Air conditioner current loop communication circuit and air conditioner
AssigneesGd Midea Air-Conditioning Equipment Co., Ltd., Midea Group Co., Ltd.
InventorsLizhi Su, Zhaojing Huo
Life of this patent
Estimating the term…
Abstract
An air conditioner current loop communication circuit includes an indoor unit current loop communication circuit and an outdoor unit current loop communication circuit connected to each other via a communication connection wire and an AC power connection wire to form a current loop communication loop, an indoor microcontroller unit (MCU) and an outdoor MCU configured to communicate with each other through the current loop communication loop, and a switching power supply circuit connected in series to the communication connection wire or the AC power connection wire and configured to output a DC power to the current loop communication loop.
Claims15
An air conditioner current loop communication circuit comprising:
- an indoor unit current loop communication circuit and an outdoor unit current loop communication circuit connected to each other via a communication connection wire and an AC power connection wire to form a current loop communication loop, the AC power connection wire including an AC power live wire;
- an indoor microcontroller unit (MCU) and an outdoor MCU configured to communicate with each other through the current loop communication loop;
- and
- a switching power supply circuit connected in series to the communication connection wire or the AC power connection wire, and configured to output a DC power to the current loop communication loop, a positive pole of an output end of the switching power supply circuit being connected to the AC power live wire, and a negative pole of the output end of the switching power supply circuit being connected to the indoor unit current loop communication circuit or the outdoor unit current loop communication circuit.
An air conditioner comprising:
- an indoor unit;
- an outdoor unit;
- and
- a current loop communication circuit configured to allow communication between the indoor unit and the outdoor unit, the current loop communication circuit including:
- an indoor unit current loop communication circuit and an outdoor unit current loop communication circuit connected to each other via a communication connection wire and an AC power connection wire to form a current loop communication loop, the AC power connection wire including an AC power live wire;
- an indoor microcontroller unit (MCU) and an outdoor MCU configured to communicate with each other through the current loop communication loop;
- and
- a switching power supply circuit connected in series to the communication connection wire or the AC power connection wire, and configured to output a DC power to the current loop communication loop, a positive pole of an output end of the switching power supply circuit being connected to the AC power live wire, and a negative pole of the output end of the switching power supply circuit being connected to the indoor unit current loop communication circuit or the outdoor unit current loop communication circuit.
An air conditioner current loop communication circuit comprising:
- an indoor unit current loop communication circuit and an outdoor unit current loop communication circuit connected to each other via a communication connection wire and an AC power connection wire to form a current loop communication loop;
- an indoor microcontroller unit (MCU) and an outdoor MCU configured to communicate with each other through the current loop communication loop;
- a switching power supply circuit connected in series to the communication connection wire or the AC power connection wire, and configured to output a DC power to the current loop communication loop;
- and
- a unidirectional protection circuit connected in series in the current loop communication loop to provide a unidirectional DC path for the current loop communication loop.
Dependencies are inferred from the claim text.