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    • 10. 发明授权
    • Apparatus for emitting a volatile chemical agent by heating and means
for adjusting a spacing between a heater and the chemical agent to
regulate the rate of vaporization
    • 用于通过加热发射挥发性化学试剂的装置和用于调节加热器和化学试剂之间的间距的装置以调节蒸发速率
    • US5402517A
    • 1995-03-28
    • US877952
    • 1992-04-29
    • Colin GillettMichael J. HampshireGeoffrey R. Hammond
    • Colin GillettMichael J. HampshireGeoffrey R. Hammond
    • A01M1/20A61L9/03A61L9/02
    • A01M1/2077A61L9/03Y10S261/89
    • An apparatus for emitting a chemical agent includes a housing defined by first and second co-axial housing sections received in end-to-end engagement, a heating element in the second housing section. The heat supplied to the chemical agent is varied so that the rate of vaporization can be controlled. The first housing section includes a vented base portion and a wall portion connected to the base portion so as to define a recess for receiving a volatile chemical agent. The chemical agent or a carrier therefor is secured within the recess. The second housing section includes a solid base portion and a wall portion connected to the base portion. An electric heater element is imbedded within the base portion of the second housing section so that it is electrically isolated from the base surface. The wall portions of each section are received in co-axial engagement so that the chemical agent is adjacent to the heated base. The spacing is varied by relatively movable cooperating formations on the wall portions of the two housing sections which guide and facilitate movement of the first housing section with respect to the second housing section. In a preferred embodiment the cooperating formations are cooperating threads on the surfaces of the wall portions.
    • 一种用于发射化学试剂的设备包括由第一和第二同轴壳体部分限定的壳体,该第一和第二同轴壳体部分以端对端接合方式容纳,第二壳体部分中的加热元件。 改变供给化学试剂的热量,从而可以控制蒸发速率。 第一容纳部分包括通气基部和连接到基部的壁部,以便限定用于接收挥发性化学试剂的凹部。 化学试剂或其载体固定在凹槽内。 第二壳体部分包括固体基部和连接到基部的壁部。 电加热器元件嵌入在第二壳体部分的基部内,使得其与基部表面电隔离。 每个部分的壁部分被共同接合,使得化学试剂与加热的基底相邻。 间隔通过在两个壳体部分的壁部分上的相对可移动的协作结构变化,其引导并促进第一壳体部分相对于第二壳体部分的移动。 在优选实施例中,配合结构是在壁部分的表面上的配合螺纹。