| CPC F24F 11/39 (2018.01) [F24F 11/64 (2018.01); F24F 11/65 (2018.01); F24F 11/89 (2018.01); F24F 2110/64 (2018.01)] | 20 Claims |
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1. A heating, ventilation, and air conditioning (HVAC) system, comprising:
an evaporator coil configured to receive an airflow and to transfer heat from the received airflow to a flow of refrigerant;
a compressor configured to receive the flow of refrigerant from the evaporator coil and to discharge the flow of refrigerant at a higher pressure;
a first sensor housing disposed upstream of the evaporator coil, comprising:
a first air quality sensor configured to detect a quantity of particulate matter within the airflow; and
a first controller operably coupled to the first air quality sensor, comprising:
a first memory configured to store a first plurality of particulate matter measurements; and
a first processor configured to receive the first plurality of particulate matter measurements from the first air quality sensor;
a second sensor housing disposed between the first sensor housing and the evaporator coil, comprising:
a second air quality sensor configured to detect the quantity of particulate matter within the airflow; and
a second controller operably coupled to the second air quality sensor, comprising:
a second memory configured to store a second plurality of particulate matter measurements; and
a second processor configured to receive the second plurality of particulate matter measurements from the second air quality sensor; and
a unit controller operably coupled to both the first controller and the second controller, comprising:
a unit memory configured to store a look-up table associated with the quantity of particulate matter; and
a unit processor operably coupled to the unit memory, configured to:
operate the HVAC system in a first mode of operation, wherein operating the HVAC system in the first mode of operation comprises sending a command to actuate the evaporator coil and the compressor;
receive the first plurality of plurality of particulate matter measurements from the first controller and the second plurality of particulate matter measurements from the second controller;
determine if the quantity of particulate matter in the airflow exceeds a first threshold value based on the received second plurality of particulate matter measurements; and
in response to determining that the quantity of particulate matter in the airflow does exceed the first threshold value, transmit a notification indicating an action to inspect an air filter.
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