Dynamic particulate control system and method of operation

Details Dynamic particulate control system and method of operation Dynamic particulate control system and method of operation

1994-11-15

1996-07-23

Joyce, Harold

Ventilation

Having both inlet and outlet airways

Pressure regulation

454239, F24F 1100

Patent

active

055384714

ABSTRACT:
A dynamic particulate control system (12) is provided for controlling particulate levels in a room (14). The dynamic particulate control system (12) includes a supply blower assembly (22) that has a supply blower (30). The supply blower assembly (22) draws outside air and provides supply air to the room (14) at a supply flow rate dependent upon an operation speed of the supply blower (30). A first variable frequency drive (32) controls the operation speed of the supply blower (30). A return blower assembly (58) has a return blower (64). The return blower assembly (58) draws return air from the room (14) and dissipates exhaust air outside the room (14) at an exhaust flow rate dependent upon an operation speed of the return blower (64). A second variable frequency drive (66) controls the operation speed of the return blower (64). A plurality of sensors (72 through 92) periodically sample and measure system conditions and provide status signals. A controller (68) receives and processes the status signals. The controller (68) generates and provides control signals for the variable frequency drives (32 and 66) such that particulate levels in the room are dynamically controlled to remain at or below desired concentrations.

REFERENCES:
patent: 4817708 (1989-04-01), Ono et al.
patent: 4995307 (1991-02-01), Floyd
patent: 5205783 (1993-04-01), Diekert et al.

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