Piezoelectric operating element for domestic device, especially electric cooker hob or similar, has piezo element on supporting part, covering layer and thermal insulating layer between piezo element and covering layer

摘要

The piezoelectric operating element (2) has a piezo element (6) arranged on a supporting part, a covering layer (12) and a thermal insulating layer (10) between the piezo element and the covering layer. The thermal insulation layer has a low capability for plastic deformation. The thermal insulation layer has gas inclusions, especially air inclusions, and/or openings. - Independent claims are included for the following: - (A) a domestic appliance, especially an electric cooker hob or similar, with an inventive piezoelectric operating element; and - (B) a method of operating a domestic appliance.