AIR DISTRIBUTOR Russian patent published in 2013 - IPC F24F13/00 

FIELD: ventilation.

SUBSTANCE: air distributor includes a casing with a diffuser at the outlet and a cylindrical branch pipe coaxially arranged with the casing, to which an air pipeline through which the air is supplied from the air conditioning system is connected tangentially, thus forming vortex jets. Air is supplied from the room to the casing through another air pipeline connected to the casing tangentially as well and equipped with an axial fan, and swirls in the same direction; the amount of air can be changed depending on temperature difference between the air of the room and plenum air, which is fixed with two temperature sensors, one of which is installed at the outlet of the air distributor, and the other one is installed in the room. Signals from the sensors are supplied to a comparison device that supplies commands to a frequency convertor to change the frequency of the voltage supplied to the axial fan electric motor, thus changing the number of revolutions of the latter, and therefore, its capacity.

EFFECT: automatic control of temperature difference between plenum air and recirculating air till the specified value of that difference is achieved by changing the amount of air from the room, which is added to plenum air; providing mixing of both air flows and quick damping of velocities of vortex air jets leaving the air distributor.

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