Patent ID: 7582008

Claim:
A centralized air distribution, recirculation and discharge device intended to serve a number of user installations each having an intake channel and a discharge channel, said centralized device comprising only one single manifold for the reception, delivery and discharge of air-carrier mixture from and to the installations and a discharge fan connected to said single manifold, the discharge fan is controlled by a pressure detector for maintaining a constant depression in the single manifold, said centralized device further comprising for each installation: a device for air supply connected to said single manifold and having a fresh air suction channel and an air supply channel, a supply fan connected to said air supply device, a heater connected to said supply fan, said intake channel of the installation being connected to said heater, a discharge device connected to said discharge channel of the installation, connected to said manifold and comprising a discharge channel, and a recirculation device comprising a recirculation channel connected to said air supply device and to said discharge device.