Patent ID: 11920819
Assignee: LENNOX INDUSTRIES INC.
Field: Thermal processes and apparatus (Mechanical engineering)
Classification: CPC F  Y | IPC F

Claim 0:
1. A heating, ventilation and air conditioning (HVAC) system, comprising:
a blower configured to provide a flow of air across an evaporator of the HVAC system;
a variable-speed compressor configured to compress a refrigerant flowing through the HVAC system;
an indoor air temperature sensor positioned and configured to measure an indoor air temperature (IAT) of the enclosed space; and
a controller communicatively coupled to the blower, variable-speed compressor, the indoor air temperature sensor, and the discharge air temperature sensor, the controller comprising:
a memory configured to store an indoor temperature setpoint and a default discharge air temperature setpoint; and
a processor configured to:
receive the IAT;
determine, based on a difference between the received IAT and the indoor temperature setpoint, that the IAT is not within a threshold range of the indoor temperature setpoint;
after determining that the IAT is not within the threshold range of the indoor temperature setpoint, determine an adaptive discharge air temperature setpoint based on the default discharge air temperature setpoint and the difference between the received IAT and the indoor temperature setpoint;
determine a compressor speed at which to operate the variable-speed compressor based on the adaptive discharge air temperature setpoint; and
cause the variable-speed compressor to operate at the determined compressor speed.