DE1921019U - HOUSEHOLD WASHING MACHINE WITH SCREEN DEVICE IN THE DRAIN PIPE. - Google Patents

Description

RA.30? 62G * 29.t2.6ii

COFSTRUCTA-WERKE GMBH Munich, on

Oskar-von-Miller-Ring 18

64/5545

Household washing machine with a sieve device arranged in the drain line

The innovation relates to a household washing machine with a sieve device arranged in the drain line.

It is known, in the drain line of household washing machines between the tub and the drain pump, a sieve device for Provide for the collection of coarse impurities. This is to protect the drain pump from damage.

Such screening devices have the disadvantage that they are very clog quickly. Therefore, they must be emptied and cleaned at regular intervals by the operator of the machine. However, this is the case with the sieve device of a household washing machine, which is mostly operated by people inexperienced in technical matters, does not guarantee!

- 1 - December 21, 1964

Hs / Se

PVA 64/5545

A filter device in a household laundry machine that is clogged with lint can have extremely detrimental effects both on the washing result and on the service life of the machine. In particular in the case of an automatic washing and spinning machine, the operations of which are time-controlled by means of an automatic program sequence, only a certain period of time is provided for each pumping process. It can therefore happen that the draining time increases when the sieve device is clogged, so that dirty liquor remains in the machine after the time provided for the draining process has elapsed. This dirty liquor is then carried over to the following wash or rinse cycle and affects the washing result. If the dirty liquor remains in the machine for a long time, it can also lead to damage, for example to corrosion on built-in parts of the machine. In automatic washing machines in which the liquor is pumped out with the spin cycle starting, the spin motor can be overloaded by the washing liquid in the tub if the pumping process is delayed. This can damage the motor winding.

A sieve device has already become known in dishwashers, which avoids the clogging of the collecting sieve. The trough-shaped recess in the lower part of the washing compartment is concentric in two by a frustoconical screen body

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lying to each other. Divided chambers. The outer chamber pteht with a wash liquor circulation pump and the inner one with the drainage

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pump and the rinsing tank in connection. During the emergency operation the washing liquid flows from the washing compartment through the inner chamber and the strainer body into the outer chamber and becomes

fed from the wash liquor circulation pump to the spray devices.

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PYA 64/5545

Coarse soiling of the flushing pad in the inner chamber remains on the strainer body. After switching off the Rinsing liquor circulating pump collects the rinsing liquor on the previously described one Paths in the outer chamber and flows through the screen body in the opposite direction when the drain pump is switched on from the outer to the inner chamber. The return flow ensures that the aforementioned lumpy dirt be detached from the screen body. Such a self-cleaning sieve device can not be used in household washing machines Use because the latter machines use the plotting is not constantly pumped around or circulated.

The object of the innovation is to create a device which can be used even if the screen device is poorly maintained a washer-extractor that is completely clogged with lint or the like. prevented. The underlying task of the furnace is achieved in that between the screening device and the Drain pump the fresh water supply line is connected to the drain line. Another feature of the furnace is that Fresh water supply line below the lint filter on the filter device connected.

The new spatial shape ensures that the lint filter goes against the drain every time the machine takes up fresh water direction is flushed. It is thus avoided over a long period of operation that a dense, felt-like lint coating builds up can form on the sieve device, which delays the discharge of the liquor.

An exemplary embodiment of the innovation is shown schematically in the drawing shown.

PYA 64/5545

The drain opening 1 is at the lowest point of the tub 2 of the washer-extractor. A sieve device 5 for collecting foreign bodies is located under the drainage opening and pluses attached. The sieve device is detachable with a Lid 4 closed. Below the lint filter 5 is on the filter device via a pipe or hose line 6 Drain pump 7 connected. Via the line branch 8 connected to the filter device below the lint filter, the Splash water supply to the suds container 2. During the drainage process the washing liquid flows in the direction of arrow 9 through the lint filter 5> where coarse soiling, such as lint or foreign bodies, be retained by the lint filter. When filling the In the tub with fresh water, the fresh water emerging from the branch line 8 flows through the lint filter in the direction of the arrow 10, whereby the laundry fluff that has accumulated in the fluff filter during the draining process is loosened and partly also in the tub be washed up. In this way, the lint filter can largely be kept free of lint for the start of the following drainage process will.

1 figure

2 claims for protection

Claims (2)

PYA 64/5545! Protection claims 1. Household washing machine with in the drain line between the tub and drain pump arranged sieve device, characterized in that between the Sieve device and the drain pump the fresh water supply is connected to the drain line. 2. Household washing machine according to claim 1, characterized ge ~ Indicates that the fresh water supply line is connected to the sieve device below the fluff filter