Patent ID: 11859837
Assignee: RHEEM MANUFACTURING COMPANY
Field: Thermal processes and apparatus (Mechanical engineering)
Classification: CPC F | IPC F

Claim 15:
16. A heating, ventilation, and air conditioning (HVAC) system comprising:
a heat exchanger;
an air moving device configured to move air across an outer surface of the heat exchanger; and
a perforated plate configured to direct a flow of the air moved across the outer surface of the heat exchanger, the perforated plate comprising:
a first portion having a first plurality of perforations having a first cumulative flow area, and a second portion having a second plurality of perforations having a second cumulative flow area,
wherein the first cumulative flow area is greater than the second cumulative flow area and is configured to permit a greater amount of the air to pass across the outer surface of the heat exchanger than the second cumulative flow area; and

an economizer comprising a sliding door configured to be transitioned between a closed position and an open position, the sliding door comprising:
a first portion forming a barrier, and a second portion comprising at least one aperture, wherein when the sliding door is in the closed position, the first portion is aligned with an air inlet of the heat exchanger in a vertical orientation, and the second portion is disposed in a first non-vertical orientation, and
when the sliding door is in the open position, the second portion is aligned with the air inlet of the heat exchanger in the vertical orientation, and the first portion is disposed in a second non-vertical orientation.