WO2016107252A1

WO2016107252A1 - Method for detecting cooling medium leakage, and air conditioner

Info

Publication number: WO2016107252A1
Application number: PCT/CN2015/092767
Authority: WO
Inventors: 庄华虎; 刘忠民
Original assignee: 海信科龙电器股份有限公司; 广东科龙空调器有限公司
Priority date: 2014-12-30
Filing date: 2015-10-23
Publication date: 2016-07-07
Also published as: CN104566863A

Abstract

A method for detecting cooling medium leakage and an air conditioner. The method comprises: when a continuous operating duration of a compressor of an air conditioner reaches a first preset duration, acquiring an indoor environment temperature and an outflow temperature of an indoor air outlet of the air conditioner; and determining whether leakage occurs to a cooling medium of the air conditioner according to the environment temperature and the outflow temperature. The detection method can realize the detection of cooling medium leakage while not increasing complete machine cost, thereby facilitating the promotion and application of an air conditioner.

Description

Method for detecting refrigerant leakage and air conditioner

This application claims priority to Chinese Patent Application No. 201410849594.3, entitled "A Method for Detecting Leakage of Refrigerant and Air Conditioning", filed on December 30, 2014, the entire contents of which is incorporated herein by reference. In the application.

Technical field

The invention relates to the field of air conditioning control, and in particular to a method for detecting leakage of a refrigerant 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. The air conditioning system also has a refrigerant, which is driven by the pressure generated by the compressor, circulates throughout the system, and exchanges heat with the indoor and outdoor environment to achieve the purpose of cooling or heating, so the amount of refrigerant directly affects the air conditioner. Cooling and heating effects. However, during the installation or use of the air conditioner, there may be a long-term slow leakage of the refrigerant caused by the high and low pressure connecting pipe nut of the indoor and outdoor unit, or the refrigerant of the outdoor unit is cracked and the refrigerant is cracked. Rapid leakage, which in turn affects the cooling and heating effects of air conditioners.

In the prior art, it is generally required to separately provide temperature sensors at the inlet and outlet of the air conditioner heat exchanger for detecting the temperature of the refrigerant at the inlet and the outlet of the air conditioner heat exchanger, respectively, when the temperature and the outlet of the refrigerant at the inlet of the air conditioner heat exchanger When the difference in the temperature of the refrigerant is greater than or equal to a specific value, it indicates that the refrigerant may be insufficient due to the leakage of the refrigerant, and the user may be alerted to the user, so that the user can perform inspection or maintenance in time. However, this method requires a dedicated temperature sensor, which increases the cost of the whole machine and is not conducive to the promotion and use of air conditioners.

Summary of the invention

The embodiment of the invention provides a method for detecting refrigerant leakage and an air conditioner, which can realize the detection of refrigerant leakage without increasing the cost of the whole machine, and is beneficial to the promotion and use of the air conditioner.

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

In one aspect, an embodiment of the present invention provides a method for detecting a refrigerant leakage for use in an air conditioner, the method comprising:

When the compressor of the air conditioner continues to work for a first predetermined period of time, acquiring an ambient temperature of the room and a blowing temperature of the indoor air outlet of the air conditioner;

Based on the ambient temperature and the blowing temperature, it is confirmed whether or not the refrigerant of the air conditioner leaks.

In another aspect, an embodiment of the present invention provides an air conditioner, where the air conditioner includes:

An acquiring unit, configured to acquire an ambient temperature of the room and a 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 period of time;

The confirmation 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 configured to detect an indoor ambient temperature;

The second temperature sensor is configured to detect a blowing temperature;

The processor is configured to acquire an ambient temperature of the indoor environment and a blowing temperature of the indoor air outlet of the air conditioner when the compressor of the air conditioner continues to work for a predetermined period of time, according to the ambient temperature and the blowing temperature , confirm whether the refrigerant of the air conditioner is A leak has occurred.

An embodiment of the present invention provides a method for detecting a refrigerant leakage and an air conditioner. The method for detecting a refrigerant leakage includes: when the compressor of the air conditioner continues to work for a first preset period of time, first acquiring an ambient temperature of the room and The blowing temperature of the indoor air outlet of the air conditioner is then determined whether or not 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 an existing sensor for acquiring an ambient temperature of an air conditioner and a sensor for acquiring a blowing temperature to respectively obtain an ambient temperature and a blowing temperature, when the air conditioning refrigerant is sufficient and the air conditioner is used for heating When the air-conditioning refrigerant is sufficient and the air conditioner is used for cooling, the blowing temperature should be much lower than the ambient temperature, and when the air-conditioning refrigerant has a large amount of leakage, the heat exchanger has poor heat exchange effect, regardless of the air conditioner. Whether heating or cooling is taking place, the ambient temperature is equivalent to the blowing temperature, so it is possible to determine the leakage of the air-conditioning refrigerant 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 separately provide a temperature sensor at the inlet and the outlet of the air conditioner heat exchanger, the existing sensor of the air conditioner can be used to confirm whether the refrigerant leaks, thereby reducing the cost of the whole machine, and is beneficial to the promotion and use of the air conditioner.

DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description are only It is a certain embodiment of the present invention, and other drawings can be obtained from those skilled in the art without any creative work.

FIG. 1 is a flowchart of a method for detecting a refrigerant leakage according to an embodiment of the present invention;

2 is a flowchart of another method for detecting refrigerant leakage according to an embodiment of the present invention;

3 is a schematic structural diagram of an air conditioner according to an embodiment of the present invention;

4 is a schematic structural diagram of another air conditioner according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of still another air conditioner according to an embodiment of the present invention; FIG.

FIG. 6 is a schematic structural diagram of still another air conditioner according to an embodiment of the present invention; FIG.

FIG. 7 is a schematic structural diagram of still another air conditioner according to an embodiment of the present invention; FIG.

FIG. 8 is a schematic structural diagram of still another air conditioner according to an embodiment of the present invention; FIG.

FIG. 9 is a schematic structural diagram of still another air conditioner according to an embodiment of the present invention.

detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

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

Step 101: When the compressor of the air conditioner continues to work for a predetermined period of time, obtain an ambient temperature of the room and a blowing temperature of the indoor air outlet of the air conditioner.

In practical applications, the 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 determine whether the ambient temperature is the same as the temperature set by the user, and the other sensor is used to obtain the blowing temperature of the indoor air outlet. It monitors the temperature of the cold/hot air blown by the air conditioner to prevent the blown air from being too cold or overheated, which affects 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 set temperature of the user. At the same time, the existing air conditioner can detect the blow-out temperature by blowing out the temperature sensor. For example, the existing air conditioner usually sets two preset temperature values, which are corresponding to the first preset temperature value when the air conditioner is cooled and the air conditioner is heated. The second preset value is tested by blowing out the temperature sensor when the air conditioner is cooling Blowing out the temperature, the blowing temperature is the temperature at the air outlet of the air conditioner, and then comparing the blowing temperature with the first preset temperature value, when the blowing temperature is greater than or equal to the first preset temperature value, the air conditioner is normally used, when the temperature is blown out When it is less than the first preset temperature value, the compressor stops working, so as to prevent the blowing temperature from being too low, the user feels cold, and prevents the heat exchanger from frosting due to too low temperature during cooling; when the air conditioner is heating, the temperature is blown out. The sensor tests the blowout temperature, and then compares the blowout temperature with the second preset temperature value. When the blowout temperature is greater than or equal to the second preset temperature value, the compressor stops working, and when the blowout temperature is less than the second preset temperature value, The air conditioner is normally used to prevent the temperature from being blown out too high, and the user feels hot, and at the same time prevents the working pressure of the compressor from being too high.

As the air conditioner is turned on, the compressor just starts to work. At this time, since the compressor may not be used for a long time, the effect is not obvious when the heating or cooling is started. At this time, the blowing temperature and the ambient temperature are originally equivalent, and according to the blowing temperature. According to the relationship between the ambient temperature and the temperature, it is impossible to judge whether the refrigerant in the heat exchanger is sufficient. Therefore, it is necessary to determine the relationship between the blow-out temperature and the ambient temperature after the compressor continues to work for a predetermined period of time. The first preset duration is set in advance, and may be set according to a specific situation in an actual application, which is not limited by the embodiment of the present invention.

Step 102: Confirm whether the refrigerant of the air conditioner leaks according to the ambient temperature and the blowing temperature.

When the air conditioning refrigerant is sufficient and the air conditioner is used for heating, the blowing temperature should be much larger than the ambient temperature. When the air conditioning refrigerant is sufficient and the air conditioner is used for cooling, the blowing temperature should be much lower than the ambient temperature, and when the air conditioning refrigerant has a large amount of leakage, The heat exchanger has a poor heat transfer effect. Whether the air conditioner is heating or cooling, the ambient temperature is equivalent to the blown temperature. Therefore, it can be determined whether the air conditioner refrigerant leaks according to the difference or ratio of the ambient temperature and the blown temperature.

For example, when determining whether the air conditioner refrigerant leaks according to the ratio of the ambient temperature to the blow-out temperature, first setting a first preset parameter corresponding to the air-conditioning heating and a second preset parameter corresponding to the air-conditioning cooling, and heating the air conditioner. When the ratio of the ambient temperature to the blow-out temperature is greater than the first preset parameter, it is confirmed that the air-conditioning refrigerant leaks; when the ambient temperature When the ratio of the degree to the blowing temperature is less than or equal to the first preset parameter, the air conditioning heating or cooling effect is good, and the refrigerant does not leak; when the air conditioning is cooled, the ratio of the ambient temperature to the blowing temperature is less than or equal to the second preset parameter. When it is confirmed that the air-conditioner refrigerant leaks; when the ratio of the ambient temperature to the blow-out temperature is greater than the second preset parameter, it indicates that the air-conditioning heating or cooling effect is good, and the refrigerant does not leak. The ambient temperature and the blow-out temperature are both in K (Kelvin), and K is a commonly used thermodynamic unit. In practical applications, °C (Celsius) can also be used, which is not limited in the embodiment of the present invention.

In this way, since the embodiment of the present invention does not need to separately set the temperature sensor at the inlet and the outlet of the air conditioner heat exchanger, the existing sensor of the air conditioner separately obtains the ambient temperature and the blow-out temperature, and then passes the ambient temperature and the blow-out temperature. Contrast, confirm whether the refrigerant leaks, reduce the cost of the whole machine, and is conducive to the promotion and use of air conditioners.

Optionally, when it is determined whether the refrigerant of the air conditioner leaks according to the ambient temperature and the blowing temperature, it may first be determined whether an absolute value of a 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 leaks.

If the refrigerant is sufficient, the difference between the blowing temperature and the ambient temperature during air-conditioning cooling is negative, and the difference between the blowing temperature and the ambient temperature during the heating of the air conditioner is a positive number. Therefore, it is necessary to determine the absolute value of the difference between the blowing temperature and the ambient temperature, and then pass the judgment result. Check if the refrigerant leaks. The preset value may be set according to a specific situation in an actual application, which is not limited by the embodiment of the present invention. For example, when the ambient temperature and the blowing temperature may both be in K, the preset value may be 3K or 2.5K.

For example, when the air conditioning refrigerant is sufficient and the air conditioner is used for heating, the blowing temperature should be much larger 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 leaks; When the air conditioning refrigerant is sufficient and the air conditioner 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 is determined that the air conditioning refrigerant leaks.

Optionally, the ambient temperature of the indoor environment and the blowing temperature of the indoor air outlet of the air conditioner may be obtained 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 to form a first period. . When the leakage of the refrigerant of the air conditioner is confirmed, the first period may be repeatedly performed N times when the absolute value of the difference between the ambient temperature and the blowing temperature is less than or equal to a preset value. The absolute value of the difference between the ambient temperature and the blow-out temperature in the first cycle is less than or equal to a preset value, and it is confirmed that the refrigerant of the air conditioner leaks, wherein there may be a preset between two adjacent first cycles. For the 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 the air-conditioning refrigerant is leaked only by the blow-out temperature obtained once, the misjudgment may occur, so the indoor can usually be acquired. 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 a preset value to constitute a first period, and each environment is acquired once in the first period. The temperature and the blowing temperature are continuously performed N times in the first cycle, that is, the N ambient temperature and the blowing temperature are continuously obtained, and whether the absolute value of the difference between the ambient temperature and the blowing temperature obtained in each first period is less than or equal to a preset value is determined. When the absolute value of the difference between the blow-out 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 leaks, thereby ensuring the correct rate of the confirmation result and reducing the misjudgment. In order to further ensure that when the compressor works stably, that is, the heat exchange efficiency of the heat exchanger is stable, the blowing temperature is obtained, and the first two consecutive periods can be executed continuously without intervals, and there may be a preset time interval. The result of the two consecutive first periods is not affected by each other, and the preset time interval is set in advance, and is set according to a specific situation in an actual application, which is not limited by the embodiment of the present invention. At the same time, if the compressor runs smoothly and the heat exchange efficiency of the heat exchanger is relatively uniform, there may be no preset time interval between the two adjacent first cycles.

For example, it is assumed 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 period is repeated 3 times. When the compressor continues to work for more than 5 minutes, the ambient temperature detected by the indoor return air sensor for the first time and the blow-out temperature detected by the blow-out temperature sensor are used, and the ambient temperature and blowing are judged for the first time. Whether the absolute value of the difference in temperature is less than or equal to the preset value, and then the ambient temperature detected by the indoor return air sensor and the blowing temperature detected by the blowing temperature sensor for the second time after 5 seconds, and the ambient temperature and the blowing temperature are determined for the second time. Whether the absolute value of the difference is less than or equal to the preset value, the ambient temperature detected by the indoor return air sensor for the third time and the blowing temperature detected by the blow-out temperature sensor after 5 seconds, and the difference between the ambient temperature and the blow-out temperature is determined for the third time. Whether the absolute value of the absolute value is less than or equal to the preset value, that is, the first cycle is repeated three times, and when the absolute value of the difference between the three ambient temperatures and the blow-out temperature is less than or equal to the preset value, it can be confirmed that the refrigerant of the air conditioner appears leakage.

Optionally, when the absolute value of the difference between the ambient temperature and the blow-out temperature is less than or equal to a preset value in each first cycle, the compressor is turned off, and then after a second preset duration, Resetting the compressor; when the compressor continues to work for the first preset duration, repeating the first cycle Q times, the Q is an integer greater than or equal to 1; The absolute value of the difference between the ambient temperature and the blowing temperature in the first cycle is less than or equal to a preset value, and the compressor is turned off until when the compressor continues to work for the first preset duration Repetitively executing Q times, the first period is a second period; repeating the second period of M times, the M is an integer greater than or equal to 1; if each first period of each second period 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 leaks.

In practical applications, when the air conditioner is just started, or the compressor of the air conditioner is restarted after a long time stop, even if the first cycle is repeated N times, it is possible that the compressor is unstable due to the start of the test, and the heat exchange is performed. The heat exchange efficiency of the device is unstable, so that the blowing temperature is unstable, which leads to a misjudgment of the determination result. Therefore, the first cycle can be repeatedly performed 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, select to temporarily turn off the compressor, and then restart the compressor after the second preset period of time, and repeat again after the compressor continues to work for the first preset period of time. Performing N times of the first cycle, determining whether the absolute value of the difference between the ambient temperature and the blowing temperature in each first cycle when performing again is less than or equal to a preset value, and when performing again in each first cycle When the absolute value of the difference between the ambient temperature and the blowing temperature is still less than or equal to the preset value, the probability of the first misjudgment is small, and the accuracy can be continuously performed multiple times in order to ensure the accuracy of the confirmation. When all are unified, confirm the leakage of air-conditioning refrigerant to prevent misjudgment.

For example, if the absolute value of the difference between the ambient temperature and the blow-out 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 for a long time. When the first preset duration is described, the first period is repeated Q times to form a second period; the second period is repeated M times, where M and Q are preset, and the actual application is performed according to specific conditions. The setting of the embodiment of the present invention is not limited thereto. After the first repetition of the first N cycles of 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, the first second cycle is entered. Execution, so that when the second cycle is repeated 2 times, the first cycle is performed 3N times, so that the probability of misjudgment is 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, after a continuous judgment can confirm that the refrigerant of the air conditioner leaks, it indicates that the air conditioner is not working properly, so the user can be alerted to promptly repair and replenish the refrigerant. There are various ways to send an alarm. An alarm light can be set on the air conditioner. When it is confirmed that the refrigerant leaks, the alarm light can be illuminated to alert the user; or, a buzzer can be installed on the air conditioner to confirm that the refrigerant leaks. When the knowledge buzzer beeps, the user is alerted. In practical applications, after the leakage of the refrigerant of the air conditioner is confirmed, the air conditioner may first turn off the compressor to prevent the compressor from being irreversibly damaged by the continuous operation of the refrigerant in the case of insufficient refrigerant.

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

Further, determining an absolute value of a difference between the ambient temperature and the blowing temperature After the value is less than or equal to the preset value, the method further includes: recording an accumulated working time of the compressor when an absolute value of the difference between the ambient temperature and the blowing temperature is greater than the preset value; When the accumulated working time of the compressor reaches the third preset duration, it is determined whether the current working duration of the compressor reaches the first preset duration; if the current compressor of the air conditioner continues to work for the first preset The duration is obtained by obtaining the ambient temperature and the blowing temperature, and confirming whether the refrigerant of the air conditioner leaks according to the ambient temperature and the blowing temperature.

In practical applications, during the operation of the compressor, the refrigerant may leak rapidly due to cracking and stress of the outdoor unit. Therefore, when the refrigerant is not leaked, the cumulative operation of the compressor can be recorded. Time, when the cumulative working time of the compressor reaches the third preset duration, it indicates that the compressor has been working for a long time, and it is likely that the refrigerant pipeline will crack due to the vibration and stress of the outdoor unit pipeline, causing the refrigerant to appear. Leakage, so it is possible to detect whether there is a leak in the air-conditioning refrigerant. In order to ensure that the blow-out temperature is obtained under the condition that the compressor is stably operated, it may first be determined whether the current working duration of the compressor reaches the first preset duration, and if the current compressor of the air conditioner continues to work for the first time. The preset period is performed, and the first period is executed, that is, whether or not the refrigerant leaks is detected.

Optionally, when it is determined that there is no leakage of the air-conditioning refrigerant, the accumulated working time of the compressor may be cleared, and then the cumulative working time of the compressor is continuously recorded. When the accumulated working time of the compressor reaches the third preset time, it may be determined again. Whether the refrigerant leaks, so that the refrigerant is not detected when the air conditioner is just turned on, and the refrigerant is detected in real time during the operation of the air conditioner to ensure that the refrigerant 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 in the case of a small amount or lack of refrigerant, causing damage to the compressor.

An embodiment of the present invention provides a method for detecting a refrigerant leakage. First, when the compressor of the air conditioner continues to work for a predetermined period of time, the ambient temperature of 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 to the prior art, Since the embodiment of the present invention does not need to separately provide a temperature sensor at the inlet and the outlet of the air conditioner heat exchanger, the existing sensor of the air conditioner can be used to confirm whether the refrigerant leaks, thereby reducing the cost of the whole machine, and is beneficial to the promotion and use of the air conditioner.

An embodiment of the present invention provides a method for detecting a refrigerant leakage. As shown in FIG. 2, the embodiment of the present invention assumes that the first cycle is repeatedly performed three times, and the second cycle is repeatedly performed three times. The first preset duration is 5 minutes, and the adjacent two are adjacent. The preset time interval exists between the second period is 5 seconds, the second preset duration is 3 minutes, and the preset value is 2.5K (Kelvin). The embodiment of the present invention is only an exemplary description, and is not for the above parameters. The value is limited. At the same time, the embodiment of the present invention obtains the ambient temperature by the indoor return air sensor, and obtains the blow-out temperature by blowing out the temperature sensor. In actual applications, the ambient temperature and the blow-out temperature can be separately obtained by other sensors provided in the air conditioner, which is not used in the embodiment of the present invention. limited. Specifically, the method for detecting refrigerant leakage includes:

Step 201: Turn on the air conditioner, start the compressor, record the long time of continuous operation of the compressor, N is equal to 0, M is equal to 0, and step 202 is performed.

With the opening of the air conditioner, the compressor just started to work. At this time, because the compressor has not been used for a long time, when the cooling or heating is started, the blowing temperature and the ambient temperature are equivalent. 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. Therefore, it is necessary to record the continuous working time of the compressor. When the continuous working time of the compressor satisfies the preset condition, it is possible to judge whether the refrigerant leaks by obtaining the ambient temperature and the blowing temperature, thereby improving the judgment result. The correct rate.

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

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

In practical applications, it is necessary to continue working for the first preset period of time before the compressor is judged. The relationship between the temperature of the blown air and the ambient temperature. The first preset duration is set in advance, and may be set according to a specific situation in an actual application, which is not limited by the embodiment of the present invention.

In practical applications, the existing air conditioner needs to detect the indoor ambient temperature, and then compares the measured ambient temperature with the temperature set by the user to determine whether the current ambient temperature reaches the set temperature of the user. At the same time, the existing air conditioner needs to detect the blowing temperature to prevent the outlet temperature from being too low or too high, which affects the user's comfort, and avoids the frosting of the heat exchanger due to too low temperature or the working pressure of the compressor is too high, so The sensor for detecting the ambient temperature and the sensor for detecting the blow-out temperature are standard configurations of the existing air conditioner. The embodiment of the present invention is described by taking an indoor return air sensor and a blow-out temperature sensor to obtain an ambient temperature and a blow-out temperature. In the embodiment of the present invention, both the ambient temperature and the blowing temperature are in units of K.

Step 203: Determine 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, step 209 is performed.

If the refrigerant is sufficient, the difference between the blowing temperature and the ambient temperature during air-conditioning cooling is negative, and the difference between the blowing temperature and the ambient temperature during the heating of the air conditioner is a positive number. Therefore, it is necessary to determine the absolute value of the difference between the blowing temperature and the ambient temperature, when the temperature is blown out. When the absolute value of the difference in ambient temperature is less than 2.5K, it means that the blowing temperature is not much different from the ambient temperature. However, in the case of sufficient refrigerant, when the air conditioner is cooling, the blowing temperature should be much lower than the ambient temperature. When the air conditioner is heating, the blowing temperature should be much larger than the ambient temperature. That is to say, in the case of sufficient refrigerant, the air conditioner is normal. When working, the absolute value of the difference between the blowing temperature and the ambient temperature should be large. If the absolute value of the difference between the blowing temperature and the ambient temperature is less than 2.5K, the blowing temperature is close to the ambient temperature, which is due to a large amount of leakage of the air conditioning refrigerant. The compressor cannot be caused by normal cooling or heating. The 2.5K is set according to the specific situation, which is not limited by the embodiment of the present invention.

Step 204, N plus 1, step 205 is performed.

In step 205, it is determined whether N is equal to 3. When N is equal to 3, step 206 is performed; when N is not equal to 3, after 5 seconds, step 202 is performed.

In practical applications, the compressor may be unstable after the air conditioner is turned on. Therefore, if the air-conditioning refrigerant is leaked only by the blow-out temperature obtained once, the misjudgment may occur, so the above steps can usually be repeated. 3 times. For example, the ambient temperature of the indoor environment and the blowing temperature of the indoor air outlet of the air conditioner and the absolute value of the difference between the ambient temperature and the blowing temperature may be determined to be less than or equal to a preset value to form a first period. Parameter N, each time the first cycle is performed, N is incremented by 1. When N is equal to 3, the first cycle is completed three times, and the absolute difference between the ambient temperature and the blown temperature in each first cycle is absolute. The values are all less than or equal to 2.5K, which can preliminarily determine that the refrigerant may have leaked.

However, when the first cycle is repeated three times, the operation of the compressor may not be stable, or the compressor may not be fully heated or cooled, and the blowing temperature may not be very high or low, even if each 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 may not be caused by the leakage of the refrigerant. Therefore, in the actual application, the above steps can be performed three times to reduce the false positive rate.

In step 206, it is determined whether M is equal to 3. When M is not equal to 3, step 207 is performed; when M is equal to 3, step 211 is performed.

In the actual application, the first cycle can be repeatedly executed within a reasonable range. For example, the first cycle can be executed three times each time, and M times are performed continuously. When M is equal to 3, it indicates that the first cycle has been executed 9 times. At this time, the probability of misjudgment is small. Therefore, after each execution of the first period three times, in order to ensure the number of executions of the first period, it is also required to determine whether the M is equal to the preset threshold. In the embodiment of the present invention, the preset threshold is 3.

Step 207, M is incremented by 1, and step 208 is performed.

Step 208: Restart the compressor after the compressor is turned off for three minutes, and step 202 is performed.

After the first cycle is repeated N times, in the embodiment of the present invention, N 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, the refrigerant may appear. Leakage, but this result may also be caused by unstable compressor operation. It is impossible to completely determine the leakage of the refrigerant. 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, the compressor can be turned off for 3 minutes, then the compressor is turned back on, and the ambient temperature and the blown temperature are regained.

Step 209: The compressor works normally, and the accumulated working time of the compressor is recorded, and step 210 is performed.

When the absolute value of the difference between the ambient temperature and the blowing temperature is greater than 2.5K, the difference between the blowing temperature and the ambient temperature is large, further indicating 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 accumulated working time of the compressor reaches a third preset duration, determine whether the current working duration of the compressor reaches the first preset duration, and if the current compressor of the air conditioner continues to work for a long time When the first preset duration is reached, step 202 is performed; if the duration of the compressor of the air conditioner is currently less than the first preset duration, step 209 is performed.

In practical applications, during the operation of the compressor, the refrigerant may leak rapidly due to cracking and stress of the outdoor unit. Therefore, when the refrigerant is not leaked, the cumulative operation of the compressor can be recorded. Time, when the cumulative working time of the compressor reaches the third preset duration, it indicates that the compressor has been working for a long time, and it is likely that the refrigerant pipeline will crack due to the vibration and stress of the outdoor unit pipeline, causing the refrigerant to appear. Leakage, so it is possible to detect whether there is a leak in the air-conditioning refrigerant again. In order to ensure that the blow-out temperature is obtained under the condition that the compressor is stably operated, it may first be determined whether the current working duration of the compressor reaches the first preset duration, and when the compressor of the air conditioner continues to work, the first pre-period is reached. When the duration is set, step 202 is performed to detect whether or not the refrigerant leaks.

Step 211, lighting the alarm light.

The absolute value of the difference between the ambient temperature and the blow-out temperature in each first cycle may be less than or equal to a preset value, and the compressor is turned off to the second time for the second time to perform the first cycle as a second period, after repeatedly performing the second period for M consecutive times, if the absolute value of the difference between the ambient temperature and the blowing temperature is less than or equal to a preset in each first period of each second period The value, at this time, the false positive rate is low, and the refrigerant of the air conditioner can be completely confirmed to leak, so that the warning light can be illuminated to warn the user of the refrigerant leakage, so that the user can timely repair the air conditioner and replenish the refrigerant. In practical applications, the compressor can also be turned off first to prevent the compressor from being damaged by continuous operation in the case of insufficient refrigerant.

Compared with the prior art, the embodiment of the present invention uses the existing sensors of the air conditioner to separately obtain the ambient temperature and the blowing temperature. When the air conditioning refrigerant is sufficient and the air conditioner is used for heating, the blowing temperature should be much larger than the ambient temperature, so according to the above Regularity can determine the leakage of air conditioning refrigerant. Since the embodiment of the present invention does not need to separately provide a temperature sensor at the inlet and the outlet of the air conditioner heat exchanger, the existing sensor of the air conditioner can be used to confirm whether the refrigerant leaks, thereby reducing the cost of the whole machine, and is beneficial to the promotion 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 obtaining unit 301 is configured to acquire an ambient temperature of the indoor air and a 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 predetermined time period.

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

With the opening of the air conditioner 30, the compressor just started to work. At this time, since the compressor is not used for a long time, the blowing temperature and the ambient temperature are originally equivalent. At this time, according to the relationship between the blowing temperature and the ambient temperature, it is impossible to judge whether the refrigerant is sufficient. Therefore, it is necessary to determine the magnitude relationship between the blowing temperature and the ambient temperature after the compressor is continuously operated for a predetermined period of time. The first preset duration is set in advance, and may be set according to a specific situation in an actual application, which is not limited by the 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 conditioning refrigerant is sufficient and the air conditioner is used for heating, the blowing temperature should be much larger than the ambient temperature. When the air conditioning refrigerant is sufficient and the air conditioner is used for cooling, the blowing temperature should be much lower than the ambient temperature, and when the air conditioning refrigerant has a large amount of leakage, The compressor cannot perform effective work. No matter whether the air conditioner is heating or cooling, the ambient temperature is equivalent to the blow-out temperature. Therefore, it can be determined whether the air-conditioner refrigerant leaks according to the difference or ratio of the ambient temperature and the blow-out temperature.

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

Optionally, whether the absolute value of the difference between the ambient temperature of the indoor air outlet and the air outlet of the air conditioner 30 is determined to be a first period is determined whether the absolute value of the difference between the ambient temperature and the blow-out 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 perform the first period N times, where the N is an integer greater than or equal to 1; the confirming unit 302 is specifically configured to: 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, whether the absolute value of the difference between the ambient temperature and the blow-out temperature is less than or equal to a preset value is the first period from the ambient temperature of the indoor chamber and the blow-out temperature of the indoor air outlet of the air conditioner.

As shown in FIG. 5, the air conditioner 30 further includes a second execution unit 304 for repeatedly performing the first period N times, the N being an integer greater than or equal to 1; if each of the first periods is 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 the second predetermined period of time, the compressor is restarted; when the compressor continues to work for a long time When the first preset time period is repeated, the first period is repeated Q times, and the Q is an integer greater than or equal to 1; wherein the difference between the ambient temperature and the blowing temperature in each first period is The absolute value is less than or equal to the preset value, and the compressor is turned off until when the compressor continues to work for the first preset duration, and the first period is repeated for the second period again; Performing the second period of M times, the M being an integer greater than or equal to 1;

The confirmation unit 302 is specifically configured to: 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 period of each second period, confirm the refrigerant of the air conditioner A leak has occurred.

Further, as shown in FIG. 6, the air conditioner 30 further includes:

The control unit 305 is configured to issue an alarm after the confirmation of the leakage of the refrigerant of the air conditioner 30.

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 by a blowout temperature sensor of the air conditioner.

Further, as shown in FIG. 7, the air conditioner 30 further includes:

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

The determining unit 307 is configured to determine whether the current working duration of the compressor reaches the first preset duration when the accumulated working time of the compressor reaches a third preset duration.

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

The confirmation unit 302 is further configured to: according to the ambient temperature and the blowing temperature, Check if the refrigerant of the air conditioner leaks.

An embodiment of the present invention provides an air conditioner. First, when the compressor of the air conditioner continues to work for a predetermined period of time, the acquisition unit acquires an ambient temperature of the room and a blowing temperature of the indoor air outlet of the air conditioner, and then The confirmation unit confirms that the refrigerant of the air conditioner leaks. Compared with the prior art, since the embodiment of the present invention does not need to separately provide a temperature sensor at the inlet and the outlet of the air conditioner heat exchanger, the existing sensor of the air conditioner can be used to confirm whether the refrigerant leaks, thereby reducing the cost of the whole machine. Conducive to the promotion of air conditioning.

The embodiment of the present invention provides an air conditioner 80, which includes 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 configured to detect an indoor ambient temperature;

The second temperature sensor 802 is configured to detect a blowout temperature;

The processor 803 is configured to acquire an ambient temperature of the indoor environment and a blowing temperature of the indoor air outlet of the air conditioner 80 when the compressor of the air conditioner 80 continues to work for a predetermined period of time, according to the ambient temperature The blowing temperature confirms whether or not the refrigerant of the air conditioner 80 leaks.

In this way, the air conditioner according to the embodiment of the present invention does not need to separately provide a temperature sensor at the inlet and the outlet of the air conditioner heat exchanger, but uses the existing sensor for detecting the ambient temperature of the air conditioner and the sensor for detecting the blow temperature to confirm the refrigerant. Whether it leaks, reduces the cost of the whole machine, and is conducive to the promotion and use of air conditioners.

Further, the processor 803 is specifically configured to:

Determining whether an 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 leaks.

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

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

If the absolute value of the difference between the ambient temperature and the blow-out 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 leaks.

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

Turning off the compressor 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;

After the second preset time period, restarting the compressor;

When the duration of the continuous operation of the compressor reaches the first preset duration, the first period is repeated 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 compressor continues to work for the first time. When the preset time is long, the first cycle is repeated for the second cycle.

Repeating the second period of M times, the M being an integer greater than or equal to 1;

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

Optionally, the processor 803 is further configured to: confirm the refrigerant of the air conditioner 80 After the leak occurs, the compressor is turned off.

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 the confirmation of the leakage of the refrigerant of the air conditioner 80.

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

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

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

When the accumulated working time of the compressor reaches a third preset duration, determining whether the current working duration of the compressor reaches the first preset duration;

If the current duration of the compressor of the air conditioner 80 reaches the first preset duration, the ambient temperature and the blowing temperature are acquired, and according to the ambient temperature and the blowing temperature, whether the refrigerant of the air conditioner 80 is confirmed A leak has occurred.

An embodiment of the present invention provides an air conditioner, which first acquires an ambient temperature and a blowing temperature of the air conditioner when the compressor of the air conditioner continues to work for a predetermined period of time, and then confirms the air temperature according to the ambient temperature and the blowing temperature. Air conditioning refrigerant leaked. Compared with the prior art, the air conditioner according to the embodiment of the present invention does not need to separately set a temperature sensor at the inlet and the outlet of the air conditioner heat exchanger, but uses the existing sensor of the air conditioner to confirm whether the refrigerant leaks or not. The cost of the whole machine is conducive to the promotion and use of air conditioners.

A person skilled in the art can clearly understand that, for the convenience and brevity of the description, the specific working process of the device and the unit described above can refer to the corresponding process in the foregoing method embodiment, and details are not described herein again.

In the several embodiments provided by the present application, it should be understood that the disclosed apparatus and method may be implemented in other manners. For example, the device implementation described above The example is merely illustrative. For example, the division of the unit is only a logical function division, and the actual implementation may have another division manner, for example, multiple units or components may be combined or integrated into another system, or Some features can be ignored or not executed.

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

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or may be physically included in each unit, or two or more units may be integrated into one unit. The above integrated unit 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 the present invention is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention. It should be covered by the scope of the present invention. Therefore, the scope of the invention should be determined by the scope of the appended claims.

Claims

A method for detecting refrigerant leakage for an air conditioner, characterized in that the method comprises:

When the compressor of the air conditioner continues to work for a first predetermined period of time, acquiring an ambient temperature of the room and a blowing temperature of the indoor air outlet of the air conditioner;

Based on the ambient temperature and the blowing temperature, it is confirmed whether or not the refrigerant of the air conditioner leaks.
The method according to claim 1, wherein the confirming whether the refrigerant of the air conditioner leaks according to the ambient temperature and the blowing temperature comprises:

Determining whether an 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 leaks.
The method of claim 2, wherein

Obtaining whether the absolute value of the difference between the ambient temperature and the blow-out temperature is less than or equal to a preset value as a first period from the ambient temperature of the indoor chamber and the blow-out temperature of the indoor air outlet of the air conditioner;

The method further includes: before the absolute value of the difference between the ambient temperature and the blowing temperature is less than or equal to a preset value, and confirming that the refrigerant of the air conditioner is leaking, the method further includes:

Repeating the first cycle N times, the N being 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, it is confirmed that the leakage of the refrigerant of the air conditioner is:

If the absolute value of the difference between the ambient temperature and the blow-out temperature in each first cycle is less than or equal to a preset value, it is confirmed that the refrigerant of the air conditioner leaks.
The method of claim 2, wherein

Obtaining whether the absolute value of the difference between the ambient temperature and the blow-out temperature is less than or equal to a preset value as a first period from the ambient temperature of the indoor chamber and the blow-out temperature of the indoor air outlet of the air conditioner;

Repeating the first cycle N times, the N being an integer greater than or equal to 1;

Turning off the compressor 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;

After the second preset time period, restarting the compressor;

When the duration of the continuous operation of the compressor reaches the first preset duration, the first period is repeated 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 compressor continues to work for the first time. When the preset time is long, the first cycle is repeated for the second cycle.

Repeating the second period of M times, the M being 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, it is confirmed that the leakage of the refrigerant of the air conditioner is:

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 of the first periods of each second period, it is confirmed that the refrigerant of the air conditioner leaks.
The method according to any one of claims 2 to 4, wherein after the confirming that the refrigerant of the air conditioner is leaking, the method further comprises:

The air conditioner issues an alarm.
A method according to any 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 blowout temperature is detected by a blowout temperature sensor of the air conditioner.
The method according to claim 2, wherein after determining 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:

Recording an accumulated working time of the compressor when an absolute value of a difference between the ambient temperature and the blowing temperature is greater than the preset value;

When the accumulated working time of the compressor reaches a third preset duration, determining whether the current working duration of the compressor reaches the first preset duration;

If the current working time of the compressor of the air conditioner reaches a first preset duration, the ambient temperature and the blowing temperature are acquired, and according to the ambient temperature and the blowing temperature, whether the refrigerant of the air conditioner leaks is confirmed. .
An air conditioner, characterized in that the air conditioner comprises:

An acquiring unit, configured to acquire an ambient temperature of the room and a 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 period of time;

The confirmation unit is configured to confirm whether the refrigerant of the air conditioner leaks according to the ambient temperature and the blowing temperature.
The air conditioner according to claim 8, wherein the confirmation unit is specifically configured to:

Determining whether an 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 leaks.
The air conditioner according to claim 9, wherein

Obtaining whether the absolute value of the difference between the ambient temperature and the blow-out temperature of the indoor air temperature of the indoor air outlet is less than or equal to a preset value is a first period;

The air conditioner further includes a first execution unit, configured to repeatedly perform the first period of N times, wherein the N is an integer greater than or equal to 1;

The confirmation unit is specifically configured to:

If the absolute value of the difference between the ambient temperature and the blow-out temperature in each first cycle is less than or equal to a preset value, it is confirmed that the refrigerant of the air conditioner leaks.
The air conditioner according to claim 9, wherein

Obtaining whether the absolute value of the difference between the ambient temperature and the blow-out temperature is less than or equal to a preset value as a first period from the ambient temperature of the indoor chamber and the blow-out temperature of the indoor air outlet of the air conditioner;

The air conditioner further includes a second execution unit, configured to repeatedly perform the first period of N times, wherein the N is an integer greater than or equal to 1;

Turning off the compressor 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;

After the second preset time period, restarting the compressor;

When the duration of the continuous operation of the compressor reaches the first preset duration, the first period is repeated 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 compressor continues to work for the first time. When the preset time is long, the first cycle is repeated for the second cycle.

Repeating the second period of M times, the M being an integer greater than or equal to 1;

The confirmation unit is specifically configured to:

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 of the first periods of each second period, it is confirmed that the refrigerant of the air conditioner leaks.
The air conditioner according to any one of claims 9 to 11, wherein the air conditioner further comprises:

And a control unit, configured to issue an alarm after the confirmation that the refrigerant of the air conditioner leaks.
An air conditioner according to any one of claims 8 to 11, wherein

The ambient temperature is detected by an indoor return air sensor of the air conditioner, and the blowout temperature is detected by a blowout temperature sensor of the air conditioner.
The air conditioner according to claim 9, wherein the air conditioner further comprises:

a recording unit, configured to record an accumulated working time of the compressor when an absolute value of a difference between the ambient temperature and the blowing temperature is greater than the preset value;

a judging unit, configured to: when the accumulated working time of the compressor reaches a third preset duration And determining whether the current working duration of the compressor reaches the first preset duration;

The obtaining unit is further configured to acquire the ambient temperature and the blowing temperature if the compressor of the air conditioner is continuously operated for a first preset duration;

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

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

The first temperature sensor is configured to detect an indoor ambient temperature;

The second temperature sensor is configured to detect a blowing temperature;

The processor is configured to acquire an ambient temperature of the indoor environment and a blowing temperature of the indoor air outlet of the air conditioner when the compressor of the air conditioner continues to work for a predetermined period of time, according to the ambient temperature and the blowing temperature Confirm whether the refrigerant of the air conditioner leaks.
The air conditioner according to claim 15, wherein the processor is specifically configured to:

Determining whether an 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 leaks.
The air conditioner according to claim 16, characterized in that

Obtaining whether the absolute value of the difference between the ambient temperature and the blow-out temperature is less than or equal to a preset value as a first period from the ambient temperature of the indoor chamber and the blow-out temperature of the indoor air outlet of the air conditioner;

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

If the absolute value of the difference between the ambient temperature and the blow-out temperature in each first cycle is less than or equal to a preset value, it is confirmed that the refrigerant of the air conditioner leaks.
The air conditioner according to claim 16, characterized in that

Obtaining whether the absolute value of the difference between the ambient temperature and the blow-out temperature is less than or equal to a preset value as a first period from the ambient temperature of the indoor chamber and the blow-out temperature of the indoor air outlet of the air conditioner;

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

Turning off the compressor 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;

After the second preset time period, restarting the compressor;

When the duration of the continuous operation of the compressor reaches the first preset duration, the first period is repeated 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 compressor continues to work for the first time. When the preset time is long, the first cycle is repeated for the second cycle.

Repeating the second period of M times, the M being 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 in each of the first periods of each second period, it is confirmed that the refrigerant of the air conditioner leaks.
The air conditioner according to any one of claims 16 to 18, wherein the air conditioner further comprises an alarm;

The processor is further configured to control the alarm to issue an alarm after the confirming that the refrigerant of the air conditioner leaks.
An air conditioner according to any one of claims 15 to 18, wherein

The first temperature sensor is an indoor return air sensor disposed at the air return air outlet;

The second temperature sensor is a blowout temperature sensor disposed at the air outlet of the air conditioner.
The air conditioner according to claim 16, characterized in that

The processor is further configured to record an accumulated working time of the compressor when an absolute value of a difference between the ambient temperature and the blowing temperature is greater than the preset value;

When the accumulated working time of the compressor reaches a third preset duration, determining whether the current working duration of the compressor reaches the first preset duration;

If the current working time of the compressor of the air conditioner reaches a first preset duration, the ambient temperature and the blowing temperature are acquired, and according to the ambient temperature and the blowing temperature, whether the refrigerant of the air conditioner leaks is confirmed. .