A method, device and storage medium for detecting refrigerant content of air conditioner

Abstract

The present invention provides a method, device and storage medium for detecting the refrigerant content of an air conditioner, the method comprising: determining a target operating parameter of the air conditioner, the target operating parameter being the operating parameter of the air conditioner when the target refrigerant content is stored; obtaining the current operating parameter of the air conditioner; and obtaining the current refrigerant content of the air conditioner according to the target operating parameter and the current operating parameter. The technical problem that the prior art cannot accurately calculate the refrigerant content of the air conditioner is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning equipment, and in particular to a method, equipment and storage medium for detecting the refrigerant content of an air conditioner. Background Art

[0002] In the hot summer, air conditioning has become an indispensable part of our lives. However, after a few years of use, air conditioning often leaks refrigerant due to various reasons, resulting in poor cooling effect.

[0003] At present, the air conditioner lack of fluorine logic on the market will only remind you of lack of fluorine when the amount of refrigerant missing is greater than 40%-50% of the total filling amount. In this case, the cooling effect will be significantly worse, greatly reducing the comfort of consumers. In addition, after the lack of fluorine reminder, after-sales service often discharges all the remaining refrigerant in the compressor first and then refills the corresponding weight of refrigerant. This method will not only increase the user's after-sales maintenance costs, but also emit greenhouse gases after the refrigerant evaporates, which increases carbon emissions.

[0004] The present invention is proposed because the prior art cannot accurately calculate the content of air-conditioning refrigerant. Summary of the invention

[0005] The purpose of the present invention is to overcome the above-mentioned technical deficiencies and provide a method, device and storage medium for detecting the refrigerant content of an air conditioner, so as to at least solve the technical problem that the prior art cannot accurately calculate the content of the air conditioner refrigerant.

[0006] According to a first aspect of the present invention, there is provided a method for detecting the refrigerant content of an air conditioner, comprising: determining target operating parameters of the air conditioner, the target operating parameters being the operating parameters of the air conditioner when storing a refrigerant with a target content; obtaining current operating parameters of the air conditioner; and obtaining the current refrigerant content of the air conditioner based on the target operating parameters and the current operating parameters.

[0007] Further, determining the target operating parameters of the air conditioner includes: determining the target operating parameters when the external ambient temperature of the air conditioner is the target temperature; obtaining the current operating parameters of the air conditioner includes: obtaining the current operating parameters when the external ambient temperature of the air conditioner is the target temperature.

[0008] Furthermore, the target operating parameters include target power, and the current operating parameters include current power; obtaining the current refrigerant content of the air conditioner based on the target operating parameters and the current operating parameters includes: calculating the current refrigerant content based on the target power, the current power and the target content.

[0009] Further, the calculating the current refrigerant content according to the target power, the current power and the target content includes: determining a damping compensation coefficient; calculating the current refrigerant content according to the target power, the current power, the target content and the damping compensation coefficient.

[0010] Furthermore, the target operating parameters also include a target air outlet temperature of the indoor unit of the air conditioner, and the current operating parameters include a current air outlet temperature of the indoor unit of the air conditioner; and determining the damping compensation coefficient includes: calculating the damping compensation coefficient based on the target air outlet temperature and the current air outlet temperature.

[0011] Furthermore, the target operating parameters also include a target compressor frequency, and the current operating parameters also include a current compressor frequency; determining the damping compensation coefficient includes: obtaining a deviation value between the current compressor frequency and the target compressor frequency; and determining the damping compensation coefficient when the deviation value exceeds a preset deviation threshold.

[0012] Further, the target operating parameters include a target compressor exhaust temperature, and the current operating parameters include a current compressor exhaust temperature. The current compressor frequency is obtained in the following manner: when a preset condition is not satisfied between the target compressor exhaust temperature and the current compressor exhaust temperature, the compressor frequency of the air conditioner is adjusted until the preset condition is satisfied between the target compressor exhaust temperature and the corresponding compressor exhaust temperature after adjusting the compressor frequency, and the compressor frequency obtained after adjustment is obtained as the current compressor frequency.

[0013] Furthermore, the preset condition is that the difference between the target compressor exhaust temperature and the current compressor exhaust temperature satisfies a preset difference range.

[0014] Further, the current refrigerant content is calculated according to the target power, the current power, the target content and the damping compensation coefficient, including:

[0015] The current refrigerant content is calculated by the following formula:

[0016]

[0017] Among them, M x represents the current refrigerant content, ε represents the damping compensation coefficient, P x Represents the current power, P m represents the target power, and M0 represents the target content.

[0018] Further, the target operating parameter also includes a target compressor frequency, and the current operating parameter also includes a current compressor frequency; the calculating the current refrigerant content according to the target power, the current power and the target content includes: obtaining a deviation value between the current compressor frequency and the target compressor frequency; and when the deviation value does not exceed a preset deviation threshold, calculating the current refrigerant content by the following formula:

[0019]

[0020] Among them, M x Indicates the current refrigerant content, P x Represents the current power, P m represents the target power, and M0 represents the target content.

[0021] Furthermore, the current power is obtained in the following manner:

[0022] Obtain multiple current values ​​and corresponding multiple voltage values ​​within a specified time period related to the current time;

[0023] The current power is calculated according to the multiple current values ​​and the multiple voltage values.

[0024] According to a second aspect of the present invention, there is provided an electronic device, comprising a memory and a processor, wherein the memory stores computer instructions, and when the computer instructions are executed by the processor, any one of the above methods is executed.

[0025] According to a third aspect of the present invention, there is provided a non-transitory computer-readable storage medium having a computer program stored thereon, wherein when the computer program is executed by a processor, the computer program causes any one of the above methods to be performed.

[0026] The present invention provides a method, device and storage medium for detecting the refrigerant content of an air conditioner, the method comprising: determining a target operating parameter of the air conditioner, the target operating parameter being the operating parameter of the air conditioner when the target refrigerant content is stored; obtaining the current operating parameter of the air conditioner; and obtaining the current refrigerant content of the air conditioner according to the target operating parameter and the current operating parameter. The method solves the technical problem that the prior art cannot accurately calculate the refrigerant content of the air conditioner. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a flow chart of a method for detecting the refrigerant content of an air conditioner provided by an embodiment of the present invention;

[0028] Figure 2It is a flow chart of an optional method for detecting the refrigerant content of an air conditioner provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0030] The present application provides a method for detecting the refrigerant content of an air conditioner, such as Figure 1 As shown, the method includes:

[0031] Step S11, determining target operating parameters of the air conditioner, where the target operating parameters are operating parameters of the air conditioner when a target content of refrigerant is stored.

[0032] Specifically, the target content may be the saturated content of the refrigerant (such as fluorine) when the air conditioner leaves the factory, and the target operating parameters may be the operating parameters of the air conditioner when it operates under the condition of saturated fluorine content.

[0033] Step S13, obtaining the current operating parameters of the air conditioner.

[0034] Specifically, the above current operating parameters are the operating parameters of the air conditioner when the user actually uses the air conditioner after the air conditioner leaves the factory.

[0035] Step S15, obtaining the current refrigerant content of the air conditioner according to the target operating parameters and the current operating parameters.

[0036] Specifically, the above working parameters may be compressor frequency, input current, input voltage, compressor exhaust temperature, and indoor unit air outlet temperature. This solution can compare the air conditioner working parameters when the user uses the air conditioner with the factory data, and integrate the parameters actually detected by the user to accurately calculate the compressor fluorine deficiency. This solves the technical problem that the air conditioner refrigerant content cannot be accurately obtained in the prior art.

[0037] Optionally, step S11, determining the target operating parameters of the air conditioner includes:

[0038] Step S111, when the ambient temperature outside the air conditioner is the target temperature, determine the target operating parameters.

[0039] Specifically, the target temperature can be 35°C when the ambient temperature of the outdoor unit is 35°C. Optionally, when the ambient temperature of the air conditioner outdoor unit is 35°C and the startup temperature is 16°C for cooling, after the air conditioner runs for 10 minutes, this solution collects the target working parameters.

[0040] Step S13, obtaining the current operating parameters of the air conditioner, including:

[0041] Step S131, when the external environment temperature of the air conditioner is the target temperature, obtain the current working parameters.

[0042] Specifically, when the user uses the air conditioner after it leaves the factory, if it detects that the ambient temperature outside the air conditioner is 35±1°C, the air conditioner will be forced to enter the fluorine deficiency self-check mode when it is turned on, and the power-on temperature will be automatically set to 16°C. After running for 10 minutes, the current working parameters of the air conditioner will be obtained.

[0043] Optionally, the target operating parameter includes the target power, and the current operating parameter includes the current power; according to the target operating parameter and the current operating parameter, step S15 acquires the current refrigerant content of the air conditioner including:

[0044] Step S151, calculating the current refrigerant content according to the target power, the current power and the target content.

[0045] Specifically, this solution can calculate the current refrigerant content according to the target power of the air conditioner when it leaves the factory, the current power of the air conditioner when the user uses it, and the refrigerant content of the air conditioner when it leaves the factory.

[0046] Optionally, step S151 calculates the current refrigerant content according to the target power, the current power and the target content, including:

[0047] Step S1511, determining the damping compensation coefficient.

[0048] Step S1512, calculating the current refrigerant content according to the target power, the current power, the target content and the damping compensation coefficient.

[0049] Specifically, the user's indoor ambient temperature is not a constant temperature. The indoor temperature will slowly decrease after the air conditioner is turned on. At this time, the load of the whole machine will decrease, and the calculated refrigerant weight needs to be compensated. This solution can first determine the damping compensation coefficient, and then calculate the current refrigerant content based on the target power, current power, target content and damping compensation coefficient.

[0050] Optionally, the target operating parameter also includes a target air outlet temperature of the indoor unit of the air conditioner, and the current operating parameter includes a current air outlet temperature of the indoor unit of the air conditioner; step S1511 determines the damping compensation coefficient including:

[0051] Step S15111, calculating the damping compensation coefficient according to the target air outlet temperature and the current air outlet temperature.

[0052] Specifically, in this solution, the damping compensation coefficient ξ = T1' / T1 can be obtained by dividing the currently sampled temperature T1' at the air outlet of the indoor unit by the temperature T1 at the air outlet tested before leaving the factory.

[0053] Optionally, the target operating parameter further includes the target compressor frequency, and the current operating parameter further includes the current compressor frequency; determining the damping compensation coefficient includes:

[0054] Obtaining the deviation value between the current compressor frequency F1 and the target compressor frequency F0;

[0055] When the deviation value exceeds the preset deviation threshold, determining the damping compensation coefficient.

[0056] Specifically, the absolute value of the difference between the frequency F1 of the current compressor and the compressor frequency F0 recorded at this exhaust when leaving the factory is δ = |F1 - F0|. When δ ≥ K (K is the frequency error coefficient), it is necessary to compensate the calculated refrigerant weight.

[0057] It should be noted here that if δ < K, there is no need to determine the damping compensation coefficient.

[0058] Optionally, the target operating parameter includes the target compressor exhaust temperature, and the current operating parameter includes the current compressor exhaust temperature. The current compressor frequency is obtained by the following method:

[0059] When the preset condition is not satisfied between the target compressor exhaust temperature and the current compressor exhaust temperature, adjust the compressor frequency of the air conditioner until the preset condition is satisfied between the target compressor exhaust temperature and the compressor exhaust temperature corresponding to the adjusted compressor frequency, and obtain the adjusted compressor frequency as the current compressor frequency.

[0060] Optionally, the preset condition is that the difference between the target compressor exhaust temperature and the current compressor exhaust temperature satisfies the preset difference range.

[0061] Specifically, first, compare the current compressor exhaust temperature T0 with the target compressor exhaust temperature T2 recorded before leaving the factory. If T2 = T0 ± g% and F0' = F0 ± j% (g% and j% are the corresponding errors), it indicates that the refrigerant in the compressor is sufficient and there is no lack of refrigerant phenomenon at this time; if T2 > T0 ± g%, the MCU gives a compressor drive signal at this time to reduce the compressor frequency; if T2 < T0 ± g%, the MCU gives a compressor drive signal at this time to increase the compressor frequency. Adjust the compressor frequency in this way until the compressor exhaust temperature T2 = T0 ± g%, and then read the compressor frequency F1, the temperature T1' at the air outlet of the indoor unit, and the sampled values of the input voltage VN and input current IN at each moment (N is the number of samples within 10 minutes).

[0062] Optionally, the current refrigerant content is calculated according to the target power, the current power, the target content and the damping compensation coefficient, including:

[0063] The current refrigerant content is calculated using the following formula:

[0064]

[0065] Among them, M x Indicates the current refrigerant content, ε indicates the damping compensation coefficient, P x Indicates the current power, P m represents the target power, and M0 represents the target content.

[0066] Optionally, the target operating parameter also includes a target compressor frequency, and the current operating parameter also includes a current compressor frequency; the current refrigerant content calculated according to the target power, the current power and the target content includes:

[0067] Obtain the deviation value between the current compressor frequency and the target compressor frequency;

[0068] When the deviation value does not exceed the preset deviation threshold, the current refrigerant content is calculated by the following formula:

[0069]

[0070] Among them, M x Indicates the current refrigerant content, P x Indicates the current power, P m represents the target power, and M0 represents the target content.

[0071] Specifically, if δ<K, no compensation is required, and the calculated refrigerant weight is

[0072] Optionally, obtain the current power in the following ways:

[0073] Obtain multiple current values ​​and corresponding multiple voltage values ​​within a specified time period related to the current time;

[0074] The current power is calculated based on the multiple current values ​​and the multiple voltage values.

[0075] Specifically, since the user's power grid may be affected by the surrounding environment and cause voltage or current distortion, the calculated refrigerant weight is not accurate, so further correction is required. First, perform voltage and current correction. Within 10 minutes of operation, sample the input voltage and current N times, and perform root mean square calculation on the sampled voltage and current to obtain the corrected voltage: Similarly, the corrected current At this time, the corrected power is P X = U X × I X .

[0076] Optionally, the finally calculated refrigerant weight is compared with the initial refrigerant weight M0 of the outdoor unit. When M X ≤ 0.8M0, the user is reminded that the air conditioner lacks refrigerant, and the lack of refrigerant is δ' = M0 - M X . Through the idea of the present invention, the specific lack of refrigerant can be calculated more accurately.

[0077] Next, in combination with Figure 2 , an optional embodiment of this solution is introduced:

[0078] Before the air conditioner leaves the factory, the compressor refrigerant is sufficient at this time, with a mass of M0. When the outdoor unit ambient temperature is 35°C, turn on the machine for cooling at 16°C. After running for 10 minutes, record the outdoor unit compressor exhaust temperature T0, compressor frequency F0, indoor unit air outlet temperature T1, and outdoor unit input current Im and input voltage Vm at this time.

[0079] When the user uses it, when it is detected that the outdoor unit ambient temperature is 35 ± 1°C at this time, when turning on the machine, it first forcibly enters the lack of refrigerant self-check mode. First, automatically set the machine to turn on at 16°C. After running for 10 minutes, record the outdoor unit compressor exhaust temperature T2 and compressor frequency F0' at this time. First, judge the comparison between the compressor exhaust temperature T0 at this time and the exhaust temperature T2 recorded before leaving the factory. If T2 = T0 ± g% and F0' = F0 ± j% (g% and j% are the corresponding errors), it means that the compressor refrigerant is sufficient at this time and there is no lack of refrigerant; if T2 > T0 ± g%, at this time the MCU gives a compressor drive signal to reduce the compressor frequency; if T2 < T0 ± g%, at this time the MCU gives a compressor drive signal to increase the compressor frequency. Adjust the compressor frequency in this way until the compressor exhaust temperature T2 = T0 ± g%, and then read the compressor frequency F1, indoor unit air outlet temperature T1' and the sampling values of the input voltage VN and input current IN at each moment (N is the number of samples within 10 minutes).

[0080] Since the user's power grid may be affected by the surrounding environment, resulting in voltage or current distortion, the refrigerant weight calculated at this time is not accurate, so further correction is required. First, perform voltage and current correction. Within 10 minutes of operation, sample the input voltage and current N times, and calculate the root mean square of the sampled voltage and current to obtain the corrected voltage as Similarly, the corrected current At this time, the corrected power is P X = U X × I X. Secondly, the user's indoor ambient temperature is not a constant temperature. The indoor temperature will slowly decrease after the air conditioner is turned on. At this time, the load of the whole machine will decrease. The absolute value of the compressor frequency F1 after adjusting the exhaust gas to be equal and the compressor frequency F0 recorded under the exhaust gas at the factory is δ=|F1-F0|. When δ≥K (K is the frequency error coefficient), the calculated refrigerant weight needs to be compensated. By dividing the current indoor unit outlet temperature sampled by the outlet temperature tested before leaving the factory, the damping compensation coefficient ξ=T1' / T1 is obtained. The final calculated refrigerant weight is If δ<K, no compensation is required, and the calculated refrigerant weight is

[0081] In summary, this solution integrates the parameters detected during actual user use by comparing the compressor frequency, input current, input voltage, compressor exhaust temperature, and indoor unit outlet temperature during user use with the data at the factory, and accurately calculates the amount of fluorine deficiency in the compressor.

[0082] The present invention also provides an electronic device, comprising: a processor and a memory; the memory stores a computer-readable program that can be executed by the processor; when the processor executes the computer-readable program, the steps in any of the above control methods are implemented.

[0083] The present invention also provides a computer-readable storage medium, which stores one or more programs. The one or more programs can be executed by one or more processors to implement the steps in any of the above control methods.

[0084] Of course, those skilled in the art can understand that all or part of the processes in the above-mentioned embodiments can be implemented by instructing related hardware (such as a processor, a controller, etc.) through a computer program, and the program can be stored in a computer-readable storage medium, and the program can include the processes of the above-mentioned method embodiments when executed. The storage medium can be a memory, a disk, an optical disk, etc.

[0085] The specific implementation of the present invention described above does not constitute a limitation on the protection scope of the present invention. Any other corresponding changes and modifications made based on the technical concept of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A method for detecting the refrigerant content of an air conditioner, characterized in that: include: Determining a target operating parameter of the air conditioner, wherein the target operating parameter is an operating parameter of the air conditioner when a target content of refrigerant is stored; Acquiring current operating parameters of the air conditioner; Acquiring a current refrigerant content of the air conditioner according to the target operating parameter and the current operating parameter; The target operating parameter includes a target power, and the current operating parameter includes a current power; The obtaining the current refrigerant content of the air conditioner according to the target operating parameter and the current operating parameter comprises: Calculating the current refrigerant content according to the target power, the current power and the target content; The target operating parameters include the target compressor exhaust temperature, and the current operating parameters include the current compressor exhaust temperature: When the external ambient temperature of the air conditioner is the target temperature, and when the target compressor exhaust temperature and the current compressor exhaust temperature do not satisfy a preset condition, the compressor frequency of the air conditioner is adjusted until the target compressor exhaust temperature and the corresponding compressor exhaust temperature after adjusting the compressor frequency satisfy the preset condition, thereby obtaining the current power.

2. The method according to claim 1, characterized in that Determining the target operating parameters of the air conditioner includes: When the ambient temperature of the external unit of the air conditioner is the target temperature, determining the target operating parameter; The obtaining of the current operating parameters of the air conditioner comprises: When the external environment temperature of the air conditioner is the target temperature, the current operating parameter is obtained.

3. The method according to claim 1, characterized in that The calculating the current refrigerant content according to the target power, the current power and the target content includes: Determine the damping compensation coefficient; The current refrigerant content is calculated according to the target power, the current power, the target content and the damping compensation coefficient.

4. The method according to claim 3, characterized in that The target operating parameters also include the target air outlet temperature of the indoor unit of the air conditioner, and the current operating parameters include the current air outlet temperature of the indoor unit of the air conditioner; Determining the damping compensation coefficient includes: The damping compensation coefficient is calculated according to the target air outlet temperature and the current air outlet temperature.

5. The method according to claim 3, characterized in that: The target operating parameters also include a target compressor frequency, and the current operating parameters also include a current compressor frequency; Determining the damping compensation coefficient includes: Acquire a deviation value between the current compressor frequency and the target compressor frequency; When the deviation value exceeds a preset deviation threshold, the damping compensation coefficient is determined.

6. The method according to claim 5, characterized in that The target operating parameter includes the target compressor exhaust temperature, the current operating parameter includes the current compressor exhaust temperature, and the current compressor frequency is obtained by: When the preset condition is not satisfied between the target compressor exhaust temperature and the current compressor exhaust temperature, the compressor frequency of the air conditioner is adjusted until the preset condition is satisfied between the target compressor exhaust temperature and the corresponding compressor exhaust temperature after adjusting the compressor frequency, and the adjusted compressor frequency is obtained as the current compressor frequency.

7. The method according to claim 6, characterized in that The preset condition is that the difference between the target compressor exhaust temperature and the current compressor exhaust temperature satisfies a preset difference range.

8. The method according to claim 3, characterized in that The calculating the current refrigerant content according to the target power, the current power, the target content and the damping compensation coefficient includes: The current refrigerant content is calculated by the following formula: Among them, M x represents the current refrigerant content, ε represents the damping compensation coefficient, P x Represents the current power, P m represents the target power, and M0 represents the target content.

9. The method according to claim 1, characterized in that: The target operating parameter also includes a target compressor frequency, and the current operating parameter also includes a current compressor frequency; the current refrigerant content is calculated according to the target power, the current power and the target content, and includes: Acquire a deviation value between the current compressor frequency and the target compressor frequency; When the deviation value does not exceed the preset deviation threshold, the current refrigerant content is calculated by the following formula: Among them, M x Indicates the current refrigerant content, P x Represents the current power, P m represents the target power, and M0 represents the target content.

10. The method according to claim 1, characterized in that The current power is obtained by: Obtain multiple current values ​​and corresponding multiple voltage values ​​within a specified time period related to the current time; The current power is calculated according to the multiple current values ​​and the multiple voltage values.

11. An electronic device comprising a memory and a processor, wherein the memory stores computer instructions, characterized in that: The computer instructions, when executed by the processor, cause the method of any one of claims 1 to 10 to be performed.

12. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that: The computer program, when executed by a processor, causes the method of any one of claims 1 to 10 to be performed.

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