Patent ID: 11971180
Assignee: HISENSE (GUANGDONG) AIR CONDITIONER CO., LTD.
Field: Thermal processes and apparatus (Mechanical engineering)
Classification: CPC F | IPC F

Claim 0:
1. An outdoor unit of an air conditioner, comprising: an outdoor-unit main control circuit, a power supply, a power supply control circuit, and an outdoor-unit communication circuit;
the outdoor-unit main control circuit being configured to control operations of the power supply, the power supply control circuit and the outdoor-unit communication circuit, and control a communication between the outdoor unit of the air conditioner and an indoor unit of the air conditioner;
the outdoor-unit communication circuit being configured to communicate with the indoor unit of the air conditioner through a signal line connecting an indoor-unit communication circuit of the indoor unit of the air conditioner and the outdoor-unit communication circuit;
the power supply control circuit being disposed in a loop of a power supply line for supplying power to the power supply, and being configured to control the power supply line to supply power to the power supply by controlling on/off of the loop; and
the power supply being configured to supply power to the outdoor-unit main control circuit and the outdoor-unit communication circuit after receiving the power supplied from the power supply line, wherein
the power supply control circuit includes a first loop and a second loop; the first loop is a loop turned on under a control of a power supply control signal for supplying power to the power supply by the power supply line; the power supply control signal is a signal sent by the indoor-unit communication circuit to the power supply control circuit through the signal line; the second loop is a loop turned on under a control of an open-circuit control signal for supplying power to the power supply by the power supply line; and the open-circuit control signal is a signal sent by the outdoor-unit main control circuit to the power supply control circuit after the power supply is powered on through the first loop,
wherein the first loop includes a switch-type relay, and the second loop includes a normally closed changeover-type relay; the switch-type relay is configured to be turned on in response to the power supply control signal, so as to turn on the first loop; and the normally closed changeover-type relay is configured to switch a movable contact thereof from being connected to a normally closed contact thereof to being connected to a normally open contact thereof in response to the open-circuit control signal, so as to turn on the second loop and turn off the first loop.