Air conditioner and comfort control method of air conditioner

Abstract

An air conditioner is provided. The air conditioner comprises an outdoor unit, an indoor unit, a human body detection device and a controller. The indoor unit is connected with the outdoor unit and comprises an air outlet and a fan. The human body detection device is configured to detect the distance and the relative angle between a human body and the air outlet. The controller is configured to obtain an identification signal of the human body detection device and the current rotating speed of the fan when it is determined that the comfortable air supply function of the air conditioner is started; when it is determined that the human body exists in the preset air supply coverage range of the indoor unit according to the recognition signal, the air speed of the position where the user is located is calculated according to the distance and the current rotating speed; and when the air speed of the position where the user is located is higher than a preset air speed upper limit value, the fan is controlled to reduce the rotating speed. The identification signal comprises the distance and the relative angle between the human body and the air outlet.

Description

Air conditioner and comfort control method thereof

[0001] This application claims priority to Chinese patent application No. 202210650362.X filed on June 10, 2022 and priority to Chinese patent application No. 202210650529.2 filed on June 10, 2022, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present disclosure relates to the technical field of household appliances, and in particular to an air conditioner and a comfort control method for the air conditioner. Background Art

[0003] Air conditioners are one of the most commonly used electrical appliances in household life. With the improvement of people's living standards, there are higher requirements for the performance of air conditioners in all aspects.

[0004] Summary of the Invention

[0005] In one aspect, an air conditioner is provided. The air conditioner includes: an outdoor unit, an indoor unit, a human body detection device, and a controller. The indoor unit is connected to the outdoor unit and includes an air outlet and a fan. The human body detection device is configured to detect the distance and relative angle between a human body and the air outlet. The controller is configured to obtain an identification signal from the human body detection device and a current rotation speed of the fan when determining that the comfort air supply function of the air conditioner is turned on; when determining, based on the identification signal, that a human body exists within the preset air supply coverage range of the indoor unit, calculate the wind speed at the user's location based on the distance and the current rotation speed; and when the wind speed at the user's location is higher than a preset wind speed upper limit, control the fan to reduce its rotation speed. The identification signal includes the distance and relative angle between the human body and the air outlet.

[0006] On the other hand, a comfort control method for an air conditioner is provided. The air conditioner includes an outdoor unit, an indoor unit, and a human body detection device. The indoor unit includes an air outlet and a fan. The human body detection device is configured to detect the distance and relative angle between the human body and the air outlet. The method includes: when it is determined that the comfort air supply function of the air conditioner is turned on, obtaining an identification signal of the human body detection device and the current speed of the fan; when it is determined according to the identification signal that there is a human body within the preset air supply coverage range of the indoor unit, calculating the wind speed at the user's location according to the distance and the current speed; and when the wind speed at the user's location is higher than the preset wind speed upper limit, controlling the fan to reduce the speed. The identification signal includes the distance and the relative angle between the human body and the air outlet.

[0007] On the other hand, another air conditioner is provided. The air conditioner includes an outdoor unit, an indoor unit, a human body detection device and a controller. The indoor unit is connected to the outdoor unit. The indoor unit includes an air outlet, an air guide plate and a swing blade assembly. The air guide plate is configured to adjust the air supply angle of the indoor unit in the vertical direction. The swing blade assembly is configured to adjust the air supply angle of the indoor unit in the horizontal direction. The swing blade assembly and the air guide plate are arranged at the air outlet. The human body detection device is configured to identify the position of a human body. The controller is configured to: when it is determined that the comfort air supply function of the air conditioner is turned on, obtain an identification signal of the human body detection device; when it is determined that there is a human body within the preset air supply coverage range of the indoor unit according to the identification signal, determine the target air supply angle range corresponding to the swing blade assembly according to the identification signal, and obtain the target air supply angle range corresponding to the air guide plate; and control the air guide plate and the swing blade assembly to swing in a preset mode within their corresponding target air supply angle ranges. The identification signal includes the orientation of the human body; the target air supply angle range corresponding to the swing blade assembly and the target air supply angle range corresponding to the air guide plate respectively include an air supply direction avoiding the human body and an air supply direction intersecting the human body; in the preset mode, the air guide plate and the swing blade assembly stay in the air supply direction avoiding the human body for a longer time than the stay in the air supply direction intersecting the human body.

[0008] On the other hand, another comfort control method for an air conditioner is provided. The air conditioner includes an outdoor unit, an indoor unit and a human body detection device. The indoor unit includes an air outlet, an air guide plate for adjusting the air supply angle of the indoor unit in the vertical direction, and a swing blade assembly for adjusting the air supply angle of the indoor unit in the horizontal direction. The human body detection device is configured to identify the orientation of a human body. The method includes: when it is determined that the comfort air supply function of the air conditioner is turned on, obtaining an identification signal of the human body detection device; when it is determined according to the identification signal that there is a human body within the preset air supply coverage range of the indoor unit, determining the target air supply angle range corresponding to the swing blade assembly according to the identification signal, and obtaining the target air supply angle range corresponding to the air guide plate; and controlling the air guide plate and the swing blade assembly to swing in a preset mode within their corresponding target air supply angle ranges. The identification signal includes the orientation of the human body; the target air supply angle range corresponding to the swing blade assembly and the target air supply angle range corresponding to the air guide plate respectively include an air supply direction avoiding the human body and an air supply direction intersecting the human body; in the preset mode, the air guide plate and the swing blade assembly stay in the air supply direction avoiding the human body for a longer time than the stay in the air supply direction intersecting the human body. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] In order to more clearly illustrate the technical solutions in the present disclosure, the following briefly introduces the drawings required for use in some embodiments of the present disclosure.

[0010] FIG1 is a structural diagram of an air conditioner according to some embodiments;

[0011] FIG2 is a circuit diagram of an air conditioner according to some embodiments;

[0012] FIG3 is a cross-sectional view of an indoor unit of an air conditioner according to some embodiments;

[0013] FIG4 is a block diagram of an air conditioner according to some embodiments;

[0014] FIG5 is a flow chart of an execution method of a controller of an air conditioner according to some embodiments;

[0015] FIG6 is a flow chart of another execution method of a controller of an air conditioner according to some embodiments;

[0016] FIG7 is a flow chart of another execution method of a controller of an air conditioner according to some embodiments;

[0017] FIG8 is a flowchart of another execution method of a controller of an air conditioner according to some embodiments;

[0018] FIG9A is a flowchart of an execution method of a controller of another air conditioner according to some embodiments;

[0019] 9B is a flow chart of another method executed by a controller of another air conditioner according to some embodiments;

[0020] FIG10A is a diagram illustrating a standard effective temperature variation cycle at a user during operation of an air conditioner according to some embodiments;

[0021] FIG10B is a diagram illustrating a wind speed variation cycle at a user during operation of an air conditioner according to some embodiments;

[0022] FIG11 is a schematic diagram of a target air supply angle range of a blade assembly of an air conditioner when a user is in a first position according to some embodiments;

[0023] FIG12 is a schematic diagram of a target air supply angle range of a blade assembly of an air conditioner when a user is in a second position according to some embodiments;

[0024] FIG13 is a schematic diagram of a target air supply angle range of a blade assembly of an air conditioner when a user is in a third position according to some embodiments;

[0025] FIG14 is a schematic diagram of a target air supply angle range of a blade assembly of an air conditioner when a user is in a fourth position according to some embodiments;

[0026] FIG15 is a diagram illustrating an air flow direction of an indoor unit of an air conditioner when an air guide plate thereof is swung to a first longitudinal position according to some embodiments;

[0027] FIG16 is a diagram illustrating an air flow direction of an indoor unit of an air conditioner when a blade assembly thereof swings to a first transverse air supply direction according to some embodiments;

[0028] FIG17 is a diagram illustrating an air flow direction of an indoor unit of an air conditioner when the air guide plate is swung to a second longitudinal position according to some embodiments;

[0029] FIG18 is a diagram illustrating an air flow direction of an indoor unit of an air conditioner when the swing blade assembly swings to a second transverse air supply direction according to some embodiments;

[0030] FIG19 is a cross-sectional view of an air guide plate of an air conditioner when it is swung to different positions according to some embodiments;

[0031] FIG20 is a wind speed spectrum diagram of an air conditioner during operation according to some embodiments;

[0032] FIG21A is a schematic diagram of a target air supply angle range of another air conditioner according to some embodiments (the user is in the first air supply area);

[0033] FIG21B is a schematic diagram of another target air supply angle range of another air conditioner according to some embodiments (the user is in the second air supply area);

[0034] FIG21C is a schematic diagram of yet another target air supply angle range of another air conditioner according to some embodiments (the user is in the third air supply area);

[0035] FIG21D is a schematic diagram of yet another target air supply angle range of another air conditioner according to some embodiments (the user is in the third air supply area);

[0036] FIG21E is a schematic diagram of yet another target air supply angle range of another air conditioner according to some embodiments (the user is in the fourth air supply area);

[0037] FIG21F is a schematic diagram of yet another target air supply angle range of another air conditioner according to some embodiments (the user is in the fifth air supply area);

[0038] FIG22 is a diagram illustrating the air flow direction of an indoor unit of another air conditioner when the air guide plate is swung to a first longitudinal position according to some embodiments;

[0039] FIG23 is a diagram illustrating an air flow direction of an indoor unit of another air conditioner when the swing blade assembly swings to a first transverse air supply direction according to some embodiments;

[0040] FIG24 is a diagram illustrating the air flow direction of an indoor unit of another air conditioner when the air guide plate is swung to a second longitudinal position according to some embodiments;

[0041] FIG25 is a diagram showing the air flow direction of an indoor unit of another air conditioner when the swing blade assembly swings to a second transverse air supply direction according to some embodiments. DETAILED DESCRIPTION

[0042] The following will be combined with the accompanying drawings to clearly and completely describe the technical solutions in some embodiments of the present disclosure. Obviously, the embodiments described are only some embodiments of the present disclosure, not all embodiments. Based on the embodiments provided by the present disclosure, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of the present disclosure.

[0043] FIG1 is a block diagram of an air conditioner according to some embodiments. As shown in FIG1 , the air conditioner 1 according to some embodiments of the present disclosure includes an outdoor unit 2, an indoor unit 3, an interconnecting pipe 4, and a remote controller 5. The outdoor unit 2 and the indoor unit 3 are connected by an interconnecting pipe 4 to transmit refrigerant. The outdoor unit 2 is typically located outdoors and is configured to exchange heat with the indoor environment. Because the outdoor unit 2 is installed outdoors and is separated from the indoor unit 3 by a wall, the outdoor unit 2 and a portion of the interconnecting pipe 4 located outdoors are indicated by dashed lines in FIG1 .

[0044] Air conditioner 1 performs a refrigeration cycle using a compressor, condenser, expansion valve, and evaporator. This refrigeration cycle involves a series of processes, including compression, condensation, expansion, and evaporation, supplying refrigerant to the conditioned and heat-exchanged air. The air conditioner's refrigeration cycle relies on refrigerant, which releases heat when condensed and liquefied and absorbs heat when evaporated and vaporized, thereby achieving heat exchange and transfer.

[0045] The remote controller 5 is configured to respond to user operations and send instructions corresponding to the user operations to the air conditioner 1, thereby realizing interaction between the user and the air conditioner 1. The remote controller 5 communicates with the air conditioner 1 through, for example, infrared rays to send the user's operation instructions.

[0046] In some embodiments, as shown in FIG1 , the remote controller 5 includes a liquid crystal display device 51 and a plurality of buttons 52. The plurality of buttons 52 include an operation switch button, a temperature setting button, an air direction setting button, and an air volume setting button. A user performs related operations by using the operation switch button, the temperature setting button, the air direction setting button, and the air volume setting button.

[0047] For example, the operation switch is configured to control the air conditioner 1 to switch between operation and stop. That is, the user can press the operation switch button 52 to switch the air conditioner 1 between operation and stop. The temperature setting button is configured to adjust the desired cooling (or heating) temperature of the air conditioner 1. The wind direction setting button is configured to adjust the wind direction of the indoor unit 3. The air volume setting button is configured to adjust the air volume of the indoor unit 3.

[0048] FIG2 is a circuit diagram of an air conditioner according to some embodiments. As shown in FIG2 , in some embodiments, the outdoor unit 2 includes a compressor 11, a liquid accumulator 15, an outdoor heat exchanger 13, and an expansion valve 14. The indoor unit 3 includes an indoor heat exchanger 16. Alternatively, the outdoor unit 2 includes a compressor 11, a liquid accumulator 15, and an outdoor heat exchanger 13. The indoor unit 3 includes an expansion valve 14 and an indoor heat exchanger 16. In other words, the expansion valve 14 can be provided in either the outdoor unit 2 or the indoor unit 3. The compressor 11, the liquid accumulator 15, the outdoor heat exchanger 13, the expansion valve 14, and the indoor heat exchanger 16, which are connected in sequence, form a refrigerant circuit 10. The refrigerant circulates in the refrigerant circuit 10, exchanging heat with the air through the outdoor heat exchanger 13 and the indoor heat exchanger 16, respectively, to achieve the cooling mode or the heating mode of the air conditioner 1.

[0049] The compressor 11 is configured to compress the refrigerant so that the low-pressure refrigerant is compressed into a high-pressure refrigerant. The compressor 11 sucks the refrigerant from a suction port and discharges the refrigerant compressed therein to the indoor heat exchanger 16 from a discharge port.

[0050] The outdoor heat exchanger 13 is configured to exchange heat between outdoor air and the refrigerant transmitted through the outdoor heat exchanger 13. For example, in the cooling mode of the air conditioner 1, the outdoor heat exchanger 13 operates as a condenser, so that the refrigerant compressed by the compressor 11 dissipates heat to the outdoor air through the outdoor heat exchanger 13 and condenses. In the heating mode of the air conditioner 1, the outdoor heat exchanger 13 operates as an evaporator, so that the decompressed refrigerant absorbs heat from the outdoor air through the outdoor heat exchanger 13 and evaporates.

[0051] Outdoor heat exchanger 13 includes a first inlet and a second inlet. The first inlet communicates with liquid reservoir 15, and the second inlet communicates with expansion valve 14. A heat transfer tube is disposed between the first inlet and the second outlet. Refrigerant flows through the heat transfer tube, exchanging heat between the refrigerant in the heat transfer tube and the outdoor air.

[0052] The indoor heat exchanger 16 is configured to exchange heat between the indoor air and the refrigerant transmitted through the indoor heat exchanger 16. For example, in the cooling mode of the air conditioner 1, the indoor heat exchanger 16 operates as an evaporator, so that the refrigerant, after dissipating heat through the outdoor heat exchanger 13, absorbs heat from the indoor air through the indoor heat exchanger 16 and evaporates. In the heating mode of the air conditioner 1, the indoor heat exchanger 16 operates as a condenser, so that the refrigerant, after absorbing heat through the outdoor heat exchanger 13, dissipates heat to the indoor air through the indoor heat exchanger 16 and condenses.

[0053] Indoor heat exchanger 16 includes a first inlet and a second inlet. The first inlet communicates with the discharge port of compressor 11, and the second inlet communicates with expansion valve 14. A heat transfer pipe is provided between the first and second inlets. Refrigerant flows through the heat transfer pipe, exchanging heat with the indoor air.

[0054] The expansion valve 14 is connected between the outdoor heat exchanger 13 and the indoor heat exchanger 16. The opening of the expansion valve 14 regulates the pressure of the refrigerant flowing through the outdoor heat exchanger 13 and the indoor heat exchanger 16, thereby adjusting the refrigerant flow rate between the outdoor heat exchanger 13 and the indoor heat exchanger 16. For example, by reducing the opening of the expansion valve 14, the flow resistance of the refrigerant through the expansion valve 14 increases, thereby reducing the refrigerant flow rate between the outdoor heat exchanger 13 and the indoor heat exchanger 16. By increasing the opening of the expansion valve 14, the flow resistance of the refrigerant through the expansion valve 14 decreases, thereby increasing the refrigerant flow rate between the outdoor heat exchanger 13 and the indoor heat exchanger 16. For example, in heating mode, the refrigerant flowing from the indoor heat exchanger 16 to the outdoor heat exchanger 13 expands through the expansion valve 14, reducing its pressure.

[0055] The accumulator 15 is connected to the outdoor heat exchanger 13 and the suction port of the compressor 11. In the accumulator 15, the refrigerant flowing from the outdoor heat exchanger 13 to the compressor 11 is separated into gas refrigerant and liquid refrigerant. The accumulator 15 mainly supplies the gas refrigerant to the suction port of the compressor 11.

[0056] As shown in FIG2 , in some embodiments, the outdoor unit 2 further includes an outdoor fan 21 and an outdoor fan motor 21A. The outdoor fan motor 21A drives the outdoor fan 21 to rotate, and the speed of the outdoor fan motor 21A is variable. Driven by the outdoor fan motor 21A, the outdoor fan 21 rotates to force airflow through the outdoor heat exchanger 13, thereby accelerating heat exchange between the refrigerant in the heat transfer tube and the outdoor air.

[0057] FIG3 is a cross-sectional view of an indoor unit of an air conditioner according to some embodiments.

[0058] In some embodiments, as shown in Figures 2 and 3 , the indoor unit 3 further includes an indoor fan 31 and an indoor fan motor 31A. The indoor fan motor 31A drives the indoor fan 31, and the speed of the indoor fan motor 31A is variable. Driven by the indoor fan motor 31A, the indoor fan 31 rotates to pass air through the indoor heat exchanger 16, thereby accelerating heat exchange between the refrigerant in the heat transfer tubes and the indoor air.

[0059] In some embodiments, the indoor heat exchanger 16 is a fin-and-tube heat exchanger. For example, the indoor heat exchanger 16 includes a plurality of fins and a plurality of heat transfer tubes extending through the fins. Alternatively, the indoor heat exchanger 16 is a flat multi-hole tube heat exchanger. The presently disclosed embodiments do not limit the specific form of the indoor heat exchanger 16.

[0060] The air conditioner 1 provided in some embodiments of the present disclosure has a heat stress comfort function (i.e., a comfortable air supply function). When the heat stress comfort function is turned on, the air conditioner 1 will change or maintain the current air supply speed accordingly as the user's body temperature changes. Accordingly, the multiple buttons 52 also include a heat stress comfort function switch button. The heat stress comfort function switch button is configured to turn the heat stress comfort function on and off. The user can set the preset wind speed upper limit and the preset wind speed lower limit according to actual comfort requirements, so that the body temperature at the user's location is within an appropriate range.

[0061] Figure 4 is a block diagram of an air conditioner according to some embodiments. In some embodiments, as shown in Figures 3 and 4, the air conditioner 1 further includes a human body detection device 6 and a controller 7. The human body detection device 6 is configured to detect the distance and relative angle between a human body and the air outlet 72 of the indoor unit 3. For example, the human body detection device 6 is a radar sensor or an infrared thermal sensor.

[0062] The controller 7 is configured to control the operating frequency of the compressor 11, the opening of the expansion valve 14, the speed of the outdoor fan 21, the speed of the indoor fan 31, and to obtain an identification signal from the human detection device 6. The identification signal may include, for example, the distance and relative angle between the human body and the air outlet 72 of the indoor unit 3. The controller 7 is connected to the compressor 11, the expansion valve 14, the outdoor fan 21, the indoor fan 31, and the human detection device 6 via a data cable to transmit communication information.

[0063] The controller 7 includes a processor. The processor may include a central processing unit (CPU), a microprocessor (microprocessor), and an application specific integrated circuit (ASIC), and is configured to execute a program stored in a non-transitory computer-readable medium coupled to the controller 7.

[0064] FIG5 is a flowchart of an execution method of a controller of an air conditioner according to some embodiments.

[0065] In some embodiments, as shown in FIG5 , the controller 7 is configured to perform steps S11 to S16 .

[0066] In step S11 , it is determined whether the heat stress comfort function is turned on. If so, step S12 is executed; if not, step S11 is executed again.

[0067] In step S12, the recognition signal of the human body detection device 6 and the current rotation speed of the indoor fan 31 (ie, the fan) are obtained.

[0068] For example, when the controller 7 determines that the heat stress comfort function of the air conditioner 1 is turned on, the human body detection device 6 detects the distance and relative angle between the human body and the air outlet 72 of the indoor unit 3 in real time, and sends an identification signal representing the distance and the relative angle to the controller.

[0069] In step S13, based on the recognition signal, it is determined whether there is a human body within the preset air supply coverage area of ​​the indoor unit 3. If so, step S14 is executed.

[0070] For example, the preset air supply coverage of the indoor unit 3 is the range covered by the conditioned air blown by the indoor unit 3. That is, when the user is within the preset air supply coverage of the indoor unit 3, the indoor unit 3 can change the air supply direction through the air guide mechanism to blow directly towards the user, while when the user is not within the preset air supply coverage of the indoor unit 3, the air supplied by the indoor unit 3 cannot blow directly towards the user.

[0071] It should be noted that the preset air supply coverage range of the indoor unit 3 is also the preset air supply coverage range of the air guide mechanism. The preset air supply coverage range of the indoor unit 3 is determined according to the actual structure of the indoor unit 3 and is not limited here.

[0072] In step S14 , the wind speed at the user's location is calculated based on the distance between the human body and the indoor unit 3 and the current rotation speed of the indoor fan 31 .

[0073] In step S15, the magnitude relationship between the wind speed at the user's location and a preset wind speed upper limit is determined. If the wind speed at the user's location is higher than the preset wind speed upper limit, step S16 is executed.

[0074] In step S16, the indoor fan 31 is controlled to reduce its rotation speed.

[0075] For example, the controller 7 controls the indoor fan 31 to reduce the rotation speed so that the wind speed at the user's location is less than the preset wind speed upper limit and greater than the preset wind speed lower limit.

[0076] It should be noted that when the wind speed at the user's location is greater than or equal to 0.3m / s, the user can feel the presence of the wind. When the wind speed at the user's location is greater than 1m / s, the standard effective temperature perceived by the user will decrease, which may make the user feel uncomfortable. For example, when the wind temperature is 27°C, the standard effective temperature corresponding to a wind speed of 1.0m / s is about 3.5°C lower than the standard effective temperature corresponding to a wind speed of 0.1m / s. In some embodiments, the preset wind speed upper limit value is any value between 0.6m / s and 1.0m / s. For example, the preset wind speed upper limit value is 0.6m / s, 0.8m / s, 0.9m / s or 1.0m / s.

[0077] It is understandable that when the temperature of the air supplied by the indoor unit 3 remains constant, the higher the wind speed, the lower the standard effective temperature perceived by the human body. This is because the human body's actual perception of the air is affected by both wind temperature and wind speed. Therefore, when a user uses the air conditioner 1 for an extended period of time, by controlling the indoor fan 31 to reduce its speed so that the wind speed at the user's location is less than the preset upper wind speed limit and greater than the preset lower wind speed limit, the user's physiological ability to regulate cold and heat stimuli is effectively prevented from being weakened, thereby improving the user's user experience and protecting the user's health.

[0078] FIG6 is a flow chart of another method executed by a controller of an air conditioner according to some embodiments.

[0079] In some embodiments, as shown in FIG. 6 , after step S14 , the controller 7 is configured to execute step S15 ′ and steps S16 to S18 .

[0080] In step S15', the relationship between the wind speed at the user's location and the preset wind speed upper limit and the preset wind speed lower limit is determined. If the wind speed at the user's location is higher than the preset wind speed upper limit, step S16 is executed; if the wind speed at the user's location is lower than the preset wind speed lower limit, step S17 is executed; if the wind speed at the user's location is between the preset wind speed lower limit and the preset wind speed upper limit, step S18 is executed.

[0081] In step S16, the indoor fan 31 is controlled to reduce its rotation speed.

[0082] In step S17, the indoor fan 31 is controlled to increase its rotation speed.

[0083] For example, the controller 7 controls the indoor fan 31 to increase the rotation speed so that the wind speed at the user's location is less than the preset wind speed upper limit and greater than the preset wind speed lower limit.

[0084] It should be noted that when the wind speed is too low, the user feels a slight breeze and cannot clearly feel the temperature change. Therefore, if the wind speed is too low, the indoor fan 31 is controlled to increase its speed to avoid the body temperature being too low due to the low wind speed, thereby effectively improving comfort.

[0085] The preset lower wind speed limit can be set based on actual comfort requirements and is not limited here. For example, the preset lower wind speed limit can be any value between 0.3 and 0.5 m / s. For example, the preset lower wind speed limit can be 0.3 m / s, 0.4 m / s, or 0.5 m / s.

[0086] In step S18, the indoor fan 31 is controlled to maintain the current rotation speed.

[0087] It can be understood that if the wind speed at the user's location is between the preset lower limit of the wind speed and the preset upper limit of the wind speed, the surface wind speed is moderate. In this case, the speed of the indoor fan 31 is controlled to remain unchanged, so that the perceived temperature felt by the human body is maintained at an appropriate level, which can effectively improve the user's comfort.

[0088] In some embodiments, the wind speed Vρ at the user's location is calculated as follows: Vρ=(K1*R+K2)*(1-(ρ / (K3*R+K4))) (1)

[0089] Wherein, Vρ is the wind speed at the user's location, R is the current rotation speed of the indoor fan 31, ρ is the distance between the human body and the indoor unit 3, K1 and K3 are rotation speed coefficients, and K2 and K4 are constants.

[0090] According to the empirical formula and its inverse function, the calculation formula for the wind temperature Tρ at the user's location is: Tρ=K5*Te+ρ / (K3*R+K4)*(Ta-K5*Te) (2)

[0091] Where Tρ is the air temperature at the user's location, Te is the coil temperature of the indoor heat exchanger 16, Ta is the return air temperature, and K5 is the temperature coefficient. K1 to K5 are all empirical parameters that can be obtained through data testing and fitting of air conditioner 1 during implementation.

[0092] For example, when the constants K1 = 0.0017 m / (rpm*s), K2 = 0.58 m / s, K3 = 0.0033 m / rpm, K4 = 1.3 m, and K5 = 1.2, and the current rotational speed R of the indoor fan 31 is in rpm, and the coil temperature Te of the indoor heat exchanger 16 is in °C, the above parameters are substituted into Formula 1 to calculate the wind temperature and wind speed at the user's location at different rotational speeds of the indoor fan 31, as shown in Table 1 below.

[0093] Table 1 Wind speed and wind temperature at different indoor fan speeds

[0094] It can be understood that when the wind speed at the user's location is too low, the speed of the indoor fan 31 needs to be increased to reduce the wind temperature at the user's location; when the wind speed at the user's location is too high, the speed of the indoor fan 31 needs to be reduced to increase the wind temperature at the user's location.

[0095] For example, when the wind speed at the user's location is less than 0.3 m / s, the user can barely feel the wind or the wind is very light. Therefore, the speed of the indoor fan 31 needs to be increased to increase the wind speed. When the wind speed at the user's location is greater than 1.0 m / s, the user feels the wind more strongly, and the speed of the indoor fan 31 needs to be reduced to reduce the wind speed. When the wind speed at the user's location is greater than or equal to 0.3 m / s and less than or equal to 1.0 m / s, the user can feel the wind and the wind sensation is relatively comfortable. The speed of the indoor fan 31 only needs to remain unchanged at the current speed.

[0096] For example, in order to ensure that the wind temperature at the user's location is appropriate, the target speed of the indoor fan 31 that needs to be adjusted can be calculated by taking Vρ=(0.3+1.0) / 2=0.65m / s through the inverse function R=(Vρ,ρ) of Formula 1.

[0097] It is understandable that when a person is in an environment with a standard effective temperature, he or she will feel more comfortable. However, when a person is in an environment with a standard effective temperature and there is continuous wind blowing on the person, even if the wind temperature is also at the standard effective temperature, the person will feel slightly cool or uncomfortable.

[0098] Therefore, in order to ensure that the human body remains comfortable while being blown by the air supplied by the indoor unit 3, it is necessary to set a preset increment based on the standard effective temperature. The standard effective temperature and the preset increment are added together to form the correction temperature. For example, if the ambient temperature that the user feels comfortable is 26°C, then raising the ambient temperature to 27.5°C (i.e., a preset increment of 1.5°C) and continuing to supply air to the user will help improve user comfort and enhance the user experience.

[0099] The preset increment can be set according to actual needs, and the present disclosure does not limit this. For example, the preset increment is any value between 0.1°C and 6°C, for example, the preset increment is 0.1°C, 0.5°C, 1.0°C, etc.

[0100] It should be noted that the standard effective temperature SET is defined as: a person wearing standard clothing (thermal resistance 0.6Clo) with a metabolic rate of 1 met (equivalent to a sitting position) is in an environment with a relative humidity of 50%, approximately still air, a wind speed of approximately 0.1m / s, and an air temperature equal to the mean radiant temperature. If the average skin temperature and skin humidity at this time are the same as those in a certain actual environment and actual clothing thermal resistance conditions, then the human body will have the same heat dissipation in the standard environment and the actual environment. At this time, the air temperature of the standard environment is the standard effective temperature of the actual environment.

[0101] The standard effective temperature SET is determined by four environmental factors (air temperature, relative humidity, air velocity and mean radiant temperature) and two human factors (human metabolic rate and clothing thermal resistance). The calculation formula of the standard effective temperature SET is: SET = f(Tb, Va, Rh, Tr, M, Clo) (3)

[0102] Where SET is the standard effective temperature, Tb is the air temperature, Va is the air velocity, Rh is the relative humidity, Tr is the mean radiation temperature, M is the human metabolic rate, and Clo is the thermal resistance of clothing.

[0103] If the average radiation temperature is equal to the air temperature detected by the air conditioner 1, the relative humidity is the humidity detected by the air conditioner 1, for example, 50%; the thermal resistance of summer clothing is 0.6Clo, and the metabolic rate is 1.0M. The calculation formula of the standard effective temperature can be simplified to: SET=f(Tb,Va) (4)

[0104] The computer calculates and solves formula (3) in advance to obtain a relationship table between the standard effective temperature and the air temperature, and stores the table in the controller 7. The controller 7 obtains the air temperature corresponding to a certain standard effective temperature by calling the table.

[0105] FIG7 is a flow chart of another execution method of a controller of an air conditioner according to some embodiments. In some embodiments, as shown in FIG7 , the controller 7 is further configured to, when the controller 7 determines, based on the identification signal, that a human body is present within the preset air supply coverage area of ​​the indoor unit 3, simultaneously execute steps S14 and S19.

[0106] In step S19, the preset standard effective temperature is corrected according to the preset increment to obtain a corrected temperature, and the air temperature of the air conditioner 1 is adjusted according to the preset human metabolic rate, clothing thermal resistance, relative humidity, mean radiant temperature and the corrected temperature.

[0107] It is understood that the controller 7 adjusts the temperature of the air blown out of the air conditioner 1 according to the corrected temperature obtained by correcting the standard effective temperature, thereby ensuring user comfort while also reducing the energy consumption of the air conditioner 1. For example, when the air conditioner 1 is in cooling mode, every 1°C increase in the corrected temperature can save approximately 10% of energy, and every 1.5°C increase in the corrected temperature can save approximately 15% of energy.

[0108] In some embodiments, as shown in Figures 3 and 4, the indoor unit 3 further includes a housing 61, an air filter, and an air guide mechanism. The air filter is disposed on the top of the housing 61. The air guide mechanism includes an air guide plate 64 and a swing blade assembly 63. The air guide plate 64 is configured to adjust the air supply angle of the indoor unit 3 in the vertical direction (i.e., the up and down direction shown in Figure 1). The swing blade assembly 63 is configured to adjust the air supply angle of the indoor unit 3 in the horizontal direction (i.e., the left and right direction shown in Figure 1).

[0109] The housing 61 includes a plurality of openings. These openings extend along the length of the indoor unit 3 (i.e., the left-right direction as shown in FIG1 ) and are spaced apart along the height of the indoor unit 3 (i.e., the up-down direction as shown in FIG1 ). These openings include an air intake and an air outlet 72.

[0110] The suction port is located at the top of the housing 61. The rotation of the indoor fan 31 drives the indoor air near the suction port through the suction port into the air filter inside the housing 61. After being filtered by the air filter, the air enters the indoor heat exchanger 16, exchanges heat with the refrigerant in the indoor heat exchanger 16, and is then transported to the indoor fan 31.

[0111] The air outlet 72 is located at the bottom of the housing 61. The air outlet 72 is connected to the interior of the housing 61 through a vortex flow path 72B located on the periphery of the indoor fan 31. The indoor air sucked in from the suction port is subjected to heat exchange by the indoor heat exchanger 16 and then blown out from the air outlet 72 into the room through the vortex flow path 72B. The vortex flow path 72B includes a flow path lower surface 72A. The flow path lower surface 72A is provided on one side of the indoor fan 31 and extends along the circumference of the indoor fan 31. For example, as shown in Figure 3, the flow path lower surface 72A is approximately located on the rear side of the indoor fan 31, and the distance between the flow path lower surface 72A and the indoor fan 31 increases in the clockwise direction of the indoor fan 31.

[0112] As shown in Figure 3, the indoor fan 31 is located approximately in the middle of the housing 61. The indoor fan 31 extends along the length of the indoor unit 3 and has a cylindrical shape. The indoor fan 31 rotates within the housing 61, drawing indoor air in through the air inlet, passing through the air filter and indoor heat exchanger 16, and then blowing it out through the air outlet 72 into the room.

[0113] In some embodiments, the indoor fan motor 31A is disposed in the housing 61 and is connected to the indoor fan 31. The indoor fan motor 31A is configured to drive the indoor fan 31 to rotate. For example, the rotational speed of the indoor fan 31 is determined by the rotational speed of the indoor fan motor 31A. A greater rotational speed of the indoor fan 31 results in a greater rotational speed of the indoor fan 31, thereby increasing the amount of air blown out of the air outlet 72. In other words, the speed of the air discharged from the air outlet 72 increases.

[0114] The air deflector 64 is disposed within the air outlet 72 and extends along the length of the indoor unit. The air deflector 64 is rotatably connected to the housing 61. The indoor unit 3 also includes an air deflector drive motor, which is configured to drive the air deflector 64 to rotate about a fixed axis, thereby causing the air outlet 72 to swing upward and downward. The controller 7 is further configured to control the air deflector drive motor.

[0115] The swing blade assembly 63 is arranged inside the housing 61 and near the air outlet 72. The swing blade assembly 63 includes a plurality of vertical baffles, which are connected by connectors or are independent of each other. The indoor unit 3 also includes a swing blade assembly drive motor. The swing blade assembly drive motor is configured to drive the plurality of baffles to rotate synchronously around a plurality of vertically extending axes. This causes the direction of air outlet 72 to swing left and right. The swing blade assembly 63 swings within the target air supply angle range. The controller 7 is also configured to drive the swing blade assembly drive motor.

[0116] Normally, if a human body stays in a constant temperature environment for a long time, its heat stress resistance will decrease. Therefore, by using the air conditioner 1 to adjust the ambient temperature to vary within a certain range, the body's heat regulation system can be exercised, which is beneficial to promoting the user's health.

[0117] It is understandable that by periodically blowing air toward the user through the air outlet 72 of the indoor unit 3, the ambient temperature at the user's location can be varied within a certain range, and prolonged direct blowing can be avoided. In other words, the controller 7 controls the air guide 64 and the swing blade assembly 63 to swing within their corresponding target air supply angle ranges, and the dwell time at the air supply angle that does not directly blow the human body is greater than the dwell time at the air supply angle that directly blows the human body, so that the air blown out from the air outlet 72 of the indoor unit 3 periodically blows toward the user, enabling the user to periodically feel wind and no wind, thereby preventing the user from losing the physiological regulation ability to cold and hot stimuli due to prolonged exposure to wind or no wind.

[0118] FIG8 is a flowchart of another method executed by a controller of an air conditioner according to some embodiments.

[0119] In some embodiments, as shown in FIG8 , when the controller 7 determines that there is a human body within the preset air supply coverage range of the indoor unit 3 based on the identification signal, the controller 7 is also configured to synchronously execute step S14, step S19, and step S20A, and after executing step S20A, execute step S20B.

[0120] In step S20A, the target air supply angle range corresponding to the swing blade assembly 63 is determined according to the recognition signal of the human body detection device 6, and the target air supply angle range corresponding to the air guide plate 64 is obtained.

[0121] For example, the target air supply angle range corresponding to the swing blade assembly 63 is determined based on the recognition signal of the human body detection device 6. The target air supply angle range corresponding to the swing blade assembly 63 includes an air supply direction that avoids the human body (i.e., does not directly blow on the human body) and an air supply direction that intersects the human body (i.e., directly blows on the human body).

[0122] For example, the target air supply angle range corresponding to the air guide plate 64 is determined based on the recognition signal of the human body detection device 6, or the angle of the air guide plate 64 to achieve the ceiling airflow (that is, the angle position at which there is no wind in the range of 1.7m to 2.0m from the ground) can be obtained in advance through testing, and then the target air supply angle range corresponding to the air guide plate 64 is determined based on the angle and the maximum angle or larger position to which the air guide plate 64 can normally rotate, so as to achieve the up and down swinging air conditioning supply that blows periodically onto the user.

[0123] In step S20B, the air guide plate 64 and the swing blade assembly 63 are controlled to swing in a preset mode within their corresponding target air supply angle ranges.

[0124] For example, in the preset mode, the air guide plate 64 and the swing blade assembly 63 stay in the air supply direction avoiding the human body for a longer time than the air supply direction intersecting the human body.

[0125] In some embodiments, the controller 7 can also independently control the air guide mechanism so that the air guide plate 64 and the swing blade assembly 63 swing in a preset mode within their corresponding target air supply angle ranges.

[0126] As shown in FIG. 9A , the controller 7 is further configured to execute steps S21 to S25 .

[0127] In step S21 , it is determined whether the heat stress comfort function is turned on. If so, step S22 is executed.

[0128] In step S22 , the recognition signal of the human body detection device 6 is acquired.

[0129] In step S23, based on the recognition signal of the human body detection device 6, it is determined whether there is a human body within the preset air supply coverage range of the indoor unit 3. If so, step S24 is executed.

[0130] For example, the human body detection device 6 is configured to identify the human body position, and the identification signal includes the human body position information.

[0131] In step S24 , the target air supply angle range corresponding to the swing blade assembly 63 is determined according to the identification signal, and the target air supply angle range corresponding to the air guide plate 64 is obtained.

[0132] In step S25 , the air guide plate 64 and the swing blade assembly 63 are controlled to swing in a preset mode within their corresponding target air supply angle ranges.

[0133] In some embodiments, as shown in FIG9B , when the controller 7 determines that a human body exists within the preset air supply coverage range of the indoor unit 3 based on the recognition signal of the human body detection device 6 , the controller 7 is further configured to simultaneously execute step S24 and step S26 .

[0134] In step S26, the preset standard effective temperature is corrected according to the preset increment to obtain a corrected temperature, and the target operating parameters of the air conditioner 1 are adjusted according to the preset human metabolic rate, clothing thermal resistance, relative humidity, mean radiant temperature and the corrected temperature.

[0135] FIG10A is a diagram illustrating a standard effective temperature variation cycle at a user during operation of an air conditioner according to some embodiments, and FIG10B is a diagram illustrating a wind speed variation cycle at a user during operation of an air conditioner according to some embodiments.

[0136] In some embodiments, as shown in Figures 10A and 10B, the swinging of the air guide plate 64 and the swing blade assembly 63 from the initial position to the target position and then back to the initial position is a swing cycle T0. During a swing cycle T0, the angle of the air supply from the indoor unit 3 changes as the air guide plate 64 and the swing blade assembly 63 swing. The time for the air supply from the indoor unit 3 to intersect with the human body is the first preset time T1, and the time for it to avoid the human body is the second preset time T2. During the first preset time T1, the user feels wind and a cool feeling, while during the second preset time T2, the user feels no wind or a relatively light wind feeling (such as a wind speed of less than 0.2m / s) and feels slightly hot. For example, the first preset time T1 is less than the second preset time T2.

[0137] FIG11 is a schematic diagram of a target air supply angle range of a blade assembly of an air conditioner when a user is in a first position according to some embodiments.

[0138] In some embodiments, as shown in FIG11 , the preset air supply coverage range of the swing blade assembly 63 (i.e., the preset air supply coverage range of the indoor unit 3 in the horizontal direction) is the area (e.g., a fan-shaped area) enclosed by the first extreme air supply direction D1 of the swing blade assembly 63 and the second extreme air supply direction D2 of the swing blade assembly 63. The center line of the preset air supply coverage range is the center line P (i.e., the center line), and the angle between the line connecting the user and the swing blade assembly 63 and the center line P is the relative angle β. For example, the first air supply angle θmin is defined as the angle between the first extreme air supply direction D1 and the center line P, and the first air supply angle θmin is in the clockwise direction of the center line P. The second air supply angle θmax is defined as the angle between the second extreme air supply direction D2 and the center line P, and the second air supply angle θmax is in the counterclockwise direction of the center line of the preset air supply coverage range.

[0139] The target air supply angle range corresponding to the swing blade assembly 63 is the area (e.g., a fan-shaped area) enclosed by the first transverse air supply direction D3 and the second transverse air supply direction D4. When the swing blade assembly 63 swings to the first transverse air supply direction D3, the air supplied by the indoor unit 3 blows directly onto the human body. When the swing blade assembly 63 swings to the second transverse air supply direction D4, the air supplied by the indoor unit 3 is away from the human body.

[0140] It can be understood that the area enclosed by the first lateral air supply direction D3 and the second lateral air supply direction D4 is located in the area enclosed by the first extreme air supply direction D1 and the second extreme air supply direction D2, that is, the target air supply angle range corresponding to the swing blade assembly 63 is located in the preset air supply coverage range of the swing blade assembly 63.

[0141] The angle between the first transverse air supply direction D3 and the center line P is a first transverse angle H1, and the angle between the second transverse air supply direction D4 and the center line P is a second transverse angle H2.

[0142] The first lateral air supply direction D3 is the initial air supply direction during one swing cycle of the swing blade assembly 63, and the second lateral air supply direction D4 is the target air supply direction during one swing cycle of the swing blade assembly 63. That is, when the swing blade assembly 63 swings to the initial position, the angle between the lateral air supply direction of the indoor unit 3 and the centerline P is the first lateral angle H1. When the swing blade assembly 63 swings to the target position, the angle between the lateral air supply direction of the indoor unit 3 and the centerline P is the second lateral angle H2.

[0143] In some embodiments, when the heat stress comfort function of the air conditioner 1 is turned on and there is a human body within the preset air supply coverage range of the indoor unit 3, it is necessary to determine the target air supply angle range corresponding to the swing blade assembly 63.

[0144] As shown in Figure 11, when the user is in the first position indoors, that is, the user is in the clockwise direction of the center line P (that is, on the right side of the center line P), it is determined that the first lateral angle H1 is approximately equal to the relative angle β, the sum of the absolute value of the second lateral angle H2 and the absolute value of the first lateral angle H1 is approximately equal to half of the sum of the absolute value of the first air supply angle θmin and the absolute value of the second air supply angle θmax, and the second lateral angle H2 is in the counterclockwise direction of the center line P (that is, on the left side of the center line P).

[0145] FIG12 is a schematic diagram of a target air supply angle range of a blade assembly of an air conditioner when a user is in a second position according to some embodiments.

[0146] As shown in Figure 12, when the user is in the second position, that is, the user is in the counterclockwise direction of the center line P (that is, on the left side of the center line P), the first lateral angle H1 is determined to be equal to the relative angle β, the sum of the absolute value of the second lateral angle H2 and the absolute value of the first lateral angle H1 is approximately equal to half of the sum of the absolute value of the first air supply angle θmin and the absolute value of the second air supply angle θmax, and the second lateral angle H2 is in the clockwise direction of the center line (that is, on the right side of the center line P).

[0147] Combined with the preset air supply coverage range and relative angle β of the swing blade assembly 63, the target air supply angle range corresponding to the swing blade assembly 63 can be determined, which is conducive to improving the accuracy of air supply control in the left and right directions of the indoor unit 3.

[0148] It is understandable that when the user is at different positions within the preset air supply coverage range of the swing blade assembly 63, the relative angle β between the user and the indoor unit 3 is different, and the first lateral angle H1 corresponding to the swing blade assembly 63 is also different.

[0149] If the indoor unit 3 is used as the center of the circle and the center line P (i.e., directly in front of the indoor unit 3) is used as the 0° reference, the first air supply angle θmin is less than 0°, and the second air supply angle θmax is greater than 0°. The preset air supply coverage range of the swing blade assembly 63 is smaller than the detection area of ​​the detection device 6 and is located within the detection area of ​​the detection device 6.

[0150] For example, the angle between the first limit detection direction D5 of the detection device 6 and the center line P is δmax (e.g., δmax>θmax>0°), and the angle between the second limit detection direction D6 of the detection device 6 and the center line P is δmin (e.g., δmin<θmin<0°). The detection area of ​​the detection device 6 is the area (e.g., a fan-shaped area) defined by the first limit detection direction D5 and the second limit detection direction D6. Half of the sum of the absolute value of the first air supply angle θmin and the absolute value of the second air supply angle θmax is θ1.

[0151] Referring to Figure 11, when the user is on the right side of the center line P (i.e., on the clockwise side), when the pendulum assembly 63 swings to the initial position, the lateral air supply direction of the indoor unit 3 is located in the clockwise direction of the center line P (i.e., θmin≤β<0°), and when the pendulum assembly 63 swings to the target position, the lateral air supply direction of the indoor unit 3 is located in the counterclockwise direction of the center line P. Then, the process of the pendulum assembly 63 rotating counterclockwise by θ1 from the initial position to reach the target position, and then rotating clockwise by θ1 from the target position to return to the initial position is one swing cycle of the pendulum assembly 63.

[0152] Referring to Figure 12, when the user is on the left side of the center line P (i.e., on the counterclockwise side), when the swing blade assembly 63 swings to the initial position, the lateral air supply direction of the indoor unit 3 is located in the counterclockwise direction of the center line P (i.e., θmax≥β>0°), and when the swing blade assembly 63 swings to the target position, the lateral air supply direction of the indoor unit 3 is located in the clockwise direction of the center line P. Then, the process of the swing blade assembly 63 rotating clockwise by θ1 from the initial position to reach the target position, and then rotating counterclockwise by θ1 from the target position to return to the initial position is one swing cycle of the swing blade assembly 63.

[0153] Figure 13 is a schematic diagram illustrating a target air supply angle range of a blade assembly of an air conditioner when a user is in the third position according to some embodiments. Figure 14 is a schematic diagram illustrating a target air supply angle range of a blade assembly of an air conditioner when a user is in the fourth position according to some embodiments.

[0154] 13 and 14 , when the user is in the third and fourth positions, i.e., when the user is within the detection area of ​​the detection device 6 and outside the target air supply angle range corresponding to the swing blade assembly 63, the first lateral angle H1 is equal to the first air supply angle θmin and the second lateral angle H2 is 0°, limited by the swing limit of the swing blade assembly 63. Alternatively, the first lateral angle H1 is equal to the second air supply angle θmax and the first lateral angle H1 is 0°. In some embodiments, the absolute value of the first air supply angle θmin is equal to the second air supply angle θmax, i.e., -θmin = θ1 = θmax.

[0155] Figure 19 is a cross-sectional view of an air deflector of an air conditioner according to some embodiments when it is swung to different angles. As shown in Figure 19, the air deflector 64 can be rotated to a first longitudinal position L1, a second longitudinal position L2, and a longitudinal limit position L3. When the air deflector 64 is rotated to the first longitudinal position L1, the first longitudinal air supply direction Z1 of the air deflector 64 intersects with the human body. When the air deflector 64 is rotated to the second longitudinal position L2, the second longitudinal air supply direction Z2 of the air deflector 64 avoids the human body. The longitudinal limit position L3 is the limit position at which the air deflector 64 can rotate downward. The target air supply angle range corresponding to the air deflector 64 is the angle α between the first longitudinal position L1 and the second longitudinal position L2 (e.g., α is greater than or equal to 0°). The angle between the first longitudinal position L1 and the longitudinal limit position L3 is the first longitudinal angle, and the angle between the second longitudinal position L2 and the longitudinal limit position L3 is the second longitudinal angle.

[0156] In some embodiments, step S20B (or step S25) includes: controlling the air guide plate 64 to stay in the first longitudinal position L1 for the first preset time T1, then swing to the second longitudinal position L2 and swing back from the second longitudinal position L2 to the first longitudinal position L1 for the second preset time T2; synchronously controlling the swing blade assembly 63 to stay in the first lateral air supply direction D3 for the first preset time T1, then swing to the second lateral air supply direction D4 and then swing back to the first lateral air supply direction D3 for the second preset time T2.

[0157] Figure 15 is an air supply flow diagram of the indoor unit when the air guide plate of an air conditioner swings to the first longitudinal position according to some embodiments, and Figure 16 is an air supply flow diagram of the indoor unit when the swing blade assembly of an air conditioner swings to the first transverse air supply direction D3 according to some embodiments.

[0158] As shown in Figures 15 and 16 , the first longitudinal position serves as the starting position of the air guide plate 64, and the first transverse air supply direction D3 serves as the starting air supply direction for the swing blade assembly 63 to swing. The controller 7 controls the air guide plate 64 to rotate to the first longitudinal position and remain there for a first preset time T1, and simultaneously controls the swing blade assembly 63 to rotate to the first transverse air supply direction D3 and remain there for a first preset time T1.

[0159] Figure 17 is an air supply flow diagram of the indoor unit when the air guide plate of an air conditioner swings to the second longitudinal position according to some embodiments, and Figure 18 is an air supply flow diagram of the indoor unit when the swing blade assembly of an air conditioner swings to the second transverse air supply direction D4 according to some embodiments.

[0160] As shown in Figures 17 and 18, when the air guide plate 64 stays at the first longitudinal position L1 for the first preset time T1, the air guide plate 64 rotates clockwise from the first longitudinal position L1 to the second longitudinal position at the first angular velocity, and then rotates counterclockwise to the first longitudinal position at the first angular velocity, reaching the second preset time T2.

[0161] Synchronized with the wind guide plate 64, when the pendulum blade assembly 63 stays at the first lateral angle H1 for the first preset time T1, the pendulum blade assembly 63 rotates counterclockwise or clockwise from the first lateral angle H1 to the second lateral angle H2 at the second angular velocity, and then rotates clockwise or counterclockwise back to the first lateral angle H1 at the second angular velocity, reaching the second preset time T2.

[0162] In some embodiments, when the human body detection device 6 detects that the position of the human body has changed, when a swing cycle T0 ends (i.e., when the air guide plate 64 rotates counterclockwise to the first longitudinal position L1 at a first angular velocity, or when the swing blade assembly 63 rotates clockwise or counterclockwise at a second angular velocity back to the first lateral angle H1), the controller 7 re-determines the first longitudinal position, second longitudinal position L2 and first angular velocity of the air guide plate 64, the first lateral angle H1, second lateral angle H2 and second angular velocity of the swing blade assembly 63, and the speed of the indoor fan 31 based on the distance and relative angle between the user and the air outlet 72 and the current speed of the indoor fan 31.

[0163] In some embodiments, when the human body detection device 6 cannot detect a user (i.e., the user is outside the detection range of the human body detection device 6), the controller 7 is also configured to control the air conditioner 1 to adjust the indoor air temperature to a preset standard effective temperature, and control the swing angle of the air guide plate 64, the swing angle of the swing blade assembly 63 and the speed of the indoor fan 31 to remain unchanged.

[0164] Figure 20 shows the measured wind speed spectrum when the wind deflector 64 and the swing blade assembly 63 follow a preset combined action sequence, simulating the chaotic wind speeds of natural wind. It is understood that the swing period T0, the first preset time T1, and the second preset time T2 can be set according to actual needs and are not limited here. In some embodiments, the ratio of the swing period T0 to the first preset time T1 ranges from 2 to 20. For example, the ratio of the swing period T0 to the first preset time T1 can be 2, 5, 8, etc.

[0165] It should be noted that the air guide plate 64 and the swing blade assembly 63 can have a variety of action combination timings and action cycles. The airflow formed can be simulated natural wind, mechanical wind, etc. according to the frequency spectrum. The airflow corresponding to the starting angle can also be no wind or a breeze. This is not limited by this disclosure. However, regardless of the action cycle, airflow, and starting point of the air guide plate 64 and the swing blade assembly 63, as long as the airflow formed periodically causes the user to feel wind and no wind, combined with the slightly warm ambient temperature, the heat stress comfort function can be achieved, and all of these are within the scope of protection of this disclosure.

[0166] In some embodiments, the air conditioner 1 includes a floor-standing indoor unit 3, the air guide mechanism includes an air guide plate 64 and a swing blade assembly 63, and the controller 7 is configured to control the action timing of the air guide plate 64 and the swing blade assembly 63, thereby realizing the heat stress comfort function.

[0167] The setting parameters of the air conditioner 1 include: SET = 26°C, Δt = 1.5°C, T0 = 60s, T1 = 6s, T2 = 54s, K1 = 0.0017m / (rpm*s), K2 = 0.58m / s, K3 = 0.0033m / rpm, K4 = 1.3m, θmax = 60°, θmin = -60°, δmax = 75°, δmin = -75°, R = 900rpm. The first longitudinal angle of the air deflector 64 is 24°, the second longitudinal angle is 90°, and the angle between the first longitudinal position L1 and the second longitudinal position L2 of the air deflector 64 is 64°. The preset lower wind speed limit is 0.3m / s, and the preset upper wind speed limit is 1.0m / s.

[0168] The first angular velocity ω1 is equal to the ratio of twice the angle α between the first longitudinal position L1 and the second longitudinal position L2 to the first preset time T1; the first angular velocity ω1 satisfies the following formula: ω1=2α / T1 (5)

[0169] The second angular velocity ω2 is equal to the ratio of twice the angle between the first lateral air supply direction D3 and the second lateral air supply direction D4 (i.e., θ1) and the first preset time T1. The second angular velocity ω2 satisfies the following formula: ω2=2θ1 / T1 (6)

[0170] When the user turns on the heat stress comfort function, if the human body detection device 6 detects that the information corresponding to the human body's location includes the distance ρ = 2.0 m between the user and the indoor unit 3, and the relative angle β between the user and the indoor unit 3 = -15°, the controller 7 is configured to execute steps S101 to S103.

[0171] In step S101, the corrected standard effective temperature (ie, Δt+SET) is calculated by using the preset increment Δt and the standard effective temperature SET, and the air temperature is adjusted to 27.5°C (26°C+1.5°C).

[0172] In step S102, the air guide plate 64 is controlled to rotate to the first longitudinal angle (24°) and stay for 6s (i.e., the first preset time T1). Synchronously, the swing blade assembly 63 is controlled to rotate to the first lateral angle H1 (-15°) and stay for 6s (i.e., the first preset time T1).

[0173] In step S103, the air guide plate 64 is controlled to rotate clockwise to the second longitudinal angle (90°) at an angular velocity of 2α / T2=2*(90°-24°) / 6=22° / s, and then rotated counterclockwise back to the first longitudinal angle (24°) at an angular velocity of 22° / s. Synchronously, the swing blade assembly 63 is controlled to rotate counterclockwise to the second lateral angle H2 (45°) at an angular velocity of 2θ1 / T2=2*60 / 6=20° / s, and then rotated clockwise back to the first lateral angle H1 (-15°). This process takes 54s (i.e., the second preset time T2); and the speed of the indoor fan 31 is controlled to be reduced to 830rpm.

[0174] It is understandable that when the user's location does not change, if the controller 7 calculates that the wind speed at the user's current location is 1.0 m / s∈[0.3 m / s, 1.0 m / s], the speed of the indoor fan 31 is controlled to remain unchanged.

[0175] When the user's location changes, for example, if the human detection device 6 detects that the distance between the human body and the indoor unit 3 is 3.0 m, and the angle between the user and the centerline of the preset air supply coverage area of ​​the swing blade assembly 63 is 20°, then the angle between the first longitudinal position of the air guide plate 64 and any horizontal plane is 90°, and the first lateral angle H1 of the swing blade assembly 63 is 20°. In this case, if the controller 7 calculates the wind speed at the user's current location to be 0.5 m / s∈[0.3 m / s, 1.0 m / s], the indoor fan 31 maintains its current speed. After the indoor unit 3 directly blows air at the user's location for 6 seconds, the air guide plate 64 rotates clockwise to 24° at an angular velocity of 22° / s, then rotates counterclockwise back to its initial position of 90°. Simultaneously, the swing blade assembly 63 rotates clockwise to -40° at an angular velocity of 20° / s, then rotates counterclockwise back to its initial position of 20°. This process takes 54 seconds.

[0176] 21A is a schematic diagram of a target air supply angle range of another air conditioner according to some embodiments (the user is in the first air supply area).

[0177] In some embodiments, as shown in FIG21A , the preset air supply coverage range of the swing blade assembly 63 includes multiple target areas. For example, the multiple target areas include a first air supply area R1, a second air supply area R2, a third air supply area R3, a fourth air supply area R4, and a fifth air supply area R5. The first air supply area R1 to the fifth air supply area R5 are arranged in a counterclockwise direction, are fan-shaped, and share a common center. In the first air supply area R1 to the fifth air supply area R5, the air supply angle of the swing blade assembly 63 corresponding to each target area is the same. For example, the air supply angle of the swing blade assembly 63 corresponding to each target area is 2θ1 / 5 (i.e., (θmax-θmin) / 5). When the absolute value of the first air supply angle θmin is equal to the second air supply angle θmax, 2θ1 / 5=2θmax=-2θmin.

[0178] In this case, when determining the target air supply angle range corresponding to the swing blade assembly 63, the controller 7 is also configured to determine the target area where the human body is located based on the recognition signal of the human body detection device 6, and determine the target air supply angle range corresponding to the swing blade assembly 63 based on the total number of the multiple target areas, the first extreme air supply direction D1 and the second extreme air supply direction D2 of the swing blade assembly 63 and the target area where the human body is located.

[0179] It is understood that, to facilitate calculation of the target air supply angle range corresponding to the swing blade assembly 63, the area detectable by the human detection device 6 and the preset air supply coverage range of the swing blade assembly 63 are approximately considered to coincide. For example, the center line of each target area is used as the starting position of the swing blade assembly 63, and the angle between this starting position and the center line P is the first lateral angle H1.

[0180] That is, when the human body detection device 6 detects that the user is in the first air supply area R1, the center line of the first air supply area R1 serves as the starting position of the swing blade assembly 63; when the human body detection device 6 detects that the user is in the third air supply area R3, the center line of the third air supply area R3 serves as the starting position of the swing blade assembly 63, and the first lateral angle H1 corresponding to the center line of the third air supply area R3 is 0° (that is, the center line of the third air supply area R3 is collinear with the center line P). The swing blade assembly 63 swings clockwise or counterclockwise from the first lateral angle H1 to the second lateral angle H2 and then swings back to the first lateral angle H1. This process is one swing cycle.

[0181] For example, when the user is located in the first air supply area R1, the first lateral angle H1 is approximately equal to (-4) / 5, the second lateral angle H2 is approximately equal to θ1 / 5, and the swing blade assembly 63 rotates counterclockwise from the first lateral angle H1 to the second lateral angle H2 and then rotates clockwise back to the first lateral angle H1.

[0182] FIG21B is a schematic diagram illustrating another target air supply angle range for another air conditioner according to some embodiments (when the user is in the second air supply area). As shown in FIG21B , when the user is in the second air supply area, the first lateral angle H1 is approximately equal to (-2θ1) / 5, the second lateral angle H2 is approximately equal to 3θ1 / 5, and the swing blade assembly 63 rotates counterclockwise from the first lateral angle H1 to the second lateral angle H2 and then clockwise back to the first lateral angle H1.

[0183] FIG21C is a schematic diagram of another target air supply angle range for another air conditioner according to some embodiments (the user is in the third air supply area). FIG21D is a schematic diagram of another target air supply angle range for another air conditioner according to some embodiments (the user is in the third air supply area). As shown in FIG21C and FIG21D , when the user is in the third air supply area, the first lateral angle H1 is approximately equal to 0°, and the second lateral angle H2 is approximately equal to θmax or θmin. If the second lateral angle H2 is approximately equal to θmax, the swing blade assembly 63 rotates counterclockwise from the first lateral angle H1 to the second lateral angle H2 and then rotates clockwise back to the first lateral angle H1. If the second lateral angle H2 is approximately equal to θmin, the swing blade assembly 63 rotates clockwise from the first lateral angle H1 to the second lateral angle H2 and then rotates counterclockwise back to the first lateral angle H1.

[0184] FIG21E is a schematic diagram of another target air supply angle range for another air conditioner according to some embodiments (the user is in the fourth air supply area). As shown in FIG21E , when the user is in the fourth air supply area, the first lateral angle H1 is approximately equal to 2θ1 / 5, the second lateral angle H2 is approximately equal to (-3θ1) / 5, and the swing blade assembly 63 rotates clockwise from the first lateral angle H1 to the second lateral angle H2 and then counterclockwise back to the first lateral angle H1.

[0185] FIG21F is a schematic diagram illustrating another target air supply angle range for another air conditioner according to some embodiments (when the user is in the fifth air supply area). As shown in FIG21F , when the user is in the fifth air supply area, the first lateral angle H1 is approximately equal to 4θ1 / 5, the second lateral angle H2 is approximately equal to (-θ1) / 5, and the swing blade assembly 63 rotates clockwise from the first lateral angle H1 to the second lateral angle H2 and then counterclockwise back to the first lateral angle H1.

[0186] In this way, when the starting position of the swing blade assembly 63 is located in the first air supply area R1 to the fifth air supply area R5, the first lateral angle H1, the second lateral angle H2 and the rotation direction from the starting position to the target position of the swing blade assembly 63 are detailed in Table 2.

[0187] Table 2 The first lateral angle H1, the second lateral angle H2 and the rotation direction from the starting position to the target position of the swing blade assembly 63

[0188] In some embodiments, the air conditioner 1 includes a floor-standing indoor unit 3, the air guide mechanism includes an air guide plate 64 and a swing blade assembly 63, and the controller 7 is configured to control the action timing of the air guide plate 64 and the swing blade assembly 63, thereby realizing the heat stress comfort function.

[0189] The setting parameters of the air conditioner 1 include: SET = 26°C, Δt = 1.5°C, T0 = 60s, T1 = 6s, T2 = 54s, θmax = 60°, θmin = -60°, δmax = 60°, δmin = -60°, the first longitudinal angle of the air deflector 64 is 24°, the second longitudinal angle of the air deflector 64 is 90°, and the angle between the first longitudinal position L1 and the second longitudinal position L2 of the air deflector 64 is 64°. The preset lower wind speed limit is 0.3m / s, and the preset upper wind speed limit is 1.0m / s.

[0190] The calculation method of the first angular velocity ω1 and the second angular velocity ω2 is the same as that in the above embodiment and will not be repeated here.

[0191] Figure 22 is an air supply flow diagram of the indoor unit when the air guide plate of another air conditioner swings to the first longitudinal position L1 according to some embodiments, Figure 23 is an air supply flow diagram of the indoor unit when the swing blade assembly of another air conditioner swings to the first lateral air supply direction D3 according to some embodiments, Figure 24 is an air supply flow diagram of the indoor unit when the air guide plate of another air conditioner swings to the second longitudinal position L2 according to some embodiments, and Figure 25 is an air supply flow diagram of the indoor unit when the swing blade assembly of another air conditioner swings to the second lateral air supply direction D4 according to some embodiments.

[0192] When the user turns on the heat stress comfort function, if the human body detection device 6 detects that the human body is located in the first air supply area R1, the controller 7 is configured to execute steps S201 to S203.

[0193] In step S201, the corrected standard effective temperature (ie, Δt+SET) is calculated by using the preset increment Δt and the standard effective temperature SET, and the air temperature is adjusted to 27.5°C (26°C+1.5°C).

[0194] In step S202, as shown in Figures 22 and 23, the wind guide plate 64 is controlled to rotate to the first longitudinal angle (24°) and stay for 6s (i.e., the first preset time T1). Synchronously, the swing blade assembly 63 is controlled to rotate to the first lateral angle H1 (-48°) and stay for 6s (i.e., the first preset time T1).

[0195] For example, when the user is located in the first air supply area R1, the first lateral angle H1 is approximately equal to (-4θ1) / 5, and θ1=θmax=60°, so the first lateral angle H1 is 60°*(-4 / 5)=-48°.

[0196] In step S203, as shown in Figures 24 and 25, the wind guide plate 64 is controlled to rotate clockwise to the second longitudinal angle (90°) at an angular velocity of 2α / T2=2*(90°-24°) / 6=22° / s, and then rotated counterclockwise back to the first longitudinal angle (24°) at an angular velocity of 22° / s. Synchronously, the swing blade assembly 63 is controlled to rotate counterclockwise to the second lateral angle H2 (12°) at a speed of 2θ1 / T2=2*60 / 6=20° / s, and then rotated counterclockwise back to the first lateral angle H1 (-48°) at an angular velocity of 20° / s. This process takes 54s (i.e., the second preset time T2).

[0197] For example, when the user is located in the first air supply area R1, the second lateral angle H2 is approximately equal to θ1 / 5, and θ1=θmax=60°, so the first lateral angle H1 is 60°*1 / 5=12°.

[0198] In some embodiments, in step S13, the controller 7 is further configured to control the air guide plate 64 and the swing blade assembly 63 not to rotate and control the speed of the indoor fan 31 to remain unchanged if there is no human body within the preset air supply coverage range of the indoor unit 3.

[0199] Since the user is in the detection blind spot of the human body detection device 6 or there is no one in the room, even if the airflow direction and the speed of the indoor fan 3 are changed, the heat stress function cannot be achieved. Therefore, in this case, the controller 7 controls the standard effective temperature to maintain the preset value, and controls the rotation angle of the air guide plate 64 and the swing blade assembly 63 to remain unchanged at the previous state, thereby effectively saving energy.

[0200] Based on the above-mentioned air conditioner 1 , as shown in FIG5 , some embodiments of the present disclosure further provide a comfort control method for an air conditioner. The method is executed by a controller 7 and includes steps S1 to S6 .

[0201] In step S1 , it is determined whether the heat stress comfort function is turned on. If so, step S2 is executed; if not, step S1 is executed again.

[0202] In step S2 , the recognition signal of the human body detection device 6 and the current rotation speed of the indoor fan 31 are acquired.

[0203] For example, when the controller 7 determines that the heat stress comfort function of the air conditioner 1 is turned on, the human body detection device 6 detects the distance and relative angle between the human body and the air outlet 72 of the indoor unit 3 in real time, and sends an identification signal representing the distance and the relative angle to the controller.

[0204] In step S3, based on the recognition signal, it is determined whether there is a human body within the preset air supply coverage area of ​​the indoor unit 3. If so, step S4 is executed.

[0205] In step S4 , the wind speed at the user's location is calculated based on the distance between the human body and the indoor unit 3 and the current rotation speed of the indoor fan 31 .

[0206] In step S5, the magnitude relationship between the wind speed at the user's location and a preset wind speed upper limit is determined. If the wind speed at the user's location is higher than the preset wind speed upper limit, step S6 is executed.

[0207] In step S6, the indoor fan 31 is controlled to reduce its rotation speed.

[0208] For example, the controller 7 controls the indoor fan 31 to reduce the rotation speed so that the wind speed at the user's location is less than the preset wind speed upper limit and greater than the preset wind speed lower limit.

[0209] In some embodiments, as shown in FIG6 , after step 4 , the method further includes step S5 ′ and steps S6 to S8 .

[0210] In step S5', the relationship between the wind speed at the user's location and the preset wind speed upper limit and the preset wind speed lower limit is determined. If the wind speed at the user's location is higher than the preset wind speed upper limit, step S6 is executed; if the wind speed at the user's location is lower than the preset wind speed lower limit, step S7 is executed; if the wind speed at the user's location is between the preset wind speed lower limit and the preset wind speed upper limit, step S8 is executed.

[0211] In step S6, the indoor fan 31 is controlled to reduce its rotation speed.

[0212] In step S7, the indoor fan 31 is controlled to increase its rotation speed.

[0213] For example, the controller 7 controls the indoor fan 31 to increase the rotation speed so that the wind speed at the user's location is less than the preset wind speed upper limit and greater than the preset wind speed lower limit.

[0214] It should be noted that when the wind speed is too low, the user feels a slight breeze and cannot clearly feel the temperature change. Therefore, if the wind speed is too low, the indoor fan 31 is controlled to increase its speed to avoid the body temperature being too low due to the low wind speed, thereby effectively improving comfort.

[0215] The preset lower wind speed limit can be set based on actual comfort requirements and is not limited here. For example, the preset lower wind speed limit can be any value between 0.3 and 0.5 m / s. For example, the preset lower wind speed limit can be 0.3 m / s, 0.4 m / s, or 0.5 m / s.

[0216] In step S8, the indoor fan 31 is controlled to maintain the current rotation speed.

[0217] It can be understood that if the wind speed at the user's location is between the preset lower limit of the wind speed and the preset upper limit of the wind speed, the surface wind speed is moderate. In this case, the speed of the indoor fan 31 is controlled to remain unchanged, so that the perceived temperature felt by the human body is maintained at an appropriate level, which can effectively improve the user's comfort.

[0218] In some embodiments, as shown in FIG7 , when it is determined based on the identification signal that a human body exists within the preset air supply coverage range of the indoor unit 3 , the method further includes step S9 , which is executed synchronously with step S4 .

[0219] In step S9, the preset standard effective temperature is corrected according to the preset increment to obtain a corrected temperature, and the air temperature of the air conditioner 1 is adjusted according to the preset human metabolic rate, clothing thermal resistance, relative humidity, mean radiant temperature and the corrected temperature.

[0220] It is understood that the controller 7 adjusts the temperature of the air blown out of the air conditioner 1 according to the corrected temperature obtained by correcting the standard effective temperature, thereby ensuring user comfort while also reducing the energy consumption of the air conditioner 1. For example, when the air conditioner 1 is in cooling mode, every 1°C increase in the corrected temperature can save approximately 10% of energy, and every 1.5°C increase in the corrected temperature can save approximately 15% of energy.

[0221] In some embodiments, as shown in FIG8 , when it is determined based on the identification signal that a human body exists within the preset air supply coverage range of the indoor unit 3, the method further includes steps S10A and S10B, step S10A is executed synchronously with step S4 and step S9, and step S10B is executed after step S10A is executed.

[0222] In step S10A, the target air supply angle range corresponding to the swing blade assembly 63 is determined according to the recognition signal of the human body detection device 6 , and the target air supply angle range corresponding to the air guide plate 64 is obtained.

[0223] For example, the target air supply angle range corresponding to the swing blade assembly 63 is determined based on the recognition signal of the human body detection device 6. The target air supply angle range corresponding to the swing blade assembly 63 includes an air supply direction that avoids the human body (i.e., does not directly blow on the human body) and an air supply direction that intersects the human body (i.e., directly blows on the human body).

[0224] For example, the target air supply angle range corresponding to the air guide plate 64 is determined based on the recognition signal of the human body detection device 6, or the angle of the air guide plate 64 to achieve the ceiling airflow (that is, the angle position at which there is no wind in the range of 1.7m to 2.0m from the ground) can be obtained in advance through testing, and then the target air supply angle range corresponding to the air guide plate 64 is determined based on the angle and the maximum angle or larger position to which the air guide plate 64 can normally rotate, so as to achieve the up and down swinging air conditioning supply that blows periodically onto the user.

[0225] In step S10B, the air guide plate 64 and the swing blade assembly 63 swing in a preset pattern within their corresponding target air supply angle ranges.

[0226] For example, in the preset mode, the air guide plate 64 and the swing blade assembly 63 stay at an air supply angle that avoids the human body for a longer time than at an air supply angle that intersects the human body.

[0227] Based on the above air conditioner 1 , as shown in FIG9A , some embodiments of the present disclosure further provide another comfort control method for an air conditioner. The method is executed by the controller 7 and includes steps S21 ′ to S25 ′.

[0228] In step S21 ′, it is determined whether the heat stress comfort function is turned on. If so, step S22 ′ is executed.

[0229] In step S22 ′, the recognition signal of the human body detection device 6 is acquired.

[0230] In step S23', based on the recognition signal of the human body detection device 6, it is determined whether there is a human body within the preset air supply coverage area of ​​the indoor unit 3. If so, step S24' is executed.

[0231] In step S24 ′, the target air supply angle range corresponding to the swing blade assembly 63 is determined according to the recognition signal, and the target air supply angle range corresponding to the air guide plate 64 is obtained.

[0232] In step S25 ′, the air guide plate 64 and the swing blade assembly 63 are controlled to swing in a preset mode within their corresponding target air supply angle ranges.

[0233] In some embodiments, as shown in FIG9B , when it is determined based on the recognition signal of the human detection device 6 that a human body exists within the preset air supply coverage of the indoor unit 3 , the method further includes step S26 ′, which is executed synchronously with step S24 ′.

[0234] In step S26', the preset standard effective temperature is corrected according to the preset increment to obtain a corrected temperature, and the target operating parameters of the air conditioner 1 are adjusted according to the preset human metabolic rate, clothing thermal resistance, relative humidity, mean radiant temperature and the corrected temperature.

[0235] Those skilled in the art will understand that the scope of the present invention is not limited to the above specific embodiments, and that certain elements of the embodiments may be modified and replaced without departing from the spirit of the present application. The scope of the present application is limited by the appended claims.

Claims

1. An air conditioner, comprising: Outdoor unit; an indoor unit connected to the outdoor unit and comprising an air outlet and a fan; a human body detection device, configured to detect the distance and relative angle between the human body and the air outlet; and The controller is configured as: When it is determined that the comfort air supply function of the air conditioner is turned on, obtaining the identification signal of the human body detection device and the current speed of the fan; When it is determined according to the recognition signal that a human body exists within the preset air supply coverage range of the indoor unit, the wind speed at the user's location is calculated according to the distance and the current speed; and When the wind speed at the user's location is higher than a preset wind speed upper limit, controlling the fan to reduce its speed; Wherein, the identification signal includes the distance and the relative angle between the human body and the air outlet.

2. The air conditioner according to claim 1, wherein The controller is further configured to control the fan to increase its rotation speed when the wind speed at the user's location is lower than a preset wind speed lower limit.

3. The air conditioner according to claim 1 or 2, wherein: The controller is further configured to control the fan to maintain the current rotation speed when the wind speed at the user's location is between a preset lower wind speed limit and a preset upper wind speed limit.

4. The air conditioner according to any one of claims 1 to 3, wherein: When the controller determines, based on the identification signal, that a human body exists within the preset air supply coverage range of the indoor unit, the controller is further configured to correct the preset standard effective temperature according to a preset increment to obtain a corrected temperature, and adjust the air temperature of the air conditioner based on one or more of a preset human metabolic rate, clothing thermal resistance, relative humidity, average radiant temperature and the corrected temperature.

5. The air conditioner according to any one of claims 1 to 4, wherein: The indoor unit further includes: an air guide plate configured to adjust an air supply angle of the indoor unit in a vertical direction; and a swing blade assembly configured to adjust the air supply angle of the indoor unit in the horizontal direction; the swing blade assembly and the air guide plate are arranged at the air outlet; When the controller determines, based on the recognition signal, that a human body exists within the preset air supply coverage range of the indoor unit, the controller is further configured to: Determining a target air supply angle range corresponding to the swing blade assembly according to the relative angle, and obtaining a target air supply angle range corresponding to the air guide plate; and Controlling the air guide plate and the swing blade assembly to swing in a preset mode within their corresponding target air supply angle ranges; Among them, the target air supply angle range corresponding to the swing blade assembly and the target air supply angle range corresponding to the air guide plate respectively include an air supply direction avoiding the human body and an air supply direction intersecting the human body; in the preset mode, the air guide plate and the swing blade assembly stay in the air supply direction avoiding the human body for a longer time than the stay in the air supply direction intersecting the human body.

6. The air conditioner according to claim 5, wherein The preset air supply coverage range of the swing blade assembly includes the center line; the relative angle is the angle between the line connecting the human body and the indoor unit and the center line; The preset air supply coverage range of the swing blade assembly is an area enclosed by a first limit air supply direction and a second limit air supply direction of the swing blade assembly; the angle between the first limit air supply direction and the center line is a first air supply angle, and the first air supply angle is located in a clockwise direction of the center line; the angle between the second limit air supply direction and the center line is a second air supply angle, and the second air supply angle is located in a counterclockwise direction of the center line; The target air supply angle range corresponding to the swing blade assembly is an area enclosed by a first transverse air supply direction and a second transverse air supply direction; wherein, when the swing blade assembly swings to the first transverse air supply direction, the air supply direction of the swing blade assembly intersects with a human body, and when the swing blade assembly swings to the second transverse air supply direction, the air supply direction of the swing blade assembly avoids the human body; the angle between the first transverse air supply direction and the center line is a first transverse angle, and the angle between the second transverse air supply direction and the center line is a second transverse angle; Determining the target air supply angle range corresponding to the swing blade assembly according to the relative angle includes: When the user is in a clockwise direction of the centerline, determining that the first lateral angle is approximately equal to the relative angle, the sum of the absolute value of the second lateral angle and the absolute value of the first lateral angle is approximately equal to half the sum of the absolute value of the first air supply angle and the absolute value of the second air supply angle, and the second lateral angle is in a counterclockwise direction of the centerline; and When the user is in the counterclockwise direction of the center line, it is determined that the first lateral angle is approximately equal to the relative angle, the sum of the absolute value of the second lateral angle and the absolute value of the first lateral angle is approximately equal to half of the sum of the absolute value of the first air supply angle and the absolute value of the second air supply angle, and the second lateral angle is in the clockwise direction of the center line.

7. The air conditioner according to claim 5 or 6, wherein: The target air supply angle range corresponding to the air deflector is the angle between the first longitudinal position and the second longitudinal position; wherein, when the air deflector is rotated to the first longitudinal position, the air supply direction of the air deflector intersects with the human body; when the air deflector is rotated to the second longitudinal position, the air supply direction of the air deflector avoids the human body; The target air supply angle range corresponding to the swing blade assembly is an area enclosed by a first transverse air supply direction and a second transverse air supply direction; wherein, when the swing blade assembly swings to the first transverse air supply direction, the air supply direction of the swing blade assembly intersects with the human body, and when the swing blade assembly swings to the second transverse air supply direction, the air supply direction of the swing blade assembly avoids the human body; The controlling the air guide plate and the swing blade assembly to swing in the preset mode within their corresponding target air supply angle ranges respectively includes: Controlling the air guide plate to stay at the first longitudinal position for a first preset time, and synchronously controlling the swing blade assembly to stay in the first transverse air supply direction for the first preset time; and Within a second preset time after the first preset time ends, the air guide plate is controlled to swing to the second longitudinal position and then swing back from the second longitudinal position to the first longitudinal position, and the swing blade assembly is synchronously controlled to swing to the second transverse air supply direction and then swing back from the second transverse air supply direction to the first transverse air supply direction; The second preset time is greater than the first preset time.

8. The air conditioner according to claim 7, wherein: The rotational angular velocity of the air deflector is substantially equal to the ratio of twice the angle between the first longitudinal position and the second longitudinal position to the first preset time; The rotational angular velocity of the swing blade assembly is substantially equal to the ratio of twice the angle between the first transverse air supply direction and the second transverse air supply direction to the first preset time.

9. A comfort control method for an air conditioner, wherein: The air conditioner includes an outdoor unit, an indoor unit and a human body detection device; the indoor unit includes an air outlet and a fan; the human body detection device is configured to detect the distance and relative angle between the human body and the air outlet; The method comprises: When it is determined that the comfort air supply function of the air conditioner is turned on, obtaining the identification signal of the human body detection device and the current speed of the fan; When it is determined according to the recognition signal that a human body exists within the preset air supply coverage range of the indoor unit, calculating the wind speed at the user's location according to the distance and the current speed; and When the wind speed at the user's location is higher than a preset wind speed upper limit, controlling the fan to reduce its speed; Wherein, the identification signal includes the distance and the relative angle between the human body and the air outlet.

10. The method according to claim 9, further comprising: When the wind speed at the user's location is lower than a preset wind speed lower limit, the fan is controlled to increase its rotation speed.

11. The method according to claim 9 or 10, further comprising: When the wind speed at the user's location is between a preset lower wind speed limit and a preset upper wind speed limit, the fan is controlled to maintain the current speed.

12. An air conditioner comprising: Outdoor unit; An indoor unit connected to the outdoor unit; the indoor unit includes: air outlet; an air guide plate configured to adjust an air supply angle of the indoor unit in a vertical direction; and a swing blade assembly configured to adjust the air supply angle of the indoor unit in the horizontal direction; the swing blade assembly and the air guide plate are arranged at the air outlet; A human body detection device configured to identify a human body position; and The controller is configured as: When it is determined that the comfort air supply function of the air conditioner is turned on, obtaining an identification signal of the human body detection device; When it is determined according to the recognition signal that a human body exists within the preset air supply coverage range of the indoor unit, determining the target air supply angle range corresponding to the swing blade assembly according to the recognition signal, and obtaining the target air supply angle range corresponding to the air guide plate; and Controlling the air guide plate and the swing blade assembly to swing in a preset mode within their corresponding target air supply angle ranges; In which, the identification signal includes the orientation of the human body; the target air supply angle range corresponding to the swing blade assembly and the target air supply angle range corresponding to the air guide plate respectively include an air supply direction avoiding the human body and an air supply direction intersecting the human body; in the preset mode, the air guide plate and the swing blade assembly stay in the air supply direction avoiding the human body for a longer time than the stay in the air supply direction intersecting the human body.

13. The air conditioner according to claim 12, wherein When the controller determines, based on the identification signal, that a human body exists within the preset air supply coverage range of the indoor unit, the controller is further configured to correct the preset standard effective temperature according to a preset increment to obtain a corrected temperature, and adjust the air temperature of the air conditioner according to the preset human metabolic rate, clothing thermal resistance, relative humidity, average radiant temperature and the corrected temperature.

14. The air conditioner according to claim 12 or 13, wherein: The preset air supply coverage range of the swing blade assembly includes multiple target areas; The determining, according to the identification signal, a target air supply angle range corresponding to the swing blade assembly includes: determining a target area where the human body is located according to the recognition signal; The target air supply angle range corresponding to the swing blade assembly is determined according to the total number of the target areas, the first limit air supply direction and the second limit air supply direction of the swing blade assembly, and the target area where the human body is located.

15. The air conditioner according to any one of claims 12 to 14, wherein: The target air supply angle range corresponding to the air deflector is the angle between the first longitudinal position and the second longitudinal position; wherein, when the air deflector is rotated to the first longitudinal position, the air supply direction of the air deflector intersects with the human body; when the air deflector is rotated to the second longitudinal position, the air supply direction of the air deflector avoids the human body; The target air supply angle range corresponding to the swing blade assembly is an area enclosed by a first transverse air supply direction and a second transverse air supply direction; wherein, when the swing blade assembly swings to the first transverse air supply direction, the air supply direction of the swing blade assembly intersects with the human body, and when the swing blade assembly swings to the second transverse air supply direction, the air supply direction of the swing blade assembly avoids the human body; The controlling the air guide plate and the swing blade assembly to swing in the preset mode within their corresponding target air supply angle ranges respectively includes: Controlling the air guide plate to stay at the first longitudinal position for a first preset time, and synchronously controlling the swing blade assembly to stay in the first transverse air supply direction for the first preset time; and Within a second preset time, the air guide plate is controlled to swing to the second longitudinal position and then swing back from the second longitudinal position to the first longitudinal position, and the swing blade assembly is synchronously controlled to swing to the second transverse air supply direction and then swing back from the second transverse air supply direction to the first transverse air supply direction; The second preset time is greater than the first preset time.

16. The air conditioner according to claim 15, wherein The rotational angular velocity of the air deflector is equal to the ratio of twice the angle between the first longitudinal position and the second longitudinal position to the first preset time; The rotational angular velocity of the swing blade assembly is equal to the difference between the first transverse air supply direction and the second transverse air supply direction. The ratio of twice the included angle between the two times to the first preset time.

17. The air conditioner according to any one of claims 12 to 16, wherein: When the controller determines, based on the identification signal, that there is no human body within the preset air supply coverage range of the indoor unit, the controller is further configured to control the air guide plate and the swing blade assembly not to rotate.

18. A comfort control method for an air conditioner, wherein: The air conditioner includes an outdoor unit, an indoor unit and a human detection device; the indoor unit includes an air outlet, an air guide plate for adjusting the air supply angle of the indoor unit in the vertical direction, and a swing blade assembly for adjusting the air supply angle of the indoor unit in the horizontal direction; The human body detection device is configured to identify the orientation of a human body; The method comprises: When it is determined that the comfort air supply function of the air conditioner is turned on, obtaining an identification signal of the human body detection device; When it is determined according to the recognition signal that a human body exists within the preset air supply coverage range of the indoor unit, determining the target air supply angle range corresponding to the swing blade assembly according to the recognition signal, and obtaining the target air supply angle range corresponding to the air guide plate; and Controlling the air guide plate and the swing blade assembly to swing in a preset mode within their corresponding target air supply angle ranges; In which, the identification signal includes the orientation of the human body; the target air supply angle range corresponding to the swing blade assembly and the target air supply angle range corresponding to the air guide plate respectively include an air supply direction avoiding the human body and an air supply direction intersecting the human body; in the preset mode, the air guide plate and the swing blade assembly stay in the air supply direction avoiding the human body for a longer time than the stay in the air supply direction intersecting the human body.

19. The method according to claim 18, wherein When it is determined, based on the recognition signal, that a human body exists within the preset air supply coverage range of the indoor unit, the method further includes: The preset standard effective temperature is corrected according to the preset increment to obtain a corrected temperature, and the air temperature of the air conditioner is adjusted according to the preset human metabolic rate, clothing thermal resistance, relative humidity, mean radiant temperature and the corrected temperature.

20. The method according to claim 18 or 19, wherein The preset air supply coverage range of the swing blade assembly includes multiple target areas; The determining, according to the identification signal, a target air supply angle range corresponding to the swing blade assembly includes: determining a target area where the human body is located according to the recognition signal; The target air supply angle range corresponding to the swing blade assembly is determined according to the total number of the target areas, the first limit air supply direction and the second limit air supply direction of the swing blade assembly, and the target area where the human body is located.

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