Air conditioner and control method thereof

Abstract

The invention provides an air conditioner and a control method thereof.The air conditioner comprises a controller, and the controller is configured to obtain the initial required refrigerating capacity of each indoor unit when a control instruction used for instructing the air conditioner to conduct refrigeration or dehumidification is received; and indoor humidity corresponding to each indoor unit, first state information corresponding to the first air guide assembly and second state information corresponding to the second air guide assembly are obtained, and the actual required refrigerating capacity of each indoor unit is determined according to the obtained information, so that the actual total required refrigerating capacity of the air conditioner is determined, and then the target operation frequency of the compressor is determined. And the compressor is controlled to operate according to the target operation frequency. According to the air conditioner, the problem that condensation is likely to be generated under the conditions of low humidity, small air volume, small guide plate angle, multi-angle air supply and the like can be avoided while the refrigeration effect under the conditions of high humidity, large air volume, large guide plate opening degree and the like which are not prone to condensation is improved, and then the reliability of the air conditioner and the experience feeling of a user are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air conditioners, in particular to an air conditioner and a control method thereof. BACKGROUND

[0002] Air conditioners are widely used in people's lives, and air conditioners play an important role in indoor temperature regulation, which can provide a healthy and comfortable indoor environment for users to meet the needs of normal work, life and study. At present, in summer, the weather is usually hot and humid, especially in coastal areas, the humidity is very large, and air conditioners such as wall-mounted air conditioners, cabinet air conditioners and ceiling air conditioners often produce condensation and water droplets in the case of refrigeration or dehumidification, which brings poor experience to users and causes complaints from users.

[0003] In the prior art, the problems caused by condensation can be prevented in various ways, for example, the temperature of the key condensation position and the dew point temperature under the current environment can be obtained, and the temperature of the key condensation position is compared with the dew point temperature, when it is judged that the temperature of the key condensation position is less than or equal to the dew point temperature, the target frequency is reduced, and the frequency reduction rate of the target frequency is adjusted according to the difference between the temperature of the key condensation position and the dew point temperature, to ensure that the air conditioner has the best refrigeration effect under the condition of no condensation; in the anti-condensation control mode, the anti-condensation action is performed according to the preset control strategy, including reducing the opening degree of the expansion valve of the air conditioner, reducing the refrigerant flow into the evaporator, reducing the indoor cooling load, and increasing the temperature of the evaporator to achieve the anti-condensation effect, and then judging whether to perform the compressor frequency reduction correction action according to the temperature difference between the indoor temperature and the evaporator temperature of the air conditioner, which makes the anti-condensation design more comprehensive and the anti-condensation effect more effective. However, the above methods do not involve how to solve the condensation problem caused by multi-angle air supply in the case of large humidity refrigeration or dehumidification. SUMMARY

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

[0005] To this end, one object of the present application is to provide an air conditioner which can improve the refrigeration effect in the case of large humidity, large air volume and large guide plate opening degree, which is not easy to condense, and avoid the problem of easy condensation in the case of small humidity, small air volume and small guide plate angle, multi-angle air supply and the like, thereby improving the reliability of the air conditioner and the experience of the user.

[0006] To this end, a second object of the present application is to provide a control method of an air conditioner.

[0007] To achieve the above object, embodiments of the first aspect of the present application propose an air conditioner, comprising: an outdoor unit and at least one indoor unit connected with the outdoor unit; a refrigerant circulation loop, which circulates refrigerant in a loop composed of a compressor, a condenser, an expansion valve, an evaporator and a four-way valve; a refrigeration system which performs heat exchange between refrigerant and air in a compression refrigeration cycle of the refrigerant circulation loop, the refrigeration system comprising the compressor for performing the work of compressing low-temperature and low-pressure refrigerant gas into high-temperature and high-pressure refrigerant gas and discharging to the condenser; an outdoor heat exchanger and an indoor heat exchanger, wherein one works as the condenser and the other works as the evaporator; each of the indoor units comprises: a first air guide assembly, a second air guide assembly and a humidity sensor; the first air guide assembly is arranged at the air outlet of the corresponding indoor unit in the vertical direction, and the first air guide assembly can swing or stop swinging in the horizontal direction to adjust the air outlet angle of the air outlet in the horizontal direction; the second air guide assembly is arranged at the air outlet of the corresponding indoor unit in the horizontal direction, and the second air guide assembly can swing or stop swinging in the vertical direction to adjust the air outlet angle of the air outlet in the vertical direction; the humidity sensor is used to obtain the indoor humidity of the environment where the corresponding indoor unit is located; a controller, the controller is connected with the compressor, the first air guide assembly, the second air guide assembly and the humidity sensor of each indoor unit, and the controller is configured to: when receiving a control instruction indicating that the air conditioner performs refrigeration or dehumidification, obtaining the initial required refrigeration amount of each indoor unit, and obtaining the indoor humidity corresponding to each indoor unit, the first state information corresponding to the first air guide assembly and the second state information corresponding to the second air guide assembly, wherein the first state information includes the current swing state of the first air guide assembly and the air outlet angle of the air outlet in the horizontal direction, and the second state information includes the current swing state of the second air guide assembly and the air outlet angle of the air outlet in the vertical direction; determining the actual required refrigeration amount of each indoor unit according to the initial required refrigeration amount, the indoor humidity, the first state information and the second state information corresponding to each indoor unit; determining the actual total required refrigeration amount of the air conditioner according to the actual required refrigeration amount of each indoor unit; determining the target operating frequency of the compressor according to the actual total required refrigeration amount; controlling the compressor to operate according to the target operating frequency.

[0008] According to the air conditioner provided in the embodiment of the present application, when the air conditioner is cooling or dehumidifying, the indoor humidity corresponding to each indoor unit, the first state information corresponding to the first air guide assembly and the second state information corresponding to the second air guide assembly can be obtained, and the actual required cooling capacity of the indoor unit can be calculated comprehensively, and the actual total required cooling capacity of the air conditioner can be determined according to the actual required cooling capacity of the indoor unit, and further, the target operating frequency of the compressor can be determined according to the actual total required cooling capacity, and the operating state of the compressor is controlled, so that when cooling or dehumidifying, the operating frequency of the compressor is comprehensively controlled according to the indoor humidity, the operating state and the air outlet angle of the air guide assembly of the air conditioner, the cooling effect in the case of large humidity, large air volume and large guide plate opening degree, which is not prone to condensation, can be improved, and the problem of easy condensation in the case of small humidity, small air volume and small guide plate angle, which is prone to multi-angle air supply, can be avoided, thereby improving the reliability of the air conditioner and the user experience.

[0009] In some embodiments, when the actual required cooling capacity of each indoor unit is determined according to the initial required cooling capacity of 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 according to the indoor humidity; determine a corresponding air outlet coefficient according to the first state information and the second state information; and correct the initial required cooling capacity according to the humidity coefficient and the air outlet coefficient to obtain the actual required cooling capacity.

[0010] In some embodiments, when the corresponding humidity coefficient is determined according to 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 the corresponding humidity coefficient is determined according to the indoor humidity, the controller is configured to obtain the humidity coefficient corresponding to the indoor humidity by querying a pre-calibrated humidity and humidity coefficient two-dimensional relationship mapping table based on the indoor humidity, wherein the humidity and humidity coefficient two-dimensional relationship mapping table includes a plurality of corresponding relationships between humidity and humidity coefficients, and the corresponding relationship between the indoor humidity and the humidity coefficient corresponding thereto is included in the plurality of corresponding relationships between humidity and humidity coefficients.

[0012] In some embodiments, the air outlet coefficient includes an air outlet angle coefficient, and when determining the corresponding air outlet coefficient according to the first state information and the second state information, the controller is configured to: when the first air guide component is not opened for swinging, the air outlet angle of the air outlet in the horizontal direction is within a first preset angle interval, and the second air guide component is not opened for swinging, determine the air outlet angle coefficient according to the air outlet angle of the air outlet in the vertical direction, wherein different air outlet angles of the air outlet 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 swing coefficient corresponding to the first air guide component, and when determining the corresponding air outlet coefficient according to the first state information and the second state information, the controller is configured to: when the second air guide component is not opened for swinging, and the first air guide component is opened for swinging or the air outlet angle of the air outlet in the horizontal direction is outside the first preset angle interval, determine the air outlet angle coefficient according to the air outlet angle of the air outlet in the vertical direction, and obtain the first swing coefficient pre-stored in the indoor unit, wherein different air outlet angles of the air outlet in the vertical direction correspond to different air outlet angle coefficients.

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

[0016] In some embodiments, when the initial required refrigerating capacity is corrected according to the humidity coefficient and the air outlet coefficient to obtain the actual required refrigerating capacity, the controller is configured to: multiply the initial required refrigerating capacity, the humidity coefficient and the air outlet coefficient to correct the initial required refrigerating capacity to obtain the actual required refrigerating capacity.

[0017] In some embodiments, when determining the actual total required cooling capacity of the air conditioner according to the actual required cooling capacities of the indoor units, the controller is configured to multiply the sum of the actual required cooling capacities of the indoor units by a pre-stored outdoor ambient temperature correction coefficient to obtain the actual total required cooling capacity of the air conditioner.

[0018] In some embodiments, when determining the target operating frequency of the compressor according to the actual total required cooling capacity, the controller is configured to perform the following operation:

[0019] Fre_aim=Kao×Q+Kbo;

[0020] wherein Fre_aim is the target operating frequency, Q is the actual total required cooling capacity of the air conditioner, and Kao and Kbo are two constants determined according to the compressor output capacity curve.

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

[0022] To achieve the above object, the embodiment of the second aspect of the present application proposes a control method of an air conditioner, comprising the following steps: when a control instruction for instructing the air conditioner to carry out refrigeration or dehumidification is received, obtaining an initial required refrigeration amount of each indoor unit, and obtaining indoor humidity corresponding to each indoor unit, first state information corresponding to a first air guide assembly, and second state information corresponding to a second air guide assembly, wherein the first state information comprises a current swing state of the first air guide assembly and an air outlet angle of the air outlet in a horizontal direction, the second state information comprises a current swing state of the second air guide assembly and an air outlet angle of the air outlet in a vertical direction, the first air guide assembly is arranged in the air outlet of the corresponding indoor unit in the vertical direction, the first air guide assembly can swing or stop swinging in the horizontal direction to adjust the air outlet angle of the air outlet in the horizontal direction, the second air guide assembly is arranged in the air outlet of the corresponding indoor unit in the horizontal direction, and the second air guide assembly can swing or stop swinging in the vertical direction to adjust the air outlet angle of the air outlet in the vertical direction; determining an actual required refrigeration amount of each indoor unit according to the initial required refrigeration amount, the indoor humidity, the first state information and the second state information corresponding to each indoor unit; determining an actual total required refrigeration amount of the air conditioner according to the actual required refrigeration amount of each indoor unit; determining a target running frequency of the compressor according to the actual total required refrigeration amount; and controlling the compressor to run according to the target running frequency.

[0023] According to the control method of the air conditioner, when refrigeration or dehumidification is carried out, the indoor humidity corresponding to each indoor unit, the first state information corresponding to the first air guide assembly and the second state information corresponding to the second air guide assembly can be obtained, the actual required refrigeration amount of the indoor unit can be calculated comprehensively, the actual total required refrigeration amount of the air conditioner can be determined according to the actual required refrigeration amount of the indoor unit, and the target running frequency of the compressor can be determined according to the actual total required refrigeration amount, so that the running state of the compressor is controlled, thereby improving the refrigeration effect under the condition of large humidity, large air volume and large guide plate opening degree, which is not easy to condense, and avoiding the problem that condensation is easy to occur under the condition of small humidity, small air volume and small guide plate angle, thereby improving the reliability of the air conditioner and the experience of the user.

[0024] Additional aspects and advantages of the present application will be made apparent from the following description. BRIEF DESCRIPTION OF DRAWINGS

[0025] The above and / or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description, taken in conjunction with the following drawings of exemplary embodiments of the present application, wherein:

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

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

[0028] Figure 3 is a structural schematic diagram of an air conditioner according to an embodiment of the present application;

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

[0030] Figure 5 is a state schematic diagram of a wind guide assembly according to another embodiment of the present application;

[0031] Figure 6 is a flowchart of calculating actual required refrigerating capacity of an indoor unit according to indoor humidity and a state of a wind guide assembly according to an embodiment of the present application;

[0032] Figure 7 is a flowchart of calculating actual required refrigerating capacity of an indoor unit according to indoor humidity and a state of a wind guide assembly according to another embodiment of the present application;

[0033] Figure 8 is a flowchart of calculating actual required refrigerating capacity of an indoor unit according to indoor humidity and a state of a wind guide assembly according to another embodiment of the present application;

[0034] Figure 9 is a flowchart of calculating actual required refrigerating capacity of an indoor unit according to indoor humidity and a state of a wind guide assembly according to another embodiment of the present application;

[0035] Figure 10 is a flowchart of a control method of an air conditioner according to an embodiment of the present application. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present application will be apparently and easily understood in combination with the drawings of the embodiments of the present application described below. Obviously, the described embodiments are only part of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0037] In the description of the present application, it needs to be understood that the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0038] The terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified and limited, the term "a plurality of" means two or more.

[0039] In the description of the present application, it needs to be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0040] As shown in FIG. 1, the air conditioner 1 in the present application performs a refrigeration cycle of the air conditioner 1 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 air that has been adjusted and heat-exchanged.

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

[0042] The expansion valve expands the liquid-phase refrigerant in a high-temperature and high-pressure state that is condensed in the condenser and discharged through the condenser outlet pipe into a low-pressure liquid-phase refrigerant. The evaporator evaporates the refrigerant expanded in the expansion valve and returns the refrigerant gas in a low-temperature and low-pressure state to the compressor. The evaporator can achieve a refrigeration effect by exchanging heat with the material to be cooled using the latent heat of evaporation of the refrigerant. Throughout the cycle, the air conditioner 1 can adjust the temperature of the indoor space.

[0043] In the embodiments shown in the present application, the air conditioner 1 further comprises a controller 71, which is a device capable of generating operation control signals according to instruction operation codes and timing signals, and instructing the air conditioner 1 to execute control instructions. For example, in response to a received power-on or power-off instruction issued by a user, the controller 71 can execute operations related to the object selected by the power-on or power-off instruction.

[0044] The embodiments of the present application further provide a hardware structure diagram of the controller 71, as shown in the figure, the controller 71 comprises a processor 83, and optionally further comprises a memory 82 and a communication interface 84 connected with the processor 83. The processor 83, the memory 82 and the communication interface 84 are connected through a bus 81. Figure 2

[0045] The processor 83 can be a central processing unit (CPU), a general processor (NP), a digital signal processing (DSP), a microprocessor, a microcontroller, a programmable logic device (PLD), or any combination thereof. The processor 83 can also be any other device with processing function, such as a circuit, a device or a software module. The processor 83 can also comprise a plurality of CPUs, and the processor 83 can be a single CPU processor 83 or a multi-CPU processor 83. The processor 83 herein can refer to one or more devices, circuits or processing cores for processing data (such as computer program instructions).

[0046] ​The memory 82 can be a readonly memory (ROM) or other type of static storage device that can store static information and instructions, a random access memory (RAM) or other type of dynamic storage device that can store information and instructions, an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CDROM) or other optical disk storage, a magneto-optical disk storage, a magnetic disk storage or other magnetic storage devices, or any other medium capable of storing desired program code in the form of instructions or data structures and that can be accessed by a computer, without any limitation on the present embodiments. The memory 82 can exist independently or be integrated with the processor 83. The memory 82 can contain computer program code. The processor 83 is configured to execute the computer program code stored in the memory 82, thereby implementing the control method of the air conditioner 1 according to the present embodiments.

[0047] The communication interface 84 can be configured to communicate with other devices or communication networks (such as an Ethernet, a radio access network (RAN), a wireless local area network (WLAN), etc. The communication interface 84 can be a module, a circuit, a transceiver, or any device capable of communication.

[0048] The bus 81 can be a peripheral component interconnect (PCI) bus 81 or an extended industry standard architecture (EISA) bus 81, etc. The bus 81 can be divided into an address bus 81, a data bus 81, a control bus 81, etc.

[0049] The following describes the air conditioner 1 and the control method thereof according to the present embodiments. Figures 3-10

[0050] In some embodiments, as shown in Figure 3 The air conditioner 1 includes an outdoor unit 10 and at least one indoor unit 20 associated with the outdoor unit 10. That is, the air conditioner 1 can be a one-to-one air conditioner or a one-to-many air conditioner.

[0051] In some embodiments, as shown in​Figure 3 As shown, the air conditioner 1 can include a refrigerant circulation loop 30, which circulates refrigerant in a loop composed of a compressor, a condenser, an expansion valve, an evaporator, and a four-way valve.

[0052] In some embodiments, as shown in FIG. 1, the air conditioner 1 can include a refrigeration system 40 that performs heat exchange between refrigerant and indoor and outdoor air in a compression refrigeration cycle of the refrigerant circulation loop 30, the refrigeration system 40 including a compressor for performing the work of compressing low-temperature, low-pressure refrigerant gas into high-temperature, high-pressure refrigerant gas and discharging it to a condenser. Figure 3

[0053] In some embodiments, as shown in FIG. 1, the air conditioner 1 can include an outdoor heat exchanger 30 and an indoor heat exchanger 40, one of which operates as a condenser and the other as an evaporator. Figure 3

[0054] In some embodiments, each indoor unit 20 includes a first air guide assembly, a second air guide assembly, and a humidity sensor, wherein the first air guide assembly is disposed in the air outlet of the corresponding indoor unit 20 along the vertical direction, and the first air guide assembly can swing or stop swinging along the horizontal direction to adjust the air outlet angle of the air outlet in the horizontal direction, in other words, the first air guide assembly is the air guide assembly in the left-right direction of the air conditioner 1, which specifically includes an air deflector; the second air guide assembly is disposed in the air outlet of the corresponding indoor unit 20 along the horizontal direction, and the second air guide assembly can swing or stop swinging along the vertical direction to adjust the air outlet angle of the air outlet in the vertical direction, in other words, the first air guide assembly is the air guide assembly in the up-down direction of the air conditioner 1, which specifically includes an air deflector; and the humidity sensor is used to obtain the indoor humidity of the environment in which the corresponding indoor unit 20 is located.

[0055] In some embodiments, as shown in FIG. 1, the air conditioner 1 can include a refrigeration system 40 that performs heat exchange between refrigerant and indoor and outdoor air in a compression refrigeration cycle of the refrigerant circulation loop 30, the refrigeration system 40 including a compressor for performing the work of compressing low-temperature, low-pressure refrigerant gas into high-temperature, high-pressure refrigerant gas and discharging it to a condenser. Figure 3 ​​As shown, the air conditioner 1 can include a controller 71, the controller 71 being configured to, when receiving a control instruction indicating that the air conditioner 1 performs refrigeration or dehumidification, acquire an initial required refrigeration amount of each indoor unit 20, and acquire corresponding indoor humidity of 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, wherein the first state information includes the current swing state of the first air guide assembly and the air outlet angle of the air outlet in the horizontal direction, and the second state information includes the current swing state of the second air guide assembly and the air outlet angle of the air outlet in the vertical direction; determine the actual required refrigeration amount of each indoor unit 20 according to the initial required refrigeration amount, the indoor humidity, the first state information and the second state information corresponding to each indoor unit 20; determine the actual total required refrigeration amount of the air conditioner 1 according to the actual required refrigeration amount of each indoor unit 20; determine the target operating frequency of the compressor according to the actual total required refrigeration amount; and control the compressor to operate according to the target operating frequency.

[0056] Specifically, the air conditioner 1 includes a controller 71 of the compressor, the first air guide assembly of each indoor unit 20, the second air guide assembly and the humidity sensor. When the air conditioner 1 is turned on, the controller 71 receives a control instruction indicating that the air conditioner 1 performs refrigeration or dehumidification. The controller 71 responds to the control instruction and executes a corresponding data acquisition and calculation process. Specifically, the initial required refrigeration amount of each indoor unit 20 can be acquired, i.e. the refrigeration capacity required for the air conditioner 1 to reach the normal set temperature under normal circumstances. At the same time, the controller 71 can acquire corresponding indoor humidity data from the humidity sensor of each indoor unit 20, i.e. the humidity sensor can monitor the indoor humidity in real time and transmit the data to the controller 71, so that the user can know the humidity condition of the current indoor air in real time. Further, the controller 71 can also acquire the current state information of the first air guide assembly and the second air guide assembly of each indoor unit 20, including the first state information corresponding to the first air guide assembly and the second state information corresponding to the second air guide assembly.

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

[0058] Further, according to the initial required refrigerating capacity corresponding to each indoor unit 20, the indoor humidity, the first state information and the second state information, the controller 71 can determine the actual required refrigerating capacity of each indoor unit 20 using an internally preset algorithm, that is, while considering the basic refrigeration requirement, the influence of the indoor humidity and the first air guide assembly and the second air guide assembly state on the refrigeration effect is taken into account, the required refrigerating capacity of each indoor unit 20 is corrected comprehensively to obtain the actual required refrigerating capacity of each indoor unit 20.

[0059] Further, after the actual required refrigerating capacity of each indoor unit 20 is calculated, the controller 71 can determine the actual total required refrigerating capacity of the air conditioner 1 according to the actual required refrigerating capacity of each indoor unit 20, that is, the total refrigeration capacity required to meet the refrigeration or dehumidification requirements of all indoor units 20 under the current working condition.

[0060] Further, the controller 71 can determine the target operating frequency of the compressor according to the actual total required refrigerating capacity, and send a corresponding control signal according to the target operating frequency to accurately control the operating state of the compressor, so that the air conditioner 1 can operate at the correct frequency to achieve efficient refrigeration or dehumidification effect, while effectively preventing condensation and other problems, and improving user comfort.

[0061] According to the air conditioner 1 of the embodiment of the present application, when the air conditioner 1 is refrigerating or dehumidifying, the indoor humidity corresponding to each indoor unit 20, the first state information corresponding to the first air guide assembly and the second state information corresponding to the second air guide assembly can be obtained, and the actual required refrigerating capacity of the indoor unit 20 is calculated comprehensively, and the actual total required refrigerating capacity of the air conditioner 1 is determined according to the actual required refrigerating capacity of the indoor unit 20, and further, the target operating frequency of the compressor can be determined according to the actual total required refrigerating capacity, and the operating state of the compressor is controlled, so that when refrigerating or dehumidifying, the operating frequency of the compressor is comprehensively controlled according to the indoor humidity, the operating state and the air outlet angle of the air guide assembly of the air conditioner, so that the refrigeration effect is improved under the condition of high humidity, large air volume and large guide plate opening degree, and the problem of easy condensation under the condition of small humidity, small air volume and small guide plate angle and multi-angle air supply is avoided, thereby improving the reliability of the air conditioner 1 and the user experience.

[0062] In one embodiment of the present application, when the actual required refrigerating capacity of each indoor unit 20 is determined according to the initial required refrigerating capacity corresponding to each indoor unit 20, the indoor humidity, the first state information and the second state information, the controller 71 is configured to: determine a corresponding humidity coefficient according to the indoor humidity; determine a corresponding air outlet coefficient according to the first state information and the second state information; and correct the initial required refrigerating capacity according to the humidity coefficient and the air outlet coefficient to obtain the actual required refrigerating capacity.

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

[0064] Further, after obtaining the humidity coefficient and the air outlet coefficient, the controller 71 can correct the initial required cooling capacity according to the humidity coefficient and the air outlet coefficient, so that the corrected cooling capacity is closer to the actual cooling demand, so as to achieve more efficient and comfortable cooling effect.

[0065] In an embodiment of the present application, when determining the corresponding humidity coefficient according to the indoor humidity, the controller 71 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.

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

[0067] In an embodiment of the present application, when determining the corresponding humidity coefficient according to the indoor humidity, the controller 71 is configured to obtain the humidity coefficient corresponding to the indoor humidity by querying a pre-calibrated humidity and humidity coefficient two-dimensional relationship mapping table based on the indoor humidity, wherein the humidity and humidity coefficient two-dimensional relationship mapping table includes a plurality of corresponding relationships between humidity and humidity coefficient, and the corresponding relationship between the indoor humidity and the humidity coefficient corresponding thereto is included in the plurality of corresponding relationships between humidity and humidity coefficient.

[0068] Specifically, when the corresponding humidity coefficient is determined according to the indoor humidity, the corresponding humidity coefficient of the indoor humidity can be obtained through a pre-calibrated humidity and humidity coefficient two-dimensional relationship mapping table. Specifically, the corresponding humidity coefficients under different humidity conditions can be calibrated in advance through experimental data or empirical theory, and stored in the form of a table, forming a humidity and humidity coefficient two-dimensional relationship mapping table, which contains a plurality of corresponding relationships between humidity and humidity coefficients, and the corresponding relationship between the indoor humidity and the corresponding humidity coefficient is included in the plurality of corresponding relationships between humidity and humidity coefficients.

[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, and the corresponding humidity coefficient.

[0070] Indoor humidity Humidity coefficient Reference value ≥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 an embodiment of the present application, the air outlet coefficient includes an air outlet angle coefficient. 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 assembly is not opened and swung, the air outlet angle of the air outlet in the horizontal direction is within the first preset angle interval, and the second air guide assembly is not opened and swung, the air outlet angle coefficient is determined according to the air outlet angle of the air outlet in the vertical direction, wherein different air outlet angles of the air outlet in the vertical direction correspond to different air outlet angle coefficients.

[0073] Specifically, the air outlet coefficient includes an air outlet angle coefficient, which is used to represent the influence degree of the offset angle of the air outlet in the vertical direction on the cooling or dehumidifying effect. When the corresponding air outlet coefficient is determined according to the first state information and the second state information, if the first air guide assembly is not opened and swung, i.e. in a fixed position, at this time, if the air outlet angle of the air outlet in the horizontal direction is within the first preset angle interval, and the second air guide assembly is not opened and swung, i.e. the air outlet angle of the air outlet in the horizontal direction satisfies a certain preset range and the second air guide assembly is also in a fixed position, the air outlet angle coefficient can be determined according to the air outlet angle of the air outlet in the vertical direction, wherein different air outlet angles of the air outlet in the vertical direction correspond to different air outlet angle coefficients. For example, when the air outlet angle of the air outlet in the vertical direction is small, the air outlet angle coefficient may be small, indicating that the cooling or dehumidifying efficiency is low, and when the air outlet angle of the air outlet in the vertical direction is large, the air outlet angle coefficient may be large, indicating that the cooling or dehumidifying efficiency is high.

[0074] In one embodiment of the present application, 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 according to the first state information and the second state information, the controller 71 is configured to: when the second air guide component is not opened for swing and the first air guide component is opened for swing or the air outlet angle of the air outlet in the horizontal direction is outside the first preset angle interval, determine the air outlet angle coefficient according to the air outlet angle of the air outlet in the vertical direction, and obtain the first swing coefficient pre-stored in the indoor unit 20, wherein different air outlet angles of the air outlet 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 swing coefficient corresponding to the first air guide component, wherein the air outlet angle coefficient is used to represent the influence degree of the offset angle of the air outlet in the vertical direction on the refrigeration or dehumidification effect, and the first swing coefficient corresponding to the first air guide component is used to represent the influence degree of the offset angle of the air outlet in the horizontal direction on the refrigeration or dehumidification effect. When determining the corresponding air outlet coefficient according to the first state information and the second state information, if the second air guide component is not opened for swing, i.e., is in a fixed position, at this time, if the first air guide component is opened for swing or the air outlet angle of the air outlet in the horizontal direction is outside the first preset angle interval, i.e., the first air guide component swings left and right or the air outlet angle of the air outlet in the horizontal direction exceeds the preset range, the air outlet angle coefficient can be determined according to the air outlet angle of the air outlet in the vertical direction, and the first swing coefficient pre-stored in the indoor unit 20 is obtained, wherein different air outlet angles of the air outlet in the vertical direction correspond to different air outlet angle coefficients. For example, when the air outlet angle of the air outlet in the vertical direction is small, the air outlet angle coefficient is likely to be small, indicating that the refrigeration or dehumidification efficiency is low, and when the air outlet angle of the air outlet in the vertical direction is large, the air outlet angle coefficient is likely to be large, indicating that the refrigeration or dehumidification efficiency is high.

[0076] In one embodiment of the present application, the air outlet coefficient includes a second swing coefficient corresponding to the second air guide component. When determining the corresponding air outlet coefficient 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 opened for swing and the air outlet angle of the air outlet in the horizontal direction is within the first preset angle interval, and the second air guide component is opened for swing, obtain the second swing coefficient pre-stored in the indoor unit 20.

[0077] Specifically, the air outlet coefficient includes a second swing coefficient corresponding to the second air guide assembly, and is used to represent an influence degree of the offset angle of the air outlet in the vertical direction on the refrigeration or dehumidification effect. When the corresponding air outlet coefficient is determined according to the first state information and the second state information, if the first air guide assembly does not swing, that is, is in a fixed position, at this time, if the air outlet angle of the air outlet in the horizontal direction is within the first preset angle interval, and the second air guide assembly swings, that is, the air outlet angle of the air outlet in the horizontal direction satisfies a certain preset range, and the second air guide assembly starts to swing in the vertical direction, the second swing coefficient pre-stored in the indoor unit 20 can be obtained.

[0078] In an embodiment of the present application, the air outlet coefficient includes a first swing coefficient corresponding to the first air guide assembly and a second swing coefficient corresponding to the second air guide assembly. 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 assembly swings or the air outlet angle of the air outlet in the horizontal direction is outside the first preset angle interval, and the second air guide assembly swings, the first swing coefficient and the second swing coefficient pre-stored in the indoor unit 20 are obtained.

[0079] Specifically, the air outlet coefficient includes a first swing coefficient corresponding to the first air guide assembly and a second swing coefficient corresponding to the second air guide assembly, and is used to represent an influence degree of the offset angle of the air outlet in the horizontal or vertical direction on the refrigeration or dehumidification effect. When the corresponding air outlet coefficient is determined according to the first state information and the second state information, when the first air guide assembly swings or the air outlet angle of the air outlet in the horizontal direction is outside the first preset angle interval, that is, the first air guide assembly swings left and right or the air outlet angle of the air outlet in the horizontal direction exceeds the preset range, if the second air guide assembly swings, that is, the second air guide assembly starts to swing in the vertical direction, the first swing coefficient and the second swing coefficient pre-stored in the indoor unit 20 can be obtained.

[0080] In an embodiment of the present application, when the initial required refrigeration amount is corrected according to the humidity coefficient and the air outlet coefficient to obtain the actual required refrigeration amount, the controller 71 is configured to: multiply the initial required refrigeration amount, the humidity coefficient and the air outlet coefficient to correct the initial required refrigeration amount to obtain the actual required refrigeration amount.

[0081] Specifically, when the initial required refrigerating capacity is corrected according to the humidity coefficient and the air outlet coefficient to obtain the actual required refrigerating capacity, the initial required refrigerating capacity, the humidity coefficient and the air outlet coefficient can be multiplied, that is, the initial required refrigerating capacity is corrected in two steps, first according to the humidity coefficient and then according to the air outlet coefficient, and the effects of indoor humidity, the first air guide component state and the second air guide component state on the refrigerating capacity are comprehensively considered, so that a more accurate actual required refrigerating capacity is obtained. For example, if the initial required refrigerating capacity is 1000W, the humidity coefficient is 0.8, and the air outlet coefficient is 0.9, the actual required refrigerating capacity is calculated as follows: actual required refrigerating capacity = initial required refrigerating capacity x humidity coefficient x air outlet coefficient = 1000W x 0.8 x 0.9 = 720W.

[0082] In an embodiment of the present application, when the actual total required refrigerating capacity of the air conditioner 1 is determined according to the actual required refrigerating capacities of the indoor units 20, the controller 71 is configured to multiply the sum of the actual required refrigerating capacities of the indoor units 20 by the pre-stored outdoor environment temperature correction coefficient to obtain the actual total required refrigerating capacity of the air conditioner 1.

[0083] Specifically, when the actual total required refrigerating capacity of the air conditioner 1 is determined according to the actual required refrigerating capacities of the indoor units 20, the controller 71 can sum the calculated actual required refrigerating capacities of the indoor units 20 to obtain the total required refrigerating capacity of the entire air conditioner 1. Further, to avoid the influence of the outdoor environment temperature on the refrigerating effect of the air conditioner 1, for example, in an extremely high-temperature outdoor environment, the air conditioner 1 may consume more energy to achieve the same refrigerating effect, the obtained total required refrigerating capacity can be multiplied by the pre-stored outdoor environment temperature correction coefficient to obtain the actual total required refrigerating capacity of the air conditioner 1, that is, the actual total required refrigerating capacity of the air conditioner 1 = (sum of the actual required refrigerating capacities of the indoor units 20) x outdoor environment temperature correction coefficient.

[0084] In specific embodiments, the outdoor environment temperature correction coefficient can be pre-set according to historical data, experimental results or professional experience, and is used to reflect the changes in refrigerating capacity of the air conditioner 1 under different outdoor environment temperatures.

[0085] In specific embodiments, 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…), and the indoor humidity coefficient Khi can be calculated according to the following formula: Figure 4 and Figure 5As shown, the state of the air guide assembly includes the state of the first air guide assembly and the state of the second air guide assembly, wherein the state of the first air guide assembly includes that the air outlet of the first air guide assembly in the horizontal direction is within the first preset angle interval, i.e. the swing position of the first air guide assembly is centered, deviates from the center position by 10° or less on the left and right, and the first air guide assembly is opened and swung or the air outlet in the horizontal direction is outside the first preset angle interval, i.e. the first air guide assembly swings left and right or is biased to one side (deviates from the center position by more than 10°), and the corresponding first swing coefficient can be denoted as Kwi; the state of the second air guide assembly includes being fixed in the vertical direction, and can be divided into three air outlet angle ranges according to four positions, i.e. position 1, position 2, position 3 and position 4, wherein 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, and the corresponding air outlet angle coefficient can be denoted as Kdi(i=1, 2, 3). Specifically, the corresponding relationship between the air outlet angle coefficient and the air outlet angle is shown in Table 2. Further, when the second air guide assembly swings in the vertical direction, the corresponding second swing coefficient can be denoted as K1.

[0086]

[0087] Table 2

[0088] In summary, when the air conditioner 1 is in the cooling or dehumidifying mode, according to the indoor humidity and the state of the air guide assembly, the following four scenarios can be divided: Figure 6 As shown, under different indoor humidities, for example, taking the case where the indoor humidity reaches 90 degrees, the first air guide assembly is not opened and swung, and the air outlet in the horizontal direction is within the first preset angle interval, and the second air guide assembly is not opened and swung. At this time, if the angle of the air outlet of the second air guide assembly in the vertical direction is in the second angle range, the actual required cooling capacity of the indoor unit 20 is Qin-oni*Kh1*Kd2, wherein Qin-oni represents the initial required cooling capacity, Kh1 represents the indoor humidity coefficient corresponding to the indoor humidity reaching 90 degrees, and Kd2 represents the air outlet angle coefficient corresponding to the angle of the air outlet of the second air guide assembly in the vertical direction being in the second angle range. Similarly, under different indoor humidities, the angle of the air outlet of the second air guide assembly in the vertical direction is different, and the actual required cooling capacity of the indoor unit 20 is different. Specifically, refer to Table 1 and Table 2 for calculation, which will not be repeated here.

[0089] The second scenario combines Figure 7As shown, under different indoor humidities, for example, taking the case that the indoor humidity reaches 90 degrees, the second air guide assembly is not opened to swing, and the first air guide assembly is opened to swing or the air outlet angle in the horizontal direction of the air outlet is outside the first preset angle interval, at this time, if the angle of the air outlet of the second air guide assembly in the vertical direction is in the second angle range, the actual demand refrigerating capacity of the indoor unit 20 is Qin-oni*Kh1*Kd2*Kwi, wherein Qin-oni represents the initial demand refrigerating capacity, Kh1 represents the indoor humidity coefficient corresponding to the case that the indoor humidity reaches 90 degrees, Kd2 represents the air outlet angle coefficient corresponding to the case that the angle of the air outlet of the second air guide assembly in the vertical direction is in the second angle range, and Kwi represents the first swing coefficient, and the like. Under different indoor humidities, the angle of the air outlet of the second air guide assembly in the vertical direction is different, and the actual demand refrigerating capacity of the indoor unit 20 is different, which can be calculated with reference to Table 1 and Table 2, and details are not described herein.

[0090] The third: combination Figure 8 As shown, under different indoor humidities, for example, taking the case that the indoor humidity reaches 90 degrees, the first air guide assembly is not opened to swing and the air outlet angle in the horizontal direction of the air outlet is within the first preset angle interval, and the second air guide assembly is opened to swing, at this time, the actual demand refrigerating capacity of the indoor unit can be calculated according to the angle of the air outlet of the second air guide assembly in the vertical direction, and the calculation formula is Qin-oni*Kh1*K1, wherein Qin-oni represents the initial demand refrigerating capacity, Kh1 represents the indoor humidity coefficient corresponding to the case that the indoor humidity reaches 90 degrees, and K1 represents the second swing coefficient. Under different indoor humidities, the actual demand refrigerating capacity of the indoor unit 20 is different, which can be calculated with reference to Table 1, and details are not described herein.

[0091] The fourth: combination Figure 9 As shown, under different indoor humidities, for example, taking the case that the indoor humidity reaches 90 degrees, the first air guide assembly is opened to swing or the air outlet angle in the horizontal direction of the air outlet is outside the first preset angle interval, and the second air guide assembly is opened to swing, at this time, the actual demand refrigerating capacity of the indoor unit can be calculated in combination with the angle of the air outlet of the first air guide assembly in the horizontal direction and the angle of the air outlet of the second air guide assembly in the vertical direction, and the calculation formula is Qin-oni*Kh1*K1*Kwi, wherein Qin-oni represents the initial demand refrigerating capacity, Kh1 represents the indoor humidity coefficient corresponding to the case that the indoor humidity reaches 90 degrees, K1 represents the second swing coefficient, and Kwi represents the first swing coefficient. Under different indoor humidities, the actual demand refrigerating capacity of the indoor unit 20 is different, which can be calculated with reference to Table 1, and details are not described herein.

[0092] In one embodiment of the present application, when determining the target operating frequency of the compressor according to the actual total required cooling capacity, the controller 71 is configured to perform the following operation:

[0093] Fre aim = Kao * Q * Kbo

[0094] wherein Fre aim is the target operating frequency, Q is the actual total required cooling capacity of the air conditioner 1, and Kao and Kbo are two constants determined according to the compressor output capacity curve.

[0095] Specifically, when determining the target operating frequency of the compressor according to the actual total required cooling capacity, the above formula can be performed, wherein Fre aim is the target operating frequency, i.e. the operating frequency required to achieve the actual total required cooling capacity of the air conditioner 1, Q is the actual total required cooling capacity of the air conditioner 1, i.e. the total cooling capacity provided by the air conditioner 1, and Kao and Kbo are two constants determined according to the compressor output capacity curve, i.e. correction constants of the compressor during operation, which are usually fixed values.

[0096] In one embodiment of the present application, when obtaining the initial required cooling capacity of each indoor unit 20, the controller 71 is configured to determine the initial required cooling capacity corresponding to each indoor unit 20 according to 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 working cycle temperature correction coefficient, and single working capacity correction coefficient.

[0097] Specifically, when obtaining the initial required cooling capacity of each indoor unit 20, the controller 71 can determine the initial required cooling capacity corresponding to each indoor unit 20 according to parameters pre-stored in each indoor unit 20, wherein the parameters include: indoor unit 20 capacity code, which is used to represent the rated cooling capacity of the indoor unit 20; model correction coefficient, which is 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; temperature difference correction coefficient, which is a coefficient for correcting the cooling capacity according to the actual temperature difference; air volume correction coefficient, which is a coefficient for correcting the cooling capacity according to the actual air volume; high efficiency correction coefficient, which is a coefficient for correcting the cooling capacity according to the current operating mode of the air conditioner 1; single working cycle temperature correction coefficient, which is a coefficient for correcting the cooling capacity according to the ambient temperature of the single indoor unit 20; and single working capacity correction coefficient, which is a coefficient for correcting the cooling capacity according to the cooling capacity of the single indoor unit 20.

[0098] In a specific embodiment, the initial required cooling capacity of the indoor unit 20 = indoor unit 20 capacity code x model correction coefficient x temperature difference correction coefficient x air volume correction coefficient x high efficiency correction coefficient x single working cycle temperature correction coefficient x single working capacity correction coefficient.

[0099] According to the air conditioner 1 of the embodiment of the present application, when the air conditioner 1 is cooling or dehumidifying, the indoor humidity corresponding to each indoor unit 20, the first state information corresponding to the first air guide assembly, and the second state information corresponding to the second air guide assembly can be obtained, and the actual required cooling capacity of the indoor unit 20 can be calculated comprehensively, and the actual total required cooling capacity of the air conditioner 1 can be determined according to the actual required cooling capacity of the indoor unit 20, and further, the target operating frequency of the compressor can be determined according to the actual total required cooling capacity, and the operating state of the compressor is controlled, so that when cooling or dehumidifying, the operating frequency of the compressor is comprehensively controlled according to the indoor humidity, the operating state and the air outlet angle of the air guide assembly of the air conditioner, the cooling effect in the case of large humidity, large air volume, and large guide plate opening degree, which is not prone to condensation, can be improved, and the problem of easy condensation in the case of small humidity, small air volume, and small guide plate angle, which is prone to multi-angle air supply, can be avoided, thereby improving the reliability of the air conditioner 1 and the user experience.

[0100] Reference will be made to the accompanying drawings Figure 10 to describe the control method of the air conditioner of the embodiment of the present application.

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

[0102] Step S1, when a control instruction for indicating the air conditioner to cool or dehumidify is received, the initial required cooling capacity of each indoor unit is obtained, and the indoor humidity corresponding to each indoor unit, the first state information corresponding to the first air guide assembly, and the second state information corresponding to the second air guide assembly are obtained, wherein the first state information includes the current swing state of the first air guide assembly and the air outlet angle of the air outlet in the horizontal direction, the second state information includes the current swing state of the second air guide assembly and the air outlet angle of the air outlet in the vertical direction, the first air guide assembly is arranged in the air outlet of the corresponding indoor unit along the vertical direction, and the first air guide assembly can swing or stop swinging in the horizontal direction to adjust the air outlet angle of the air outlet in the horizontal direction, the second air guide assembly is arranged in the air outlet of the corresponding indoor unit along the horizontal direction, and the second air guide assembly can swing or stop swinging in the vertical direction to adjust the air outlet angle of the air outlet in the vertical direction.

[0103] Step S2, determining the actual required cooling capacity of each indoor unit according to the initial required cooling capacity, the indoor humidity, the first state information, and the second state information corresponding to each indoor unit.

[0104] Step S3, determining the actual total required cooling capacity of the air conditioner according to the actual required cooling capacity of each indoor unit.

[0105] Step S4, determining the target operating frequency of the compressor according to the actual total required cooling capacity.

[0106] Step S5, controlling the compressor to operate according to the target operating frequency.

[0107] In some embodiments, when determining the actual required refrigerating capacity of each indoor unit according to the initial required refrigerating capacity corresponding to each indoor unit, the indoor humidity, the first state information and the second state information, specifically comprising: determining the humidity coefficient corresponding to the indoor humidity; determining the air outlet coefficient corresponding to the first state information and the second state information; correcting the initial required refrigerating capacity according to the humidity coefficient and the air outlet coefficient to obtain the actual required refrigerating capacity.

[0108] In some embodiments, when determining the humidity coefficient corresponding to the indoor humidity, specifically comprising: obtaining the humidity coefficient corresponding to the indoor humidity by linear interpolation based on the pre-labeled humidity and humidity coefficient fitting curve.

[0109] In some embodiments, when determining the humidity coefficient corresponding to the indoor humidity, further comprising: obtaining the humidity coefficient corresponding to the indoor humidity by querying the pre-labeled humidity and humidity coefficient two-dimensional relationship mapping table based on the indoor humidity, wherein the humidity and humidity coefficient two-dimensional relationship mapping table includes a plurality of corresponding relationships between humidity and humidity coefficients, and the corresponding relationship between the indoor humidity and the humidity coefficient corresponding thereto is included in the plurality of corresponding relationships between humidity and humidity coefficients.

[0110] In some embodiments, the air outlet coefficient includes an air outlet angle coefficient, and when determining the air outlet coefficient corresponding to the first state information and the second state information, specifically comprising: when the first air guide assembly is not opened for swinging and the air outlet angle of the air outlet in the horizontal direction is within the first preset angle interval, and the second air guide assembly is not opened for swinging, determining the air outlet angle coefficient according to the air outlet angle of the air outlet in the vertical direction, wherein different air outlet angles of the air outlet 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 swing coefficient corresponding to the first air guide assembly, and when determining the air outlet coefficient corresponding to the first state information and the second state information, further comprising: when the second air guide assembly is not opened for swinging, and the first air guide assembly is opened for swinging or the air outlet angle of the air outlet in the horizontal direction is outside the first preset angle interval, determining the air outlet angle coefficient according to the air outlet angle of the air outlet in the vertical direction, and obtaining the first swing coefficient pre-stored in the indoor unit, wherein different air outlet angles of the air outlet in the vertical direction correspond to different air outlet angle coefficients.

[0112] In some embodiments, the air outlet coefficient includes a second swing coefficient corresponding to the second air guide component, and when the corresponding air outlet coefficient is determined according to 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 of the air outlet in the horizontal direction is within the first preset angle range, and the second air guide component is swinging, obtaining the second swing coefficient pre-stored in the indoor unit.

[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, and when the corresponding air outlet coefficient is determined according to the first state information and the second state information, the method further includes: when the first air guide component is swinging or the air outlet angle of the air outlet in the horizontal direction is outside the first preset angle range, and the second air guide component is swinging, obtaining the first swing coefficient and the second swing coefficient pre-stored in the indoor unit.

[0114] In some embodiments, when the initial required refrigerating capacity is corrected according to the humidity coefficient and the air outlet coefficient to obtain the actual required refrigerating capacity, the method specifically includes: multiplying the initial required refrigerating capacity, the humidity coefficient and the air outlet coefficient to correct the initial required refrigerating capacity and obtain the actual required refrigerating capacity.

[0115] In some embodiments, when the actual total required refrigerating capacity of the air conditioner is determined according to the actual required refrigerating capacities of the indoor units, the method specifically includes: summing the actual required refrigerating capacities of the indoor units, and then multiplying the sum value obtained and the pre-stored outdoor environment temperature correction coefficient to obtain the actual total required refrigerating capacity of the air conditioner.

[0116] In some embodiments, when the target operating frequency of the compressor is determined according to the actual total required refrigerating capacity, the specific operation formula is:

[0117] Fre_aim=Kao*Q*Kbo

[0118] Wherein, Fre_aim is the target operating frequency, Q is the actual total required refrigerating capacity of the air conditioner, and Kao and Kbo are two constants determined according to the compressor output capacity curve.

[0119] In some embodiments, when the initial required refrigerating capacity of each indoor unit is obtained, the method specifically includes: determining the initial required refrigerating capacity corresponding to each indoor unit according to pre-stored parameters 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 working cycle temperature correction coefficient and single working cycle capacity correction coefficient.

[0120] It should be noted that when the air conditioner is controlled, the specific implementation manner is similar to that of the air conditioner of any one of the above-mentioned embodiments of the present application, and thus the detailed exemplary description of the control process of the air conditioner can be referred to the foregoing description of the air conditioner, and to reduce redundancy, the detailed exemplary description of the control process of the air conditioner is not repeated here.

[0121] According to the control method of the air conditioner, when the air conditioner is in cooling or dehumidifying, the indoor humidity corresponding to each indoor unit, the first state information corresponding to the first air guide assembly and the second state information corresponding to the second air guide assembly can be obtained, the actual required cooling capacity of the indoor unit is calculated comprehensively, the actual total required cooling capacity of the air conditioner is determined according to the actual required cooling capacity of the indoor unit, and further, the target operating frequency of the compressor can be determined according to the actual total required cooling capacity, and the operating state of the compressor is controlled, so that when cooling or dehumidifying, the operating frequency of the compressor is comprehensively controlled according to the indoor humidity, the operating state and the air outlet angle of the air guide assembly of the air conditioner, the cooling effect in the case of high humidity, large air volume and large guide plate opening degree, which is not easy to condense, can be improved, and the problem of easy condensation in the case of small humidity, small air volume and small guide plate angle, multi-angle air supply is avoided, and thus the reliability of the air conditioner and the experience of the user are improved.

[0122] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the exemplary description of the above terms does not necessarily refer to the same embodiment or example.

[0123] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. An air conditioner characterized by comprising: The air conditioner comprises: an outdoor unit and at least one indoor unit connected to the outdoor unit; a refrigerant circulation loop in which refrigerant circulates in a loop composed of a compressor, a condenser, an expansion valve, an evaporator and a 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 comprising the compressor for performing the work of compressing low-temperature and low-pressure refrigerant gas into high-temperature and high-pressure refrigerant gas and discharging it to the condenser; an outdoor heat exchanger and an indoor heat exchanger, one of which works as the condenser and the other works as the evaporator; each indoor unit comprises: a first air guide assembly, a second air guide assembly and a humidity sensor; the first air guide assembly is arranged at the air outlet of the corresponding indoor unit in the vertical direction, and the first air guide assembly can swing or stop swinging in the horizontal direction to adjust the air outlet angle of the air outlet in the horizontal direction; the second air guide assembly is arranged at the air outlet of the corresponding indoor unit in the horizontal direction, and the second air guide assembly can swing or stop swinging in the vertical direction to adjust the air outlet angle of the air outlet in the vertical direction; the humidity sensor is used to obtain the indoor humidity of the environment where the corresponding indoor unit is located; a controller, the controller is connected with the compressor, the first air guide assembly, the second air guide assembly and the humidity sensor of each indoor unit, and the controller is configured to: when receiving a control instruction for indicating the air conditioner to perform refrigeration or dehumidification, obtaining the initial required refrigeration amount of each indoor unit, and obtaining the indoor humidity corresponding to each indoor unit, the first state information corresponding to the first air guide assembly and the second state information corresponding to the second air guide assembly, wherein the first state information includes the current swing state of the first air guide assembly and the air outlet angle of the air outlet in the horizontal direction, and the second state information includes the current swing state of the second air guide assembly and the air outlet angle of the air outlet in the vertical direction; determining the actual required refrigeration amount of each indoor unit according to the initial required refrigeration amount, the indoor humidity, the first state information and the second state information corresponding to each indoor unit; determining the actual total required refrigeration amount of the air conditioner according to the actual required refrigeration amount of each indoor unit; determining the target operating frequency of the compressor according to the actual total required refrigeration amount; controlling the compressor to operate according to the target operating frequency.

2. The air conditioner according to claim 1, wherein when determining the actual required refrigeration amount of each indoor unit according to the initial required refrigeration amount, the indoor humidity, the first state information and the second state information corresponding to each indoor unit, the controller is configured to: determining the corresponding humidity coefficient according to the indoor humidity; determining the corresponding air outlet coefficient according to the first state information and the second state information; correcting the initial required refrigeration amount according to the humidity coefficient and the air outlet coefficient to obtain the actual required refrigeration amount.

3. The air conditioner of claim 2, wherein when determining the corresponding humidity coefficient according to the indoor humidity, the controller is configured to: The indoor humidity corresponds to the humidity coefficient is obtained by linear interpolation based on the humidity and humidity coefficient fitting curve calibrated in advance.

4. The air conditioner of claim 2, wherein In determining the corresponding humidity coefficient according to the indoor humidity, the controller is configured to: obtain the humidity coefficient corresponding to the indoor humidity by querying a humidity and humidity coefficient two-dimensional relationship mapping table calibrated in advance based on the indoor humidity, wherein the humidity and humidity coefficient two-dimensional relationship mapping table includes a plurality of corresponding relationships between humidity and humidity coefficients, and the corresponding relationship between the indoor humidity and the humidity coefficient corresponding thereto is included in the plurality of corresponding relationships between humidity and humidity coefficients.

5. The air conditioner of claim 2, wherein The air outlet coefficient includes an air outlet angle coefficient, and in determining the corresponding air outlet coefficient according to the first state information and the second state information, the controller is configured to: when the first air guide assembly is not opened for swinging, the air outlet angle of the air outlet in the horizontal direction is within a first preset angle interval, and the second air guide assembly is not opened for swinging, the air outlet angle coefficient is determined according to the air outlet angle of the air outlet in the vertical direction, wherein different air outlet angles of the air outlet in the vertical direction correspond to different air outlet angle coefficients.

6. The air conditioner of claim 2, wherein The air outlet coefficient includes an air outlet angle coefficient and a first swing coefficient corresponding to the first air guide assembly, and in determining the corresponding air outlet coefficient according to the first state information and the second state information, the controller is configured to: when the second air guide assembly is not opened for swinging, and the first air guide assembly is opened for swinging or the air outlet angle of the air outlet in the horizontal direction is outside the first preset angle interval, the air outlet angle coefficient is determined according to the air outlet angle of the air outlet in the vertical direction, and the first swing coefficient pre-stored in the indoor unit is obtained, wherein different air outlet angles of the air outlet in the vertical direction correspond to different air outlet angle coefficients.

7. The air conditioner of claim 2, wherein The air outlet coefficient includes a second swing coefficient corresponding to the second air guide assembly, and in determining the corresponding air outlet coefficient according to the first state information and the second state information, the controller is configured to: when the first air guide assembly is not opened for swinging, the air outlet angle of the air outlet in the horizontal direction is within a first preset angle interval, and the second air guide assembly is opened for swinging, the second swing coefficient pre-stored in the indoor unit is obtained.

8. The air conditioner of claim 2, wherein The air outlet coefficient includes a first swing coefficient corresponding to the first air guide assembly and a second swing coefficient corresponding to the second air guide assembly, and in determining the corresponding air outlet coefficient according to the first state information and the second state information, the controller is configured to: when the first air guide assembly is opened for swinging or the air outlet angle of the air outlet in the horizontal direction is outside the first preset angle interval, and the second air guide assembly is opened for swinging, the first swing coefficient and the second swing coefficient pre-stored in the indoor unit are obtained.

9. The air conditioner of claim 2, wherein In correcting the initial required refrigerating capacity according to the humidity coefficient and the air outlet coefficient to obtain the actual required refrigerating capacity, the controller is configured to: multiply the initial required refrigerating capacity, the humidity coefficient and the air outlet coefficient to correct the initial required refrigerating capacity to obtain the actual required refrigerating capacity.

10. The air conditioner of claim 1, wherein In determining the actual total required refrigerating capacity of the air conditioner according to the actual required refrigerating capacity of each indoor unit, the controller is configured to: multiply the sum obtained by the pre-stored outdoor ambient temperature correction coefficient to obtain the actual total required refrigerating capacity of the air conditioner.

11. The air conditioner of claim 1, wherein In determining the target operating frequency of the compressor according to the actual total required refrigerating capacity, the controller is configured to perform the following operation: Fre_aim=Kao×Q+Kbo; wherein Fre_aim is the target operating frequency, Q is the actual total required refrigerating capacity of the air conditioner, and Kao and Kbo are two constants determined according to the compressor output capacity curve.

12. The air conditioner of claim 1, wherein In obtaining the initial required refrigerating capacity of each indoor unit, the controller is configured to: determine the initial required refrigerating capacity corresponding to each indoor unit according to pre-stored parameters of 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 working cycle temperature correction coefficient and single working cycle capacity correction coefficient.

13. A control method of an air conditioner, characterized by, The method for the air conditioner according to any one of claims 1-12, comprising the following steps: Upon receiving a control instruction for instructing the air conditioner to perform refrigeration or dehumidification, obtaining the initial required refrigerating capacity of each indoor unit, and obtaining the indoor humidity corresponding to each indoor unit, the first state information corresponding to the first air guide assembly and the second state information corresponding to the second air guide assembly, wherein the first state information includes the current swing state of the first air guide assembly and the air outlet angle of the air outlet in the horizontal direction, the second state information includes the current swing state of the second air guide assembly and the air outlet angle of the air outlet in the vertical direction, the first air guide assembly is arranged in the vertical direction at the air outlet of the corresponding indoor unit, the first air guide assembly can swing or stop swinging in the horizontal direction to adjust the air outlet angle of the air outlet in the horizontal direction, the second air guide assembly is arranged in the horizontal direction at the air outlet of the corresponding indoor unit, and the second air guide assembly can swing or stop swinging in the vertical direction to adjust the air outlet angle of the air outlet in the vertical direction; determining the actual required refrigerating capacity of each indoor unit according to the initial required refrigerating capacity, the indoor humidity, the first state information and the second state information corresponding to each indoor unit; determining the actual total required refrigerating capacity of the air conditioner according to the actual required refrigerating capacity of each indoor unit; determining the target operating frequency of the compressor according to the actual total required refrigerating capacity; controlling the compressor to operate according to the target operating frequency.

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