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    • 1. 发明授权
    • Cooking utensil with improved heat retention
    • 具有改善保温性能的炊具
    • US5643485A
    • 1997-07-01
    • US343081
    • 1994-11-21
    • Thomas F. PotterDavid K. BensonSteven D. Burch
    • Thomas F. PotterDavid K. BensonSteven D. Burch
    • A47J27/00A47J41/02B64G1/22B64G1/50B64G1/58E04B1/76E06B3/663F01N3/20F01N3/28F01N5/02F01N13/02F28F13/00H05B6/12A47G23/04
    • A47J41/028A47J27/002A47J41/02B64G1/22B64G1/226B64G1/50B64G1/58E06B3/66304F01N13/0097F01N3/2006F01N3/2882F01N3/2889F01N5/02F28F13/00B64G1/503E04B2001/7691F01N2240/02F01N2240/10F01N2260/08F01N2330/06F28F2013/008Y02T10/16Y02T10/26Y10S99/14
    • A cooking utensil with improved heat retention includes an inner pot received within an outer pot and separated in a closely spaced-apart relationship to form a volume or chamber therebetween. The chamber is evacuated and sealed with foil leaves at the upper edges of the inner and outer pot. The vacuum created between the inner and outer pot, along with the minimum of thermal contact between the inner and outer pot, and the reduced radiative heat transfer due to low emissivity coatings on the inner and outer pot, provide for a highly insulated cooking utensil. Any combination of a plurality of mechanisms for selectively disabling and re-enabling the insulating properties of the pot are provided within the chamber. These mechanisms may include: a hydrogen gas producing and reabsorbing device such as a metal hydride, a plurality of metal contacts which can be adjusted to bridge the gap between the inner and outer pot, and a plurality of bimetallic switches which can selectively bridge the gap between the inner and outer pot. In addition, phase change materials with superior heat retention characteristics may be provided within the cooking utensil. Further, automatic and programmable control of the cooking utensil can be provided through a microprocessor and associated hardware for controlling the vacuum disable/enable mechanisms to automatically cook and save food.
    • 具有改进的保温性的烹饪器具包括容纳在外锅内并以彼此间隔开的关系分开的内锅,以在它们之间形成体积或室。 室内抽真空并在内锅和外锅的上边缘用箔叶密封。 在内罐和外锅之间产生的真空以及内罐和外罐之间的最小热接触以及由于内罐和外罐上的低发射率涂层而减少的辐射热传递提供了高度绝缘的烹饪器具。 在室内提供用于选择性地禁用和重新启用罐的绝缘性质的多个机构的任何组合。 这些机构可以包括:氢气生成和再吸收装置,例如金属氢化物,可以调节以跨越内锅和外罐之间的间隙的多个金属触点,以及多个双金属开关,其可以选择性地桥接间隙 内锅和外锅之间。 此外,可以在炊具内提供具有优异保温特性的相变材料。 此外,可以通过微处理器和相关联的硬件来提供烹饪器具的自动和可编程控制,以控制真空禁用/启用机构以自动烹饪和保存食物。