| 摘要 |
An air circulation module (700) includes a housing and at least one fan (712) that is enclosed within the housing. The at least one fan (712) receives an airflow moving through the housing. An airflow re-circulation valve (701) that is disposed within the housing so as to not substantially interfere with the airflow moving through the housing. The airflow re-circulation valve (701) is selectively opened so as to divert a first portion of the airflow into and through the airflow re-circulation valve (701) and out of the housing via an exhaust port (713).
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