US 12,146,677 B2
Two-wire connection with component control
Matthew Clark, Rochester, NY (US); Eduardo Iturbide, Syracuse, NY (US); and Daniel Nocito, Stamford, CT (US)
Assigned to CARRIER CORPORATION, Palm Beach Gardens, FL (US)
Filed by Carrier Corporation, Palm Beach Gardens, FL (US)
Filed on Jan. 11, 2022, as Appl. No. 17/572,863.
Claims priority of provisional application 63/135,794, filed on Jan. 11, 2021.
Prior Publication US 2022/0221187 A1, Jul. 14, 2022
Int. Cl. F24F 11/88 (2018.01); H02M 7/5387 (2007.01); H04B 3/56 (2006.01)
CPC F24F 11/88 (2018.01) [H02M 7/53873 (2013.01); H04B 3/56 (2013.01); H04B 2203/5416 (2013.01)] 5 Claims
OG exemplary drawing
 
1. An HVAC system for providing component control over a two-wire connection, the system comprising:
a control unit connected to a power source;
an outdoor unit coupled to the control unit over the two-wire connection, the two-wire connection consisting of a power/communication wire and a common wire, the two-wire connection carrying an AC signal;
a bridge-type amplifier configured to receive a power signal from the remote unit, the bridge-type amplifier configured to generate a square wave from the power signal;
a compressor contactor located in the outdoor unit;
the bridge-type amplifier configured to provide the square wave to the compressor contactor to provide energy to the compressor contactor during a positive half cycle of the AC signal and a negative half cycle of the AC signal while maintaining the ability to communicate over the negative half cycle.