DE6604839U - DRAINAGE CHUTE IN DISHWASHING MACHINES. - Google Patents

Description

G. Baulmeciit GmbH., 7 Stuttgart S, Heidenklinge

Drainage shaft in dishwashers

The innovation relates to one in the lower area of the interior of dishwashers arranged drainage shaft, from which a drainage line and a line to the circulating pump exits, the downcomer between its and the Drain line connected area and its area connected to the circulation pump a partition and the area of the downcomer connected to the circulation pump preferably is covered by a sieve and a level control device associated with the drain line Area communicates.

It is e.g. from the German patent specification 1 128 094 and the US patent specification 1 382 74-2, 1,384-930 and 3,129,711 known in dishwashers Provide drainage shafts through

Partition walls, cylindrical inserts or the like. Are divided, from a region of the downcomer the liquid is sucked off to the circulation pump, while from the other area the Liquid is fed to the drainage line * The area of the drainage shaft assigned to the circulation pump is generally covered with a fine sieve, while in connection with the drain standing area of the downcomer through a so-called coarse sieve against the ingress of coarse Food leftovers can be protected. In dishwashers with a level control device is connected to the drainage shaft or the drainage pipe near the drainage shaft, The turbulence that occurs in the downcomer during the circulation process often has a disruptive effect the level control device.

The task of the innovation is to create a drainage shaft for dishwashers, in which there is turbulence in the washing liquid during the circulation process is largely avoided. On the other hand, however, the one with the circulation pump in Connected area of the drainage shaft that can be covered by a fine sieve, in connection with the drainage line during the drainage process stand for quick and trouble-free removal of the used rinsing liquid from the machine to enable.

This object is achieved according to the invention in that in the partition wall arranged in the downcomer

<?> is a non-return valve that opens in the direction of the drain line is arranged.

The non-return valve is during the circulation process closed, so that the liquid in the area of the drainage shaft connected to the drain stands still and no pressure fluctuations caused by turbulence interfering with the level control device can act. During the process, the newly arranged one opens Non-return valve, so that the used flushing liquid both from the directly to the drain line connected area of the drainage shaft as well as from the covered by a fine sieve and with the circulation pump connected area can flow away.

The non-return valve arranged in the partition can be made of rubber or an elastic plastic exist, so that the flap is elastic in itself and the arrangement of a hinge or the like. unnecessary. In a preferred embodiment of the innovation, the non-return valve with its Stop frame can be formed from a single workpiece made of rubber or the like. the Partition wall can have an opening corresponding to the shape of the stop frame and the An impact frame can be inserted into this opening in a simple manner. The check valve can also be designed as a simple flat rubber or plastic piece, which one in the Partition located opening protrudes on all sides and above this opening on the partition is attached. Non-return flaps made of rubber

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or the like. Relatively soft material have the advantage that they work noiselessly with practically wear-free operation.

In the drawing, exemplary embodiments of the innovation are shown.

Here shows:

Fig. 1 is a section through the lower part of a dishwasher and

2 shows a downcomer on an enlarged scale Scale.

In detail, FIG. 1 shows a dishwasher 1, the inner container 2 of which merges into the downcomer 3 in its lower region. The area 4 of the drainage shaft 3 stands with • the circulation pump 5 iö- connection, while to the Area 6 the drain line 7 is connected. The areas 4 and 6 of the drain shaft 3 are separated from one another by the partition 8 and in the lower part of the partition 8 is a non-return valve 9 arranged, which opens in the direction of the drain line 7 out. Kit the one with the drain line 7 related area 6 of the Drainage shaft communicates with a level control device 10. The area 4- connected to the circulation pump 5 is through a fine sieve 11, the area covered by a coarse sieve 12.

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Fig. 2 shows a downcomer 3 on an enlarged scale in longitudinal section. The pipeline 15 opening in the area 4 of the discharge shaft 3 leads to a circulating pump. At the top, the area 4 is covered by the straining sieve 11. The non-return valve 9 in the partition is a simple elastic part ana n * o "H" i ~ \ r \ o * h wnl ^ "V ^ o α ^ τ_3 iL *" * ^ ^ÖT1 Φ τ * ούι internal r *; / ·! Ή ο f * * 5 v * A ₌ borrowed opening covered. The drainage line 7 opens in the lower part of the area 6. A level control device can be connected to the drainage line 7, but is not shown in the drawing.

- Protection claims -

Claims (1)

. Ab1a a £ shaft arranged in the lower area of the interior of dishwashers, from which a drainage line and a line to the circulating pump extend, the drainage shaft being a partition between its area connected to the drainage line and its area connected to the circulating pump, and the The area of the drainage shaft connected to the circulating pump is preferably covered by a sieve and a level control device is connected to the area assigned to the drainage line, characterized in that in the separating edge (8) a non-return valve (9) opening in the direction of the drainage line (7) is arranged. 2. Drainage shaft according to claim 1, characterized in that that the check valve (9) is made of rubber or elastic plastic. 5. Drainage shaft according to claim 2, characterized in that that the check valve (9) with its stop frame consists of one piece and in one corresponding opening of the partition (8) can be used. 4 ·. Drainage shaft according to claim 2, characterized in that that the non-return valve (9) covers an opening in the partition (8) and above it this opening is attached to the partition (8). November 21, 1969/738 6694839