Control method and device for noise reduction of air conditioner, air conditioner, storage medium

Abstract

The application relates to the technical field of intelligent air conditioners, and discloses a control method for noise reduction of an air conditioner, which comprises the following steps: in the case that the air conditioner receives a start-up instruction, the indoor environment temperature is acquired; in the case that the indoor environment temperature is less than an indoor temperature threshold value, a preheating mode is run; and in the case that preheating is completed, a normal operation mode is entered. According to the method, after the air conditioner is started, the preheating mode is run, so that the temperature in an air duct is increased before normal operation of the air conditioner. After the temperature in the air duct is increased, the proportion of gaseous refrigerant in the pipeline is higher than that of liquid refrigerant, so that the pressure in the pipeline is increased. The flow power of the liquid refrigerant in the pipeline after the pressure is increased is improved, so that the flow of the refrigerant in the pipeline is smoother. Therefore, the possibility of refrigerant noise generated during operation of the air conditioner can be reduced. The application further discloses a control device for noise reduction of an air conditioner, an air conditioner and a storage medium.

Description

Technical Field

[0001] This application relates to the field of intelligent air conditioning technology, such as a control method and device for noise reduction in air conditioners, an air conditioner, and a storage medium. Background Technology

[0002] Currently, air conditioners generate varying degrees of refrigerant noise during operation. This noise, transmitted into the user's living space, can easily create a negative experience. Therefore, noise reduction measures are necessary for air conditioners.

[0003] To reduce noise in air conditioners, a method for reducing air conditioner noise has been disclosed in related technologies. This method includes: acquiring a refrigerant noise signal generated by the air conditioner; determining a target silencer corresponding to the refrigerant noise signal from a set of multiple pre-set air conditioner silencers based on the refrigerant noise signal; and using the target silencer to perform noise reduction processing on the air conditioner.

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

[0005] While related technologies can reduce refrigerant noise already generated during air conditioner operation, they cannot significantly reduce the likelihood of refrigerant noise being generated during operation. Furthermore, these technologies require the pre-installation of multiple different air conditioner mufflers to address different types of refrigerant noise, increasing the cost of noise reduction.

[0006] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this application, and therefore may include information that does not constitute prior art known to those skilled in the art. Summary of the Invention

[0007] 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.

[0008] This disclosure provides a control method and device for noise reduction in air conditioners, an air conditioner, and a storage medium, which can reduce the possibility of refrigerant noise being generated during the operation of the air conditioner and reduce the cost of noise reduction treatment for the air conditioner.

[0009] In some embodiments, the method includes:

[0010] When the air conditioner receives a power-on command, the indoor ambient temperature is obtained;

[0011] When the indoor ambient temperature is lower than the indoor temperature threshold, the preheating mode will be activated.

[0012] Once preheating is complete, it will enter normal operating mode.

[0013] Optionally, a preheating mode may be operated, including: performing heating operation; operating the compressor at a set operating frequency; and opening the solenoid valve to a set angle.

[0014] Optionally, the compressor is operated at a set operating frequency, including: operating the compressor at a first operating frequency F1 when the outdoor ambient temperature is greater than or equal to an outdoor temperature threshold; or operating the compressor at a second operating frequency F2 when the outdoor ambient temperature is less than an outdoor temperature threshold; wherein, F1 > F2.

[0015] Optionally, after the compressor is operated at the second operating frequency F2, the method further includes: increasing the operating frequency of the compressor to the third operating frequency F3 if the frequency increase condition is met; wherein, F3 > F1.

[0016] Optionally, the conditions for meeting the frequency increase conditions include: the indoor coil temperature of the indoor heat exchanger is increased to the set temperature; or, the compressor operates at the second operating frequency for a preset duration.

[0017] Optionally, opening the solenoid valve to a set angle includes: opening the solenoid valve to a first angle A when the outdoor ambient temperature is greater than or equal to an outdoor temperature threshold; or opening the solenoid valve to a second angle B when the outdoor ambient temperature is less than an outdoor temperature threshold; wherein A > B.

[0018] Optionally, the preheating mode also includes keeping the indoor fan off.

[0019] Optionally, the preheating mode may also include: acquiring the hairpin tube temperature of the indoor heat exchanger; and completing preheating once the hairpin tube temperature rises to the indoor temperature threshold.

[0020] In some embodiments, the apparatus includes a processor and a memory storing program instructions, wherein the processor is configured to execute the aforementioned control method for air conditioner noise reduction when the program instructions are executed.

[0021] In some embodiments, the air conditioner includes: an outdoor unit, an indoor unit, and the aforementioned control device for air conditioner noise reduction. The aforementioned control device for air conditioner noise reduction is installed in the indoor unit.

[0022] In some embodiments, the storage medium stores program instructions, wherein the program instructions, when executed, perform the aforementioned control method for noise reduction in an air conditioner.

[0023] The control method and apparatus for noise reduction in air conditioners, the air conditioner, and the storage medium provided in this disclosure can achieve the following technical effects:

[0024] After the air conditioner is turned on, running the preheating mode raises the temperature inside the air duct before normal operation. This increased temperature raises the proportion of gaseous refrigerant in the pipes compared to liquid refrigerant, leading to increased pressure within the pipes. This increased pressure enhances the flow of the liquid refrigerant, resulting in smoother flow. Consequently, the likelihood of refrigerant noise during operation is reduced. Furthermore, this noise reduction process eliminates the need for an additional silencer or structural modifications to the air conditioner, lowering the overall cost.

[0025] The above general description and the description below are exemplary and illustrative only and are not intended to limit this application. Attached Figure Description

[0026] 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:

[0027] Figure 1 This is a schematic diagram of an air conditioner.

[0028] Figure 2 This is a schematic diagram of a noise reduction control method for an air conditioner provided in an embodiment of this disclosure;

[0029] Figure 3 This is a schematic diagram of another control method for noise reduction in air conditioners provided in an embodiment of this disclosure;

[0030] Figure 4 This is a schematic diagram of another control method for noise reduction in air conditioners provided in an embodiment of this disclosure;

[0031] Figure 5 This is a schematic diagram of a control device for noise reduction in an air conditioner provided in an embodiment of this disclosure;

[0032] Figure 6 This is a schematic diagram of an air conditioner provided in an embodiment of this disclosure.

[0033] Figure label:

[0034] 1: Air conditioner; 2: Controller; 3: Indoor heat exchanger; 4: Indoor fan; 5: First temperature sensor; 6: Second temperature sensor; 7: Solenoid valve; 8: Compressor; 9: Outdoor heat exchanger; 10: Outdoor fan; 11: Third temperature sensor; 12: Four-way valve; 13: Throttling device;

[0035] 111: Indoor unit; 222: Outdoor unit. Detailed Implementation

[0036] 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.

[0037] 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.

[0038] Unless otherwise stated, the term "multiple" means two or more.

[0039] 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.

[0040] 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.

[0041] 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.

[0042] Combination Figure 1 As shown, the air conditioner 1 includes an indoor unit and an outdoor unit. The indoor unit includes a controller 2, an outdoor heat exchanger 3, an outdoor fan 4, a first temperature sensor 5, a second temperature sensor 6, and a solenoid valve 7. The outdoor unit includes a compressor 8, an outdoor heat exchanger 9, an outdoor fan 10, a third temperature sensor 11, a four-way valve 12, and a throttling device 13.

[0043] The throttling device 13 is used to regulate the refrigerant pressure during the operation of the air conditioner 1. When the air conditioner 1 is operating in different working modes, the flow direction of the refrigerant in the system pipeline can be changed by the four-way valve 12, thereby realizing the switching between working modes.

[0044] Among them, the solenoid valve 7 is used to regulate the refrigerant flow during the operation of the air conditioner 1.

[0045] The first temperature sensor 5 is used to detect the indoor ambient temperature, the second temperature sensor 6 is used to detect the indoor coil temperature of the indoor heat exchanger 9, and the hairpin tube temperature of the indoor heat exchanger 9. The third temperature sensor 11 is used to detect the outdoor ambient temperature.

[0046] The controller 2 is connected to the indoor fan 4, the first temperature sensor 5, the second temperature sensor 6, the solenoid valve 7, the compressor 8, the outdoor fan 10, the third temperature sensor 11, and the throttling device 13. It is used to acquire the indoor ambient temperature, the indoor coil temperature, the hairpin tube temperature, and the outdoor ambient temperature, as well as the user's set temperature. It also controls the operation of the indoor fan 4, the solenoid valve 7, the compressor 8, the outdoor fan 10, and the throttling device 13.

[0047] Currently, air conditioners generate varying degrees of refrigerant noise during operation. This noise, transmitted into the user's living space, can easily create a negative experience. Therefore, noise reduction measures are necessary for air conditioners.

[0048] To reduce noise in air conditioners, a method for reducing air conditioner noise has been disclosed in related technologies. This method includes: acquiring a refrigerant noise signal generated by the air conditioner; determining a target silencer corresponding to the refrigerant noise signal from a set of multiple pre-installed air conditioner silencers based on the refrigerant noise signal; and using the target silencer to reduce noise in the air conditioner. While this related technology can reduce refrigerant noise already generated during air conditioner operation, it is difficult to reduce the likelihood of refrigerant noise being generated during operation. Furthermore, this related technology requires pre-configuring multiple different air conditioner silencers on the air conditioner for different refrigerant noise levels, increasing the cost of noise reduction.

[0049] This disclosure provides a method in which, after the air conditioner is turned on, a preheating mode is used to raise the temperature within the air duct before normal operation. This increases the flow dynamics of the liquid refrigerant within the pipes, resulting in smoother refrigerant flow. This reduces the likelihood of refrigerant noise generated during air conditioner operation. Furthermore, this noise reduction process eliminates the need for an additional silencer or structural modifications to the air conditioner, thus lowering the cost of noise reduction treatment.

[0050] Combination Figure 1 The air conditioner shown in this disclosure provides a control method for noise reduction in an air conditioner, such as... Figure 2 As shown, the method includes:

[0051] S21: When the air conditioner receives a start command, it obtains the indoor ambient temperature.

[0052] S22, when the indoor ambient temperature is lower than the indoor temperature threshold, the air conditioner operates in preheating mode.

[0053] S23, after preheating is complete, the air conditioner enters normal operating mode.

[0054] The normal operating mode is the preset working mode. Alternatively, the normal operating mode is the working mode determined by the controller based on the set temperature and indoor humidity.

[0055] The noise reduction control method for air conditioners provided in this disclosure can raise the temperature inside the air duct before normal operation by running a preheating mode after the air conditioner is turned on. After the temperature inside the air duct increases, the proportion of gaseous refrigerant in the pipes is higher than that of liquid refrigerant, resulting in increased pressure within the pipes. This increased pressure enhances the flow momentum of the liquid refrigerant, making its flow smoother. Therefore, the possibility of refrigerant noise generated during air conditioner operation can be reduced. Furthermore, the noise reduction process does not require additional air conditioner silencers or changes to the air conditioner's structure, reducing the cost of noise reduction treatment. Additionally, the increased temperature inside the air duct dilutes the grease on the indoor fan shaft, improving lubrication. This further reduces the possibility of friction noise generated by the indoor fan rotation during air conditioner operation.

[0056] Optionally, 15℃ < T1 ≤ 20℃. Wherein, T1 is the indoor temperature threshold. More specifically, T1 = 16℃, 17℃, 18℃, or 19℃.

[0057] Optionally, the air conditioner operates in preheating mode, including: the air conditioner operates in heating mode. The controller causes the compressor to operate at a set operating frequency. The controller opens the solenoid valve to a set angle.

[0058] Optionally, the controller operates the compressor at a set operating frequency, including: when the outdoor ambient temperature is greater than or equal to an outdoor temperature threshold, the controller operates the compressor at a first operating frequency F1. Alternatively, when the outdoor ambient temperature is less than the outdoor temperature threshold, the controller operates the compressor at a second operating frequency F2. Wherein, F1 > F2.

[0059] In this way, during the preheating mode of the air conditioner, when the outdoor temperature is low, the outdoor unit experiences significant heat loss. Heat exchange is necessary between the outdoor and indoor units. During this heat exchange, the compressor operates at a lower frequency, reducing the refrigerant flow rate within the pipes. This, in turn, reduces refrigerant noise generated during the preheating process.

[0060] Optionally, 20℃ < T1 ≤ 25℃. Where T2 is the outdoor temperature threshold. More specifically, T2 = 21℃, 22℃, 23℃, or 24℃.

[0061] Optionally, 29Hz > F1 > F2 ≥ 20Hz. More specifically, F1 = 28Hz, 25Hz, 23Hz, or 21Hz. F2 = 28Hz, 25Hz, 23Hz, or 21Hz.

[0062] Optionally, after the controller operates the compressor at the second operating frequency F2, it further includes: if the frequency increase condition is met, the controller increases the operating frequency of the compressor to a third operating frequency F3. Wherein, F3 > F1.

[0063] Therefore, during the preheating mode of the air conditioner, when the outdoor temperature is low, the compressor operates at a low frequency, resulting in low preheating efficiency. Increasing the compressor's operating frequency, while meeting the requirements for frequency increase, can improve the air conditioner's preheating efficiency.

[0064] Optionally, the conditions for meeting the frequency increase criteria include: the indoor coil temperature of the indoor heat exchanger rising to the set temperature; or, the compressor operating at the second operating frequency for a preset duration.

[0065] Optionally, 80Hz < F3 < 150Hz. More specifically, F3 = 90Hz, 100Hz, 110Hz, 120Hz, 130Hz, or 140Hz.

[0066] Optionally, the controller opens the solenoid valve to a set angle, including: when the outdoor ambient temperature is greater than or equal to an outdoor temperature threshold, the controller opens the solenoid valve to a first angle A; or, when the outdoor ambient temperature is less than the outdoor temperature threshold, the controller opens the solenoid valve to a second angle B. Wherein, A > B.

[0067] In this way, during the preheating mode of the air conditioner, when the outdoor temperature is high, the solenoid valve opens to a larger angle, increasing the refrigerant flow in the pipes. This improves the preheating efficiency of the air conditioner. When the outdoor temperature is low, the solenoid valve opens to a smaller angle, reducing the refrigerant flow in the pipes. This reduces the refrigerant noise generated by the air conditioner during preheating.

[0068] Optionally, 270° ≤ A ≤ 360°. More specifically, A = 280°, 290°, 300°, 310°, 320°, 330°, 340°, or 350°.

[0069] Alternatively, 27° ≤ B ≤ 30°. More specifically, B = 28° or 29°.

[0070] Optionally, the normal operating modes of the air conditioner include at least: heating mode, cooling mode, or dehumidification mode.

[0071] Optionally, the air conditioner determines its operating mode based on the set temperature and indoor humidity, including: when the indoor humidity is higher than a humidity threshold, the air conditioner operates in dehumidification mode; when the indoor humidity is lower than the humidity threshold, the controller compares the set temperature with the indoor temperature. The controller determines the air conditioner's operating mode based on the comparison result.

[0072] Optionally, the controller determines the air conditioner's operating mode based on the comparison results, including: operating the air conditioner in heating mode when the set temperature is greater than or equal to the indoor ambient temperature; and operating the air conditioner in cooling mode when the set temperature is lower than the indoor ambient temperature.

[0073] Combination Figure 3 As shown in the embodiments of this disclosure, another control method for noise reduction in air conditioners is provided, including:

[0074] S31: When the air conditioner receives a start command, it obtains the indoor ambient temperature.

[0075] S32 indicates that the air conditioner will operate in preheating mode when the indoor ambient temperature is lower than the indoor temperature threshold.

[0076] S33, the air conditioner is in heating mode.

[0077] S341, the controller causes the compressor to operate at a set operating frequency.

[0078] S342, the controller opens the solenoid valve to the set angle.

[0079] S343, the controller keeps the indoor fan off.

[0080] S35, after preheating is complete, the air conditioner enters normal operating mode.

[0081] The noise reduction control method for air conditioners provided in this embodiment keeps the indoor fan off during the preheating mode of the air conditioner, reducing heat exchange between the indoor heat exchanger and the indoor ambient temperature. This improves the preheating efficiency of the air conditioner.

[0082] Combination Figure 4 As shown in the embodiments of this disclosure, another control method for noise reduction in air conditioners is provided, including:

[0083] S41: When the air conditioner receives a start command, it obtains the indoor ambient temperature.

[0084] S42 indicates that the air conditioner will operate in preheating mode when the indoor ambient temperature is lower than the indoor temperature threshold.

[0085] S43, the air conditioner is in heating mode.

[0086] S441, the controller causes the compressor to operate at a set operating frequency.

[0087] S442, the controller opens the solenoid valve to the set angle.

[0088] S45, the controller obtains the hairpin tube temperature of the indoor heat exchanger.

[0089] S46, the air conditioner completes preheating when the temperature of the carding tube rises to the indoor temperature threshold.

[0090] S47, after preheating is complete, the air conditioner enters normal operating mode.

[0091] The noise reduction control method for air conditioners provided in this embodiment accurately characterizes the temperature within the air conditioner's duct, reflecting the preheating effect. By using the hairpin tube temperature reaching the indoor temperature threshold as the condition for the air conditioner to complete preheating, the preheating mode duration is prevented from being too long or too short, ensuring the air conditioner enters normal operation at a reasonable time. This reduces waste of air conditioner resources and further lowers the cost of noise reduction treatment.

[0092] Combination Figure 5 As shown, this embodiment of the disclosure provides a control device 500 for air conditioner noise reduction, including a processor 100 and a memory 101. Optionally, the device may further include a communication interface 102 and a bus 103. The processor 100, communication interface 102, and memory 101 can communicate with each other via the bus 103. The communication interface 102 can be used for information transmission. The processor 100 can call logical instructions in the memory 101 to execute the control method for air conditioner noise reduction described in the above embodiment.

[0093] Furthermore, the logic instructions in the aforementioned memory 101 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium.

[0094] The memory 101, as a computer-readable 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 100 executes functional applications and data processing by running the program instructions / modules stored in the memory 101, thereby implementing the control method for noise reduction of the air conditioner in the above embodiments.

[0095] The memory 101 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 101 may include high-speed random access memory and may also include non-volatile memory.

[0096] Combination Figure 6 As shown, this disclosure provides an air conditioner 1, including an indoor unit 111, an outdoor unit 222, and the aforementioned control device 500 for air conditioner noise reduction. The control device 500 for air conditioner noise reduction is installed in the indoor unit 111. The installation relationship described herein is not limited to placement inside the product, but also includes installation connections with other components of the product, including but not limited to physical connections, electrical connections, or signal transmission connections. Those skilled in the art will understand that the control device 500 for air conditioner noise reduction can be adapted to any suitable indoor unit 111, thereby realizing other feasible embodiments.

[0097] This disclosure provides a storage medium storing computer-executable instructions configured to execute the aforementioned control method for noise reduction in an air conditioner. The storage medium can be a transient computer-readable storage medium or a non-transitory computer-readable storage medium.

[0098] 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.

[0099] 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.

[0100] 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.

[0101] 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.

[0102] 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 noise reduction in air conditioners, characterized in that, include: When the air conditioner receives a power-on command, the indoor ambient temperature is obtained; When the indoor ambient temperature is lower than the indoor temperature threshold, the preheating mode will be activated. After preheating is complete, it enters normal operation mode; The preheating mode includes: opening the solenoid valve to a set angle; initiating heating operation; and operating the compressor at a set operating frequency. The solenoid valve is used to regulate the refrigerant flow during air conditioner operation. Opening the solenoid valve to a set angle includes: opening the solenoid valve to a first angle A when the outdoor ambient temperature is greater than or equal to an outdoor temperature threshold; or opening the solenoid valve to a second angle B when the outdoor ambient temperature is less than an outdoor temperature threshold; wherein A > B. The step of operating the compressor at a set operating frequency includes: operating the compressor at a first operating frequency F1 when the outdoor ambient temperature is greater than or equal to an outdoor temperature threshold.

2. The method according to claim 1, characterized in that, To enable the compressor to operate at a set operating frequency, the following are also included: When the outdoor ambient temperature is lower than the outdoor temperature threshold, the compressor is operated at the second operating frequency F2. Among them, F1 > F2.

3. The method according to claim 2, characterized in that, After the compressor is operated at the second operating frequency F2, the following is also included: If the frequency increase conditions are met, the compressor's operating frequency will be increased to the third operating frequency F3; Among them, F3 > F1.

4. The method according to claim 3, characterized in that, The conditions for frequency upsampling include: The indoor coil temperature of the indoor heat exchanger is raised to the set temperature; or... The compressor operates at the second operating frequency for a preset duration.

5. The method according to any one of claims 1 to 4, characterized in that, The preheating mode also includes: Keep the indoor fan off.

6. The method according to any one of claims 1 to 4, characterized in that, The preheating mode also includes: Obtain the temperature of the hairpin tube in the indoor heat exchanger; Preheating is completed when the temperature of the card issuing tube rises to the indoor temperature threshold.

7. A control device for noise reduction in 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 control method for noise reduction of an air conditioner as described in any one of claims 1 to 6.

8. An air conditioner, characterized in that, include: Outdoor unit; Indoor unit; and, The control device for noise reduction of an air conditioner as described in claim 7 is installed in the indoor unit.

9. A storage medium storing program instructions, characterized in that, When the program instructions are executed, they perform the control method for noise reduction of an air conditioner as described in any one of claims 1 to 6.

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