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

Abstract

The present disclosure provides an air conditioning unit, a noise control method thereof, a computer readable storage medium and a control device. The air conditioning unit is used for air conditioning of a conditioning area having multiple rooms. The noise control method comprises: determining a target room corresponding to a user position from the multiple rooms according to positioning indication information; determining whether to change an operating parameter of the air conditioning unit to reduce 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 a maximum noise value allowed for the target room. The computer readable storage medium and the control device are configured to implement the aforementioned noise control method. The air conditioning unit comprises the aforementioned control device. The present disclosure can better match the actual noise reduction effect of the air conditioning unit with the user's expected noise reduction effect.

Description

Technical Field

[0001] This disclosure relates to the field of air conditioning noise reduction, and in particular to an air conditioning unit and its noise control method, computer-readable storage medium, and control device. Background Technology

[0002] For residential hot water units, noise from components such as compressors, fans, and water pumps is a common problem affecting user comfort. Noise levels increase significantly, especially when the unit is operating under high load, such as when the compressor runs at high frequency or the fan runs at high speed.

[0003] However, in related technologies, the noise control methods for air conditioning units such as hot water units are difficult to match well with the actual noise reduction effect of the air conditioning units and the noise reduction effect expected by users. Summary of the Invention

[0004] The purpose of this disclosure is to provide an air conditioning unit and its noise control method, computer-readable storage medium, and control device to better match the actual noise reduction effect of the air conditioning unit with the noise reduction effect expected by the user.

[0005] The first aspect of this disclosure provides a noise control method for an air conditioning unit used for air conditioning in a multi-room controlled area, comprising:

[0006] Based on the location indication information, determine the target room corresponding to the user's location from among the multiple rooms;

[0007] Based on the noise value n0 generated by the noise source of the air conditioning unit and the noise threshold n of the target room max (xi) Determine whether to change the operating parameters of the air conditioning unit to reduce the noise generated by the air conditioning unit;

[0008] Wherein, the noise threshold n max (xi) represents the maximum allowable noise level for the target room.

[0009] In some embodiments, 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:

[0010] 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

[0011] If n0≤n max (xi)+Δn(xi), keeping the current operating parameters unchanged;

[0012] Wherein, Δn(xi) represents the amount of noise attenuation during the propagation process from the noise source to the target room.

[0013] In some embodiments, the operating parameters are re-determined based on a first correspondence between the operating parameters and the noise value n0 under different operating conditions and a second correspondence between the operating parameters and the capability value Q under different operating conditions.

[0014] In some embodiments, the operating parameters include compressor frequency f and fan speed s.

[0015] The first correspondence includes a noise function n(f,s), which is obtained by fitting the noise value n0 corresponding to the compressor frequency f and the fan speed s under different operating conditions; and / or

[0016] The second correspondence includes a capability function Q(f,s), which is obtained by fitting the capability value Q corresponding to the compressor frequency f and the fan speed s under different operating conditions.

[0017] In some embodiments, the positioning indication information includes the signal strength of a positioning signal emitted by a signal source.

[0018] In some embodiments, there are at least two signal sources, and the positions of the at least two signal sources are different from each other.

[0019] In some embodiments, before determining the target room, while the air conditioning unit is in operation, room information corresponding to each room is collected, including:

[0020] 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 are detected.

[0021] Determine the noise threshold n for each of the rooms. max (x);

[0022] Based on the noise value n0 and the noise value n(x) of each room, the attenuation Δn(x) corresponding to the noise propagating from the noise source to each room is obtained.

[0023] In some embodiments, the method includes determining a corresponding noise threshold based on the purpose of each room.

[0024] A second aspect of this disclosure provides a computer-readable storage medium having a computer program stored thereon that, when executed by a processor, implements the noise control method for an air conditioning unit according to a first aspect of this disclosure.

[0025] A third aspect of this disclosure provides a control device, characterized in that it comprises:

[0026] Memory; and

[0027] A processor, coupled to the memory, is configured to execute the noise control method according to the first aspect of this disclosure based on instructions stored in the memory.

[0028] A fourth aspect of this disclosure provides an air conditioning unit including the control device described in the third aspect of this disclosure.

[0029] In some embodiments, including:

[0030] Outdoor unit;

[0031] A signal transmitting module, located in the outdoor unit, is configured to emit a positioning signal required to determine the target room; and

[0032] The interactive terminal, which is signal-connected to the control device and the signal transmitting module, is configured to be carried by the user and to receive the positioning signal.

[0033] The noise control method for air conditioning units disclosed herein uses location indication information as a basis. Different rooms correspond to different location indication information, which can be used to identify the user's current specific room location and respond to changes in the user's location in real time. Furthermore, 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 noise. This difference is then compared with the noise threshold n of the target room. max (xi) By comparison, it is possible to more accurately determine whether there is a need for noise reduction at the user's location. Compared with noise control methods that estimate noise based solely on fixed parameters such as the unit's own operating parameters, or methods that require manual intervention by the user to reduce noise, the noise control method provided in this disclosure can determine whether it is necessary to reduce the noise generated by the air conditioning unit by combining the actual sound insulation characteristics of the room and the user's location.

[0034] Therefore, the noise control method provided in this disclosure can better match the actual noise reduction effect of the air conditioning unit with the noise reduction effect expected by the user.

[0035] The computer-readable storage medium provided in this disclosure stores a program capable of executing the noise control method provided in the embodiments of this disclosure, and therefore has the advantages of the noise control method provided in this disclosure.

[0036] The control device provided in this disclosure can execute the noise control method provided in this disclosure, and therefore has the advantages of the noise control method provided in this disclosure.

[0037] The air conditioning unit provided in this disclosure can execute the noise control method provided in the embodiments of this disclosure based on the control device provided in this disclosure, and therefore has the advantages of the noise control method and control device of this disclosure.

[0038] Other features and advantages of this disclosure will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0039] The accompanying drawings, which are included to provide a further understanding of this disclosure and form part of this application, illustrate exemplary embodiments of this disclosure and are used to explain this disclosure, but do not constitute an undue limitation of this disclosure.

[0040] Figure 1 This is a schematic diagram of the structure of the outdoor unit of an air conditioning unit according to some embodiments of this disclosure.

[0041] Figure 2 This is a schematic diagram illustrating the distribution of noise sources and multiple rooms in the regulation area of ​​the air conditioning unit in some embodiments of this disclosure.

[0042] Figure 3 This is a schematic flowchart of a noise control method according to some embodiments of the present disclosure.

[0043] Figure 4 This is a flowchart illustrating a noise control method according to some other embodiments of this disclosure.

[0044] Figure 5 This is a flowchart illustrating the process of obtaining the noise function and capability function in some embodiments of this disclosure.

[0045] Figure 6 This is a schematic diagram of the process for collecting room information in some embodiments of this disclosure.

[0046] Figure 7 This is a schematic diagram of the structure of a control device according to some embodiments of the present disclosure.

[0047] Figure 8 This is a schematic diagram illustrating the control principle of an air conditioning unit according to some embodiments of this disclosure.

[0048] In the attached figures, the various reference numerals represent:

[0049] 1. Outdoor unit; 10. Unit body; 11. Fan; 12. Compressor;

[0050] 2. Signal transmitting module;

[0051] 3. Interactive terminal;

[0052] 4. Control device; 41. Memory; 42. Processor;

[0053] x1, First Bedroom; x2, Second Bedroom; x3, Dining Room; x4, Living Room; x5, Study; x6, Balcony. Detailed Implementation

[0054] The technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this disclosure or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0055] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of this disclosure. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0056] In the description of this disclosure, it should be understood that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this disclosure.

[0057] In the description of this disclosure, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings and is only for the convenience of describing this disclosure and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this disclosure; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0058] refer to Figures 1 to 7The present disclosure provides a noise control method for an air conditioning unit, a computer-readable storage medium, a control device, and an air conditioning unit.

[0059] The air conditioning unit provided in the embodiments of this disclosure is used for air conditioning in a controlled area with multiple rooms. The air conditioning unit may be a heat pump unit, such as a hot water unit. To better illustrate the noise control method of the air conditioning unit, the usage scenario of the air conditioning unit is described below first.

[0060] Figure 1 The following are some embodiments of the present disclosure showing the structure of the outdoor unit 1 of an air conditioning unit. The outdoor unit 1 includes a body 10, a fan 11 and a compressor 12, with the fan 11 and compressor 12 disposed inside the body 10.

[0061] The inventors discovered through research that the mechanical vibration and airflow noise generated during the operation of the compressor 12 are among the main sources of noise. The fan 11 is usually integrated with the condenser or evaporator and is located near the compressor 12. The airflow noise generated by the fan 11 when it is running at high speed is also an important component of the unit noise. Adjustments to the compressor frequency f and the fan speed s will affect the noise level.

[0062] Figure 2 The distribution of noise sources and regulated areas of multiple rooms in an air conditioning unit is shown in some embodiments of this disclosure. Figure 2 Different colors are used to represent the differences in noise intensity in each room due to their different positions relative to the air conditioning unit, without noise reduction adjustments. For example, areas such as the first bedroom x1, living room x4, study x5, and balcony x6, which are closer to the air conditioning unit, have higher noise levels and are marked in red; while areas such as the second bedroom x2 and dining room x3, which are farther away from the air conditioning unit, have lower noise levels because the noise attenuates along the propagation path and are marked in green.

[0063] The inventors discovered through research that noise emitted by air conditioning units is attenuated by obstacles such as walls and furniture during propagation. Related technologies typically estimate noise based solely on the unit's own operating parameters, leading to discrepancies between actual noise reduction and user expectations. Furthermore, noise reduction methods often rely on fixed parameters or manual user intervention, failing to dynamically perceive changes in the user's environment, such as movement within the room. For instance, while a user may manually set the air conditioning unit to silent mode, it might still be operating in silent mode when moving from the bedroom to the living room, resulting in insufficient heating capacity.

[0064] refer to Figures 3 to 6The noise control method for an air conditioning unit provided in the embodiments of this disclosure includes: determining a target room corresponding to a user's location from multiple rooms based on positioning indication information; and controlling the noise based on the noise value n0 generated by the noise source of the air conditioning unit, the attenuation amount Δn(xi) of the noise during its propagation from the noise source to the target room, and the noise threshold n of the target room. max (xi) determines whether to change the operating parameters of the air conditioning unit to reduce the noise generated by the unit. Wherein, the noise threshold n max (xi) represents the maximum allowable noise level for the target room.

[0065] Optionally, the location indication information may be information such as the strength of the wireless signal that changes with the room's location, thereby indirectly reflecting whether the user is inside a certain room, or information such as video information or image information that can directly reflect whether the user is inside a certain room.

[0066] Optionally, the noise sources of the air conditioning unit include the fan 11 and the compressor 12, and the aforementioned operating parameters include the compressor frequency f and the fan speed s.

[0067] The embodiments of this disclosure are applicable to situations where a single user is in a single room, multiple users are in a single room, and multiple users are in multiple rooms. In the case of multiple users in multiple rooms, multiple target rooms corresponding one-to-one with the locations of the multiple users can be determined based on multiple sets of location indication information.

[0068] The noise control method for air conditioning units provided in this disclosure uses location indication information as a basis. Different rooms correspond to different location indication information, which can be used to identify the specific room location of the user and respond to changes in the user's location in real time. Furthermore, 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. This difference is compared with the noise threshold n of the target room. max (xi) By comparison, it is possible to more accurately determine whether there is a need for noise reduction at the user's location. Compared with noise control methods that estimate noise based solely on fixed parameters such as the unit's own operating parameters, or methods that require manual intervention by the user to reduce noise, the noise control method of the embodiments of this disclosure can determine whether it is necessary to reduce the noise generated by the air conditioning unit by combining the actual sound insulation characteristics of the room and the user's location.

[0069] Therefore, the noise control method provided by the embodiments of this disclosure can better match the actual noise reduction effect of the air conditioning unit with the noise reduction effect expected by the user.

[0070] Further research revealed that noise control methods for air conditioning units in related technologies cannot simultaneously achieve noise reduction and maximize cooling / heating capacity. For example, in hot water units, manually selecting a silent mode to reduce noise can lead to a decrease in heating capacity; while when rapid heating is required, noise control may be sacrificed.

[0071] refer to Figure 4 In some embodiments of the noise control method, the noise value n0, the attenuation amount Δn(xi), and the noise threshold n are used as the basis for the noise control. 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 can be maximized.

[0072] The capacity value Q is used to represent the cooling or heating capacity of an air conditioning unit. For example, for a hot water unit, the capacity value Q can be calculated using the inlet and outlet water temperature difference and water flow rate at the user end of the hot water unit: Q = c * q * ρ * (T) 出 -T 进 (), where c represents the specific heat capacity of water, q represents the water flow rate, ρ represents the density of water, and T 出 This indicates the outlet water temperature at the user end, T 进 This indicates the inlet water temperature at the user's end.

[0073] Optionally, the maximum value of the capability value Q can be found using a multi-objective optimization algorithm, such as linear programming, numerical optimization, real-time optimization, machine learning, or other algorithms capable of finding the capability value Q.

[0074] In this embodiment, if n0 > n max (xi)+Δn(xi) indicates that the noise generated by the air conditioning unit is attenuated during its propagation from the noise source to the target room. However, the noise level in the target room still exceeds the maximum allowable noise level. In this case, it can be determined that the target room where the user is located needs noise reduction.

[0075] This embodiment takes into account the propagation and attenuation of noise in different rooms within the control area, and reduces the noise value n(xi) of the target room to the noise threshold n. max Using the noise reduction target (xi) and below as constraints, and seeking the operating parameters that maximize the capacity value Q, we can maximize the heating or cooling capacity of the air conditioning unit while meeting the noise reduction requirements, so that the heating / cooling capacity does not drop too much, thus taking into account both the noise reduction requirements and the cooling / heating requirements.

[0076] refer to Figure 4In some embodiments of the noise control method, the noise value n0, the attenuation amount Δn(xi), and the noise threshold n are used as the basis for the noise control. max (xi) Determining whether to change the operating parameters includes: if n0≤n max (xi)+Δn(xi), keep the current operating parameters unchanged.

[0077] In this embodiment, if n0≤n max (xi)+Δn(xi) indicates that the noise generated by the air conditioning unit is attenuated during its propagation from the noise source to the target room, and the noise level in the target room does not exceed the maximum allowable noise level. Therefore, it can be determined that the target room where the user is located does not require noise reduction. By keeping the current operating parameters unchanged, it is beneficial to maintain the current cooling or heating effect on the regulated area and reduce unnecessary impact on the cooling or heating capacity of the air conditioning unit.

[0078] In some embodiments of the noise control method, the operating parameters are re-determined based on a first correspondence between operating parameters and noise value n0 under different operating conditions and a second correspondence between operating parameters and capability value Q under different operating conditions.

[0079] Optionally, the first and second correspondences can be presented as continuous functions or data sets.

[0080] In this embodiment, the first and second correspondences can be obtained through testing under laboratory conditions before the air conditioning unit leaves the factory. The relevant data of the first and second correspondences can be stored in the control device of the air conditioning system, which can fully reflect the changes in the noise value generated by the noise source of the air conditioning unit and the changes in the cooling or heating capacity under different operating conditions and different operating parameters. In this way, the first and second correspondences associate the noise value n0 and the capacity value Q through the same set of operating parameters, providing support for solving the maximum value of the capacity value Q under the constraints.

[0081] In some embodiments of the noise control method, 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 obtained by fitting the noise value n0 corresponding to the compressor frequency f and the fan speed s under different operating conditions.

[0082] In some embodiments of the noise control method, the operating parameters include the compressor frequency f and the fan speed s. The second correspondence includes a capability function Q(f,s), which is obtained by fitting the capability values ​​Q corresponding to the compressor frequency f and the fan speed s under different operating conditions.

[0083] In this embodiment, reference Figure 5The noise function and capacity function can be obtained through laboratory testing before the air conditioning unit leaves the factory. The relevant data of the noise function and capacity function can be stored in the control device of the air conditioning system, which can fully reflect the changes in the noise value generated by the noise source of the air conditioning unit and the changes in the cooling or heating capacity under different operating conditions, different compressor frequencies f and fan speeds s.

[0084] Compressor frequency f and fan speed s are important factors affecting the noise and capacity values ​​of air conditioning units, forming the core variables of the noise function and capacity function. Based on the compressor frequency f and fan speed s, the noise function can be used to calculate the noise value n0 generated by the noise source. Furthermore, considering that noise sources such as fan 11 and compressor 12 are usually located in the outdoor unit of the air conditioning unit, the noise value n0 calculated using the noise function can reduce interference from other noises in the environment compared to directly measuring the noise value n0, thus improving the accuracy of determining whether the noise value of the target room exceeds the maximum allowable value. The capacity function, on the other hand, can be used to calculate the heating or cooling capacity of the air conditioning unit under constraints.

[0085] In some embodiments of the noise control method, the positioning indication information includes the signal strength of the positioning signal emitted by the signal source.

[0086] The signal source can be located at the outdoor unit 1 of the air conditioning unit, or in one or more rooms within the controlled area, or outside the controlled area, as long as the location of the signal receiver can be determined based on the signal strength of the emitted positioning signal. The signal source can be a wireless signal source, such as a WiFi module, Bluetooth module, or GPS signal source. Optionally, refer to... Figure 1 The signal source is the signal transmission module 2 located on the body 10 of the outdoor unit 1.

[0087] The positioning signal can be a wireless signal, such as a WiFi signal or a Bluetooth signal. Correspondingly, the signal source can be a WiFi module, a Bluetooth module, etc. The signal strength of the positioning signal can be represented by RSSI (Received Signal Strength Indicator).

[0088] This embodiment uses the signal strength of the positioning signal as the location indication information to determine the user's room. The signal strength of the positioning signal changes with the relative position of the room and the signal source. Therefore, at least one signal source is needed, and the signal strength of the positioning signal emitted by that source is sufficient to determine the target room. Furthermore, fewer parameters are required to determine the target room. Compared to using detection information from cameras, infrared sensors, or millimeter-wave radar as location indication information, this embodiment's positioning method does not require setting up detection devices in each of multiple rooms, thus balancing convenience and accuracy in determining the target room corresponding to the user's location.

[0089] In some embodiments of the noise control method, there are at least two signal sources, and the positions of the at least two signal sources are different from each other.

[0090] Optionally, the multiple signal sources include a first signal source and a second signal source. The first signal source is a signal transmitting module 2 installed on the outdoor unit 1 of the air conditioning unit. Optionally, the second signal source is located in the regulating area, for example, it may be a WiFi module installed on the display panel of the air conditioning unit in one or more rooms, or an electrical appliance with WiFi function installed in one or more rooms.

[0091] In this embodiment, by setting at least two signal sources with different locations, a positioning method similar to three-point positioning can be formed, which is beneficial to further improve the positioning accuracy. When the signal strength emitted by the signal source fluctuates, or when at least two rooms in multiple rooms are close to the air conditioning unit and have similar room structures, the positioning method of this embodiment is beneficial to accurately identify the target room where the user is located.

[0092] refer to Figure 6 In some embodiments of the noise control method, before determining the target room, while the air conditioning unit is running, room information corresponding to each room is collected, 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; and determining the noise threshold n for each room. max (x); Based on the noise value n0 and the noise value n(x) of each room, obtain the attenuation Δn(x) of the noise during the process of propagating from the noise source to each room.

[0093] Optionally, the signal strength SI(x) of each room is detected by a mobile terminal with WiFi signal receiving capability, 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 acquisition capability. 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.

[0094] Optionally, the collected room information can be presented in the form of a mapping table or other formats, as long as it can reflect the signal strength SI(x), attenuation Δn(x), and noise threshold n in the room. max The correspondence of (x) can be found.

[0095] After the air conditioning unit is installed but before it is put into formal operation, the noise threshold n for each room in the adjustment area can be set through the steps in this embodiment. max The room information, including noise level n(x), attenuation Δn(x), and signal strength SI(x), is calibrated and correlated. Signal strength SI(x) can be used as positioning indication information, and noise threshold n... max (x) and the attenuation amount Δn(x) can be used as noise reduction requirement information, thus forming a one-to-one correspondence between "location indication information - room - noise reduction requirement information", and using this as the basis for subsequently determining the target room corresponding to the user's location and whether to implement noise reduction control.

[0096] In some embodiments of the noise control method, a corresponding noise threshold is determined based on the purpose of each room.

[0097] For example, refer to Figure 2 In the first bedroom x1 and the second bedroom x2, the user's noise reduction needs are relatively strong, and the noise threshold n max (xi) can be set to 30dB; on the balcony (x6), the user's noise reduction needs are relatively weak, and the noise threshold n max (xi) can be set to 50dB.

[0098] In this embodiment, the noise threshold is determined either by manually setting it or automatically based on the room's purpose. Optionally, the air conditioning unit includes an interactive terminal 3, which is configured to acquire the purpose information of each room and the corresponding noise threshold in response to user input. Optionally, the air conditioning unit includes an interactive terminal 3, which is configured to acquire the purpose information of each room in response to user input and determine the corresponding noise threshold based on the purpose information.

[0099] In this embodiment, the noise threshold of each room can be flexibly determined according to its own purpose, thereby reducing the redundancy of noise thresholds in some rooms. Since the noise value Q0 and capacity value Q of the air conditioning unit will change with the same operating parameters such as compressor frequency f and fan speed s, this method of determining the noise threshold can minimize the adverse effects of noise reduction adjustment of the air conditioning unit on its cooling or heating capacity.

[0100] The embodiments of this disclosure provide a computer-readable medium storing a computer program that, when executed by a processor, implements the noise control method provided in the embodiments of this disclosure.

[0101] The computer-readable storage medium provided in the embodiments of this disclosure stores a program capable of executing the noise control method provided in the embodiments of this disclosure, and therefore has the advantages of the noise control method provided in the embodiments of this disclosure.

[0102] refer to Figure 7 The control device 4 provided in the embodiments of this disclosure includes a memory 41 and a processor 42 coupled to the memory 41. The processor 42 is configured to execute the noise control method provided in the embodiments of this disclosure based on instructions stored in the memory 41.

[0103] The control device provided in the embodiments of this disclosure is capable of executing the noise control method provided in the embodiments of this disclosure, and therefore has the advantages of the noise control method provided in the embodiments of this disclosure.

[0104] The air conditioning unit provided in the embodiments of this disclosure includes the control device 4 provided in the embodiments of this disclosure.

[0105] The air conditioning unit provided in the embodiments of this disclosure can execute the noise control method provided in the embodiments of this disclosure based on the control device provided in the embodiments of this disclosure, and therefore has the advantages of the noise control method and control device of the embodiments of this disclosure.

[0106] refer to Figure 1 , Figure 2 and Figure 8 In some embodiments of the air conditioning unit, the air conditioning unit includes an outdoor unit 1, a signal transmitting module 2, and an interactive terminal 3. The signal transmitting module 2 is disposed on the outdoor unit 1 and is configured to emit a positioning signal required to determine the target room. The interactive terminal 3 is signal-connected to the control device 4 and the signal transmitting module 2, and is configured to be carried by the user and receive the positioning signal.

[0107] The signal transmitting module 2 serves as the signal source required to determine the 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 the communication interface provided on the body 10.

[0108] The interactive terminal 3 can be a physical terminal, such as a hardware terminal like an air conditioner remote control; or a virtual terminal, such as a software terminal like an app provided by the air conditioning unit manufacturer and integrated into interactive devices like mobile phones, smartwatches, and smart bracelets.

[0109] Optionally, the air conditioning unit includes a fan 11 and a compressor 12. The control device 4 is signal-connected to the fan 11 and the compressor 12 to calculate the noise value n0 based on the compressor frequency f and the fan speed s, and to calculate the noise value n0, the attenuation Δn(xi), and the noise threshold n based on the noise value n0, the attenuation Δn(xi), and the noise threshold n. max(xi) Determine whether to re-determine the compressor frequency f and fan speed s, when n0 > n max (xi)+Δn(xi), adjust the frequency f of compressor 12 and the speed s of fan 11 according to the redefined compressor frequency f and fan speed s.

[0110] In this embodiment, the interactive terminal 3 is carried by the user and can reflect the user's real-time location. Thus, the control device can determine the target room where the user is located based on the signal strength of the positioning signal received by the interactive terminal, and then determine whether to perform noise reduction control.

[0111] The following describes in detail, with reference to the accompanying drawings, some embodiments of the air conditioning unit and its noise control method of this disclosure.

[0112] The air conditioning unit includes an outdoor unit 1, a fan 11 and a compressor 12 installed on the body 10 of the outdoor unit 1, a WiFi module that serves as a signal transmission module 2 and is installed on the outdoor unit 1, an interactive terminal 3, and a control device 4.

[0113] The noise reduction control principles and methods for air conditioning units mainly include the following:

[0114] 1. Pre-shipment calibration and model establishment

[0115] In a laboratory environment, multiple tests were conducted on the air conditioning unit. By adjusting the compressor frequency f and fan speed s, the noise value n and capacity value Q under different operating conditions were collected. The noise function n(f,s) and capacity function Q(f,s) were established. These mathematical models provide a basis for subsequent dynamic control of noise at the user's location.

[0116] For example, for a certain model of air conditioning unit, its noise function n(f,s)=20+0.3f+0.03s and its capacity function Q(f,s)=0.2f+0.01s.

[0117] 2. Post-installation user calibration and room mapping table construction

[0118] Users complete room calibration via a mobile app: First, the phone wirelessly connects to the air conditioner unit's WiFi module. Then, the noise level n0 in the vicinity of the air conditioner unit (e.g., the location of outdoor unit 1) is measured. Users then enter each room sequentially, inputting the purpose of each room (e.g., "bedroom," "living room," "study") as prompted by the app, and measuring the background noise level n(x). The system calculates Δn(x) = n(x) - n0 to obtain the attenuation of noise propagating from the air conditioner unit's location to each room, and determines the sound insulation characteristics of each room accordingly. Simultaneously, the app identifies the user's location based on WiFi signal strength and sets the maximum permissible noise level n based on the room's purpose. max(x), and finally integrate the collected data into a room mapping table, recording Δn(x), n, and n for each room. max (x) and WiFi signal strength (expressed as RSSI value). Table 1 provides an example. Figure 2 Room mapping table for the middle section of the rooms.

[0119] Table 1 Room Mapping Table

[0120] First bedroom x1 <![CDATA[{Δn(x1)=7dB,n max (x1)=30dB,RSSI(x1)=−30dBm}]]> 3 restaurants <![CDATA[{Δn(x3)=10dB,n max (x3)=35dB, RSSI(x3)=−70dBm Balcony x6 <![CDATA[{Δn(x6)=3dB,n max (x6)=45dB,RSSI(x6)=−10dBm}]]>

[0121] 3. Real-time noise detection and parameter optimization during operation

[0122] During the operation of the air conditioning unit, the user's location is continuously detected by the WiFi signal strength, and the noise constraints of the user's current room are obtained by matching a room mapping table. If the noise value n0 > n calculated in real time according to the noise function n(f,s) max Given (xi) + Δn(xi), the system will activate a noise reduction mechanism, using optimization algorithms to maximize the cooling or heating capacity of the air conditioning unit while meeting noise limits. For example, the maximum value of the capacity Q can be found through linear programming or numerical optimization, while ensuring that n0 ≤ n max (xi)+Δn(xi) finally outputs the optimal compressor frequency f and fan speed s, and adjusts the unit operating parameters accordingly.

[0123] For example, if the air conditioning unit is currently operating at a compressor frequency of f=50Hz and a fan speed of s=500rpm, then according to the noise function n(f,s)=20+0.3f+0.03s, the noise level of the air conditioning unit can be calculated as n0=50dB(A). If the APP detects a WiFi signal strength of -30dBm from the WiFi module, then it can be determined that the user is currently in the first bedroom x1. n is calculated based on the room mapping table. max (x1)+Δn(x1)=37dB. Since n0>37dB at this time, the noise reduction processing mechanism will be triggered. The control device 4 uses an optimization algorithm, with n0≤37dB as the constraint condition, and further adds the constraints s≥100rpm and f≥25Hz according to the energy consumption requirements of the air conditioning unit, to solve for the maximum capacity value Q, and obtain the optimal solution of f=27Hz and s=300rpm, and adjust the compressor frequency f and fan speed s accordingly.

[0124] 4. Dynamic adjustment and continuous monitoring

[0125] The air conditioning unit updates its noise control strategy in real time based on changes in the user's location and environment, ensuring that the unit maintains a balance between low noise and high energy efficiency in different scenarios. For example, when a user moves from the first bedroom x1 to the balcony x6, the system automatically switches to the noise constraints of the balcony x6 and readjusts its operating parameters to adapt to the new environmental requirements.

[0126] Therefore, the noise control method for air conditioning units based on the above embodiments of this disclosure can achieve accurate response to user location, room characteristics and air conditioning unit operation requirements, and take into account both noise control and energy efficiency optimization, which can significantly improve user experience and air conditioning unit operating efficiency.

[0127] In some embodiments, the control device described above may 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 devices, discrete gate or transistor logic devices, discrete hardware components, or any suitable combination thereof for performing the functions described herein.

[0128] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and not to limit them; although this disclosure has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this disclosure or equivalent substitutions can be made to some technical features, all of which should be covered within the scope of the technical solutions claimed in this disclosure.

Claims

1. A noise control method for an air conditioning unit, the air conditioning unit being used for air conditioning in a multi-room conditioning zone, characterized in that, include: Based on the positioning indication information, a target room corresponding to the user's location is determined from a plurality of rooms, wherein the positioning indication information includes the signal strength of the positioning signal emitted by the signal source; Based on the noise value n0 generated by the noise source of the air conditioning unit, the attenuation Δn(xi) of the noise during its propagation from the noise source to the target room, and the noise threshold n of the target room. max (xi) Determine 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) represents the maximum permissible noise level for the target room; Before determining the target room, while the air conditioning unit is in operation, room information corresponding to each room is collected, 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, and determining the noise threshold n for each room. max (x), based on the noise value n0 and the noise value n(x) of each room, obtain the attenuation amount Δn(x) corresponding to the noise propagating from the noise source to each room.

2. The noise control method according to claim 1, characterized in that, 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 (xi)+Δn(xi), keeping the current operating parameters unchanged.

3. The noise control method according to claim 2, characterized in that, Based on the first correspondence between the operating parameters and the noise value n0 under different operating conditions, and the second correspondence between the operating parameters and the capability value Q under different operating conditions, the operating parameters are re-determined.

4. The noise control method according to claim 3, characterized in that, The operating parameters include compressor frequency f and fan speed s. The first correspondence includes a noise function n(f,s), which is obtained by fitting the noise value n0 corresponding to the compressor frequency f and the fan speed s under different operating conditions; and / or The second correspondence includes a capability function Q(f,s), which is obtained by fitting the capability value Q corresponding to the compressor frequency f and the fan speed s under different operating conditions.

5. The noise control method according to claim 1, characterized in that, The signal source is at least two, and the positions of the at least two signal sources are different from each other.

6. The noise control method according to any one of claims 1 to 4, characterized in that, include: The corresponding noise threshold is determined based on the purpose of each room.

7. A computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the noise control method for an air conditioning unit according to any one of claims 1 to 6.

8. A control device (4), characterized in that, include: Memory (41); and A processor (42) coupled to the memory (41) is configured to execute the noise control method according to any one of claims 1 to 6 based on instructions stored in the memory (41).

9. An air conditioning unit, characterized in that, Includes the control device (4) according to claim 8.

10. The air conditioning unit according to claim 9, characterized in that, include: Outdoor unit (1); A signal transmitting module (2), located in the outdoor unit (1), is configured to emit a positioning signal required to determine the target room; and The interactive terminal (3), which is signal connected to the control device (4) and the signal transmitting module (2), is configured to be carried by the user and to receive the positioning signal.

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