Patent ID: 11933509
Assignee: GD MIDEA HEATING & VENTILATING EQUIPMENT CO., LTD.
Field: Thermal processes and apparatus (Mechanical engineering)
Classification: CPC F  H  Y | IPC F  H

Claim 1:
2. A compressor driving device, used for driving a compressor of a refrigerating system, comprising:
a three-phase alternating current power supply input end;
a relay module;
a rectifier circuit; and
a driving control circuit which are sequentially connected, wherein:
the rectifier circuit is configured to convert a connected alternating current into a direct current and then output the direct current to a direct current bus;
the driving control circuit is configured to convert the direct current outputted by the direct current bus into compressor driving power to drive the compressor;
the compressor driving device further comprises a pressure switch,
the pressure switch is connected in series to a power supply circuit of the relay module, and configured to measure a pressure value in the refrigerating system and disconnect the power supply circuit of the relay module when the measured pressure value is greater than a preset pressure threshold; and
the driving control circuit is further configured to detect an on-off state of the pressure switch and control the compressor to stop working when the pressure switch is switched off, wherein a detection end of the driving control circuit is connected to the direct current bus,
the driving control circuit is further configured to detect a voltage of the direct current bus in real time, and control the compressor to stop working when it is detected that the voltage of the direct current bus drops to a first preset voltage value during the work of the compressor.