US 11,933,516 B2
Redundant power supply for HVAC system including refrigerant leakage mitigation
Xu She, Cohoes, NY (US); HanJong Kim, Avon, CT (US); and David Ginsberg, Granby, CT (US)
Assigned to Carrier Corporation, Palm Beach Gardens, FL (US)
Filed by Carrier Corporation, Palm Beach Gardens, FL (US)
Filed on Oct. 28, 2020, as Appl. No. 17/082,101.
Claims priority of provisional application 62/931,336, filed on Nov. 6, 2019.
Prior Publication US 2021/0131696 A1, May 6, 2021
Int. Cl. F24F 11/36 (2018.01); F24F 11/38 (2018.01); F24F 11/72 (2018.01); F24F 11/88 (2018.01); H02M 7/217 (2006.01); H02M 7/537 (2006.01)
CPC F24F 11/88 (2018.01) [F24F 11/36 (2018.01); F24F 11/38 (2018.01); F24F 11/72 (2018.01); H02M 7/217 (2013.01); H02M 7/537 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A heating ventilation and cooling (HVAC) system comprising:
an air-conditioning unit containing a fan blower motor;
a power source including:
a multi-phase power input
an AC-DC rectifier connected to a DC-AC inverter via a DC bus,
a multi-phase power output connecting the DC-AC inverter to the fan blower motor, and
at least one redundancy power system configured to bypass at least one of the AC-DC rectifier and the DC-AC inverter; and
a controller configured to control operations of the HVAC system, the controller further configured to:
maintain the fan blower motor in a continuous operating state in response to a signal indicative of a refrigerant leak, and
activate the at least one redundancy power system in response to the presence of both a detected failure in the power source and the signal indicative of the refrigerant leak.