Air conditioning unit, noise control method of air conditioning unit, computer readable storage medium and control device

Abstract

The invention provides an air conditioning unit, a noise control method of the air conditioning unit, a computer readable storage medium and a control device. The air conditioning unit is used for air conditioning of an adjusting area with multiple rooms, and the noise control method comprises the steps that a target room corresponding to the position of a user is determined from the multiple rooms according to positioning indication information; according to a noise value n0 generated by a noise source of the air conditioning unit and a noise threshold nmax (xi) of the target room, whether operation parameters of the air conditioning unit are changed or not is determined, so that noise generated by the air conditioning unit is reduced; wherein the noise threshold nmax (xi) is the maximum noise value allowed by the target room. The computer readable storage medium and the control device are configured to implement the noise control method. The air conditioning unit comprises the control device. The actual noise reduction effect of the air conditioning unit and the noise reduction effect expected by a user can be better matched.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the field of air conditioner noise reduction, and in particular, to an air conditioning unit, a noise control method thereof, a computer readable storage medium, and a control device. BACKGROUND

[0002] For household water heater units, the noise generated by components such as compressors, fans, and water pumps is a common problem affecting user comfort. In particular, when the unit is operating at high load, such as when the compressor is operating at high frequency and the fan is operating at high speed, the noise level will increase significantly.

[0003] However, in the related art, the noise control method for air conditioning units such as water heater units is difficult to better match the actual noise reduction effect of the air conditioning unit with the user's expected noise reduction effect. SUMMARY

[0004] The purpose of the present disclosure is to provide an air conditioning unit, a noise control method thereof, a computer readable storage medium, and a control device to better match the actual noise reduction effect of the air conditioning unit with the user's expected noise reduction effect.

[0005] A first aspect of the present disclosure provides a noise control method for an air conditioning unit for air conditioning of a conditioning area having a plurality of rooms, comprising: determining a target room corresponding to a user position from the plurality of rooms according to positioning indication information; determining whether to change an operating parameter of the air conditioning unit to reduce the noise generated by the air conditioning unit according to a noise value n0 generated by a noise source of the air conditioning unit and a noise threshold n max (xi) of the target room. wherein the noise threshold n max (xi) is the maximum noise value allowed by the target room.

[0006] In some embodiments, determining whether to change the operating parameter according to the noise value n0, the attenuation amount Δn(xi), and the noise threshold n max (xi) includes: if n0 > n max (xi) + Δn(xi), changing the operating parameter to n0 ≤ n max (xi) + Δn(xi) as a constraint condition, re-determining the operating parameter to maximize the capacity value Q of the air conditioning unit; and / or if n0 ≤ n max (xi) + Δn(xi), keeping the current operating parameter unchanged. wherein Δn(xi) represents the attenuation amount of noise in the process of propagating from the noise source to the target room.

[0007] In some embodiments, the operating parameter is re-determined according to a first correspondence between the operating parameter and the noise value n0 under different working conditions and a second correspondence between the operating parameter and the capacity value Q under different working conditions.

[0008] In some embodiments, the operating parameter comprises a compressor frequency f and a fan speed s, The first correspondence comprises a noise function n(f, s) fitted by the noise values n0 corresponding to the compressor frequency f and the fan speed s under different working conditions; and / or The second correspondence comprises a capacity function Q(f, s) fitted by the capacity values Q corresponding to the compressor frequency f and the fan speed s under different working conditions.

[0009] In some embodiments, the positioning indication information comprises a signal strength of a positioning signal emitted by a signal source.

[0010] In some embodiments, the signal source is at least two, and the positions of the at least two signal sources are different.

[0011] In some embodiments, before determining the target room, room information corresponding to each of the rooms is collected in the operating state of the air conditioning unit, comprising: detecting a noise value n0 generated by the noise source, noise values n(x) of each of the rooms, and signal strengths SI(x) of each of the rooms; determining the noise threshold n max (x) of each of the rooms; obtaining the attenuation amount Δn(x) of noise in the process of propagation from the noise source to each of the rooms according to the noise value n0 and the noise values n(x) of each of the rooms.

[0012] In some embodiments, it comprises: determining the corresponding noise threshold according to the use of each of the rooms.

[0013] The second aspect of the present disclosure provides a computer readable storage medium having a computer program stored thereon, the program being executed by a processor to implement the noise control method of the air conditioning unit according to the first aspect of the present disclosure.

[0014] The third aspect of the present disclosure provides a control device, characterized in that it comprises: a memory; and a processor coupled to the memory, the processor being configured to execute the noise control method according to the first aspect of the present disclosure based on instructions stored in the memory.

[0015] The fourth aspect of the present disclosure provides an air conditioning unit, comprising the control device according to the third aspect of the present disclosure.

[0016] In some embodiments, comprising: An outdoor unit; A signal emitting module, disposed in the outdoor unit, configured to emit a positioning signal required for determining the target room; and An interactive terminal, in signal connection with the control device and the signal emitting module, configured to be carried by a user and receive the positioning signal.

[0017] The noise control method of the air conditioning unit provided by the present disclosure takes the positioning indication information as the basis, the positioning indication information corresponding to different rooms is different, which can be used to identify the specific room position where the user is currently located, and the position change of the user can be responded in real time, and the difference between the noise value n0 and the attenuation amount Δn(xi) of the target room can represent the noise value n(xi) of the target room, which can more accurately reflect the actual propagation effect of the noise. By comparing the difference with the noise threshold n max (xi) of the target room, it can be more accurately judged whether the position where the user is located has a noise reduction demand. Compared with the noise control method based on only the running parameters of the unit itself and other fixed parameters to estimate the noise, or the manual intervention of the user to reduce the noise, the noise control method provided by the present disclosure can combine the sound insulation characteristics of the actual room and the position where the user is located to judge whether the noise generated by the air conditioning unit needs to be reduced.

[0018] Therefore, the noise control method provided by the present disclosure can better match the actual noise reduction effect of the air conditioning unit and the noise reduction effect expected by the user.

[0019] The computer readable storage medium provided by the present disclosure stores a program capable of executing the noise control method provided by the embodiments of the present disclosure, and therefore has the advantages of the noise control method provided by the present disclosure.

[0020] The control device provided by the present disclosure can execute the noise control method provided by the present disclosure, and therefore has the advantages of the noise control method provided by the present disclosure.

[0021] The air conditioning unit provided by the present disclosure can execute the noise control method provided by the embodiments of the present disclosure based on the control device provided by the present disclosure, and therefore has the advantages of the noise control method and the control device provided by the present disclosure.

[0022] Other features of the present disclosure and its advantages will become apparent from the following detailed description of exemplary embodiments thereof, with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0023] The accompanying drawings, which are included to provide a further understanding of the present disclosure and constitute a part of this application, illustrate certain illustrative embodiments of the present disclosure and together with the general description of the present disclosure given above and the detailed description of each illustrative embodiment given below, serve to explain the present disclosure, but do not limit the present disclosure.

[0024] Figure 1 Structure diagram of an outdoor unit of an air conditioning unit according to some embodiments of the present disclosure.

[0025] Figure 2 Distribution diagram of noise sources of an air conditioning unit and multiple rooms of a conditioned area according to some embodiments of the present disclosure.

[0026] Figure 3 Flow diagram of a noise control method according to some embodiments of the present disclosure.

[0027] Figure 4 Flow diagram of a noise control method according to some other embodiments of the present disclosure.

[0028] Figure 5 Flow diagram of obtaining a noise function and a capability function according to some embodiments of the present disclosure.

[0029] Figure 6 Flow diagram of collecting room information according to some embodiments of the present disclosure.

[0030] Figure 7 Structure diagram of a control device according to some embodiments of the present disclosure.

[0031] Figure 8 Control principle diagram of an air conditioning unit according to some embodiments of the present disclosure.

[0032] In the drawings, various reference numerals represent the following: 1, outdoor unit; 10, body; 11, fan; 12, compressor; 2, signal transmitting module; 3, interactive terminal; 4, control device; 41, memory; 42, processor; x1, first bedroom; x2, second bedroom; x3, dining room; x4, living room; x5, study; x6, balcony. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present disclosure will be described clearly and completely in the embodiments of the present disclosure in combination with the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, rather than all the embodiments. The description of the at least one example embodiment is actually only illustrative, but not as any limitation on the present disclosure and its application or use. Based on the embodiments in the present disclosure, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of the present disclosure.

[0034] The relative arrangement, numerical expressions and numerical values of the components and steps set forth in the embodiments are not limiting the scope of the present disclosure, unless otherwise specifically stated. Meanwhile, it should be understood that the sizes of the various parts shown in the drawings are not drawn in accordance with the actual proportional relationship for the convenience of description. The techniques, methods and devices known to those of ordinary skill in the related art can not be discussed in detail, but should be considered as part of the specification under appropriate circumstances. In all examples shown and discussed herein, any specific value should be interpreted as merely exemplary, and not as a limitation. Therefore, other examples of the example embodiments can have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0035] In the description of the present disclosure, it should be understood that the use of the words "first", "second", and the like to qualify elements is merely for the convenience of distinguishing the corresponding elements, and the above words have no special meaning unless otherwise stated, and therefore cannot be understood as limiting the scope of protection of the present disclosure.

[0036] In the description of the present disclosure, 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 positional relationship shown in the drawings, which is only for the convenience of describing the present disclosure and simplifying the description, and in the absence of contrary statements, these orientation words do not indicate and imply that the indicated device or element must have a particular orientation or be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the scope of protection of the present disclosure; the orientation words "inner, outer" refer to the inner and outer relative to the contour of each component.

[0037] Reference Figures 1 to 7 The embodiments of the present disclosure provide a noise control method for an air conditioning unit, a computer readable storage medium, a control device and an air conditioning unit.

[0038] Embodiments of the present disclosure provide an air conditioning unit for air conditioning of a conditioning area having multiple rooms. The air conditioning unit can be a heat pump unit, such as a hot water unit, etc. In order to better illustrate the noise control method of the air conditioning unit, the use scenario of the air conditioning unit is first described below.

[0039] Figure 1 The structure of the outdoor unit 1 of the air conditioning unit in some embodiments of the present disclosure is shown. The outdoor unit 1 includes a machine body 10, a fan 11 and a compressor 12, and the fan 11 and the compressor 12 are arranged inside the machine body 10.

[0040] The inventors have found through research that the mechanical vibration and airflow noise generated when the compressor 12 is running are one of the main noise sources. The fan 11 is usually integrated with a condenser or an evaporator and located near the compressor 12. The airflow noise generated when the fan 11 is running at high speed is also an important component of the unit noise, and the adjustment of the compressor frequency f and the fan speed s will affect the noise level.

[0041] Figure 2 The noise sources of the air conditioning unit and the distribution of the multiple rooms of the conditioning area are shown in some embodiments of the present disclosure. Figure 2 The intensity difference of the noise generated in each room due to the different positions relative to the air conditioning unit is shown in the figure without noise reduction adjustment. For example, the first bedroom x1, the living room x4, the study x5 and the balcony x6, etc. are close to the air conditioning unit, and the noise value is high, which is marked in red. The second bedroom x2 and the dining room x3, etc. are far away from the air conditioning unit, and the noise value is low due to the attenuation of the noise along the propagation path, which is marked in green.

[0042] The inventors have found through research that the noise emitted by the air conditioning unit will be affected by the attenuation of obstacles such as walls and furniture during propagation. The related art usually estimates the noise only based on the operating parameters of the unit itself, resulting in a deviation between the actual noise reduction effect and the user's expectation. Moreover, the noise reduction method usually relies on fixed parameters or user manual intervention, and cannot dynamically perceive the changes of the environment in which the user is located, such as the movement of the user in the room. For example, although the user can manually set the air conditioning unit to silent mode, when the user moves from the bedroom to the living room, the unit may still run in silent mode, resulting in insufficient heating capacity.

[0043] Reference Figures 3 to 6 The noise control method of the air conditioning unit provided by the embodiments of the present disclosure includes: determining a target room corresponding to the user position from the multiple rooms according to the positioning indication information; determining a noise value n0 generated by a noise source of the air conditioning unit, an attenuation amount Δn(xi) of the noise in the process of propagation from the noise source to the target room, and a noise threshold n max(xi), determining whether to change the operating parameters of the air conditioning unit to reduce the noise generated by the air conditioning unit. Wherein, the noise threshold n max (xi) the maximum noise value allowed for the target room.

[0044] Optionally, the positioning indication information can be information such as the strength of a wireless signal that changes with the room position, thereby indirectly reflecting whether the user is inside a certain room, or information such as video information and image information that can directly reflect whether the user is inside a certain room.

[0045] Optionally, the noise source of the air conditioning unit includes the fan 11 and the compressor 12, and the aforementioned operating parameters include the compressor frequency f and the fan speed s.

[0046] Embodiments of the present disclosure are applicable to the case where a single user is in a single room, multiple users are in a single room, and multiple users are in multiple rooms. For the case where multiple users are in multiple rooms, multiple target rooms corresponding to the positions of the multiple users can be determined according to multiple sets of positioning indication information.

[0047] The noise control method of the air conditioning unit provided by the embodiments of the present disclosure takes the positioning indication information as the basis, the positioning indication information corresponding to different rooms is different, which can be used to identify the specific room position where the user is currently located, and the position change of the user can be responded in real time, and the difference between the noise value n0 and the attenuation amount Δn(xi) of the target room can represent the noise value n(xi) of the target room, which can more accurately reflect the actual propagation effect of the noise. The difference is compared with the noise threshold n max (xi) comparison, it can be more accurately judged whether the user's position has a noise reduction demand, compared with the noise control method based on only the operating parameters of the unit itself and other fixed parameters to estimate the noise, or the user manually intervenes in the noise reduction. The noise control method of the embodiments of the present disclosure can combine the sound insulation characteristics of the actual room and the position of the user to determine whether the noise generated by the air conditioning unit needs to be reduced.

[0048] As can be seen, the noise control method provided by the embodiments of the present disclosure can better match the actual noise reduction effect of the air conditioning unit and the user's expected noise reduction effect.

[0049] The inventors have found through further research that the noise control method of the air conditioning unit in the related art is difficult to simultaneously achieve noise reduction and maximum refrigeration / heating capacity. For example, in a hot water unit, manually selecting a silent mode to reduce noise will result in a decrease in heating capacity; and when rapid heating is required, the noise control effect may be sacrificed.

[0050] Reference Figure 4 In the noise control method of some embodiments, the noise value n0, the attenuation amount Δn(xi), and the noise threshold nmax (xi) determining whether to change the operating parameters comprises: if n0>n max (xi) + Δn(xi), to make n0≤n max (xi) + Δn(xi), re-determining the operating parameters so as to maximize the capacity value Q of the air conditioning unit.

[0051] The capacity value Q is used to represent the refrigeration capacity or heating capacity of the air conditioning unit. For example, for a hot water unit, the capacity value Q can be calculated by the temperature difference between the inlet and outlet water at the user end of the hot water unit and the water flow, Q = c * q * p * (T 出 -T 进 ), where c represents the specific heat capacity of water, q represents the water flow, p represents the density of water, T 出 represents the outlet water temperature at the user end, and T 进 represents the inlet water temperature at the user end.

[0052] Alternatively, the maximum value of the capacity value Q can be solved by a multi-objective optimization algorithm, for example, a linear programming algorithm, a numerical optimization algorithm, a real-time optimization algorithm, a machine learning algorithm, or other algorithms capable of solving the capacity value Q.

[0053] In this embodiment, if n0>n max (xi) + Δn(xi), it indicates that the noise generated by the air conditioning unit is attenuated in the process of propagating from the noise source to the target room, and the noise value of the target room still exceeds the maximum allowed noise value, at this time it can be judged that the target room where the user is located needs to be de-noised.

[0054] This embodiment considers the propagation and attenuation of noise in different rooms in the adjustment area, and reduces the noise value n(xi) of the target room to the noise threshold n max (xi) as a constraint condition, and seeks the operating parameters that maximize the capacity value Q, which can maximize the heating capacity or refrigeration capacity of the air conditioning unit on the basis of meeting the de-noising demand, so that the heating / cooling capacity does not decrease too much, thereby balancing the de-noising demand and the refrigeration / heating demand.

[0055] Reference Figure 4 In some embodiments of the noise control method, according to the noise value n0, the attenuation amount Δn(xi) and the noise threshold n max (xi) determining whether to change the operating parameters comprises: if n0≤n max (xi) + Δn(xi), the current operating parameters remain unchanged.

[0056] In this embodiment, if n0≤n max(xi) + Δn(xi) indicates that the noise generated by the air conditioning unit is attenuated in the process of propagating from the noise source to the target room, and the noise value of the target room does not exceed the maximum allowable noise value, at which time it can be judged that the target room where the user is located does not need to be de-noised. By keeping the current operating parameters unchanged, the current cooling or heating effect on the regulated area is maintained, and unnecessary impact on the cooling or heating capacity of the air conditioning unit is reduced.

[0057] In the noise control method of some embodiments, the operating parameters are re-determined according to the first correspondence between the operating parameters and the noise values n0 under different working conditions and the second correspondence between the operating parameters and the capacity values Q under different working conditions.

[0058] Optionally, the first correspondence and the second correspondence can be presented in the form of a continuous function or a data set.

[0059] In this embodiment, the first correspondence and the second correspondence can be obtained by testing under laboratory conditions before the air conditioning unit is shipped. The related data of the first correspondence and the second correspondence can be stored in the control device of the air conditioning system, which can fully reflect the changes of the noise values generated by the noise source of the air conditioning unit and the changes of the cooling or heating capacity under different working conditions and different operating parameters. In this way, the first correspondence and the second correspondence associate the noise values n0 and the capacity values Q through the same set of operating parameters, providing support for solving the maximum value of the capacity value Q under the constraint condition.

[0060] In the noise control method of some embodiments, the operating parameters include the compressor frequency f and the fan speed s. The first correspondence includes a noise function n(f, s), which is fitted by the noise values n0 corresponding to the compressor frequency f and the fan speed s under different working conditions.

[0061] In the noise control method of some embodiments, the operating parameters include the compressor frequency f and the fan speed s. The second correspondence includes a capacity function Q(f, s), which is fitted by the capacity values Q corresponding to the compressor frequency f and the fan speed s under different working conditions.

[0062] In this embodiment, with reference to Figure 5 , the noise function and the capacity function can be obtained by laboratory testing before the air conditioning unit is shipped. The related data of the noise function and the capacity function can be stored in the control device of the air conditioning system, which can fully reflect the changes of the noise values generated by the noise source of the air conditioning unit and the changes of the cooling or heating capacity under different working conditions and different compressor frequencies f and fan speeds s.

[0063] The compressor frequency f and the fan rotating speed s are important factors affecting the noise value and the capacity value of the air conditioning unit, and jointly constitute the core variables of the noise function and the capacity function. According to the compressor frequency f and the fan rotating speed s, the noise function can be used to calculate the noise value n0 generated by the noise source. Considering that the noise sources such as the fan 11 and the compressor 12 are usually arranged in the outdoor unit part of the air conditioning unit, compared with directly measuring the noise value n0, the noise value n0 calculated by using the noise function can reduce the interference of other noises in the environment, and is beneficial to improving the accuracy of judging whether the noise value of the target room exceeds the allowed maximum value. The capacity function can be used to calculate the heating capacity or the cooling capacity of the air conditioning unit under the constraint condition.

[0064] In the noise control method of some embodiments, the positioning indication information includes the signal strength of the positioning signal emitted by the signal source.

[0065] The signal source can be arranged in the outdoor unit 1 of the air conditioning unit, or arranged in one or more rooms in the regulated area, or arranged outside the regulated area, as long as the position of the signal receiving end can be judged according to the signal strength of the positioning signal emitted by the signal source. The signal source can be a wireless signal source, for example, it can be a WiFi module, a Bluetooth module or a GPS signal source. Optionally, referring to Figure 1 , the signal source is a signal emitting module 2 arranged in the body 10 of the outdoor unit 1.

[0066] The positioning signal can be a wireless signal such as a WiFi signal, a Bluetooth signal, etc., and correspondingly, the signal source can be a WiFi module, a Bluetooth module, etc., and the signal strength of the positioning signal can be represented by RSSI (Received Signal Strength Indicator).

[0067] In this embodiment, the signal strength of the positioning signal is used as the positioning indication information to determine the room where the user is located. The signal strength of the positioning signal changes with the change of the relative position of the room and the signal source, so at least one signal source is used, and the signal strength of the positioning signal emitted by the signal source can achieve the purpose of determining the target room, and the parameters required to determine the target room are less. Compared with using the detection information of the camera, the infrared sensor or the millimeter wave radar as the positioning indication information, the positioning method of this embodiment does not need to arrange detection devices in each room, and can consider the convenience and accuracy of positioning when determining the target room corresponding to the user's position.

[0068] In the noise control method of some embodiments, the signal source is at least two, and the positions of the at least two signal sources are different.

[0069] Optionally, the plurality of signal sources comprises a first signal source and a second signal source, the first signal source being a signal transmitting module 2 arranged on the outdoor unit 1 of the air conditioning unit. Optionally, the second signal source is arranged in the conditioned area, for example, it can be a WiFi module arranged on the display panel of the air conditioning unit in one or more rooms, or an electric appliance with WiFi function arranged in one or more rooms.

[0070] In this embodiment, by arranging at least two signal sources with different positions, a positioning mode similar to three-point positioning can be formed, which is beneficial to further improve the accuracy of positioning. In the case of fluctuations in the signal strength of the signal source, or in the case that the distances of at least two rooms in the plurality of rooms to the air conditioning unit are similar and the room structures are similar, the positioning mode of this embodiment is beneficial to accurately identify the target room in which the user is located.

[0071] Reference Figure 6 In the noise control method of some embodiments, before determining the target room, the room information of each room is collected in the running state of the air conditioning unit, including: detecting the noise value n0 generated by the noise source, the noise value n(x) of each room, and the signal strength SI(x) of each room; determining the noise threshold n max (x) of each room; and obtaining the corresponding attenuation amount Δn(x) of the noise in the process of propagating from the noise source to each room according to the noise value n0 and the noise value n(x) of each room.

[0072] Optionally, the signal strength SI(x) of each room is detected by a mobile terminal with WiFi signal receiving function, and the noise value n0 generated by the noise source and the noise value n(x) of each room are detected by a mobile terminal with sound collecting function. Optionally, the mobile terminal can be a mobile phone, and the noise value n0 and the noise value n(x) are detected by the microphone of the mobile phone.

[0073] Optionally, the collected room information can be in the form of a mapping table or other forms, as long as it can reflect the corresponding relationship between the signal strength SI(x), the attenuation amount Δn(x) and the noise threshold n max (x) in the room.

[0074] After the installation of the air conditioning unit is completed and before the formal operation, the noise threshold n max (x), the noise value n(x), the attenuation amount Δn(x), the signal strength SI(x) and other room information of each room in the conditioned area can be calibrated and associated by the steps of this embodiment, wherein the signal strength SI(x) can be used as positioning indication information, and the noise threshold n max(x) and the attenuation amount An(x) can be taken as the noise reduction demand information, so as to form a one-to-one correspondence relationship of "position indication information-room-noise reduction demand information", and to take this as the basis for subsequent determination of the target room corresponding to the position of the user and determination of whether to perform noise reduction control.

[0075] In the noise control method of some embodiments, the corresponding noise threshold value is determined according to the use of each room.

[0076] For example, referring to Figure 2 In the first bedroom x1 and the second bedroom x2, the user's noise reduction demand is strong, and the noise threshold value n max (xi) can be set to 30dB; in the balcony x6, the user's noise reduction demand is relatively weak, and the noise threshold value n max (xi) can be set to 50dB.

[0077] In this embodiment, the noise threshold value is manually set or automatically determined according to the use of the room. Alternatively, the air conditioning unit includes an interactive terminal 3, which is configured to obtain the use information of each room and the corresponding noise threshold value in response to the input operation of the user. Alternatively, the air conditioning unit includes an interactive terminal 3, which is configured to obtain the use information of each room and determine the corresponding noise threshold value according to the use information in response to the input operation of the user.

[0078] In this embodiment, the noise threshold value of each room can be flexibly determined according to its own use, so as to reduce the redundancy of the noise threshold value in some rooms. Since the noise value Q0 and the capacity value Q of the air conditioning unit will change with the same operating parameters such as the compressor frequency f and the fan speed s, this way of determining the noise threshold value can minimize the adverse effects of noise reduction adjustment of the air conditioning unit on its refrigeration capacity or heating capacity.

[0079] The computer readable medium provided by the embodiments of the present disclosure stores a computer program, which is executed by a processor to implement the noise control method provided by the embodiments of the present disclosure.

[0080] The computer readable storage medium provided by the embodiments of the present disclosure stores a program capable of executing the noise control method provided by the embodiments of the present disclosure, and therefore has the advantages of the noise control method provided by the embodiments of the present disclosure.

[0081] Referring to Figure 7 The control device 4 provided by the embodiments of the present disclosure includes a memory 41 and a processor 42 coupled to the memory 41, and the processor 42 is configured to execute the noise control method provided by the embodiments of the present disclosure based on the instructions stored in the memory 41.

[0082] The control device provided by the embodiments of the present disclosure can execute the noise control method provided by the embodiments of the present disclosure, and thus has the advantages of the noise control method provided by the embodiments of the present disclosure.

[0083] The air conditioning unit provided by the embodiments of the present disclosure comprises the control device 4 provided by the embodiments of the present disclosure.

[0084] The air conditioning unit provided by the embodiments of the present disclosure can execute the noise control method provided by the embodiments of the present disclosure based on the control device provided by the embodiments of the present disclosure, and thus has the advantages of the noise control method and the control device provided by the embodiments of the present disclosure.

[0085] Reference Figure 1 , Figure 2 and Figure 8 In some embodiments of the air conditioning unit, the air conditioning unit comprises an outdoor unit 1, a signal transmitting module 2 and an interactive terminal 3. The signal transmitting module 2 is arranged on the outdoor unit 1 and is configured to emit a positioning signal required for determining a target room. The interactive terminal 3 is in signal connection with the control device 4 and the signal transmitting module 2, is configured to be carried by a user, and receives the positioning signal.

[0086] The signal transmitting module 2 serves as a signal source required for determining a target room. The signal transmitting module 2 can be a WiFi module or a Bluetooth module. Optionally, the signal transmitting module 2 is installed on a communication interface arranged on the body 10.

[0087] The interactive terminal 3 can be a physical terminal such as a hardware terminal of an air conditioner remote controller, or a virtual terminal such as a software terminal of an APP integrated in an interactive device such as a mobile phone, a smart watch, a smart bracelet, etc. and provided by an air conditioning unit manufacturer.

[0088] Optionally, the air conditioning unit comprises a fan 11 and a compressor 12, and the control device 4 is in signal connection with the fan 11 and the compressor 12 to calculate a noise value n0 according to a compressor frequency f and a fan speed s, and to adjust the frequency f of the compressor 12 and the speed s of the fan 11 according to the noise value n0, an attenuation amount Δn(xi) and a noise threshold n max (xi) when n0>n max (xi)+Δn(xi), according to the re-determined compressor frequency f and fan speed s.

[0089] In this embodiment, the interactive terminal 3 is carried by the user and can reflect the real-time position of the user, so that the control device can determine the target room in which the user is located according to the signal strength of the positioning signal received by the interactive terminal, and then determine whether to execute noise reduction control.

[0090] The air conditioning unit and the noise control method thereof provided by some embodiments of the present disclosure will be described in detail below with reference to the drawings.

[0091] The air conditioning unit comprises an outdoor unit 1, a fan 11 and a compressor 12 arranged on the body 10 of the outdoor unit 1, a WiFi module arranged on the outdoor unit 1 as a signal transmitting module 2, an interactive terminal 3 and a control device 4.

[0092] The noise reduction control principle and method of the air conditioning unit mainly include the following contents.

[0093] 1. Pre-delivery calibration and model establishment In the laboratory environment, the air conditioning unit is tested in multiple groups, the noise value n and the capacity value Q under different working conditions are collected by adjusting the compressor frequency f and the fan speed s, the noise function n(f, s) and the capacity function Q(f, s) are established, and through these mathematical models, the noise at the user's location is provided for subsequent dynamic control.

[0094] For example, for a certain type of air conditioning unit, the noise function n(f, s) = 20 + 0.3f + 0.03s, and the capacity function Q(f, s) = 0.2f + 0.01s.

[0095] 2. User calibration and room mapping table construction after installation The user completes the room calibration through the mobile phone APP: first, the mobile phone is wirelessly connected to the WiFi module of the air conditioning unit; then, the noise value n0 of the environment near the air conditioning unit (such as the location of the outdoor unit 1) is tested, and then the user enters each room, inputs the purpose of each room (such as "bedroom", "living room", "study", etc.) under the prompt of the APP, and measures the noise value n(x) of the background noise. The system obtains the attenuation amount of the noise in the process of propagating from the location of the air conditioning unit to each room by calculating Δn(x) = n(x) - n0, and determines the sound insulation characteristics of each room accordingly. At the same time, the APP identifies the user's location through the WiFi signal strength, and sets the maximum allowed noise value n max (x) according to the purpose of the room. Finally, the collected data is integrated into a room mapping table, which records Δn(x), n max (x) and the WiFi signal strength (represented by RSSI value) of each room. Table 1 exemplarily shows the room mapping table of part of the rooms. Figure 2

[0096] Table 1 Room mapping table First bedroom x1 {Δn(x1)=7dB, n max (x1)=30dB, RSSI(x1)=−30dBm}]]> Dining room x3 {Δn(x3) = 10 dB, n max (x3) = 35 dB, RSSI(x3) = -70 dBm} Balcony x6 {Δn(x6) = 3dB, n max (x6) = 45dB, RSSI(x6) = -10dBm}]]

[0097] 3. Real-time noise detection and parameter optimization during operation ​In the running process of the air conditioning unit, the user's position is continuously detected through the WiFi signal strength, and the noise constraint condition of the room where the user is currently located is obtained by matching the room mapping table. If the noise value n0 calculated in real time according to the noise function n(f, s) is greater than n max (xi)+Δn(xi), the system will start the noise reduction processing mechanism, and maximize the refrigerating or heating capacity of the air conditioning unit under the premise of meeting the noise limit by using an optimization algorithm. For example, the maximum value of the capacity value Q is solved by linear programming or numerical optimization, while ensuring that n0≤n max (xi)+Δn(xi), and finally the optimal compressor frequency f and fan speed s are output, and the unit operating parameters are adjusted accordingly.

[0098] For example, if the air conditioning unit is currently running at a compressor frequency f = 50 Hz and a fan speed s = 500 rpm, at this time, according to the noise function n(f, s) = 20 + 0.3f + 0.03s, the noise n0 of the air conditioning unit can be calculated as 50 dB(A); At this time, the APP detects that the WiFi signal strength emitted by the WiFi module is -30 dBm, so it can be determined that the user is currently in the first bedroom x1. According to the room mapping table, n max (x1)+Δn(x1)=37dB, since n0>37dB at this time, the noise reduction processing mechanism will be triggered. The control device 4 solves the maximum capacity value Q by optimization algorithm with the constraint condition n0≤37dB, and further adds the constraint conditions s≥100rpm and f≥25Hz according to the energy consumption demand of the air conditioning unit, to obtain the optimal solution f=27Hz and s=300rpm, and accordingly adjust the compressor frequency f and the fan speed s.

[0099] 4. Dynamic adjustment and continuous monitoring The air conditioning unit updates the noise control strategy in real time according to the user's location and environmental changes, ensuring that the air conditioning unit is always in a balanced state of low noise and high energy efficiency under different scenarios. For example, when the user moves from the first bedroom x1 to the balcony x6, the system automatically switches to the noise constraint condition of the balcony x6 and adjusts the operating parameters again to adapt to the new environmental requirements.

[0100] As can be seen, the noise control method of the air conditioning unit based on the above embodiments of the present disclosure can realize accurate response to the user's position, room characteristics and air conditioning unit operating requirements, and can balance noise control and energy efficiency optimization, which can significantly improve user experience and air conditioning unit operating efficiency.

[0101] In some embodiments, the control device described above can be implemented as a general purpose processor, a Programmable Logic Controller (PLC), a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field-Programmable Gate Array (FPGA) or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, or any appropriate combination thereof, for performing the functions described in the present disclosure.

[0102] Finally, it should be noted that the above-mentioned embodiments are merely used to illustrate the technical solutions of the present disclosure rather than limit the technical solutions of the present disclosure; although the present disclosure has been described in detail with reference to the preferred embodiments, it should be understood by those of ordinary skill in the art that the specific implementation manners of the present disclosure can be modified or some technical features can be replaced by equivalent replacements, which should be included in the technical solution range of the present disclosure.

Claims

1. A noise control method for an air conditioning unit for air conditioning of a conditioned area having a plurality of rooms, characterized by, The method comprises: determining a target room corresponding to a user position from a plurality of rooms according to positioning indication information; determining whether to change an operating parameter of the air conditioning unit to reduce the noise generated by the air conditioning unit based on a noise value n0 generated by a noise source of the air conditioning unit, an attenuation amount Δn(xi) of the noise in a process of the noise propagating from the noise source to the target room, and a noise threshold value n max (xi) of the target room. wherein said noise threshold n max (xi) is the maximum noise value allowed for the target room.

2. The noise control method of claim 1, wherein, Based on the noise value n0, the attenuation Δn(xi), and the noise threshold n max (xi) Determining whether to change the operating parameters includes: If n0>n max (xi)+Δn(xi), with n0≤n max (xi)+Δn(xi) are used as constraints to redetermine the operating parameters so that the capacity value Q of the air conditioning unit reaches its maximum; and / or if n0≤ n max (x1) + Δn(x1), keeping the current operating parameters unchanged.

3. The noise control method of claim 2, wherein, re-determining the operation parameter according to a first correspondence relationship between the operation parameter and the noise value n0 under different working conditions and a second correspondence relationship between the operation parameter and the capacity value Q under different working conditions.

4. The noise control method of claim 3, wherein, The operation parameter comprises a compressor frequency f and a fan speed s, The first correspondence relationship comprises a noise function n(f, s) fitted by the noise values n0 corresponding to the compressor frequency f and the fan speed s under different working conditions; and / or The second correspondence relationship comprises a capacity function Q(f, s) fitted by the capacity values Q corresponding to the compressor frequency f and the fan speed s under different working conditions.

5. The noise control method according to any one of claims 1 to 4, characterized by, The positioning indication information comprises a signal strength of a positioning signal emitted by a signal source.

6. The noise control method of claim 5, wherein, The signal source is at least two, and the positions of the at least two signal sources are different.

7. The noise control method of claim 5, wherein, Before determining the target room, the room information corresponding to each room in the air conditioning unit running state is collected, comprising: detecting the noise value n0 generated by the noise source, the noise value n(x) of each room, and the signal strength SI(x) of each room; determining the noise threshold n for each of the rooms max (x); obtaining the corresponding attenuation amount Δn(x) of noise in the process of propagation from the noise source to each room according to the noise value n0 and the noise value n(x) of each room.

8. The noise control method according to any one of claims 1 to 4, characterized by, The method comprises: determining the corresponding noise threshold according to the use of each room.

9. A computer readable storage medium having stored thereon a computer program, which, when executed by a processor, implements the noise control method of the air conditioning unit according to any one of claims 1 to 8.

10. A control device (4) characterized by The method comprises: a memory (41); and a processor (42) coupled to the memory (41), the processor (42) being configured to execute the noise control method according to any one of claims 1 to 8 based on instructions stored in the memory (41).

11. An air conditioning unit characterized by, The control device (4) according to claim 10 is included.

12. The air conditioning unit of claim 11, wherein, The method comprises: an outdoor unit (1); a signal emitting module (2) provided in the outdoor unit (1) and configured to emit a positioning signal required for determining the target room; and an interactive terminal (3) in signal connection with the control device (4) and the signal emitting module (2) and configured to be carried by a user and receive the positioning signal.

Images