Air conditioner control method, air conditioner and storage medium

Abstract

The invention discloses an air conditioner control method which comprises the following steps: determining initial states of a throttling component and a motor of an air conditioner according to a first temperature and a second temperature of the air conditioner; according to the initial state, the real-time operation state of the air conditioner, the first temperature and the second temperature, target control logic of the air conditioner is determined, and the target control logic comprises control logic used for determining opening and closing of a bypass branch of the air conditioner. Opening and closing of the bypass branch in the air conditioner can be controlled on the basis of the temperature inside and outside the environment where the air conditioner is located and the state of the air conditioner, so that the pipeline exhaust pressure in the air conditioner is balanced, and the exhaust pressure value of an air conditioner compressor in the starting stage is reduced under the condition that the high-temperature working condition is located outside or inside the environment; therefore, the frequency of executing exhaust pressure protection measures in the starting process of the air conditioner is reduced to the maximum extent, the air conditioner can quickly enter a stable operation state, and the reliability of starting operation control of the air conditioner is improved.

Description

Technical Field

[0001] The present application relates to the technical field of air conditioning, and in particular to an air conditioner control method, an air conditioner, and a computer-readable storage medium. Background Art

[0002] As air conditioners are used more and more widely, the requirements for their operation are becoming higher and higher. Air conditioners need to be able to start and operate stably under various working conditions.

[0003] When the air conditioner is started in an environment with high temperature outside or inside, the starting operating load is high and the exhaust pressure rises quickly, which can easily lead to abnormal conditions such as high exhaust pressure, and then cause the air conditioner to execute exhaust pressure protection measures, thereby reducing the reliability of the air conditioner's starting and operating control. Summary of the Invention

[0004] The present application provides an air conditioner control method, an air conditioner, and a computer-readable storage medium.

[0005] The air conditioner control method involved in the embodiment of the present application includes the following steps:

[0006] determining an initial state of a throttling component and a motor of the air conditioner according to the first temperature and the second temperature of the air conditioner;

[0007] The target control logic of the air conditioner is determined according to the initial state, the real-time operating state of the air conditioner, the first temperature and the second temperature, wherein the target control logic includes a control logic for determining the opening and closing of the bypass branch of the air conditioner.

[0008] In this way, the present application can control the opening and closing of the bypass branch in the air conditioner based on the temperature inside and outside the environment where the air conditioner is located and the state of the air conditioner itself, thereby balancing the exhaust pressure of the pipeline in the air conditioner, thereby reducing the exhaust pressure value of the air conditioner compressor during the startup phase when the environment is outside or inside the environment is in a high temperature working condition, thereby minimizing the frequency of the air conditioner executing exhaust pressure protection measures during the startup process, allowing the air conditioner to quickly enter a stable operating state, and improving the reliability of the air conditioner startup and operation control.

[0009] In some embodiments, determining the initial state of the throttling component and the motor of the air conditioner based on the first temperature and the second temperature of the air conditioner includes:

[0010] Based on the difference between the first temperature and the second temperature, the initial opening degree of the throttling component and the initial operating power of the first motor are determined, wherein the first temperature is the ambient temperature outside the environment where the air conditioner is located, and the second temperature is the ambient temperature of the environment where the air conditioner is located.

[0011] In this way, the present application can adjust the initial state of the throttling component and the external motor of the air conditioner according to the temperature difference between the inside and outside of the environment before the air conditioner is started.

[0012] In some embodiments, determining the target control logic of the air conditioner based on the initial state, the real-time operating state of the air conditioner, the first temperature, and the second temperature includes:

[0013] When the first temperature is greater than a first preset value, controlling the throttle component to be opened to a maximum degree;

[0014] During a preset period of time, the first motor of the air conditioner is controlled to operate at a maximum operating power.

[0015] In this way, the present application can set the initial states of the throttling component and the air conditioner motor to the highest when the temperature outside the environment where the air conditioner is located is higher than expected.

[0016] In some embodiments, determining the target control logic of the air conditioner based on the initial state, the real-time operating state of the air conditioner, the first temperature, and the second temperature includes:

[0017] When the first temperature is less than or equal to a first preset value, the throttling component is controlled to operate according to a default control logic.

[0018] In this way, the present application can also control the throttle to operate normally when the temperature outside the environment where the air conditioner is located is within a normal range.

[0019] In some embodiments, determining the target control logic of the air conditioner based on the initial state, the real-time operating state of the air conditioner, the first temperature, and the second temperature further includes:

[0020] When the refrigerant pressure of the bypass branch is greater than or equal to a second preset value, the bypass branch is controlled to open.

[0021] In this way, the present application can also control the bypass branch to open when the pressure of the refrigerant material in the bypass branch is higher than expected, so that a part of the refrigerant material flows to the evaporator through the bypass branch where no throttling device is set, thereby reducing the pressure of the refrigerant in the air-conditioning pipeline, thereby controlling the exhaust pressure of the air-conditioning system.

[0022] In some embodiments, determining the target control logic of the air conditioner based on the initial state, the real-time operating state of the air conditioner, the first temperature, and the second temperature further includes:

[0023] When the refrigerant pressure of the bypass branch is less than the second preset value, the throttling component is controlled to operate according to the default control logic.

[0024] In this way, the present application can also keep the bypass branch closed before the pressure of the refrigerant material in the bypass branch reaches the expected level, thereby controlling the normal operation of the air conditioner.

[0025] In some embodiments, determining the target control logic of the air conditioner based on the initial state, the real-time operating state of the air conditioner, the first temperature, and the second temperature further includes:

[0026] When the bypass branch is open and the refrigerant pressure is greater than or equal to a third preset value, the second motor of the air conditioner is controlled to operate at a minimum operating power.

[0027] In this way, the present application can also control the refrigerant pressure in the air conditioner system by controlling the operating power of the motor in the air conditioner to the minimum in response to the refrigerant pressure further exceeding the expected level when the bypass branch is controlled to open due to the higher refrigerant pressure.

[0028] In some embodiments, determining the target control logic of the air conditioner based on the initial state, the real-time operating state of the air conditioner, the first temperature, and the second temperature further includes:

[0029] When the bypass branch is open and the refrigerant pressure is less than a third preset value, the bypass branch is controlled to be closed, and the air conditioner is controlled to operate according to a default control logic.

[0030] In this way, the present application can also close the bypass branch in response to the refrigerant pressure dropping to within the expected range when the bypass branch is controlled to open due to the higher refrigerant pressure, so that the air conditioner returns to normal operation.

[0031] In some embodiments, determining the target control logic of the air conditioner based on the initial state, the real-time operating state of the air conditioner, the first temperature, and the second temperature further includes:

[0032] When the second motor operates at the minimum operating power and the refrigerant pressure is less than the third preset value, the bypass branch is controlled to be closed, and the air conditioner is controlled to operate with a default control logic.

[0033] In this way, based on the above implementation, the present application can also close the bypass branch when the motor in the air conditioner operates at the minimum operating power and the refrigerant pressure drops to an expected range, thereby controlling the air conditioner to resume normal operation.

[0034] In some embodiments, determining the target control logic of the air conditioner based on the initial state, the real-time operating state of the air conditioner, the first temperature, and the second temperature further includes:

[0035] When the second motor operates at minimum operating power and the refrigerant pressure is greater than or equal to the third preset value, the bypass branch is controlled to be closed according to the dynamic change of the refrigerant pressure to control the air conditioner to operate with the default control logic.

[0036] In this way, based on the above-mentioned implementation mode, the present application can also maintain the operating status of the bypass branch when the motor in the air conditioner is running at the minimum operating power and the refrigerant pressure still remains beyond the expected range, and close the bypass branch under certain circumstances and control the normal operation of the air conditioner based on the actual situation of the refrigerant pressure.

[0037] The air conditioner in the embodiment of the present application includes a motor, a bypass branch and a throttling component, and the air conditioner can implement the above-mentioned air conditioner control method.

[0038] The computer-readable storage medium in the embodiments of the present application stores a computer program, and when the computer program is executed by one or more processors, the above-mentioned method is implemented.

[0039] Additional aspects and advantages of the embodiments of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the embodiments of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0041] Figure 1 This is a flow chart of an air conditioner control method according to an embodiment of the present application;

[0042] Figure 2 This is a flow chart of an air conditioner control method according to an embodiment of the present application;

[0043] Figure 3 This is a flow chart of an air conditioner control method according to an embodiment of the present application;

[0044] Figure 4 This is a flow chart of an air conditioner control method according to an embodiment of the present application;

[0045] Figure 5 Schematic diagram of the flow of the air conditioner control method in the embodiment of the present application. DETAILED DESCRIPTION

[0046] The embodiments of the present application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the embodiments of the present application, and should not be understood as limiting the embodiments of the present application.

[0047] See also Figure 1 The air conditioner control method in the embodiment of the present application specifically includes the following steps:

[0048] 01: Determine the initial states of the throttling component and the motor of the air conditioner according to the first temperature and the second temperature of the air conditioner;

[0049] 02: Determine the target control logic of the air conditioner based on the initial state, the real-time operating state of the air conditioner, the first temperature, and the second temperature.

[0050] The target control logic includes a control logic for determining the opening and closing of the bypass branch of the air conditioner.

[0051] The air conditioner control device in the embodiments of the present application can implement the above-described air conditioner control method. Specifically, the air conditioner control device includes an initial state acquisition module and a control logic determination module. The initial state acquisition module is configured to determine the initial state of the air conditioner's throttling component and motor based on the air conditioner's first and second temperatures. The control logic determination module is configured to determine the air conditioner's target control logic based on the air conditioner's current state, the first temperature, and the second temperature.

[0052] The air conditioner in the embodiments of the present application includes a motor, a bypass branch, and a throttling component, and is capable of implementing the aforementioned air conditioning control method. Furthermore, the air conditioner includes a memory and a processor, wherein the memory stores a computer program, and the processor is configured to determine an initial state of the throttling component and the motor of the air conditioner based on a first temperature and a second temperature of the air conditioner, and to determine a target control logic for the air conditioner based on a current state of the air conditioner, the first temperature, and the second temperature.

[0053] Specifically, to address the problems in the above-mentioned background technology, the present invention provides an air conditioner control method, which is designed to control the opening and closing of the air conditioner bypass branch according to the indoor and outdoor temperatures and the current status of various components of the air conditioner when the air conditioner is started under high outdoor temperature conditions, thereby controlling the refrigerant pressure in the air conditioner circulation system, thereby preventing the air conditioner from being overly high in exhaust pressure due to high operating load and excessive rise in exhaust pressure when the air conditioner is started under high temperature conditions. The so-called bypass branch refers to a circulation path in the circulation system that is not activated under abnormal conditions. Under normal operation of the air conditioner, the bypass branch is closed by valve control, and the refrigerant material cannot flow through the bypass branch to circulate and dissipate heat. Only when specific conditions are met, the valve of the bypass branch is controlled to open, and the refrigerant will flow through the bypass branch. In other words, the bypass branch is a spare circulation path used to allow refrigerant to flow under special conditions to increase the fluidity of the refrigerant, or to replace the normal circulation path to achieve normal circulation of the refrigerant material. It should be noted that in the air conditioner circulation system, the refrigerant pressure generally includes two pressure values: refrigerant high pressure and refrigerant low pressure. For the sake of convenience, the refrigerant pressure described below in the embodiment of this application refers to the refrigerant high pressure in the circulation system.

[0054] Generally speaking, the control logic for the bypass branch is generally pre-stored in the memory of the air conditioner. The air conditioner can select one from the pre-stored alternative control logics as the current target control logic based on the quantitative relationship between the current indoor and outdoor temperatures and the initial state of each component of the air conditioner when it is started, thereby realizing the control of the opening and closing of the bypass branch.

[0055] In specific implementation, the initial state of each component of the air conditioner (such as the motor, throttling component, etc.) when it is started is affected by the quantitative relationship between the current indoor and outdoor temperatures. Therefore, in order to determine the initial state of the motor and the throttling component when the air conditioner is started, the indoor temperature and outdoor temperature of the environment where the air conditioner is located are first obtained. The above two sets of temperature information can be obtained through temperature measuring devices such as thermometers and temperature sensors installed on the air conditioner. Then, based on the quantitative relationship between the above two sets of temperature information, the initial state of the throttling component and the motor when it is started is determined according to actual conditions.

[0056] After determining the initial states of the throttling component and the motor at startup, these states and the two sets of temperature information are used as basic reference data to determine the current target control logic, thereby controlling the operating states of various components in the air conditioner and the opening and closing of the bypass branch. The target control logic may be one of multiple alternative control logics pre-stored in the air conditioner's memory, or may be a control logic determined by a preset calculation method based on the basic reference data, and this application does not impose any specific limitations.

[0057] In this way, the present application can control the opening and closing of the bypass branch in the air conditioner based on the temperature inside and outside the environment where the air conditioner is located and the state of the air conditioner itself, thereby balancing the exhaust pressure of the pipeline in the air conditioner, thereby reducing the exhaust pressure value of the air conditioner compressor during the startup phase when the environment is outside or inside the environment is in a high temperature working condition, thereby minimizing the frequency of the air conditioner executing exhaust pressure protection measures during the startup process, allowing the air conditioner to quickly enter a stable operating state, and improving the reliability of the air conditioner startup and operation control.

[0058] In some embodiments, step 01 includes:

[0059] Determining the initial opening degree of the throttle component and the initial operating power of the first motor according to the difference between the first temperature and the second temperature,

[0060] The first temperature is the ambient temperature outside the environment where the air conditioner is located, and the second temperature is the ambient temperature of the environment where the air conditioner is located.

[0061] In certain embodiments, the initial state acquisition module is further configured to determine an initial opening degree of the throttle component and an initial operating power of the first motor according to a difference between the first temperature and the second temperature.

[0062] In certain embodiments, the processor is further configured to determine an initial opening degree of the throttle component and an initial operating power of the first motor according to a difference between the first temperature and the second temperature.

[0063] Specifically, the following describes, by way of example, how to determine the initial states of the air conditioner's external motor (corresponding to the first motor) and the throttle component when the air conditioner is started.

[0064] In some examples, the outdoor temperature (corresponding to a first temperature) and the indoor temperature (corresponding to a second temperature) of the air conditioner's environment are first obtained using a temperature measuring device such as a temperature sensor or thermometer provided on the air conditioner. Then, based on the difference between the outdoor and indoor temperatures, the corresponding initial operating power of the motor and the initial opening degree of the throttle component are determined. The initial operating power and initial opening degree can be determined based on a pre-stored relationship between the operating power of the external motor and the indoor and outdoor temperature difference, and a pre-stored relationship between the throttle opening degree and the indoor and outdoor temperature difference, respectively, to coordinate the start-up of the compressor in the air conditioner, thereby starting the air conditioner. The external motor of the air conditioner refers to an electric motor provided on an external device of the air conditioner for dissipating heat to the outside, and the component that cooperates with the external motor to dissipate heat is the condenser in the air conditioner. The external motor and condenser cooperate to condense the gaseous refrigerant and dissipate the heat generated during the condensation process to the outdoor environment through the external motor. The higher the operating power of the external motor, the higher the condensation efficiency and the faster the condensation pressure decreases.

[0065] It should also be noted that in order to ensure the normal operation of the air conditioner, the acquisition of the indoor and outdoor temperatures of the environment where the air conditioner is located is continuous with the operation of the air conditioner. As long as the air conditioner is powered on, the above temperature acquisition process will continue to be executed.

[0066] In this way, the present application can adjust the initial state of the throttling component and the external motor of the air conditioner according to the temperature difference between the inside and outside of the environment before the air conditioner is started.

[0067] See also Figure 2 In some embodiments, step 02 includes:

[0068] 0211: When the first temperature is greater than a first preset value, controlling the throttle component to be opened to the maximum extent;

[0069] 0212: Controlling the first motor of the air conditioner to operate at maximum operating power within a preset time period; and

[0070] 0213: When the first temperature is less than or equal to a first preset value, the throttling component is controlled to operate with a default control logic.

[0071] In some embodiments, the control logic determination module is also used to control the throttling component to be maximum open when the first temperature is greater than a first preset value, and to control the first motor of the air conditioner to operate at maximum operating power within a preset time period, and to control the throttling component to operate with a default control logic when the first temperature is less than or equal to the first preset value.

[0072] In some embodiments, the processor is also used to control the throttling component to be maximum open when the first temperature is greater than a first preset value, and to control the first motor of the air conditioner to operate at maximum operating power within a preset time period, and to control the throttling component to operate with a default control logic when the first temperature is less than or equal to a first preset value.

[0073] Specifically, the bypass branch opening and closing control process is exemplified below.

[0074] First of all, before controlling the opening and closing of the bypass branch, it is necessary to prioritize monitoring the pressure status of the refrigerant material in the air conditioner's circulation system. If the outdoor temperature of the air conditioner is too high, the heat dissipation efficiency of the air conditioner's external equipment will be greatly reduced, and the refrigerant material will be in a high temperature and high pressure state, which is very likely to cause the refrigerant pressure in the circulation system to rise rapidly to the critical threshold PG that triggers the exhaust pressure protection after the air conditioner is started.

[0075] To control the above situation, in some examples, if the current outdoor temperature obtained by the temperature sensor installed on the air conditioner is higher than a preset temperature threshold (corresponding to a first preset value), it means that the outdoor temperature is relatively high. At this time, if the air conditioner is started, the refrigerant pressure inside the air conditioner needs to be controlled. In this case, the following first target control logic can be determined:

[0076] First, based on the aforementioned condition that the current outdoor temperature is higher than the preset temperature threshold, a high-temperature start logic instruction is sent to various components of the air conditioner. In response to this instruction, the air conditioner's throttling component and external motor adjust their operating states to their highest level. Specifically, the throttling component adjusts its opening to the maximum, and the external motor adjusts its operating power to the maximum.

[0077] Under the aforementioned control logic, the throttling element is opened to its maximum extent, minimizing restrictions on the flow of refrigerant through the circulation system. This accelerates the flow of refrigerant throughout the system and improves heat exchange efficiency. Furthermore, the external motor operates at maximum power to maximize heat dissipation to the outdoor environment. These measures minimize the time it takes for the refrigerant pressure to reach the critical threshold PG.

[0078] However, correspondingly, there are also safety hazards when the external motor runs at maximum operating power for a long time at high temperature. If the running time is too long, the high outdoor temperature and the electric heat generated by the external motor itself due to the maximum power operation will have a relatively serious adverse effect on the normal operation of the external motor. Therefore, the above-mentioned target control logic needs to set a time limit (corresponding to a preset time period) for the external motor to run at maximum operating power. When the time for the throttling component and the external motor to run at the highest state reaches the above-mentioned time limit, the above-mentioned first target control logic is released, and the operating state of the throttling component and the external motor returns to the initial operating state in the above-mentioned embodiment. It should also be noted that the above-mentioned time limit is the only exit condition of the above-mentioned first target control logic, which not only ensures the delay effect of the exhaust pressure protection triggering, but also ensures the protection of various components on the air conditioner. After executing the above-mentioned first target control logic, the air conditioner can further determine the next target control logic according to the actual situation of the refrigerant material in the circulation system.

[0079] In addition, contrary to the above situation, if the current outdoor temperature obtained by the temperature sensor provided on the air conditioner is equal to or lower than the preset temperature threshold (corresponding to the first preset value), it means that the outdoor temperature is normal at this time. At this time, the following second target control logic can be determined:

[0080] The throttling component and the external motor of the air conditioner are controlled to operate in the initial state in the above embodiment, and the air conditioner is started normally with the default control logic in conjunction with the start-up of the compressor.

[0081] In this way, the present application can set the initial state of the throttling component and the air conditioner motor to the highest when the temperature outside the environment where the air conditioner is located is higher than expected, and can also control the normal operation of the throttle when the temperature outside the environment where the air conditioner is located is within the normal range.

[0082] See also Figure 3 In some embodiments, step 02 further includes:

[0083] 0221: When the refrigerant pressure of the bypass branch is greater than or equal to a second preset value, control the bypass branch to open;

[0084] 0222: When the refrigerant pressure of the bypass branch is less than the second preset value, the throttling component is controlled to operate with the default control logic.

[0085] In some embodiments, the control logic determination module is also used to control the bypass branch to open when the refrigerant pressure in the bypass branch is greater than or equal to a second preset value, and to control the throttling component to operate with the default control logic when the refrigerant pressure in the bypass branch is less than the second preset value.

[0086] In some embodiments, the processor is also used to control the bypass branch to open when the refrigerant pressure in the bypass branch is greater than or equal to a second preset value, and to control the throttling component to operate with a default control logic when the refrigerant pressure in the bypass branch is less than the second preset value.

[0087] Specifically, based on the execution of the first target control logic of the above-described embodiment, in certain examples, the bypass branch valve is generally closed when the air conditioner is initially started, and the bypass branch remains closed during normal operation of the air conditioner's circulation system. However, in the context of the above-described embodiment, because the air conditioner is started under high outdoor temperature conditions, the refrigerant pressure within the air conditioner may be at a relatively high level. In order to control the refrigerant pressure and delay its reaching the critical threshold PG that triggers the exhaust pressure protection, it may be necessary to open the bypass branch and increase the refrigerant flow path, thereby controlling the refrigerant pressure within the air conditioner.

[0088] Therefore, the air conditioner needs to monitor the refrigerant pressure of the refrigerant material at the inlet valve of the bypass branch in real time. If the air conditioner detects that the current refrigerant pressure inside it is equal to or greater than the preset pressure threshold P1s (corresponding to the second preset value), the following third target control logic can be determined:

[0089] Control the valves of the bypass branch to open.

[0090] When the third target control logic mentioned above is executed, the refrigerant material in the air conditioner circulation system can be controlled by the drive of the compressor to circulate through the conventional circulation path and the bypass branch. Compared with the circulation and heat dissipation only through the conventional circulation path, the circulation path is increased. In addition, based on the structure of the air conditioner circulation system in the current technology, the bypass branch is generally directly connected to the compressor outlet and the evaporator, and does not pass through the condenser and throttling components that are likely to cause the accumulation of refrigerant materials and increase the refrigerant pressure. Therefore, when the bypass branch valve opens in response to the third target control logic mentioned above, it will greatly reduce the refrigerant pressure in the circulation system, thereby achieving control of the refrigerant pressure and delaying the process of it reaching the critical threshold PG that triggers the exhaust pressure protection.

[0091] It should be noted that in order to ensure that the above-mentioned delay purpose can be achieved, the value of P1s must be lower than PG, otherwise the purpose of avoiding triggering the exhaust pressure protection will not be achieved.

[0092] In addition, if the air conditioner detects that the current refrigerant pressure inside the air conditioner is less than the preset pressure threshold value P1s, the following fourth target control logic may be determined:

[0093] Keep the valves of the bypass branch closed, control the throttling component and the external motor of the air conditioner to operate in the initial state in the above embodiment, and coordinate with the operation of the compressor to control the normal operation of the air conditioner with the default control logic.

[0094] In this way, the present application can also control the bypass branch to open when the pressure of the refrigerant material in the bypass branch is higher than expected, so that a part of the refrigerant material flows to the evaporator through the bypass branch that is not equipped with a throttling device, thereby reducing the pressure of the refrigerant in the air-conditioning circulation system, thereby controlling the exhaust pressure of the air-conditioning system. At the same time, it can also keep the bypass branch closed before the pressure of the refrigerant material in the bypass branch reaches the expected state, thereby controlling the normal operation of the air conditioner.

[0095] See also Figure 4 In some embodiments, step 02 further includes:

[0096] 0231: When the bypass branch is open and the refrigerant pressure is greater than or equal to a third preset value, controlling the second motor of the air conditioner to operate at a minimum operating power;

[0097] 0232: When the bypass branch is open and the refrigerant pressure is less than the third preset value, the bypass branch is controlled to be closed, and the air conditioner is controlled to operate with the default control logic.

[0098] In some embodiments, the control logic determination module is also used to control the second motor of the air conditioner to operate at minimum operating power when the bypass branch is open and the refrigerant pressure is greater than or equal to a third preset value, and to control the bypass branch to close and control the air conditioner to operate with the default control logic when the bypass branch is open and the refrigerant pressure is less than the third preset value.

[0099] In some embodiments, the processor is also used to control the second motor of the air conditioner to operate at minimum operating power when the bypass branch is open and the refrigerant pressure is greater than or equal to a third preset value, and to control the bypass branch to close and control the air conditioner to operate with a default control logic when the bypass branch is open and the refrigerant pressure is less than a third preset value.

[0100] Specifically, when the third target control logic in the above-described embodiment is executed, in some examples, the bypass branch has already opened in response to the execution of the third target control logic, and refrigerant has begun to flow through the bypass branch, thus controlling the refrigerant pressure in the air conditioner's circulation system to a certain extent. However, since the bypass branch does not pass through the condenser or the throttling component, the refrigerant flowing through the bypass branch cannot achieve heat exchange. Furthermore, the prolonged opening of the bypass branch can further reduce the refrigerant pressure. If the refrigerant pressure is too low, the circulation system cannot achieve heat exchange, and the air conditioner will malfunction. Therefore, maintaining normal heat exchange in the air conditioner and delaying the increase in refrigerant pressure require the air conditioner to monitor the refrigerant pressure in real time.

[0101] In this context, if the bypass branch has been opened in response to the third target control logic, the air conditioner will continue to monitor the refrigerant pressure. If it is detected that the refrigerant pressure is greater than or equal to the preset threshold value P2s (corresponding to the third preset value), the following fifth target control logic can be determined:

[0102] Control the operating power of the motor in the air conditioner to its minimum operating power, and temporarily keep the bypass branch open.

[0103] Under the fifth target control logic described above, while the refrigerant pressure is controlled but remains at a level greater than or equal to P2s, the bypass branch is already open. Further control of the refrigerant pressure requires adjusting the operating states of other components in the air conditioner. First, by still maintaining the bypass branch open, further increases in the refrigerant pressure are limited, continuing to delay the refrigerant pressure from reaching the critical threshold PG that triggers exhaust pressure protection. Furthermore, further control of the refrigerant pressure can be achieved by controlling the operating power of the motor (corresponding to the second motor) within the air conditioner to the minimum operating power mode.

[0104] The air conditioner's internal motor typically works in conjunction with the evaporator. The evaporation of the refrigerant in the evaporator absorbs heat, which is then dissipated through the internal motor to achieve a cooling effect. The lower the internal motor's operating power, the lower the efficiency of heat absorption and cooling, and the slower the refrigerant pressure rises, making it easier to limit the current refrigerant pressure.

[0105] On the contrary, if it is detected that the refrigerant pressure is less than the preset threshold value P2s (corresponding to the third preset value), the following sixth target control logic can be determined:

[0106] Just control the valves of the bypass branch to close, and use the default control logic to control the normal operation of each component of the air conditioner.

[0107] Under the above-mentioned sixth target control logic, due to the opening of the bypass branch, the refrigerant pressure is controlled to drop. When the refrigerant pressure is controlled to drop below P2s, if the bypass branch continues to be opened, since the refrigerant material passing through the bypass branch does not participate in the heat exchange process, this will have an adverse effect on the normal operation of the air conditioner, and the refrigerant pressure has been reduced to a relatively safe level. There is no need to consider continuing to control the refrigerant pressure for the time being. Therefore, in response to the sixth target control logic, the valves of the bypass branch are closed, and the circulation system of the air conditioner returns to the normal heat circulation state. At the same time, the various components are controlled to operate normally according to the default control logic, and the air conditioner returns to normal operation.

[0108] It should be noted that, based on the fifth target control logic and the sixth target control logic, the value of P2s should be further smaller than P1s, otherwise the fifth target control logic and the sixth target control logic cannot achieve their purpose.

[0109] In this way, the present application can also control the refrigerant pressure in the air conditioner system by controlling the operating power of the motor in the air conditioner to be minimum in response to the refrigerant pressure further rising above expected level when the bypass branch is controlled to open due to higher refrigerant pressure. At the same time, the present application can also close the bypass branch in response to the refrigerant pressure falling to within expected range when the bypass branch is controlled to open due to higher refrigerant pressure, so that the air conditioner returns to normal operation.

[0110] See also Figure 5 In some embodiments, step 02 further includes:

[0111] 0241: When the second motor operates at the minimum operating power and the refrigerant pressure is less than the third preset value, the bypass branch is controlled to be closed, and the air conditioner is controlled to operate with the default control logic;

[0112] 0242: When the second motor is operating at the minimum operating power and the refrigerant pressure is greater than or equal to the third preset value, the bypass branch is controlled to be closed according to the dynamic change of the refrigerant pressure to control the air conditioner to operate with the default control logic.

[0113] In some embodiments, the control logic determination module is also used to control the bypass branch to close and control the air conditioner to operate with the default control logic when the second motor operates at the minimum operating power and the refrigerant pressure is less than a third preset value, and to control the bypass branch to close according to the dynamic changes of the refrigerant pressure when the second motor operates at the minimum operating power and the refrigerant pressure is greater than or equal to the third preset value, so as to control the air conditioner to operate with the default control logic.

[0114] In some embodiments, the processor is also used to control the bypass branch to close and control the air conditioner to operate with the default control logic when the second motor is operating at minimum operating power and the refrigerant pressure is less than a third preset value, and is used to control the bypass branch to close according to the dynamic changes of the refrigerant pressure when the second motor is operating at minimum operating power and the refrigerant pressure is greater than or equal to the third preset value, so as to control the air conditioner to operate with the default control logic.

[0115] Specifically, when the fifth target control logic in the above embodiment is executed, in some examples, in order to further control the refrigerant pressure to reduce it below P2s, the bypass branch is temporarily kept open and the operating power of the air conditioner motor is adjusted to a minimum. At this point, the air conditioner still needs to further monitor the refrigerant pressure and control the opening and closing of the bypass branch based on the monitoring results. When conditions are met, the bypass branch should be closed to enable normal operation of the air conditioner.

[0116] In this context, if the air conditioner detects that the current refrigerant pressure is less than P2s, the above-mentioned sixth target control logic can be used as the current target control logic, that is, the valves of the bypass branch are controlled to be closed, and the default control logic is used to control the normal operation of various components of the air conditioner, so that the refrigerant circulation of the air conditioner returns to normal and ensures the normal heat exchange process of the air conditioner.

[0117] On the contrary, in the above context, if the air conditioner detects that the current refrigerant pressure is still greater than or equal to P2s, the following seventh target control logic can be determined:

[0118] The bypass branch is temporarily kept open, and the default control logic is used to control the normal operation of the air conditioner components. When the refrigerant pressure drops to less than P2s, the bypass branch is controlled to be closed.

[0119] Under the seventh target control logic, since the refrigerant pressure has not dropped to P2s or below after multiple rounds of control, the air conditioner's normal operation cannot be interrupted by the aforementioned refrigerant pressure control logic. Therefore, in this situation, while the bypass branch remains open, the operation of all air conditioner components, including the internal motor, is adjusted to normal operation according to the default control logic. If the outdoor and indoor temperature environments change and the air conditioner detects that the refrigerant pressure has dropped below P2s, the bypass branch valves are controlled to close, and the air conditioner is restored to normal operation.

[0120] In this way, the present application can also, based on the above-mentioned implementation mode, close the bypass branch when the motor in the air conditioner is running at the minimum operating power when the refrigerant pressure drops to within the expected range, and control the air conditioner to resume normal operation. At the same time, based on the above-mentioned implementation mode, when the motor in the air conditioner is running at the minimum operating power, maintain the operating status of the bypass branch when the refrigerant pressure still remains beyond the expected range, and close the bypass branch under certain circumstances and control the air conditioner to operate normally based on the actual situation of the refrigerant pressure.

[0121] The computer-readable storage medium in the embodiments of the present application stores a computer program, and when the computer program is executed by one or more processors, the above-mentioned method is implemented.

[0122] In the description of this specification, the reference terms "certain embodiments", "in an example", "exemplarily", etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are mutually inconsistent.

[0123] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, segment or portion of code comprising one or more executable instructions for implementing the steps of a specific logical function or process, and the scope of the preferred embodiments of the present application includes alternative implementations in which functions may be performed out of the order shown or discussed, including performing functions in a substantially simultaneous manner or in the reverse order depending on the functions involved, which should be understood by those skilled in the art to which the embodiments of the present application belong.

[0124] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A method for controlling an air conditioner, characterized in that: The method comprises: determining an initial state of a throttling component and a motor of the air conditioner according to the first temperature and the second temperature of the air conditioner; The target control logic of the air conditioner is determined according to the initial state, the real-time operating state of the air conditioner, the first temperature and the second temperature, wherein the target control logic includes a control logic for determining the opening and closing of the bypass branch of the air conditioner.

2. The method according to claim 1, characterized in that The determining the initial states of the throttling component and the motor of the air conditioner according to the first temperature and the second temperature of the air conditioner comprises: Based on the difference between the first temperature and the second temperature, the initial opening degree of the throttling component and the initial operating power of the first motor are determined, wherein the first temperature is the ambient temperature outside the environment where the air conditioner is located, and the second temperature is the ambient temperature of the environment where the air conditioner is located.

3. The method according to claim 1, characterized in that The determining of the target control logic of the air conditioner according to the initial state, the real-time operating state of the air conditioner, the first temperature, and the second temperature includes: When the first temperature is greater than a first preset value, controlling the throttle component to be opened to a maximum degree; During a preset period of time, the first motor of the air conditioner is controlled to operate at a maximum operating power.

4. The method according to claim 3, characterized in that The determining of the target control logic of the air conditioner according to the initial state, the real-time operating state of the air conditioner, the first temperature, and the second temperature includes: When the first temperature is less than or equal to a first preset value, the throttling component is controlled to operate according to a default control logic.

5. The method according to claim 3, characterized in that The determining of the target control logic of the air conditioner according to the initial state, the real-time operating state of the air conditioner, the first temperature, and the second temperature further includes: When the refrigerant pressure of the bypass branch is greater than or equal to a second preset value, the bypass branch is controlled to open.

6. The method according to claim 5, characterized in that The determining of the target control logic of the air conditioner according to the initial state, the real-time operating state of the air conditioner, the first temperature, and the second temperature further includes: When the refrigerant pressure of the bypass branch is less than the second preset value, the throttling component is controlled to operate according to the default control logic.

7. The method according to claim 5, characterized in that The determining of the target control logic of the air conditioner according to the initial state, the real-time operating state of the air conditioner, the first temperature, and the second temperature further includes: When the bypass branch is open and the refrigerant pressure is greater than or equal to a third preset value, the second motor of the air conditioner is controlled to operate at a minimum operating power.

8. The method according to claim 5, characterized in that The determining of the target control logic of the air conditioner according to the initial state, the real-time operating state of the air conditioner, the first temperature, and the second temperature further includes: When the bypass branch is open and the refrigerant pressure is less than a third preset value, the bypass branch is controlled to be closed, and the air conditioner is controlled to operate according to a default control logic.

9. The method according to claim 7, characterized in that The determining of the target control logic of the air conditioner according to the initial state, the real-time operating state of the air conditioner, the first temperature, and the second temperature further includes: When the second motor operates at the minimum operating power and the refrigerant pressure is less than the third preset value, the bypass branch is controlled to be closed, and the air conditioner is controlled to operate with a default control logic.

10. The method according to claim 9, characterized in that The determining of the target control logic of the air conditioner according to the initial state, the real-time operating state of the air conditioner, the first temperature, and the second temperature further includes: When the second motor operates at minimum operating power and the refrigerant pressure is greater than or equal to the third preset value, the bypass branch is controlled to be closed according to the dynamic change of the refrigerant pressure to control the air conditioner to operate with the default control logic.

11. An air conditioner, characterized in that: The air conditioner includes a motor, a bypass branch, and a throttling component, and the air conditioner can implement the air conditioner control method according to claims 1-10.

12. A computer-readable storage medium, characterized in that The computer-readable storage medium stores a computer program, and when the computer program is executed by one or more processors, the method according to claims 1 to 10 is implemented.

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