Control scheme for automatic fan mode for use with variable refrigerant flow systems

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United States of America Patent

PATENT NO 11397040
APP PUB NO 20210140700A1
SERIAL NO

16677964

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Abstract

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An HVAC system includes an outdoor heat exchanger. A first indoor heat exchanger is fluidly coupled to the outdoor heat exchanger and disposed in a first zone. A second indoor heat exchanger is fluidly coupled to the outdoor heat exchanger and disposed in a second zone. A compressor is fluidly coupled to the outdoor heat exchanger, the first indoor heat exchanger, and the second indoor heat exchanger. A first zone controller is electrically coupled to the first indoor heat exchanger. The first zone controller is configured to measure a temperature in the first zone, compare the measured temperature to a setpoint temperature of the first zone, and responsive to a difference between the measured temperature and the setpoint temperature, adjust a speed of a first circulation fan independent of the speed of a second circulation fan.

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Patent Owner(s)

Patent OwnerAddress
LENNOX INDUSTRIES INC2140 LAKE PARK BLVD RICHARDSON TX 75080

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hobson, Ben Dallas, US 2 0
Hung, Der-Kai Dallas, US 35 151
Lan, Lin Colleyville, US 24 66
Lian, Hongbing Plano, US 7 17
Markarian, Shahn Dallas, US 2 0
Mersh, Steve Murfreesboro, US 2 0

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