Two-wire connection with component control

Patent metadata

Field	Value
Publication number	US-12146677-B2
Application number	US-202217572863-A
Country	US
Kind code	B2
Filing date	Jan 11, 2022
Priority date	Jan 11, 2021
Publication date	Nov 19, 2024
Grant date	Nov 19, 2024

Abstract

Provided are embodiments for a system for providing component control over a two-wire connection. The embodiments can include a control unit connected to a power source, a remote unit coupled to the control unit over the two-wire connection, the two-wire connection including a power/communication wire and a common wire, and 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. Also provided are embodiments for a method for providing component control over a two-wire connection.

First claim

What is claimed is:

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.

2. The HVAC system of claim 1 , wherein the two-wire connection is a 2-wire buss configured to transmit power and communication data.

3. The HVAC system of claim 1 , wherein the two-wire connection provides power on the positive cycle of the power signal and communication data on the negative cycle of the power signal between the control unit and the remote unit.

4. The HVAC system of claim 1 , wherein the power signal is a direct current (DC) signal and the square wave is an alternating current (AC) signal.

5. The HVAC system of claim 1 , wherein the control unit is an indoor unit of the HVAC system.

Assignees

• Carrier Corp

Inventors

• Clark Matthew
• Iturbide Eduardo
• Nocito Daniel

Classifications

• H04B3/56 Primary

  Circuits for coupling, blocking, or by-passing of signals · CPC title

• H02M7/53873

  with digital control · CPC title

• H04B2203/5416

  by adding signals to the wave form of the power source · CPC title

• H02M7/5387

  in a bridge configuration · CPC title

• F24F11/88 Primary

  Electrical aspects, e.g. circuits · CPC title