Air conditioner outdoor unit noise reduction method, controller, air conditioner, storage medium and program product

Abstract

The application provides an air conditioner outdoor unit noise reduction method, a controller, an air conditioner, a storage medium and a program product. The air conditioner outdoor unit noise reduction method comprises: determining whether the maximum operating noise Emax of the outdoor unit of the air conditioner is greater than at least one of the background noise A and a threshold F, and in the case that the maximum operating noise Emax of the outdoor unit is greater than at least one of the background noise A and the threshold F, determining whether the actual operating noise E of the outdoor unit is greater than the threshold F; in the case that the actual operating noise E of the outdoor unit is greater than the threshold F, adjusting the operating parameter of the outdoor unit so that the actual operating noise E of the outdoor unit is reduced to be less than or equal to the threshold F; wherein the threshold F is determined based on user demand or based on user demand and distance loss, and the distance loss is the loss of noise within the propagation distance from the outdoor unit to the indoor unit. In this way, the noise reduction effect and the air conditioning effect can be effectively considered.

Description

Technical Field

[0001] This application relates to the field of air conditioning noise reduction technology, and in particular to a noise reduction method for an air conditioning outdoor unit, a controller, an air conditioner, a storage medium, and a program product. Background Technology

[0002] Air conditioner outdoor units generate significant noise during operation, disrupting daily life. Therefore, it is necessary to reduce the noise of these units.

[0003] However, the noise reduction measures for outdoor units in related technologies either have poor noise reduction effects or require significant sacrifice of air conditioning effects (such as cooling and heating effects), and it is usually difficult to effectively balance noise reduction and air conditioning effects. Therefore, improvements are needed.

[0004] The above statements are for the purpose of providing background information in relation to this application only, and do not necessarily constitute prior art. Summary of the Invention

[0005] This application aims to provide a noise reduction method, controller, air conditioner, storage medium, and program product for an air conditioner outdoor unit, so as to effectively balance noise reduction and air conditioning effects.

[0006] To achieve the above objectives, the noise reduction method for air conditioner outdoor units provided in this application includes:

[0007] Determine whether the maximum operating noise Emax of the outdoor unit of the air conditioner is greater than at least one of the background noise A and the threshold F; and if the maximum operating noise Emax of the outdoor unit is greater than at least one of the background noise A and the threshold F, determine whether the actual operating noise E of the outdoor unit is greater than the threshold F.

[0008] If the actual operating noise E of the outdoor unit is greater than the threshold F, adjust the operating parameters of the outdoor unit so that the actual operating noise E is reduced to less than or equal to the threshold F.

[0009] The threshold F is determined based on user needs, or based on user needs and distance loss. E is determined, distance loss E represents the noise loss over the distance the noise travels from the outdoor unit to the indoor unit.

[0010] In some embodiments, determining whether the maximum operating noise Emax of the outdoor unit of the air conditioner is greater than at least one of the background noise A and the threshold F, and determining whether the actual operating noise E of the outdoor unit is greater than the threshold F when the maximum operating noise Emax of the outdoor unit is greater than at least one of the background noise A and the threshold F, includes:

[0011] Determine whether the maximum operating noise Emax of the outdoor unit is greater than the background noise A;

[0012] If the maximum operating noise Emax of the outdoor unit is greater than the background noise A, determine whether the maximum operating noise Emax of the outdoor unit is greater than the threshold F;

[0013] If the maximum operating noise Emax of the outdoor unit is greater than the threshold F, determine whether the actual operating noise E of the outdoor unit is greater than the threshold F.

[0014] In some embodiments, adjusting the operating parameters of the outdoor unit includes at least one of the following:

[0015] Adjust the operating parameters of the outdoor unit's fan;

[0016] Adjust the operating parameters of the outdoor unit's water pump;

[0017] Adjust the operating parameters of the outdoor unit's compressor.

[0018] In some embodiments, adjusting the operating parameters of the outdoor unit includes at least one of the following:

[0019] Adjusting the operating parameters of the outdoor unit's fan includes: reducing the fan frequency;

[0020] Adjusting the operating parameters of the outdoor unit's water pump includes: reducing the water pump speed;

[0021] Adjusting the operating parameters of the outdoor unit's compressor includes: reducing the compressor's frequency;

[0022] Adjust the operating parameters of at least one of the outdoor unit's fan and water pump, and then adjust the operating parameters of the outdoor unit's compressor.

[0023] In some embodiments, adjusting the operating parameters of the outdoor unit includes at least one of the following:

[0024] Reducing the frequency of the fan includes: when the actual operating noise B of the fan is greater than the threshold F, reducing the frequency of the fan so that the actual operating noise B of the fan is less than or equal to the threshold F;

[0025] Reducing the pump speed includes: when the actual operating noise D of the pump is greater than the threshold F, reducing the pump speed so that the actual operating noise D is less than or equal to the threshold F.

[0026] Reducing the compressor frequency includes: reducing the compressor frequency according to a preset amplitude P;

[0027] Reducing the compressor frequency includes: after reducing the compressor frequency once, at an interval t1, determining whether the actual operating noise E of the outdoor unit is greater than the threshold F, and if at an interval t1, the actual operating noise E of the outdoor unit is greater than the threshold F, reducing the compressor frequency again;

[0028] Adjusting the operating parameters of at least one of the outdoor unit's fan and water pump includes: first adjusting the operating parameters of the fan, and then adjusting the operating parameters of the water pump.

[0029] In some embodiments, adjusting the operating parameters of the fan first, and then adjusting the operating parameters of the water pump includes:

[0030] Determine whether the actual operating noise B of the fan is greater than the threshold F;

[0031] If the actual operating noise B of the fan is greater than the threshold F, adjust the operating parameters of the fan so that the actual operating noise B is less than or equal to the threshold F.

[0032] If the actual operating noise B of the fan is less than or equal to the threshold F, determine whether the actual operating noise D of the water pump is greater than the threshold F.

[0033] If the actual operating noise D of the water pump is greater than the threshold F, adjust the operating parameters of the water pump so that the actual operating noise D is less than or equal to the threshold F.

[0034] In some embodiments, the preset amplitude P is 1~10Hz; and / or t1 is 1~10min.

[0035] In some embodiments, the preset amplitude P is 2~10Hz; and / or t1 is 1~9min.

[0036] In some embodiments, the actual operating noise B of the fan is determined based on the correspondence between the actual operating frequency of the fan and the frequency noise of the fan; and / or, the actual operating noise D of the water pump is determined based on the correspondence between the actual operating speed of the water pump and the speed noise of the water pump.

[0037] In some embodiments, the frequency-noise correspondence of the fan is obtained by detecting the noise value of the fan at each frequency when only the fan is running in the outdoor unit; and / or, the noise correspondence of the water pump speed is obtained by detecting the noise value of the water pump at each speed when only the water pump is running in the outdoor unit.

[0038] In some embodiments, the noise reduction method for an air conditioner outdoor unit further includes:

[0039] After adjusting the operating parameters of the outdoor unit to reduce the actual operating noise E of the outdoor unit to less than or equal to the threshold F, at an interval of time t2, it is determined whether the actual operating noise E of the outdoor unit is greater than the threshold F.

[0040] If the actual operating noise E of the outdoor unit is greater than the threshold F at interval t2, the operating parameters of the outdoor unit are adjusted again so that the actual operating noise E of the outdoor unit is reduced to less than or equal to the threshold F.

[0041] In some embodiments, t2 is 10~30 min.

[0042] In some embodiments, the background noise A is determined based on the correspondence between the current time period of the outdoor unit and the noise level during that time period.

[0043] In some embodiments, the time-period noise correspondence is obtained by detecting the noise values ​​of each time period when the outdoor unit is in standby mode.

[0044] In addition, the controller provided in this application includes a memory and a processor coupled to the memory, the processor being configured to execute the air conditioner outdoor unit noise reduction method of any embodiment based on instructions stored in the memory.

[0045] In addition, the air conditioner provided in this application includes an outdoor unit and also includes a controller in any embodiment.

[0046] In addition, the computer-readable storage medium provided in this application stores computer instructions, which are executed by a processor using any embodiment of the air conditioner outdoor unit noise reduction method.

[0047] In addition, the computer program product provided in this application includes a computer program that, when executed by a processor, implements the noise reduction method for an air conditioner outdoor unit in any embodiment.

[0048] Before determining whether the actual operating noise E of the outdoor unit exceeds the threshold F and whether to adjust the outdoor unit parameters for noise reduction, the system first determines the relationship between the maximum operating noise Emax of the outdoor unit and at least one of the background noise A and the threshold F. Noise reduction is only applied to the outdoor unit if the maximum operating noise Emax exceeds the threshold F. Furthermore, the system adjusts the outdoor unit's operating parameters only if both the maximum operating noise Emax and the actual operating noise E exceed the threshold F. This effectively distinguishes between situations where noise reduction is needed and whether adjusting operating parameters will effectively reduce noise. This allows for a better noise reduction effect and improved user comfort when noise reduction is needed and adjusting operating parameters is effective. Conversely, it allows for a better air conditioning effect without limiting the outdoor unit's output when noise reduction is not needed or when adjusting operating parameters is ineffective. Therefore, it effectively balances noise reduction and air conditioning performance.

[0049] Other features and advantages of this application will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0050] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0051] Figure 1 This is a simplified structural diagram of the air conditioner in an embodiment of this application.

[0052] Figure 2 This is a logic block diagram of the noise reduction method for the outdoor unit of an air conditioner in the embodiments of this application.

[0053] Figure 3 This is a flowchart illustrating the noise reduction method for the outdoor unit of an air conditioner in this embodiment.

[0054] Figure 4 This is a flowchart illustrating the process of adjusting the operating parameters of the outdoor unit in an embodiment of this application.

[0055] Explanation of reference numerals in the attached figures:

[0056] 1. Outdoor unit; 2. Fan; 3. Water pump; 4. Compressor; 5. Buffer water tank; 6. Terminal; 7. First sensor; 8. Second sensor. Detailed Implementation

[0057] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. The described embodiments are only some embodiments of this application, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this application or its application or use.

[0058] In the description of this application, the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this application.

[0059] In the description of this application, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0060] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0061] As living standards improve, the term "noise pollution" has gradually come into the public eye, and many sectors need to control noise, including the air conditioning industry. Controlling noise is not only about meeting national standards for air conditioning, but more importantly, about creating a more livable environment and enhancing the user experience.

[0062] The outdoor unit is a major noise source for air conditioners. During operation, it generates significant noise, which not only affects the comfort of the outdoor environment but also enters the room, affecting the comfort of the indoor environment.

[0063] Among related technologies, the most common noise reduction measure for outdoor units is to install sound insulation materials such as sound-absorbing cotton at the outdoor unit, using physical noise reduction methods to reduce outdoor unit noise. This physical noise reduction method is a passive noise reduction method, and the noise reduction effect is not ideal. In particular, as time goes by, the sound insulation materials such as sound-absorbing cotton will have a decline in noise reduction performance due to aging and other reasons, so the noise reduction effect will become worse and worse.

[0064] To address the above situation, some related technologies reduce outdoor unit noise by adjusting the operating parameters of the outdoor unit. This parameter-adjustable outdoor unit noise reduction method, because it reduces noise at its source, is an active noise reduction method. Therefore, compared with the aforementioned physical noise reduction methods, it has a better noise reduction effect, and the noise reduction effect will not deteriorate due to factors such as aging of sound insulation components.

[0065] However, the parameter-adjustable outdoor unit noise reduction method in related technologies usually does not distinguish between situations. It adjusts the operating parameters of the outdoor unit to reduce the frequency of operation when the outdoor unit is noisy. Since the frequency reduction reduces the air conditioner's capacity output and affects the air conditioning effect, this noise reduction method usually sacrifices the air conditioning effect to a large extent.

[0066] It is evident that the noise reduction measures for outdoor units in related technologies either have poor noise reduction effects or require significant sacrifice of air conditioning effects, making it difficult to effectively balance noise reduction and air conditioning effects.

[0067] In view of the above situation, this application provides a noise reduction method for an air conditioner outdoor unit, a controller, an air conditioner, a storage medium, and a program product to effectively balance noise reduction and air conditioning effects.

[0068] Figure 1 An air conditioner of this application is shown as an example.

[0069] See Figure 1The air conditioner includes an outdoor unit 1. The outdoor unit 1 is located outdoors and works in conjunction with the indoor unit of the air conditioner to regulate indoor air. For example, it regulates the temperature of the indoor air to achieve cooling and heating functions, and it regulates the humidity of the indoor air to achieve dehumidification functions. Specifically, in some embodiments, the air conditioner is a heat pump air conditioner, which works in conjunction with a buffer water tank 5 located indoors to provide heating for underfloor heating or fan coil units.

[0070] See also Figure 1 In some embodiments, the outdoor unit 1 includes a fan 2, a water pump 3, and a compressor 4. During operation, the fan 2, water pump 3, and compressor 4 all generate noise, therefore, the outdoor unit 1 produces considerable noise. Typically, compared to other noise sources in the outdoor unit 1, the noise generated by the fan 2, water pump 3, and compressor 4 is greater; therefore, the fan 2, water pump 3, and compressor 4 are the main noise sources of the outdoor unit 1.

[0071] Furthermore, to facilitate the reduction of noise from outdoor unit 1 and to implement the air conditioner outdoor unit noise reduction method of this application mentioned below, see [link to relevant documentation]. Figure 1 In some embodiments, the air conditioner also includes a first sensor 7, which is disposed in the outdoor unit 1 for noise detection.

[0072] Specifically, in some embodiments, the first sensor 7 performs noise detection in real time during the operation of the outdoor unit 1 to obtain the actual operating noise E of the outdoor unit 1 in real time.

[0073] In addition, in some embodiments, the first sensor 7 also detects the maximum operating noise Emax of the outdoor unit 1. It can be understood that the maximum operating noise Emax of the outdoor unit 1 is the maximum value of the noise during the operation of the outdoor unit.

[0074] To facilitate use during noise reduction, the maximum operating noise Emax of outdoor unit 1 can be pre-detected and determined. For example, in some embodiments, the maximum operating noise Emax of outdoor unit 1 is obtained by detecting the operating noise of outdoor unit 1 using the first sensor 7 at the time the air conditioner leaves the factory. Specifically, in some embodiments, the operating noise of outdoor unit 1 is detected at the time the air conditioner leaves the factory, and the maximum decibel value in the detection result is determined as the maximum operating noise Emax of outdoor unit 1. Further, in some embodiments, the maximum operating noise Emax of outdoor unit 1 determined at the factory is optimized to obtain an optimized maximum operating noise Emax of outdoor unit 1. For example, in some embodiments, during actual operation after leaving the factory, if the actual operating noise E of outdoor unit 1 is greater than the maximum operating noise Emax determined at the factory, the larger actual operating noise is taken as the new maximum operating noise Emax, thereby continuously improving the data and obtaining a more accurate maximum operating noise Emax.

[0075] In some embodiments, the maximum operating noise Emax of the outdoor unit 1 is stored in the controller to form a data model of the maximum operating noise Emax of the outdoor unit, so that it can be automatically called during the noise reduction process, thereby realizing a more automated and intelligent noise reduction process and improving efficiency.

[0076] By detecting the maximum operating noise Emax of the outdoor unit and taking it into account during the noise reduction process, the accuracy of noise reduction can be improved, the impact of the noise reduction process on the air conditioning effect can be reduced, and the noise reduction effect and air conditioning effect can be effectively balanced. This point will be further explained later.

[0077] In addition, in some embodiments, the first sensor 7 also performs noise detection when the outdoor unit 1 is in standby mode (i.e., stopped and not running). When the outdoor unit 1 is in standby mode, the outdoor unit 1 is not running, the air conditioner has no output, and the outdoor unit operating noise is 0. The noise detected by the first sensor 7 is the sum of other noises in the environment where the outdoor unit 1 is located, excluding the outdoor unit operating noise, which can be called background noise (or environmental noise) A.

[0078] As can be seen, background noise A is the sum of all noises in the environment where outdoor unit 1 is located, excluding the operating noise of the outdoor unit. Background noise A can be obtained by detecting outdoor unit 1 when it is in standby mode (i.e., not running). Since the air conditioner has no output when outdoor unit 1 is in standby mode, background noise A can be obtained by detecting noise at outdoor unit 1 under the corresponding conditions.

[0079] By detecting background noise A and taking it into account during the outdoor unit noise reduction process, the accuracy of noise reduction can be improved, the impact of the noise reduction process on the air conditioning effect can be reduced, and the noise reduction effect and air conditioning effect can be effectively balanced. This point will be further explained later.

[0080] The background noise A varies at different times. For example, it is quieter at night than during the day, and quieter when cooking than when working from home, and so on. Therefore, in order to improve the accuracy of noise reduction, as will be mentioned below, in some embodiments, the background noise A used in the noise reduction method of the outdoor unit of the air conditioner is the background noise A of the current time period of the outdoor unit 1, so as to optimize the noise reduction control and capacity output control with the background noise values ​​of different time periods, and better balance the noise reduction effect and the air conditioning effect.

[0081] However, during air conditioner operation, it is impossible to stop outdoor unit 1 to detect the current background noise A. Therefore, determining the current background noise A is a challenge. To address this challenge, in some embodiments, with outdoor unit 1 stopped, the first sensor 7 is used to detect noise at various time periods to obtain the corresponding background noise values ​​for each time period, thus determining the time period noise correspondence (i.e., the correspondence between time periods and noise). In this way, by simply determining the current time period of outdoor unit 1 and then finding the corresponding noise value based on the time period noise correspondence, the background noise A for the current time period can be determined. This method is simple and convenient, effectively solving the problem of detecting the current background noise A. It also facilitates the optimization of noise reduction control and capacity output control using background noise values ​​from different time periods, better balancing noise reduction and air conditioning effects.

[0082] As can be seen, the background noise A can be predetermined. Specifically, the noise correspondence between time periods can be predetermined, and the background noise A can be determined based on the corresponding noise correspondence between time periods and the current time period of outdoor unit 1.

[0083] In some embodiments, the pre-determined noise correspondence for different time periods is stored in the controller, forming a noise correspondence data model for different time periods, which can be automatically called during the noise reduction process to achieve a more automated and intelligent noise reduction process and improve efficiency.

[0084] In addition, in some embodiments, the first sensor 7 also detects the noise of the fan 2, water pump 3, and compressor 4 to obtain their noise levels for noise reduction. Since the first sensor 7 can only detect the overall noise of the outdoor unit 1 during operation, the noise from the fan 2, water pump 3, and compressor 4 is mixed together and difficult to distinguish. Therefore, determining the actual operating noise of the fan 2, water pump 3, and compressor 4 is also a challenge. To solve this problem, in some embodiments, noise detection is performed beforehand with only the fan 2, water pump 3, and compressor 4 running on the outdoor unit 1. The correspondence between the noise of each fan 2, water pump 3, and compressor 4 and their operating parameters is obtained. Then, based on the corresponding correspondence and the actual operating parameters of the fan 2, water pump 3, and compressor 4 during actual operation, the actual operating noise of each fan 2, water pump 3, and compressor 4 is determined.

[0085] For example, in some embodiments, to determine the actual operating noise B of the fan 2, a fan frequency-noise correspondence (i.e., the correspondence between the frequency of the fan 2 and the noise) is predetermined. Then, based on the corresponding fan frequency-noise correspondence and the actual operating frequency of the fan 2, the actual operating noise B of the fan 2 is determined. Specifically, in some embodiments, with only the fan 2 running on the outdoor unit 1, the noise values ​​of the fan 2 at various frequencies are detected using the first sensor 7 and recorded to obtain the fan frequency-noise correspondence. Then, during the noise reduction process, it is only necessary to determine the actual operating frequency of the fan 2, and then find the corresponding fan noise value at the current fan frequency based on the predetermined fan frequency-noise correspondence, thus determining the actual operating noise B of the fan 2. This is simple and convenient, and can effectively solve the problem of detecting the actual operating noise B of the fan. The predetermined fan frequency-noise correspondence can be stored in the controller to form a fan frequency-noise correspondence data model, which can be automatically called during the noise reduction process to achieve a more automated and intelligent noise reduction process and improve efficiency.

[0086] For example, in some embodiments, to determine the actual operating noise D of the water pump 3, a pre-determined correspondence between water pump speed and noise levels (i.e., the correspondence between the speed of the water pump 3 and the noise level) is established. Then, based on this correspondence and the actual operating speed of the water pump 3, the actual operating noise D of the water pump 3 is determined. Specifically, in some embodiments, with only the water pump 3 running on the outdoor unit 1, the noise values ​​of the water pump 3 at each speed are detected using the first sensor 7 and recorded to obtain the water pump speed noise correspondence. Then, during noise reduction, it is only necessary to determine the actual operating speed of the water pump 3, and based on the pre-determined correspondence, find the corresponding water pump noise value at the current speed to determine the actual operating noise D of the water pump 3. This is simple and convenient, effectively solving the problem of detecting the actual operating noise D of the water pump. The pre-determined water pump speed noise correspondence can be stored in the controller, forming a water pump speed noise correspondence data model, which can be automatically called during the noise reduction process, achieving a more automated and intelligent noise reduction process and improving efficiency.

[0087] For example, in some embodiments, to determine the actual operating noise C of compressor 4, a compressor frequency-noise correspondence (i.e., the correspondence between the frequency of compressor 4 and the noise) is predetermined. Then, based on the corresponding compressor frequency-noise correspondence and the actual operating frequency of compressor 4, the actual operating noise of compressor 4 is determined. Specifically, in some embodiments, with only compressor 4 running on outdoor unit 1, the noise values ​​of compressor 4 at various frequencies are detected using the first sensor 7 and recorded to obtain the compressor frequency-noise correspondence. Then, during the noise reduction process, it is only necessary to determine the actual operating frequency of compressor 4, and then find the compressor noise value corresponding to the current compressor frequency based on the predetermined compressor frequency-noise correspondence to determine the actual operating noise of compressor 4. This is simple and convenient, and can effectively solve the problem of detecting the actual operating frequency of compressors. The predetermined compressor frequency-noise correspondence can be stored in the controller to form a compressor frequency-noise correspondence data model, which can be automatically called during the noise reduction process to achieve a more automated and intelligent noise reduction process and improve efficiency.

[0088] As can be seen, based on the first sensor 7, the actual operating noise E of the outdoor unit, the maximum operating noise Emax of the outdoor unit, the background noise A, the actual operating noise B of the fan, the actual operating noise D of the water pump, and the actual operating noise C of the compressor can be detected and determined. Reducing the noise of the outdoor unit based on these parameters is conducive to achieving a more accurate and effective noise reduction process, effectively balancing the noise reduction effect and the air conditioning effect.

[0089] Additionally, see Figure 1 In some embodiments, a second sensor 8 is provided on the indoor side for detecting indoor noise G. Specifically, in some embodiments, the second sensor 8 is located at the indoor unit to detect indoor noise G.

[0090] Setting up a second sensor 8 to detect indoor noise G is beneficial for correcting the operating noise of the outdoor unit, and in particular, it is beneficial for utilizing distance loss. E corrects the operating noise of the outdoor unit, improves the accuracy of outdoor unit noise control, and prevents excessive sacrifice of air conditioning capacity output, which would affect the air conditioning effect. This point will be explained further later.

[0091] In order to reduce the noise of outdoor unit 1, and especially in order to effectively reduce the noise of outdoor unit 1 while taking into account the air conditioning effect, this application provides a noise reduction method for air conditioning outdoor unit.

[0092] Figures 2-4 An exemplary method for noise reduction of an air conditioner outdoor unit according to this application is shown.

[0093] See Figures 2-4 In this application, the noise reduction method for the outdoor unit of an air conditioner includes:

[0094] S100. Determine whether the maximum operating noise Emax of the outdoor unit 1 of the air conditioner is greater than at least one of the background noise A and the threshold F. If the maximum operating noise Emax of the outdoor unit 1 is greater than at least one of the background noise A and the threshold F, determine whether the actual operating noise E of the outdoor unit 1 is greater than the threshold F.

[0095] S200. When the actual operating noise E of the outdoor unit 1 is greater than the threshold F, adjust the operating parameters of the outdoor unit 1 so that the actual operating noise E of the outdoor unit 1 is reduced to less than or equal to the threshold F.

[0096] Based on the above steps S100 and S200, this application adopts a parameter-adjustable noise reduction method in the process of reducing noise from the outdoor unit. This method can actively reduce noise from the source of outdoor unit noise, and the noise reduction effect is not affected by the increase of time or the aging of sound insulation components. Therefore, it can achieve a more durable and effective noise reduction effect.

[0097] Furthermore, the parameter-adjustable noise reduction method adopted in this application differs from that in related technologies. During the noise reduction process for the external unit 1, it no longer indiscriminately reduces the frequency of the external unit when the noise is high. Instead, it introduces parameters such as the maximum operating noise Emax of the external unit, the background noise A, and the threshold F. Based on these parameters, it judges the actual situation by considering the relationship between the maximum operating noise Emax and at least one of the background noise A and the threshold F. This ensures that the actual operation of the external unit 1 is only judged when the maximum operating noise Emax is greater than at least one of the background noise A and the threshold F. The system determines whether the outdoor unit's maximum operating noise E is greater than the threshold F. Noise reduction is only implemented when the outdoor unit's maximum operating noise Emax is greater than at least one of the background noise A and the threshold F, and the actual operating noise E of the outdoor unit 1 is greater than the threshold F. This ensures that noise reduction is only implemented when it is necessary and adjusting the operating parameters is effective. Conversely, if noise reduction is not needed or cannot be effectively reduced by adjusting the operating parameters, no adjustment is made. This achieves both good noise reduction and improved user comfort while preventing excessive sacrifice of air conditioning performance, effectively balancing noise reduction with air conditioning performance.

[0098] Among them, the meanings of the maximum operating noise Emax and the background noise A have been introduced before, so they will not be elaborated here. The meaning of the threshold F can also be understood as the upper limit value that the preset outdoor unit operating noise meets the requirements. When the actual operating noise E of the outdoor unit 1 is less than or equal to this threshold F, the noise level of the outdoor unit 1 is relatively appropriate and the user experience is relatively comfortable. When the actual operating noise E of the outdoor unit 1 is greater than this threshold F, the noise of the outdoor unit 1 is too large, which will reduce the user comfort. That is to say, the condition for the outdoor unit operating noise to meet the requirements is less than or equal to the threshold F, that is, E≤F. When the outdoor unit operating noise is greater than the threshold F, that is, when E>F, noise reduction is carried out to improve the user comfort.

[0099] Among them, whether the maximum operating noise Emax of the outdoor unit 1 is greater than the background noise A can reflect whether adjusting the operating parameters of the outdoor unit can effectively reduce noise. Specifically, when the maximum operating noise Emax of the outdoor unit 1 is greater than the background noise A, that is, when Emax>A, it means that the background noise A is smaller than the maximum operating noise Emax of the outdoor unit. In this case, adjusting the parameters of the outdoor unit 1 can effectively reduce the noise of the outdoor unit. When the maximum operating noise Emax of the outdoor unit 1 is less than or equal to the background noise A, that is, when Emax≤A, it means that the background noise A is even greater than the maximum operating noise Emax of the outdoor unit. In this case, even if the operating parameters of the outdoor unit 1 are adjusted, it is difficult to effectively reduce noise, or rather, no matter how the operating parameters of the outdoor unit are adjusted, it is impossible to effectively reduce noise and meet the requirements (F<A). Therefore, in the corresponding cases, the size relationship between the actual operating noise E of the outdoor unit and the threshold F is not judged, and the outdoor unit 1 is not noise-reduced, so that the outdoor unit 1 can operate normally according to the air conditioning demand, output a higher capacity, effectively meet the air conditioning demand, and achieve a better air conditioning effect.

[0100] It can be seen that before judging whether the actual operating noise of the outdoor unit is greater than the threshold F, first judging whether the maximum operating noise Emax of the outdoor unit is greater than the background noise A can effectively distinguish different situations of whether adjusting the operating parameters of the outdoor unit can effectively reduce noise, so that in the case where adjusting the operating parameters cannot effectively reduce noise at all, instead of reducing noise by restricting the capacity output, the load demand is directly prioritized. In this way, it can prevent the air conditioning effect from being affected due to restricting the output for noise reduction even when adjusting the operating parameters cannot effectively reduce noise at all. Therefore, the noise reduction effect and the air conditioning effect can be effectively balanced.

[0101] Furthermore, whether the maximum operating noise Emax of outdoor unit 1 is greater than the threshold F reflects whether noise reduction is needed. Specifically, when the maximum operating noise Emax of outdoor unit 1 is greater than the threshold F, that is, when Emax>F, it means that the actual operating noise E of outdoor unit 1 may exceed the threshold F. In this case, it is necessary to further determine whether the actual operating noise E of outdoor unit 1 is greater than the threshold F and to perform noise reduction control on the outdoor unit. However, when the maximum operating noise Emax of outdoor unit 1 is less than or equal to the threshold F, that is, when Emax≤F, it means that the maximum operating noise Emax of the outdoor unit does not exceed the threshold F. Therefore, the actual operating noise of the outdoor unit is unlikely to exceed the threshold F, and the overall noise of the outdoor unit is sufficient to meet the requirements. No noise reduction is needed. Therefore, in the corresponding cases, the relationship between the actual operating noise E of the outdoor unit and the threshold F is not judged, and noise reduction of outdoor unit 1 is not performed. This allows outdoor unit 1 to operate normally according to the air conditioning requirements, output higher capacity, effectively meet the air conditioning requirements, and achieve better air conditioning effects.

[0102] It is evident that before determining whether the actual operating noise of the outdoor unit exceeds the threshold F, it is necessary to first determine whether the maximum operating noise Emax of the outdoor unit exceeds the threshold F. This allows for effective differentiation between different situations where noise reduction is required. In cases where noise reduction is anticipated to be unnecessary, output noise reduction can be implemented without limiting it, and load demand can be prioritized. This prevents the air conditioning effect from being affected by limiting output noise reduction even when it is not required. Therefore, it can effectively balance noise reduction and air conditioning effects.

[0103] Furthermore, by determining whether the maximum operating noise Emax of the outdoor unit is greater than the threshold F, it is possible to predict whether the actual operating noise is likely to be greater than the threshold F. This allows for a more proactive differentiation of different situations where noise reduction is required. In cases where it is predicted that the actual operating noise is unlikely to be greater than the threshold F, the relationship between the actual operating noise and the threshold F can be eliminated, thus simplifying control and improving efficiency.

[0104] In summary, steps S100 and S200, before determining whether the actual operating noise E of the outdoor unit is greater than the threshold F and whether to adjust the outdoor unit parameters for noise reduction, first determine the relationship between the maximum operating noise Emax of the outdoor unit and at least one of the background noise A and the threshold F. Only if the maximum operating noise Emax of the outdoor unit is greater than at least one of the background noise A and the threshold F, is it determined whether the actual operating noise E of the outdoor unit 1 is greater than the threshold F. Only if the maximum operating noise Emax of the outdoor unit is greater than at least one of the background noise A and the threshold F, and the actual operating noise E of the outdoor unit 1 is greater than the threshold F, are the operating parameters of the outdoor unit 1 adjusted to reduce noise. This allows for the determination of whether noise reduction is needed and whether adjusting the operating parameters is feasible. The method effectively distinguishes between different noise reduction scenarios, ensuring that noise reduction is only implemented when it is necessary and adjusting the operating parameters is effective. Noise reduction is not implemented when it is not needed or when adjusting the operating parameters is ineffective. This approach achieves good noise reduction and improves user comfort when noise reduction is needed and effective, while maintaining good air conditioning performance without limiting the output of outdoor unit 1 when noise reduction is not needed or when adjusting the operating parameters is ineffective. Therefore, the corresponding air conditioner outdoor unit noise reduction method effectively balances noise reduction and air conditioning effects, achieving good noise reduction while effectively balancing air conditioning performance.

[0105] In step S100, the relationship between the maximum operating noise Emax of the outdoor unit and either the background noise A or the threshold F can be determined. Specifically, the relationship between the maximum operating noise Emax of the outdoor unit and the background noise A can be determined alone, or the relationship between the maximum operating noise Emax of the outdoor unit and the threshold F can be determined alone. Alternatively, the relationship between the maximum operating noise Emax of the outdoor unit and the background noise A and the threshold F can be determined simultaneously. When both the relationship between the maximum operating noise Emax of the outdoor unit and the background noise A and the threshold F are determined, it is possible to more fully distinguish between different situations where noise reduction is needed and whether adjusting the operating parameters can effectively reduce noise. Therefore, it is beneficial to better balance noise reduction and air conditioning effects.

[0106] When determining both the relationship between the maximum operating noise Emax of the outdoor unit and the background noise A, and the relationship between the maximum operating noise Emax of the outdoor unit and the threshold F, the two conditions can be determined simultaneously or sequentially.

[0107] For example, see Figure 3In some embodiments, step S100 further includes:

[0108] Determine whether the maximum operating noise Emax of outdoor unit 1 is greater than the background noise A;

[0109] If the maximum operating noise Emax of outdoor unit 1 is greater than the background noise A, determine whether the maximum operating noise Emax of outdoor unit 1 is greater than the threshold F;

[0110] If the maximum operating noise Emax of outdoor unit 1 is greater than the threshold F, determine whether the actual operating noise E of outdoor unit 1 is greater than the threshold F.

[0111] The above method ensures that in step S100, both the relationship between the maximum operating noise Emax of the outdoor unit and the background noise A, and the relationship between the maximum operating noise Emax of the outdoor unit and the threshold F are determined. Furthermore, the two conditions are determined sequentially: first, the relationship between the maximum operating noise Emax of the outdoor unit and the background noise A is determined, and then the relationship between the maximum operating noise Emax of the outdoor unit and the threshold F is determined. The determination of whether the maximum operating noise Emax of the outdoor unit is greater than the background noise A is only made if the maximum operating noise Emax of the outdoor unit is greater than the background noise A. If the maximum operating noise Emax of the outdoor unit is less than or equal to the background noise A, the determination of the relationship between the maximum operating noise Emax of the outdoor unit and the threshold F is not made. This allows for the elimination of the need to predict whether the actual operating noise might exceed the threshold F when adjusting operating parameters fails to effectively reduce the outdoor unit noise. Thus, the noise reduction method for air conditioning outdoor units can be further optimized, the control process simplified, and efficiency improved.

[0112] In step S200, the operating parameters of the outdoor unit 1 that are adjusted can be varied. See, for example... Figure 4 In step S200, the operating parameters of the outdoor unit 1 that are adjusted include at least one of the operating parameters of the fan 2, the water pump 3 and the compressor 4. That is, adjusting the operating parameters of the outdoor unit 1 in step S200 includes adjusting at least one of the operating parameters of the fan 2 of the outdoor unit 1, adjusting the operating parameters of the water pump 3 of the outdoor unit 1 and adjusting the operating parameters of the compressor 4 of the outdoor unit 1.

[0113] As mentioned above, the fan 2, water pump 3, and compressor 4 are the main noise sources of the outdoor unit 1. Therefore, adjusting the operating parameters of at least one of the fan 2, water pump 3, and compressor 4 can effectively reduce the noise of the outdoor unit 1 and achieve a better noise reduction effect.

[0114] For fan 2, water pump 3, and compressor 4, the noise levels generated during actual operation vary, resulting in different impacts on the noise of the external unit. Generally speaking, compressor 4 has the greatest impact, fan 2 is moderately affected, and water pump 3 has the least impact. In this case, the specific choice of which of the three components to adjust during noise reduction, and the order in which to adjust multiple components, significantly affects the noise reduction and air conditioning effects.

[0115] To achieve better noise reduction, in some embodiments, step S200, adjusting the operating parameters of the outdoor unit 1 includes not only adjusting the operating parameters of the compressor 4, but also adjusting the operating parameters of at least one of the fan 2 and the water pump 3. This provides more diverse adjustment methods. When noise reduction is required by adjusting operating parameters, noise can be reduced not only by adjusting the compressor parameters, but also by adjusting the fan and / or water pump parameters. This allows for the determination of a more suitable parameter adjustment strategy based on the actual situation, achieving better noise reduction while effectively balancing air conditioning performance. Therefore, it is beneficial to better balance noise reduction and air conditioning performance.

[0116] When adjusting the operating parameters of outdoor unit 1, which includes not only adjusting the operating parameters of compressor 4 but also adjusting the operating parameters of at least one of fan 2 and water pump 3, the operating parameters of at least one of fan 2 and water pump 3 and compressor 4 can be adjusted simultaneously, or the operating parameters of at least one of fan 2 and water pump 3 and compressor 4 can be adjusted sequentially. Specifically, when adjusting the operating parameters of at least one of fan 2 and water pump 3 and compressor 4 sequentially, it is not necessary to adjust at least one of compressor 4, fan 2, and water pump 3 every time the outdoor unit noise is reduced to the required level (i.e., less than or equal to threshold F). Instead, the subsequent adjustment is only performed if the outdoor unit noise cannot be reduced to the required level after the first adjustment. This makes the noise reduction process simpler and more reasonable, and can more effectively balance noise reduction and air conditioning effects.

[0117] For example, see Figure 4 In some embodiments, step S200, adjusting the operating parameters of the outdoor unit 1 includes:

[0118] Adjust the operating parameters of at least one of the fans 2 and the water pump 3, and then adjust the operating parameters of the compressor 4 of the outdoor unit 1.

[0119] The above method involves first adjusting at least one of the fan 2 and water pump 3, and then adjusting the compressor 4 to reduce noise. This means that the compressor 4 doesn't necessarily need to be adjusted every time the outdoor unit noise is reduced to the required level (i.e., less than or equal to the threshold F). Instead, the compressor 4 is only adjusted if adjusting at least one of the fan 2 and water pump 3 fails to reduce the outdoor unit noise to the required level.

[0120] Although compressor 4 is the main noise source of outdoor unit 1, its operating range is very large, for example, the frequency range is 0~120Hz, and the noise of compressor is greatly affected by ambient temperature and water temperature, making it more difficult to adjust and more uncertain in the adjustment effect. In contrast, fan 2 and water pump 3 have relatively small operating ranges, and the environmental conditions have less impact on the noise values ​​of fan 2 and water pump 3, making them easier to adjust and more certain in the adjustment effect. Therefore, adjusting at least one of fan 2 and water pump 3 first to limit the noise of at least one of them, and then deciding whether to adjust the compressor based on the adjustment effect, can achieve a simpler and more reasonable adjustment process and improve the noise control level.

[0121] Moreover, since adjusting compressor 4 has a greater impact on capacity output, compressor 4 is only adjusted if adjusting at least one of the fan 2 and water pump 3 still fails to meet the noise requirements. If adjusting at least one of the fan 2 and water pump 3 has met the noise requirements, compressor 4 is no longer adjusted. This can effectively reduce the adverse effects of adjusting the compressor on the air conditioning effect, achieving a good noise reduction effect while effectively taking into account the air conditioning effect.

[0122] In addition, since the adjustment of at least one of the fans 2 and water pumps 3 is not carried out simultaneously with the adjustment of the compressor 4, the effects of adjusting at least one of the fans 2 and water pumps 3 on noise and the effects of adjusting the compressor 4 on noise are not coupled together, but are separate from each other, which makes it easier to distinguish them. Therefore, it is easier to reasonably determine the adjustment effect of each adjustment and the adjustment strategy of each parameter, effectively simplifying the adjustment process and improving the adjustment accuracy.

[0123] It is evident that by first adjusting at least one of the fan 2 and water pump 3, and then adjusting the compressor 4, the noise of the outdoor unit 1 can be reduced. This allows for a simpler and more reasonable adjustment process, and can more effectively balance noise reduction and air conditioning effects.

[0124] The adjustment can be made to at least one of the fans 2 and the water pump 3. This can be done by adjusting only one of the fans 2 and the water pump 3, or by adjusting both of the fans 2 and the water pump 3. When both the fans 2 and the water pump 3 are adjusted, it means that all three main noise sources of the outdoor unit 1 can be adjusted during the noise reduction process, providing a wider range of noise reduction methods and facilitating a better noise reduction effect. Moreover, noise can be reduced by adjusting the fans 2 and the water pump 3 before adjusting the compressor 4, which is more conducive to meeting the noise requirements of the outdoor unit without adjusting the compressor. This achieves a good noise reduction effect while effectively maintaining the air conditioning effect.

[0125] When both the fan 2 and the water pump 3 are adjusted, the adjustments to the fan 2 and the water pump 3 can be performed simultaneously or sequentially. For example, in some embodiments, adjusting the operating parameters of at least one of the fan 2 and the water pump 3 includes:

[0126] First adjust the operating parameters of fan 2, then adjust the operating parameters of water pump 3.

[0127] The above method uses a sequential adjustment of fan 2, then water pump 3, and finally compressor 4 to reduce noise. This avoids the need to adjust both fan 2 and water pump 3 every time compressor 4 needs adjustment. Instead, water pump 3 can be adjusted only when adjusting fan 2 fails to meet the requirements. This fan-first-then-water-pump adjustment sequence aligns with the fact that fans have a greater noise impact than water pumps, making the adjustment process simpler and more reasonable, and achieving better adjustment results.

[0128] Specifically, in some embodiments, adjusting the operating parameters of the fan 2 first, and then adjusting the operating parameters of the water pump 3 includes:

[0129] Determine whether the actual operating noise B of fan 2 is greater than the threshold F;

[0130] If the actual operating noise B of fan 2 is greater than the threshold F, adjust the operating parameters of fan 2 so that the actual operating noise B of fan 2 is less than or equal to the threshold F.

[0131] If the actual operating noise B of the fan 2 is less than or equal to the threshold F, determine whether the actual operating noise D of the water pump 3 is greater than the threshold F.

[0132] If the actual operating noise D of water pump 3 is greater than the threshold F, adjust the operating parameters of water pump 3 so that the actual operating noise D of water pump 3 is less than or equal to the threshold F.

[0133] In the above method, when E>F, not only are the parameters of fan 2 and water pump 3 adjusted in the order of fan first and then water pump, but during the adjustment of fan 2 and water pump 3, whether their actual operating noise value is greater than the threshold F is used as the condition for starting the corresponding adjustment, and whether their actual operating noise value is less than or equal to the threshold F is used as the condition for ending the corresponding adjustment and starting the adjustment of the next noise source. In this way, the adjustment process is more reasonable and feasible, which can effectively control the noise output level of the outdoor unit and improve user comfort.

[0134] The operating parameters of fan 2 can include its frequency. Correspondingly, adjusting the operating parameters of fan 2 in outdoor unit 1 can include reducing its frequency. The frequency of fan 2 is a crucial factor affecting its noise level; a higher frequency results in greater noise, while a lower frequency results in lower noise. Therefore, reducing the frequency of fan 2 effectively reduces its operating noise, thereby effectively reducing the operating noise of outdoor unit 1 and achieving a better noise reduction effect.

[0135] Specifically, see Figure 4 In some embodiments, reducing the frequency of the fan 2 includes: when the actual operating noise B of the fan 2 is greater than a threshold F, reducing the frequency of the fan 2 so that the actual operating noise B of the fan 2 is less than or equal to the threshold F. Thus, in step S200, by limiting the frequency of the fan 2 to make the actual operating noise B of the fan 2 less than or equal to the threshold F, the overall noise of the outdoor unit can be effectively reduced. As mentioned above, the actual operating noise B of the fan 2 can be determined based on the actual operating frequency of the fan 2 and the frequency-noise correspondence, which will not be elaborated further here.

[0136] In addition, the operating parameters of water pump 3 can include the speed setting of water pump 3. Correspondingly, adjusting the operating parameters of water pump 3 in outdoor unit 1 can include reducing the speed setting of water pump 3. The speed setting of water pump 3 is an important factor affecting the noise level of water pump 3. The higher the speed setting of water pump 3, the louder the noise of water pump 3; the lower the speed setting of water pump 3, the quieter the noise of water pump 3. Therefore, by reducing the speed setting of water pump 3, the operating noise of water pump 3 can be effectively reduced, thereby effectively reducing the operating noise of outdoor unit 1 and achieving a better noise reduction effect.

[0137] Specifically, see Figure 4Reducing the speed of water pump 3 includes: when the actual operating noise D of water pump 3 is greater than the threshold F, reducing the speed of water pump 3 so that the actual operating noise D of water pump 3 is less than or equal to the threshold F. Thus, in step S200, by limiting the speed of water pump 3 to make the actual operating noise D of water pump 3 less than or equal to the threshold F, the overall noise of the outdoor unit can be effectively reduced. As mentioned above, the actual operating noise D of water pump 3 can be determined based on the actual operating speed of water pump 3 and the corresponding relationship between water pump speed noise, which will not be elaborated here.

[0138] Furthermore, the operating parameters of compressor 4 may include frequency. Accordingly, adjusting the operating parameters of compressor 4 of outdoor unit 1 may include reducing the frequency of compressor 4. The frequency of compressor 4 is an important factor affecting the noise level of compressor 4. The higher the frequency of compressor 4, the greater the noise of compressor 4, and the lower the frequency of compressor 4, the lower the noise of compressor 4. Therefore, by reducing the frequency of compressor 4, the operating noise of compressor 4 can be effectively reduced, thereby effectively reducing the operating noise of outdoor unit 1 and achieving a better noise reduction effect.

[0139] During the process of reducing the frequency of compressor 4, the frequency of compressor 4 can be reduced by a preset amount P. That is, each time the frequency of compressor 4 is reduced, the frequency of compressor 4 is reduced by the preset amount P. In this way, the compressor frequency is reduced by the same amount each time, which can effectively reduce compressor noise and achieve a better noise reduction effect of the outdoor unit. It can also achieve a more regular compressor frequency reduction process, effectively reducing the difficulty of compressor frequency reduction and simplifying the compressor frequency reduction process.

[0140] The preset amplitude P can be pre-set, and its specific value can be set according to actual conditions. As an example, the preset amplitude is 1~10Hz, such as 2~10Hz, specifically 2 Hz, 3 Hz, 4 Hz, 5 Hz, 6 Hz, 7 Hz, 8 Hz, 9 Hz, or 10 Hz. In this way, the preset amplitude P is more appropriate. By reducing the compressor frequency according to the corresponding preset amplitude P, the noise intensity can be effectively reduced, while preventing the compressor from reducing the frequency too much at once, which would affect the overall capacity output and the air conditioning effect. Thus, it can effectively balance noise reduction and air conditioning effect.

[0141] It is understandable that in step S200, after each adjustment of operating parameters such as compressor frequency, the actual operating noise E of outdoor unit 1 must be detected again, and it must be determined whether the actual operating noise E of outdoor unit 1 is less than or equal to the threshold F after this adjustment. If it is less than or equal to the threshold F, no further adjustment is made. If it is still greater than the threshold F, the adjustment continues until the actual operating noise E of outdoor unit 1 is less than or equal to the threshold F.

[0142] The system allows for immediate detection and assessment of actual operating noise levels after each parameter adjustment, ensuring compliance with requirements. Alternatively, a time interval can be maintained before testing and assessment. Allowing time for noise changes after parameter adjustments allows the impact of these adjustments to be fully realized, resulting in more stable and accurate outdoor unit operating noise readings. This prevents inaccurate detection and assessment, avoiding over- or under-adjustment, and ultimately achieving a more accurate and reliable noise reduction process, effectively balancing noise reduction and air conditioning performance.

[0143] For example, in some embodiments, reducing the frequency of compressor 4 includes: after reducing the frequency of compressor 4 once, at an interval t1, determining whether the actual operating noise E of outdoor unit 1 is greater than the threshold F, and if, at the interval t1, the actual operating noise E of outdoor unit 1 is greater than the threshold F, reducing the frequency of compressor 4 again. Based on this, after each adjustment of the compressor frequency, E and F are not immediately detected and determined, but rather after an interval t1. This allows time for the noise change after the compressor frequency is reduced, making the actual operating noise of the outdoor unit obtained after re-detection more stable and accurate. This effectively prevents the compressor from being over-reduced or under-reduced due to inaccurate detection and determination. Therefore, a more accurate and reliable noise reduction process can be achieved, more effectively balancing noise reduction and air conditioning effects.

[0144] The value of t1 can be preset, and its specific value can be set according to the actual situation. For example, t1 can be 1~10min, such as 1~9min, specifically 1 min, 2 min, 3 min, 4 min, 5 min, 6 min, 7 min, 8 min, or 9 min. In this case, the value of t1 is more appropriate, which can obtain a more stable and accurate outdoor unit noise value after each compressor frequency reduction, and can also prevent the interval time from being too long, which would affect the noise reduction efficiency and effect. This can achieve a more accurate and reliable noise reduction process, and more effectively balance the noise reduction effect and the air conditioning effect.

[0145] As a further improvement to the foregoing embodiments, see Figure 2 and Figure 4 Noise reduction methods for air conditioner outdoor units also include:

[0146] S300. After adjusting the operating parameters of outdoor unit 1 to reduce the actual operating noise E of outdoor unit 1 to less than or equal to the threshold F, at an interval of time t2, determine whether the actual operating noise E of outdoor unit 1 is greater than the threshold F.

[0147] S400. If the actual operating noise E of outdoor unit 1 is greater than the threshold F at interval t2, adjust the operating parameters of outdoor unit 1 again so that the actual operating noise E of outdoor unit 1 is reduced to less than or equal to the threshold F.

[0148] The above steps S300 and S400 ensure that after reducing the actual operating noise of the outdoor unit to less than or equal to the threshold F in step S200, the noise reduction does not stop directly. Instead, after an interval of time t2, the actual noise of the outdoor unit is detected and judged again to see if it meets the requirements. If the actual noise of the outdoor unit does not meet the requirements after the interval of time t2, step S200 is repeated to reduce noise again. This prevents the noise from exceeding the standard again within the time interval t2, which would affect the user's comfort. Therefore, a more reliable noise reduction process can be achieved, noise comfort can be improved more effectively, and the user's noise reduction needs can be better met.

[0149] The value of t2 can be preset, and its specific value can be set according to the actual situation. For example, t2 can be 10~30 min, such as 10 min, 12 min, 14 min, 15 min, 18 min, 20 min, 22 min, 24 min, 25 min, 26 min, 28 min, or 30 min. In this way, the value of t2 is more suitable, which can obtain a more stable and accurate noise value after each execution of step S200, and can also prevent the interval time from being too long, which would affect the noise reduction efficiency and effect. This can achieve a more accurate and reliable noise reduction process, and more effectively balance the noise reduction effect and the air conditioning effect.

[0150] In the foregoing embodiments, the threshold F can be preset. For example, in some embodiments, the threshold F is determined based on user needs, or based on user needs and distance loss. E is confirmed.

[0151] The user's demand can reflect the upper limit of noise that the user can tolerate (referred to as the comfort noise level Fs), which can be determined based on user settings or automatically by a data model. For example, in some embodiments, the user sets the comfort noise level Fs to 40 dB (decibels) by inputting it on the air conditioner remote control; this comfort noise level Fs can then be used as the user's demand. In another embodiment, the controller stores a comfort noise data model; during operation, the controller automatically determines the current comfort noise level Fs based on the corresponding comfort noise data model, and the determined comfort noise level Fs can then be used as the user's demand.

[0152] Whether the threshold F is determined based on user needs, or based on user needs and distance loss... The determination of threshold F by E implies that user needs were taken into account. Since user needs reflect the level of comfortable noise that users desire, considering user needs when determining threshold F can reduce outdoor unit noise to a level that meets user requirements, effectively improving the user experience.

[0153] Distance loss This refers to the noise loss due to distance; specifically, it refers to the noise loss over the propagation distance from the outdoor unit 1 to the indoor unit. Noise level is directly related to the propagation distance. The installation location of the outdoor unit affects the noise level after it enters the room; the farther the installation location, the lower the decibel value of the noise entering the room. It's easy to understand that the actual operating noise E of the outdoor unit and the distance loss... The relationship between E and indoor noise G is: G = E - E. Indoor noise G can be detected at the indoor unit. In particular, indoor noise G can be detected at the indoor unit when the difference between indoor and outdoor background noise is small. In this way, the detected indoor noise G is less affected by other interferences and more closely approximates the true value of the outdoor unit noise after it propagates into the room. Based on the corresponding G value, distance loss can be determined more accurately. E.

[0154] Based on user needs and distance loss Determining the threshold F using E means that, when determining the threshold F, not only the desired level of comfort noise Fs is considered, but also the noise loss from the outdoor unit's noise transmission to the indoor environment. This allows for the utilization of distance loss. E can correct for external unit noise, for example, by utilizing distance loss. E modifies the noise requirement condition E≤Fs to E- E≤Fs, that is, E≤Fs+ E, thus obtaining the threshold F as the comfort noise Fs and distance loss. The sum of E, that is, F = Fs + E. In this way, a more accurate threshold F can be obtained, which can better optimize the outdoor unit noise control and prevent the neglect of distance loss. E, which leads to a smaller threshold F, excessive noise reduction, resulting in excessive reduction of air conditioning capacity output and excessive sacrifice of the air conditioning's air conditioning effect.

[0155] Among them, distance loss E can be determined in advance. For example, in some embodiments, the outdoor unit operating noise and the corresponding indoor noise G are detected in advance, and the noise is calculated according to the formula G=E- E, Determine distance loss E. Specifically, in some embodiments, multiple sets of outdoor unit operating noise and corresponding indoor noise G are detected in advance, and the noise is calculated according to the formula G=E- E, determine multiple sets of distance loss E, then multiple sets of distance loss Taking the average value of E yields a more accurate distance loss. The E value allows for a more effective balance between noise reduction and air conditioning.

[0156] The following will provide further details. Figures 2-4 The example shown.

[0157] like Figures 2-4 As shown, in this embodiment, the maximum operating noise Emax of the outdoor unit, the corresponding relationships of noise during different time periods, the corresponding relationships of fan frequency noise, the corresponding relationships of water pump speed noise, and distance loss are predetermined. E forms a data model stored in the controller, and noise reduction is performed on external unit 1 in the following manner.

[0158] Based on a predetermined distance loss E, and the user-set comfort noise Fs, are calculated according to the formula F=Fs+ E, determine the threshold F, and based on the time-segment noise correspondence and the current time segment, determine the magnitude of the current background noise A. Then, refer to... Figure 3 Determine whether the maximum operating noise of the outdoor unit, Emax, is greater than the background noise, A, that is, determine whether Emax > A.

[0159] If the maximum operating noise of the outdoor unit, Emax, is less than or equal to the background noise, A (i.e., if Emax ≤ A), then it is considered that the noise cannot be effectively controlled to meet user needs by adjusting the operating parameters of outdoor unit 1. Therefore, the entire unit can operate normally and be freely adjusted according to load requirements without being limited by noise reduction. For example, when the background noise A is large during the day (A ≥ Emax), due to the large background noise A, no matter how the operating parameters of outdoor unit 1 are adjusted, it may not meet user needs. Therefore, in this case, no noise limit is imposed on the outdoor unit, and outdoor unit 1 can operate at high frequency to quickly meet air conditioning needs and achieve better air conditioning effects.

[0160] If the maximum operating noise of the outdoor unit Emax is greater than the background noise A, that is, if Emax>A, then it is considered that adjusting the operating parameters of outdoor unit 1 can effectively control the noise of the outdoor unit. In this case, it is further determined whether the maximum operating noise of the outdoor unit Emax is greater than the threshold F, that is, whether Emax>F.

[0161] If the maximum operating noise of the outdoor unit Emax is less than or equal to the threshold F, that is, if Emax≤F, then it is considered that the actual operating noise E of the outdoor unit is unlikely to exceed the threshold F. In this case, the noise of the outdoor unit meets the user's needs and does not need to be adjusted. Therefore, in this case, it is no longer necessary to determine whether E>F, and the noise of the outdoor unit is not limited. The outdoor unit 1 can be freely adjusted according to the load requirements.

[0162] If the maximum operating noise of the outdoor unit Emax is greater than or equal to the threshold F, that is, if Emax>F, then it is considered that the actual operating noise E of the outdoor unit may exceed the threshold F, and noise reduction may be required. Therefore, it is further determined whether the actual operating noise E of the outdoor unit detected in real time by the first sensor 7 during operation is greater than the threshold F, that is, whether E>F.

[0163] If the actual operating noise E of the outdoor unit is determined to be less than or equal to the threshold F, that is, if E≤F, then the noise of the outdoor unit is considered to meet the user's needs and no noise reduction is required. Therefore, the operating parameters of the outdoor unit are not adjusted and the noise of the outdoor unit is not limited. The outdoor unit 1 can be freely adjusted according to the load requirements.

[0164] If the actual operating noise of the outdoor unit is greater than the threshold F, that is, if E>F, then the noise of the outdoor unit is considered to be unacceptable to the user and noise reduction is required. Therefore, the operating parameters of the outdoor unit 1 are adjusted to reduce the noise of the outdoor unit and optimize the noise of the outdoor unit so that the actual operating noise E of the outdoor unit is less than or equal to the threshold F, that is, E≤F, to meet the user's noise requirements, reduce noise pollution, and improve user comfort.

[0165] Specifically, such as Figure 4 As shown, in this embodiment, adjusting the outdoor unit's operating parameters mainly refers to adjusting the frequency of the fan 2, the speed of the water pump 3, and the frequency of the compressor 4, and the adjustment process is carried out in the order of first adjusting the fan 2 and the water pump 3, and then adjusting the compressor 4.

[0166] More specifically, by Figure 4 As can be seen, in this embodiment, when E>F, it is first determined whether the current operating noise of the fan 2 and the water pump 3 is greater than the threshold F. If it is greater, the frequency of the fan 2 and the speed of the water pump 3 are adjusted first; if it is less than or equal to, the frequency of the compressor 4 is adjusted.

[0167] In adjusting the frequency of fan 2 and the speed of water pump 3, the adjustment can be performed in the order of fan 2 first, then water pump 3.

[0168] In actual adjustment, only a small adjustment of fan 2 may be needed to make E≤F. In this case, there is no need to adjust water pump 3 and compressor 4. Instead, the frequency of fan 2 is limited to make it operate at a frequency less than or equal to the adjusted frequency. Water pump 3 and compressor 4 can be adjusted freely according to the load. After a time interval t2 (e.g., 10 min), it can be determined again whether E>F.

[0169] Alternatively, even if the noise level B of fan 2 is adjusted to be less than or equal to the threshold F, E may still be greater than F. In this case, the speed of water pump 3 can be adjusted while limiting the frequency of fan 2. If adjusting water pump 3 can make E ≤ F, then there is no need to adjust compressor 4. Instead, simply limit the frequency of fan 2 and the speed of water pump 3, and allow compressor 4 to adjust freely according to the load. Then, after a time interval t2, check again whether E > F. However, if even if the noise level D of water pump 3 is adjusted to be less than or equal to the threshold F, E cannot be made to ≤ F and E is still greater than F, then the frequency of compressor 4 should be adjusted.

[0170] When adjusting the frequency of compressor 4, the frequency of compressor 4 can be reduced by a preset amplitude P of 2Hz. After each 2Hz reduction, after an interval of time t1 (less than t2, for example, 1 minute), it is determined whether E>F. If E>F, it means that the outdoor unit noise does not meet the requirements. Therefore, the frequency of compressor 4 is reduced until E≤F. If E≤F, the frequency of compressor 4 is limited so that compressor 4 operates at a frequency less than or equal to the adjusted frequency. Then, after an interval of time t2, it is determined again whether E>F.

[0171] If, after an interval of time t2, E is still greater than F, then return to the step of determining whether the current operating noise of fan 2 and water pump 3 is greater than the threshold F, and readjust the operating parameters until, after an interval of time t2, E is less than or equal to F.

[0172] If E≤F after interval t2, it is considered that the outdoor unit noise can reliably meet the user's needs. Therefore, the noise reduction limit is stopped, and the whole unit can be freely adjusted within the adjustment range according to the load requirements.

[0173] As can be seen, this embodiment, before determining whether the actual operating noise E of the outdoor unit is greater than the threshold F and whether to adjust the outdoor unit parameters for noise reduction, first sequentially judges the relationship between the maximum operating noise Emax of the outdoor unit, the background noise A, and the threshold F. It only determines whether the maximum operating noise Emax of the outdoor unit is greater than the threshold F if the maximum operating noise Emax is greater than the background noise A, and only if the maximum operating noise Emax of the outdoor unit is greater than the threshold F if the actual operating noise E of outdoor unit 1 is greater than the threshold F. This allows for different considerations regarding whether noise reduction is needed and whether adjusting operating parameters can effectively reduce noise. This system effectively differentiates noise reduction, ensuring that operating parameters are adjusted only when noise reduction is needed and can be effectively achieved. Noise reduction is not performed when it is not needed or when adjusting operating parameters is ineffective. This approach achieves both good noise reduction and improved user comfort when noise reduction is required and can be effectively achieved, and good noise reduction without limiting the output of outdoor unit 1 when noise reduction is not needed or when adjusting operating parameters is ineffective. Therefore, it effectively balances good noise reduction with good air conditioning performance.

[0174] Furthermore, in the process of adjusting the outdoor unit's operating parameters, this embodiment comprehensively considers the impact of the noise of the fan 2, water pump 3, and compressor 4 on the outdoor unit's noise and air conditioning effect, as well as the ease of adjusting the three components. The adjustment is carried out in the order of fan 2 first, then water pump 3, and finally compressor 4, which can more effectively balance noise reduction and air conditioning effects.

[0175] Furthermore, the threshold F used in the noise reduction process takes user needs into account and can be changed according to the user's setting Fs. Therefore, it can more effectively meet the user's noise requirements and better improve noise comfort. At the same time, the threshold F also takes distance loss into account. E allows for better optimization of noise reduction control, preventing noise loss due to neglecting distance loss. E, which leads to a significant reduction in unit capacity and affects air conditioning performance. Therefore, it is possible to further achieve an effective balance between noise reduction and air conditioning performance.

[0176] In addition, the background noise A used in the noise reduction process is the background noise A of the current time period, which allows the background noise A of different time periods to be used to optimize noise control and capacity output control, balance load demand and user noise requirements, and also helps to more effectively balance noise reduction effect and air conditioning effect.

[0177] Therefore, this embodiment can realize an automated and intelligent outdoor unit noise reduction process, which can quickly reduce the outdoor unit noise to meet user requirements, improve user experience, and balance the air conditioner's capacity output while reducing outdoor unit noise, effectively taking into account the air conditioning effect.

[0178] The noise reduction methods for air conditioner outdoor units in the foregoing embodiments can be performed under the control of a controller. Therefore, this application also provides a controller, which includes a memory and a processor coupled to the memory, the processor being configured to execute the noise reduction methods for air conditioner outdoor units of any embodiment based on instructions stored in the memory.

[0179] In addition, this application also provides a computer-readable storage medium and a computer program product. The computer-readable storage medium stores computer instructions, which are executed by a processor using any embodiment of the air conditioner outdoor unit noise reduction method. The computer program product includes a computer program that, when executed by a processor, implements any embodiment of the air conditioner outdoor unit noise reduction method.

[0180] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application and not to limit them; although this application has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this application or equivalent substitutions can be made to some technical features, all of which should be covered within the scope of the technical solutions claimed in this application.

Claims

1. A method for noise reduction of an air conditioner outdoor unit, characterized in that, include: Determine whether the maximum operating noise Emax of the outdoor unit (1) of the air conditioner is greater than at least one of the background noise A and the threshold F, and if the maximum operating noise Emax of the outdoor unit (1) is greater than at least one of the background noise A and the threshold F, determine whether the actual operating noise E of the outdoor unit (1) is greater than the threshold F; When the actual operating noise E of the outdoor unit (1) is greater than the threshold F, the operating parameters of the outdoor unit (1) are adjusted so that the actual operating noise E of the outdoor unit (1) is reduced to less than or equal to the threshold F; The threshold F is determined based on user needs, or based on user needs and distance loss. E is determined, the distance loss E represents the noise loss over the propagation distance from the outdoor unit (1) to the indoor space.

2. The noise reduction method for an air conditioner outdoor unit according to claim 1, characterized in that, Determining whether the maximum operating noise Emax of the outdoor unit (1) of the air conditioner is greater than at least one of the background noise A and the threshold F, and if the maximum operating noise Emax of the outdoor unit (1) is greater than at least one of the background noise A and the threshold F, determining whether the actual operating noise E of the outdoor unit (1) is greater than the threshold F includes: Determine whether the maximum operating noise Emax of the outdoor unit (1) is greater than the background noise A; If the maximum operating noise Emax of the outdoor unit (1) is greater than the background noise A, determine whether the maximum operating noise Emax of the outdoor unit (1) is greater than the threshold F; If the maximum operating noise Emax of the outdoor unit (1) is greater than the threshold F, determine whether the actual operating noise E of the outdoor unit (1) is greater than the threshold F.

3. The noise reduction method for an air conditioner outdoor unit according to claim 1, characterized in that, Adjusting the operating parameters of the outdoor unit (1) includes at least one of the following: Adjust the operating parameters of the fan (2) of the outdoor unit (1); Adjust the operating parameters of the water pump (3) of the outdoor unit (1); Adjust the operating parameters of the compressor (4) of the outdoor unit (1).

4. The noise reduction method for an air conditioner outdoor unit according to claim 3, characterized in that, Adjusting the operating parameters of the outdoor unit (1) includes at least one of the following: Adjusting the operating parameters of the fan (2) of the outdoor unit (1) includes: reducing the frequency of the fan (2); Adjusting the operating parameters of the water pump (3) of the outdoor unit (1) includes: reducing the speed of the water pump (3); Adjusting the operating parameters of the compressor (4) of the outdoor unit (1) includes: reducing the frequency of the compressor (4); Adjust the operating parameters of at least one of the fan (2) and water pump (3) of the outdoor unit (1), and then adjust the operating parameters of the compressor (4) of the outdoor unit (1).

5. The noise reduction method for an air conditioner outdoor unit according to claim 4, characterized in that, Adjusting the operating parameters of the outdoor unit (1) includes at least one of the following: Reducing the frequency of the fan (2) includes: when the actual operating noise B of the fan (2) is greater than the threshold F, reducing the frequency of the fan (2) so that the actual operating noise B of the fan (2) is less than or equal to the threshold F; Reducing the speed of the water pump (3) includes: when the actual operating noise D of the water pump (3) is greater than the threshold F, reducing the speed of the water pump (3) so that the actual operating noise D of the water pump (3) is less than or equal to the threshold F; Reducing the frequency of the compressor (4) includes: reducing the frequency of the compressor (4) by a preset amplitude P; Reducing the frequency of the compressor (4) includes: after reducing the frequency of the compressor (4) once, at an interval of time t1, determining whether the actual operating noise E of the outdoor unit (1) is greater than the threshold F, and if at an interval of time t1, the actual operating noise E of the outdoor unit (1) is greater than the threshold F, reducing the frequency of the compressor (4) again. Adjusting the operating parameters of at least one of the fan (2) and water pump (3) of the outdoor unit (1) includes: first adjusting the operating parameters of the fan (2), and then adjusting the operating parameters of the water pump (3).

6. The noise reduction method for an air conditioner outdoor unit according to claim 5, characterized in that, First, adjust the operating parameters of the fan (2), and then adjust the operating parameters of the water pump (3), including: Determine whether the actual operating noise B of the fan (2) is greater than the threshold F; If the actual operating noise B of the fan (2) is greater than the threshold F, adjust the operating parameters of the fan (2) so that the actual operating noise B of the fan (2) is less than or equal to the threshold F; If the actual operating noise B of the fan (2) is less than or equal to the threshold F, determine whether the actual operating noise D of the water pump (3) is greater than the threshold F; If the actual operating noise D of the water pump (3) is greater than the threshold F, the operating parameters of the water pump (3) are adjusted so that the actual operating noise D of the water pump (3) is less than or equal to the threshold F.

7. The noise reduction method for an air conditioner outdoor unit according to claim 5, characterized in that, The preset amplitude P is 1~10Hz; and / or t1 is 1~10min.

8. The noise reduction method for an air conditioner outdoor unit according to claim 7, characterized in that, The preset amplitude P is 2~10Hz; and / or t1 is 1~9min.

9. The noise reduction method for an air conditioner outdoor unit according to claim 4, characterized in that, The actual operating noise B of the fan (2) is determined according to the correspondence between the actual operating frequency of the fan (2) and the fan frequency noise; and / or, the actual operating noise D of the water pump (3) is determined according to the correspondence between the actual operating speed of the water pump (3) and the water pump speed noise.

10. The noise reduction method for an air conditioner outdoor unit according to claim 9, characterized in that, The frequency-noise correspondence of the fan is obtained by detecting the noise value of the fan (2) at each frequency when only the fan (2) is turned on in the outdoor unit (1); and / or, the noise correspondence of the water pump gear is obtained by detecting the noise value of the water pump (3) at each gear when only the water pump (3) is turned on in the outdoor unit (1).

11. The noise reduction method for an air conditioner outdoor unit according to any one of claims 1-10, characterized in that, The noise reduction method for the outdoor unit of the air conditioner also includes: After adjusting the operating parameters of the outdoor unit (1) to reduce the actual operating noise E of the outdoor unit (1) to less than or equal to the threshold F, at an interval of time t2, it is determined whether the actual operating noise E of the outdoor unit (1) is greater than the threshold F; If, at interval t2, the actual operating noise E of the outdoor unit (1) is greater than the threshold F, the operating parameters of the outdoor unit (1) are adjusted again so that the actual operating noise E of the outdoor unit (1) is reduced to less than or equal to the threshold F.

12. The noise reduction method for an air conditioner outdoor unit according to claim 11, characterized in that, t2 is 10~30 min.

13. The noise reduction method for an air conditioner outdoor unit according to any one of claims 1-10, characterized in that, The background noise A is determined based on the current time period of the outdoor unit (1) and the corresponding relationship between the time period noise.

14. The noise reduction method for an air conditioner outdoor unit according to claim 13, characterized in that, The noise correspondence for each time period is obtained by detecting the noise value for each time period when the outdoor unit (1) is in standby mode.

15. A controller, characterized in that, The device includes a memory and a processor coupled to the memory, the processor being configured to execute the air conditioner outdoor unit noise reduction method as described in any one of claims 1-14 based on instructions stored in the memory.

16. An air conditioner, comprising an outdoor unit (1), characterized in that, It also includes the controller as described in claim 15.

17. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer instructions that are executed by a processor according to the noise reduction method for an air conditioner outdoor unit as described in any one of claims 1-14.

18. A computer program product comprising a computer program that, when executed by a processor, implements the noise reduction method for an air conditioner outdoor unit as described in any one of claims 1-14.

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