Control method for air conditioner

Abstract

The air conditioner includes a compressor and an indoor unit. The method includes: obtaining a coil temperature of the indoor unit and selectively adjusting the frequency of the compressor according to the coil temperature of the indoor unit. According to the method, the operating frequency of the compressor is adjusted by determining a temperature interval in which the coil temperature of the indoor unit is, so as to avoid the icing of the indoor unit of the air conditioner, thereby effectively solving the icing problem of the indoor unit of the air conditioner, and also improving the operation stability and reliability of the air conditioner.

1 - 6 . (canceled) 
     
     
         7 . A control method for an air conditioner, the air conditioner including a compressor and an indoor unit, the control method comprising:
 acquiring coil temperature of the indoor unit; and   selectively adjusting frequency of the compressor according to the coil temperature of the indoor unit.   
     
     
         8 . The control method according to  claim 7 , wherein selectively adjusting frequency of the compressor according to the coil temperature of the indoor unit comprises:
 operating the compressor at a decreased frequency if the coil temperature of the indoor unit is lower than a first preset temperature.   
     
     
         9 . The control method according to  claim 8 , wherein “selectively adjusting frequency of the compressor according to the coil temperature of the indoor unit further comprises:
 maintaining the operating frequency of the compressor unchanged if the coil temperature of the indoor unit is higher than or equal to the first preset temperature and lower than or equal to a second preset temperature, 
 wherein the first preset temperature is lower than the second preset temperature. 
 
     
     
         10 . The control method according to  claim 9 , wherein selectively adjusting frequency of the compressor according to the coil temperature of the indoor unit further comprises:
 operating the compressor at an increased frequency if the coil temperature of the indoor unit is higher than the second preset temperature and lower than or equal to a third preset temperature,   wherein the second preset temperature is lower than the third preset temperature.   
     
     
         11 . The control method according to  claim 7 , further comprising:
 after the compressor has been operated for a first preset duration, if the coil temperature of the indoor unit is lower than a fourth preset temperature for a second preset duration, stopping operation of the compressor for a third preset duration.   
     
     
         12 . The control method according to  claim 11 , further comprising:
 after stopping the operation, if the coil temperature of the indoor unit becomes higher than or equal to a fifth preset temperature, resuming the operation of the compressor,   wherein the fourth preset temperature is lower than the fifth preset temperature.   
     
     
         13 . A control method for an air conditioner, the air conditioner including a compressor and an indoor unit, the control method comprising:
 acquiring coil temperature of the indoor unit;   operating the compressor at a decreased frequency, if the coil temperature of the indoor unit is lower than a first preset temperature;   maintaining an operating frequency of the compressor unchanged if the coil temperature of the indoor unit is higher than or equal to the first preset temperature and lower than or equal to a second preset temperature which is higher than the first preset temperature;   operating the compressor at an increased frequency if the coil temperature of the indoor unit is higher than the second preset temperature and lower than or equal to a third preset temperature which is higher than the second preset temperature;   after the compressor has been operated for a first preset duration, if the coil temperature of the indoor unit is lower than a fourth preset temperature for a second preset duration, stopping operation of the compressor for a third preset duration; and   after stopping the operation, if the coil temperature of the indoor unit becomes higher than or equal to a fifth preset temperature which is higher than the fourth preset temperature, resuming the operation of the compressor.