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101. 发明授权

US4350446A Method and apparatus for calorimetric differential thermal analysis 失效
标题翻译：用于量热差热分析的方法和装置
公开(公告)号：US4350446A
公开(公告)日：1982-09-21
申请号：US203639
申请日：1980-11-03
申请人： Robert C. Johnson
发明人： Robert C. Johnson
IPC分类号： G01N25/20 , G01N25/48 , G01K17/00
CPC分类号： G01N25/4866 , G01N25/4826
摘要： A calorimetric differential thermal analyzer uses a planar thermoelectric sheet as its major heat flow path for transferring heat from a heat source to both the reference and sample positions. The heat source is connected to each of the positions by equivalent thermal paths formed by the sheet itself. These paths to each test position are made thermally equivalent by making them geometrically similar and forming isothermal boundaries on the sheet itself between each of the test positions. These isothermal boundaries are connected to the heat source and formed of a material having a high thermal conductance.The thermal equivalency of the paths may be enhanced by removing portions of the sheetlike material to form well defined patterns of heat flow in the sheet; e.g., structures in which the sheet is formed into radial arms in a wheel-like array with each test position being on a different spoke of the wheel. Heat from the heat source may be applied through the hub of the wheel or the rim of the wheel or both, the hub and rim being in good thermal contact with isothermal boundaries having a high thermal conductance.
摘要翻译：量热差热分析仪使用平面热电薄片作为其主要热流路径，用于将热量从热源传递到参考和样品位置。热源通过由片材本身形成的等效热路径连接到每个位置。通过使它们几何相似并且在每个测试位置之间在片材本身上形成等温边界，使得到每个测试位置的这些路径是热等效的。这些等温边界连接到热源并由具有高导热性的材料形成。可以通过去除片状材料的部分以在片材中形成明确限定的热流的图案来增强路径的热等效性。例如其中片材形成为轮状阵列中的径向臂的结构，其中每个测试位置在轮的不同轮辐上。来自热源的热可以通过轮的轮毂或轮的轮缘或二者施加，轮毂和轮辋与具有高导热性的等温边界良好的热接触。

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