US 11,933,509 B2
Compressor driving device, compressor pressure protection method, and air conditioner
Kai Liu, Foshan (CN)
Assigned to GD MIDEA HEATING & VENTILATING EQUIPMENT CO., LTD., Foshan (CN); and MIDEA GROUP CO., LTD., Foshan (CN)
Filed by GD Midea Heating & Ventilating Equipment Co., Ltd., Foshan (CN); and Midea Group Co., Ltd., Foshan (CN)
Filed on Sep. 29, 2021, as Appl. No. 17/489,497.
Application 17/489,497 is a continuation of application No. PCT/CN2020/077829, filed on Mar. 4, 2020.
Claims priority of application No. 201910855486.X (CN), filed on Sep. 9, 2019.
Prior Publication US 2022/0018563 A1, Jan. 20, 2022
Int. Cl. F24F 11/32 (2018.01); F24F 11/86 (2018.01); F24F 11/88 (2018.01); F24F 140/12 (2018.01); H02P 27/06 (2006.01)
CPC F24F 11/32 (2018.01) [F24F 11/86 (2018.01); F24F 11/88 (2018.01); H02P 27/06 (2013.01); F24F 2140/12 (2018.01)] 10 Claims
OG exemplary drawing
 
1. 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.