Patent ID: 11898799
Assignee: LG ELECTRONICS INC.
Field: Thermal processes and apparatus (Mechanical engineering)
Classification: CPC F | IPC F

Claim 0:
1. A method of controlling an RPM of a blower for a gas furnace that passes air to be supplied to a room around a heat exchanger of the gas furnace, the method comprising:
starting operation of the gas furnace;
measuring an air temperature at an outlet side of the gas furnace;
measuring the RPM of the blower;
determining whether the air temperature falls within a reference temperature range having a lower limit temperature and an upper limit temperature, or whether the air temperature is lower than the lower limit temperature of the reference temperature range,
in response to the determination that the air temperature is lower than the lower limit temperature and based on a determination that the blower is not operating, transmitting a first control signal to the blower and thereby maintaining an inoperative state of the blower,
in response to the determination that the air temperature is lower than the lower limit temperature and based on a determination that the blower is operating, transmitting a second control signal to the blower and thereby reducing a current RPM of the blower by a certain amount, and
in response to the determination that the air temperature falls within the reference temperature range having the lower limit temperature and the upper limit temperature, transmitting a third control signal to the blower and thereby maintaining a current RPM of the blower.