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 cross-flow fan, an indoor heat exchanger, a flow divider, a first temperature sensor, a second temperature sensor and a controller. The shell is formed with an air duct. The cross-flow fan is arranged in the air duct. The indoor heat exchanger comprises a first pipe section, a second pipe section and a third pipe section which are sequentially communicated. The first pipe section, the second pipe section and the third pipe section are arranged in the air duct. The flow divider is rotatably arranged in the air duct and located between an air inlet and the first pipe section and is arranged opposite to the first pipe section. The first temperature sensor is arranged in the first pipe section. The second temperature sensor is arranged in the second pipe section and / or the third pipe section. The controller is electrically connected with the flow divider, the first temperature sensor and the second temperature sensor. The air conditioner indoor unit provided by the application can accurately control the rotation angle of the flow divider by detecting different pipe temperatures, so as to accurately adjust the air volume distribution in the air duct.

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 in the air duct between the air inlet and the first tube section and arranged opposite to the first tube section;

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

[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 in the air duct between the air inlet and the first pipe section and opposite to the first 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 at the first pipe section.

[0013] According to one embodiment of the present application, the flow divider plate is rotatable between a first rotation angle and a second rotation angle.

[0014] When the flow divider plate rotates to the first rotation angle, the flow divider plate is perpendicular to the air inlet so as to expose the air blown from the air inlet to the first pipe section;

[0015] When the flow divider plate rotates to the second rotation angle, the flow divider plate is parallel to the air inlet so as to block the air blown from the air inlet to the first pipe section.

[0016] According to the air conditioner provided by the second embodiment of the present application, the air conditioner comprises the air conditioner indoor unit.

[0017] According to the control method of the air conditioner indoor unit provided by the third embodiment of the present application, the method comprises:

[0018] obtaining a first temperature detected by a first temperature sensor and a second temperature detected by a second temperature sensor;

[0019] adjusting the flow divider based on a first difference between the first temperature and the second temperature so as to adjust the air volume at the first pipe section.

[0020] 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 so as to adjust the air volume at the first pipe section comprises:

[0021] determining the first difference between the first temperature and the second temperature;

[0022] adjusting a rotation angle of the flow divider plate based on the first difference and a preset value;

[0023] when the first difference is greater than the preset value, controlling the flow divider plate to rotate to be parallel to the air inlet;

[0024] when the first difference is less than or equal to the preset value, controlling the flow divider plate to rotate to have a preset angle with the air inlet.

[0025] According to one embodiment of the present application, the preset angle is positively related to the absolute value of the first difference, alpha = A * absolute value of delta T.

[0026] Wherein, alpha is the preset angle, A is an adjustment coefficient, and delta T is the first difference.

[0027] According to one embodiment of the present application, after the step of adjusting the flow divider based on the first difference between the first temperature and the second temperature to adjust the air volume at the first pipe section, the method further comprises:

[0028] Obtaining a third temperature detected by a first temperature sensor and a fourth temperature detected by a second temperature sensor;

[0029] Determining a second difference between the third temperature and the fourth temperature, and adjusting the rotation angle of the flow divider plate based on the preset angle.

[0030] According to one embodiment of the present application, the step of determining the second difference between the third temperature and the fourth temperature and adjusting the rotation angle of the flow divider plate based on the preset angle comprises:

[0031] Matching a temperature interval corresponding to the second difference; wherein each temperature interval corresponds to an adjustment angle;

[0032] Based on the adjustment angle corresponding to the temperature interval, controlling the rotation of the flow divider plate based on the preset angle.

[0033] According to one embodiment of the present application, the adjustment angle is positively related to the absolute value of the second difference.

[0034] The air conditioner indoor unit provided by the present application precisely controls the rotation angle of the flow divider by detecting different pipe temperatures, thereby realizing precise adjustment of the air volume distribution in the air duct. This makes the air flow of 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 the 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

[0035] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the related art, the drawings needed to be used in the embodiments or related art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0036] Figure 1 The structural schematic diagram of the air conditioner indoor unit provided by the present application is shown in the figure.

[0037] Figure 2 A schematic view of rotation of a flow divider in an indoor unit of an air conditioner according to an embodiment of the present application;

[0038] Figure 3 A schematic view of rotation of a flow divider in an indoor unit of an air conditioner according to an embodiment of the present application;

[0039] Figure 4 A flow chart of a control method of an indoor unit of an air conditioner according to an embodiment of the present application;

[0040] Figure 5 A schematic view of a control method of an indoor unit of an air conditioner according to an embodiment of the present application;

[0041] Figure 6 A schematic structural view of a controller according to an embodiment of the present application;

[0042] Figure 7 A schematic structural view of an air conditioner according to an embodiment of the present application.

[0043] Reference signs:

[0044] 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; 610, obtaining module; 620, adjusting module; 810, processor; 820, communication interface; 830, memory; 840, communication bus. DETAILED DESCRIPTION

[0045] In order to make the objectives, technical solutions and advantages of the present application clearer, the technical solutions in the present application will be described clearly below with reference to the drawings in the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of the present application.

[0046] In the description of the embodiments of the present application, it should be noted that the terms "center", "longitudinal", "lateral", "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 for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the embodiments of the present application. In addition, the terms "first", "second", "third" are only for the purpose of description and cannot be understood as indicating or implying relative importance.

[0047] In the description of the embodiments of the present 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 skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0048] In the embodiments of the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature 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.

[0049] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, 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 one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine the different embodiments or examples described in the present application and the features of the different embodiments or examples without contradiction.

[0050] According to the air conditioner indoor unit provided by the first aspect of the present application, the air conditioner indoor unit comprises Figures 1 to 3As shown, the air conditioner indoor unit comprises a housing 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 and a controller.

[0051] In this embodiment, the housing 10 is the main structure of the air conditioner indoor unit, which forms an air duct for air circulation. The air duct has an air inlet 110 and an air outlet 120 at two ends respectively. The air inlet 110 is used to suck indoor air, and the air outlet 120 is used to discharge treated air, thereby realizing the circulation of indoor air.

[0052] 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.

[0053] 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 passing air, thereby realizing the functions of refrigeration or heating.

[0054] The flow divider 40 is one of the key components of the present application, which is rotatably arranged in the air duct between the air inlet 110 and the first pipe section 310 and is arranged opposite to the first pipe section 310. By adjusting the rotation angle of the flow divider 40, the air volume entering the first pipe section 310 can be controlled, thereby realizing accurate regulation and control of air field distribution.

[0055] The first temperature sensor 50, the second temperature sensor 60 and the controller The first temperature sensor 50 is arranged in the first pipe section 310 for detecting the temperature at the first pipe section 310. The second temperature sensor 60 is arranged in the second pipe section 320 or the third pipe section 330 for detecting the temperature of these pipe sections. The controller is electrically connected with the flow divider 40, the first temperature sensor 50 and the second temperature sensor 60, and these temperature sensors provide accurate temperature data for the controller, so that the controller can accurately adjust the rotation angle of the flow divider 40 according to these data to control the flow divider 40 to adjust the air volume at the first pipe section 310.

[0056] In actual application, the controller can judge the heat exchange efficiency of each pipe section of the indoor heat exchanger 30 according to the temperature difference detected by the first temperature sensor 50 and the second temperature sensor 60, and adjust the rotation angle of the flow divider 40 accordingly.

[0057] For example, as shown in FIG. 2, the controller can judge the heat exchange efficiency of the first pipe section 310 according to the temperature difference between the first temperature sensor 50 and the second temperature sensor 60, and adjust the rotation angle of the flow divider 40 according to the heat exchange efficiency. Figure 3As shown, in the refrigeration 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 flow divider 40 to rotate to a position parallel to the air inlet 110, reduce the amount of air blowing to the first pipe section 310, and reduce its temperature.

[0058] The air conditioner indoor unit provided by the application can accurately control the rotation angle of the flow divider by detecting different pipe temperatures, and realize accurate adjustment of the air volume distribution in the air duct. This makes the air flow of 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 the heat exchange efficiency, but also makes the refrigeration or heating effect more uniform, significantly improving the use effect of the air conditioner.

[0059] In an example, as shown in the figure, Figures 1 to 3 The flow divider 40 includes a flow dividing plate 410 and a driving mechanism 420. The flow dividing plate 410 is rotatably arranged in the air duct, the flow dividing plate 410 is located between the air inlet 110 and the first pipe section 310, and the flow dividing plate 410 is arranged opposite to the first pipe section 310. By changing the rotation angle of the flow dividing plate 410, the flow area of the air duct can be controlled, thereby realizing accurate adjustment of the air volume.

[0060] The driving mechanism 420 is electrically connected with the controller, the driving end of the driving mechanism 420 is connected with the flow dividing plate 410, and the driving mechanism 420 is used for driving the flow dividing plate 410 to rotate, so as to adjust the air volume at the first pipe section 310. 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 dividing plate 410. Through cooperation with the controller, the driving mechanism 420 can accurately adjust the position of the flow dividing plate 410 according to the control instruction, thereby realizing fine control of the air volume distribution.

[0061] In actual operation process, the controller will calculate the air volume distribution to be adjusted according to the temperature data detected by the temperature sensor. Then, the controller will send a control instruction to the driving mechanism 420, and the driving mechanism 420 will drive the flow dividing plate 410 to rotate to the corresponding angle after receiving the instruction. By continuously adjusting the position of the flow dividing plate 410, the air volume at the first pipe section 310 can be accurately adjusted, so as to optimize the air flow distribution and improve the heat exchange efficiency.

[0062] In this embodiment, the flow dividing plate 410 can rotate between the first rotation angle and the second rotation angle.

[0063] As shown in the figure, Figure 2As shown, in the case where the flow distributor 410 is rotated to the first rotation angle, the flow distributor 410 is perpendicular to the air inlet 110. In this state, the air blown into the first pipe segment 310 by the air inlet 110 is exposed, so that more air is guided to the first pipe segment 310. This increases the amount of air passing through the first pipe segment 310, which can reduce the temperature of the first pipe segment 310 during refrigeration. As shown in FIG. 4B, when the flow distributor 410 is rotated to the second rotation angle, the flow distributor 410 is parallel to the air inlet 110. At this time, the flow distributor 410 blocks the air blown into the first pipe segment 310 by the air inlet 110. This reduces the amount of air passing through the first pipe segment 310, which helps to balance the air flow of each pipe segment, avoids the problem of heat exchange efficiency reduction of the first pipe segment 310 due to excessive air flow, or avoids the problem of excessively high temperature of the first pipe segment 310 during refrigeration. Figure 3 As shown, in the case where the flow distributor 410 is rotated to the first rotation angle, the flow distributor 410 is perpendicular to the air inlet 110. In this state, the air blown into the first pipe segment 310 by the air inlet 110 is exposed, so that more air is guided to the first pipe segment 310. This increases the amount of air passing through the first pipe segment 310, which can reduce the temperature of the first pipe segment 310 during refrigeration. As shown in FIG. 4B, when the flow distributor 410 is rotated to the second rotation angle, the flow distributor 410 is parallel to the air inlet 110. At this time, the flow distributor 410 blocks the air blown into the first pipe segment 310 by the air inlet 110. This reduces the amount of air passing through the first pipe segment 310, which helps to balance the air flow of each pipe segment, avoids the problem of heat exchange efficiency reduction of the first pipe segment 310 due to excessive air flow, or avoids the problem of excessively high temperature of the first pipe segment 310 during refrigeration.

[0064] According to the air conditioner provided by the second aspect of the present application, as shown in FIG. 4A, Figures 1 to 3 As shown, the air conditioner comprises the air conditioner indoor unit described above.

[0065] The air conditioner indoor unit serves as a core component of the air conditioner, and its performance directly affects the operation effect of the entire air conditioner. By introducing the air conditioner indoor unit with precise air volume control function, the air conditioner provided by the embodiment of the present application has been significantly improved in heat exchange efficiency, energy consumption control, and operation stability, etc. In the air conditioner indoor unit, the flow distributor 40 plays a crucial role. Through the precise cooperation of the rotatable flow distributor 410 and the driving mechanism 420, the flow distributor 40 can adjust the air volume entering each pipe segment according to actual needs. The flow distributor 410 can be rotated between the first rotation angle and the second rotation angle, which enables the air conditioner to flexibly adjust the air volume distribution according to actual needs. When it is necessary to increase the air volume of the first pipe segment 310, the flow distributor 410 is rotated to the position perpendicular to the air inlet 110; and when it is necessary to reduce the air volume of the first pipe segment 310, the flow distributor 410 is rotated to the position parallel to the air inlet 110. This precise air volume control helps to achieve efficient operation of the air conditioner.

[0066] According to the control method of the air conditioner indoor unit provided by the third aspect of the present application, as shown in FIG. 4C, Figure 4 As shown, the control method comprises the following steps:

[0067] Step S110: obtaining a first temperature detected by a first temperature sensor and a second temperature detected by a second temperature sensor.

[0068] Step S120: adjusting the flow distributor based on the first difference between the first temperature and the second temperature, to adjust the air volume at the first pipe segment.

[0069] After the air conditioner starts working, the controller first acquires the first and second temperatures detected by two temperature sensors (i.e., the first temperature sensor and the second temperature sensor) installed at different locations on the indoor unit. The first temperature is the temperature of the indoor heat exchanger at the first pipe section, and the second temperature is the temperature of the indoor heat exchanger at the second pipe section and / or the third pipe section. These two temperatures are crucial for subsequent airflow adjustment.

[0070] After acquiring the detection data from the two temperature sensors, the controller calculates the first difference between the two temperatures. This difference reflects the unevenness of the temperature distribution inside the indoor unit of the air conditioner. Based on this first difference, the controller intelligently adjusts the operating state of the splitter, changing the angle of the splitter plate, thereby regulating the airflow entering the first duct section.

[0071] Specifically, if the difference between the first temperature and the second temperature is large, it indicates that the temperature distribution inside the indoor unit of the air conditioner is relatively uneven. In this case, the controller may adjust the airflow into the first pipe section by adjusting the splitter to balance the temperature distribution and improve heat exchange efficiency. Conversely, if the temperature difference is small, it indicates that the temperature distribution is relatively uniform. The controller may maintain the current state of the splitter or make fine adjustments to maintain this good temperature distribution.

[0072] In this way, the control method of the present invention can precisely adjust the airflow of each pipe section according to the real-time temperature distribution inside the air conditioner indoor unit, thereby achieving a more efficient and energy-saving heat exchange process. This not only improves the performance of the air conditioner indoor unit, but also enhances the user's comfort experience.

[0073] like Figure 5 As shown, step S120: adjusting the splitter based on the first difference between the first temperature and the second temperature to regulate the airflow at the first pipe section includes:

[0074] Step S1210: Determine the first difference between the first temperature and the second temperature.

[0075] Step S1220: Adjust the rotation angle of the splitter plate based on the first difference and the preset value.

[0076] Step S1230: When the first difference is greater than the preset value, control the splitter plate to rotate until it is parallel to the air inlet.

[0077] Step S1240: When the first difference is less than or equal to the preset value, control the splitter plate to rotate to the preset angle with the air inlet.

[0078] After the air conditioner is turned on, the controller calculates the first difference between the first temperature detected by the first temperature sensor and the second temperature detected by the second temperature sensor. This difference reflects the temperature difference between different areas of the indoor heat exchanger inside the indoor unit of the air conditioner.

[0079] The controller then compares the first difference with a preset value. The preset value is determined according to the design parameters of the air conditioner indoor unit, performance requirements, and actual operating environment, etc., and is used to determine whether the rotation angle of the flow divider needs to be adjusted and the size of the adjustment angle.

[0080] For example, in the process of air conditioner refrigeration, if the first difference is greater than the preset value (for example, 6 degrees Celsius), it means that the temperature at the first pipe section is relatively high, and the air volume of the pipe section needs to be reduced to improve the heat exchange efficiency. Therefore, the controller controls the flow divider to rotate to a position parallel to the air inlet, that is, to rotate 90 degrees, so as to increase the blockage of the air volume of the first pipe section and avoid excessive air flowing to the first pipe section.

[0081] If the first difference is less than or equal to the preset value, it means that the temperature at the first pipe section is moderate or low, and does not need too much air volume. At this time, the controller controls the flow divider to rotate to a preset angle with the air inlet. The preset angle is determined according to the absolute value of the first difference, and is calculated by a formula α = A x |ΔT|. Wherein, α is the preset angle, A is the adjustment coefficient (for example, 15), and ΔT is the first difference. This formula ensures that the preset angle is positively correlated with the absolute value of the first difference, that is, the greater the temperature difference, the smaller the angle between the flow divider and the air inlet to increase the air volume of the first pipe section; the smaller the temperature difference, the smaller the angle to balance the air volume of each pipe section.

[0082] In some embodiments, as shown in FIG. 1B, after the step S120 of adjusting the flow divider based on the first difference between the first temperature and the second temperature to adjust the air volume at the first pipe section, the method further comprises: Figure 5

[0083] Step S130: obtaining a third temperature detected by the first temperature sensor and a fourth temperature detected by the second temperature sensor.

[0084] Step S140: determining a second difference between the third temperature and the fourth temperature, and adjusting the rotation angle of the flow divider based on the preset angle.

[0085] After adjusting the flow divider for the first time, the controller obtains temperature information from the first temperature sensor and the second temperature sensor again. The temperatures obtained this time are referred to as the third temperature and the fourth temperature respectively. These new temperature data reflect the changes in the temperature distribution inside the air conditioner indoor unit after the flow divider is adjusted.

[0086] The controller then calculates the first difference between the third temperature and the fourth temperature, that is, the second difference. This difference reflects the new state of the temperature distribution of the indoor heat exchanger after the flow divider is adjusted.

[0087] ​Based on this second difference value, the controller will fine-tune the rotation angle of the flow distribution plate based on the previously determined preset angle. This fine-tuning is to further optimize the temperature distribution inside the air conditioner indoor unit and improve the heat exchange efficiency. The specific adjustment strategy can be set according to actual conditions, for example, if the second difference value is still large, indicating that the temperature distribution is still uneven, the flow distribution plate can be further adjusted to reduce the difference; if the second difference value is small, indicating that the temperature distribution is already relatively uniform, the current state of the flow distribution plate can be maintained or fine-tuned.

[0088] Based on the above embodiments, in an embodiment, step S140: determining the second difference value between the third temperature and the fourth temperature, the step of adjusting the rotation angle of the flow distribution plate based on the preset angle includes:

[0089] Step S1410: matching the temperature interval corresponding to the second difference value.

[0090] Step S1420: controlling the rotation of the flow distribution plate based on the preset angle based on the adjustment angle corresponding to the temperature interval.

[0091] Specifically, in this step, the controller first determines the temperature interval to which the second difference value belongs according to the size of the second difference value. These temperature intervals are pre-set, and each interval corresponds to a specific adjustment angle. The advantage of this is that the corresponding adjustment strategy can be quickly determined according to the size range of the temperature difference, avoiding the complex calculation process for each specific difference value.

[0092] The setting of the temperature interval can be adjusted according to actual needs, for example, smaller temperature intervals can be set to obtain more precise control effect, or larger temperature intervals can be set to simplify the control logic. The adjustment angle corresponding to each temperature interval is also determined according to the design parameters, performance requirements and actual operating environment of the air conditioner indoor unit, aiming to achieve optimal heat exchange effect and energy efficiency.

[0093] After determining the temperature interval to which the second difference value belongs, the controller will look up the adjustment angle corresponding to the interval. This adjustment angle indicates how many degrees of adjustment are needed for the rotation angle of the flow distribution plate under the current temperature distribution state.

[0094] Then, the controller will add this adjustment angle to the previously determined preset angle to obtain a new rotation angle, and control the flow distribution plate to rotate to this new angle. In this way, the rotation angle of the flow distribution plate can be accurately adjusted according to the real-time temperature distribution to further optimize the heat exchange effect of the air conditioner indoor unit.

[0095] In this way, the control method can realize accurate control of the temperature distribution inside the air conditioner indoor unit. By matching the temperature interval and the corresponding adjustment angle, the appropriate adjustment strategy can be quickly determined, and fine tuning can be performed on the basis of the preset angle to ensure that the air conditioner indoor unit can maintain high heat exchange efficiency in different operating states. This not only improves energy efficiency, but also improves user experience.

[0096] It should be noted that the adjustment angle is positively correlated with the absolute value of the second difference. For example, during the refrigeration process of the air conditioner, the angle after the initial adjustment is α.

[0097] If the second difference is detected to be ≤0.5℃, the corresponding adjustment angle is 0, and the angle continues to be maintained as α.

[0098] If the second difference is detected to be 0.5℃< the second difference ≤1℃, the corresponding adjustment angle is 1, and the angle is adjusted to α+1.

[0099] If the second difference is detected to be 1℃< the second difference ≤2℃, the corresponding adjustment angle is 2, and the angle is adjusted to α+2.

[0100] If the second difference is detected to be 2℃< the second difference ≤3℃, the corresponding adjustment angle is 4, and the angle is adjusted to α+4.

[0101] If the second difference is detected to be 3℃< the second difference ≤4℃, the corresponding adjustment angle is 6, and the angle is adjusted to α+6.

[0102] If the second difference is detected to be 4℃< the second difference ≤5℃, the corresponding adjustment angle is 8, and the angle is adjusted to α+8.

[0103] According to the controller provided by the fourth aspect of the present application, please refer to Figure 6 , comprising:

[0104] The acquisition module 610 is configured to acquire the first temperature detected by the first temperature sensor and the second temperature detected by the second temperature sensor.

[0105] The adjustment module 620 is configured to adjust the flow divider based on the first difference between the first temperature and the second temperature to adjust the air volume at the first pipe section.

[0106] It should be noted that the above steps S110 to S120 and other steps are only for convenient 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 embodiment. Details are described in the third aspect embodiment, and the contents in all control methods can also be applicable to the embodiments provided in the fourth aspect embodiment. Furthermore, in order to avoid repetition, the contents in the fourth aspect embodiment are not described in detail. Similarly, the contents in the above two aspect embodiments can be used to explain the contents of all the following aspect embodiments, so the repeated contents in the following embodiments are not described. The controller provided in the embodiments of the present application has the same technical effects as the above-mentioned control method, which will not be repeated here.

[0107] According to the air conditioner provided in the fifth aspect embodiment of the present application, the air conditioner 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 in the embodiments of the present application.

[0108] Figure 7 An example of a physical structure diagram of an electronic device can include a processor 810, a communications interface 820, a memory 830 and a communication bus 840, wherein the processor 810, the communications interface 820 and the memory 830 complete mutual communication through the communication bus 840. The processor 810 can call the logical instructions in the memory 830 to execute the control method of the air conditioner indoor unit, which comprises: acquiring a first temperature detected by a first temperature sensor and a second temperature detected by a second temperature sensor; and adjusting a flow divider based on a first difference between the first temperature and the second temperature to adjust the air volume at the first pipe section.

[0109] In addition, the logic instructions in the memory 830 described above can be implemented in the form of software functional units and sold or used as independent products, and can be stored in a computer readable storage medium. Based on such understanding, the technical solutions of the present application essentially or the parts that contribute to the prior art or parts of the technical solutions can be embodied in the form of a software product. The computer software product is stored in a storage medium, and includes several instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage medium includes various media that can store program codes, such as a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, etc.

[0110] The device embodiments described above are only schematic, wherein the units described as separate components can or can not be physically separate, and the components displayed as units can or can not be physical units, i.e., can be located in one place, or can be distributed on multiple network units. Some 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.

[0111] From the above description of the embodiments, those skilled in the art can clearly understand that the embodiments can be implemented by means of software and the necessary general hardware platform, and of course can also be implemented by hardware. Based on such understanding, the above technical solutions essentially or the parts that contribute to the prior art can be embodied in the form of a software product. 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 several instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in the various embodiments or some parts of the embodiments.

[0112] The above only 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 principles 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 is arranged in the air duct; An indoor heat exchanger comprises 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 comprises a flow dividing plate; the flow dividing plate is rotatably arranged in the air duct between the air inlet and the first pipe section and is arranged opposite to the first pipe section; the flow dividing plate is rotatable between a first rotation angle and a second rotation angle; in the case that the flow dividing plate is rotated to the first rotation angle, the flow dividing plate is perpendicular to the air inlet to expose air blown from the air inlet to the first pipe section; in the case that the flow dividing plate is rotated to the second rotation angle, the flow dividing plate is parallel to the air inlet to block air blown from the air inlet to the first pipe section; A first temperature sensor is arranged in the first pipe section, a second temperature sensor is arranged in the second pipe section and / or the third pipe section, and a controller is electrically connected with the flow divider, the first temperature sensor and the second temperature sensor to control the flow divider to adjust the air volume at the first pipe section by detecting temperature; The control method of the air conditioner indoor unit comprises: obtaining a first temperature detected by the first temperature sensor and a second temperature detected by the second temperature sensor; adjusting the flow dividing plate based on a first difference between the first temperature and the second temperature to adjust the air volume at the first pipe section, comprising: determining the first difference between the first temperature and the second temperature; adjusting the rotation angle of the flow dividing plate based on the first difference and a preset value; when the first difference is greater than the preset value, controlling the flow dividing plate to rotate to be parallel to the air inlet; when the first difference is less than or equal to the preset value, controlling the flow dividing plate to rotate to an included angle of a preset angle with the air inlet; obtaining a third temperature detected by the first temperature sensor and a fourth temperature detected by the second temperature sensor; determining a second difference between the third temperature and the fourth temperature, and adjusting the rotation angle of the flow dividing plate based on the preset angle.

2. The control method according to claim 1, characterized by, The preset angle is positively correlated with the absolute value of the first difference, α=A×︱ΔT︱; wherein α is the preset angle, A is an adjustment coefficient, and ΔT is the first difference.

3. The control method according to claim 1, characterized by, The step of determining the second difference between the third temperature and the fourth temperature and adjusting the rotation angle of the flow dividing plate based on the preset angle comprises: matching a temperature interval corresponding to the second difference; each temperature interval corresponds to an adjustment angle; controlling the flow dividing plate to rotate based on the adjustment angle corresponding to the temperature interval on the basis of the preset angle.

4. The control method according to claim 3, characterized by The adjustment angle is positively correlated with the absolute value of the second difference.

5. The control method according to claim 1, characterized by, The flow divider further comprises a driving mechanism. The driving mechanism is electrically connected with the controller, and a driving end of the driving mechanism is connected with the shunt plate, for driving the shunt plate to rotate, so as to adjust the air volume at the first pipe section.

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