DD150357A1 - DEVICE FOR PREVENTING DETERGENT LOSSES IN WASHING MACHINES AND DISHWASHERS - Google Patents

Abstract

The invention. relates to a Ablusverschluszeinrichtg., Especially for Haushaltsgroszgeraete such as washing machines and dishwashers, which is closed by a buoyant body, the drain. The invention should be excluded with minimal effort and without any mutual influence from the program existing Einspuelsystemen and Abfluszabsperreinrichtungen in all commercial washing and care products, the losses during rinsing in the tub and the prescribed alkali concentration guaranteed. According to the invention, this is achieved by a buoyant body being able to move in a guide in two degrees of freedom, the opening and closing of the tub opening being due to the suction produced when the drain pump is put into operation and secondly to the buoyancy of the buoyant body when the fresh water enters the drainage Lye container is guaranteed. Application: drum washing machines, centrifuges.

Description

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Title of the invention . , '

Device for preventing detergent losses in washing machines and dishwashers

Field of application of the invention

The invention relates to a Abflußverschließeinrichtung, especially for household large appliances, such as washing machines and dishwashers, which is closed by a float drainage

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Characteristic of the Technical Solutions Known Up to Now Conventional solutions of the drainage systems have the disadvantage that, after the washing and care products have been flushed into the tub, no suitable devices are present for the losses of solid or liquid washing and care agents excluded. This means a reduction of the wash liquor concentration and thus a worsening of the wash results.

All known designs have the disadvantage that additional connecting lines between the container and the drain pump are needed. (DE-OS 2 229 505 »DE-OS 2 655 556)

These solutions include additional sealing points and require a higher production effort.

A further disadvantage is that the washing and / or care products can pass unhindered into the drainage system at a design-related percentage and afterward

the flushing of the water through the above connecting lines is intended to flush back into the container * ...

Furthermore, a solution is known in which increases the axial play of the lye pump rotor and the pump blade is designed as a shut-off «The closed position is realized via an external force. In this solution is disadvantageous that the Laugenbehälterabfluß and. the Punipenzulauf must be in a flight with a small distance from each other to achieve impure high reduction in washing and care agent losses. (ViP D 06 F 212 14-3)

Goal _{M of} the invention;

The invention should be excluded with minimal effort and without any mutual influence of program flow, existing Einspülsystemen and Abflußabsperreinreinrichtung in all commercial detergents and care products, the losses during flushing in the tub and the prescribed alkali concentration,

Here, the otherwise necessary components are to be used in their function, and no additional mechanically operated components to use »

Presentation of the _i Wes ens of the invention The invention has for its object to provide a device in which a direct blocking effect without taking influence on other modules, is achieved "

According to the invention this is achieved in that a buoyant body can move in a guide in two degrees of freedom, the opening and closing of the tub opening by the "emerging suction at startup of the drain pump and on the other by the buoyancy of the buoyant body at inflow of the

Fresh water is guaranteed in the tub. In this case, the movement space of the buoyant body is designed so that the puncture of the same and the performance parameters of the subsequent components are not affected in Abflußsysteia.

Another feature of the invention is that the freedom of movement of the buoyant body to the subsequent

, Components of the drainage system is limited in the form of a protective device. For the reliability of this device is important that a constant self-cleaning effect is ensured in order to achieve a safe and sufficient sealing effect to the tub.

According to the invention this is achieved in that the buoyant body has on its lateral surface swirl-shaped depressions, which put him through the water flowing past in rotation and thereby .anhaftende foreign bodies are rinsed. The upper top surface has only sealing effect.

embodiment

The invention will be explained below by way of example

 Showing:

Fig. 1, drainage system

Fig. 2 buoyant body

Fig. 1 shows the schematic representation of the drainage shut-off system with the floatable η body 4 «The tub 2, the guide 2 is tightly connected. Xn the guide 2 is the buoyant body 4, which is bounded below by the protective device 3.

The drain pump 5 is located under the protection device 3 ·. The start of the flushing process in the drainage system

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Filled water fills, the guide'2 so far that the floating. capable body 4 due to its buoyancy. the Behälterabfluß 9 is pressed with the upper deck surface 7 and this closes * The unresolved detergent arrived at the Behälterabfluß 9 in the course of the flushing process can no longer get into the Äbflußsystem and thus lost the further washing process

 By reversing the drum 10 and the heating of this detergent is released and is the other

Washing process fully available »

After completion of the washing process 5, the wash liquor is pumped out by putting the drain pump. As a result of the suction effect of the moldable body 4 the container outlet 9 free, so that unimpeded pumping the

Washing liquor from the tub 1 can be done.

Due to the introduced in the outer surface 6 of the buoyant body 4th swirl-shaped recesses 8 is caused by the flow of the wash liquor, the buoyant body 4 in a rotational movement. For a self-cleaning of the lateral surface 6 and the upper top surface 7 is ensured.

Claims (3)

- 5 - -2 Claims under the invention « 1 · Device for preventing detergent losses in washing machines and dishwashers with a , 5 drivingly filled with liquid liquor container in a vibrating or rigid construction, the addition of the liquid additives, in particular in solid and liquid form, characterized in that the device is attached directly to the tub (1) and a buoyant body (4-), the can move in two degrees of freedom, contains, is in a guide (2) and is fluidically designed so that the closing and opening of the container outflow (9) is guaranteed without affecting the performance parameters of subsequent components in the drainage system · Device for preventing detergent losses in washing machines and dishwashers according to item 1, characterized in that the movement space of the floatable body (4) in the direction of discharge has a boundary which is simultaneously designed as protection device (3) for the drain pump (5). 3 * device for preventing detergent losses according to items 1 and 2, characterized in that the buoyant body (4 ·) on its lateral surface (6) has swirl-shaped depressions (8) and the upper cover surface (7) is rotationally symmetrical · For this JSLSeiten drawings