Control method of air conditioner and air conditioner

Abstract

The invention provides a control method of an air conditioner and the air conditioner. The air conditioner comprises a registration medium. The control method comprises the steps that it is determined that the draught fan in the starting state needs to be loaded or deloaded; and the actual air outlet amount of the fan wall is obtained, and the number of fans needing to be started by the fan wall is determined according to the actual air outlet amount of the fan wall. And the fans are turned on or turned off according to the determined number of the fans needing to be turned on by the fan wall, so that the number of the fans, in the turned-on state, in the fan wall is consistent with the number of the fans needing to be turned on by the fan wall. And meanwhile, the rotating speed of the draught fan in the starting state is adjusted so as to meet the loading or unloading requirement. And a single fan can operate at a high-efficiency point, and the overall energy conservation of the air conditioning unit is maximized.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning, and in particular to a control method of an air conditioner and an air conditioner. Background Art

[0002] In the existing air conditioning units, variable frequency brushless DC fans are used as the air supply fans of the air conditioning units, and at least two variable frequency brushless DC fans are installed in parallel on the fan wall. The indoor temperature is detected by the indoor temperature sensor, and the frequency of the variable frequency brushless DC fan is adjusted according to the difference between the indoor temperature and the target temperature, thereby adjusting the overall air supply volume of the air conditioning unit to achieve constant indoor temperature and achieve energy saving. However, during the adjustment process, while the operating power of the air conditioning unit decreases, the operating efficiency of a single fan also decreases, and the single fan operates at a non-high efficiency point, resulting in poor overall energy saving effect of the air conditioning unit and failure to meet the expected energy saving requirements. Summary of the invention

[0003] In view of the above problems, the present invention is proposed to provide a control method and an air conditioner for overcoming the above problems or at least partially solving the above problems. The problem that a single fan of a conventional air conditioner operates at a non-high efficiency point when the operating power of the unit decreases is solved, and the purpose of maximizing the overall energy consumption reduction of the air conditioner is achieved.

[0004] Specifically, the present invention provides a control method for an air conditioner, wherein the air conditioner comprises a fan wall, and the fan wall comprises a plurality of fans. The control method comprises a load increase and decrease procedure:

[0005] Load or reduce the load on the fan that is currently turned on;

[0006] Obtaining the actual air output of the fan wall;

[0007] Determine the number of fans that need to be turned on in the fan wall according to the actual air output, and obtain the number of fans;

[0008] The fan is newly turned on or off, so that the number of fans in the turned-on state is the number of fans;

[0009] Controlling parameters of the fan in the re-determined on state;

[0010] The fans in the re-determined on state continue to be loaded or unloaded.

[0011] Optionally, the control method includes:

[0012] Obtaining the air inlet temperature of the indoor unit of the air conditioner;

[0013] Determine whether the fan wall needs to be loaded or unloaded according to the inlet air temperature and the target temperature, and run the loading and unloading program.

[0014] Optionally, determining the number of fans that need to be turned on in the fan wall according to the actual air output includes:

[0015] The number of fans that need to be turned on in the fan wall is determined according to the actual air output and whether loading or unloading is completed; or the number of fans that need to be turned on in the fan wall is determined only according to the actual air output.

[0016] Optionally, determining the number of fans that need to be turned on in the fan wall according to the actual air output includes:

[0017] According to the actual air volume Q k Rated total air volume Q of fan wall max Calculate the fan start-up demand rate E f , E f =Q k / Q max ;

[0018] According to the fan startup demand rate E f The number of fans that need to be turned on is calculated by the total number of fans, and the number of fans N is obtained, N = E f *The total number of fans mentioned above, N value is rounded up.

[0019] Optionally, the control method further includes:

[0020] When the fan is newly started, it runs at the maximum speed, the rated speed or the preset speed.

[0021] Optionally, the parameters of the fan in the re-determined on state are controlled to include:

[0022] Control the parameters of the fans in the re-determined on state so that the speed of each fan turned on is the rated speed; or,

[0023] The parameters of the fans in the re-determined on state are controlled so that the actual air volume of the fan wall is equal to the last actual air volume before the number of fans is changed.

[0024] Optionally, determining whether the fan wall needs to be loaded or unloaded according to the inlet air temperature and the target temperature includes:

[0025] In cooling mode, when the return air temperature ≥ target temperature + start-stop hysteresis and lasts for a first preset time, it is determined that loading is required; or,

[0026] In cooling mode, when the return air temperature is less than the target temperature + the start-stop differential and lasts for a first preset time, it is determined that load reduction is required; or,

[0027] In heating mode, when the return air temperature ≥ target temperature + start-stop differential and lasts for a second preset time, it is determined that load reduction is required; or,

[0028] In heating mode, when the return air temperature is less than the target temperature + the start-stop hysteresis difference and lasts for a second preset time, it is determined that loading is required.

[0029] Optionally, loading or unloading a fan in an on state includes:

[0030] When the load is reduced, the fan currently turned on lowers its speed according to the first preset value;

[0031] During loading, the fan currently in the on state increases its speed according to the second preset value.

[0032] Optionally, for the fan currently turned on, when load shedding is performed, when the fan speed reaches a minimum, the actual air volume of the fan wall is obtained; when load shedding is performed, when the fan speed reaches a maximum, the actual air volume of the fan wall is obtained; or,

[0033] For the fans that are currently turned on, the actual air output of the fan wall is obtained in real time.

[0034] Furthermore, the present invention also provides an air conditioner, comprising a processor and a memory storing program instructions, wherein the processor is configured to execute any one of the above control methods for the air conditioner when executing the program instructions.

[0035] A control method for an air conditioner of the present invention determines whether a fan in an on state needs to be loaded or unloaded. The actual air volume of a fan wall is obtained, and the number of fans that need to be turned on in the fan wall is determined according to the actual air volume of the fan wall. The fan is turned on or off according to the determined number of fans that need to be turned on in the fan wall, so that the number of fans in the on state in the fan wall is consistent with the number of fans that need to be turned on in the fan wall. The single fan is operated at a high efficiency point, and the overall energy saving of the air conditioner unit is maximized.

[0036] Based on the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings, those skilled in the art will become more aware of the above and other objects, advantages and features of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale. In the accompanying drawings:

[0038] Figure 1 is a flow chart of adding and reducing load in a method for controlling an air conditioner according to an embodiment of the present invention;

[0039] Figure 2 is a flow chart of load shedding in a method for controlling an air conditioner according to an embodiment of the present invention;

[0040] Figure 3 is a flowchart loaded in a control method of an air conditioner according to an embodiment of the present invention;

[0041] Figure 4 is a system diagram of an air conditioner according to an embodiment of the present invention;

[0042] Figure 5 is a schematic diagram of a method for controlling an air conditioner according to an embodiment of the present invention. DETAILED DESCRIPTION

[0043] Refer to the following Figures 1 to 5 To describe the control method of the air conditioner and the air conditioner of the embodiment of the present invention. In the description of this embodiment, it should be understood that the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features, that is, include one or more of the features. In the description of the present invention, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. When a feature "includes or contains" one or some of the features it covers, unless otherwise specifically described, this indicates that other features are not excluded and may further include other features.

[0044] Unless otherwise clearly defined and limited, the terms "set", "install", "connect", "connect", "fix", "couple" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. A person skilled in the art should be able to understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0045] In addition, in the description of this embodiment, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. That is, in the description of this embodiment, the first feature being "above", "above", and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature being "below", "below", or "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0046] In the description of the present embodiment, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0047] Figure 1 FIG. 1 is a flow chart of adding and reducing load in a method for controlling an air conditioner according to an embodiment of the present invention. Figure 1 As shown, and refer to Figures 2 to 5 The embodiment of the present invention provides a control method for an air conditioner. The air conditioner includes a fan wall, and the fan wall includes a plurality of fans. The control method includes a load-on / load-off procedure:

[0048] Step S1: Loading or unloading the fan currently in the on state.

[0049] Step S2: Obtain the actual air output of the fan wall.

[0050] Step S3: Determine the number of fans that need to be turned on in the fan wall according to the actual air output, and obtain the number of fans.

[0051] Step S4: newly turning on a fan or turning off a fan, so that the number of fans in the turned-on state is the number of fans.

[0052] Step S5: Controlling the parameters of the fan in the re-determined on state.

[0053] Step S6: Continue to load or unload the wind turbine in the re-determined on state.

[0054] That is to say, the working process of the air conditioner includes: determining whether the fans in the turned-on state need to be loaded or unloaded. Obtaining the actual air volume of the fan wall, and determining the number of fans that need to be turned on in the fan wall according to the actual air volume of the fan wall. Turning on or off the fans according to the number of fans that need to be turned on in the fan wall is determined, so that the number of fans in the turned-on state in the fan wall is consistent with the number of fans that need to be turned on in the fan wall, so that a single fan can be operated at a high efficiency point, and the overall energy saving of the air conditioner unit can be maximized.

[0055] In some embodiments of the present invention, the control method further includes: obtaining the air inlet temperature of the indoor unit of the air conditioner, determining whether the fan wall needs to be loaded or unloaded according to the air inlet temperature and the target temperature, and running the loading and unloading program.

[0056] In this embodiment, the air inlet temperature of the air conditioner is measured, the deviation between the air inlet temperature and the target temperature is compared, and finally the fan wall operation loading or unloading is determined according to the deviation between the air inlet temperature and the target temperature. The air inlet temperature measurement is simple and convenient.

[0057] In some embodiments of the present invention, in cooling mode, determining whether the fan wall needs to be loaded or unloaded according to the inlet air temperature and the target temperature includes: when the inlet air temperature is ≥ the target temperature + the start-stop hysteresis difference, and it lasts for a first preset time, it is determined that loading is required. When the return air temperature is < the target temperature + the start-stop hysteresis difference, and it lasts for a first preset time, it is determined that unloading is required. The first preset time can be any value, and is preferably 3 minutes for the convenience of control.

[0058] In this embodiment, the start-stop hysteresis of the air conditioner is preset, the air inlet temperature of the air conditioner is obtained, and the relationship between the air inlet temperature, the target temperature + the start-stop hysteresis is determined. The load or unload of the air conditioner operation is determined based on the relationship between the air inlet temperature, the target temperature + the start-stop hysteresis. The conditions for loading or unloading the air conditioner are intuitive and clear.

[0059] Of course, in some embodiments of the present invention, in the heating mode, the fan wall needs to be loaded or unloaded according to the inlet air temperature and the target temperature, including: when the return air temperature ≥ the target temperature + the start-stop hysteresis difference, and it lasts for the second preset time, the load-on and load-off program is run. When the return air temperature < the target temperature + the start-stop hysteresis difference, and it lasts for the second preset time, the load-on and load-off program is run. The second preset time can be any value, which may not be equal to the first preset time, or it may be equal to the first preset time. For the convenience of control, it is preferably 3 minutes.

[0060] In some embodiments of the present invention, whether the fan wall has completed loading or unloading is determined based on the deviation between the inlet air temperature and the target temperature. Specifically, during the loading process in cooling, when the inlet air temperature is less than the target temperature and continues for the third preset time, the loading and unloading program is exited. During cooling and unloading, when the inlet air temperature is ≥ the target temperature and continues for the fourth preset time, the loading and unloading program is exited. During heating and unloading, when the inlet air temperature is less than the target temperature and continues for the fifth preset time, the loading and unloading program is exited. During heating, when the inlet air temperature is ≥ the target temperature and continues for the sixth preset time, the loading and unloading program is exited.

[0061] In this embodiment, the inlet air temperature is obtained, and the deviation between the inlet air temperature and the target temperature is compared. The air conditioner is controlled to exit the loading and unloading program by the temperature deviation. The inlet air temperature is easy to obtain, which is convenient for controlling the air conditioner to exit the loading and unloading program.

[0062] Furthermore, at any time in the loading and unloading procedure, especially in step S5 and step S6, if the conditions for completing loading or unloading of the wind turbine wall are met, the loading and unloading procedure is exited.

[0063] In some embodiments of the present invention, determining the number of fans that need to be turned on in the fan wall according to the actual air output includes: determining the number of fans that need to be turned on in the fan wall according to the actual air output. The actual air output is simple and easy to measure. In this embodiment, the fans of the fan wall are allowed to run at a maximum speed, and the maximum speed is greater than the rated speed.

[0064] In some embodiments of the present invention, determining the number of fans that need to be turned on in the fan wall according to the actual air output includes: determining the number of fans that need to be turned on in the fan wall according to the actual air output and whether the fan wall has completed loading or unloading. In this embodiment, the fan is not allowed to adjust to the maximum speed. If the fan reaches the rated speed, the actual air output cannot be increased at this time. If the fan reaches the rated speed and completes loading or unloading, the number of fans that need to be turned on in the fan wall is no longer adjusted. If the fan reaches the rated speed and has not completed loading or unloading, the number of fans that need to be turned on in the fan wall is adjusted according to the loading or unloading requirements.

[0065] In some embodiments of the present invention, determining the number of fans that need to be turned on in the fan wall according to the actual air volume includes: determining the number of fans that need to be turned on in the fan wall according to the actual air volume Q k Rated total air volume Q of fan wall max Calculate the fan start-up demand rate E f , E f =Q k / Q max . According to the fan startup demand rate E f Calculate the number of fans that need to be turned on based on the total number of fans. The number of fans that need to be turned on N = Ef * The total number of fans, N value is rounded up. That is to say, when the calculated N value is 5.1, it is rounded up to 6 instead of 5.

[0066] In this embodiment, the rated total air volume of the fan wall is Q max The total number of fans is related to the factory settings of the air conditioner and is a fixed value for the same air conditioner. k It is simple and easy to measure, and the number of fans that need to be turned on N is easy to calculate. It should be noted that the rated total air volume Q of the fan wall max It is the product of the total number of fans in the fan wall and the rated air volume of a single fan. The rated air volume of a single fan is the air volume corresponding to its rated speed. The air volume of a single fan is positively correlated with the speed, and the maximum speed of each fan in actual operation is greater than the rated speed, and the minimum speed is less than the rated speed.

[0067] In some embodiments of the present invention, when the fan is newly turned on, the newly turned on fan runs at a rated speed. Or when the fan is newly turned on, the newly turned on fan runs at a preset speed. In this embodiment, the speed of the newly turned on fan is preset to facilitate subsequent adjustment.

[0068] In some embodiments of the present invention, the control method of the air conditioner further includes: when the fan is newly turned on, the newly turned on fan runs at the maximum speed. In this embodiment, the original turned on fan runs at the maximum speed, and the newly turned on fan also runs at the maximum speed, which means that the speed of the newly turned on fan is consistent with the speed of the original turned on fan, which is convenient for synchronous adjustment of the speed.

[0069] In some embodiments of the present invention, controlling the parameters of the fans in the re-determined on state includes: controlling the parameters of the fans in the re-determined on state so that the speed of each fan that is turned on is the rated speed. In this embodiment, each fan after the adjustment quantity is first made to reach the rated speed, and then the load is added and reduced to facilitate the operation of load addition and reduction. Of course, it should be noted that in this step, if the conditions for the fan wall to complete loading or unloading are met, the load addition and reduction program can be exited. At this time, the speed of the fan may not reach the rated speed, but it is as close to the rated speed as possible, that is, under the existing conditions, the fan is made to operate as efficiently as possible.

[0070] In some embodiments of the present invention, controlling the parameters of the fan in the re-determined on state so that the speed of each fan turned on is the rated speed includes: during load reduction operation, after the fan is turned off, the fan in the current on state increases the speed to the rated speed according to the third preset value. During load operation, after the fan is newly turned on and the newly turned on fan runs at the maximum speed, the fan in the current on state decreases the speed to the rated speed according to the fourth preset value. During load operation, after the fan is newly turned on and the newly turned on fan runs at the preset speed, the fan in the original on state decreases the speed to the rated speed according to the fourth preset value. The third preset value and the fourth preset value may not be equal, but of course they may be equal. The third preset value and the fourth preset value may be any value, in revolutions per minute, and of course their values ​​may be Y revolutions per minute, or Y revolutions per 3 minutes, where Y may be a preset value, or may be obtained by multiplying the rated speed of the fan by a fixed percentage.

[0071] In this embodiment, the third preset value and the fourth preset value are set to facilitate the control of the adjustment range of the fan speed in the load addition and reduction program.

[0072] In some embodiments of the present invention, controlling the parameters of the fan in the re-determined on state includes: controlling the parameters of the fan in the re-determined on state so that the actual air output of the fan wall is equal to the last actual air output before changing the number of fans, so as to facilitate further load addition and reduction.

[0073] In some embodiments of the present invention, loading or unloading a fan in an on state includes: when unloading, the fan in the currently on state lowers its speed according to a first preset value. When loading, the fan in the currently on state increases its speed according to a second preset value. The first preset value and the second preset value may be unequal, or may be equal. The first preset value and the second preset value may be any value, in revolutions per minute, and may be Y revolutions per minute or Y revolutions per 3 minutes, where Y may be a preset value or may be obtained by multiplying the rated speed of the fan by a fixed percentage.

[0074] In this embodiment, the first preset value is set to facilitate the control of the adjustment range of the rotation speed during loading, and the second preset value is set to facilitate the control of the adjustment range of the rotation speed during unloading.

[0075] In some embodiments of the present invention, the air conditioner calculates the actual air volume by measuring the wind speed at the air outlet.

[0076] In some embodiments of the present invention, for the fan currently turned on, during the load reduction process, when the fan speed reaches the minimum, the actual air volume of the fan wall is obtained, and the acquisition at this time can also be obtained by calculation. For the fan currently turned on, during the loading process, when the fan speed reaches the maximum, the actual air volume of the fan wall is obtained, and the acquisition at this time can also be obtained by calculation. In this case, multiple fans may be newly turned on or off at the same time, for example, two fans may be newly turned on at the same time, which is related to the rated speed, minimum speed and maximum speed set for the fan.

[0077] In some embodiments of the present invention, the air conditioner calculates the actual air volume by measuring the wind speed at the air outlet. For the fan currently turned on, during the load reduction process, when the fan speed does not reach the minimum but meets the requirement of shutting down a fan, the actual air volume of the fan wall is obtained in real time. For the fan currently turned on, during the loading process, when the fan speed does not reach the maximum but meets the requirement of starting a new fan, the actual air volume of the fan wall is obtained in real time.

[0078] In some embodiments of the present invention, in order to prevent the fan from being mis-adjusted, when it is determined that the fan needs to be newly turned on or off, it is not immediately turned on or off, but after a preset time has passed and it is determined that the fan needs to be newly turned on or off within the preset time, the fan is newly turned on or off. The preset time is 2 to 4 minutes, preferably 3 minutes.

[0079] like Figure 5 As shown, combined with Figure 4 The embodiment of the present invention further provides an air conditioner. The air conditioner includes a fan wall, a processor, and a memory storing program instructions. The processor is configured to execute the control method for the air conditioner in any of the above embodiments when executing the program instructions. The fan wall includes a plurality of fans.

[0080] In this embodiment, by adjusting the number of fans in the fan wall that are turned on and the speed of the fans that are turned on, it is ultimately achieved that a single fan operates at a high efficiency point while meeting the requirements of the air conditioner operating parameters, and the overall energy saving of the air conditioning unit is maximized.

[0081] Furthermore, the air conditioner further comprises a primary filter, an electronic purification filter, a two-stage cold coil, a plate-type muffler section, an analog electric water volume regulating valve, a return air temperature sensor 30 , a supply air temperature sensor 20 , and a duct wind speed transmitter 40 . The processor may be a PLC controller 10 .

[0082] In this embodiment, the return air temperature sensor 30 is used to measure the return air temperature, and the supply air temperature sensor 20 is used to measure the supply air temperature. The duct wind speed transmitter 40 is used to obtain the outlet air speed and calculate the actual outlet air volume according to the outlet air speed and the duct cross-sectional area.

[0083] At this point, those skilled in the art should recognize that, although multiple exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications that conform to the principles of the present invention can still be directly determined or derived based on the content disclosed in the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and recognized as covering all these other variations or modifications.

Claims

1. A method for controlling an air conditioner, characterized in that: The air conditioner comprises a fan wall, and the fan wall comprises a plurality of fans; The control method includes a loading and unloading procedure: Load or reduce the load on the fan that is currently turned on; Obtaining the actual air output of the fan wall; Determine the number of fans that need to be turned on in the fan wall according to the actual air output, and obtain the number of fans; The fan is newly turned on or off, so that the number of fans in the turned-on state is the number of fans; Controlling parameters of the fan in the re-determined on state; The fans in the re-determined on state continue to be loaded or unloaded.

2. The air conditioner control method according to claim 1, characterized in that: The control method comprises: Obtaining the air inlet temperature of the indoor unit of the air conditioner; Determine whether the fan wall needs to be loaded or unloaded according to the inlet air temperature and the target temperature, and run the loading and unloading program.

3. The air conditioner control method according to claim 1, characterized in that: Determining the number of fans that need to be turned on in the fan wall according to the actual air output includes: The number of fans that need to be turned on in the fan wall is determined according to the actual air output and whether loading or unloading is completed; or the number of fans that need to be turned on in the fan wall is determined only according to the actual air output.

4. The control method of the air conditioner according to claim 3, characterized in that: Determining the number of fans that need to be turned on in the fan wall according to the actual air output includes: According to the actual air volume Q k Rated total air volume Q of fan wall max Calculate the fan start-up demand rate E f , E f =Q k / Q max ; According to the fan startup demand rate E f The number of fans that need to be turned on is calculated by the total number of fans, and the number of fans N is obtained, N = E f *The total number of fans mentioned above, N value is rounded up.

5. The air conditioner control method according to claim 1, characterized in that: Also includes: When the fan is newly started, it runs at the maximum speed, the rated speed or the preset speed.

6. The air conditioner control method according to claim 1, characterized in that: The parameters that control the fan to the re-established on state include: Control the parameters of the fans in the re-determined on state so that the speed of each fan turned on is the rated speed; or, The parameters of the fans in the re-determined on state are controlled so that the actual air volume of the fan wall is equal to the last actual air volume before the number of fans is changed.

7. The air conditioner control method according to claim 2, characterized in that: Determining whether the fan wall needs to be loaded or unloaded according to the inlet air temperature and the target temperature includes: In cooling mode, when the return air temperature ≥ target temperature + start-stop hysteresis and lasts for a first preset time, it is determined that loading is required; or, In cooling mode, when the return air temperature is less than the target temperature + the start-stop differential and lasts for a first preset time, it is determined that load reduction is required; or, In heating mode, when the return air temperature ≥ target temperature + start-stop differential and lasts for a second preset time, it is determined that load reduction is required; or, In heating mode, when the return air temperature is less than the target temperature + the start-stop hysteresis difference and lasts for a second preset time, it is determined that loading is required.

8. The air conditioner control method according to claim 1, characterized in that: Loading or unloading of fans in the on state includes: When the load is reduced, the fan currently turned on lowers its speed according to the first preset value; During loading, the fan currently in the on state increases its speed according to the second preset value.

9. The air conditioner control method according to claim 2, characterized in that: For the fan currently turned on, when load shedding is performed, when the fan speed reaches the minimum, the actual air volume of the fan wall is obtained; when load shedding is performed, when the fan speed reaches the maximum, the actual air volume of the fan wall is obtained; or, For the fans that are currently turned on, the actual air output of the fan wall is obtained in real time.

10. An air conditioner, characterized in that: The invention comprises a fan wall, a processor and a memory storing program instructions, wherein the fan wall comprises a plurality of fans, and the processor is configured to execute the control method for an air conditioner according to any one of claims 1 to 9 when executing the program instructions.

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