Method for controlling window air conditioner

1. A method for controlling an air conditioner comprising:

after the air conditioner is turned on, controlling an indoor ambient temperature sensor to determine an indoor ambient temperature, controlling an indoor heat exchanger temperature sensor to determine an indoor heat exchanger temperature, controlling an outdoor heat exchanger temperature sensor to determine an outdoor heat exchanger temperature, controlling an outdoor ambient temperature sensor to determine an outdoor ambient temperature, and controlling an exhaust gas temperature sensor to determine an exhaust gas temperature;

determining a first compressor frequency based on the indoor ambient temperature, determining a second compressor frequency based on the indoor heat exchanger temperature, determining a third compressor frequency based on the outdoor heat exchanger temperature, determining a fourth compressor frequency based on the outdoor ambient temperature, and determining a fifth compressor frequency based on the exhaust gas temperature;

determining a minimum compressor frequency based on the first compressor frequency, the second compressor frequency, the third compressor frequency, the fourth compressor frequency, and the fifth compressor frequency; and

controlling a compressor of the air conditioner to operate at the minimum compressor frequency.

2. The method according to claim 1 , wherein:

controlling the indoor ambient temperature sensor to determine the indoor ambient temperature includes, in response to the indoor ambient temperature sensor being faulty, controlling the indoor ambient temperature sensor to determine the indoor ambient temperature according to a setting condition corresponding to the indoor ambient temperature sensor;

controlling the indoor heat exchanger temperature sensor to determine the indoor heat exchanger temperature includes, in response to the indoor heat exchanger temperature sensor being faulty, controlling the indoor heat exchanger temperature sensor to determine the indoor heat exchanger temperature according to a setting condition corresponding to the indoor heat exchanger temperature sensor;

controlling the outdoor heat exchanger temperature sensor to determine the outdoor heat exchanger temperature includes, in response to the outdoor heat exchanger temperature sensor being faulty, controlling the outdoor heat exchanger temperature sensor to determine the outdoor heat exchanger temperature according to a setting condition corresponding to the outdoor heat exchanger temperature sensor;

controlling the outdoor ambient temperature sensor to determine the outdoor ambient temperature includes, in response to the outdoor ambient temperature sensor being faulty, controlling the outdoor ambient temperature sensor to determine the outdoor ambient temperature according to a setting condition corresponding to the outdoor ambient temperature sensor; or

controlling the exhaust gas temperature sensor to determine the exhaust gas temperature includes, in response to the exhaust gas temperature sensor being faulty, controlling the exhaust gas temperature sensor to determine the exhaust gas temperature according to a setting condition corresponding to the exhaust gas temperature sensor.

3. The method according to claim 1 , further comprising:

controlling the air conditioner to stop operating in response to two or more of the indoor ambient temperature sensor, the indoor heat exchanger temperature sensor, the outdoor heat exchanger temperature sensor, the outdoor ambient temperature sensor, and the exhaust gas temperature sensor being faulty.

4. The method according to claim 1 , wherein controlling the indoor ambient temperature sensor to determine the indoor ambient temperature includes, in response to the indoor ambient temperature sensor being faulty, controlling the indoor ambient temperature sensor to determine the indoor ambient temperature to be 26° C.

5. The method according to claim 1 , wherein determining the second compressor frequency includes, in response to the indoor heat exchanger temperature sensor being faulty:

during refrigeration:

in response to the indoor ambient temperature being in a first temperature interval, determining the second compressor frequency to have a first set value; or

in response to the indoor ambient temperature being in a second temperature interval higher than the first temperature interval, determining the second compressor frequency to have a second set value; or

during heating:

in response to the indoor ambient temperature being in a third temperature interval, determining the second compressor frequency to have the second set value; or

in response to the indoor ambient temperature being in a fourth temperature interval higher than the third temperature interval, determining the second compressor frequency to have the first set value.

6. The method according to claim 1 , wherein determining the first compressor frequency includes determining the first compressor frequency based on a difference between the indoor ambient temperature and a set temperature.

7. The method according to claim 1 , further comprising:

in response to the indoor heat exchanger temperature being lower than a set temperature, reducing an operating frequency of the compressor at predetermined time intervals, until the indoor heat exchanger temperature falls in a predetermined temperature interval.

8. The method according to claim 1 , further comprising:

turning off the compressor in response to detecting that the indoor heat exchanger temperature equals to or is smaller than 0° C.

9. The method according to claim 1 , further comprising:

in response to detecting that the outdoor heat exchanger temperature is greater than a first preset temperature, controlling an outdoor fan of the air conditioner to turn on; or

in response to detecting that the outdoor heat exchanger temperature is lower than a second preset temperature lower than the first preset temperature, controlling the outdoor fan to turn off.

10. The method according to claim 1 , wherein a refrigerant used in the air conditioner is refrigerant R32.

11. The method according to claim 1 , further comprising:

determining a sixth compressor frequency according to a wind level of an indoor fan of the air conditioner; and

determining the minimum compressor frequency includes determining the minimum compressor frequency based on the first compressor frequency, the second compressor frequency, the third compressor frequency, the fourth compressor frequency, the fifth compressor frequency, and the sixth compressor frequency.

12. An air conditioner comprising:

a compressor;

an outdoor heat exchanger;

an indoor heat exchanger;

an indoor ambient temperature sensor configured to detect an indoor ambient temperature;

an indoor heat exchanger temperature sensor configured to detect an indoor heat exchanger temperature of the indoor heat exchanger;

an outdoor heat exchanger temperature sensor configured to detect an outdoor heat exchanger temperature of the outdoor heat exchanger;

an outdoor ambient temperature sensor configured to detect an outdoor ambient temperature;

an exhaust gas temperature sensor configured to detect an exhaust gas temperature; and

an electronic controller configured to:

control the air conditioner to turn on;

control the indoor ambient temperature sensor to determine the indoor ambient temperature, control the indoor heat exchanger temperature sensor to determine the indoor heat exchanger temperature, control the outdoor heat exchanger temperature sensor to determine the outdoor heat exchanger temperature, control the outdoor ambient temperature sensor to determine the outdoor ambient temperature, and control the exhaust gas temperature sensor to determine the exhaust gas temperature;

determine a first compressor frequency based on the indoor ambient temperature, determine a second compressor frequency based on the indoor heat exchanger temperature, determine a third compressor frequency based on the outdoor heat exchanger temperature, determine a fourth compressor frequency based on the outdoor ambient temperature, and determine a fifth compressor frequency based on the exhaust gas temperature;

determine a minimum compressor frequency based on the first compressor frequency, the second compressor frequency, the third compressor frequency, the fourth compressor frequency, and the fifth compressor frequency; and

control the compressor to operate at the minimum compressor frequency.

13. The air conditioner according to claim 12 , wherein the electronic controller is further configured to:

control the indoor ambient temperature sensor to determine the indoor ambient temperature by, in response to the indoor ambient temperature sensor being faulty, controlling the indoor ambient temperature sensor to determine the indoor ambient temperature according to a setting condition corresponding to the indoor ambient temperature sensor;

control the indoor heat exchanger temperature sensor to determine the indoor heat exchanger temperature by, in response to the indoor heat exchanger temperature sensor being faulty, controlling the indoor heat exchanger temperature sensor to determine the indoor heat exchanger temperature according to a setting condition corresponding to the indoor heat exchanger temperature sensor;

control the outdoor heat exchanger temperature sensor to determine the outdoor heat exchanger temperature by, in response to the outdoor heat exchanger temperature sensor being faulty, controlling the outdoor heat exchanger temperature sensor to determine the outdoor heat exchanger temperature according to a setting condition corresponding to the outdoor heat exchanger temperature sensor;

control the outdoor ambient temperature sensor to determine the outdoor ambient temperature by, in response to the outdoor ambient temperature sensor being faulty, controlling the outdoor ambient temperature sensor to determine the outdoor ambient temperature according to a setting condition corresponding to the outdoor ambient temperature sensor; or

control the exhaust gas temperature sensor to determine the exhaust gas temperature by, in response to the exhaust gas temperature sensor being faulty, controlling the exhaust gas temperature sensor to determine the exhaust gas temperature according to a setting condition corresponding to the exhaust gas temperature sensor.

14. The air conditioner according to claim 12 , wherein the electronic controller is further configured to:

control the air conditioner to stop operating in response to two or more of the indoor ambient temperature sensor, the indoor heat exchanger temperature sensor, the outdoor heat exchanger temperature sensor, the outdoor ambient temperature sensor, and the exhaust gas temperature sensor being faulty.

15. The air conditioner according to claim 12 , wherein the electronic controller is further configured to control the indoor ambient temperature sensor to determine the indoor ambient temperature by, in response to the indoor ambient temperature sensor being faulty, controlling the indoor ambient temperature sensor to determine the indoor ambient temperature to be 26° C.

16. The air conditioner according to claim 12 , wherein the electronic controller is further configured to determine the second compressor frequency by, in response to the indoor heat exchanger temperature sensor being faulty:

during refrigeration:

in response to the indoor ambient temperature being in a first temperature interval, determining the second compressor frequency to have a first set value; or

in response to the indoor ambient temperature being in a second temperature interval higher than the first temperature interval, determining the second compressor frequency to have a second set value; or

during heating:

in response to the indoor ambient temperature being in a third temperature interval, determining the second compressor frequency to have the second set value; or

in response to the indoor ambient temperature being in a fourth temperature interval higher than the third temperature interval, determining the second compressor frequency to have the first set value.

17. The air conditioner according to claim 12 , wherein the electronic controller is further configured to determine the first compressor frequency by determining the first compressor frequency based on a difference between the indoor ambient temperature and a set temperature.

18. The air conditioner according to claim 12 , wherein the electronic controller is further configured to:

in response to the indoor heat exchanger temperature being lower than a set temperature, reduce an operating frequency of the compressor at predetermined time intervals, until the indoor heat exchanger temperature falls in a predetermined temperature interval.

19. The air conditioner according to claim 12 , wherein the electronic controller is further configured to:

turn off the compressor in response to detecting that the indoor heat exchanger temperature equals to or is smaller than 0° C.

20. The air conditioner according to claim 12 , further comprising:

an outdoor fan;

wherein the electronic controller is further configured to

in response to detecting that the outdoor heat exchanger temperature is greater than a first preset temperature, control the outdoor fan to turn on; or

in response to detecting that the outdoor heat exchanger temperature is lower than a second preset temperature lower than the first preset temperature, control the outdoor fan to turn off.