CPC F04D 27/004 (2013.01) [F04D 17/025 (2013.01); F04D 25/088 (2013.01); F04D 29/403 (2013.01); F04D 29/661 (2013.01)] | 9 Claims |
1. An apparatus, comprising:
a first housing having a first cavity;
a second housing disposed in the first housing and including a second cavity and at least one aperture, wherein the second housing includes a base assembly and a cover assembly that is rotatably attached to the base assembly;
a first fan assembly disposed in the first housing, wherein the first fan assembly is configured to generate a first airflow through the first housing;
a second fan assembly disposed in the second cavity of the second housing, wherein the second fan assembly is configured to generate a second airflow from the second cavity to the first cavity via the at least one aperture;
a first motor positioned between the first fan assembly and an inner side of the second fan assembly; and
a second motor positioned such that either the first fan assembly or the second fan assembly is located between the first motor and the second motor.
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