DE2647616B2 - Drum washing machine with a program switch - Google Patents

Description

The invention is based on a drum washing machine with a program switch according to the Generic term of the patent claim. Such a machine is state of the art due to its own prior use.

From DE-AS 1201292 it is known that one in addition to a normal level monitored by a level switch, if necessary one above this no / mal level can reach the lying high level of the water level via the program switch by once the normal level has been reached, water is allowed to continue running in a timed manner.

It is also known for the purpose of saving energy (magazine »Der Elektromeister + Deutsches Elektrohandwerk ", 1976, no. 3, p. 112) that one provides a special saving level in addition to the two usual water levels. This is what the machine is for Equipped with an economy button, the actuation of which causes a lower water level.

The invention is based on the object with the least Expenditure on switching means to increase the number of possible water levels even further To be able to carry out the washing process with even more optimal energy consumption.

This object is achieved by the features specified in the characterizing part of the patent claim solved.

In this way it is possible to adjust the operation of the washing machine better to the amount of laundry used adapt and thus reduce energy consumption.

The invention is explained in more detail with reference to the drawing.

From the program switch (not shown) come the control pulses for water supply (connection a), washing drum standstill (connection b), washing drum movement (connection d) and time-controlled water supply (connection e). With the help of the switch 1/2 (economy button) the following processes can be achieved:

After pressing the economy button 1/2, the water supply takes place via the contact level I without moving the washing drum (connection b). The resulting level is also the door security level (connection c).

If, with the same switch positions, the water is supplied with the washing drum moving (connection d), the level will be slightly different due to the changed pressure conditions.

In both cases, the water levels can be varied further by means of an additional water supply that is time-controlled via the program switch (connection e).

After deleting the economy key 1/2, the corresponding filling processes are carried out at the normal level via the Contact level II in front of you, either without moving the washing drum or with moving the Washing drum or with an additional time-controlled water inlet.

1 sheet of drawings

Claims (1)

Claim: Drum washing machine with a program switch for automatic control of the water ί Inlet and drum movement as well as with a level switch that takes the water level into account, which fiar a contact for a lower security level and a contact has a normal level, while a high level through timed water supply over the normal level is reached by a switch (1/2), the a) between the connections (α, e) of the program switch for controlling the water supply or the connections (b, d) for controlling the drum movement and the contacts (level I, level II) of the level switch, b) the connections of the program switch in the - '<»a display with the contact (level I,) for the lower security level, on the other hand in the other switch position connects to the contact (level II) for the normal level.