公开(公告)号：US20080184790A1

公开(公告)日：2008-08-07

申请号：US11834133

申请日：2007-08-06

Applicant: Jun Ding ,  Reg McCulloch ,  Gregory Cox ,  Jason Cook

Inventor： Jun Ding ,  Reg McCulloch ,  Gregory Cox ,  Jason Cook

IPC: G01F1/68

CPC classification number: G01F1/684 ,  G01F1/688 ,  G01F1/69 ,  G01F1/692

Abstract: A thermal mass flow measuring apparatus comprises a sheath having an interior surface and a protective exterior surface. A liquid material having a thermal conductivity greater than about 12 w/(m·° C.) is disposed within the sheath in contact with the interior surface of the sheath. A sensor element, such as a thin-film thermoresistive element or a wire-wound thermoresistive element is at least partially submerged in the liquid material. The liquid material, which is preferably liquid metal, decreases the overall thermal resistance between the outer surface of the sheath and the sensor element.

Abstract translation: 热质量流量测量装置包括具有内表面和保护外表面的护套。 具有大于约12w /（m℃）的导热率的液体材料设置在鞘内与鞘的内表面接触。 传感器元件，例如薄膜热敏元件或线绕热电阻元件至少部分地浸没在液体材料中。 优选液体金属的液体材料降低了护套的外表面和传感器元件之间的整体热阻。