Air conditioner fan control method and system and air conditioner

Abstract

The invention relates to an air conditioner fan control method and system and an air conditioner. The control method of the air conditioner fan comprises the steps that a comprehensive efficiency index is determined through indoor environment temperature data, outdoor environment data and room feature data on the basis of the current temperature change rate, the expected temperature change rate, the current room heat transfer coefficient and the reference heat transfer coefficient; the adjusting rotating speed of the draught fan is judged through the comprehensive efficiency index, the phenomenon of insufficient refrigeration or excessive refrigeration caused by the fixed wind speed in a traditional rapid refrigeration mode can be adapted, energy waste caused by the fixed rotating speed is effectively avoided, the operation cost is reduced, and the comfort level of a user is improved.

Description

Technical Field

[0001] The present invention relates to the field of air conditioners, and more particularly, to a control method, a system and an air conditioner for an air conditioner fan. Background Art

[0002] With the increasing improvement of living standards, people's requirements for the quality of life are also getting higher and higher, which is particularly evident in household appliances. Taking air conditioners as an example, in order to meet the user's demand for rapid cooling and thus bring a more comfortable usage experience, the air conditioner fan is often controlled to operate at a high speed, so that the amount of air passing through the evaporator (condenser) per unit time is more, and the indoor heat can be taken away faster to achieve rapid cooling.

[0003] However, the inventor found that the traditional rapid cooling mode cannot adapt to various complex and changeable usage scenarios, resulting in poor cooling effect in some cases and poor user comfort in other cases. Summary of the Invention

[0004] Based on this, it is necessary to provide a control method, a system and an air conditioner for an air conditioner fan that can improve applicability.

[0005] To achieve the above object, on the one hand, an embodiment of the present application provides a control method for an air conditioner fan, including:

[0006] When it is detected that the current is in the rapid cooling mode, control the fan to operate at a preset initial speed;

[0007] Obtain indoor environmental temperature data, outdoor environmental data, and room characteristic data; wherein, the room characteristic data includes room area, room orientation, and window area;

[0008] Calculate the current temperature change rate according to the indoor environmental temperature data;

[0009] Based on the outdoor environmental data, room area, room orientation, and window area, determine the current room heat transfer coefficient;

[0010] Determine a comprehensive efficiency index according to the current temperature change rate, the desired temperature change rate, the current room heat transfer coefficient, and the reference heat transfer coefficient;

[0011] Based on the initial speed, the comprehensive efficiency index, and a preset adjustment amplitude, determine the adjusted speed of the fan, and control the fan to operate at the adjusted speed.

[0012] In one of the embodiments, the step of determining the comprehensive efficiency index according to the current temperature change rate, the desired temperature change rate, the current room heat transfer coefficient, and the reference heat transfer coefficient includes:

[0013] Obtain a heat transfer weighting factor;

[0014] Determine a first dimensionless value based on the current temperature change rate and the desired temperature change rate;

[0015] Determine a second dimensionless value based on the heat transfer weighting factor, the current room heat transfer coefficient, and the reference heat transfer coefficient;

[0016] Confirm the sum of the first dimensionless value and the second dimensionless value as the comprehensive efficiency index.

[0017] In one embodiment, in the step of determining the first dimensionless value based on the current temperature change rate and the desired temperature change rate, the first dimensionless value is obtained based on the following formula:

[0018] ;

[0019] Wherein, is the first dimensionless value; is the current temperature change rate; is the desired temperature change rate.

[0020] In one embodiment, in the step of determining the second dimensionless value based on the heat transfer weighting factor, the current room heat transfer coefficient, and the reference heat transfer coefficient, the second dimensionless value is obtained based on the following formula:

[0021] ;

[0022] Wherein, is the second dimensionless value; is the heat transfer weighting factor; is the current room heat transfer coefficient; is the reference heat transfer coefficient; is the dynamic threshold.

[0023] In one embodiment, the dynamic threshold is obtained according to the outdoor temperature.

[0024] In one embodiment, the preset adjustment amplitude includes a positive adjustment amplitude and a negative adjustment amplitude; the step of determining the adjusted speed of the fan based on the initial speed, the comprehensive efficiency index, and the preset adjustment amplitude includes:

[0025] Use the comprehensive efficiency index to select the positive adjustment amplitude or the negative adjustment amplitude;

[0026] Determine the adjusted speed of the fan based on the product of the positive adjustment amplitude and the comprehensive efficiency index, or determine the adjusted speed of the fan based on the product of the negative adjustment amplitude and the comprehensive efficiency index.

[0027] In one embodiment, it further includes the step:

[0028] When the indoor environmental temperature is lower than the preset value compared with the target temperature, control the fan to reduce its rotational speed until the rotational speed reaches the value corresponding to the normal operation mode.

[0029] On the one hand, an embodiment of the present invention provides a control system for an air-conditioning fan, including multiple air conditioners installed in different rooms, a memory, and a processor. The memory stores a computer program, and the processor executes the steps of the above method.

[0030] On the one hand, an embodiment of the present invention provides an air conditioner, including an air-conditioning body, a memory, and a processor; the memory stores a computer program, and the processor executes the steps of the above method.

[0031] On the other hand, an embodiment of the present invention provides a control device for an air-conditioning fan, including:

[0032] A detection module, configured to detect that the current is in the rapid cooling mode and control the fan to operate at a preset initial rotational speed;

[0033] An acquisition module, configured to acquire indoor environmental temperature data, outdoor environmental data, and room feature data; wherein, the room feature data includes room area, room orientation, and window area;

[0034] A first calculation module, configured to calculate the current temperature change rate according to the indoor environmental temperature data;

[0035] A second calculation module, configured to determine the current room heat transfer coefficient based on the outdoor environmental data, room area, room orientation, and window area;

[0036] A comprehensive efficiency index confirmation module, configured to determine a comprehensive efficiency index according to the current temperature change rate, desired temperature change rate, current room heat transfer coefficient, and reference heat transfer coefficient;

[0037] A speed regulation module, configured to determine the adjusted rotational speed of the fan based on the initial rotational speed, comprehensive efficiency index, and preset adjustment amplitude, and control the fan to operate at the adjusted rotational speed.

[0038] One of the above technical solutions has the following advantages and beneficial effects:

[0039] The above control method for an air-conditioning fan determines a comprehensive efficiency index through indoor environmental temperature data, outdoor environmental data, and room feature data, and based on the current temperature change rate, desired temperature change rate, current room heat transfer coefficient, and reference heat transfer coefficient; by judging the adjusted rotational speed of the fan through the comprehensive efficiency index, it can adapt to the insufficient cooling or excessive cooling phenomena caused by the fixed wind speed in the traditional rapid cooling mode, effectively avoid energy waste caused by the fixed rotational speed in specific scenarios, reduce the operating cost, and improve the user comfort. Description of the Drawings

[0040] The accompanying drawings here are incorporated into the specification and form a part of this specification, showing embodiments consistent with this application, and are used together with the specification to explain the principles of this application.

[0041] To more clearly illustrate the technical solutions in the embodiments of this application or in the related art, the following will briefly introduce the accompanying drawings required for use in the description of the embodiments or the related art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0042] Figure 1 It is a schematic flowchart of a control method for an air conditioner fan in an embodiment;

[0043] Figure 2 It is a schematic flowchart of the steps for determining a comprehensive efficiency index according to the current temperature change rate, the desired temperature change rate, the current room heat transfer coefficient, and the reference heat transfer coefficient in an embodiment;

[0044] Figure 3 It is a schematic block diagram of a control device for an air conditioner fan in an embodiment. Detailed implementation manners

[0045] To facilitate the understanding of this application, the following will describe this application more comprehensively with reference to the relevant accompanying drawings. Embodiments of this application are given in the drawings. However, this application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of this application more thorough and comprehensive.

[0046] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs. The terms used in the specification of this application herein are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0047] In subsequent descriptions, the use of suffixes such as "module", "component", or "unit" to represent elements is only for the convenience of the description of this application, and it has no specific meaning itself. Therefore, "module" and "component" can be used interchangeably.

[0048] It can be understood that in the following embodiments, "connection", if there is an electrical signal or data transfer between the connected circuits, modules, units, etc., should be understood as "electrical connection", "communication connection", etc.

[0049] As used herein, the singular forms "a", "an" and "the" may also include the plural forms unless the context clearly dictates otherwise. It should also be understood that the terms "comprises / comprising" or "has / including" etc. specify the presence of the stated features, integers, steps, operations, components, parts, or combinations thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof.

[0050] In one embodiment, as Figure 1 shown, a control method for an air-conditioning fan is provided, including:

[0051] S110, when it is detected that the current is in the rapid cooling mode, control the fan to operate at a preset initial speed;

[0052] Among them, the rapid cooling mode is a mode in which the air conditioner enters strong cooling at the initial stage of starting or when the temperature deviates greatly from the target value. This mode can enter automatically or can be entered through manual control, specifically according to actual needs. In a specific example, the preset initial speed can be the rated speed, or it can be 90%, 80% or the like of the rated speed. In fact, the rated speed of the fan is far from its maximum speed.

[0053] S120, obtain indoor environmental temperature data, outdoor environmental data and room characteristic data; among them, the room characteristic data includes room area, room orientation and window area;

[0054] Among them, the indoor environmental temperature data refers to the temperature data of the room where the air conditioner is located, which can be obtained through the temperature sensor provided at the air outlet. The outdoor environmental data can be obtained through the sensor provided on the outdoor unit, and specifically can include temperature data, or can also include parameters such as humidity. The room orientation can be south-facing, north-facing, southwest-facing, etc. The parameter values of the room area, room orientation and window area can be obtained by user upload, or can be obtained by an active method, such as being collected by a laser scanner.

[0055] S130, calculate the current temperature change rate according to the indoor environmental temperature data;

[0056] Specifically, the current temperature change rate can be calculated with a time window of 20s, 30s, or 1min, without specific limitation. Taking 1min as an example, first obtain the difference between the current temperature and the temperature one minute ago, and then divide it by the time length of 1min to get the current temperature change rate. The current temperature change rate is jointly affected by the air conditioner performance and heat transfer. It should be noted that the current temperature change rate is calculated based on the already occurred temperature data, which reflects the past cooling effect. For example, after the air conditioner starts cooling for a period of time, the temperature drop rate is calculated to determine whether the rotation speed needs to be adjusted. However, during this period, the room may have absorbed a large amount of heat due to poor heat dissipation conditions, resulting in a slow decrease in the indoor temperature. Adjusting only according to the temperature change trend may not be able to timely respond to the influence brought by the heat dissipation conditions, causing the indoor temperature to be higher than the target value for a long time. For rooms with different heat dissipation conditions, even if the initial temperature and temperature change trend are the same, their subsequent temperature change situations may be completely different.

[0057] S140. Determine the current room heat transfer coefficient based on the outdoor environmental data, room area, room orientation, and window area.

[0058] Among them, the current room heat transfer coefficient refers to the heat transfer coefficient for the cold quantity to be transferred outside the room. It should be noted that the current room heat transfer coefficient is the heat insulation performance of the room and is the heat dissipation ability of the room itself. For example, a west-facing room will be directly irradiated by sunlight from afternoon to evening, and a large amount of heat will be introduced into the room through the windows and walls. Taking summer as an example, in the same building, the indoor temperature of a west-facing room may be 3 - 5°C higher than that of a non-west-facing room. This means that a west-facing room requires stronger cooling capacity to maintain a comfortable temperature. The room area refers to the area of the six surfaces inside the room.

[0059] Specifically, the current room heat transfer coefficient can be estimated using empirical methods. For example, different heat transfer coefficients can be assigned based on factors such as the room orientation (in the south, south-facing rooms receive sunlight for a longer time and the heat transfer of cold is faster; north-facing rooms are slower) and the window area (the larger the window area, the faster the heat transfer of cold). For example, a preset value is assigned to each orientation according to the current time point, and then the preset value is increased or decreased according to the ratio of the window area (the ratio of the window area to the room area). For example, the heat transfer coefficient of a south-facing room at 8 am is 1.2, and that of a north-facing room is 0.8. The basic ratio of the window area is 15%, and for every 2% increase, the heat transfer coefficient increases by 0.5. By integrating these factors, a room heat transfer coefficient is obtained to quantify the room's heat dissipation conditions. Finally, the heat transfer coefficient is further dynamically corrected based on outdoor environmental data. The correction value can be obtained through experimental measurement. A temperature correction coefficient is assigned for different temperatures, and the product of the room heat transfer coefficient and the temperature correction coefficient is used as the current room heat transfer coefficient. In another example, in the presence of an accurate room model, the heat transfer coefficients of the wall and the window at the current time point can be calculated separately (specifically, it can be calculated according to empirical formulas or numerical simulations), and then weights are assigned according to the area ratio to obtain the current room heat transfer coefficient. For example, the heat transfer coefficient of the wall is A1; the heat transfer coefficient of the window is B1, and the area ratio is 20%, then the current room heat transfer coefficient = 0.8A1 + 0.2B1. Specifically, the current room heat transfer coefficient can also be obtained by other means, such as through simulation. Incorporating the room heat transfer coefficient into the comprehensive efficiency index can enable the air conditioner to more accurately understand the actual cooling demand of the room. Reducing the cooling power in rooms with good heat dissipation conditions and increasing the cooling capacity in rooms with poor heat dissipation conditions can avoid unnecessary energy waste. Reasonably considering the heat dissipation conditions for air conditioner control can reduce the energy consumption of the air conditioner by 10% - 20% while ensuring the comfort of the indoor temperature. Considering the heat dissipation conditions can enable the air conditioning system to better adapt to different usage environments. Whether it is a newly built house with good insulation performance or an old house with poor insulation, the air conditioner can automatically adjust its operating parameters according to the heat dissipation conditions to ensure stable and efficient operation in various environments.

[0060] S150. Determine a comprehensive efficiency index according to the current temperature change rate, the desired temperature change rate, the current room heat transfer coefficient, and the reference heat transfer coefficient.

[0061] Among them, the comprehensive efficiency index is a dimensionless index that reflects the matching degree between the current cooling efficiency and the target efficiency. The desired temperature change rate is the target temperature adjustment rate preset by the user or the system. The reference heat transfer coefficient is the designed heat transfer parameter of the room under standard working conditions and serves as a reference for performance comparison.

[0062] Specifically, such as Figure 2As shown, the steps for determining the comprehensive efficiency index according to the current temperature change rate, the desired temperature change rate, the current room heat transfer coefficient, and the reference heat transfer coefficient include:

[0063] S210, obtain the heat transfer weighting factor;

[0064] Among them, the heat transfer weighting factor is a weight coefficient reflecting the influence of heat transfer efficiency on the system efficiency, and is used to balance the contributions of the temperature adjustment rate and the heat transfer performance. Its value range is between 0 and 1.

[0065] Specifically, the heat transfer weighting factor is obtained by processing according to the expert rule base. By inputting the outdoor wind speed and the solar radiation value into the rule base, the corresponding weight can be obtained, and this weight is the heat transfer weighting factor.

[0066] S220, based on the current temperature change rate and the desired temperature change rate, determine the first dimensionless value;

[0067] Specifically, the first dimensionless value is obtained based on the following formula:

[0068] ;

[0069] Among them, is the first dimensionless value; is the current temperature change rate; is the desired temperature change rate.

[0070] S230, based on the heat transfer weighting factor, the current room heat transfer coefficient, and the reference heat transfer coefficient, determine the second dimensionless value;

[0071] Specifically, the second dimensionless value is obtained based on the following formula:

[0072] ;

[0073] Among them, is the second dimensionless value; is the heat transfer weighting factor; is the current room heat transfer coefficient; is the reference heat transfer coefficient; is the dynamic threshold. In a specific example, the dynamic threshold is obtained according to the outdoor temperature. .

[0074] S240, confirm the sum of the first dimensionless value and the second dimensionless value as the comprehensive efficiency index.

[0075] Specifically, when the comprehensive efficiency index is equal to 0, it means that the refrigeration efficiency exactly matches the expectation; when the comprehensive efficiency index is less than 0, the rotation speed needs to be reduced; when the comprehensive efficiency index is greater than 0, the rotation speed needs to be increased.

[0076] S160. Determine the adjusted speed of the fan based on the initial speed, the comprehensive efficiency index, and the preset adjustment amplitude, and control the fan to operate at the adjusted speed.

[0077] Specifically, the preset adjustment amplitude includes a positive adjustment amplitude and a negative adjustment amplitude. When the comprehensive efficiency index is greater than 0, the negative adjustment amplitude is selected; when the comprehensive efficiency index is less than 0, the positive adjustment amplitude is selected. ) where is the value of the comprehensive efficiency index, and β is the preset adjustment amplitude.

[0078] The above control method for the air-conditioning fan determines the comprehensive efficiency index through the indoor environmental temperature data, the outdoor environmental data, and the room characteristic data, and based on the current temperature change rate, the desired temperature change rate, the current room heat transfer coefficient, and the reference heat transfer coefficient. By using the comprehensive efficiency index to judge the adjusted speed of the fan, it can adapt to the insufficient cooling or over-cooling phenomena caused by the fixed wind speed in the traditional rapid cooling mode, effectively avoid the energy waste caused by the fixed speed in specific scenarios, reduce the operating cost, and improve the user comfort.

[0079] In one embodiment, it further includes the step of:

[0080] When the difference between the indoor environmental temperature and the target temperature is less than a preset value, control the fan to reduce its speed until the speed reaches the corresponding speed value in the normal operation mode.

[0081] Specifically, when the difference between the indoor temperature and the target temperature is less than a certain set threshold (such as 2°C), it is determined that the temperature is close to the target value.

[0082] The speed adjustment can adopt a linear decrease or a non-linear decrease method to gradually reduce the speed value. Taking the linear decrease as an example, a decrease step size is set (such as reducing 50 revolutions per minute). When the difference between the temperature and the target temperature is less than 2°C, start to reduce the speed according to the step size. If the current speed is 1800 revolutions per minute, the target temperature is 25°C, and the current temperature is 26°C, with a difference of 1°C (less than 2°C), then the speed will be reduced by 50 revolutions per minute until the speed drops to the corresponding speed value in the normal operation mode.

[0083] In one embodiment, a control system for an air-conditioning fan is provided, which includes multiple air conditioners installed in different rooms, a memory, and a processor. The memory stores a computer program, and the processor executes the following steps: Detect that the current is in the fast cooling mode, and control the fan to operate at a preset initial speed; Obtain indoor environmental temperature data, outdoor environmental data, and room characteristic data; wherein, the room characteristic data includes room area, room orientation, and window area; Calculate the current temperature change rate according to the indoor environmental temperature data; Determine the current room heat transfer coefficient based on the outdoor environmental data, room area, room orientation, and window area; Determine a comprehensive efficiency index according to the current temperature change rate, the desired temperature change rate, the current room heat transfer coefficient, and the reference heat transfer coefficient; Determine the adjusted speed of the fan based on the initial speed, the comprehensive efficiency index, and a preset adjustment amplitude, and control the fan to operate at the adjusted speed.

[0084] In one embodiment, an air conditioner is provided, which includes an air-conditioning body, a memory, and a processor. The memory stores a computer program, and the processor executes the following steps: Detect that the current is in the fast cooling mode, and control the fan to operate at a preset initial speed; Obtain indoor environmental temperature data, outdoor environmental data, and room characteristic data; wherein, the room characteristic data includes room area, room orientation, and window area; Calculate the current temperature change rate according to the indoor environmental temperature data; Determine the current room heat transfer coefficient based on the outdoor environmental data, room area, room orientation, and window area; Determine a comprehensive efficiency index according to the current temperature change rate, the desired temperature change rate, the current room heat transfer coefficient, and the reference heat transfer coefficient; Determine the adjusted speed of the fan based on the initial speed, the comprehensive efficiency index, and a preset adjustment amplitude, and control the fan to operate at the adjusted speed.

[0085] In one embodiment, as Figure 3 shown, a control device for an air-conditioning fan is provided, including:

[0086] A detection module, configured to detect that the current is in the fast cooling mode and control the fan to operate at a preset initial speed;

[0087] An acquisition module, configured to acquire indoor environmental temperature data, outdoor environmental data, and room characteristic data; wherein, the room characteristic data includes room area, room orientation, and window area;

[0088] A first calculation module, configured to calculate the current temperature change rate according to the indoor environmental temperature data;

[0089] A second calculation module, configured to determine the current room heat transfer coefficient based on the outdoor environmental data, room area, room orientation, and window area;

[0090] The comprehensive efficiency index confirmation module is used to determine the comprehensive efficiency index according to the current temperature change rate, the desired temperature change rate, the current room heat transfer coefficient, and the reference heat transfer coefficient;

[0091] The speed regulation module is used to determine the adjusted speed of the fan based on the initial speed, the comprehensive efficiency index, and the preset adjustment amplitude, and control the fan to operate at the adjusted speed.

[0092] For the specific limitations of the control device of the air-conditioning fan, reference can be made to the limitations of the control method of the air-conditioning fan in the above text, which will not be elaborated here. Each module in the above control device of the air-conditioning fan can be implemented in whole or in part by software, hardware, and their combination. The above modules can be embedded in the processor of the computer device in hardware form or independent of it, or stored in the memory of the computer device in software form, so that the processor can call and execute the operations corresponding to the above modules. It should be noted that the division of modules in the embodiments of the present application is illustrative, only a logical function division, and there may be other division methods in actual implementation.

[0093] In one embodiment, a computer-readable storage medium is further provided, on which a computer program is stored. When the computer program is executed by a processor, the following steps are implemented:

[0094] Detect that the current is in the fast cooling mode, and control the fan to operate at the preset initial speed;

[0095] Obtain the indoor environmental temperature data, outdoor environmental data, and room characteristic data; among them, the room characteristic data includes the room area, room orientation, and window area;

[0096] Calculate the current temperature change rate according to the indoor environmental temperature data;

[0097] Determine the current room heat transfer coefficient based on the outdoor environmental data, room area, room orientation, and window area;

[0098] Determine the comprehensive efficiency index according to the current temperature change rate, the desired temperature change rate, the current room heat transfer coefficient, and the reference heat transfer coefficient;

[0099] Determine the adjusted speed of the fan based on the initial speed, the comprehensive efficiency index, and the preset adjustment amplitude, and control the fan to operate at the adjusted speed.

[0100] It will be understood that the embodiments described herein can be implemented in hardware, software, firmware, middleware, microcode, or any combination thereof. For a hardware implementation, the processing unit can be implemented in one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field-programmable gate arrays (FPGAs), general purpose processors, controllers, microcontrollers, microprocessors, other electronic units for performing the functions described in this application, or any combination thereof.

[0101] For a software implementation, the techniques described herein can be implemented by units that execute the functions described herein. The software code can be stored in a memory and executed by a processor. The memory can be implemented within the processor or externally to the processor.

[0102] Those of ordinary skill in the art will realize that the units and algorithm steps of the examples described in connection with the embodiments disclosed herein can be implemented in electronic hardware, or in a combination of computer software and electronic hardware. Whether these functions are executed in hardware or software depends on the specific application and design constraints of the technical solution. A professional technician can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of this application.

[0103] Those skilled in the art can clearly understand that for the convenience and brevity of description, the specific working processes of the systems, devices, and units described above can refer to the corresponding processes in the foregoing method embodiments and will not be elaborated herein.

[0104] In the embodiments provided in this application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the modules is only a logical functional division, and there can be other division methods in actual implementation. For example, multiple modules or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the couplings or direct couplings or communication connections shown or discussed with each other can be through some interfaces. The indirect couplings or communication connections of devices or units can be in electrical, mechanical, or other forms.

[0105] The unit described as a separation component may or may not be physically separated. The component shown as a unit may or may not be a physical unit, that is, it may be located in one place or distributed across multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0106] In addition, in each embodiment of the present application, each functional unit may be integrated into a processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit.

[0107] If the described function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the embodiments of the present application, in essence, or the part that contributes to the prior art, or part of this technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage medium includes: various media such as USB flash drives, mobile hard disks, ROM, RAM, magnetic disks, or optical discs that can store program codes. It should be noted that in this document, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. Without further limitations, the element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

[0108] The above description is only the specific implementation manners of the present application, enabling those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but rather to the broadest scope consistent with the principles and novel features claimed herein.

Claims

1. A method for controlling an air conditioner fan, characterized in that: include: It is detected that the current state is in the rapid cooling mode, and the fan is controlled to run at the preset initial speed; Acquire indoor environment temperature data, outdoor environment data and room characteristic data; wherein the room characteristic data includes room area, room orientation and window area; Calculating the current temperature change rate according to the indoor environment temperature data; Determine a current room heat transfer coefficient based on the outdoor environment data, the room area, the room orientation and the window area; Determining a comprehensive performance index according to the current temperature change rate, the expected temperature change rate, the current room heat transfer coefficient and the benchmark heat transfer coefficient; Based on the initial rotation speed, the comprehensive performance index and the preset adjustment amplitude, the adjustment rotation speed of the fan is determined, and the fan is controlled to operate at the adjusted rotation speed.

2. The control method of the air conditioner fan according to claim 1, characterized in that: The step of determining a comprehensive performance index according to the current temperature change rate, the expected temperature change rate, the current room heat transfer coefficient and the reference heat transfer coefficient comprises: Obtaining heat transfer weighting factors; Determining a first dimensionless value based on the current temperature change rate and the expected temperature change rate; determining a second dimensionless value based on the heat transfer weighting factor, the current room heat transfer coefficient, and the reference heat transfer coefficient; The sum of the first dimensionless value and the second dimensionless value is confirmed as the comprehensive performance index.

3. The control method of the air conditioner fan according to claim 2, characterized in that: In the step of determining a first dimensionless value based on the current temperature change rate and the expected temperature change rate, the first dimensionless value is obtained based on the following formula: ； in, is the first dimensionless value; is the current temperature change rate; is the expected temperature change rate.

4. The control method of the air conditioner fan according to claim 2, characterized in that: In the step of determining a second dimensionless value based on the heat transfer weighting factor, the current room heat transfer coefficient and the reference heat transfer coefficient, the second dimensionless value is obtained based on the following formula: ； in, is the second dimensionless value; is the heat transfer weighting factor; is the current room heat transfer coefficient; is the reference heat transfer coefficient; is the dynamic threshold.

5. The control method of the air conditioner fan according to claim 4, characterized in that: The dynamic threshold is obtained according to the outdoor temperature.

6. The control method of the air conditioner fan according to claim 1, characterized in that: The preset adjustment amplitude includes a positive adjustment amplitude and a reverse adjustment amplitude; The step of determining the adjusted speed of the fan based on the initial speed, the comprehensive efficiency index and the preset adjustment amplitude includes: Using the comprehensive performance index, selecting a positive adjustment amplitude or a negative adjustment amplitude; The adjusted speed of the fan is determined based on the product of the forward adjustment amplitude and the comprehensive performance index, or the adjusted speed of the fan is determined based on the product of the reverse adjustment amplitude and the comprehensive performance index.

7. The control method of the air conditioner fan according to claim 1, characterized in that: Also includes the steps: When the indoor ambient temperature and the target temperature are less than preset values, the fan is controlled to reduce the rotation speed until the rotation speed reaches the corresponding rotation speed value in the normal operating mode.

8. A control system for an air conditioner fan, comprising a plurality of air conditioners arranged in different rooms, a memory and a processor; the memory stores a computer program, characterized in that: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 7 are implemented.

9. An air conditioner, comprising an air conditioner body, a memory and a processor; the memory stores a computer program, characterized in that: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 7 are implemented.

10. A control device for an air conditioner fan, characterized in that: include: A detection module, used to detect that the current state is in a rapid cooling mode, and control the fan to run at a preset initial speed; An acquisition module, used to acquire indoor environment temperature data, outdoor environment data and room characteristic data; wherein the room characteristic data includes room area, room orientation and window area; A first calculation module, used for calculating the current temperature change rate according to the indoor environment temperature data; A second calculation module, configured to determine a current room heat transfer coefficient based on the outdoor environment data, the room area, the room orientation and the window area; A comprehensive performance index confirmation module, used to determine a comprehensive performance index according to the current temperature change rate, the expected temperature change rate, the current room heat transfer coefficient and the reference heat transfer coefficient; The speed regulating module is used to determine the adjusted speed of the fan based on the initial speed, the comprehensive performance index and the preset adjustment amplitude, and control the fan to operate at the adjusted speed.

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