Air conditioner and control method thereof

Abstract

The application provides an air conditioner and a control method thereof. The air conditioner comprises a controller configured to: when a control instruction for instructing the air conditioner to perform refrigeration or dehumidification is received, acquire initial required refrigeration amounts of indoor units, acquire indoor humidities corresponding to the indoor units, first state information corresponding to a first air guide assembly, and second state information corresponding to a second air guide assembly, determine actual required refrigeration amounts of the indoor units according to the acquired information, determine an actual total required refrigeration amount of the air conditioner, further determine a target operating frequency of a compressor, and control the compressor to operate according to the target operating frequency. The application can improve the refrigeration effect under conditions such as high humidity, large air volume, and large guide plate opening degree, which are not prone to condensation, and avoid the problem of easy condensation under conditions such as small humidity, small air volume, small guide plate angle, and multi-angle air supply, thereby improving the reliability of the air conditioner and the user experience.

Description

Technical Field

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

[0002] Air conditioners are widely used electrical appliances in people's lives. They play an important role in regulating indoor temperature, providing users with a healthy and comfortable indoor environment to meet their normal work, life, and study needs. Currently, in summer, the weather is usually hot and humid, especially in coastal areas where humidity is very high. Wall-mounted, floor-standing, and ceiling-mounted air conditioners often produce condensation and dripping water when cooling or dehumidifying, leading to a poor user experience and complaints.

[0003] In existing technologies, condensation problems can be prevented in various ways. For example, the temperature of key condensation points and the dew point temperature in the current environment can be obtained and compared. If the temperature of the key condensation point is determined to be less than or equal to the dew point temperature, the target frequency is reduced, and the frequency reduction rate is adjusted according to the difference between the temperature of the key condensation point and the dew point temperature to ensure the best cooling effect of the air conditioner without condensation. Alternatively, in anti-condensation control mode, anti-condensation actions can be executed according to a preset control strategy, including reducing the opening of the air conditioner's expansion valve to reduce the refrigerant flow into the evaporator, reducing the indoor cooling load, and increasing the evaporator temperature to achieve the anti-condensation effect. After executing the anti-condensation action, the temperature difference between the indoor temperature and the air conditioner's evaporator temperature is used as a basis to determine whether to execute a compressor frequency reduction correction action. This makes the anti-condensation design more comprehensive and the anti-condensation effect more effective. However, none of the above methods address how to solve the condensation problem caused by multi-angle air supply under high humidity cooling or dehumidification conditions. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art.

[0005] Therefore, one objective of this invention is to provide an air conditioner that can improve the cooling effect under conditions where condensation is less likely to occur, such as high humidity, large air volume, and large guide plate opening, while avoiding the problem of condensation easily occurring under conditions where humidity is low but air volume, guide plate angle is small, and multi-angle air supply occurs, thereby improving the reliability of the air conditioner and the user experience.

[0006] Therefore, a second objective of this invention is to provide a control method for an air conditioner.

[0007] To achieve the above objectives, a first aspect of the present invention provides an air conditioner comprising: an outdoor unit and at least one indoor unit connected to the outdoor unit; a refrigerant circulation loop for circulating refrigerant in a loop consisting of a compressor, a condenser, an expansion valve, an evaporator, and a four-way valve; a refrigeration system for performing heat exchange between refrigerant and air in a compression refrigeration cycle of the refrigerant circulation loop, the refrigeration system including the compressor for compressing low-temperature, low-pressure refrigerant gas into high-temperature, high-pressure refrigerant gas and discharging it to the condenser; an outdoor heat exchanger and an indoor heat exchanger, wherein... In this system, one unit functions as the condenser, and the other as the evaporator. Each indoor unit includes a first air guide assembly, a second air guide assembly, and a humidity sensor. The first air guide assembly is vertically positioned at the air outlet of the corresponding indoor unit and can swing horizontally or remain oscillating to adjust the air outlet's horizontal angle. The second air guide assembly is horizontally positioned at the air outlet of the corresponding indoor unit and can swing vertically or remain oscillating to adjust the air outlet's vertical angle. The humidity sensor is used for... The system acquires the indoor humidity of the environment where the corresponding indoor unit is located; a controller, the controller being connected to the compressor, the first air guide assembly, the second air guide assembly, and the humidity sensor of each indoor unit, the controller being configured to: upon receiving a control command instructing the air conditioner to perform cooling or dehumidification, acquire the initial required cooling capacity of each indoor unit, and acquire the indoor humidity, first state information corresponding to the first air guide assembly, and second state information corresponding to the second air guide assembly for each indoor unit, wherein the first state information includes the current oscillation state of the first air guide assembly and the air outlet angle in the horizontal direction, and the second state information includes the current oscillation state of the second air guide assembly and the air outlet angle in the vertical direction; determine the actual required cooling capacity of each indoor unit based on the initial required cooling capacity, the indoor humidity, the first state information, and the second state information; determine the actual total required cooling capacity of the air conditioner based on the actual required cooling capacity of each indoor unit; determine the target operating frequency of the compressor based on the actual total required cooling capacity; and control the compressor to operate based on the target operating frequency.

[0008] According to an embodiment of the present invention, when the air conditioner is cooling or dehumidifying, it can acquire the indoor humidity corresponding to each indoor unit, the first state information corresponding to the first air guide component, and the second state information corresponding to the second air guide component, and comprehensively calculate the actual cooling capacity required by the indoor unit. Based on the actual cooling capacity required by the indoor unit, the actual total cooling capacity required by the air conditioner is determined. Furthermore, the target operating frequency of the compressor can be determined based on the actual total cooling capacity required, and the operating state of the compressor can be controlled. Thus, when cooling or dehumidifying, by comprehensively controlling the operating frequency of the compressor based on the indoor humidity, the operating state of the air guide component, and the air outlet angle, the cooling effect can be improved when the humidity is high, the air volume is high, the guide plate opening is large, and condensation is not easy. At the same time, it avoids the problem of condensation that is easy to occur when the humidity is low, but the air volume, the guide plate angle is small, and the air is delivered from multiple angles. This improves the reliability of the air conditioner and the user experience.

[0009] In some embodiments, when determining the actual cooling capacity required for each indoor unit based on the initial cooling capacity required for each indoor unit, the indoor humidity, the first state information, and the second state information, the controller is configured to: determine a corresponding humidity coefficient based on the indoor humidity; determine a corresponding air outlet coefficient based on the first state information and the second state information; and correct the initial cooling capacity required based on the humidity coefficient and the air outlet coefficient to obtain the actual cooling capacity required.

[0010] In some embodiments, when determining the corresponding humidity coefficient based on the indoor humidity, the controller is configured to: obtain the humidity coefficient corresponding to the indoor humidity by linear interpolation based on a pre-calibrated humidity and humidity coefficient fitting curve.

[0011] In some embodiments, when determining the corresponding humidity coefficient based on the indoor humidity, the controller is configured to: obtain the humidity coefficient corresponding to the indoor humidity by querying a pre-calibrated two-dimensional relationship mapping table of humidity and humidity coefficient, wherein the two-dimensional relationship mapping table of humidity and humidity coefficient includes multiple sets of correspondences between humidity and humidity coefficient, and the multiple sets of correspondences between humidity and humidity coefficient include the correspondence between the indoor humidity and its corresponding humidity coefficient.

[0012] In some embodiments, the air outlet coefficient includes an air outlet angle coefficient. When determining the corresponding air outlet coefficient based on the first state information and the second state information, the controller is configured to: when the first air guide component is not oscillating and the air outlet angle in the horizontal direction is within a first preset angle range, and the second air guide component is not oscillating, determine the air outlet angle coefficient based on the air outlet angle in the vertical direction, wherein different air outlet angles in the vertical direction correspond to different air outlet angle coefficients.

[0013] In some embodiments, the air outlet coefficient includes an air outlet angle coefficient and a first oscillation coefficient corresponding to the first air guide component. When determining the corresponding air outlet coefficient based on the first state information and the second state information, the controller is configured to: determine the air outlet angle coefficient based on the air outlet angle in the vertical direction when the second air guide component is not oscillating and the first air guide component is oscillating or the air outlet angle in the horizontal direction is outside a first preset angle range, and obtain the first oscillation coefficient pre-stored in the indoor unit, wherein different air outlet angles in the vertical direction correspond to different air outlet angle coefficients.

[0014] In some embodiments, the air outlet coefficient includes the second swing coefficient corresponding to the second air guide component. When determining the corresponding air outlet coefficient based on the first state information and the second state information, the controller is configured to: when the first air guide component is not swinging and the air outlet angle in the horizontal direction is within a first preset angle range, and the second air guide component is swinging, obtain the second swing coefficient pre-stored in the indoor unit.

[0015] In some embodiments, the air outlet coefficient includes a first swing coefficient corresponding to the first air guide component and a second swing coefficient corresponding to the second air guide component. When determining the corresponding air outlet coefficient based on the first state information and the second state information, the controller is configured to: when the first air guide component starts to swing or the air outlet is outside a first preset angle range in the horizontal direction, and the second air guide component starts to swing, acquire the first swing coefficient and the second swing coefficient pre-stored in the indoor unit.

[0016] In some embodiments, when the initial required cooling capacity is corrected according to the humidity coefficient and the air outlet coefficient to obtain the actual required cooling capacity, the controller is configured to: perform a multiplication operation on the initial required cooling capacity, the humidity coefficient, and the air outlet coefficient to correct the initial required cooling capacity and obtain the actual required cooling capacity.

[0017] In some embodiments, when determining the actual total cooling capacity of the air conditioner based on the actual cooling capacity of each indoor unit, the controller is configured to: sum the actual cooling capacity of each indoor unit, and then multiply the sum by a pre-stored outdoor ambient temperature correction coefficient to obtain the actual total cooling capacity of the air conditioner.

[0018] In some embodiments, when determining the target operating frequency of the compressor based on the actual total cooling demand, the controller is configured to perform the following calculations:

[0019] Fre_aim = Kao × Q + Kbo;

[0020] Where Fre_aim is the target operating frequency, Q is the actual total cooling capacity required by the air conditioner, and Kao and Kbo are two constants determined based on the compressor output capacity curve.

[0021] In some embodiments, when obtaining the initial cooling capacity requirement of each indoor unit, the controller is configured to: determine the initial cooling capacity requirement corresponding to each indoor unit according to the parameters pre-stored in each indoor unit, wherein the parameters include: indoor unit capacity code, model correction coefficient, temperature difference correction coefficient, air volume correction coefficient, high efficiency correction coefficient, single-use ambient temperature correction coefficient, and single-use capacity correction coefficient.

[0022] To achieve the above objectives, a second aspect of the present invention provides a control method for an air conditioner, the method comprising the following steps: upon receiving a control command instructing the air conditioner to perform cooling or dehumidification, acquiring the initial required cooling capacity of each indoor unit, and acquiring the indoor humidity corresponding to each indoor unit, first state information corresponding to a first air guide component, and second state information corresponding to a second air guide component, wherein the first state information includes the current oscillation state of the first air guide component and the air outlet angle in the horizontal direction, and the second state information includes the current oscillation state of the second air guide component and the air outlet angle in the vertical direction, wherein the first air guide component is vertically disposed at the air outlet of the corresponding indoor unit. The first air guide component can swing horizontally or stop swinging to adjust the air outlet angle in the horizontal direction. The second air guide component is horizontally positioned at the air outlet of the corresponding indoor unit. The second air guide component can swing vertically or stop swinging to adjust the air outlet angle in the vertical direction. The actual cooling capacity required by each indoor unit is determined based on the initial cooling capacity requirement, the indoor humidity, the first state information, and the second state information. The actual total cooling capacity required by the air conditioner is determined based on the actual cooling capacity required by each indoor unit. The target operating frequency of the compressor is determined based on the actual total cooling capacity required. The compressor is controlled to operate based on the target operating frequency.

[0023] According to the air conditioner control method of the present invention, during cooling or dehumidification, the indoor humidity corresponding to each indoor unit, the first state information corresponding to the first air guide component, and the second state information corresponding to the second air guide component can be obtained. The actual cooling capacity required by the indoor unit can be calculated comprehensively, and the actual total cooling capacity required by the air conditioner can be determined based on the actual cooling capacity required by the indoor unit. Furthermore, the target operating frequency of the compressor can be determined based on the actual total cooling capacity required, and the operating state of the compressor can be controlled. Thus, during cooling or dehumidification, the operating frequency of the compressor can be comprehensively controlled based on the indoor humidity, the operating state of the air guide plate, and the air outlet angle. This can improve the cooling effect when the humidity is high, the air volume is high, the guide plate opening is large, and condensation is not easy, while avoiding the problem of condensation when the humidity is low, but the air volume, the guide plate angle is small, and the air is supplied from multiple angles. This improves the reliability of the air conditioner and the user experience.

[0024] 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

[0025] 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:

[0026] Figure 1 This is a schematic diagram of the refrigeration cycle system of an air conditioner according to an embodiment of the present invention;

[0027] Figure 2 This is a schematic diagram of the controller according to an embodiment of the present invention;

[0028] Figure 3 This is a schematic diagram of the structure of an air conditioner according to an embodiment of the present invention;

[0029] Figure 4 This is a schematic diagram of the state of an air guide assembly according to an embodiment of the present invention;

[0030] Figure 5 This is a schematic diagram of the state of an air guide assembly according to another embodiment of the present invention;

[0031] Figure 6 This is a flowchart illustrating the process of calculating the actual cooling capacity required by the indoor unit based on indoor humidity and the state of the air guide assembly, according to an embodiment of the present invention.

[0032] Figure 7 This is a flowchart illustrating the process of calculating the actual cooling capacity required by the indoor unit based on indoor humidity and the state of the air guide assembly, according to another embodiment of the present invention.

[0033] Figure 8 This is a flowchart illustrating the process of calculating the actual cooling capacity required by the indoor unit based on indoor humidity and the state of the air guide assembly, according to another embodiment of the present invention.

[0034] Figure 9 This is a flowchart illustrating the process of calculating the actual cooling capacity required by the indoor unit based on indoor humidity and the state of the air guide assembly, according to another embodiment of the present invention.

[0035] Figure 10 This is a flowchart of a control method for an air conditioner according to an embodiment of the present invention. Detailed Implementation

[0036] 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.

[0037] 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.

[0038] 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.

[0039] 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.

[0040] As shown in Figure 1, in this invention, the air conditioner 1 performs a refrigeration cycle by using a compressor, a condenser, an expansion valve, an evaporator, and a four-way valve. The refrigeration cycle includes a series of processes involving compression, condensation, expansion, and evaporation, and supplies refrigerant to the conditioned and heat-exchanged air.

[0041] The compressor compresses the refrigerant gas, which is in a high-temperature, high-pressure state and enters through the return pipe, and then discharges the compressed refrigerant gas through the exhaust pipe. The discharged refrigerant gas flows into the condenser through the condenser inlet pipe. The condenser condenses the compressed refrigerant into a liquid phase, and the heat is released to the surrounding environment through the condensation process.

[0042] The expansion valve expands the high-temperature, high-pressure liquid refrigerant, which condenses in the condenser and is discharged through the condenser outlet pipe, into a low-pressure liquid refrigerant. The evaporator evaporates the refrigerant that has expanded in the expansion valve, returning the low-temperature, low-pressure refrigerant gas to the compressor. 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, air conditioner 1 regulates the temperature of the indoor space.

[0043] In the embodiments shown in this application, the air conditioner 1 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 1 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.

[0044] This application embodiment also provides a hardware structure diagram of the controller 71, such as... 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.

[0045] 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), 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 to process data (e.g., computer program instructions).

[0046] 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 (CDROM) 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 application embodiment 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 control method of the air conditioner 1 provided in this application embodiment.

[0047] 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.

[0048] 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.

[0049] The following is combined with Figures 3-10 An air conditioner 1 and its control method according to an embodiment of the present invention are described.

[0050] In some embodiments, such as Figure 3 As shown, the air conditioner 1 includes an outdoor unit 10 and at least one indoor unit 20 connected to the outdoor unit 10. That is to say, the air conditioner 1 can be a single-unit air conditioner or a multi-unit air conditioner.

[0051] In some embodiments, such as Figure 3 As shown, the air conditioner 1 may include a refrigerant circulation loop 30, which allows the refrigerant to circulate in a loop consisting of a compressor, condenser, expansion valve, evaporator and four-way valve.

[0052] In some embodiments, such as Figure 3 As shown, the air conditioner 1 may include: a refrigeration system 40, which performs heat exchange between the refrigerant and indoor and outdoor air in a compression refrigeration cycle of the refrigerant circulation loop 30. The refrigeration system 40 includes a compressor, which is used to compress low-temperature, low-pressure refrigerant gas into high-temperature, high-pressure refrigerant gas and discharge it to the condenser.

[0053] In some embodiments, such as Figure 3 As shown, the air conditioner 1 may include an outdoor heat exchanger 30 and an indoor heat exchanger 40, wherein one functions as a condenser and the other functions as an evaporator.

[0054] In some embodiments, each indoor unit 20 comprises: a first air guide assembly, a second air guide assembly, and a humidity sensor. The first air guide assembly is vertically positioned at the air outlet of the corresponding indoor unit 20. The first air guide assembly can swing horizontally or stop swinging to adjust the air outlet's horizontal air outlet angle. In other words, the first air guide assembly is the left-right air guide assembly of the air conditioner 1, and specifically includes an air guide plate. The second air guide assembly is horizontally positioned at the air outlet of the corresponding indoor unit 20. The second air guide assembly can swing vertically or stop swinging to adjust the air outlet's vertical air outlet angle. In other words, the first air guide assembly is the up-down air guide assembly of the air conditioner 1, and specifically includes an air guide plate. The humidity sensor is used to acquire the indoor humidity of the environment where the corresponding indoor unit 20 is located.

[0055] In some embodiments, such as Figure 3As shown, the air conditioner 1 may include: a controller 71, the controller 71 being connected to a compressor, a first air guide assembly, a second air guide assembly, and a humidity sensor for each indoor unit 20. The controller 71 is configured to: upon receiving a control command instructing the air conditioner 1 to perform cooling or dehumidification, acquire the initial cooling demand of each indoor unit 20, and acquire the indoor humidity corresponding to each indoor unit 20, first state information corresponding to the first air guide assembly, and second state information corresponding to the second air guide assembly. The first state information includes the current oscillation state of the first air guide assembly and the air outlet angle in the horizontal direction, and the second state information includes the current oscillation state of the second air guide assembly and the air outlet angle in the vertical direction; determine the actual cooling demand of each indoor unit 20 based on the initial cooling demand, indoor humidity, first state information, and second state information; determine the actual total cooling demand of the air conditioner 1 based on the actual cooling demand of each indoor unit 20; determine the target operating frequency of the compressor based on the actual total cooling demand; and control the compressor to operate based on the target operating frequency.

[0056] Specifically, the air conditioner 1 includes a controller 71 connected to a compressor, a first air guide assembly, a second air guide assembly, and a humidity sensor for each indoor unit 20. When the air conditioner 1 is turned on, and the controller 71 receives a control command instructing the air conditioner 1 to perform cooling or dehumidification, the controller 71 responds to the control command and executes the corresponding data acquisition and calculation process. Specifically, it can obtain the initial cooling capacity required by each indoor unit 20, that is, the cooling capacity required for the air conditioner 1 to reach the normal set temperature under normal conditions. At the same time, the controller 71 can obtain the corresponding indoor humidity data from the humidity sensor of each indoor unit 20. That is, the humidity sensor can monitor the indoor humidity in real time and transmit the data to the controller 71 so that the user can understand the current indoor air humidity status in real time. Furthermore, the controller 71 can also obtain the current status information of the first air guide assembly and the second air guide assembly of each indoor unit 20, including the first status information corresponding to the first air guide assembly and the second status information corresponding to the second air guide assembly.

[0057] The first state information includes the current swing state of the first air guide component and the air outlet angle in the horizontal direction, i.e., whether the first air guide component is currently swinging and the air outlet direction and range controlled by the first air guide component in the horizontal direction. The second state information includes the current swing state of the second air guide component and the air outlet angle in the vertical direction, i.e., whether the second air guide component is currently swinging and the air outlet direction and range controlled by the second air guide component in the vertical direction.

[0058] Furthermore, based on the initial cooling capacity requirement, indoor humidity, first state information, and second state information corresponding to each indoor unit 20, the controller 71 can use an internally preset algorithm to determine the actual cooling capacity requirement of each indoor unit 20. That is, while considering the basic cooling demand, the controller also takes into account the influence of indoor humidity and the states of the first and second air guide components on the cooling effect, and comprehensively corrects the cooling capacity requirement of each indoor unit 20 to obtain the actual cooling capacity requirement of each indoor unit 20.

[0059] Furthermore, after calculating the actual cooling capacity required by each indoor unit 20, the controller 71 can determine the actual total cooling capacity required by the air conditioner 1 based on the actual cooling capacity required by each indoor unit 20 through an internally preset algorithm. That is, the total cooling capacity that needs to be provided to meet the cooling or dehumidification needs of all indoor units 20 under the current operating conditions.

[0060] Furthermore, the controller 71 can determine the target operating frequency of the compressor based on the actual total cooling demand through an internally preset algorithm, and send corresponding control signals according to the target operating frequency to precisely control the operating status of the compressor, so as to ensure that the air conditioner 1 can operate at the correct frequency, achieve efficient cooling or dehumidification, and effectively prevent condensation and other problems, thereby improving user comfort.

[0061] According to an embodiment of the present invention, when the air conditioner 1 is cooling or dehumidifying, it can acquire the indoor humidity corresponding to each indoor unit 20, the first state information corresponding to the first air guide component, and the second state information corresponding to the second air guide component, and comprehensively calculate the actual cooling capacity required by the indoor unit 20. Based on the actual cooling capacity required by the indoor unit 20, the actual total cooling capacity required by the air conditioner 1 is determined. Furthermore, the target operating frequency of the compressor can be determined based on the actual total cooling capacity required, and the operating state of the compressor can be controlled. Thus, when cooling or dehumidifying, the operating frequency of the compressor is comprehensively controlled based on the indoor humidity, the operating state of the air guide component, and the air outlet angle. This improves the cooling effect when the humidity is high, the air volume is high, the guide plate opening is large, and condensation is not easy, while avoiding the problem of condensation when the humidity is low, but the air volume, the guide plate angle is small, and the air is supplied from multiple angles. This improves the reliability of the air conditioner 1 and the user experience.

[0062] In one embodiment of the present invention, when determining the actual cooling capacity required by each indoor unit 20 based on the initial cooling capacity required by each indoor unit 20, indoor humidity, first state information, and second state information, the controller 71 is configured to: determine the corresponding humidity coefficient based on the indoor humidity; determine the corresponding air outlet coefficient based on the first state information and second state information; and correct the initial cooling capacity required based on the humidity coefficient and the air outlet coefficient to obtain the actual cooling capacity required.

[0063] Specifically, when determining the actual cooling capacity required by each indoor unit 20 based on the initial cooling capacity required by each indoor unit 20, indoor humidity, first state information, and second state information, a corresponding humidity coefficient can be determined based on the indoor humidity to reflect the degree of influence of indoor humidity on the cooling demand of the air conditioner 1 under the current environment. At the same time, a corresponding air outlet coefficient can also be determined based on the first state information and second state information to reflect the degree of influence of the state of the air guide component on the cooling demand of the air conditioner 1 under the current environment.

[0064] Furthermore, after obtaining the humidity coefficient and air outlet coefficient, the controller 71 can correct the initial required cooling capacity based on the humidity coefficient and air outlet coefficient, so that the corrected cooling capacity is closer to the actual cooling demand, thereby achieving a more efficient and comfortable cooling effect.

[0065] In one embodiment of the present invention, when determining the corresponding humidity coefficient based on indoor humidity, the controller 71 is configured to: obtain the humidity coefficient corresponding to indoor humidity by linear interpolation based on a pre-calibrated humidity and humidity coefficient fitting curve.

[0066] Specifically, when determining the corresponding humidity coefficient based on indoor humidity, a pre-calibrated humidity and humidity coefficient fitting curve can be used. This curve, which is a curve showing the trend of humidity coefficient change when humidity changes, is pre-calibrated using experimental data or empirical theory. The humidity coefficient corresponding to the indoor humidity can be obtained through linear interpolation. That is, the controller 71 can find two known points on the fitting curve that are closest to the current humidity value. Then, based on the humidity and humidity coefficient values ​​of the two known points, the humidity coefficient corresponding to the current humidity is obtained through linear interpolation. For example, two data points on the fitting curve that are closest to the current indoor humidity value are found and denoted as P1(x1,x2) and P2(y1,y2). A straight line equation y=mx+b is determined based on the two points, and the slope of the straight line is determined, thereby determining the linear interpolation equation. Then, the current indoor humidity value is substituted into the interpolation straight line equation to obtain the corresponding humidity coefficient.

[0067] In one embodiment of the present invention, when determining the corresponding humidity coefficient based on indoor humidity, the controller 71 is configured to: obtain the humidity coefficient corresponding to indoor humidity by querying a pre-calibrated two-dimensional relationship mapping table of humidity and humidity coefficient based on indoor humidity. The two-dimensional relationship mapping table of humidity and humidity coefficient includes multiple sets of correspondences between humidity and humidity coefficient, including the correspondence between indoor humidity and its corresponding humidity coefficient.

[0068] Specifically, when determining the corresponding humidity coefficient based on indoor humidity, the humidity coefficient corresponding to the indoor humidity can be obtained through a pre-calibrated two-dimensional mapping table of humidity and humidity coefficient. Specifically, the humidity coefficients corresponding to different humidity conditions can be pre-calibrated using experimental data or empirical theories and stored in tabular form, forming a two-dimensional mapping table of humidity and humidity coefficient. This table contains multiple sets of correspondences between humidity and humidity coefficient, including the correspondence between indoor humidity and its corresponding humidity coefficient.

[0069] In a specific embodiment, as shown in Table 1, the two-dimensional relationship mapping table can be a two-dimensional array, where one dimension represents the indoor humidity value and the other dimension represents the corresponding humidity coefficient value. Each row in the table represents a specific indoor humidity range or a specific indoor humidity value, as well as the corresponding humidity coefficient.

[0070] ≥90 Kh1 0.8(0.00-1.00) 90 > RH > 80 linear interpolation RH=80 Kh2 0.9(0.00-1.00) 80 > RH > 70 linear interpolation RH=70 Kh3 0.95(0.00-1.00) 70 > RH > 60 linear interpolation RH≤60 Kh4 1.0(0.00-1.00)

[0071] Table 1

[0072] In one embodiment of the present invention, the air outlet coefficient includes the air outlet angle coefficient. When determining the corresponding air outlet coefficient based on the first state information and the second state information, the controller 71 is configured to: when the first air guide component is not oscillating and the air outlet angle in the horizontal direction is within a first preset angle range, and the second air guide component is not oscillating, determine the air outlet angle coefficient based on the air outlet angle in the vertical direction, wherein different air outlet angles in the vertical direction correspond to different air outlet angle coefficients.

[0073] Specifically, the air outlet coefficient includes the air outlet angle coefficient, which represents the degree of influence of the vertical offset angle of the air outlet on the cooling or dehumidification effect. When determining the corresponding air outlet coefficient based on the first state information and the second state information, if the first air guide component is not oscillating (i.e., it is in a fixed position), and if the air outlet angle in the horizontal direction is within the first preset angle range, and the second air guide component is not oscillating (i.e., the air outlet angle in the horizontal direction meets a certain preset range and the second air guide component is also in a fixed position), the air outlet angle coefficient can be determined based on the air outlet angle in the vertical direction. Different air outlet angles in the vertical direction correspond to different air outlet angle coefficients. For example, when the air outlet angle in the vertical direction is small, the air outlet angle coefficient may be small, indicating low cooling or dehumidification efficiency; when the air outlet angle in the vertical direction is large, the air outlet angle coefficient may be large, indicating high cooling or dehumidification efficiency.

[0074] In one embodiment of the present invention, the air outlet coefficient includes an air outlet angle coefficient and a first swing coefficient corresponding to the first air guide component. When determining the corresponding air outlet coefficient based on the first state information and the second state information, the controller 71 is configured to: determine the air outlet angle coefficient based on the air outlet angle in the vertical direction when the second air guide component is not swinging and the first air guide component is swinging or the air outlet angle in the horizontal direction is outside the first preset angle range, and obtain the first swing coefficient pre-stored in the indoor unit 20, wherein different air outlet angles in the vertical direction correspond to different air outlet angle coefficients.

[0075] Specifically, the air outlet coefficient includes an air outlet angle coefficient and a first oscillation coefficient corresponding to the first air guide component. The air outlet angle coefficient represents the influence of the vertical offset angle of the air outlet on the cooling or dehumidification effect, and the first oscillation coefficient corresponding to the first air guide component represents the influence of the horizontal offset angle of the air outlet on the cooling or dehumidification effect. When determining the corresponding air outlet coefficient based on the first and second state information, if the second air guide component is not oscillating (i.e., in a fixed position), then if the first air guide component is oscillating or the air outlet's horizontal air outlet angle is at a first preset angle... Outside the preset range, that is, when the first air guide component swings left and right or the air outlet's horizontal air outlet angle exceeds the preset range, the air outlet angle coefficient can be determined based on the vertical air outlet angle, and the first swing coefficient stored in the indoor unit 20 can be obtained. Different air outlet angles in the vertical direction correspond to different air outlet angle coefficients. For example, when the vertical air outlet angle is small, the air outlet angle coefficient may be small, indicating low cooling or dehumidification efficiency. When the vertical air outlet angle is large, the air outlet angle coefficient may be large, indicating high cooling or dehumidification efficiency.

[0076] In one embodiment of the present invention, the air outlet coefficient includes the second swing coefficient corresponding to the second air guide component. When the corresponding air outlet coefficient is determined according to the first state information and the second state information, the controller 71 is configured to: when the first air guide component is not swinging and the air outlet angle in the horizontal direction is within the first preset angle range, and the second air guide component is swinging, obtain the second swing coefficient pre-stored in the indoor unit 20.

[0077] Specifically, the air outlet coefficient includes the second swing coefficient corresponding to the second air guide component, which is used to represent the degree of influence of the vertical offset angle of the air outlet on the cooling or dehumidification effect. When determining the corresponding air outlet coefficient based on the first state information and the second state information, if the first air guide component is not oscillating, i.e., it is in a fixed position, then if the air outlet angle in the horizontal direction is within the first preset angle range, and the second air guide component starts to oscillate, i.e., the air outlet angle in the horizontal direction meets a certain preset range, and the second air guide component starts to oscillate in the vertical direction, the second swing coefficient pre-stored in the indoor unit 20 can be obtained.

[0078] In one embodiment of the present invention, the air outlet coefficient includes a first swing coefficient corresponding to the first air guide component and a second swing coefficient corresponding to the second air guide component. When determining the corresponding air outlet coefficient based on the first state information and the second state information, the controller 71 is configured to: when the first air guide component starts to swing or the air outlet is located outside the first preset angle range in the horizontal direction, and the second air guide component starts to swing, the controller obtains the first swing coefficient and the second swing coefficient pre-stored in the indoor unit 20.

[0079] Specifically, the air outlet coefficient includes the first swing coefficient corresponding to the first air guide component and the second swing coefficient corresponding to the second air guide component. It is used to represent the degree of influence of the offset angle of the air outlet in the horizontal or vertical direction on the cooling or dehumidification effect. When determining the corresponding air outlet coefficient based on the first state information and the second state information, when the first air guide component starts to swing or the air outlet in the horizontal direction is outside the first preset angle range, that is, when the first air guide component swings left and right or the air outlet in the horizontal direction exceeds the preset range, if the second air guide component starts to swing, that is, when the second air guide component starts to swing in the vertical direction, the first swing coefficient and the second swing coefficient stored in the indoor unit 20 can be obtained.

[0080] In one embodiment of the present invention, when the initial required cooling capacity is corrected according to the humidity coefficient and the air outlet coefficient to obtain the actual required cooling capacity, the controller 71 is configured to: perform a multiplication operation on the initial required cooling capacity, the humidity coefficient and the air outlet coefficient to correct the initial required cooling capacity to obtain the actual required cooling capacity.

[0081] Specifically, when correcting the initial cooling demand based on the humidity coefficient and the air outlet coefficient to obtain the actual cooling demand, the initial cooling demand, humidity coefficient, and air outlet coefficient can be multiplied. This involves a two-step correction: first based on the humidity coefficient, then based on the air outlet coefficient. This comprehensively considers the impact of indoor humidity, the state of the first air guide component, and the state of the second air guide component on the cooling capacity, thus yielding a more accurate actual cooling demand. For example, if the initial cooling demand is 1000W, the humidity coefficient is 0.8, and the air outlet coefficient is 0.9, then the actual cooling demand is calculated as follows: Actual cooling demand = Initial cooling demand × Humidity coefficient × Air outlet coefficient = 1000W × 0.8 × 0.9 = 720W.

[0082] In one embodiment of the present invention, when determining the actual total cooling demand of the air conditioner 1 based on the actual cooling demand of each indoor unit 20, the controller 71 is configured to: sum the actual cooling demand of each indoor unit 20, and then multiply the sum with a pre-stored outdoor ambient temperature correction coefficient to obtain the actual total cooling demand of the air conditioner 1.

[0083] Specifically, when determining the actual total cooling demand of the air conditioner 1 based on the actual cooling demand of each indoor unit 20, the controller 71 can sum the calculated actual cooling demand of each indoor unit 20 to obtain the total cooling demand of the entire air conditioner 1. Furthermore, to avoid the influence of outdoor ambient temperature on the cooling effect of the air conditioner 1, for example, in an extremely high outdoor environment, the air conditioner 1 may need to consume more energy to achieve the same cooling effect, the obtained total cooling demand can be multiplied by a pre-stored outdoor ambient temperature correction coefficient to obtain the actual total cooling demand of the air conditioner 1, that is, the actual total cooling demand of the air conditioner 1 = (the sum of the actual cooling demand of each indoor unit 20) × outdoor ambient temperature correction coefficient.

[0084] In a specific embodiment, the outdoor ambient temperature correction coefficient can be preset based on historical data, experimental results or professional experience to reflect the changes in the cooling capacity of the air conditioner 1 under different outdoor ambient temperatures.

[0085] In a specific embodiment, the indoor humidity is as shown in Table 1 above, and the indoor humidity coefficient can be denoted as Khi (i = 1, 2, 3, 4…). Figure 4 and Figure 5As shown, the states of the air guiding components include the states of the first air guiding component and the second air guiding component. The state of the first air guiding component includes situations where the air outlet angle in the horizontal direction is within a first preset angle range (i.e., the first air guiding component's swing position is centered, deviating from the center position by no more than 10° to the left or right), and situations where the first air guiding component is swinging or the air outlet angle in the horizontal direction is outside the first preset angle range (i.e., the first air guiding component swings left or right or deviates to one side (deviating from the center position by more than 10°). The corresponding first swing coefficient can be denoted as Kwi. The state of the second air guide component includes being fixed in the vertical direction. According to the four positions, namely position 1, position 2, position 3 and position 4, it can be divided into three air outlet angle ranges. Among them, position 2-1 corresponds to the first angle range, position 3-2 corresponds to the second angle range, and position 4-3 corresponds to the third angle range. The corresponding air outlet angle coefficient can be denoted as Kdi (i = 1, 2, 3). Specifically, the correspondence between the air outlet angle coefficient and the air outlet angle is shown in Table 2. Furthermore, when the state of the second air guide component swings in the vertical direction, its corresponding second swing coefficient can be denoted as K1.

[0086]

[0087] Table 2

[0088] In summary, when air conditioner 1 is in cooling or dehumidifying mode, based on the indoor humidity and the state of the air guide components, there are four possible scenarios: the first scenario is a combination of... Figure 6 As shown, under different indoor humidity levels, for example, taking an indoor humidity of 90 degrees as an example, if the first air guide component is not activated and the air outlet angle in the horizontal direction is within the first preset angle range, and the second air guide component is not activated, if the air outlet angle in the vertical direction of the second air guide component is within the second angle range, then the actual cooling capacity required by the indoor unit 20 is Qin-oni*Kh1*Kd2, where Qin-oni represents the initial required cooling capacity, Kh1 represents the indoor humidity coefficient corresponding to an indoor humidity of 90 degrees, and Kd2 represents the air outlet angle coefficient corresponding to an air outlet angle in the vertical direction within the second angle range. Similarly, under different indoor humidity levels, the air outlet angle in the vertical direction of the second air guide component is different, and the actual cooling capacity required by the indoor unit 20 is different. For details, please refer to Tables 1 and 2 for calculation, which will not be elaborated here.

[0089] The second type: combination Figure 7As shown, under different indoor humidity levels, for example, taking an indoor humidity of 90 degrees as an example, if the second air guide component is not oscillating and the first air guide component is oscillating or the air outlet angle in the horizontal direction is outside the first preset angle range, then if the air outlet angle in the vertical direction of the second air guide component is within the second angle range, the actual cooling capacity required by the indoor unit 20 is Qin-oni*Kh1*Kd2*Kwi, where Qin-oni represents the initial required cooling capacity, Kh1 represents the indoor humidity coefficient corresponding to an indoor humidity of 90 degrees, Kd2 represents the air outlet angle coefficient corresponding to an air outlet angle in the vertical direction within the second angle range, and Kwi represents the first oscillation coefficient. Similarly, under different indoor humidity levels, the air outlet angle in the vertical direction of the second air guide component is different, and the actual cooling capacity required by the indoor unit 20 is different. For details, please refer to Tables 1 and 2 for calculation, which will not be elaborated here.

[0090] The third type: combination Figure 8 As shown, under different indoor humidity levels, for example, taking an indoor humidity of 90 degrees as an example, the first air guide component is not oscillating and the air outlet angle in the horizontal direction is within the first preset angle range, and the second air guide component is oscillating. At this time, the actual cooling capacity required by the indoor unit can be calculated based on the vertical angle of the air outlet of the second air guide component. The calculation formula is Qin-oni*Kh1*K1, where Qin-oni represents the initial required cooling capacity, Kh1 represents the indoor humidity coefficient corresponding to an indoor humidity of 90 degrees, and K1 represents the second oscillation coefficient. Similarly, the actual required cooling capacity of the indoor unit 20 is different under different indoor humidity levels. For details, please refer to Table 1 for calculation, which will not be elaborated here.

[0091] The fourth type: combination Figure 9 As shown, under different indoor humidity levels, for example, taking an indoor humidity of 90 degrees as an example, the first air guide component starts to swing or the air outlet in the horizontal direction is outside the first preset angle range, and the second air guide component starts to swing. At this time, the actual cooling capacity required by the indoor unit can be calculated by combining the angle of the air outlet in the horizontal direction of the first air guide component and the angle of the air outlet in the vertical direction of the second air guide component. The calculation formula is Qin-oni*Kh1*K1*Kwi, where Qin-oni represents the initial cooling capacity required, Kh1 represents the indoor humidity coefficient corresponding to an indoor humidity of 90 degrees, K1 represents the second swing coefficient, and Kwi represents the first swing coefficient. Similarly, the actual cooling capacity required by the indoor unit 20 is different under different indoor humidity levels. For details, please refer to Table 1 for calculation, which will not be elaborated here.

[0092] In one embodiment of the present invention, when determining the target operating frequency of the compressor based on the actual total cooling demand, the controller 71 is configured to perform the following calculations:

[0093] Fre_aim=Kao*Q*Kbo

[0094] Where Fre_aim is the target operating frequency, Q is the actual total cooling demand of air conditioner 1, and Kao and Kbo are two constants determined based on the compressor output capacity curve.

[0095] Specifically, when determining the target operating frequency of the compressor based on the actual total cooling demand, the above formula can be executed, where Fre_aim is the target operating frequency, which is the operating frequency that the compressor needs to reach in order to achieve the actual total cooling demand of air conditioner 1, Q is the actual total cooling demand of air conditioner 1, which is the total cooling capacity provided by air conditioner 1, and Kao and Kbo are two constants determined based on the compressor output capacity curve, which are correction constants of the compressor during operation, and are usually fixed values.

[0096] In one embodiment of the present invention, when obtaining the initial cooling capacity required by each indoor unit 20, the controller 71 is configured to: determine the initial cooling capacity required by each indoor unit 20 according to the parameters pre-stored in each indoor unit 20, wherein the parameters include: indoor unit 20 capacity code, model correction coefficient, temperature difference correction coefficient, air volume correction coefficient, high efficiency correction coefficient, single-use ambient temperature correction coefficient, and single-use capacity correction coefficient.

[0097] Specifically, when obtaining the initial cooling capacity requirement of each indoor unit 20, the controller 71 can determine the initial cooling capacity requirement corresponding to each indoor unit 20 based on the parameters pre-stored in each indoor unit 20. These parameters include: an indoor unit 20 capacity code, representing the rated cooling capacity of the indoor unit 20; a model correction coefficient, used to adjust the indoor unit 20 capacity code to reflect the actual cooling capacity of a specific model or type of indoor unit 20; a temperature difference correction coefficient, used to correct the cooling capacity based on the actual temperature difference; an airflow correction coefficient, used to correct the cooling capacity based on the actual airflow; a high efficiency correction coefficient, used to correct the cooling capacity based on the current operating mode of the air conditioner 1; a single-use ambient temperature correction coefficient, used to correct the cooling capacity based on the ambient temperature of a single indoor unit 20; and a single-use capacity correction coefficient, used to correct the cooling capacity based on the cooling capacity of a single indoor unit 20.

[0098] In a specific embodiment, the initial cooling capacity required by the indoor unit 20 = indoor unit 20 capacity code × model correction factor × temperature difference correction factor × air volume correction factor × high efficiency correction factor × simple working ambient temperature correction factor × simple working capacity correction factor.

[0099] According to an embodiment of the present invention, when the air conditioner 1 is cooling or dehumidifying, it can acquire the indoor humidity corresponding to each indoor unit 20, the first state information corresponding to the first air guide component, and the second state information corresponding to the second air guide component, and comprehensively calculate the actual cooling capacity required by the indoor unit 20. Based on the actual cooling capacity required by the indoor unit 20, the actual total cooling capacity required by the air conditioner 1 is determined. Furthermore, the target operating frequency of the compressor can be determined based on the actual total cooling capacity required, and the operating state of the compressor can be controlled. Thus, when cooling or dehumidifying, the operating frequency of the compressor can be comprehensively controlled based on the indoor humidity, the operating state of the air guide component, and the air outlet angle. This can improve the cooling effect when the humidity is high, the air volume is high, the guide plate opening is large, and condensation is not easy, while avoiding the problem of condensation when the humidity is low, but the air volume, the guide plate angle is small, and the air is supplied from multiple angles. This improves the reliability of the air conditioner 1 and the user experience.

[0100] The following is for reference. Figure 10 This invention describes a control method for an air conditioner according to an embodiment of the present invention.

[0101] like Figure 10 As shown, the air conditioner control method of this embodiment includes at least steps S1-S5.

[0102] Step S1: Upon receiving a control command instructing the air conditioner to perform cooling or dehumidification, the initial required cooling capacity of each indoor unit is obtained, as well as the indoor humidity corresponding to each indoor unit, the first state information corresponding to the first air guide component, and the second state information corresponding to the second air guide component. The first state information includes the current swing state of the first air guide component and the air outlet angle in the horizontal direction. The second state information includes the current swing state of the second air guide component and the air outlet angle in the vertical direction. The first air guide component is vertically positioned at the air outlet of the corresponding indoor unit. The first air guide component can swing horizontally or stop swinging to adjust the air outlet angle in the horizontal direction. The second air guide component is horizontally positioned at the air outlet of the corresponding indoor unit. The second air guide component can swing vertically or stop swinging to adjust the air outlet angle in the vertical direction.

[0103] Step S2: Determine the actual cooling capacity required for each indoor unit based on the initial cooling capacity requirement, indoor humidity, first state information, and second state information corresponding to each indoor unit.

[0104] Step S3: Determine the total actual cooling capacity required by the air conditioner based on the actual cooling capacity required by each indoor unit.

[0105] Step S4: Determine the target operating frequency of the compressor based on the actual total cooling demand.

[0106] Step S5: Control the compressor to operate according to the target operating frequency.

[0107] In some embodiments, when determining the actual cooling capacity required for each indoor unit based on the initial cooling capacity required for each indoor unit, indoor humidity, first state information, and second state information, the process specifically includes: determining the corresponding humidity coefficient based on the indoor humidity; determining the corresponding air outlet coefficient based on the first state information and second state information; and correcting the initial cooling capacity required based on the humidity coefficient and the air outlet coefficient to obtain the actual cooling capacity required.

[0108] In some embodiments, determining the corresponding humidity coefficient based on indoor humidity specifically includes: obtaining the humidity coefficient corresponding to indoor humidity through linear interpolation based on a pre-calibrated humidity and humidity coefficient fitting curve.

[0109] In some embodiments, when determining the corresponding humidity coefficient based on indoor humidity, the method further includes: obtaining the humidity coefficient corresponding to indoor humidity by querying a pre-calibrated two-dimensional relationship mapping table of humidity and humidity coefficient based on indoor humidity, wherein the two-dimensional relationship mapping table of humidity and humidity coefficient includes multiple sets of correspondences between humidity and humidity coefficient, and the multiple sets of correspondences between humidity and humidity coefficient include the correspondence between indoor humidity and its corresponding humidity coefficient.

[0110] In some embodiments, the air outlet coefficient includes an air outlet angle coefficient. When determining the corresponding air outlet coefficient based on the first state information and the second state information, the specific steps include: when the first air guide component is not oscillating and the air outlet angle in the horizontal direction is within a first preset angle range, and the second air guide component is not oscillating, the air outlet angle coefficient is determined based on the air outlet angle in the vertical direction, wherein different air outlet angles in the vertical direction correspond to different air outlet angle coefficients.

[0111] In some embodiments, the air outlet coefficient includes an air outlet angle coefficient and a first oscillation coefficient corresponding to the first air guide component. When determining the corresponding air outlet coefficient based on the first state information and the second state information, the method further includes: when the second air guide component is not oscillating and the first air guide component is oscillating or the air outlet angle in the horizontal direction is outside the first preset angle range, determining the air outlet angle coefficient based on the air outlet angle in the vertical direction and obtaining the first oscillation coefficient pre-stored in the indoor unit, wherein different air outlet angles in the vertical direction correspond to different air outlet angle coefficients.

[0112] In some embodiments, the air outlet coefficient includes the second swing coefficient corresponding to the second air guide component. When determining the corresponding air outlet coefficient based on the first state information and the second state information, the method further includes: when the first air guide component is not swinging and the air outlet angle in the horizontal direction is within the first preset angle range, and the second air guide component is swinging, the second swing coefficient stored in the indoor unit is obtained.

[0113] In some embodiments, the air outlet coefficient includes a first swing coefficient corresponding to the first air guide component and a second swing coefficient corresponding to the second air guide component. When determining the corresponding air outlet coefficient based on the first state information and the second state information, the method further includes: when the first air guide component starts to swing or the air outlet is located outside the first preset angle range in the horizontal direction, and the second air guide component starts to swing, the first swing coefficient and the second swing coefficient stored in the indoor unit are obtained.

[0114] In some embodiments, when correcting the initial required cooling capacity based on the humidity coefficient and the air outlet coefficient to obtain the actual required cooling capacity, the specific steps include: performing a multiplication operation on the initial required cooling capacity, the humidity coefficient, and the air outlet coefficient to correct the initial required cooling capacity and obtain the actual required cooling capacity.

[0115] In some embodiments, when determining the actual total cooling capacity demand of the air conditioner based on the actual cooling capacity demand of each indoor unit, the specific steps include: summing the actual cooling capacity demand of each indoor unit, multiplying the sum with a pre-stored outdoor ambient temperature correction coefficient, and obtaining the actual total cooling capacity demand of the air conditioner.

[0116] In some embodiments, when determining the target operating frequency of the compressor based on the actual total cooling demand, the specific calculation formula is as follows:

[0117] Fre_aim=Kao*Q*Kbo

[0118] Where Fre_aim is the target operating frequency, Q is the actual total cooling demand of the air conditioner, and Kao and Kbo are two constants determined based on the compressor output capacity curve.

[0119] In some embodiments, obtaining the initial cooling capacity requirement of each indoor unit specifically includes: determining the initial cooling capacity requirement corresponding to each indoor unit based on the parameters pre-stored in each indoor unit, wherein the parameters include: indoor unit capacity code, model correction coefficient, temperature difference correction coefficient, air volume correction coefficient, high efficiency correction coefficient, single-use ambient temperature correction coefficient, and single-use capacity correction coefficient.

[0120] It should be noted that the specific implementation method of controlling the air conditioner is similar to that of the air conditioner in any of the above embodiments of the present invention. Therefore, for a detailed exemplary description of the control process of the air conditioner, please refer to the relevant description of the air conditioner mentioned above. To reduce redundancy, it will not be repeated here.

[0121] According to the air conditioner control method of the present invention, when the air conditioner is cooling or dehumidifying, it can acquire the indoor humidity corresponding to each indoor unit, the first state information corresponding to the first air guide component, and the second state information corresponding to the second air guide component, and comprehensively calculate the actual cooling capacity required by the indoor unit. Based on the actual cooling capacity required by the indoor unit, the actual total cooling capacity required by the air conditioner is determined. Furthermore, the target operating frequency of the compressor can be determined based on the actual total cooling capacity required, and the operating state of the compressor can be controlled. Thus, when cooling or dehumidifying, the operating frequency of the compressor can be comprehensively controlled based on the indoor humidity, the operating state of the air guide component, and the air outlet angle. This can improve the cooling effect when the humidity is high, the air volume is high, the guide plate opening is large, and condensation is not easy, while avoiding the problem of condensation when the humidity is low, but the air volume, the guide plate angle is small, and the air is supplied from multiple angles. This improves the reliability of the air conditioner and the user experience.

[0122] 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.

[0123] 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 in that, include: An outdoor unit and at least one indoor unit connected to the outdoor unit; The refrigerant circulation loop allows the refrigerant to circulate within a circuit consisting of the compressor, condenser, expansion valve, evaporator, and four-way valve. A refrigeration system that performs heat exchange between refrigerant and air in a compression refrigeration cycle of the refrigerant circulation loop, the refrigeration system including the compressor, the compressor being used to compress low-temperature, low-pressure refrigerant gas into high-temperature, high-pressure refrigerant gas and discharge it to the condenser; An outdoor heat exchanger and an indoor heat exchanger, wherein one functions as the condenser and the other functions as the evaporator; Each indoor unit includes: a first air guide assembly, a second air guide assembly, and a humidity sensor; The first air guide component is vertically arranged at the air outlet of the corresponding indoor unit. The first air guide component can swing horizontally or stop swinging to adjust the air outlet's air outlet angle in the horizontal direction. The second air guide component is arranged horizontally at the air outlet of the corresponding indoor unit. The second air guide component can swing vertically or stop swinging to adjust the air outlet's air outlet angle in the vertical direction. The humidity sensor is used to obtain the indoor humidity of the environment where the corresponding indoor unit is located; The controller is configured to: When a control command is received to instruct the air conditioner to perform cooling or dehumidification, the initial required cooling capacity of each indoor unit is obtained, as well as the indoor humidity corresponding to each indoor unit, the first state information corresponding to the first air guide component, and the second state information corresponding to the second air guide component. The first state information includes the current swing state of the first air guide component and the air outlet angle in the horizontal direction, and the second state information includes the current swing state of the second air guide component and the air outlet angle in the vertical direction. The actual cooling capacity required for each indoor unit is determined based on the initial cooling capacity required for each indoor unit, the indoor humidity, the first state information, and the second state information. The actual total cooling capacity required by the air conditioner is determined based on the actual cooling capacity required by each indoor unit. The target operating frequency of the compressor is determined based on the actual total cooling demand. The compressor is controlled to operate according to the target operating frequency.

2. The air conditioner according to claim 1, characterized in that, When determining the actual cooling capacity required by each indoor unit based on the initial cooling capacity requirement, the indoor humidity, the first state information, and the second state information, the controller is configured to: Determine the corresponding humidity coefficient based on the indoor humidity; The corresponding air outlet coefficient is determined based on the first state information and the second state information; The initial required cooling capacity is corrected based on the humidity coefficient and the air outlet coefficient to obtain the actual required cooling capacity.

3. The air conditioner according to claim 2, characterized in that, When determining the corresponding humidity coefficient based on the indoor humidity, the controller is configured to: Based on the pre-calibrated humidity and humidity coefficient fitting curve, the humidity coefficient corresponding to the indoor humidity is obtained by linear interpolation.

4. The air conditioner according to claim 2, characterized in that, When determining the corresponding humidity coefficient based on the indoor humidity, the controller is configured to: Based on the indoor humidity, the humidity coefficient corresponding to the indoor humidity is obtained by querying a pre-calibrated two-dimensional relationship mapping table of humidity and humidity coefficient. The two-dimensional relationship mapping table of humidity and humidity coefficient includes multiple sets of correspondences between humidity and humidity coefficient, including the correspondence between the indoor humidity and its corresponding humidity coefficient.

5. The air conditioner according to claim 2, characterized in that, The air outlet coefficient includes an air outlet angle coefficient. When determining the corresponding air outlet coefficient based on the first state information and the second state information, the controller is configured to: When the first air guide component is not oscillating and the air outlet's horizontal air outlet angle is within a first preset angle range, and the second air guide component is not oscillating, the air outlet angle coefficient is determined based on the air outlet's vertical air outlet angle, wherein different air outlet angles in the vertical direction correspond to different air outlet angle coefficients.

6. The air conditioner according to claim 2, characterized in that, The air outlet coefficient includes an air outlet angle coefficient and a first oscillation coefficient corresponding to the first air guide component. When determining the corresponding air outlet coefficient based on the first state information and the second state information, the controller is configured to: When the second air guide component is not oscillating and the first air guide component is oscillating or the air outlet in the horizontal direction is outside the first preset angle range, the air outlet angle coefficient is determined according to the air outlet in the vertical direction, and the first oscillation coefficient stored in the indoor unit is obtained, wherein different air outlets in the vertical direction correspond to different air outlet angle coefficients.

7. The air conditioner according to claim 2, characterized in that, The air outlet coefficient includes the second oscillation coefficient corresponding to the second air guide component. When determining the corresponding air outlet coefficient based on the first state information and the second state information, the controller is configured to: When the first air guide component is not oscillating and the air outlet's horizontal air outlet angle is within a first preset angle range, and the second air guide component is oscillating, the second oscillation coefficient pre-stored in the indoor unit is obtained.

8. The air conditioner according to claim 2, characterized in that, The air outlet coefficient includes a first oscillation coefficient corresponding to the first air guide component and a second oscillation coefficient corresponding to the second air guide component. When determining the corresponding air outlet coefficient based on the first state information and the second state information, the controller is configured to: When the first air guide component starts to swing or the air outlet is outside the first preset angle range in the horizontal direction, and the second air guide component starts to swing, the first swing coefficient and the second swing coefficient stored in the indoor unit are obtained.

9. The air conditioner according to claim 2, characterized in that, When the initial required cooling capacity is corrected based on the humidity coefficient and the air outlet coefficient to obtain the actual required cooling capacity, the controller is configured to: The initial cooling demand, the humidity coefficient, and the air outlet coefficient are multiplied to correct the initial cooling demand, thus obtaining the actual cooling demand.

10. The air conditioner according to claim 1, characterized in that, When determining the actual total cooling capacity required by the air conditioner based on the actual cooling capacity required by each indoor unit, the controller is configured as follows: After summing the actual cooling capacity required by each indoor unit, the sum is multiplied by a pre-stored outdoor ambient temperature correction coefficient to obtain the total actual cooling capacity required by the air conditioner.

11. The air conditioner according to claim 1, characterized in that, When determining the target operating frequency of the compressor based on the actual total cooling demand, the controller is configured to perform the following calculations: ； in, The target operating frequency, This represents the actual total cooling capacity required by the air conditioner. and These are two constants determined based on the compressor output capacity curve.

12. The air conditioner according to claim 1, characterized in that, When obtaining the initial cooling capacity requirement of each indoor unit, the controller is configured to: The initial cooling capacity required for each indoor unit is determined based on the parameters pre-stored in each indoor unit. The parameters include: indoor unit capacity code, model correction coefficient, temperature difference correction coefficient, air volume correction coefficient, high efficiency correction coefficient, single-use ambient temperature correction coefficient, and single-use capacity correction coefficient.

13. A control method for an air conditioner, characterized in that, For use in an air conditioner as described in any one of claims 1-12, the method comprises the following steps: Upon receiving a control command instructing the air conditioner to perform cooling or dehumidification, the system acquires the initial required cooling capacity of each indoor unit, as well as the indoor humidity corresponding to each indoor unit, the first state information corresponding to the first air guide component, and the second state information corresponding to the second air guide component. The first state information includes the current swing state of the first air guide component and the air outlet angle in the horizontal direction. The second state information includes the current swing state of the second air guide component and the air outlet angle in the vertical direction. The first air guide component is vertically positioned at the air outlet of the corresponding indoor unit and can swing horizontally or stop swinging to adjust the air outlet angle in the horizontal direction. The second air guide component is horizontally positioned at the air outlet of the corresponding indoor unit and can swing vertically or stop swinging to adjust the air outlet angle in the vertical direction. The actual cooling capacity required for each indoor unit is determined based on the initial cooling capacity required for each indoor unit, the indoor humidity, the first state information, and the second state information. The actual total cooling capacity required by the air conditioner is determined based on the actual cooling capacity required by each indoor unit. The target operating frequency of the compressor is determined based on the actual total cooling demand. The compressor is controlled to operate according to the target operating frequency.

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