CN114543258A - Method for detecting refrigerant leakage, air conditioner and computer storage medium - Google Patents

Abstract

The invention discloses a method for detecting refrigerant leakage, which comprises the following steps: when an indoor fan of an air conditioner runs, acquiring a first concentration detected by a refrigerant sensor of the air conditioner; when the first concentration is smaller than the preset concentration, executing preset operation to slow down the air flow in the space where the refrigerant sensor is located; after the preset operation is executed, acquiring a second concentration detected by the refrigerant sensor; and judging whether refrigerant leakage exists according to the second concentration. The invention also discloses an air conditioner and a computer storage medium. When the indoor fan runs, the indoor fan executes preset operation to slow down air flow in the space where the refrigerant sensor is located, and by reducing diffusion of leaked refrigerants, the influence of the indoor fan on the concentration detected by the refrigerant sensor due to accelerated air flow is reduced, refrigerant leakage is detected more timely, and the safety of refrigerants of the air conditioner is improved.

Description

Method for detecting refrigerant leakage, air conditioner and computer storage medium

technical field

The present invention relates to the technical field of air conditioners, in particular to a method for detecting refrigerant leakage, an air conditioner and a computer storage medium.

Background technique

In an air conditioning system, a refrigerant sensor is usually provided to detect whether there is refrigerant leakage. When the refrigerant concentration detected by the refrigerant sensor is greater than the set alarm value, the refrigerant sensor will alarm.

When the indoor fan of the air conditioner is running, even if a refrigerant leak occurs, the leaked refrigerant will quickly spread to other indoor areas under the influence of the air outlet from the indoor unit, so that the refrigerant concentration detected by the refrigerant sensor is lower than the actual concentration of the refrigerant leakage. The leakage alarm is not timely, which increases the risk of refrigerant leakage.

The above content is only used to assist the understanding of the technical solutions of the present invention, and does not mean that the above content is the prior art.

SUMMARY OF THE INVENTION

The main purpose of the present invention is to provide a refrigerant leakage detection method, an air conditioner and a computer storage medium, aiming at slowing down the air flow in the space where the refrigerant sensor is located, and reducing the influence of the indoor fan accelerating the air flow on the concentration detected by the refrigerant sensor.

In order to achieve the above object, the present invention provides a method for detecting refrigerant leakage, the method for detecting refrigerant leakage includes the following steps:

When the indoor fan of the air conditioner is running, acquiring the first concentration detected by the refrigerant sensor of the air conditioner;

When the first concentration is less than a preset concentration, a preset operation is performed to slow down the air flow in the space where the refrigerant sensor is located;

After performing the preset operation, obtain the second concentration detected by the refrigerant sensor;

Whether there is refrigerant leakage is determined according to the second concentration.

Optionally, the preset operation includes at least one of the following:

reduce the rotational speed of the indoor fan;

Turn off the fresh air function of the air conditioner.

Optionally, the step of judging whether there is refrigerant leakage according to the second concentration includes:

obtaining a preset concentration range, wherein the minimum concentration value in the preset concentration range is greater than or equal to the preset concentration;

Determining whether the second concentration is within the preset concentration range, wherein, when the second concentration is within the preset concentration range, it is determined that there is refrigerant leakage, and when the second concentration is not within the preset concentration In the range, it is determined that there is no refrigerant leakage.

Optionally, after the step of judging whether the second concentration is within the preset concentration range, the method further includes:

When the second concentration is not within the preset concentration range, outputting prompt information that the refrigerant sensor is abnormal.

Optionally, when the first concentration is less than a first preset concentration, the step of performing a preset operation includes:

When the first concentration is less than the preset concentration, start timing;

The preset operation is performed when the timing duration is greater than or equal to the first preset duration.

Optionally, after the step of acquiring the first concentration detected by the refrigerant sensor of the air conditioner, the step of the refrigerant leakage detection method further includes:

When the first concentration is greater than or equal to the preset concentration, it is determined that there is refrigerant leakage.

Optionally, when the indoor fan of the air conditioner is running, the step of acquiring the first concentration detected by the refrigerant sensor of the air conditioner includes:

When the indoor fan is running, obtaining the continuous running time of the indoor fan;

Obtain the first concentration detected by the refrigerant sensor of the air conditioner when the continuous running duration of the indoor fan is greater than a second preset duration.

Optionally, after performing the preset operation, the step of acquiring the second concentration detected by the refrigerant sensor includes:

After the third preset duration of the preset operation is performed, the second concentration detected by the refrigerant sensor is acquired.

Optionally, when the indoor fan of the air conditioner is running, the step of acquiring the first concentration detected by the refrigerant sensor of the air conditioner includes:

When the indoor fan is running, obtain the ambient temperature of the working space of the air conditioner;

When the temperature difference between the ambient temperature and the set temperature of the air conditioner is less than a preset difference value, the first concentration detected by the refrigerant sensor of the air conditioner is acquired.

Optionally, the method for detecting refrigerant leakage further includes:

When it is determined that there is refrigerant leakage, an alarm prompt message is output, and the rotational speed of the indoor fan is increased.

In addition, in order to achieve the above object, the present invention also provides an air conditioner, the air conditioner includes: a memory, a processor, and a refrigerant leakage detection program stored in the memory and running on the processor. When the refrigerant leakage detection program is executed by the processor, the steps of any one of the refrigerant leakage detection methods described above are implemented.

In addition, in order to achieve the above object, the present invention also provides a computer storage medium, the computer storage medium stores a refrigerant leakage detection program, and the refrigerant leakage detection program is executed by a processor to realize any one of the above The steps of the detection method for refrigerant leakage described in item.

In the method for detecting refrigerant leakage, the air conditioner, and the computer storage medium proposed in the embodiments of the present invention, when the indoor fan of the air conditioner is running, the first concentration detected by the refrigerant sensor of the air conditioner is acquired, and the first concentration is less than When the concentration is preset, a preset operation is performed to slow down the air flow in the space where the refrigerant sensor is located, and after the preset operation is performed, a second concentration detected by the refrigerant sensor is obtained, and judgment is made according to the second concentration Whether there is a refrigerant leak. When the indoor fan is running, the present invention performs a preset operation to slow down the air flow in the space where the refrigerant sensor is located. By reducing the diffusion of the leaked refrigerant, the influence of the accelerated air flow of the indoor fan on the concentration detected by the refrigerant sensor can be reduced, and the leakage of refrigerant can be reduced. The detection is more timely, and the safety of the refrigerant of the air conditioner is improved.

Description of drawings

1 is a schematic diagram of a terminal structure of a hardware operating environment involved in an embodiment of the present invention;

FIG. 2 is a schematic flowchart of an embodiment of refrigerant leakage detection according to the present invention;

3 is a schematic flow chart of another embodiment of refrigerant leakage detection according to the present invention;

FIG. 4 is a schematic flow chart of yet another embodiment of refrigerant leakage detection according to the present invention.

The realization, functional characteristics and advantages of the present invention will be further described with reference to the accompanying drawings in conjunction with the embodiments.

Detailed ways

It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

The embodiment of the present invention provides a solution. When the indoor fan is running, a preset operation is performed to slow down the air flow in the space where the refrigerant sensor is located. Due to the influence of the concentration of the air conditioner, the detection of refrigerant leakage is more timely, and the safety of the refrigerant of the air conditioner is improved.

As shown in FIG. 1 , FIG. 1 is a schematic structural diagram of a terminal of a hardware operating environment involved in an embodiment of the present invention.

The terminal in the embodiment of the present invention is an air conditioner, and the air conditioner is provided with a refrigerant sensor, and the refrigerant sensor is used to detect whether the refrigerant circulating in the air conditioner leaks. The refrigerant sensor may be installed inside the air conditioner or outside the air conditioner. For example, the refrigerant sensor may be installed on the air outlet of the air outlet of the air conditioner, or may be installed at other locations in the air conditioner where refrigerant leakage is likely to occur.

As shown in FIG. 1 , the terminal may include: a processor 1001 , such as a CPU, a communication bus 1002 , a user interface 1003 , and a memory 1004 . Among them, the communication bus 1002 is used to realize the connection and communication between these components. The user interface 1003 may include a display screen (Display), an input unit such as a keyboard (Keyboard), and the optional user interface 1003 may also include a standard wired interface and a wireless interface. The memory 1004 may be high-speed RAM memory, or may be non-volatile memory, such as disk memory. Optionally, the memory 1004 may also be a storage device independent of the aforementioned processor 1001 .

Those skilled in the art can understand that the terminal structure shown in FIG. 1 does not constitute a limitation on the terminal, and may include more or less components than the one shown, or combine some components, or arrange different components.

As shown in FIG. 1 , the memory 1004 as a computer storage medium may include a user interface module and a refrigerant leakage detection program.

In the terminal shown in FIG. 1 , the user interface 1003 is mainly used to connect the client (client), and perform data communication with the client; and the processor 1001 can be used to call the refrigerant leakage detection program stored in the memory 1004, and Do the following:

When the indoor fan of the air conditioner is running, acquiring the first concentration detected by the refrigerant sensor of the air conditioner;

When the first concentration is less than a preset concentration, a preset operation is performed to slow down the air flow in the space where the refrigerant sensor is located;

After performing the preset operation, obtain the second concentration detected by the refrigerant sensor;

Whether there is refrigerant leakage is determined according to the second concentration.

Further, the processor 1001 can call the refrigerant leakage detection program stored in the memory 1004, and also perform at least one of the following operations:

reduce the rotational speed of the indoor fan;

Turn off the fresh air function of the air conditioner.

Further, the processor 1001 can call the refrigerant leakage detection program stored in the memory 1004, and also perform the following operations:

obtaining a preset concentration range, wherein the minimum concentration value in the preset concentration range is greater than or equal to the preset concentration;

Determining whether the second concentration is within the preset concentration range, wherein, when the second concentration is within the preset concentration range, it is determined that there is refrigerant leakage, and when the second concentration is not within the preset concentration In the range, it is determined that there is no refrigerant leakage.

Further, the processor 1001 can call the refrigerant leakage detection program stored in the memory 1004, and also perform the following operations:

When the second concentration is not within the preset concentration range, outputting prompt information that the refrigerant sensor is abnormal.

Further, the processor 1001 can call the refrigerant leakage detection program stored in the memory 1004, and also perform the following operations:

When the first concentration is less than the preset concentration, start timing;

The preset operation is performed when the timing duration is greater than or equal to the first preset duration.

Further, the processor 1001 can call the refrigerant leakage detection program stored in the memory 1004, and also perform the following operations:

When the first concentration is greater than or equal to the preset concentration, it is determined that there is refrigerant leakage.

Further, the processor 1001 can call the refrigerant leakage detection program stored in the memory 1004, and also perform the following operations:

When the indoor fan is running, obtaining the continuous running time of the indoor fan;

Obtain the first concentration detected by the refrigerant sensor of the air conditioner when the continuous running duration of the indoor fan is greater than a second preset duration.

Further, the processor 1001 can call the refrigerant leakage detection program stored in the memory 1004, and also perform the following operations:

After the third preset duration of the preset operation is performed, the second concentration detected by the refrigerant sensor is acquired.

Further, the processor 1001 can call the refrigerant leakage detection program stored in the memory 1004, and also perform the following operations:

When the indoor fan is running, obtain the ambient temperature of the working space of the air conditioner;

When the temperature difference between the ambient temperature and the set temperature of the air conditioner is less than a preset difference value, the first concentration detected by the refrigerant sensor of the air conditioner is acquired.

Further, the processor 1001 can call the refrigerant leakage detection program stored in the memory 1004, and also perform the following operations:

When it is determined that there is refrigerant leakage, an alarm prompt message is output, and the rotational speed of the indoor fan is increased.

2, in one embodiment, the method for detecting refrigerant leakage includes the following steps:

Step S10, when the indoor fan of the air conditioner is running, obtain the first concentration detected by the refrigerant sensor of the air conditioner;

In this embodiment, the embodiment terminal is an air conditioner. The air conditioner is provided with a refrigerant sensor, which is used to detect the refrigerant in the nearby air and output the corresponding concentration.

Optionally, the refrigerant sensor can be arranged inside the air conditioner or outside the air conditioner. For example, the refrigerant sensor can be arranged in the air outlet or air duct of the air conditioner, or the refrigerant sensor can be arranged on the air outlet part of the air outlet. Sensors can also be installed in other locations in the air conditioner where refrigerant leakage is likely to occur. When the refrigerant sensor is installed at the air outlet, the refrigerant concentration detected by the refrigerant sensor is the refrigerant concentration blown from the inside of the air conditioner to the environment, and the leaked refrigerant can be fully mixed with the air and flow to the air outlet, so the refrigerant concentration at the air outlet The average concentration of the current refrigerant leaking inside the air conditioner can be more accurately reflected, so that the risk of refrigerant leakage can be accurately estimated according to the concentration data detected by the refrigerant sensor.

Optionally, the refrigerant sensor detects the refrigerant concentration in real time or periodically. When the concentration detected by the refrigerant sensor is greater than the preset concentration, it indicates that a refrigerant leak is currently occurring, and the concentration of the leaked refrigerant is relatively high. Therefore, an alarm message can be output to remind the user of refrigerant leakage.

Optionally, the application scenario of this embodiment is refrigerant leakage detection when the indoor fan is running, wherein the refrigerant sensor is arranged at a position where the air flow can be affected by the air output from the indoor fan. Therefore, when the indoor fan is running, the first concentration detected by the refrigerant sensor of the air conditioner is acquired.

Optionally, when the indoor fan is running, the continuous running time of the indoor fan is obtained, and when the continuous running time of the indoor fan is greater than the second preset time, the first concentration detected by the refrigerant sensor of the air conditioner is obtained. For the second preset time period, the air flow and the refrigerant concentration at the detection position where the refrigerant sensor is located tend to be stable, and the obtained first concentration is more accurate.

Optionally, in order to prevent the air conditioner from frequently performing preset operations and affecting the normal operation of the air conditioner, when the indoor fan is running, the ambient temperature of the working space of the air conditioner can be obtained, and the temperature difference between the ambient temperature and the set temperature of the air conditioner can be obtained. When the difference is less than the preset difference, it indicates that the air conditioner is about to or has already reached the temperature to stop, and executing the preset operation will not have a great impact on the normal function of the air conditioner. Therefore, the first concentration detected by the refrigerant sensor of the air conditioner can be obtained. and its subsequent steps.

Step S20, when the first concentration is less than a preset concentration, perform a preset operation to slow down the air flow in the space where the refrigerant sensor is located;

In this embodiment, when the first concentration is less than the preset concentration, it indicates that there may be a refrigerant leak at present, but the leaked refrigerant is less, or the leaked refrigerant is accelerated to diffuse under the action of the indoor fan, so that the refrigerant detected by the refrigerant sensor is detected. The concentration is low. Therefore, a preset operation can be performed to slow down the air flow in the space where the refrigerant sensor is located, and reduce the influence of the operation of the indoor fan on the concentration of the leaked refrigerant.

Optionally, the preset operation includes at least one of the following: reducing the rotational speed of the indoor fan, and by reducing the rotational speed of the indoor fan, slowing down the air flow at the detection position where the refrigerant sensor is located, wherein the refrigerant sensor is arranged in a position that can be affected by the outlet air of the indoor fan. The location where the air flows, for example, the refrigerant sensor can be installed in the air duct or the air outlet of the air conditioner, or, if the fresh air function of the air conditioner is turned on, the fresh air function of the air conditioner can be turned off, and the refrigerant sensor can be slowed down by stopping the fresh air blowing into the room. The air flow at the detection position, where the refrigerant sensor can be installed in a position where the air flow can be affected by the fresh air, for example, the refrigerant sensor can be installed in the fresh air duct or the fresh air outlet of the air conditioner, so as to stop blowing fresh air into the room by stopping , reduce the wind speed in the fresh air duct and at the fresh air outlet.

Optionally, the step of reducing the rotational speed of the indoor fan includes: turning off the indoor fan or switching the rotational speed of the indoor fan from a high-speed gear to a low-speed gear.

Optionally, when it is detected that the first concentration is less than the preset concentration, start timing, and when the timing duration is greater than or equal to the first preset duration, perform a preset operation, by setting the first preset duration, so that the refrigerant sensor The detected refrigerant concentration tends to be stable, and the judgment of possible refrigerant leakage is more accurate.

Optionally, when the first concentration is detected to be greater than or equal to the preset concentration, it indicates that a refrigerant leak is currently occurring, and the concentration of the leaked refrigerant is relatively high. Therefore, it is determined that there is a refrigerant leakage, and an alarm message is output to prompt the user that refrigerant leakage occurs.

Step S30, after performing the preset operation, obtain the second concentration detected by the refrigerant sensor;

In this embodiment, after the preset operation is performed, the air flow rate of the detection position where the refrigerant sensor is located becomes slower. Since refrigerant leakage is a continuous process, if there is a refrigerant leakage, after the preset operation is performed, the refrigerant sensor The detected refrigerant concentration will gradually increase and tend to be stable. Therefore, the second concentration detected by the refrigerant sensor may be obtained, so as to determine whether there is indeed a refrigerant leakage according to the second concentration.

Optionally, after performing the preset operation for a third preset time period, the second concentration detected by the refrigerant sensor is obtained, and by setting the third preset time period, the air flow and the refrigerant concentration at the detection position where the refrigerant sensor is located tend to be stable, The second concentration detected by the refrigerant sensor is more accurate.

In step S40, it is determined whether there is refrigerant leakage according to the second concentration.

In this embodiment, when judging whether there is refrigerant leakage according to the second concentration, it can be detected whether the second concentration is increased compared with the first concentration. The refrigerant leaks and the refrigerant sensor works normally. If the detected second concentration does not increase compared to the first concentration, it means that there is no refrigerant leakage, and the refrigerant sensor is working abnormally. The refrigerant concentration detected by the refrigerant sensor is due to the aging and performance degradation of the refrigerant sensor. Or caused by sensor drift, and can output prompt information about the abnormality of the refrigerant sensor.

Optionally, when detecting whether the second concentration is increased compared to the first concentration, the magnitudes of the second concentration and the first concentration can be directly compared, and when the second concentration is greater than the first concentration, it is determined that there is a second concentration compared with the first concentration. As the first concentration increases, there is refrigerant leakage. Optionally, since the refrigerant concentration at the detection position where the refrigerant sensor is located may fluctuate, when the second concentration is greater than the first concentration, the difference between the second concentration and the first concentration can be further obtained, and when the difference is greater than the predetermined concentration. When the difference value is set, it is determined that the second concentration is higher than the first concentration, and there is a refrigerant leakage.

Optionally, when judging whether there is refrigerant leakage according to the second concentration, the second concentration can be acquired in real time or periodically, and a change curve of the second concentration can be generated to determine whether there is refrigerant leakage according to the change curve. When it gradually increases, and then gradually increases, it is determined that there is a refrigerant leakage.

Optionally, when it is determined that there is refrigerant leakage, an alarm prompt message can be output to remind the user that there is refrigerant leakage, and the speed of the indoor fan can be increased. Security risks.

In the technical solution disclosed in this embodiment, when the indoor fan is running, a preset operation is performed to slow down the air flow in the space where the refrigerant sensor is located. Due to the influence of the concentration of the air conditioner, the detection of refrigerant leakage is more timely, and the safety of the refrigerant of the air conditioner is improved.

In another embodiment, as shown in FIG. 3 , on the basis of the embodiment shown in FIG. 2 above, step S40 includes:

Step S41, obtaining a preset concentration range, wherein the minimum concentration value in the preset concentration range is greater than or equal to the preset concentration;

In this embodiment, when detecting whether the second concentration increases compared to the first concentration, a preset concentration range can be obtained, so as to determine whether the second concentration increases according to the comparison between the preset concentration range and the second concentration. Wherein, the minimum concentration value in the preset concentration range is greater than or equal to the preset concentration, that is, the first concentration is not within the first concentration range, and the first concentration is smaller than any concentration in the preset concentration range.

Step S42, judging whether the second concentration is within the preset concentration range, wherein, when the second concentration is within the preset concentration range, it is determined that there is refrigerant leakage, and when the second concentration is not within the preset concentration range When the concentration range is preset, it is determined that there is no refrigerant leakage.

In this embodiment, it is judged whether the second concentration is within the preset concentration range, and if the judgment result is that the second concentration is within the preset concentration range, it indicates that the second concentration is higher than the first concentration, and the refrigerant sensor works normally , it is judged that there is refrigerant leakage. If the judgment result is that the second concentration is not within the preset concentration range, it indicates that the second concentration has not increased compared with the first concentration, the refrigerant sensor is working abnormally, and the refrigerant concentration detected by the refrigerant sensor may be Due to sensor aging and performance degradation, it is determined that there is no refrigerant leakage. Optionally, when the second concentration is not within the preset concentration range, prompt information that the refrigerant sensor is abnormal is output to prompt the user that the refrigerant sensor is faulty.

In the technical solution disclosed in this embodiment, by comparing the second concentration with the preset concentration range, it is possible to determine whether there is indeed refrigerant leakage when the indoor fan is running, thereby improving the safety of the refrigerant in the air conditioner and reducing the amount of refrigerant sensors. probability of false detection.

In yet another embodiment, as shown in FIG. 4 , on the basis of any of the embodiments shown in FIGS. 2 to 3 , the first purpose of this embodiment is to provide a method for detecting refrigerant leakage when the fan is running , By actively stopping the operation of the fan, and comparing the change of the concentration before and after the operation of the fan to determine whether leakage occurs, the ability of leakage detection and identification during the operation of the fan is improved, and the risk of leakage is reduced.

The second purpose of this embodiment is to provide an air conditioner with the leak detection method. Compared with the traditional air conditioner, the air conditioner has a higher leak detection and identification capability, can effectively identify leakage risks in more scenarios, and has higher security.

This embodiment is mainly aimed at the scenario: when the air conditioner is running and the fan is running, the detection concentration of the refrigerant sensor does not reach the leakage alarm concentration, and the concentration range lasts for a period of time. At this time, the air conditioner has a leakage safety hazard, but only the sensor alarms The function cannot effectively identify this risk.

As shown in Figure 4, this embodiment proposes a leak detection and identification method for this scenario:

1. When the air conditioner fan runs for more than T0 time, check the refrigerant concentration. The reason why the leakage judgment is started after the fan has been running for a period of time is because if there is an interfering substance, after the fan has been running for a period of time, the interfering substance will diffuse with the airflow, thereby avoiding false detection caused by the interfering substance;

2. If the concentration is in the interval 1 and the duration is longer than T1, there may be a risk of leakage at this time, and further identification is required. The concentration interval 1 is defined as the concentration range (a, b). In the actual situation, there may be leakage of the refrigerant in time. Due to the diffusion of the fan airflow, the concentration of the refrigerant detected by the sensor is still 0, so a is greater than or A number equal to 0, b is the alarm setting value of the refrigerant sensor, the unit is ppm, T1 is the time, the unit is s, and the duration is limited to a certain time T1, in order to prevent occasional fluctuations in the sensor reading caused by various situations; if at this time If the concentration is in the interval 2, it means that a relatively serious leakage has occurred. Concentration interval 2 is defined as the concentration range not less than the sensor alarm concentration.

3. The further identification process includes: the fan stops running and the duration is not less than T2, and then detects the refrigerant concentration. If the refrigerant concentration rises after stopping for a period of time and reaches the interval 2, it means that the air conditioner has refrigerant leakage at this time, due to the lack of fan airflow. Diffusion, refrigerant accumulation will cause the concentration to rise; if the refrigerant concentration does not change much after stopping operation for a period of time, and does not rise to interval 2, it means that there is no refrigerant leakage at this time, and the detected concentration may be due to sensor performance degradation/drift. .

In the technical solution disclosed in this embodiment, refrigerant leakage detection is realized when the fan is running.

In addition, an embodiment of the present invention also provides an air conditioner, the air conditioner includes: a memory, a processor, and a refrigerant leakage detection program stored on the memory and executable on the processor, the refrigerant leakage When the detection program is executed by the processor, the steps of the detection method for refrigerant leakage described in each of the above embodiments are implemented.

In addition, an embodiment of the present invention further provides a computer storage medium, where a program for detecting refrigerant leakage is stored on the computer storage medium, and when the program for detecting refrigerant leakage is executed by a processor, the refrigerant leakage described in each of the above embodiments is implemented. steps of the detection method.

It should be noted that, herein, the terms "comprising", "comprising" or any other variation thereof are intended to encompass non-exclusive inclusion, such that a process, method, article or system comprising a series of elements includes not only those elements, It also includes other elements not expressly listed or inherent to such a process, method, article or system. Without further limitation, an element qualified by the phrase "comprising a..." does not preclude the presence of additional identical elements in the process, method, article or system that includes the element.

The above-mentioned serial numbers of the embodiments of the present invention are only for description, and do not represent the advantages or disadvantages of the embodiments.

From the description of the above embodiments, those skilled in the art can clearly understand that the method of the above embodiment can be implemented by means of software plus a necessary general hardware platform, and of course can also be implemented by hardware, but in many cases the former is better implementation. Based on such understanding, the technical solutions of the present invention can be embodied in the form of software products in essence or the parts that make contributions to the prior art, and the computer software products are stored in a storage medium (such as ROM/RAM) as described above. , magnetic disk, optical disk), including several instructions to make a terminal device (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) execute the methods described in the various embodiments of the present invention.

The above are only preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields , are similarly included in the scope of patent protection of the present invention.

Claims (12)

1. A method for detecting refrigerant leakage is characterized by comprising the following steps:

when an indoor fan of an air conditioner runs, acquiring a first concentration detected by a refrigerant sensor of the air conditioner;

when the first concentration is smaller than the preset concentration, executing preset operation to slow down the air flow in the space where the refrigerant sensor is located;

after the preset operation is executed, acquiring a second concentration detected by the refrigerant sensor;

and judging whether refrigerant leakage exists according to the second concentration.

2. The method for detecting refrigerant leakage according to claim 1, wherein the predetermined operation comprises at least one of:

reducing the rotating speed of the indoor fan;

and closing the fresh air function of the air conditioner.

3. The method for detecting refrigerant leakage according to claim 1, wherein the step of determining whether there is refrigerant leakage according to the second concentration includes:

acquiring a preset concentration range, wherein the minimum concentration value in the preset concentration range is greater than or equal to the preset concentration;

and judging whether the second concentration is within the preset concentration range, wherein when the second concentration is within the preset concentration range, the refrigerant leakage is judged to exist, and when the second concentration is not within the preset concentration range, the refrigerant leakage is judged not to exist.

4. The method for detecting refrigerant leakage according to claim 3, wherein after the step of determining whether the second concentration is within the preset concentration range, the method further comprises:

and when the second concentration is not in the preset concentration range, outputting prompt information of abnormality of the refrigerant sensor.

5. The method for detecting refrigerant leakage according to claim 1, wherein the step of performing a predetermined operation when the first concentration is less than a first predetermined concentration comprises:

when the first concentration is smaller than the preset concentration, timing is started;

and when the timing duration is greater than or equal to a first preset duration, executing the preset operation.

6. The method for detecting refrigerant leakage according to claim 1, wherein after the step of obtaining the first concentration detected by the refrigerant sensor of the air conditioner, the method for detecting refrigerant leakage further comprises:

and judging that refrigerant leakage exists when the first concentration is greater than or equal to the preset concentration.

7. The method for detecting refrigerant leakage according to claim 1, wherein the step of acquiring the first concentration detected by the refrigerant sensor of the air conditioner while the indoor fan of the air conditioner is running comprises:

when the indoor fan runs, acquiring the continuous running time of the indoor fan;

and when the continuous operation time of the indoor fan is longer than a second preset time, acquiring a first concentration detected by a refrigerant sensor of the air conditioner.

8. The method for detecting refrigerant leakage according to claim 1, wherein the step of obtaining the second concentration detected by the refrigerant sensor after the predetermined operation is performed comprises:

and after a third preset time length of the preset operation is executed, acquiring a second concentration detected by the refrigerant sensor.

9. The method for detecting refrigerant leakage according to claim 1, wherein the step of acquiring the first concentration detected by the refrigerant sensor of the air conditioner while the indoor fan of the air conditioner is running comprises:

when the indoor fan runs, acquiring the ambient temperature of an action space of the air conditioner;

and when the temperature difference between the ambient temperature and the set temperature of the air conditioner is smaller than a preset difference value, acquiring a first concentration detected by a refrigerant sensor of the air conditioner.

10. The method of detecting refrigerant leakage according to any of claims 1 to 9, further comprising:

and when the refrigerant leakage is judged to exist, outputting alarm prompt information and increasing the rotating speed of the indoor fan.

11. An air conditioner, characterized in that the air conditioner comprises: a memory, a processor, and a detection program for refrigerant leakage stored in the memory and executable on the processor, wherein the detection program for refrigerant leakage realizes the steps of the method for detecting refrigerant leakage according to any one of claims 1 to 10 when executed by the processor.

12. A computer storage medium, wherein a refrigerant leakage detection program is stored on the computer storage medium, and the steps of the refrigerant leakage detection method according to any one of claims 1 to 10 are implemented when the refrigerant leakage detection program is executed by a processor.

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