Ice melting method for air conditioner, and controller, air conditioner and computer-readable storage medium

Abstract

An ice melting method for an air conditioner, a controller, an air conditioner and a computer-readable storage medium are provided. The air conditioner includes a compressor, an outdoor heat exchanger, an indoor heat exchanger, an enthalpy-increasing system, a water-receiving tray and a gas bypass. The enthalpy-increasing system is provided with a flash evaporator, a one-way electromagnetic valve and a throttling device; a first refrigerant flow path is provided between the outdoor heat exchanger and the indoor heat exchanger; a second refrigerant flow path is provided between the flash evaporator and an enthalpy-increasing port of the compressor; the gas bypass is arranged on the first refrigerant flow path and is positioned between the enthalpy-increasing system and the indoor heat exchanger; the water-receiving tray is positioned below the outdoor heat exchanger; and the gas bypass is arranged on the water-receiving tray.

What is claimed is: 
     
         1 . An ice melting method for an air conditioner,
 wherein the air conditioner comprises a compressor, an outdoor heat exchanger, an indoor heat exchanger, an enthalpy increasing system, a water tray and a gas bypass; the enthalpy increasing system comprises a flash evaporator, a one-way electromagnetic valve and a throttling device; a first refrigerant flow path is arranged between the outdoor heat exchanger and the indoor heat exchanger, and the flash evaporator and the throttling device are arranged in the first refrigerant flow path; a second refrigerant flow path is arranged between the flash evaporator and an enthalpy increasing port of the compressor, and the one-way electromagnetic valve is arranged on the second refrigerant flow path; the gas bypass is arranged in the first refrigerant flow path and located between the enthalpy increasing system and the indoor heat exchanger; the water tray is located below the outdoor heat exchanger; and the gas bypass is arranged at the water tray;   wherein the ice melting method comprises:
 detecting an icing condition in the water tray; and 
 in response to the icing condition indicating ice existing in the water tray, adjusting an operating state of the air conditioner to improve heat supply of the gas bypass. 
   
     
     
         2 . The ice melting method of  claim 1 , wherein the air conditioner further comprises an ice detection sensor, and the detecting the icing condition in the water tray comprises:
 detecting resistance in the water tray through the ice detection sensor; and   in response to the resistance being higher than a preset resistance threshold, determining ice existing in the water tray.   
     
     
         3 . The ice melting method of  claim 2 , wherein the detecting the icing condition in the water tray further comprises:
 in response to the resistance being lower than or equal to the preset resistance threshold, determining ice not existing in the water tray.   
     
     
         4 . The ice melting method of  claim 1 , wherein the adjusting the operating state of the air conditioner comprises:
 maintaining the one-way electromagnetic valve open and maintaining the opening degree of the throttling device; and   increasing the operating frequency of the compressor, decreasing a rotation speed of an indoor fan, and maintaining a rotation speed of an outdoor fan.   
     
     
         5 . The ice melting method of  claim 4 , wherein the decreasing the rotation speed of the indoor fan comprises:
 decreasing the rotation speed of the indoor fan to keep a temperature of the indoor heat exchanger higher than a first preset temperature.   
     
     
         6 . The ice melting method of  claim 1 , further comprising:
 re-detecting the resistance in the water tray at every preset time; and   determining whether to continue ice melting according to the detected resistance.   
     
     
         7 . The ice melting method of  claim 1 , further comprising:
 re-detecting a temperature in the water tray at every preset time; and   determining whether to continue ice melting according to the detected temperature.   
     
     
         8 . The ice melting method of  claim 1 , wherein the throttling device comprises a first throttling device, arranged in the first refrigerant flow path and located between the outdoor heat exchanger and the flash evaporator. 
     
     
         9 . The ice melting method of  claim 1 , wherein the throttling device comprises a second throttling device, arranged in the first refrigerant flow path and located between the flash evaporator and the gas bypass. 
     
     
         10 . A controller comprising:
 a memory; and   at least one processor,   wherein a computer program is stored in the memory and executable by the at least one processor, and   wherein when executing the computer program, the at least one processor performs the ice melting method for an air conditioner of  claim 1 .   
     
     
         11 . An air conditioner comprising the controller of  claim 10 . 
     
     
         12 . A non-transitory computer-readable storage medium storing computer-executable instructions configured to execute the ice melting method for an air conditioner of  claim 1 .