Air conditioner control method and device, air conditioner and storage medium

Abstract

The invention discloses an air conditioner control method and device, an air conditioner and a storage medium, and the method comprises the steps that in a refrigeration mode, the outdoor environment temperature is obtained; under the condition that the outdoor environment temperature is smaller than a first temperature threshold value, operation information of a working assembly in the air conditioner is obtained, and the operation information of the working assembly comprises current temperature information of a heat exchanger and current rotating speed information of a draught fan; the operation frequency of a compressor or the operation rotating speed of a fan is controlled according to the operation information of the working assembly, so that the temperature of the indoor heat exchanger is increased; according to the control method, the compressor or the fan can be controlled to operate according to the operation information of the air conditioner assemblies such as the heat exchanger and the fan under the condition of outdoor low temperature, so that the temperature of the indoor heat exchanger is increased, frosting of the indoor heat exchanger is avoided, and then the operation stability of the air conditioner and the use experience of a user are improved.

Description

Technical Field

[0001] This application relates to the field of air conditioner control technology, and in particular to an air conditioner control method, device, air conditioner, and storage medium. Background Technology

[0002] Currently, under centralized heating in winter, indoor temperatures can reach over 30°C, while outdoor temperatures can drop below 0°C or even lower. Under such temperature differences, users need to use air conditioners to maintain a comfortable indoor temperature. However, in ultra-low temperature environments, when the outdoor temperature drops below a certain value, the indoor heat exchanger will frost over due to the temperature falling below 0°C. This affects the air conditioner's cooling performance and causes indoor temperature fluctuations, leading to frequent activation of the low-temperature protection mechanism. Consequently, the air conditioner's cooling output becomes unstable, resulting in poor cooling performance and negatively impacting the user experience. Summary of the Invention

[0003] The purpose of this application is to at least solve one of the technical problems existing in the prior art, and to provide a control method, device, air conditioner and storage medium for an air conditioner, which can control the operation of the compressor or fan according to the operating information of air conditioner components such as heat exchangers and fans when the outdoor temperature is low, so as to increase the temperature of the indoor heat exchanger, avoid the indoor heat exchanger from frosting, and thus improve the operating stability of the air conditioner and the user experience.

[0004] In a first aspect, embodiments of this application provide a control method for an air conditioner, comprising: in a cooling mode, acquiring an outdoor ambient temperature; when the outdoor ambient temperature is less than a first temperature threshold, acquiring operating information of a working component in the air conditioner, the operating information of the working component including current temperature information of a heat exchanger and current speed information of a fan; and controlling the operating frequency of a compressor or the operating speed of the fan according to the operating information of the working component to increase the temperature of the indoor heat exchanger.

[0005] The air conditioner control method provided in the embodiments of this application has at least the following beneficial effects: In cooling mode, this application can acquire the outdoor ambient temperature; when the outdoor ambient temperature is lower than a first temperature threshold, it acquires the operating information of the working components in the air conditioner, including the current temperature information of the heat exchanger and the current speed information of the fan; based on the operating information of the working components, it controls the operating frequency of the compressor or the operating speed of the fan to increase the temperature of the indoor heat exchanger; it is understood that the outdoor ambient temperature can be measured by a temperature sensor installed outside the air conditioner, and the outdoor ambient temperature is an indicator for determining whether to enter the ultra-low temperature cooling mode. The first temperature threshold is used to determine whether to enter the ultra-low temperature cooling mode. When the outdoor ambient temperature is lower than the first temperature threshold, the system will enter ultra-low temperature cooling. The system can obtain the current temperature of the heat exchanger by a temperature sensor installed near the heat exchanger, and the current speed of the fan by monitoring the fan's operating status. Based on the current temperature and fan speed information, the air conditioner will adjust the compressor's operating frequency or the fan's operating speed. Furthermore, when the indoor heat exchanger temperature is low, the airflow can be increased by increasing the indoor fan speed to increase heat exchange, or the refrigerant flow can be reduced by decreasing the compressor's operating frequency to reduce the cooling capacity of the indoor heat exchanger. This effectively increases the temperature of the indoor heat exchanger, ensuring the air conditioner's cooling capacity while avoiding frequent defrosting of the indoor unit, which causes intermittent cooling output and indoor temperature fluctuations. This ensures the air conditioner's operational stability and the user experience.

[0006] According to some embodiments of the present application, the control method for an air conditioner includes the current temperature information of the heat exchanger (including the current temperature of the outdoor heat exchanger) and the current speed information of the fan (including the current speed of the outdoor fan). Controlling the operating frequency of the compressor or the operating speed of the fan based on the operating information of the working components includes: when the current temperature of the outdoor heat exchanger is less than a second temperature threshold, controlling the operating speed of the fan based on the current temperature information of the heat exchanger and the current speed information of the fan; and when the current temperature of the outdoor heat exchanger is greater than or equal to the second temperature threshold, controlling the operating speed of the outdoor fan to increase or the operating frequency of the compressor to decrease based on the current speed of the outdoor fan.

[0007] According to some embodiments of the present application, the current temperature information of the heat exchanger further includes the current temperature of the indoor heat exchanger. Controlling the operating speed of the fan based on the current temperature information of the heat exchanger and the current speed information of the fan includes: controlling the operating speed of the fan based on the current temperature of the indoor heat exchanger and the current speed information of the fan when the current temperature of the outdoor heat exchanger is greater than a third temperature threshold; and determining that the indoor heat exchanger is in a first frosting state when the current temperature of the outdoor heat exchanger is less than or equal to the third temperature threshold, so as to control the operating speed of the outdoor fan to decrease or stop based on the current speed of the outdoor fan.

[0008] According to some embodiments of the present application, the control method for an air conditioner includes an inlet temperature, a middle temperature, and an outlet temperature of the indoor heat exchanger. Controlling the operating speed of the fan based on the current temperature of the indoor heat exchanger and the current speed information of the fan includes: determining the frosting state of the indoor heat exchanger based on the inlet temperature, middle temperature, and outlet temperature; and controlling the operating speed of the fan based on the frosting state and the current speed information of the fan.

[0009] According to some embodiments of the present application, the method for controlling an air conditioner, wherein determining the frosting state of the indoor heat exchanger based on the inlet temperature, middle temperature, and outlet temperature of the indoor heat exchanger includes: determining the indoor heat exchanger to be in a second frosting state when the inlet temperature of the indoor heat exchanger is less than a fourth temperature threshold; and determining the indoor heat exchanger to be in a third frosting state when the inlet temperature of the indoor heat exchanger is greater than or equal to the fourth temperature threshold, if the middle temperature of the indoor heat exchanger is less than a fifth temperature threshold, or if the outlet temperature of the indoor heat exchanger is less than a sixth temperature threshold.

[0010] According to some embodiments of the present application, the control method for an air conditioner includes the operating information of the working components, which further includes the current opening degree of the expansion valve. After determining that the indoor heat exchanger is in a second frosting state, the method further includes: when the current opening degree of the expansion valve is less than a preset upper limit value, controlling the operating opening degree of the expansion valve to increase; and when the current opening degree of the expansion valve is equal to the upper limit value, controlling the operating speed of the outdoor fan to decrease or stop according to the current speed of the outdoor fan.

[0011] According to some embodiments of the air conditioner control method provided in this application, the current speed information of the fan also includes the current speed of the indoor fan. After determining that the indoor heat exchanger is in a third frosting state, the method further includes: when the operating speed of the indoor fan is less than a preset upper limit of indoor speed, controlling the operating speed of the indoor fan to increase according to the current speed of the indoor fan; when the operating speed of the indoor fan is equal to the upper limit of indoor speed, determining that the indoor heat exchanger is in a second frosting state, so as to control the expansion valve or the outdoor fan based on the current opening degree.

[0012] According to some embodiments of the present application, the control method for an air conditioner, wherein controlling the operating speed of the outdoor fan to increase or the operating frequency of the compressor to decrease based on the current speed of the outdoor fan, includes: increasing the operating speed of the outdoor fan when the current speed of the outdoor fan is less than a preset upper limit value for outdoor speed; and decreasing the operating frequency of the compressor when the current speed of the outdoor fan is equal to the upper limit value for outdoor speed.

[0013] According to some embodiments of the present application, the control method for an air conditioner, when the outdoor ambient temperature is less than a first temperature threshold, further includes: obtaining operating restriction information of the working components in the air conditioner, the operating restriction information of the working components including the upper limit value of the compressor frequency and the upper limit value of the fan speed; and controlling the operation of the working components according to the operating restriction information.

[0014] In a second aspect, embodiments of this application provide an operation control device, including a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, it implements the control method for an air conditioner as described in any embodiment of the first aspect.

[0015] The operation control device provided in the embodiments of this application has at least the following beneficial effects: Based on the operation control device, the outdoor ambient temperature can be obtained in cooling mode; when the outdoor ambient temperature is less than a first temperature threshold, the operation information of the working components in the air conditioner can be obtained, including the current temperature information of the heat exchanger and the current speed information of the fan; the operating frequency of the compressor or the operating speed of the fan can be controlled according to the operating information of the working components to increase the temperature of the indoor heat exchanger. In the case of low outdoor temperature, the operation of the compressor or fan can be controlled according to the operating information of the air conditioner components such as the heat exchanger and the fan to increase the temperature of the indoor heat exchanger, avoid frost formation on the indoor heat exchanger, and thus improve the operation stability of the air conditioner and the user experience.

[0016] Thirdly, embodiments of this application provide an air conditioner including an operation control device as described in any embodiment of the second aspect.

[0017] The air conditioner provided according to the embodiments of this application has at least the following beneficial effects: Based on the operation control device in the air conditioner, the outdoor ambient temperature can be obtained in cooling mode; when the outdoor ambient temperature is less than a first temperature threshold, the operation information of the working components in the air conditioner can be obtained, including the current temperature information of the heat exchanger and the current speed information of the fan; the operating frequency of the compressor or the operating speed of the fan can be controlled according to the operating information of the working components to increase the temperature of the indoor heat exchanger. In the case of low outdoor temperature, the compressor or fan can be controlled to operate according to the operating information of the air conditioner components such as the heat exchanger and the fan to increase the temperature of the indoor heat exchanger, avoid frost formation on the indoor heat exchanger, and thus improve the operation stability of the air conditioner and the user experience.

[0018] Fourthly, embodiments of this application provide a computer-readable storage medium storing computer-executable instructions for causing a computer to perform the control method as described in any of the embodiments of the first aspect.

[0019] The computer-readable storage medium provided according to the embodiments of this application has at least the following beneficial effects: Based on the computer-executable instructions stored in the computer-readable storage medium, it is possible to obtain the outdoor ambient temperature in cooling mode; when the outdoor ambient temperature is less than a first temperature threshold, obtain the operating information of the working components in the air conditioner, including the current temperature information of the heat exchanger and the current speed information of the fan; control the operating frequency of the compressor or the operating speed of the fan according to the operating information of the working components to increase the temperature of the indoor heat exchanger. In the case of low outdoor temperature, the compressor or fan can be controlled to operate according to the operating information of the air conditioner components such as the heat exchanger and the fan to increase the temperature of the indoor heat exchanger, avoid frost formation on the indoor heat exchanger, and thus improve the operating stability of the air conditioner and the user experience. Attached Figure Description

[0020] The accompanying drawings are used to provide a further understanding of the technical solutions of this application and constitute a part of the specification. They are used together with the embodiments of this application to explain the technical solutions of this application and do not constitute a limitation on the technical solutions of this application.

[0021] The present application will be further described below with reference to the accompanying drawings and embodiments;

[0022] Figure 1 This is a flowchart illustrating the method steps of the air conditioner control method provided in the embodiments of this application;

[0023] Figure 2 This is a flowchart illustrating the steps of a method for determining a temperature threshold in the control method of an air conditioner provided in this application embodiment.

[0024] Figure 3 This is a flowchart illustrating the steps of a method for determining a temperature threshold in the control method of an air conditioner provided in this application embodiment.

[0025] Figure 4 This is a flowchart illustrating the steps of controlling an air conditioner based on the frosting state, as provided in the embodiments of this application.

[0026] Figure 5 This is a flowchart illustrating the steps of determining the frosting state in the air conditioner control method provided in this application embodiment;

[0027] Figure 6 This is a flowchart illustrating the steps of controlling the operating opening of the expansion valve in the air conditioner control method provided in this application embodiment;

[0028] Figure 7 This is a flowchart illustrating the steps of controlling the operating speed of a fan in the air conditioner control method provided in this application embodiment;

[0029] Figure 8 This is a flowchart illustrating the steps of controlling an air conditioner based on the upper limit of the outdoor speed, as provided in the embodiments of this application.

[0030] Figure 9 This is a step diagram illustrating an example of the control method for an air conditioner provided in an embodiment of this application;

[0031] Figure 10 This is a schematic diagram of an operation control device provided in an embodiment of this application. Detailed Implementation

[0032] This section will describe in detail the specific embodiments of this application. Preferred embodiments of this application are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of this application, but they should not be construed as limiting the scope of protection of this application.

[0033] In the description of the embodiments of this application, "several" means one or more, "multiple" means two or more, "greater than," "less than," "exceeding," etc. are understood to exclude the stated number, while "above," "below," "within," etc. are understood to include the stated number. "At least one" refers to one or more, and "at least one of the following" and similar expressions refer to any combination of these items, including any combination of single or multiple items. If "first," "second," etc., are used in the description, they are only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the order of the indicated technical features.

[0034] It should be noted that the terms "setting," "installing," and "connecting" in the embodiments of this application should be interpreted broadly. Those skilled in the art can reasonably determine the specific meaning of the above terms in the embodiments of this application based on the specific content of the technical solution. For example, the term "connection" can be a mechanical connection, an electrical connection, or a connection that allows for mutual communication; it can be a direct connection or an indirect connection through an intermediate medium.

[0035] It should be noted that the technical features involved in the various embodiments of this application described below can be combined with each other as long as they do not conflict with each other.

[0036] Currently, under centralized heating in winter, indoor temperatures can reach over 30°C, while outdoor temperatures can drop below 0°C or even lower. Under such temperature differences, users need to use air conditioners to maintain a comfortable indoor temperature. However, in ultra-low temperature environments, when the outdoor temperature drops below a certain value, the indoor heat exchanger will frost over due to the temperature falling below 0°C. This affects the air conditioner's cooling performance and causes indoor temperature fluctuations, leading to frequent activation of the low-temperature protection mechanism. Consequently, the air conditioner's cooling output becomes unstable, resulting in poor cooling performance and negatively impacting the user experience.

[0037] Based on this, this application discloses a control method, device, air conditioner, and storage medium for an air conditioner. The method includes acquiring the outdoor ambient temperature in cooling mode; when the outdoor ambient temperature is lower than a first temperature threshold, acquiring the operating information of the working components in the air conditioner, including the current temperature information of the heat exchanger and the current speed information of the fan; and controlling the operating frequency of the compressor or the operating speed of the fan according to the operating information of the working components to increase the temperature of the indoor heat exchanger. This application can control the operation of the compressor or fan according to the operating information of air conditioner components such as the heat exchanger and fan when the outdoor temperature is low, thereby increasing the temperature of the indoor heat exchanger, preventing frost formation on the indoor heat exchanger, and thus improving the operational stability of the air conditioner and the user experience.

[0038] The embodiments of this application will be further described below with reference to the accompanying drawings.

[0039] Reference Figure 1 , Figure 1 This is a flowchart illustrating the steps of a control method for an air conditioner provided in an embodiment of this application; In a first aspect, an embodiment of this application provides a control method for an air conditioner, including but not limited to the following steps:

[0040] Step S110: In cooling mode, obtain the outdoor ambient temperature;

[0041] Step S120: When the outdoor ambient temperature is lower than the first temperature threshold, obtain the operating information of the working components in the air conditioner. The operating information of the working components includes the current temperature information of the heat exchanger and the current speed information of the fan.

[0042] Step S130: Control the operating frequency of the compressor or the operating speed of the fan according to the operating information of the working components to increase the temperature of the indoor heat exchanger.

[0043] It can be understood that, corresponding to steps S110 to S120 above, the outdoor ambient temperature can be measured by a temperature sensor installed outside the air conditioner. The outdoor ambient temperature is an indicator for determining whether to enter the ultra-low temperature cooling mode. A first temperature threshold is used to determine whether to enter the ultra-low temperature cooling mode. When the outdoor ambient temperature is lower than the first temperature threshold, the system will enter the ultra-low temperature cooling mode. The current temperature of the heat exchanger can be obtained by a temperature sensor installed near the heat exchanger, and the current speed of the fan can be obtained by monitoring the operating status of the fan. Based on the current temperature information of the heat exchanger and the current speed information of the fan, the air conditioner will adjust the operating frequency of the compressor or the operating speed of the fan. Therefore, when the temperature of the indoor heat exchanger is low, the air flow rate can be increased by increasing the speed of the indoor fan to increase the heat exchange, or the refrigerant flow can be reduced by decreasing the operating frequency of the compressor to reduce the cooling capacity of the indoor heat exchanger. This can effectively increase the temperature of the indoor heat exchanger, so as to ensure the cooling capacity of the air conditioner while avoiding the problem of frequent defrosting of the indoor unit caused by frost, which causes intermittent cooling output and indoor temperature fluctuations. This ensures the operational stability of the air conditioner and the user experience.

[0044] In some embodiments, when the air conditioner is in cooling mode, the system detects the outdoor ambient temperature, which can be achieved by a temperature sensor installed outside the air conditioner. When the outdoor ambient temperature is detected to be lower than a first temperature threshold, the system further obtains the operating information of key components in the air conditioner (such as heat exchangers and fans). The current temperature information of the heat exchanger includes the current temperature of the outdoor heat exchanger or the indoor heat exchanger, which can be measured by a temperature sensor installed near the heat exchanger. The current speed information of the fan includes the current speed of the outdoor fan or the indoor fan, which can be obtained by monitoring the operating status of the fan. Then, based on the current operating status of the heat exchanger and the fan, the operating frequency of the compressor or the speed of the fan can be adjusted to increase the temperature of the indoor heat exchanger and prevent frost formation.

[0045] Reference Figure 2 , Figure 2 This is a flowchart illustrating the steps of a control method for an air conditioner provided in this application, specifically a method for determining a second temperature threshold. In some embodiments, the current temperature information of the heat exchanger includes the current temperature of the outdoor heat exchanger, and the current speed information of the fan includes the current speed of the outdoor fan. The operating frequency of the compressor or the operating speed of the fan is controlled based on the operating information of the working components, including but not limited to the following steps:

[0046] Step S210: When the current temperature of the outdoor heat exchanger is less than the second temperature threshold, control the operating speed of the fan according to the current temperature information of the heat exchanger and the current speed information of the fan.

[0047] In step S220, if the current temperature of the outdoor heat exchanger is greater than or equal to the second temperature threshold, the operating speed of the outdoor fan is increased or the operating frequency of the compressor is decreased according to the current speed of the outdoor fan.

[0048] In some embodiments, if the temperature of the outdoor heat exchanger is lower than the second temperature threshold, it indicates that the outdoor heat exchange is sufficient and meets the current cooling demand of the system. The system will then control the fan speed based on the heat exchanger temperature and fan speed information to prevent frosting. If the temperature of the outdoor heat exchanger is not lower than the second temperature threshold, it indicates that the outdoor heat exchange is insufficient and cannot meet the cooling demand. The system will then adjust the outdoor fan speed or reduce the compressor operating frequency based on the current outdoor fan speed to improve the heat exchange effect. It can be understood that the second temperature threshold is a preset threshold for the outdoor heat exchanger outlet temperature, used to determine whether the outdoor heat exchange is sufficient. If the temperature of the outdoor heat exchanger is lower than the second temperature threshold... If the temperature threshold is met, it indicates sufficient heat exchange. Therefore, the fan speed needs to be controlled based on the current temperature information of the heat exchanger and the current fan speed. Conversely, if heat exchange is insufficient, the outdoor fan speed needs to be increased based on its current speed to ensure sufficient heat exchange. This prevents the air conditioner from frequently triggering low-temperature protection after the indoor heat exchanger frosts, which would cause large fluctuations in cooling output and indoor temperature. This ensures the air conditioner's cooling capacity and operational stability. Alternatively, it can determine if the outdoor unit speed has reached its maximum limit. If so, the compressor's operating frequency can be reduced to decrease the fan's heat dissipation load and prevent frost formation caused by a drop in indoor heat exchanger speed.

[0049] Reference Figure 3 , Figure 3 This is a flowchart illustrating the steps of a control method for an air conditioner provided in this application, specifically a method for determining a temperature threshold. In some embodiments, the current temperature information of the heat exchanger also includes the current temperature of the indoor heat exchanger. The operating speed of the fan is controlled based on the current temperature information of the heat exchanger and the current speed information of the fan, including but not limited to the following steps:

[0050] Step S310: If the current temperature of the outdoor heat exchanger is greater than the third temperature threshold, control the operating speed of the fan according to the current temperature of the indoor heat exchanger and the current speed information of the fan.

[0051] Step S320: If the current temperature of the outdoor heat exchanger is less than or equal to the third temperature threshold, the indoor heat exchanger is determined to be in the first frosting state, so as to control the operating speed of the outdoor fan to be reduced or stopped according to the current speed of the outdoor fan.

[0052] In some embodiments, when the current temperature of the outdoor heat exchanger is higher than the third temperature threshold, it means that at this temperature, even if the electronic expansion valve is at its maximum opening, the temperature of the refrigerant after throttling will not cause the indoor unit to frost. At this time, the system will control the operating speed of the fan according to the current temperature of the indoor heat exchanger and the current speed information of the fan. That is, by adjusting the speed of the fan, the speed and direction of airflow can be changed to reduce the airflow velocity through the indoor heat exchanger, thereby increasing the temperature of the indoor heat exchanger and preventing it from being too low to cause frost.

[0053] In some embodiments, when the current temperature of the outdoor heat exchanger is lower than or equal to the third temperature threshold, the indoor heat exchanger is determined to be in the first frosting state. This means that even at the maximum allowable opening of the electronic expansion valve, the temperature of the refrigerant after throttling will still cause the indoor unit to frost. The system will reduce the operating speed of the outdoor fan or even stop the outdoor fan completely based on the current speed information of the outdoor fan. That is, by reducing the speed of the outdoor fan or stopping its operation, the cooling rate of the indoor heat exchanger can be reduced, thereby increasing the outlet temperature of the indoor heat exchanger, slowing down the rate of temperature drop of the indoor heat exchanger, and preventing its temperature from being too low to cause frosting.

[0054] Reference Figure 4 , Figure 4 This is a flowchart illustrating the steps of a control method for an air conditioner based on a frosting state, provided in an embodiment of this application. In some embodiments, the current temperature of the indoor heat exchanger includes the inlet temperature, the middle temperature, and the outlet temperature. The operating speed of the fan is controlled based on the current temperature of the indoor heat exchanger and the current speed information of the fan, including but not limited to the following steps:

[0055] Step S410: Determine the frosting state of the indoor heat exchanger based on the inlet temperature, middle temperature, and outlet temperature of the indoor heat exchanger.

[0056] Step S420: Control the operating speed of the fan according to the frosting status and the current speed information of the fan.

[0057] In some embodiments, the current temperature of the indoor heat exchanger includes the inlet temperature, the middle temperature, and the outlet temperature. The temperatures at the inlet, middle, and outlet together reflect the overall operating status of the heat exchanger. By monitoring the temperatures at these three locations, more comprehensive information can be obtained to accurately determine the risk of frosting on the indoor heat exchanger. Therefore, this application can determine whether the indoor heat exchanger is in a frosting state based on the inlet, middle, and outlet temperatures. If the frosting state of the indoor heat exchanger is determined, the system will adjust the operating speed of the fan according to the current fan speed information. By increasing or decreasing the fan speed, the airflow velocity through the indoor heat exchanger is changed, thereby affecting the temperature of the indoor heat exchanger and preventing frosting from occurring.

[0058] Reference Figure 5 , Figure 5 This is a flowchart illustrating the steps of determining the frosting state in the air conditioner control method provided in this application embodiment; in some embodiments, the frosting state of the indoor heat exchanger is determined based on the inlet temperature, middle temperature, and outlet temperature of the indoor heat exchanger, including but not limited to the following steps:

[0059] Step S510: If the inlet temperature of the indoor heat exchanger is less than the fourth temperature threshold, the indoor heat exchanger is determined to be in the second frosting state.

[0060] In step S520, if the inlet temperature of the indoor heat exchanger is greater than or equal to the fourth temperature threshold, and the middle temperature of the indoor heat exchanger is less than the fifth temperature threshold, or if the outlet temperature of the indoor heat exchanger is less than the sixth temperature threshold, then the indoor heat exchanger is determined to be in the third frosting state.

[0061] In some embodiments, if the inlet temperature of the indoor heat exchanger is lower than a fourth temperature threshold, the system considers the indoor heat exchanger to be in a second frosting state. The fourth temperature threshold is a preset temperature value used to determine whether the inlet temperature is too low and may cause frosting. If the inlet temperature is lower than this threshold, it is considered that there is a risk of frosting. If the inlet temperature of the indoor heat exchanger is greater than or equal to the fourth temperature threshold, and the middle temperature of the indoor heat exchanger is lower than a fifth temperature threshold, or the outlet temperature of the indoor heat exchanger is lower than a sixth temperature threshold, the indoor heat exchanger is determined to be in a third frosting state. That is, if the inlet temperature is not lower than the fourth temperature threshold, but the middle temperature is lower than the fifth temperature threshold, or the outlet temperature is lower than the sixth temperature threshold, the system considers the indoor heat exchanger to be in a third frosting state. The fifth and sixth temperature thresholds are two other preset temperature values ​​used to more accurately assess the possibility of frosting.

[0062] In some embodiments, after reading the outdoor heat exchanger outlet temperature T3, the indoor heat exchanger inlet temperature Ti, the indoor heat exchanger middle temperature T2, and the indoor heat exchanger outlet temperature To, the temperature value Ti of the refrigerant entering the indoor heat exchanger after refrigerant throttling can be determined. If Ti < the fourth temperature threshold C4 (at which the indoor heat exchanger is frosted), the indoor heat exchanger is determined to be in the second frosting state with a high risk of frosting, so as to perform subsequent electronic expansion valve opening and outdoor unit speed control. If Ti ≥ the fourth temperature threshold C4, it is in the third frosting state with a low risk of frosting, and further judgment is required.

[0063] Reference Figure 6 , Figure 6This application provides a control method for an air conditioner, including a step diagram of controlling the operating opening of the expansion valve. In some embodiments, the operating information of the working components also includes the current opening of the expansion valve. After determining that the indoor heat exchanger is in a second frosting state, the method further includes, but is not limited to, the following steps:

[0064] Step S610: If the current opening of the expansion valve is less than the preset upper limit of the opening, control the operating opening of the expansion valve to increase.

[0065] Step S620: When the current opening degree of the expansion valve is equal to the upper limit of the opening degree, control the operating speed of the outdoor fan to decrease or stop according to the current speed of the outdoor fan.

[0066] In some embodiments, the current opening degree of the expansion valve refers to the extent to which the expansion valve is open, which affects the refrigerant flow rate and thus the temperature of the heat exchanger. By adjusting the opening degree of the expansion valve, the refrigerant flow rate can be regulated, thereby affecting the temperature of the indoor heat exchanger and preventing frost formation. If the current opening degree of the expansion valve is less than a preset upper limit value, then in this embodiment, the opening degree of the expansion valve can be increased. Increasing the opening degree of the expansion valve can increase the refrigerant flow rate and raise the temperature of the indoor heat exchanger, preventing frost formation. Furthermore, if the expansion valve has reached the maximum permissible opening degree, the system will reduce the operating speed of the outdoor fan or completely stop the outdoor fan based on the current speed of the outdoor fan. By reducing the speed of the outdoor fan or stopping its operation, the cooling rate of the indoor heat exchanger can be slowed down, thereby preventing frost formation.

[0067] It is understood that, through the above embodiments, the air conditioner in this application can control the temperature of the indoor heat exchanger by adjusting the electronic expansion valve when the outdoor fan is off and the indoor heat exchanger is still icy (in the second frosting state). Thus, when the current opening degree of the expansion valve is equal to the upper limit of the opening degree, the electronic expansion valve can be fully opened without throttling effect. Furthermore, by controlling the outdoor fan, sensible heat exchange between high and low temperature zones is achieved. This allows the refrigerant in the air conditioner's refrigeration system to act as a heat transfer fluid, with the compressor used to transport the refrigerant. That is, the compressor acts as a liquid transport pump, its role being to transport the low-temperature refrigerant from the outdoor side to the indoor side to absorb heat, and then enter the outdoor unit for cooling. This process mainly utilizes the sensible heat of the refrigerant, rather than the sensible heat + latent heat mode of traditional refrigeration methods, thereby cooling the indoor environment, ensuring the air conditioning cooling capacity, improving the operational stability of the air conditioner, and enhancing the user experience.

[0068] In some embodiments, it is determined whether the opening degree of the electronic expansion valve is at its maximum opening value. If it is not at its maximum opening value, i.e., the opening degree of the electronic expansion valve LA < the maximum opening value LAmax, the opening degree of the electronic expansion valve is increased to increase the Ti value, and the air conditioner returns to the initial low-temperature cooling state after running for t time. If the electronic expansion valve is at its maximum value, i.e., LA ≥ LAmax, it is determined whether the outdoor unit speed has reached the minimum limit value. If it has not reached the minimum limit value, i.e., the outdoor unit speed PA > the minimum limit value PAmin, the operating speed of the outdoor fan is reduced to reduce the heat exchange on the outside and thus increase the T3 temperature value, and the air conditioner returns to the initial low-temperature cooling state after running for t time. If the minimum limit value has been reached, i.e., PA ≤ PAmin, the outdoor fan is stopped to increase the T3 temperature value, and the air conditioner returns to the initial low-temperature cooling state after running for t time.

[0069] Reference Figure 7 , Figure 7 This is a flowchart illustrating the steps of controlling the operating opening of the expansion valve in the air conditioner control method provided in this application embodiment: In some embodiments, the current fan speed information also includes the current speed of the indoor fan. After determining that the indoor heat exchanger is in the third frosting state, the method further includes, but is not limited to, the following steps:

[0070] Step S710: If the operating speed of the indoor fan is less than the preset upper limit of the indoor fan speed, control the operating speed of the indoor fan to increase according to the current speed of the indoor fan.

[0071] Step S720: When the operating speed of the indoor fan is equal to the upper limit of the indoor speed, the indoor heat exchanger is determined to be in the second frosting state, so as to control the expansion valve or the outdoor fan based on the current opening.

[0072] In some embodiments, the current fan speed information also includes the current speed of the indoor fan. That is, in addition to the speed of the outdoor fan, the current speed of the indoor fan is also considered in this embodiment. By considering the speed information of both indoor and outdoor fans simultaneously, the operating status of the air conditioner can be controlled more comprehensively to address the risk of frosting. When it is determined that the indoor heat exchanger is in the third frosting state, the system will increase the operating speed of the indoor fan according to its current speed. By increasing the speed of the indoor fan, indoor air circulation can be accelerated, which helps to improve the heat exchange effect of the indoor heat exchanger, thereby avoiding frequent defrosting of the indoor unit caused by frosting while maintaining air quality. To verify the air conditioning cooling capacity; furthermore, if the indoor fan's operating speed is equal to the upper limit of the indoor speed, the indoor heat exchanger is determined to be in the second frosting state. Based on the current opening, the expansion valve or outdoor fan in the above embodiment is controlled. When the indoor speed reaches the maximum speed, the expansion valve is increased according to the opening of the expansion valve. When the expansion valve opening is at its maximum, the frosting state is determined again as the first frosting state, so as to control the outdoor fan speed to decrease or stop. Decreasing the outdoor fan speed or stopping its operation can reduce the cooling rate of the indoor heat exchanger, thereby slowing down the temperature drop rate of the indoor heat exchanger and preventing frosting.

[0073] Understandably, in the first frosting state, the first temperature threshold corresponding to this state can be 0 degrees Celsius. At 0 degrees Celsius, the temperature of the refrigerant after throttling through the expansion valve will definitely be lower than 0 degrees Celsius, indicating that the indoor heat exchanger will inevitably frost. The primary goal at this time is to prevent the indoor heat exchanger from frosting, so it is necessary to control the outdoor fan speed to reduce or stop it based on the current outdoor fan speed, thereby weakening the heat exchange effect and increasing the temperature of the indoor heat exchanger. In the second frosting state, it indicates that the indoor heat exchanger has a greater risk of frosting. The primary goal at this time is to prevent the indoor heat exchanger from frosting while ensuring the stable operation of the air conditioner. Therefore, when the indoor fan speed reaches its maximum speed, the electronic expansion valve is controlled according to the opening of the expansion valve to improve the operational stability of the air conditioner. In the third frosting state, it indicates that the indoor heat exchanger has a smaller risk of frosting. The primary goal at this time can be to prioritize ensuring the cooling capacity of the air conditioner. Therefore, the indoor fan speed can be increased based on the current indoor fan speed to improve the heat exchange effect of the indoor heat exchanger.

[0074] In some embodiments, when the indoor heat exchanger is determined to be in the third frosting state, the value of T2 can be determined. If T2 < the fifth temperature threshold C5, the indoor unit still has a risk of frosting. At this time, it is determined whether the indoor unit speed has reached the maximum limit value. That is, if the indoor unit speed has not reached the maximum limit value, i.e., the indoor unit speed EA < the maximum limit value EAmax, the indoor unit speed is increased and subsequent steps are performed. If T2 ≥ C5, the value of To at the indoor heat exchanger outlet can be determined. If To < the sixth temperature threshold C6, the indoor unit still has a risk of frosting. At this time, it is determined whether the indoor unit speed has reached the maximum limit value. If To ≥ C6, it is determined that the risk of frosting of the indoor unit is negligible. The current operating parameters can be maintained for the number of cycles. After running for time t, the air conditioner returns to the initial low-temperature cooling state.

[0075] In some embodiments, this application can be applied to an air conditioner equipped with a fresh air cooling system.

[0076] Reference Figure 8 , Figure 8 This is a flowchart illustrating the steps of a control method for an air conditioner provided in this application, where control is performed based on an upper limit value for the outdoor fan speed. In some embodiments, the operating speed of the outdoor fan is increased or the operating frequency of the compressor is decreased based on the current speed of the outdoor fan, including but not limited to the following steps:

[0077] Step S810: If the current speed of the outdoor fan is less than the preset upper limit of the outdoor speed, control the operating speed of the outdoor fan to increase.

[0078] In step S820, when the current speed of the outdoor fan is equal to the upper limit of the outdoor speed, the operating frequency of the compressor is reduced.

[0079] In some embodiments, if the current speed of the outdoor fan is lower than the preset maximum speed value (PA < PAmax), the system will increase the speed of the outdoor fan. This increases the heat dissipation efficiency of the outdoor heat exchanger, thereby affecting the heat exchange effect of the indoor heat exchanger. If the outdoor fan has already reached the maximum permissible speed value, the system will reduce the operating frequency of the compressor. This reduces the refrigerant flow rate, thereby slowing down the cooling rate of the indoor heat exchanger and preventing frost formation.

[0080] In some embodiments, when the outdoor ambient temperature is less than a first temperature threshold, the method further includes: obtaining operating limitation information of the working components in the air conditioner, the operating limitation information of the working components including the upper limit value of the compressor frequency and the upper limit value of the fan speed; controlling the operation of the working components according to the operating limitation information, wherein obtaining the operating limitation information of key components in the air conditioner, such as the upper limit value of the compressor frequency and the upper limit value of the fan speed, is intended to ensure that the air conditioner can operate stably in extreme low temperature environments and avoid frost formation on the indoor heat exchanger after the air conditioner enters the ultra-low temperature cooling mode.

[0081] Understandably, the initial operating frequency of the refrigeration system compressor and the operating speed of the indoor and outdoor fans are set when the cooling system starts to enable the air conditioner to effectively start the cooling cycle based on the current environmental conditions and the user-set target temperature. However, in ultra-low temperature cooling mode, the air conditioner faces a more severe working environment, requiring special control strategies to ensure system stability and safety. Among these, the upper limit of the frequency is used to limit the operating frequency of the compressor to reduce the cooling effect of the indoor heat exchanger, thereby increasing the temperature of the indoor heat exchanger. The upper limit of the speed is used to limit the operating speed of the indoor fan to reduce the heat exchange effect of the indoor heat exchanger, thereby increasing the temperature of the indoor heat exchanger. This can be used to maintain the temperature of the indoor heat exchanger, prevent frost formation, and ensure that the air conditioner can continuously and effectively cool.

[0082] It is conceivable that, after entering the ultra-low temperature cooling mode through the above embodiments and limiting the compressor operating frequency and fan operating speed, the indoor and outdoor heat exchanger temperatures can be monitored in real time, and the operating parameters can be controlled to further adjust the compressor operating frequency and fan operating speed, thereby ensuring that the indoor heat exchanger temperature is above 0°C and preventing the indoor heat exchanger from frosting in the cooling mode.

[0083] In some embodiments,

[0084] Reference Figure 9 , Figure 9 This is a step diagram illustrating an example of the control method for an air conditioner provided in this application; in some embodiments, corresponding to Figure 9 This application may include the following steps:

[0085] Power on: After the air conditioner is turned on, it enters cooling mode.

[0086] Cooling mode operation: Determine the cooling operation parameters based on the outdoor ambient temperature T1 and the indoor set temperature T5, and detect the temperature T4 of the indoor heat exchanger;

[0087] Determine if T4 is less than C1: If T4 is less than C1 (the first temperature threshold), then enter the ultra-low temperature cooling mode; if T4 is not less than C1, then continue with normal cooling operation.

[0088] Ultra-low temperature cooling mode: In ultra-low temperature cooling mode, the compressor frequency is limited by FACD, the indoor fan speed is limited by EACD, and the outdoor heat exchanger temperature T3, the indoor heat exchanger inlet temperature Ti, the middle temperature T2 and the outlet temperature To are obtained.

[0089] Determine if T3 is less than C2: If T3 is less than C2 (the second temperature threshold), proceed to the next step; if T3 is not less than C2, continue with normal cooling operation.

[0090] Determine if T3 is greater than C3: If T3 is greater than C3 (the third temperature threshold), proceed to the next step; if T3 is not greater than C3, continue with normal refrigeration operation.

[0091] Determine if Ti is less than C4: If Ti is less than C4 (the fourth temperature threshold), proceed to the next step; if Ti is not less than C4, continue with normal refrigeration operation.

[0092] Determine if T2 is greater than C5: If T2 is greater than C5 (the fifth temperature threshold), proceed to the next step; if T2 is not greater than C5, continue with normal refrigeration operation.

[0093] Determine if To is greater than C6: If To is greater than C6 (sixth temperature threshold), proceed to the next step; if To is not greater than C6, continue with normal cooling operation.

[0094] Determine if EA equals EAmx: If EA equals EAmx (maximum internal fan speed), proceed to the next step; if EA does not equal EAmx, continue with normal cooling operation.

[0095] Determine if PA is less than PAmx: If PA is less than PAmx (maximum compressor frequency), proceed to the next step; if PA is not less than PAmx, continue with normal refrigeration operation.

[0096] Where FA is the compressor frequency; LA is the electronic expansion valve opening; PA is the outdoor fan operating speed; EA is the indoor fan operating speed; T1 is the indoor ambient temperature; T2 is the indoor heat exchanger mid-section temperature; T3 is the outdoor heat exchanger outlet temperature; T4 is the outdoor ambient temperature; Ti is the indoor heat exchanger inlet temperature; To is the indoor heat exchanger outlet temperature; C is a constant value used for logical judgment, specifically, C1 is the first temperature threshold, C2 is the second temperature threshold, C3 is the third temperature threshold, C4 is the fourth temperature threshold, C5 is the fifth temperature threshold, C6 is the sixth temperature threshold, and C1 <c2>C3, C4 < C5 < C6, A1 to A5 are respectively the running parameter change values of the corresponding working components, and are all preset constants. Through the above Figure 9 The flow, the present application confirms that the user selects the air conditioner mode as the refrigeration mode, reads the current indoor temperature T1, the user sets the temperature Ts and the wind block, sets the initial running frequency of the refrigeration system compressor, the running speed of the indoor and outdoor fans, etc. After the air conditioner is started, it can avoid the frosting of the indoor heat exchanger in the ultra-low temperature environment by adjusting the compressor frequency, the running speed of the fan and the opening degree of the expansion valve and other parameters, and ensure the stable operation of the air conditioner.

[0097] Referring to Figure 10 , Figure 10 is a schematic diagram of the operation control device provided by the embodiment of the present application, and the second aspect, the embodiment of the present application provides an operation control device 1000, which comprises a memory 1010, a processor 1020, and a computer program stored in the memory 1010 and executable on the processor 1020. The processor 1020 executes the program to implement the control method of the air conditioner of the first aspect, for example, executes the method steps S110 to S130 in the method of Figure 1 , the method steps S210 to S220 in the method of Figure 2 , the method steps S310 to S320 in the method of Figure 3 , the method steps S410 to S420 in the method of Figure 4 , the method steps S510 to S520 in the method of Figure 5 , the method steps S610 to S620 in the method of Figure 6 , the method steps S710 to S720 in the method of Figure 7 , the method steps S810 to S820 in the method of Figure 8 .

[0098] The memory 1010 is a kind of non-transient computer readable storage medium, which can be used to store non-transient software programs and non-transient computer executable programs, such as the control method of the air conditioner in the above-mentioned embodiments of the present application. The processor 1020 runs the non-transient software program and instruction stored in the memory 1010, so as to realize the control method of the air conditioner in the above-mentioned embodiments of the present application.

[0099] The memory 1010 can include a program storage area and a data storage area, where the program storage area can store an operating system, at least one application required by a function, and the data storage area can store data required for executing the control method of the air conditioner in the above embodiments and the like. In addition, the memory 1010 can include a high-speed random access memory 1010, and can also include a non-transitory memory 1010, such as at least one disk memory 1010, a flash memory, or other non-transitory solid-state memory 1010. It should be noted that the memory 1010 can optionally include a memory 1010 disposed remotely with respect to the processor 1020, and these remote memories 1010 can be connected to the terminal through a network. Examples of the above network include but are not limited to the Internet, an intranet, a local area network, a mobile communication network, and a combination thereof.

[0100] In a third aspect, the embodiments of the present application provide an air conditioner, including the operation control device 1000 of the second aspect described above. Based on the operation control device in the air conditioner, the following can be achieved: in the cooling mode, the outdoor environment temperature is acquired; in the case that the outdoor environment temperature is less than a first temperature threshold, the operation information of the working assembly in the air conditioner is acquired, the operation information of the working assembly including the current temperature information of the heat exchanger and the current rotating speed information of the fan; and the operating frequency of the compressor or the operating rotating speed of the fan is controlled according to the operation information of the working assembly, so as to improve the temperature of the indoor heat exchanger. In the case of low outdoor temperature, the operation of the compressor or the fan can be controlled according to the operation information of the heat exchanger, the fan and other components of the air conditioner, so as to improve the temperature of the indoor heat exchanger, avoid frosting of the indoor heat exchanger, and further improve the operation stability of the air conditioner and the user experience.

[0101] In a fourth aspect, the embodiments of the present application provide a computer readable storage medium, and computer executable instructions are used to make a computer execute the control method of the air conditioner of the first aspect, for example, to execute the method steps S110-S130 in Figure 1 , the method steps S210-S220 in Figure 2 , the method steps S310-S320 in Figure 3 , the method steps S410-S420 in Figure 4 , the method steps S510-S520 in Figure 5 , the method steps S610-S620 in Figure 6 , the method steps S710-S720 in Figure 7 , and the method steps S810-S820 in Figure 8 .

[0102] It will be understood by those skilled in the art that all or some of the steps and systems in the methods disclosed above can be implemented as software, firmware, hardware, and suitable combinations thereof. Some or all of the physical components can be implemented as software executed by a processor 1020, such as a central processing unit 1020, a digital signal processor 1020, or a microprocessor 1020, or as hardware, or as an integrated circuit, such as an application-specific integrated circuit. Such software can be distributed on a computer-readable medium, which may include computer storage media or non-transitory media and communication media or transient media. As is known to those skilled in the art, the term computer storage media includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information such as computer-readable instructions, data structures, program modules, or other data. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technologies 1010, CD-ROM, digital versatile disc DVD or other optical disc storage, magnetic cartridges, magnetic tape, disk storage or other magnetic storage devices, or any other medium that can be used to store desired information and is accessible to a computer. Furthermore, as is known to those skilled in the art, communication media typically contain computer-readable instructions, data structures, program modules, or other data in modulated data signals such as carrier waves or other transmission mechanisms, and may include any information delivery medium.

[0103] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this application.

Claims

1. A control method of an air conditioner, characterized by, The method comprises the following steps: In a cooling mode, acquiring an outdoor ambient temperature; In a case where the outdoor ambient temperature is less than a first temperature threshold, acquiring operation information of working components in the air conditioner, the operation information of the working components comprising current temperature information of a heat exchanger and current rotating speed information of a fan; Controlling a rotating frequency of a compressor or a rotating speed of the fan according to the operation information of the working components, so as to increase a temperature of an indoor heat exchanger.

2. The control method of the air conditioner according to claim 1, characterized by, The current temperature information of the heat exchanger comprises a current temperature of an outdoor heat exchanger, and the current rotating speed information of the fan comprises a current rotating speed of an outdoor fan. In a case where the current temperature of the outdoor heat exchanger is less than a second temperature threshold, controlling the rotating speed of the fan according to the current temperature information of the heat exchanger and the current rotating speed information of the fan; In a case where the current temperature of the outdoor heat exchanger is greater than or equal to the second temperature threshold, controlling the rotating speed of the outdoor fan to increase or the rotating frequency of the compressor to decrease according to the current rotating speed of the outdoor fan.

3. The control method of the air conditioner according to claim 2, characterized by, The current temperature information of the heat exchanger further comprises a current temperature of the indoor heat exchanger. In a case where the current temperature of the outdoor heat exchanger is greater than a third temperature threshold, controlling the rotating speed of the fan according to the current temperature of the indoor heat exchanger and the current rotating speed information of the fan; In a case where the current temperature of the outdoor heat exchanger is less than or equal to the third temperature threshold, determining that the indoor heat exchanger is in a first frosting state, and controlling the rotating speed of the outdoor fan to decrease or stop according to the current rotating speed of the outdoor fan.

4. The control method of the air conditioner according to claim 3, characterized by, The current temperature of the indoor heat exchanger comprises an inlet temperature, a middle temperature and an outlet temperature. Determining a frosting state of the indoor heat exchanger according to the inlet temperature, the middle temperature and the outlet temperature of the indoor heat exchanger; Controlling the rotating speed of the fan according to the frosting state and the current rotating speed information of the fan.

5. The control method of the air conditioner according to claim 4, characterized by, In a case where the inlet temperature of the indoor heat exchanger is less than a fourth temperature threshold, determining that the indoor heat exchanger is in a second frosting state; In a case where the inlet temperature of the indoor heat exchanger is greater than or equal to the fourth temperature threshold, if the middle temperature of the indoor heat exchanger is less than a fifth temperature threshold, or if the outlet temperature of the indoor heat exchanger is less than a sixth temperature threshold, determining that the indoor heat exchanger is in a third frosting state. The operation information of the working components further comprises a current opening degree of an expansion valve.

6. The control method of the air conditioner according to claim 5, wherein After determining that the indoor heat exchanger is in the second frosting state, the method further comprises the following steps: In a case where the current opening degree of the expansion valve is less than a preset upper limit value of the opening degree, the operating opening degree of the expansion valve is controlled to increase; In a case where the current opening degree of the expansion valve is equal to the upper limit value of the opening degree, the operating rotational speed of the outdoor fan is controlled to decrease or stop according to the current rotational speed of the outdoor fan.

7. The control method of the air conditioner according to claim 6, wherein The current rotational speed information of the fan further includes a current rotational speed of the indoor fan, and after the indoor heat exchanger is determined to be in the third frosting state, the method further includes: In a case where the operating rotational speed of the indoor fan is less than a preset upper limit value of an indoor rotational speed, the operating rotational speed of the indoor fan is controlled to increase according to the current rotational speed of the indoor fan; In a case where the operating rotational speed of the indoor fan is equal to the upper limit value of the indoor rotational speed, the indoor heat exchanger is determined to be in a second frosting state, so as to control the expansion valve or the outdoor fan based on the current opening degree.

8. The control method of the air conditioner according to claim 2, characterized by, The controlling the operating rotational speed of the outdoor fan to increase or the operating frequency of the compressor to decrease according to the current rotational speed of the outdoor fan includes: In a case where the current rotational speed of the outdoor fan is less than a preset upper limit value of an outdoor rotational speed, the operating rotational speed of the outdoor fan is controlled to increase; In a case where the current rotational speed of the outdoor fan is equal to the upper limit value of the outdoor rotational speed, the operating frequency of the compressor is controlled to decrease.

9. The control method of the air conditioner according to claim 1, wherein In a case where the outdoor ambient temperature is less than a first temperature threshold, the method further includes: Obtaining operating limit information of a working component in the air conditioner, the operating limit information of the working component including an upper limit value of a frequency of the compressor and an upper limit value of a rotational speed of a fan; Controlling the working component to operate according to the operating limit information.

10. A running control device characterized by comprising: The computer readable storage medium stores computer executable instructions for causing a computer to execute the control method according to any one of claims 1 to 9.

11. An air conditioner characterized by comprising: The operation control device according to claim 10.

12. A computer-readable storage medium, characterized in that, The computer readable storage medium stores computer executable instructions for causing a computer to execute the control method according to any one of claims 1 to 9.

Images