Methods and systems for controlling an air conditioner

Abstract

A method for controlling an air conditioner having an indoor unit(s) and at least two temperature sensors. The at least two temperature sensors are configured to obtain at least two corresponding temperature parameter values in the indoor unit, and the method includes: obtaining a fault parameter value in the at least two temperature parameter values in response to any one of the at least two temperature sensors being in a fault state; obtaining a parameter substitution value corresponding to the fault parameter value according to operating parameters of the air conditioner; and controlling the air conditioner to be operated according to the parameter substitution value.

1 . A method for controlling an air conditioner, comprising:
 in accordance with a determination that one of at least two temperature sensors of the air conditioner having an indoor unit is in a fault state: obtaining a fault parameter value in at least two temperature parameter values, wherein the at least two temperature sensors are configured to obtain the at least two temperature parameter values corresponding to the at least two temperature sensors in the indoor unit;   obtaining a parameter substitution value corresponding to the fault parameter value according to operating parameters of the air conditioner; and   controlling the air conditioner based on the parameter substitution value.   
     
     
         2 . The method according to  claim 1 , wherein the indoor unit comprises a heat exchanger, the at least two temperature sensors comprise a first temperature sensor, a second temperature sensor and a third temperature sensor, the first temperature sensor and the second temperature sensor are arranged at two ends of the heat exchanger respectively, the third temperature sensor is arranged at an air inlet of the indoor unit, and obtaining the fault parameter value in the at least two temperature parameter values comprises:
 determining whether the first temperature sensor, the second temperature sensor, and the third temperature sensor are in a fault state; and   determining the fault parameter value according to the fault state;   wherein the fault parameter value comprises a temperature value at a refrigerant inlet, a temperature value at a refrigerant outlet, and an ambient temperature value.   
     
     
         3 . The method according to  claim 2 , wherein prior to obtaining the parameter substitution value corresponding to the fault parameter value according to the operating parameters of the air conditioner, the method further comprises:
 controlling the air conditioner to be operated in a preset operation mode; and   obtaining the operating parameters of the air conditioner in the preset operation mode, wherein the preset operation mode comprises a refrigeration mode and a heating mode.   
     
     
         4 . The method according to  claim 3 , wherein the first temperature sensor is in the fault state, the air conditioner comprises at least two indoor units, and obtaining the parameter substitution value corresponding to the fault parameter value according to the operating parameters of the air conditioner comprises:
 determining the fault parameter value as the temperature value at the refrigerant outlet and obtaining a number of the indoor units in an operation state in the air conditioner, based on an operation of the air conditioner in the heating mode;   obtaining a high-pressure saturation temperature, a target subcooling degree, a pressure value at the refrigerant outlet, and a preset amount of heat output of each of the at least two said indoor units; and   determining the parameter substitution value corresponding to the temperature value at the refrigerant outlet according to the number of the indoor units, the high-pressure saturation temperature, the target subcooling degree, the pressure value at the refrigerant outlet and the preset amount of heat output of each of the at least two said indoor units.   
     
     
         5 . The method according to  claim 4 , wherein determining the parameter substitution value corresponding to the temperature value at the refrigerant outlet comprises:
 determining the parameter substitution value corresponding to the temperature value at the refrigerant outlet according to the high-pressure saturation temperature and the target subcooling degree, when determining that the number of the indoor units is less than a preset number; or determining the parameter substitution value corresponding to the temperature value at the refrigerant outlet according to the pressure value at the refrigerant outlet and the preset amount of heat output, in accordance with a determination that the number of the indoor units is greater than or equal to the preset number.   
     
     
         6 . The method according to  claim 3 , wherein the first temperature sensor is in a fault state, obtaining the parameter substitution value corresponding to the fault parameter value according to the operating parameters of the air conditioner comprises:
 determining that the fault parameter value is the temperature value at the refrigerant inlet based on an operation of the air conditioner in the refrigeration mode;   obtaining the temperature value at the refrigerant outlet of the indoor unit every first preset time duration; and   determining the parameter substitution value corresponding to the temperature value at the refrigerant inlet according to the temperature value at the refrigerant outlet.   
     
     
         7 . The method according to  claim 6 , wherein the indoor unit comprises a draught fan, before obtaining the temperature value at the refrigerant outlet of the indoor unit, the method further comprises:
 controlling the draught fan to stop operation for a second preset time duration.   
     
     
         8 . The method according to  claim 3 , wherein the second temperature sensor is in a fault state, obtaining the parameter substitution value corresponding to the fault parameter value according to the operating parameters of the air conditioner comprises:
 determining the fault parameter value as the temperature value at the refrigerant inlet based on an operation of the air conditioner in the heating mode, and obtaining a high-voltage saturation temperature of the indoor unit; and   determining the parameter substitution value corresponding to the temperature value at the refrigerant inlet according to a high-pressure saturation temperature.   
     
     
         9 . The method according to  claim 3 , wherein the second temperature sensor is in a fault state, the air conditioner comprises at least two said indoor units, and obtaining the parameter substitution value corresponding to the fault parameter value according to the operating parameters of the air conditioner comprises:
 determining the fault parameter value as the temperature value at the refrigerant outlet based on an operation of the air conditioner in the refrigeration mode, and obtaining a number of the indoor units in an operation state in the air conditioner;   obtaining a temperature value at the refrigerant inlet, a target superheat degree, a preset amount of heat output, a temperature of an exhaust air and a target superheat degree of the exhaust air of a compressor of each of at least two said indoor units;   determining the parameter substitution value corresponding to the temperature value at the refrigerant outlet according to the number of the indoor units, the temperature value at the refrigerant inlet, the target superheat degree, the preset amount of heat output, the temperature value of the exhaust air, and the target superheat degree of the exhaust air of each of the at least two said indoor units.   
     
     
         10 . The method according to  claim 9 , wherein determining the parameter substitution value corresponding to the temperature value at the refrigerant outlet comprises:
 determining the parameter substitution value corresponding to the temperature value at the refrigerant outlet according to the temperature value at the refrigerant inlet and the target superheat degree, in accordance with a determination that the number of the indoor units is less than a preset number; or determining the parameter substitution value corresponding to the temperature value at the refrigerant outlet according to the superheat degree of the exhaust air, the temperature of the exhaust air, a temperature value at the refrigerant inlet and the target superheat degree, in accordance with a determination that the number of the indoor units is greater than or equal to the preset number.   
     
     
         11 . The method according to  claim 3 , wherein the third temperature sensor is in a fault state, and obtaining the parameter substitution value corresponding to the fault parameter value according to the operating parameters of the air conditioner comprises:
 determining the fault parameter value as the ambient temperature value;   obtaining the temperature value at the refrigerant outlet every third preset time duration; and   determining the parameter substitution value corresponding to the ambient temperature value according to the temperature value at the refrigerant outlet.   
     
     
         12 . The method according to  claim 11 , wherein prior to obtaining the temperature value at the refrigerant outlet, the method further comprises:
 controlling a throttle valve to disable a fourth preset time duration.   
     
     
         13 . The method according to  claim 2 , wherein determining fault states of the first temperature sensor, the second temperature sensor and the third temperature sensor specifically comprises:
 obtaining a numerical relationship between the temperature value at the refrigerant inlet, the temperature value at the refrigerant outlet and the ambient temperature value;   determining the fault state of the first temperature sensor, the fault state of the second temperature sensor, and the fault state of the third temperature sensor respectively according to the numerical relationship between the temperature value at the refrigerant inlet, the temperature value at the refrigerant outlet and the ambient temperature value.   
     
     
         14 . The method according to  claim 1 , further comprising:
 counting a time duration of an operation of the air conditioner which is controlled according to the parameter substitution value; and   controlling the air conditioner to stop operation in accordance with a determination that the time duration reaches a fourth preset time duration.   
     
     
         15 . An air conditioner, comprising:
 at least two indoor units;   a processor;   memory storing one or more programs, the one or more programs comprising instructions that, when executed by the processor, cause the one or more processors to perform operations comprising:
 in accordance with a determination that one of at least two temperature sensors of the air conditioner having an indoor unit is in a fault state: obtaining a fault parameter value in at least two temperature parameter values, wherein the at least two temperature sensors are configured to obtain the at least two temperature parameter values corresponding to the at least two temperature sensors in the indoor unit; 
 obtaining a parameter substitution value corresponding to the fault parameter value according to operating parameters of the air conditioner; and 
 controlling the air conditioner based on the parameter substitution value. 
   
     
     
         16 . A non-transitory computer-readable storage medium, storing a computer program, the computer program, when executed by one or more processors of an electronic device, cause the one or more processors to perform operations comprising:
 in accordance with a determination that one of at least two temperature sensors of an air conditioner having an indoor unit is in a fault state: obtaining a fault parameter value in at least two temperature parameter values, wherein the at least two temperature sensors are configured to obtain the at least two temperature parameter values corresponding to the at least two temperature sensors in the indoor unit;   obtaining a parameter substitution value corresponding to the fault parameter value according to operating parameters of the air conditioner; and   controlling the air conditioner based on the parameter substitution value.   
     
     
         17 . The air conditioner according to  claim 15 , wherein the indoor unit comprises a heat exchanger, the at least two temperature sensors comprise a first temperature sensor, a second temperature sensor and a third temperature sensor, the first temperature sensor and the second temperature sensor are arranged at two ends of the heat exchanger respectively, the third temperature sensor is arranged at an air inlet of the indoor unit, and obtaining the fault parameter value in the at least two temperature parameter values comprises:
 determining whether the first temperature sensor, the second temperature sensor, and the third temperature sensor are in a fault state; and   determining the fault parameter value according to the fault state;   wherein the fault parameter value comprises a temperature value at a refrigerant inlet, a temperature value at a refrigerant outlet, and an ambient temperature value.   
     
     
         18 . The air conditioner according to  claim 17 , wherein prior to obtaining the parameter substitution value corresponding to the fault parameter value according to the operating parameters of the air conditioner, the processor performs operations further comprising:
 controlling the air conditioner to be operated in a preset operation mode; and   obtaining the operating parameters of the air conditioner in the preset operation mode, wherein the preset operation mode comprises a refrigeration mode and a heating mode.   
     
     
         19 . The non-transitory computer-readable storage medium according to  claim 16 , wherein the indoor unit comprises a heat exchanger, the at least two temperature sensors comprise a first temperature sensor, a second temperature sensor and a third temperature sensor, the first temperature sensor and the second temperature sensor are arranged at two ends of the heat exchanger respectively, the third temperature sensor is arranged at an air inlet of the indoor unit, and obtaining the fault parameter value in the at least two temperature parameter values comprises:
 determining whether the first temperature sensor, the second temperature sensor, and the third temperature sensor are in a fault state; and   determining the fault parameter value according to the fault state;   wherein the fault parameter value comprises a temperature value at a refrigerant inlet, a temperature value at a refrigerant outlet, and an ambient temperature value.   
     
     
         20 . The non-transitory computer-readable storage medium according to  claim 19 , wherein prior to obtaining the parameter substitution value corresponding to the fault parameter value according to the operating parameters of the air conditioner, the one or more processors performs operations further comprising:
 controlling the air conditioner to be operated in a preset operation mode; and   obtaining the operating parameters of the air conditioner in the preset operation mode, wherein the preset operation mode comprises a refrigeration mode and a heating mode.