Patent ID: 7816629

Claim:
A vacuum heating device, comprising: a pot body ( 2 ) made of metal; the pot body ( 2 ) having an inner casing ( 22 ) and an outer casing ( 21 ; a vacuum space is formed between the inner casing ( 22 ) and the outer casing ( 21 ); the outer casing ( 21 ) having a bottom and a wall extended upwards from the bottom; a receiving space ( 220 ) furthermore, formed in the inner casing ( 22 ) for receiving an object; a heat source ( 3 ) being an electric heating film or an electric heating sheet; the heat source ( 3 ) being connected to a conductor body ( 5 ) for supplying electric power to the heat source ( 3 ); the heat source ( 3 ) being installed at a lower outer side of the inner casing ( 22 ); a pot cover ( 4 ) installed at a top of the pot body ( 2 ); the pot cover ( 4 ) having a vent hole ( 25 ); the pot cover ( 4 ) having two layers and a vacuum space being formed between the two layers; a lower periphery of the pot cover ( 4 ) being installed with a rubber pad ( 41 ); the pot cover ( 4 ) being made of metal; the pot cover ( 4 ) tightly covering the receiving space ( 220 ) of the inner casing ( 22 ) so as to have a preferred heat preservation effect; and an electromagnetic generator ( 6 ) installed below a lower side of the pot body ( 2 ) for generating electromagnetic waves so as to induce the heat source ( 3 ) to emit heat to heat the object ( 7 ) in the receiving space ( 220 ).