Mute control method and device for multi-split outdoor unit and multi-split equipment

Abstract

The invention discloses a multi-split outdoor unit mute control method and device and multi-split air conditioning equipment, and relates to the technical field of multi-split air conditioning equipment control, and the multi-split air conditioning equipment mute control method comprises the steps that in response to an outdoor unit mute signal, the current outdoor environment temperature and the power-on demand load ratio are obtained; determining a target operating frequency limit value and a target fan rotating speed limit value according to the current outdoor environment temperature and the startup demand load ratio; and according to the target running frequency limiting value and the target fan rotating speed limiting value, the running frequency of a compressor and the fan rotating speed of the outdoor unit are controlled, so that outdoor unit mute control is achieved. The corresponding frequency and rotating speed limit values are determined according to different outdoor environment temperatures and starting-up demand load ratios, so that the noise of the outdoor unit is controlled, the mute function of the outdoor unit can be achieved, the noise of the whole air conditioner is low during operation, and the use range of the air conditioner is widened under certain conditions.

Description

Technical Field

[0001] The present application relates to the technical field of multi-split device control, and in particular to a method and device for controlling the silent operation of a one-to-many outdoor unit and a multi-split device. Background Art

[0002] As people's demands for comfort increase, reducing the noise of outdoor units has gradually become a key selling point of products. Currently, air conditioners only focus on the quiet function of indoor units, and do not limit the noise of outdoor units.

[0003] When the outdoor unit is not properly installed, the loud noise can easily cause discomfort to yourself or your neighbors, leaving the air conditioner idle. Summary of the Invention

[0004] The main purpose of this application is to provide a method, device and multi-split device for controlling the noise of one outdoor unit, aiming to solve the technical problem of how to control the noise of the outdoor unit.

[0005] To achieve the above-mentioned purpose, the present application proposes a one-to-multiple outdoor unit mute control method, which is applied to a multi-split device, wherein the multi-split device includes: an outdoor unit and multiple indoor units;

[0006] The one-to-many outdoor unit mute control method includes:

[0007] In response to the outdoor unit mute signal, obtaining the current outdoor ambient temperature and the startup demand load ratio;

[0008] Determining a target operating frequency limit value and a target fan speed limit value according to the current outdoor ambient temperature and the startup demand load ratio;

[0009] The operating frequency of the compressor and the fan speed of the outdoor unit are controlled according to the target operating frequency limit value and the target fan speed limit value, respectively, to achieve silent control of the outdoor unit.

[0010] In one embodiment, the step of determining the target operating frequency limit value and the target fan speed limit value according to the current outdoor ambient temperature and the startup demand load ratio includes:

[0011] Determining a target temperature range for the current outdoor ambient temperature according to the current outdoor ambient temperature;

[0012] A target operating frequency limit value and a target fan speed limit value are determined according to the target temperature range and the startup demand load ratio.

[0013] In one embodiment, the step of determining a target operating frequency limit value and a target fan speed limit value according to the target temperature range and the startup demand load ratio includes:

[0014] Get the preset startup demand load ratio threshold;

[0015] When the startup demand load ratio is greater than the preset startup demand load ratio threshold, obtaining a plurality of first operating frequency limit values ​​and a plurality of first fan speed limit values;

[0016] A target operating frequency limit value is determined from a plurality of first operating frequency limit values ​​according to the target temperature range, and a target fan speed limit value is determined from a plurality of first fan speed limit values ​​according to the target temperature range.

[0017] In one embodiment, after the step of obtaining the preset startup demand load ratio threshold, the method further includes:

[0018] When the startup demand load ratio is less than or equal to the preset startup demand load ratio threshold, obtaining a plurality of second operating frequency limit values ​​and a plurality of second fan speed limit values;

[0019] A target operating frequency limit value is determined from a plurality of second operating frequency limit values ​​according to the target temperature range, and a target fan speed limit value is determined from a plurality of second fan speed limit values ​​according to the target temperature range.

[0020] In one embodiment, the step of determining the target temperature range of the current outdoor ambient temperature according to the current outdoor ambient temperature includes:

[0021] Obtaining historical outdoor ambient temperatures within a preset time period, and determining a current change trend of the outdoor ambient temperature based on the historical outdoor ambient temperatures;

[0022] A target temperature range in which the current outdoor ambient temperature falls is determined according to the current change trend and the current outdoor ambient temperature.

[0023] In one embodiment, the step of obtaining the startup demand load ratio includes:

[0024] Obtain indoor units with energy demand;

[0025] Calculate the capacity of indoor units where energy demand exists;

[0026] Calculate the outdoor unit capacity;

[0027] The startup demand load ratio is calculated based on the capacity of the indoor unit with energy demand and the capacity of the outdoor unit.

[0028] In one embodiment, the step of responding to the outdoor unit mute signal includes:

[0029] When the outdoor unit is heating or the four-way valve is turned on, detect whether the outdoor unit mute signal of any indoor unit is received;

[0030] When receiving the outdoor unit mute signal from any indoor unit, respond to the outdoor unit mute signal.

[0031] In one embodiment, the step of controlling the operating frequency of the compressor and the fan speed of the outdoor unit according to the target operating frequency limit value and the target fan speed limit value respectively includes:

[0032] The maximum operating frequency of the compressor is controlled to be less than or equal to the target operating frequency limit value, and the maximum speed of the fan of the outdoor unit is controlled to be less than or equal to the target fan speed limit value.

[0033] In addition, to achieve the above-mentioned purpose, the present application also proposes a one-to-many outdoor unit mute control device, the one-to-many outdoor unit mute control device comprising:

[0034] An acquisition module, configured to obtain the current outdoor ambient temperature and the startup demand load ratio in response to a mute signal of the outdoor unit;

[0035] a determination module, configured to determine a target operating frequency limit value and a target fan speed limit value according to the current outdoor ambient temperature and the startup demand load ratio;

[0036] The control module is used to control the operating frequency of the compressor and the fan speed of the outdoor unit according to the target operating frequency limit value and the target fan speed limit value, so as to achieve silent control of the outdoor unit.

[0037] In addition, to achieve the above-mentioned purpose, the present application also proposes a multi-split device, which includes: a memory, a processor, and a computer program stored on the memory and runnable on the processor, and the computer program is configured to implement the steps of the one-to-many outdoor unit silent control method as described above.

[0038] In addition, to achieve the above-mentioned purpose, the present application also proposes a storage medium, which is a computer-readable storage medium. A computer program is stored on the storage medium. When the computer program is executed by the processor, the steps of the one-to-multiple outdoor unit silent control method as described above are implemented.

[0039] In addition, to achieve the above-mentioned purpose, the present application also provides a computer program product, which includes a computer program. When the computer program is executed by a processor, it implements the steps of the one-to-multiple outdoor unit silent control method as described above.

[0040] One or more technical solutions proposed in this application obtain the current outdoor ambient temperature and the power-on demand load ratio in response to an outdoor unit mute signal; determine a target operating frequency limit value and a target fan speed limit value based on the current outdoor ambient temperature and the power-on demand load ratio; and control the operating frequency of the compressor and the fan speed of the outdoor unit based on the target operating frequency limit value and the target fan speed limit value, respectively, to achieve outdoor unit mute control. By determining corresponding frequency and speed limit values ​​based on different outdoor ambient temperatures and power-on demand load ratios, the outdoor unit noise is controlled, achieving a mute function for the outdoor unit, reducing overall noise during operation, and, under certain conditions, extending the range of use of the air conditioner. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0042] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0043] Figure 1 A flowchart illustrating a first embodiment of a method for controlling the mute function of one outdoor unit with multiple outdoor units;

[0044] Figure 2 A flowchart illustrating a second embodiment of a method for controlling the mute of one outdoor unit with multiple outdoor units;

[0045] Figure 3 A schematic diagram of obtaining multiple temperature intervals according to the outdoor ambient temperature, provided in an embodiment of the one-to-multiple outdoor unit mute control method of the present application;

[0046] Figure 4 This is a schematic diagram of the module structure of the one-to-multiple outdoor unit mute control device according to an embodiment of the present application;

[0047] Figure 5 This is a schematic diagram of the device structure of the hardware operating environment involved in the one-to-multiple outdoor unit silent control method in the embodiment of the present application.

[0048] The purpose, features and advantages of this application will be further explained with reference to the accompanying drawings in conjunction with the embodiments. DETAILED DESCRIPTION

[0049] It should be understood that the specific embodiments described herein are merely used to explain the technical solutions of the present application and are not intended to limit the present application.

[0050] In order to better understand the technical solution of the present application, a detailed description will be given below in conjunction with the accompanying drawings and specific implementation methods.

[0051] The main solution of the embodiment of the present application is: when receiving the outdoor unit mute signal of any indoor unit, the optimal operating frequency limit value and the fan speed limit value are determined according to the current outdoor ambient temperature and the startup demand load ratio, so that the maximum operating frequency of the compressor is operated below the optimal operating frequency limit value, and the maximum speed of the outdoor unit fan is operated below the optimal fan speed limit value.

[0052] Since the existing technology only focuses on the mute function of the indoor unit of the air conditioner, the noise caused by the outdoor unit is not controlled, which causes discomfort to oneself or neighbors. In order to avoid complaints, the air conditioner is not turned on, which reduces the scope of use of the air conditioner.

[0053] This application provides a solution that can realize the mute function of the outdoor unit, so that the whole machine makes less noise during operation. In very quiet scenes abroad at night, when the noise of the outdoor unit is annoying, this function can be turned on to reduce noise.

[0054] It should be noted that the execution subject of this embodiment can be a computing service device with data processing, network communication, and program execution functions, such as a tablet computer, personal computer, mobile phone, etc., or an electronic device or multi-connected device capable of performing the above functions. The following uses a multi-connected device as an example to illustrate this embodiment and the following embodiments.

[0055] Based on this, the embodiment of the present application provides a method for controlling the mute of one outdoor unit to multiple outdoor units. Figure 1 , Figure 1 This is a flow chart of the first embodiment of the one-to-multiple outdoor unit mute control method of this application.

[0056] In this embodiment, the one-to-many outdoor unit mute control method includes steps S10 to S30:

[0057] Step S10: In response to the outdoor unit mute signal, the current outdoor ambient temperature and the startup demand load ratio are obtained.

[0058] It should be noted that the main scenario of this embodiment is the silent control of the outdoor unit in the heating mode. The silent control method is a universal method. Specifically, a switch can be set in the outdoor unit parameters to determine whether the outdoor unit responds to the functional requirements of the indoor unit. Outdoor units without silent requirements can choose to turn off the silent control function.

[0059] It should be understood that the outdoor unit mute control signal is sent by any one of the multiple indoor units. The method of this embodiment is applicable to a multi-split device, which includes an outdoor unit and multiple indoor units. That is, one outdoor unit drives multiple indoor units, each of which operates independently. The number of operating indoor units can be flexibly adjusted in different modes and scenarios.

[0060] In a feasible implementation manner, the step S10 of "responding to the outdoor unit mute signal" may include steps A11 to A12:

[0061] Step A11: When the outdoor unit is in heating operation or the four-way valve is turned on, detecting whether an outdoor unit mute signal is received from any indoor unit;

[0062] It should be noted that when the outdoor unit starts heating operation or the four-way valve is opened, it can be detected in real time whether the outdoor unit mute signal sent by any indoor unit is received. If not, there is no need to execute the mute function control on the outdoor unit.

[0063] Step A12: When receiving the outdoor unit mute signal from any indoor unit, respond to the outdoor unit mute signal.

[0064] It should be noted that when an outdoor unit mute signal is received from any indoor unit, the outdoor unit mute signal can be responded to and the mute function control of the outdoor unit can be executed.

[0065] The startup demand load ratio is the ratio of the capacity of all indoor units with energy demand to the capacity of the outdoor units. When the startup demand load ratio is different, the heating effect may be different, and therefore the noise generated may also be different.

[0066] In a feasible implementation, the step of obtaining the power-on demand load ratio may include: obtaining the indoor unit with energy demand; calculating the capacity of the indoor unit with energy demand; calculating the capacity of the outdoor unit; and calculating the power-on demand load ratio based on the capacity of the indoor unit with energy demand and the capacity of the outdoor unit.

[0067] It should be noted that the indoor units with energy demand specifically refer to indoor units that are currently in heating operation and whose capacity demand coefficient exceeds a preset threshold. The operating status of each indoor unit can be monitored in real time to detect whether the indoor unit has energy demand and obtain the indoor units with energy demand.

[0068] In a specific implementation, the capacity of the indoor unit with energy demand can be calculated, the heat that the indoor unit needs to release during the heating process can be obtained to obtain the heat load, and the energy efficiency ratio (EER) of the indoor unit can be calculated. The input power of the indoor unit with energy demand is calculated through the heat load and the energy efficiency ratio to obtain the capacity of the indoor unit with energy demand.

[0069] It should be understood that the outdoor unit capacity can be calculated by the same process as the above-mentioned calculation of the capacity of the indoor unit with energy demand, and the outdoor unit capacity is the maximum amount of heat provided by the outdoor unit during heating.

[0070] In a specific implementation, the startup demand load ratio can be obtained by the ratio of the capacity of the indoor unit with energy demand to the capacity of the outdoor unit.

[0071] Step S20: determining a target operating frequency limit value and a target fan speed limit value according to the current outdoor ambient temperature and the startup demand load ratio.

[0072] It should be noted that when the current outdoor ambient temperature is different, the range it is in is different, and different startup demand load ratios have different control values ​​in different ranges. Therefore, the target operating frequency limit value and the target fan speed limit value can be determined according to the current outdoor ambient temperature and the startup demand load ratio.

[0073] The target operating frequency limit value is the optimal value for controlling the current operating frequency of the compressor, and the target fan speed limit value is the optimal value for controlling the current fan speed of the outdoor unit.

[0074] Step S30: controlling the operating frequency of the compressor and the fan speed of the outdoor unit according to the target operating frequency limit value and the target fan speed limit value, respectively, to achieve silent control of the outdoor unit.

[0075] In a specific implementation, the operating frequency of the compressor can be controlled and adjusted by the target operating frequency limit value, and the fan speed of the outdoor unit can be controlled and adjusted according to the target fan speed limit value. For example, the operating frequency of the compressor is limited to below the target operating frequency limit value, and the fan speed of the outdoor unit is limited to below the target fan speed limit value, thereby realizing the outdoor unit mute function.

[0076] It should be noted that when controlling the compressor and fan, the cold wind protection function of the indoor unit is still effective and will not be affected. During heating operation and silent control, if there are other protection / frequency limits, the protection / frequency limit control can be given priority, and the defrost and oil return frequency of the air conditioner are not subject to the above frequency limits. The defrost / oil return logic is normal to avoid unclean defrosting.

[0077] In a feasible implementation, step S30 may include: controlling the maximum operating frequency of the compressor to be less than or equal to the target operating frequency limit value, and controlling the maximum fan speed of the outdoor unit to be less than or equal to the target fan speed limit value.

[0078] It should be noted that the control of the compressor frequency is to control the maximum operating frequency of the compressor, and the control of the fan speed is to control the maximum speed of the fan, thereby ensuring that the control of the compressor and fan is not affected, and only the maximum value is limited. The embedded type is excellent and can be used for various outdoor unit controls.

[0079] In a specific implementation, for example, if the target operating frequency limit value is Fr1 and the target fan speed limit value is Pr1, the maximum operating frequency of the compressor is controlled not to exceed Fr1, and the maximum fan speed of the outdoor unit is controlled not to exceed Pr1. The actual operating frequency of the compressor and the actual fan speed can both be lower than this value.

[0080] In a specific implementation, when it is detected that all indoor units have exited the outdoor unit mute function or the outdoor unit is shut down or powered off, the outdoor unit mute control may be exited.

[0081] This embodiment provides a method for controlling the quietness of a single outdoor unit. The method comprises: obtaining the current outdoor ambient temperature and the startup load ratio in response to an outdoor unit quieting signal; determining a target operating frequency limit and a target fan speed limit based on the current outdoor ambient temperature and the startup load ratio; and controlling the compressor operating frequency and the outdoor unit fan speed, respectively, based on the target operating frequency limit and the target fan speed limit, to achieve quiet control of the outdoor units. By determining corresponding frequency and speed limits based on different outdoor ambient temperatures and startup load ratios, the outdoor unit noise is controlled, achieving a quiet function for the outdoor units, reducing overall noise during operation, and, under certain conditions, extending the range of use of the air conditioner.

[0082] Based on the first embodiment of the present application, in the second embodiment of the present application, the same or similar contents as those in the above embodiment 1 can be referred to the above introduction and will not be described in detail later. Figure 2 , step S20 includes steps S201 to S202:

[0083] Step S201: determining a target temperature range of the current outdoor ambient temperature according to the current outdoor ambient temperature.

[0084] It should be noted that the target temperature range is the temperature range of the current outdoor ambient temperature. It can be divided into multiple temperature ranges in advance, and the specific temperature range is selected based on the current outdoor ambient temperature. For example, multiple outdoor ambient temperature preset values ​​can be set in advance, and the temperature is divided into multiple temperature ranges based on the multiple outdoor ambient temperature preset values. Different control parameters are applied in different temperature ranges.

[0085] like Figure 3 As shown, Figure 3A schematic diagram of obtaining multiple temperature intervals according to the outdoor ambient temperature is provided. For example, the temperature intervals are divided into four temperature intervals. The number of temperature intervals can be adjusted according to the design requirements of the unit, including interval A, interval B, interval C, and interval D. According to the different changing trends of the outdoor ambient temperature, the temperature intervals are divided into an upward trend and a downward trend. The temperature interval corresponding to the outdoor ambient temperature with an upward trend is judged as being greater than or equal to, and the temperature interval corresponding to the outdoor ambient temperature with a downward trend is judged as being less than. If the changing trend of the outdoor ambient temperature is an upward trend, then when the current outdoor ambient temperature T4 is greater than or equal to T4_heat_1, it is in interval A. When the current outdoor ambient temperature is greater than or equal to T4_heat_2 and less than T4_heat_1, it is in interval B. When the current outdoor ambient temperature T 4 is greater than or equal to T4_heat_3 and less than T4_heat_2, the interval is interval C. When the current outdoor ambient temperature T4 is less than T4_heat_3, the interval is interval D. If the change trend of the outdoor ambient temperature is a downward trend, then when the current outdoor ambient temperature T4 is less than T4_heat_3-a, it is in interval D. When the current outdoor ambient temperature is greater than or equal to T4_heat_3-a and less than T4_heat_2-a, the interval is interval C. When the current outdoor ambient temperature T4 is greater than or equal to T4_heat_2-a and less than T4_heat_1-a, the interval is interval B. When the current outdoor ambient temperature T4 is greater than or equal to T4_heat_1-a, the interval is interval A. In the specific implementation, a is the hysteresis temperature, generally 0-10°C, and a is preferably 2°C. The hysteresis prevents fluctuations between the intervals. The first entry is controlled according to the rising curve. The range of T4_heat_1 is -15-20°C, preferably 12°C, the range of T4_heat_2 is -15-20°C, preferably 5°C, and the range of T4_heat_3 is -15-20°C, preferably -5°C.

[0086] In a feasible implementation, step S201 may include steps B11 to B12:

[0087] Step B11: obtaining historical outdoor ambient temperatures within a preset time period, and determining a current change trend of the outdoor ambient temperature based on the historical outdoor ambient temperatures;

[0088] Step B12: determining a target temperature range for the current outdoor ambient temperature based on the current change trend and the current outdoor ambient temperature.

[0089] It should be noted that the preset time can be set to 30 minutes, 60 minutes, etc. For example, by counting the historical outdoor ambient temperature within 30 minutes, the current change trend of the outdoor ambient temperature can be determined, and the target temperature range of the current outdoor ambient temperature can be determined based on the current change trend and the current outdoor ambient temperature.

[0090] For example, if the current change trend of T4 is an upward trend and T4 is greater than or equal to T4_heat_1, the target temperature range is range A.

[0091] Step S202: determining a target operating frequency limit value and a target fan speed limit value according to the target temperature range and the startup demand load ratio.

[0092] In a specific implementation, different operating frequency limit values ​​and fan speed limit values ​​are set for different temperature ranges, and the operating frequency limit value and fan speed limit value are also different at different startup demand load ratios. Therefore, the optimal operating frequency limit value and fan speed limit value can be determined jointly based on the target temperature range and the startup demand load ratio.

[0093] In a feasible implementation, step S202 may include steps C11 to C13:

[0094] Step C11: obtaining a preset startup demand load ratio threshold;

[0095] It should be understood that the preset startup demand load ratio threshold R can be set according to demand, ranging from 20% to 100%. This embodiment takes 50% as an example for illustration, and other values ​​can also be selected, such as 60%, 70%, etc. This embodiment does not limit this.

[0096] Step C12: when the startup demand load ratio is greater than the preset startup demand load ratio threshold, obtaining a plurality of first operating frequency limit values ​​and a plurality of first fan speed limit values;

[0097] In a specific implementation, when the startup demand load ratio is greater than the preset startup demand load ratio threshold R, the operating frequency limit values ​​and fan speed limit values ​​corresponding to different temperature ranges are set as follows:

[0098] ① Outdoor unit compressor control - only limits the maximum frequency, the actual operating frequency can be lower than this value;

[0099] When the outdoor ambient temperature is in range A, the maximum frequency does not exceed Fr5. The Fr5 protection range is 16-40Hz, with the preferred value being 35Hz.

[0100] When the outdoor ambient temperature is in range B, the maximum frequency does not exceed Fr6. The Fr6 protection range is 16-40Hz, with 40Hz being the preferred value.

[0101] When the outdoor ambient temperature is in range C, the maximum frequency does not exceed Fr7. The Fr7 protection range is 20-70Hz, with the preferred value being 45Hz.

[0102] When the outdoor ambient temperature is in the D range, the maximum frequency does not exceed Fr8. The Fr8 protection range is 20-70Hz, with the preferred value being 50Hz.

[0103] ② Outdoor unit fan control - only limits the maximum speed, the actual operating speed can be lower than this value;

[0104] When the outdoor ambient temperature is in range A, the maximum frequency does not exceed Pr5. The Pr5 protection range is 150-500Rpm, with the preferred value being 400Rpm.

[0105] When the outdoor ambient temperature is in range B, the maximum frequency does not exceed Pr6. The Pr6 protection range is 150-500Rpm, with the preferred value being 500Rpm.

[0106] When the outdoor ambient temperature is in range C, the maximum frequency does not exceed Pr7. The Pr7 protection range is 300-800Rpm, with the preferred value being 600Rpm.

[0107] When the outdoor ambient temperature is in the D range, the maximum frequency does not exceed Pr8. The Pr8 protection range is 300-800Rpm, and the preferred value is 7000Rpm.

[0108] Therefore, when the startup demand load ratio is greater than the preset startup demand load ratio threshold, the multiple first operating frequency limit values ​​obtained are Fr5, Fr6, Fr7 and Fr8, and the multiple first fan speed limit values ​​are Pr5, Pr6, Pr7 and Pr8.

[0109] Step C13: determining a target operating frequency limit value from the plurality of first operating frequency limit values ​​according to the target temperature range, and determining a target fan speed limit value from the plurality of first fan speed limit values ​​according to the target temperature range.

[0110] In a specific implementation, the target operating frequency limit value can be selected from Fr5, Fr6, Fr7, and Fr8 according to the target temperature range, and the target fan speed limit value can be selected from Pr5, Pr6, Pr7, and Pr8 according to the target temperature range. For example, if the target temperature range is range C, the target operating frequency limit value is Fr7, and the target fan speed limit value is Pr7.

[0111] In a specific implementation, if the startup demand load ratio is less than or equal to the preset startup demand load ratio threshold, the corresponding operating frequency limit value and fan speed limit value are also different. Therefore, step S202 may further include steps D11 to D12:

[0112] Step D11: when the startup demand load ratio is less than or equal to the preset startup demand load ratio threshold, obtaining a plurality of second operating frequency limit values ​​and a plurality of second fan speed limit values;

[0113] In a specific implementation, when the startup demand load ratio is less than or equal to the preset startup demand load ratio threshold R, the operating frequency limit values ​​and fan speed limit values ​​corresponding to different temperature ranges are set as follows:

[0114] ① Outdoor unit compressor control - only limits the maximum frequency, the actual operating frequency can be lower than this value;

[0115] When the outdoor ambient temperature is in range A, the maximum frequency does not exceed Fr1. The Fr1 protection range is 16-40Hz, with a preferred value of 25Hz.

[0116] When the outdoor ambient temperature is in interval B, the maximum frequency does not exceed Fr2. The Fr2 protection range is 16-40Hz, with a preferred value of 30Hz.

[0117] When the outdoor ambient temperature is in range C, the maximum frequency does not exceed Fr3. The Fr3 protection range is 20-60Hz, with a preferred value of 35Hz.

[0118] When the outdoor ambient temperature is in the D range, the maximum frequency does not exceed Fr4. The Fr4 protection range is 20-60Hz, with the preferred value being 40Hz.

[0119] ② Outdoor unit fan control - only limits the maximum speed, the actual operating speed can be lower than this value;

[0120] When the outdoor ambient temperature is in range A, the maximum frequency does not exceed Pr1. The Pr1 protection range is 150-500Rpm, with the preferred value being 350Rpm.

[0121] When the outdoor ambient temperature is in range B, the maximum frequency does not exceed Pr2. The Pr2 protection range is 150-500Rpm, with a preferred value of 400Rpm.

[0122] When the outdoor ambient temperature is in the C range, the maximum frequency does not exceed Pr3. The Pr3 protection range is 300-800Rpm, with the preferred value being 450Rpm.

[0123] When the outdoor ambient temperature is in the D range, the maximum frequency does not exceed Pr4. The Pr4 protection range is 300-800Rpm, with the preferred value being 500Rpm.

[0124] Therefore, when the startup demand load ratio is less than or equal to the preset startup demand load ratio threshold, the multiple second operating frequency limit values ​​obtained are Fr1, Fr2, Fr3 and Fr4, and the multiple first fan speed limit values ​​are Pr1, Pr2, Pr3 and Pr4.

[0125] Step D12: determining a target operating frequency limit value from a plurality of second operating frequency limit values ​​according to the target temperature range, and determining a target fan speed limit value from a plurality of second fan speed limit values ​​according to the target temperature range.

[0126] In a specific implementation, the target operating frequency limit value can be selected from Fr1, Fr2, Fr3, and Fr4 according to the target temperature range, and the target fan speed limit value can be selected from Pr1, Pr2, Pr3, and Pr4 according to the target temperature range. For example, if the target temperature range is range C, the target operating frequency limit value is Fr3, and the target fan speed limit value is Pr3.

[0127] By switching zones according to the T4 interval, the noise reduction amount is reduced in scenarios with poor reliability, giving priority to reliability. When T4 is low, the frequency and wind speed are too low, which may cause reliability risks, such as low low pressure, etc. Therefore, the control of frequency and fan speed is reduced.

[0128] This embodiment determines a target temperature range for the current outdoor ambient temperature based on the current outdoor ambient temperature; and determines a target operating frequency limit and a target fan speed limit based on the target temperature range and the startup demand load ratio. Setting the startup demand load ratio prevents the system from overworking unnecessarily. For example, when the ambient temperature is low, the system can appropriately reduce the operating frequency and fan speed to avoid excessive load, thereby improving system operating efficiency and reducing maintenance costs.

[0129] It should be noted that the above examples are only used to understand the present application and do not constitute a limitation on the one-to-multiple outdoor unit silent control method of the present application. More simple transformations based on this technical concept are all within the scope of protection of the present application.

[0130] This application also provides a one-to-many outdoor unit mute control device, please refer to Figure 4 The one-to-many outdoor unit mute control device includes:

[0131] An acquisition module 10 is configured to obtain the current outdoor ambient temperature and the startup demand load ratio in response to the outdoor unit mute signal;

[0132] a determination module 20 for determining a target operating frequency limit value and a target fan speed limit value according to the current outdoor ambient temperature and the startup demand load ratio;

[0133] The control module 30 is configured to control the operating frequency of the compressor and the fan speed of the outdoor unit according to the target operating frequency limit value and the target fan speed limit value, respectively, so as to achieve silent control of the outdoor unit.

[0134] The one-to-many outdoor unit mute control device provided in this application utilizes the one-to-many outdoor unit mute control method described in the aforementioned embodiment to address the technical problem of controlling noise from outdoor units. Compared to the prior art, the one-to-many outdoor unit mute control device provided in this application achieves the same beneficial effects as the one-to-many outdoor unit mute control method described in the aforementioned embodiment. Other technical features of the one-to-many outdoor unit mute control device are the same as those disclosed in the aforementioned embodiment and are not further detailed here.

[0135] The present application provides a multi-split device, which includes: at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores instructions that can be executed by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to execute the one-to-multiple outdoor unit mute control method in the above-mentioned embodiment one.

[0136] Reference below Figure 5 , which shows a structural schematic diagram of a multi-connected device suitable for implementing an embodiment of the present application. Figure 5 The multi-connected device shown is only an example and should not limit the functions and scope of use of the embodiments of the present application.

[0137] like Figure 5 As shown, the multi-connected device may include a processing device 1001 (e.g., a central processing unit, a graphics processing unit, etc.), which can perform various appropriate actions and processes based on programs stored in ROM (Read Only Memory) 1002 or programs loaded from storage device 1003 into RAM (Random Access Memory) 1004. RAM 1004 also stores various programs and data required for the operation of the multi-connected device. Processing device 1001, ROM 1002, and RAM 1004 are interconnected via bus 1005. An input / output (I / O) interface 1006 is also connected to the bus. Typically, the following systems may be connected to I / O interface 1006: input device 1007 including, for example, a touch screen, touchpad, keyboard, mouse, image sensor, microphone, accelerometer, gyroscope, etc.; output device 1008 including, for example, LCD (Liquid Crystal Display), speaker, vibrator, etc.; storage device 1003 including, for example, a magnetic tape, hard disk, etc.; and communication device 1009. The communication device 1009 can allow the multi-connection device to communicate with other devices wirelessly or wired to exchange data. Although the figure shows a multi-connection device with various systems, it should be understood that it is not required to implement or have all of the systems shown. More or fewer systems can be implemented or have alternatively.

[0138] In particular, according to the embodiments disclosed in the present application, the processes described above with reference to the flowcharts can be implemented as computer software programs. For example, the embodiments disclosed in the present application include a computer program product comprising a computer program carried on a computer-readable medium, the computer program comprising program code for executing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from a network via a communication device, or installed from a storage device 1003, or installed from a ROM 1002. When the computer program is executed by the processing device 1001, the above-mentioned functions defined in the method of the embodiment disclosed in the present application are executed.

[0139] The multi-split device provided in this application employs the one-to-multiple outdoor unit mute control method described in the above-mentioned embodiment, solving the technical problem of controlling outdoor unit noise. Compared to the prior art, the multi-split device provided in this application achieves the same beneficial effects as the one-to-multiple outdoor unit mute control method described in the above-mentioned embodiment. Other technical features of the multi-split device are the same as those disclosed in the above-mentioned embodiment and are not further elaborated here.

[0140] It should be understood that the various parts disclosed in this application can be implemented using hardware, software, firmware, or a combination thereof. In the description of the above embodiments, specific features, structures, materials, or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0141] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

[0142] The present application provides a computer-readable storage medium having computer-readable program instructions (ie, computer program) stored thereon, and the computer-readable program instructions are used to execute the one-to-many outdoor unit mute control method in the above-mentioned embodiment.

[0143] The computer-readable storage medium provided in this application may be, for example, a USB flash drive, but is not limited to electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems, systems or devices, or any combination thereof. More specific examples of computer-readable storage media may include, but are not limited to: an electrical connection with one or more wires, a portable computer disk, a hard disk, RAM (Random Access Memory), ROM (Read Only Memory), EPROM (Erasable Programmable Read Only Memory or Flash memory), optical fiber, CD-ROM (CD-Read Only Memory, portable compact disk read-only memory), optical storage device, magnetic storage device, or any suitable combination thereof. In this embodiment, the computer-readable storage medium may be any tangible medium that contains or stores a program that can be used by or in conjunction with an instruction execution system, system or device. The program code contained on the computer-readable storage medium may be transmitted using any appropriate medium, including but not limited to: wires, optical cables, RF (Radio Frequency), etc., or any suitable combination thereof.

[0144] The computer-readable storage medium may be included in the multi-connection device, or may exist independently without being assembled into the multi-connection device.

[0145] The above-mentioned computer-readable storage medium carries one or more programs. When the above-mentioned one or more programs are executed by a multi-split device, the multi-split device: obtains the current outdoor ambient temperature and the startup demand load ratio in response to the outdoor unit mute signal; determines the target operating frequency limit value and the target fan speed limit value according to the current outdoor ambient temperature and the startup demand load ratio; controls the operating frequency of the compressor and the fan speed of the outdoor unit according to the target operating frequency limit value and the target fan speed limit value, so as to achieve outdoor unit mute control.

[0146] The computer program code for performing the operations of the present application can be written in one or more programming languages ​​or a combination thereof, including object-oriented programming languages ​​such as Java, Smalltalk, C++, and conventional procedural programming languages ​​such as "C" or similar programming languages. The program code can be executed entirely on the user's computer, partially on the user's computer, as a separate software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving a remote computer, the remote computer can be connected to the user's computer through any type of network, including a LAN (Local Area Network) or a WAN (Wide Area Network), or can be connected to an external computer (e.g., using an Internet service provider to connect via the Internet).

[0147] The flow charts and block diagrams in the accompanying drawings illustrate the possible architecture, functions and operations of the systems, methods and computer program products according to various embodiments of the present application. In this regard, each box in the flow chart or block diagram can represent a module, program segment or a part of code, and the module, program segment or a part of code contains one or more executable instructions for realizing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in a different order than that marked in the accompanying drawings. For example, two boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram and / or flow chart, and the combination of the boxes in the block diagram and / or flow chart can be implemented by a dedicated hardware-based system that performs the specified function or operation, or can be implemented by a combination of dedicated hardware and computer instructions.

[0148] The modules described in the embodiments of the present application may be implemented in software or hardware, wherein the name of a module does not necessarily limit the unit itself.

[0149] The computer-readable storage medium provided in this application stores computer-readable program instructions (i.e., a computer program) for executing the aforementioned method for controlling the noise level of a single outdoor unit. This method solves the technical problem of controlling noise from the outdoor units. Compared to the prior art, the computer-readable storage medium provided in this application has the same beneficial effects as the method for controlling the noise level of a single outdoor unit provided in the aforementioned embodiment, and therefore is not further elaborated here.

[0150] The present application also provides a computer program product, including a computer program, which, when executed by a processor, implements the steps of the above-mentioned one-to-multiple outdoor unit mute control method.

[0151] The computer program product provided in this application can solve the technical problem of how to control the noise of an outdoor unit. Compared with the prior art, the beneficial effects of the computer program product provided in this application are the same as those of the one-to-multiple outdoor unit silent control method provided in the above embodiment, and will not be repeated here.

[0152] The above description is only part of the embodiments of the present application and does not limit the patent scope of the present application. All equivalent structural transformations made by using the contents of the present application specification and drawings under the technical concept of the present application, or direct / indirect application in other related technical fields are included in the patent protection scope of the present application.

Claims

1. A method for controlling the mute of one outdoor unit with multiple outdoor units, characterized in that: The one-to-many outdoor unit mute control method is applied to a multi-split device, which includes an outdoor unit and multiple indoor units. The one-to-many outdoor unit mute control method includes: In response to the outdoor unit mute signal, obtaining the current outdoor ambient temperature and the startup demand load ratio; Determining a target operating frequency limit value and a target fan speed limit value according to the current outdoor ambient temperature and the startup demand load ratio; The operating frequency of the compressor and the fan speed of the outdoor unit are controlled according to the target operating frequency limit value and the target fan speed limit value, respectively, to achieve silent control of the outdoor unit.

2. The method according to claim 1, wherein The step of determining the target operating frequency limit value and the target fan speed limit value according to the current outdoor ambient temperature and the startup demand load ratio includes: Determining a target temperature range for the current outdoor ambient temperature according to the current outdoor ambient temperature; A target operating frequency limit value and a target fan speed limit value are determined according to the target temperature range and the startup demand load ratio.

3. The method according to claim 2, wherein The step of determining the target operating frequency limit value and the target fan speed limit value according to the target temperature range and the startup demand load ratio includes: Get the preset startup demand load ratio threshold; When the startup demand load ratio is greater than the preset startup demand load ratio threshold, obtaining a plurality of first operating frequency limit values ​​and a plurality of first fan speed limit values; A target operating frequency limit value is determined from a plurality of first operating frequency limit values ​​according to the target temperature range, and a target fan speed limit value is determined from a plurality of first fan speed limit values ​​according to the target temperature range.

4. The method according to claim 3, wherein After the step of obtaining the preset startup demand load ratio threshold, the method further includes: When the startup demand load ratio is less than or equal to the preset startup demand load ratio threshold, obtaining a plurality of second operating frequency limit values ​​and a plurality of second fan speed limit values; A target operating frequency limit value is determined from a plurality of second operating frequency limit values ​​according to the target temperature range, and a target fan speed limit value is determined from a plurality of second fan speed limit values ​​according to the target temperature range.

5. The method according to claim 2, wherein The step of determining the target temperature range of the current outdoor ambient temperature according to the current outdoor ambient temperature includes: Obtaining historical outdoor ambient temperatures within a preset time period, and determining a current change trend of the outdoor ambient temperature based on the historical outdoor ambient temperatures; A target temperature range in which the current outdoor ambient temperature falls is determined according to the current change trend and the current outdoor ambient temperature.

6. The method according to any one of claims 1 to 5, characterized in that The steps for obtaining the startup demand load ratio include: Obtain indoor units with energy demand; Calculate the capacity of indoor units where energy demand exists; Calculate the outdoor unit capacity; The startup demand load ratio is calculated based on the capacity of the indoor unit with energy demand and the capacity of the outdoor unit.

7. The method according to any one of claims 1 to 5, characterized in that The steps of responding to the outdoor unit mute signal include: When the outdoor unit is heating or the four-way valve is turned on, detect whether the outdoor unit mute signal of any indoor unit is received; When receiving the outdoor unit mute signal from any indoor unit, respond to the outdoor unit mute signal.

8. The method according to any one of claims 1 to 5, characterized in that The step of controlling the operating frequency of the compressor and the fan speed of the outdoor unit according to the target operating frequency limit value and the target fan speed limit value respectively includes: The maximum operating frequency of the compressor is controlled to be less than or equal to the target operating frequency limit value, and the maximum speed of the fan of the outdoor unit is controlled to be less than or equal to the target fan speed limit value.

9. A mute control device for one-to-many outdoor units, characterized in that: The device comprises: An acquisition module, configured to obtain the current outdoor ambient temperature and the startup demand load ratio in response to a mute signal of the outdoor unit; a determination module, configured to determine a target operating frequency limit value and a target fan speed limit value according to the current outdoor ambient temperature and the startup demand load ratio; The control module is used to control the operating frequency of the compressor and the fan speed of the outdoor unit according to the target operating frequency limit value and the target fan speed limit value, so as to achieve silent control of the outdoor unit.

10. A multi-connection device, characterized in that: The multi-connected device includes: an outdoor unit and multiple indoor units; The multi-split device further includes: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the computer program is configured to implement the steps of the one-to-many outdoor unit mute control method according to any one of claims 1 to 8.

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