초록 ▼

Energy saving heating vessel adapted for heating by contact with bottom surface heating means, such as a hotplate, is disclosed. The described vessels typically have a heating rate 2 to 5 times faster than a conventional glass vessel while consuming about half the energy or less. The vessel includes

Energy saving heating vessel adapted for heating by contact with bottom surface heating means, such as a hotplate, is disclosed. The described vessels typically have a heating rate 2 to 5 times faster than a conventional glass vessel while consuming about half the energy or less. The vessel includes sidewalls of a non-metal material such as a plastic, and a composite bottom. The composite bottom has a high heating surface contact area and includes a liquid-impervious innermost film of a non-metal material of a minimal thickness to minimize its resistance to heat transfer through it, bonded to and supported by an outermost layer of a rigid good thermal conductivity material preferably a graphitic material having a conductivity at least ten times higher than the sidewalls and the inner film, such outermost layer being the hot plate contacting element. The vessel can be made in a variety of shapes adapted for use in laboratory, domestic, service and industrial applications.

대표청구항 ▼

An energy efficient heating vessel having thermally insulative sidewalls of a plastic material, and a thermally conductive bottom, said bottom including: an inner film of a plastic material intergral with said sidewalls, said film being thin for minimal resistance to heat transfer but of sufficient

An energy efficient heating vessel having thermally insulative sidewalls of a plastic material, and a thermally conductive bottom, said bottom including: an inner film of a plastic material intergral with said sidewalls, said film being thin for minimal resistance to heat transfer but of sufficient substance as to be liquid impervious to separate liquid from said conductive bottom, and an outer layer of thermally conductive graphitic material in thermal contact with and supporting said inner film, and adapted for thermal contact with a heating surface, said vessel effective to transmit heat from said heating surface through said bottom to the contents of said vessel, and to retard the transfer of heat from said contents through said sidewalls, for enhanced efficiency of liquid heating.