Method and apparatus for controlling air conditioner carrier frequency, air conditioner, storage medium

Abstract

This application relates to the field of smart home appliance technology, and discloses a method for controlling the carrier frequency of an air conditioner, comprising: determining the target rotational speed of an outdoor fan; and adjusting the carrier frequency of the outdoor fan according to the target rotational speed. The target rotational speed of the outdoor fan is determined under different environments. The carrier frequency of the outdoor fan is adjusted under different target rotational speeds. When the target rotational speed of the outdoor fan changes, the carrier frequency can change with the change in target rotational speed, rather than maintaining a maximum carrier frequency. By reducing the carrier frequency of the outdoor fan, the switching losses of the switching devices in the power module are reduced, thereby reducing the power consumption of the outdoor fan's power module. This application also discloses a device, an air conditioner, and a storage medium for controlling the carrier frequency of an air conditioner.

Description

Technical Field

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

[0002] Currently, air conditioners, as household appliances used to regulate ambient temperature, suffer from high power consumption during operation. With the implementation of new energy efficiency standards, major manufacturers are improving the energy efficiency rating of air conditioners by increasing the heat dissipation area of ​​components and changing the refrigerant distribution, but this has correspondingly increased the cost of air conditioners.

[0003] In the prior art, methods for reducing air conditioner power consumption without increasing costs include: acquiring the compressor speed of the air conditioner in real time; comparing the compressor speed with a preset speed; if the compressor speed is lower than the preset speed, setting the carrier frequency of the air conditioner to a first preset carrier frequency; and if the compressor speed is higher than or equal to the preset speed, setting the carrier frequency of the air conditioner to a second preset carrier frequency; wherein the second preset carrier frequency is greater than the first preset carrier frequency.

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

[0005] This technology reduces the power consumption of the air conditioner compressor's power module by changing the compressor's carrier frequency. However, the outdoor fan's power module suffers from high power consumption when driving the outdoor fan, and existing technologies do not disclose a control method to reduce the power consumption of the outdoor fan's power module. 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 method and apparatus for controlling the carrier frequency of an air conditioner, an air conditioner, and a storage medium to reduce the power consumption of the power module of an outdoor fan.

[0008] In some embodiments, the method includes: determining a target rotational speed of the outdoor fan; and adjusting the carrier frequency of the outdoor fan according to the target rotational speed of the outdoor fan.

[0009] Optionally, determining the target speed of the outdoor fan includes: detecting the indoor ambient temperature; and determining the target speed of the outdoor fan corresponding to the temperature difference based on the difference between the indoor ambient temperature and the target temperature set by the user.

[0010] Optionally, adjusting the carrier frequency of the outdoor fan according to the target rotational speed of the outdoor fan includes: determining a target carrier frequency corresponding to the target rotational speed based on the target rotational speed of the outdoor fan; and adjusting the carrier frequency of the outdoor fan to the determined target carrier frequency.

[0011] Optionally, the higher the target rotational speed of the outdoor fan, the higher the carrier frequency of the outdoor fan.

[0012] Optionally, the carrier frequency of the outdoor fan is adjusted according to the target speed of the outdoor fan, including: determining the difference between the target speed and the base speed of the outdoor fan; determining the target carrier frequency of the outdoor fan based on the speed difference and the base carrier frequency of the outdoor fan; and adjusting the carrier frequency of the outdoor fan to the target carrier frequency; wherein, the higher the target speed of the outdoor fan, the higher the target carrier frequency of the outdoor fan.

[0013] Optionally, after adjusting the carrier frequency of the outdoor fan according to the target rotation speed of the outdoor fan, the method further includes: generating a corresponding pulse width modulation signal for the outdoor fan according to the carrier frequency of the outdoor fan; and using the pulse width modulation signal to drive the power module of the outdoor fan.

[0014] Optionally, it also includes: determining the target frequency of the compressor; and adjusting the carrier frequency of the compressor according to the target frequency of the compressor.

[0015] In some embodiments, the apparatus includes a processor and a memory storing program instructions, the processor being configured to execute the above-described method for controlling the air conditioner carrier frequency when the program instructions are executed.

[0016] In some embodiments, the air conditioner includes the aforementioned means for controlling the air conditioner carrier frequency.

[0017] In some embodiments, the storage medium stores program instructions that, when executed, perform the method described above for controlling the air conditioner carrier frequency.

[0018] The method, apparatus, air conditioner, and storage medium for controlling the carrier frequency of an air conditioner provided in this disclosure can achieve the following technical effects:

[0019] Under different environments, the target rotational speed of the outdoor fan is determined. At different target rotational speeds, the carrier frequency of the outdoor fan is adjusted. When the target rotational speed of the outdoor fan changes, the carrier frequency can change accordingly, rather than maintaining a maximum carrier frequency. By reducing the carrier frequency of the outdoor fan, the switching losses of the switching devices in the power module are reduced, thereby lowering the power consumption of the outdoor fan's power module.

[0020] The above general description and the description below are exemplary and illustrative only and are not intended to limit this application. Attached Figure Description

[0021] 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:

[0022] Figure 1 This is a schematic diagram of a power module drive circuit provided in an embodiment of this disclosure;

[0023] Figure 2 This is a schematic diagram of a method for controlling the carrier frequency of an air conditioner provided in an embodiment of this disclosure;

[0024] Figure 3 This is a schematic diagram of another method for controlling the carrier frequency of an air conditioner provided in an embodiment of this disclosure;

[0025] Figure 4 This is a schematic diagram of another method for controlling the carrier frequency of an air conditioner provided in an embodiment of this disclosure;

[0026] Figure 5 This is a schematic diagram of another method for controlling the carrier frequency of an air conditioner provided in an embodiment of this disclosure;

[0027] Figure 6 This is a schematic diagram of another method for controlling the carrier frequency of an air conditioner provided in an embodiment of this disclosure;

[0028] Figure 7 This is a schematic diagram of another method for controlling the carrier frequency of an air conditioner provided in an embodiment of this disclosure;

[0029] Figure 8 This is a schematic diagram of another method for controlling the carrier frequency of an air conditioner provided in an embodiment of this disclosure;

[0030] Figure 9 This is a schematic diagram of a device for controlling the carrier frequency of an air conditioner, provided in an embodiment of this disclosure. Detailed Implementation

[0031] 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.

[0032] 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.

[0033] Unless otherwise stated, the term "multiple" means two or more.

[0034] 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.

[0035] 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.

[0036] 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.

[0037] Combination Figure 1 As shown, the air conditioner's compressor and outdoor fan are driven by their respective power modules. The higher the carrier frequency used to generate the pulse width modulation signal, the higher the switching frequency of the insulated-gate bipolar transistor in the power module, and the greater the power consumption of the power module. The power module's drive circuit includes a rectifier circuit, a power factor correction circuit, a detection circuit, and a control circuit. A temperature sensor in the detection circuit is used to detect the indoor ambient temperature. The processor in the control circuit adjusts the carrier frequencies of the outdoor fan and compressor respectively based on the target speed of the outdoor fan and the target frequency of the compressor. The processor generates pulse width modulation signals according to their respective carrier frequencies to drive the power modules of the outdoor fan and compressor, thereby adjusting the power consumption of the two power modules.

[0038] Combination Figure 2 As shown in the embodiments of this disclosure, a method for controlling the carrier frequency of an air conditioner is provided, comprising:

[0039] S210, the processor determines the target speed of the outdoor fan.

[0040] S220: The processor adjusts the carrier frequency of the outdoor fan according to the target speed of the outdoor fan.

[0041] The method for controlling the carrier frequency of an air conditioner, as provided in this disclosure, determines the target rotational speed of the outdoor fan under different environments. The carrier frequency of the outdoor fan is adjusted at different target rotational speeds. When the target rotational speed of the outdoor fan changes, the carrier frequency can change with the target rotational speed, rather than maintaining a maximum carrier frequency. By reducing the carrier frequency of the outdoor fan, the switching losses of the switching devices in the power module are reduced, thereby reducing the power consumption of the outdoor fan's power module.

[0042] Combination Figure 3 As shown in the embodiments of this disclosure, another method for controlling the carrier frequency of an air conditioner is provided, including:

[0043] S211, a temperature sensor that detects indoor ambient temperature.

[0044] S212, the processor determines the target speed of the outdoor fan corresponding to the temperature difference based on the difference between the indoor ambient temperature and the target temperature set by the user.

[0045] S221, the processor determines the target carrier frequency corresponding to the target speed of the outdoor fan based on the target speed of the outdoor fan.

[0046] S222, the processor adjusts the carrier frequency of the outdoor fan to the determined target carrier frequency.

[0047] The method for controlling the carrier frequency of an air conditioner, as provided in this disclosure, addresses the changing temperature regulation requirements and consequently, the target rotational speed of the outdoor fan when the indoor ambient temperature changes. When the temperature difference is small, the target rotational speed is low. When the temperature difference is large, the target rotational speed is high. Consequently, the adjustment requirement for the target carrier frequency of the outdoor fan changes. When the target rotational speed is low, the target carrier frequency is low. When the target rotational speed is high, the target carrier frequency is high. By reducing the carrier frequency of the outdoor fan, the switching losses of the switching devices in the power module are reduced, thereby lowering the power consumption of the outdoor fan's power module.

[0048] In the disclosed embodiments, the temperature difference represents the absolute value of the numerical value.

[0049] The relationship between the temperature difference and the target speed of the outdoor fan is shown in Table 1:

[0050] Table 1

[0051]

[0052] The correspondence between the target rotational speed of the outdoor fan and the target carrier frequency of the outdoor fan is shown in Table 2:

[0053] Table 2

[0054]

[0055] Alternatively, the higher the target rotational speed of the outdoor fan, the higher its carrier frequency. This way, when the target rotational speed is low, the carrier frequency is low, resulting in low power consumption of the outdoor fan's power module.

[0056] Combination Figure 4 As shown in the embodiments of this disclosure, another method for controlling the carrier frequency of an air conditioner is provided, including:

[0057] S211, a temperature sensor that detects indoor ambient temperature.

[0058] S213, the processor determines the difference between the indoor ambient temperature and the target temperature set by the user.

[0059] S214, the processor determines the target speed of the outdoor fan based on the temperature difference and the base speed of the outdoor fan.

[0060] S223, the processor determines the difference between the target speed and the base speed of the outdoor fan.

[0061] S224, the processor determines the target carrier frequency of the outdoor fan based on the difference in rotational speed and the fundamental carrier frequency of the outdoor fan.

[0062] S225, the processor adjusts the carrier frequency of the outdoor fan to the target carrier frequency.

[0063] Among them, the higher the target rotational speed of the outdoor fan, the higher the target carrier frequency of the outdoor fan.

[0064] The method for controlling the carrier frequency of an air conditioner provided in this disclosure adjusts the target carrier frequency of the outdoor fan through linear adjustment, which has high accuracy and helps to reduce the power consumption of the outdoor fan's power module.

[0065] Alternatively, the target rotational speed can be determined using the following formula: N o =△T×γ+N b Among them, N o Where is the target rotational speed of the outdoor fan, ΔT is the temperature difference, γ is the temperature conversion coefficient, and N is the value of N. b This represents the base rotational speed of the outdoor fan. The value of γ ranges from [10, 30], and preferably, γ is 15, 20, or 25. N b The value range of N is [500, 700]. Preferably, N is... b The value can be 550, 600, or 650. The variables in the formula represent only numerical values ​​and do not include units. The target speed of the outdoor fan is in rpm. This allows for the calculation of the target speed of the outdoor fan with high accuracy.

[0066] Alternatively, the target carrier frequency of the outdoor fan can be determined according to the following formula: f fs =(N o -N b )×α+f bf Among them, f fs N is the target carrier frequency for the outdoor fan. o The target rotational speed of the outdoor fan, N b The base speed of the outdoor fan is given by f, where α is the speed conversion factor and f is the base speed of the outdoor fan. bf N is the fundamental carrier frequency for the outdoor fan. b The value range of N is [500, 700]. Preferably, N is... b The value can be 550, 600, or 650. The value of α ranges from [0.01, 0.02], and preferably, α is 0.011, 0.013, or 0.015. bf The value range of f is [7, 9]. Preferably, f bf The value can be 7.5, 8, or 8.5. When N o ≤N b At that time, f fs The value is f bf The variables in the formula represent only numerical values ​​and do not contain units. The target carrier frequency of the outdoor fan is in kHz. This allows for the accurate calculation of the target carrier frequency, reducing the power consumption of the outdoor fan's power module.

[0067] Combination Figure 5 As shown in the embodiments of this disclosure, another method for controlling the carrier frequency of an air conditioner is provided, including:

[0068] S210, the processor determines the target speed of the outdoor fan.

[0069] S220: The processor adjusts the carrier frequency of the outdoor fan according to the target speed of the outdoor fan.

[0070] S250, the processor determines the target frequency of the compressor.

[0071] S260, the processor adjusts the compressor's carrier frequency according to the compressor's target frequency.

[0072] The method for controlling the carrier frequency of an air conditioner, as provided in this disclosure, determines the target frequency of the compressor under different environments. The carrier frequency of the compressor is adjusted under different target frequencies. When the target frequency of the compressor changes, the carrier frequency can change accordingly, rather than maintaining a maximum carrier frequency. By reducing the carrier frequency of the compressor, the switching losses of the switching devices in the compressor power module are reduced, thereby reducing the power consumption of both the outdoor fan power module and the compressor power module.

[0073] Combination Figure 6 As shown in the embodiments of this disclosure, another method for controlling the carrier frequency of an air conditioner is provided, including:

[0074] S211, a temperature sensor that detects indoor ambient temperature.

[0075] S212, the processor determines the target speed of the outdoor fan corresponding to the temperature difference based on the difference between the indoor ambient temperature and the target temperature set by the user.

[0076] S220: The processor adjusts the carrier frequency of the outdoor fan according to the target speed of the outdoor fan.

[0077] S251, the processor obtains the air conditioner's operating mode.

[0078] S252, the processor determines the target frequency of the compressor corresponding to the difference between the operating mode and the temperature.

[0079] S261, the processor determines the target carrier frequency corresponding to the target frequency based on the target frequency of the compressor.

[0080] S262, the processor adjusts the compressor's carrier frequency to the determined target carrier frequency.

[0081] The method for controlling the air conditioner carrier frequency provided in this disclosure changes the adjustment requirement of the compressor's target carrier frequency when the compressor's target frequency changes. When the target frequency is low, the target carrier frequency is low. When the target frequency is high, the target carrier frequency is high. By reducing the compressor's carrier frequency, the switching losses of the compressor power module's switching devices are reduced, thereby reducing the power consumption of both the outdoor fan power module and the compressor power module.

[0082] The correspondence between the operating mode and temperature difference and the compressor's target frequency is shown in Table 3:

[0083] Table 3

[0084]

[0085] The correspondence between the compressor's target frequency and the compressor's target carrier frequency is shown in Table 4:

[0086] Table 4

[0087]

[0088] Alternatively, the higher the target frequency of the compressor, the higher the carrier frequency of the compressor. In this way, when the target frequency is low, the carrier frequency is low, and the power consumption of the compressor's power module is low.

[0089] Combination Figure 7 As shown in the embodiments of this disclosure, another method for controlling the carrier frequency of an air conditioner is provided, including:

[0090] S210, the processor determines the target speed of the outdoor fan.

[0091] S220: The processor adjusts the carrier frequency of the outdoor fan according to the target speed of the outdoor fan.

[0092] S250, the processor determines the target frequency of the compressor.

[0093] S263, the processor determines the difference between the compressor's target frequency and base frequency.

[0094] S264, the processor determines the compressor's target carrier frequency based on the frequency difference and the compressor's fundamental carrier frequency.

[0095] S265, the processor adjusts the compressor's carrier frequency to the target carrier frequency.

[0096] Among them, the higher the target frequency of the compressor, the higher the target carrier frequency of the compressor.

[0097] The method for controlling the carrier frequency of an air conditioner provided in this disclosure adjusts the target carrier frequency of the compressor through linear adjustment, which has high precision and helps to reduce the power consumption of the compressor's power module.

[0098] Alternatively, the target carrier frequency of the compressor can be determined according to the following formula: f es =(f r -f m )×β+f be Among them, f es f is the target carrier frequency of the compressor. r f is the target frequency of the compressor. m β is the compressor's fundamental frequency, f is the frequency conversion factor, and f is the frequency conversion factor. be f is the compressor's fundamental carrier frequency. m The value range of f is [40, 60]. Preferably, f mThe value can be 45, 50, or 55. The value of β ranges from [0.03, 0.07], and preferably, β is 0.04, 0.05, or 0.06. be The value range of f is [1.5, 2.5]. Preferably, f be The value can be 1.8, 2, or 2.2. Variables in the formula represent only numerical values ​​and do not include units. The unit of the compressor's target carrier frequency is kHz. When f r ≤f m At that time, f es The value is f be This allows for the calculation of the compressor's target carrier frequency, resulting in high precision in carrier frequency adjustment and reduced power consumption of the compressor's power module.

[0099] Combination Figure 8 As shown in the embodiments of this disclosure, another method for controlling the carrier frequency of an air conditioner is provided, including:

[0100] S210, the processor determines the target speed of the outdoor fan.

[0101] S220: The processor adjusts the carrier frequency of the outdoor fan according to the target speed of the outdoor fan.

[0102] S230: The processor generates a corresponding pulse width modulation signal for the outdoor fan based on the carrier frequency of the outdoor fan.

[0103] The S240 processor uses the outdoor fan's pulse width modulation signal to drive the outdoor fan's power module.

[0104] S250, the processor determines the target frequency of the compressor.

[0105] S260, the processor adjusts the compressor's carrier frequency according to the compressor's target frequency.

[0106] S270, the processor generates a corresponding compressor pulse width modulation signal based on the compressor's carrier frequency.

[0107] The S280 processor uses the compressor's pulse width modulation signal to drive the compressor's power module.

[0108] The method for controlling the carrier frequency of an air conditioner, as provided in this embodiment, uses an insulated-gate bipolar transistor (IGBT) whose switching frequency is controlled by a pulse-width modulation (PWM) signal, which is generated by the carrier frequency. The switching power consumption of the power module decreases as the carrier frequency decreases, thereby reducing the power consumption of both the outdoor fan's power module and the compressor's power module.

[0109] Combination Figure 9As shown, this disclosure provides an apparatus for controlling the carrier frequency of an air conditioner, including a processor 41 and a memory 42. Optionally, the apparatus may further include a communication interface 43 and a bus 44. The processor 41, communication interface 43, and memory 42 can communicate with each other via the bus 44. The communication interface 43 can be used for information transmission. The processor 41 can call logical instructions in the memory 42 to execute the method for controlling the carrier frequency of an air conditioner according to the above embodiment.

[0110] Furthermore, the logical instructions in the aforementioned memory 42 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium.

[0111] The memory 42, 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 41 executes functional applications and data processing by running the program instructions / modules stored in the memory 42, that is, it implements the method for controlling the air conditioner carrier frequency in the above embodiments.

[0112] The memory 42 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 42 may include high-speed random access memory and may also include non-volatile memory.

[0113] This disclosure provides an air conditioner that includes the aforementioned device for controlling the air conditioner carrier frequency.

[0114] This disclosure provides a storage medium storing computer-executable instructions configured to perform the above-described method for controlling the carrier frequency of an air conditioner.

[0115] The aforementioned storage medium can be a transient computer-readable storage medium or a non-transitory computer-readable storage medium.

[0116] 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.

[0117] 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 "comprising 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.

[0118] 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.

[0119] 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.

[0120] 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 method for controlling the carrier frequency of an air conditioner, characterized in that, include: Determine the target speed of the outdoor fan; Adjust the carrier frequency of the outdoor fan according to the target speed of the outdoor fan; The process of adjusting the carrier frequency of the outdoor fan according to its target speed includes: determining the difference between the target speed and the base speed of the outdoor fan; and determining the target carrier frequency of the outdoor fan based on the speed difference and the base carrier frequency of the outdoor fan. Determine the target carrier frequency for the outdoor fan using the following formula: f fs =(N o -N b )×α+f bf ; Among them, f fs N is the target carrier frequency for the outdoor fan. o The target rotational speed of the outdoor fan, N b The base speed of the outdoor fan is given by f, where α is the speed conversion factor and f is the base speed of the outdoor fan. bf This is the base carrier frequency for the outdoor fan.

2. The method according to claim 1, characterized in that, Determine the target rotational speed of the outdoor fan, including: Detect indoor ambient temperature; The target speed of the outdoor fan is determined based on the difference between the indoor ambient temperature and the target temperature set by the user.

3. The method according to claim 1, characterized in that, Adjusting the carrier frequency of the outdoor fan according to its target rotational speed also includes: Adjust the carrier frequency of the outdoor fan to the target carrier frequency.

4. The method according to claim 1, characterized in that, N b The value range of f is [500, 700], the value range of α is [0.01, 0.02], and f bf The value range is [7, 9].

5. The method according to claim 1, characterized in that, When N o ≤N b At that time, f fs The value is f bf .

6. The method according to any one of claims 1 to 5, characterized in that, After adjusting the carrier frequency of the outdoor fan according to its target rotational speed, the process also includes: Based on the carrier frequency of the outdoor fan, a corresponding pulse width modulation signal for the outdoor fan is generated; A power module that drives an outdoor fan using a pulse width modulation signal.

7. The method according to claim 6, characterized in that, Also includes: Determine the target frequency of the compressor; Adjust the compressor's carrier frequency according to the compressor's target frequency.

8. An apparatus for controlling the carrier frequency of an air conditioner, comprising a processor and a memory storing program instructions, characterized in that, The processor is configured to execute, when running the program instructions, the method for controlling the air conditioner carrier frequency as described in any one of claims 1 to 7.

9. An air conditioner, characterized in that, Includes the device for controlling the carrier frequency of an air conditioner as described in claim 8.

10. A storage medium storing program instructions, characterized in that, When the program instructions are executed, they perform the method for controlling the air conditioner carrier frequency as described in any one of claims 1 to 7.

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