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

Abstract

The invention provides an air conditioner outdoor unit noise reduction method, a controller, an air conditioner, a storage medium and a program product. The noise reduction method for the outdoor unit of the air conditioner comprises the steps that whether the maximum operation noise Emax of the outdoor unit of the air conditioner is larger than at least one of background noise A and a threshold value F or not is judged, and under the condition that the maximum operation noise Emax of the outdoor unit is larger than at least one of the background noise A and the threshold value F, whether the actual operation noise E of the outdoor unit is larger than the threshold value F or not is judged; under the condition that the actual operation noise E of the outdoor unit is larger than the threshold value F, operation parameters of the outdoor unit are adjusted, so that the actual operation noise E of the outdoor unit is reduced to be smaller than or equal to the threshold value F; wherein the threshold value F is determined based on the user demand, or is determined based on the user demand and distance loss, and the distance loss is the loss of the noise in the propagation distance from the outdoor unit to the indoor space. In this way, the noise reduction effect and the air conditioning effect can be effectively considered.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of air conditioner noise reduction technology, and in particular to an air conditioner outdoor unit noise reduction method, a controller, an air conditioner, a storage medium and a program product. BACKGROUND

[0002] An air conditioner outdoor unit generates a large noise during operation, which affects normal life. Therefore, it is necessary to reduce the noise of the outdoor unit.

[0003] However, the outdoor unit noise reduction measures in the related art either have poor noise reduction effect or need to sacrifice air conditioning effect (such as refrigeration and heating effect) to a large extent, and it is usually difficult to effectively balance the noise reduction effect and the air conditioning effect, and thus there is room for improvement.

[0004] The above statements are only used to provide background technical information related to the present application, and do not necessarily constitute the prior art. SUMMARY

[0005] The present application aims to provide an air conditioner outdoor unit noise reduction method, a controller, an air conditioner, a storage medium and a program product to effectively balance the noise reduction effect and the air conditioning effect.

[0006] In order to achieve the above-mentioned purpose, the air conditioner outdoor unit noise reduction method provided by the present application 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 the threshold value 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 value F, determining whether the actual operating noise E of the outdoor unit is greater than the threshold value F; in the case that the actual operating noise E of the outdoor unit is greater than the threshold value F, adjusting the operating parameters 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 value F; wherein the threshold value F is determined based on user demand, or determined based on user demand and distance loss E. E is the loss of noise within the propagation distance from the outdoor unit to the indoor unit.

[0007] 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 value 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 value F, determining whether the actual operating noise E of the outdoor unit is greater than the threshold value F comprises: determining whether the maximum operating noise Emax of the outdoor unit is greater than the background noise A; in the case that the maximum operating noise Emax of the outdoor unit is greater than the background noise A, determining whether the maximum operating noise Emax of the outdoor unit is greater than the threshold value F; In a case where the maximum operation noise Emax of the outdoor unit is greater than the threshold F, it is determined whether the actual operation noise E of the outdoor unit is greater than the threshold F.

[0008] In some embodiments, adjusting the operation parameter of the outdoor unit comprises at least one of: adjusting an operation parameter of a fan of the outdoor unit; adjusting an operation parameter of a water pump of the outdoor unit; adjusting an operation parameter of a compressor of the outdoor unit.

[0009] In some embodiments, adjusting the operation parameter of the outdoor unit comprises at least one of: adjusting an operation parameter of a fan of the outdoor unit comprises reducing a frequency of the fan; adjusting an operation parameter of a water pump of the outdoor unit comprises reducing a gear of the water pump; adjusting an operation parameter of a compressor of the outdoor unit comprises reducing a frequency of the compressor; adjusting an operation parameter of at least one of a fan and a water pump of the outdoor unit, and then adjusting an operation parameter of a compressor of the outdoor unit.

[0010] In some embodiments, adjusting the operation parameter of the outdoor unit comprises at least one of: reducing a frequency of the fan comprises, in a case where the actual operation noise B of the fan is greater than the threshold F, reducing the frequency of the fan such that the actual operation noise B of the fan is less than or equal to the threshold F; reducing a gear of the water pump comprises, in a case where the actual operation noise D of the water pump is greater than the threshold F, reducing the gear of the water pump such that the actual operation noise D of the water pump is less than or equal to the threshold F; reducing a frequency of the compressor comprises reducing the frequency of the compressor by a preset amplitude P; reducing a frequency of the compressor comprises, after reducing the frequency of the compressor once, determining whether the actual operation noise E of the outdoor unit is greater than the threshold F at an interval time t1, and reducing the frequency of the compressor again in a case where the actual operation noise E of the outdoor unit is greater than the threshold F at the interval time t1; adjusting an operation parameter of at least one of a fan and a water pump of the outdoor unit comprises adjusting the operation parameter of the fan first, and then adjusting the operation parameter of the water pump.

[0011] In some embodiments, adjusting the operation parameter of the fan first, and then adjusting the operation parameter of the water pump comprises: determining whether the actual operation noise B of the fan is greater than the threshold F; in a case where the actual operation noise B of the fan is greater than the threshold F, adjusting the operation parameter of the fan such that the actual operation noise B of the fan is less than or equal to the threshold F; In a case where the actual operation noise B of the fan is less than or equal to the threshold F, it is determined whether the actual operation noise D of the water pump is greater than the threshold F; In a case where the actual operation noise D of the water pump is greater than the threshold F, the operation parameter of the water pump is adjusted so that the actual operation noise D of the water pump is less than or equal to the threshold F.

[0012] In some embodiments, the preset amplitude P is 1-10 Hz; and / or, t1 is 1-10 min.

[0013] In some embodiments, the preset amplitude P is 2-10 Hz; and / or, t1 is 1-9 min.

[0014] In some embodiments, the actual operation noise B of the fan is determined according to an actual operation frequency of the fan and a fan frequency-noise correspondence relationship; and / or, the actual operation noise D of the water pump is determined according to an actual operation gear of the water pump and a water pump gear-noise correspondence relationship.

[0015] In some embodiments, the fan frequency-noise correspondence relationship is obtained by detecting noise values of the fan at different frequencies in a case where only the fan is turned on in the outdoor unit; and / or, the water pump gear-noise correspondence relationship is obtained by detecting noise values of the water pump at different gears in a case where only the water pump is turned on in the outdoor unit.

[0016] In some embodiments, the air conditioner outdoor unit noise reduction method further comprises: After the operation parameter of the outdoor unit is adjusted so that the actual operation noise E of the outdoor unit is reduced to be less than or equal to the threshold F, it is determined whether the actual operation noise E of the outdoor unit is greater than the threshold F after an interval time t2; In a case where the actual operation noise E of the outdoor unit is greater than the threshold F after the interval time t2, the operation parameter of the outdoor unit is adjusted again so that the actual operation noise E of the outdoor unit is reduced to be less than or equal to the threshold F.

[0017] In some embodiments, t2 is 10-30 min.

[0018] In some embodiments, the background noise A is determined according to a current period in which the outdoor unit is located and a period-noise correspondence relationship.

[0019] In some embodiments, the period-noise correspondence relationship is obtained by detecting noise values of different periods in a case where the outdoor unit is in standby.

[0020] In addition, the controller provided in the present application comprises a memory and a processor coupled to the memory, and the processor is configured to execute the air conditioner outdoor unit noise reduction method of any embodiment based on instructions stored in the memory.

[0021] In addition, the air conditioner provided in the present application comprises an outdoor unit, and further comprises the controller of any embodiment.

[0022] In addition, the computer readable storage medium provided in the application stores computer instructions, and the computer instructions are executed by a processor to implement the air conditioner outdoor unit noise reduction method of any one of the embodiments.

[0023] In addition, the computer program product provided in the application comprises a computer program, and the computer program is executed by a processor to implement the air conditioner outdoor unit noise reduction method of any one of the embodiments.

[0024] By judging the size relationship between the maximum running noise Emax of the outdoor unit and at least one of the background noise A and the threshold F before judging whether the actual running noise E of the outdoor unit is greater than the threshold F and whether the running parameter of the outdoor unit is adjusted for noise reduction, only in the case that the maximum running noise Emax of the outdoor unit is greater than at least one of the background noise A and the threshold F, whether the actual running noise E of the outdoor unit is greater than the threshold F is judged, and only in the case that the maximum running noise Emax of the outdoor unit is greater than at least one of the background noise A and the threshold F and the actual running noise E of the outdoor unit is greater than the threshold F, the running parameter of the outdoor unit is adjusted for noise reduction, different situations of whether noise reduction is needed and whether the running parameter adjustment can effectively reduce noise can be effectively distinguished, so that better noise reduction effect can be achieved and user comfort can be improved in the case that noise reduction is needed and the running parameter adjustment can effectively reduce noise, better air conditioning effect can be achieved in the case that noise reduction is not needed or the running parameter adjustment cannot effectively reduce noise, and the output of the outdoor unit is not limited, so that the noise reduction effect and the air conditioning effect can be effectively balanced.

[0025] Other features and advantages of the application will become apparent from the following detailed description of exemplary embodiments of the application, with reference to the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0026] The accompanying drawings, which are included to provide a further understanding of the application, constitute a part of the application and illustrate the exemplary embodiments of the application and their description serve to explain the application, and do not constitute improper limitations on the application. In the drawings: Figure 1 It is a structural diagram of the air conditioner in the embodiments of the application.

[0027] Figure 2 It is a logic block diagram of the air conditioner outdoor unit noise reduction method in the embodiments of the application.

[0028] Figure 3 It is a flowchart of the air conditioner outdoor unit noise reduction method in the embodiments of the application.

[0029] Figure 4 It is a flowchart of the adjustment of the running parameter of the outdoor unit in the embodiments of the application.

[0030] Explanation of reference signs: 1, outdoor unit; 2, fan; 3, water pump; 4, compressor; 5, buffer water tank; 6, end; 7, first sensor; 8, second sensor. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. The described embodiments are only some of the embodiments of the present application, not all the embodiments. The description of the at least one exemplary embodiment is actually only illustrative, but not as any limitation on the present application and its application or use.

[0032] In the description of the present application, the words "first", "second", etc. used to limit parts are only for the convenience of distinguishing the corresponding parts, and the above words have no special meaning if not otherwise stated, and therefore cannot be understood as a limitation on the scope of protection of the present application.

[0033] In the description of the present application, it should be understood that the orientation words such as "front, back, up, down, left, right", "transverse, vertical, perpendicular, horizontal" and "top, bottom" and the like indicate the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and in the absence of the opposite description, these orientation words do not indicate and imply that the indicated device or element must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the scope of protection of the present application; the orientation words "inner, outer" refer to the inner and outer of the contour of each part itself.

[0034] In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0035] With the improvement of living standards, the word "noise pollution" has gradually entered the public's field of vision, and noise needs to be controlled in many fields, of course, the air conditioning field is no exception. Controlling noise not only meets the requirements of national standards for air conditioners, but more importantly, it creates a more livable living environment and improves the product experience of users.

[0036] The outdoor unit is an important noise source of the air conditioner. During its operation, it will produce a lot of noise, which not only affects the comfort of the outdoor environment, but also enters the indoor environment, affecting the comfort of the indoor environment.

[0037] In the related art, the most common measure to reduce the noise of the outdoor unit is to set sound insulation materials such as sound insulation cotton at the outdoor unit, and to reduce the noise of the outdoor unit by using a physical noise reduction method. This physical noise reduction method is a passive noise reduction method, and the noise reduction effect is not ideal. In particular, as time increases, the sound insulation materials such as sound insulation cotton will have a decrease in noise reduction performance due to aging and other reasons, and therefore the noise reduction effect will become worse and worse.

[0038] In the prior art, the operation parameters of the outdoor unit are adjusted to reduce the noise of the outdoor unit. This parameter adjustment type outdoor unit noise reduction method is a proactive noise reduction method, which reduces noise from the source of the outdoor unit noise. Therefore, compared with the physical noise reduction method, the noise reduction effect is better, and the noise reduction effect will not be poor due to aging of the sound insulation member.

[0039] However, the parameter adjustment type outdoor unit noise reduction method in the prior art does not distinguish the situation and always adjusts the operation parameters of the outdoor unit to reduce the operation frequency of the outdoor unit when the operation noise of the outdoor unit is large. Since the operation frequency is reduced, the capacity output of the air conditioner is reduced, which affects the air conditioning effect. Therefore, this noise reduction method usually sacrifices the air conditioning effect.

[0040] It can be seen that the outdoor unit noise reduction measures in the prior art either have poor noise reduction effect or need to sacrifice the air conditioning effect, and it is difficult to effectively balance the noise reduction effect and the air conditioning effect.

[0041] To address the above problems, the present application provides an air conditioner outdoor unit noise reduction method, a controller, an air conditioner, a storage medium and a program product to effectively balance the noise reduction effect and the air conditioning effect.

[0042] Figure 1 An air conditioner of the present application is exemplarily shown.

[0043] Referring to Figure 1 , the air conditioner comprises an outdoor unit 1. The outdoor unit 1 is arranged outdoors and cooperates with an indoor unit of the air conditioner arranged indoors to adjust the indoor air, for example, to adjust the temperature of the indoor air to achieve the functions of cooling and heating, and for example, to adjust the humidity of the indoor air to achieve the function of dehumidification. Specifically, in some embodiments, the air conditioner is a heat pump air conditioner which cooperates with a buffer water tank 5 and the like located indoors to provide terminal heating such as floor heating or air disc.

[0044] Continuing to refer to Figure 1 , in some embodiments, the outdoor unit 1 comprises a fan 2, a water pump 3 and a compressor 4 and the like. During operation, the fan 2, the water pump 3 and the compressor 4 and the like will generate noise, so the outdoor unit 1 will generate a large amount of noise. Generally, compared with other noise sources of the outdoor unit 1, the noise generated by the fan 2, the water pump 3 and the compressor 4 is larger, so the fan 2, the water pump 3 and the compressor 4 are the main noise sources of the outdoor unit 1.

[0045] Further, to facilitate the reduction of the noise of the outdoor unit 1 and the implementation of the air conditioner outdoor unit noise reduction method of the present application to be mentioned below, referring to Figure 1 , in some embodiments, the air conditioner further comprises a first sensor 7 arranged in the outdoor unit 1 for noise detection.

[0046] Specifically, in some embodiments, the first sensor 7 detects the noise in real time during the operation of the outdoor unit 1 to obtain the actual operation noise E of the outdoor unit 1 in real time.

[0047] In addition, in some embodiments, the first sensor 7 also detects the maximum operation noise Emax of the outdoor unit 1. It can be understood that the maximum operation noise Emax of the outdoor unit 1 is the maximum value of the noise during the operation of the outdoor unit.

[0048] In order to facilitate the use in the noise reduction process, the maximum operation noise Emax of the outdoor unit 1 can be detected and determined in advance. For example, in some embodiments, the maximum operation noise Emax of the outdoor unit 1 is obtained by detecting the operation noise of the outdoor unit 1 using the first sensor 7 when the air conditioner is shipped. Specifically, in some embodiments, the operation noise of the outdoor unit 1 is detected when the air conditioner is shipped, and the maximum decibel value in the detection result is determined as the maximum operation noise Emax of the outdoor unit 1. Further, in some embodiments, the maximum operation noise Emax of the outdoor unit 1 determined by the factory detection is also optimized to obtain the optimized maximum operation noise Emax of the outdoor unit 1. For example, in some embodiments, if the actual operation noise E of the outdoor unit 1 is greater than the maximum operation noise Emax determined by the factory during the actual operation after the factory, the larger actual operation noise is taken as the new maximum operation noise Emax, so as to constantly improve the data and obtain a more accurate maximum operation noise Emax.

[0049] In some embodiments, the maximum operation noise Emax of the outdoor unit 1 is stored in the controller to constitute a maximum operation noise Emax data model of the outdoor unit, so as to be automatically called in the noise reduction process, realize a more automated and intelligent noise reduction process, and improve the efficiency.

[0050] By detecting the maximum operation noise Emax of the outdoor unit and considering the maximum operation noise Emax of the outdoor unit in the noise reduction process of the outdoor unit, it is beneficial to improve the noise reduction accuracy, reduce the influence of the noise reduction process on the air conditioning effect, and effectively balance the noise reduction effect and the air conditioning effect, which will be further described below.

[0051] In addition, in some embodiments, the first sensor 7 also detects the noise when the outdoor unit 1 is on standby (i.e. stopped, not running). When the outdoor unit 1 is on standby, the outdoor unit 1 is not running, the air conditioner has no output, the operation noise of the outdoor unit is 0, and the noise detected by the first sensor 7 is the sum of other noises in the environment of the outdoor unit 1 except the operation noise of the outdoor unit, which can be called background noise (or environmental noise) A.

[0052] It can be seen that the background noise A is the sum of other noises in the environment of the outdoor unit 1 except for the running noise of the outdoor unit. The background noise A can be obtained by detection when the outdoor unit 1 is in standby (i.e., not running). Since the air conditioner has no output when the outdoor unit 1 is in standby, the noise at the outdoor unit 1 under the corresponding condition can be detected to obtain the background noise A.

[0053] By detecting the background noise A and considering the background noise A in the outdoor unit noise reduction process, the noise reduction accuracy can be improved, the influence of the noise reduction process on the air conditioning effect can be reduced, and the noise reduction effect and the air conditioning effect can be effectively balanced, which will be further described below.

[0054] The background noise A of different time periods is not the same, for example, the night is relatively quiet compared to the day, cooking is relatively quiet compared to working at home, and the like. Therefore, in order to improve the noise reduction accuracy, as mentioned below, in some embodiments, the background noise A used by the air conditioner outdoor unit noise reduction method is the background noise A of the current period in which the outdoor unit 1 is located, so that the background noise values of different time periods are used to optimize the noise reduction control and the capacity output control, and the noise reduction effect and the air conditioning effect are better balanced.

[0055] However, during the operation of the air conditioner, the outdoor unit 1 cannot be stopped to detect the current background noise A. Therefore, how to determine the current background noise A is a difficult problem. In order to solve the corresponding problem, in some embodiments, the first sensor 7 is used to detect the noise of each period under the condition that the outdoor unit 1 is stopped, to obtain the background noise value corresponding to each period, and to determine the period noise corresponding relationship (i.e., the corresponding relationship between the period and the noise), so that only the current period in which the outdoor unit 1 is located needs to be determined, and then the noise value corresponding to the current period is found according to the period noise corresponding relationship, so that the current period background noise A can be determined, which is simple and convenient, and can effectively solve the detection problem of the current background noise A, and facilitate the use of background noise values of different time periods to optimize the noise reduction control and the capacity output control, and better balance the noise reduction effect and the air conditioning effect.

[0056] It can be seen that the background noise A can be determined in advance. Specifically, the period noise corresponding relationship can be determined in advance, and the background noise A can be determined according to the corresponding period noise corresponding relationship and the current period in which the outdoor unit 1 is located.

[0057] In some embodiments, the pre-determined period noise corresponding relationship is stored in the controller to constitute a period noise corresponding relationship data model, so as to be automatically called in the noise reduction process, to realize a more automated and intelligent noise reduction process, and to improve the efficiency.

[0058] In addition, in some embodiments, the first sensor 7 also detects the noise of the fan 2, the water pump 3 and the compressor 4 to obtain the noise of the fan 2, the water pump 3 and the compressor 4 for the noise reduction process. Since the first sensor 7 can only detect the overall noise of the outdoor unit 1 during operation of the outdoor unit 1, the noise of the fan 2, the water pump 3 and the compressor 4 is mixed together and difficult to distinguish, therefore, how to determine the actual operating noise of the fan 2, the water pump 3 and the compressor 4 is also a difficult problem. In order to solve the corresponding problem, in some embodiments, the first sensor 7 is used to detect the noise under the condition that only the fan 2, the water pump 3 and the compressor 4 of the outdoor unit 1 are turned on respectively in advance, and the corresponding relationship between the noise and the operating parameters of the fan 2, the water pump 3 and the compressor 4 is obtained respectively, then, according to the corresponding relationship and the actual operating parameters of the fan 2, the water pump 3 and the compressor 4 during actual operation, the actual operating noise of the fan 2, the water pump 3 and the compressor 4 is determined respectively.

[0059] For example, in some embodiments, in order to determine the actual operating noise B of the fan 2, the fan frequency noise corresponding relationship (i.e. the corresponding relationship between the frequency and the noise of the fan 2) is determined in advance, and then the actual operating noise B of the fan 2 is determined according to the corresponding fan frequency noise corresponding relationship and the actual operating frequency of the fan 2. Specifically, in some embodiments, the noise value of the fan 2 at each frequency is detected by the first sensor 7 under the condition that only the fan 2 of the outdoor unit 1 is turned on in advance, and is recorded, thereby obtaining the fan frequency noise corresponding relationship, then, during the noise reduction process, only the actual operating frequency of the fan 2 needs to be determined, and then according to the pre-determined fan frequency noise corresponding relationship, the corresponding fan noise value at the current fan frequency is found, thereby determining the actual operating noise B of the fan 2, which is simple and convenient, and can effectively solve the detection problem of the actual operating noise B of the fan. The pre-determined fan frequency noise corresponding relationship can be stored in the controller to form a fan frequency noise corresponding relationship data model, so as to automatically call during the noise reduction process, realize more automatic and intelligent noise reduction process, and improve the efficiency.

[0060] For example, in some embodiments, in order to determine the actual running noise D of the water pump 3, a water pump gear noise corresponding relationship (i.e. the corresponding relationship between the gear and the noise of the water pump 3) is determined in advance, and then the actual running noise D of the water pump 3 is determined according to the corresponding water pump gear noise corresponding relationship and the actual running gear of the water pump 3. Specifically, in some embodiments, the noise value of the water pump 3 at each gear is detected by the first sensor 7 when the outdoor unit 1 only opens the water pump 3, and is recorded to obtain the water pump gear noise corresponding relationship. Then, in the noise reduction process, only the actual running gear of the water pump 3 needs to be determined, and then the corresponding water pump noise value at the current water pump gear is found according to the pre-determined water pump gear noise corresponding relationship, so as to determine the actual running noise D of the water pump 3. This is simple and convenient, and can effectively solve the detection problem of the actual running noise D of the water pump. The pre-determined water pump gear noise corresponding relationship can be stored in the controller to form a water pump gear noise corresponding relationship data model, so as to automatically call in the noise reduction process, realize a more automated and intelligent noise reduction process, and improve the efficiency.

[0061] For example, in some embodiments, in order to determine the actual running noise C of the compressor 4, a compressor frequency noise corresponding relationship (i.e. the corresponding relationship between the frequency and the noise of the compressor 4) is determined in advance, and then the actual running noise of the compressor 4 is determined according to the corresponding compressor frequency noise corresponding relationship and the actual running frequency of the compressor 4. Specifically, in some embodiments, the noise value of the compressor 4 at each frequency is detected by the first sensor 7 when the outdoor unit 1 only opens the compressor 4, and is recorded to obtain the compressor frequency noise corresponding relationship. Then, in the noise reduction process, only the actual running frequency of the compressor 4 needs to be determined, and then the corresponding compressor noise value at the current compressor frequency is found according to the pre-determined compressor frequency noise corresponding relationship, so as to determine the actual running noise of the compressor 4. This is simple and convenient, and can effectively solve the detection problem of the actual running frequency of the compressor. The pre-determined compressor frequency noise corresponding relationship can be stored in the controller to form a compressor frequency noise corresponding relationship data model, so as to automatically call in the noise reduction process, realize a more automated and intelligent noise reduction process, and improve the efficiency.

[0062] It can be seen that based on the set first sensor 7, the detection and determination of the actual running noise E of the outdoor unit, the maximum running noise Emax of the outdoor unit, the background noise A, the actual running noise B of the fan, the actual running noise D of the water pump and the actual running noise C of the compressor can be realized. Based on these parameters, the noise of the outdoor unit is reduced, which is beneficial to realize a more accurate and effective outdoor unit noise reduction process, and effectively balances the noise reduction effect and the air conditioning effect.

[0063] In addition, referring to Figure 1In some embodiments, the indoor side is provided with a second sensor 8 for detecting the indoor noise G. Specifically, in some embodiments, the second sensor 8 is arranged at the indoor unit to detect the indoor noise G.

[0064] The second sensor 8 is arranged to detect the indoor noise G, which is conducive to correcting the outdoor unit running noise, and in particular, is conducive to correcting the outdoor unit running noise by using the distance loss Ecorrecting the outdoor unit running noise improves the accuracy of outdoor unit noise control, prevents excessive sacrifice of air conditioning capacity output, and affects the air conditioning effect, which will be further described below.

[0065] In order to reduce the noise of the outdoor unit 1, and in particular, to effectively reduce the noise of the outdoor unit 1 while taking into account the air conditioning effect, the present application provides an air conditioner outdoor unit noise reduction method.

[0066] Figures 2-4 The air conditioner outdoor unit noise reduction method of the present application is exemplarily shown.

[0067] Referring to Figures 2-4 In the present application, the air conditioner outdoor unit noise reduction method comprises: S100, determining whether the maximum running 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 value F, and in the case that the maximum running noise Emax of the outdoor unit 1 is greater than at least one of the background noise A and the threshold value F, determining whether the actual running noise E of the outdoor unit 1 is greater than the threshold value F.

[0068] S200, in the case that the actual running noise E of the outdoor unit 1 is greater than the threshold value F, adjusting the running parameters of the outdoor unit 1 so that the actual running noise E of the outdoor unit 1 is reduced to be less than or equal to the threshold value F.

[0069] Based on the above steps S100 and S200, the present application adopts a parameter adjustment type noise reduction method in the process of reducing the noise of the outdoor unit, which can actively reduce the noise from the source of the outdoor unit noise, and the noise reduction effect is not affected by the reasons such as time increase and aging of sound insulation parts, so that a more lasting and effective noise reduction effect can be achieved.

[0070] Moreover, the parameter adjustment type noise reduction manner adopted in the present application is different from the parameter adjustment type noise reduction manner in the related art. In the process of reducing the noise of the outdoor unit 1, instead of indiscriminately making the outdoor unit run at a lower frequency when the noise of the outdoor unit is large, the present application introduces parameters such as the maximum operating noise Emax of the outdoor unit, the background noise A, and the threshold F, and based on the parameters such as the maximum operating noise Emax of the outdoor unit, the background noise A, and the threshold F, the actual situation is distinguished by judging the size relationship between the maximum operating noise Emax of the outdoor unit and at least one of the background noise A and the threshold F, so that the actual operating noise E of the outdoor unit 1 is determined to be greater than the threshold F only 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, and the operating parameters of the outdoor unit 1 are adjusted to reduce the noise of the outdoor unit 1 only 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, and the actual operating noise E of the outdoor unit 1 is greater than the threshold F. In this way, the operating parameters can be adjusted to reduce the noise only when it is necessary to reduce the noise and the adjustment of the operating parameters can effectively reduce the noise, and the operating parameters are not adjusted and the noise is not reduced in the case where it is not necessary to reduce the noise or the adjustment of the operating parameters cannot effectively reduce the noise, so that better noise reduction effect can be achieved, the user comfort can be improved, and the air conditioning effect can be effectively taken into account on the basis of achieving better noise reduction effect.

[0071] The meanings of the maximum operating noise Emax and the background noise A have been introduced above, and will not be repeated here. The meaning of the threshold F can also be understood as a preset upper limit value of the outdoor unit operating noise that meets the requirements. When the actual operating noise E of the outdoor unit 1 is less than or equal to the threshold F, the noise of the outdoor unit 1 is appropriate, and the user experience is more comfortable. When the actual operating noise E of the outdoor unit 1 is greater than the threshold F, the noise of the outdoor unit 1 is too large, which will reduce the user comfort. That is, the condition that the outdoor unit operating noise meets the requirements is less than or equal to the threshold F, i.e., E≤F. When the outdoor unit operating noise is greater than the threshold F, i.e., when E>F, the noise is reduced to improve the user comfort.

[0072] The maximum running noise Emax of the outdoor unit 1 is greater than the background noise A, which can reflect whether the adjustment of the running parameters of the outdoor unit can effectively reduce noise. Specifically, when the maximum running 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 running noise Emax of the outdoor unit. In this case, the parameter adjustment of the outdoor unit 1 can effectively reduce the noise of the outdoor unit. When the maximum running 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 greater than the maximum running noise Emax of the outdoor unit. In this case, even if the running parameters of the outdoor unit 1 are adjusted, it is difficult to effectively reduce the noise, or no matter how the running parameters of the outdoor unit are adjusted, the noise cannot be effectively reduced to meet the requirement (F<A). Therefore, in the corresponding case, the size relationship between the actual running noise E of the outdoor unit and the threshold F is not judged, and the outdoor unit 1 is not reduced in noise. The outdoor unit 1 can normally operate according to the air conditioning demand, output higher capacity, effectively meet the air conditioning demand, and achieve better air conditioning effect.

[0073] It can be seen that before judging whether the actual running noise of the outdoor unit is greater than the threshold F, it is judged whether the maximum running noise Emax of the outdoor unit is greater than the background noise A. Different cases of whether the adjustment of the running parameters of the outdoor unit can effectively reduce the noise can be effectively distinguished, so that the load demand can be directly prioritized in the case where the adjustment of the running parameters cannot effectively reduce the noise, without reducing the noise by limiting the output. In this way, it can be prevented that the air conditioning effect is affected due to the limitation of the output for noise reduction in the case where the adjustment of the running parameters cannot effectively reduce the noise. Therefore, the noise reduction effect and the air conditioning effect can be effectively considered.

[0074] In addition, whether the maximum running noise Emax of the outdoor unit 1 is greater than the threshold F can reflect whether noise reduction is needed. Specifically, when the maximum running noise Emax of the outdoor unit 1 is greater than the threshold F, that is, when Emax>F, it means that the actual running noise E of the outdoor unit 1 can exceed the threshold F. In this case, it is necessary to further judge whether the actual running noise E of the outdoor unit 1 is greater than the threshold F to control the noise reduction of the outdoor unit. When the maximum running noise Emax of the outdoor unit 1 is less than or equal to the threshold F, that is, when Emax≤F, it means that the maximum running noise Emax of the outdoor unit does not exceed the threshold F. Then, the actual running noise of the outdoor unit is not likely to exceed the threshold F, and the noise of the outdoor unit as a whole can meet the requirement and does not need to be reduced. Therefore, in the corresponding case, the size relationship between the actual running noise E of the outdoor unit and the threshold F is not judged, and the outdoor unit 1 is not reduced in noise. The outdoor unit 1 can normally operate according to the air conditioning demand, output higher capacity, effectively meet the air conditioning demand, and achieve better air conditioning effect.

[0075] It can be seen that, before judging whether the actual operation noise of the outdoor unit is greater than the threshold F, it is first judged whether the maximum operation noise Emax of the outdoor unit is greater than the threshold F, different situations whether noise reduction is needed can be effectively distinguished, so that in the case of pre-judging that noise reduction is not needed, the output is not limited to noise reduction, and the load demand is directly prioritized. This can prevent the output from being limited to noise reduction in the case where noise reduction is not needed, thereby affecting the air conditioning effect. Therefore, the noise reduction effect and the air conditioning effect can be effectively balanced.

[0076] Moreover, by judging whether the maximum operation noise Emax of the outdoor unit is greater than the threshold F to determine whether noise reduction is needed, it can be overall predicted whether the actual operation noise is likely to be greater than the threshold F, and further distinguish different situations whether noise reduction is needed in advance, so that in the case of pre-judging that the actual operation noise is not likely to be greater than the threshold F, the size relationship between the actual operation noise and the threshold F is no longer judged. Therefore, the control can be simplified and the efficiency can be improved.

[0077] In summary, before judging whether the actual operation noise E of the outdoor unit is greater than the threshold F and whether the parameter of the outdoor unit is adjusted for noise reduction, it is first judged whether the maximum operation noise Emax of the outdoor unit is greater than at least one of the background noise A and the threshold F. Only in the case where the maximum operation noise Emax of the outdoor unit is greater than at least one of the background noise A and the threshold F, it is judged whether the actual operation noise E of the outdoor unit 1 is greater than the threshold F. Only in the case where the maximum operation noise Emax of the outdoor unit is greater than at least one of the background noise A and the threshold F, and the actual operation noise E of the outdoor unit 1 is greater than the threshold F, the operation parameter of the outdoor unit 1 is adjusted to reduce the noise of the outdoor unit 1. Different situations whether noise reduction is needed and whether the adjusted operation parameter can effectively reduce the noise can be effectively distinguished, so that only in the case where noise reduction is needed and the adjusted operation parameter can effectively reduce the noise, the operation parameter is adjusted for noise reduction. In the case where noise reduction is not needed or the adjusted operation parameter cannot effectively reduce the noise, the operation parameter is not adjusted for noise reduction. In this way, in the case where noise reduction is needed and the adjusted operation parameter can effectively reduce the noise, a better noise reduction effect can be achieved to improve user comfort. In the case where noise reduction is not needed or the adjusted operation parameter cannot effectively reduce the noise, the output of the outdoor unit 1 is not limited, and a better air conditioning effect can be achieved. Therefore, the corresponding air conditioner outdoor unit noise reduction method can effectively balance the noise reduction effect and the air conditioning effect, and achieve a better noise reduction effect on the basis of effectively balancing the air conditioning effect.

[0078] In step S100, the size relationship between the maximum running noise Emax of the outdoor unit and one of the background noise A and the threshold F can be determined, i.e., the size relationship between the maximum running noise Emax of the outdoor unit and the background noise A is determined, or the size relationship between the maximum running noise Emax of the outdoor unit and the threshold F is determined, or the size relationship between the maximum running noise Emax of the outdoor unit and the background noise A and the threshold F can be determined, i.e., the size relationship between the maximum running noise Emax of the outdoor unit and the background noise A is determined, and the size relationship between the maximum running noise Emax of the outdoor unit and the threshold F is determined. When the size relationship between the maximum running noise Emax of the outdoor unit and the background noise A is determined, and the size relationship between the maximum running noise Emax of the outdoor unit and the threshold F is determined, different situations whether noise reduction is needed and whether adjusting the running parameter can effectively reduce the noise can be distinguished more fully, so as to better balance the noise reduction effect and the air conditioning effect.

[0079] When the size relationship between the maximum running noise Emax of the outdoor unit and the background noise A is determined, and the size relationship between the maximum running noise Emax of the outdoor unit and the threshold F is determined, the two conditions can be determined simultaneously or sequentially.

[0080] For example, referring to Figure 3 In some embodiments, step S100 further comprises: determining whether the maximum running noise Emax of the outdoor unit 1 is greater than the background noise A; In the case where the maximum running noise Emax of the outdoor unit 1 is greater than the background noise A, determining whether the maximum running noise Emax of the outdoor unit 1 is greater than the threshold F; In the case where the maximum running noise Emax of the outdoor unit 1 is greater than the threshold F, determining whether the actual running noise E of the outdoor unit 1 is greater than the threshold F.

[0081] The above method makes it possible to judge the size relationship between the maximum operating noise Emax of the outdoor unit and the background noise A and the size relationship between the maximum operating noise Emax of the outdoor unit and the threshold value F in step S100, and the two conditions are judged in sequence, that is, the size relationship between the maximum operating noise Emax of the outdoor unit 1 and the background noise A is judged first, and then the size relationship between the maximum operating noise Emax of the outdoor unit 1 and the threshold value F is judged, and only in the case where the maximum operating noise Emax of the outdoor unit is greater than the background noise A, it is judged whether the maximum operating noise Emax of the outdoor unit is greater than the threshold value F, while in the case where the maximum operating noise Emax of the outdoor unit is less than or equal to the background noise A, the size relationship between the maximum operating noise Emax of the outdoor unit and the threshold value F is not judged any more, so that in the case where the adjustment of the operating parameters cannot effectively reduce the noise of the outdoor unit, it is directly not judged whether the actual operating noise may exceed the threshold value F, and thus the air conditioner outdoor unit noise reduction method can be further optimized, the control process is simplified, and the efficiency is improved.

[0082] In step S200, the adjusted operating parameters of the outdoor unit 1 can be various. As an example, see Figure 4 In step S200, the adjusted operating parameters of the outdoor unit 1 include the operating parameters of at least one of the fan 2, the water pump 3 and the compressor 4, that is, the adjustment of the operating parameters of the outdoor unit 1 in step S200 includes at least one of the adjustment of the operating parameters of the fan 2 of the outdoor unit 1, the adjustment of the operating parameters of the water pump 3 of the outdoor unit 1 and the adjustment of the operating parameters of the compressor 4 of the outdoor unit 1.

[0083] As mentioned above, the fan 2, the water pump 3 and the compressor 4 are the main noise sources of the outdoor unit 1, so adjusting the operating parameters of at least one of the fan 2, the water pump 3 and the compressor 4 can effectively reduce the noise of the outdoor unit 1 and achieve better noise reduction effect.

[0084] For the fan 2, the water pump 3 and the compressor 4, the noise generated in the actual operating process is different, and the influence on the outdoor unit noise is not the same. Generally speaking, among the three, the compressor 4 has the greatest influence, the fan 2 is in the middle, and the water pump 3 has the least influence. In this case, in the noise reduction process, it is necessary to specifically select which one or more of the three to adjust the parameters, and when multiple ones are selected from the three to adjust the parameters, how to determine the adjustment sequence, which has a significant influence on the noise reduction effect and the air conditioning effect.

[0085] To achieve a better noise reduction effect, in some embodiments, the step S200 of 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. In this way, the adjustment means is more diverse. When it is necessary to adjust the operating parameters for noise reduction, not only the compressor parameters can be adjusted to reduce noise, but also the fan and / or water pump parameters can be adjusted to reduce noise. Therefore, it is convenient to determine a more appropriate parameter adjustment strategy according to the actual situation, effectively balance the air conditioning effect, and achieve a better noise reduction effect. Thus, it is beneficial to better balance the noise reduction effect and the air conditioning effect.

[0086] In the case where the adjustment of the operating parameters of the outdoor unit 1 includes not only the adjustment of the operating parameters of the compressor 4, but also the adjustment of the operating parameters of at least one of the fan 2 and the water pump 3, the operating parameters of at least one of the fan 2 and the water pump 3 and the compressor 4 can be adjusted simultaneously, or the operating parameters of at least one of the fan 2 and the water pump 3 and the compressor 4 can be adjusted in sequence. When the operating parameters of at least one of the fan 2 and the water pump 3 and the compressor 4 are adjusted in sequence, the compressor 4 and at least one of the fan 2 and the water pump 3 do not necessarily need to be adjusted every time the outdoor unit noise is reduced to meet the requirements (i.e., less than or equal to the threshold F). Instead, the compressor 4 is adjusted only when the outdoor unit noise cannot be reduced to meet the requirements after the adjustment of at least one of the fan 2 and the water pump 3. In this way, the noise reduction process is more simple and reasonable, and the noise reduction effect and the air conditioning effect can be more effectively balanced.

[0087] For example, referring to Figure 4 In some embodiments, the step S200 of adjusting the operating parameters of the outdoor unit 1 includes: adjusting the operating parameters of at least one of the fan 2 and the water pump 3, and then adjusting the operating parameters of the compressor 4 of the outdoor unit 1.

[0088] The above-mentioned method adjusts the noise by first adjusting at least one of the fan 2 and the water pump 3, and then adjusting the compressor 4. In this way, the compressor 4 does not necessarily need to be adjusted every time the outdoor unit noise is reduced to meet the requirements (i.e., less than or equal to the threshold F). Instead, the compressor 4 is adjusted only when the outdoor unit noise cannot be reduced to meet the requirements after the adjustment of at least one of the fan 2 and the water pump 3.

[0089] The compressor 4 is the main noise source of the outdoor unit 1, but the operating range of the compressor 4 is large, for example, the frequency range is 0-120 Hz, and the compressor noise is greatly affected by the ambient temperature and water temperature, and it is difficult to adjust, and the uncertainty of the adjustment effect is stronger, while the operating range of the fan 2 and the water pump 3 is relatively small, and the influence of the environment on the noise value of the fan 2 and the water pump 3 is small, the adjustment difficulty is small, and the certainty of the adjustment effect is stronger, so, first, at least one of the fan 2 and the water pump 3 is adjusted, the noise of at least one of the fan 2 and the water pump 3 is limited, and then whether the compressor is adjusted is determined according to the adjustment effect, so that a more simple and reasonable adjustment process can be realized, and the noise control level can be improved.

[0090] Moreover, since the adjustment of the compressor 4 has a greater impact on the capacity output, therefore, only in the case that the adjustment of at least one of the fan 2 and the water pump 3 still cannot meet the noise requirement, the compressor 4 is adjusted, and in the case that the adjustment of at least one of the fan 2 and the water pump 3 has met the noise requirement, the compressor 4 is not adjusted, which can effectively reduce the adverse effects on air conditioning effect caused by adjusting the compressor, while achieving better noise reduction effect, effectively taking into account the air conditioning effect.

[0091] In addition, since the adjustment of at least one of the fan 2 and the water pump 3 and the adjustment of the compressor 4 are not performed at the same time, the influence of adjusting at least one of the fan 2 and the water pump 3 on the noise and the influence of adjusting the compressor 4 on the noise are not coupled together, but are separated from each other, which can be easily distinguished, so that it is more convenient to reasonably determine the adjustment effect of each adjustment and the parameter adjustment strategy each time, effectively simplifying the adjustment process and improving the adjustment accuracy.

[0092] It can be seen that, by adopting the mode of first adjusting at least one of the fan 2 and the water pump 3, and then adjusting the compressor 4, to reduce the noise of the outdoor unit 1, a more simple and reasonable adjustment process can be realized, and the noise reduction effect and the air conditioning effect can be more effectively taken into account.

[0093] Among them, the adjustment of at least one of the fan 2 and the water pump 3 can be adjusting only one of the fan 2 and the water pump 3, or adjusting both the fan 2 and the water pump 3. When adjusting both the fan 2 and the water pump 3, it means that all three main noise sources of the outdoor unit 1 can be adjusted during the noise reduction process, the noise reduction means is more abundant, which is conducive to achieving better noise reduction effect, and the fan 2 and the water pump 3 can be adjusted before the compressor 4 is adjusted, which is more conducive to meeting the noise requirement of the outdoor unit without adjusting the compressor, while achieving better noise reduction effect, effectively taking into account the air conditioning effect.

[0094] In the case of adjusting both the fan 2 and the water pump 3, the adjustment of the fan 2 and the water pump 3 can be performed simultaneously, or can be performed in sequence. For example, in some embodiments, the adjusting the operating parameter of at least one of the fan 2 and the water pump 3 comprises: adjusting the operating parameter of the fan 2 first, and then adjusting the operating parameter of the water pump 3.

[0095] In the above manner, the fan 2 is adjusted first, and then the water pump 3, and then the compressor 4, so that the noise reduction is adjusted in sequence. In this way, it is not necessary to adjust the fan 2 and the water pump 3 every time before adjusting the compressor 4, but only in the case where the adjustment of the fan 2 cannot meet the requirements, the water pump 3 is adjusted, and the adjustment sequence of the fan first and then the water pump is consistent with the case where the fan has a greater impact on the noise than the water pump, so that the adjustment process is more simple and reasonable, and a better adjustment effect is achieved.

[0096] Specifically, in some embodiments, the adjusting the operating parameter of at least one of the fan 2 and the water pump 3 comprises: determining whether the actual operating noise B of the fan 2 is greater than the threshold F; in the case where the actual operating noise B of the fan 2 is greater than the threshold F, adjusting the operating parameter of the fan 2 so that the actual operating noise B of the fan 2 is less than or equal to the threshold F; in the case where the actual operating noise B of the fan 2 is less than or equal to the threshold F, determining whether the actual operating noise D of the water pump 3 is greater than the threshold F; in the case where the actual operating noise D of the water pump 3 is greater than the threshold F, adjusting the operating parameter 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.

[0097] In the above manner, in the case where E>F, not only are the operating parameters of the fan 2 and the water pump 3 adjusted in the order of the fan first and then the water pump, but also, in the process of adjusting the fan 2 and the water pump 3, whether the actual operating noise value of each is greater than the threshold F is used as a condition for whether to start the corresponding adjustment, and whether the actual operating noise value of each is less than or equal to the threshold F is used as a condition for whether to end the corresponding adjustment and start the adjustment of the next noise source, so that the adjustment process is more reasonable and feasible, the outdoor unit noise output level can be effectively controlled, and the user comfort can be improved.

[0098] The operating parameter of the fan 2 can include the frequency of the fan 2, and correspondingly, the adjusting the operating parameter of the fan 2 of the outdoor unit 1 can include: reducing the frequency of the fan 2. The frequency of the fan 2 is an important factor affecting the size of the fan noise, the higher the frequency of the fan 2, the greater the noise of the fan 2, and the smaller the frequency of the fan 2, the smaller the noise of the fan 2, therefore, by reducing the frequency of the fan 2, the operating noise of the fan 2 can be effectively reduced, and in turn the operating noise of the outdoor unit 1 can be effectively reduced, achieving a better noise reduction effect.

[0099] Specifically, referring to Figure 4 In some embodiments, reducing the frequency of the fan 2 comprises: in a case where 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. In this way, in step S200, the actual operating noise B of the fan 2 can be effectively reduced to be less than or equal to the threshold F by limiting the frequency of the fan 2, so as to effectively reduce the overall noise of the outdoor unit. As described above, the actual operating noise B of the fan 2 can be determined according to the actual operating frequency of the fan 2 and the corresponding relationship between the fan frequency and the noise, which will not be described here again.

[0100] In addition, the operating parameter of the water pump 3 can include the gear of the water pump 3, and correspondingly, adjusting the operating parameter of the water pump 3 of the outdoor unit 1 can include: reducing the gear of the water pump 3. The gear of the water pump 3 is an important factor affecting the noise of the water pump, the higher the gear of the water pump 3, the greater the noise of the water pump 3, and the smaller the gear of the water pump 3, the smaller the noise of the water pump 3, so by reducing the gear of the water pump 3, the operating noise of the water pump 3 can be effectively reduced, and in turn the operating noise of the outdoor unit 1 can be effectively reduced, achieving a better noise reduction effect.

[0101] Specifically, referring to Figure 4 reducing the gear of the water pump 3 comprises: in a case where the actual operating noise D of the water pump 3 is greater than the threshold F, reducing the gear 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. In this way, in step S200, the actual operating noise D of the water pump 3 can be effectively reduced to be less than or equal to the threshold F by limiting the gear of the water pump 3, so as to effectively reduce the overall noise of the outdoor unit. As described above, the actual operating noise D of the water pump 3 can be determined according to the actual operating gear of the water pump 3 and the corresponding relationship between the water pump gear and the noise, which will not be described here again.

[0102] In addition, the operating parameter of the water pump 3 can include the gear of the water pump 3, and correspondingly, adjusting the operating parameter of the water pump 3 of the outdoor unit 1 can include: reducing the gear of the water pump 3. The gear of the water pump 3 is an important factor affecting the noise of the water pump, the higher the gear of the water pump 3, the greater the noise of the water pump 3, and the smaller the gear of the water pump 3, the smaller the noise of the water pump 3, so by reducing the gear of the water pump 3, the operating noise of the water pump 3 can be effectively reduced, and in turn the operating noise of the outdoor unit 1 can be effectively reduced, achieving a better noise reduction effect.

[0103] In the process of reducing the frequency of the compressor 4, the frequency of the compressor 4 can be reduced by a preset amplitude P, that is, each time the frequency of the compressor 4 is reduced, the frequency of the compressor 4 is reduced by the preset amplitude P. In this way, the compressor frequency is reduced by the same size each time, which can effectively reduce the compressor noise, achieve a better outdoor unit noise reduction effect, and also realize a more regular compressor frequency reduction process, effectively reduce the difficulty of compressor frequency reduction, and simplify the compressor frequency reduction process.

[0104] The preset amplitude P can be preset, and the specific size can be set according to actual conditions. As an example, the preset amplitude is 1-10 Hz, for example, 2-10 Hz, specifically, 2 Hz, 3 Hz, 4 Hz, 5 Hz, 6 Hz, 7 Hz, 8 Hz, 9 Hz or 10 Hz. In this way, the size of the preset amplitude P is more appropriate, and the compressor is reduced according to the corresponding preset amplitude P. The noise intensity can be effectively reduced, and the compressor can be prevented from being reduced too high at a time, which affects the output of the whole machine capacity and affects the air conditioning effect, so that the noise reduction effect and the air conditioning effect can be effectively considered.

[0105] It can be understood that in step S200, after adjusting the frequency and other operating parameters of the compressor each time, the actual operating noise E of the outdoor unit 1 is detected again, and it is judged whether the actual operating noise E of the outdoor unit 1 after this adjustment is less than or equal to the threshold value F. If it is less than or equal to the threshold value F, it is not adjusted again. If it is still greater than the threshold value F, it is continuously adjusted until the actual operating noise E of the outdoor unit 1 is less than or equal to the threshold value F.

[0106] Wherein, after adjusting the operating parameters each time, the actual operating noise can be detected and judged immediately whether it meets the requirements, or it can be detected and judged after a period of time. When the operating parameters are adjusted each time, the noise change after the parameter adjustment is left for a period of time, so that the influence of the parameter adjustment on the noise size can be fully reflected, and the actual operating noise of the outdoor unit detected again is more stable and accurate. In this way, it can prevent inaccurate detection and judgment, so as to avoid excessive or insufficient adjustment, and therefore, a more accurate and reliable noise reduction process can be realized, and the noise reduction effect and the air conditioning effect can be more effectively considered.

[0107] For example, in some embodiments, reducing the frequency of the compressor 4 includes: after reducing the frequency of the compressor 4 at a time, interval time t1, judging whether the actual operating noise E of the outdoor unit 1 is greater than the threshold value F, and in the case that the actual operating noise E of the outdoor unit 1 is greater than the threshold value F at the interval time t1, reducing the frequency of the compressor 4 again. Based on this, after adjusting the frequency of the compressor each time, E and F are not detected and judged immediately, but are detected and judged after the interval time t1. In this way, the noise change after the compressor frequency reduction is left for a period of time, so that the actual operating noise of the outdoor unit detected again is more stable and accurate, effectively preventing the compressor from being reduced too much or not enough due to inaccurate detection and judgment. Therefore, a more accurate and reliable noise reduction process can be realized, and the noise reduction effect and the air conditioning effect can be more effectively considered.

[0108] Wherein, t1 can be preset, and the specific size can be set according to the actual situation. Exemplarily, t1 is 1-10 min, for example, t1 is 1-9 min, specifically, it can be 1 min, 2 min, 3 min, 4 min, 5 min, 6 min, 7 min, 8 min or 9 min. At this time, the size of t1 is more appropriate, which can detect more stable and accurate outdoor unit noise value after each time the compressor is reduced in frequency, prevent the interval time from being too long, and affect the noise reduction efficiency and effect, and can realize a more accurate and reliable noise reduction process, and more effectively balance the noise reduction effect and air conditioning effect.

[0109] As a further improvement of the foregoing embodiments, see Figure 2 and Figure 4 The air conditioner outdoor unit noise reduction method further comprises: S300, after adjusting 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 value F, an interval time t2 is determined whether the actual operating noise E of the outdoor unit 1 is greater than the threshold value F; S400, in the case that the actual operating noise E of the outdoor unit 1 is greater than the threshold value F at the interval time t2, 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 value F.

[0110] The steps S300 and S400 make that after the actual operating noise of the outdoor unit is reduced to less than or equal to the threshold value F in step S200, the noise reduction is not directly stopped, but after the interval time t2, the actual noise of the outdoor unit is detected and judged again whether it meets the requirements, and in the case that the actual noise of the outdoor unit does not meet the requirements after the interval time t2, step S200 is repeated to reduce the noise again, which can prevent the noise from exceeding the standard again in the interval time t2, affecting the user's comfort, and therefore, a more reliable noise reduction process can be realized, the noise comfort can be improved more effectively, and the noise reduction demand of the user can be better met.

[0111] Wherein, t2 can be preset, and the specific size can be set according to the actual situation. Exemplarily, t2 is 10-30 min, for example, 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 size of t2 is more appropriate, which can detect more stable and accurate noise value after each time step S200 is executed, prevent the interval time from being too long, and affect the noise reduction efficiency and effect, and can realize a more accurate and reliable noise reduction process, and more effectively balance the noise reduction effect and air conditioning effect.

[0112] In the foregoing embodiments, the threshold value F can be preset. For example, in some embodiments, the threshold value F is determined based on user demand, or determined based on user demand and distance loss E.

[0113] The user demand can reflect a noise upper limit value (which can be referred to as a comfortable noise Fs) that can be borne by the user, and can be determined according to user settings or automatically determined by a data model. For example, in some embodiments, the user sets the comfortable noise Fs to 40 db (decibels) by inputting on an air conditioner remote control or the like, and the comfortable noise Fs can be used as the user demand. For another example, in some embodiments, a comfortable noise data model is stored in the controller, and during operation, the controller automatically determines the current comfortable noise Fs according to the corresponding comfortable noise data model, and the determined comfortable noise Fs can be used as the user demand.

[0114] Whether the threshold value F is determined based on user demand or determined based on user demand and distance loss E, means that the determination of the threshold value F takes into account the user demand. Since the user demand can reflect the comfortable noise size desired by the user, when the threshold value F is determined, the user demand is considered, and the outdoor unit noise can be reduced to a level that is more in line with the user's requirements, effectively improving the user experience.

[0115] The distance loss refers to the loss of noise due to distance, specifically, refers to the loss of noise within the propagation distance from the outdoor unit 1 to the indoor unit. The noise size is directly related to the propagation distance, and the installation position of the outdoor unit affects the size of the noise after the noise propagates from the outdoor unit to the indoor unit. The farther the installation position, the smaller the noise decibel value after the noise propagates to the indoor unit. It is not difficult to understand that the relationship between the actual operating noise E of the outdoor unit, the distance loss E, and the indoor noise G is G = E- E. The indoor noise G can be detected at the indoor unit, especially, the indoor noise G can be detected at the indoor unit when the indoor and outdoor background noises are relatively small, so that the indoor noise G detected in this way is less affected by other interference and is closer to the true value of the noise after the noise propagates to the indoor unit. Based on the corresponding G value, the distance loss E can be more accurately determined.

[0116] Based on the user demand and the distance loss E to determine the threshold value F means that when the threshold value F is determined, not only the size of the comfortable noise Fs desired by the user is considered, but also the noise loss of the noise from the outdoor unit to the indoor unit is considered. In this way, the distance loss E can be used to correct the noise, for example, the distance loss E can be used to correct the noise satisfying the requirement E ≤ Fs to E- E≤Fs, i.e., E≤Fs+ E, so that the threshold F is obtained as the comfortable noise Fs and the distance loss E, i.e., F=Fs+ E, so that a more accurate threshold F can be obtained, and the outdoor unit noise control can be better optimized to prevent neglecting the distance loss E, resulting in a smaller threshold F, excessive noise reduction, and excessive weakening of the air conditioning capacity output, and excessive sacrifice of the air conditioning effect.

[0117] wherein the 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 distance loss E is determined according to the formula G=E- E. Specifically, in some embodiments, multiple sets of outdoor unit operating noise and corresponding indoor noise G are detected in advance, and the distance loss E is determined according to the formula G=E- E, and the multiple sets of distance loss E are averaged to obtain a more accurate distance loss E value, so that the noise reduction effect and the air conditioning effect can be more effectively balanced.

[0118] Next, further embodiments are introduced. Figures 2-4 as shown in the embodiments.

[0119] As Figures 2-4 shown, in this embodiment, the outdoor unit maximum operating noise Emax, the time period noise corresponding relationship, the fan frequency noise corresponding relationship, the water pump gear noise corresponding relationship, and the distance loss E are determined in advance to form a data model stored in the controller, and the outdoor unit 1 is reduced in noise as follows.

[0120] Based on the distance loss E determined in advance, and the comfortable noise Fs set by the user, the threshold F is determined according to the formula F=Fs+ E, and the size of the current background noise A is determined according to the time period noise corresponding relationship and the current time period, then, referring to Figure 3 , it is judged whether the outdoor unit maximum operating noise Emax is greater than the background noise A, i.e., whether Emax>A.

[0121] 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.

[0122] 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.

[0123] 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.

[0124] 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.

[0125] 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.

[0126] 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.

[0127] 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.

[0128] More specifically, in this embodiment, in the case of E>F, first determine whether the current running noise of the fan 2 and the water pump 3 is greater than the threshold F, if greater, first adjust the frequency of the fan 2 and the gear of the water pump 3; if less than or equal to, then adjust the frequency of the compressor 4. Figure 4

[0129] In the process of adjusting the frequency of the fan 2 and the gear of the water pump 3, the fan 2 can be adjusted first, and then the water pump 3.

[0130] In the actual adjustment process, only a small amount of adjustment of the fan 2 may be required, so that E≤F, and in this case, there is no need to adjust the water pump 3 and the compressor 4, but only to limit the frequency of the fan 2, so that the fan 2 runs at a frequency less than or equal to the adjusted frequency, and the water pump 3 and the compressor 4 are freely adjusted according to the load, and after a time interval t2 (for example, 10 minutes), it is determined again whether E>F.

[0131] Or, even if the fan 2 is adjusted to the noise B less than or equal to the threshold F, E>F may still occur, and in this case, the gear of the water pump 3 can be adjusted under the condition of limiting the frequency of the fan 2. If the adjustment of the water pump 3 can make E≤F, then there is no need to adjust the compressor 4, but only to limit the frequency of the fan 2 and the gear of the water pump 3, and to freely adjust the compressor 4 according to the load, and then after a time interval t2, it is determined again whether E>F; and if even if the water pump 3 is adjusted to the noise D less than or equal to the threshold F, it is still impossible to make E≤F, but E>F still occurs, then the frequency of the compressor 4 is started to be adjusted.

[0132] In the process of adjusting the frequency of the compressor 4, the compressor 4 can be reduced in frequency by a preset amplitude P of 2Hz, and after each reduction of 2Hz, the interval time t1 (less than t2, for example, 1 minute) is determined whether E>F, if E>F, it means that the outdoor unit noise does not meet the requirements, therefore, the compressor 4 continues to be reduced in frequency until E≤F; if E≤F, the frequency of the compressor 4 is limited so that the compressor 4 runs at a frequency less than or equal to the adjusted frequency, and then after a time interval t2, it is determined again whether E>F.

[0133] If after the interval time t2, E>F, return to the step of determining whether the current running noise of the fan 2 and the water pump 3 is greater than the threshold F, and adjust the running parameters again until after the interval time t2, E≤F.

[0134] If after the interval time t2, E≤F, it is considered that the outdoor unit noise can stably and reliably meet the user's demand, therefore, the noise reduction limit is stopped, and the whole machine freely adjusts within the adjustment result range according to the load demand.

[0135] ​It can be seen that, in this embodiment, before determining whether to adjust the outdoor unit parameter to reduce noise according to whether the actual running noise E of the outdoor unit is greater than the threshold F, the size relationship between the maximum running noise Emax of the outdoor unit and the background noise A and the threshold F is determined in sequence, and only in the case that the maximum running noise Emax of the outdoor unit is greater than the background noise A, whether the maximum running noise Emax of the outdoor unit is greater than the threshold F is determined, and only in the case that the maximum running noise Emax of the outdoor unit is greater than the threshold F, whether the actual running noise E of the outdoor unit 1 is greater than the threshold F is determined. Different situations of whether noise reduction is needed and whether the running parameter adjustment can effectively reduce noise can be effectively distinguished, so that the running parameter is adjusted only in the case that noise reduction is needed and the running parameter adjustment can effectively reduce noise, and noise reduction is not performed in the case that noise reduction is not needed or the running parameter adjustment cannot effectively reduce noise. In this way, in the case that noise reduction is needed and the running parameter adjustment can effectively reduce noise, a better noise reduction effect can be achieved, and the user comfort is improved. In the case that noise reduction is not needed or the running parameter adjustment cannot effectively reduce noise, the output of the outdoor unit 1 is not limited, and a better noise reduction effect is achieved. Therefore, on the basis of achieving a better noise reduction effect, the air conditioning effect can be effectively considered.

[0136] In addition, in the process of adjusting the running parameter of the outdoor unit, the influence degree of the noises of the fan 2, the water pump 3 and the compressor 4 on the noise of the outdoor unit and the air conditioning effect, and the difficulty degree of adjustment of the three are comprehensively considered, and the adjustment is performed in the order of the fan 2, the water pump 3 and the compressor 4. The noise reduction effect and the air conditioning effect can be more effectively considered.

[0137] Furthermore, the threshold F used in the noise reduction process can change with the user-set Fs, and therefore, the user's requirement for noise can be more effectively met, and the noise comfort is better improved. In addition, the threshold F also considers the distance loss E, and therefore, the noise reduction control can be better optimized, and the air conditioning effect is not affected by too much weakening of the unit capacity due to neglect of the distance loss E. Therefore, the noise reduction effect and the air conditioning effect can be further effectively considered.

[0138] In addition, the background noise A used in the noise reduction process is the background noise A of the current period, so that the background noise A of different periods can be used to optimize the noise control and the capacity output control, balance the load demand and the user's noise requirement, and this is also conducive to more effectively considering the noise reduction effect and the air conditioning effect.

[0139] Therefore, the outdoor unit noise reduction process of this embodiment can be automated and intelligent, the outdoor unit noise can be quickly reduced to meet the user's requirement, and the user experience is improved. In the process of reducing the outdoor unit noise, the capacity output of the air conditioner can be balanced, and the air conditioning effect can be effectively considered.

[0140] The air conditioner outdoor unit noise reduction method of the foregoing embodiments can be performed under the control of a controller. Therefore, the application also provides a controller. The corresponding controller includes a memory and a processor coupled to the memory. The processor is configured to execute the air conditioner outdoor unit noise reduction method of any embodiment based on instructions stored in the memory.

[0141] In addition, the application also provides a computer readable storage medium and a computer program product. The computer readable storage medium stores computer instructions. The computer instructions are executed by a processor to perform the air conditioner outdoor unit noise reduction method of any embodiment. The computer program product includes a computer program. When the computer program is executed by the processor, the air conditioner outdoor unit noise reduction method of any embodiment is implemented.

[0142] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the application rather than limit them; although the application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the specific embodiments of the application can be modified or some technical features can be replaced by equivalent ones, which should be covered in the technical solution range claimed by the application.

Claims

1. An air conditioner outdoor unit noise reduction method, characterized by, Comprising: determining whether a maximum operating noise Emax of an outdoor unit (1) of an air conditioner is greater than at least one of a background noise A and a threshold value F, and determining whether an actual operating noise E of the outdoor unit (1) is greater than the threshold value F in a case where the maximum operating noise Emax of the outdoor unit (1) is greater than at least one of the background noise A and the threshold value F; adjusting an operating parameter of the outdoor unit (1) so that the actual operating noise E of the outdoor unit (1) is reduced to be less than or equal to the threshold value F in a case where the actual operating noise E of the outdoor unit (1) is greater than the threshold value F; Wherein, the threshold value F is determined based on user demand, or based on user demand and distance loss E is determined, the distance loss E is the loss of noise within the propagation distance from the outdoor unit (1) to the indoor.

2. The air conditioner outdoor unit noise reduction method of claim 1, wherein, determining whether a maximum operating noise Emax of an outdoor unit (1) of an air conditioner is greater than at least one of a background noise A and a threshold value F, and determining whether an actual operating noise E of the outdoor unit (1) is greater than the threshold value F in a case where the maximum operating noise Emax of the outdoor unit (1) is greater than at least one of the background noise A and the threshold value F comprises: determining whether the maximum operating noise Emax of the outdoor unit (1) is greater than the background noise A; determining whether the maximum operating noise Emax of the outdoor unit (1) is greater than the threshold value F in a case where the maximum operating noise Emax of the outdoor unit (1) is greater than the background noise A; determining whether the actual operating noise E of the outdoor unit (1) is greater than the threshold value F in a case where the maximum operating noise Emax of the outdoor unit (1) is greater than the threshold value F.

3. The outdoor unit noise reduction method of claim 1, wherein, adjusting the operating parameter of the outdoor unit (1) comprises at least one of: adjusting an operating parameter of a fan (2) of the outdoor unit (1); adjusting an operating parameter of a water pump (3) of the outdoor unit (1); adjusting an operating parameter of a compressor (4) of the outdoor unit (1). 4.The noise reduction method of the air conditioner outdoor unit according to claim 3, characterized in that, adjusting the operating parameter of the outdoor unit (1) comprises at least one of: adjusting the operating parameter of the fan (2) of the outdoor unit (1) comprises reducing a frequency of the fan (2); adjusting the operating parameter of the water pump (3) of the outdoor unit (1) comprises reducing a gear of the water pump (3); adjusting the operating parameter of the compressor (4) of the outdoor unit (1) comprises reducing a frequency of the compressor (4); adjusting the operating parameter of at least one of the fan (2) and the water pump (3) of the outdoor unit (1) and then adjusting the operating parameter of the compressor (4) of the outdoor unit (1). 5.The noise reduction method of the air conditioner outdoor unit according to claim 4, characterized in that, adjusting the operating parameter of the outdoor unit (1) comprises at least one of: reducing the frequency of the fan (2) comprises reducing the frequency of the fan (2) so that an actual operating noise B of the fan (2) is less than or equal to the threshold value F in a case where the actual operating noise B of the fan (2) is greater than the threshold value F; reducing the gear of the water pump (3) comprises reducing the gear of the water pump (3) so that an actual operating noise D of the water pump (3) is less than or equal to the threshold value F in a case where the actual operating noise D of the water pump (3) is greater than the threshold value F; reducing the frequency of the compressor (4) comprises reducing the frequency of the compressor (4) by a preset amplitude P; The frequency of the compressor (4) is reduced, including: after the frequency of the compressor (4) is reduced once, determining whether the actual operation noise E of the outdoor unit (1) is greater than the threshold F at an interval time t1, and reducing the frequency of the compressor (4) again in the case that the actual operation noise E of the outdoor unit (1) is greater than the threshold F at the interval time t1. The method further comprises: adjusting the operation parameter of at least one of the fan (2) and the water pump (3) of the outdoor unit (1), including: adjusting the operation parameter of the fan (2) first, and then adjusting the operation parameter of the water pump (3). 6.The noise reduction method of the air conditioner outdoor unit according to claim 5, characterized in that, The method further comprises: adjusting the operation parameter of at least one of the fan (2) and the water pump (3) of the outdoor unit (1), including: adjusting the operation parameter of the fan (2) first, and then adjusting the operation parameter of the water pump (3). The method further comprises: adjusting the operation parameter of at least one of the fan (2) and the water pump (3) of the outdoor unit (1), including: adjusting the operation parameter of the fan (2) first, and then adjusting the operation parameter of the water pump (3). The method further comprises: adjusting the operation parameter of at least one of the fan (2) and the water pump (3) of the outdoor unit (1), including: adjusting the operation parameter of the fan (2) first, and then adjusting the operation parameter of the water pump (3). The method further comprises: adjusting the operation parameter of at least one of the fan (2) and the water pump (3) of the outdoor unit (1), including: adjusting the operation parameter of the fan (2) first, and then adjusting the operation parameter of the water pump (3). The preset amplitude P is 1-10 Hz; and / or, the interval time t1 is 1-10 min. 7.The noise reduction method of the air conditioning outdoor unit according to claim 5, characterized in that, The preset amplitude P is 2-10 Hz; and / or, the interval time t1 is 1-9 min. 8.The noise reduction method of the air conditioning outdoor unit according to claim 7, characterized in that, The actual operation noise B of the fan (2) is determined according to an actual operation frequency of the fan (2) and a fan frequency noise corresponding relationship; and / or, the actual operation noise D of the water pump (3) is determined according to an actual operation gear of the water pump (3) and a water pump gear noise corresponding relationship. 9.The noise reduction method of the air conditioning outdoor unit according to claim 4, characterized in that, The fan frequency noise corresponding relationship is obtained by detecting noise values of the fan (2) at different frequencies when only the fan (2) of the outdoor unit (1) is turned on; and / or, the water pump gear noise corresponding relationship is obtained by detecting noise values of the water pump (3) at different gears when only the water pump (3) of the outdoor unit (1) is turned on. 10.The noise reduction method of the air conditioning outdoor unit according to claim 9, characterized in that, The method further comprises:

11. The air conditioner outdoor unit noise reduction method of any one of claims 1-10, wherein, The method further comprises: adjusting the operation parameter of at least one of the fan (2) and the water pump (3) of the outdoor unit (1), including: adjusting the operation parameter of the fan (2) first, and then adjusting the operation parameter of the water pump (3). The method further comprises: adjusting the operation parameter of at least one of the fan (2) and the water pump (3) of the outdoor unit (1), including: adjusting the operation parameter of the fan (2) first, and then adjusting the operation parameter of the water pump (3). The interval time t2 is 10-30 min. 12.The noise reduction method of the air conditioner outdoor unit according to claim 11, characterized in that, The background noise A is determined according to a current time period of the outdoor unit (1) and a time period noise corresponding relationship.

13. The air conditioner outdoor unit noise reduction method of any one of claims 1-10, wherein, The time period noise corresponding relationship is obtained by detecting noise values of different time periods when the outdoor unit (1) is in standby mode. 14.The noise reduction method of the air conditioner outdoor unit according to claim 13, characterized in that, ​ 15. A controller characterized by comprising: The application further provides a computer readable storage medium storing computer instructions, wherein the computer instructions are executed by a processor to implement the air conditioner outdoor unit noise reduction method according to any one of claims 1-14.

16. An air conditioner comprising an outdoor unit (1), characterized in that, The application further provides a controller according to claim 15.

17. A computer readable storage medium characterized by: The application further provides a computer readable storage medium storing computer instructions, wherein the computer instructions are executed by a processor to implement the air conditioner outdoor unit noise reduction method according to any one of claims 1-14. 18.A computer program product comprising a computer program which, when executed by a processor, implements the air conditioner outdoor unit noise reduction method according to any one of claims 1-14.

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