EP2488091A2

EP2488091A2 - Household appliance, in particular a household dishwashing machine

Info

Publication number: EP2488091A2
Application number: EP10759863A
Authority: EP
Inventors: Reinhard Hering; Michael Rosenbauer
Original assignee: BSH Bosch und Siemens Hausgeraete GmbH
Current assignee: BSH Hausgeraete GmbH
Priority date: 2009-10-12
Filing date: 2010-09-24
Publication date: 2012-08-22
Anticipated expiration: 2030-09-24
Also published as: RU2529386C2; PL2488091T3; US20120180817A1; EP2488091B1; DE102009045592A1; US9004081B2; WO2011045164A2; WO2011045164A3; RU2012114723A

Abstract

The invention relates to a household appliance (HG), in particular a household dishwashing machine, at least having a communication interface (U) which can be brought into signal contact (SV) with an external indicator means (EA). According to the invention, after completion of a treatment process, the household appliance (HG) is disconnected from a power supply network supplying the household appliance (HG) with electrical energy and before separating the household appliance (HG) from the power supply network, in particular promptly after the completion of the treatment process, a signal (S_Ende) can be transferred via the communication interface (U) to activate the external indicator means (EA) to indicate at least the end of the treatment process.

Description

Household appliance, in particular household dishwasher

The invention relates to a household appliance, in particular a domestic dishwasher, at least comprising a transmission interface, which can be brought into signal connection with an external display means.

In the evaluation of household appliances by consumer organizations, the energy consumption of the household appliance, in particular its annual energy balance, plays an important role. Household appliances have an operation display with at least optical display means, for example LEDs, with which during operation of the household appliance operating parameters, etc., and after completion of a

Treatment process can be displayed according to a program that the treatment process has been completed. However, the household appliance remains at the end of the program on the power grid until the customer actively intervenes and turns off the household appliance by pressing the main switch.

The object of the invention is to provide a domestic appliance, in particular household dishwasher, in which the energy consumption is further reduced. According to the invention it is provided that after completion of a treatment process, the household appliance is separated from a household appliance with electrical power supply network, and before disconnecting the household appliance from the power supply network, in particular promptly completion of the treatment process, a signal via the transmission interface for activating the external display means is transmittable to indicate at least the end of the treatment process. In this case, corresponding to the separation of the household appliance from the power supply network

Switching means provided which separate the household appliance automatically, ie without intervention of a user from the power supply, so that the household appliance is turned off and in particular no stand-by losses occur more. For this purpose, for example, the switching means may have a self-holding contact circuit. Before the switching means causes a conclusion of a treatment process towards the separation from the supply network, a signal is generated, for example by a control of the household appliance, via the Transmission interface to be transmitted to activate an external display means. This can be done promptly at the time of completion of the treatment process, ie, for example, before or after the completion of the treatment process. Thus, after completion of the treatment process, the disconnection from the supply network can be delayed, for example, by a period of 1 second to 1 minute in order to generate the signal in this time span and to transmit it via the transmission interface. However, it can also take place almost at the same time as the completion of the treatment process or even in a period of, for example, 1 second to 5 minutes before completion of the treatment process. In these two cases, the energy consumption is reduced by the amount that occurs in the above period of time. Furthermore, it is advantageous in this case that an operator is informed by the lead time in such a timely manner from the conclusion of a treatment process that they can go to the household appliance that is, for example, in another room of a flat or house, in which case the external display means is used to transfer information concerning the household appliance to other places. The external display means may be, for example, a display on a stove, a refrigerator and / or a radio. The signal connection between the transmission interface of the household appliance and the external display means may be, for example, by radio, WLAN, Bluetooth,

Powerline, etc. done. By means of the transmission interface of the household appliance, the external display means is activated to display at least the end of the treatment process at the end of the treatment process. Since according to the invention

Displayed at the end of the treatment process on the external display means, the display of a completed treatment process is immediately on

Household appliance. The invention is based on investigations, according to which a period of time between the conclusion of the actual treatment process and a subsequent treatment process can be in the range of hours or days. In the event that after the end of the treatment process, the main switch is not turned off, therefore, in particular the optical display means indicating the program end, remain activated until the following treatment process. This can be done in the

Yearly energy balance of the energy consumption of the household appliance will be significantly increased. The invention is particularly applicable to a household appliance, which is automatically set after the end of the treatment process and in particular after already successful activation of the external display means out of service to a

Energy consumption of the household appliance to stop after completion of the treatment process.

In such a complete shutdown of the household appliance, the user would receive no information from the household appliance itself, whether the appliance has completed the treatment process properly, or if there is a power failure or other defect. According to the invention, therefore, the external display means is activated immediately before such a shutdown of the household appliance, so that when taken from the power supply household appliance on the external display means the end of the treatment process can be displayed.

To reduce the energy consumption of the external display means this can be disabled during the treatment process or before and activated only with appropriate control by the household appliance. In turn, the home appliance may have visual indicators that merely indicate operating conditions before and during the treatment process, but do not indicate the end of the treatment process. Accordingly, the optical status indicator can be deactivated after the end of the treatment process.

The external display means may remain activated after the end of the treatment process for a predetermined period of time or until actuation with a trigger signal. After this period of time, the external display means can be automatically deactivated.

Alternatively or additionally, the control of the household appliance may detect, for example, a door of a appliance door. In such a case, the controller of the household appliance recognizes that the user is informed of the end of the treatment process. In this case, the controller can generate a trigger signal with which the external display means is deactivated via the transmission interface. When using such a trigger signal to switch off the external display means, the control remains device of the household appliance after a program end activated, while only the optical display means are disabled.

The external display means can be activated as follows and display the program end of the household appliance: Thus, at the end of the treatment process, a control device can generate a program end signal with which the external display means is activated via the transmission interface. Together with the generation of the program end signal, the control device can automatically generate a switch-off signal with which at least the optical display means arranged in the control panel of the household appliance are automatically deactivated.

In an energy-saving embodiment, the controller of the household appliance may have a self-holding contact circuit. The self-holding contact circuit can be deactivated by the switch-off signal and open a switching element with which a power supply unit of the household appliance can be switched without current.

The self-holding contact circuit may have at least one power switch. This can be designed as a pushbutton, which is open in the unactuated state and closes electrical contact points when actuated. The push-button can be actuated as a microswitch in the control panel of the household appliance by an operator and can be connected in parallel to the above-mentioned switching element.

The self-holding contact circuit may preferably have a bistable relay with which a relay contact acting as a switching element can be switched. Such a bistable relay is characterized above all by the property that it can assume two different stable switching states when de-energized. A relay contact of the bistable relay may be connected as a switching element in a power supply line of the household appliance. Provided the bistable relay is energized with the turn-off signal, it switches the relay contact from a stable de-energized open state to a stable de-energized closed state, or vice versa, whereby the household appliance is completely decoupled from the mains.

Furthermore, it is preferably provided that the power switch and a circuit breaker are arranged in parallel. The power supply network can eg at a microswitch trained switch and abut parallel to the switching element connected. When put out of service home appliance, both the power switch and the switching element are open. By pressing the microswitch, the deactivated, that is open switching element of the self-holding contact circuit can be bypassed, whereby the control device is acted upon by a voltage pulse. The voltage pulse is passed via the control device to the self-holding contact circuit, whereby the self-holding contact circuit closes the switching element. In this way, current flows from the network via the now closed switching element

Self-holding contact circuit, so that the switching element remains stably closed while the power switch is open again. As soon as the control device conducts the switch-off signal to the self-hold contact circuit, this opens the switching element, whereby the

Power supply to the household appliance is interrupted.

It is preferably provided that an equally high electrical voltage is applied to the power switch and the off switch. This allows a particularly simple structure.

It is preferably provided that the power switch and the off switch an input and / or off-pulse are transmitted to the control device. It is further preferably provided that the power supply with the power switch and the circuit breaker is arranged forming a series circuit. In addition, it is preferably provided that the control device is connected to the power supply with electrical energy supplied. It is further preferably provided that the operating display is connected to the power supply with electrical energy supplied. Finally, it is preferably provided that the self-holding contact circuit is assigned to a controllable by the controller control.

The self-holding contact circuit may preferably have a bistable relay with which a relay contact acting as a switching element can be switched. Such a bistable relay is characterized above all by the property that it can assume two different stable switching states when de-energized. A relay contact of the bistable relay may be connected as the switching element in the main supply line of the household appliance. If the bistable relay is supplied with the switch-off signal, it switches the relay contact from a stable currentless open state into stable de-energized closed state or vice versa, whereby the household appliance is completely decoupled from the network or connected to it. Instead of a relay, a flip-flop, in particular an RS flip-flop, can also be used.

Finally, it is preferably provided that the self-holding contact circuit is connected to the circuit breaker such that the circuit breaker can be brought into an open state, so that a separation of the supply voltage is possible in a simple way.

Furthermore, the object of the invention is achieved by a method according to claim 8. Advantageous developments are specified in the subclaims.

Hereinafter, an embodiment of the invention with reference to the accompanying figures will be described. Show it:

Fig. 1 in a schematic perspective view of a consisting of a household dishwasher and an extractor hood

Appliances Network; and

Fig. 2 shows a circuit arrangement of the household dishwasher.

In Fig. 1, a household appliance network is shown in the present

Embodiment has a household dishwasher and a hood DUH. The domestic dishwasher is equipped with a transmission interface U, which is in signal communication with an optical display means EA of the hood DUH, as indicated by the dashed arrow SV. The display means EA of the hood DUH can be about a display with known 7-segment displays. As described in detail later, the display means AE of the hood DUH in double function can display both operating parameters of the hood and a program end after an expired rinse cycle of the household dishwasher. The household dishwasher has a front door GT, which is pivotable about a bottom-side horizontal pivot axis in a known manner and with which a feed opening of the washing compartment BR can be opened or closed for loading and / or unloading. The loading opening is at the top by a

Control panel B limited carrying a micro-switch ES and only indicated optical display means AZ a power indicator BA. In addition, input means E are provided with which operating parameters for a rinse cycle of the household dishwasher can be entered.

The provided in Fig. 1 in the left area of the control panel B microswitch ES is exemplified here as a key switch. With a pressure actuation of the microswitch ES, the household dishwasher can be switched into operational readiness, while in a subsequent pressure actuation the household dishwasher is decoupled from the power supply network. FIG. 2 shows a circuit arrangement in which inter alia the microswitch ES and the operating display BA are integrated. In the circuit arrangement shown, the domestic dishwasher is connected to the power supply network via a main supply line H. In the main supply line H, a later-described switching element AS and a power supply NT are connected in series.

The power supply unit NT converts the mains voltage of, for example, 230 V into a low voltage of 12 V. The low voltage 12V is converted into a low voltage of 5 V by means of a regulator RG connected in series with the power supply NT, with which a control device SE is supplied. The power supply unit NT also supplies additional device components via additional outputs as well as the low-voltage household appliance operating indicator BA.

The control device SE is integrated in a control module not shown in detail and controls during the execution of a wash program via a first signal line SL1 the optical display means AZ of the operating display BA and other device component, such as the drain pump or the circulation pump, by means of control signals S _E. As is further apparent from FIG. 2, the control device SE is connected via a second

Signal line SL2 connected to a bistable relay RE a self-holding contact circuit SKS. The bistable relay RE is the relay contact already mentioned

Associated switching element AS, which is connected in place of a mechanical main switch in the main supply line H and as such assumes a main switch function with which the household dishwasher can be decoupled from the power supply network or connected to it. The control device SE of the household dishwasher with the interposition of the transmission interface U in signal communication SV with the visual display means EA of the hood DUH, which is assigned here as an external display means and the household dishwasher. The signal connection SV between the transmission interface U of the domestic dishwasher and the external display means EA can be a radio connection by way of example here.

The control device SE is also associated with a door opening sensor TS, which can detect a closing or opening state of the appliance door GT and forward it to the control device SE.

When put out of service domestic dishwasher both the micro switch ES and the switching element AS is open. The commissioning of the household dishwasher switched off by means of a pressure actuation of the microswitch ES, in which the initially open switching element AS is bridged. By the pressure actuation of the microswitch ES a voltage pulse is betreitgestelltt, which is passed via the power supply unit NT and the controller RG to the control device SE. The control unit SE then forwards a switch S to _a further the bistable relay RE, after which the relay coil is energized and the switching member is moved from the AS normally stable open state into a normally stable closed state. In this way, after the pressure actuation back open microswitch ES is bridged by the now closed switching element AS, whereby the power supply NT is applied to the mains voltage.

The household dishwasher and in particular its operating display BA is thus switched to ready, so that subsequently by means of the input means E a Rinse program can be started. During the wash program and before the start of the wash program, the optical display means AZ of the domestic dishwasher can display the operating state and set parameters. In contrast, the external display means EA of the extractor hood DUH, which is external to the household dishwasher, can operate independently of the household dishwasher. After the end of the wash program, the

Control device SE, the device components, such as lye or circulating pump off.

Immediately after the end of the washing program, the control device SE also generates a further voltage pulse, which activates the bistable relay RE as the switch-off signal S _a us via the second signal line SL 2. Thereafter, the relay RE switches the switching element AS from the closed position to the open position, whereby the

Household dishwasher is completely disconnected from the mains.

Consequently, therefore, the visual display means AZ of the household dishwasher are disabled. The switching element AS of the relay RE thus acts as a main switch, which automatically disconnects the power supply NT of the domestic dishwasher from the power supply network after completion of the rinse cycle. In this way it is achieved that after the end of the program especially a

Power supply via the power supply NT to the optical display means AZ of

Power indicator BA is interrupted.

Simultaneously with the generation of the switch-off signal S _a , the control device generates

SE is an end-of-program signal. the means of the transmission interface U for

Display means EA of the hood DUH is passed. In this case, the display means EA displays, for example, the program end of the household dishwasher for a limited time, while the household dishwasher is already completely decoupled from the power supply network.

In addition to or as an alternative to such a time-limited program end display, upon detection of an opening operation of the appliance door GT, the control device SE can actuate the external display means EA with a trigger signal in order to program the program end. Disable display. For this purpose, as an alternative to the circuit arrangement of FIG. 2, the circuit breaker AS is not arranged in the main supply line H by way of example.

but between the power supply NT and the operating display BA of the household dishwasher. As a result, the control device SE can control the external display means EA of the extractor hood DUH with the trigger signal after the end of the program in order to effect a shutdown of the external display means EA. As is further apparent from FIG. 2, the microswitch ES is in signal connection via an input line EL directly to the control device SE. The voltage pulse provided by a manual pressure actuation of the microswitch ES is therefore also conducted directly to the control device SE, which detects and evaluates the pulse. Upon detection of such a voltage pulse, the control device SE checks whether the power supply NT is already activated during the pressure actuation of the microswitch ES. When the power supply unit NT has not yet been activated, the control device SE recognizes a switch-on actuation of the user and controls, as described above, with the switch-on signal S _e in the

Relay RE on. When already activated power supply NT detects the controller SE in the micro-switch push-button operation of the user, so that the

Control device SE a corresponding switch-off signal Saus leads to the relay RE. In this case, the household dishwasher is put out of action. An optionally currently running wash program is thus interrupted.

LIST OF REFERENCE NUMBERS

ES microswitch

AS switching element

H main supply line

B control panel

AZ display means

BA operating display

EL input line

RG controller

SE control device

RE bistable relay

SKS self-holding contact circuit

ST control

HG home appliance

SL1, SL2 signal lines

DUH extractor hood

SV signal connection

U transmission interface

TS door opening sensor

BR treatment room

End of program end signal

Claims

1. Household appliance (HG), in particular domestic dishwasher, at least comprising a transmission interface (U), which can be brought into signal connection (SV) with an external display means (EA), characterized in that after completion of a treatment process, the household appliance (HG) of a household power supply (HG) supplying power supply network is disconnected, and before disconnecting the household appliance (HG) of the

Power supply network, in particular promptly the completion of the

Treatment process, a signal (Enn) over the transmission interface (U) for activating the external display means (EA) is transferable to indicate at least the end of the treatment process.

2. Household appliance according to claim 1, characterized in that the household appliance (HG) has a controller (ST), which sets the home appliance after the end of the treatment process, in particular after activation of the external display means (EA), out of operation.

3. Household appliance according to claim 1 or 2, characterized in that the

external display means (EA) is disabled during the treatment procedure or before.

4. Household appliance according to claim 1, 2 or 3, characterized in that the household appliance (HG) has an operating display (BA) for displaying operating states of the household appliance (HG), which is activated during the treatment process or before.

5. Household appliance according to claim 4, characterized in that the

Operating display (BA) of the household appliance after the end of the

Treatment process is disabled. Domestic appliance according to one of the preceding claims, characterized in that the external display means (EA) are designed to indicate the end of the treatment process for a predetermined period of time.

Domestic appliance according to one of the preceding claims, characterized in that the domestic appliance (HG) has a control (ST) which is designed to detect an opening of a door of the household appliance, wherein the controller (ST) generates the signal (SEN) when the appliance door is detected ,

8. A method for operating a household appliance (HG), in particular household dishwasher, wherein the household appliance (HG) at least one

Transmission interface (U) which is in signal communication (SV) with an external display means (EA), characterized in that after completion of a treatment process, the household appliance (HG) is separated from a power supply network supplying the household appliance (HG), and before disconnecting the household appliance (HG) from the power grid,

In particular, promptly upon completion of the treatment process, a signal (Enn) is transmitted via the transmission interface (U) for activating the external display means (EA) to indicate at least the end of the

Treatment process.

9. The method according to claim 8, characterized in that after the end of the treatment process, in particular after activation of the external display means (EA), a controller (ST) of the household appliance (HG) sets the household appliance (HG) out of operation.

10. The method according to claim 8 or 9, characterized in that the external display means (EA) is deactivated during the treatment process or before.

A method according to claim 8, 9 or 10, characterized in that

Operating states of the household appliance (HG) with a power indicator (BA) of the household appliance (HG) are displayed, which is activated during the treatment process or before. A method according to claim 11, characterized in that the operating display (BA) of the household appliance is deactivated after the end of the treatment process.

Method according to one of the preceding claims 8 to 12, characterized in that the external display means (EA) the end of the

Display treatment process for a predetermined period of time.

Method according to one of the preceding claims 8 to 13, characterized in that with a control (ST) of the household appliance (HG) an opening of a door of the household appliance is detected, and the controller (ST) when detected door opening device generates the signal (Ennde).