DD150357B1 - DEVICE FOR PREVENTING DETERGENT LOSSES IN WASHING MACHINES AND DISHWASHERS - Google Patents

Description

For this 2 pages drawings

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.

Characteristic of the hitherto known technical solutions

Conventional solutions of drainage systems have the disadvantage that after flushing washing and care products in the tub no suitable facilities are available to exclude the losses occurring in solid or liquid detergents and care products. This means a reduction in the washing liquor concentration and thus a deterioration of the washing results.

All known designs have the disadvantage that additional connecting lines between the container and the drain pump are needed. (DE-OS 2229505; DE-OS 2655556)

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

A further disadvantage is that the washing or care products can pass unhindered to a design-related percentage in the drainage system and after flushing the water through the above connecting lines a backwashing is sought in the container.

Furthermore, a solution is known in which the axial play of the lye pump rotor is increased and the pump blade is designed as a shut-off element. The closed position is realized by an external force. In this solution, it is disadvantageous that the lye container drain and the pump inlet must be in alignment with a small distance from each other in order to achieve a high reduction in washing and care agent losses. (142902)

Object of the invention

The invention should be excluded with minimal effort and without any mutual influence of program flow, existing Einspülsystemen and Abflußabsperreinrichrichtung with all commercial detergents and care products, the losses during flushing in the tub and the prescribed alkali concentration. The otherwise necessary components are to be used in their function, and no additional mechanically operated components to use.

Explanation of the essence of the invention

The invention has for its object to provide a device in which a direct Absperrwirkung to take without affecting other assemblies, 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 resulting suction at startup of the drain pump and on the other by the buoyancy of the buoyant body at inflow of fresh water in the Lye containers is guaranteed. The movement space of the buoyant body is designed so as not to interfere with the function of the same and the performance parameters of subsequent components in the drainage system A further feature of the invention is that the freedom of movement of the buoyant body is limited to the downstream components of the drainage system in the form of a protection 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 adhering foreign bodies are rinsed. The upper deck 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 buoyant body 4.

At the tub 1, the guide 2 is tightly connected. In 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 arrival of the Einspülvorganges in the drainage system water fills the guide 2 so far that the buoyant body 4 is pressed due to its buoyancy to the Behälterabfluß 9 with the upper deck surface 7 and closes it. The undissolved detergent which has arrived at the container outlet 9 in the course of the rinsing-in process can no longer be introduced into the container

Get drain system and thus lost the further washing process.

By reversing the drum 10 and the heating of this detergent is released and is the further 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, the buoyant body 4 releases the container outlet 9, so that unimpeded pumping out of the wash liquor from the tub 1 can take place.

Due to the in the mantle surface 6 of the wimmfähbaren body 4informendall-shaped recesses 8 is characterized by the

Flow of the wash liquor of the buoyant body 4 is set in a rotary motion. This is a self-cleaning of the

Mantle surface 6 and the upper top surface 7 guaranteed.

Claims (3)

Invention claim: 1. A device for preventing detergent losses in washing machines and dishwashers with an operationally filled with liquid tub in a swinging or rigid construction, which contains addition to the liquid additives, especially in solid and liquid form, characterized in that the device directly on the tub (1) is mounted and a buoyant with two degrees of freedom body (4), which is located in a guide (2), and the buoyant body (4) with its top surface (7) at the Behälterabfluß (9) in accordance with the program sequence is applied or at a distance stands for this. 2. means for preventing detergent losses according to item 1, characterized in that the movement space of the buoyant body (4) in the discharge direction a sieve-like protection device (3) as a boundary to the drain pump (5). 3. A device for preventing detergent losses according to item 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.