| 摘要 |
The humidity in an equipment housing, 1, is reduced by providing a humidity pump which extracts humidity from the closed housing and vents it to the outside atmosphere. A tube 2 passes through a wall 11 of the housing and is open to the internal and external atmospheres. The tube 2 contains a first portion of hygroscopic regenerative desiccant 4 to absorb moisture in the housing. Wicking material 10 transfers the moisture to a second portion of regenerative desiccant 7. A heater 8 drives off the moisture from portion 7 creating a "moisture gradient" whereby moisture is continuously drawn off from the inside of the housing.
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