EVAPORATOR COIL PROTECTION FOR HVAC SYSTEMS

According to certain embodiments, a system comprises a controller and an HVAC system with components comprising an evaporator unit comprising an evaporator coil, an indoor fan, and a discharge air duct and a condenser unit comprising a compressor, a condenser coil, and an outdoor fan. The system is...

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Bibliographic Details
Main Authors Troxell, Marcus, Yap, Zer Kai, Toombs, William Clay, Liu, Wenqian
Format Patent
LanguageEnglish
Published 25.07.2019
Subjects
AIR-CONDITIONING, AIR-HUMIDIFICATION, VENTILATION, USE OF AIRCURRENTS FOR SCREENING
BLASTING
COLD ROOMS
COMBINED HEATING AND REFRIGERATION SYSTEMS
COOLING OR FREEZING APPARATUS NOT COVERED BY ANY OTHERSUBCLASS
HEAT PUMP SYSTEMS
HEATING
ICE-BOXES
LIGHTING
LIQUEFACTION SOLIDIFICATION OF GASES
MANUFACTURE OR STORAGE OF ICE
MECHANICAL ENGINEERING
RANGES
REFRIGERATION MACHINES, PLANTS OR SYSTEMS
REFRIGERATION OR COOLING
REFRIGERATORS
VENTILATING
WEAPONS
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Summary:According to certain embodiments, a system comprises a controller and an HVAC system with components comprising an evaporator unit comprising an evaporator coil, an indoor fan, and a discharge air duct and a condenser unit comprising a compressor, a condenser coil, and an outdoor fan. The system is configured to determine that a first or a second level of evaporator coil freeze risk is present and to communicate an instruction to the HVAC system with a first or a second action to counteract the freeze risk. For example, in certain embodiments, the actions comprise changing the indoor fan speed, changing the compressor speed, and changing the outdoor fan speed.
Bibliography:Application Number: US201815876687