PRESSURE COOKER Russian patent published in 1997 - IPC

FIELD: kitchen equipment. SUBSTANCE: pressure cooker has vessel with sealing flange and handles, cover, working and safety valves mounted on cover and pressing member interacting with ridges or slots in vessel wall. Cooker material is permeable to microwave energy. Wall thickness of lower major part of vessel is multiple the quarter of microwave radiation length of vessel material and wall thickness of upper smaller part of vessel is multiple the half length of wave of vessel material. Diameter of upper part of vessel is multiple the quarter length of microwave radiation in free space plus thickness of vessel upper part. EFFECT: increased efficiency by complete penetration of microwave energy into vessel without energy loss due to reflection of it from surface. 2 cl, 2 dwg