Patent ID: 11892189
Assignee: JOHNSON CONTROLS TYCO IP HOLDINGS LLP
Field: Thermal processes and apparatus (Mechanical engineering)
Classification: CPC F  G | IPC F  G

Claim 14:
15. A terminal unit of a heating, ventilation, and/or air conditioning (HVAC) system, the terminal unit comprising:
a housing defining a first chamber and a second chamber of an airflow path with a separating wall partially separating the first chamber from the second chamber, wherein a conditioned air inlet opening into the first chamber, a return air inlet opening into the second chamber, and an air outlet are formed in panels of the housing;
a fan disposed in the first chamber and configured to bias an airflow from the conditioned air inlet to the air outlet; and
an inlet diffuser disposed in the first chamber of the airflow path adjacent to the conditioned air inlet and between the conditioned air inlet and the air outlet, wherein the inlet diffuser is coupled to a first corner of the first chamber and to a mid-section of a housing wall extending from and partially defining the a second corner of the first chamber, and wherein the inlet diffuser includes a first layer of perforated metal and a second layer of perforated metal disposed between the fan and the first layer of perforated metal such that the first layer of perforated metal and the second layer of perforated metal are arranged in series relative to the airflow and configured to enable the airflow to pass therethrough.