Patent ID: 9644851
Date: 2017-05-09
CPC Classifications: F24F

Claim:
1. An occupied space ventilation system configured to perform a heating operation and a cooling operation, the system comprising: at least one supply register with a displacement-type diffuser for providing a flow of air heated and cooled by the system in a uniform direction, flowing substantially orthogonally to the diffuser, at a non-mixing flow rate that promotes stratification of air in the occupied space; at least one return register configured to withdraw air from said occupied space; a control system configured to control heated air to flow through said at least one supply register at the non-mixing rate that promotes the stratification of air in the occupied space; and a mixing fan disposed in said occupied space and operative to mix the heated air supplied from the at least one supply register with air in said occupied space, wherein the control system is additionally configured to detect that the system is operating in the heating operation and control said mixing fan to circulate the heated air supplied from the at least one supply register in said occupied space only during a heating mode of the ventilation system.