Control method and device of air conditioner, air conditioner and storage medium

Abstract

The present disclosure provides a control method and device of an air conditioner, the air conditioner and a storage medium. The control method comprises the following steps: receiving a defrosting request sent by an air conditioner to be defrosted in a multi-split air conditioner; obtaining a frosting degree and a request duration of the air conditioner to be defrosted in the defrosting request; determining a frosting severity level of the air conditioner to be defrosted according to the frosting degree and the request duration; determining a target defrosting air conditioner according to the frosting severity level of each air conditioner to be defrosted in the multi-split air conditioner; and controlling the target defrosting air conditioner to perform a defrosting operation. The present disclosure can reduce the indoor temperature fluctuation when the multi-split air conditioner defrosts, and improve the operation effect of the air conditioner.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of air conditioner control, in particular to an air conditioner control method and device, an air conditioner and a storage medium. BACKGROUND

[0002] A multi-split heat pump air conditioner is a new type of air conditioning system with the characteristics of a centralized air conditioning system. The multi-split heat pump air conditioner can be composed of multiple air conditioners to form an air conditioning unit. In some modes or environments, the air conditioner may be in a frosting state, which affects the normal operation of the air conditioner. For example, in the heating mode, the outdoor unit of the air conditioner is prone to frosting.

[0003] In related technologies, each air conditioner of the multi-split air conditioner generally performs defrosting operation independently, but in severe working conditions, each air conditioner is more likely to enter collective defrosting. During the defrosting process, the heating capacity decreases, the indoor temperature fluctuates greatly, and the user's feeling is obvious, which leads to poor operation effect of the air conditioner. SUMMARY

[0004] Embodiments of the present disclosure provide an air conditioner control method and device, an air conditioner and a storage medium, which aims to effectively improve the operation effect of the air conditioner.

[0005] In a first aspect, an air conditioner control method is provided, which comprises:

[0006] receiving a defrosting request sent by a to-be-defrosted air conditioner in a multi-split air conditioner, and obtaining a frosting degree and a request duration of the to-be-defrosted air conditioner in the defrosting request;

[0007] determining a frosting severity level of the to-be-defrosted air conditioner according to the frosting degree and the request duration;

[0008] determining a target defrosting air conditioner according to the frosting severity levels of the to-be-defrosted air conditioners in the multi-split air conditioner, and controlling the target defrosting air conditioner to perform defrosting operation.

[0009] Optionally, after determining the frosting severity level of the to-be-defrosted air conditioner according to the frosting degree and the request duration, the method further comprises:

[0010] comparing the frosting severity level with a preset frosting severity level;

[0011] if the frosting severity level is greater than or equal to the preset frosting severity level, controlling the to-be-defrosted air conditioner to perform defrosting operation;

[0012] if the frosting severity level is less than the preset frosting severity level, determining a target defrosting air conditioner according to the frosting severity levels of the to-be-defrosted air conditioners in the multi-split air conditioner, and controlling the target defrosting air conditioner to perform defrosting operation.

[0013] Optionally, the method further comprises:

[0014] determining at least two target defrosting air conditioners according to the frosting severity levels of the air conditioners in the multi-split air conditioner system, and a defrosting priority of the target defrosting air conditioners;

[0015] controlling the target defrosting air conditioners to perform defrosting operation according to the defrosting priority.

[0016] Optionally, the method further comprises:

[0017] acquiring a determination time at which the frosting severity level of each of the air conditioners is determined;

[0018] updating the frosting severity level of each of the air conditioners according to an update duration between the determination time and a current time.

[0019] Optionally, the method further comprises:

[0020] acquiring an operating environment parameter of each of the air conditioners;

[0021] predicting a predicted frosting degree of each of the air conditioners according to the update duration corresponding to each of the air conditioners and the operating environment parameter of each of the air conditioners;

[0022] updating the frosting severity level of each of the air conditioners according to the predicted frosting degree corresponding to each of the air conditioners and the update duration.

[0023] Optionally, the method further comprises:

[0024] acquiring a current operating frequency of the air conditioner;

[0025] if the current operating frequency is greater than a defrosting operating frequency, controlling the air conditioner to operate at the defrosting operating frequency.

[0026] Optionally, the method further comprises:

[0027] if an operating environment of the air conditioner satisfies a preset exit condition, ignoring the air conditioner;

[0028] wherein the preset exit condition comprises at least one of the following:

[0029] The outdoor environment temperature of the air conditioner to be defrosted is greater than a preset outdoor environment temperature, and the duration is greater than a preset duration;

[0030] The outdoor coil temperature of the air conditioner to be defrosted is greater than a preset outdoor coil temperature, and the duration is greater than a preset duration;

[0031] The compressor discharge temperature of the air conditioner to be defrosted is greater than a preset outdoor environment temperature, and the duration is greater than a preset duration.

[0032] In a second aspect, the embodiments of the present disclosure provide a control device of an air conditioner, which comprises:

[0033] The receiving module is configured to receive a defrosting request sent by an air conditioner to be defrosted in a multi-split air conditioner, and obtain a frosting degree and a request duration of the air conditioner to be defrosted in the defrosting request.

[0034] The determining module is configured to determine a frosting severity level of the air conditioner to be defrosted according to the frosting degree and the request duration.

[0035] The control module is configured to determine a target air conditioner to be defrosted according to the frosting severity levels of the air conditioners to be defrosted in the multi-split air conditioner, and control the target air conditioner to perform a defrosting operation.

[0036] In a third aspect, the embodiments of the present disclosure also provide an air conditioner, which comprises a memory storing a plurality of instructions, and a processor loading the instructions from the memory to execute the steps of any of the control methods of the air conditioner provided by the embodiments of the present disclosure.

[0037] In a fourth aspect, the embodiments of the present disclosure also provide a computer-readable storage medium storing a plurality of instructions, and the instructions are adapted to be loaded by a processor to execute the steps of any of the control methods of the air conditioner provided by the embodiments of the present disclosure.

[0038] The embodiments of the present disclosure receive a defrosting request sent by an air conditioner to be defrosted in a multi-split air conditioner, and obtain a frosting degree and a request duration of the air conditioner to be defrosted in the defrosting request. The frosting severity level of the air conditioner to be defrosted is determined according to the frosting degree and the request duration. A target air conditioner to be defrosted is determined according to the frosting severity levels of the air conditioners to be defrosted in the multi-split air conditioner, and the target air conditioner to be defrosted is controlled to perform a defrosting operation. The frosting severity level of the air conditioner to be defrosted is determined according to the frosting degree and the request duration of the air conditioner to be defrosted in the multi-split air conditioner, which is used to represent the urgency of the air conditioner to be defrosted. The target air conditioner to be defrosted is selected from the air conditioners to be defrosted according to the frosting severity level to perform the defrosting operation, so that the air conditioners to be defrosted can be defrosted in turn, to avoid that the air conditioners in the multi-split air conditioner collectively defrost in a severe state to cause a large indoor temperature fluctuation, and to improve the refrigeration effect of the air conditioner. BRIEF DESCRIPTION OF DRAWINGS

[0039] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following will briefly introduce the drawings needed to be used in the embodiments description. Obviously, the drawings in the following description only constitute some embodiments of the present disclosure, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0040] Figure 1 is a flow diagram of one embodiment of the control method of the air conditioner provided in the embodiments of the present disclosure;

[0041] Figure 2 is a flow diagram of another embodiment of the control method of the air conditioner provided in the embodiments of the present disclosure;

[0042] Figure 3 is a structural diagram of the control device of the air conditioner provided in the embodiments of the present disclosure;

[0043] Figure 4 is a structural diagram of the air conditioner provided in the embodiments of the present disclosure. DETAILED DESCRIPTION

[0044] The technical solutions in the embodiments of the present disclosure will be described clearly and completely in the following with reference to the drawings in the embodiments of the present disclosure. Obviously, the described embodiments only constitute some embodiments of the present disclosure, rather than all the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present disclosure. Meanwhile, in the description of the embodiments of the present disclosure, the terms “first”, “second”, etc. are only used for distinguishing description, and cannot be understood as indicating or implying relative importance. Therefore, the features with “first”, “second” can explicitly or implicitly include one or more features. In the description of the embodiments of the present disclosure, the meaning of “multiple” is two or more, unless otherwise specifically limited.

[0045] The embodiments of the present disclosure provide a control method and device of an air conditioner, an air conditioner and a computer readable storage medium.

[0046] Specifically, the embodiments will be described from the perspective of the control device of the air conditioner, which can be integrated in the air conditioner, i.e. the control method of the air conditioner in the embodiments of the present disclosure can be executed by the air conditioner.

[0047] The following will be described in detail with reference to the drawings, and the execution subject in the embodiments is taken as an example of the air conditioner. It should be noted that the description order of the following embodiments is not limited as the preferred order of the embodiments. Although the logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in different order from that shown in the drawings.

[0048] According to the background description of the present disclosure, each air conditioner of the multi-split air conditioner generally performs defrosting operation independently, but in severe working conditions, each air conditioner is more likely to enter collective defrosting, and the heating capacity decreases during the defrosting process, the indoor temperature fluctuates greatly, the user's feeling is obvious, and the running effect of the air conditioner is poor.

[0049] To solve the above problems, the present disclosure provides a control method of an air conditioner, please refer to Figure 1 The specific process of the control method of the air conditioner can be as follows: steps S10-S30, wherein:

[0050] Step S10, receiving a defrosting request sent by a to-be-defrosted air conditioner in a multi-split air conditioner, and obtaining the frost degree and request duration of the to-be-defrosted air conditioner in the defrosting request;

[0051] In this embodiment, the multi-split air conditioner includes multiple air conditioners, which can be air conditioner outdoor units. The multiple air conditioners can be connected in series or in parallel, or can be used to adjust the temperature of different rooms or space areas in the same range. It should be noted that the air conditioners in the multi-split air conditioner do not require a physical connection relationship. For example, air conditioners installed in different rooms can be connected through application software binding, and each air conditioner can be controlled separately through the control device of the air conditioner.

[0052] The control method of the air conditioner provided in this embodiment can be applied to the control device of the air conditioner. The control device of the air conditioner can be arranged in any air conditioner of the multi-split air conditioner. One air conditioner can be selected as the master from the multiple air conditioners of the multi-split air conditioner, and the other air conditioners can be selected as the slave. The defrosting operation of the master and the slave can be controlled.

[0053] Alternatively, a code switch can be used to distinguish whether the air conditioner is a master or a slave in the multi-split air conditioner. The specific implementation is as follows: the code switch is a 4-bit switch defined as SW1, SW2, SW3, and SW4, and the switch state can be defined as 0000, 0001, 0010, …, and 1111. When the code switch state is the preset switch state 0000, the air conditioner is the master, and the air conditioners in the remaining states are slaves. The code switch state can be defined during debugging. The 4-bit code switch can define up to 16 air conditioner switch states. The number of code switches is not limited here.

[0054] Alternatively, the control device of the air conditioner can be arranged outside the air conditioner of the multi-split air conditioner, such as a wire control device, a mobile phone, a tablet computer, a computer, a smart home management module, etc.

[0055] Air conditioner may occur frosting phenomenon in some operation modes, for example, in heating mode, the outdoor temperature is low, the heat exchanger of the outdoor unit of the air conditioner may occur frosting, when the air conditioner occurs frosting, it will affect the normal operation of the air conditioner, resulting in air conditioner failure and other conditions, so the air conditioner can perform defrosting operation to alleviate or change the frosting phenomenon of the air conditioner. However, the defrosting operation will affect the running effect of the air conditioner in normal mode, for example, in the heating mode of the air conditioner, the outdoor unit of the air conditioner occurs frosting, in order to defrost, the air conditioner will perform refrigeration, when refrigerating, the outdoor unit will heat after heat exchange to realize defrosting, but the indoor unit will cause the indoor temperature to drop due to refrigeration, so the running effect of the air conditioner in the normal heating mode will be affected. When multiple air conditioners run collectively, if multiple air conditioners collectively perform defrosting, it will cause the running effect of the air conditioner in the normal running mode to be poor, so the control device of the air conditioner needs to be overall planned.

[0056] Optionally, the air conditioner in the multi-split air conditioner can detect the current running environment through its own detection device, obtain running environment parameters including outdoor environment temperature, outdoor coil temperature, compressor discharge temperature, etc., judge whether the air conditioner occurs frosting, whether it needs to perform defrosting operation, if it needs to perform defrosting operation, send a defrosting request to the control device of the air conditioner, the defrosting request can include frosting degree, request defrosting waiting time, current defrosting state and other information. The frosting degree is used to indicate the severity of the frosting of the corresponding air conditioner, the more serious the frosting, the higher the frosting degree, the more immediate defrosting is needed, and vice versa. The request time is the waiting time for the air conditioner to request defrosting, on the one hand, the longer the request time, the longer the air conditioner frosting time, the more immediate defrosting is needed, on the other hand, the longer the request time, and the air conditioner frosting may become more serious within this time, which also needs immediate defrosting.

[0057] After receiving the defrosting request sent by the air conditioner to be defrosted, the frosting degree and the request time of the air conditioner to be defrosted can be determined from the defrosting request, and multiple air conditioners to be defrosted may appear in the multi-split air conditioner, but the target defrosting air conditioner needs to be selected from these air conditioners to be defrosted to perform defrosting operation, so as to balance the defrosting effect and the running effect.

[0058] Step S20, determining the frosting severity level of the air conditioner to be defrosted according to the frosting degree and the request time;

[0059] In this embodiment, the frosting severity level is introduced to represent the urgency of the air conditioner to be defrosted, which needs to be determined by the frosting degree and the request time.

[0060] Optionally, the frosting degree and the request duration can be weighted and calculated based on preset weight values to obtain a frosting severity level, and the specific formula is as follows:

[0061] Y=G*a1+T*a2

[0062] wherein a1 is a preset weight value corresponding to the frosting degree, a2 is a preset weight value corresponding to the request duration, G is the frosting degree, T is the request duration, and Y is the frosting severity level.

[0063] In step S30, a target defrosting air conditioner is determined according to the frosting severity levels of the air conditioners to be defrosted in the multi-split air conditioner, and the target defrosting air conditioner is controlled to perform a defrosting operation.

[0064] In this embodiment, the frosting severity level is determined by comprehensively considering the frosting degree and the request duration to represent the urgency of the air conditioner to be defrosted to perform a defrosting operation immediately. The greater the frosting severity level, the more urgent the air conditioner needs to perform a defrosting operation immediately. The frosting severity levels of the air conditioners to be defrosted in the multi-split air conditioner are compared, and one or more target defrosting air conditioners are selected from the air conditioners to be defrosted according to the comparison result. The frosting severity level of the target defrosting air conditioner is greater than that of the other air conditioners to be defrosted, and the target defrosting air conditioner is controlled to perform a defrosting operation.

[0065] Optionally, the target defrosting air conditioner can be part of the air conditioners to be defrosted or all of the air conditioners to be defrosted. The preset number of air conditioners to be defrosted that can perform a defrosting operation simultaneously is obtained, and the number of air conditioners to be defrosted in the multi-split air conditioner is obtained. If the number of air conditioners to be defrosted in the multi-split air conditioner is greater than the preset number, the target defrosting air conditioners are determined from the air conditioners to be defrosted in the multi-split air conditioner, and the preset number of air conditioners to be defrosted is used as the target defrosting air conditioners. If the number of air conditioners to be defrosted in the multi-split air conditioner is less than the preset number, all of the air conditioners to be defrosted in the multi-split air conditioner are used as the target defrosting air conditioners.

[0066] For example, one air conditioner in a multi-split air conditioner is allowed to perform a defrosting operation, and the air conditioner to be defrosted with the greatest frosting severity level is selected as the target defrosting air conditioner from the air conditioners to be defrosted in the multi-split air conditioner. Two air conditioners are allowed to perform a defrosting operation simultaneously, and if the number of air conditioners to be defrosted in the multi-split air conditioner is two, all of the air conditioners to be defrosted can be selected to perform a defrosting operation.

[0067] It should be noted that the step of determining the target defrosting air conditioner does not necessarily need to be performed immediately after determining the frosting severity level of the air conditioner to be defrosted. Instead, a certain triggering condition can be set, for example, whether the air conditioner in the multi-split air conditioner has a defrosting request within a preset time period. If so, the defrosting request of the air conditioner to be defrosted is received, and the corresponding air conditioner to be defrosted and the frosting severity level corresponding to the air conditioner to be defrosted are determined. According to the frosting severity levels of the air conditioners to be defrosted corresponding to the defrosting requests received within the preset time, the target defrosting air conditioner is determined, and the target defrosting air conditioner is controlled to perform the defrosting operation. After the defrosting operation is completed, the defrosting request sent by the air conditioner to be defrosted is received again after a preset time interval, so as to perform a new round of defrosting operation, thereby realizing time-sharing defrosting, so that the air conditioners needing defrosting can be defrosted in order according to the frosting severity levels.

[0068] Optionally, the air conditioner can poll whether the air conditioner in the multi-split air conditioner has a defrosting request, if so, the defrosting request of the air conditioner to be defrosted is received, and the frosting severity level of the air conditioner to be defrosted is determined according to the frosting degree and the request duration of the air conditioner to be defrosted in the defrosting request. After polling the air conditioners in the multi-split air conditioner in turn, the target defrosting air conditioner is determined from the frosting severity levels of the air conditioners to be defrosted detected in the polling stage, and the target defrosting air conditioner is controlled to perform the defrosting operation. After the defrosting operation is completed, the air conditioners in the multi-split air conditioner are polled again in reverse order of the polling order to perform a new round of defrosting operation, thereby realizing time-sharing defrosting, so that the air conditioners needing defrosting can be defrosted in order according to the frosting severity levels.

[0069] In the technical solutions disclosed in the embodiments, the defrosting request sent by the air conditioner to be defrosted in the multi-split air conditioner is received, and the frosting degree and the request duration of the air conditioner to be defrosted in the defrosting request are obtained. According to the frosting degree and the request duration, the frosting severity level of the air conditioner to be defrosted is determined. According to the frosting severity levels of the air conditioners to be defrosted in the multi-split air conditioner, the target defrosting air conditioner is determined, and the target defrosting air conditioner is controlled to perform the defrosting operation. The frosting severity level of the air conditioner to be defrosted in the multi-split air conditioner is determined by comprehensively judging the frosting degree and the request duration, so as to represent the urgency of the air conditioner to be defrosted to perform defrosting immediately, thereby selecting the target defrosting air conditioner to perform defrosting. Through the unified defrosting manner, the situation that most of the air conditioners in the multi-split air conditioner enter collective defrosting and cause large indoor temperature fluctuation due to independent defrosting of the air conditioners is avoided, and the operation effect of the air conditioner is improved.

[0070] In an embodiment, after step S30, the method further comprises:

[0071] comparing the frosting severity level with a preset frosting severity level;

[0072] If the frosting severity level is greater than or equal to the preset frosting severity level, the air conditioner to be defrosted is controlled to perform defrosting operation.

[0073] If the frosting severity level is less than the preset frosting severity level, a target air conditioner is determined according to the frosting severity level of each air conditioner to be defrosted in the multi-split air conditioner, and the target air conditioner is controlled to perform defrosting operation.

[0074] In the embodiment, the frosting severity level is determined for one air conditioner to be defrosted. When the frosting degree is very serious or the request duration is very long, the determined frosting severity level is very high, and the urgency of the air conditioner to be defrosted to perform defrosting is very strong. If defrosting cannot be performed immediately, the normal operation of the air conditioner to be defrosted will be seriously affected. Therefore, the preset frosting severity level can be set as a frosting severity level threshold for immediately performing defrosting operation.

[0075] If the frosting severity level of the air conditioner to be defrosted is greater than or equal to the preset frosting severity level, the air conditioner to be defrosted needs to perform defrosting immediately to avoid seriously affecting the normal operation of the air conditioner to be defrosted. A control instruction for allowing defrosting can be sent to the air conditioner to be defrosted to control the air conditioner to be defrosted to perform defrosting operation.

[0076] If the frosting severity level of the air conditioner to be defrosted is less than the preset frosting severity level, the air conditioner to be defrosted can be selected as a candidate and needs to perform step S30 to compare the frosting severity level of the air conditioner to be defrosted with the frosting severity level of other air conditioners to be defrosted in the multi-split air conditioner to determine whether the air conditioner to be defrosted can be a target air conditioner to perform defrosting operation.

[0077] In this way, the preset frosting severity level is set to avoid the case that the normal operation of the air conditioner to be defrosted is seriously affected when the frosting severity level is very high, thereby improving the stability of the multi-split air conditioner and improving the operation effect of the multi-split air conditioner.

[0078] Further, step S30 comprises:

[0079] determining at least two target air conditioners according to the frosting severity level of each air conditioner to be defrosted in the multi-split air conditioner, and a defrosting priority of the target air conditioners;

[0080] controlling the target air conditioners to perform defrosting operation according to the defrosting priority.

[0081] In the embodiment, at least two target defrosting air conditioners can be determined according to the frosting severity levels of the air conditioners in the multi-split air conditioner, and the priority of the target defrosting air conditioners can be determined according to the frosting severity levels of the target defrosting air conditioners. The higher the frosting severity level, the higher the priority of the target defrosting air conditioner. The higher the priority, the earlier the defrosting operation needs to be performed. Therefore, the target defrosting air conditioners are controlled to perform the defrosting operation in sequence according to the defrosting priority. After the target defrosting air conditioner with the current priority performs the defrosting operation, the target defrosting air conditioner with the next priority performs the defrosting operation.

[0082] For example, in the multi-split air conditioner, there are four air conditioners A, C, D and F to be defrosted. According to the frosting severity levels of the four air conditioners, A, C, D and F are determined as target defrosting air conditioners. According to the frosting severity levels of A, C, D and F, the priority is determined as F>A>D>C. Then, the defrosting operation is performed in the order of F, A, D and C.

[0083] In this way, when multiple target defrosting air conditioners are determined, the target defrosting air conditioners can be controlled to perform the defrosting operation according to the frosting severity levels of the target defrosting air conditioners, and the time-sharing defrosting is further realized, and the operation effect of the multi-split air conditioner during defrosting is improved.

[0084] In an embodiment, after receiving the defrosting request sent by the air conditioner to be defrosted in the multi-split air conditioner, the method further includes:

[0085] If it is monitored that the operating environment of the air conditioner to be defrosted meets the preset exit condition, the air conditioner to be defrosted is ignored.

[0086] The preset exit condition includes at least one of the following:

[0087] The outdoor environment temperature of the air conditioner to be defrosted is greater than a preset outdoor environment temperature, and the duration is greater than a preset duration.

[0088] The outdoor coil temperature of the air conditioner to be defrosted is greater than a preset outdoor coil temperature, and the duration is greater than a preset duration.

[0089] The compressor discharge temperature of the air conditioner to be defrosted is greater than a preset outdoor environment temperature, and the duration is greater than a preset duration.

[0090] In this embodiment, the air conditioner is determined as the target defrosting air conditioner because the defrosting request exists, the defrosting request is sent to the control device of the air conditioner, and the control device of the air conditioner determines that the air conditioner is the air conditioner to be defrosted. There is a certain time interval between determining the target defrosting air conditioner and receiving the defrosting request sent by the air conditioner to be defrosted. During this period, the air conditioner to be defrosted may not need to be defrosted due to external environmental changes, false sending of the defrosting request, and other factors. Therefore, after receiving the defrosting request of the air conditioner to be defrosted, it is monitored whether the operating environment of the air conditioner to be defrosted meets the preset exit condition. If yes, the air conditioner to be defrosted needs to be ignored, and is not selected as the target defrosting air conditioner, that is, the frosting severity level of the air conditioner to be defrosted is not determined.

[0091] Optionally, the way of monitoring whether the operating environment of the air conditioner to be defrosted meets the preset exit condition is not limited: a detection device can be arranged on the control device of the air conditioner, and the operating environment of the air conditioner to be defrosted can be directly detected through the detection device on the control device of the air conditioner, so as to monitor the operating environment of the air conditioner to be defrosted; a detection device can be arranged on the air conditioner to be defrosted, and the operating environment of the air conditioner to be defrosted can be directly detected through the detection device on the air conditioner to be defrosted, and the corresponding parameters are sent to the control device of the air conditioner, so that the control device of the air conditioner can monitor the air conditioner to be defrosted according to the parameters of the operating environment, or the air conditioner to be defrosted determines whether the operating environment meets the preset exit condition according to the parameters of the operating environment detected by itself. If yes, a notification of exiting the defrosting state is sent to the control device of the air conditioner, the control device of the air conditioner monitors the notification of exiting the defrosting state, and when the notification of exiting the defrosting state is monitored, it is determined that the operating environment of the air conditioner to be defrosted meets the preset exit condition.

[0092] In this embodiment, the preset exit condition of the air conditioner to be defrosted for exiting the defrosting state can include at least one of the following:

[0093] The outdoor environment temperature of the air conditioner to be defrosted is greater than a preset outdoor environment temperature, and the duration is greater than a preset duration;

[0094] The outdoor coil temperature of the air conditioner to be defrosted is greater than a preset outdoor coil temperature, and the duration is greater than a preset duration;

[0095] The compressor discharge temperature of the air conditioner to be defrosted is greater than a preset outdoor environment temperature, and the duration is greater than a preset duration.

[0096] When the above at least one condition is met, it indicates that the current frosting degree of the air conditioner to be defrosted is lighter, and the defrosting operation does not need to be performed.

[0097] Thus, after receiving the defrosting request, by monitoring the air conditioners to be defrosted, the air conditioners to be defrosted which do not need to perform defrosting operation are excluded in time, so that the target air conditioner to be defrosted can be determined more quickly and accurately, and the defrosting effect and operation effect of the multi-split air conditioner are improved.

[0098] Optionally, referring to Figure 2 , based on any of the above embodiments, in another embodiment of the control method of the air conditioner, before determining the target air conditioner to be defrosted according to the frosting severity level of each air conditioner to be defrosted in the multi-split air conditioner and controlling the target air conditioner to perform defrosting operation, the method further comprises:

[0099] In step S40, the determination time of the frosting severity level of each air conditioner to be defrosted is obtained.

[0100] In this embodiment, there is a certain time interval between determining the target air conditioner to be defrosted and receiving the defrosting request sent by the air conditioner to be defrosted. Due to the existence of this time, there is an error between the request time length used for determining the frosting severity level and the actual request time length of the air conditioner to be defrosted when determining the target air conditioner to be defrosted. If the frosting severity level of one air conditioner is greater than or equal to the preset frosting severity level during this period, and the air conditioner to be defrosted is preferentially controlled to perform defrosting operation, the error will become larger, and the frosting severity level error of the air conditioner to be defrosted determined later will not be too large, thereby affecting the accuracy of the target air conditioner to be defrosted determined. Therefore, before determining the target air conditioner to be defrosted, the determination time of the frosting severity level of each air conditioner to be defrosted is obtained to correct the time error.

[0101] In step S50, the frosting severity level of each air conditioner to be defrosted is updated according to the update time length between the determination time and the current time.

[0102] In this embodiment, the frosting severity level of the air conditioner to be defrosted is updated according to the update time length between the frosting time and the current time, i.e. the time difference between the determination time and the current time, so that the request time length used for determining the frosting severity level of the target air conditioner to be defrosted is accurate.

[0103] In the technical solution disclosed in this embodiment, the update time length between the determination time of the frosting severity level and the current time is determined, and the frosting severity level used for determining the target air conditioner to be defrosted is updated, so that the accuracy of determining the target air conditioner to be defrosted is improved, and the defrosting effect and operation effect are improved.

[0104] In one embodiment, step S50 further comprises:

[0105] The operating environment parameters of each air conditioner to be defrosted are obtained.

[0106] According to the update time length corresponding to each of the air conditioners to be defrosted and the operation environment parameter, a predicted frosting degree corresponding to each of the air conditioners to be defrosted is predicted;

[0107] According to the update time length corresponding to each of the air conditioners to be defrosted and the operation environment parameter, a predicted frosting degree corresponding to each of the air conditioners to be defrosted is predicted;

[0108] In the embodiment, it is determined that the target defrosting air conditioner and a certain time interval between receiving the defrosting request sent by the air conditioner to be defrosted. It is generally believed that the frosting degree of the air conditioner to be defrosted does not change too much during this period, but the change of the frosting degree cannot be ruled out. Thus, the operation environment parameter of each air conditioner to be defrosted can be further obtained, including indoor environment parameter, outdoor environment parameter, air conditioner operation parameter and other information. The frosting of the air conditioner is affected by these information, and the frosting degree is aggravated or reduced. According to the operation environment parameter and the update time length corresponding to the air conditioner to be defrosted, the predicted frosting degree corresponding to each air conditioner to be defrosted is predicted. Then, according to the predicted frosting degree corresponding to the air conditioner to be defrosted and the update time length, the frosting severity level of each air conditioner to be defrosted is updated.

[0109] In the technical solution disclosed in the embodiment, the update time length between the determination time of the frosting severity level and the current time, and the predicted frosting degree of the air conditioner to be defrosted when the target defrosting air conditioner is determined, are used to update the frosting severity level for determining the target defrosting air conditioner, so that the accuracy of determining the target defrosting air conditioner is improved, and the defrosting effect and the operation effect are improved.

[0110] In an embodiment, after receiving the defrosting request sent by the air conditioner to be defrosted in the multi-connected air conditioner, the method further comprises:

[0111] The current operation frequency of the air conditioner to be defrosted is obtained.

[0112] If the current operation frequency is greater than the defrosting operation frequency, the air conditioner to be defrosted is controlled to operate at the defrosting operation frequency.

[0113] In the embodiment, the change of the frosting degree of the air conditioner to be defrosted in the above time interval can also be reduced by other ways. That is, after receiving the defrosting request sent by the air conditioner to be defrosted in the multi-connected air conditioner, the current operation frequency of the air conditioner to be defrosted is obtained. If the current operation frequency is greater than the defrosting operation frequency, the air conditioner to be defrosted is controlled to operate at the defrosting operation frequency. If the current operation frequency is less than the defrosting operation frequency, the air conditioner to be defrosted is controlled to continue operating at the current operation frequency. Thus, the air conditioner to be defrosted can operate at a low frequency lower than or equal to the defrosting operation frequency in the defrosting state, so that the frosting degree of the air conditioner to be defrosted is relieved or reduced, and the change of the frosting degree in the above time interval is not large.

[0114] In this way, the frosting degree of the target frosting air conditioner will not change too much by reducing the running frequency of the frosting air conditioner, so that the accuracy of determining the frosting severity level of the target frosting air conditioner is higher, and the accuracy of determining the target frosting air conditioner is also higher, thereby improving the defrosting effect and the running effect. In addition, reducing the running frequency of the frosting air conditioner can also alleviate or reduce the frosting degree of the frosting air conditioner, so that even if the error caused by the time interval is not considered, reducing the running frequency of the frosting air conditioner can still improve the running effect of the air conditioner and ensure normal operation of the air conditioner.

[0115] In an alternative, the control device of the air conditioner polls the air conditioners in the multi-split air conditioner to check whether each air conditioner in the multi-split air conditioner needs to send a defrost request to itself, and if so, it is regarded as a frosting air conditioner and receives the defrost request sent by the frosting air conditioner, and then determines the frosting severity level of the frosting air conditioner according to the frosting degree of the frosting air conditioner and the request time length of the request for defrosting in the defrost request. If the frosting severity level of the frosting air conditioner is greater than or equal to the preset frosting severity level, the frosting air conditioner is immediately controlled to perform a defrosting operation. After the defrosting operation is completed, the air conditioners in the multi-split air conditioner are polled again, and the defrost request sent by the frosting air conditioner in the air conditioner is received. In this way, the accuracy of the previously determined frosting severity level will not be reduced due to the frosting severity level of a certain air conditioner being greater than or equal to the preset frosting severity level and performing a defrosting operation, and after polling again, the frosting severity levels of the frosting air conditioners will be more accurate, thereby improving the accuracy of determining the target frosting air conditioner and improving the defrosting effect and the running effect.

[0116] In order to better understand, a specific embodiment is provided as follows:

[0117] The multi-connected air conditioner includes one master air conditioner and one or more slave air conditioners. The master air conditioner and the slave air conditioners can be the same type of machine, and can be distinguished by a code switch. Each air conditioner monitors whether it meets preset defrosting conditions in real time. If the air conditioner meets the preset defrosting conditions, the air conditioner enters a defrosting standby state and outputs a defrosting request. The defrosting request includes a defrosting request flag (indicating that the request is a defrosting request), a frost degree (such as normal frost, severe frost, or thick frost), a request time length, and a current defrosting state (whether the air conditioner is currently defrosting). If no air conditioner is currently defrosting, the master air conditioner starts to cyclically detect the master air conditioner, the slave air conditioner 1, the slave air conditioner 2, and the slave air conditioner n in sequence by scanning and polling, to check whether the air conditioners output the defrosting request. Then, the master air conditioner receives the defrosting request of the air conditioner in the defrosting standby state, and determines a frost severity level according to the frost degree and the request time length in the defrosting request. During the polling, if the frost severity level of the slave air conditioner 1 is greater than or equal to a preset frost severity level, the scanning is stopped, and a defrosting permission instruction is sent to the slave air conditioner 1. The slave air conditioner 1 starts to perform a defrosting operation after receiving the defrosting permission instruction, and eliminates the defrosting request flag and no longer outputs the defrosting request after the defrosting operation is completed. If the defrosting request of the slave air conditioner 1 cannot be detected, it is considered that the slave air conditioner 1 has no defrosting demand, and the master air conditioner starts to poll the air conditioners in the multi-connected air conditioner again, taking the slave air conditioner 1 as a starting point. In this way, the frost severity level of the master air conditioner is recalculated, and the accuracy is higher. According to the frost severity levels of the slave air conditioners 3, 4, and 5 in the multi-connected air conditioner, the target defrosting air conditioner 3 is determined, and the slave air conditioner 3 is controlled to perform the defrosting operation. After the defrosting operation is completed, the air conditioners in the multi-connected air conditioner are polled again in the reverse order of the master air conditioner, the slave air conditioner n, the slave air conditioner 3, the slave air conditioner 2, and the slave air conditioner 1. The polling is repeated in this way.

[0118] The embodiment also provides a control device of an air conditioner. The control device of the air conditioner can be integrated in the air conditioner. For example, as shown in Figure 3 the control device of the air conditioner can include:

[0119] The receiving module 101 is configured to receive a defrosting request sent by a defrosting standby air conditioner in a multi-connected air conditioner, and obtain a frost degree and a request time length of the defrosting standby air conditioner in the defrosting request.

[0120] The determining module 102 is configured to determine a frost severity level of the defrosting standby air conditioner according to the frost degree and the request time length.

[0121] The control module 103 is configured to determine a target defrosting air conditioner according to the frost severity levels of the defrosting standby air conditioners in the multi-connected air conditioner, and control the target defrosting air conditioner to perform a defrosting operation.

[0122] Optionally, the control module 103 is further configured to:

[0123] compare the frosting severity level with a preset frosting severity level;

[0124] if the frosting severity level is greater than or equal to the preset frosting severity level, control the to-be-defrosted air conditioner to perform defrosting operation.

[0125] if the frosting severity level is less than the preset frosting severity level, determine a target defrosting air conditioner according to the frosting severity level of each to-be-defrosted air conditioner in the multi-split air conditioner, and control the target defrosting air conditioner to perform defrosting operation.

[0126] Optionally, the control module 103 is further configured to:

[0127] determine at least two target defrosting air conditioners and a defrosting priority of the target defrosting air conditioners according to the frosting severity level of each to-be-defrosted air conditioner in the multi-split air conditioner;

[0128] control the target defrosting air conditioners to perform defrosting operation according to the defrosting priority.

[0129] Optionally, the control module 103 is further configured to:

[0130] obtain a determination time at which the frosting severity level of each to-be-defrosted air conditioner is determined;

[0131] update the frosting severity level of each to-be-defrosted air conditioner according to an update duration between the determination time and a current time.

[0132] Optionally, the control module 103 is further configured to:

[0133] obtain an operating environment parameter of each to-be-defrosted air conditioner;

[0134] predict a predicted frosting degree corresponding to each to-be-defrosted air conditioner according to the update duration corresponding to each to-be-defrosted air conditioner and the operating environment parameter of each to-be-defrosted air conditioner;

[0135] update the frosting severity level of each to-be-defrosted air conditioner according to the predicted frosting degree corresponding to each to-be-defrosted air conditioner and the update duration.

[0136] Optionally, the receiving module 101 is further configured to:

[0137] obtain a current operating frequency of the to-be-defrosted air conditioner;

[0138] if the current operating frequency is greater than a to-be-defrosted operating frequency, control the to-be-defrosted air conditioner to operate at the to-be-defrosted operating frequency.

[0139] Optionally, the control module 103 is further configured to:

[0140] If the operating environment of the air conditioner to be defrosted meets the preset exit conditions, then the air conditioner to be defrosted is ignored.

[0141] The preset exit conditions include at least one of the following:

[0142] The outdoor ambient temperature of the air conditioner awaiting defrosting is higher than the preset outdoor ambient temperature, and the duration of this condition is longer than the preset duration.

[0143] The outdoor coil temperature of the air conditioner awaiting defrosting is greater than the preset outdoor coil temperature, and the duration of this condition is greater than the preset duration.

[0144] The compressor exhaust temperature of the air conditioner awaiting defrosting is higher than the preset outdoor ambient temperature, and the duration of this condition is longer than the preset duration.

[0145] like Figure 4 As shown, Figure 4 This is a schematic diagram of the structure of an air conditioner provided in an embodiment of this disclosure. The air conditioner 1100 includes a processor 1101 with one or more processing cores, a memory 1102 with one or more computer-readable storage media, and a computer program stored on the memory 1102 and executable on the processor. The processor 1101 and the memory 1102 are electrically connected. Those skilled in the art will understand that the air conditioner structure shown in the figure does not constitute a limitation on the air conditioner, and may include more or fewer components than shown, or combine certain components, or have different component arrangements.

[0146] The processor 1101 is the control center of the air conditioner 1100. It connects to various parts of the air conditioner 1100 via various interfaces and lines. By running or loading software programs and / or units stored in the memory 1102, and by calling data stored in the memory 1102, it executes various functions of the air conditioner 1100 and processes data, thereby providing overall monitoring of the air conditioner 1100. The processor 1101 can be a CPU, GPU, network processor (NP), etc., and can implement or execute the methods, steps, and logic diagrams disclosed in the embodiments of this disclosure.

[0147] In this embodiment of the disclosure, the processor 1101 in the air conditioner 1100 loads the instructions corresponding to the processes of one or more application programs into the memory 1102 according to the following steps, and the processor 1101 runs the application programs stored in the memory 1102 to realize various functions, such as:

[0148] Receive defrost requests from air conditioners in a multi-split air conditioning unit that are waiting to be defrosted, and obtain the degree of frost buildup and the request duration of the air conditioners waiting to be defrosted in the defrost requests;

[0149] determine a frosting severity level of the air conditioner to be defrosted according to the frosting degree and the request duration;

[0150] determine a target air conditioner to be defrosted according to the frosting severity level of each air conditioner to be defrosted in the multi-split air conditioner, and control the target air conditioner to be defrosted to perform defrosting operation.

[0151] Optionally, after the determination of the frosting severity level of the air conditioner to be defrosted according to the frosting degree and the request duration, the method further comprises:

[0152] compare the frosting severity level with a preset frosting severity level;

[0153] if the frosting severity level is greater than or equal to the preset frosting severity level, control the air conditioner to be defrosted to perform defrosting operation.

[0154] if the frosting severity level is less than the preset frosting severity level, determine a target air conditioner to be defrosted according to the frosting severity level of each air conditioner to be defrosted in the multi-split air conditioner, and control the target air conditioner to be defrosted to perform defrosting operation.

[0155] Optionally, the determination of the target air conditioner to be defrosted according to the frosting severity level of each air conditioner to be defrosted in the multi-split air conditioner, and the control of the target air conditioner to be defrosted to perform defrosting operation, comprises:

[0156] determine at least two target air conditioners to be defrosted according to the frosting severity level of each air conditioner to be defrosted in the multi-split air conditioner, and a defrosting priority of the target air conditioners to be defrosted;

[0157] control the target air conditioners to be defrosted to perform defrosting operation according to the defrosting priority.

[0158] Optionally, before the determination of the target air conditioner to be defrosted according to the frosting severity level of each air conditioner to be defrosted in the multi-split air conditioner, and the control of the target air conditioner to be defrosted to perform defrosting operation, the method further comprises:

[0159] obtain a determination time of the frosting severity level of each air conditioner to be defrosted;

[0160] update the frosting severity level of each air conditioner to be defrosted according to an update duration between the determination time and a current time.

[0161] Optionally, before the determination of the target air conditioner to be defrosted according to the frosting severity level of each air conditioner to be defrosted in the multi-split air conditioner, and the control of the target air conditioner to be defrosted to perform defrosting operation, the method further comprises:

[0162] obtain a determination time of the frosting severity level of each air conditioner to be defrosted;

[0163] According to an update duration between the determined time and a current time, a frosting severity level of each of the air conditioners to be defrosted is updated.

[0164] Optionally, after receiving the defrosting request sent by the air conditioner to be defrosted in the multi-split air conditioner, the method further comprises:

[0165] The current operating frequency of the air conditioner to be defrosted is obtained.

[0166] If the current operating frequency is greater than the defrosting operating frequency, the air conditioner to be defrosted is controlled to operate at the defrosting operating frequency.

[0167] Optionally, after receiving the defrosting request sent by the air conditioner to be defrosted in the multi-split air conditioner, the method further comprises:

[0168] If the operating environment of the air conditioner to be defrosted meets a preset exit condition, the air conditioner to be defrosted is ignored.

[0169] The preset exit condition comprises at least one of the following:

[0170] The outdoor environment temperature of the air conditioner to be defrosted is greater than a preset outdoor environment temperature, and a duration is greater than a preset duration.

[0171] The outdoor coil temperature of the air conditioner to be defrosted is greater than a preset outdoor coil temperature, and a duration is greater than a preset duration.

[0172] The compressor discharge temperature of the air conditioner to be defrosted is greater than a preset outdoor environment temperature, and a duration is greater than a preset duration.

[0173] Optionally, as shown in Figure 4 The air conditioner 1100 further comprises a touch display screen 1103, a radio frequency circuit 1104, an audio circuit 1105, an input unit 1106, and a power supply 1107. The processor 1101 is electrically connected with the touch display screen 1103, the radio frequency circuit 1104, the audio circuit 1105, the input unit 1106, and the power supply 1107, respectively. Those skilled in the art can understand that the structure of the air conditioner shown in Figure 4 The structure of the air conditioner shown in the specification does not constitute a limitation on the air conditioner, and can include more or fewer components than the drawings, or combine certain components, or different component arrangements.

[0174] The touch display screen 1103 can be used to display a graphical user interface and receive operation instructions generated by user acting on the graphical user interface. The touch display screen 1103 can include a display panel and a touch panel. The display panel can be used to display information input by the user or provided to the user and various graphical user interfaces of the air conditioner, which can be composed of graphics, text, icons, videos and any combination thereof. Optionally, the display panel can be configured in the form of a liquid crystal display (LCD), an organic light-emitting diode (OLED), etc. The touch panel can be used to collect touch operations of the user thereon or adjacent thereto (such as operations of the user using a finger, a stylus or any suitable object or accessory on or adjacent to the touch panel), and generate corresponding operation instructions, and the operation instructions execute corresponding programs. Optionally, the touch panel can include two parts of a touch detection device and a touch controller. The touch detection device detects the touch position of the user and detects signals generated by the touch operation, and transmits the signals to the touch controller; the touch controller receives the touch information from the touch detection device, and converts it into touch coordinates, and then sends it to the processor 1101, and can also receive commands from the processor 1101 and execute them. The touch panel can cover the display panel, and when the touch panel detects a touch operation thereon or adjacent thereto, it transmits to the processor 1101 to determine the type of the touch event, and then the processor 1101 provides corresponding visual output on the display panel according to the type of the touch event. In the embodiments of the present disclosure, the touch panel and the display panel can be integrated into the touch display screen 1103 to realize the input and output functions. However, in some embodiments, the touch panel and the touch panel can realize the input and output functions as two independent components. That is, the touch display screen 1103 can also realize the input function as part of the input unit 1106.

[0175] The radio frequency circuit 1104 can be used to transceive radio frequency signals to establish wireless communication with a network device or other air conditioner, and transceive signals between the network device or other air conditioner.

[0176] The audio circuit 1105 can be used to provide an audio interface between the user and the air conditioner through a loudspeaker and a microphone. The audio circuit 1105 can convert the received audio data into an electrical signal and transmit it to the loudspeaker, which converts it into a sound signal output. On the other hand, the microphone collects the sound signal and converts it into an electrical signal, which is received by the audio circuit 1105 and converted into audio data. After being processed by the processor 1101, the audio data is transmitted to another air conditioner through the radio frequency circuit 1104, or output to the memory 1102 for further processing. The audio circuit 1105 can also include an earphone jack to provide communication between an external earphone and the air conditioner.

[0177] The input unit 1106 can be configured to receive inputted digital, character information or user feature information (e.g. fingerprint, iris, face information, etc.), and generate keyboard, mouse, joystick, optical or trackball signal input related to user settings and function control.

[0178] The power supply 1107 is configured to supply power to various components of the air conditioner 1100. Optionally, the power supply 1107 can be logically connected to the processor 1101 through a power management system, so as to realize functions such as management of charging, discharging and power consumption management through the power management system. The power supply 1107 can also include one or more than one direct current or alternating current power supply, a recharging system, a power failure detection circuit, a power converter or inverter, a power state indicator and any other components.

[0179] Although Figure 4 The air conditioner 1100 can also include a camera, a sensor, a wireless fidelity module, a Bluetooth module, etc. which are not shown in the embodiments and will not be described herein.

[0180] In the above embodiments, the description of each embodiment has its own focus, and the parts not described in detail in a certain embodiment can be referred to the related description of other embodiments.

[0181] Those skilled in the art can understand that all or part of the steps in the various methods of the above embodiments can be completed by instructions, or by related hardware controlled by the instructions, which can be stored in a computer readable storage medium and loaded and executed by a processor.

[0182] To this end, the embodiments of the present disclosure provide a computer readable storage medium, which stores a plurality of computer programs capable of being loaded by a processor to execute any of the control methods of the air conditioner provided by the embodiments of the present disclosure. The computer program can execute the steps of the control method of the air conditioner as follows:

[0183] Receiving a defrosting request sent by an air conditioner to be defrosted in a multi-split air conditioner, and obtaining a frosting degree and a request duration of the air conditioner to be defrosted in the defrosting request;

[0184] According to the frosting degree and the request duration, determining a frosting severity level of the air conditioner to be defrosted;

[0185] According to the frosting severity levels of each air conditioner to be defrosted in the multi-split air conditioner, determining a target defrosting air conditioner, and controlling the target defrosting air conditioner to perform a defrosting operation.

[0186] The specific implementation of each operation can be referred to the previous embodiments, which will not be described here.

[0187] The computer readable storage medium can include a read only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, etc.

[0188] Due to the computer program stored in the computer readable storage medium, any one of the control methods of the air conditioner provided by the embodiments of the present disclosure can be executed, thus the beneficial effects that can be achieved by any one of the control methods of the air conditioner provided by the embodiments of the present disclosure can be achieved, which will be described in detail in the foregoing embodiments and will not be described herein again.

[0189] In the above-mentioned embodiments of the control device of the air conditioner, the computer readable storage medium, the air conditioner, and the computer program product, the description of each embodiment has its own focus, and the parts not described in detail in a certain embodiment can be referred to the relevant description of other embodiments. It can be clearly understood by those skilled in the art that, for the convenience and brevity of description, the specific working process of the above-mentioned control device of the air conditioner, computer readable storage medium, computer program product, air conditioner and its corresponding units and the beneficial effects that can be brought can be referred to the description of the control method of the air conditioner in the above-mentioned embodiments, and will not be described herein again.

[0190] The above describes in detail the control method, device, air conditioner, computer readable storage medium and computer program product of the air conditioner provided by the embodiments of the present disclosure. The principle and implementation manner of the present disclosure are described by applying specific examples. The above-mentioned embodiment is only used to help understand the method of the present disclosure and its core idea; meanwhile, for those skilled in the art, according to the idea of the present disclosure, the specific implementation manner and application range will be changed. In conclusion, the content of the present description should not be understood as the limitation of the present disclosure.

Claims

1. A control method of an air conditioner, characterized by, The control method of the air conditioner comprises: Receiving a defrosting request sent by a to-be-defrosted air conditioner in a multi-split air conditioner, obtaining a frosting degree and a request duration of the to-be-defrosted air conditioner in the defrosting request; According to the frosting degree and the request duration, determining a frosting severity level of the to-be-defrosted air conditioner; after determining the frosting severity level of the to-be-defrosted air conditioner according to the frosting degree and the request duration, the method further comprises: comparing the frosting severity level with a preset frosting severity level; if the frosting severity level is greater than or equal to the preset frosting severity level, controlling the to-be-defrosted air conditioner to perform a defrosting operation; if the frosting severity level is less than the preset frosting severity level, performing determining a target defrosting air conditioner according to the frosting severity levels of each to-be-defrosted air conditioner in the multi-split air conditioner, and controlling the target defrosting air conditioner to perform a defrosting operation; Before determining the target defrosting air conditioner according to the frosting severity levels of each to-be-defrosted air conditioner in the multi-split air conditioner and controlling the target defrosting air conditioner to perform a defrosting operation, the method further comprises: obtaining a determination time of the frosting severity level of each to-be-defrosted air conditioner; and updating the frosting severity level of each to-be-defrosted air conditioner according to an update duration between the determination time and a current time.

2. The control method of the air conditioner according to claim 1, characterized by, The method of determining the target defrosting air conditioner according to the frosting severity levels of each to-be-defrosted air conditioner in the multi-split air conditioner and controlling the target defrosting air conditioner to perform a defrosting operation comprises: According to the frosting severity levels of each to-be-defrosted air conditioner in the multi-split air conditioner, determining at least two target defrosting air conditioners and a defrosting priority of the target defrosting air conditioners; According to the defrosting priority, controlling the target defrosting air conditioners to perform a defrosting operation in sequence.

3. The control method of the air conditioner according to claim 1, characterized by, The method of updating the frosting severity level of each to-be-defrosted air conditioner according to an update duration between the determination time and a current time comprises: Obtaining an operating environment parameter of each to-be-defrosted air conditioner; According to the update duration corresponding to each to-be-defrosted air conditioner and the operating environment parameter thereof, predicting a predicted frosting degree corresponding to each to-be-defrosted air conditioner; According to the predicted frosting degree corresponding to each to-be-defrosted air conditioner and the update duration, updating the frosting severity level of each to-be-defrosted air conditioner.

4. The control method of the air conditioner according to claim 1, wherein After receiving the defrosting request sent by the to-be-defrosted air conditioner in the multi-split air conditioner, the method further comprises: Obtaining a current operating frequency of the to-be-defrosted air conditioner; If the current operating frequency is greater than a to-be-defrosted operating frequency, controlling the to-be-defrosted air conditioner to operate at the to-be-defrosted operating frequency.

5. The control method of the air conditioner according to claim 1, wherein After receiving the defrosting request sent by the to-be-defrosted air conditioner in the multi-split air conditioner, the method further comprises: If an operating environment of the to-be-defrosted air conditioner meets a preset exit condition, ignoring the to-be-defrosted air conditioner; The preset exit condition comprises at least one of the following: The outdoor environment temperature of the to-be-defrosted air conditioner is greater than a preset outdoor environment temperature, and the duration is greater than a preset duration; The outdoor coil temperature of the to-be-defrosted air conditioner is greater than a preset outdoor coil temperature, and the duration is greater than a preset duration; The compressor discharge temperature of the to-be-defrosted air conditioner is greater than a preset outdoor environment temperature, and the duration is greater than a preset duration.

6. A control device of an air conditioner, characterized by comprising: The control device of the air conditioner comprises: The receiving module is configured to receive a defrosting request sent by an air conditioner to be defrosted in a multi-split air conditioner, and obtain a frosting degree and a request duration of the air conditioner to be defrosted in the defrosting request. The determining module is configured to determine a frosting severity level of the air conditioner to be defrosted according to the frosting degree and the request duration. The control module is configured to determine a target air conditioner to be defrosted according to the frosting severity levels of the air conditioners to be defrosted in the multi-split air conditioner, and control the target air conditioner to perform a defrosting operation.

7. An air conditioner characterized by comprising: The control module is configured to determine a target air conditioner to be defrosted according to the frosting severity levels of the air conditioners to be defrosted in the multi-split air conditioner, and control the target air conditioner to perform a defrosting operation.

8. A computer-readable storage medium, characterized in that, The computer readable storage medium stores a plurality of instructions, and the instructions are adapted to be loaded by the processor to execute the steps of the control method of the air conditioner according to any one of claims 1 to 5. The computer readable storage medium stores a plurality of instructions, and the instructions are adapted to be loaded by the processor to execute the steps of the control method of the air conditioner according to any one of claims 1 to 5.

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