | 2000-06-26 |
DE59710390D1 (en) | 2003-08-07 |
ES2195963T3 (en) | 2003-12-16 |
ES2159887T3 (en) | 2001-10-16 |
WO1998020195A1 (en) | 1998-05-14 |
DE59703826D1 (en) | 2001-07-19 |
EP0935687B1 (en) | 2001-06-13 |
KR100393318B1 (en) | 2003-08-02 |
US6334341B1 (en) | 2002-01-01 |
EP1118704A1 (en) | 2001-07-25 |
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