GB190624637A - Improvements in Heating and Cooking Apparatus. - Google Patents

Abstract

2 4 , 6 3 7. Gronwald, H., and Vacuum Kochapparat Ges. Nov. 3. Boiling-pans.-Relates to heating or cooking apparatus in which the heating or cooking vessel is surrounded by a vacuum jacket 5, which may communicate with a chamber 10 in the vessel and contains a small quantity of liquid which is converted into vapour. The jacket 5 is connected by a pipe 6 to an air-pump, and is supplied with liquid through a pipe 7. If too much liquid passes into the jacket, the excess may be drawn through the pipe 6 and trapped in a reservoir 14. The airpipe 6 may be provided with an adjustable extension 15 arranged so that its lower end is at the level of the amount of liquid that can be completely converted into steam and fill the steam spaces. The reservoir 14 may also serve as a condenser if any steam is inadvertently drawn from the jacket 5. A gauge 13 shows the amount of water withdrawn. A corresponding amount of water is then added to the jacket. A portable field cooking-apparatus is also described and illustrated. The boiler, which is mounted above a fire-place, has its jacket connected to an air-pump placed in front of the boiler.