EP2315866B1 - Domestic appliance, especially a dishwasher or washing machine - Google Patents

Description

The invention relates to a domestic dishwasher or dishwasher.

Domestic appliances, such as dishwashers or washing machines, have a controller which, during a program sequence, can supply various appliance components of the domestic appliance, such as e.g. Pump motors and / or valves and display elements controls. After the program, as long as the controller and the display elements are supplied with electrical energy until an operator manually by pressing a main switch for switching on and / or off the domestic appliance off this.

From the JP 60 119990 A as well as the US 4,955,213 A Washing machines are known which allow automatic shutdown of the main switch of the washing machine and thus inevitably all electrical components of the washing machine after a period of time. A user of such a washing machine can thus not be displayed after switching off the washing machine that a program has been completed. Similar household appliances or dishes or washing machines are from the JP 60 048789 A , the DE 103 08 204 B3 , the DE 10 2006 029708 A1 , the US 5,150,489 A as well as the DE 43 43 105 A1 known.

In the washing machine of US 2003/025395 A1 are from a power control system "power control system" 14 (see FIG. 3 ) to which mains power is applied when the power cord is plugged in, those components (standby / low power components) 54 which require little electrical power are provided by a stand-by / low power circuitry / logic circuit 64, continuously , ie always supplied with low electrical power (see [0005] - [0007] and [0011], [0012]).) If a washing program is selected by the user via an operating switch, a processor 60 generates a control signal 70 to a Switch or circuit "switch / switch circuitry / logic" 68, which switches through the operating voltage obtained by the "operating power circuitry / logic" 66, obtained from the mains electricity, to components "operating power components" 52 with higher required operating power.

Even if no washing program is running, the washing machine consumes electrical energy for the standby / low power components 54 permanently kept in standby readiness.

The object of the invention is therefore to provide a domestic dishwasher or dishwasher with reduced energy consumption.

The solution of the o.g. Task is based on a dishwasher at least comprising a control device for controlling device components of the dishwasher having electrical consumers during a program sequence.

According to the invention it is provided that at least one switching means for at least partially de-energized switching of the control device is provided after the end of the program flow. Thus, an energy saving in a surprisingly simple manner is achieved in that after the program, the control device is completely or only partially separated by de-energized switching from a home-side power supply.

It is preferably provided that a delay element is provided for de-energized switching after a predetermined period of time. So it is possible that e.g. for a period of 30 minutes, the dishwasher or domestic dishwasher indicates a program sequence by means of acoustic and / or optical signals of an operator. After this period of time, the household dishwasher or dishwasher is disconnected from the house-side supply network by de-energized switching. In this case, it can preferably be provided that the predefinable time period can be set manually by an operator and / or the delay element can be completely deactivated.

It is provided that the control device has at least one first component group for controlling the dishwasher or domestic dishwasher before the beginning and after completion of a program flow and has a second component group for controlling the dishwasher or household dishwasher during a program sequence.

The first component group comprises at least one operating and / or display module for controlling operating and / or display elements, while the second component group has at least one control module for controlling device components during a program run.

It is further provided that at least one switching means for normally switching the second component group is provided and the switching means is actuated by means of a first delay element, which is in signal communication with the first component group. In this case, during a preset time period until the actual program start of the dishwasher, only the first component group operating with reduced energy requirement is switched on and the power supply to the second component group is interrupted. Only at the start of the program, the switching means is closed by means of the delay element and the second component group activated. The second group of components for controlling device components is separated after program flow by de-energized switching from the house-side power supply, while the first group of components for controlling control and / or display elements continues to be supplied with electrical energy. This makes it possible to inform by acoustic and / or optical signals an operator about a program flow.

For this purpose, preferably the at least one switching means is in operative connection with the first component group, so that a switching operation of the at least one switching means can be triggered by a control signal of the first component group.

It is further provided that a second switching means is provided for normally switching at least the first component group. For this purpose, the first group of components is in operative connection with the second switching means, in particular to effect a de-energized switching after the end of the program sequence.

In addition, a further delay element for the currentless switching of the first group of components is provided after a period of time. Thus, the first group of components can be separated from the home-side supply network after expiry of a predetermined period of time after the program flow by de-energized switching.

For this purpose, the second switching means is preferably designed as a main switch, with which the domestic dishwasher can be switched on at least manually.

Finally, it is preferably provided that the main switch automatically disconnects the household dishwasher from the electrical supply network after a program run.

Hereinafter, two embodiments of the invention will be described with reference to the accompanying drawings.

Fig. 1

eine perspektivische Darstellung einer Geschirrspülmaschine;

Fig. 2

ein Prinzipschaltbild einer Steuereinrichtung der Geschirrspülmaschine gemäß dem ersten Ausführungsbeispiel; und

Fig. 3

ein entsprechendes Prinzipschaltbild einer Steuereinrichtung der Geschirrspülmaschine gemäß dem zweiten Ausführungsbeispiel der Erfindung.

Show it:

Fig. 1

a perspective view of a dishwasher;

Fig. 2

a schematic diagram of a control device of the dishwasher according to the first embodiment; and

Fig. 3

a corresponding block diagram of a control device of the dishwasher according to the second embodiment of the invention.

Fig. 1 shows as an exemplary embodiment of a household appliance, a dishwasher with a front panel 1. In the control panel 1 three program switches 3, 5, 7 are provided for selecting different washing programs in about the middle. The dishwasher also has a display unit 9, which can display an example of a daytime and a Spülprogrammdauer. By way of example, the display unit 9 can have four sieve-segment displays which can be activated by means of a control device. In a known manner, a main switch 11 for switching on and off is further provided in the control panel 1 of the dishwasher, which separates the dishwasher from a mains voltage of the electrical supply network or this connects.

The in the Fig. 1 Dishwasher shown is also equipped with a time delay function, by means of a time period .DELTA.t _v user-adjustable is. Only after expiration of this user-set time duration Δt _v , the actual start of operation of the dishwasher, so that during this period .DELTA.t _v, the dishwasher is in standby mode when the main switch 11 is turned on. The period of time Δt _v can by means of in Fig. 1 below the display unit 9 indicated controls 13 are set.

Fig. 2 shows a simplified schematic diagram of a first embodiment of the control device 8 of the dishwasher. The control device 8 is connected via a power supply 15 to the electrical supply network 17, with the interposition of the main switch 11, via which the dishwasher from the electrical supply network 17 is separable or can be switched on accordingly. About the power supply 15, the device components of the dishwasher are supplied with suitable DC or AC voltages in a known manner. By way of example, the display unit 9 is connected to a supply line 19.

The control device 8 also has a first component group 21 which has at least one operating and / or display electronic component. Furthermore, the control device 8 has a second component group 23, which has a control electronic component. Both component groups 21, 23 are each supplied with electrical energy via additional supply lines 25, 27 from the power supply 15. The first component group 21 with the operating and / or display electronic component serves on the one hand as an input unit for program input by means of the program switch 3, 5, 7 and the actuating elements 13, of which in the Fig. 2 merely an example of an actuator 13 is shown, with which the time period .DELTA.t _{v is} adjustable. The first component group 21 also passes corresponding control signals to the display unit 9.

The first component group 21 is also in signal communication with the second component group 23, which controls a rinse cycle of the dishwasher during a predetermined period of operation. Accordingly, the second component group 23 is connected via signal lines 29 with the electrical device components of the dishwasher, not shown in connection.

In the guided from the power supply 15 to the control electronics component 23 supply line 27, a switch is provided as a switching means 31, the second component group 23 from Disconnect power supply 15 or from the power grid 17 and thus switch off or connect it to power. The switching means 31 is actuated by means of a delay element 33 which is in signal connection with the first component group 21. In this case, the delay element 33 holds the switching means 31 during the entire preset period of time Δt _v in its open position. This means that during the preset period of time Δt _v until the actual start of the dishwasher, the power supply to the control electronic component 23 is interrupted. Only at the start of the program, the switching means 31 is closed by means of the delay element 33 and the second component group 23 is activated accordingly. In this way, during the expiration of the preset period of time Δt _v, the second component group 23, which normally operates with increased energy demand in standby mode, can be de-energized, whereas only the first component group 21 operating with reduced energy requirement is switched on.

Like from the Fig. 2 further shows, the switching means 31 is connected via a signal line 35 to the second component group 23. After the rinse cycle of the dishwasher, the second component group 23 generates a control signal, which spends the switching means 31 back to its open position. In this way, the second component group 23 is again disconnected from the electrical supply network 17 even after the rinse cycle.

In the Fig. 3 is shown according to the second embodiment, another block diagram of the control device 8 of the dishwasher. The structure and operation of the controller 8 shown therein is substantially identical to that shown in FIG Fig. 2 illustrated embodiment. In that regard, reference is made to its description.

In contrast to Fig. 2 the second component group 23 is not directly in signal communication with the switching means 31. Rather, the second component group 23 is coupled to a serving as a main switch second switching means 11. After expiration of the rinse cycle, therefore, a corresponding signal can also be generated by the second component group 23 and directed to the second switching means 11, which separates the entire dishwasher from the domestic supply network 17. As a result, energy losses can be completely avoided after the program has been completed.

LIST OF REFERENCE NUMBERS

1

control panel

3

program switch

5

program switch

7

program switch

9

display unit

11

second switching means

13

controls

15

power adapter

17

electrical supply network

19

supply line

21

first component group

23

second component group

25

supply line

27

supply line

29

signal lines

31

first switching means

33

delay

35

signal line

I

washing program

II

washing program

III

washing program

Δt _v

time

Claims (4)

1. Dishwasher having at least one control device (8) for controlling device components of the dishwasher having electrical loads during the execution of a program, wherein at least one switching means (11, 31) is provided for at least partly de-energising the control device (8) after the program has finished executing, wherein the control device (8) has at least a first group of modules (21) for controlling the dishwasher before the beginning and after the end of a program execution and a second group of modules (23) for controlling the dishwasher while a program is executing,
   wherein the first group of modules (21) comprises at least one operating and/or display module for controlling operating and/or display elements (9),
   wherein the second group of modules (23) has at least one control module for controlling device components while a program is executing,
   wherein at least one switching means (31) is provided for de-energising the second group of modules (23) and the switching means (31) is actuated by means of a first delay element (33) which is connected for signalling to the first group of modules (21), wherein during a pre-set period of time (Δt_v) up to the actual program start of the dishwasher only the first group of modules (21) working with a reduced energy requirement is activated and the power supply to the second group of modules (23) is interrupted and only at program start is the switching means (31) closed by means of the delay element (33) and the second module group (23) is activated,
   wherein after the program has finished executing the second group of modules is isolated from the domestic supply network by de-energisation by means of the switching means (31) while the first group of modules (21) continues to be supplied with electrical energy for controlling operating and/or display elements,
   wherein a second switching means (11) is provided for de-energising at least the first group of modules (21),
   wherein the first group of modules (21) is actively connected to the second switching means (11), in order to bring about de-energisation after the program has finished executing,
   and wherein a further delay element is provided for de-energising the first group of modules (21) after a predefinable period of time has elapsed, such that the first group of modules (21) is also isolated from the domestic supply network by de-energisation after the predefinable period of time has elapsed after the program has executed.
2. Dishwasher according to claim 1, characterised in that the at least one switching means (31) is actively connected to the first group of modules (21) for de-energising the second group of modules (23).
3. Dishwasher according to one of the previous claims, characterised in that the second switching means (11) is embodied as a main switch with which the dishwasher can be at least manually switched on.
4. Dishwasher according to claim 3, characterised in that the main switch (11) automatically isolates the dishwasher from the electrical power supply network (17) after a program has executed.

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