Method and device for controlling expansion valve

Abstract

The present disclosure discloses a method and a device for controlling an expansion valve. The method includes: when a first specified number of indoor units are in a non-working state, turning off expansion valves corresponding to all the indoor units in the non-working state; and turning on expansion valves corresponding to a second specified number of indoor units in the non-working state in turn according to a predetermined cycle.

What is claimed is: 
     
         1 . A method for controlling an expansion valve, comprising:
 when a first specified number of indoor units are in a non-working state, turning off expansion valves corresponding to all the indoor units in the non-working state; and   turning on expansion valves corresponding to a second specified number of indoor units in the non-working state in turn according to a predetermined cycle.   
     
     
         2 . The method according to  claim 1 , wherein after the turning off expansion valves corresponding to all the indoor units in the non-working state, the method further comprises:
 adjusting a working frequency of a compressor of an outdoor unit according to the number of indoor units in the non-working state.   
     
     
         3 . The method according to  claim 2 , wherein the adjusting the working frequency of the compressor of the outdoor unit according to the number of indoor units in the non-working state comprises:
 obtaining the number of indoor units in the non-working state; and   adjusting the working frequency of the compressor of the outdoor unit according to a formula X=X 1 −N*A,   where X is a target working frequency, X 1  is a normal working frequency of the outdoor unit, N is the number of indoor units in the non-working state, and A is an adjustment coefficient.   
     
     
         4 . The method according to  claim 3 , wherein the turning on expansion valves corresponding to the second specified number of indoor units in the non-working state in turn according to the predetermined cycle comprises:
 turning on the expansion valves corresponding to the second specified number of indoor units in the non-working state in turn according to the predetermined cycle to a specified threshold.   
     
     
         5 . The method according to  claim 4 , wherein before the turning off expansion valves corresponding to all the indoor units in the non-working state, the method further comprises:
 determining whether the number of indoor units currently in a working state exceeds a third specified number; and   when it is determined that the number of indoor units currently in the working state does not exceed the third specified number, turning off the expansion valves corresponding to all the indoor units in the non-working state.   
     
     
         6 . A device for controlling an expansion valve, comprising:
 a processor; and   a memory for storing instructions executable by the processor;   wherein the processor is configured to:   when a first specified number of indoor units are in a non-working state, turn off expansion valves corresponding to all the indoor units in the non-working state; and   turn on expansion valves corresponding to a second specified number of indoor units in the non-working state in turn according to a predetermined cycle.   
     
     
         7 . The device according to  claim 6 , wherein the processor is further configured to:
 adjust a working frequency of a compressor of an outdoor unit according to the number of indoor units in the non-working state.   
     
     
         8 . The device according to  claim 7 , wherein the processor is further configured to:
 obtain the number of indoor units in the non-working state; and   adjust the working frequency of the compressor of the outdoor unit according to a formula X=X 1 −N*A,   where X is a target working frequency, X 1  is a normal working frequency of the outdoor unit, N is the number of indoor units in the non-working state, and A is an adjustment coefficient.   
     
     
         9 . The device according to  claim 8 , wherein the processor is further configured to:
 turn on the expansion valves corresponding to the second specified number of indoor units in the non-working state in turn according to the predetermined cycle to a specified threshold.   
     
     
         10 . The device according to  claim 9 , wherein the processor is further configured to:
 determine whether the number of indoor units currently in a working state exceeds a third specified number; and   when it is determined that the number of indoor units currently in the working state does not exceed the third specified number, turn off the expansion valves corresponding to all the indoor units in the non-working state.   
     
     
         11 . A non-transitory computer-readable storage medium comprising instructions that, when executed by a processor of a device for controlling an expansion valve, cause the device to perform a method comprising:
 when a first specified number of indoor units are in a non-working state, turning off expansion valves corresponding to all the indoor units in the non-working state; and   turning on expansion valves corresponding to a second specified number of indoor units in the non-working state in turn according to a predetermined cycle.