Air conditioner, its control method, and computer-readable storage medium

Abstract

The present invention discloses a control method for an air conditioner, the method comprising: during the startup phase of the compressor of the air conditioner, detecting a vibration characteristic value of the refrigerant circulation circuit of the air conditioner; the startup phase being the phase before the compressor is started and raised to the target frequency; determining the frequency increase rate of the compressor according to the vibration characteristic value; and controlling the compressor to increase its frequency and operate according to the frequency increase rate. The present invention also discloses an air conditioner and a computer-readable storage medium. The present invention aims to improve the accuracy of regulating the frequency increase rate during the startup process of the compressor, so as to improve the stability and reliability of the refrigerant circulation system during the startup phase of the compressor.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioners, and particularly to a control method for an air conditioner, an air conditioner, and a computer-readable storage medium. Background Art

[0002] With the development of economy and technology, air conditioners are more and more widely used, and users have higher and higher requirements for the performance of air conditioners. At present, when an air conditioner is turned on, the outdoor compressor starts and runs at an increasing frequency. During the process of the compressor increasing its frequency, it generally runs at a preset fixed frequency increase rate, which completely ignores the actual situation during the process of the compressor increasing its frequency, and it is easy to have problems with the stability or reliability of the refrigerant circulation system due to inaccurate frequency increase rate. Summary of the Invention

[0003] The main purpose of the present invention is to provide a control method for an air conditioner, an air conditioner, and a computer-readable storage medium, aiming to improve the accuracy of regulating the frequency increase rate during the startup process of the compressor, so as to improve the stability and reliability of the refrigerant circulation system during the startup stage of the compressor.

[0004] To achieve the above object, the present invention provides a control method for an air conditioner, and the control method for the air conditioner includes the following steps:

[0005] During the startup stage of the compressor of the air conditioner, detect the vibration characteristic value of the refrigerant circulation loop of the air conditioner; the startup stage is the stage before the compressor is started and then increased to the target frequency;

[0006] Determine the frequency increase rate of the compressor according to the vibration characteristic value;

[0007] Control the compressor to increase its frequency and run according to the frequency increase rate.

[0008] Optionally, the step of determining the frequency increase rate of the compressor according to the vibration characteristic value includes:

[0009] When the vibration characteristic value is less than the vibration characteristic threshold, determine the first frequency increase rate as the frequency increase rate;

[0010] When the vibration characteristic value is greater than or equal to the vibration characteristic threshold, determine the second frequency increase rate as the frequency increase rate;

[0011] The first frequency increase rate is greater than the second frequency increase rate.

[0012] Optionally, before the step of determining the frequency increase rate of the compressor according to the vibration characteristic value, it further includes:

[0013] Obtain the current operating frequency of the compressor;

[0014] Determine the vibration characteristic threshold according to the operating frequency;

[0015] The vibration characteristic threshold decreases as the operating frequency increases.

[0016] Optionally, the step of determining the vibration characteristic threshold according to the operating frequency includes:

[0017] Determine the frequency range in which the operating frequency is located;

[0018] Determine the vibration characteristic threshold according to the frequency range;

[0019] Wherein, the larger the frequency in the frequency range, the smaller the vibration characteristic threshold.

[0020] Optionally, the step of determining the frequency increase rate of the compressor according to the vibration characteristic value includes:

[0021] Obtain the target correspondence between the vibration characteristic value and the frequency increase rate according to the current operating frequency of the compressor;

[0022] Based on the target correspondence, determine the frequency increase rate corresponding to the vibration characteristic value;

[0023] Wherein, the frequency increase rate corresponding to the vibration characteristic value in the target correspondence decreases as the operating frequency increases.

[0024] Optionally, the step of obtaining the target correspondence between the vibration characteristic value and the frequency increase rate according to the current operating frequency of the compressor includes:

[0025] Determine the frequency range in which the operating frequency is located;

[0026] Obtain the target correspondence according to the frequency range;

[0027] Wherein, the larger the frequency in the frequency range, the smaller the frequency increase rate corresponding to the vibration characteristic value in the target correspondence.

[0028] Optionally, the step of detecting the vibration characteristic value of the refrigerant circulation circuit of the air conditioner includes:

[0029] Detect the vibration acceleration and / or vibration amplitude of the target component, the vibration characteristic value includes the vibration acceleration and / or the vibration amplitude, and the target component includes the compressor and / or the refrigerant pipeline.

[0030] Optionally, after the step of controlling the compressor to increase the frequency according to the frequency increase rate, the following is further included:

[0031] During the process of increasing the frequency of the compressor, if the operating frequency of the compressor reaches the first frequency, control the compressor to maintain operation at the first frequency;

[0032] When the compressor maintains operation at the first frequency until the set conditions for the stable operation of the air conditioner are met, obtain the second frequency as the first frequency and return to execute the step of detecting the vibration characteristic value of the refrigerant circulation circuit of the air conditioner during the startup stage of the compressor of the air conditioner until the operating frequency of the compressor reaches the target frequency;

[0033] Wherein, the first frequency is less than the second frequency, and the second frequency is less than or equal to the target frequency.

[0034] In addition, to achieve the above object, the present application also proposes an air conditioner, which includes:

[0035] A compressor;

[0036] A vibration sensor for detecting the vibration characteristic value of the refrigerant circulation circuit of the air conditioner;

[0037] A control device, the compressor and the vibration sensor are both connected to the control device, the control device includes: a memory, a processor, and a control program of the air conditioner stored on the memory and operable on the processor, and when the control program of the air conditioner is executed by the processor, it realizes the steps of the control method of the air conditioner described in any one of the above.

[0038] In addition, to achieve the above object, the present application also proposes a computer-readable storage medium, on which a control program of the air conditioner is stored, and when the control program of the air conditioner is executed by a processor, it realizes the steps of the control method of the air conditioner described in any one of the above.

[0039] A control method for an air conditioner proposed by the present invention, in the startup stage after the compressor starts up and before it is increased to the target frequency, based on the detected vibration characteristic value of the target component in the refrigerant circulation circuit, determine the frequency increase rate of the compressor, and control the compressor to increase its frequency according to the determined frequency increase rate. During this process, the frequency increase rate of the compressor is no longer a preset fixed rate, but is determined according to the actual vibration situation in the refrigerant circulation circuit of the air conditioner. The vibration characteristic value can accurately characterize the stability of the refrigerant circulation circuit in the startup stage. Based on this, it can ensure that the frequency increase rate of the compressor matches the stable situation of the refrigerant circulation system, improve the accuracy of the frequency increase rate regulation during the startup process of the compressor, avoid the occurrence of stability problems and reliability problems of the air conditioner, and improve the stability and reliability of the refrigerant circulation system during the startup stage of the compressor. Description of the Drawings

[0040] Figure 1 Schematic diagram of the hardware structure involved in the operation of an embodiment of the air conditioner according to the present invention;

[0041] Figure 2 Schematic flow chart of an embodiment of the control method of the air conditioner according to the present invention;

[0042] Figure 3 Schematic flow chart of another embodiment of the control method of the air conditioner according to the present invention;

[0043] Figure 4 Schematic flow chart of still another embodiment of the control method of the air conditioner according to the present invention;

[0044] Figure 5 Schematic flow chart of yet another embodiment of the control method of the air conditioner according to the present invention.

[0045] The realization of the object of the present invention, functional features and advantages will be further described with reference to the embodiments and the accompanying drawings. Detailed implementation manners

[0046] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0047] The main solution of the embodiment of the present invention is: during the startup stage of the compressor of the air conditioner, detect the vibration characteristic value of the refrigerant circulation loop of the air conditioner; the startup stage is the stage before the compressor is started and raised to the target frequency; determine the frequency increase rate of the compressor according to the vibration characteristic value; control the compressor to increase the frequency and operate according to the frequency increase rate

[0048] In the prior art, when the air conditioner is turned on, the outdoor compressor starts and increases the frequency and operates. During the process of the compressor increasing the frequency, it generally operates at a preset fixed frequency increase rate, which completely ignores the actual situation during the process of the compressor increasing the frequency, and it is easy to have problems with the stability or reliability of the refrigerant circulation system due to inaccurate frequency increase rate.

[0049] The present invention provides the above solution, aiming to improve the accuracy of the frequency increase rate regulation during the startup process of the compressor, so as to improve the stability and reliability of the refrigerant circulation system during the startup stage of the compressor.

[0050] The embodiment of the present invention proposes an air conditioner.

[0051] In the embodiment of the present invention, the air conditioner includes a compressor 1, a vibration sensor 2 and a control device. Both the compressor 1 and the vibration sensor 2 are connected to the control device. The control device can be used to control the operation of the compressor 1 and can also be used to obtain the data detected by the vibration sensor 2.

[0052] Among them, the vibration sensor 2 is arranged on the refrigerant circulation loop of the air conditioner to detect the vibration characteristic value of the refrigerant circulation loop. Specifically, the refrigerant circulation loop includes a compressor 1, a first heat exchanger, a throttling device, a second heat exchanger, and refrigerant pipelines connecting the above components. The vibration sensor 2 can be arranged on the compressor 1 or on the refrigerant pipeline.

[0053] In the embodiment of the present invention, referring to Figure 1 , the control device of the air conditioner includes: a processor 1001 (such as a CPU), a memory 1002, a timer 1003, etc. The memory 1002 can be a high-speed RAM memory or a stable memory (non-volatile memory), such as a disk memory. Optionally, the memory 1002 can also be a storage device independent of the aforementioned processor 1001.

[0054] Those skilled in the art can understand that Figure 1 the device structure shown in

[0055] does not constitute a limitation on the device, and may include more or fewer components than shown in the figure, or combine some components, or arrange different components. Figure 1 As shown in Figure 1 , the memory 1002, as a computer-readable storage medium, may include a control program for the air conditioner. In the device shown in

[0056] the processor 1001 can be used to call the control program for the air conditioner stored in the memory 1002 and execute the relevant step operations of the control method for the air conditioner in the following embodiments.

[0057] Referring to Figure 2 , an embodiment of the control method for the air conditioner of the present application is proposed. In this embodiment, the control method for the air conditioner includes:

[0058] Step S10, during the startup stage of the compressor of the air conditioner, detect the vibration characteristic value of the refrigerant circulation loop of the air conditioner;

[0059] In this embodiment, the startup stage of the compressor is the stage before the compressor is started and then increased to the target frequency.

[0060] Here, the vibration characteristic value is specifically detected by a vibration sensor provided on the refrigerant circulation circuit. The vibration sensor can be provided on components such as a compressor or a refrigerant pipeline on the refrigerant circulation circuit. In this embodiment, in order to accurately reflect the operating stability of the refrigerant circulation circuit, the vibration acceleration and / or vibration amplitude of the detected target component are detected. The vibration characteristic value includes the vibration acceleration and / or the vibration amplitude, and the target component includes the compressor and / or the refrigerant pipeline. Specifically, the vibration acceleration and / or vibration amplitude of the compressor can be used as the vibration characteristic value here; the vibration acceleration and / or vibration amplitude of the refrigerant pipeline can also be used as the vibration characteristic value here; the vibration acceleration and / or vibration amplitude of both the compressor and the refrigerant pipeline can also be used as the vibration characteristic value here.

[0061] Step S20, determine the frequency increase rate of the compressor according to the vibration characteristic value;

[0062] In this embodiment, the frequency increase rate specifically refers to the target value of the frequency amplitude that needs to be increased per unit time during the frequency increase process of the compressor. In other embodiments, the frequency increase rate can also be the maximum value of the frequency amplitude that is allowed to be increased per unit time during the frequency increase process of the compressor.

[0063] Different vibration characteristic values correspond to different frequency increase rates. Specifically, the frequency increase rate decreases as the vibration characteristic value increases; conversely, the frequency increase rate increases as the vibration characteristic value decreases.

[0064] Specifically, a mapping relationship between the vibration characteristic value and the frequency increase rate can be established in advance. Based on this mapping relationship, the rate matching the current vibration characteristic value can be determined as the frequency increase rate. For example, different numerical intervals where the vibration characteristic value is located can correspond to different frequency increase rates. The frequency increase rate corresponding to the numerical interval increases as the vibration characteristic value in the numerical interval increases. Based on this, the numerical interval where the vibration characteristic value is located is determined, and the frequency increase rate corresponding to the numerical interval is obtained as the frequency increase rate here. Or, a calculation formula between the vibration characteristic value and the frequency increase rate can be established in advance. Based on this calculation formula, the result calculated by the current vibration characteristic value can be used as the frequency increase rate.

[0065] Step S30, control the compressor to increase its frequency according to the frequency increase rate.

[0066] A control method for an air conditioner proposed in an embodiment of the present invention. During the start-up stage when the compressor starts but has not yet reached the target frequency, the frequency increase rate of the compressor is determined based on the vibration characteristic value of the target component detected in the refrigerant circulation loop, and the compressor is controlled to increase its frequency according to the determined frequency increase rate. During this process, the frequency increase rate of the compressor is no longer a preset fixed rate, but is determined according to the actual vibration situation in the refrigerant circulation loop of the air conditioner. The vibration characteristic value can accurately characterize the stability of the refrigerant circulation loop during the start-up stage. Based on this, it can ensure that the frequency increase rate of the compressor matches the stability of the refrigerant circulation system, improve the accuracy of regulating the frequency increase rate during the compressor start-up process, avoid the occurrence of air conditioner stability problems and reliability problems, and improve the stability and reliability of the refrigerant circulation system during the compressor start-up stage.

[0067] Further, based on the above embodiment, another embodiment of the control method for the air conditioner of the present application is proposed. In this embodiment, referring to Figure 3 , the step S20 includes:

[0068] Step S201, when the vibration characteristic value is less than the vibration characteristic threshold, determine the first frequency increase rate as the frequency increase rate;

[0069] Step S202, when the vibration characteristic value is greater than or equal to the vibration characteristic threshold, determine the second frequency increase rate as the frequency increase rate; the first frequency increase rate is greater than the second frequency increase rate.

[0070] The vibration characteristic threshold is less than or equal to the maximum vibration characteristic value allowed for the stable operation of the refrigerant circulation system. The vibration characteristic threshold can be used to distinguish whether the refrigerant circulation system is in a stable operation state. The vibration characteristic threshold can be a preset fixed parameter or can be determined based on the actual conditions such as the current operating parameters of the compressor or the operating conditions of the environment where the compressor is located.

[0071] Among them, when the compressor is in the process of increasing its frequency, the first frequency increase rate is greater than the current frequency increase rate of the compressor, and the second frequency increase rate is less than the current frequency increase rate of the compressor. When the compressor starts, both the first frequency increase rate and the second frequency increase rate are greater than the current frequency increase rate of the compressor (i.e., 0).

[0072] In this embodiment, when the detected vibration characteristic value is less than the vibration characteristic threshold, it indicates that the refrigerant circulation loop is in a stable operation state. At this time, the compressor increases its frequency at a relatively large frequency increase rate, which is beneficial to effectively improving the rapid cooling or rapid heating ability of the air conditioner on the basis of ensuring the operation stability of the refrigerant circulation loop. When the detected vibration characteristic value is greater than or equal to the vibration characteristic threshold, it indicates that the refrigerant circulation loop is in an unstable operation state. At this time, the compressor increases its frequency at a relatively small frequency increase rate to reduce the vibration fluctuation of the refrigerant circulation loop and make the system operation reach a relatively stable state.

[0073] Based on the above vibration characteristic thresholds, all vibration characteristic values are divided into two numerical intervals, and each numerical interval corresponds to a different target frequency increase rate. In other embodiments, in addition to the vibration characteristic values, more thresholds may be set to divide all vibration characteristic values into more than two numerical intervals. Each numerical interval can represent different degrees of stability of the refrigerant circulation circuit operation. Different numerical intervals correspond to different target frequency increase rates. The corresponding rate is determined as the target frequency increase rate by determining the numerical interval where the vibration characteristic value is located.

[0074] Further, in this embodiment, referring to Figure 3 , before step S20, it further includes:

[0075] Step S101, obtaining the current operating frequency of the compressor;

[0076] Step S102, determining the vibration characteristic threshold according to the operating frequency; the vibration characteristic threshold shows a decreasing trend as the operating frequency increases.

[0077] Different operating frequencies correspond to different vibration characteristic values.

[0078] In this embodiment, if the operating frequency is in different intervals, the vibration characteristic thresholds are different. Based on this, the frequency interval where the operating frequency is located can be determined; the vibration characteristic threshold is determined according to the frequency interval; where the larger the frequency in the frequency interval, the smaller the vibration characteristic threshold. For example, if the target frequency that the compressor finally needs to reach in the startup stage is defined as H3, the frequency range of 0 - H3 is divided into three consecutive frequency intervals: [0, H1), [H1, H2), [H2, H3), where H1 < H2 < H3, and H1, H2, H3 can be pre-set frequency thresholds or frequency thresholds determined based on the actual operating parameters of the compressor or the operating conditions of the compressor. The vibration characteristic thresholds corresponding to the three frequency intervals are U0, U1, and U2 in sequence, and U0 < U1 < U2. Specifically, in this embodiment, the value range of U0 is [55um - 75um], the value range of U1 is [40um - 55um], and the value range of U2 is [30um - 45um]. In other embodiments, U0, U1, and U2 can also be set to other values according to the actual situation.

[0079] It should be noted that in other embodiments, the number of frequency intervals can also be set to more or less according to actual needs, such as 2, 4, 5, etc. The obtained frequency intervals can also be discontinuous intervals.

[0080] In addition, in other embodiments, a calculation formula between the operating frequency and the vibration characteristic threshold may also be established in advance, and the vibration characteristic threshold is calculated by substituting the operating frequency into the calculation formula.

[0081] It should be noted that step S101 here may be executed synchronously with the step of detecting the vibration characteristic value in step S10 above or after the step of detecting the vibration characteristic value, or may be executed before the step of detecting the vibration characteristic value.

[0082] The greater the operating frequency of the compressor, the more likely it is to cause stability problems in the refrigerant circulation circuit. Based on this, in this embodiment, the vibration characteristic threshold decreases as the operating frequency of the compressor increases, so that the higher the operating frequency of the compressor, the smaller the frequency increase rate of the compressor under the same vibration state, which is beneficial to ensuring that the compressor can be continuously maintained in a stable operating state during the frequency increase process, and further improving the operating stability of the compressor during the startup process.

[0083] Further, based on any of the above embodiments, another embodiment of the control method of the air conditioner of the present application is proposed. In this embodiment, referring to Figure 4 , step S20 includes:

[0084] Step S21, obtaining the target correspondence between the vibration characteristic value and the frequency increase rate according to the current operating frequency of the compressor;

[0085] Step S22, determining the frequency increase rate corresponding to the vibration characteristic value based on the target correspondence; wherein, the frequency increase rate corresponding to the vibration characteristic value in the target correspondence decreases as the operating frequency increases.

[0086] Specifically, different operating frequencies correspond to different target correspondences, and the frequency increase rates corresponding to the vibration characteristic values in different target correspondences are different. The greater the operating frequency, the smaller the frequency increase rate corresponding to the vibration characteristic value in the target correspondence corresponding to the operating frequency; conversely, the smaller the operating frequency, the greater the frequency increase rate corresponding to the vibration characteristic value in the target correspondence corresponding to the operating frequency. Specifically, in the above embodiment, when determining one of the first frequency increase rate and the second frequency increase rate as the frequency increase rate based on the magnitude relationship between the vibration characteristic value and the vibration characteristic threshold, on the basis that the first frequency increase rate is greater than the second frequency increase rate, the first frequency increase rate decreases as the operating frequency increases, and the second frequency increase rate decreases as the operating frequency increases.

[0087] The form of the target correspondence relationship can be a calculation formula, a mapping relationship, etc. When the target correspondence relationship is a calculation formula, the vibration characteristic value can be substituted into the calculation formula to calculate the frequency increase rate; when the target correspondence relationship is a mapping relationship, the result matched by querying the mapping relationship through the vibration characteristic value can be used as the frequency increase rate.

[0088] Based on this, the process of obtaining the target correspondence relationship according to the current operating frequency of the compressor is as follows: Determine the frequency range in which the operating frequency is located; Obtain the target correspondence relationship according to the frequency range; Wherein, the larger the frequency of the frequency range, the smaller the frequency increase rate corresponding to the vibration characteristic value in the target correspondence relationship.

[0089] For example, based on the three consecutive frequency ranges [0, H1), [H1, H2), and [H2, H3) obtained by partitioning in the above embodiment, the frequency increase rates corresponding to the vibration characteristic values in the target correspondence relationships corresponding to the three frequency ranges [0, H1), [H1, H2), and [H2, H3) are M1, M2, and M3 respectively, then M1 > M2 > M3.

[0090] Further, when the size relationships between the vibration characteristic value and the vibration characteristic threshold in the target correspondence relationships corresponding to each frequency range are different, and the corresponding frequency increase rates respectively include the above-mentioned first frequency increase rate and the second frequency increase rate, the first frequency increase rate and the second frequency increase rate corresponding to [0, H1) are M11 and M12, the first frequency increase rate and the second frequency increase rate corresponding to [H1, H2) are M21 and M22, and the first frequency increase rate and the second frequency increase rate corresponding to [H2, H3) are M31 and M32. Among them, M11 > M12, M21 > M22, M31 > M32, M11 > M21 > M21, and M12 > M22 > M22. In this embodiment, the value range of M11 is [3Hz / sec - 4Hz / sec], the value range of M12 is [2Hz / sec - 2.5Hz / sec], the value range of M21 is [2Hz / sec - 3.5Hz / sec], the value range of M22 is [1Hz / sec - 2Hz / sec], the value range of M31 is [0.8Hz / sec - 1.5Hz / sec], and the value range of M32 is [0.2Hz / sec - 0.8Hz / sec]. In other embodiments, M11, M12, M21, M22, M31, and M32 can also be set to other values according to actual situations.

[0091] It should be noted that in this embodiment, the partitioning method of the frequency range used to obtain the target correspondence relationship is the same as the partitioning method of the frequency range used to determine the vibration characteristic threshold above. In other embodiments, the partitioning method of the frequency range used to obtain the target correspondence relationship may also be different from the partitioning method of the frequency range used to determine the vibration characteristic threshold above.

[0092] In addition, in other embodiments, different preset frequency values may be associated with different target correspondence relationships. The preset frequency value with the smallest deviation between the current operating frequency and the preset frequency value is used as the target frequency value, and the correspondence relationship associated with the target frequency value is determined as the target correspondence relationship; alternatively, the target correspondence relationship between the vibration characteristic value and the frequency increase rate is a preset correspondence relationship.

[0093] In this embodiment, the correspondence relationship between the vibration characteristic value and the frequency increase rate varies with different operating frequencies. When the operating frequency is higher, the frequency increase rate corresponding to the same characteristic value is smaller, thereby ensuring the accuracy of the determined frequency increase rate and further improving the stability of the refrigerant circulation system operation.

[0094] Further, based on any of the above embodiments, another embodiment of the control method of the air conditioner of the present application is proposed. In this embodiment, referring to Figure 5 , after step S30, it further includes:

[0095] Step S40, during the process of increasing the frequency of the compressor, if the operating frequency of the compressor reaches the first frequency, control the compressor to maintain the operation at the first frequency;

[0096] Step S50, when the compressor maintains the operation at the first frequency until the set condition for the stable operation of the air conditioner is met, obtain the second frequency as the first frequency and return to step S10 until the operating frequency of the compressor reaches the target frequency;

[0097] Wherein, the first frequency is less than the second frequency, and the second frequency is less than or equal to the target frequency.

[0098] The target frequency here is specifically the frequency target value finally reached in the startup stage of the compressor.

[0099] The first frequency and the second frequency here can be preset frequency values or can be determined according to the operating parameters of the compressor or the operating conditions of the compressor.

[0100] Specifically, in one implementation manner, when the continuous duration of the compressor maintaining the first frequency operation reaches the preset duration, it can be determined that the set condition is met; otherwise, it can be determined that the set condition is not met. Based on this, it can be ensured that the compressor operates at the first frequency until the system reaches a stable state and then further increases to the second frequency operation at the frequency increase rate determined according to the vibration characteristic value, so that during the process of the compressor starting up and increasing the frequency to the target frequency, the system can maintain a stable operation state, effectively improving the stability of the refrigerant circulation system operation.

[0101] Further, in another implementation, during the operation of the compressor at the first frequency, the exhaust parameters of the compressor and / or the noise parameters of the outdoor unit can be obtained. When the exhaust parameters and / or the noise parameters reach the target conditions, it can be determined that the set conditions are met; otherwise, it can be determined that the set conditions are not met. Specifically, the exhaust parameters include the exhaust pressure change value or the exhaust temperature change value, and the noise parameters include the operating noise change value. When the exhaust pressure change value and / or the exhaust temperature change value is less than the corresponding set change threshold, and when the operating noise change value is less than the set noise change value, it can be determined that the set conditions are met; otherwise, it can be determined that the set conditions are not met. Thus, during the process of the compressor starting up and increasing the frequency to the target frequency, when the system operates at a certain platform frequency, based on the exhaust parameters of the compressor and / or the noise parameters of the outdoor unit, it can be determined that when the system reaches a stable operating state, it can immediately start to increase to a higher platform frequency, and during the frequency increase process, the frequency increase rate corresponding to the vibration eigenvalue is adapted to ensure the stability of the system operation. Thus, while improving the operation stability of the refrigerant circulation system, the time for the compressor to increase to the target frequency after startup can be effectively shortened, thereby effectively improving the air conditioner's ability to cool or heat quickly.

[0102] Among them, the first frequency, the second frequency, and the target frequency in each cycle process can be used as the critical values of the frequency range involved in the above embodiments. For example, if the target frequency is defined as H3 above, then in the first cycle process, H1 above can be used as the first frequency, and H2 above can be used as the second frequency; in the second cycle process, H2 above can be used as the first frequency, and H3 above can be used as the third frequency.

[0103] In this embodiment, through the above method, it can be ensured that the compressor operates at the first frequency until the system reaches a stable state, and then further increases to the second frequency at a frequency increase rate determined according to the vibration eigenvalue. Thus, during the process of the compressor starting up and increasing the frequency to the target frequency, the system can maintain a stable operating state, effectively improving the operation stability of the refrigerant circulation system.

[0104] Further, to better understand the technical solution involved in the air conditioner control method of this embodiment, the following is an illustration of this embodiment with a specific application:

[0105] Step 1: The outdoor unit starts to operate, and the compressor starts the frequency increase process;

[0106] Step 2: The vibration sensor continuously collects the vibration eigenvalue of the compressor or the system pipeline. The vibration eigenvalue for determination can be the vibration acceleration or the vibration amplitude. Here, the vibration amplitude is adopted, and the continuously collected vibration amplitude is denoted as U. Further, the operating frequency of the compressor is H;

[0107] Step 3: The first stage of the compressor startup, i.e., the operating frequency of the compressor is 0 < H < H1, which belongs to the startup process in the low-frequency stage. Here, H1 is the first platform operating frequency of the compressor. In this frequency range, the vibration threshold U0 of the compressor is generally set in the range of [55um - 75um]. Monitor the vibration U of the compressor in real time and further judge the size relationship between U and U0; when U < U0, it indicates that the vibration of the compressor belongs to the stable operation stage and there is no abnormal vibration. Then, the frequency increase rate of the compressor can be accelerated and increased at a rate of V1. Generally, the value range of V1 is [3Hz / sec - 4Hz / sec]; when U > U0, it indicates that the vibration of the compressor is unstable and there is a large fluctuation stage. Therefore, it is necessary to reduce the frequency increase rate of the compressor to control the vibration fluctuation of the compressor and make the system operation reach relative balance. At this time, it is increased at a rate of V2. Generally, the value range of V2 is [2Hz / sec - 2.5Hz / sec];

[0108] Step 4: During the process of increasing the frequency of the compressor, judge whether the operating frequency H of the compressor is < H1. If so, return to Step 3; if not, proceed to Step 5;

[0109] Step 5: The second stage of the compressor startup, i.e., the operating frequency of the compressor is H1 < H < H2, which belongs to the startup process in the low-frequency stage. Here, H2 is the second platform operating frequency of the compressor. In this frequency range, the vibration threshold U1 of the compressor is generally set in the range of [40um - 55um]. Further, judge the size relationship between U and U1; when U < U1, it indicates that the vibration of the compressor belongs to the stable operation stage and there is no abnormal vibration. Then, the frequency increase rate of the compressor can be accelerated and increased at a rate of V3. Generally, the value range of V3 is [2Hz / sec - 3.5Hz / sec]; when U > U0, it indicates that the vibration of the compressor is unstable and there is a large fluctuation stage. Therefore, it is necessary to reduce the frequency increase rate of the compressor to control the vibration fluctuation of the compressor and make the system operation reach relative balance. At this time, it is increased at a rate of V4. Generally, the value range of V4 is [1Hz / sec - 2Hz / sec];

[0110] Step 6: During the process of increasing the frequency of the compressor, judge whether the operating frequency H of the compressor is < H2. If so, return to Step 5; if not, proceed to Step 7;

[0111] Step 7: The third stage of the compressor startup, i.e., the operating frequency of the compressor is H2 < H < H3, which belongs to the high-frequency stage startup process. Here, H3 is the final set target frequency of the compressor operation. In this frequency range, the vibration threshold U2 of the compressor is generally set within the range of [30um - 45um]. Further, judge the magnitude relationship between U and U2; when U < U2, it indicates that the vibration of the compressor belongs to the stable operation stage and there is no abnormal vibration. Then, the frequency increase rate of the compressor can be increased, and the frequency is increased at a rate of V3. Generally, the value range of V6 is [0.8Hz / sec - 1.5Hz / sec]; when U > U0, it indicates that the vibration of the compressor is unstable and there is a large fluctuation stage. Therefore, it is necessary to reduce the frequency increase rate of the compressor to control the vibration fluctuation of the compressor and make the system operation reach a relative balance. At this time, the frequency is increased at a rate of V4. Generally, the value range of V5 is [0.2Hz / sec - 0.8Hz / sec];

[0112] Step 8: Further, judge whether the operating frequency H of the compressor is < H3. If so, return to Step 7; if not, the frequency increase process ends.

[0113] It should be noted that H1, H2, H2, U0, U1, and U2 here refer to the same parameters as those mentioned in the above embodiments.

[0114] In addition, an embodiment of the present invention also proposes a computer-readable storage medium, on which a control program of an air conditioner is stored. When the control program of the air conditioner is executed by a processor, the relevant steps of any one of the above embodiments of the control method of the air conditioner are implemented.

[0115] It should be noted that in this article, the term "comprising", "including" or any other variation thereof is intended to cover a non-exclusive inclusion, so that a process, method, article or system including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or system. Without more limitations, the element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or system including the element.

[0116] The serial numbers of the above embodiments of the present invention are only for description and do not represent the advantages and disadvantages of the embodiments.

[0117] Through the description of the above embodiments, those skilled in the art can clearly understand that the above-described embodiment methods can be implemented by means of software plus a necessary general hardware platform. Of course, they can also be implemented by hardware, but in many cases, the former is a better implementation. Based on such an understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art can be embodied in the form of a software product. This computer software product is stored in a storage medium as described above (such as ROM / RAM, magnetic disk, optical disc), and includes several instructions for causing a terminal device (which can be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in various embodiments of the present invention.

[0118] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present invention.

Claims

1. A control method for an air conditioner, characterized in that, The control method of the air conditioner includes the following steps: During the startup phase of the compressor of the air conditioner, detect the vibration characteristic value of the refrigerant circulation circuit of the air conditioner; the startup phase is the phase before the compressor is started and then increased to the target frequency; Determine the frequency increase rate of the compressor according to the vibration characteristic value; Control the compressor to increase its frequency according to the frequency increase rate; The step of determining the frequency increase rate of the compressor according to the vibration characteristic value includes: Determine the frequency range in which the current operating frequency of the compressor is located; Obtain the target correspondence between the vibration characteristic value and the frequency increase rate according to the frequency range, and the larger the frequency in the frequency range, the smaller the frequency increase rate corresponding to the vibration characteristic value in the target correspondence; Based on the target correspondence, determine the frequency increase rate of the compressor corresponding to the vibration characteristic value.

2. The control method of the air conditioner according to claim 1, characterized in that, The step of determining the frequency increase rate of the compressor according to the vibration characteristic value includes: When the vibration characteristic value is less than the vibration characteristic threshold, determine the first frequency increase rate as the frequency increase rate; When the vibration characteristic value is greater than or equal to the vibration characteristic threshold, determine the second frequency increase rate as the frequency increase rate; The first frequency increase rate is greater than the second frequency increase rate.

3. The control method of the air conditioner according to claim 2, wherein, Before the step of determining the frequency increase rate of the compressor according to the vibration characteristic value, it further includes: Obtain the current operating frequency of the compressor; Determine the vibration characteristic threshold according to the operating frequency; The vibration characteristic threshold shows a decreasing trend as the operating frequency increases.

4. The control method of the air conditioner according to claim 3, characterized in that, The step of determining the vibration characteristic threshold according to the operating frequency includes: Determine the frequency range in which the operating frequency is located; Determine the vibration characteristic threshold according to the frequency range; Wherein, the larger the frequency in the frequency range, the smaller the vibration characteristic threshold.

5. The control method of the air conditioner according to claim 1, characterized in that, The step of detecting the vibration characteristic value of the refrigerant circulation circuit of the air conditioner includes: Detect the vibration acceleration and / or vibration amplitude of the target component, the vibration characteristic value includes the vibration acceleration and / or the vibration amplitude, and the target component includes the compressor and / or the refrigerant pipeline.

6. The control method of the air conditioner according to any one of claims 1 to 5, characterized in that, After the step of controlling the compressor to increase its frequency according to the frequency increase rate, it further includes: During the process of the compressor increasing its frequency, if the operating frequency of the compressor reaches the first frequency, control the compressor to maintain the first frequency operation; When the compressor maintains the first frequency operation and reaches the set condition for the stable operation of the air conditioner, obtain the second frequency as the first frequency and return to execute the step of detecting the vibration characteristic value of the refrigerant circulation circuit of the air conditioner during the startup phase of the compressor of the air conditioner until the operating frequency of the compressor reaches the target frequency; Wherein, the first frequency is less than the second frequency, and the second frequency is less than or equal to the target frequency.

7. An air conditioner, characterized in that, The air conditioner includes: A compressor; A vibration sensor for detecting the vibration characteristic value of the refrigerant circulation circuit of the air conditioner; A control device, the compressor and the vibration sensor are both connected to the control device, and the control device includes: a memory, a processor, and a control program of the air conditioner stored on the memory and executable on the processor. When the control program of the air conditioner is executed by the processor, the steps of the control method of the air conditioner according to any one of claims 1 to 6 are implemented.

8. A computer-readable storage medium, characterized in that, A control program of the air conditioner is stored on the computer-readable storage medium. When the control program of the air conditioner is executed by the processor, the steps of the control method of the air conditioner according to any one of claims 1 to 6 are implemented.

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