Control method, control device, air conditioner and storage medium for air conditioners

Abstract

This application relates to the field of smart home appliance technology, and discloses a control method for an air conditioner, comprising: obtaining the noise level of the compressor in real time during the compressor preheating process; and adjusting the carrier frequency of the compressor when the noise level is greater than or equal to a noise threshold until the noise level of the compressor is reduced to below the noise threshold. During the compressor preheating process, the noise level of the compressor is monitored in real time. If the noise level reaches a preset noise threshold, the carrier frequency of the compressor is adjusted. Adjusting the carrier frequency can cause changes in electromagnetic noise, thereby affecting the overall noise level. Therefore, by adjusting the carrier frequency, the noise level during the compressor preheating process can be reduced, thereby optimizing the user experience. This application also discloses a control device for an air conditioner, an air conditioner, and a storage medium.

Description

Technical Field

[0001] This application relates to the field of smart home appliance technology, such as a control method, control device, air conditioner, and storage medium for an air conditioner. Background Technology

[0002] In winter, the outdoor unit of an air conditioner is constantly in a low-temperature environment, and the compressor's internal environment is correspondingly cold. The refrigerant inside the compressor slowly migrates to the colder areas, gradually condensing and depositing inside. Simultaneously, the viscosity of the lubricating oil inside the compressor increases. When the compressor is started under these conditions, its internal temperature rises rapidly within a short time, causing the deposited refrigerant to evaporate quickly and expelling the lubricating oil from the compressor. This results in a rapid drop in the lubricating oil level inside the compressor, leading to problems such as poor lubrication and abnormal friction of components.

[0003] To address the aforementioned issues, a preheating method for an air conditioner compressor is provided in the relevant technology, comprising: acquiring weather forecast information for the area where the air conditioner outdoor unit is located and the ambient temperature of multiple air conditioner outdoor units in the area where the air conditioner is located; determining a first ambient temperature of the air conditioner outdoor unit based on the weather forecast information and the ambient temperature of the multiple air conditioner outdoor units in the area where the air conditioner is located; determining a first preheating power of the electric heating module associated with the air conditioner compressor based on the first ambient temperature, and controlling the electric heating module to operate at the first preheating power.

[0004] In the process of implementing the embodiments of this disclosure, at least the following problems were found in the related art:

[0005] When the preheating function is running, a pulsed current needs to be output to the compressor motor. After receiving the pulsed current, the compressor will inevitably generate some electromagnetic noise. If this electromagnetic noise is too loud, it will cause user discomfort and seriously affect the user experience. Summary of the Invention

[0006] To provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. This summary is not intended as a general commentary, nor is it intended to identify key / important components or describe the scope of protection of these embodiments, but rather as a prelude to the detailed description that follows.

[0007] This disclosure provides a control method, control device, air conditioner, and storage medium for an air conditioner to avoid excessive noise generated by the compressor during the preheating process, thereby optimizing the user experience.

[0008] In some embodiments, the control method includes: obtaining the noise value of the compressor in real time during the compressor preheating process; and adjusting the carrier frequency of the compressor until the noise value of the compressor is reduced to below the noise threshold if the noise value is greater than or equal to a noise threshold.

[0009] In some embodiments, the control device includes a processor and a memory storing program instructions, the processor being configured to execute the control method for an air conditioner described above when the program instructions are executed.

[0010] In some embodiments, the air conditioner includes the control device for the air conditioner described above.

[0011] In some embodiments, the storage medium stores program instructions that, when executed, perform the control method for the air conditioner described above.

[0012] The control method, control device, air conditioner, and storage medium for air conditioners provided in this disclosure can achieve the following technical effects:

[0013] During compressor preheating, the compressor's noise level is monitored in real time. If the noise level reaches a preset threshold, the compressor's carrier frequency is adjusted. Adjusting the carrier frequency alters electromagnetic noise, thus affecting the overall noise level. Therefore, by adjusting the carrier frequency, the noise level during compressor preheating can be reduced, thereby optimizing the user experience.

[0014] The above general description and the description below are exemplary and illustrative only and are not intended to limit this application. Attached Figure Description

[0015] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations and drawings do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are shown as similar elements. The drawings are not to be scaled. And wherein:

[0016] Figure 1 This is a schematic diagram of the structure of a compressor provided in an embodiment of this disclosure;

[0017] Figure 2 This is a schematic diagram of a control method for an air conditioner provided in an embodiment of this disclosure;

[0018] Figure 3 This is a schematic diagram of another control method for an air conditioner provided in an embodiment of this disclosure;

[0019] Figure 4 This is a schematic diagram of another control method for an air conditioner provided in an embodiment of this disclosure;

[0020] Figure 5 This is a schematic diagram of another control method for an air conditioner provided in an embodiment of this disclosure;

[0021] Figure 6This is a schematic diagram of a control device for an air conditioner provided in an embodiment of this disclosure.

[0022] Figure label:

[0023] 1: Outer casing; 2: Motor assembly; 3: Pump body assembly; 4: Lubricating oil storage assembly; 21: Stator assembly; 22: Rotor assembly; 31: Oil guiding structure. Detailed Implementation

[0024] To provide a more detailed understanding of the features and technical content of the embodiments of this disclosure, the implementation of the embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for illustrative purposes only and are not intended to limit the embodiments of this disclosure. In the following technical description, for ease of explanation, several details are used to provide a full understanding of the disclosed embodiments. However, one or more embodiments may still be implemented without these details. In other cases, well-known structures and devices may be simplified in their depiction to simplify the drawings.

[0025] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this disclosure described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0026] Unless otherwise stated, the term "multiple" means two or more.

[0027] In this embodiment of the disclosure, the character " / " indicates that the objects before and after it are in an "or" relationship. For example, A / B means: A or B.

[0028] The term "and / or" describes an association between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or A and B.

[0029] The term "correspondence" can refer to an association or binding relationship. The correspondence between A and B means that there is an association or binding relationship between A and B.

[0030] Figure 1 This is a schematic diagram of the internal structure of a common air conditioner compressor. (Combined with...) Figure 1 As shown, the compressor includes: a housing 1, and a motor section 2, a pump section 3, and a lubricating oil storage section 4 disposed inside the housing 1. The pump section 3 includes an oil guiding structure 31. The motor section 2 includes a stator component 21 and a rotor component 22.

[0031] During normal use, the motor unit 2 starts after being powered by a pulse, driving the pump body unit 3 to rotate, thus realizing the process of air intake, compression, and exhaust. The oil guiding structure 31 draws the lubricating oil from the lubricating oil storage unit 4 into the pump body unit 3 and distributes it to various friction parts to achieve the lubrication function.

[0032] When air conditioners are used in winter, the outdoor unit is constantly exposed to low temperatures. The compressor's internal temperature is very low, causing the lubricating oil to become more viscous. Simultaneously, the lubricating oil gradually migrates to cooler areas and eventually condenses and deposits in the lubricating oil reservoir 4. When the air conditioner is in heating mode, the pump unit 3 agitates the lubricating oil reservoir 4 at high speed. This causes the compressor's internal temperature to rise sharply, resulting in a rapid drop in the oil level in the reservoir 4, leading to poor lubrication and abnormal friction of components.

[0033] To address the aforementioned issues, a compressor preheating function has been proposed in related technologies. In low-temperature winter environments, when the air conditioner is not turned on, a small current is input to the compressor. This current is insufficient to start the compressor. However, the flow of current causes the internal motor of the compressor to continuously generate slight heat, raising the internal temperature of the compressor. This causes the condensed liquid refrigerant in the lubricating oil reservoir to slowly evaporate, increasing the lubricating oil temperature.

[0034] When the preheating function is running, the computer board of the outdoor unit of the air conditioner needs to output pulse current to the compressor motor. When the compressor motor receives this pulse current, it will inevitably generate some electromagnetic noise. In particular, if the carrier wave and harmonics corresponding to the compressor's power-on mode match the mode of the stator, special electromagnetic vibrations will occur, generating significant noise. This noise causes discomfort to users and seriously affects their user experience.

[0035] Figure 2 This is a schematic diagram of a control method for an air conditioner provided in an embodiment of this disclosure. Here, the air conditioner's processor is used as the execution subject to describe the solution.

[0036] Combination Figure 2 As shown, the control method for an air conditioner includes:

[0037] S201: During the compressor preheating process, the processor obtains the compressor noise level in real time.

[0038] Here, the specific operation for obtaining the compressor's noise value in real time can be as follows: under the current operating conditions, obtain the noise value within a preset time period, and use the average noise value within the preset time period as the current real-time noise value. Since the noise value is constantly changing, using the average noise value within the preset time period as the detection value can not only accurately reflect the current actual situation, but also reduce misjudgments.

[0039] S202, when the noise level is greater than or equal to the noise threshold, the processor adjusts the carrier frequency of the compressor until the noise level of the compressor is reduced to below the noise threshold.

[0040] The control method for an air conditioner provided in this disclosure monitors the compressor's noise level in real time during the compressor preheating process. If the noise level reaches a preset noise threshold, the compressor's carrier frequency is adjusted. Adjusting the carrier frequency alters the electromagnetic noise, thus affecting the overall noise level. Therefore, adjusting the carrier frequency reduces the noise level during compressor preheating, thereby optimizing the user experience.

[0041] Optionally, the compressor noise level can be obtained using a noise sensor. Specifically, the noise sensor can be positioned at the top of the compressor. More specifically, it can be located near the compressor motor housing, the compressor discharge pipe, or the compressor's liquid receiver. This proximity of the noise sensor to the compressor allows for more accurate detection of the compressor's noise level.

[0042] Optionally, the noise threshold can be preset to a fixed value. Specifically, this can be achieved by identifying noise values ​​that affect user experience through big data analysis and setting these values ​​as the noise threshold. Alternatively, users can set the noise threshold, or existing noise thresholds can be adjusted individually. This ensures that after reducing the noise to the noise threshold, the noise level meets the user's actual needs, thereby avoiding discomfort for the user.

[0043] Figure 3 This is a schematic diagram of a control method for an air conditioner provided in an embodiment of this disclosure. Here, the air conditioner's processor is used as the execution subject to describe the solution.

[0044] Combination Figure 3 As shown, the control method for an air conditioner includes:

[0045] S301: During the compressor preheating process, the processor obtains the compressor noise level in real time.

[0046] S302, when the noise level is greater than or equal to the noise threshold, the processor adjusts the compressor's carrier frequency to the first carrier frequency.

[0047] S303, the processor obtains the first noise value of the compressor during the first carrier frequency operation.

[0048] S304, if the first noise value is less than the noise threshold, the processor controls the compressor to run at the first carrier frequency.

[0049] S305, if the first noise value is greater than or equal to the noise threshold, the processor controls the compressor to operate at the second carrier frequency.

[0050] The control method for an air conditioner provided in this disclosure monitors the compressor's noise level in real time during the compressor preheating process. If the noise level reaches a preset noise threshold, the compressor's carrier frequency is adjusted to a first carrier frequency. After adjustment, the noise level is detected; if it is lower than the preset noise threshold, operation continues at the first carrier frequency. This reduces the noise generated by the compressor during preheating, thereby optimizing the user experience. If the noise level is still greater than or equal to the noise threshold after adjusting to the first carrier frequency, it is adjusted to another value to reduce the noise level.

[0051] Optionally, the determination of the first carrier frequency includes: the processor obtaining the carrier frequency before adjustment, denoted as the initial carrier frequency; and determining the first carrier frequency based on the initial carrier frequency and a preset carrier frequency change range. This allows for an orderly carrier frequency adjustment process, thereby quickly determining a suitable carrier frequency and reducing the noise level below a preset noise level.

[0052] The carrier frequency variation range can be set to 200Hz, 500Hz, 1000Hz, 2000Hz, etc., and the specific value is set according to the actual situation.

[0053] Optionally, the processor determines the first carrier frequency based on the initial carrier frequency and the preset carrier frequency change amplitude by: the processor calculating the first carrier frequency as the difference between the initial carrier frequency and the carrier frequency change amplitude.

[0054] Optionally, the processor determines the first carrier frequency based on the initial carrier frequency and a preset carrier frequency variation amplitude by: the processor calculating the first carrier frequency as the sum of the initial carrier frequency and the carrier frequency variation amplitude. Optionally, the method for determining the second carrier frequency includes: the processor calculating the second carrier frequency based on the first carrier frequency and the preset carrier frequency variation amplitude. That is, the carrier frequency is further adjusted based on the first carrier frequency. In this way, the carrier frequency is adjusted in an orderly manner, enabling the carrier frequency that reduces the noise value to below the noise threshold to be determined as quickly as possible.

[0055] Optionally, after the processor controls the compressor to operate at the second carrier frequency, the process further includes: the processor obtaining a second noise value during the operation of the second carrier frequency. If the second noise value is less than a noise threshold, the compressor continues to operate at the second carrier frequency. If the second noise value is greater than or equal to the noise threshold, the carrier frequency is further adjusted. This further monitoring of the results after the secondary adjustment helps ensure that the adjusted noise value achieves the expected effect.

[0056] Optionally, the method for determining the second carrier frequency includes: the processor determining an influence trend based on a first noise value and an initial noise value, and determining the second carrier frequency based on the influence trend. The initial noise value is the noise value that triggers the initial carrier frequency adjustment process.

[0057] Optionally, similar to the method for determining the second carrier frequency described above, the carrier frequency adjustment values ​​after the second carrier frequency (which can be considered as the third carrier frequency, fourth carrier frequency, etc.) can be determined by analyzing the changing trends. Specifically, the processor selects carrier frequencies with an increasing or decreasing trend and monitors changes in noise levels. If the noise level decreases, the carrier frequency is continued to be selected according to this trend until the detected noise level tends to stabilize or begins to increase. In this way, a more precise carrier frequency can be continuously determined to reduce the compressor's noise level, thereby optimizing the user experience.

[0058] Optionally, the specific requirement for the noise level to stabilize is that the deviation between any two consecutive noise levels is between 0.5 dB and 1 dB, and there is no decreasing trend. This allows for a more accurate assessment of noise level changes and helps reduce misjudgments.

[0059] Optionally, after the processor increments or decrements the carrier frequency and monitors changes in noise levels, the method further includes: if the noise level increases, reverting to the opposite trend when determining the carrier frequency. That is, if the current carrier frequency is decreasing, it is replaced with a higher frequency than the initial carrier frequency and incremented. This allows for the rapid determination of a suitable carrier frequency to reduce the noise level below the noise threshold, thereby improving the user experience.

[0060] Figure 4 This is a schematic diagram of a control method for an air conditioner provided in an embodiment of this disclosure. Here, the air conditioner's processor is used as the execution subject to describe the solution.

[0061] Combination Figure 4 As shown, the control method for an air conditioner includes:

[0062] S401: During the compressor preheating process, the processor obtains the compressor noise level in real time.

[0063] S402, when the noise value is greater than or equal to the noise threshold, the processor selects multiple carrier frequencies within a preset selectable range.

[0064] S403, the processor obtains the noise value of the compressor when running at each carrier frequency and constructs the corresponding relationship.

[0065] S404, the processor determines the trend of the carrier frequency's influence on the noise value based on the corresponding relationship.

[0066] S405, the processor determines the adjustment value of the carrier frequency based on the influence trend.

[0067] S406, the processor controls the compressor to operate at this adjustment value.

[0068] The control method for air conditioners provided in this disclosure monitors the noise level generated by the compressor in real time during the compressor preheating process. If the noise level reaches a preset noise threshold, multiple noise levels are monitored within a preset carrier frequency range. The influence trend of carrier frequency changes on the noise level is analyzed, and a more suitable carrier frequency adjustment value is determined based on the obtained influence trend. This allows for a more accurate determination of the carrier frequency adjustment value, thereby more effectively reducing noise during the compressor preheating process and optimizing the user experience.

[0069] Optionally, the processor determines the influence trend of the carrier frequency on the noise value based on the correspondence by fitting the above correspondence into a curve. Specifically, the carrier frequency is used as the horizontal axis and the noise value as the vertical axis. This allows for a clear and intuitive determination of the influence trend of the carrier frequency on the noise value, enabling the processor to determine the carrier frequency value based on this trend and reduce the noise value to below a preset noise value, thereby improving the user experience.

[0070] For example, the preset selectable range is 1600Hz to 8000Hz. Noise values ​​are detected at carrier frequencies of 1600, 2000, 2500, 3150, 4000, 5000, 6300, and 8000Hz, respectively. Curves are plotted based on the obtained values ​​to confirm the noise change trend and determine the carrier frequency corresponding to the lowest noise value in order to control the operation of the compressor.

[0071] Optionally, after the processor determines the influence trend of the carrier frequency on the noise value based on the correspondence, if none of the carrier frequencies within the selectable range can reduce the noise value below the noise threshold, then the carrier frequency with the lowest corresponding noise value is selected, and the compressor is controlled to operate at that carrier frequency. This reduces compressor noise within a suitable carrier frequency range, thereby optimizing the user experience.

[0072] Figure 5 This is a schematic diagram of a control method for an air conditioner provided in an embodiment of this disclosure. Here, the air conditioner's processor is used as the execution subject to describe the solution.

[0073] Combination Figure 5 As shown, the control method for an air conditioner includes:

[0074] S501: During the compressor preheating process, the processor obtains the compressor noise level in real time.

[0075] S502, when the noise level is greater than or equal to the noise threshold, the processor adjusts the carrier frequency of the compressor until the noise level of the compressor is reduced to below the noise threshold.

[0076] S503, the processor determines the current carrier frequency as the target carrier frequency.

[0077] S504, the processor obtains the current environmental parameters.

[0078] S505, the correspondence between processor storage environment parameters and target carrier frequency.

[0079] The control method for an air conditioner provided in this disclosure monitors noise levels in real time during compressor preheating. Electromagnetic noise is altered by adjusting the carrier frequency, thereby changing the noise level during preheating. After the noise level is reduced below a noise threshold, the carrier frequency is recorded and correlated with current environmental parameters for later retrieval.

[0080] Optionally, after the processor stores the environmental parameters and the target carrier frequency, the process further includes: during the subsequent warm-up process, if the noise value is higher than a preset noise threshold, detecting the current environmental parameters and matching them with the stored values. If the stored values ​​include the current environmental parameters, the target carrier frequency corresponding to the current environmental parameters is directly retrieved. If it does not exist, step S502 is executed. This simplifies the operation while obtaining a more accurate carrier frequency to reduce noise.

[0081] Optionally, after calling the target carrier frequency corresponding to the current environmental parameters, the process further includes: the processor obtaining the noise value generated by the compressor. If the noise value is greater than or equal to a preset noise value, the processor executes step S502. In this way, after calling historical data, the noise value during actual operation is monitored, and appropriate adjustments are made based on the monitoring results. This avoids the problem of historical data being incompletely applicable due to different actual conditions, thereby helping to optimize the noise reduction function and improve the user experience.

[0082] Optionally, after the processor adjusts the compressor's carrier frequency until the compressor's noise level drops below a noise threshold, the method further includes: adjusting the compressor's input power at the current carrier frequency and detecting the noise level to obtain an even lower noise level. This further reduces the noise level, thereby optimizing the user experience.

[0083] Combination Figure 6As shown, this disclosure provides a control device for an air conditioner, including a processor 60 and a memory 61. Optionally, the device may further include a communication interface 62 and a bus 63. The processor 60, communication interface 62, and memory 61 can communicate with each other via the bus 63. The communication interface 62 can be used for information transmission. The processor 60 can call logical instructions in the memory 61 to execute the control method for the air conditioner described in the above embodiment.

[0084] Furthermore, the logic instructions in the aforementioned memory 61 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium.

[0085] The memory 61, as a storage medium, can be used to store software programs and computer-executable programs, such as program instructions / modules corresponding to the methods in the embodiments of this disclosure. The processor 60 executes functional applications and data processing by running the program instructions / modules stored in the memory 61, thereby implementing the control method for the air conditioner in the above embodiments.

[0086] The memory 61 may include a program storage area and a data storage area. The program storage area may store the operating system and applications required for at least one function; the data storage area may store data created based on the use of the terminal device. Furthermore, the memory 61 may include high-speed random access memory and may also include non-volatile memory.

[0087] This disclosure provides an air conditioner that includes the control device for the air conditioner described above.

[0088] This disclosure provides a storage medium storing computer-executable instructions configured to execute the above-described control method for an air conditioner.

[0089] The aforementioned storage medium can be a transient computer-readable storage medium or a non-transitory computer-readable storage medium.

[0090] The technical solutions of this disclosure can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes one or more instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the method described in this disclosure. The aforementioned storage medium can be a non-transitory storage medium, including: a USB flash drive, a portable hard drive, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and other media capable of storing program code; it can also be a transient storage medium.

[0091] The foregoing description and accompanying drawings fully illustrate embodiments of this disclosure to enable those skilled in the art to practice them. Other embodiments may include structural, logical, electrical, procedural, and other changes. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the order of operation may vary. Parts and features of some embodiments may be included in or replace parts and features of other embodiments. Moreover, the terminology used in this application is for describing embodiments only and is not intended to limit the claims. As used in the description of embodiments and claims, the singular forms “a,” “an,” and “the” are intended to equally include the plural forms unless the context clearly indicates otherwise. Similarly, the term “and / or” as used in this application means including one or more of the associated listed items and all possible combinations thereof. Additionally, when used in this application, the term "comprise" and its variations "comprises" and / or "comprising" refer to the presence of stated features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or groups thereof. Without further limitations, an element defined by the phrase "comprises a..." does not exclude the presence of other identical elements in the process, method, or apparatus that includes said element. In this document, each embodiment may focus on the differences from other embodiments, and similar or identical parts between embodiments can be referred to mutually. For methods, products, etc., disclosed in the embodiments, if they correspond to the method section disclosed in the embodiments, the relevant parts can be referred to the description of the method section.

[0092] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the embodiments of this disclosure. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0093] The methods and products (including but not limited to devices and equipment) disclosed in the embodiments herein can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For instance, the division of units may be merely a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the shown or discussed units may be through some interfaces, and the indirect coupling or communication connection between devices or units may be electrical, mechanical, or other forms. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of the units may be selected to implement this embodiment according to actual needs. Furthermore, the functional units in the embodiments of this disclosure may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0094] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to embodiments of this disclosure. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. In some alternative implementations, the functions marked in the blocks may occur in a different order than that shown in the drawings. For example, two consecutive blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. In the descriptions corresponding to the flowcharts and block diagrams in the accompanying drawings, the operations or steps corresponding to different blocks may also occur in a different order than disclosed in the description, and sometimes there is no specific order between different operations or steps. For example, two consecutive operations or steps may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. Each block in a block diagram and / or flowchart, and combinations of blocks in a block diagram and / or flowchart, can be implemented using a dedicated hardware-based system that performs the specified function or action, or using a combination of dedicated hardware and computer instructions.

Claims

1. A control method for an air conditioner, characterized by, The method comprises: During the preheating of the compressor, a noise value of the compressor is obtained in real time; In a case where the noise value is greater than or equal to a noise threshold value, the carrier frequency of the compressor is adjusted until the noise value of the compressor is reduced to below the noise threshold value; A current carrier frequency is determined as a target carrier frequency; A current environmental parameter is obtained; A correspondence between the environmental parameter and the target carrier frequency is stored; In a subsequent preheating process, if the noise value is higher than a preset noise threshold value, the current environmental parameter is detected and matched with the stored value; If the current environmental parameter is included in the stored value, a target carrier frequency corresponding to the current environmental parameter is directly called; If the current environmental parameter is not included in the stored value, the carrier frequency of the compressor is adjusted until the noise value of the compressor is reduced to below the noise threshold value; After the carrier frequency of the compressor is adjusted until the noise value of the compressor is reduced to below the noise threshold value, the input power of the compressor is adjusted at the current carrier frequency to obtain a lower noise value.

2. The control method according to claim 1, characterized by, The adjusting of the carrier frequency of the compressor comprises: The carrier frequency of the compressor is adjusted to a first carrier frequency; A first noise value of the compressor during the running of the first carrier frequency is obtained; In a case where the first noise value is less than the noise threshold value, the compressor is controlled to run at the first carrier frequency.

3. The control method according to claim 1, characterized by, The adjusting of the carrier frequency of the compressor comprises: A plurality of carrier frequencies are selected in a preset selectable range; A noise value of the compressor during the running of each carrier frequency is obtained to construct a correspondence; An influence trend of the carrier frequency on the noise value is determined according to the correspondence; An adjustment value of the carrier frequency is determined according to the influence trend; The compressor is controlled to run at the adjustment value.

4. The control method according to claim 2, characterized by, The determination of the first carrier frequency comprises: An initial carrier frequency before adjustment is obtained; The first carrier frequency is determined according to the initial carrier frequency and a preset carrier frequency variation amplitude.

5. The control method according to claim 2, characterized by, After the first noise value of the compressor during the running of the first carrier frequency is obtained, the method further comprises: In a case where the first noise value is greater than or equal to the noise threshold value, the compressor is controlled to run at a second carrier frequency.

6. The control method according to claim 5, characterized by The determination of the second carrier frequency comprises: An influence trend is determined according to the first noise value and an initial noise value; The second carrier frequency is determined according to the influence trend; The initial noise value is a noise value triggering a first carrier frequency adjustment process.

7. A control device for an air conditioner comprising a processor and a memory having stored program instructions, characterized in that, The processor is configured to execute the control method for the air conditioner when the program instruction is run.

8. An air conditioner characterized by comprising: The control device for the air conditioner comprises the control device according to claim 7.

9. A storage medium storing program instructions, characterized in that, The program instruction is configured to execute the control method for the air conditioner when the program instruction is run.

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