Air conditioner indoor unit, air conditioner and control method thereof

Abstract

The application provides an air conditioner indoor unit, an air conditioner and a control method thereof. The air conditioner indoor unit comprises a shell, a wind channel is formed in the shell, and an air inlet and an air outlet are arranged at two ends of the wind channel respectively; a first cross-flow fan is arranged in the wind channel; an indoor heat exchanger comprises a first pipe section, a second pipe section and a third pipe section which are sequentially communicated and the distances from the first cross-flow fan are sequentially increased, and the first pipe section, the second pipe section and the third pipe section are all arranged in the wind channel; an airflow diverter is arranged at the air inlet and is used for guiding part of air blown to the first pipe section into the second pipe section and / or the third pipe section; a first temperature sensor is arranged at the first pipe section, a second temperature sensor is arranged at the second pipe section, and a controller is arranged. The air conditioner indoor unit provided by the application can accurately control the rotating speed of the airflow diverter by detecting the temperatures at the first pipe section and the second pipe section, and the accurate adjustment of the air volume distribution in the wind channel is realized.

Description

Technical Field

[0001] This invention relates to the field of air conditioner technology, and in particular to an indoor air conditioner unit, an air conditioner, and a control method thereof. Background Technology

[0002] In the design of air conditioning indoor units, cross-flow fans are widely used due to their unique airflow transmission method. However, due to the suction characteristics of cross-flow fans, the air volume passing through some sections of the heat exchanger is relatively large, resulting in excessively fast airflow velocity. This uneven airflow distribution leads to reduced heat exchange efficiency in some sections, thus affecting the overall performance and energy efficiency of the air conditioner.

[0003] Traditional air conditioner indoor unit designs face significant challenges in controlling the uniformity of airflow across the heat exchanger tubes. Due to uneven airflow velocity, the airflow is excessive in tube sections closer to the cross-flow fan, resulting in low heat exchange efficiency at those locations. This means some tube sections fail to receive sufficient cooling or heating, thus affecting the air conditioner's cooling or heating performance. This not only reduces the air conditioner's efficiency but also increases energy consumption, ultimately impacting its performance. Summary of the Invention

[0004] This invention aims to solve at least one of the technical problems existing in related technologies. To this end, this invention proposes an indoor air conditioning unit, an air conditioner, and a control method thereof, which solves the problem of uneven airflow velocity in existing air conditioners, which prevents some pipe sections from being adequately cooled or heated, thereby affecting the cooling or heating effect of the air conditioner.

[0005] An indoor air conditioning unit according to a first aspect embodiment of the present invention includes:

[0006] The shell has an air duct, and the two ends of the air duct are respectively provided with an air inlet and an air outlet;

[0007] A first cross-flow fan is installed in the air duct;

[0008] The indoor heat exchanger includes a first pipe section, a second pipe section, and a third pipe section that are connected in sequence and whose distance from the first cross-flow fan increases in sequence. The first pipe section, the second pipe section, and the third pipe section are all arranged in the air duct.

[0009] An airflow splitter, located at the air inlet, is used to direct a portion of the air blown into the first pipe section to the second pipe section and / or the third pipe section;

[0010] The system comprises a first temperature sensor, a second temperature sensor, and a controller. The first temperature sensor is disposed in the first pipe section, the second temperature sensor is disposed in the second pipe section, and the controller is electrically connected to the airflow splitter, the first temperature sensor, and the second temperature sensor to control the rotation speed of the airflow splitter by detecting the temperature, thereby adjusting the airflow in the first pipe section, the second pipe section, and the third pipe section.

[0011] According to one embodiment of the present invention, the airflow splitter includes: a second cross-flow fan, a guide plate, and a drive mechanism;

[0012] The second cross-flow fan is disposed at the air inlet, and the guide plate is shielded on one side of the second cross-flow fan. The guide plate extends outward from the air inlet at an angle. The drive mechanism is electrically connected to the controller, and the drive end of the drive mechanism is connected to the second cross-flow fan to guide a portion of the air blown into the first pipe section into the second pipe section and / or the third pipe section.

[0013] According to one embodiment of the present invention, the air inlet is provided with a first flow-dividing zone and a second flow-dividing zone, the first pipe section corresponds to the first flow-dividing zone, and the second pipe section corresponds to the second flow-dividing zone; the second cross-flow fan and the guide plate are disposed in the first flow-dividing zone, and the guide plate extends obliquely from the first flow-dividing zone of the air inlet outward and toward the second flow-dividing zone.

[0014] An air conditioner provided according to a second aspect of the present invention includes: the above-described air conditioner indoor unit.

[0015] A control method for an indoor air conditioning unit according to a third aspect embodiment of the present invention includes:

[0016] Acquire the first temperature detected by the first temperature sensor and the second temperature detected by the second temperature sensor;

[0017] Based on the first temperature and the second temperature difference, the rotation speed of the airflow splitter is adjusted to regulate the airflow of the first pipe section, the second pipe section and the third pipe section.

[0018] According to an embodiment of the present invention, the step of adjusting the rotational speed of the airflow splitter based on a first difference between a first temperature and a second temperature to adjust the airflow of the first pipe section, the second pipe section, and the third pipe section includes:

[0019] Based on the first difference, adjust the speed of the second cross-flow fan;

[0020] Wherein, the rotational speed of the second cross-flow fan is r1=[A(T1-T2)2] / (A+B); A is the width of the first flow splitting zone, B is the width of the second flow splitting zone, T1 is the first temperature, and T2 is the second temperature.

[0021] According to one embodiment of the present invention, after the step of adjusting the speed of the second cross-flow fan based on the first difference, the method further includes:

[0022] The third temperature detected by the first temperature sensor and the fourth temperature detected by the second temperature sensor are obtained.

[0023] The adjustment parameters are determined based on the second difference between the third and fourth temperatures;

[0024] Based on the second difference and adjustment parameters, the rotation speed of the airflow splitter is adjusted to regulate the airflow of the first pipe section, the second pipe section and the third pipe section.

[0025] According to an embodiment of the present invention, the step of adjusting the rotational speed of the airflow splitter based on a second difference and adjustment parameters to adjust the airflow of the first pipe section, the second pipe section, and the third pipe section includes:

[0026] Based on the second difference and the adjustment parameters, adjust the speed of the second cross-flow fan;

[0027] Wherein, the rotational speed of the second cross-flow fan is r2 = [K*A(T3-T4)]. 2 ] / (A+B); A is the width of the first flow divider, B is the width of the second flow divider, T3 is the first temperature, T4 is the second temperature, and K is the adjustment parameter.

[0028] According to one embodiment of the present invention, the adjustment parameter is positively correlated with the absolute value of the second difference.

[0029] According to an embodiment of the present invention, after the step of adjusting the rotational speed of the airflow splitter based on the second difference and adjustment parameters to adjust the airflow of the first pipe section, the second pipe section, and the third pipe section, the method further includes:

[0030] After the preset working time, the step of determining the adjustment parameters based on the second difference between the third and fourth temperatures is returned.

[0031] The air conditioner indoor unit provided by this invention precisely controls the rotation speed of the airflow splitter by detecting the temperature at the first and second pipe sections, thus achieving precise adjustment of the airflow distribution in the duct. This makes the airflow in each pipe section of the heat exchanger more uniform, effectively solving the problem of low heat exchange efficiency in some pipe sections due to excessive airflow. The uniform airflow distribution not only improves heat exchange efficiency but also makes the cooling or heating effect more uniform, significantly improving the performance of the air conditioner. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of the present invention or related technologies, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 This is a schematic diagram of the internal structure of an air conditioner indoor unit provided in an embodiment of the present invention;

[0034] Figure 2 This is a schematic diagram of the rotation of the airflow splitter in the indoor unit of an air conditioner according to an embodiment of the present invention;

[0035] Figure 3 This is a schematic diagram of the partitioning in an indoor air conditioning unit provided in an embodiment of the present invention;

[0036] Figure 4 This is a front view of an indoor air conditioner unit provided in an embodiment of the present invention;

[0037] Figure 5 This is a top view of an air conditioner indoor unit provided in an embodiment of the present invention;

[0038] Figure 6 A flowchart of a control method for an indoor air conditioning unit provided in an embodiment of the present invention;

[0039] Figure 7 A schematic diagram illustrating the principle of the control method for an indoor air conditioner provided in an embodiment of the present invention;

[0040] Figure 8 A schematic structural diagram of the controller provided in an embodiment of the present invention;

[0041] Figure 9 This is a schematic structural diagram of an air conditioner provided in an embodiment of the present invention.

[0042] Figure label:

[0043] 10. Housing; 110. Air inlet; 120. Air outlet; 20. First cross-flow fan; 30. Indoor heat exchanger; 310. First pipe section; 320. Second pipe section; 330. Third pipe section; 40. Airflow splitter; 410. Second cross-flow fan; 420. Drive mechanism; 430. Guide plate; 50. First temperature sensor; 60. Second temperature sensor;

[0044] 810. Acquisition module; 820. Adjustment module; 910. Processor; 920. Communication interface; 930. Memory; 940. Communication bus. Detailed Implementation

[0045] To make the objectives, technical solutions, and advantages of the invention clearer, the technical solutions of the invention will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the invention, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0046] In the description of the embodiments of the present invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of the present invention. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0047] In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the present invention based on the specific circumstances.

[0048] In embodiments of the present invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0049] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0050] An indoor air conditioning unit according to a first aspect embodiment of the present invention. For example... Figures 1 to 5 As shown, the indoor unit of the air conditioner includes: a housing 10, a first cross-flow fan 20, an indoor heat exchanger 30, an airflow splitter 40, a first temperature sensor 50, a second temperature sensor 60, and a controller.

[0051] In this embodiment, the housing 10 is the main structure of the indoor unit of the air conditioner, forming an air duct for air circulation. An air inlet 110 and an air outlet 120 are respectively provided at both ends of the air duct. The air inlet 110 is used to draw in indoor air, and the air outlet 120 is used to discharge treated air, thereby achieving indoor air circulation.

[0052] The first cross-flow fan 20 is located in the air duct and is a key component for driving airflow. When the first cross-flow fan 20 is running, it can draw in outdoor air from the air inlet 110, and after passing through the indoor heat exchanger 30, it can be discharged from the air outlet 120.

[0053] The indoor heat exchanger 30 includes a first pipe section 310, a second pipe section 320, and a third pipe section 330 connected in sequence. All three pipe sections are located in an air duct and are used to exchange heat with the passing air, thereby achieving cooling or heating functions. Compared to the second and third pipe sections 320 and 330, the first pipe section 310 is closer to the first cross-flow fan 20 and closer to the air outlet 120, resulting in a higher air velocity. This leads to a shorter residence time of air on the surface of the first pipe section 310, insufficient heat transfer, and a higher risk of overheating compared to the other pipe sections.

[0054] The airflow splitter 40 is one of the key components of this invention, and it is located at the air inlet 110. During the rotation of the airflow splitter 40, it directs a portion of the air blown into the first pipe section 310 to the second pipe section 320 and / or the third pipe section 330, thereby controlling the airflow through the first pipe section 310, the second pipe section 320, and the third pipe section 330, and thus achieving precise control of the airflow distribution.

[0055] The first temperature sensor 50 is disposed in the first pipe section 310 and is used to detect the temperature at the first pipe section 310. The second temperature sensor 60 is disposed in the second pipe section 320 and is used to detect the temperature at the second pipe section 320.

[0056] The controller is electrically connected to the airflow splitter 40, the first temperature sensor 50, and the second temperature sensor 60. These temperature sensors provide the controller with accurate temperature data so that the controller can adjust the rotation speed of the airflow splitter 40 based on this data, thereby controlling the airflow of the first pipe section 310, the second pipe section 320, and the third pipe section 330 by detecting the temperature.

[0057] In practical applications, the controller can determine the first temperature difference between the first temperature and the second temperature based on the first temperature detected by the first temperature sensor and the second temperature detected by the second temperature sensor, determine the heat exchange efficiency of each pipe section of the indoor heat exchanger 30, and adjust the speed of the airflow splitter 40 accordingly.

[0058] Under normal circumstances, due to the suction characteristics of the first cross-flow fan 20, the air volume through the first pipe section 310 on the evaporator is large and the air flow velocity is fast, resulting in low thermal efficiency of the first pipe section 310.

[0059] For example, such as Figure 3 As shown, during the cooling process of the air conditioner, when the temperature detected by the first temperature sensor 50 is much higher than the temperature detected by the second temperature sensor 60, it indicates that the heat exchange efficiency of the first pipe section 310 is low. At this time, the controller can control the airflow splitter 40 to increase its speed and guide some of the air blown into the first pipe section 310 to the second pipe section 320 and / or the third pipe section 330, thereby reducing the amount of air blown into the first pipe section 310 and lowering its temperature.

[0060] The air conditioner indoor unit provided by this invention precisely controls the rotation speed of the airflow splitter by detecting the temperature at the first and second pipe sections, thus achieving precise adjustment of the airflow distribution in the duct. This makes the airflow in each pipe section of the heat exchanger more uniform, effectively solving the problem of low heat exchange efficiency in some pipe sections due to excessive airflow. The uniform airflow distribution not only improves heat exchange efficiency but also makes the cooling or heating effect more uniform, significantly improving the performance of the air conditioner.

[0061] In one example, such as Figures 1 to 5 As shown, the airflow splitter 40 includes: a second cross-flow fan 410, a guide plate 430, and a drive mechanism 420.

[0062] The second cross-flow fan 410 is located at the air inlet 110. The guide plate 430 is shielded on one side of the second cross-flow fan 410. The guide plate 430 extends outward from the air inlet 110. By rotating the second cross-flow fan 410, some of the air blown into the first pipe section 310 can be directed to the second pipe section 320 and / or the third pipe section 330.

[0063] The drive mechanism 420 is electrically connected to the controller. The drive end of the drive mechanism 420 is connected to the second cross-flow fan 410, driving the second cross-flow fan 410 to rotate, thereby regulating the airflow through the first pipe section 310, the second pipe section 320, and the third pipe section 330. The drive mechanism 420 can be a motor, a stepper motor, or other type of power device, capable of providing sufficient driving force and precisely controlling the rotation of the second cross-flow fan 410. Through cooperation with the controller, the drive mechanism 420 can precisely adjust the speed of the second cross-flow fan 410 according to control commands, thereby achieving fine control of the airflow distribution.

[0064] During actual operation, the controller calculates the required airflow distribution based on the temperature data detected by the temperature sensor. Then, the controller sends a control command to the drive mechanism 420, which, upon receiving the command, drives the second cross-flow fan 410 to rotate. By continuously adjusting the speed of the second cross-flow fan 410, the airflow through the first pipe section 310, the second pipe section 320, and the third pipe section 330 can be adjusted, thereby optimizing the airflow distribution and improving heat exchange efficiency.

[0065] In some embodiments, such as Figures 1 to 5 As shown, a first diversion zone and a second diversion zone are provided at the air inlet 110. The first pipe section 310 corresponds to the first diversion zone, and the second pipe section 320 corresponds to the second diversion zone.

[0066] In this embodiment, as Figure 3 As shown, the width of the first flow divider is A, and the width of the second flow divider is B. The second cross-flow fan 410 and the guide plate 430 are disposed in the first flow divider, and the guide plate 430 extends outward from the first flow divider of the air inlet 110 and tilts towards the second flow divider.

[0067] Due to the suction characteristics of the first cross-flow fan 20, the airflow through the first pipe section 310 on the evaporator is usually large and the airflow velocity is fast, resulting in low thermal efficiency of the first pipe section 310. When the second cross-flow fan 410 rotates, it can guide the air in the first distribution zone to other positions through the guide plate 430, thereby regulating the airflow through the first pipe section 310, the second pipe section 320, and the third pipe section 330.

[0068] In this embodiment, the second cross-flow fan 410 can control the airflow through the first pipe section 310, the second pipe section 320 and the third pipe section 330 by adjusting its speed.

[0069] It should be noted that the speed of the second cross-flow fan 410 is adjustable. When it is necessary to reduce the airflow in the first split zone, the speed of the second cross-flow fan 410 can be increased. When it is necessary to increase the airflow in the first split zone, the speed of the second cross-flow fan 410 can be decreased.

[0070] An air conditioner provided according to a second aspect embodiment of the present invention, such as Figures 1 to 5 As shown, the air conditioner includes the aforementioned indoor air conditioning unit.

[0071] As a core component of an air conditioner, the performance of the indoor unit directly affects the overall operation of the air conditioner. By introducing an indoor unit with precise airflow control, the air conditioner provided in this embodiment of the invention has significantly improved in terms of heat exchange efficiency, energy consumption control, and operational stability. In this indoor unit, the airflow splitter 40 plays a crucial role. Through the precise coordination of the second cross-flow fan 410 and the drive mechanism 420, the airflow splitter 40 can adjust the airflow entering each pipe section according to actual needs. The second cross-flow fan 410 can have its speed controlled by a controller, a design that allows the air conditioner to flexibly adjust the airflow distribution according to actual requirements.

[0072] The control method for an indoor air conditioning unit provided in the third aspect embodiment of the present invention, such as Figure 6 As shown, the process includes the following:

[0073] Step S110: Obtain the first temperature detected by the first temperature sensor and the second temperature detected by the second temperature sensor.

[0074] Step S120: Based on the first difference between the first temperature and the second temperature, adjust the rotation speed of the airflow splitter to adjust the air volume of the first pipe section, the second pipe section and the third pipe section.

[0075] In this embodiment, the controller first acquires the detected first temperature and second temperature from the first temperature sensor and the second temperature sensor, respectively. These temperature sensors are arranged at different locations on the indoor unit of the air conditioner to detect the temperature in different areas. The first temperature sensor is located in the first pipe section, and the second temperature sensor is located in the second pipe section.

[0076] Next, the controller calculates the first difference between the first temperature and the second temperature. This first difference reflects the temperature differences between different zones and serves as the basis for adjusting the airflow distribution.

[0077] Then, the controller adjusts the speed of the airflow splitter based on the calculated first difference. The airflow splitter is a device installed inside the indoor unit of the air conditioner, used to regulate the airflow entering different pipe sections. By adjusting the speed of the airflow splitter, the airflow at the first, second, and third pipe sections can be changed.

[0078] By continuously adjusting the rotation speed of the airflow splitter, the controller can gradually reduce the temperature differences between different zones, achieving a uniform indoor temperature distribution. Simultaneously, the controller can dynamically adjust the state of the airflow splitter based on the user's set temperature and real-time changes in the indoor environment to meet the user's personalized needs.

[0079] Furthermore, to ensure the accuracy and effectiveness of the control method, the controller can periodically calibrate and inspect the temperature sensor to ensure that the detected temperature data is accurate and reliable. Simultaneously, the controller can optimize and adjust its strategy based on historical data and empirical values ​​to improve control precision and response speed.

[0080] like Figure 7 As shown, step S120: adjusting the speed of the airflow splitter to adjust the airflow of the first pipe section, the second pipe section and the third pipe section based on the first difference between the first temperature and the second temperature, includes: adjusting the speed of the second cross-flow fan based on the first difference.

[0081] Specifically, in the initial state, the second cross-flow fan has not yet started. The controller first calculates the first difference between the first temperature T1 and the second temperature T2. The first difference represents the temperature difference between the first pipe section and the second pipe section.

[0082] Next, the controller adjusts the speed r1 of the second cross-flow fan based on the calculated first difference. 2 ] / (A+B). This formula converts the temperature difference into the rotational speed of the second cross-flow fan. A is the width of the first flow divider, B is the width of the second flow divider, T1 is the first temperature, and T2 is the second temperature.

[0083] According to this formula, when the first difference is large, it indicates a significant temperature difference between the first and second pipe sections. In this case, the speed of the second cross-flow fan is generally increased. When the first difference is small, it indicates a smaller temperature difference between the first and second pipe sections. In this case, the speed of the second cross-flow fan is generally decreased.

[0084] The controller can adjust the speed of the second cross-flow fan via an electric actuator or a mechanical transmission mechanism. Once the speed of the second cross-flow fan is adjusted, the airflow into the first, second, and third duct sections will change accordingly, thereby achieving a uniform distribution of indoor temperature.

[0085] In some embodiments, such as Figure 6 and Figure 7 As shown, after adjusting the speed of the second cross-flow fan based on the first difference, the process further includes:

[0086] Step S130: Obtain the third temperature detected by the first temperature sensor and the fourth temperature detected by the second temperature sensor.

[0087] Step S140: Determine the adjustment parameters based on the second difference between the third temperature and the fourth temperature.

[0088] Step S150: Based on the second difference and adjustment parameters, adjust the rotation speed of the airflow splitter to adjust the air volume of the first pipe section, the second pipe section and the third pipe section.

[0089] After the initial airflow adjustment, to ensure effectiveness, the controller again acquires temperature data detected by the first and second temperature sensors, which are recorded as the third temperature T3 and the fourth temperature T4, respectively. This time, the acquired temperature data represents the temperature values ​​reached under the new steady-state conditions after the initial speed adjustment.

[0090] Next, the controller calculates a second difference between the fourth temperature T4 and the fifth temperature T5. This second difference reflects the temperature differences that still exist between the pipe sections after the initial adjustment.

[0091] Based on the calculated second difference, the controller further adjusts the speed of the second cross-flow fan. The purpose of this step is to fine-tune the airflow distribution to further reduce the temperature differences between different areas and achieve more precise temperature control.

[0092] When adjusting the speed of the second cross-flow fan, the controller can use a method similar to that in step S120. That is, the speed of the second cross-flow fan is determined based on the proportional relationship of the second difference. In this embodiment, to improve the adjustment effect, an adjustment parameter is set, which is determined based on the second difference between the third and fourth temperatures. After determining the adjustment parameter, the controller adjusts the speed of the airflow splitter based on the second difference and the adjustment parameter to adjust the airflow of the first, second, and third pipe sections.

[0093] Through this series of steps, the air conditioner indoor unit control method provided by this invention can achieve precise adjustment of indoor temperature distribution. First, by initially adjusting the speed of the second cross-flow fan, the temperature distribution is made to reach a relatively uniform state; then, by detecting the temperature again and fine-tuning the speed of the second cross-flow fan, the temperature difference between different areas is further reduced, improving temperature uniformity and user comfort.

[0094] In one embodiment, such as Figure 7As shown, step S150: adjusting the speed of the airflow splitter based on the second difference and adjustment parameters to adjust the airflow of the first pipe section, the second pipe section and the third pipe section includes: adjusting the speed of the second cross-flow fan based on the second difference and adjustment parameters.

[0095] Specifically, the controller first determines the second difference. The second difference represents the difference between the third temperature T3 and the fourth temperature T4. These two differences reflect the temperature differences that still exist between the temperature monitoring points after the initial adjustment.

[0096] Next, the controller matches the calculated second difference with preset temperature ranges. These temperature ranges are pre-set based on experimental data and empirical values, and each temperature range corresponds to a specific adjustment parameter. By matching the temperature difference ranges, the controller can select the appropriate adjustment parameter to guide subsequent speed adjustments.

[0097] Based on the adjustment parameters obtained from the matching and the second difference, the controller calculates the rotational speed of the second cross-flow fan, r2 = [K*A(T3-T4)]. 2 ] / (A+B). A is the width of the first flow divider, B is the width of the second flow divider, T3 is the first temperature, T4 is the second temperature, and K is the adjustment parameter.

[0098] This formula takes into account both the magnitude of the temperature difference and the influence of adjustment parameters, and can yield a more reasonable rotational speed.

[0099] Finally, the controller adjusts the second cross-flow fan based on the calculated rotational speed. By precisely controlling the rotational speed of the second cross-flow fan, the airflow distribution in each pipe section can be further fine-tuned, thereby achieving more precise temperature control.

[0100] It is important to note that in practical applications, the setting of temperature range and the selection of adjustment parameters need to be comprehensively considered based on factors such as the specific air conditioner model, room structure, and user needs.

[0101] In this embodiment, the adjustment parameter is positively correlated with the absolute value of the temperature difference.

[0102] In one specific embodiment, the temperature difference ΔT = |T3 - T4|. T3 is the temperature of the first pipe segment detected by the first temperature sensor, and T4 is the temperature of the second pipe segment detected by the second temperature sensor.

[0103] When 0 ≤ ΔT ≤ 1 degree Celsius, the adjustment parameter K = 1, and the rotational speed of the second cross-flow fan is r2 = [1*A(T3-T4)]. 2 ] / (A+B).

[0104] When 1 ≤ ΔT ≤ 2 degrees Celsius, adjust parameter K = 2, and at this time, the rotational speed of the second cross-flow fan r2 = [2*A(T3-T4)]. 2 ] / (A+B).

[0105] When 2 ≤ ΔT ≤ 3 degrees Celsius, adjust parameter K = 4. At this time, the rotational speed of the second cross-flow fan is r2 = [4*A(T3-T4)]. 2 ] / (A+B).

[0106] When 3 ≤ ΔT ≤ 4 degrees Celsius, adjust parameter K = 7. At this time, the rotational speed of the second cross-flow fan is r2 = [7 * A(T3 - T4)]. 2 ] / (A+B).

[0107] When 4 < ΔT degrees Celsius, adjust parameter K = 10. At this time, the rotational speed of the second cross-flow fan is r2 = [10 * A(T3 - T4)]. 2 ] / (A+B).

[0108] Once the adjustment parameter K is determined, the control system can use the formula r2 = [K * A(T3 - T4)]. 2 The rotational speed is calculated using ] / (A+B). This formula takes into account both the magnitude of the temperature difference and the influence of adjustment parameters, ensuring that the rotational speed can accurately regulate the temperature distribution.

[0109] In addition, after adjusting the rotational speed of the airflow splitter based on the second difference and adjustment parameters to regulate the airflow of the first, second, and third pipe sections, the process also includes:

[0110] After the preset working time, the step of determining the adjustment parameters based on the second difference between the third and fourth temperatures is returned.

[0111] Specifically, after a preset operating time, the controller returns to the step of determining adjustment parameters based on the second difference between the third and fourth temperatures to perform a new round of temperature detection and airflow adjustment. This preset time can be set according to the actual application scenario and user needs, with the aim of ensuring that the system can periodically perform temperature detection and airflow adjustment to adapt to temperature changes.

[0112] By cyclically executing these steps, the air conditioning indoor unit control method of the present invention can achieve continuous and dynamic temperature regulation. Each cycle adjusts the fan speed and the angle of the airflow splitter based on the latest temperature data, thereby precisely controlling the airflow distribution in each pipe section to achieve a uniform indoor temperature distribution. This dynamic adjustment not only improves user comfort but also utilizes air conditioning resources more effectively and reduces energy consumption.

[0113] In summary, the air conditioner indoor unit control method provided by this invention achieves precise control of indoor temperature distribution by accurately adjusting the fan speed and the angle of the airflow splitter. Through multiple cycles of detection and adjustment, it can continuously adapt to changes in the indoor environment, providing users with a more comfortable and energy-efficient air conditioning experience.

[0114] The controller provided according to the fourth aspect embodiment of the present invention, please refer to Figure 8 ,include:

[0115] The acquisition module 810 is used to acquire the first temperature detected by the first temperature sensor and the second temperature detected by the second temperature sensor.

[0116] The adjustment module 820 is used to adjust the rotation speed of the airflow splitter based on the first difference between the first temperature and the second temperature, so as to adjust the air volume of the first pipe section, the second pipe section and the third pipe section.

[0117] It should be noted that steps S110 to S120 and other steps are for ease of description only and do not constitute a time sequence limitation for the control method of the indoor unit of the air conditioner. Furthermore, some content is described in detail in the control method provided in the third aspect embodiment, and all content in the control method is also applicable to the embodiments provided in the fourth aspect embodiment. Therefore, to avoid repetition, the controller provided in the fourth aspect embodiment is not described in detail. Similarly, the content in the above two aspect embodiments can be used to explain the content of all subsequent aspect embodiments; therefore, repeated content will not be described in the subsequent embodiments. The controller provided according to the embodiments of the present invention has technical effects corresponding to the technical effects of the above control method, and will not be described again here.

[0118] An air conditioner according to a fifth aspect embodiment of the present invention includes a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the program, it implements the steps of the control method for an indoor unit of an air conditioner according to an embodiment of the present invention.

[0119] Figure 9A schematic diagram of the physical structure of an electronic device is provided. This electronic device may include a processor 910, a communication interface 920, a memory 930, and a communication bus 940. The processor 910, communication interface 920, and memory 930 communicate with each other via the communication bus 940. The processor 910 can call logical instructions stored in the memory 930 to execute a control method for an indoor air conditioning unit. This method includes: acquiring a first temperature detected by a first temperature sensor and a second temperature detected by a second temperature sensor; and adjusting the rotational speed of an airflow splitter based on a first difference between the first and second temperatures to adjust the airflow of a first pipe section, a second pipe section, and a third pipe section.

[0120] Furthermore, the logical instructions in the aforementioned memory 930 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, essentially, or the part that contributes to the prior art, or a 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 execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0121] The device embodiments described above are merely illustrative. 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 network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0122] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus necessary general-purpose hardware platforms, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solutions, in essence or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments or some parts of the embodiments.

[0123] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An indoor unit for an air conditioner, characterized in that, include: The housing (10) has an air duct, and the two ends of the air duct are respectively provided with an air inlet (110) and an air outlet (120); A first cross-flow fan (20) is installed in the air duct; The indoor heat exchanger (30) includes a first pipe section (310), a second pipe section (320) and a third pipe section (330) that are connected in sequence and whose distance from the first cross-flow fan (20) increases in sequence. The first pipe section (310), the second pipe section (320) and the third pipe section (330) are all arranged in the air duct. An airflow splitter (40) is disposed at the air inlet (110) for directing a portion of the air blown into the first pipe section (310) to the second pipe section (320) and / or the third pipe section (330); the airflow splitter (40) includes: a second cross-flow fan (410), a guide plate (430) and a drive mechanism (420); A first temperature sensor (50), a second temperature sensor (60), and a controller are provided. The first temperature sensor (50) is located in the first pipe section (310), and the second temperature sensor (60) is located in the second pipe section (320). The controller is electrically connected to the airflow splitter (40), the first temperature sensor (50), and the second temperature sensor (60) to control the rotation speed of the airflow splitter (40) by detecting the temperature, thereby adjusting the airflow of the first pipe section (310), the second pipe section (320), and the third pipe section (330). The controller is used to acquire the first temperature detected by the first temperature sensor (50) and the second temperature detected by the second temperature sensor (60). The controller adjusts the rotation speed of the second cross-flow fan (410) based on the first difference between the first temperature and the second temperature. The rotation speed r1 of the second cross-flow fan (410) is r1 = [A(T1-T2)]. 2 ] / (A+B); A is the width of the first flow divider, B is the width of the second flow divider, T1 is the first temperature, and T2 is the second temperature.

2. The indoor unit of the air conditioner according to claim 1, characterized in that, The second cross-flow fan (410) is disposed at the air inlet (110), and the guide plate (430) is shielded on one side of the second cross-flow fan (410). The guide plate (430) extends outward from the air inlet (110) at an angle. The drive mechanism (420) is electrically connected to the controller. The drive end of the drive mechanism (420) is connected to the second cross-flow fan (410) to guide part of the air blown into the first pipe section (310) into the second pipe section (320) and / or the third pipe section (330).

3. The indoor unit of the air conditioner according to claim 2, characterized in that, The air inlet (110) is provided with a first flow distribution area and a second flow distribution area. The first pipe section (310) corresponds to the first flow distribution area, and the second pipe section (320) corresponds to the second flow distribution area. The second cross-flow fan (410) and the guide plate (430) are arranged in the first flow distribution area. The guide plate (430) extends outward from the first flow distribution area of ​​the air inlet (110) and tilts towards the second flow distribution area.

4. An air conditioner, characterized in that, Including the indoor unit of an air conditioner as described in any one of claims 1-3.

5. A control method for an air conditioner indoor unit based on any one of claims 1-3, characterized in that, include: Acquire the first temperature detected by the first temperature sensor (50) and the second temperature detected by the second temperature sensor (60); Based on the first temperature difference between the first temperature and the second temperature, the rotation speed of the airflow splitter (40) is adjusted to regulate the air volume of the first pipe section (310), the second pipe section (320) and the third pipe section (330).

6. The control method according to claim 5, characterized in that, The step of adjusting the rotational speed of the airflow splitter (40) based on the first difference between the first temperature and the second temperature to adjust the airflow of the first pipe section (310), the second pipe section (320), and the third pipe section (330) includes: Based on the first difference, adjust the speed of the second cross-flow fan (410); Among them, the rotational speed of the second cross-flow fan (410) is r1 = [A(T1-T2)]. 2 ] / (A+B); A is the width of the first flow divider, B is the width of the second flow divider, T1 is the first temperature, and T2 is the second temperature.

7. The control method according to claim 5, characterized in that, After the step of adjusting the speed of the second cross-flow fan (410) based on the first difference, the method further includes: Acquire the third temperature detected by the first temperature sensor (50) and the fourth temperature detected by the second temperature sensor (60); The adjustment parameters are determined based on the second difference between the third and fourth temperatures; Based on the second difference and adjustment parameters, the rotation speed of the airflow splitter (40) is adjusted to regulate the air volume of the first pipe section (310), the second pipe section (320) and the third pipe section (330).

8. The control method according to claim 7, characterized in that, The step of adjusting the rotational speed of the airflow splitter (40) based on the second difference and adjustment parameters to adjust the airflow of the first pipe section (310), the second pipe section (320), and the third pipe section (330) includes: Based on the second difference and the adjustment parameters, the speed of the second cross-flow fan (410) is adjusted; Among them, the rotational speed r2 of the second cross-flow fan (410) is [K*A(T3-T4)]. 2 ] / (A+B); A is the width of the first flow divider, B is the width of the second flow divider, T3 is the first temperature, T4 is the second temperature, and K is the adjustment parameter.

9. The control method according to claim 8, characterized in that, The adjustment parameter is positively correlated with the absolute value of the second difference.

10. The control method according to claim 7, characterized in that, Following the step of adjusting the rotational speed of the airflow splitter (40) based on the second difference and adjustment parameters to adjust the airflow of the first pipe section (310), the second pipe section (320), and the third pipe section (330), the method further includes: After the preset working time, the step of determining the adjustment parameters based on the second difference between the third and fourth temperatures is returned.

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