Control Device for an Electronic Domestic Appliance

• US 20090062962A1
• Filed: 07/30/2008
• Published: 03/05/2009
• Est. Priority Date: 08/31/2007
• Status: Active Grant

• Current Assignee: Diehl AKO Stiftung & Company KG
• Original Assignee: Diehl AKO Stiftung & Company KG
• Inventors: Baumann, Thomas, Mangold, Harald
• Granted Patent: US 7,667,937 B2
• Time in Patent Office: Days
• US Class Current: 700/275
• CPC Class Codes: F24C 7/082 on ranges, e.g. control panels, illumination

Abstract

A control device for an electronic domestic appliance has a control panel of an electrically conducting material and an electronic control system with a mains-connected circuit and a circuit that is galvanically separated from the mains. To protect the electronic control system from electrostatic discharges the control panel is grounded by way of an electrical connection between the control panel and the circuit that is galvanically separated from the mains and also an electrical connection between the galvanically separated circuit and the mains-connected circuit. The latter electrical connection between the galvanically separated circuit and the mains-connected circuit has at least one protection impedance.

Claims

1. A control device for an electronic domestic appliance, comprising:

a control panel of electrically conducting material;

an electronic control system having a first circuit connected to mains and a second circuit galvanically separated from the mains;

an electrical connection connecting said control panel and said second circuit, for grounding said control panel;

an electrical connection between said second circuit and said mains-connected first circuit, said electrical connection between said second circuit and said first circuit including at least one protection impedance.

2. The control device according to claim 1, wherein said at least one protection impedance includes at least two series-connected protection impedances.

3. The control device according to claim 1, wherein said at least one protection impedance includes capacitive protection impedances.

4. The control device according to claim 1, wherein said at least one protection impedance includes ohmic protection impedances.

5. The control device according to claim 1, wherein said at least one protection impedance includes capacitive protection impedances and ohmic protection impedances connected in parallel to said capacitive protection impedances.