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 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 first pipe section, the second pipe section and the third pipe section are arranged in the wind channel; a flow divider is rotatably arranged at the air inlet; a first temperature sensor, a second temperature sensor, a third temperature sensor and a controller are arranged, the first temperature sensor is arranged in the first pipe section, the second temperature sensor is arranged in the second pipe section, the third temperature sensor is arranged in the third pipe section, and the controller is electrically connected with the flow divider, the first temperature sensor, the second temperature sensor and the third temperature sensor. The air conditioner indoor unit provided by the application can accurately control the rotation of the flow divider by detecting the temperature of different pipe sections, and the accurate adjustment of the air volume distribution in the wind channel is realized.

Description

TECHNICAL FIELD

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

[0002] In the design of air conditioner indoor units, cross-flow fans are widely used due to their unique air flow transmission method. However, due to the air suction characteristics of cross-flow fans, the air volume passing through part of the tube sections in the heat exchanger is large, and the flow rate of the air field is too fast. This uneven air field distribution leads to a decrease in the heat exchange efficiency of part of the tube sections, thereby affecting the performance and energy efficiency of the entire air conditioner.

[0003] Traditional air conditioner indoor unit designs have great challenges in controlling the uniformity of the air field of the heat exchanger tube sections. Due to the uneven flow rate of the air field, part of the tube sections cannot be fully cooled or heated, thereby affecting the cooling or heating effect of the air conditioner. This not only reduces the use efficiency of the air conditioner, but also increases energy consumption, affecting the use effect of the air conditioner. SUMMARY

[0004] The present application aims to at least solve one of the technical problems existing in the related art. To this end, the present application provides an air conditioner indoor unit, an air conditioner and a control method thereof, which solves the problem of uneven flow rate of the air field of the existing air conditioner, so that part of the tube sections cannot be fully cooled or heated, thereby affecting the cooling or heating effect of the air conditioner.

[0005] According to the air conditioner indoor unit provided by the first aspect of the present application, the air conditioner indoor unit comprises:

[0006] a housing formed with an air duct, the air duct having an air inlet and an air outlet at two ends thereof;

[0007] a cross-flow fan arranged in the air duct;

[0008] an indoor heat exchanger comprising a first tube section, a second tube section and a third tube section connected in sequence, the first tube section, the second tube section and the third tube section being arranged in the air duct;

[0009] a flow divider rotatably arranged at the air inlet and arranged opposite to the second tube section;

[0010] a first temperature sensor, a second temperature sensor, a third temperature sensor and a controller, the first temperature sensor being arranged at the first tube section, the second temperature sensor being arranged at the second tube section, the third temperature sensor being arranged at the third tube section, the controller being electrically connected with the flow divider, the first temperature sensor, the second temperature sensor and the third temperature sensor to control the flow divider to adjust the air volume of the first tube section, the second tube section and the third tube section by detecting the temperature.

[0011] According to one embodiment of the present application, the flow divider comprises a flow divider plate and a driving mechanism;

[0012] The flow divider plate is rotatably arranged at the air inlet and opposite to the second pipe section; the driving mechanism is electrically connected to the controller, and a driving end of the driving mechanism is connected to the flow divider plate for driving the flow divider plate to rotate so as to adjust the air volume flowing through the first pipe section, the second pipe section and the third pipe section.

[0013] According to one embodiment of the present application, the air inlet is provided with a first flow dividing area and a second flow dividing area, and the flow divider plate is rotatably arranged at a boundary line between the first flow dividing area and the second flow dividing area;

[0014] The first pipe section corresponds to the first flow dividing area, a part of the second pipe section corresponds to the first flow dividing area, another part of the second pipe section corresponds to the second flow dividing area, and the third pipe section corresponds to the second flow dividing area.

[0015] According to one embodiment of the present application, the flow divider plate is rotatable between a first rotation angle and a second rotation angle;

[0016] In the case that the flow divider plate rotates to the first rotation angle, the flow divider plate is perpendicular to the air inlet so as to completely expose the air blown by the first flow dividing area to the first pipe section and the second pipe section;

[0017] In the case that the flow divider plate rotates to the second rotation angle, the flow divider plate at least blocks part of the air inlet so as to block at least part of the first flow dividing area.

[0018] According to the air conditioner provided by the second aspect of the embodiment of the present application, the air conditioner comprises the above air conditioner indoor unit.

[0019] According to the control method of the air conditioner indoor unit provided by the third aspect of the embodiment of the present application, the method comprises:

[0020] Obtaining a first temperature detected by a first temperature sensor, a second temperature detected by a second temperature sensor and a third temperature detected by a third temperature sensor;

[0021] Adjusting the flow divider based on a first difference between the first temperature and the second temperature and a second difference between the second temperature and the third temperature so as to adjust the air volume at the first pipe section, the second pipe section and the third pipe section.

[0022] According to one embodiment of the present application, the step of adjusting the flow divider based on the first difference between the first temperature and the second temperature and the second difference between the second temperature and the third temperature so as to adjust the air volume at the first pipe section, the second pipe section and the third pipe section comprises:

[0023] Adjust the included angle between the flow distribution plate and the demarcation line on the first and second flow distribution areas to a first preset angle based on the first and second differences;

[0024] The first preset angle is α=90°×(A / (A+B)), A is the first difference, which is the absolute value of the difference between the first temperature and the second temperature, and B is the first difference, which is the absolute value of the difference between the second temperature and the third temperature.

[0025] According to an embodiment of the present application, a fourth temperature detected by the first temperature sensor, a fifth temperature detected by the second temperature sensor, and a sixth temperature detected by the third temperature sensor are obtained.

[0026] Adjust the rotation angle of the flow distribution plate based on a third difference between the fourth temperature and the fifth temperature and a fourth difference between the fifth temperature and the sixth temperature.

[0027] According to an embodiment of the present application, the step of adjusting the rotation angle of the flow distribution plate based on the third difference between the fourth temperature and the fifth temperature and the fourth difference between the fifth temperature and the sixth temperature comprises:

[0028] Determine the temperature difference of the third and fourth differences;

[0029] Match the temperature interval corresponding to the temperature difference; each temperature interval corresponds to an adjustment parameter.

[0030] Adjust the included angle between the flow distribution plate and the demarcation line to a second preset angle based on the adjustment parameter, the third difference, and the fourth difference.

[0031] The second preset angle is β=90°×(kC / (kC+D)), k is the adjustment parameter, C is the third difference, which is the absolute value of the difference between the fourth temperature and the fifth temperature, and D is the fourth difference, which is the absolute value of the difference between the fifth temperature and the sixth temperature.

[0032] According to an embodiment of the present application, the adjustment parameter is positively correlated with the absolute value of the temperature difference.

[0033] The air conditioner indoor unit provided by the present application precisely controls the rotation of the flow distributor by detecting the temperature of different pipe sections, thereby achieving precise adjustment of the air volume distribution in the air duct. This makes the air flow in each pipe section of the heat exchanger more uniform, effectively solving the problem of low heat exchange efficiency caused by excessive air volume in some pipe sections. Uniform air flow distribution not only improves heat exchange efficiency, but also makes the refrigeration or heating effect more uniform, significantly improving the use effect of the air conditioner. BRIEF DESCRIPTION OF DRAWINGS

[0034] In order to make the technical solutions in the embodiments of the present application or the related art clearer, below the accompanying drawings needed to be used in the embodiments or the related art description will be briefly introduced. Obviously, the accompanying drawings in the following description only constitute some embodiments of the present application, and for ordinary skilled in the art, other accompanying drawings can also be obtained without any creative effort based on these accompanying drawings.

[0035] Figure 1 A schematic view of the rotation of the flow divider in the indoor unit of the air conditioner according to an embodiment of the present application;

[0036] Figure 2 A schematic view of the rotation of the flow divider in the indoor unit of the air conditioner according to an embodiment of the present application;

[0037] Figure 3 A schematic view of the rotation of the flow divider in the indoor unit of the air conditioner according to an embodiment of the present application;

[0038] Figure 4 A front view of the indoor unit of the air conditioner according to an embodiment of the present application;

[0039] Figure 5 A top view of the indoor unit of the air conditioner according to an embodiment of the present application;

[0040] Figure 6 A flow chart of the control method of the indoor unit of the air conditioner according to an embodiment of the present application;

[0041] Figure 7 A schematic view of the principle of the control method of the indoor unit of the air conditioner according to an embodiment of the present application;

[0042] Figure 8 A schematic structural view of the controller according to an embodiment of the present application;

[0043] Figure 9 A schematic structural view of the air conditioner according to an embodiment of the present application.

[0044] Reference signs:

[0045] 10, housing; 110, air inlet; 120, air outlet; 20, cross-flow fan; 30, indoor heat exchanger; 310, first pipe section; 320, second pipe section; 330, third pipe section; 40, flow divider; 410, flow dividing plate; 420, driving mechanism; 50, first temperature sensor; 60, second temperature sensor; 70, third temperature sensor;

[0046] 810, acquisition module; 820, adjustment module; 910, processor; 920, communication interface; 930, memory; 940, communication bus. DETAILED DESCRIPTION

[0047] In order to make the objectives, technical solutions and advantages of the application clearer, the technical solutions of the application will be clearly described below with reference to the drawings in the application. Obviously, the described embodiments are only some of the embodiments of the application, but not all of the embodiments of the application. Based on the embodiments of the application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the application.

[0048] In the description of the embodiments of the application, it should be noted that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the embodiments of the application and simplify the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the embodiments of the application. In addition, the terms "first", "second", "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance.

[0049] In the description of the embodiments of the application, it should be noted that unless otherwise explicitly specified and limited, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meaning of the above terms in the embodiments of the application can be understood according to the specific circumstances.

[0050] In the embodiments of the application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0051] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples without contradiction.

[0052] According to the air conditioner indoor unit provided by the first aspect of the present application, the air conditioner indoor unit comprises a shell 10, a cross-flow fan 20, an indoor heat exchanger 30, a flow divider 40, a first temperature sensor 50, a second temperature sensor 60, a third temperature sensor 70 and a controller. Figures 1 to 5 As shown in the figure, the air conditioner indoor unit comprises a shell 10, a cross-flow fan 20, an indoor heat exchanger 30, a flow divider 40, a first temperature sensor 50, a second temperature sensor 60, a third temperature sensor 70 and a controller.

[0053] In the present embodiment, the shell 10 is the main structure of the air conditioner indoor unit, which forms an air duct for the circulation of air. The air duct has an air inlet 110 and an air outlet 120 at both ends. The air inlet 110 is used to suck indoor air, and the air outlet 120 is used to discharge the treated air, thereby realizing the circulation of indoor air.

[0054] The cross-flow fan 20 is arranged in the air duct and is a key component for driving air flow. When the cross-flow fan 20 operates, it can suck outdoor air from the air inlet 110 and discharge it from the air outlet 120 after passing through the indoor heat exchanger 30.

[0055] The indoor heat exchanger 30 comprises a first pipe section 310, a second pipe section 320 and a third pipe section 330 connected in sequence, and the first pipe section 310, the second pipe section 320 and the third pipe section 330 are arranged in the air duct for heat exchange with the passing air, thereby realizing the functions of refrigeration or heating. The first pipe section 310 is closer to the cross-flow fan 20 and closer to the air outlet 120 than the second pipe section 320 and the third pipe section 330, and the wind speed is too high, which causes the air to stay on the surface of the first pipe section 310 for a short time, the heat transfer is not sufficient, and the first pipe section 310 is prone to overheating relative to other pipe sections.

[0056] The flow divider 40 is one of the key components of the present application, and the flow divider 40 is rotatably arranged at the air inlet 110 opposite to the second pipe section 320. By adjusting the rotation of the flow divider 40, the air volume flowing through the first pipe section 310, the second pipe section 320 and the third pipe section 330 can be controlled, thereby realizing accurate regulation and control of the air field distribution.

[0057] A 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. A 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. A third temperature sensor 70 is disposed in the third pipe section 330 and is used to detect the temperature at the third pipe section 330.

[0058] The controller is electrically connected to the splitter 40, the first temperature sensor 50, the second temperature sensor 60, and the third temperature sensor 70. These temperature sensors provide the controller with accurate temperature data so that the controller can precisely adjust the position of the 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.

[0059] In practical applications, the controller can determine the first difference between the first temperature and the second temperature, and the second difference between the second temperature and the third temperature, based on the first temperature detected by the first temperature sensor, the second temperature detected by the second temperature sensor, and the third temperature detected by the third temperature sensor. It can then determine the heat exchange efficiency of each pipe section of the indoor heat exchanger 30 and adjust the rotation of the distributor 40 accordingly.

[0060] Under normal circumstances, due to the air intake characteristics of the 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.

[0061] For example, such as Figure 3 As shown, during the air conditioner's cooling process, when the temperature detected by the first temperature sensor 50 is much higher than the temperature detected by the second temperature sensor 60, and the temperature detected by the second temperature sensor 60 is much higher than the temperature detected by the third temperature sensor 70, it indicates that the heat exchange efficiency of the first pipe section 310 and the second pipe section 320 is low. At this time, the controller can control the distributor 40 to rotate, blocking the air directed towards the first pipe section 310 and the second pipe section 320, reducing the amount of air blown towards the first pipe section 310 and the second pipe section 320, and lowering their temperature.

[0062] The air conditioner indoor unit provided by this invention precisely controls the rotation of the distributor by detecting the temperature of different pipe sections, thereby 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.

[0063] In one example, such as Figures 1 to 5As shown, the flow distributor 40 comprises a flow distribution plate 410 and a driving mechanism 420. The flow distribution plate 410 is arranged opposite to the second pipe section 320. By changing the rotation angle of the flow distribution plate 410, the flow area of the air duct can be controlled, so as to realize accurate adjustment of the air volume.

[0064] The driving mechanism 420 is electrically connected with the controller. The driving end of the driving mechanism 420 is connected with the flow distribution plate 410, for driving the flow distribution plate 410 to rotate, so as to adjust the air volume flowing through the first pipe section 310, the second pipe section 320 and the third pipe section 330. The driving mechanism 420 can be a motor, a stepping motor or other types of power devices, which can provide sufficient driving force and accurately control the rotation angle of the flow distribution plate 410. Through cooperation with the controller, the driving mechanism 420 can accurately adjust the rotation of the flow distribution plate 410 according to the control instruction, so as to realize fine control of the air volume distribution.

[0065] In actual operation, the controller calculates the air volume distribution to be adjusted according to the temperature data detected by the temperature sensor. Then, the controller sends a control instruction to the driving mechanism 420. After receiving the instruction, the driving mechanism 420 drives the flow distribution plate 410 to rotate to the corresponding angle. By continuously adjusting the rotation of the flow distribution plate 410, the air volume flowing through the first pipe section 310, the second pipe section 320 and the third pipe section 330 can be adjusted, so as to optimize the air field distribution and improve the heat exchange efficiency.

[0066] In some embodiments, as shown, Figures 1 to 5 The first flow distribution area and the second flow distribution area are arranged at the air inlet 110. The flow distribution plate 410 is rotatably arranged at the boundary between the first flow distribution area and the second flow distribution area. The first pipe section 310 corresponds to the first flow distribution area. Part of the second pipe section 320 corresponds to the first flow distribution area, and the other part of the second pipe section 320 corresponds to the second flow distribution area. The third pipe section 330 corresponds to the second flow distribution area.

[0067] Due to the suction characteristics of the cross-flow fan 20, the air volume through the first pipe section 310 of the evaporator is usually large, and the air field flow rate is fast, which leads to low heat efficiency of the first pipe section 310. When the flow distribution plate 410 rotates, the air volume flowing through the first pipe section 310, the second pipe section 320 and the third pipe section 330 can be adjusted by rotating in the first flow distribution area and the second flow distribution area.

[0068] It should be noted that the flow distribution plate 410 is rotatably arranged at the boundary between the first flow distribution area and the second flow distribution area. When it is necessary to reduce the air volume of the first flow distribution area, the flow distribution plate 410 can be rotated to block the first flow distribution area. When it is necessary to reduce the air volume of the second flow distribution area, the flow distribution plate 410 can be rotated to block the second flow distribution area.

[0069] In this embodiment, the diverter plate 410 can rotate between a first rotation angle and a second rotation angle.

[0070] like Figure 1 As shown, when the manifold 410 rotates to the first rotation angle, the manifold 410 is perpendicular to the air inlet 110. In this state, the air blown from the first manifold zone towards the first pipe section 310 and the second pipe section 320 is fully exposed; this increases the amount of air passing through the first pipe section 310 and the second pipe section 320, which can reduce the temperature of the first pipe section 310 and the second pipe section 320 during cooling. Figure 2 As shown, when the diverter plate 410 is rotated to the second rotation angle, the diverter plate 410 is angled to the air inlet 110. At this time, the diverter plate 410 at least partially blocks the air inlet 110, thereby blocking at least part of the first diversion area and blocking the air blown from the air inlet 110 towards the first pipe section 310 and the second pipe section 320. This reduces the amount of air passing through the first pipe section 310 and the second pipe section 320, which helps to balance the airflow of each pipe section and avoids a decrease in heat exchange efficiency in the first pipe section 310 and the second pipe section 320 due to excessive airflow, or avoids the problem of excessively high temperatures in the first pipe section 310 and the second pipe section 320 during cooling.

[0071] 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.

[0072] 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 distributor 40 plays a crucial role. Through the precise cooperation of the rotatable distributor plate 410 and the drive mechanism 420, the distributor 40 can adjust the airflow entering each pipe section according to actual needs. The distributor plate 410 can rotate between a first rotation angle and a second rotation angle; this design allows the air conditioner to flexibly adjust the airflow distribution according to actual requirements.

[0073] 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:

[0074] Step S110: Obtain the first temperature detected by the first temperature sensor, the second temperature detected by the second temperature sensor, and the third temperature detected by the third temperature sensor.

[0075] Step S120: Adjust the splitter based on the first difference between the first temperature and the second temperature and the second difference between the second temperature and the third temperature to regulate the air volume at the first pipe section, the second pipe section and the third pipe section.

[0076] In this embodiment, the controller first acquires the detected first temperature, second temperature, and third temperature from the first temperature sensor, the second temperature sensor, and the third 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, the second temperature sensor is located in the second pipe section, and the third temperature sensor is located in the third pipe section.

[0077] Next, the controller calculates the first difference between the first temperature and the second temperature, and the second difference between the second temperature and the third temperature. These differences reflect the temperature differences between different zones and serve as the basis for adjusting the airflow distribution.

[0078] Then, the controller adjusts the splitter based on the calculated first and second differences. The 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 rotation angle of the splitter, the airflow at the first, second, and third pipe sections can be changed.

[0079] By continuously adjusting the distributor, the controller can gradually reduce temperature differences between zones, achieving a uniform indoor temperature distribution. Simultaneously, the controller can dynamically adjust the distributor's state based on the user's set temperature and real-time changes in the indoor environment to meet the user's personalized needs.

[0080] 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.

[0081] like Figure 7 As shown, step S120: adjusting the flow divider based on the first difference between the first temperature and the second temperature and the second difference between the second temperature and the third temperature to adjust the air volume at the first pipe section, the second pipe section and the third pipe section, includes: adjusting the angle between the flow divider plate and the boundary line between the first flow divider area and the second flow divider area to a first preset angle based on the first difference and the second difference.

[0082] Specifically, in the initial state, the shunt plate is perpendicular to the air inlet. The controller first calculates a first difference A between the first temperature T1 and the second temperature T2, and a second difference B between the second temperature T2 and the third temperature T3. The two differences respectively represent the temperature difference between the first pipe section and the second pipe section, and the temperature difference between the second pipe section and the third pipe section. A is the first difference, which is the absolute value of the difference between the first temperature T1 and the second temperature T2; B is the first difference, which is the absolute value of the difference between the second temperature T2 and the third temperature T3.

[0083] Next, the controller determines the included angle between the shunt plate and the demarcation line on the first shunt area and the second shunt area, i.e. the first preset angle a, according to the calculated first difference A and second difference B. In this embodiment, the calculation formula of the first preset angle a is: a = 90° x (A / (A+B)). This formula converts the temperature difference into an angle value, and changes the air volume distribution of different pipe sections by adjusting the angle of the shunt plate.

[0084] According to this formula, when the first difference A is larger, it means that the temperature difference between the first pipe section and the second pipe section is larger, and at this time the angle of the shunt plate should be closer to the first shunt area to reduce the air volume passing through the first pipe section; when the second difference B is larger, it means that the temperature difference between the second pipe section and the third pipe section is larger, and at this time the angle of the shunt plate should be closer to the demarcation line to increase the air volume entering the first pipe section and the second pipe section.

[0085] When adjusting the angle of the shunt plate, the controller can realize it through an electric actuator or a mechanical transmission mechanism. Once the angle of the shunt plate is adjusted in place, the air volume entering the first pipe section, the second pipe section and the third pipe section will change accordingly, so as to realize the uniform distribution of indoor temperature.

[0086] In some embodiments, as shown in Figure 6 and Figure 7 , the control method further comprises:

[0087] Step S130: obtaining a fourth temperature detected by the first temperature sensor, a fifth temperature detected by the second temperature sensor, and a sixth temperature detected by the third temperature sensor.

[0088] Step S140: adjusting the rotation angle of the shunt plate based on a third difference between the fourth temperature and the fifth temperature, and a fourth difference between the fifth temperature and the sixth temperature.

[0089] After the initial adjustment of the air volume, in order to ensure the effect, the controller obtains the temperature data detected by the first temperature sensor, the second temperature sensor and the third temperature sensor again, which are respectively recorded as the fourth temperature T4, the fifth temperature T5 and the sixth temperature T6. The temperature data obtained this time is the temperature value under the new steady state of the indoor environment after the initial adjustment of the angle of the shunt plate.

[0090] Next, the controller calculates a third difference C between the fourth temperature T4 and the fifth temperature T5, and a fourth difference D between the fifth temperature T5 and the sixth temperature T6. These two differences reflect the temperature differences that still exist between the pipe sections after the preliminary adjustment.

[0091] Based on the calculated third difference C and fourth difference D, the controller further adjusts the rotation angle of the flow distribution plate. The purpose of this step is to fine-tune the air volume distribution to further reduce the temperature differences between the regions, achieving more accurate temperature control.

[0092] In adjusting the rotation angle of the flow distribution plate, the controller can use a similar method as in step S120. That is, according to the proportional relationship of the third difference and the fourth difference, the included angle between the flow distribution plate and the boundary line is determined. Specifically, a rotation angle mapping table or a calculation formula corresponding to the difference proportion can be set to achieve accurate control of the rotation angle of the flow distribution plate.

[0093] Through these steps, the control method of the air conditioner indoor unit provided by the present application can achieve accurate adjustment of the indoor temperature distribution. First, by preliminarily adjusting the angle of the flow distribution plate, the indoor temperature distribution reaches a relatively uniform state; then, by re-detecting the temperature and fine-tuning the rotation angle of the flow distribution plate, the temperature differences between the regions are further reduced, improving the uniformity of the temperature and the comfort of the user.

[0094] In an embodiment, as shown in FIG. 1, step S140: adjusting the rotation angle of the flow distribution plate based on the third difference between the fourth temperature and the fifth temperature and the fourth difference between the fifth temperature and the sixth temperature, includes: Figure 7

[0095] Step S1401: determining the temperature difference of the third difference and the fourth difference.

[0096] Step S1402: matching the temperature interval corresponding to the temperature difference; wherein each temperature interval corresponds to an adjustment parameter.

[0097] Step S1403: adjusting the included angle between the flow distribution plate and the boundary line to the second preset angle based on the adjustment parameter, the third difference and the fourth difference.

[0098] The controller first determines the temperature difference of the third difference C and the fourth difference D. The third difference C represents the difference between the fourth temperature T4 and the fifth temperature T5, while the fourth difference D represents the difference between the fifth temperature T5 and the sixth temperature T6. These two differences can reflect the temperature differences that still exist between the temperature monitoring points after the preliminary adjustment.

[0099] ​Then, the controller matches the calculated third difference T3 and fourth difference T4 with preset temperature intervals. These temperature intervals are set in advance according to experimental data and empirical values, and each temperature interval corresponds to a specific adjustment parameter. By matching the interval in which the temperature difference lies, the controller can select the corresponding adjustment parameter to guide the subsequent adjustment of the shunt plate angle.

[0100] Based on the matched adjustment parameter and the third and fourth differences, the controller calculates a second preset angle β. The calculation formula is: β = 90° × (kC / (k×C+D)), where k is the adjustment parameter, C is the absolute value of the fourth temperature and fifth temperature difference, and D is the absolute value of the fifth temperature and sixth temperature difference. This formula takes into account the size of the temperature difference and the influence of the adjustment parameter, and can obtain a more reasonable shunt plate rotation angle.

[0101] Finally, the controller adjusts the included angle between the shunt plate and the dividing line according to the calculated second preset angle β. By accurately controlling the rotation angle of the shunt plate, the air volume distribution of each pipe section can be further fine-tuned, thereby achieving more accurate temperature control.

[0102] It should be noted that in actual application, the setting of temperature intervals and the selection of adjustment parameters need to be considered comprehensively according to specific air conditioner models, room structure and user demand, etc.

[0103] In this embodiment, the adjustment parameter is positively correlated with the absolute value of the temperature difference.

[0104] In a specific embodiment, the temperature difference ΔT = |C-D|. C is the absolute value of the fourth temperature and fifth temperature difference, and D is the absolute value of the fifth temperature and sixth temperature difference.

[0105] When 0 ≤ ΔT ≤ 1 Celsius degree, the adjustment parameter K = 1, and the second preset angle β = 90° × (C / (C+D)) at this time.

[0106] When 1 ≤ ΔT ≤ 2 Celsius degrees, the adjustment parameter K = 2, and the second preset angle β = 90° × (2C / (2C+D)) at this time.

[0107] When 2 ≤ ΔT ≤ 3 Celsius degrees, the adjustment parameter K = 4, and the second preset angle β = 90° × (4C / (4C+D)) at this time.

[0108] When 3 ≤ ΔT ≤ 4 Celsius degrees, the adjustment parameter K = 7, and the second preset angle β = 90° × (7C / (7C+D)) at this time.

[0109] When 4 < ΔT Celsius degrees, the adjustment parameter K = 10, and the second preset angle β = 90° × (10C / (10C+D)) at this time.

[0110] Once the adjustment parameter K is determined, the control system can use the formula β = 90° x (K x C / (K x C + D)) to calculate the second preset angle β. This formula takes into account the size of the temperature difference and the influence of the adjustment parameter, ensuring that the angle adjustment of the flow distribution plate accurately reflects the distribution of indoor temperature.

[0111] Finally, the controller adjusts the included angle between the flow distribution plate and the boundary line according to the calculated second preset angle β. In this way, fine adjustment of the air volume of each pipe section can be achieved, thereby more accurately controlling the indoor temperature distribution and improving user comfort.

[0112] According to the controller provided by the fourth aspect of the present application, please refer to Figure 8 , comprising:

[0113] The acquisition module 810 is configured to acquire the first temperature detected by the first temperature sensor, the second temperature detected by the second temperature sensor, and the third temperature detected by the third temperature sensor.

[0114] The adjustment module 820 is configured to adjust the flow distributor based on the first difference between the first temperature and the second temperature and the second difference between the second temperature and the third temperature, so as to adjust the air volume at the first pipe section, the second pipe section, and the third pipe section.

[0115] It should be noted that the above steps S110 to S120 and other steps are only for convenience of description and do not constitute a time sequence limitation of each step in the control method of the air conditioner indoor unit. Moreover, some of the contents are provided in the control method of the third aspect of the present application, which are described in detail in the third aspect of the present application. All the contents in the control method can also be applied to the embodiments provided in the fourth aspect of the present application, and further, to avoid repetition, the contents in the controller provided in the fourth aspect of the present application are not described in detail. Similarly, the contents in the above two aspects of the present application can be used to explain the contents of all the following aspects of the present application, and therefore, the repeated contents in the following embodiments are not described in detail. The technical effects of the controller provided in the embodiments of the present application correspond to the technical effects of the control method described above, and therefore, are not described in detail here.

[0116] The air conditioner provided by the fifth aspect of the present application comprises a memory, a processor, and a computer program stored in the memory and executable on the processor, and the processor executes the program to realize the steps of the control method of the air conditioner indoor unit provided by the embodiments of the present application.

[0117] Figure 9An example of an entity structure diagram of an electronic device can include: a processor 910, a communications interface 920, a memory 930, and a communications bus 940, wherein the processor 910, the communications interface 920, and the memory 930 complete mutual communication through the communications bus 940. The processor 910 can invoke a logical instruction in the memory 930 to execute a control method of an air conditioner indoor unit, the method including: obtaining a first temperature detected by a first temperature sensor, a second temperature detected by a second temperature sensor, and a third temperature detected by a third temperature sensor; and adjusting a flow divider based on a first difference between the first temperature and the second temperature and a second difference between the second temperature and the third temperature, to adjust air volume at the first pipe section, the second pipe section, and the third pipe section.

[0118] In addition, the logical instructions in the memory 930 described above can be implemented in the form of a software functional unit and sold or used as an independent product, and can be stored in a computer-readable storage medium. Based on this understanding, the technical solutions of the present application essentially or the part that contributes to the prior art or part of the technical solutions can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a plurality of instructions to make a computer device (which can be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the method described in various embodiments of the present application. The aforementioned storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM, Read-Only Memory), a random access memory (RAM, Random Access Memory), a magnetic disk or an optical disk, and various program code storage media.

[0119] The device embodiments described above are only schematic, wherein the units described as separate components can or can not be physically separated, and the components displayed as units can or can not be physical units, i.e., they can be located in one place, or distributed on multiple network units. Part or all of the modules can be selected according to actual needs to achieve the purpose of the present embodiment. Those skilled in the art can understand and implement without creative labor.

[0120] Those skilled in the art can clearly understand the implementation of the various embodiments by means of software and necessary universal hardware platforms through the description of the above embodiments, and of course, the implementation can also be through hardware. Based on such understanding, the above technical solutions can be embodied in the form of a software product, and the computer software product can be stored in a computer readable storage medium, such as a ROM / RAM, a magnetic disk, an optical disk, etc., and includes a plurality of instructions to make a computer device (which can be a personal computer, a server, or a network device, etc.) execute the method described in each embodiment or some parts of the embodiment.

[0121] The above merely describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A control method of an air conditioner indoor unit, characterized by, The air conditioner indoor unit comprises: a shell formed with an air duct, the air duct being provided with an air inlet and an air outlet at two ends respectively; a cross-flow fan arranged in the air duct; an indoor heat exchanger comprising a first pipe section, a second pipe section and a third pipe section connected in sequence, the first pipe section, the second pipe section and the third pipe section being arranged in the air duct; a flow divider rotatably arranged at the air inlet and arranged opposite to the second pipe section; the flow divider comprises a flow dividing plate; the air inlet is provided with a first flow dividing area and a second flow dividing area, and the flow dividing plate is rotatably arranged at the boundary line between the first flow dividing area and the second flow dividing area; the first pipe section corresponds to the first flow dividing area, a part of the second pipe section corresponds to the first flow dividing area, another part of the second pipe section corresponds to the second flow dividing area, and the third pipe section corresponds to the second flow dividing area; a first temperature sensor, a second temperature sensor, a third temperature sensor and a controller, the first temperature sensor being arranged at the first pipe section, the second temperature sensor being arranged at the second pipe section, the third temperature sensor being arranged at the third pipe section, and the controller being electrically connected with the flow divider, the first temperature sensor, the second temperature sensor and the third temperature sensor to control the flow divider to adjust the air volume of the first pipe section, the second pipe section and the third pipe section by detecting temperature; a control method of the air conditioner indoor unit comprises: obtaining a first temperature detected by the first temperature sensor, a second temperature detected by the second temperature sensor and a third temperature detected by the third temperature sensor; adjusting the flow divider based on a first difference value between the first temperature and the second temperature and a second difference value between the second temperature and the third temperature to adjust the air volume at the first pipe section, the second pipe section and the third pipe section, including: based on the first difference value and the second difference value, adjusting the included angle between the flow dividing plate and the boundary line on the first flow dividing area and the second flow dividing area to a first preset angle; the first preset angle α = 90° × (A / (A+B)); A is the first difference value, which is the absolute value of the difference between the first temperature and the second temperature; B is the first difference value, which is the absolute value of the difference between the second temperature and the third temperature; obtaining a fourth temperature detected by the first temperature sensor, a fifth temperature detected by the second temperature sensor and a sixth temperature detected by the third temperature sensor; adjusting the rotation angle of the flow dividing plate based on a third difference value between the fourth temperature and the fifth temperature and a fourth difference value between the fifth temperature and the sixth temperature, including: determining the temperature difference value of the third difference value and the fourth difference value; matching the temperature interval corresponding to the temperature difference value; wherein each temperature interval corresponds to an adjustment parameter; based on the adjustment parameter, the third difference value and the fourth difference value, adjusting the included angle between the flow dividing plate and the boundary line to a second preset angle; the second preset angle β = 90° × (kC / (kC+D)), k is the adjustment parameter; C is the third difference value, which is the absolute value of the difference between the fourth temperature and the fifth temperature; D is the fourth difference value, which is the absolute value of the difference between the fifth temperature and the sixth temperature.

2. The control method according to claim 1, characterized by, The adjustment parameter is positively correlated with the absolute value of the temperature difference value.

3. The control method according to claim 1, characterized by, The flow divider further comprises a driving mechanism; The flow divider is rotatably arranged at the air inlet and opposite to the second pipe section; the driving mechanism is electrically connected with the controller, and a driving end of the driving mechanism is connected with the flow divider for driving the flow divider to rotate so as to adjust the air volume flowing through the first pipe section, the second pipe section and the third pipe section.

4. The control method according to claim 1, characterized by, The flow divider is rotatable between a first rotation angle and a second rotation angle; When the flow divider rotates to the first rotation angle, the flow divider is perpendicular to the air inlet so as to completely expose the air blown by the first flow dividing area to the first pipe section and the second pipe section; When the flow divider rotates to the second rotation angle, the flow divider at least blocks part of the air inlet so as to block at least part of the first flow dividing area.

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