Displacement diffuser

A diffuser for a heating, ventilation, and air conditioning (HVAC) system, comprising:

• a housing defining a plenum chamber, wherein the housing comprises a diffusion plate configured to direct a first air flow into the plenum chamber and to discharge a second air flow from the plenum chamber;
• a plenum plate disposed within the housing, wherein the plenum plate extends from a first side of the housing to a second side of the housing opposite the first side, and the plenum plate divides the plenum chamber into a first chamber and a second chamber;
• and
• a plurality of apertures disposed along the plenum plate, wherein the plurality of apertures is configured to direct a third air flow from the first chamber into the chamber draw the first air flow into the plenum chamber and to force the second air flow out of the plenum chamber,
• wherein the plenum plate comprises a plurality of first panels and a plurality of second panels arranged in an alternating arrangement.

A heating, ventilation, and air conditioning (HVAC) system, comprising:

• a diffuser configured to receive a first air flow from an air handling unit via ductwork;
• a housing of the diffuser, wherein the housing defines an interior chamber and comprises a diffusion plate;
• a plenum plate of the diffuser, wherein the plenum plate is disposed within the housing and divides the interior chamber into a first chamber and a second chamber, and the plenum plate comprises a stepped configuration with a plurality of first panels and a plurality of second panels disposed in an alternating arrangement;
• and
• a plurality of apertures formed in the plurality of second panels of the plenum plate, wherein the plurality of apertures is configured to direct the first air flow from the first chamber to the second chamber to induce a second air flow into the interior chamber and to discharge a third air flow from the interior chamber.

A heating, ventilation, and air conditioning (HVAC) system, comprising:

• an air handling unit configured to provide a first air flow;
• and
• a diffuser configured to receive the first air flow, induce a second air flow from a conditioned space and into the diffuser, and discharge a third air flow from the diffuser to the conditioned space, wherein the diffuser comprises:
• a housing defining a plenum chamber;
• a plenum plate configured to divide the plenum chamber into a first chamber and a second chamber;
• and
• a plurality of apertures formed in the plenum plate and configured to direct the first air flow from the first chamber to the second chamber to induce the second air flow and to discharge the third air flow, wherein the diffuser is configured to discharge the third air flow vertically below the second air flow induced into the diffuser,
• wherein the plenum plate extends from a top panel of the housing, the plenum plate comprises a stepped arrangement having a first plurality of panels and a second plurality of panels in an alternating arrangement, the first plurality of panels extend along a first direction of the first air flow received by the diffuser, the second plurality of panels extend along a second direction crosswise to the first direction, and the plurality of apertures is formed in the second plurality of panels.