Air conditioner and control method thereof

Abstract

An air conditioner includes a plurality of temperature sensors, a temperature sensor to-be-detected, and a controller. The plurality of temperature sensors include a first temperature sensor, and the first temperature sensor is configured to detect an ambient temperature in a case where a compressor is in a standby state. The temperature sensor to-be-detected is any of the plurality of temperature sensors and configured to detect a first current temperature of a corresponding region in a case where the compressor is in a running state. The controller is configured to: obtain a first temperature; obtain a second temperature; and determine that the temperature sensor to-be-detected is out of order if the first temperature is greater than or equal to a preset reference temperature and the second temperature is less than a first threshold or greater than a second threshold in a case where the compressor is in the running state.

What is claimed is: 
     
         1 . An air conditioner, comprising:
 an outdoor unit including a compressor;   an indoor unit connected to the outdoor unit to provide a refrigerant cycle;   a plurality of temperature sensors including a first temperature sensor, and the first temperature sensor being configured to detect an ambient temperature in a case where the compressor is in a standby state;   a temperature sensor to-be-detected being any one of the plurality of temperature sensors and configured to detect a first current temperature of a corresponding region in a case where the compressor is in a running state; wherein the temperature sensor to-be-detected has an allowable measurement interval, the allowable measurement interval includes a first threshold and a second threshold, and the first threshold is less than the second threshold; and   a controller coupled with the plurality of temperature sensors and the compressor, and the controller being configured to:   obtain a first temperature, the first temperature being obtained according to the ambient temperature;   obtain a second temperature, the second temperature being obtained according to the first current temperature;   in a case where the compressor is in the running state,   determine that the temperature sensor to-be-detected is out of order if the first temperature is greater than or equal to a preset reference temperature and the second temperature is less than the first threshold or greater than the second threshold; and   determine that the temperature sensor to-be-detected is normal if the first temperature is greater than or equal to the preset reference temperature and the second temperature is greater than or equal to the first threshold and less than or equal to the second threshold.   
     
     
         2 . The air conditioner according to  claim 1 , wherein the controller is further configured to:
 obtain an operating time of the compressor; wherein the operating time is a time of the compressor operating from an end moment of the standby state before the running state to a current moment of the running state; and   determine that the temperature sensor to-be-detected is out of order if the first temperature is less than the preset reference temperature, the operating time is greater than or equal to a preset time, and the second temperature is less than the first threshold or greater than the second threshold, in a case where the compressor is in the running state.   
     
     
         3 . The air conditioner according to  claim 2 , wherein the temperature sensor to-be-detected is further configured to detect a second current temperature of the corresponding region in a case where the compressor is in the standby state; the controller is further configured to:
 obtain a third temperature, the third temperature being obtained according to the second current temperature;   in a case where the compressor is in the standby state,   determine that the temperature sensor to-be-detected is out of order if the third temperature is less than the first threshold or greater than the second threshold; and   determine that the temperature sensor to-be-detected is normal if the third temperature is greater than or equal to the first threshold and less than or equal to the second threshold.   
     
     
         4 . The air conditioner according to  claim 3 , wherein the controller is further configured to:
 determine that the temperature sensor to-be-detected is out of order if the first temperature is greater than or equal to the preset reference temperature, and the third temperature is less than the first threshold or greater than the second threshold, in a case where the compressor is in the standby state.   
     
     
         5 . The air conditioner according to  claim 2 , wherein the controller is further configured to:
 determine that the temperature sensor to-be-detected is normal if the operating time of the compressor is less than the preset time.   
     
     
         6 . The air conditioner according to  claim 1 , wherein the temperature sensor to-be-detected is further configured to detect a second current temperature of the corresponding region in a case where the compressor is in the standby state; the controller is further configured to:
 obtain a third temperature, the third temperature being obtained according to the second current temperature;   in a case where the compressor is in the standby state,   determine that the temperature sensor to-be-detected is out of order if the third temperature is less than the first threshold or greater than the second threshold; and   determine that the temperature sensor to-be-detected is normal if the third temperature is greater than or equal to the first threshold and less than or equal to the second threshold.   
     
     
         7 . The air conditioner according to  claim 6 , wherein the controller is further configured to:
 determine that the temperature sensor to-be-detected is out of order if the first temperature is greater than or equal to the preset reference temperature and the third temperature is less than the first threshold or greater than the second threshold, in a case where the compressor is in the standby state.   
     
     
         8 . The air conditioner according to  claim 6 , wherein the controller is further configured to:
 obtain the first temperature by performing analog-to-digital conversion on the ambient temperature;   obtain the second temperature by performing analog-to-digital conversion on the first current temperature; and   obtain the third temperature by performing analog-to-digital conversion on the second current temperature.   
     
     
         9 . The air conditioner according to  claim 1 , wherein the first temperature sensor satisfies at least one of following:
 the first temperature sensor is configured to detect the ambient temperature in the standby state of the compressor before the running state in a case where the compressor is in the running state; or   the first temperature sensor is configured to detect the current ambient temperature in a case where the compressor is in the standby state.   
     
     
         10 . The air conditioner according to  claim 1 , wherein the indoor unit includes a first heat exchanger, and the outdoor unit further includes a second heat exchanger; the plurality of temperature sensors further include a second temperature sensor and a third temperature sensor, and the temperature sensor to-be-detected is any one of the first temperature sensor, the second temperature sensor, or the third temperature sensor;
 the first temperature sensor includes:
 a first temperature sub-sensor configured to detect a temperature of an indoor environment; and 
 a second temperature sub-sensor configured to detect a temperature of an outdoor environment; 
   the second temperature sensor includes:
 a third temperature sub-sensor configured to detect a temperature of a coil of the first heat exchanger; and 
 a fourth temperature sub-sensor configured to detect a temperature of a coil of the second heat exchanger; and 
   the third temperature sensor is configured to detect an exhaust temperature of the compressor.   
     
     
         11 . A control method of an air conditioner, the air conditioner including:
 an outdoor unit including a compressor;   an indoor unit connected to the outdoor unit to provide a refrigerant cycle;   a plurality of temperature sensors including a first temperature sensor, and the first temperature sensor being configured to detect an ambient temperature in a case where the compressor is in a standby state;   a temperature sensor to-be-detected being any one of the plurality of temperature sensors and configured to detect a first current temperature of a corresponding region in a case where the compressor is in a running state, wherein the temperature sensor to-be-detected has an allowable measurement interval, the allowable measurement interval includes a first threshold and a second threshold, and the first threshold is less than the second threshold; and   a controller coupled with the plurality of temperature sensors and the compressor;   wherein the method further comprises:   obtaining a first temperature, the first temperature being obtained according to the ambient temperature;   obtaining a second temperature, the second temperature being obtained according to the first current temperature;   in a case where the compressor is in the running state,   determining that the temperature sensor to-be-detected is out of order if the first temperature is greater than or equal to a preset reference temperature and the second temperature is less than the first threshold or greater than the second threshold; and   determining that the temperature sensor to-be-detected is normal if the first temperature is greater than or equal to the preset reference temperature and the second temperature is greater than or equal to the first threshold and less than or equal to the second threshold.   
     
     
         12 . The method according to  claim 11 , further comprising:
 obtaining an operating time of the compressor; wherein the operating time is a time of the compressor operating from an end moment of the standby state before the running state to a current moment of the running state; and   determining that the temperature sensor to-be-detected is out of order if the first temperature is less than the preset reference temperature, the operating time is greater than or equal to a preset time, and the second temperature is less than the first threshold or greater than the second threshold, in a case where the compressor is in the running state.   
     
     
         13 . The method according to  claim 12 , wherein the temperature sensor to-be-detected is further configured to detect a second current temperature of the corresponding region in a case where the compressor is in the standby state; the method further comprises:
 obtaining a third temperature, the third temperature being obtained according to the second current temperature;   in a case where the compressor is in the standby state,   determining that the temperature sensor to-be-detected is out of order if the third temperature is less than the first threshold or greater than the second threshold; and   determining that the temperature sensor to-be-detected is normal if the third temperature is greater than or equal to the first threshold and less than or equal to the second threshold.   
     
     
         14 . The method according to  claim 13 , further comprising:
 determining that the temperature sensor to-be-detected is out of order if the first temperature is greater than or equal to the preset reference temperature and the third temperature is less than the first threshold or greater than the second threshold, in a case where the compressor is in the standby state.   
     
     
         15 . The method according to  claim 12 , further comprising:
 determining that the temperature sensor to-be-detected is normal if the operating time of the compressor is less than the preset time.   
     
     
         16 . The method according to  claim 11 , wherein the temperature sensor to-be-detected is further configured to detect a second current temperature of the corresponding region in a case where the compressor is in the standby state; the method further comprises:
 obtaining a third temperature, the third temperature being obtained according to the second current temperature;   in a case where the compressor is in the standby state,   determining that the temperature sensor to-be-detected is out of order if the third temperature is less than the first threshold or greater than the second threshold; and   determining that the temperature sensor to-be-detected is normal if the third temperature is greater than or equal to the first threshold and less than or equal to the second threshold.   
     
     
         17 . The method according to  claim 16 , further comprising:
 determining that the temperature sensor to-be-detected is out of order if the first temperature is greater than or equal to the preset reference temperature and the third temperature is less than the first threshold or greater than the second threshold, in a case where the compressor is in the standby state.   
     
     
         18 . The method according to  claim 16 , further comprising:
 obtaining the first temperature by performing analog-to-digital conversion on the ambient temperature;   obtaining the second temperature by performing analog-to-digital conversion on the first current temperature; and   obtaining the third temperature by performing analog-to-digital conversion on the second current temperature.   
     
     
         19 . The method according to  claim 11 , wherein the first temperature sensor satisfies at least one of following:
 the first temperature sensor is configured to detect the ambient temperature in the standby state of the compressor before the running state in a case where the compressor is in the running state; or   the first temperature sensor is configured to detect the current ambient temperature in a case where the compressor is in the standby state.   
     
     
         20 . The method according to  claim 11 , wherein the indoor unit includes a first heat exchanger, and the outdoor unit further includes a second heat exchanger; the plurality of temperature sensors further includes a second temperature sensor and a third temperature sensor, the temperature sensor to-be-detected is any one of the first temperature sensor, the second temperature sensor, or the third temperature sensor;
 the first temperature sensor includes:
 a first temperature sub-sensor configured to detect a temperature of an indoor environment; and 
 a second temperature sub-sensor configured to detect a temperature of an outdoor environment; 
   the second temperature sensor includes:
 a third temperature sub-sensor configured to detect a temperature of a coil of the first heat exchanger; and 
 a fourth temperature sub-sensor configured to detect a temperature of a coil of the second heat exchanger; and 
   the third temperature sensor is configured to detect an exhaust temperature of the compressor.