Patent ID: 8008608

Claim:
An autoclave for pressure and temperature treatment of objects comprising: a pressure container having a pressure resistant wall which encloses a pressure chamber for receiving the objects to be treated, said pressure chamber having a free inner diameter of at least 1.5 m; and a heat source for heating the objects received in said pressure chamber, said heat source including: a plurality of microwave sources irradiating microwave radiation, which are arranged outside said pressure container, the microwave radiation irradiated by said microwave sources being coupled through said pressure resistant wall into said pressure chamber, wherein the microwave radiation irradiated by each of said microwave sources arranged outside said pressure container is coupled into a coaxial wave guide extending through said pressure resistant wall, wherein said coaxial wave guide extends through an air guiding and microwave reflecting sheet arranged at a distance to said pressure resistant wall within said pressure chamber, and at least one hot air source for building up pressure in said pressure chamber by means of increasing a gas temperature of gas enclosed by said pressure container.