DE29708914U1 - Washing drum for a washing machine - Google Patents

Description

20; 05.1997

'■ ' ■ 1-

AEG Hausgeräte GmbH, D-90429 Nuremberg

Description

Washing drum for a washing machine .

The innovation concerns a washing drum for a washing machine, the cylindrical casing of which is provided with a large number of flow holes for the passage of the working fluid.

Washing drums of the type in question consist of a cylindrical casing which is usually provided with a large number of perforated holes through which the working fluid can penetrate from the tub into the interior of the washing drum during the washing process and through which the working fluid then exits again during the spinning process.

Based on this state of the art, the innovation is based on the task of using simple technical measures to improve the supply of the working fluid to the items being washed via the flow holes.

The solution to this problem according to the innovation can be found in the characterizing part of protection claim 1. ■

20.05.1997

Advantageous further embodiments of the subject matter of the innovation are specified in the subclaims . ''■■

The advantages that can be achieved with the innovation include the fact that additional water or lye from the sump area of the lye container is collected via the specially designed flow holes and is transported upwards when the washing drum rotates and from there is fed to the laundry. This results in significantly improved wetting of the laundry in the shortest possible time and also better utilization of the laundry treatment agents in the sump area. Another advantage is that the flow holes according to the innovation hold back smaller foreign objects, e.g. pins, and can therefore no longer get into the rubber-like lye drainage bellows of the lye container drainage system. The risk of damage to this lye drainage bellows is thus significantly reduced.

Two advantageous embodiments of the innovation are shown in the drawing and are described in more detail below. ■ . .

Show: '- ■ _f . ■

Fig. 1 shows a washing drum in overall view.

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• 20.05.1997

Fig. 2 ·. a section through the washing drum shell,' j

Fig. 3 a section of the washing drum shell,

Fig. 4 and 6 each show an enlarged view of a washing drum flow hole,

Fig. 5 and 7 each show a section through the flow hole j

according to Fig. 4 or 6. ■ '

The washing drum 1, which can be rotatably mounted in the suds container (not shown) of a washing machine, has a cylindrical casing 2, which is provided in the usual way with a large number of flow holes 3 (perforations). During the washing process, the working liquid (washing, .' or rinsing liquor) passes through these flow holes from the suds container into the washing drum.

interior and wets the laundry there. During the spinning process, the liquid passes over

the flow holes 3 again and is removed from the. }

Bottom area (so-called sump area) of the lye container,

pumped out in a conventional manner. ' ,

In order to increase the collection or conveyance of working fluid, especially from the so-called sump area of the suds container to the laundry via the washing drum flow holes 3, the flow holes 3 are expediently provided with scooping devices 4 or 5 projecting from the drum shell 2 in ■ /■'■

Ku/Ve 20.05.1997

The washing drum 1 is provided with scoops or the like. These scoop-like scooping devices 4, 5 are formed by only partially punching out the flow holes 3 and then bending the punched-out holes up to a certain angle. In a further development of the invention, the scooping devices 5 (Fig. 6 and 7) are expediently designed as scoops. In order to take into account the change in the direction of rotation (reversing operation) of the washing drum 1 during the washing process, the scoop-like scooping devices 4, 4' of the flow holes 3 are aligned partly in one direction of rotation and partly in the other direction of rotation according to Fig. 3.

The proposed design of the flow holes 3 in the washing drum casing 2 increases the amount of working fluid from the sump area of the suds container being transported upwards and brought to the laundry items when the active washing drum 2 rotates. The detergent that often settles in the area mentioned is thereby very strongly stirred up, which significantly improves its utilization. The proposed design of the flow holes 3 also has the advantage that the smallest foreign bodies, e.g. needles, are held back and thus cannot get into the rubber-like bellows of the suds drainage system. The achieved improvement in the wetting of the laundry items means that their saturation level is reached more quickly, thus shortening the overall washing time.

Claims (1)

t ::..:: .· wa-199-7/0-5&bgr; ' ·' . : 20.05.1997 . , .·■ '■.■■-'. ⁵ • AEG Household Appliances GmbH D-90429 Nuremberg. Protection claims 1. Washing drum (1) for a washing machine, the cylindrical casing (2) of which is provided with a plurality of flow holes (3) for the passage of working fluid, characterized in that the flow holes (3) are provided with scooping devices (4, 5) protruding from the drum casing (2). 2. Washing drum according to claim 1, characterized in that the scooping devices (4, 5) are designed in the form of scoops or the like. 3. Washing drum according to claim 1, characterized in that the scooping devices (5) are designed as scoops. 4. Washing drum according to claim 1 or one of the following, characterized in that the scooping devices (4, 4') of the flow holes (3) are aligned partly in one and partly in the other direction of rotation of the laundry drum (1)' (Fig. 2 and 3). 5. Washing drum according to claim 1 or one of the following, characterized in that the scooping devices (4, 5) are formed by partially punching out the flow holes (3) and .&iacgr;&idiagr;. .J. ^# ..* ..." .·* &iacgr; Ku/Ve 20.05.1997 subsequent opening or bending of these are produced. . · ■■, ■ &igr;