Patent ID: 9719525
Date: 2017-08-01
CPC Classifications: F04D,F04F,F05D

Claim:
1. A ceiling mounted air circulating device comprising: a ceiling plate with a top surface intended to be mounted coplanar to a ceiling; an impeller with a central axis extending downward perpendicular to the ceiling, the impeller configured to draw air in through an air inlet; a plenum chamber configured to receive air from the impeller, the plenum chamber comprising first and second fixed sections and a repositionable section; wherein the repositionable section is configured to move from a first position adjacent to the first fixed section, to a second position adjacent to the second fixed section; a flow guide located at a periphery of the air circulating device relative to the plenum chamber, the flow guide defining an airflow channel, the airflow channel comprising a first opening and a second opening; wherein said air impeller pressurizes air within the plenum chamber, from which air is subsequently discharged to the airflow channel, as a primary airflow, tangent to a cambered surface, establishing a wall jet which is fluidly attached to said cambered surface and causes ambient air to be entrained in the airflow channel; wherein, when the repositionable section is in the first position, the cambered surface is formed from the first fixed section and the repositionable section, and ambient air is entrained from the first opening of the airflow channel; wherein, when the repositionable section is in the second position, the cambered surface is formed from the second fixed section and the repositionable section, and ambient air is entrained from the second opening of the airflow channel.