A multi-split air conditioner control method, device, equipment and air conditioner

Abstract

The application provides a kind of multi-split air conditioner control method, device, equipment and air conditioner, when multi-split air conditioner runs, the temperature of each temperature control area is detected in real time, when it is detected that a certain temperature control area reaches the set temperature corresponding thereto, the temperature control area is target area, the air conditioner inner fan corresponding to the target area is recorded as target fan, and the purpose of reducing the power consumption of the air conditioner inner fan of the temperature control area is achieved by the following strategy control to the target fan.

Description

Technical Field

[0001] This invention relates to the field of household equipment technology, specifically to a method, device, equipment, and air conditioner control for multi-split air conditioners. Background Technology

[0002] In existing technologies, when a multi-split air conditioner is turned on for heating, if one or more rooms reach the desired temperature and shut off, while the remaining rooms have not yet reached the desired temperature, the indoor and outdoor units of the air conditioner will continue to run. This can cause the rooms that have reached the desired temperature to become overheated or cold, resulting in a poor user experience and a waste of resources. Summary of the Invention

[0003] In view of this, embodiments of the present invention provide a method, apparatus, device and air conditioner for controlling multiple air conditioners, so as to reduce the losses of multiple air conditioners.

[0004] To achieve the above objectives, the embodiments of the present invention provide the following technical solutions:

[0005] A method for controlling multiple air conditioning units in a single system includes:

[0006] Get the temperature of the temperature control zone corresponding to N air conditioner indoor fans driven by the same outdoor unit. Different air conditioner indoor fans are used to adjust the temperature of different temperature control zones. N is a positive integer not less than 2.

[0007] Determine whether the ambient temperature of the temperature control area corresponding to the air conditioner's indoor fan has reached the set temperature, and record the temperature control area that has reached the set temperature as the target area, and record the air conditioner's indoor fan corresponding to the target area as the target fan;

[0008] The rate of temperature change of the indoor space corresponding to the target area is obtained without turning on the air conditioner's internal fan, and is denoted as the first temperature change rate.

[0009] The temperature change rate of the target area when the target fan is turned on is obtained and denoted as the second temperature change rate.

[0010] Compare the magnitudes of the second temperature change rate and the first temperature change rate;

[0011] Obtain and compare the corresponding fan start-up and fan shutdown times;

[0012] The target fan is turned on and off based on the stated on and off times.

[0013] Optionally, in the above-mentioned multi-split air conditioning control method, obtaining the fan start time and fan stop time corresponding to the comparison result includes:

[0014] When the second temperature change rate is greater than the first temperature change rate, the fan start time T1': T1' = T1 + t, the fan shutdown time T2': T2' = T2 - t, where T1 is the first preset duration, T2 is the second preset duration, and t is the correction duration;

[0015] When the second temperature change rate is less than the first temperature change rate, the fan start time T1”: T1” = T1-t, and the fan shutdown time T2”: T2” = T2+t.

[0016] Optionally, in the above-mentioned multi-split air conditioning control method, t is proportional to the difference between the second temperature change rate and the first temperature change rate.

[0017] Optionally, in the above-mentioned multi-split air conditioning control method, different temperature control zones correspond to different set temperatures. Determining whether the ambient temperature of the temperature control zone corresponding to the air conditioner's internal fan has reached the set temperature includes:

[0018] Determine whether the ambient temperature of the temperature control zone corresponding to the air conditioner's internal fan has reached the set temperature corresponding to the temperature control zone.

[0019] Optionally, in the above-mentioned multi-split air conditioning control method, the temperature change rate of the indoor space corresponding to the target area is obtained when the indoor fan of the air conditioner is not turned on, and is recorded as the first temperature change rate; the temperature change rate of the target area is obtained when the target fan is turned on, and is recorded as the second temperature change rate; including:

[0020] If the target fan is currently off, the first temperature change rate corresponding to the current time is obtained by detecting the temperature change rate of the target area, and the air conditioning temperature change rate in the previous time period is obtained and used as the second temperature change rate. The previous time period refers to the time period when the target fan was last turned on.

[0021] If the target fan is currently on, the second temperature change rate corresponding to the current time is obtained by detecting the temperature change rate of the target area, and the temperature change rate of the air conditioner in the previous time period is obtained and used as the first temperature change rate. The previous time period refers to the time period when the target fan was last turned off.

[0022] A multi-split air conditioning control device, comprising:

[0023] The temperature acquisition unit is used to acquire the temperature of the temperature control zone corresponding to N air conditioner indoor fans driven by the same outdoor unit. Different air conditioner indoor fans are used to adjust the temperature of different temperature control zones, where N is a positive integer not less than 2.

[0024] The temperature determination unit is used to determine whether the ambient temperature of the temperature control area corresponding to the air conditioner's indoor fan has reached the set temperature, and to record the temperature control area that has reached the set temperature as the target area, and to record the air conditioner's indoor fan corresponding to the target area as the target fan.

[0025] The first rate of change acquisition unit is used to acquire the rate of temperature change of the indoor space corresponding to the target area without turning on the air conditioner's internal fan, and is denoted as the first temperature rate of change.

[0026] The second rate of change acquisition unit is used to acquire the temperature change rate of the target area when the target fan is turned on, and is denoted as the second temperature change rate.

[0027] A rate of change comparison unit is used to compare the magnitude of the second temperature change rate with the first temperature change rate;

[0028] The start-up and shutdown duration acquisition unit is used to acquire the fan start-up time and fan shutdown time corresponding to the comparison results;

[0029] A fan control unit is used to turn the target fan on and off based on the start-up and stop-down times.

[0030] Optionally, in the above-mentioned multi-split air conditioning control device, the start-up / stop duration acquisition unit, when acquiring the fan start-up time and fan stop-down time corresponding to the comparison result, is specifically used for:

[0031] When the second temperature change rate is greater than the first temperature change rate, the fan start time T1': T1' = T1 + t, the fan shutdown time T2': T2' = T2 - t, where T1 is the first preset duration, T2 is the second preset duration, and t is the correction duration;

[0032] When the second temperature change rate is less than the first temperature change rate, the fan start time T1”: T1” = T1-t, and the fan shutdown time T2”: T2” = T2+t.

[0033] Optionally, the above-mentioned multi-split air conditioning control device also includes:

[0034] The correction duration calculation unit is used to calculate the correction duration t based on the difference between the second temperature change rate and the first temperature change rate, wherein t is proportional to the difference between the second temperature change rate and the first temperature change rate.

[0035] A multi-split air conditioning control device, comprising:

[0036] Memory and processor;

[0037] The memory is used to store programs;

[0038] The processor is used to execute the program to implement each step of the multi-split air conditioning control method described above.

[0039] An air conditioner, characterized in that it includes the aforementioned multi-split air conditioner control device.

[0040] Based on the above technical solution, the above solution provided by the embodiments of the present invention detects the temperature of each temperature control zone in real time when the multi-split air conditioner is running. When a certain temperature control zone is detected to reach the corresponding set temperature, the temperature control zone is designated as the target zone, and the air conditioner fan corresponding to the target zone is designated as the target fan. By implementing the following strategy control on the target fan, the power consumption of the air conditioner fan in the temperature-reaching zone (the zone where the ambient temperature reaches the set temperature) is reduced. Attached Figure Description

[0041] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0042] Figure 1 This is a schematic flowchart of the multi-split air conditioning control method disclosed in an embodiment of this application;

[0043] Figure 2 A flowchart illustrating a multi-split air conditioning control method disclosed in another embodiment of this application;

[0044] Figure 3 This is a schematic diagram of the structure of the multi-split air conditioning control device disclosed in the embodiments of this application;

[0045] Figure 4 This is a schematic diagram of the structure of a multi-split air conditioning control device disclosed in an embodiment of this application. Detailed Implementation

[0046] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0047] To reduce resource waste, this application discloses a multi-split air conditioning control method. This method alternately controls the opening and closing of the air conditioner fan corresponding to the temperature control zone that has reached the set temperature, so that the temperature of the temperature control zone that has reached the set temperature will not overheat and will not drop to the user's required temperature, and reduces the energy waste of the air conditioner fan.

[0048] For details, see Figure 1 This application discloses a method for controlling multiple air conditioners, the method including steps S101-S107.

[0049] Step S101: Obtain the temperature of the temperature control zone corresponding to the N air conditioner indoor fans driven by the same outdoor unit.

[0050] In a multi-split air conditioner, one outdoor unit will simultaneously drive multiple indoor air conditioner fans. Each indoor air conditioner fan is used to adjust the temperature of its corresponding temperature control zone. Different indoor air conditioner fans may correspond to the same or different temperature control zones. Here, N is a positive integer not less than 2. For example, the indoor air conditioner fans may include R1, R2, and R3. The temperature control zone corresponding to R1 is A1, the temperature control zone corresponding to R2 is A2, and the temperature control zone corresponding to R3 is A3.

[0051] Step S102: Determine whether the ambient temperature of the temperature control zone corresponding to the air conditioner's internal fan has reached the set temperature.

[0052] During the operation of the multi-split air conditioner, the temperature of the temperature control zone corresponding to each air conditioner's internal fan is monitored in real time to determine whether the ambient temperature of the temperature control zone has reached the set temperature. In this solution, a set temperature can be set according to the temperature requirements of different temperature control zones. The set temperatures for different temperature control zones can be the same or different. Specifically, determining whether the ambient temperature of the temperature control zone corresponding to the internal fan of the air conditioner has reached the set temperature for that zone is as follows:

[0053] When a temperature control zone is detected to have reached its corresponding set temperature, that temperature control zone is designated as the target zone, and the air conditioner fan corresponding to the target zone is designated as the target fan. By implementing the following strategy to control the target fan, the power consumption of the air conditioner fan in the temperature-controlled zone (the zone where the ambient temperature reaches the set temperature) can be reduced.

[0054] Step S103: Obtain the temperature change rate of the indoor space corresponding to the target area without turning on the air conditioner's internal fan, and record it as the first temperature change rate.

[0055] In this solution, in order to maintain the temperature stability of the target area, it is necessary to detect the temperature change rate of the target area. The temperature change rate can include the temperature change rate of the target area when the air conditioner fan is not turned on, and the temperature change rate of the target area when the target fan is turned on.

[0056] When obtaining the temperature change rate of the target area without turning on the air conditioner's internal fan, the air conditioner can identify the indoor environment of the target area, collect the three-dimensional parameter values ​​of the indoor space, and obtain the heat dissipation effect. This value will change with the indoor environment and the opening and closing of indoor doors and windows. Of course, the temperature change rate of the indoor space corresponding to the target area can also be obtained by monitoring the temperature change of the target area in real time with the air conditioner's internal fan turned off.

[0057] Step S104: Obtain the temperature change rate of the target area when the target fan is turned on, and record it as the second temperature change rate.

[0058] In this step, with the target fan turned on, the temperature sensor can detect the temperature change in the target area and measure the second temperature change rate corresponding to the target area.

[0059] Step S105: Compare the second temperature change rate with the first temperature change rate.

[0060] After obtaining the first temperature change rate and the second temperature change rate, this step requires comparing the magnitudes of these two temperature change rates. Based on their magnitudes, appropriate start-up and shutdown times need to be configured for the target fan. For example, when the first temperature change rate is greater than the second temperature change rate, the start-up time of the target fan needs to be increased appropriately and the shutdown time of the target fan needs to be decreased appropriately. When the first temperature change rate is less than the second temperature change rate, the start-up time of the target fan needs to be decreased appropriately and the shutdown time of the target fan needs to be increased appropriately.

[0061] Step S106: Obtain the fan start time and fan stop time corresponding to the comparison results.

[0062] In this step, after obtaining the comparison results of the first temperature change rate and the second temperature change rate, it is necessary to obtain the corresponding fan start time and fan stop time based on the comparison results.

[0063] In this scheme, the fan start time and fan stop time can be pre-stored in a preset mapping table. After obtaining the comparison result, the corresponding fan start time and fan stop time can be obtained by looking up the table.

[0064] Step S107: Turn the target fan on and off based on the start and stop times.

[0065] After obtaining the start and stop times, the target fan is controlled based on the start and stop times to achieve the alternating start and stop of the target fan when the target area reaches the required temperature. This prevents the target fan from being kept on continuously, which could cause the temperature of the target area to be too high or too low, and also reduces the energy consumption of the target fan.

[0066] In another embodiment of the technical solution disclosed in this application, in order to reduce the computational load of the air conditioning system, a basic fan start time T1 and a basic fan stop time T2 can be preset, and a correction time t can be set. After obtaining the comparison result, obtaining the fan start time and fan stop time corresponding to the comparison result can include:

[0067] Step S201: When the second temperature change rate is greater than the first temperature change rate, the fan start time T1': T1' = T1 + t, the fan stop time T2': T2' = T2 - t, where T1 is the first preset duration, T2 is the second preset duration, and t is the correction duration;

[0068] Step S202: When the second temperature change rate is less than the first temperature change rate, the fan start time T1”: T1” = T1-t, and the fan stop time T2”: T2” = T2+t.

[0069] In another embodiment of the technical solution disclosed in this application, in order to achieve precise constant temperature control of the target area, the correction duration t can be calculated. Specifically, in this solution, an appropriate correction duration t can be selected based on the difference between the second temperature change rate and the first temperature change rate. The larger the difference between the second temperature change rate and the first temperature change rate, the larger the value of the correction duration t will be. That is, t is proportional to the difference between the second temperature change rate and the first temperature change rate.

[0070] In another embodiment of the technical solution disclosed in this application, considering that the scene of the target area changes, the corresponding first temperature change rate and second temperature change rate will also change. For example, the temperature change rate of the target area after the user opens / closes the doors and windows will be different from the temperature change rate of the target area before the user opens / closes the doors and windows. Therefore, it is necessary to update the first temperature change rate and the second temperature change rate in real time. That is, in this solution, if the target fan is in the off state at the current moment, the first temperature change rate corresponding to the current moment is obtained by detecting the temperature change rate of the target area, and the air conditioner temperature change rate in the previous time period is obtained and used as the second temperature change rate. The previous time period refers to... When comparing the first temperature change rate and the second temperature change rate, the first temperature change rate corresponding to the current time period is compared with the second temperature change rate corresponding to the previous time period. If the target fan is currently on, the second temperature change rate corresponding to the current time period is obtained by detecting the temperature change rate of the target area. The air conditioning temperature change rate in the previous time period is obtained and used as the first temperature change rate. The previous time period refers to the time period when the target fan was last off. When comparing the first temperature change rate and the second temperature change rate, the second temperature change rate corresponding to the current time period is compared with the first temperature change rate corresponding to the previous time period.

[0071] The technical solution disclosed in this embodiment also discloses a multi-split air conditioning control device. For the specific working content of each unit in the device, please refer to the content of the above method embodiment. The multi-split air conditioning control device provided by the present invention will be described below. The multi-split air conditioning control device described below can be referred to in correspondence with the multi-split air conditioning control method described above.

[0072] See Figure 3 This application discloses a multi-split air conditioning control device, comprising:

[0073] Temperature acquisition unit A, which corresponds to step S101 in the above method, is used to acquire the temperature of the temperature control zone corresponding to N air conditioner indoor fans driven by the same outdoor unit. Different air conditioner indoor fans are used to adjust the temperature of different temperature control zones, and N is a positive integer not less than 2.

[0074] Temperature determination unit B, which corresponds to step S102 in the above method, is used to determine whether the ambient temperature of the temperature control area corresponding to the air conditioner fan has reached the set temperature, and the temperature control area that has reached the set temperature is recorded as the target area, and the air conditioner fan corresponding to the target area is recorded as the target fan.

[0075] The first rate of change acquisition unit C, which corresponds to step S103 in the above method, is used to acquire the rate of temperature change of the indoor space corresponding to the target area without turning on the air conditioner's internal fan, and is denoted as the first temperature change rate.

[0076] The second rate of change acquisition unit D, which corresponds to step S104 in the above method, is used to acquire the rate of temperature change of the target area when the target fan is turned on, and is denoted as the second temperature rate of change.

[0077] The rate of change comparison unit E, which corresponds to step S105 in the above method, is used to compare the magnitude of the second temperature change rate with the first temperature change rate.

[0078] The start-up and shutdown duration acquisition unit F corresponds to step S106 in the above method and is used to acquire the fan start-up time and fan shutdown time corresponding to the comparison result.

[0079] The fan control unit G, which corresponds to step S107 in the above method, is used to turn the target fan on and off based on the turn-on time and the turn-off time.

[0080] Corresponding to the above method, the start-up / shutdown duration acquisition unit, when acquiring the fan start-up time and fan shutdown time corresponding to the comparison result, is specifically used for:

[0081] When the second temperature change rate is greater than the first temperature change rate, the fan start time T1': T1' = T1 + t, the fan shutdown time T2': T2' = T2 - t, where T1 is the first preset duration, T2 is the second preset duration, and t is the correction duration;

[0082] When the second temperature change rate is less than the first temperature change rate, the fan start time T1”: T1” = T1-t, and the fan shutdown time T2”: T2” = T2+t.

[0083] Corresponding to the above method, the above apparatus may further include:

[0084] The correction duration calculation unit is used to calculate the correction duration t based on the difference between the second temperature change rate and the first temperature change rate, wherein t is proportional to the difference between the second temperature change rate and the first temperature change rate.

[0085] Corresponding to the above method, this application also discloses a multi-split air conditioning control device. Figure 4 For a hardware structure diagram of a multi-split air conditioning control device provided in an embodiment of the present invention, please refer to [reference needed]. Figure 4As shown, the device may include: at least one processor 100, at least one communication interface 200, at least one memory 300 and at least one communication bus 400;

[0086] In this embodiment of the invention, the number of processor 100, communication interface 200, memory 300, and communication bus 400 is at least one, and the processor 100, communication interface 200, and memory 300 communicate with each other through communication bus 400; obviously, Figure 4 The communication connections shown for the processor 100, communication interface 200, memory 300, and communication bus 400 are optional.

[0087] Optionally, the communication interface 200 can be an interface of a communication module, such as the interface of a GSM module;

[0088] Processor 100 may be a central processing unit (CPU), an application-specific integrated circuit (ASIC), or one or more integrated circuits configured to implement embodiments of the present invention.

[0089] The memory 300 may include high-speed RAM memory, and may also include non-volatile memory, such as at least one disk storage device.

[0090] Specifically, processor 100 is used for:

[0091] Get the temperature of the temperature control zone corresponding to N air conditioner indoor fans driven by the same outdoor unit. Different air conditioner indoor fans are used to adjust the temperature of different temperature control zones. N is a positive integer not less than 2.

[0092] Determine whether the ambient temperature of the temperature control area corresponding to the air conditioner's indoor fan has reached the set temperature, and record the temperature control area that has reached the set temperature as the target area, and record the air conditioner's indoor fan corresponding to the target area as the target fan;

[0093] The rate of temperature change of the indoor space corresponding to the target area is obtained without turning on the air conditioner's internal fan, and is denoted as the first temperature change rate.

[0094] The temperature change rate of the target area when the target fan is turned on is obtained and denoted as the second temperature change rate.

[0095] Compare the magnitudes of the second temperature change rate and the first temperature change rate;

[0096] Obtain and compare the corresponding fan start-up and fan shutdown times;

[0097] The target fan is turned on and off based on the stated on and off times.

[0098] In addition to the methods described above, the processor 100 is also used to perform the various steps described in other method embodiments, which will not be repeated here.

[0099] Corresponding to the above-mentioned device, this application also discloses an air conditioner, which is a multi-split air conditioner, and the controller of the multi-split air conditioner may include the above-mentioned multi-split air conditioner control device.

[0100] For ease of description, the above system is described by dividing it into various modules based on their functions. Of course, in implementing this invention, the functions of each module can be implemented in one or more software and / or hardware components.

[0101] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments. In particular, for system or system embodiments, since they are basically similar to method embodiments, the description is relatively simple, and relevant parts can be referred to the descriptions in the method embodiments. The systems and system embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without creative effort.

[0102] Those skilled in the art will further recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both. To clearly illustrate the interchangeability of hardware and software, the components and steps of the various examples have been generally described in terms of functionality in the foregoing description. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementations should not be considered beyond the scope of this invention.

[0103] The steps of the methods or algorithms described in conjunction with the embodiments disclosed herein can be implemented directly by hardware, a software module executed by a processor, or a combination of both. The software module can be located in random access memory (RAM), main memory, read-only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, removable disk, CD-ROM, or any other form of storage medium known in the art.

[0104] It should also be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0105] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for controlling multiple air conditioners in a single system, characterized in that, include: Get the temperature of the temperature control zone corresponding to N air conditioner indoor fans driven by the same outdoor unit. Different air conditioner indoor fans are used to adjust the temperature of different temperature control zones. N is a positive integer not less than 2. Determine whether the ambient temperature of the temperature control area corresponding to the air conditioner's indoor fan has reached the set temperature, and record the temperature control area that has reached the set temperature as the target area, and record the air conditioner's indoor fan corresponding to the target area as the target fan; The rate of temperature change of the indoor space corresponding to the target area is obtained without turning on the air conditioner's internal fan, and is denoted as the first temperature change rate. The temperature change rate of the target area when the target fan is turned on is obtained and denoted as the second temperature change rate. Compare the magnitudes of the second temperature change rate and the first temperature change rate; Obtain and compare the corresponding fan start-up and fan shutdown times; The target fan is turned on and off based on the start and stop times; The process of obtaining and comparing the wind turbine start-up and shut-down times corresponding to the results includes: When the second temperature change rate is greater than the first temperature change rate, the fan start time T1': T1' = T1 + t, the fan shutdown time T2': T2' = T2 - t, where T1 is the first preset duration, T2 is the second preset duration, and t is the correction duration; When the second temperature change rate is less than the first temperature change rate, the fan start time T1'': T1'' = T1 - t, and the fan shutdown time T2'': T2'' = T2 + t.

2. The multi-split air conditioning control method according to claim 1, characterized in that, The value of t is proportional to the difference between the second rate of temperature change and the first rate of temperature change.

3. The multi-split air conditioning control method according to claim 1, characterized in that, Different temperature control zones correspond to different set temperatures. Determining whether the ambient temperature of the temperature control zone corresponding to the air conditioner's internal fan has reached the set temperature includes: Determine whether the ambient temperature of the temperature control zone corresponding to the air conditioner's internal fan has reached the set temperature corresponding to the temperature control zone.

4. The multi-split air conditioning control method according to claim 1, characterized in that, The method includes: obtaining the rate of temperature change of the indoor space corresponding to the target area without turning on the air conditioner's indoor fan, denoted as the first temperature change rate; and obtaining the rate of temperature change of the target area with the target fan turned on, denoted as the second temperature change rate; including: If the target fan is currently off, the temperature change rate of the target area is detected to obtain the first temperature change rate corresponding to the current time. The temperature change rate of the target area in the previous time period is obtained and used as the second temperature change rate. The previous time period refers to the time period when the target fan was last turned on. If the target fan is currently on, the second temperature change rate corresponding to the current time is obtained by detecting the temperature change rate of the target area, and the temperature change rate of the indoor space corresponding to the target area in the previous time period is obtained and used as the first temperature change rate. The previous time period refers to the time period when the target fan was last turned off.

5. A multi-split air conditioning control device, characterized in that, include: The temperature acquisition unit is used to acquire the temperature of the temperature control zone corresponding to N air conditioner indoor fans driven by the same outdoor unit. Different air conditioner indoor fans are used to adjust the temperature of different temperature control zones, where N is a positive integer not less than 2. The temperature determination unit is used to determine whether the ambient temperature of the temperature control area corresponding to the air conditioner's indoor fan has reached the set temperature, and to record the temperature control area that has reached the set temperature as the target area, and to record the air conditioner's indoor fan corresponding to the target area as the target fan. The first rate of change acquisition unit is used to acquire the rate of temperature change of the indoor space corresponding to the target area without turning on the air conditioner's internal fan, and is denoted as the first temperature rate of change. The second rate of change acquisition unit is used to acquire the temperature change rate of the target area when the target fan is turned on, and is denoted as the second temperature change rate. A rate of change comparison unit is used to compare the magnitude of the second temperature change rate with the first temperature change rate; The start-up and shutdown duration acquisition unit is used to acquire the fan start-up time and fan shutdown time corresponding to the comparison results; A fan control unit is used to turn the target fan on and off based on the start-up and stop-down times; The power on / off duration acquisition unit, when acquiring the fan start-up time and fan off time corresponding to the comparison result, is specifically used for: When the second temperature change rate is greater than the first temperature change rate, the fan start time T1': T1' = T1 + t, the fan shutdown time T2': T2' = T2 - t, where T1 is the first preset duration, T2 is the second preset duration, and t is the correction duration; When the second temperature change rate is less than the first temperature change rate, the fan start time T1'': T1'' = T1 - t, and the fan shutdown time T2'': T2'' = T2 + t.

6. The multi-split air conditioning control device according to claim 5, characterized in that, Also includes: The correction duration calculation unit is used to calculate the correction duration t based on the difference between the second temperature change rate and the first temperature change rate, wherein t is proportional to the difference between the second temperature change rate and the first temperature change rate.

7. A multi-split air conditioning control device, characterized in that, include: Memory and processor; The memory is used to store programs; The processor is used to execute the program to implement the various steps of the multi-split air conditioning control method as described in any one of claims 1-4.

8. An air conditioner, characterized in that, Includes the multi-split air conditioning control device as described in claim 7.

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