Variable-air-volume diffuser with independent ventilation air as

Details Variable-air-volume diffuser with independent ventilation air as Variable-air-volume diffuser with independent ventilation air as

1997-07-07

1999-01-19

Tapolcai, William E.

Automatic temperature and humidity regulation

Ventilator type

Electrically actuated

236 495, 236DIG19, F24F 1316

Patent

active

058605924

ABSTRACT:
A variable-air-volume (VAV) conditioning system having at least one diffuser (27a-27d) for discharging supply air (SA) into a room (22a-22d) a flow control element (53) movably mounted in the diffuser for control of the volume of supply air (SA) discharged from the diffuser (27a-27d) in response to thermal loading in the room (22a-22d). The VAV system also includes a ventilation air source (41), independent of the supply air source (23), which is fluid coupled to a ventilation air opening defining structure (59), such as a nozzle, located in the diffuser housing (15) at a position downstream of the flow control element (53). A method for ensuring the flow of ventilation air (VA) into a room (22a-22d) including the step of discharging ventilation air (VA) through a ventilation air opening device (59) positioned in the diffuser housing (15) downstream of the diffuser flow control element (53) so that ventilation air flow is controlled independently of, and decoupled from, the variable flow rate of supply air (SA) which is controlled by the flow control element (53).

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patent: 4821955 (1989-04-01), Kline et al.

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