Abstract: Cooking ranges using heating by eddy currents caused by induction of high frequency energy are known, but they have losses caused by leakage fields. The invention provides heating unit in which the magnet coils are integrated into magnetic circuit where the field is collected due to the disposition of the core. A preferred embodiment utilizes magnetic concrete for core parts with chambers for the coils. There may advantageously be cast a covering layer which is thin and wear resistant but still strong, because it is everywhere supported by the material.

Abstract: In a frying apparatus, in particular for grilling, an electric heating device with a contact frying surface is positioned in a mainly box-shaped cabinet with an up-turned opening that may be closed at a distance above the contact frying surface by a preferably transparent cover plate. Structure is provided in connection with the cabinet for conditioning the atmosphere above the contact frying surface at a temperature and air humidity suitable for a specific frying operation, together with an air exhaust for the removal of vapor, fatty particles, smoke and smell from the atmosphere. An air flow of a specific quantity and at controlled temperature and passing substantially horizontally is provided across the contact frying surface towards the air exhaust positioned at one lateral wall of the cabinet, a preferably catalytic filtering device being provided in association with the air exhaust.