Liquid return prevention control method and device of air conditioner and air conditioner

The invention provides a liquid return prevention control method and device of an air conditioner and the air conditioner. The method comprises the steps that S1, the current change state of the compressor is obtained after the compressor operates stably; and S2, according to the fact that the curre...

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Bibliographische Detailangaben
Hauptverfasser: ZHANG JIE, ZHANG RUITAI, LI YUGE, WANG TIEWEI
Format: Patent
Sprache:chi ; eng
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Beschreibung
Zusammenfassung:The invention provides a liquid return prevention control method and device of an air conditioner and the air conditioner. The method comprises the steps that S1, the current change state of the compressor is obtained after the compressor operates stably; and S2, according to the fact that the current drop amount of the compressor within the set time length is larger than or equal to the set drop amount, the refrigerant flow of the air conditioner refrigeration system is adjusted to be reduced, and the reduction amount of the refrigerant flow is determined according to the current drop amount. According to the liquid return prevention control method provided by the invention, when the air conditioner has special conditions such as emergency shutdown or heavy load shedding, the refrigerant flow of the refrigerating system is controlled to be reduced, and the reduction amount of the refrigerant flow can be determined according to the change of the working parameters of the compressor; therefore, the current ref