CN104566863A - Method for detecting refrigerant leakage and air conditioner - Google Patents

Abstract

Embodiments of the present invention provide a method for detecting refrigerant leakage and an air conditioner, which are applied in the field of air conditioner control, and can detect refrigerant leakage without increasing the cost of the whole machine, which is beneficial to popularization and use of air conditioners. The method for detecting refrigerant leakage includes: when the continuous working time of the compressor of the air conditioner reaches a first preset time period, acquiring the indoor ambient temperature and the blowing temperature of the indoor air outlet of the air conditioner; Blow out the temperature to confirm whether there is leakage of the refrigerant of the air conditioner. The method for detecting refrigerant leakage provided by the embodiments of the present invention is used to detect whether there is leakage of air-conditioning refrigerant.

Description

Method for detecting refrigerant leakage and air conditioner

technical field

The invention relates to the field of air conditioner control, in particular to a method for detecting refrigerant leakage and an air conditioner.

Background technique

At present, commonly used household air conditioners include two parts: an indoor unit and an outdoor unit. The entire air conditioning system includes a compressor, an outdoor heat exchanger, a throttling device, and an indoor heat exchanger. There is also a refrigerant in the air conditioning system. The refrigerant is driven by the pressure generated by the compressor, circulates in the entire system, and exchanges heat with the indoor and outdoor environments to achieve the purpose of cooling or heating. Therefore, the amount of refrigerant directly affects the performance of the air conditioner. Cooling and heating effects. However, during the installation or use of the air conditioner, there may be long-term slow leakage of refrigerant caused by the high and low pressure connecting pipe nuts of the indoor and outdoor units not being tightly sealed, or the vibration and stress of the outdoor unit pipeline may cause cracking of the refrigerant pipeline and cause refrigerant leakage. Rapid leakage, which in turn affects the cooling and heating effects of the air conditioner.

In the prior art, it is usually necessary to install temperature sensors at the inlet and outlet of the air conditioner heat exchanger respectively to detect the temperature of the refrigerant at the inlet and outlet of the air conditioner heat exchanger respectively. When the difference in the temperature of the refrigerant is greater than or equal to a specific value, it indicates that the amount of refrigerant may be insufficient due to leakage of the refrigerant, and an alarm can be sent to the user, so that the user can check or repair in time. However, this method needs to set a special temperature sensor, which increases the cost of the whole machine and is not conducive to the popularization and use of air conditioners.

Contents of the invention

Embodiments of the present invention provide a method for detecting refrigerant leakage and an air conditioner, which can detect refrigerant leakage without increasing the cost of the whole machine, and are conducive to popularization and use of air conditioners.

In order to achieve the above object, embodiments of the present invention adopt the following technical solutions:

On the one hand, an embodiment of the present invention provides a method for detecting refrigerant leakage, which is used in an air conditioner, and the method includes:

When the continuous working time of the compressor of the air conditioner reaches the first preset time length, the indoor ambient temperature and the blowing temperature of the indoor air outlet of the air conditioner are acquired;

According to the ambient temperature and the blowing temperature, it is confirmed whether the refrigerant of the air conditioner leaks.

On the other hand, an embodiment of the present invention provides an air conditioner, and the air conditioner includes:

An acquisition unit, configured to acquire the indoor ambient temperature and the blowing temperature of the indoor air outlet of the air conditioner when the compressor of the air conditioner continues to work for a first preset duration;

The confirming unit is configured to confirm whether the refrigerant of the air conditioner leaks according to the ambient temperature and the blowing temperature.

In one aspect, an embodiment of the present invention provides an air conditioner, including an indoor unit and an outdoor unit, the indoor unit includes an indoor air outlet, the outdoor unit includes a compressor, and the air conditioner further includes:

a first temperature sensor, a second temperature sensor and a processor;

The first temperature sensor is used to detect the indoor ambient temperature;

The second temperature sensor is used to detect the blowing temperature;

The processor is configured to obtain the indoor ambient temperature and the blowing temperature of the indoor air outlet of the air conditioner when the continuous working time of the compressor of the air conditioner reaches a first preset duration, and obtain the temperature according to the ambient temperature and the blowing temperature , confirm whether the refrigerant of the air conditioner leaks.

Embodiments of the present invention provide a method for detecting refrigerant leakage and an air conditioner. The method for detecting refrigerant leakage includes: when the compressor of the air conditioner continues to work for a first preset duration, first obtain the indoor ambient temperature and The blowing temperature of the indoor air outlet of the air conditioner, and then confirm whether the refrigerant of the air conditioner leaks according to the ambient temperature and the blowing temperature. Compared with the prior art, the embodiment of the present invention utilizes the existing sensor of the air conditioner for obtaining the ambient temperature and the sensor for obtaining the blowing temperature to obtain the ambient temperature and the blowing temperature respectively. When the air-conditioning refrigerant is sufficient and the air conditioner is used for cooling, the air-conditioning temperature should be much lower than the ambient temperature, and when there is a large amount of leakage of the air-conditioning refrigerant, the heat exchange effect of the heat exchanger is poor. Whether heating or cooling is in progress, the ambient temperature is equivalent to the blowing temperature, so it can be determined that the air-conditioning refrigerant leaks according to the above-mentioned law of the ambient temperature and the blowing temperature. Since the embodiment of the present invention does not need to install temperature sensors at the inlet and outlet of the heat exchanger of the air conditioner, but uses the existing sensors of the air conditioner to confirm whether the refrigerant leaks, reduces the cost of the whole machine, and is conducive to the popularization and use of the air conditioner.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is a flowchart of a method for detecting refrigerant leakage provided by an embodiment of the present invention;

Fig. 2 is a flow chart of another method for detecting refrigerant leakage provided by an embodiment of the present invention;

Fig. 3 is a schematic structural diagram of an air conditioner provided by an embodiment of the present invention;

Fig. 4 is a schematic structural diagram of another air conditioner provided by an embodiment of the present invention;

Fig. 5 is a schematic structural diagram of another air conditioner provided by an embodiment of the present invention;

Fig. 6 is a schematic structural diagram of another air conditioner provided by an embodiment of the present invention;

Fig. 7 is a structural schematic diagram of yet another air conditioner provided by an embodiment of the present invention;

Fig. 8 is a schematic structural diagram of yet another air conditioner provided by an embodiment of the present invention;

Fig. 9 is a schematic structural diagram of yet another air conditioner provided by an embodiment of the present invention.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

An embodiment of the present invention provides a method for detecting refrigerant leakage, which is used in an air conditioner. As shown in FIG. 1 , the method includes:

Step 101 , when the continuous working time of the compressor of the air conditioner reaches a first preset time period, acquire the indoor ambient temperature and the blowing temperature of the indoor air outlet of the air conditioner.

In practical applications, a standard air conditioner needs to be equipped with two sensors. One sensor is used to obtain the ambient temperature so that the air conditioner can judge whether the ambient temperature is the same as the temperature set by the user. The other sensor is used to obtain the blown temperature of the indoor air outlet. It is used to monitor the temperature of the cold/hot air blown out by the air conditioner, so as to prevent the blown air from being too cold or overheating and affecting user comfort. For example, the existing air conditioner can test the indoor ambient temperature through the indoor return air sensor, and then the air conditioner can compare the measured ambient temperature with the temperature set by the user to determine whether the current ambient temperature reaches the user's set temperature. At the same time, the existing air conditioner can detect the blowing temperature through the blowing temperature sensor. For example, the existing air conditioner usually sets two preset temperature values, which are the corresponding first preset temperature value when the air conditioner is cooling and the corresponding first preset temperature value when the air conditioner is heating. The second preset value, when the air conditioner is cooling, the blowout temperature is tested by the blowout temperature sensor, the blowout temperature is the temperature at the air outlet of the air conditioner, and then the blowout temperature is compared with the first preset temperature value, when the blowout temperature is greater than or When it is equal to the first preset temperature value, the air conditioner is in normal use. When the blowing temperature is lower than the first preset temperature value, the compressor stops working, so as to prevent the blowing temperature from being too low and the user feels cold, and at the same time prevent the heat exchanger from cooling due to The temperature is too low to cause frosting; when the air conditioner is heating, the blowout temperature is tested by the blowout temperature sensor, and then the blowout temperature is compared with the second preset temperature value. When the blowout temperature is greater than or equal to the second preset temperature value, the compression The air conditioner stops working. When the blowing temperature is lower than the second preset temperature value, the air conditioner will be used normally to prevent the blowing temperature from being too high and the user to feel hot, and to prevent the compressor from working under too high a pressure.

As the air conditioner is turned on, the compressor starts to work. At this time, since the compressor may not be used for a long time, the effect of heating or cooling is not obvious at the beginning. At this time, the blowing temperature is equal to the ambient temperature. It is impossible to judge whether the refrigerant in the heat exchanger is sufficient due to the relationship with the ambient temperature. Therefore, it is necessary to judge the relationship between the blowing temperature and the ambient temperature after the compressor has been continuously working for the first preset time. The first preset duration is preset, and can be set according to specific situations in practical applications, which is not limited in this embodiment of the present invention.

Step 102, according to the ambient temperature and the blowing temperature, confirm whether there is leakage of the refrigerant of the air conditioner.

When the air conditioner refrigerant is sufficient and the air conditioner is used for heating, the blowing temperature should be much higher than the ambient temperature; when the air conditioner refrigerant is sufficient and the air conditioner is used for cooling, the blowing temperature should be much lower than the ambient temperature; The heat exchange effect of the heat exchanger is poor. Regardless of whether the air conditioner is heating or cooling, the ambient temperature is equivalent to the blowing temperature. Therefore, it can be determined whether the air conditioner refrigerant leaks according to the difference or ratio between the ambient temperature and the blowing temperature.

For example, when determining whether the air-conditioning refrigerant leaks according to the ratio of the ambient temperature to the blowing temperature, you can first set the first preset parameter corresponding to the air-conditioning heating and the second preset parameter corresponding to the air-conditioning cooling, and the air-conditioning heating When the ratio of the ambient temperature to the blowing temperature is greater than the first preset parameter, it is confirmed that the air conditioner refrigerant leaks; when the ratio of the ambient temperature to the blowing temperature is less than or equal to the first preset parameter, it means that the air conditioner has a good heating or cooling effect , there is no leakage of the refrigerant; when the air conditioner is cooling, when the ratio of the ambient temperature to the blowing temperature is less than or equal to the second preset parameter, it is confirmed that the air conditioner refrigerant leaks; when the ratio of the ambient temperature to the blowing temperature is greater than the second preset parameter, It means that the heating or cooling effect of the air conditioner is good, and there is no leakage of the refrigerant. Wherein, both the ambient temperature and the blowing temperature may be in K (Kelvin), which is a commonly used thermodynamic unit. In practical applications, °C (Celsius) may also be used as a unit, which is not limited in the embodiment of the present invention.

In this way, because the embodiment of the present invention does not need to install temperature sensors at the inlet and outlet of the air conditioner heat exchanger, but uses the existing sensors of the air conditioner to obtain the ambient temperature and the blowing temperature respectively, and then through the ambient temperature and the blowing temperature By contrast, it is confirmed whether the refrigerant leaks, which reduces the cost of the whole machine and is conducive to the popularization and use of air conditioners.

Optionally, when confirming whether the refrigerant of the air conditioner leaks according to the ambient temperature and the blowing temperature, it may first be determined whether the absolute value of the difference between the ambient temperature and the blowing temperature is less than or equal to a preset If the absolute value of the difference between the ambient temperature and the blowing temperature is less than or equal to a preset value, it is confirmed that the refrigerant of the air conditioner is leaking.

If the refrigerant is sufficient, the difference between the blown temperature and the ambient temperature is a negative number when the air conditioner is cooling, and the difference between the blown temperature and the ambient temperature is a positive number when the air conditioner is heating. Therefore, it is necessary to judge the absolute value of the difference between the blown temperature and the ambient temperature, and then pass the judgment result Check for refrigerant leaks. Wherein the preset value can be set according to the specific situation in the actual application, and the embodiment of the present invention does not limit this. For example, when the ambient temperature and the blowing temperature can both be in units of K, the preset value can be 3K or 2.5K.

For example, when the air-conditioning refrigerant is sufficient and the air-conditioning is used for heating, the blowing temperature should be much higher than the ambient temperature, so if the absolute value of the difference between the blowing temperature and the ambient temperature is less than a preset value, it can be determined that the air-conditioning refrigerant is leaking; When the air-conditioning refrigerant is sufficient and the air-conditioning is used for cooling, the blowing temperature should be much lower than the ambient temperature. Therefore, if the absolute value of the difference between the ambient temperature and the blowing temperature is less than the preset value, it can be determined that the air-conditioning refrigerant is leaking.

Optionally, a first cycle may be formed from acquiring the indoor ambient temperature and the blowing temperature of the indoor air outlet of the air conditioner to judging whether the absolute value of the difference between the ambient temperature and the blowing temperature is less than or equal to a preset value . In this way, when it is confirmed that the refrigerant of the air conditioner is leaking, first, when the absolute value of the difference between the ambient temperature and the blowing temperature is less than or equal to the preset value, the first cycle is repeated N times, if each The absolute value of the difference between the ambient temperature and the blowing temperature in the first cycle is less than or equal to the preset value, and it is confirmed that the refrigerant of the air conditioner leaks, wherein there may be a preset value between two adjacent first cycles. Time interval, the N is an integer greater than or equal to 1.

In practical applications, the temperature of the heat exchanger may be unstable after the air conditioner is turned on. Therefore, if you judge whether the refrigerant of the air conditioner is leaking based on the blown temperature obtained only once, there will be a misjudgment. Therefore, you can usually obtain indoor The ambient temperature and the blowing temperature of the indoor air outlet of the air conditioner to determine whether the absolute value of the difference between the ambient temperature and the blowing temperature is less than or equal to the preset value constitutes the first cycle, and the environment is acquired once in each first cycle. temperature and blowing temperature, the first cycle is executed continuously for N times, that is, the ambient temperature and the blowing temperature are continuously obtained for N times, and it is judged whether the absolute value of the difference between the ambient temperature and the blowing temperature obtained in each first cycle is less than or equal to the preset value, When the absolute value of the difference between the blowing temperature and the ambient temperature obtained in each first cycle is less than or equal to the preset value, it is confirmed that the refrigerant of the air conditioner is leaking, which can ensure the correctness of the confirmation result and reduce misjudgment. Among them, in order to further ensure that the blowing temperature is obtained when the compressor works stably, that is, the heat exchange efficiency of the heat exchanger is stable, the two adjacent first cycles can be executed continuously without intervals, and there can also be preset time intervals. The results between two adjacent first cycles do not affect each other, wherein the preset time interval is preset and is set according to specific situations in practical applications, which is not limited in the embodiment of the present invention. At the same time, if the operation of the compressor is relatively stable and the heat exchange efficiency of the heat exchanger is relatively uniform, there may not be a preset time interval between two adjacent first cycles.

For example, assuming that the first preset duration is 5 minutes, the preset time interval is 5 seconds, the preset value is 3, and N is 3, that is, the first cycle is repeatedly executed 3 times. When the compressor continues to work for more than 5 minutes, the ambient temperature detected by the indoor return air sensor and the blowing temperature detected by the blowing temperature sensor are used for the first time, and the absolute value of the difference between the ambient temperature and the blowing temperature is judged for the first time. It is equal to the preset value, and then 5 seconds later, the ambient temperature detected by the indoor return air sensor and the blowing temperature detected by the blowing temperature sensor are used for the second time, and the absolute value of the difference between the ambient temperature and the blowing temperature is judged for the second time. Set the value, pass the ambient temperature detected by the indoor return air sensor and the blowing temperature detected by the blowing temperature sensor for the third time after an interval of 5 seconds, and judge whether the absolute value of the difference between the ambient temperature and the blowing temperature is less than or equal to the preset value for the third time , that is, repeat the first cycle three times, and when the absolute value of the difference between the ambient temperature and the blowing temperature is less than or equal to the preset value three times, it can be confirmed that the refrigerant of the air conditioner is leaking.

Optionally, when the absolute value of the difference between the ambient temperature and the blowing temperature in each first cycle is less than or equal to a preset value, the compressor is turned off, and then after a second preset period of time, Restart the compressor; when the compressor continues to work for the first preset duration, repeat the first cycle Q times again, where Q is an integer greater than or equal to 1; wherein if each The absolute value of the difference between the ambient temperature and the blowing temperature in a first cycle is less than or equal to a preset value, and the compressor is turned off until the compressor continues to work for the first preset time. , repeating the first cycle Q times again is the second cycle; repeatedly executing the second cycle M times, and the M is an integer greater than or equal to 1; if in each first cycle of each second cycle , the absolute value of the difference between the ambient temperature and the blowing temperature is less than or equal to a preset value, and it is confirmed that the refrigerant of the air conditioner is leaking.

In practical applications, when the air conditioner is just started, or the compressor of the air conditioner is restarted after a long shutdown, even if the first cycle is repeated N times at this time, it is still possible that the compressor is not stable at the beginning of the test. The heat exchange efficiency of the heat exchanger is unstable, which makes the blowing temperature unstable, which in turn leads to misjudgment of the determination result. Therefore, the first cycle can be repeated N times, and the ambient temperature and the blowing temperature in each first cycle When the absolute value of the difference is less than or equal to the preset value, choose to temporarily turn off the compressor, and then restart the compressor after the second preset time, and repeat it again after the compressor continues to work for the first preset time Executing the first cycle N times, judging whether the absolute value of the difference between the ambient temperature and the blowing temperature in each first cycle is less than or equal to a preset value when it is executed again, and when executing it again in each first cycle If the absolute value of the difference between the ambient temperature and the blowing temperature is still less than or equal to the preset value, it means that the probability of the first misjudgment is very small. When both are unified, confirm that the air-conditioning refrigerant leaks to prevent misjudgment.

For example, if the absolute value of the difference between the ambient temperature and the blowing temperature in each first cycle is less than or equal to a preset value, the compressor is turned off until the compressor continues to work and reaches the specified value. When the first preset duration is mentioned, the first cycle is repeatedly executed Q times to form a second cycle; the second cycle is repeatedly executed M times, wherein M and Q are preset, and are performed according to specific conditions in actual applications. It is set, which is not limited in this embodiment of the present invention. After the first cycle is repeated N times for the first time, when the absolute value of the difference between the ambient temperature and the blowing temperature in each first cycle is less than or equal to a preset value, enter the first second cycle In this way, when the second cycle is executed twice, the first cycle is executed 3N times in total, making the probability of misjudgment very small and almost negligible.

Further, after confirming that the refrigerant of the air conditioner leaks, the air conditioner may also issue an alarm.

For example, when it is confirmed that the refrigerant of the air conditioner is leaking after continuous judgments, it means that the air conditioner is not working normally, so an alarm can be sent to the user, so that the user can repair and replenish the refrigerant in time. Among them, there are many ways to send out an alarm. An alarm light can be set on the air conditioner. When it is confirmed that the refrigerant has leaked, the alarm light can be lit to warn the user; or a buzzer can be installed on the air conditioner. When it is confirmed that the refrigerant has leaked , the knowledge buzzer beeps to warn the user. In practical applications, after confirming that the refrigerant of the air conditioner is leaking, the air conditioner may first shut down the compressor, so as to avoid irreversible damage to the compressor caused by continuous operation of the compressor when the refrigerant is insufficient.

The ambient temperature is detected by an indoor return air sensor of the air conditioner, and the blowing temperature is detected by a blowing temperature sensor of the air conditioner.

Further, after judging whether the absolute value of the difference between the ambient temperature and the blowing temperature is less than or equal to a preset value, the method further includes: when the absolute value of the difference between the ambient temperature and the blowing temperature is greater than When the preset value is reached, record the cumulative working time of the compressor; when the cumulative working time of the compressor reaches the third preset duration, judge whether the current continuous working duration of the compressor reaches the first preset duration. Set the duration; if the continuous working duration of the compressor of the air conditioner reaches the first preset duration, obtain the ambient temperature and the blowing temperature, and confirm the refrigerant of the air conditioner according to the ambient temperature and the blowing temperature Whether there is a leak.

In practical applications, during the working process of the compressor, the refrigerant pipeline may crack due to the vibration and stress of the outdoor unit pipeline, resulting in rapid leakage of the refrigerant. Therefore, when it is confirmed that there is no leakage of the refrigerant, the accumulated work of the compressor can be recorded. Time, when the accumulative working time of the compressor reaches the third preset time, it means that the compressor has been working for a long time, and it is very likely that the refrigerant pipeline will crack due to the vibration and stress of the outdoor unit pipeline, resulting in refrigerant leakage. Therefore, at this time, it is possible to detect whether there is leakage of the air-conditioning refrigerant. In order to ensure that the blowing temperature is obtained when the compressor works stably, it is also possible to first determine whether the current continuous working time of the compressor reaches the first preset time length. If the current continuous working time of the compressor of the air conditioner reaches the first The first cycle is executed for a preset period of time, that is, to detect whether there is leakage of the refrigerant.

Optionally, when it is determined that there is no leakage of the air-conditioning refrigerant, the cumulative working hours of the compressor can be cleared, and then continue to record the cumulative working hours of the compressor. When the cumulative working hours of the compressor reach the third preset time, it can be determined again Whether there is leakage of refrigerant, so that not only the refrigerant is detected when the air conditioner is just turned on, but also the refrigerant is detected in real time during the operation of the air conditioner to ensure that the user can be notified in time when the refrigerant leaks, so as to prevent the compressor from being in the refrigerant for a long time. Continuous operation with less refrigerant or lack of refrigerant will cause damage to the compressor.

An embodiment of the present invention provides a method for detecting refrigerant leakage. First, when the compressor of the air conditioner continues to work for a first preset period of time, the ambient temperature in the room and the blowing temperature of the indoor air outlet of the air conditioner are obtained. Then, according to the ambient temperature and the blowing temperature, it is confirmed that the refrigerant of the air conditioner leaks. Compared with the prior art, since the embodiment of the present invention does not need to install temperature sensors at the inlet and outlet of the heat exchanger of the air conditioner, but uses the existing sensors of the air conditioner to confirm whether the refrigerant leaks, reducing the cost of the whole machine, It is beneficial to the popularization and use of air conditioners.

The embodiment of the present invention provides a method for detecting refrigerant leakage. As shown in Figure 2, the embodiment of the present invention assumes that the first cycle is repeated three times, the second cycle is repeated three times, the first preset duration is 5 minutes, and two adjacent The preset time interval between the first cycle is 5 seconds, the second preset duration is 3 minutes, and the preset value is 2.5K (Kelvin). The value is limited. At the same time, the embodiment of the present invention obtains the ambient temperature through the indoor return air sensor, and obtains the blowing temperature through the blowing temperature sensor. In practical applications, the ambient temperature and the blowing temperature can be obtained respectively through other sensors installed in the air conditioner. limited. Specifically, the method for detecting refrigerant leakage includes:

Step 201, turn on the air conditioner, the compressor starts to work, record the continuous working time of the compressor, N is equal to 0, M is equal to 0, and step 202 is executed.

As the air conditioner is turned on, the compressor starts to work. At this time, since the compressor has not been used for a long time, when the cooling or heating is just started, the blowing temperature is equal to the ambient temperature. At this time, according to the relationship between the blowing temperature and the ambient temperature , it is impossible to judge whether the refrigerant in the compressor is sufficient, so it is necessary to record the continuous working time of the compressor. When the continuous working time of the compressor meets the preset conditions, it can be judged whether there is leakage of the refrigerant by obtaining the ambient temperature and the blowing temperature, which can improve the judgment result correct rate.

It should be noted that since the air conditioner will have heating or cooling, air supply and defrost modes during operation, when the air conditioner is in the air supply and defrost mode, the compressor does not work, so the blowing temperature is almost the same as the ambient temperature , at this time, it is impossible to judge whether the refrigerant leaks.

Step 202. When the continuous working time of the compressor reaches the first preset duration, obtain the ambient temperature detected by the indoor return air sensor of the air conditioner and the blowing temperature detected by the blowing temperature sensor of the air conditioner, and perform step 203.

In practical applications, it is necessary to judge the relationship between the blowing temperature and the ambient temperature after the compressor continues to work for the first preset time. The first preset duration is preset, and can be set according to specific situations in practical applications, which is not limited in this embodiment of the present invention.

In practical applications, existing air conditioners need to detect the indoor ambient temperature, and then compare the measured ambient temperature with the temperature set by the user to determine whether the current ambient temperature reaches the user's set temperature. At the same time, the existing air conditioner needs to detect the blowing temperature to prevent the temperature of the air outlet from being too low or too high, which will affect the comfort of the user, and at the same time avoid frosting of the heat exchanger due to too low temperature or too high working pressure of the compressor. Therefore, it is used for The sensor for detecting the ambient temperature and the sensor for detecting the blowing temperature are the standard configurations of the existing air conditioners. The embodiment of the present invention is described by taking the indoor return air sensor and the blowing temperature sensor to obtain the ambient temperature and the blowing temperature as an example. In the examples of the present invention, both the ambient temperature and the blowing temperature are in K.

Step 203, judging whether the absolute value of the difference between the ambient temperature and the blowing temperature is less than or equal to 2.5K, and when the absolute value of the difference between the ambient temperature and the blowing temperature is less than or equal to 2.5K, perform step 204 ; When the absolute value of the difference between the ambient temperature and the blowing temperature is greater than 2.5K, execute step 209.

If the refrigerant is sufficient, the difference between the blown temperature and the ambient temperature is a negative number when the air conditioner is cooling, and the difference between the blown temperature and the ambient temperature is a positive number when the air conditioner is heating. Therefore, it is necessary to determine the absolute value of the difference between the blown temperature and the ambient temperature. When the absolute value of the difference in ambient temperature is less than 2.5K, it means that the difference between the blowing temperature and the ambient temperature is not large. But in the case of sufficient refrigerant, the blowing temperature of the air conditioner should be much lower than the ambient temperature when cooling, and the blowing temperature should be much higher than the ambient temperature when the air conditioner is heating. When working, the absolute value of the difference between the blown out temperature and the ambient temperature should be relatively large. If the absolute value of the difference between the blown out temperature and the ambient temperature is less than 2.5K, it means that the blown out temperature is close to the ambient temperature. This is due to a large amount of leakage of the air conditioner refrigerant , the compressor cannot perform normal cooling or heating. The 2.5K is set according to specific conditions, which is not limited in this embodiment of the present invention.

In step 204, N is increased by 1, and step 205 is executed.

Step 205, judge whether N is equal to 3, when N is equal to 3, execute step 206; when N is not equal to 3, execute step 202 after 5 seconds.

In practical applications, the compressor may not work stably after the air conditioner is turned on. Therefore, if you only judge whether the refrigerant of the air conditioner is leaking based on the blown temperature obtained once, there will be a misjudgment. Therefore, the above steps can usually be repeated. 3 times. For example, the first cycle may be composed of obtaining the indoor ambient temperature and the blowing temperature of the indoor air outlet of the air conditioner and judging whether the absolute value of the difference between the ambient temperature and the blowing temperature is less than or equal to a preset value, and setting Parameter N, every time the first cycle is executed, execute N plus 1. When N is equal to 3, it means that the first cycle has been completed three times, and the absolute difference between the ambient temperature and the blowing temperature in each first cycle The values are all less than or equal to 2.5K, so it can be preliminarily determined that the refrigerant may have leaked.

However, when the first cycle is repeated three times, the compressor may not work stably, or the compressor may not be fully heating or cooling, and the blowing temperature may not be very high or very low. The absolute value of the difference between the ambient temperature and the blowing temperature in one cycle is less than or equal to 2.5K, and it may not be caused by refrigerant leakage. Therefore, in practical applications, the above steps can be repeated three times to reduce the misjudgment rate.

Step 206, judging whether M is equal to 3, when M is not equal to 3, execute step 207; when M is equal to 3, execute step 211.

In practical applications, the first cycle can be executed multiple times within a reasonable range. For example, the first cycle can be executed 3 times each time, M times in a row. When M is equal to 3, it means that the first cycle has been executed 9 times , the probability of misjudgment is very small at this time. Therefore, after executing the first cycle three times each time, in order to ensure the number of executions of the first cycle, it is necessary to determine whether M is equal to a preset threshold, which is 3 in the embodiment of the present invention.

In step 207, M is increased by 1, and step 208 is executed.

Step 208: Turn off the compressor for three minutes and then restart the compressor, and execute step 202.

After repeating the first cycle N times, N in the embodiment of the present invention is 3, if the absolute value of the difference between the ambient temperature and the blowing temperature in each first cycle is less than or equal to 2.5K, it means that the refrigerant may appear Leakage, but this result may also be caused by the unstable operation of the compressor. It cannot be completely confirmed that the refrigerant is leaking. Therefore, the absolute value of the difference between the ambient temperature and the blowing temperature in each first cycle is less than or When it is equal to 2.5K, you can turn off the compressor for 3 minutes, then turn on the compressor again, and then re-obtain the ambient temperature and blowing temperature for judgment.

Step 209 , the compressor works normally, record the accumulative working time of the compressor, and execute step 210 .

When the absolute value of the difference between the ambient temperature and the blowing temperature is greater than 2.5K, it means that the difference between the blowing temperature and the ambient temperature is large, which further shows that the compressor can perform normal heating or cooling work, that is, the refrigerant is sufficient, so the compressor can Continue with normal work.

Step 210, when the accumulative working time of the compressor reaches the third preset time length, judge whether the current continuous working time of the compressor reaches the first preset time length, if the current continuous working time of the compressor of the air conditioner is When the first preset duration is reached, step 202 is executed; if the current continuous working duration of the compressor of the air conditioner is less than the first preset duration, step 209 is executed.

In practical applications, during the working process of the compressor, the refrigerant pipeline may crack due to the vibration and stress of the outdoor unit pipeline, resulting in rapid leakage of the refrigerant. Therefore, when it is confirmed that there is no leakage of the refrigerant, the accumulated work of the compressor can be recorded. Time, when the accumulative working time of the compressor reaches the third preset time, it means that the compressor has been working for a long time, and it is very likely that the refrigerant pipeline will crack due to the vibration and stress of the outdoor unit pipeline, resulting in refrigerant leakage. Therefore, at this time, it is possible to detect whether the air-conditioning refrigerant leaks again. In order to ensure that the blowing temperature is obtained when the compressor works stably, it is also possible to first determine whether the continuous working time of the compressor has reached the first preset time. If the time is set to be long, step 202 is executed, that is, to detect whether the refrigerant leaks.

Step 211, turn on the alarm light.

If the absolute value of the difference between the ambient temperature and the blowing temperature in each first cycle is less than or equal to a preset value, turn off the compressor until the second time and repeat the first cycle N times as A second cycle, when the second cycle is repeated M times in a row, if in each first cycle of each second cycle, the absolute value of the difference between the ambient temperature and the blowing temperature is less than or equal to the preset At this time, the misjudgment rate is low, and it can be completely confirmed that the refrigerant of the air conditioner is leaking, so the alarm light can be turned on to warn the user of the refrigerant leakage, so that the user can repair the air conditioner in time and replenish the refrigerant. In practical applications, the compressor may also be turned off first, so as to avoid damage to the compressor caused by continuous operation of the compressor when the refrigerant is insufficient.

Compared with the prior art, the embodiment of the present invention uses the existing sensors of the air conditioner to obtain the ambient temperature and the blowing temperature respectively. When the air conditioner has sufficient refrigerant and the air conditioner is used for heating, the blowing temperature should be much higher than the ambient temperature. Therefore, according to the above According to the regularity, it can be determined that the air-conditioning refrigerant is leaking. Since the embodiment of the present invention does not need to install temperature sensors at the inlet and outlet of the heat exchanger of the air conditioner, but uses the existing sensors of the air conditioner to confirm whether the refrigerant leaks, reduces the cost of the whole machine, and is conducive to the popularization and use of the air conditioner.

An embodiment of the present invention provides an air conditioner 30. As shown in FIG. 3, the air conditioner includes:

The acquiring unit 301 is configured to acquire the indoor ambient temperature and the blowing temperature of the indoor air outlet of the air conditioner 30 when the compressor of the air conditioner 30 continues to work for a first preset duration.

It should be noted that both the sensor for obtaining the ambient temperature and the sensor for obtaining the blowing temperature are standard configurations of the existing air conditioner 30 .

As the air conditioner 30 is turned on, the compressor has just started to work. At this time, since the compressor has not been used for a long time, the blowing temperature is equal to the ambient temperature. At this time, it is impossible to judge whether the refrigerant is sufficient according to the relationship between the blowing temperature and the ambient temperature. Therefore, it is necessary to judge the relationship between the blowing temperature and the ambient temperature after the compressor has been continuously working for the first preset time. The first preset duration is preset, and can be set according to specific situations in practical applications, which is not limited in this embodiment of the present invention.

The confirmation unit 302 is configured to confirm whether the refrigerant of the air conditioner leaks according to the ambient temperature and the blowing temperature.

When the air conditioner refrigerant is sufficient and the air conditioner is used for heating, the blowing temperature should be much higher than the ambient temperature; when the air conditioner refrigerant is sufficient and the air conditioner is used for cooling, the blowing temperature should be much lower than the ambient temperature; The compressor cannot work effectively. Whether the air conditioner is heating or cooling, the ambient temperature is equivalent to the blowing temperature. Therefore, it can be determined whether there is leakage of the air-conditioning refrigerant according to the difference or ratio between the ambient temperature and the blowing temperature.

In this way, because the embodiment of the present invention does not need to install temperature sensors at the inlet and outlet of the air conditioner heat exchanger, but uses the existing sensors of the air conditioner to obtain the ambient temperature and the blowing temperature respectively, and then through the ambient temperature and the blowing temperature By contrast, it is confirmed whether the refrigerant leaks, which reduces the cost of the whole machine and is conducive to the popularization and use of air conditioners.

Optionally, the confirmation unit 302 is specifically configured to determine whether the absolute value of the difference between the ambient temperature and the blowing temperature is less than or equal to a preset value, if the absolute value of the difference between the ambient temperature and the blowing temperature is If they are all less than or equal to the preset value, it is confirmed that the refrigerant of the air conditioner 30 leaks.

Optionally, it is a first cycle from acquiring the indoor ambient temperature and the blowing temperature of the indoor air outlet of the air conditioner 30 to judging whether the absolute value of the difference between the ambient temperature and the blowing temperature is less than or equal to a preset value .

As shown in FIG. 4 , the air conditioner 30 further includes a first execution unit 303, configured to repeatedly execute the first cycle N times, where N is an integer greater than or equal to 1; the confirmation unit 302 is specifically used for: If the absolute value of the difference between the ambient temperature and the blowing temperature in each first cycle is less than or equal to a preset value, it is confirmed that the refrigerant of the air conditioner 30 is leaking.

Optionally, the first period is from acquiring the indoor ambient temperature and the blowing temperature of the indoor air outlet of the air conditioner to judging whether the absolute value of the difference between the ambient temperature and the blowing temperature is less than or equal to a preset value.

As shown in FIG. 5 , the air conditioner 30 also includes a second execution unit 304, configured to repeatedly execute the first cycle N times, where N is an integer greater than or equal to 1; if each first cycle The absolute value of the difference between the ambient temperature and the blowing temperature is less than or equal to a preset value, and the compressor is turned off; after a second preset duration, the compressor is restarted; when the compressor continues to work for the specified For the first preset duration, repeat the first cycle Q times again, where Q is an integer greater than or equal to 1; wherein if the difference between the ambient temperature and the blowing temperature in each first cycle is The absolute values are all less than or equal to the preset value, and the compressor is turned off until the continuous working time of the compressor reaches the first preset duration, and the first cycle is repeated Q times again, which is the second cycle; repeat executing the second cycle M times, where M is an integer greater than or equal to 1;

The confirming unit 302 is specifically configured to confirm that the refrigerant of the air conditioner is used if the absolute value of the difference between the ambient temperature and the blowing temperature is less than or equal to a preset value in each first cycle of each second cycle. There is a leak.

Further, as shown in Figure 6, the air conditioner 30 also includes:

The control unit 305 is configured to issue an alarm after confirming that the refrigerant of the air conditioner 30 leaks.

Optionally, the air conditioner 30 may detect the ambient temperature through an indoor return air sensor of the air conditioner, and detect the blowout temperature through a blowout temperature sensor of the air conditioner.

Further, as shown in Figure 7, the air conditioner 30 also includes:

The recording unit 306 is configured to record the accumulative working time of the compressor when the absolute value of the difference between the ambient temperature and the blowing temperature is greater than the preset value.

The judging unit 307 is configured to judge whether the current continuous working time of the compressor reaches the first preset time when the accumulative working time of the compressor reaches a third preset time.

The acquiring unit 301 is further configured to acquire the ambient temperature and the blowing temperature if the continuous working time of the compressor of the air conditioner reaches a first preset time;

The confirmation unit 302 is further configured to confirm whether the refrigerant of the air conditioner leaks according to the ambient temperature and the blowing temperature.

An embodiment of the present invention provides an air conditioner. First, when the compressor of the air conditioner continues to work for a first preset duration, the acquisition unit acquires the ambient temperature in the room and the blowing temperature of the indoor air outlet of the air conditioner, and then Leakage of the refrigerant of the air conditioner is confirmed by the confirming unit. Compared with the prior art, since the embodiment of the present invention does not need to install temperature sensors at the inlet and outlet of the heat exchanger of the air conditioner, but uses the existing sensors of the air conditioner to confirm whether the refrigerant leaks, reducing the cost of the whole machine, It is beneficial to the popularization and use of air conditioners.

An embodiment of the present invention provides an air conditioner 80, including an indoor unit and an outdoor unit, the indoor unit includes an indoor air outlet, and the outdoor unit includes a compressor. As shown in FIG. 8, the air conditioner 80 further includes:

A first temperature sensor 801, a second temperature sensor 802 and a processor 803;

The first temperature sensor 801 is used to detect the indoor environment temperature;

The second temperature sensor 802 is used to detect the blowing temperature;

The processor 803 is configured to obtain the indoor ambient temperature and the blowing temperature of the indoor air outlet of the air conditioner 80 when the continuous working time of the compressor of the air conditioner 80 reaches a first preset duration, and according to the ambient temperature and The blowing temperature is to confirm whether there is leakage of the refrigerant of the air conditioner 80 .

In this way, the air conditioner described in the embodiment of the present invention does not need to install temperature sensors at the inlet and outlet of the air conditioner heat exchanger, but can confirm the refrigerant temperature by using the existing sensor of the air conditioner to detect the ambient temperature and the sensor to detect the blown temperature. Whether it leaks, reduces the cost of the whole machine, and is conducive to the popularization and use of air conditioners.

Further, the processor 803 is specifically configured to:

judging whether the absolute value of the difference between the ambient temperature and the blowing temperature is less than or equal to a preset value;

If the absolute value of the difference between the ambient temperature and the blowing temperature is less than or equal to a preset value, it is confirmed that the refrigerant of the air conditioner 80 is leaking.

Further, the first period is from acquiring the indoor ambient temperature and the blowing temperature of the indoor air outlet of the air conditioner 80 to judging whether the absolute value of the difference between the ambient temperature and the blowing temperature is less than or equal to a preset value;

The processor 803 is specifically configured to repeatedly execute the first cycle N times, where N is an integer greater than or equal to 1;

If the absolute value of the difference between the ambient temperature and the blowing temperature in each first cycle is less than or equal to a preset value, it is confirmed that the refrigerant of the air conditioner 80 is leaking.

Preferably, the first period is from obtaining the indoor ambient temperature and the blowing temperature of the indoor air outlet of the air conditioner 80 to judging whether the absolute value of the difference between the ambient temperature and the blowing temperature is less than or equal to a preset value;

The processor 803 is specifically configured to repeatedly execute the first cycle N times, where N is an integer greater than or equal to 1;

If the absolute value of the difference between the ambient temperature and the blowing temperature in each first cycle is less than or equal to a preset value, turn off the compressor;

After a second preset duration, restarting the compressor;

When the continuous working time of the compressor reaches the first preset time length, the first cycle is repeatedly executed Q times, and the Q is an integer greater than or equal to 1;

Wherein, if the absolute value of the difference between the ambient temperature and the blowing temperature in each first cycle is less than or equal to a preset value, the compressor is turned off until the first cycle is reached when the compressor continues to work. When the duration is preset, repeating the first cycle Q times again is the second cycle;

repeatedly executing the second cycle M times, where M is an integer greater than or equal to 1;

If in each first cycle of each second cycle, the absolute value of the difference between the ambient temperature and the blowing temperature is less than or equal to a preset value, it is confirmed that the refrigerant of the air conditioner 80 is leaking.

Optionally, the processor 803 is further configured to shut down the compressor after it is confirmed that the refrigerant of the air conditioner 80 leaks.

Optionally, as shown in FIG. 9 , the air conditioner 80 further includes an alarm 804;

The processor 803 is further configured to control the alarm 804 to issue an alarm after confirming that the refrigerant of the air conditioner 80 leaks.

As shown in FIG. 9, the first temperature sensor 801 is an indoor return air sensor arranged at the air return port of the air conditioner 80;

The second temperature sensor 802 is a blowout temperature sensor arranged at the air outlet of the air conditioner 80 .

Further, the processor 803 is also configured to record the cumulative working time of the compressor when the absolute value of the difference between the ambient temperature and the blowing temperature is greater than the preset value;

When the accumulative working time of the compressor reaches a third preset duration, it is judged whether the current continuous working duration of the compressor reaches the first preset duration;

If the continuous working time of the compressor of the air conditioner 80 reaches the first preset time, obtain the ambient temperature and the blowing temperature, and confirm whether the refrigerant of the air conditioner 80 is There is a leak.

An embodiment of the present invention provides an air conditioner. First, when the continuous working time of the compressor of the air conditioner reaches a first preset duration, the ambient temperature and the blowing temperature of the air conditioner are obtained, and then the air conditioner is confirmed according to the ambient temperature and the blowing temperature. Air conditioner refrigerant leaks. Compared with the prior art, since the air conditioner described in the embodiment of the present invention does not need to install temperature sensors at the inlet and outlet of the heat exchanger of the air conditioner, but uses the existing sensor of the air conditioner to confirm whether the refrigerant leaks, reducing the The cost of the whole machine is conducive to the popularization and use of air conditioners.

Those skilled in the art can clearly understand that for the convenience and brevity of description, the specific working process of the above-described devices and units can refer to the corresponding process in the foregoing method embodiments, and details are not repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed devices and methods may be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or May be integrated into another system, or some features may be ignored, or not implemented.

The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may be physically included separately, or two or more units may be integrated into one unit. The above-mentioned integrated units can be implemented in the form of hardware, or in the form of hardware plus software functional units.

The above is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Anyone skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present invention. Should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the protection scope of the claims.

Claims (21)

1. A method for detecting refrigerant leakage, for air conditioning, characterized in that the method comprises: When the continuous working time of the compressor of the air conditioner reaches the first preset time length, the indoor ambient temperature and the blowing temperature of the indoor air outlet of the air conditioner are obtained; According to the ambient temperature and the blowing temperature, it is confirmed whether the refrigerant of the air conditioner leaks. 2. The method according to claim 1, wherein, according to the ambient temperature and the blowing temperature, confirming whether there is leakage of the refrigerant of the air conditioner comprises: judging whether the absolute value of the difference between the ambient temperature and the blowing temperature is less than or equal to a preset value; If the absolute value of the difference between the ambient temperature and the blowing temperature is less than or equal to a preset value, it is confirmed that the refrigerant of the air conditioner is leaking. 3. The method of claim 2, wherein, The first period is from acquiring the indoor ambient temperature and the blowing temperature of the indoor air outlet of the air conditioner to judging whether the absolute value of the difference between the ambient temperature and the blowing temperature is less than or equal to a preset value; If the absolute value of the difference between the ambient temperature and the blowing temperature is less than or equal to a preset value, before confirming that the refrigerant of the air conditioner leaks, the method further includes: repeatedly executing the first cycle N times, where N is an integer greater than or equal to 1; If the absolute value of the difference between the ambient temperature and the blowing temperature is less than or equal to a preset value, confirming that the refrigerant of the air conditioner is leaking is as follows: If the absolute value of the difference between the ambient temperature and the blowing temperature in each first cycle is less than or equal to a preset value, it is confirmed that the refrigerant of the air conditioner is leaking. 4. The method of claim 2, wherein, The first period is from acquiring the indoor ambient temperature and the blowing temperature of the indoor air outlet of the air conditioner to judging whether the absolute value of the difference between the ambient temperature and the blowing temperature is less than or equal to a preset value; repeatedly executing the first cycle N times, where N is an integer greater than or equal to 1; If the absolute value of the difference between the ambient temperature and the blowing temperature in each first cycle is less than or equal to a preset value, turn off the compressor; After a second preset duration, restarting the compressor; When the continuous working time of the compressor reaches the first preset time length, the first cycle is repeatedly executed Q times, and the Q is an integer greater than or equal to 1; Wherein, if the absolute value of the difference between the ambient temperature and the blowing temperature in each first cycle is less than or equal to a preset value, the compressor is turned off until the first cycle is reached when the compressor continues to work. When the duration is preset, repeating the first cycle Q times again is the second cycle; repeatedly executing the second cycle M times, where M is an integer greater than or equal to 1; If the absolute value of the difference between the ambient temperature and the blowing temperature is less than or equal to a preset value, confirming that the refrigerant of the air conditioner is leaking is as follows: If in each first cycle of each second cycle, the absolute value of the difference between the ambient temperature and the blowing temperature is less than or equal to a preset value, it is confirmed that the refrigerant of the air conditioner is leaking. 5. The method according to any one of claims 2 to 4, characterized in that, after confirming that the refrigerant of the air conditioner leaks, the method further comprises: The air conditioner sounds an alarm. 6. The method according to any one of claims 1 to 4, characterized in that, The ambient temperature is detected by an indoor return air sensor of the air conditioner, and the blowing temperature is detected by a blowing temperature sensor of the air conditioner. 7. The method according to claim 2, wherein after judging whether the absolute value of the difference between the ambient temperature and the blowing temperature is less than or equal to a preset value, the method further comprises: When the absolute value of the difference between the ambient temperature and the blowing temperature is greater than the preset value, record the cumulative working time of the compressor; When the accumulative working time of the compressor reaches a third preset duration, it is judged whether the current continuous working duration of the compressor reaches the first preset duration; If the continuous working time of the compressor of the air conditioner reaches the first preset duration, obtain the ambient temperature and the blowing temperature, and confirm whether the refrigerant of the air conditioner leaks according to the ambient temperature and the blowing temperature . 8. An air conditioner, characterized in that the air conditioner comprises: An acquisition unit, configured to acquire the indoor ambient temperature and the blowing temperature of the indoor air outlet of the air conditioner when the compressor of the air conditioner continues to work for a first preset duration; The confirming unit is configured to confirm whether the refrigerant of the air conditioner leaks according to the ambient temperature and the blowing temperature. 9. The air conditioner according to claim 8, wherein the confirmation unit is specifically used for: judging whether the absolute value of the difference between the ambient temperature and the blowing temperature is less than or equal to a preset value; If the absolute value of the difference between the ambient temperature and the blowing temperature is less than or equal to a preset value, it is confirmed that the refrigerant of the air conditioner is leaking. 10. The air conditioner according to claim 9, characterized in that, From acquiring the indoor ambient temperature and the blowing temperature of the indoor air outlet of the air conditioner to judging whether the absolute value of the difference between the ambient temperature and the blowing temperature is less than or equal to a preset value is a first cycle; The air conditioner also includes a first execution unit, configured to repeatedly execute the first cycle N times, where N is an integer greater than or equal to 1; The confirmation unit is specifically used for: If the absolute value of the difference between the ambient temperature and the blowing temperature in each first cycle is less than or equal to a preset value, it is confirmed that the refrigerant of the air conditioner is leaking. 11. The air conditioner according to claim 9, characterized in that, The first period is from acquiring the indoor ambient temperature and the blowing temperature of the indoor air outlet of the air conditioner to judging whether the absolute value of the difference between the ambient temperature and the blowing temperature is less than or equal to a preset value; The air conditioner also includes a second execution unit, configured to repeatedly execute the first cycle N times, where N is an integer greater than or equal to 1; If the absolute value of the difference between the ambient temperature and the blowing temperature in each first cycle is less than or equal to a preset value, turn off the compressor; After a second preset duration, restarting the compressor; When the continuous working time of the compressor reaches the first preset time length, the first cycle is repeatedly executed Q times, and the Q is an integer greater than or equal to 1; Wherein, if the absolute value of the difference between the ambient temperature and the blowing temperature in each first cycle is less than or equal to a preset value, the compressor is turned off until the first cycle is reached when the compressor continues to work. When the duration is preset, repeating the first cycle Q times again is the second cycle; repeatedly executing the second cycle M times, where M is an integer greater than or equal to 1; The confirmation unit is specifically used for: If in each first cycle of each second cycle, the absolute value of the difference between the ambient temperature and the blowing temperature is less than or equal to a preset value, it is confirmed that the refrigerant of the air conditioner is leaking. 12. The air conditioner according to any one of claims 9 to 11, wherein the air conditioner further comprises: The control unit is configured to issue an alarm after confirming that the refrigerant of the air conditioner is leaking. 13. The air conditioner according to any one of claims 8 to 11, characterized in that, The ambient temperature is detected by an indoor return air sensor of the air conditioner, and the blowing temperature is detected by a blowing temperature sensor of the air conditioner. 14. The air conditioner according to claim 9, further comprising: A recording unit, configured to record the cumulative working time of the compressor when the absolute value of the difference between the ambient temperature and the blowing temperature is greater than the preset value; A judging unit, configured to judge whether the current continuous working time of the compressor reaches the first preset time when the cumulative working time of the compressor reaches a third preset time; The acquiring unit is further configured to acquire the ambient temperature and the blowing temperature if the continuous working time of the compressor of the air conditioner reaches a first preset time; The confirming unit is further configured to confirm whether the refrigerant of the air conditioner leaks according to the ambient temperature and the blowing temperature. 15. An air conditioner, including an indoor unit and an outdoor unit, the indoor unit includes an indoor air outlet, and the outdoor unit includes a compressor, wherein the air conditioner also includes: a first temperature sensor, a second temperature sensor and a processor; The first temperature sensor is used to detect the indoor ambient temperature; The second temperature sensor is used to detect the blowing temperature; The processor is configured to obtain the indoor ambient temperature and the blowing temperature of the indoor air outlet of the air conditioner when the continuous working time of the compressor of the air conditioner reaches a first preset duration, and obtain the temperature according to the ambient temperature and the blowing temperature , confirm whether the refrigerant of the air conditioner leaks. 16. The air conditioner according to claim 15, wherein the processor is specifically used for: judging whether the absolute value of the difference between the ambient temperature and the blowing temperature is less than or equal to a preset value; If the absolute value of the difference between the ambient temperature and the blowing temperature is less than or equal to a preset value, it is confirmed that the refrigerant of the air conditioner is leaking. 17. The air conditioner according to claim 16, characterized in that, The first period is from acquiring the indoor ambient temperature and the blowing temperature of the indoor air outlet of the air conditioner to judging whether the absolute value of the difference between the ambient temperature and the blowing temperature is less than or equal to a preset value; The processor is specifically configured to repeatedly execute the first cycle N times, where N is an integer greater than or equal to 1; If the absolute value of the difference between the ambient temperature and the blowing temperature in each first cycle is less than or equal to a preset value, it is confirmed that the refrigerant of the air conditioner is leaking. 18. The air conditioner according to claim 16, wherein: The first period is from acquiring the indoor ambient temperature and the blowing temperature of the indoor air outlet of the air conditioner to judging whether the absolute value of the difference between the ambient temperature and the blowing temperature is less than or equal to a preset value; The processor is specifically configured to repeatedly execute the first cycle N times, where N is an integer greater than or equal to 1; If the absolute value of the difference between the ambient temperature and the blowing temperature in each first cycle is less than or equal to a preset value, turn off the compressor; After a second preset duration, restarting the compressor; When the continuous working time of the compressor reaches the first preset time length, the first cycle is repeatedly executed Q times, and the Q is an integer greater than or equal to 1; Wherein, if the absolute value of the difference between the ambient temperature and the blowing temperature in each first cycle is less than or equal to a preset value, the compressor is turned off until the first cycle is reached when the compressor continues to work. When the duration is preset, repeating the first cycle Q times again is the second cycle; repeatedly executing the second cycle M times, where M is an integer greater than or equal to 1; If in each first cycle of each second cycle, the absolute value of the difference between the ambient temperature and the blowing temperature is less than or equal to a preset value, it is confirmed that the refrigerant of the air conditioner is leaking. 19. The air conditioner according to any one of claims 16 to 18, characterized in that the air conditioner further comprises an alarm; The processor is further configured to control the alarm to sound an alarm after confirming that the refrigerant of the air conditioner is leaking. 20. The air conditioner according to any one of claims 15 to 18, characterized in that, The first temperature sensor is an indoor return air sensor arranged at the return air outlet of the air conditioner; The second temperature sensor is a blowout temperature sensor arranged at the air outlet of the air conditioner. 21. The air conditioner according to claim 16, wherein: The processor is also used to record the cumulative working time of the compressor when the absolute value of the difference between the ambient temperature and the blowing temperature is greater than the preset value; When the accumulative working time of the compressor reaches a third preset duration, it is judged whether the current continuous working duration of the compressor reaches the first preset duration; If the continuous working time of the compressor of the air conditioner reaches the first preset duration, obtain the ambient temperature and the blowing temperature, and confirm whether the refrigerant of the air conditioner leaks according to the ambient temperature and the blowing temperature .