Heating device
AssigneeU.S. Philips Corporation
InventorsGeorge Albert Apolonia Asselman, Adrianus Petrus Dirne, Petrus Helena Gerardus Maria Vromans
Life of this patent
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Abstract
A heating device formed as a double-wall tubular heat pipe with a closed annular space between outer and inner walls containing a vaporizable liquid heat-transporting medium, and a cylindrical bore defined within said inner tube as the heating space for objects to be heated, said annular space having end walls closing its ends, and means for transmitting heat through one of said end walls into said space.
Claims6
A furnace operable with a heat source and providing an isothermal heating chamber comprising first and second tubes, the first tube situated within the second with an annular space having first and second ends defined between the walls of said tubes and a bore defined within the first tube, and walls closing said ends of the annular space and sealing same, a vaporizable liquid heat-transporting medium within said annular space, said tube walls and end walls having inner surfaces defining said chamber, and having outer surfaces, said furnace further comprising capillary material on said inner surfaces, and compressed porous filling material within said chamber and supporting said tube walls from compression, said filling material and capillary material having pores, the hydraulic diameter of the filling material pores being greater than that of said capillary material, one portion of said outer surface being a heat transmission wall for receiving heat from said heat source, and said furnace being operable as a heat pipe.
Dependencies are inferred from the claim text.