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 0:
1. A heating, ventilation, and/or air conditioning (HVAC) system, comprising:
an enclosure defining a chamber having a first corner and a second corner opposing the first corner;
a fan disposed in the chamber and configured to provide an airflow through the HVAC system by drawing the airflow into a fan inlet and expelling the airflow out of a fan outlet; and
an inlet diffuser disposed in the chamber upstream of the fan inlet relative to a direction of the airflow, wherein the inlet diffuser is coupled to the enclosure at the first corner of the chamber and at a mid-section of an enclosure wall extending from and partially defining the second corner of the chamber, and the inlet diffuser includes a first layer of perforated metal and a second layer of perforated metal disposed adjacent to 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.