Air conditioner indoor unit, control method thereof, electronic device, and air conditioner

Abstract

The application relates to the technical field of air conditioners, in particular to an air conditioner indoor unit, a control method thereof, an electronic device and an air conditioner. The air conditioner comprises a casing, an air inlet and an air outlet are arranged on the casing; an air duct assembly is arranged in the casing and comprises at least a volute, a volute tongue and a movable volute throat, the volute is arranged opposite to the volute tongue and defines an air duct; a first end of the volute is close to the air inlet, a second end of the volute extends to the air outlet, and the movable volute throat is arranged at the first end; the movable volute throat has an extended state close to the air inlet and a retracted state away from the air inlet; a guide air assembly comprises at least a first rotatable guide air plate and a second rotatable guide air plate, and both are arranged at the air outlet. The second guide air plate can cooperate with the first guide air plate to form different guide air states. The air duct assembly and the guide air assembly are configured so that different extension lengths of the movable volute throat cooperate with different guide air states of the guide air assembly to form different air outlet modes. The application can improve the air outlet effect and improve the comfort.

Description

Technical Field

[0001] This application relates to the field of air conditioner technology, and more specifically, to an indoor air conditioner unit and its control method, electronic equipment, and air conditioner. Background Technology

[0002] With the development of the times and the continuous progress of science and technology, users not only need air conditioners to have faster cooling and heating speeds, but also pay more and more attention to the comfort performance of air conditioners.

[0003] In related technologies, faster cooling and heating are achieved by increasing the speed of indoor fans to increase airflow. However, when excessively fast cold or hot air blows directly on the human body, it will inevitably cause discomfort. Prolonged exposure to cold air can also lead to air conditioning sickness, resulting in poor comfort. Summary of the Invention

[0004] In view of this, this application provides an indoor air conditioning unit and its control method, electronic equipment and air conditioner to improve air supply effect, switch between a first mode and wall-mounted air supply as needed, and improve user comfort.

[0005] In a first aspect, this application provides an air conditioner indoor unit, comprising: The housing has an air inlet and an air outlet, with the air inlet and air outlet positioned opposite to each other. An air duct assembly is disposed within the housing. The air duct assembly includes at least a volute, a volute tongue, and a movable volute throat. The volute and the volute tongue are arranged opposite to each other and define an air outlet duct. A first end of the volute is close to the air inlet, and a second end of the volute extends to the air outlet. The movable volute throat is disposed at the first end. The movable volute throat has an extended state close to the air inlet and a retracted state away from the air inlet. The air guiding assembly includes at least a rotatable first air guiding plate and a rotatable second air guiding plate, both of which are disposed at the air outlet; wherein the first air guiding plate is close to the volute, the second air guiding plate is close to the volute tongue, and the second air guiding plate can cooperate with the first air guiding plate to form different air guiding states. The air duct assembly and the air guide assembly are configured such that different extension lengths of the movable volute are coordinated with different air guiding states of the air guide assembly to form different air outlet modes of the indoor unit of the air conditioner.

[0006] By employing the above technical solution, a retractable volute is installed at the air inlet of the duct, in conjunction with a first and second guide vane arranged opposite to each other at the air outlet, enabling independent adjustment and coordinated matching of the duct's airflow characteristics and the airflow direction. When extended, the volute effectively blocks airflow backflow at the duct inlet, stabilizes the eccentric vortex structure inside the fan, and increases the air volume while reducing fan operating noise. When retracted, it adapts to the airflow organization requirements of low-volume operating conditions. The first and second guide vanes, through different angle combinations, can be matched with different extension lengths of the volute to form different airflow modes. When switched to the first mode, the first and second guide vanes together form an upward-facing airflow channel, guiding the airflow upwards to the ceiling area where it naturally settles, preventing cold air from directly blowing on the human body. When switched to the wall-mounted airflow mode, the second guide vane can retract into the duct, with only the first guide vane guiding the airflow along the ceiling for long-distance air delivery. In this way, the needs for rapid temperature adjustment and comfortable air supply can be met, the problem of cold air blowing directly under high air volume can be avoided, and the operating energy consumption and noise can be reduced, thereby improving the performance of the indoor unit of the air conditioner.

[0007] In the optional embodiment of the above-mentioned air conditioner indoor unit, the air inlet is located at the upper part of the housing, and the air outlet is located at the lower front part of the housing; the housing includes a front shell, and the volute is disposed close to the front shell; The first air guide plate is rotatably disposed at the second end of the volute, and the first air guide plate can be controlled to rotate toward or away from the second air guide plate; The second air guide plate is rotatably disposed at the air outlet end of the volute tongue, and the second air guide plate can be controlled to rotate at least in the direction close to the first air guide plate.

[0008] In the optional implementation of the above-mentioned air conditioner indoor unit, when the free end of the first air guide plate and the moving end of the second air guide plate are both connected to the lower end of the front shell, the air outlet is in a closed state.

[0009] In the optional implementation of the above-mentioned air conditioner indoor unit, a mounting part is formed at the first end near the volute, and the movable volute is slidably connected, telescopically connected, or rotatably connected to the mounting part.

[0010] In an optional embodiment of the above-mentioned air conditioner indoor unit, the movable volute is slidably connected to the mounting part.

[0011] In an optional embodiment of the above-mentioned air conditioner indoor unit, the air duct assembly further includes a drive mechanism, the drive mechanism comprising: A drive motor is installed inside the housing; The transmission gear is connected to the output shaft of the drive motor. A sliding rack is provided on the movable worm gear and meshes with the transmission gear; The drive motor drives the movable volute to move closer to or further away from the air inlet through the meshing of the transmission gear and the sliding rack, so as to adjust the length of the movable volute.

[0012] Secondly, this application provides a control method for an air conditioner indoor unit, which is applied to the air conditioner indoor unit as described above; The control method includes: Determine if there are users indoors; if so, obtain user location information, indoor ambient temperature, and outdoor ambient temperature. Based on the user location information, the target air supply area is determined; The target cooling rate is determined based on the temperature difference between the indoor ambient temperature and the set temperature of the indoor unit of the air conditioner. Based on the target air supply area, the target cooling rate, the indoor ambient temperature, and the outdoor ambient temperature, the target air supply parameters of the indoor air conditioning unit are determined and executed. The target air supply parameters include at least the extension distance of the movable volute, the rotation angle of the first air guide plate, and the air guiding angle of the second air guide plate.

[0013] When the above technical solution is adopted, the first mode is activated upon detecting a user. The target air supply area is determined using the user's location information, enabling matching of the air supply settling position with the user's location and preventing direct cold airflow. Simultaneously, the target cooling rate is determined based on the temperature difference between the actual indoor temperature and the set temperature. This, combined with the indoor and outdoor ambient temperatures, determines the extension distance of the active volute, the air guiding angle of the first air guide plate, the air diversion angle of the second air guide plate, and the operating parameters of the indoor air conditioning unit. In this way, coordinated control of structural air supply parameters and operating condition parameters is achieved, improving comfort while reducing energy consumption.

[0014] In an optional implementation of the above-mentioned control method for the indoor unit of an air conditioner, determining the target air supply area based on the user's location information includes: The user distance is determined based on the user location information, where the user distance is the straight-line distance of the user relative to the installation surface of the indoor unit of the air conditioner; The target air supply area is determined based on the user distance. The first boundary of the target air supply area is not greater than the user distance, and the second boundary of the target air supply area is greater than the user distance. The first boundary is the closest boundary of the target air supply area relative to the indoor unit of the air conditioner, and the second boundary is the farthest boundary of the target air supply area relative to the indoor unit of the air conditioner.

[0015] In an optional implementation of the above-mentioned control method for the indoor unit of an air conditioner, if there are multiple users in the indoor space, determining the user distance based on the user location information includes: The distance between users is determined based on the center location of the areas where the multiple users are located.

[0016] In an optional implementation of the above-mentioned control method for an indoor air conditioning unit, determining the target air supply parameters of the indoor air conditioning unit based on the target air supply area, the target cooling rate, the indoor ambient temperature, and the outdoor ambient temperature includes: The target air supply area, the target cooling rate, the indoor ambient temperature, and the outdoor ambient temperature are input into the pre-trained prediction model, and the target air supply parameters of the indoor air conditioning unit are output and determined.

[0017] In an optional implementation of the above-mentioned control method for an indoor air conditioning unit, the input layer of the prediction model includes at least the target air supply parameters, the outdoor ambient temperature, and the indoor ambient temperature, and the output layer of the prediction model includes at least the target air supply area, the target temperature drop rate, and the operating power of the indoor air conditioning unit. The target air supply area, the target cooling rate, the indoor ambient temperature, and the outdoor ambient temperature are input into a pre-trained prediction model, which outputs and determines the operating parameters of the indoor unit of the air conditioner, including: The target air supply area, the target cooling rate, the indoor ambient temperature, and the outdoor ambient temperature are input into the prediction model and solved in reverse to obtain multiple sets of air supply parameters under different operating power. The operating parameters corresponding to the minimum operating power are taken as the target air supply parameters.

[0018] In an optional implementation of the above-mentioned control method for an indoor air conditioning unit, determining the target cooling rate based on the temperature difference between the indoor ambient temperature and the set temperature of the indoor air conditioning unit includes: If the indoor ambient temperature Tin is greater than or equal to the sum of the target temperature Tn and the preset temperature T' of the indoor unit of the air conditioner, then the target cooling rate V is determined to be within the first rate range. If the indoor ambient temperature Tin is less than the sum of the target temperature Tn and the preset temperature T' of the indoor unit of the air conditioner, then the target cooling rate V is determined to be within the second rate range. Wherein, the minimum threshold of the first rate range is greater than the maximum threshold of the second rate range.

[0019] Thirdly, this application provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor enters the program execution state, it implements the control method described above.

[0020] Fourthly, this application provides an air conditioner, including a control device or the aforementioned electronic device, wherein the control device is configured with a control program for the control method of the indoor unit of the air conditioner as described above. Attached Figure Description

[0021] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings: Figure 1 This is a structural schematic diagram of an air conditioner indoor unit provided in this application, wherein the air conditioner indoor unit is in a second mode; Figure 2 This is another schematic diagram of an air conditioner indoor unit provided in this application, wherein the air conditioner indoor unit is in the first mode; Figure 3 This is a schematic diagram of airflow when an indoor unit of an air conditioner is operating in the second mode, as provided in this application. Figure 4 This is a schematic diagram of airflow in the first operating mode of an air conditioner indoor unit provided in this application; Figure 5(a) is a velocity cloud map of the air in the duct when the active worm throat is in the extended state, as provided in this application; Figure 5(b) is a velocity vector cloud map of the air in the duct when the active volute throat is in the extended state, as provided in this application. Figure 6(a) is a velocity cloud map of the air in the duct when the active volute is in the retracted state, as provided in this application. Figure 6(b) is a velocity vector cloud diagram of the air in the duct when the active volute is in the retracted state, as provided in this application. Figure 7 This is a schematic diagram of the structure of a drive mechanism provided in this application; Figure 8 This is a flowchart illustrating an embodiment of a control method for an indoor air conditioning unit provided in this application; Figure 9 This is a flowchart illustrating another embodiment of the control method for an indoor air conditioning unit provided in this application.

[0022] Figure label: 100. Housing; 101. Front housing; 110. Air outlet; 120. Air inlet; 200. Air duct assembly; 210. Volute housing; 220. Volute tongue; 230. Movable volute throat; 240. Indoor fan; 300, air guide assembly; 310, first air guide plate; 320, second air guide plate; 321, rotating end; 322, moving end. Detailed Implementation

[0023] The following specific embodiments illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0024] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to limit the application. The singular forms “a,” “said,” and “the” used in the embodiments of this application and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. “Multiple” generally includes at least two, but does not exclude the inclusion of at least one.

[0025] It should be understood that the term "and / or" used in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0026] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a product or system comprising a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a product or system. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the product or system that includes said element.

[0027] As described in the background section, with the development of the times and the continuous progress of science and technology, users not only need air conditioners to have faster cooling and heating speeds, but also pay more and more attention to the comfort performance of air conditioners.

[0028] In related technologies, to achieve faster cooling and heating, the indoor fan speed is increased to increase airflow. However, when excessively fast cold or hot air blows directly on the human body, it will inevitably cause discomfort. Prolonged exposure to cold air can also lead to air conditioning sickness, resulting in poor comfort.

[0029] To improve airflow performance, the system switches between the first mode and wall-mounted airflow as needed, thereby enhancing user comfort. This application provides an indoor air conditioning unit, its control method, electronic equipment, and an air conditioner.

[0030] Combination Figures 1 to 4As shown, the indoor air conditioning unit provided in this application includes a housing 100, an air duct assembly 200, and an air guide assembly 300. Figures 1 to 4 In the diagram, the arrow points in the direction of airflow. Where: The housing 100 has an air inlet 120 and an air outlet 110 that are arranged opposite to each other.

[0031] The air duct assembly 200 is disposed within the housing 100 and includes at least a volute 210, a volute tongue 220, and a movable volute throat 230. The volute 210 and the volute tongue 220 are arranged opposite to each other and define the air outlet duct. The first end of the volute 210 is close to the air inlet 120, and the second end of the volute 210 extends to the air outlet 110. The movable volute throat 230 is disposed at the first end. The movable volute throat 230 has an extended state close to the air inlet 120 and a retracted state away from the air inlet 110.

[0032] The air guiding assembly 300 includes at least a rotatable first air guiding plate 310 and a rotatable second air guiding plate 320, both of which are disposed at the air outlet 110; wherein, the first air guiding plate 310 is close to the volute 210, the second air guiding plate 320 is close to the volute tongue 220, and the second air guiding plate 320 can cooperate with the first air guiding plate 310 to form different air guiding states.

[0033] The air duct assembly 200 and the air guide assembly 300 are configured such that the different extension lengths of the movable volute 230 and the different air guiding states of the air guide assembly 300 are coordinated to form different air outlet modes of the air conditioning indoor unit.

[0034] Specifically, the indoor unit of the air conditioner can operate in at least the first mode and the second mode.

[0035] The first air guide plate 310 has a closed state and an air guiding state. In the closed state, the free end of the first air guide plate 310 is connected to the lower end of the front shell 101; in the air guiding state, the free end of the first air guide plate 310 is separated from the lower end of the front shell 101.

[0036] The second air guide plate 320 has a clearance state and an air intake state; in the clearance state, the moving end 322 of the second air guide plate 320 is connected to the lower end of the front shell 101; in the air intake state, the moving end 322 of the second air guide plate 320 is separated from the lower end of the front shell 101.

[0037] In both the first and second modes, the active cochlea 230 is in the extended state.

[0038] When switching to the first mode, the movable volute 230 is controlled to extend, the first air guide plate 310 is controlled to guide air to adjust the air guide angle, and the second air guide plate 320 is controlled to avoid air to adjust the air intake angle. At this time, an air guide channel is formed between the first air guide plate 310 and the second air guide plate 320 to jointly constrain the air outlet direction. When the indoor unit of the air conditioner switches to the second mode, the movable volute 230 is controlled to extend, the first air guide plate 310 is controlled to guide air to adjust the air outlet angle, and the second air guide plate 320 is controlled to intake air to be housed in the casing 100. At this time, only the first air guide plate 310 is used to guide the air outlet airflow.

[0039] Optionally, the indoor unit of the air conditioner also includes an indoor heat exchanger disposed between the air duct assembly 200 and the air inlet 120.

[0040] This solution uses the air conditioner indoor unit operating in cooling mode as an example. In this mode, the air outlet 110 is located at the lower end of the casing 100, and the air inlet 120 is located at the upper end of the casing 100. The indoor heat exchanger is used to exchange heat with the air entering the casing 100 through the air inlet 120.

[0041] Optionally, the fan assembly 200 also includes an indoor fan 240. The indoor fan 240 is disposed within the air duct enclosed by the volute 210 and the volute tongue 220. Driven by the indoor fan 240, indoor air flows sequentially through the air inlet 120, the air duct, and the air outlet 110. Optionally, the indoor fan 240 is a cross-flow fan. In this process, the air exchanges heat with the indoor heat exchanger to achieve temperature and humidity regulation.

[0042] Optionally, the movable volute 230 has an extended state near the air inlet 120 and a retracted state away from the air inlet 120. Referring to Figures 5(a), 5(b), 6(a), and 6(b), it can be seen that when the movable volute 230 is in the extended state, it can change the airflow of the indoor unit of the air conditioner at the same fan speed. Specifically, when the movable volute 230 is in the extended state, it can compress the airflow swirling between the movable volute 230 and the impeller of the indoor fan 240 back into the interior of the indoor fan 240. This airflow, together with the airflow entering from the air inlet 120, is then delivered to the air outlet 110 after the impeller of the indoor fan 240 performs work, thereby stabilizing the eccentric vortex structure inside the indoor fan 240 and increasing the airflow volume.

[0043] Furthermore, referring to Figures 5(a), 5(b), 6(a), and 6(b), it can be seen that when the movable volute 230 is in the retracted state, the airflow in the duct generates a large number of airflow vortices at the movable volute 230, resulting in airflow loss. When the movable volute 230 is in the retracted state, the airflow at the movable volute 230 forms a large-scale backflow vortex between the movable volute 230 and the impeller of the indoor fan 240. This part of the airflow cannot effectively participate in the impeller's work process and can only circulate in a local area. This not only consumes the output power of the indoor fan 240 but also reduces the effective airflow in the duct, causing significant airflow loss. At the same time, the mutual shearing action between the backflow vortex and the mainstream airflow also generates additional aerodynamic noise, further affecting the overall quiet operation of the unit.

[0044] Therefore, when the active volute 230 is extended, the air outlet 110 can not only output a larger volume of airflow, but also the airflow has a large initial kinetic energy and can achieve a jet-like circulation along the ceiling under the action of the first air guide plate 310. At this time, the airflow can reach a farther position in the room, achieving long-distance air supply and cooling.

[0045] Furthermore, if there are users within the air supply coverage area of ​​the indoor unit, the indoor unit can be controlled to switch to the first mode, causing the movable volute 230 to be controlled to extend. That is, the movable volute 230 is controlled to move towards the air inlet 120 to a preset extension distance. At this time, the movable volute 230 can effectively block the backflow of airflow at the duct inlet, stabilize the airflow field inside the indoor fan 240, reduce fan operating noise, and improve air supply efficiency.

[0046] Simultaneously, the first air guide plate 310 is controlled to switch to the air guiding state, that is, rotated to a first preset angle; the second air guide plate 320 is controlled to switch to the avoidance state, and the moving end of the second air guide plate 320 rotates towards the first air guide plate 310 to a first preset air guiding angle. At this time, the first air guide plate 310 and the second air guide plate 320 together form an upwardly inclined air guiding channel, thereby guiding the cold air delivered from the air outlet 110 to the area below the ceiling at a large angle of elevation.

[0047] After flowing a certain distance along the ceiling, the cool air reaches the air distribution area. Because cool air is denser than hot air, it naturally settles in the air distribution area under the influence of gravity, thus forming a uniform temperature field from top to bottom. Therefore, this air distribution method makes the cool air gentler by the time it reaches the user's activity area, avoiding the discomfort of direct airflow, while achieving rapid and uniform cooling throughout the house.

[0048] Optionally, the range of the first preset angle is 30° to 45°, and the range of the first preset air intake angle is 20° to 35°.

[0049] Furthermore, if there are no users within the air supply coverage area of ​​the indoor unit, the indoor unit can be switched to the second mode. At this time, the movable volute 230 is also controlled to switch to the extended state to optimize airflow organization in the duct and increase the air delivery distance. Simultaneously, the first air guide plate 310 is controlled to switch to the air guiding state, rotating upwards to a second preset angle so that its upper surface is basically parallel to the ceiling; the second air guide plate 320 is controlled to switch to the air ducting state to be housed within the casing 100, without interfering with airflow.

[0050] At this time, the high-speed airflow delivered from the air outlet 110, under the influence of the Coanda Effect, will adhere to the ceiling surface and flow, rather than diffusing directly downwards. After flowing a considerable distance along the ceiling, the airflow will naturally settle down, thus creating a wraparound airflow effect within the room. This airflow mode enables long-distance air delivery and improves user comfort.

[0051] Optionally, the range of the second preset angle is 50° to 65°.

[0052] In this solution, if there are users within the air supply coverage area of ​​the indoor unit, the first mode will operate; if there are no users within the air supply coverage area, the second mode will operate. This allows for intelligent switching of the appropriate air supply mode based on whether anyone is indoors, ensuring rapid cooling efficiency while avoiding direct cold air blowing on people, thus improving the comfort and intelligence of air conditioning use.

[0053] Optionally, the indoor unit of the air conditioner also includes a human body detection component. The human body detection component is disposed on the outer surface of the housing 100 and is used to detect whether a user is present within the air supply coverage area of ​​the indoor unit. Optionally, the indoor unit also includes a control device. The control device is electrically connected to the human body detection component, the movable volute 230, the first air guide plate 310, the second air guide plate 320, and the indoor fan 240, respectively, and is used to control the operating status of each component based on the detection results of the human body detection component, thereby switching the air supply mode. The human body detection component can employ at least one of an infrared human body sensor, a millimeter-wave radar sensor, and a visual camera; this application does not specifically limit its application to this type.

[0054] By employing the above technical solution, a retractable volute is installed at the air inlet of the duct, in conjunction with a first and second guide vane arranged opposite to each other at the air outlet, enabling independent adjustment and coordinated matching of the duct's airflow characteristics and the airflow direction. When extended, the volute effectively blocks airflow backflow at the duct inlet, stabilizes the eccentric vortex structure inside the fan, and increases the air volume while reducing fan operating noise. When retracted, it adapts to the airflow organization requirements of low-volume operating conditions. The first and second guide vanes, through different angle combinations, can be matched with different extension lengths of the volute to form different airflow modes. When switched to the first mode, the first and second guide vanes together form an upward-facing airflow channel, guiding the airflow upwards to the ceiling area where it naturally settles, preventing cold air from directly blowing on the human body. When switched to the wall-mounted airflow mode, the second guide vane can retract into the duct, with only the first guide vane guiding the airflow along the ceiling for long-distance air delivery. In this way, the needs for rapid temperature adjustment and comfortable air supply can be met, the problem of cold air blowing directly under high air volume can be avoided, and the operating energy consumption and noise can be reduced, thereby improving the performance of the indoor unit of the air conditioner.

[0055] In the above-mentioned optional implementation of the air conditioner indoor unit, the air inlet 120 is located at the upper part of the housing 100, and the air outlet 110 is located at the lower front part of the housing 100; the housing 100 includes a front housing 101, and the volute tongue 220 is disposed close to the front housing 101. The first air guide plate 310 is rotatably disposed at the second end of the volute 210, and the first air guide plate 310 can be controlled to rotate toward or away from the second air guide plate 320; the second air guide plate 320 is rotatably disposed at the air outlet end of the volute tongue 220, and the second air guide plate 320 can be controlled to rotate at least toward the first air guide plate 310.

[0056] Specifically, when the first air guide plate 310 rotates in a direction away from the second air guide plate 320, it separates from the lower end of the front shell 101 and switches to the air guiding state; when the first air guide plate 310 rotates in a direction close to the second air guide plate 320, it connects with the lower end of the front shell 101 and switches to the closed state.

[0057] When the second air guide plate 320 rotates toward the direction close to the first air guide plate 310 to separate from the lower end of the front shell 101, it switches to the air intake state; when the second air guide plate 320 rotates toward the direction away from the first air guide plate 310 to connect with the lower end of the front shell 101, it switches to the avoidance state. At this time, the second air guide plate 320 is housed inside the casing 100.

[0058] Furthermore, the air guiding assembly 300 has at least a first air guiding state and a second air guiding state. In the first air guiding state, the first air guiding plate 310 is in the air guiding state and the second air guiding plate 320 is in the avoidance state; in the second air guiding state, the first air guiding plate 310 is in the air guiding state and the second air guiding plate 320 is in the air induced state.

[0059] The air outlet end of the volute tongue 220 is the end closest to the air outlet 110. The second end of the volute 210 is also the end closest to the air outlet 110, which is the air outlet end of the volute 210.

[0060] Thus, by hingedly arranging the first air guide plate 310 and the second air guide plate 320 at the air outlet positions of the volute 210 and the volute tongue 220 respectively, the air guide assembly 300 can be arranged close to the outlet of the air duct, which can constrain and guide the airflow delivered by the air duct in the first instance, effectively reducing the diffusion and energy loss of the airflow at the air outlet 110, and improving the accuracy of airflow guidance and air delivery efficiency.

[0061] When the air guide assembly 300 switches to the first air guide state, the free ends of both the first air guide plate 310 and the second air guide plate 320 separate from the lower end of the front shell 101 and extend outward from the air outlet 110. The two are arranged relatively parallel or at an angle, together forming an upward-facing air guide channel. This channel can concentrate and constrain the airflow delivered by the duct and guide it upward, so that the airflow flows towards the ceiling area at a stable angle of elevation, avoiding turbulence and downward diffusion of the airflow at the air outlet 110, ensuring that the airflow can smoothly reach the preset air delivery dispersion area and settle naturally, achieving a comfortable cooling effect without direct blowing.

[0062] When the air guide assembly switches to the second air guide state, the moving end 322 of the second air guide plate 320 rotates and retracts into the housing 100, retracting into the space between the volute tongue 220 and the front housing 101. It does not protrude into the flow area of ​​the air outlet 110, thus neither obstructing the air outlet cross-section nor increasing airflow resistance, nor disrupting the airflow profile of the duct. At this time, only the first air guide plate 310 independently completes the airflow guidance. It rotates upward to a preset angle, which can guide the high-speed airflow to flow smoothly along the ceiling surface, making full use of the Coanda effect to achieve long-distance air delivery, so that the cooling capacity can be evenly diffused to every corner of the room.

[0063] The air guide assembly 300 has a compact and reasonable structural layout. The two air guide plates can be controlled independently without interfering with each other, enabling rapid and smooth switching between at least two air guiding states. At the same time, the rotation range of the two air guide plates is reasonably designed, and they can be completely stored inside the housing 100 when not in operation, maintaining the integrity and aesthetics of the air conditioner's appearance. Furthermore, it exhibits low vibration and low noise during operation, and can stably meet the airflow guidance requirements of different air supply modes over a long period of time.

[0064] In this solution, in the first air outlet mode, the movable volute 230 is in the extended state, giving full play to its role in stabilizing the internal flow field of the fan, increasing the air volume, and reducing operating noise, providing sufficient and stable airflow power for comfortable air supply; at the same time, the air guide assembly 300 switches to the first air guide state, and the first air guide plate 310 and the second air guide plate 320 together construct an upward converging air guide channel, which concentrates and guides the cold air to the area below the ceiling and allows it to settle naturally in the preset area, forming a uniform temperature field from top to bottom, avoiding cold air blowing directly on the human body, and ensuring the air supply comfort of the user's activity area.

[0065] In the second air outlet mode, the active volute 230 is also in the extended state to optimize the airflow organization in the duct and ensure that the airflow has sufficient initial kinetic energy to achieve long-distance delivery. At the same time, the air guide assembly 300 switches to the second air guide state, and the second air guide plate 320 is stored inside the housing 100 to avoid interfering with the air outlet airflow. Only the first air guide plate 310 guides the airflow to flow along the ceiling surface, making full use of the Coanda effect to achieve whole-house surround air supply, so that the cooling capacity can be quickly and evenly diffused to every corner of the room, improving the overall temperature control efficiency in the unoccupied state.

[0066] In this way, the 230 active worm gear remains extended in both airflow modes, eliminating the need for frequent switching between extension and retraction, thus extending the lifespan of the components. Simultaneously, the two modes are adapted to typical usage scenarios of both occupied and unoccupied areas, switching according to the presence of people indoors. This ensures rapid temperature adjustment while maximizing airflow comfort and guaranteeing a superior user experience.

[0067] In the optional implementation of the above-mentioned air conditioner indoor unit, when the free end of the first air guide plate 310 and the moving end 322 of the second air guide plate 320 are both connected to the lower end of the front shell 101, the air outlet 110 is in a closed state.

[0068] At this time, the first air guide plate 310 is in the closed state, the second air guide plate 320 is in the avoidance state, and the air outlet 110 is in the closed state.

[0069] Thus, when the indoor unit of the air conditioner is off, the first air guide plate 310 rotates to the closed state, with its free end tightly fitted against the lower end of the front casing 101, completely blocking the air outlet 110. This effectively prevents dust, hair, and other debris from entering the air duct, avoiding dust accumulation on the surfaces of the indoor heat exchanger and indoor fan 240, which could lead to decreased heat exchange efficiency and poor air quality. It also reduces the frequency of cleaning and maintenance inside the air duct. At this time, the second air guide plate 320 simultaneously rotates to the avoidance state, with its moving end 322 tightly abutting against the lower end of the front casing 101 to avoid collision or scratching with the first air guide plate 310.

[0070] In the optional implementation of the above-mentioned air conditioner indoor unit, a mounting part is formed at the first end near the volute 210, and the movable volute tongue 230 is slidably connected, telescopically connected, or rotatably connected to the mounting part.

[0071] Optionally, the housing 100 also includes a rear housing 102, which is arranged opposite to the front housing 101.

[0072] Optionally, the mounting section can be formed at the first end of the volute 210. When the mounting section is formed at the first end of the volute 210, the movable volute 230 is directly integrated with the volute 210, resulting in high precision in their fit. This effectively ensures the uniformity of the gap between the movable volute 230 and the sidewall of the volute 210, reduces airflow leakage at the duct connection, and improves the accuracy of airflow regulation. Simultaneously, this configuration allows the movable volute 230 and the volute 210 to form a single module, facilitating pre-assembly during production, simplifying the final assembly process, and improving production efficiency.

[0073] At this time, the movable volute 230 is slidably disposed on the inner wall surface of the volute 210; or, the movable volute 230 is slidably disposed on the outer wall surface of the volute 210; or, the movable volute 230 is slidably inserted into the interior of the volute 210.

[0074] Specifically, the movable volute 230 is slidably mounted on the inner wall of the volute 210. In this way, the movable volute 230 can directly conform to the airflow area inside the duct for position adjustment, directly intervening in the duct's cross-section and airflow direction. This results in more direct and efficient adjustment of airflow convergence and guidance, minimizing turbulence and backflow within the duct and further stabilizing the internal flow field of the fan. Simultaneously, the inner wall sliding installation layout is compact, does not occupy the installation space outside the volute 210, and avoids structural interference with other components inside the housing 100. The assembly layout is more rational, and since the movable volute 230 is in direct contact with the airflow, its deformation and positional offset are small, resulting in better stability during long-term reciprocating sliding operation. This effectively ensures the actual effects of airflow regulation, noise reduction, and airflow guidance under different operating conditions.

[0075] Alternatively, the movable volute 230 is slidably mounted on the outer wall of the volute 210. In this way, the movable volute is positioned entirely outside the air duct, away from areas with high-speed airflow, making it less susceptible to vibration and wear from airflow impact, resulting in a longer service life and easier daily maintenance and disassembly. Furthermore, this configuration does not occupy internal airflow space, maximizing the airflow area and reducing airflow resistance. Simultaneously, the drive mechanism can be externally mounted, facilitating wiring and transmission debugging, and improving overall operational reliability.

[0076] Alternatively, the movable volute 230 can be slidably inserted into the interior of the volute 210. In this way, the movable volute can be completely concealed and stored, seamlessly integrating with the volute 210 in the retracted state. The inner wall of the air duct is smooth and flat, with no protruding structures disrupting the airflow direction, resulting in extremely low airflow loss. When the movable volute 230 is switched to the extended state, it slides out from inside the volute 210, exhibiting high integration, a neat overall appearance and internal air duct layout, and higher space utilization.

[0077] To improve the stability of the movement of the movable volute 230, a guide assembly can be provided. The guide assembly includes a guide groove and a guide block / guide strip. The guide groove and the guide block / guide strip cooperate with each other. One of the guide groove and the guide block / guide strip is located in the movable volute 230, and the other of the guide groove and the guide block / guide strip is located in the volute housing 210.

[0078] Optionally, since an indoor heat exchanger is also provided between the fan assembly 200 and the air inlet 120, a drip tray needs to be provided below the indoor heat exchanger near the rear casing 102 to collect the condensate from the indoor heat exchanger. The drip tray is located near or abuts against the first end of the volute 210. In this case, a mounting portion can be formed on the side wall of the drip tray, which is also near or abuts against the first end of the volute 210. When the mounting portion is formed on the side wall of the drip tray, the unused gap space below the indoor heat exchanger and between the drip tray and the first end of the volute 210 can be fully utilized, eliminating the need for additional mounting structures on the volute body, avoiding damage to the integrity of the inner wall of the volute duct, and ensuring the smoothness of the duct flow surface. As an essential component of the air conditioning indoor unit, the drip tray itself has sufficient structural strength to provide stable installation support for the movable volute 230, improving the utilization rate of components and reducing the cost and space occupation of additional mounting brackets. In addition, the water receiving tray is tightly abutted against the first end of the volute 210. After the movable volute 230 is installed on the side wall of the water receiving tray, it can form a good sealing fit with the inlet of the volute 210, effectively blocking the backflow of airflow at the air duct inlet, and ensuring that the movable volute can stably play its role in stabilizing the flow field and increasing the air volume.

[0079] The movable volute 230 is slidably connected, retractably connected, or rotatably connected to the mounting part. Thus, through this flexible design employing multiple connection methods, the most suitable mounting configuration of the movable volute 230 can be selected based on the internal space layout of the housing 100, the selection of the drive mechanism, and performance requirements. All configurations reliably enable the movable volute 230 to switch between its extended state near the air inlet 120 and its retracted state away from the air inlet 120, ensuring the stable operation of the airflow regulation function.

[0080] For example, when a sliding connection is used, a gear may be provided on the mounting part, and a rack that cooperates with the gear may be formed on the movable worm tongue 230.

[0081] Alternatively, the mounting section can be configured as a groove or guide rail structure extending along the first end of the volute 210, with the movable volute 230 correspondingly provided with a sliding section that cooperates with the groove or guide rail, allowing the movable volute 230 to slide back and forth in a straight line. This results in high positioning accuracy, precise stroke control, and continuous stepless adjustment of the extension distance of the movable volute 230, facilitating matching the airflow organization requirements of the duct under different working conditions. Furthermore, the sliding process is smooth and stable with low operating noise.

[0082] When a telescopic connection is used, the mounting part formed in the movable volute 230 can be designed as a multi-level nested telescopic sleeve structure, or it can be directly connected to the mounting part through telescopic drive components such as electric push rods or pneumatic push rods. This connection method has a compact structure, occupies little internal space in the volute 210, can achieve a large telescopic stroke in a limited installation space, and has a rapid telescopic response, few transmission links, and high operational reliability. It is suitable for small wall-mounted air conditioner indoor units with relatively limited internal space.

[0083] When a swivel connection is used, one end of the movable volute 230 is swivelly connected to the mounting part via a hinge shaft, while the other end is driven by a drive mechanism to rotate around the hinge shaft. The extension and retraction states are switched by changing the rotation angle. This connection method has the simplest structure, fewer parts, lower assembly difficulty, and lower manufacturing cost. Furthermore, the swivel connection has good sealing performance, effectively reducing airflow leakage at the duct connection. It is suitable for air conditioning indoor units that only need to switch between two fixed states: extension and retraction.

[0084] In the optional implementation of the above-mentioned air conditioner indoor unit, the movable volute 230 is slidably connected to the mounting part.

[0085] In the above-mentioned optional implementation scheme of the air conditioner indoor unit, combined with Figure 7 As shown, the air duct assembly 300 also includes a drive mechanism, which includes a drive motor 410, a transmission gear 420, and a sliding rack 430. The drive motor 410 is installed inside the housing 100; the transmission gear 420 is connected to the output shaft of the drive motor 410; the sliding rack 430 is located on the movable volute 230 and meshes with the transmission gear 420; the drive motor 410 drives the movable volute 230 to move towards or away from the air inlet 120 through the meshing of the transmission gear 420 and the sliding rack 430, thereby adjusting the length of the movable volute 230.

[0086] In this solution, the movable worm 230 can be smoothly driven to complete linear reciprocating movement through the cooperation of the drive motor 410, transmission gear 420 and sliding rack 430. The action response is fast and the positioning accuracy is high. The movable worm 230 can be stably adjusted to the preset extension distance to ensure smooth switching between the extension state and the retracted state. The overall transmission structure is compact and suitable for the narrow installation space inside the air conditioner. It has low vibration and low noise during operation and can achieve controllable adjustment of the airflow state of the duct for a long time. It provides stable structural power support for the reliable switching of the two air supply modes.

[0087] Optionally, two end plates are provided along the length of the housing 100, and the end plates and the housing 100 together enclose a receiving cavity. The receiving cavity houses the fan assembly 200 and the indoor heat exchanger. The sliding rack can be provided on the side of the two end plates facing each other to facilitate the driving of the movable volute 230.

[0088] Secondly, this application provides a control method for an air conditioner indoor unit, applied to the aforementioned air conditioner indoor unit; combined with Figure 8 As shown, the control methods include: S81, determine whether there is a user indoors, and if there is a user indoors, obtain the user's location information, indoor ambient temperature and outdoor ambient temperature.

[0089] S82 determines the target air supply area based on the user's location information.

[0090] S83 determines the target cooling rate based on the temperature difference between the indoor ambient temperature and the set temperature of the indoor unit of the air conditioner.

[0091] S84, based on the target air supply area, target cooling rate, indoor ambient temperature and outdoor ambient temperature, determine and execute the target air supply parameters of the indoor air conditioning unit. The target air supply parameters include at least the extension distance of the movable volute, the rotation angle of the first air guide plate and the air guiding angle of the second air guide plate.

[0092] In this plan, determining whether there are users indoors refers to whether there are users in the air supply coverage area of ​​the indoor air conditioning unit.

[0093] When there are users in the air supply coverage area of ​​the indoor unit of the air conditioner, the operating mode of the indoor unit can be switched to avoid direct airflow onto the users.

[0094] Furthermore, by obtaining user location information, the target air supply area corresponding to the airflow of the indoor unit of the air conditioner can be determined, thereby adapting to the user's location.

[0095] Furthermore, based on the temperature difference between the indoor ambient temperature and the set temperature, the corresponding target cooling rate can be determined. A larger temperature difference allows for a faster temperature adjustment, while a smaller difference allows for a more gradual temperature adjustment.

[0096] Furthermore, by combining the target air supply area, target cooling rate, and indoor and outdoor ambient temperature information, the extension distance of the active volute, the rotation angle of the first air guide plate, and the air intake angle of the second air guide plate can be determined and adjusted, while the relevant operating parameters of the indoor air conditioning unit can be determined and adjusted.

[0097] The target air supply area refers to the area where the airflow from the air outlet of the indoor unit of the air conditioner begins to naturally sink and change its flow direction after flowing for a certain distance. This location serves as the dividing point where the airflow changes from high-level flow to downward diffusion.

[0098] This control method can dynamically adjust based on the user's location and ambient temperature. By extending the movable volute, it changes the airflow state and output air volume in the duct, adapting to the air supply needs under different working conditions. It relies on the air guide component to change the direction of airflow delivery, allowing the airflow to naturally settle in the corresponding area. While completing the indoor temperature regulation, it weakens the discomfort caused by direct airflow, taking into account the equipment's temperature adjustment speed, operating noise performance, and overall indoor air supply experience, thus improving the overall intelligent control effect of the equipment.

[0099] Optionally, the indoor unit of the air conditioner is equipped with a human body detection component. The human body detection component may employ at least one of an infrared human body sensor, a millimeter-wave radar sensor, and a visual camera; this application does not specifically limit its application to this type.

[0100] The user's location information can be determined by obtaining the distance between the user's location and the installation surface of the air conditioner's indoor unit.

[0101] Alternatively, the user's location information can be determined in the following ways: The air supply coverage area of ​​the indoor unit of the air conditioner is obtained and divided into multiple planar grids. Table 1 shows the planar grid layout. The planar grids can be numbered, and each grid is matched with corresponding location information, including the distance between the grid center and the mounting surface of the indoor unit. Based on the grid number where the user is located, the distance between the grid center and the mounting surface of the indoor unit can be determined, thus identifying the user's location.

[0102] If a user's location is at the intersection of two or more grids, the average of the center locations of the multiple grids is used as the user's location information.

[0103] Table 1

[0104] Furthermore, given the user's location information, the target air delivery area for the indoor unit of the air conditioner can be determined.

[0105] Furthermore, given a defined target air supply area and target cooling rate, and considering both indoor and outdoor ambient temperatures, the extension distance of the movable volute, the rotation angle of the first air guide plate, the air intake angle of the second air guide plate, and the operating parameters of the indoor air conditioning unit are determined. This allows for corresponding adjustments to the air supply status based on the location of people and changes in ambient temperature, controlling the airflow volume and direction of the duct, ensuring that the airflow settling area aligns with the area where people are active. While meeting the needs for space temperature regulation, this avoids the discomfort caused by direct airflow and adapts to the air supply requirements of different indoor environments.

[0106] Optionally, the operating parameters of the indoor unit of the air conditioner include equipment operating parameters such as indoor fan speed and compressor frequency, which are adjusted synchronously according to the actual usage scenario to make the airflow inside the duct more stable, and can also be used in conjunction with the air guide structure to optimize the indoor air circulation effect.

[0107] When the above technical solution is adopted, the first mode is activated upon detecting a user. The target air supply area is determined using the user's location information, matching the air supply settling position with the user's location to avoid direct cold air blowing. Simultaneously, the target cooling rate is determined based on the temperature difference between the actual indoor temperature and the set temperature. This, combined with the indoor and outdoor ambient temperatures, determines the extension distance of the active volute, the air guiding angle of the first air guide plate, the air diversion angle of the second air guide plate, and the operating parameters of the indoor air conditioning unit. This achieves coordinated control of air supply parameters and operating parameters, improving comfort while reducing energy consumption.

[0108] In an optional implementation of the above-mentioned control method for the indoor unit of an air conditioner, determining the target air supply area based on the user's location information includes: The user distance is determined based on the user's location information. The user distance is the straight-line distance between the user and the installation surface of the indoor unit of the air conditioner. The target air supply area is determined based on the user distance. The first boundary of the target air supply area is not greater than the user distance, and the second boundary of the target air supply area is greater than the user distance. The first boundary is the closest boundary of the target air supply area relative to the indoor unit of the air conditioner, and the second boundary is the farthest boundary of the target air supply area relative to the indoor unit of the air conditioner.

[0109] The first boundary is less than or equal to the user distance. The second boundary is the sum of the user distance and the preset distance. The preset distance ranges from 0.1m to 0.5m.

[0110] Thus, based on the collected user location coordinates, the area is determined, and then the first mode is determined, selecting the user location and the area below the ceiling above the user location and forward at a preset distance along the air outlet direction as the target air supply area.

[0111] In addition, the preset distance range is 0.1m to 0.5m. This range is moderate, which allows the delivered airflow to diffuse and buffer naturally over a distance before settling downwards, reducing the chance of the airflow blowing directly on the human body. It also allows the cooling airflow to smoothly cover the area where people are active, which helps to improve the comfort of the air supply.

[0112] The user distance can be determined based on a human detection component. This component can acquire the angle between the user's location and itself, and / or the distance between the user's location and itself, thereby determining the user's coordinates. This, in turn, allows for the determination of the distance between the user and the indoor unit of the air conditioner.

[0113] In an optional implementation of the above-mentioned control method for the indoor unit of an air conditioner, if there are multiple users in the indoor space, determining the distance to the users based on their location information includes: The distance between users is determined based on the center location of the regions where multiple users are located.

[0114] Therefore, when multiple users are present indoors, the location coordinates of each user are collected one by one, and then the geometric center formed by the convergence of all coordinates is determined. This center serves as a reference for the core area where multiple users are active. The area below the ceiling above this center and at corresponding distances along the airflow direction is selected as the airflow settling point. This allows the dispersed airflow to evenly cover the area occupied by most people, taking into account the comfort needs of different individuals. It avoids situations where a single settling point only suits a single person's location, resulting in weak airflow or direct airflow in some areas. This leads to a more balanced overall indoor temperature distribution and improved comfort.

[0115] In an optional implementation of the above-mentioned control method for the indoor unit of an air conditioner, the extension distance of the movable volute, the rotation angle of the first air guide plate, the air-guiding angle of the second air guide plate, and the operating parameters of the indoor unit of the air conditioner are determined based on the target air supply area, the target cooling rate, the indoor ambient temperature, and the outdoor ambient temperature, including: The target air supply area, target cooling rate, indoor ambient temperature, and outdoor ambient temperature are input into the pre-trained prediction model, and the target air supply parameters of the indoor air conditioning unit are output and determined.

[0116] The operating parameters of the indoor unit of an air conditioner include at least the speed of the indoor fan, the operating power, and the power of the compressor.

[0117] In the optional implementation of the above-mentioned control method for the indoor unit of the air conditioner, the input layer of the prediction model includes at least the target air supply parameters, the outdoor ambient temperature and the indoor ambient temperature, and the output layer of the prediction model includes at least the target air supply area, the target temperature drop rate and the operating power of the indoor unit of the air conditioner. The target air supply area, target cooling rate, indoor ambient temperature, and outdoor ambient temperature are input into a pre-trained prediction model, which outputs and determines the operating parameters of the indoor air conditioning unit, including: Input the target air supply area, target cooling rate, indoor ambient temperature and outdoor ambient temperature into the prediction model and perform inverse solution to obtain multiple sets of air supply parameters under different operating power. The operating parameters corresponding to the minimum operating power are used as the target air supply parameters.

[0118] In this solution, the pre-trained prediction model is a machine learning model trained on a large amount of historical experimental data. The model takes the target air supply area, target cooling rate, indoor ambient temperature, and outdoor ambient temperature as input features, and the extension distance of the active volute, the rotation angle of the second air guide plate, the rotation angle of the first air guide plate, and the indoor fan speed as outputs. By combining the prediction model with a genetic algorithm to solve for the inverse parameters, adaptive matching of the air supply structure parameters and the overall unit operating parameters can be achieved. This allows the airflow pattern and air supply distance of the air conditioner to adapt to the actual indoor usage scenario, satisfying the space temperature control requirements while optimizing indoor airflow organization and reducing overall unit energy consumption.

[0119] It should be noted that the pre-trained prediction model employs at least three fully connected neural networks. The input layer has at least four neurons to correspond to the input target air supply area, target cooling rate, indoor ambient temperature, and outdoor ambient temperature. The output layer has at least four neurons to correspond to the output of the active volute extension distance, the rotation angle of the second air guide plate, the rotation angle of the first air guide plate, and the indoor fan speed. The model's training dataset contains over 100,000 sets of historical operational experimental data for different indoor air supply scenarios. Each set of data includes input features and corresponding adaptive air supply parameter labels, and the training iterations are at least a thousand.

[0120] Specifically, the processing of the prediction model in this scheme is divided into three stages: parameter acquisition, model training, and model application.

[0121] During the parameter acquisition phase, the target air supply area, target cooling rate, indoor ambient temperature, and outdoor ambient temperature are key factors affecting the extension distance of the active volute, the rotation angle of the second air guide plate, the rotation angle of the first air guide plate, and the indoor fan speed. Therefore, these key parameters must be comprehensively collected during the parameter acquisition phase. During air conditioning operation, the target air supply area and target cooling rate corresponding to the current scenario are determined by the detection components. At the same time, the real-time indoor and outdoor ambient temperatures are collected using temperature sensing components, and the collected parameters are substituted into the model.

[0122] In other words, during the model training phase, the model's inputs are the target air supply area, the target cooling rate, the indoor ambient temperature, and the outdoor ambient temperature, while the outputs are the extension distance of the active volute, the rotation angle of the second air guide plate, the rotation angle of the first air guide plate, and the indoor fan speed.

[0123] Since the model is a multiple-input multiple-output problem, this application uses a neural network model to achieve the above functions. Massive and diverse data, covering different air supply discrete points, different cooling rates, different indoor and outdoor temperature environments, and suitable air supply structures and fan operating parameters, are sent to the model via a network transmission protocol.

[0124] The core objective of model training is to establish the mapping relationship between the target air supply area, target cooling rate, indoor ambient temperature, outdoor ambient temperature, the extension distance of the active volute, the rotation angle of the second air guide plate, the rotation angle of the first air guide plate, and the speed of the indoor fan.

[0125] In practical applications, based on Table 2, the basic requirements for the distance of the jet separation point and the temperature drop rate are determined according to the aforementioned process. Then, constraints are established by combining the real-time room temperature feedback value and the outdoor ambient temperature monitoring value. The trained neural network model is then subjected to reverse solving using a genetic algorithm. After the calculation, multiple sets of parameters that meet all usage constraints are obtained, including the volute extension distance, indoor fan speed, air guide angle of the second air guide plate, and air guide angle of the first air guide plate. Finally, the set with the lowest overall operating power is selected from all the parameter combinations that meet the requirements as the operating parameters of the air conditioning indoor unit.

[0126] When the air conditioner operates according to these parameters, the cool air delivered by the indoor unit flows smoothly along the ceiling surface. Upon reaching the target airflow area where people are located, it naturally settles to complete the cooling operation. While avoiding the discomfort caused by direct cold air blowing, it adjusts the temperature of the people's activity area to the set value, and the temperature of the rest of the room is regulated by the natural diffusion of cool air. This settling cooling mode not only improves indoor airflow comfort but also effectively reduces the overall power consumption of the unit.

[0127]

[0128] Combination Figure 9 As shown, the target cooling rate is determined based on the temperature difference between the indoor ambient temperature and the set temperature of the air conditioner indoor unit, including: S91, if the indoor ambient temperature Tin is greater than or equal to the sum of the target temperature Tn and the preset temperature T' of the indoor unit of the air conditioner, then the target cooling rate V is determined to be within the first rate range.

[0129] S92, if the indoor ambient temperature Tin is less than the sum of the target temperature Tn and the preset temperature T' of the indoor unit of the air conditioner, then the target cooling rate V is determined to be within the range of the second rate.

[0130] S93, when ΔT is less than the preset temperature difference and greater than 0℃, the target cooling rate V is determined to be within the second rate range.

[0131] Among them, the minimum threshold of the first rate range is greater than the maximum threshold of the second rate range.

[0132] Optionally, the preset temperature difference is 1℃ to 5℃. Preferably, the preset temperature difference is 3℃.

[0133] Optionally, the first rate range is (0.5, 0.7); the second rate range is (0.3, 0.5).

[0134] Thus, by using the sum of the indoor ambient temperature and the set temperature plus the preset temperature as a threshold to divide the cooling rate, a better balance can be achieved between rapid cooling and stable temperature control. When the indoor ambient temperature is greater than or equal to the sum of the set temperature and the preset temperature, the first rate range of (0.5, 0.7)℃ / min is used to adjust the temperature, accelerating the overall temperature drop and shortening the time to reach the set temperature. When the indoor ambient temperature is less than the sum of the set temperature and the preset temperature but greater than the set temperature, the second rate range of (0.3, 0.5)℃ / min is switched to allow the room temperature to drop gradually, avoiding excessively high temperatures and large fluctuations. This tiered setting method has clear logic and simple control implementation. It can coordinate with subsequent adjustments to parameters such as the extension distance of the volute, the rotation angle of the first air guide plate, the air intake angle of the second air guide plate, and the indoor fan speed. While ensuring temperature adjustment efficiency, it helps maintain the stability of the indoor temperature, and the rate of temperature change is within the human body's tolerance range for temperature changes, preventing discomfort caused by excessively rapid temperature changes. It also helps reduce the energy consumption of the air conditioner.

[0135] The cooling rate is related to operating parameters such as the indoor fan speed and compressor frequency. In this scheme, when the target cooling rate V is within the first rate range (0.5~0.7℃ / min), the indoor fan can be controlled to operate at a medium-high speed (e.g., 800~1200rpm), while the compressor operating frequency is increased (e.g., 70~90Hz) to improve heat exchange efficiency and achieve rapid cooling. When the target cooling rate V is within the second rate range (0.3~0.5℃ / min), the indoor fan speed is reduced to a medium-low speed (e.g., 500~700rpm), and the compressor frequency is appropriately reduced (e.g., 40~60Hz) to ensure a smoother cooling output and avoid a sudden temperature drop.

[0136] Furthermore, the refrigerant flow can be adjusted by controlling the opening of the electronic expansion valve to ensure that the actual cooling rate remains stable within the target range. Through the linkage of these parameters, the preset cooling rate can be precisely matched at different stages, further improving the smoothness of temperature control and energy efficiency.

[0137] For example, referring to Table 2, if the distance between the user's room and the indoor unit of the air conditioner is 2.5m, the target air supply area is determined to be (2.5, 2.85). The indoor ambient temperature is 30℃, which is higher than the set temperature of 22+3℃. At this time, the indoor temperature needs to drop rapidly, and the temperature drop rate range is the first cooling rate (0.5, 0.7). Therefore, ① the target air supply area is (2.5, 2.85); ② the temperature drop rate range is (0.5, 0.7). Using these two conditions, along with the indoor and outdoor ambient temperatures, as the solution conditions, we can reverse-engineer the combination of input layer parameters that satisfy these two conditions. Specifically, the indoor temperature feedback value needs to be 30℃ and the outdoor temperature monitoring value needs to be 35℃. During the reverse-engineering process, multiple sets of parameter combinations that satisfy the conditions will be obtained. Then, the set with the lowest operating power of the indoor unit among these parameter combinations will be selected as our final solution. For example, the extension distance of the active volute is 2mm, the indoor fan speed is 700rpm, the rotation angle of the second air guide plate is 10°, and the rotation angle of the first air guide plate is 20°.

[0138] Thirdly, this application provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor enters the program execution state, it implements the control method described above.

[0139] Fourthly, this application provides an air conditioner, including a control device or an electronic device as described above, wherein the control device is configured with a control program for the control method of the air conditioner indoor unit as described above.

[0140] The sequence numbers of the above embodiments of the present invention are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0141] In the above embodiments of the present invention, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0142] In the embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. The device embodiments described above are merely illustrative; for example, the division of units can be a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not included. Furthermore, the displayed or discussed mutual coupling, direct coupling, or communication connection may be through some interfaces; the indirect coupling or communication connection of units or modules may be electrical or other forms.

[0143] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0144] Furthermore, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0145] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to enter all or part of the steps of the control methods of various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, read-only memory (ROM), random access memory (RAM), portable hard drives, magnetic disks, or optical disks.

[0146] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. An indoor unit for an air conditioner, characterized in that, include: The housing has an air inlet and an air outlet that are arranged opposite to each other. An air duct assembly is disposed within the housing. The air duct assembly includes at least a volute, a volute tongue, and a movable volute throat. The volute and the volute tongue are arranged opposite to each other and define an air outlet duct. A first end of the volute is close to the air inlet, and a second end of the volute extends to the air outlet. The movable volute throat is disposed at the first end. The movable volute throat has an extended state close to the air inlet and a retracted state away from the air inlet. The air guiding assembly includes at least a rotatable first air guiding plate and a rotatable second air guiding plate, both of which are disposed at the air outlet; wherein the first air guiding plate is close to the volute, the second air guiding plate is close to the volute tongue, and the second air guiding plate can cooperate with the first air guiding plate to form different air guiding states. The air duct assembly and the air guide assembly are configured such that different extension lengths of the movable volute are coordinated with different air guiding states of the air guide assembly to form different air outlet modes of the indoor unit of the air conditioner.

2. The indoor unit of the air conditioner according to claim 1, characterized in that, The air inlet is located at the upper part of the housing, and the air outlet is located at the lower front part of the housing; the housing includes a front shell, and the volute tongue is disposed close to the front shell; The first air guide plate is rotatably disposed at the second end of the volute, and the first air guide plate can be controlled to rotate toward or away from the second air guide plate; The second air guide plate is rotatably disposed at the air outlet end of the volute tongue, and the second air guide plate can be controlled to rotate at least in the direction close to the first air guide plate.

3. The indoor unit of the air conditioner according to claim 2, characterized in that, When the free end of the first air guide plate and the moving end of the second air guide plate are both connected to the lower end of the front shell, the air outlet is in a closed state.

4. The indoor unit of the air conditioner according to claim 1, characterized in that, A mounting portion is formed at the first end near the volute, and the movable volute is slidably connected, telescopically connected, or rotatably connected to the mounting portion.

5. The indoor unit of the air conditioner according to claim 4, characterized in that, The movable worm gear is slidably connected to the mounting part.

6. The indoor unit of the air conditioner according to claim 1, characterized in that, The air duct assembly further includes a drive mechanism, the drive mechanism comprising: A drive motor is installed inside the housing; The transmission gear is connected to the output shaft of the drive motor. A sliding rack is provided on the movable worm gear and meshes with the transmission gear; The drive motor drives the movable volute to move closer to or further away from the air inlet through the meshing of the transmission gear and the sliding rack, so as to adjust the length of the movable volute.

7. A control method for an indoor unit of an air conditioner, characterized in that, Applied to an indoor air conditioning unit as described in any one of claims 1 to 6; the control method includes: Determine if there are users indoors; if so, obtain user location information, indoor ambient temperature, and outdoor ambient temperature. Based on the user location information, the target air supply area is determined; The target cooling rate is determined based on the temperature difference between the indoor ambient temperature and the set temperature of the indoor unit of the air conditioner. Based on the target air supply area, the target cooling rate, the indoor ambient temperature, and the outdoor ambient temperature, the target air supply parameters of the indoor air conditioning unit are determined and executed. The target air supply parameters include at least the extension distance of the movable volute, the rotation angle of the first air guide plate, and the air guiding angle of the second air guide plate.

8. The control method according to claim 7, characterized in that, Determining the target air supply area based on the user's location information includes: The user distance is determined based on the user location information, where the user distance is the straight-line distance of the user relative to the installation surface of the indoor unit of the air conditioner; The target air supply area is determined based on the user distance. The first boundary of the target air supply area is not greater than the user distance, and the second boundary of the target air supply area is greater than the user distance. The first boundary is the closest boundary of the target air supply area relative to the indoor unit of the air conditioner, and the second boundary is the farthest boundary of the target air supply area relative to the indoor unit of the air conditioner.

9. The control method according to claim 8, characterized in that, If there are multiple users in the indoor space, the distance between users is determined based on the user location information, including: The distance between users is determined based on the center location of the areas where the multiple users are located.

10. The control method according to claim 8, characterized in that, The step of determining the target air supply parameters of the indoor unit of the air conditioner based on the target air supply area, the target cooling rate, the indoor ambient temperature, and the outdoor ambient temperature includes: The target air supply area, the target cooling rate, the indoor ambient temperature, and the outdoor ambient temperature are input into the pre-trained prediction model, and the target air supply parameters of the indoor air conditioning unit are output and determined.

11. The control method according to claim 10, characterized in that, The input layer of the prediction model includes at least the target air supply parameters, the outdoor ambient temperature, and the indoor ambient temperature, and the output layer of the prediction model includes at least the target air supply area, the target temperature drop rate, and the operating power of the indoor air conditioning unit. The target air supply area, the target cooling rate, the indoor ambient temperature, and the outdoor ambient temperature are input into a pre-trained prediction model, which outputs and determines the operating parameters of the indoor unit of the air conditioner, including: The target air supply area, the target cooling rate, the indoor ambient temperature, and the outdoor ambient temperature are input into the prediction model and solved in reverse to obtain multiple sets of air supply parameters under different operating power. The operating parameters corresponding to the minimum operating power are taken as the target air supply parameters.

12. The control method according to claim 7, characterized in that, Determining the target cooling rate based on the temperature difference between the indoor ambient temperature and the set temperature of the indoor unit of the air conditioner includes: If the indoor ambient temperature Tin is greater than or equal to the sum of the target temperature Tn and the preset temperature T' of the indoor unit of the air conditioner, then the target cooling rate V is determined to be within the first rate range. If the indoor ambient temperature Tin is less than the sum of the target temperature Tn and the preset temperature T' of the indoor unit of the air conditioner, then the target cooling rate V is determined to be within the second rate range. Wherein, the minimum threshold of the first rate range is greater than the maximum threshold of the second rate range.

13. The control method according to any one of claims 7 to 12, characterized in that, When there are no users indoors, the active volute is controlled to be in the extended state, the free end of the first air guide plate is controlled to connect with the front shell of the housing, and the free end of the second air guide plate is controlled to separate from the front shell of the housing.

14. An electronic device, characterized in that, It includes a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, it implements the control method as described in any one of claims 7 to 13.

15. An air conditioner, characterized in that, It includes a control device or an electronic device as described in claim 14, wherein the control device is configured with a control program for the control method of an air conditioner as described in any one of claims 7 to 13.

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