Air conditioner control method, air conditioner and storage medium

Abstract

This application discloses a method for controlling an air conditioner, an air conditioner, and a storage medium. The method includes the steps of: obtaining the temperature of a first indoor heat exchanger of an air conditioner when the air conditioner starts a preset defrosting mode; adjusting the rotational speed of the indoor fan of the air conditioner according to the temperature of the first indoor heat exchanger such that the adjusted rotational speed of the indoor fan is greater than a first target rotational speed corresponding to the preset defrosting mode; and controlling the indoor fan to adjust and operate at a first target rotational speed when the air conditioner satisfies a first preset condition.

Description

Technical Field

[0001] This application claims the priority of a Chinese patent application with an application number of 202310294836.6 filed on March 23, 2023, and incorporates all of its contents herein by reference.

[0002] This application relates to the technical field of air conditioners, and particularly to a control method for air conditioners, air conditioners, and storage media.

Background Art

[0003] During low-temperature heating operation, when certain conditions are reached, an air conditioner generally turns on a defrosting mode to defrost the outdoor heat exchanger. Conventionally, when an air conditioner enters the defrosting mode, it is common to directly turn off the indoor fan or reduce its rotational speed to a low level to meet the heat demand for outdoor defrosting. However, in such a method, the heat sent from the air conditioner to the indoor space during defrosting may decrease, or the heat transport may easily stop, leading to fluctuations in the indoor temperature and affecting the comfort of indoor users.

Summary of the Invention

Problems to be Solved by the Invention

[0004] The main objective of this application is to provide a control method for air conditioners, air conditioners, and storage media that can improve the comfort of outdoor users while ensuring the defrosting effect.

Means for Solving the Problems

[0005] To achieve the above objective, the present invention provides a method for controlling an air conditioner, the method for controlling an air conditioner comprising: acquiring the temperature of a first indoor heat exchanger of the air conditioner when the air conditioner starts a preset defrosting mode; adjusting the rotational speed of the indoor fan of the air conditioner according to the temperature of the first indoor heat exchanger such that the adjusted rotational speed of the indoor fan is greater than a first target rotational speed corresponding to the preset defrosting mode; and controlling the indoor fan to adjust and operate at the first target rotational speed when the air conditioner satisfies a first preset condition.

[0006] In one embodiment, the step of adjusting the rotational speed of the indoor fan of the air conditioner according to the temperature of the first indoor heat exchanger includes the steps of determining a rotational speed adjustment value according to the temperature of the first indoor heat exchanger, increasing the reference rotational speed according to the rotational speed adjustment value to obtain a first rotational speed greater than the first target rotational speed, and controlling the indoor fan to operate at the first rotational speed.

[0007] In one embodiment, the first target rotational speed is zero rotational speed, and the step of controlling the indoor fan to operate at the first target rotational speed includes the step of controlling the indoor fan to operate at a preset rate, reducing the rotational speed to a minimum rotational speed corresponding to the preset defrosting mode, which is greater than the zero rotational speed, and the step of controlling the indoor fan to shut down when the air conditioner satisfies a second preset condition.

[0008] In one embodiment, after the step of controlling the indoor fan to operate at a preset rate with reduced rotational speed to the minimum rotational speed corresponding to the preset defrosting mode, the further step includes obtaining the total time from the time when the air conditioner satisfies the first preset condition to the present time, and determining that the air conditioner satisfies the second preset condition when the total time reaches the first preset time.

[0009] In one embodiment, the preset defrost mode is a first defrost mode, and when the air conditioner starts the preset defrost mode, the steps include: controlling the air conditioner to operate in heating mode before the step of obtaining the first indoor heat exchanger temperature of the air conditioner; controlling the air conditioner to start the first defrost mode when the air conditioner satisfies a first starting condition corresponding to the first defrost mode; controlling the air conditioner to start the second defrost mode when the air conditioner satisfies a second starting condition corresponding to the second defrost mode, and controlling the indoor fan according to the second indoor heat exchanger temperature of the air conditioner and / or the outdoor ambient temperature corresponding to the air conditioner. The air conditioner further includes the steps of adjusting the rotational speed of the air conditioner during operation until it exits the second defrosting mode, and controlling the air conditioner to start the third defrosting mode when the air conditioner satisfies a third starting condition corresponding to the third defrosting mode, and controlling the indoor fan to operate while maintaining the current rotational speed, wherein the frost thickness corresponding to the first defrosting mode is greater than the frost thickness corresponding to the second defrosting mode, the frost thickness corresponding to the first defrosting mode is less than the frost thickness corresponding to the third defrosting mode, the air conditioner is in a heating state in the first and second defrosting modes, and the air conditioner is in a cooling state in the third defrosting mode.

[0010] In one embodiment, after the step of controlling the air conditioner to operate in heating mode, the further step includes obtaining the exhaust characteristic value of the compressor of the air conditioner and the ambient temperature corresponding to the air conditioner, and determining whether the air conditioner satisfies the first starting condition, the second starting condition, or the third starting condition based on the exhaust characteristic value and the ambient temperature.

[0011] In one embodiment, the exhaust characteristic value includes the exhaust temperature value and the exhaust temperature change value, the ambient temperature includes the indoor ambient temperature and the outdoor ambient temperature, the first starting condition includes the exhaust temperature value being less than a first preset temperature, the exhaust temperature change value being greater than a first preset value, the outdoor ambient temperature being less than a first preset outdoor temperature, and the indoor ambient temperature being greater than a first preset indoor temperature, the second starting condition includes the exhaust temperature value being less than a second preset temperature, the exhaust temperature change value being greater than a second preset value, the outdoor ambient temperature being less than a second preset outdoor temperature, and the indoor ambient temperature being greater than a second preset indoor temperature, and the third starting condition includes the exhaust temperature value being less than a third preset temperature. The exhaust temperature change value is greater than the third preset value, the outdoor ambient temperature is less than the third preset outdoor temperature, and the indoor ambient temperature is greater than the third preset indoor temperature, wherein the second preset value is less than the first preset value, the first preset value is less than the third preset value, the second preset temperature is greater than or equal to the first preset temperature, the first preset temperature is greater than or equal to the third preset temperature, the second preset outdoor temperature is greater than or equal to the first preset outdoor temperature, the first preset outdoor temperature is greater than the third preset outdoor temperature, the second preset indoor temperature is greater than or equal to the first preset indoor temperature, and the first preset indoor temperature is greater than or equal to the third preset indoor temperature.

[0012] In one embodiment, the step of determining a second target rotational speed of the indoor fan according to the outdoor ambient temperature corresponding to the air conditioner includes the steps of determining a first preset rotational speed as the second target rotational speed when the outdoor ambient temperature is less than or equal to a second preset ambient temperature, and determining a second preset rotational speed as the second target rotational speed when the outdoor ambient temperature is greater than the second preset ambient temperature, wherein the first preset rotational speed is smaller than the second preset rotational speed.

[0013] In one embodiment, after the step of controlling the air conditioner to start the second defrosting mode, the further step includes: obtaining the operating state of a temperature sensor corresponding to the outdoor ambient temperature; if the operating state is a malfunction state, and if there is temperature data detected by the temperature sensor before the current time, determining the outdoor ambient temperature based on the temperature data and adjusting the operating rotation speed of the indoor fan according to the outdoor ambient temperature corresponding to the air conditioner; and if the operating state is a malfunction state, and if there is no temperature data detected by the temperature sensor before the current time, controlling the indoor fan to operate at the minimum rotation speed corresponding to the second defrosting mode.

[0014] In one embodiment, the upper limit of the rotational speed of the indoor fan during operation after the start of the first defrosting mode, the second defrosting mode, or the third defrosting mode is less than or equal to the minimum rotational speed corresponding to the heating mode.

[0015] In one embodiment, after the step of controlling the air conditioner to operate in heating mode, the further step includes controlling the air guide plate of the air conditioner's outlet to operate at the current angle when the air conditioner starts the first defrost mode or the second defrost mode, and controlling the air guide plate to operate at a cold air prevention angle when the air conditioner starts the third defrost mode.

[0016] In one embodiment, after the step of controlling the air conditioner to operate in heating mode, the further step includes controlling an electric auxiliary heating module provided in the indoor unit of the air conditioner to turn on when the air conditioner starts the second defrosting mode, and controlling the electric auxiliary heating module to turn off when the air conditioner starts the first defrosting mode or the third defrosting mode.

[0017] In one embodiment, the step of controlling an electric auxiliary heating module provided in the indoor unit of the air conditioner to turn on when the air conditioner starts the second defrosting mode includes the step of obtaining the outdoor ambient temperature corresponding to the air conditioner when the air conditioner starts the second defrosting mode, and the step of controlling the electric auxiliary heating module to turn on if the outdoor ambient temperature is less than or equal to a first preset ambient temperature.

[0018] Furthermore, in order to achieve the above objectives, the present invention further proposes an air conditioner. The air conditioner includes a memory, a processor, and an air conditioner control program stored in the memory and executable on the processor, and when the air conditioner control program is executed by the processor, the steps of the air conditioner control method described in any one of the above paragraphs are realized.

[0019] Furthermore, in order to achieve the above objectives, the embodiment of the present application further proposes a storage medium. The storage medium stores an air conditioner control program, and when the air conditioner control program is executed by the processor, the steps of the air conditioner control method described in any one of the above paragraphs are realized. [Effects of the Invention]

[0020] The air conditioner control method proposed by this application does not directly adjust to the target rotation speed when starting the defrosting mode. Instead, when the air conditioner starts the preset defrosting mode, in the early stage, first, the rotation speed of the indoor fan of the air conditioner is adjusted according to the temperature of the first indoor heat exchanger. The adjusted rotation speed of the indoor fan is greater than the target rotation speed required for defrosting operation. Furthermore, in the later stage, when the first preset condition is reached, it is further adjusted to the target rotation speed for operation. By doing so, the operation limit of the indoor fan during defrosting operation is reduced, the operation time of the indoor fan at a high rotation speed is extended, heat required for outdoor defrosting is supplied, and as much heat as possible is transported indoors during defrosting, thereby ensuring the defrosting effect and improving the comfort of outdoor users.

Brief Description of the Drawings

[0021] [Figure 1] It is a schematic diagram of the hardware structure related to the execution of an embodiment of the air conditioner of this application. [Figure 2] It is a schematic flowchart of an embodiment of the air conditioner control method of this application. [Figure 3] It is a schematic flowchart of another embodiment of the air conditioner control method of this application. [Figure 4] It is a diagram showing the change in the rotation speed of the indoor fan in the defrosting mode in an embodiment of the air conditioner control method of this application. [Figure 5] It is a schematic flowchart of another embodiment of the air conditioner control method of this application. [Figure 6] It is a schematic flowchart of yet another embodiment of the air conditioner control method of this application.

Modes for Carrying Out the Invention

[0022] Referring to the accompanying drawings, in combination with the embodiments, the realization of the object of this application, functional features and advantages will be further described.

[0023] It should be understood that the specific embodiments described herein are for the purpose of interpreting the present application only and are not used to limit the present application.

[0024] The embodiments of the present application propose an air conditioner. The air conditioner includes all types of air conditioners, such as wall-mounted air conditioners, floor-standing air conditioners, window air conditioners, ceiling-suspended air conditioners, etc.

[0025] In the embodiment of the present application, referring to FIG. 1, the air conditioner includes an indoor unit 3, an outdoor unit 2, and a control device 1. The indoor unit 3 and the outdoor unit 2 are both connected to the control device 1. The indoor unit 3 includes an indoor heat exchanger and an indoor fan 31 provided corresponding to the indoor heat exchanger. The outdoor unit 2 includes a compressor 21, an electronic expansion valve 23, a direction switching valve 22, an outdoor heat exchanger, and an outdoor fan 24 provided corresponding to the outdoor heat exchanger.

[0026] The refrigerant circulation circuit of the air conditioner includes a compressor 21, a direction switching valve 22, an indoor heat exchanger, an electronic expansion valve 23, and an outdoor heat exchanger. The compressor 21, the direction switching valve 22, the electronic expansion valve 23, the indoor fan 31, and the outdoor fan 24 are all connected to the control device 1.

[0027] The exhaust port of the compressor 21, the suction port of the compressor 21, the indoor heat exchanger, and the outdoor heat exchanger are all connected to the direction switching valve 22. The electronic expansion valve 23 is provided between the indoor heat exchanger and the outdoor heat exchanger and is used to throttle and depressurize the passing refrigerant.

[0028] The directional control valve 22 has a first valve position and a second valve position to enable switching between cooling and heating states. When the directional control valve 22 operates in the first valve position, the refrigerant flowing out of the compressor 21 returns to the compressor 21 after passing through the outdoor heat exchanger, the electronic expansion valve 23, and the indoor heat exchanger in that order, and in this case the air conditioner is in the cooling state. When the directional control valve 22 operates in the second valve position, the refrigerant flowing out of the compressor 21 returns to the compressor 21 after passing through the indoor heat exchanger, the electronic expansion valve 23, and the outdoor heat exchanger in that order, and in this case the air conditioner is in the heating state.

[0029] Based on the differences in the operating conditions of the air conditioner, the heating mode, first defrost mode, second defrost mode, and third defrost mode operated by the air conditioner according to the embodiment of this application will be specifically described.

[0030] In heating mode, the directional control valve 22 operates in the second valve position, the air conditioner is in a heating state, the electronic expansion valve 23 operates at the first opening degree, the compressor 21 operates at the heating frequency, and the outdoor fan 24 is turned on. During this process, the outdoor heat exchanger is in an evaporation state, and the indoor heat exchanger is in a condensation state.

[0031] In the first defrosting mode, the directional control valve 22 operates in the second valve position, the air conditioner is in the heating state, the electronic expansion valve 23 operates at a second opening greater than the first opening, the compressor 21 operates at the first defrosting frequency, and the outdoor fan 24 is off. During this process, the indoor heat exchanger is in a condensation state.

[0032] In the second defrosting mode, the directional control valve 22 operates in the second valve position, the air conditioner is in heating mode, the electronic expansion valve operates at a second opening greater than the first opening, the compressor 21 operates at a second defrosting frequency lower than the first defrosting frequency, and the outdoor fan 24 is off. During this process, the indoor heat exchanger is in a condensing state.

[0033] In the third defrosting mode, the directional control valve 22 operates at the first valve position, the air conditioner is in a cooling state, the electronic expansion valve 23 operates at a third opening smaller than the second opening, the compressor 21 operates at the third defrosting frequency, the outdoor fan 24 is on, and the third opening is a throttle opening. During this process, the indoor heat exchanger is in an evaporation state, and the outdoor heat exchanger is in a condensation state.

[0034] The frost thickness corresponding to the first defrosting mode is greater than the frost thickness corresponding to the second defrosting mode, and the frost thickness corresponding to the third defrosting mode is greater than the frost thickness corresponding to the first defrosting mode. When the air conditioner switches from heating mode to the first or second defrosting mode, there is no need to switch the direction of the directional valve 22. The indoor heat exchanger maintains a condensation state, and the opening of the electronic expansion valve 23 is increased to raise the temperature of the refrigerant flowing into the outdoor heat exchanger, melting the ice and frost on the outdoor heat exchanger. This effectively reduces noise caused by switching the directional valve 22 and reduces temperature fluctuations in the indoor environment. When the air conditioner switches from heating mode to the third defrosting mode, it is necessary to switch the direction of the directional valve 22. The indoor heat exchanger is in an evaporation state, the outdoor heat exchanger switches to a condensation state, and the high-temperature refrigerant discharged from the compressor 21 flows into the outdoor heat exchanger to perform heat exchange and remove frost.

[0035] In one embodiment, the second opening is specifically the maximum opening of the electronic expansion valve 23. In other embodiments, the second opening may be any other opening greater than the first and third openings.

[0036] Furthermore, the air conditioner may further include a temperature sensor 01 provided on the coil of the indoor heat exchanger and used to detect the temperature of the first indoor heat exchanger. The control device 1 may be connected to the temperature sensor 01 to acquire the temperature data detected by the temperature sensor 01.

[0037] In one embodiment, referring to Figure 1, the control device 1 for the air conditioner includes a processor 1001 (e.g., CPU), a memory 1002, and a timer 1003, etc. Each component within the control device 1 is connected via a communication bus. The memory 1002 may be a high-speed RAM memory, or a stable memory (non-volatile memory), such as a magnetic disk memory. The memory 1002 may be a storage device independent of the processor 1001.

[0038] Those skilled in the art will understand that the structure of the apparatus shown in Figure 1 does not constitute a limitation on the apparatus, and that it may include more or fewer parts than shown, or that some parts may be combined or arranged differently.

[0039] As shown in Figure 1, the memory 1002, which serves as a type of storage medium, may contain an air conditioner control program. In the device shown in Figure 1, the processor 1001 may be used to call the air conditioner control program stored in the memory 1002 and to perform the operations of the relevant steps of the air conditioner control method in the following embodiment.

[0040] Embodiments of the present invention further provide a method for controlling an air conditioner that can be applied to an air conditioner.

[0041] Referring to Figure 2, an embodiment of the air conditioner control method of the present invention is proposed. In this embodiment, the air conditioner control method includes the following steps.

[0042] In step S10, when the air conditioner starts the preset defrosting mode, the temperature of the first indoor heat exchanger of the air conditioner is obtained.

[0043] In one embodiment, the preset defrost mode is a defrost mode in which the air conditioner is in heating mode, and specifically may include the first defrost mode or the second defrost mode described above. In another embodiment, the preset defrost mode may be a third defrost mode.

[0044] When the defrosting conditions are met during heating operation, the air conditioner will activate the preset defrosting mode.

[0045] The temperature of the first indoor heat exchanger here is specifically obtained by acquiring temperature data detected by the above-mentioned temperature sensor in real time, or by acquiring it at set intervals.

[0046] In step S20, the rotation speed of the indoor fan of the air conditioner is adjusted according to the temperature of the first indoor heat exchanger so that the adjusted rotation speed of the indoor fan is greater than the first target rotation speed corresponding to the preset defrosting mode.

[0047] Specifically, the first target rotational speed includes the minimum rotational speed at which the indoor fan is allowed to operate, or zero rotational speed (i.e., when the indoor fan shuts down). Here, the first target rotational speed will differ for different preset defrosting modes.

[0048] Specifically, a rotational speed adjustment parameter (rotational speed adjustment value and / or rotational speed adjustment direction) may be determined according to the first indoor heat exchanger temperature, and the current rotational speed or preset rotational speed of the indoor fan may be adjusted according to the rotational speed adjustment parameter within a range greater than the first target rotational speed, and the indoor fan may be controlled to operate at the adjusted rotational speed. Alternatively, a rotational speed value pre-associated with the first indoor heat exchanger temperature may be determined as the target operating rotational speed of the indoor fan, and the indoor fan may be controlled to operate at the target operating rotational speed, where the associated rotational speed value is greater than the first target rotational speed.

[0049] In step S30, when the air conditioner satisfies the first preset conditions, the indoor fan is controlled to adjust and operate at the first target rotational speed.

[0050] The first preset condition is specifically the condition that the operating parameters of the air conditioner itself and / or the environmental parameters of the environment in which it is located (e.g., operating time in defrost mode, number of adjustments to the indoor fan rotation speed, indoor ambient temperature and / or outdoor heat exchanger temperature) must satisfy when the air conditioner needs to be operated at reduced speed.

[0051] When the air conditioner does not meet the first preset conditions, the temperature of the first indoor heat exchanger may be continuously acquired, and the rotational speed of the indoor fan may be adjusted according to the temperature of the first indoor heat exchanger, or the indoor fan may be controlled to maintain the adjusted rotational speed.

[0052] In one embodiment, the first target rotational speed corresponding to the preset defrosting mode is zero rotational speed, and the indoor fan is controlled to shut down when the air conditioner meets the first preset condition.

[0053] In other embodiments, the first target rotational speed corresponding to the preset defrosting mode is the minimum rotational speed. Therefore, the indoor fan is controlled to operate at the minimum rotational speed when the air conditioner meets the first preset condition.

[0054] The air conditioner control method proposed by the embodiment of the present invention does not adjust to the target rotation speed immediately when the defrost mode is started, but rather, when the air conditioner starts the preset defrost mode, in the early stage, first the rotation speed of the air conditioner's indoor fan is adjusted according to the temperature of the first indoor heat exchanger, and the rotation speed of the indoor fan after adjustment is greater than the target rotation speed required for defrosting operation. Furthermore, in the later stage, when the first preset condition is reached, the rotation speed is further adjusted to the target rotation speed and operated. This reduces the operating restrictions of the indoor fan during defrosting operation, extends the operating time of the indoor fan at a high rotation speed, supplies the heat necessary for outdoor defrosting, and transports as much heat as possible to the room during defrosting, thereby ensuring the effectiveness of defrosting while improving the comfort of the outdoor user. In addition, in the initial stage of the defrost mode, the refrigerant moves during the process of adjusting the electronic expansion valve to the defrosting opening, and the indoor fan operates at a high rotation speed, which is advantageous in reducing the operating noise of the air conditioner during the defrosting process.

[0055] Furthermore, in one embodiment, the step of adjusting the rotational speed of the indoor fan of the air conditioner according to the first indoor heat exchanger temperature includes the steps of determining a rotational speed adjustment value according to the first indoor heat exchanger temperature, and increasing the reference rotational speed according to the rotational speed adjustment value to obtain a first rotational speed greater than the first target rotational speed, wherein different first indoor heat exchanger temperatures correspond to different rotational speed adjustment values. In one embodiment, the rotational speed adjustment value can be obtained by adjusting the temperature of the first indoor heat exchanger according to a preset compensation coefficient. In another embodiment, the rotational speed adjustment value can be obtained by consulting a table based on the first indoor heat exchanger temperature. Alternatively, the temperature interval in which the first indoor heat exchanger temperature is located can be identified, and the rotational speed adjustment value can be determined according to the temperature interval, where different temperature intervals correspond to different rotational speed adjustment values.

[0056] The rotational speed adjustment value may include a rotational speed adjustment range value or a rotational speed adjustment coefficient.

[0057] In one embodiment, the reference rotation speed may be a fixed rotation speed set in advance. In another embodiment, the reference rotation speed may be determined according to the actual operating conditions of the air conditioner. For example, different preset defrosting modes may correspond to different reference rotation speeds, and the rate of temperature change of the outdoor heat exchanger after the start of a preset defrosting mode may correspond to different reference rotation speeds. Here, the reference rotation speed is greater than the first target rotation speed.

[0058] In one embodiment, the rotational speed adjustment value is the rotational speed adjustment range value, and the sum of the rotational speed adjustment range value and the reference rotational speed is defined as the first rotational speed. In another embodiment, the rotational speed adjustment value is the rotational speed adjustment coefficient, and the product of the rotational speed adjustment coefficient and the reference rotational speed is defined as the first rotational speed.

[0059] For example, the first rotational speed at which the indoor fan should operate can be determined according to the following formula. EFROST_JSX_B = DEFROST_JSX_BASE + K2*T2

[0060] Here, EFROST_JSX_B is the first rotational speed, DEFROST_JSX_BASE is the reference rotational speed, T2 is the first indoor heat exchanger temperature, K2 is the preset compensation coefficient for T2, and K2*T2 is the rotational speed adjustment value.

[0061] In step S23, the indoor fan is controlled to operate at the first rotational speed.

[0062] In this embodiment, the accuracy of the first rotation speed determined by the above method can be guaranteed, thereby ensuring the defrosting effect while further improving the comfort of outdoor users.

[0063] Furthermore, based on the embodiments described above, another embodiment of the air conditioner control method of the present invention is proposed. In one embodiment, the first target rotational speed is zero rotational speed, and referring to Figure 3, the step of controlling the indoor fan to operate at the first target rotational speed is to control the indoor fan in step S31 to reduce the rotational speed at a preset rate to the lowest rotational speed corresponding to the preset defrosting mode, which is greater than the zero rotational speed.

[0064] The operating noise of the air conditioner corresponding to this preset rate is lower than the preset noise level.

[0065] Specifically, when the air conditioner satisfies the first preset condition, the air conditioner's electronic expansion valve enters an operating state with a larger opening.

[0066] In step S32, the indoor fan is controlled to shut down the air conditioner when the second preset condition is met.

[0067] The second preset condition is specifically the conditions that the indoor fan must satisfy when it shuts down, including its own operating parameters and / or the environmental parameters of the environment in which it is located (e.g., the operating time after the indoor fan slows down, the time the indoor fan has been operating at its lowest rotational speed, the indoor ambient temperature, and / or the outdoor heat exchanger temperature).

[0068] When the air conditioner does not meet the second preset condition, the indoor fan can operate at the lowest rotational speed.

[0069] In one embodiment, the air conditioner adjusts the rotation speed of the indoor fan based on the indoor heat exchanger temperature, and after a certain period of time, reduces the rotation speed at a constant rate to the minimum rotation speed. This reduces the operating noise of the air conditioner during the reduction in rotation speed, maintains heat transport to the room, and effectively improves the defrosting speed by increasing the amount of defrosting heat supplied to the outdoor heat exchanger. By controlling the indoor fan to shut down when the second preset condition is met by operating at the minimum rotation speed, the defrosting effect is further improved by ensuring that the outdoor heat exchanger has enough heat to thoroughly melt the ice and frost on it. Thus, the embodiment of the present invention can effectively achieve both improved indoor comfort and improved defrosting effect by the method described above.

[0070] Furthermore, in one embodiment, after the step of controlling the indoor fan to operate at a preset rate with the rotation speed reduced to the minimum rotation speed, the further step includes obtaining the total time from the time when the air conditioner satisfies the first preset condition to the present time, and determining that the air conditioner satisfies the second preset condition when the total time reaches the first preset time.

[0071] Specifically, the air conditioner starts timing when the first preset condition is met and controls the indoor fan to operate at a preset rate, reducing its rotation speed to the minimum rotation speed. During the process of the indoor fan operating at the minimum rotation speed, the timing time is obtained as the total time. If the total time is equal to or greater than the first preset time, the air conditioner determines that the second preset condition has been met and controls the outdoor fan to turn it off.

[0072] The first preset time may be a pre-set total time, or it may be a time determined according to the operating parameters and / or environmental parameters of the air conditioner during defrosting operation.

[0073] In one embodiment, the stage in which the indoor fan operates at a reduced rotational speed to the minimum rotational speed and maintains that minimum rotational speed may be considered a wind speed reduction stage. By controlling the indoor fan to turn off when the total time in this stage becomes sufficiently long, the defrosting effect of the outdoor heat exchanger can be ensured while further improving the comfort of indoor users.

[0074] To better understand the solution of the embodiment of the present invention, the rotation speed adjustment method of an indoor fan in one embodiment will be described below with reference to Figure 4. Referring to Figure 4, after starting the preset defrosting mode, first the rotation speed of the indoor fan is adjusted in the adjustment area based on the indoor heat exchanger temperature. After the first preset condition is met, the fan enters the reduction area and the rotation speed of the indoor fan is reduced at the preset rate. When the rotation speed is reduced to the minimum, the fan enters the low-speed area and operates while maintaining the set rotation speed. The indoor fan is controlled to turn off when the operating time of the indoor fan in the reduction area and low-speed area reaches the first preset time.

[0075] Furthermore, based on any one of the above embodiments, we propose another embodiment of the control method for the air conditioner of the present invention. In one embodiment, the preset defrost mode is a first defrost mode, and referring to Figure 5, the following steps are included before step S10.

[0076] In step S01, the air conditioner is controlled to operate in heating mode.

[0077] In step S02, the air conditioner is controlled to start the first defrost mode when the first starting condition corresponding to the first defrost mode is met.

[0078] Step S10 described above is performed when the first defrosting mode is started.

[0079] In step S03, when the air conditioner satisfies the second starting conditions corresponding to the second defrosting mode, the air conditioner is controlled to start the second defrosting mode, and the rotational speed of the indoor fan during operation is adjusted according to the second indoor heat exchanger temperature of the air conditioner or the outdoor ambient temperature corresponding to the air conditioner until it exits the second defrosting mode.

[0080] In one embodiment, during the second defrosting mode, the coil temperature of the indoor heat exchanger is periodically detected as the second indoor heat exchanger temperature, and the rotation speed of the indoor fan is adjusted in accordance with the second indoor heat exchanger temperature. The specific adjustment procedure can be found in the implementation process for adjusting the rotation speed of the indoor fan according to the first indoor heat exchanger temperature in the above-described embodiment, and will not be explained here.

[0081] In another embodiment, the outdoor ambient temperature may also be detected periodically in the second defrosting mode, and the rotation speed of the indoor fan may be adjusted according to the detected outdoor ambient temperature. Different outdoor ambient temperatures correspond to different indoor fan rotation speeds, and the rotation speed of the indoor fan shows a positive correlation with the outdoor ambient temperature.

[0082] In yet another embodiment, the outdoor ambient temperature and the coil temperature of the indoor heat exchanger may also be detected periodically in the second defrosting mode, and the rotation speed of the indoor fan may be adjusted according to the detected outdoor ambient temperature and indoor heat exchanger temperature, with different outdoor ambient temperatures corresponding to different indoor fan rotation speeds.

[0083] In step S04, when the air conditioner satisfies the third starting conditions corresponding to the third defrosting mode, the air conditioner is controlled to start the third defrosting mode, and the indoor fan is controlled to operate while maintaining the current rotation speed.

[0084] The frost thickness corresponding to the first defrosting mode is greater than the frost thickness corresponding to the second defrosting mode, and the frost thickness corresponding to the first defrosting mode is less than the frost thickness corresponding to the third defrosting mode, the air conditioner is in a heating state in the first and second defrosting modes, and the air conditioner is in a cooling state in the third defrosting mode.

[0085] In one embodiment, when the air conditioner is operating in heating mode, it can defrost while maintaining the heating state when the first or second defrosting mode is activated. In the first defrosting mode, since a lot of heat is required to melt the frost on the outdoor heat exchanger, the rotation speed of the indoor fan is first adjusted according to the indoor heat exchanger temperature and reduced to a target rotation speed before operation, thereby ensuring sufficient heat to thoroughly melt the ice and frost on the outdoor heat exchanger. In the second defrosting mode, since less heat is required to melt the frost on the outdoor heat exchanger, the rotation speed of the indoor fan is adjusted throughout the process in accordance with the temperature of the indoor heat exchanger, thereby ensuring the defrosting effect while reducing fluctuations in indoor temperature and improving the comfort of indoor users. When the air conditioner is operating in cooling mode, it is necessary to activate the third defrosting mode and switch to the cooling state to defrost. In this case, the indoor fan operates at the rotation speed used during heating, which can improve the system's heat exchange efficiency and enhance the defrosting effect.

[0086] Furthermore, in one embodiment, after the step of controlling the air conditioner to operate in heating mode, the further step includes obtaining the exhaust characteristic value of the air conditioner's compressor and the ambient temperature corresponding to the air conditioner, and determining whether the air conditioner satisfies the first starting condition, the second starting condition, or the third starting condition based on the exhaust characteristic value and the ambient temperature.

[0087] Exhaust characteristic values ​​specifically include exhaust temperature values, exhaust pressure values, exhaust temperature change values, and / or exhaust pressure change values.

[0088] Ambient temperature specifically includes indoor ambient temperature and / or outdoor ambient temperature.

[0089] The target conditions that the exhaust characteristic values ​​must achieve differ for each of the first, second, and third starting conditions.

[0090] In one embodiment, the exhaust characteristic value includes the exhaust temperature value and the exhaust temperature change value, the ambient temperature includes the indoor ambient temperature and the outdoor ambient temperature, and based thereon, the first starting condition includes the exhaust temperature value being less than the first preset temperature, the exhaust temperature change value being greater than the first preset value, the outdoor ambient temperature being less than the first preset outdoor temperature, and the indoor ambient temperature being greater than the first preset indoor temperature, the second starting condition includes the exhaust temperature value being less than the second preset temperature, the exhaust temperature change value being greater than the second preset value, the outdoor ambient temperature being less than the second preset outdoor temperature, and the indoor ambient temperature being greater than the second preset indoor temperature, and the third starting condition includes the exhaust temperature value being less than the third preset temperature The following conditions are met: the exhaust temperature change value is greater than the third preset value; the outdoor ambient temperature is less than the third preset outdoor temperature; and the indoor ambient temperature is greater than the third preset indoor temperature. The second preset value is less than the first preset value; the first preset value is less than the third preset value; the second preset temperature is greater than or equal to the first preset temperature; the first preset temperature is greater than or equal to the third preset temperature; the second preset outdoor temperature is greater than or equal to the first preset outdoor temperature; the first preset outdoor temperature is greater than the third preset outdoor temperature; the second preset indoor temperature is greater than or equal to the first preset indoor temperature; and the first preset indoor temperature is greater than or equal to the third preset indoor temperature.

[0091] In one embodiment, the first preset value, second preset value, third preset value, first preset temperature, second preset temperature, third preset temperature, first preset outdoor temperature, second preset outdoor temperature, third preset outdoor temperature, first preset indoor temperature, second preset indoor temperature, and third preset indoor temperature may all be fixed parameters set in advance, or they may be parameters determined according to the actual operating conditions of the air conditioner, for example, according to the operating frequency of the compressor or the temperature of the outdoor heat exchanger.

[0092] In other embodiments, the exhaust characteristic value may include the exhaust temperature change value, the ambient temperature may include the outdoor ambient temperature, and each starting condition may include a threshold range corresponding to the parameter.

[0093] In one embodiment, by combining the compressor's exhaust characteristic value and the ambient temperature, the current degree of frost on the outdoor heat exchanger and the indoor heating demand can be accurately reflected. Therefore, by determining whether or not to start the defrosting mode by combining multiple parameters, the accuracy of determining the need for defrosting is improved, the accuracy of defrosting control is enhanced, and frost on the outdoor heat exchanger can be removed while minimizing fluctuations in indoor temperature, thereby improving indoor comfort while guaranteeing the defrosting effect. In particular, by combining the exhaust temperature change value, exhaust temperature value, indoor ambient temperature, and outdoor ambient temperature, the accuracy of characterizing the impact of the outdoor defrosting state and the selection of different defrosting modes on indoor comfort can be increased. Therefore, by combining these parameters to determine when to start defrosting, the accuracy of defrosting control can be further enhanced, and an effective improvement in indoor comfort and defrosting effect can be achieved.

[0094] Furthermore, based on the above-described embodiment, we propose yet another embodiment of the air conditioner control method of the present invention. In one embodiment, referring to Figure 6, the step of determining a second target rotational speed of the indoor fan according to the outdoor ambient temperature corresponding to the air conditioner is, in step S021, if the outdoor ambient temperature is less than or equal to a second preset ambient temperature, the first preset rotational speed is determined as the second target rotational speed.

[0095] In step S022, if the outdoor ambient temperature is greater than the second preset ambient temperature, the second preset rotation speed is determined as the second target rotation speed.

[0096] Here, the first preset rotation speed is smaller than the second preset rotation speed.

[0097] Here, the first preset rotation speed and the second preset rotation speed are specifically predetermined rotation speeds.

[0098] In one embodiment, the outdoor ambient temperature can accurately reflect the risk of frost formation on the outdoor heat exchanger. The lower the outdoor ambient temperature, the higher the risk of frost formation, and the more heat is required to defrost the outdoor heat exchanger. By reducing the fan rotation speed accordingly, more heat is transported by the refrigerant to the outdoor heat exchanger for defrosting, thereby improving the defrosting effect of the outdoor heat exchanger. Conversely, the higher the outdoor ambient temperature, the lower the risk of frost formation, and the less heat is required for the outdoor heat exchanger. By increasing the fan rotation speed accordingly, the defrosting effect of the outdoor heat exchanger can be ensured while reducing fluctuations in the indoor ambient temperature, improving the comfort of indoor users during defrosting.

[0099] Furthermore, in one embodiment, after the step of controlling the air conditioner to start the second defrosting mode, the steps include: acquiring the operating state of a temperature sensor corresponding to the outdoor ambient temperature; if the operating state is a malfunction state, and if there is temperature data detected by the temperature sensor before the current time, determining the outdoor ambient temperature based on the temperature data and adjusting the operating rotation speed of the indoor fan according to the outdoor ambient temperature corresponding to the air conditioner; and if the operating state is a malfunction state, and if there is no temperature data detected by the temperature sensor before the current time, controlling the indoor fan to operate at the minimum rotation speed corresponding to the second defrosting mode.

[0100] If the operating status is normal, the data currently detected by the temperature sensor is determined to be the outdoor ambient temperature.

[0101] Here, the temperature data may include temperature values ​​detected by one or more temperature sensors. The temperature value detected at a time adjacent to the current time may be determined as the outdoor ambient temperature. Alternatively, the average value of multiple temperature values ​​may be determined as the outdoor ambient temperature.

[0102] In one embodiment, by doing as described above, if the temperature sensor corresponding to the outdoor ambient temperature fails, and if there is previously detected temperature data, it is guaranteed that the outdoor ambient temperature will be determined based on the previously detected temperature data. This also guarantees the accuracy of the rotation speed of the indoor fan in the second defrosting mode, which is controlled based on the outdoor ambient temperature, and ensures that sufficient heat can be supplied for defrosting the outdoor heat exchanger based on the control of the indoor fan, even in the event of a sensor failure. On the other hand, if the sensor fails and there is no previously detected temperature data, operating at the minimum rotation speed further guarantees that sufficient heat can be supplied for defrosting the outdoor heat exchanger based on the control of the indoor fan in the event of a sensor failure. As can be seen from this, by adjusting the rotation speed of the indoor fan based on the outdoor ambient temperature in the second defrosting mode, the defrosting effect of the outdoor heat exchanger can be effectively improved even in the event of a temperature sensor detection failure.

[0103] Furthermore, based on any one of the above embodiments, in one embodiment, the upper limit of the operating rotation speed of the indoor fan after the start of the first defrosting mode, the second defrosting mode, or the third defrosting mode is less than or equal to the minimum rotation speed corresponding to the heating mode.

[0104] In other words, in defrosting mode, no matter how the indoor fan is adjusted, the rotational speed of the indoor fan during operation is always below the minimum rotational speed corresponding to heating mode.

[0105] According to this, it is possible to ensure that the air conditioner can supply sufficient heat to the outdoor heat exchanger to guarantee the defrosting effect while reducing temperature fluctuations in the indoor environment, thereby improving the defrosting effect and enhancing the comfort of indoor users.

[0106] In other embodiments, the rotation speed of the indoor fan in defrosting mode may be greater than the minimum rotation speed corresponding to heating mode.

[0107] Furthermore, based on any one of the above embodiments, in one embodiment, after the step of controlling the air conditioner to operate in heating mode, the step of controlling the air guide plate of the air conditioner's outlet to operate while maintaining the current angle when the air conditioner starts the first defrost mode or the second defrost mode, and the step of controlling the air guide plate to operate at a cold air prevention angle when the air conditioner starts the third defrost mode.

[0108] Here, the cold air prevention angle includes, but is not limited to, the angle at which the air guide plate obstructs the air outlet and the angle at which the air guide plate directs airflow towards an unoccupied area.

[0109] The cold air prevention angle may be determined specifically based on the location of the indoor user, the indoor heat exchanger temperature, and / or the indoor temperature.

[0110] After the defrosting mode is activated, the air guide plate is first controlled to operate according to the corresponding air guide angle, and then the rotation speed of the indoor fan is adjusted according to the method described in the above embodiment.

[0111] In one embodiment, as described above, when heating and defrosting in the first or second defrosting mode, the air guide plate maintains its current angle, allowing the air conditioner to continuously supply heat to the room, improving the comfort of the room during defrosting, and reducing the impact on the lifespan of the air guide plate due to frequent operation. When defrosting in cooling mode, the air guide plate operates at a cold air prevention angle, preventing cold air from blowing directly at people and reducing the amount of cold air released into the room, thereby improving the comfort of the room during defrosting.

[0112] Furthermore, based on any one of the above embodiments, in one embodiment, the steps include: controlling the air conditioner to operate in heating mode, then controlling an electric auxiliary heating module provided in the indoor unit of the air conditioner to turn on when the air conditioner starts the second defrosting mode; and controlling the electric auxiliary heating module to turn off when the air conditioner starts the first defrosting mode or the third defrosting mode.

[0113] Specifically, the electric auxiliary heating module may operate at a preset fixed power when switched on, or its operating power may be determined according to the rotation speed of the indoor fan.

[0114] In one embodiment, turning on the electric auxiliary heating module when the frost is thin is advantageous in further reducing indoor temperature fluctuations during defrosting and improving the comfort of indoor users. Turning off the electric auxiliary heating module when the frost is thick, and since the indoor fan needs to be turned off in the first defrosting mode, turning off the electric auxiliary heating avoids the protective shutdown of the air conditioner due to excessively high temperatures in the indoor heat exchanger, which is advantageous in improving the operational stability of the defrosting mode. In the third defrosting mode, the indoor heat exchanger is in an evaporation state, and turning on the electric auxiliary heating would affect the evaporation effect of the indoor heat exchanger and reduce the defrosting efficiency, so turning off the electric auxiliary heating is advantageous in improving the defrosting effect of the air conditioner. Therefore, the above-described control method for the electric auxiliary heating module can improve the defrosting effect of the air conditioner while also improving the comfort of indoor users.

[0115] Furthermore, in one embodiment, the step of controlling the electric auxiliary heating module to turn on when the air conditioner starts the second defrosting mode includes the step of obtaining the outdoor ambient temperature corresponding to the air conditioner when the air conditioner starts the second defrosting mode, and the step of controlling the electric auxiliary heating module provided in the indoor unit of the air conditioner to turn on if the outdoor ambient temperature is less than or equal to a first preset ambient temperature.

[0116] The first preset ambient temperature is used to identify a characterization parameter that represents the magnitude of the risk of frost buildup on the outdoor heat exchanger. A lower outdoor ambient temperature indicates that frost buildup on the outdoor heat exchanger is more severe.

[0117] In one embodiment, turning on electric auxiliary heating when the outdoor ambient temperature is low in the second defrosting mode is advantageous in keeping frost thin while improving indoor comfort.

[0118] Furthermore, the embodiment of the present application proposes a storage medium. The storage medium stores an air conditioner control program, and when the air conditioner control program is executed by the processor, the relevant steps of any one embodiment of the air conditioner control method described above are realized.

[0119] In this specification, the terms “include,” “incorporate,” or any other variations thereof are intended to cover non-exclusive inclusion, meaning that a process, method, article, or system of elements includes not only those elements but also other elements not explicitly listed, or elements specific to this type of process, method, article, or system. Where there is no further restriction, an element limited by the phrase “includes one…” does not exclude the presence of other identical elements within the process, method, article, or system that includes that element.

[0120] The numbering of the embodiments in the present application above is for illustrative purposes only and does not indicate any ranking of the embodiments.

[0121] Through the above description of the embodiments, those skilled in the art will clearly understand that the methods of the above embodiments can be implemented by adding a general-purpose hardware platform necessary for the software (of course, it is also possible to implement it using hardware, but in many cases the former is a better method). Based on this understanding, the technical proposal of the present application can be embodied in the form of a software product, essentially or in part with respect to the prior art. The computer software product can be stored in a storage medium such as ROM / RAM, magnetic disk, or optical disk, and includes several instructions that cause a terminal device (which may be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in each embodiment of the present application.

[0122] The foregoing are merely preferred embodiments of the present application and do not thereby limit the scope of protection. For the same reasons, uniform structural or uniform flow transformations, or direct or indirect applications to other related technical fields, made using the contents of the specification and drawings of the present application are included within the scope of protection of the patent of the present application.

Claims

1. The steps include: when the air conditioner starts the preset defrost mode, obtaining the temperature of the first indoor heat exchanger of the air conditioner; The steps include adjusting the rotation speed of the indoor fan of the air conditioner according to the temperature of the first indoor heat exchanger such that the adjusted rotation speed of the indoor fan is greater than the first target rotation speed corresponding to the preset defrosting mode, The steps include controlling the indoor fan to adjust and operate at the first target rotational speed when the air conditioner satisfies the first preset conditions, A method for controlling an air conditioner, including the control method itself.

2. The step of adjusting the rotation speed of the indoor fan of the air conditioner according to the temperature of the first indoor heat exchanger is, The steps include determining a rotation speed adjustment value according to the temperature of the first indoor heat exchanger, The steps include increasing the reference rotational speed according to the rotational speed adjustment value to obtain a first rotational speed greater than the first target rotational speed, The procedure includes the step of controlling the indoor fan to operate at the first rotational speed. The method for controlling an air conditioner according to claim 1.

3. The first target rotational speed is zero rotational speed, and the step of controlling the indoor fan to operate at the first target rotational speed is: The steps include controlling the indoor fan to operate at a preset rate, reducing its rotational speed to the lowest rotational speed corresponding to the preset defrosting mode, which is greater than the zero rotational speed, The step includes controlling the indoor fan to shut down the air conditioner when it satisfies a second preset condition. The method for controlling an air conditioner according to claim 1.

4. After the step of controlling the indoor fan to operate at a preset rate, reducing its rotational speed to the lowest rotational speed corresponding to the preset defrosting mode, The steps include obtaining the total time from the time when the air conditioner satisfies the first preset condition to the current time, The process further includes the step of determining that the air conditioner has met a second preset condition when the total time reaches a first preset time. The method for controlling an air conditioner according to claim 3.

5. The preset defrost mode is a first defrost mode, and when the air conditioner starts the preset defrost mode, before the step of obtaining the temperature of the first indoor heat exchanger of the air conditioner, The steps include controlling the air conditioner to operate in heating mode, The steps include controlling the air conditioner to start the first defrost mode when the air conditioner satisfies the first starting conditions corresponding to the first defrost mode, The steps include controlling the air conditioner to start the second defrost mode when the air conditioner satisfies the second starting conditions corresponding to the second defrost mode, and adjusting the operating rotation speed of the indoor fan according to the temperature of the air conditioner's second indoor heat exchanger and / or the outdoor ambient temperature corresponding to the air conditioner until exiting the second defrost mode, The method further includes the steps of controlling the air conditioner to start the third defrost mode when the air conditioner satisfies a third starting condition corresponding to the third defrost mode, and controlling the indoor fan to operate while maintaining the current rotation speed, The frost thickness corresponding to the first defrosting mode is greater than the frost thickness corresponding to the second defrosting mode, and the frost thickness corresponding to the first defrosting mode is less than the frost thickness corresponding to the third defrosting mode, and the air conditioner is in a heating state in the first and second defrosting modes, and the air conditioner is in a cooling state in the third defrosting mode. A method for controlling an air conditioner according to any one of claims 1 to 4.

6. After the step of controlling the air conditioner to operate in heating mode, The steps include obtaining the exhaust characteristic value of the air conditioner's compressor and the ambient temperature corresponding to the air conditioner, The step further includes determining whether the air conditioner satisfies the first starting condition, the second starting condition, or the third starting condition based on the exhaust characteristic value and the ambient temperature. The method for controlling an air conditioner according to claim 5.

7. The exhaust characteristic value includes the exhaust temperature value and the exhaust temperature change value, and the ambient temperature includes the indoor ambient temperature and the outdoor ambient temperature. The first starting condition includes the exhaust temperature value being less than a first preset temperature, the exhaust temperature change value being greater than a first preset value, the outdoor ambient temperature being less than a first preset outdoor temperature, and the indoor ambient temperature being greater than a first preset indoor temperature. The second starting condition includes the exhaust temperature value being less than the second preset temperature, the exhaust temperature change value being greater than the second preset value, the outdoor ambient temperature being less than the second preset outdoor temperature, and the indoor ambient temperature being greater than the second preset indoor temperature. The third starting condition includes the exhaust temperature value being less than the third preset temperature, the exhaust temperature change value being greater than the third preset value, the outdoor ambient temperature being less than the third preset outdoor temperature, and the indoor ambient temperature being greater than the third preset indoor temperature. The second preset value is smaller than the first preset value, the first preset value is smaller than the third preset value, the second preset temperature is greater than or equal to the first preset temperature, the first preset temperature is greater than or equal to the third preset temperature, the second preset outdoor temperature is greater than or equal to the first preset outdoor temperature, the first preset outdoor temperature is greater than the third preset outdoor temperature, the second preset indoor temperature is greater than or equal to the first preset indoor temperature, and the first preset indoor temperature is greater than or equal to the third preset indoor temperature. The method for controlling an air conditioner according to claim 6.

8. The step of determining a second target rotational speed of the indoor fan according to the outdoor ambient temperature corresponding to the air conditioner is: If the outdoor ambient temperature is below the second preset ambient temperature, the first preset rotation speed is determined as the second target rotation speed. The process includes the step of determining the second preset rotational speed as the second target rotational speed if the outdoor ambient temperature is greater than the second preset ambient temperature, The first preset rotation speed is smaller than the second preset rotation speed. The method for controlling an air conditioner according to claim 5.

9. After the step of controlling the air conditioner to start the second defrosting mode, The steps include: acquiring the operating state of a temperature sensor corresponding to the outdoor ambient temperature; If the aforementioned operating state is a malfunction state, and if there is temperature data detected by the temperature sensor before the current time, the step of determining the outdoor ambient temperature based on the temperature data and adjusting the operating rotation speed of the indoor fan according to the outdoor ambient temperature corresponding to the air conditioner is performed. If the aforementioned operating state is a malfunction state, and there is no temperature data detected by the temperature sensor prior to the current time, the indoor fan is controlled to operate at the minimum rotational speed corresponding to the second defrosting mode, further comprising the step of controlling the indoor fan to operate at the minimum rotational speed corresponding to the second defrosting mode. The method for controlling an air conditioner according to claim 8.

10. The upper limit of the rotational speed of the indoor fan during operation after the start of the first defrosting mode, the second defrosting mode, or the third defrosting mode is less than or equal to the minimum rotational speed corresponding to the heating mode. The method for controlling an air conditioner according to claim 5.

11. After the step of controlling the air conditioner to operate in heating mode, The steps include controlling the air guide plate of the air outlet of the air conditioner to operate while maintaining its current angle when the air conditioner starts the first defrosting mode or the second defrosting mode, The step of controlling the air guide plate to operate at a cold air prevention angle when the air conditioner starts the third defrosting mode is further included The method for controlling an air conditioner according to claim 5.

12. After the step of controlling the air conditioner to operate in heating mode, The steps include controlling an electric auxiliary heating module provided in the indoor unit of the air conditioner so that it turns on when the air conditioner starts the second defrosting mode, The step further includes controlling the electric auxiliary heating module to turn off when the air conditioner starts the first defrost mode or the third defrost mode. The method for controlling an air conditioner according to claim 5.

13. The step of controlling the electric auxiliary heating module provided in the indoor unit of the air conditioner to turn on when the air conditioner starts the second defrosting mode is: When the air conditioner starts the second defrosting mode, the step of obtaining the outdoor ambient temperature corresponding to the air conditioner, The procedure includes the step of controlling the electric auxiliary heating module to turn on if the outdoor ambient temperature is below a first preset ambient temperature. The method for controlling an air conditioner according to claim 12.

14. An air conditioner comprising memory, a processor, and an air conditioner control program stored in the memory and executable on the processor, When the control program for the air conditioner is executed by the processor, it realizes the steps of the air conditioner control method described in any one of claims 1 to 13. Air conditioner.

15. If an air conditioner control program is stored and the air conditioner control program is executed by the processor, the steps of the air conditioner control method described in any one of claims 1 to 13 are realized. storage medium.

Images