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Clean room air system

  • US 5,014,608 A
  • Filed: 08/17/1990
  • Issued: 05/14/1991
  • Est. Priority Date: 04/27/1989
  • Status: Expired due to Fees
First Claim
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1. A ventilation system for a clean room comprising:

  • a centrifugal blower, said blower including a rotary bladed wheel having an axis of rotation, a baffle in the form of a surface of rotation concentrically disposed relative to said axis for permitting the volume of air moved by said blower to be controlled, and means permitting telescopic movement of the baffle relative to the wheel to vary the volume of air moved by said blower;

    a plenum through which air can move from the blower to an area above the room;

    a suspended ceiling separating the plenum and the room, said ceiling being comprised of a plurality of panels that each includes a particulate filter and an adjustable baffle for controlling the rate of air flow therethrough, the baffles being each individually controllable to establish a desired ratio between the air flows through the panels; and

    said baffle in the centrifugal blower being controllable independently of the baffles in the panels to permit a localized change in clean room air flow by controlling one or more of the panel baffles, and to permit a generalized change in clean room air flow by controlling the blower baffle.

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