Air conditioner

Abstract

The invention discloses an air conditioner which comprises a refrigerant circulation loop, an outdoor environment temperature sensor, an exhaust temperature sensor, a coil pipe temperature sensor, an outdoor fan and a controller, and the controller is configured to determine the current running state of the air conditioner when receiving a starting-up instruction; according to the method, the current running state of the air conditioner is obtained, the outdoor environment temperature corresponding to the current running state is obtained, when the outdoor environment temperature exceeds the preset temperature threshold value, the air conditioner is controlled to execute the preset start-up control strategy so as to be controlled to be started, and therefore the more accurate outdoor environment temperature can be obtained, and the air conditioner can be controlled to be started through corresponding logic judgment. The air conditioner can be normally started under most conditions, the situation that the air conditioner enters an unnecessary fault protection state due to misjudgment is avoided, then the starting and running reliability of the air conditioner is improved, and the use experience of a user is improved.

Description

Technical Field

[0001] This invention relates to the field of air conditioner technology, and in particular to an air conditioner. Background Technology

[0002] Currently, the ambient temperature sensor of the outdoor unit of the air conditioner is placed at the air inlet on the back side of the condenser. When the fan of the outdoor unit is running, the air passes through the ambient temperature sensor and then through the condenser, which can accurately detect the outdoor ambient temperature. However, when there are external interference factors in the installation environment, the detection may be inaccurate. In this case, the temperature detected by the sensor will deviate significantly from the actual temperature. In severe cases, the air conditioner may enter the protection point and fail to start and run, thus reporting a fault.

[0003] In existing technologies, outdoor fans are typically started intermittently to eliminate the influence of external interference factors such as direct sunlight, thereby obtaining an accurate outdoor temperature. However, this solution requires the outdoor unit to be continuously powered on to constantly execute the outdoor fan start-up process, which does not eliminate the problem of inaccurate initial outdoor ambient temperature values ​​when powered on. Inaccurate initial values ​​may cause the fan to fail to start if it exceeds the operating range. Adding a fan start-up check each time results in slow compressor start-up, poor cooling or heating performance, increased noise and power consumption, and ultimately, a poor user experience. Summary of the Invention

[0004] The present invention aims to at least solve one of the technical problems existing in the prior art. Therefore, the object of the present invention is to provide an air conditioner.

[0005] The present invention provides an air conditioner comprising: The refrigerant circulation loop allows the refrigerant to circulate in a loop consisting of a compressor, condenser, expansion valve, and evaporator. One of the condensers and the other of the evaporator is an outdoor heat exchanger and the other is an indoor heat exchanger. Outdoor ambient temperature sensor, used to detect outdoor ambient temperature; An exhaust temperature sensor is used to detect the exhaust temperature of the compressor; A coil temperature sensor is used to detect the coil temperature of the outdoor heat exchanger. An outdoor fan is used to drive outdoor air through the outdoor heat exchanger by rotation, so that the outdoor heat exchanger exchanges heat with the outdoor air. The controller is configured to: Upon receiving a power-on command, the system determines the current operating state of the air conditioner and obtains the outdoor ambient temperature corresponding to the current operating state. When the outdoor ambient temperature exceeds a preset temperature threshold, the system controls the air conditioner to execute a preset power-on control strategy to start the air conditioner. When executing the preset power-on control strategy, the controller is configured as follows: When the air conditioner is determined to be in the first operating state, the exhaust temperature and / or the coil temperature are acquired, a reference temperature is determined based on the exhaust temperature and / or the coil temperature, and the operating state of the compressor and the outdoor fan is controlled based on the outdoor ambient temperature, the reference temperature and the preset temperature threshold. When it is determined that the air conditioner is in the second operating state, the first shutdown time of the outdoor fan and the compressor is obtained, and the operating state of the compressor and the outdoor fan is controlled according to the first shutdown time and the first preset time threshold. When the air conditioner is determined to be in the third operating state, the second shutdown time of the outdoor fan and the compressor is obtained, and the operating state of the compressor and the outdoor fan is controlled according to the second shutdown time and the second preset time threshold.

[0006] According to an embodiment of the present invention, when the air conditioner receives a start-up command, it determines the current operating state of the air conditioner and obtains the outdoor ambient temperature corresponding to the current operating state. Then, it compares the outdoor ambient temperature with a preset temperature threshold. If the outdoor ambient temperature exceeds the preset temperature threshold, it selects a start-up control strategy corresponding to the current operating state of the air conditioner. That is, when the air conditioner is in a first operating state, it determines a reference temperature based on the obtained exhaust temperature and / or coil temperature, and controls the operating state of the compressor and outdoor fan based on the outdoor ambient temperature, the reference temperature, and the preset temperature threshold; when the air conditioner is in a second operating state, it controls the operating state of the compressor and outdoor fan based on the compressor... The system compares the first shutdown time of the compressor and outdoor fan with the first preset time threshold to control the operating status of the compressor and outdoor fan. When the air conditioner is in the third operating state, the system compares the second shutdown time of the outdoor fan and compressor with the second preset time threshold to control the operating status of the compressor and outdoor fan, thereby controlling the start of the air conditioner. This allows for a more accurate acquisition of the outdoor ambient temperature under specific operating conditions. Through corresponding logical judgments, the system ensures that the air conditioner can start normally in most cases, avoiding unnecessary fault protection states due to misjudgment. This improves the reliability of the air conditioner's start-up and operation, and enhances the user experience.

[0007] In addition, the air conditioner according to embodiments of the present invention may also have the following additional technical features: Furthermore, the controller is also configured to: control the compressor and the outdoor fan to start directly when the outdoor ambient temperature does not exceed the preset temperature threshold.

[0008] The above technical solution has the following advantages or beneficial effects: it not only improves the response speed of the air conditioner, but also avoids affecting the user experience due to unnecessary delay in starting when the outdoor ambient temperature is suitable, thereby achieving efficient, fast and stable start-up control.

[0009] Furthermore, when determining the reference temperature based on the exhaust temperature and / or the coil temperature, the controller is configured to: when only the exhaust temperature or the coil temperature is acquired, use the exhaust temperature or the coil temperature as the reference temperature; when both the exhaust temperature and the coil temperature are acquired simultaneously and are equal, use either the exhaust temperature or the coil temperature as the reference temperature; when both the exhaust temperature and the coil temperature are acquired simultaneously and are not equal, use the temperature with the lower value between the exhaust temperature and the coil temperature as the reference temperature.

[0010] The above technical solution has the following advantages or beneficial effects: by reasonably selecting a reference value that is closer to the actual outdoor ambient temperature, the accuracy and reliability of the air conditioner's start-up judgment in high-temperature environments are improved, thereby ensuring the safe operation of the system while avoiding misjudgments caused by sensor deviation or local temperature rise, and improving the success rate of the whole machine start-up and user experience.

[0011] Furthermore, when determining the current operating state of the air conditioner, the controller is configured to: determine that the air conditioner is in the first operating state when the air conditioner supplies power to the outdoor fan and the compressor, and the outdoor fan and the compressor are in the initial operating state; determine that the air conditioner is in the second operating state when the outdoor fan and the compressor meet the shutdown conditions and remain powered on during operation; and determine that the air conditioner is in the third operating state when the air conditioner receives a shutdown command and controls the outdoor fan and the compressor to stop.

[0012] The above technical solution has the following advantages or beneficial effects: the controller can adopt corresponding start-up control strategies according to different start-up scenarios, thereby improving the start-up success rate and operational stability of the air conditioner under different operating conditions.

[0013] Furthermore, the air conditioner also includes: an indoor ambient temperature sensor for detecting the indoor ambient temperature; the controller is configured to: acquire the indoor ambient temperature; when the indoor ambient temperature reaches a set indoor temperature threshold, determine that the outdoor fan and the compressor meet the shutdown conditions, and control the outdoor fan and the compressor to shut down.

[0014] The above-mentioned technical solution has the following advantages or beneficial effects: it not only achieves precise regulation of indoor ambient temperature, but also effectively avoids energy waste caused by excessive cooling or heating, and improves the operating efficiency of the air conditioner and the user's comfort.

[0015] Furthermore, when controlling the operating status of the compressor and the outdoor fan based on the outdoor ambient temperature, the reference temperature, and the preset temperature threshold, the controller is configured to: control the outdoor fan to remain in a stopped operating state and control the compressor to start when the outdoor ambient temperature is greater than or equal to the reference temperature and the reference temperature is less than or equal to the preset temperature threshold.

[0016] The above technical solution has the following advantages or beneficial effects: under the premise of ensuring the safe operation of the system, unnecessary outdoor fan start-up is avoided, the response speed is improved, energy consumption is reduced, and the start-up efficiency and user experience of the air conditioner are improved at suitable ambient temperatures.

[0017] Furthermore, when controlling the operating status of the compressor and the outdoor fan based on the outdoor ambient temperature, the reference temperature, and the preset temperature threshold, the controller is further configured to: control the outdoor fan to run when the outdoor ambient temperature is greater than or equal to the reference temperature, and the reference temperature is greater than the preset temperature threshold, until the outdoor ambient temperature is less than or equal to the preset temperature threshold, then control the outdoor fan to stop running and control the compressor to start; and control the outdoor fan to run when the outdoor ambient temperature is less than the reference temperature, until the outdoor ambient temperature is less than or equal to the preset temperature threshold, then control the outdoor fan to stop running and control the compressor to start.

[0018] The above technical solution has the following advantages or beneficial effects: by controlling the outdoor fan to assist the air conditioner in starting, the starting conditions of the air conditioner in high-temperature environments can be effectively improved, the success rate and safety of system startup can be increased, and the risk of false startup or compressor damage caused by excessively high ambient temperature can be avoided.

[0019] Furthermore, when controlling the operating status of the compressor and the outdoor fan according to the first shutdown time and the first preset time threshold, the controller is configured to: when the first shutdown time is less than or equal to the first preset time threshold, control the outdoor fan to remain in a stopped state and control the compressor to start; when the first shutdown time is greater than the first preset time threshold, control the outdoor fan to run until the outdoor ambient temperature is less than or equal to the preset temperature threshold, then control the outdoor fan to stop running and control the compressor to start.

[0020] The above technical solution has the following advantages or beneficial effects: it can intelligently adjust the start-up strategy according to different downtime, which not only ensures the safety of system operation, but also improves the start-up efficiency and adaptability of the air conditioner under different operating conditions.

[0021] Furthermore, when controlling the operating status of the compressor and the outdoor fan according to the second shutdown time and the second preset time threshold, the controller is configured to: when the second shutdown time is less than or equal to the second preset time threshold, control the outdoor fan to remain in a stopped state and control the compressor to start; when the second shutdown time is greater than the second preset time threshold, control the outdoor fan to run until the outdoor ambient temperature is less than or equal to the preset temperature threshold, then control the outdoor fan to stop running and control the compressor to start.

[0022] The above technical solution has the following advantages or beneficial effects: it intelligently adjusts the startup process according to different machine downtime, which not only ensures the safe startup conditions of the compressor, but also improves the system's adaptability and operating efficiency in different environments.

[0023] Furthermore, when controlling the outdoor fan to run, the controller is also configured to: acquire the running time of the outdoor fan; when the running time reaches the set running time limit of the outdoor fan, and the outdoor ambient temperature is still greater than the preset temperature threshold, control the outdoor fan to stop running, and issue an alarm prompt indicating that the outdoor ambient temperature is too high.

[0024] The above technical solution has the following advantages or beneficial effects: it not only effectively prevents the system risks caused by blindly starting up in extreme high temperature environments, but also improves the safety of equipment operation and user interaction experience.

[0025] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0026] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of the structure of an air conditioner according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the controller according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the structure of an air conditioner according to another embodiment of the present invention; Figure 4This is a flowchart of an air conditioner control method according to an embodiment of the present invention; Figure 5 This is a flowchart illustrating the control of the compressor and outdoor fan operating status based on indoor ambient temperature according to another embodiment of the present invention; Figure 6 This is a flowchart illustrating the control of the compressor and outdoor fan operating status based on the outdoor ambient temperature and a reference temperature according to an embodiment of the present invention. Figure 7 This is a flowchart illustrating the control of the compressor and outdoor fan operating status based on the outdoor ambient temperature and a reference temperature according to another embodiment of the present invention; Figure 8 This is a flowchart illustrating the control of the outdoor fan and compressor operating status according to a first downtime, based on an embodiment of the present invention. Figure 9 This is a flowchart illustrating the control of the outdoor fan and compressor operating status according to a first downtime, based on another embodiment of the present invention. Figure 10 This is a flowchart illustrating the control of the outdoor fan and compressor operating status according to a second downtime, based on an embodiment of the present invention. Figure 11 This is a flowchart illustrating the control of the outdoor fan and compressor operating status according to a second downtime, based on another embodiment of the present invention. Figure 12 This is a flowchart illustrating the control of the operating status of an outdoor fan based on its operating time, according to an embodiment of the present invention. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] In the description of this invention, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0029] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0030] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0031] This invention provides an air conditioner 10, with reference to... Figure 1 The air conditioner 10 includes a refrigeration system for exchanging heat with indoor air to meet cooling or heating needs.

[0032] The refrigeration system includes a compressor, a condenser, an electronic expansion valve, and an evaporator. In this invention, the air conditioner 10 performs a refrigeration cycle by using the compressor, condenser, electronic expansion valve, and evaporator. The refrigeration cycle includes a series of processes involving compression, condensation, expansion, and evaporation, and supplies refrigerant to the conditioned and heat-exchanged air.

[0033] The compressor compresses refrigerant gas under high temperature and pressure and discharges the compressed refrigerant gas. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and the heat is released to the surrounding environment through the condensation process.

[0034] The electronic expansion valve expands the high-temperature, high-pressure liquid refrigerant condensed in the condenser into a low-pressure liquid refrigerant. The evaporator evaporates the refrigerant that has expanded in the electronic expansion valve and returns the low-temperature, low-pressure refrigerant gas to the compressor.

[0035] The evaporator achieves a cooling effect by utilizing the latent heat of refrigerant evaporation to exchange heat with the material being cooled. Throughout the cycle, the air conditioner 10 can regulate the temperature of the indoor space.

[0036] The outdoor unit 2 of the air conditioner 10 refers to the part of the refrigeration cycle that includes the compressor and the outdoor heat exchanger. The indoor unit 1 of the air conditioner 10 includes the indoor heat exchanger, and an electronic expansion valve can be provided in either the indoor unit 1 or the outdoor unit 2.

[0037] The indoor and outdoor heat exchangers are used as condensers or evaporators. When the indoor heat exchanger is used as a condenser, the air conditioner 10 is used as a heater in heating mode, and when the indoor heat exchanger is used as an evaporator, the air conditioner 10 is used as a cooler in cooling mode.

[0038] The air conditioner 10 of this invention includes an indoor unit 1 and an outdoor unit 2, which can be configured as an integrated unit or a split unit. The indoor unit 1 can be configured as a wall-mounted unit, a ceiling-mounted unit, a ducted unit, etc., and the indoor unit 1 is installed on the top of the room.

[0039] Reference Figure 1 Taking indoor wall-mounted units as an example, indoor wall-mounted units are usually installed on indoor walls or other locations. For example, indoor cabinet units (not shown in the figure) are also a type of indoor unit 1.

[0040] Taking a split-type air conditioner as an example, the air conditioner 10 includes an indoor unit 1 and an outdoor unit 2. The outdoor unit 2 is usually installed outdoors and is used for heat exchange in the indoor environment.

[0041] Furthermore, as shown in the figure, the air conditioner 10 includes a controller 71 to control the operation of various components within the air conditioner 10, enabling each component to perform its predetermined functions. The air conditioner 10 also includes a control device 200, which, for example, is a remote control. This remote control has the function of communicating with the controller 71 using, for example, infrared or other communication methods. The remote control allows the user to perform various controls on the air conditioner 10, enabling interaction between the user and the air conditioner 10.

[0042] In this embodiment of the invention, the indoor unit 1 of the air conditioner 10 is located at the top or upper part of the room. Generally, the installation height of the indoor unit 1 is higher than the user's activity area. The indoor unit 1 includes a return air vent and an air outlet that communicate with the room. Indoor air passes through the return air vent into the indoor unit 1 and flows back into the room through the air outlet.

[0043] The refrigerant circulation loop in this invention allows the refrigerant to circulate within a circuit consisting of a compressor, condenser, electronic expansion valve, and evaporator. One of the condenser and evaporator is an outdoor heat exchanger, and the other is an indoor heat exchanger. The indoor heat exchanger exchanges heat with the air inside the indoor unit 1, and the outdoor unit 2 heat exchanger exchanges heat with the air inside the outdoor unit 2, thereby fulfilling the cooling or heating requirements of the air conditioner 10.

[0044] The indoor unit 1 also includes an indoor fan, which is located near the return air vent or the air outlet of the indoor heat exchanger. It is used to deliver the heat-exchanged air to the room. The indoor fan has multiple speed settings to change the airflow speed at the air outlet.

[0045] An air guide plate is installed at the air outlet. By changing its relative rotation angle with the air outlet, the air guide plate adjusts the direction of the airflow through the air outlet, thereby affecting the stratification of indoor air temperature.

[0046] In the embodiment shown in this invention, the air conditioner 10 further includes a controller 71, which is a device that can generate operation control signals according to instruction operation codes and timing signals to instruct the air conditioner 10 to execute control commands. For example, in response to a power-on or power-off command issued by a user, the controller 71 can perform an operation related to the object selected by the power-on or power-off command.

[0047] This invention also provides a hardware structure diagram of the controller 71, as shown in the embodiment. Figure 2 As shown, the controller 71 includes a processor 83, and optionally, a memory 82 and a communication interface 84 connected to the processor 83. The processor 83, memory 82, and communication interface 84 are connected via a bus 81.

[0048] Processor 83 can be a central processing unit (CPU), a general-purpose processor (NP), a network processor (NP), a digital signal processor (DSP), a microprocessor (Microcontroller 718), a programmable logic device (PLD), or any combination thereof. Processor 83 can also be any other device with processing capabilities, such as a circuit, device, or software module. Processor 83 can also include multiple CPUs, and processor 83 can be a single-core processor 83 or a multi-core processor 83. Here, processor 83 can refer to one or more devices, circuits, or processing cores used for processing data (e.g., computer program instructions).

[0049] The memory 82 can be a read-only memory (ROM) or other type of static storage device capable of storing static information and instructions, a random access memory (RAM) or other type of dynamic storage device capable of storing information and instructions, or an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD ROM) or other optical disc storage, optical disc storage (including compressed optical discs, laser discs, optical discs, digital universal optical discs, Blu-ray discs, etc.), a magnetic disk storage medium or other magnetic storage device, or any other medium capable of carrying or storing desired program code in the form of instructions or data structures and accessible by a computer. This embodiment of the invention does not impose any limitations on this. The memory 82 can exist independently or be integrated with the processor 83. The memory 82 may contain computer program code. The processor 83 is used to execute the computer program code stored in the memory 82, thereby implementing the air conditioner control method provided in this embodiment of the invention.

[0050] The communication interface 84 can be used to communicate with other devices or communication networks (such as Ethernet, radio access network (RAN), wireless local area networks (WLAN), etc.). The communication interface 84 can be a module, circuit, transceiver, or any device capable of communication.

[0051] Bus 81 can be a Peripheral Component Interconnect (PCI) bus 81 or an Extended Industry Standard Architecture (EISA) bus 81, etc. Bus 81 can be divided into address bus 81, data bus 81, control bus 81, etc. For ease of representation, Figure 2 The bus is represented by only one thick line, but this does not mean that there is only one bus 81 or one type of bus 81.

[0052] The following is for reference. Figure 3 An air conditioner according to an embodiment of the present invention is described.

[0053] Figure 3 This is a schematic diagram of the structure of an air conditioner according to an embodiment of the present invention. Figure 3As shown, an air conditioner 10 includes: a refrigerant circulation loop 11, an outdoor ambient temperature sensor 12, an exhaust temperature sensor 13, a coil temperature sensor 14, an outdoor fan 15, and a controller 71.

[0054] The refrigerant circulation loop 11 allows the refrigerant to circulate in a loop consisting of a compressor, condenser, expansion valve, and evaporator. One of the condensers and the other of the evaporator is an outdoor heat exchanger and the other is an indoor heat exchanger. The outdoor ambient temperature sensor 12 is used to detect the outdoor ambient temperature. The exhaust temperature sensor 13 is used to detect the exhaust temperature of the compressor. The coil temperature sensor 14 is used to detect the coil temperature of the outdoor heat exchanger. The outdoor fan 15 is used to drive outdoor air through the outdoor heat exchanger by rotation, so that the outdoor heat exchanger exchanges heat with the outdoor air.

[0055] The controller 71 is configured to: upon receiving a power-on command, determine the current operating state of the air conditioner 10 and obtain the outdoor ambient temperature corresponding to the current operating state; when the outdoor ambient temperature exceeds a preset temperature threshold, control the air conditioner 10 to execute a preset power-on control strategy to control the air conditioner 10 to start.

[0056] When executing the preset start-up control strategy, the controller 71 is configured to: when the air conditioner 10 is determined to be in the first operating state, acquire the exhaust temperature and / or the coil temperature, determine the reference temperature based on the exhaust temperature and / or the coil temperature, and control the operating state of the compressor and the outdoor fan 15 based on the outdoor ambient temperature, the reference temperature and the preset temperature threshold.

[0057] When it is determined that the air conditioner 10 is in the second operating state, the first shutdown time of the outdoor fan 15 and the compressor is obtained, and the operating state of the compressor and the outdoor fan 15 is controlled according to the first shutdown time and the first preset time threshold.

[0058] When the air conditioner 10 is determined to be in the third operating state, the second shutdown time of the outdoor fan 15 and the compressor is obtained, and the operating state of the compressor and the outdoor fan 15 is controlled according to the second shutdown time and the second preset time threshold.

[0059] In this embodiment, the outdoor ambient temperature sensor 12 is placed on the outside of the outdoor unit housing, exposed to the natural environment, to detect the outdoor ambient temperature in real time. When the outdoor fan 15 is running, the airflow passes through the outdoor ambient temperature sensor 12, enabling it to accurately sense the current outdoor ambient temperature.

[0060] Meanwhile, the exhaust temperature sensor 12 and / or the coil temperature sensor 13 are located inside the outdoor unit, near the compressor outlet and / or the condenser coil, and are not affected by direct sunlight. When the air conditioner 10 is not running for a long time, since there is no forced heat dissipation or heating effect from the outdoor fan 15, the temperature measured by these internal sensors can be approximated as the actual outdoor ambient temperature.

[0061] In addition, under normal climatic conditions, the outdoor ambient temperature usually shows a slow upward or downward trend throughout the day, and there will be no drastic fluctuations in a short period of time.

[0062] Therefore, to improve user experience, the air conditioner 10 should start as quickly as possible when the start-up conditions are met, without having to wait for the outdoor fan 15 to run for a period of time to obtain ambient temperature data. However, in certain special cases (such as the first power-on and the ambient temperature sensor not yet being stable), the system may allow the outdoor fan to start first, so that the airflow it drives can enable the ambient temperature sensor to obtain accurate temperature values ​​more quickly, thereby assisting in the determination of the start-up logic.

[0063] In a specific embodiment, when the controller 71 receives a power-on command, it first parses the command and confirms the current operating state of the air conditioner 10. The operating state refers to the historical operating status of the air conditioner 10 before this start-up, such as whether it is the first power-on, whether it is a restart after a short shutdown, or a restart after a complete shutdown. Based on the different operating states, the controller 71 will adopt corresponding start-up control strategies to determine whether the compressor should be allowed to start immediately, or whether it needs to be cooled by running the outdoor fan 15 first before starting.

[0064] During startup, the controller 71 first obtains the current outdoor ambient temperature and compares it with a preset temperature threshold. If the outdoor ambient temperature does not exceed the preset temperature threshold, the controller 71 directly controls the air conditioner 10 to enter the normal startup process; however, when the outdoor ambient temperature is higher than the preset temperature threshold, the controller 71 will execute a preset startup control strategy to ensure that the air conditioner 10 starts under safe conditions and prevent system abnormalities or damage caused by high temperatures.

[0065] Specifically, in the first operating state, the controller 71 acquires the exhaust temperature and / or coil temperature and determines a reference temperature accordingly. By comparing this reference temperature with the current outdoor ambient temperature, the controller 71 determines whether the safe start-up conditions are met, and then decides whether to allow the compressor to start directly, or to run the outdoor fan 15 for a period of time to lower the ambient temperature.

[0066] In the second operating state, the controller 71 will obtain the first shutdown time of the outdoor fan 15 and the compressor, and compare it with the first preset time threshold. Based on the comparison result, it will determine whether the compressor can be started directly, or whether the outdoor fan 15 needs to be run for a period of time to reduce the ambient temperature before starting the compressor.

[0067] In the third operating state, the controller 71 obtains the second shutdown time of the outdoor fan 15 and the compressor, and controls the operating state of the compressor and the outdoor fan 15 based on the comparison result of the second shutdown time and the second preset time threshold. For example, it controls the compressor to start directly, or controls the outdoor fan 15 to run for a period of time before starting the compressor.

[0068] This introduces a mechanism in the air conditioner 10 startup control that compares the ambient temperature sensor readings with a preset temperature threshold, and obtains more accurate ambient temperature information by activating the outdoor fan 15 under specific operating conditions. Through reasonable logical judgment, this ensures that the air conditioner 10 can start normally in most cases, avoiding unnecessary fault protection states due to misjudgments, thereby improving the reliability of system operation and enhancing the user experience.

[0069] In one embodiment of the present invention, the controller 71 is further configured to: control the compressor and the outdoor fan 15 to start directly when the outdoor ambient temperature does not exceed a preset temperature threshold.

[0070] For example, the outdoor ambient temperature is denoted as Tout, the preset temperature threshold is denoted as T1, and T1 = 50℃.

[0071] In this embodiment, when the detected outdoor ambient temperature Tout is less than or equal to a preset temperature threshold T1, i.e., Tout... When T1 is reached, the current outdoor ambient temperature Tout is determined to be within the safe operating range of the air conditioner 10. At this time, there is no need to perform operations such as running the outdoor fan 15 to cool down. The controller 71 controls the compressor and the outdoor fan 15 to start directly to control the air conditioner 10 to enter the normal operating state. This not only improves the response speed of the air conditioner 10, but also avoids affecting the user experience due to unnecessary delay in starting when the outdoor ambient temperature Tout is suitable, thereby achieving efficient, fast and stable start-up control.

[0072] In one embodiment of the present invention, when determining a reference temperature based on exhaust temperature and / or coil temperature, the controller 71 is configured to: use either exhaust temperature or coil temperature as the reference temperature when only exhaust temperature or coil temperature is acquired; use either exhaust temperature or coil temperature as the reference temperature when both exhaust temperature and coil temperature are acquired simultaneously and are equal; and use the lower of the two temperatures as the reference temperature when both exhaust temperature and coil temperature are acquired simultaneously and are not equal.

[0073] For example, the exhaust temperature is denoted as To, the coil temperature as Tc, and the reference temperature as T.

[0074] In this embodiment, when the controller 71 only obtains the exhaust temperature To, it uses the exhaust temperature To as the reference temperature T; or, when the controller 71 only obtains the coil temperature Tc, it uses the coil temperature Tc as the reference temperature T.

[0075] When controller 71 simultaneously acquires both coil temperature Tc and exhaust temperature To, and the exhaust temperature To and coil temperature Tc have the same temperature value, controller 71 can choose either one as the reference temperature T. However, when both coil temperature Tc and exhaust temperature To are acquired simultaneously, but their temperatures are not equal, controller 71 selects the lower temperature value as the reference temperature T. This is done to accurately reflect the actual outdoor ambient temperature while ensuring the compressor's safe operation, avoiding misjudgments, improving the start-up success rate, and enhancing the system's adaptability and stability under complex operating conditions. By rationally selecting a reference value closer to the actual outdoor ambient temperature, the accuracy and reliability of the air conditioner 10's start-up judgment in high-temperature environments are improved. This ensures safe system operation while avoiding misjudgments caused by sensor deviations or localized temperature rises, thereby improving the overall start-up success rate and user experience.

[0076] In one embodiment of the present invention, when determining the current operating state of the air conditioner 10, the controller 71 is configured to: determine that the air conditioner 10 is in a first operating state when the air conditioner 10 supplies power to the outdoor fan 15 and the compressor, and the outdoor fan 15 and the compressor are in the initial operating state; determine that the air conditioner 10 is in a second operating state when the outdoor fan 15 and the compressor meet the shutdown conditions and are in a shutdown state while remaining powered on during the operation of the air conditioner 10; and determine that the air conditioner 10 is in a third operating state when the air conditioner 10 receives a shutdown command and controls the outdoor fan 15 and the compressor to stop.

[0077] In this embodiment, the controller 71 is configured to identify the current startup and operation state of the air conditioner 10 based on the power supply status of the air conditioner 10 and the operation status of the outdoor fan 15 and the compressor. Specifically, when the air conditioner 10 first supplies power to the outdoor fan 15 and the compressor, and both are in the initial operation state, the controller 71 determines that the air conditioner 10 is in the first operation state; when the air conditioner 10 stops operating due to meeting preset shutdown conditions during normal operation, but the air conditioner 10 remains powered on, the controller 71 determines that the air conditioner 10 is in the second operation state, indicating that the air conditioner 10 is in the restart preparation stage after a short shutdown; and when the air conditioner 10 receives a whole-unit shutdown command from the user or the system, and controls the outdoor fan 15 and the compressor to completely stop operating and then restarts, the controller 71 determines that it is in the third operation state, that is, the restart state after the whole unit shutdown. Through the identification mechanism of the above three operating states, the controller 71 can adopt the corresponding start-up control strategy according to different start-up scenarios, thereby improving the start-up success rate and operating stability of the air conditioner 10 under different operating conditions.

[0078] In one embodiment of the present invention, such as Figure 3 As shown, the air conditioner 10 also includes: an indoor ambient temperature sensor 16 for detecting the indoor ambient temperature; and a controller 71 configured to: acquire the indoor ambient temperature; and when the indoor ambient temperature reaches a set indoor temperature threshold, determine that the outdoor fan 15 and the compressor meet the shutdown conditions, and control the outdoor fan 15 and the compressor to shut down.

[0079] In an embodiment, such as Figure 3 As shown, the air conditioner 10 also includes an indoor ambient temperature sensor 16 for real-time detection of the indoor ambient temperature.

[0080] During the operation of the air conditioner 10, the controller 71 continuously acquires the detected indoor ambient temperature and compares it with the set indoor temperature threshold. When the controller 71 determines that the current indoor ambient temperature has reached the set indoor temperature threshold, it determines that the outdoor fan 15 and compressor meet the shutdown conditions. At this time, the controller 71 controls the outdoor fan 15 and compressor to stop running, so as to enter the energy-saving standby state or prepare to enter the next operating cycle. This not only achieves precise regulation of the indoor ambient temperature, but also effectively avoids energy waste caused by excessive cooling or heating, improving the operating efficiency of the air conditioner 10 and the user's comfort.

[0081] In one embodiment of the present invention, when controlling the operating state of the compressor and the outdoor fan 15 according to the outdoor ambient temperature Tout, the reference temperature T and the preset temperature threshold T1, the controller 71 is configured to: control the outdoor fan 15 to remain in a stopped operating state and control the compressor to start when the outdoor ambient temperature Tout is greater than or equal to the reference temperature T and the reference temperature T is less than or equal to the preset temperature threshold T1.

[0082] In this embodiment, when the detected outdoor ambient temperature Tout is greater than or equal to the reference temperature T, and the reference temperature T is less than or equal to the preset temperature threshold T1, i.e., Tout... T and T At time T1, the controller 71 determines that the current outdoor ambient temperature Tout is within the safe operating range, and there is no need for pre-running the outdoor fan 15 for cooling. At this time, the controller 71 keeps the outdoor fan 15 stopped and directly starts the compressor to quickly enter cooling or heating operation. This control strategy, while ensuring system safety, avoids unnecessary startup of the outdoor fan 15, improves response speed, reduces energy consumption, and enhances the start-up efficiency and user experience of the air conditioner 10 at suitable ambient temperatures.

[0083] In one embodiment of the present invention, when controlling the operating state of the compressor and the outdoor fan 15 according to the outdoor ambient temperature Tout, the reference temperature T, and the preset temperature threshold T1, the controller 71 is further configured to: control the outdoor fan 15 to run when the outdoor ambient temperature Tout is greater than or equal to the reference temperature T, and the reference temperature T is greater than the preset temperature threshold T1, until the outdoor ambient temperature Tout is less than or equal to the preset temperature threshold T1, then control the outdoor fan 15 to stop running and control the compressor to start; and control the outdoor fan 15 to run when the outdoor ambient temperature Tout is less than the reference temperature T, until the outdoor ambient temperature Tout is less than or equal to the preset temperature threshold T1, then control the outdoor fan 15 to stop running and control the compressor to start.

[0084] In this embodiment, when the controller 71 detects that the outdoor ambient temperature Tout is greater than or equal to the reference temperature T, and the reference temperature T exceeds the preset temperature threshold T1, i.e., Tout... When T > T1, the current outdoor ambient temperature Tout is determined to be high, posing a risk of activation. In this case, controller 71 prioritizes starting the outdoor fan 15 to reduce the outdoor ambient temperature Tout through airflow circulation. After the outdoor fan 15 has been running for a period of time, if the detected outdoor ambient temperature Tout is less than or equal to the reference temperature T1, i.e., Tout... T1 and controller 71 control the outdoor fan 15 to stop running and control the compressor to start, entering normal operation.

[0085] In addition, when the controller 71 detects that the outdoor ambient temperature Tout is less than the reference temperature T, i.e., Tout < T, it also controls the outdoor fan 15 to operate to accelerate the stabilization and decrease of the outdoor ambient temperature Tout. After the outdoor ambient temperature Tout is reduced to not exceeding T1, i.e., Tout ≤ T1, it controls the outdoor fan 15 to stop operating and starts the compressor. By controlling the outdoor fan 15 in this way to assist the startup of the air conditioner 10, the startup conditions of the air conditioner 10 in a high-temperature environment can be effectively improved, the success rate and safety of system startup can be enhanced, and at the same time, the risks of mis-startup or compressor damage caused by too high ambient temperature can be avoided.

[0086] In an embodiment of the present invention, when controlling the operating states of the compressor and the outdoor fan 15 according to the first shutdown time and the first preset time threshold, the controller 71 is configured to: when the first shutdown time is less than or equal to the first preset time threshold, control the outdoor fan 15 to remain in the stopped operating state and control the compressor to start; when the first shutdown time is greater than the first preset time threshold, control the outdoor fan 15 to operate until the outdoor ambient temperature Tout is less than or equal to the preset temperature threshold T1, and then control the outdoor fan 15 to stop operating and control the compressor to start.

[0087] Wherein, for example, the first shutdown time is denoted as Time1, and the first preset time threshold is denoted as Ts1.

[0088] In the embodiment, when the controller 71 determines that the first shutdown time Time1 of the outdoor fan 15 and the compressor is less than or equal to the first preset time threshold Ts1, i.e., Time1 ≤ Ts1, it indicates that the air conditioner 10 is in a short-term shutdown state, the current outdoor ambient temperature Tout has not changed significantly and is still within the safe operating range. Therefore, the controller 71 controls the outdoor fan 15 to remain stopped and directly starts the compressor to improve the response speed and reduce energy consumption.

[0089] When the first shutdown time Time1 is greater than the first preset time threshold Ts1, i.e., Time1 > Ts1, it indicates that the air conditioner 10 has been shutdown for a long time, and the outdoor ambient temperature Tout may have risen to a relatively high level. At this time, the controller 71 preferentially controls the outdoor fan 15 to operate to accelerate heat dissipation through air circulation. After detecting that the outdoor ambient temperature Tout is reduced to less than or equal to the preset temperature threshold T1, i.e., Tout ≤ T1, it controls the outdoor fan 15 to stop operating and starts the compressor. In this way, the startup strategy can be intelligently adjusted according to different shutdown durations, which not only ensures the safety of system operation but also improves the startup efficiency and adaptability of the air conditioner 10 under different working conditions.

[0090] In one embodiment of the present invention, when controlling the operating state of the compressor and the outdoor fan 15 according to the second shutdown time and the second preset time threshold, the controller 71 is configured to: control the outdoor fan 15 to remain in a stopped state and control the compressor to start when the second shutdown time is less than or equal to the second preset time threshold; control the outdoor fan 15 to run when the second shutdown time is greater than the second preset time threshold until the outdoor ambient temperature Tout is less than or equal to the preset temperature threshold T1, then control the outdoor fan 15 to stop running and control the compressor to start.

[0091] For example, the second downtime is denoted as Time2, and the second preset time threshold is denoted as Ts2.

[0092] In this embodiment, when the second downtime Time2 is detected to be less than or equal to the second preset time threshold Ts2, i.e., Time2 Ts2 indicates that although the air conditioner 10 has experienced a complete shutdown, the shutdown time is short and the current outdoor ambient temperature Tout is still within the safe operating range. Therefore, the controller 71 controls the outdoor fan 15 to remain stopped and directly starts the compressor to improve the system response speed and reduce unnecessary energy consumption.

[0093] When the second downtime Time2 is greater than the second preset time threshold Ts2, i.e. Time2 Ts2 indicates that the air conditioner 10 has been shut down for a long time and may be in a high-temperature environment. At this time, the controller 71 prioritizes starting the outdoor fan 15 for pre-operation, reducing the outdoor ambient temperature Tout through air flow. When it is confirmed that the outdoor ambient temperature Tout is less than or equal to the preset temperature threshold T1, that is, Tout... At time T1, the outdoor fan 15 is stopped and the compressor is started. This intelligently adjusts the startup process according to different downtime of the whole unit, which not only ensures the safe startup conditions of the compressor, but also improves the system's adaptability and operating efficiency in different environments.

[0094] In one embodiment of the present invention, when controlling the outdoor fan 15 to run, the controller 71 is further configured to: acquire the running time of the outdoor fan 15; when the running time reaches the set running time limit of the outdoor fan 15 and the outdoor ambient temperature is still greater than the preset temperature threshold, control the outdoor fan to stop running and issue an alarm prompt indicating that the outdoor ambient temperature is too high.

[0095] For example, the running time can be denoted as Time3, and the running time threshold can be denoted as Ts3.

[0096] In this embodiment, when the controller 71 detects that the outdoor fan 15's running time Time3 has reached the set running time limit Ts3 (e.g., 3 minutes), but the outdoor ambient temperature Tout is still higher than the preset temperature threshold T1 (i.e., Time3 = Ts3 and Tout > T1), it determines that the current outdoor ambient temperature Tout is continuously in a high-temperature state, exceeding the safe start-up range of the air conditioner 10. At this time, the controller 71 controls the outdoor fan 15 to stop running and outputs an alarm message to indicate that the outdoor ambient temperature is too high, reminding the user or installer that the current environment is not suitable for the normal start-up of the air conditioner 10, and that appropriate measures need to be taken to improve the heat dissipation conditions or check the installation environment. This not only effectively prevents the system risks caused by blindly starting in extreme high-temperature environments, but also improves the safety of the air conditioner 10's operation and the user interaction experience.

[0097] Furthermore, during the startup attempts in the first, second, and third operating states, the outdoor fan 15 operates only once under the control of the controller, without intermittent repeated startups. This avoids increased energy consumption and damage caused by frequent start-stop of the outdoor fan 15, while ensuring that the system's judgment of the outdoor ambient temperature Tout is deterministic and consistent during a single startup, thus improving the stability and reliability of the control logic.

[0098] According to an embodiment of the present invention, when the air conditioner 10 receives a start-up command, it determines its current operating state and acquires the outdoor ambient temperature corresponding to the current operating state. Then, it compares the outdoor ambient temperature with a preset temperature threshold. If the outdoor ambient temperature exceeds the preset temperature threshold, it selects a start-up control strategy corresponding to the current operating state of the air conditioner 10. That is, when the air conditioner 10 is in a first operating state, it determines a reference temperature based on the acquired exhaust temperature and / or coil temperature, and controls the operating state of the compressor and outdoor fan 15 based on the outdoor ambient temperature, the reference temperature, and the preset temperature threshold; when the air conditioner 10 is in a second operating state, it controls the operating state of the compressor and outdoor fan 15 based on the outdoor ambient temperature, the reference temperature, and the preset temperature threshold. The operating status of the compressor and the outdoor fan 15 is controlled by comparing the first shutdown time of the outdoor fan 15 with the first preset time threshold. When the air conditioner 10 is in the third operating state, the operating status of the compressor and the outdoor fan 15 is controlled by comparing the second shutdown time of the outdoor fan 15 and the compressor with the second preset time threshold, thereby controlling the start of the air conditioner 10. This allows for obtaining a more accurate outdoor ambient temperature under specific operating conditions, and through corresponding logical judgments, ensures that the air conditioner 10 can start normally in most cases, avoiding unnecessary fault protection states due to misjudgment, thereby improving the reliability of the air conditioner 10's start-up and operation, and enhancing the user experience.

[0099] The following is for reference. Figures 4-12 This invention describes a control method for an air conditioner according to an embodiment of the present invention.

[0100] like Figure 4 As shown, the air conditioner control method of this embodiment includes at least step S1.

[0101] Step S1: When the start-up command is received, the current operating state of the air conditioner is determined and the outdoor ambient temperature corresponding to the current operating state is obtained. When the outdoor ambient temperature exceeds the preset temperature threshold, the air conditioner is controlled to execute the preset start-up control strategy to control the air conditioner to start.

[0102] The preset start-up control strategy includes: when the air conditioner is determined to be in the first operating state, acquiring the exhaust temperature and / or coil temperature, determining a reference temperature based on the exhaust temperature and / or coil temperature, and controlling the operating state of the compressor and outdoor fan based on the outdoor ambient temperature, the reference temperature, and a preset temperature threshold; when the air conditioner is determined to be in the second operating state, acquiring the first shutdown time of the outdoor fan and compressor, and controlling the operating state of the compressor and outdoor fan based on the first shutdown time and a first preset time threshold; when the air conditioner is determined to be in the third operating state, acquiring the second shutdown time of the outdoor fan and compressor, and controlling the operating state of the compressor and outdoor fan based on the second shutdown time and a second preset time threshold.

[0103] In one embodiment of the present invention, the control method of the air conditioner further includes: when the outdoor ambient temperature does not exceed a preset temperature threshold, controlling the compressor and the outdoor fan to start directly.

[0104] In one embodiment of the present invention, determining the reference temperature based on the exhaust temperature and / or the coil temperature includes: when only the exhaust temperature or the coil temperature is obtained, using the exhaust temperature or the coil temperature as the reference temperature; when both the exhaust temperature and the coil temperature are obtained simultaneously and are equal, using either the exhaust temperature or the coil temperature as the reference temperature; when both the exhaust temperature and the coil temperature are obtained simultaneously and are not equal, using the temperature with the lower value between the exhaust temperature and the coil temperature as the reference temperature.

[0105] In one embodiment of the present invention, determining the current operating state of the air conditioner includes: when the air conditioner supplies power to the outdoor fan and compressor, and the outdoor fan and compressor are in their initial operating state, the air conditioner is determined to be in a first operating state; when the air conditioner is in operation, and the outdoor fan and compressor meet the shutdown conditions and are in a shutdown state while remaining powered on, the air conditioner is determined to be in a second operating state; when the air conditioner receives a shutdown command and controls the outdoor fan and compressor to stop, the air conditioner is determined to be in a third operating state.

[0106] In one embodiment of the present invention, such as Figure 5As shown, the control method of the air conditioner also includes: acquiring the indoor ambient temperature; when the indoor ambient temperature reaches the set indoor temperature threshold, determining that the outdoor fan and compressor meet the shutdown conditions, and controlling the outdoor fan and compressor to shut down.

[0107] In one embodiment of the present invention, such as Figure 6 As shown, when controlling the operating status of the compressor and the outdoor fan based on the outdoor ambient temperature, the reference temperature and the preset temperature threshold, the following are included: when the outdoor ambient temperature is greater than or equal to the reference temperature and the reference temperature is less than or equal to the preset temperature threshold, the outdoor fan is controlled to remain in a stopped state and the compressor is controlled to start.

[0108] In one embodiment of the present invention, such as Figure 7 As shown, when controlling the operating status of the compressor and the outdoor fan based on the outdoor ambient temperature, the reference temperature, and the preset temperature threshold, the following steps are taken: when the outdoor ambient temperature is greater than or equal to the reference temperature, and the reference temperature is greater than the preset temperature threshold, the outdoor fan is controlled to run until the outdoor ambient temperature is less than or equal to the preset temperature threshold, at which point the outdoor fan is controlled to stop running and the compressor is controlled to start; when the outdoor ambient temperature is less than the reference temperature, the outdoor fan is controlled to run until the outdoor ambient temperature is less than or equal to the preset temperature threshold, at which point the outdoor fan is controlled to stop running and the compressor is controlled to start.

[0109] In one embodiment of the present invention, when controlling the operating state of the compressor and the outdoor fan according to the first shutdown time and the first preset time threshold, the method includes: Figure 8 As shown, when the first downtime is less than or equal to the first preset time threshold, the outdoor fan is kept stopped, and the compressor is started; Figure 9 As shown, when the first downtime is greater than the first preset time threshold, the outdoor fan is controlled to run until the outdoor ambient temperature is less than or equal to the preset temperature threshold, at which point the outdoor fan is controlled to stop running and the compressor is controlled to start.

[0110] In one embodiment of the present invention, when controlling the operating state of the compressor and the outdoor fan according to the second shutdown time and the second preset time threshold, the method includes: Figure 10 As shown, when the second shutdown time is less than or equal to the second preset time threshold, the outdoor fan is kept stopped, and the compressor is started; Figure 11 As shown, when the second shutdown time is greater than the second preset time threshold, the outdoor fan is controlled to run until the outdoor ambient temperature is less than or equal to the preset temperature threshold, at which point the outdoor fan is controlled to stop running and the compressor is controlled to start.

[0111] In one embodiment of the present invention, such as Figure 12As shown, when controlling the outdoor fan to run, the process includes: acquiring the running time of the outdoor fan; when the running time reaches the set running time limit of the outdoor fan and the outdoor ambient temperature is still greater than the preset temperature threshold, controlling the outdoor fan to stop running and issuing an alarm to indicate that the outdoor ambient temperature is too high.

[0112] According to the control method of an air conditioner according to an embodiment of the present invention, when the air conditioner receives a start-up command, it determines the current operating state of the air conditioner, obtains the outdoor ambient temperature corresponding to the current operating state, and then compares the outdoor ambient temperature with a preset temperature threshold. When the outdoor ambient temperature exceeds the preset temperature threshold, a start-up control strategy corresponding to the current operating state of the air conditioner is selected. That is, when the air conditioner is in a first operating state, a reference temperature is determined based on the obtained exhaust temperature and / or coil temperature, and the operating states of the compressor and outdoor fan are controlled based on the outdoor ambient temperature, the reference temperature, and the preset temperature threshold; when the air conditioner is in a second operating state, according to... The comparison between the first shutdown time of the compressor and the outdoor fan and the first preset time threshold determines the operating status of the compressor and the outdoor fan. When the air conditioner is in the third operating state, the comparison between the second shutdown time of the outdoor fan and the compressor and the second preset time threshold determines the operating status of the compressor and the outdoor fan, thereby controlling the start-up of the air conditioner. This allows for a more accurate acquisition of the outdoor ambient temperature under specific operating conditions. Through corresponding logical judgments, it ensures that the air conditioner can start normally in most cases, avoiding unnecessary fault protection states due to misjudgment. This improves the reliability of the air conditioner's start-up and operation, and enhances the user experience.

[0113] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0114] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An air conditioner characterized by comprising: include: The refrigerant circulation loop allows the refrigerant to circulate in a loop consisting of a compressor, condenser, expansion valve, and evaporator. One of the condensers and the other of the evaporator is an outdoor heat exchanger and the other is an indoor heat exchanger. Outdoor ambient temperature sensor, used to detect outdoor ambient temperature; An exhaust temperature sensor is used to detect the exhaust temperature of the compressor; A coil temperature sensor is used to detect the coil temperature of the outdoor heat exchanger. An outdoor fan is used to drive outdoor air through the outdoor heat exchanger by rotation, so that the outdoor heat exchanger exchanges heat with the outdoor air. The controller is configured to: Upon receiving a power-on command, the system determines the current operating state of the air conditioner and obtains the outdoor ambient temperature corresponding to the current operating state. When the outdoor ambient temperature exceeds a preset temperature threshold, the system controls the air conditioner to execute a preset power-on control strategy to start the air conditioner. When executing the preset power-on control strategy, the controller is configured as follows: When the air conditioner is determined to be in the first operating state, the exhaust temperature and / or the coil temperature are acquired, a reference temperature is determined based on the exhaust temperature and / or the coil temperature, and the operating state of the compressor and the outdoor fan is controlled based on the outdoor ambient temperature, the reference temperature and the preset temperature threshold. When it is determined that the air conditioner is in the second operating state, the first shutdown time of the outdoor fan and the compressor is obtained, and the operating state of the compressor and the outdoor fan is controlled according to the first shutdown time and the first preset time threshold. When the air conditioner is determined to be in the third operating state, the second shutdown time of the outdoor fan and the compressor is obtained, and the operating state of the compressor and the outdoor fan is controlled according to the second shutdown time and the second preset time threshold.

2. The air conditioner of claim 1, wherein The controller is also configured to: When the outdoor ambient temperature does not exceed the preset temperature threshold, the compressor and the outdoor fan are directly started.

3. The air conditioner according to claim 1, characterized in that, When determining the reference temperature based on the exhaust temperature and / or the coil temperature, the controller is configured to: When only the exhaust temperature or the coil temperature is obtained, the exhaust temperature or the coil temperature is used as the reference temperature; When the exhaust temperature and the coil temperature are obtained simultaneously, and the exhaust temperature and the coil temperature are equal, either the exhaust temperature or the coil temperature is taken as the reference temperature. When the exhaust temperature and the coil temperature are obtained simultaneously, and the exhaust temperature and the coil temperature are not equal, the temperature with the lower value between the exhaust temperature and the coil temperature is taken as the reference temperature.

4. The air conditioner according to claim 1, characterized in that, When determining the current operating state of the air conditioner, the controller is configured to: When the air conditioner supplies power to the outdoor fan and the compressor, and the outdoor fan and the compressor are in the initial operating state, the air conditioner is determined to be in the first operating state; When the outdoor fan and the compressor are in a stopped state but remain powered on after meeting the shutdown conditions during the operation of the air conditioner, the air conditioner is determined to be in the second operating state. When the air conditioner receives a shutdown command, it controls the outdoor fan and the compressor to stop, thus determining that the air conditioner is in the third operating state.

5. The air conditioner according to claim 4, characterized in that, Also includes: Indoor ambient temperature sensor, used to detect indoor ambient temperature; The controller is configured to: Obtain the indoor ambient temperature; When the indoor ambient temperature reaches the set indoor temperature threshold, it is determined that the outdoor fan and the compressor meet the shutdown conditions, and the outdoor fan and the compressor are controlled to shut down.

6. The air conditioner according to claim 1, characterized in that, When controlling the operating status of the compressor and the outdoor fan based on the outdoor ambient temperature, the reference temperature, and the preset temperature threshold, the controller is configured to: When the outdoor ambient temperature is greater than or equal to the reference temperature, and the reference temperature is less than or equal to the preset temperature threshold, the outdoor fan is controlled to remain in a stopped state, and the compressor is controlled to start.

7. The air conditioner according to claim 6, characterized in that, When controlling the operating status of the compressor and the outdoor fan based on the outdoor ambient temperature, the reference temperature, and the preset temperature threshold, the controller is further configured to: When the outdoor ambient temperature is greater than or equal to the reference temperature, and the reference temperature is greater than the preset temperature threshold, the outdoor fan is controlled to run until the outdoor ambient temperature is less than or equal to the preset temperature threshold, at which point the outdoor fan is controlled to stop running and the compressor is controlled to start. When the outdoor ambient temperature is lower than the reference temperature, the outdoor fan is controlled to run until the outdoor ambient temperature is lower than or equal to the preset temperature threshold, at which point the outdoor fan is controlled to stop running and the compressor is controlled to start.

8. The air conditioner according to claim 1, characterized in that, When controlling the operating status of the compressor and the outdoor fan according to the first shutdown time and the first preset time threshold, the controller is configured to: When the first downtime is less than or equal to the first preset time threshold, the outdoor fan is controlled to remain in a stopped state, and the compressor is controlled to start. When the first downtime is greater than the first preset time threshold, the outdoor fan is controlled to run until the outdoor ambient temperature is less than or equal to the preset temperature threshold, at which point the outdoor fan is controlled to stop running and the compressor is controlled to start.

9. The air conditioner according to claim 1, characterized in that, When controlling the operating status of the compressor and the outdoor fan according to the second downtime and the second preset time threshold, the controller is configured to: When the second shutdown time is less than or equal to the second preset time threshold, the outdoor fan is controlled to remain in a stopped state, and the compressor is controlled to start. When the second shutdown time is greater than the second preset time threshold, the outdoor fan is controlled to run until the outdoor ambient temperature is less than or equal to the preset temperature threshold, at which point the outdoor fan is controlled to stop running and the compressor is controlled to start.

10. The air conditioner according to any one of claims 7-9, characterized in that, When controlling the outdoor fan to operate, the controller is also configured to: Obtain the operating time of the outdoor fan; When the running time reaches the set running time limit of the outdoor fan, and the outdoor ambient temperature is still greater than the preset temperature threshold, the outdoor fan is controlled to stop running, and an alarm prompt is issued to indicate that the outdoor ambient temperature is too high.

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