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Variable air volume ceiling diffuser

  • US 20060243814A1
  • Filed: 12/05/2005
  • Published: 11/02/2006
  • Est. Priority Date: 04/29/2005
  • Status: Active Grant
First Claim
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1. A ceiling diffuser comprising:

  • a. a diffuser hood with an air inlet for receiving warm or cool air from a duct and an air outlet for discharging the warm or cool air into an occupied space;

    b. a base plate supported within the diffuser hood;

    c. a damper stack extending between the base plate and the air inlet d. a damper movably mounted on the damper stack for opening and closing the air inlet;

    e. a supply temperature actuator for sensing the temperature of the warm or cool air received from the duct f. a room temperature actuator for sensing the temperature in the occupied space;

    g. a linkage for moving the damper on the damper stack to open and close the air inlet, wherein the linkage has a heating mode and a cooling mode that are selected by the supply temperature actuator and wherein the linkage includes;

    i. a heating slide connected to the room temperature actuator;

    ii. a cooling slide connected to the room temperature actuator;

    iii. a cam actuator alternatively driven by the heating slide and the cooling slide;

    iv. a cam lift profile driven by the cam actuator that engages the damper to move the damper to open and close the air inlet.

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