EP0662168A1 - Waschmaschine. - Google Patents
Waschmaschine.Info
- Publication number
- EP0662168A1 EP0662168A1 EP94900111A EP94900111A EP0662168A1 EP 0662168 A1 EP0662168 A1 EP 0662168A1 EP 94900111 A EP94900111 A EP 94900111A EP 94900111 A EP94900111 A EP 94900111A EP 0662168 A1 EP0662168 A1 EP 0662168A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- washing machine
- drum
- steering
- machine according
- drive
- 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.)
- Granted
Links
Classifications
-
- 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
- D06F31/00—Washing installations comprising an assembly of several washing machines or washing units, e.g. continuous flow assemblies
- D06F31/005—Washing installations comprising an assembly of several washing machines or washing units, e.g. continuous flow assemblies consisting of one or more rotating drums through which the laundry passes in a continuous flow
Definitions
- the invention relates to a washing machine with at least one drum rotatably arranged about an axis of rotation and with bearing devices which together serve to absorb the forces occurring axially and radially due to the movement of the drum.
- washing machines (US 45 22 046, AT 335 956 and DE-OS 30 27 382) have long been available on the market as lot washing machines, for example, and are operated in the so-called single, double or tandem mode.
- These known washing machines which are used in particular in large laundries and in the hospital for handling large amounts of laundry, have a plurality of rotatable drums arranged in a row one after the other, which are divided into individual sections for soaking, pre-washing, main washing and rinsing serve the laundry.
- a rotation of the drum by 360 ° is necessary, the laundry item being moved into the next drum by slipping; otherwise the drums are either at a standstill or are pivoted back and forth.
- several drums can form a section.
- All drums are firmly connected to one another and can be pivoted or rotated about a common axis of rotation.
- the individual drums have elastic walls in the form of so-called membrane walls on the end face and towards the loading side, which serve to absorb the loads which result from the fact that the individual drum axes do not match the actual ones due to inaccuracies when assembling the machine Axis of rotation coincide.
- AT-PS 335 956 discloses a steering stool which can be rotated about a pivot axis and which has two U rollers on the end which are provided with pinions and which rotate the washing drum from the articulation point of the steering stool by means of a drive.
- This steering stool unit for driving the drum does not assume a storage or support function, but rather is intended to drive only individual drum segments of the overall drum system independently of one another.
- the invention has for its object to provide a washing machine in which the disadvantages described above do not occur.
- a go- de Task solves a washing machine with the features of claim 1.
- the bearing devices in a washing machine at least some of the bearing devices have a steering stool rotatable about a pivot axis with at least one circulating roller, which is provided with a tilting direction for a tilting movement transverse to its pivot axis, or in that the steering bolster has another UmlaufroI ⁇ Ie, whose axis of rotation extends transversely to the axis of rotation of the other UmlaufroIIe of the steering bolster, the additional forces occurring when moving the respective drum, which are caused by a tumbling process of the drum, are safely and easily absorbed.
- the membrane or elastically flexible wall in question can be dispensed with in the case of a drum, because even the wobbling that occurs increasingly with rigid drum walls is caused by the invention ⁇ appropriate storage device safely added. Even when the washing machine is in a high load condition, there is no longer any failure due to the storage devices.
- the washing machine according to the invention is therefore safe to operate and time-consuming and costly maintenance work is either omitted completely or is only necessary at longer intervals.
- the tilting device has a pivot pin which extends through the center of the steering bolster and at least partially has a free end at its free end. has a larger diameter than that of an associated sleeve of the steering stool. Because of this configuration, the steering stool only tilts when it is subjected to a corresponding force from the side of the drum due to the wobbling process. The further bearing points in the form of idler rollers of the respective steering bolster are relieved by this arrangement, which extends their service life.
- the pivot pin preferably has inclined, in particular crowned, contact surfaces along which the tilting movement of the steering stool takes place transversely to its pivot axis.
- the circulating roller arranged centrally on the steering stool is brought into contact with a rolling surface arranged on the end face of the drum.
- Optimal load and force absorption results if at least one bearing device is present between each drum.
- each bearing device is connected to a central frame which at least partially encompasses the respective drum and which has two continuous longitudinal bars on both sides, to which the bearing devices engaging between the individual drums are articulated as part of at least one rocker arm .
- the bearing devices arranged on the loading and unloading side with the two longitudinal spars of the central frame and all the bearing devices are preferably also connected via elastic see connecting means connected to the central frame.
- the latter allows mechanical decoupling of the metallic components from bearing devices with central frames, which has good damping properties which, on the one hand, reduce the noise level during operation of the washing machine and, on the other hand, keep the wear on the parts that can be moved relative to one another low.
- the circulating roller arranged at the end on the steering stool rolls along a toothed ring on its loading and unloading side, which cooperates with a drive for rotating the respective drum.
- the drive torque can be supported in an essentially vertical plane via the steering bolster, so that the bearing devices are prevented from stressing bending moments, as is the case when the drive force is introduced outside this plane.
- the drive preferably has two drive axes, which are arranged parallel and laterally to the axis of rotation of the respective drum and run in a horizontal plane with the same.
- each drive has only one drive belt, which is in engagement with the toothed ring of the associated drum between the drive axes.
- the service life for the respective drive belt is increased by means of at least one tensioning device, which has a damping, and an energy store, which holds abutment wheels pivotably arranged via a lever linkage in contact with the drive belt.
- Fig.l in a simplified, schematic representation, a side view of the washing machine according to the invention.
- FIG. 2 shows the end view of the washing machine according to FIG. 1 seen from the loading or unloading side;
- 3a, 3b show a longitudinal section or a top view of a steering stool, as shown in FIG. 2 seen at the top right;
- 4a, 4b a longitudinal section or a top view of a steering stool, as shown in FIG. 2, shown at the bottom right;
- FIG. 5 shows an end view of a drum, namely as it results between the individual drums of the washing machine
- FIG. 6 shows the top view of a steering stool as shown in FIG. 5 seen at the bottom right;
- the washing machine according to FIG. 1 has three drums 10 arranged one behind the other. These can be of different widths to form sections of different lengths, and in particular two or more drums 10 shown in FIG. 1 can result in a drum connected directly to one another. All drums 10 can be moved together about an axis of rotation 12 and at the same time and in the same direction of rotation.
- the drums 10 are interconnected by means of cylindrical connecting pieces 14 and are open to the environment. For further transport of the respective item of laundry into the next drum 10 there are slides 16 which enable further transport when the drums 10 are fully rotated.
- the drums 10 are surrounded by a stationary housing 18, which prevents unwanted leakage of detergent and / or water into the environment. To stand up the washing machine, it is mounted in a central frame 20, which is shown in Fig.l only in principle.
- the drums 10 of the washing machine are rotatably mounted via the connecting pieces 14 by means of bearing devices 22, the bearing devices 22 being arranged at the end on the loading side 24 and the unloading side 26 and between the individual drums 10.
- the drums 10 can furthermore be provided on the loading side with a flexible end wall and on the unloading side with a rigid end wall 28 or 30.
- the bearing device 22 is designed as a fixed bearing on the loading side 24 and as a floating bearing on the loading side 26.
- Each bearing device 22 has at least one pivotable steering stool 32, which has at least one of its free ends a circulating roller 34 which interacts directly with parts of the respective drum 10 or with the drum 10 during their movement. As shown in FIG.
- steering bolsters 32 are arranged diametrically to the axis of rotation 12 on the loading side 24 and the unloading side 26 of the washing machine and between the individual troughs. my 10 each two steering bolsters 32. At the beginning and end of the washing machine, that is to say on the loading side 24 and the unloading side 26, the steering bolsters 32 are pivotally mounted on so-called burning parts 36, which in a material-saving manner form plates which form with the central frame 20 are connected.
- the pair of steering bolsters 32 shown in the upper half of FIG. 2 differs from the steering bolster pair 32 shown below, which has two idler rollers 34 for each steering bolster 32.
- the two lower steering bolsters 32 can be designed in a simplified manner. This simplified interpretation can be seen in particular in FIGS. 4a and 4b.
- the lower steering stool 32 shown there has a sleeve 38, in which a pivot 42 is guided over one or more bushings 40 and is fixedly connected to the plate 36 via a screw connection 44.
- the rotating roller 34 is rotatably arranged, the rotatably mounted outer ring 46 of which has a concave curvature which is in contact with a convex ring of a ring gear 48.
- the other free end of the steering arm 32 is penetrated by an adjusting screw 50, which enables the position of the steering arm 32 relative to the plate 36 via a spacer sleeve 52.
- the play between the sleeve 38 can optionally be specified via one of the bushes 40 with a snap ring 54 arranged at the free end of the pivot, the game being brought to zero in order to achieve the mentioned fixed bearing, so that the Steering stool 32 is no longer axially displaceable relative to the fixed plate 36, but is only held pivotably about the pivot 42.
- a spacer ring 56 can also be provided between the bush 40 and the snap ring 54, which is eliminated if one wishes to achieve a loose bearing, as is provided on the loading side 26 of the washing machine.
- the respectively assigned roller 34 can be set against the spherical running surface of the toothed ring 48 without play according to the circumstances. With increasing wear on the upper rollers 34, the freedom from play can be maintained automatically via the spring 55 (FIG. 4b) of the adjusting screw 53.
- the upper steering bolsters 32 are formed with the proviso that the pivot 42 is axially free of play as well as in contact with the sleeve 38 as in the described embodiment according to Figures 4a and 4b.
- the illustration in FIGS. 3a and 3b relates to the storage provided for the discharge side 26.
- the pivot pin 42 penetrating through the center of the steering mechanism 32 has a smaller diameter than the inside diameter of the associated sleeve 38.
- the diameter of the pivot pin 42 can, as shown in particular in FIG. 3b, be such that the cross-section transverse to the direction of travel of the drum 10 is in contact with the inner diameter of the sleeve 38 and is otherwise not.
- wobbling movements of the drum arrangement can be safely absorbed and controlled on the side of the floating bearing. Supports the mentioned tilting movement of the steering guide 32 is still in 'that the Pivot 42 has inclined, in particular crowned, contact surfaces 58.
- the respective steering bolsters 32 have a further circulation roller 60 in the middle, the axis of rotation of which runs perpendicular to the axis of rotation of the respective other circulation roller 34 of the Le ⁇ ksche els 32 and is arranged in contact with one on the drum 10 at the end Rolling surface 62 can be brought.
- This can be formed from a rigid end wall 30 in each case.
- the rolling surface 62 is formed from two ring surfaces which run centrally around the respective connecting piece 14 and which can be brought into contact with the outer peripheral surface 64 of the circulating roller 60.
- two steering bolsters 32 arranged in the lower half of the drums 10 support the drum 10 via the connecting piece 14, which is fixedly connected to the end faces 28 and 30 of the drums 10 at this point.
- the respective steering bolster is pivotally pivoted about the cylindrical pivot 42 to a carrier 66 which is fixedly connected to a crossbar 68 which forms a type of rocker arm with two pivoting upwardly extending link carriers 70.
- the rocker 66, 68, 70 is connected to two longitudinal bars 74 of the central frame 20 via an elastic connecting means in the form of rubber bushings 72. This ensures vibration-free running of the rotating rollers 34 and 60.
- each rubber bushing 72 which is encompassed by the link carrier 70 of the rocker, is held by means of two eyebolts 76 which hold the
- bushing 72 has disc springs 78 at the end and is for
- the bearing devices 22 arranged on the loading side 24 and the unloading side 26 are likewise connected to the two longitudinal bars 74 of the central frame 20 via the plates 36.
- the bearing devices 22 are connected to the central frame 20 via elastic connecting means in the form of rubber bushings 72.
- the rotating rollers 34 which are respectively arranged on the ends of the steering bolsters 32, roll along a ring gear 48, which cooperates with a drive 84 for rotating the respective drum 10.
- This drive 84 has two drive axes 86, which are arranged parallel and laterally to the axis of rotation 12 of the respective drum 10 and extend in a horizontal plane 88 with the same.
- the electric drive motors belonging to the drive axles 86 have been omitted for the sake of simplicity and better illustration. Rather, FIG. 2 shows the drive pinions 90, which are mounted rotatably about the respective drive axis 86 within the plates 36 assigned to them.
- Each of the two drives 84 arranged at the ends has a drive belt 92 which engages with the toothed ring 48 of the associated drum 10 between the drive axles 86.
- the drive belt 92 is guided around the two drive pinions 90 and, as a toothed belt, engages with the teeth of the toothed ring 48, which has a Intermediate wall 94 is fixedly connected to the connecting piece 14 and thus to the drum 10 assigned to it.
- the ring gear 48 has two rows of teeth lying next to one another (see FIG. 3a).
- the drive according to the invention can also have a ring gear with only one row of teeth.
- each tensioning device 96 which is mounted in the plate 36, has an energy accumulator in the form of an adjustable compression spring 102, which, via a lever linkage 104, holds contact wheels in the form of double toothed wheels 106 pivotably arranged in contact with the drive belt 92 (see FIG. 8 ).
- the lever linkage 104 has two levers 108 which are pivotally mounted in the base plate 36 at one end via a rotary bushing 110 and which have the contact wheels 106 at their other end.
- the contact wheels 106 are also rotatably supported in support forks 112, the lower support fork 112 seen in FIG. 8 being supported on the spring 102, which in turn is supported on a curved plate profile 114 which laterally comprises both opposite contact wheels 106 and via the pretension the elastically resilient spring 102 also determines the spacing of the contact wheels 106 from one another.
- the elastic end walls 28 can also be dispensed with; rather, like the end walls 30 arranged on the unloading side, they can consist of an unyielding material. The under certain circumstances, wobbling movements of the individual drums 10, which are increasingly occurring, can then still be safely absorbed with the bearing devices according to the invention.
- the respective steering bolster according to the preceding figures is essentially formed from a flat plate which has curves at the end, the radius of curvature of which corresponds to the radius of curvature of the idler rollers 34.
- These flat steering bolster plates can also have a kink at the location of the pivot axis, so that the pivot axis of the steering bolster is arranged in offset planes with respect to the axes of rotation of the idler rollers 34.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4238358A DE4238358A1 (de) | 1992-11-13 | 1992-11-13 | Waschmaschine |
DE4238358 | 1992-11-13 | ||
PCT/EP1993/003116 WO1994011561A1 (de) | 1992-11-13 | 1993-11-08 | Waschmaschine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0662168A1 true EP0662168A1 (de) | 1995-07-12 |
EP0662168B1 EP0662168B1 (de) | 1996-06-12 |
Family
ID=6472815
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP94900111A Expired - Lifetime EP0662168B1 (de) | 1992-11-13 | 1993-11-08 | Waschmaschine |
Country Status (6)
Country | Link |
---|---|
US (1) | US5564292A (de) |
EP (1) | EP0662168B1 (de) |
JP (1) | JPH08503146A (de) |
DE (2) | DE4238358A1 (de) |
ES (1) | ES2087806T3 (de) |
WO (1) | WO1994011561A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19943495A1 (de) * | 1999-09-10 | 2001-03-15 | Pharmagg Systemtechnik Gmbh | Vorrichtung zum Waschen von Wäschestücken |
DE10056358A1 (de) * | 2000-11-14 | 2002-05-23 | Pharmagg Systemtechnik Gmbh | Vorrichtung zur Nassbehandlung von Wäsche und Dichtung für eine derartige Vorrichtung |
EP3458637B1 (de) * | 2016-05-20 | 2022-06-22 | Pellerin Milnor Corporation | Verfahren zum waschen von gewebeartikeln in einer kontinuierlichen tunneldurchlaufwaschanlage |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US694565A (en) * | 1899-10-25 | 1902-03-04 | Taylor Iron And Steel Co | Revolving screen. |
US2269700A (en) * | 1940-05-20 | 1942-01-13 | Monolith Portland Cement Compa | Kiln supporting means |
US2884287A (en) * | 1956-02-27 | 1959-04-28 | Holderbank Cement | Support arrangement |
NL272767A (de) * | 1961-03-02 | |||
FR2277176A1 (fr) * | 1974-07-04 | 1976-01-30 | Bhavsar Guy | Machine pour le traitement du linge, plus particulierement machine a laver le linge |
DE7441076U (de) * | 1974-12-10 | 1975-10-09 | Engelhardt & Foerster | Du rchlauf waschmaschine |
US4236393A (en) * | 1979-07-19 | 1980-12-02 | Pellerin Milnor Corporation | Continuous tunnel batch washer |
US4522046A (en) * | 1983-11-03 | 1985-06-11 | Washex Machinery Corporation | Continuous batch laundry system |
DE3607119A1 (de) * | 1986-03-05 | 1987-09-17 | Kleindienst Gmbh | Postenwaschmaschine |
DE3631867C2 (de) * | 1986-09-19 | 1996-02-08 | Transferon Waeschereimasch | Postendurchlaufwaschmaschine |
US5211039A (en) * | 1991-03-12 | 1993-05-18 | Pellerin Milnor Corporation | Continuous batch type washing machine |
-
1992
- 1992-11-13 DE DE4238358A patent/DE4238358A1/de not_active Withdrawn
-
1993
- 1993-11-08 US US08/313,158 patent/US5564292A/en not_active Expired - Fee Related
- 1993-11-08 WO PCT/EP1993/003116 patent/WO1994011561A1/de active IP Right Grant
- 1993-11-08 EP EP94900111A patent/EP0662168B1/de not_active Expired - Lifetime
- 1993-11-08 JP JP6511691A patent/JPH08503146A/ja active Pending
- 1993-11-08 DE DE59302944T patent/DE59302944D1/de not_active Expired - Fee Related
- 1993-11-08 ES ES94900111T patent/ES2087806T3/es not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO9411561A1 * |
Also Published As
Publication number | Publication date |
---|---|
ES2087806T3 (es) | 1996-07-16 |
WO1994011561A1 (de) | 1994-05-26 |
JPH08503146A (ja) | 1996-04-09 |
DE59302944D1 (de) | 1996-07-18 |
EP0662168B1 (de) | 1996-06-12 |
DE4238358A1 (de) | 1994-05-19 |
US5564292A (en) | 1996-10-15 |
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