Air conditioner indoor unit and its control method

Abstract

This invention provides an indoor unit for an air conditioner and its control method. The indoor unit includes multiple interconnected heat exchanger sections, each with a corresponding airflow actuation device. The airflow actuation device promotes the formation of airflow through the corresponding heat exchanger section. The control method includes: determining whether the outlet airflow temperature of the indoor unit is uniform; if not, adjusting the operating parameters of the airflow actuation device to adjust the heat exchange efficiency of each heat exchanger section, thereby achieving uniform outlet airflow temperature. Using the above method, the indoor unit of this invention can promptly take remedial measures when uneven outlet airflow temperature occurs, ensuring that the outlet airflow achieves essentially uniform temperature, thereby improving the uniformity of the outlet airflow temperature of the indoor unit.

Description

Technical Field

[0001] This invention relates to air conditioning technology, and in particular to indoor units of air conditioners and their control methods. Background Technology

[0002] In the field of air conditioning technology, when it is necessary to regulate the temperature of an indoor space, the compression refrigeration system of the air conditioning equipment can be activated. This allows the heat exchanger of the compression refrigeration system to exchange heat with the flowing airflow, forming a heat-exchange airflow that is then supplied to the indoor space. To ensure heat exchange efficiency, the heat exchanger needs to be configured with a large volume to increase the heat exchange area.

[0003] However, the inventors realized that due to the large size of the heat exchanger, uneven heat exchange often occurs, which leads to uneven temperature of the heat exchanger, resulting in temperature stratification and uneven temperature of the outlet airflow, affecting the user experience.

[0004] The information disclosed in this background section is only intended to enhance the understanding of the background technology of this application, and therefore may include prior art that is not known to those skilled in the art. Summary of the Invention

[0005] One object of the present invention is to overcome at least one technical defect in the prior art and to provide an indoor unit of an air conditioner and a control method thereof.

[0006] A further objective of this invention is to enable timely remedial measures to be taken when uneven airflow temperature occurs in the indoor unit of an air conditioner, thereby improving the uniformity of the airflow temperature in the indoor unit.

[0007] Another further objective of the present invention is to precisely regulate the temperature of each heat exchanger section so that the outlet airflow achieves essentially uniform temperature.

[0008] Another further objective of this invention is to improve the temperature control effect of the indoor unit of an air conditioner and reduce or avoid errors.

[0009] In particular, according to one aspect of the present invention, a control method for an indoor unit of an air conditioner is provided, the indoor unit comprising a plurality of connected heat exchanger sections, each heat exchanger section being correspondingly provided with an airflow actuation device, the airflow actuation device being used to induce the formation of airflow flowing through the corresponding heat exchanger section, and the control method comprising:

[0010] Determine whether the temperature of the airflow from the indoor unit of the air conditioner is uniform;

[0011] If not, adjust the operating parameters of the airflow actuator to adjust the heat exchange efficiency of each heat exchanger section, thereby making the outlet airflow temperature uniform.

[0012] Optionally, the step of determining whether the outlet airflow temperature of the indoor unit of the air conditioner is uniform includes:

[0013] Obtain the real-time value of the coil temperature of each heat exchanger section;

[0014] The uniformity of the outlet airflow temperature is determined based on the real-time values ​​of the coil temperatures of each heat exchanger section.

[0015] Optionally, the step of determining whether the outlet airflow temperature is uniform based on the real-time value of the coil temperature of each heat exchanger section includes:

[0016] Obtain the expected values ​​of the coil temperature for each of the heat exchanger sections;

[0017] Determine whether the real-time value of the coil temperature of each heat exchanger section is consistent with the expected value;

[0018] If not, then it is determined that the temperature of the outlet airflow is uneven.

[0019] Optionally, the step of obtaining the expected value of the coil temperature of each of the heat exchanger sections includes:

[0020] Obtain the air outlet temperature of the indoor unit of the air conditioner;

[0021] According to the preset mapping relationship, the expected value of the coil temperature of each heat exchanger section is calculated based on the outlet temperature.

[0022] Optionally, the step of adjusting the operating parameters of the airflow actuation device includes:

[0023] The heat exchanger sections where the real-time value of the coil temperature is higher than the expected value and the heat exchanger sections where the real-time value of the coil temperature is lower than the expected value are respectively denoted as the high-temperature section and the low-temperature section.

[0024] Obtain the temperature control mode of the indoor unit of the air conditioner;

[0025] The operating parameters of the airflow actuation device corresponding to the high-temperature range and the low-temperature range are adjusted according to the temperature adjustment mode.

[0026] Optionally, the step of adjusting the operating parameters of the airflow actuation device corresponding to the higher temperature range according to the temperature adjustment mode includes:

[0027] In cooling mode, the rotational speed of the airflow actuator corresponding to the higher section is increased; and / or in heating mode, the rotational speed of the airflow actuator corresponding to the higher section is decreased.

[0028] Optionally, the step of adjusting the operating parameters of the airflow actuation device corresponding to the lower temperature range according to the temperature adjustment mode includes:

[0029] In cooling mode, the rotational speed of the airflow actuator corresponding to the lower section is reduced; and / or in heating mode, the rotational speed of the airflow actuator corresponding to the lower section is increased.

[0030] Optionally, after adjusting the operating parameters of the airflow actuation device, the method further includes:

[0031] Obtain the range of real-time values ​​of the coil temperature of each heat exchanger section;

[0032] Determine whether the range shows a decreasing trend;

[0033] If not, then further adjust the operating parameters of the airflow actuation device.

[0034] Optionally, the control method further includes:

[0035] Obtain the temperature control start signal of the indoor unit of the air conditioner to begin adjusting the indoor temperature; and

[0036] After a set time interval, a step is performed to determine whether the temperature of the airflow from the indoor unit of the air conditioner is uniform.

[0037] According to another aspect of the present invention, an indoor unit of an air conditioner is also provided, the indoor unit comprising a plurality of connected heat exchanger sections, each heat exchanger section being provided with a corresponding airflow actuation device, the airflow actuation device being used to induce the formation of airflow flowing through the corresponding heat exchanger section, and the indoor unit further comprising:

[0038] A processor and a memory, wherein the memory stores a machine-executable program, which, when executed by the processor, is used to implement the control method according to any one of the above.

[0039] The air conditioner indoor unit and its control method of the present invention determine whether the outlet airflow temperature of the air conditioner indoor unit is uniform, and adjust the operating parameters of the airflow actuator when the outlet airflow temperature is uneven, so as to adjust the heat exchange efficiency of each heat exchanger section. This allows the air conditioner indoor unit to take remedial measures in time when the outlet airflow temperature is uneven, thereby improving the uniformity of the outlet airflow temperature of the air conditioner indoor unit.

[0040] Furthermore, the air conditioner indoor unit and its control method of the present invention, when the air conditioner indoor unit has uneven airflow temperature, adjusts the operating parameters of the airflow actuator to adjust the heat exchange efficiency of each heat exchanger section. Compared with the scheme of improving the uniformity of airflow temperature by mixing air, the scheme of the present invention can accurately adjust the temperature of each heat exchanger section, so that the airflow is essentially uniform in temperature.

[0041] Furthermore, the air conditioner indoor unit and its control method of the present invention adjust the heat exchange efficiency of each heat exchanger section by adjusting the operating parameters of the airflow actuation device. Since the temperature of multiple heat exchanger sections can be kept consistent, the airflow flowing through the heat exchanger sections will not change temperature due to air mixing. Therefore, the uncertainty of the outlet airflow temperature is reduced, which is beneficial to improving the temperature control effect of the air conditioner indoor unit and reducing or avoiding errors.

[0042] The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments of the invention in conjunction with the accompanying drawings. Attached Figure Description

[0043] The following sections will describe some specific embodiments of the invention in detail by way of example and not limitation, with reference to the accompanying drawings. The same reference numerals in the drawings denote the same or similar parts or portions. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:

[0044] Figure 1 This is a schematic block diagram of an indoor unit of an air conditioner according to an embodiment of the present invention;

[0045] Figure 2 This is a schematic structural diagram of an indoor unit of an air conditioner according to an embodiment of the present invention;

[0046] Figure 3 This is a schematic structural diagram of the heat exchange assembly of an indoor unit of an air conditioner according to an embodiment of the present invention;

[0047] Figure 4 yes Figure 3 A magnified view of a section at point A in the middle;

[0048] Figure 5 This is a schematic side view of the heat exchanger of the heat exchange assembly of an indoor unit of an air conditioner according to an embodiment of the present invention;

[0049] Figure 6 This is a schematic diagram of a control method for an indoor unit of an air conditioner according to an embodiment of the present invention;

[0050] Figure 7 This is a control flowchart of an indoor unit of an air conditioner according to an embodiment of the present invention;

[0051] Figure 8 This is a schematic cross-sectional view of the heat exchange assembly of an indoor unit of an air conditioner according to an embodiment of the present invention;

[0052] Figure 9 yes Figure 8 A magnified view of a section at point B in the middle;

[0053] Figure 10This is a schematic structural diagram of an airflow actuation device for a heat exchange assembly of an indoor unit of an air conditioner according to an embodiment of the present invention;

[0054] Figure 11 This is a schematic structural diagram of the base of the heat exchange assembly of an indoor unit of an air conditioner according to an embodiment of the present invention;

[0055] Figure 12 yes Figure 11 A schematic front view of the base of the heat exchange assembly of the indoor unit of an air conditioner. Detailed Implementation

[0056] Reference will now be made in detail to embodiments of the invention, one or more of which are illustrated in the accompanying drawings. The various embodiments provided are intended to explain the invention and not to limit it. In fact, various modifications and variations to the invention will be apparent to those skilled in the art without departing from the scope or spirit of the invention. For example, a feature illustrated or described as part of one embodiment may be used with another embodiment to produce yet another embodiment. Therefore, the invention is intended to cover such modifications and variations within the scope of the appended claims and their equivalents.

[0057] The following reference Figures 1 to 12 The present invention describes an indoor unit 20 of an air conditioner and its control method according to an embodiment of the present invention. The terms "horizontal," "vertical," "inner," "outer," "axial," and "circumferential," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are used only for the purpose of facilitating and simplifying the description of the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0058] In the description of this embodiment, it should be understood that the term "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified. When a feature "includes or contains" one or more of the features it covers, unless otherwise specifically described, this indicates that other features are not excluded and may be further included.

[0059] In the description of this embodiment, the terms "one embodiment," "some embodiments," "example," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0060] This invention provides an indoor unit 20 for an air conditioner. Figure 1This is a schematic block diagram of an indoor unit 20 of an air conditioner according to an embodiment of the present invention. The indoor unit 20 is the indoor part of a split-type room air conditioner, used to regulate indoor air, such as cooling / heating, dehumidification, and introducing fresh air.

[0061] The indoor unit 20 of an air conditioner generally includes multiple connected heat exchanger sections 210, an airflow actuation device 300, a processor 110, and a memory 120, and may further include a casing 21. Each heat exchanger section 210 is provided with a corresponding airflow actuation device 300, which is used to induce airflow through the corresponding heat exchanger section 210.

[0062] The memory 120 and processor 110 can form part of the main control board of the indoor unit 20 of the air conditioner. The memory 120 stores a machine-executable program 121, which, when executed by the processor 110, is used to implement the control method of the indoor unit 20 of the air conditioner according to any of the following embodiments. The processor 110 can be a central processing unit (CPU), a digital processing unit (DSP), etc. The memory 120 is used to store the program executed by the processor 110. The memory 120 can be any medium capable of carrying or storing desired program code in the form of instructions or data structures and accessible by a computer, but is not limited thereto. The memory 120 can also be a combination of various types of memory. Since the machine-executable program 121, when executed by the processor 110, implements the various processes of the following method embodiments and achieves the same technical effects, it will not be described again here to avoid repetition.

[0063] Multiple heat exchanger sections 210 are connected to form a multi-section heat exchanger, such as a multi-section finned heat exchanger. Figure 2 This is a schematic structural diagram of an air conditioner indoor unit 20 according to an embodiment of the present invention. The diagram is provided for clarity in illustrating the internal structure of the air conditioner indoor unit 20. Figure 2 Part of the casing 21 of the indoor unit 20 of the air conditioner is omitted. For example... Figure 2 As shown, there are three heat exchanger sections 210, and the heat exchanger 200 is a three-section heat exchanger. However, it should be understood that the number of heat exchanger sections 210 is not limited to the three illustrated in the figures. Based on the understanding of the embodiments of this disclosure, those skilled in the art should be able to easily extend and modify the solutions of the embodiments of this disclosure, and such extensions and modifications should all fall within the protection scope of this invention.

[0064] like Figure 2 As shown, the indoor unit 20 of the air conditioner can be wall-mounted, but is not limited to this. It should be understood that the technical solution of this embodiment of the invention can be applied to many air conditioning devices other than wall-mounted indoor units, such as floor-standing units, window units, etc.

[0065] The heat exchanger 200 in this embodiment can be used as an evaporator or condenser in a compression refrigeration system. The indoor unit 20 of the air conditioner in this embodiment can be an indoor unit of an air conditioner that performs cooling / heating through a compression refrigeration cycle system, and it also includes a blower fan 23. The heat exchanger 200 is disposed within the casing 21 and is used to exchange heat with the airflow flowing through it under the action of the blower fan 23, forming a heat exchange airflow, i.e., cold air or hot air. Figure 2 As shown, the air supply fan 23 can be a cross-flow fan.

[0066] The airflow actuation device 300 can be in multiple sets, and each set corresponds to a heat exchanger section 210. Figure 3 This is a schematic structural diagram of the heat exchange assembly 10 of an indoor unit 20 of an air conditioner according to an embodiment of the present invention. Figure 4 yes Figure 3 A magnified view of a portion of point A in the image. (See image below.) Figure 3-4 As shown, each heat exchanger section 210 is provided with a set of airflow actuation devices 300 for each corresponding airflow actuation zone, which are used to promote the formation of airflow flowing through the corresponding airflow actuation zone. That is, a set of airflow actuation devices 300 is provided for each heat exchanger section 210, and the set of airflow actuation devices 300 corresponding to the heat exchanger section 210 is used to promote the formation of airflow flowing through the airflow actuation zone of that heat exchanger section 210.

[0067] In this embodiment, a group of airflow actuation devices 300 may include one or more airflow actuation devices 300, and all airflow actuation devices 300 corresponding to a heat exchanger section 210 form a group. The airflow actuation device 300 may be a power device capable of driving airflow, such as a fan or a blower, but is not limited thereto.

[0068] By setting an airflow actuation zone that connects to the external space of the heat exchanger section 210 within the heat exchanger section 200, and using the airflow actuation device 300 to guide the airflow, an airflow is formed that flows through the airflow actuation zone. This allows the airflow to flow through the interior of the heat exchanger section 210 and exchange heat. This is equivalent to pioneering a completely new heat exchange method, no longer limited to using only the outer surface of the heat exchanger section 210 for heat exchange. This is beneficial to improving the heat exchange uniformity of the heat exchanger 200 and making the air outlet temperature of the air conditioner uniform.

[0069] In this embodiment, each heat exchanger section 210 is provided with a set of airflow actuation devices 300 corresponding to its airflow actuation zone. The assembly method between the airflow actuation devices 300 and their corresponding airflow actuation zones is not specifically limited in this embodiment. For example, the airflow actuation devices 300 can be located within the airflow actuation zone to achieve the corresponding arrangement; alternatively, the airflow actuation devices 300 can be located outside the airflow actuation zone and connected to the airflow within it to achieve the corresponding arrangement. In this case, the air outlet or air inlet of the airflow actuation devices 300 can be connected to the airflow actuation zone.

[0070] The airflow actuation zone can be set in the gap between adjacent coils 212 in the heat exchanger section 210 so that the coils 212 can fully exchange heat with the airflow flowing through the airflow actuation zone. Figure 4 The image shows coil 212.

[0071] In some preferred embodiments, the airflow actuation device 300 is rotatably disposed within the corresponding airflow actuation zone to generate airflow thrust when rotated, thereby promoting the formation of airflow through the corresponding airflow actuation zone.

[0072] When the airflow actuation device 300 is rotatably and controllably installed in the airflow actuation zone, the airflow actuation device 300 can fully exert its flow-guiding function, accurately regulate the airflow flow rate and velocity through the airflow actuation zone, and make the heat exchange process of the heat exchanger 200 more controllable.

[0073] For example, the airflow actuation device 300 can rotate about its central axis, thereby generating airflow thrust along its central axis direction during rotation. The central axis of the airflow actuation device 300 can be coaxially arranged with the central axis of the airflow actuation zone.

[0074] In other embodiments, the airflow actuation device 300 may also be a miniature centrifugal fan or other types of fans, as long as they can drive airflow from the external space of the heat exchanger section 210 into the airflow actuation zone, or drive the airflow in the airflow actuation zone to the external space of the heat exchanger section 210.

[0075] The airflow actuation device 300 can rotate under the drive of a power component; for example, the airflow actuation device 300 can be connected to the power component via a transmission connection. The power component can be located in the external space of the heat exchanger section 210 and adjacent to the heat exchanger section 210 to shorten the connection path. The power component may include a motor 500.

[0076] In some optional embodiments, the airflow actuation zone includes at least one channel 211 penetrating the corresponding heat exchanger section 210. Each channel 211 may penetrate the heat exchanger section 210 in any direction (e.g., the length direction, width direction, thickness direction, or oblique direction of the heat exchanger section 210). Each channel 211 is provided with a corresponding airflow actuation device 300, and the airflow actuation devices 300 in each channel 211 of a heat exchanger section 210 form a group. That is, in a group of airflow actuation devices 300, one airflow actuation device 300 occupies one channel 211 of the heat exchanger section 210 corresponding to that group of airflow actuation devices 300.

[0077] Figure 5 This is a schematic side view of the heat exchanger 200 of the heat exchange assembly 10 of an air conditioner indoor unit 20 according to an embodiment of the present invention. Figure 5As shown, channel 211 can extend along the length of heat exchanger section 210. For example... Figure 2 As shown, the length direction of heat exchanger section 210 can be parallel to the x-axis direction.

[0078] When a through-channel 211 is opened in the heat exchanger section 210 and each channel 211 is equipped with an airflow actuation device 300, the heat exchange area of ​​the heat exchanger section 210 can be further increased to a certain extent, thereby increasing the heat exchange efficiency of the heat exchanger 200 and achieving rapid temperature regulation. In particular, when multiple channels 211 are opened in the heat exchanger section 210, internal heat exchange can be achieved in multiple parts of the heat exchanger section 210, which helps to further reduce the temperature difference between multiple parts of the heat exchanger section 210 and fully ensure the uniformity of the outlet air temperature.

[0079] The number of channels 211 can be set according to the size, location, and / or orientation of the heat exchanger section 210. When the location of the heat exchanger section 210 is relatively concealed and does not easily receive airflow, or when the size of the heat exchanger section 210 is large, or when the orientation of the heat exchanger section 210 is special and the airflow flowing through it does not fully contact it, the number of channels 211 can be appropriately increased, for example, it can be set to two, three, or more; conversely, the number of channels 211 can be appropriately reduced.

[0080] This invention also provides a control method for an indoor unit 20 of an air conditioner. Figure 6 This is a schematic diagram of a control method for an indoor unit 20 of an air conditioner according to an embodiment of the present invention. The control method generally includes the following steps:

[0081] Step S602: Determine whether the outlet airflow temperature of the indoor unit 20 of the air conditioner is uniform. The outlet airflow temperature of the indoor unit 20 refers to the temperature of the airflow flowing out of the air outlet of the indoor unit 20. Since the outlet airflow needs to exchange heat with the heat exchanger 200 before flowing out of the air outlet, if the temperature is inconsistent at different points in the heat exchanger 200, it may lead to uneven outlet airflow temperature. The air outlet may be formed on the lower front side of the casing 21.

[0082] There are several ways to determine whether the temperature of the air outlet air of the indoor unit 20 of the air conditioner is uniform. For example, multiple temperature sensors can be installed at different locations near the air outlet of the indoor unit 20 (e.g., upstream of the air outlet), and the temperature of the air outlet air at each location can be detected by these sensors. If the detection results of the temperature sensors are inconsistent, it can be determined that the temperature of the air outlet air of the indoor unit 20 is not uniform. Alternatively, temperature detectors can be installed on multiple heat exchanger sections 210 of the heat exchanger 200, and the temperature of each heat exchanger section 210 can be detected by these detectors. If the detection results of the temperature detectors are inconsistent, it can be determined that the temperature of the air outlet air of the indoor unit 20 is not uniform.

[0083] Step S604: If not, adjust the operating parameters of the airflow actuator 300 to adjust the heat exchange efficiency of each heat exchanger section 210, thereby ensuring uniform outlet airflow temperature. The operating parameters of the airflow actuator 300 may include any one or a combination of the following parameters: rotational speed, air pressure, airflow volume, power, and efficiency. By adjusting the operating parameters of the airflow actuator 300, the flow rate and velocity of the airflow passing through each heat exchanger section 210 can be adjusted, thereby achieving the purpose of adjusting the heat exchange efficiency of each heat exchanger section 210.

[0084] It should be noted that in the step of adjusting the operating parameters of the airflow actuation device 300 to adjust the heat exchange efficiency of each heat exchanger section 210, the operating parameters of all airflow actuation devices 300 can be adjusted; of course, the operating parameters of the airflow actuation devices 300 corresponding to a few or a certain heat exchanger section 210 can also be selectively adjusted. Under the action of these airflow actuation devices 300, the flow rate and velocity of the airflow flowing through other heat exchanger sections 210 will obviously also be adjusted.

[0085] Using the above method, by judging whether the outlet airflow temperature of the indoor unit 20 of the air conditioner is uniform, and adjusting the operating parameters of the airflow actuator 300 when the outlet airflow temperature is uneven, the heat exchange efficiency of each heat exchanger section 210 can be adjusted. This allows the indoor unit 20 of the air conditioner to take remedial measures in time when the outlet airflow temperature is uneven, thereby improving the uniformity of the outlet airflow temperature of the indoor unit 20 of the air conditioner.

[0086] When the airflow temperature of the indoor unit 20 of the air conditioner is uneven, the heat exchange efficiency of each heat exchanger section 210 can be adjusted by adjusting the operating parameters of the airflow actuator 300. Compared with the solution of improving the uniformity of the airflow temperature by mixing air, the solution of this embodiment can accurately adjust the temperature of each heat exchanger section 210, so that the airflow is essentially uniform in temperature.

[0087] The inventors recognized that when the outlet airflow temperature of the indoor unit 20 of the air conditioner is uneven, mixing the outlet airflow before blowing it out does not fundamentally solve the problem of uneven outlet airflow temperature, and may even lead to more serious temperature imbalances in different heat exchanger sections 210 or different parts of the heat exchanger 200. In view of this, the present invention creatively provides an airflow actuation device 300 for each heat exchanger section 210, and promptly adjusts the operating parameters of the airflow actuation device 300 when uneven outlet airflow temperature occurs in the indoor unit 20 of the air conditioner. This effectively controls the temperature of each heat exchanger section 210, fundamentally solving the problem of uneven outlet airflow temperature, and has the advantage of significant control effect, breaking the conventional thinking of existing technologies.

[0088] It is important to emphasize that in existing technologies, heat exchanger 200 can only exchange heat with the surrounding air using its outer surface. However, the inventors recognized that due to the large volume of heat exchanger 200, the positions and orientations of heat exchange sections in different parts of heat exchanger 200 vary, resulting in different airflow rates received by different parts. This leads to uneven heat exchange in heat exchanger 200, causing temperature stratification of the outlet airflow. The technical solution of this invention breaks through the conventional heat exchange method of heat exchanger 200, creatively providing a completely new heat exchange method. By improving the structure of heat exchanger 200 and using airflow actuation device 300 for auxiliary airflow guidance, internal heat exchange of heat exchanger 200 can be achieved. Furthermore, heat exchange can be implemented by combining internal and external heat exchange, providing a solution for improving the airflow effect of air conditioners, increasing the uniformity of outlet air temperature, and improving heat exchange efficiency.

[0089] The heat exchange efficiency of each heat exchanger section 210 is adjusted by regulating the operating parameters of the airflow actuator 300. Since the temperature of multiple heat exchanger sections 210 can be kept consistent, the airflow flowing through the heat exchanger section 210 will not change temperature due to air mixing. Therefore, the uncertainty of the outlet airflow temperature is reduced, which is beneficial to improving the temperature control effect of the indoor unit 20 of the air conditioner and reducing or avoiding errors.

[0090] In some optional embodiments, the step of determining whether the outlet airflow temperature of the indoor unit 20 of the air conditioner is uniform includes: obtaining the real-time value of the coil temperature of each heat exchanger section 210, and determining whether the outlet airflow temperature is uniform based on the real-time value of the coil temperature of each heat exchanger section 210.

[0091] For example, each heat exchanger section 210 can be equipped with a temperature detector on its coil 212 to detect the real-time value of the coil temperature of its respective coil 212. In some embodiments, a pipe clamp 600 is welded to the intermediate joint of each branch coil 212 of each heat exchanger section 210 for installing the temperature detector.

[0092] In the step of determining whether the airflow temperature is uniform based on the real-time values ​​of the coil temperatures of each heat exchanger section 210, for example, the real-time values ​​of the coil temperatures of each heat exchanger section 210 can be directly compared. If the real-time values ​​of the coil temperatures of each heat exchanger section 210 are consistent, then the airflow temperature is considered uniform. For example, if the range of the real-time values ​​of the coil temperatures of each heat exchanger section 210 is less than a preset temperature difference threshold, then the real-time values ​​of the coil temperatures of each heat exchanger section 210 are considered consistent. The temperature difference threshold can be preset to any value within the range of 0 to 3℃.

[0093] In some alternative embodiments, the step of determining whether the outlet airflow temperature is uniform based on the real-time values ​​of the coil temperatures of each heat exchanger section 210 includes: obtaining the expected values ​​of the coil temperatures of each heat exchanger section 210; determining whether the real-time values ​​of the coil temperatures of each heat exchanger section 210 are consistent with the expected values; if not, then determining that the outlet airflow temperature is non-uniform. The expected values ​​of the coil temperatures of each heat exchanger section 210 may be the same or different.

[0094] For example, the expected value of the coil temperature of each heat exchanger section 210 can be determined based on the set temperature of the indoor unit 20 of the air conditioner. The set temperature of the indoor unit 20 refers to the temperature to which the indoor space will be adjusted, which can be set by the user or determined by the indoor unit 20 itself. In some optional embodiments, the expected value of the coil temperature of each heat exchanger section 210 corresponding to each set temperature can be determined based on the position, size, and orientation of each heat exchanger section 210. For example, in cooling mode, when the position of the heat exchanger section 210 is relatively concealed and does not easily receive airflow, or when the size of the heat exchanger section 210 is large, or when the orientation of the heat exchanger section 210 is special and the airflow flowing through it does not fully contact it, the expected value of the coil temperature can be appropriately increased; conversely, the expected value of the coil temperature can be appropriately decreased.

[0095] Using the above method, the uniformity of the outlet airflow temperature can be determined by judging whether the real-time value of the coil temperature of each heat exchanger section 210 is consistent with the expected value. The judgment can be made in combination with the actual heat exchange situation of the heat exchanger section 210, so that the judgment process and adjustment process are more in line with the actual adjustment needs of the heat exchanger section 210, and play a role in precise control.

[0096] In some optional embodiments, the expected values ​​of the coil temperatures of each heat exchanger section 210 are the same. The step of obtaining the expected values ​​of the coil temperatures of each heat exchanger section 210 may include: obtaining the outlet temperature of the indoor unit 20 of the air conditioner, and calculating the expected values ​​of the coil temperatures of each heat exchanger section 210 based on the outlet temperature according to a preset mapping relationship.

[0097] For example, a temperature sensor can be installed at the air outlet of the indoor unit 20 of the air conditioner, and this temperature sensor can be located near the downstream section of the air outlet. The air outlet can be located on the lower front side of the casing 21 of the indoor unit 20 of the air conditioner. The temperature sensor can be located on the lower edge of the air outlet, and the detected value of the temperature sensor can reflect the average temperature of the airflow after heat exchange with each heat exchanger section 210.

[0098] A certain temperature difference ΔT can exist between the expected values ​​of the outlet temperature and the coil temperatures of each heat exchanger section 210. The mapping relationship can be set according to the magnitude of the temperature difference ΔT. The magnitude of this temperature difference ΔT can be determined through multiple experiments. In cooling mode, the outlet temperature is higher than the expected values ​​of the coil temperatures of each heat exchanger section 210. In this case, Tp = Tc - ΔT can be set, where Tp represents the expected value of the coil temperature of each heat exchanger section 210, Tc represents the outlet temperature, and ΔT represents the temperature difference between the two, which is a constant. In heating mode, the outlet temperature is lower than the expected values ​​of the coil temperatures of each heat exchanger section 210. In this case, Tp = Tc + ΔT can be set, where Tp represents the expected value of the coil temperature of each heat exchanger section 210, Tc represents the outlet temperature, and ΔT represents the temperature difference between the two, which is a constant.

[0099] Using the above method, the expected values ​​of the coil temperatures of each heat exchanger section 210 are deduced from the air outlet temperature of the indoor unit 20 of the air conditioner. Then, based on the calculated expected values ​​of the coil temperatures, it is determined whether the airflow temperature is uniform. This makes the judgment result of whether the air outlet temperature is uniform more consistent with the actual operating conditions of the indoor unit 20 of the air conditioner.

[0100] In some optional embodiments, the step of adjusting the operating parameters of the airflow actuation device 300 includes: determining heat exchanger sections 210 where the real-time coil temperature is higher than the expected value and heat exchanger sections 210 where the real-time coil temperature is lower than the expected value, denoted as the high-temperature section and the low-temperature section, respectively; obtaining the temperature control mode of the indoor unit 20 of the air conditioner; and adjusting the operating parameters of the airflow actuation device 300 corresponding to the high-temperature section and the low-temperature section according to the temperature control mode. The temperature control mode of the indoor unit 20 of the air conditioner may include a cooling mode and a heating mode.

[0101] In the step of adjusting the operating parameters of the airflow actuator 300 corresponding to the high and low sections according to the temperature adjustment mode, each temperature adjustment mode may correspond to an airflow adjustment method for the high and low sections, so as to adjust the operating parameters of the corresponding airflow actuator 300 based on the airflow adjustment method.

[0102] Using the above method, after identifying the high-temperature zone where the real-time value of the coil temperature is too high and the low-temperature zone where the real-time value of the coil temperature is too low, the heat exchange efficiency of the high-temperature zone and the low-temperature zone can be changed by adjusting the flow rate and flow velocity of the airflow through the high-temperature zone and the low-temperature zone, thereby making the temperature of the entire heat exchanger 200 uniform.

[0103] In some optional embodiments, the step of adjusting the operating parameters of the airflow actuator 300 corresponding to the higher temperature range according to the temperature control mode includes: in cooling mode, reducing the rotation speed of the airflow actuator 300 corresponding to the higher temperature range; and / or in heating mode, increasing the rotation speed of the airflow actuator 300 corresponding to the higher temperature range.

[0104] In some optional embodiments, the step of adjusting the operating parameters of the airflow actuator 300 corresponding to the lower temperature range according to the temperature control mode includes: increasing the rotation speed of the airflow actuator 300 corresponding to the lower temperature range in cooling mode; and / or decreasing the rotation speed of the airflow actuator 300 corresponding to the lower temperature range in heating mode.

[0105] For example, after starting the cooling mode, all airflow actuators 300 can rise to the default speed N within a preset time (e.g., 3 minutes), where N is a fixed value; then, it begins to determine whether the outlet airflow temperature of the indoor unit 20 of the air conditioner is uniform. If the real-time value of the coil temperature of the heat exchanger section 210 is higher than the expected value, the speed of the corresponding airflow actuator 300 is reduced at a preset rate (e.g., 5 r / s) until it reaches the preset minimum speed and is maintained; when the outlet airflow temperature of the indoor unit 20 of the air conditioner reaches uniformity, the airflow actuator 300 can be increased at a preset rate (e.g., 5 r / s) based on the current speed until it reaches the preset maximum speed and is maintained, or the temperature of the outlet airflow temperature of the indoor unit 20 of the air conditioner is determined again, and this cycle repeats. If the real-time value of the coil temperature in heat exchanger section 210 is lower than the expected value, the rotation speed of the corresponding airflow actuator 300 will increase at a preset rate (e.g., 5 r / s) until it reaches the preset maximum speed and is maintained. When the airflow temperature of the indoor unit 20 of the air conditioner becomes uniform, the airflow actuator 300 can be reduced at a preset rate (e.g., 5 r / s) based on the current speed until it reaches the preset minimum speed and is maintained, or the uniformity of the airflow temperature of the indoor unit 20 of the air conditioner can be determined again, and this cycle can be repeated.

[0106] After the heating mode is activated, all airflow actuators 300 can reach the default speed N within a preset time (e.g., 3 minutes), where N is a fixed value. Then, it begins to determine whether the outlet airflow temperature of the indoor unit 20 is uniform. If the real-time value of the coil temperature of the heat exchanger section 210 is higher than the expected value, the speed of the corresponding airflow actuator 300 increases at a preset rate (e.g., 5 r / s) until it reaches the preset maximum speed and is maintained. When the outlet airflow temperature of the indoor unit 20 becomes uniform, the airflow actuator 300 can decrease at a preset rate (e.g., 5 r / s) based on the current speed until it reaches the preset minimum speed and is maintained, or the airflow temperature of the indoor unit 20 is determined again to be uniform, and this cycle repeats. If the real-time value of the coil temperature in heat exchanger section 210 is lower than the expected value, the speed of the corresponding airflow actuator 300 will decrease at a preset rate (e.g., 5 r / s) until it reaches the preset minimum speed and is maintained. When the airflow temperature of the indoor unit 20 of the air conditioner becomes uniform, the airflow actuator 300 can be increased at a preset rate (e.g., 5 r / s) based on the current speed until it reaches the preset maximum speed and is maintained, or the airflow temperature of the indoor unit 20 of the air conditioner is judged again to see if it is uniform, and this cycle is repeated.

[0107] Using the above method, the flow rate and flow volume of the airflow passing through each heat exchanger section 210 can be adjusted by adjusting the rotation speed of the airflow actuator 300, thereby adjusting the heat exchange efficiency of each heat exchanger section 210, which simplifies the process of controlling the uniformity of the outlet airflow temperature.

[0108] In some optional embodiments, after adjusting the operating parameters of the airflow actuator 300, the control method may further include: obtaining the range of real-time values ​​of the coil temperatures of each heat exchanger section 210; determining whether the range is decreasing; and if not, further adjusting the operating parameters of the airflow actuator 300.

[0109] For example, after adjusting the operating parameters of the airflow actuator 300, the range of real-time coil temperatures in each heat exchanger section 210 can be detected every preset time interval. If the detected range gradually decreases, the adjustment scheme can be considered effective; if the detected range does not show a decreasing trend, the adjustment scheme can be considered ineffective. In this case, by further adjusting the operating parameters of the airflow actuator 300, the adjustment scheme can be modified in a timely manner to avoid ineffective control.

[0110] In some optional embodiments, the above control method may further include: acquiring a temperature adjustment start signal for the indoor unit 20 of the air conditioner to start adjusting the indoor temperature; and after a set time interval, performing a step of judging whether the temperature of the air outlet airflow of the indoor unit 20 of the air conditioner is uniform.

[0111] After the indoor unit 20 of the air conditioner starts the temperature adjustment program and the temperature of each part of the heat exchanger 200 tends to stabilize after a set time interval, the step of judging whether the temperature of the air outlet of the indoor unit 20 of the air conditioner is uniform can be performed at this time to ensure the accuracy of the judgment process, thereby improving the adjustment effect of the subsequent adjustment process.

[0112] In some optional embodiments, the air conditioner indoor unit 20 can achieve higher technical effects through further optimization and configuration of the above steps. The control method of the air conditioner indoor unit 20 in this embodiment will be described in detail below with reference to the introduction of two optional execution processes in this embodiment. This embodiment is only an example of the execution process. In specific implementation, the execution order and operating conditions of some steps can be modified according to specific implementation requirements.

[0113] Figure 7 This is a control flowchart of an indoor unit 20 of an air conditioner according to an embodiment of the present invention. The control flow generally includes the following steps:

[0114] Step S702: Obtain the temperature adjustment start signal of the indoor unit 20 of the air conditioner to start adjusting the indoor temperature.

[0115] Step S704: After a set time interval, obtain the real-time value of the coil temperature of each heat exchanger section 210.

[0116] Step S706: Obtain the air outlet temperature of the indoor unit 20 of the air conditioner.

[0117] Step S708: According to the preset mapping relationship, calculate the expected value of the coil temperature of each heat exchanger section 210 based on the outlet temperature.

[0118] In step S710, determine whether the real-time value of the coil temperature of each heat exchanger section 210 is consistent with the expected value. If yes, proceed to step S704; otherwise, proceed to step S712.

[0119] Step S712: Determine that the outlet airflow temperature is uneven.

[0120] Step S714: Determine the heat exchanger section 210 where the real-time value of the coil temperature is higher than the expected value, and the heat exchanger section 210 where the real-time value of the coil temperature is lower than the expected value, and record them as the high-temperature section and the low-temperature section, respectively.

[0121] Step S716: Obtain the temperature control mode of the indoor unit 20 of the air conditioner.

[0122] Step S718: Adjust the operating parameters of the airflow actuator 300 corresponding to the high and low temperature ranges according to the temperature control mode.

[0123] The steps for adjusting the operating parameters of the airflow actuator 300 corresponding to the higher temperature range according to the temperature control mode include: in cooling mode, reducing the rotation speed of the airflow actuator 300 corresponding to the higher temperature range; and / or in heating mode, increasing the rotation speed of the airflow actuator 300 corresponding to the higher temperature range. The steps for adjusting the operating parameters of the airflow actuator 300 corresponding to the lower temperature range according to the temperature control mode include: in cooling mode, increasing the rotation speed of the airflow actuator 300 corresponding to the lower temperature range; and / or in heating mode, reducing the rotation speed of the airflow actuator 300 corresponding to the lower temperature range.

[0124] Step S720: Obtain the range of real-time values ​​of coil temperature for each heat exchanger section 210.

[0125] Step S722: Determine whether the range is decreasing. If yes, proceed to step S726; otherwise, proceed to step S724.

[0126] Step S724: Further adjust the operating parameters of the airflow actuator 300.

[0127] Step S726: When the above-mentioned range is less than or equal to the preset range threshold, the rotation speed of the airflow actuator 300 is adjusted to the default rotation speed.

[0128] Using the above method, the indoor unit 20 of the air conditioner can take remedial measures in a timely manner when uneven airflow temperature occurs, so that the airflow temperature is essentially uniform, thereby improving the uniformity of the airflow temperature of the indoor unit 20 of the air conditioner.

[0129] Figure 8 This is a schematic cross-sectional view of the heat exchange assembly 10 of an indoor unit 20 of an air conditioner according to an embodiment of the present invention. The figure shows the cross-section of the heat exchange assembly 10 and illustrates the assembly structure between the airflow actuation device 300 and the channel 211. Figure 9 yes Figure 8 A magnified view of section B in the middle, with section lines omitted.

[0130] When a through-channel 211 is opened in the heat exchanger section 210 and each channel 211 is equipped with an airflow actuation device 300, the heat exchange area of ​​the heat exchanger section 210 can be further increased to a certain extent, thereby increasing the heat exchange efficiency of the heat exchanger 200 and achieving rapid temperature regulation. In particular, when multiple channels 211 are opened in the heat exchanger section 210, internal heat exchange can be achieved in multiple parts of the heat exchanger section 210, which helps to further reduce the temperature difference between multiple parts of the heat exchanger section 210 and fully ensure the uniformity of the outlet air temperature.

[0131] The number of channels 211 can be set according to the size, location, and / or orientation of the heat exchanger section 210. When the location of the heat exchanger section 210 is relatively concealed and does not easily receive airflow, or when the size of the heat exchanger section 210 is large, or when the orientation of the heat exchanger section 210 is special and the airflow flowing through it does not fully contact it, the number of channels 211 can be appropriately increased, for example, it can be set to two, three, or more; conversely, the number of channels 211 can be appropriately reduced.

[0132] Each heat exchanger section 210 has a channel 211 extending along its length. Since the heat exchanger section 210 has a relatively large length, opening a channel 211 along its length and installing an airflow actuation device 300 within the channel 211 can increase the airflow through the airflow actuation zone, increase the contact time between the airflow through the airflow actuation zone and the heat exchanger 200, improve heat exchange efficiency, quickly regulate the temperature of various parts of the heat exchanger section 210, and ensure that the temperature of each part reaches uniformity in a short time.

[0133] In some alternative embodiments, the airflow actuation device 300 includes a rotating shaft 310 and a plurality of fan blades 320. Figure 10 This is a schematic structural diagram of the airflow actuation device 300 of the heat exchange assembly 10 of the indoor unit 20 of an air conditioner according to an embodiment of the present invention.

[0134] The central axis of the rotating shaft 310 is coaxial with the central axis of the channel 211, and is rotatably disposed within the channel 211 around its central axis. The fan blades 320 can be disposed on the rotating shaft 310, and thus rotate with it to generate airflow thrust.

[0135] Multiple fan blades 320 can be fixedly connected to the rotating shaft 310 or be integral with the rotating shaft 310, and are distributed at intervals along the circumference of the rotating shaft 310, for example, they can be evenly distributed at intervals along the circumference of the rotating shaft 310. The circumference of the rotating shaft 310 refers to the direction along the circumference of the rotating shaft 310. The multiple fan blades 320 being distributed at intervals along the circumference of the rotating shaft means that the multiple fan blades 320 are distributed at intervals on the arc-shaped side surface of the rotating shaft 310. The arc-shaped side surface of the rotating shaft 310 is connected between the two end faces at both ends of the axial direction of the rotating shaft 310.

[0136] With the above structure, the airflow actuator 300 can be driven to rotate in a relatively simple way. The fan blade 320 will not mechanically interfere with the inner wall of the channel 211 when it rotates, and it can generate a relatively uniform airflow thrust.

[0137] For example, the length of the shaft 310 can be approximately the same as the length of the channel 211, and the blade surface of the fan blade 320 can extend parallel to the central axis of the shaft 310. In this way, the blade surface area of ​​the fan blade 320 can be increased, and the blade surface of the fan blade 320 will hardly obstruct the airflow through the channel 211.

[0138] In some alternative embodiments, each fan blade 320 extends radially outward from the outer surface of the shaft 310, and the root of each fan blade 320 is a straight line segment extending axially along the outer surface of the shaft 310.

[0139] For example, the root length of the fan blade 320 can be approximately the same as the length of the rotating shaft 310 within the channel 211, and the blade surface of the fan blade 320 can be approximately rectangular, with the extension direction of the root of the fan blade 320 being the length direction of the blade surface. The width of the blade surface can be slightly smaller than the radius of the channel 211.

[0140] Based on the above structure, the airflow actuation device 300 can generate a large airflow thrust by rotating within the narrow space of the channel 211, thus without having to expand the size of the channel 211. In other words, good internal heat exchange can be achieved simply by opening a channel 211 with a small cross-sectional area on the heat exchanger section 210, which allows the heat exchanger section 210 to maintain high structural stability.

[0141] In other embodiments, the root of each fan blade 320 is a curved segment extending axially along the outer surface of the shaft 310. This configuration allows vortices to be generated within the channel 211 under the action of the airflow actuation device 300, thereby increasing the airflow through the channel 211.

[0142] In some alternative embodiments, the heat exchange assembly 10 may further include a plurality of bases 400. Figure 11 This is a schematic structural diagram of the base 400 of the heat exchange assembly 10 of the indoor unit 20 of an air conditioner according to an embodiment of the present invention. Figure 12 yes Figure 7 The diagram shows a schematic front view of the base 400 of the heat exchange assembly 10 of the indoor unit 20 of the air conditioner. Multiple bases 400 are provided one-to-one with channels 211 and are respectively fixed to the axial ends of the corresponding channels 211. Each channel 211 is provided with a base 400 so that the airflow actuating device 300 is rotatably mounted within the channel 211 by means of the base 400.

[0143] Each base 400 has a shaft hole 410 for inserting the end of the rotating shaft 310 into it to achieve a rotatable fit. A ventilated area 420 is formed on the base 400 to allow external air to flow into the channel 211 through it.

[0144] By specially designing the structure of the rotating shaft 310 and fan blade 320 of the airflow actuator 300, and rotatably mounting the airflow actuator 300 on the base 400, the heat exchange method of the heat exchanger 200 can be improved without changing the basic structure of the heat exchanger 200. Moreover, the added components will not occupy too much space, and have the advantages of compact structure and excellent heat exchange effect.

[0145] In some embodiments, a base 400 may be provided at each of the two axial ends of the rotating shaft 310, so that both ends of the rotating shaft 310 can be rotatably assembled with the assistance of the base 400. In other embodiments, the base 400 may be provided at one axial end of the rotating shaft 310, and the other axial end of the rotating shaft 310 may be provided with other fixing structures. For example, the fixing structure may be a cover plate that closes the opening of the channel 211, and the cover plate has an assembly hole. The other axial end of the rotating shaft 310 can be inserted into the assembly hole to achieve a rotatable fit.

[0146] In some alternative embodiments, the base 400 includes a connector 450, a coupling plate 460, and an encapsulation plate 470.

[0147] The connector 450 is a hollow cylindrical shape, and one of its axial ends is wrapped around and fixed to the opening edge of the axial end of the channel 211 to fix the base 400 to the heat exchanger section 210. The axial end of the connector 450 may have an outwardly folded annular flange, which can fit against the opening edge of the axial end of the channel 211, and a screw hole may be provided on the annular flange so that it can be fixed to the opening edge of the axial end of the channel 211 by screwing.

[0148] A portion of the cylindrical wall of the connector 450 is perforated to form a breathable area 420. For example, multiple micro-holes may be provided on the cylindrical wall to allow airflow. Alternatively, a portion of the cylindrical wall may be fully opened to allow a large volume of airflow to pass through.

[0149] The coupling plate 460 is fixed inside the cylinder of the connector 450 and has a shaft hole 410 thereon. The shaft hole 410 is opposite to the opening at the axial end of the channel 211, and the central axis of the shaft hole 410 is coaxial with the central axis of the rotating shaft 310. In some embodiments, the coupling plate 460 can be a flat plate with a shaft hole 410 formed inside the cylinder of the connector 450, and its plate surface is directly opposite the opening at the axial end of the channel 211.

[0150] The encapsulation plate 470 is fixed to the other axial end of the connector 450, and has a mounting hole 472 opposite to the shaft hole 410, through which the output shaft 510 of the power component passes to connect with the rotating shaft 310. The power component, such as a motor 500, can be fixed to the encapsulation plate 470, and its output shaft 510 passes through the mounting hole 472 to connect with the rotating shaft 310. In some embodiments, the connector 450, the coupling plate 460, and the encapsulation plate 470 can be integrally formed, which simplifies the assembly process of the base 400.

[0151] The heat exchange component 10 itself does not need to be equipped with a power component, and can drive the airflow actuator 300 with the help of an external power component.

[0152] In some alternative embodiments, the heat exchange assembly 10 may have its own independent power unit. For example, the heat exchange assembly 10 may further include a motor 500 fixed to the side of the encapsulation plate 470 facing away from the coupling plate 460. The motor 500 has an output shaft 510 that passes through a mounting hole 472 to connect with a rotating shaft 310, thereby driving the rotating shaft 310 to rotate. The motor 500 may be a stepper motor 500, but is not limited to this.

[0153] Therefore, those skilled in the art should recognize that although numerous exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications conforming to the principles of the present invention can be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the invention. Thus, the scope of the present invention should be understood and construed as covering all such other variations or modifications.

Claims

1.A control method of an air conditioner indoor unit, the air conditioner indoor unit comprising a plurality of heat exchanger sections connected in series, each of the heat exchanger sections being provided with a corresponding airflow promoting device for promoting airflow through the corresponding heat exchanger section, the control method comprising: determining whether the temperature of the airflow out of the air conditioner indoor unit is uniform; if not, adjusting the operating parameters of the airflow promoting devices to adjust the heat exchange efficiency of each of the heat exchanger sections, so as to make the temperature of the airflow out of the air conditioner indoor unit uniform; the step of determining whether the temperature of the airflow out of the air conditioner indoor unit is uniform comprising: obtaining the real-time value of the coil temperature of each of the heat exchanger sections; obtaining the expected value of the coil temperature of each of the heat exchanger sections; determining whether the real-time value of the coil temperature of each of the heat exchanger sections is consistent with the expected value; if not, determining that the temperature of the airflow out of the air conditioner indoor unit is not uniform; the step of obtaining the expected value of the coil temperature of each of the heat exchanger sections comprising: obtaining the temperature of the air outlet of the air conditioner indoor unit; and calculating the expected value of the coil temperature of each of the heat exchanger sections according to the temperature of the air outlet according to a preset mapping relationship. 2.The control method of claim 1, wherein the step of adjusting the operating parameters of the airflow promoting devices comprises: determining the heat exchanger sections whose real-time value of the coil temperature is higher than the expected value as high-bias sections, and the heat exchanger sections whose real-time value of the coil temperature is lower than the expected value as low-bias sections; obtaining the temperature adjustment mode of the air conditioner indoor unit; and adjusting the operating parameters of the airflow promoting devices corresponding to the high-bias sections and the low-bias sections respectively according to the temperature adjustment mode. 3.The control method of claim 2, wherein the step of adjusting the operating parameters of the airflow promoting devices corresponding to the high-bias sections according to the temperature adjustment mode comprises: in a cooling mode, reducing the rotating speed of the airflow promoting devices corresponding to the high-bias sections; and / or in a heating mode, increasing the rotating speed of the airflow promoting devices corresponding to the high-bias sections. 4.The control method of claim 2, wherein the step of adjusting the operating parameters of the airflow promoting devices corresponding to the low-bias sections according to the temperature adjustment mode comprises: in a cooling mode, increasing the rotating speed of the airflow promoting devices corresponding to the low-bias sections; and / or in a heating mode, reducing the rotating speed of the airflow promoting devices corresponding to the low-bias sections. 5.The control method of claim 1, further comprising, after the step of adjusting the operating parameters of the airflow promoting devices: obtaining the range of the real-time value of the coil temperature of each of the heat exchanger sections; determining whether the range is in a decreasing trend; and if not, further adjusting the operating parameters of the airflow promoting devices. 6.The control method of claim 1, further comprising: obtaining a temperature adjustment start signal of the air conditioner indoor unit; and performing the step of determining whether the temperature of the airflow out of the air conditioner indoor unit is uniform after a set time interval. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 7. An air conditioner indoor unit, comprising a plurality of abutted heat exchanger sections, each of the heat exchanger sections being provided with a corresponding airflow promoting device for promoting formation of an airflow flowing through the corresponding heat exchanger section, and further comprising: a processor and a memory having stored therein a machine executable program that, when executed by the processor, implements the control method according to any one of claims 1-6.

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