US Patent 9322568 Whole house ventilation system
Patent 9322568 was granted and assigned to Field Controls on April, 2016 by the United States Patent and Trademark Office.
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A control system is disclosed for a house HVAC system including a thermostat, supply and return air plenums and an HVAC fan. The thermostat selectively controls the HVAC system to maintain the desired temperature and resulting in a variable operating cycle period between successive on times. A fresh air intake duct is between an exterior intake vent and the return air plenum. A stale air exhaust duct is between the return air plenum and an exterior exhaust vent. The control system comprises a controllable intake damper in the fresh air intake duct and a controllable exhaust damper in the stale air exhaust duct. A controller is operatively connected to the house HVAC fan and the controllable dampers. The controller predicts an upcoming cycle period for a next successive operating cycle and calculates a fresh air vent time.
US Patent 09322568 Whole house ventilation system US Patent 9322568 Whole house ventilation system
US Patent 09322568 Whole house ventilation system
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