A method and apparatus for autonomously switching off a domestic appliance after completion of a previously selected program is disclosed. The domestic appliance has a control device that executes programs controlling the domestic appliance and an operating unit. The domestic appliance is connected
A method and apparatus for autonomously switching off a domestic appliance after completion of a previously selected program is disclosed. The domestic appliance has a control device that executes programs controlling the domestic appliance and an operating unit. The domestic appliance is connected to electrical energy from a power source through circuit arrangement comprising a terminal connection and first and second switches. The first electrical switch is separate from the second switch and can be switched from an open state to a closed state in which the switch is electrically conductive to connect the control device to the electrical energy. The control device is designed to switch the second switch from an open state to a closed state in which the control device is connected to electrical energy through the second switch as soon as the first switch is switched to the closed switching state.
대표청구항▼
1. A circuit arrangement for operating a domestic appliance, comprising: a control device for executing programs of the domestic appliance;a terminal connection, through which the domestic appliance can be supplied with electrical energy from a supply network;a first electrical switch, said control
1. A circuit arrangement for operating a domestic appliance, comprising: a control device for executing programs of the domestic appliance;a terminal connection, through which the domestic appliance can be supplied with electrical energy from a supply network;a first electrical switch, said control device being adapted to be coupled to the terminal connection through said first electrical switch;an operating unit connected to the terminal connection, said operating unit selecting programs for said control device, said operating unit having a fixed contact element and a mobile contact element, said mobile contact element being adapted to move relative to the fixed contact element when the operating unit is actuated by an operator, said mobile contact element being electrically coupled to the fixed contact element when the operating unit is not in a starting position, said first electrical switch being switched from an open state to a closed state in which the first switch is electrically conductive in response to an actuation of the operating unit; anda second electrical switch, said first and second electrical switches being separate from each other, said control device being adapted to be coupled to the terminal connection through said second switch, said second switch being switched from an open state to a closed state in which the control device is coupled to the terminal connection through the second switch as soon as the first switch is switched to the closed state. 2. The circuit arrangement of claim 1 wherein said control device is adapted to switch the second switch to the open state after of a program of the domestic appliance is completed. 3. The circuit arrangement of claim 1 wherein the second switch is a relay. 4. The circuit arrangement of claim 1, further comprising a power unit adapted to be coupled to the terminal connection through the operating unit, said power unit being adapted to provide an electrical voltage to switch said first switch. 5. The circuit arrangement of claim 4 wherein the power unit is a capacitor power unit. 6. The circuit arrangement of claim 4, further comprising a control and monitoring unit coupled to said power unit and to said first switch, said control and monitoring unit being adapted to monitor electrical voltage provided by the power unit, said control and monitoring unit being adapted for initiating an electrical pulse for switching the first switch in response to a change in the value of said monitored electrical voltage. 7. The circuit arrangement of claim 6 wherein said control and monitoring unit is adapted to initiate an electrical pulse to switch said first switch when the electrical voltage provided by the power unit reaches a predetermined value. 8. The circuit arrangement of claim 7 wherein said electrical pulse has a duration (tW), and said first switch is switched to the closed switching state for the duration (tW) of said electrical pulse. 9. The circuit arrangement of claim 6 wherein a reset signal is generated by actuating said operating unit and said control and monitoring unit includes a reset input such that said reset signal causes said electrical pulse to be initiated when said reset signal is applied to said reset input. 10. The circuit arrangement of claim 7 wherein the first switch is one of a semiconductor switch or a relay. 11. The circuit arrangement of claim 7 wherein the first switch is an OptoMOS relay. 12. The method of claim 11 wherein the domestic appliance includes a door having a mechanical lock, and a third electrical switch adapted to be switched by the control device, said third electrical switch being connected in parallel with the second switch and adapted to couple the control device to the terminal connection, said method further comprising the steps of: mechanically locking the door; andswitching the third switch into a closed state in response to the mechanical locking of the door, so that the third electrical switch electrically couples said control device to said terminal connection in response to the mechanical locking of the door. 13. The circuit arrangement of claim 7 wherein the domestic appliance has a door that is locked mechanically, said circuit arrangement further comprising a third electrical switch electrically connected in parallel with the second switch, said control device being adapted to switch said third switch into a closed state so that said third electrical switch electrically couples said control device to said terminal connection in response to the mechanical locking of said door. 14. A method for operating a control device of a domestic appliance including an operating unit having a starting position that can be selected by an operator and a fixed and a mobile electrical contact, said control device being electrically connected to a circuit arrangement having a terminal connection and first and second electrical switches, the first and second electrical switches being separate from each other, said operating unit selecting programs of the domestic appliance for execution, said control device executing said programs, said method comprising the steps of: switching the first electrical switch to a closed state in response to an actuation of the operating unit;supplying the control device with electrical energy from a supply network via the terminal connection of the circuit arrangement when the first electrical switch is switched to a closed state;switching the second electrical switch to a closed state so that the control device is coupled to the terminal connection through the second electrical switch as soon as the first switch is switched to the closed state;electrically coupling the fixed contact element and the mobile contact element when the operating unit is not in a starting position. 15. The method of claim 14, said method further comprising the step of: selecting a program of the domestic appliance by actuating the operating unit. 16. The method of claim 14 wherein a power unit is coupled to the terminal connection through the operating unit, and the power unit is coupled to the first switch through a control and monitoring unit, said method further comprising the steps of: initiating an electrical pulse in response to an actuation of the operating unit, the pulse being initiated by the control and monitoring unit; andswitching the first switch to the closed state in response to the electrical pulse initiated by the control and monitoring unit;maintaining the first switch the closed state for the duration of the electrical pulse;switching the second switch to the closed state during the electrical pulse; andmaintaining the second switch in the closed state for the duration of a previously selected program of the domestic appliance. 17. The method of claim 14 further comprising the step of: switching the second switch is to the open state after completion of a program of the domestic appliance, the second switch being switched to the open state after completion of a program of the domestic appliance using the control device. 18. The method of claim 17 wherein the control and monitoring unit includes a reset input, said method further comprising the step of: supplying a reset signal to the reset input of the control and monitoring unit when the operating unit is actuated, said reset signal causing the electrical pulse to be initiated by the control and monitoring unit. 19. The method of claim 14 wherein a power unit is adapted to be coupled to the terminal connection through the operating unit and to the first switch, said method further comprising the step of: switching said first switch using an electrical voltage from said power unit. 20. The method of claim 19 wherein a power unit is adapted to be coupled to the terminal connection through the operating unit and to the first switch through a control and monitoring unit that monitors the electrical voltage provided by the power unit, said method further comprising the steps of: monitoring the electrical voltage provided by the power unit; andswitching said first switch in response to the value of the monitored electrical voltage. 21. The method of claim 19 wherein a power unit is adapted to be coupled to the terminal connection through the operating unit and to the first switch through a control and monitoring unit that monitors the electrical voltage provided by the power unit, said method further comprising the steps of: monitoring the electrical voltage provided by the power unit; andinitiating an electrical pulse for switching said first switch when the monitored electrical voltage reaches a predetermined value. 22. The method of claim 21, said method further comprising the step of: maintaining the first switch in the closed state for the duration (tW) of the electrical pulse.
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이 특허에 인용된 특허 (2)
Lothar Knopp DE; Frank Boldt DE, Method for varying programs stored in a program-controlled household appliance.
Rickard Jimmy R. (Louisville KY) Hollenbeck Robert K. (Louisville KY), Test initiating apparatus for appliances having self-diagnostic testing capability.
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