Air conditioner indoor unit and its control method, device, storage medium and air conditioner

Abstract

This invention discloses an indoor air conditioner unit and its control method, device, storage medium, and air conditioner. The indoor air conditioner unit includes a casing, a heat exchanger, and a fan assembly. The casing forms an air duct, an air inlet, a first air outlet, and a second air outlet connected to the air duct. The air duct includes an air inlet section adjacent to the air inlet. The heat exchanger is disposed within the air inlet section. The fan assembly is disposed within the air duct and located outside the air outlet of the air inlet section. The fan assembly is configured to drive airflow from one of the first and second air outlets, into the air duct through the air inlet, and out through the other of the first and second air outlets. In this invention, a portion of the airflow flows into the air duct through the air inlet, is heated by the heat exchanger, and is then sent to the fan assembly. Another portion of the airflow flows into the air duct through one of the first and second air outlets and is sent to the fan assembly. The two airflows are thoroughly mixed by the fan assembly and then sent out through the other of the first and second air outlets, resulting in a uniform temperature distribution of the outgoing airflow.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of air conditioning technology, and in particular to an air conditioner indoor unit, a control method and device thereof, a storage medium and an air conditioner. BACKGROUND

[0002] In order to improve the user experience, the existing air conditioner can use a mixed air mode for air supply. Specifically, part of the indoor airflow flows in through a mixed air duct, and another part of the indoor airflow flows in through a heat exchange duct. The two airflows are mixed and then sent out from the air outlet together, so as to avoid a large difference between the air conditioner air supply temperature and the room temperature, thereby causing the human body to feel uncomfortable.

[0003] However, in this mixed air mode, the airflow that has undergone heat exchange and the airflow that has not undergone heat exchange can not be fully mixed, resulting in uneven distribution of the air supply airflow temperature, and causing the human body to feel uncomfortable. SUMMARY

[0004] The main purpose of the present application is to provide an air conditioner indoor unit with better mixed air effect and more uniform air supply airflow temperature distribution, as well as a control method and device thereof, a storage medium and an air conditioner.

[0005] To achieve the above-mentioned purpose, the air conditioner indoor unit comprises:

[0006] A housing is formed with an air duct, an air inlet, a first air outlet and a second air outlet, and the air duct comprises an air inlet section adjacent to the air inlet;

[0007] A heat exchanger is arranged in the air inlet section; and

[0008] A fan assembly is arranged in the air duct and located outside the air outlet end of the air inlet section;

[0009] The fan assembly is arranged to drive the airflow to flow into the air duct from one of the first air outlet and the second air outlet and the air inlet, and to be sent out from the other of the first air outlet and the second air outlet.

[0010] In an embodiment, the housing is movably provided with a first cover plate and a second cover plate, the first cover plate is arranged to be openable and closable at the first air outlet, and the second cover plate is arranged to be openable and closable at the second air outlet.

[0011] In an embodiment, the housing has a mounting side and a front side located in front of the mounting side, the first air outlet and the second air outlet are arranged in a spaced manner in the up-down direction, the first air outlet is opened forward and upward, and the second air outlet is opened downward;

[0012] The first cover plate is rotationally mounted to the upper side edge of the first air outlet, and the opening degree of the first cover plate is greater than or equal to 0 degrees and less than or equal to 50 degrees; and / or,

[0013] The second cover plate is rotationally mounted on the rear side edge of the second air port, and the opening degree of the second cover plate is greater than or equal to 0 degree and less than or equal to 90 degree.

[0014] In an embodiment, the first air port and the second air port are arranged in a vertical direction.

[0015] The fan assembly comprises a bidirectional fan wheel arranged to be able to rotate forward or reversely, so that when the bidirectional fan wheel rotates forward, air flow is driven to flow into the air duct from the second air port and the air inlet and to be discharged from the first air port, and when the bidirectional fan wheel rotates reversely, air flow is driven to flow into the air duct from the first air port and the air inlet and to be discharged from the second air port.

[0016] In an embodiment, the air duct further comprises a first air duct section adjacent to the first air port and a second air duct section adjacent to the second air port.

[0017] The air conditioner indoor unit further comprises an air duct switching plate constituting part of the air duct wall, which is movably arranged in the cabinet to have a first working position and a second working position, and in the movement stroke of the air duct switching plate from the first position to the second position, the air inlet port of the first air duct section gradually increases, and in the movement stroke of the air duct switching plate from the second position to the first position, the air inlet port of the second air duct section gradually increases.

[0018] In an embodiment, the bidirectional fan wheel is a cross-flow fan wheel, and the heat exchanger is arranged in the shape of an arc plate curved towards the air inlet.

[0019] In an embodiment, the bidirectional fan wheel is a cross-flow fan wheel, the air inlet is located between the first air port and the second air port in a vertical direction, the air duct switching plate is arranged on the side of the cross-flow fan wheel away from the air inlet and is arranged in the shape of an arc plate curved away from the cross-flow fan wheel.

[0020] In an embodiment, the air duct switching plate is rotationally mounted on the cabinet, and the rotation axis of the air duct switching plate is arranged side by side with the rotation shaft of the cross-flow fan wheel, the air duct switching plate has a first rotation end and a second rotation end arranged opposite to each other on both sides of the rotation axis, the first rotation end is close to the first air duct section, and the second rotation end is close to the second air duct section.

[0021] The first rotating end of the air duct switching plate is away from the tubular wind wheel in the first working position, and the second rotating end is close to the tubular wind wheel; the first rotating end of the air duct switching plate is close to the tubular wind wheel in the second working position, and the second rotating end is away from the tubular wind wheel.

[0022] In an embodiment, an angle between a line connecting the rotating shaft and the rotation shaft and a vertical direction is greater than or equal to 30 degrees and less than or equal to 60 degrees in the axial direction of the tubular wind wheel; and / or,

[0023] A radius of the tubular wind wheel is R, and a minimum distance S between the rotating shaft and the rotation shaft is greater than or equal to 1.2R and less than or equal to 1.6R.

[0024] In an embodiment, the air duct wall of the air inlet section includes a first volute tongue and a second volute tongue, the first volute tongue and the second volute tongue are arranged in a vertical direction, the first volute tongue extends from an upper direction of the air inlet to the tubular wind wheel, and the second volute tongue extends from a lower direction of the air inlet to the tubular wind wheel.

[0025] In an embodiment, a minimum distance between the first volute tongue and the rotation shaft is greater than or equal to 1.1R and less than or equal to 1.3R; and / or,

[0026] A minimum distance between the second volute tongue and the rotation shaft is greater than or equal to 1.1R and less than or equal to 1.3R; and / or,

[0027] In the axial direction of the tubular wind wheel, an angle between a line connecting the closest point of the first volute tongue and the rotation shaft and a vertical direction is greater than or equal to 0 degrees and less than or equal to 50 degrees; and / or,

[0028] A tubular wind wheel air inlet angle formed between the first volute tongue and the second volute tongue is greater than or equal to 150 degrees and less than or equal to 180 degrees.

[0029] In an embodiment, the cabinet has a mounting side for mounting the air conditioner indoor unit, and a front side in front of the mounting side, and the air inlet is arranged on the front side of the cabinet.

[0030] The front side of the cabinet is provided with a panel extending in a vertical direction, the panel is arranged at the air inlet in a hinged manner, and the panel has a first opening position in which an upper end of the panel is connected to the cabinet in a rotating manner and a lower end of the panel is separated from the cabinet, and a second opening position in which the lower end of the panel is connected to the cabinet in a rotating manner and the upper end of the panel is separated from the cabinet.

[0031] To achieve the above object, the application further provides a control method of an air conditioner indoor unit, wherein the air conditioner indoor unit is the air conditioner indoor unit as described above, the first cover plate and the second cover plate are movably arranged on the cabinet, the first cover plate is arranged on the first air outlet in an openable and closable manner, and the second cover plate is arranged on the second air outlet in an openable and closable manner.

[0032] The control method of the air conditioner indoor unit comprises the following steps:

[0033] Obtaining a working mode of the air conditioner indoor unit;

[0034] Controlling opening and closing of the first cover plate and / or the second cover plate according to the working mode, and controlling the fan assembly to work.

[0035] In an embodiment, the step of controlling opening and closing of the first cover plate and / or the second cover plate according to the working mode, and controlling the fan assembly to work comprises:

[0036] When the working mode is the mixed air mode, the first cover plate and the second cover plate are controlled to be opened, and the opening degree of the first cover plate or the second cover plate is controlled according to a preset mixed air position.

[0037] In an embodiment, the air conditioner indoor unit is the air conditioner indoor unit as described above;

[0038] The step of controlling opening and closing of the first cover plate and / or the second cover plate according to the working mode, and controlling the fan assembly to work comprises:

[0039] When the working mode is the refrigeration mixed air mode, the bidirectional fan wheel is controlled to be positively rotated, and the first cover plate and the second cover plate are controlled to be opened; and / or,

[0040] When the working mode is the refrigeration non-mixed air mode, the bidirectional fan wheel is controlled to be positively rotated, and the first cover plate is controlled to be opened and the second cover plate is controlled to be closed; and / or,

[0041] When the working mode is the heating mixed air mode, the bidirectional fan wheel is controlled to be reversely rotated, and the first cover plate and the second cover plate are controlled to be opened; and / or,

[0042] When the working mode is the heating non-mixed air mode, the bidirectional fan wheel is controlled to be reversely rotated, and the first cover plate is controlled to be opened and the second cover plate is controlled to be closed.

[0043] In an embodiment, the air conditioner indoor unit is the air conditioner indoor unit as described above;

[0044] The step of controlling opening and closing of the first cover plate and / or the second cover plate according to the working mode, and controlling the fan assembly to work comprises:

[0045] when the working mode is the cooling mixed air mode, controlling the bidirectional wind wheel to rotate forward, controlling the air duct switching plate to switch to the first working position, and controlling the first cover plate and the second cover plate to open; and / or,

[0046] when the working mode is the cooling non-mixed air mode, controlling the bidirectional wind wheel to rotate forward, controlling the air duct switching plate to switch to the first working position, and controlling the first cover plate to open and the second cover plate to close; and / or,

[0047] when the working mode is the heating mixed air mode, controlling the bidirectional wind wheel to rotate reversely, controlling the air duct switching plate to switch to the second working position, and controlling the first cover plate and the second cover plate to open; and / or,

[0048] when the working mode is the heating non-mixed air mode, controlling the bidirectional wind wheel to rotate reversely, controlling the air duct switching plate to switch to the second working position, and controlling the first cover plate to open and the second cover plate to close.

[0049] In an embodiment, the air conditioner indoor unit is the air conditioner indoor unit as described above;

[0050] The step of controlling the opening and closing of the first cover plate and / or the second cover plate according to the working mode and controlling the fan assembly to work includes:

[0051] when the working mode is the cooling mixed air mode, controlling the bidirectional wind wheel to rotate forward, controlling the panel to switch to the first opening position, controlling the opening degree of the panel according to a preset air outlet gear, and controlling the first cover plate and the second cover plate to open; and / or,

[0052] when the working mode is the cooling non-mixed air mode, controlling the bidirectional wind wheel to rotate forward, controlling the panel to switch to the first opening position, controlling the opening degree of the panel according to a preset air outlet gear, and controlling the first cover plate to open and the second cover plate to close; and / or,

[0053] when the working mode is the heating mixed air mode, controlling the bidirectional wind wheel to rotate reversely, controlling the panel to switch to the second opening position, controlling the opening degree of the panel according to a preset air outlet gear, and controlling the first cover plate and the second cover plate to open; and / or,

[0054] when the working mode is the heating non-mixed air mode, controlling the bidirectional wind wheel to rotate reversely, controlling the panel to switch to the second opening position, controlling the opening degree of the panel according to a preset air outlet gear, and controlling the first cover plate to open and the second cover plate to close.

[0055] To achieve the above object, the application further provides a control device, comprising a memory, a processor and a control program of an air conditioner indoor unit stored in the memory and executable on the processor, wherein the control program of the air conditioner indoor unit, when executed by the processor, implements the steps of the control method of the air conditioner indoor unit.

[0056] To achieve the above object, the application further provides an air conditioner, comprising the control device of the air conditioner indoor unit as described above; or,

[0057] The air conditioner indoor unit as described above.

[0058] To achieve the above object, the application further provides a storage medium, wherein the storage medium stores a control program of an air conditioner indoor unit, and the control program of the air conditioner indoor unit, when executed by a processor, implements the steps of the control method of the air conditioner indoor unit as described above.

[0059] The air conditioner indoor unit provided by the application comprises a shell, a heat exchanger and a fan assembly. The shell is formed with an air duct, an air inlet, a first air outlet and a second air outlet which are communicated with the air duct. The air duct comprises an air inlet section adjacent to the air inlet. The heat exchanger is arranged in the air inlet section. The fan assembly is arranged in the air duct and located outside the air outlet end of the air inlet section. The fan assembly is arranged to drive air flow to flow into the air duct from one of the first air outlet and the second air outlet and the air inlet and to flow out from the other of the first air outlet and the second air outlet. In the embodiment provided by the application, the heat exchanger is arranged in front of the fan assembly. A part of the air flow flows into the air duct through the air inlet, is heated by the heat exchanger and is then sent to the fan assembly. Another part of the air flow flows into the air duct through one of the first air outlet and the second air outlet and is then sent to the fan assembly. The two air flows are fully mixed by the fan assembly and are then sent out from the other of the first air outlet and the second air outlet. The temperature distribution of the air flow is uniform.

[0060] The control method of the air conditioner indoor unit provided by the application comprises the following steps: obtaining an air outlet mode of the air conditioner indoor unit; controlling the opening and closing of the first cover plate and / or the second cover plate according to the air outlet mode and controlling the operation of the fan assembly. In the application, the air conditioner indoor unit is switched among the modes of cooling mixed air, heating mixed air, cooling non-mixed air and heating mixed air by controlling the fan assembly and the first cover plate and / or the second cover plate. The air outlet mode of the air conditioner indoor unit is diversified, and the user has more choices and has a better use experience. BRIEF DESCRIPTION OF DRAWINGS

[0061] Figure 1 The structure of the air conditioner indoor unit provided by the application in a closed state is shown in the figure;

[0062] Figure 2 The structure of the air conditioner indoor unit provided by the application in a closed state is shown in the figure; Figure 1Schematic diagram of air outlet of the hollow air conditioner indoor unit in the cooling non-mixing air mode;

[0063] Figure 3 For Figure 1 Schematic diagram of air outlet of the hollow air conditioner indoor unit in the cooling non-mixing air mode;

[0064] Figure 4 For Figure 1 Schematic diagram of air outlet of the hollow air conditioner indoor unit in the cooling non-mixing air mode;

[0065] Figure 5 For Figure 1 Schematic diagram of air outlet of the hollow air conditioner indoor unit in the cooling non-mixing air mode;

[0066] Figure 6 For Figure 1 Schematic diagram of working position of the middle air duct switching plate;

[0067] Figure 7 For Figure 1 Schematic diagram of important parameters of the hollow air conditioner indoor unit;

[0068] Figure 8 For Figure 1 Front view of the middle cross-flow fan wheel;

[0069] Figure 9 For Figure 8 Sectional view at A-A;

[0070] Figure 10 For Figure 8 Sectional view at B-B;

[0071] Figure 11 Schematic diagram of air outlet of the prior art hollow air conditioner indoor unit in the cooling mode;

[0072] Figure 12 Schematic diagram of air outlet of the prior art hollow air conditioner indoor unit in the heating mode;

[0073] Figure 13 Schematic diagram of the structure of the control device of the hardware running environment involved in the embodiment scheme of the application

[0074] Figure 14 Schematic diagram of the first embodiment of the control method of the air conditioner indoor unit provided by the application;

[0075] Figure 15 Schematic diagram of the second embodiment of the control method of the air conditioner indoor unit provided by the application;

[0076] Figure 16 Schematic diagram of the third embodiment of the control method of the air conditioner indoor unit provided by the application;

[0077] Figure 17A flowchart of an embodiment of the control method of the air conditioner indoor unit provided by the present application.

[0078] Explanation of reference numerals:

[0079]

[0080]

[0081] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments in conjunction with the accompanying drawings. DETAILED DESCRIPTION

[0082] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present application.

[0083] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship, movement condition, etc. between components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications also change accordingly.

[0084] In addition, if the embodiments of the present application involve descriptions of “first”, “second”, etc., the descriptions of “first”, “second”, etc. are only for description purposes, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by “first” and “second” can explicitly or implicitly include at least one of the features. In addition, the technical solutions of the various embodiments can be combined with each other, but it must be based on the fact that a person skilled in the art can realize it, and when the combination of technical solutions contradicts each other or cannot be realized, it should be considered that the combination of technical solutions does not exist and is not within the scope of protection claimed by the present application.

[0085] In order to improve the user experience, the existing air conditioner can use a mixed air mode for air supply. Specifically, part of the indoor airflow flows in through a mixed air duct, and another part of the indoor airflow flows in through a heat exchange duct. The two airflows are mixed and then sent out from the air outlet together, so as to avoid a large difference between the air supply temperature of the air conditioner and the room temperature, thereby causing the human body to feel uncomfortable. However, in this mixed air mode, the airflow that has undergone heat exchange and the airflow that has not undergone heat exchange can not be fully mixed, resulting in uneven distribution of the air supply airflow temperature, and causing the human body to feel uncomfortable.

[0086] To solve the above technical problems, the application provides an air conditioner indoor unit 100 and an air conditioner comprising the air conditioner indoor unit 100. The air conditioner can be a one-piece air conditioner or a split air conditioner. The split air conditioner comprises an air conditioner outdoor unit and the air conditioner indoor unit 100 provided by the application, wherein the air conditioner indoor unit 100 is connected to the air conditioner outdoor unit through a refrigerant pipe, and the air conditioner indoor unit 100 realizes heat exchange and air supply indoors. The one-piece air conditioner comprises the air conditioner indoor unit 100 provided by the application, wherein the air conditioner indoor unit 100 realizes heat exchange and air supply indoors, and the air conditioner further comprises an outdoor heat exchange structure which is integrally arranged with the air conditioner indoor unit 100.

[0087] Figures 1 to 5 The structure of an embodiment of the air conditioner indoor unit 100 provided by the application is shown in the schematic view. It should be noted that the description of the orientation and directionality in the embodiment is only applicable to the state of the air conditioner indoor unit 100 and the air conditioner in normal use, and does not include the state of the air conditioner indoor unit 100 and the air conditioner in the case of installation, transportation, etc. In the embodiment, the upward direction refers to the direction which is substantially parallel to the direction of gravity, but the included angle between the upward direction and the direction of gravity is not more than 90 degrees, the vertical direction refers to the direction which is parallel to the direction of gravity, and the horizontal direction refers to the direction which is substantially perpendicular to the direction of gravity and is not parallel to the direction of gravity.

[0088] As shown in the figure, the air conditioner indoor unit 100 comprises a casing 10, a heat exchanger 50 and a fan assembly 301. The casing 10 is formed with an air duct 14, an air inlet 13, a first air outlet 11 and a second air outlet 12 which communicate with the air duct 14, wherein the air duct 14 comprises an air inlet section 140 which is adjacent to the air inlet 13, the heat exchanger 50 is arranged in the air inlet section 140, and the fan assembly 301 is arranged in the air duct 14 and located at the air outlet end of the air inlet section 140, i.e. the air outlet is located at the air outlet side of the heat exchanger 50. The fan assembly 301 is arranged to drive the airflow to flow into the air duct 14 from one of the first air outlet 11 and the second air outlet 12 and the air inlet 13, and to flow out from the other of the first air outlet 11 and the second air outlet 12.

[0089] The specific material and shape of the casing 10 are not limited. Specifically, the casing 10 is generally made of engineering plastic, and is used to protect the fan assembly 301 and the heat exchanger 50 and other components in the air conditioner indoor unit 100, and is used to support the air conditioner indoor unit 100. The specific shape of the casing 10 is set according to the specific type of the air conditioner indoor unit 100 and the distribution of the internal components. For example, the casing 10 is generally in the form of a cylinder extending in the vertical direction, and the air conditioner indoor unit 100 is supported on the ground by a base plate provided at the bottom of the casing 10. In this embodiment, the air conditioner indoor unit 100 is a wall-mounted air conditioner indoor unit 100, the casing 10 extends generally in the horizontal direction, and the rear side of the casing 10 serves as a mounting side 60 for mounting and fixing to a wall or other building structure to support the air conditioner indoor unit 100.

[0090] Further, the casing 10 forms an air duct 14 therein for heat exchange and / or air mixing. The air duct 14 is a passage for heat exchange airflow, and has an air duct wall that encloses the air duct 14. The air duct wall can be integrally provided with the casing, can be separately provided from the casing, or can be composed of multiple separately provided parts. The specific structure and form of the air duct 14 are not limited. The air duct 14 has three air inlets to the room, including the air inlet 13, the first air inlet 11, and the second air inlet 12, which are spaced apart from each other. The air duct 14 includes an air inlet section 140 adjacent to the air inlet 13, which is specifically located on the air outlet side of the air inlet 13 and is closely arranged with the air inlet 13. In this embodiment, the heat exchanger 50 is provided in the air inlet section 140, so that the airflow flowing into the air duct 14 through the air inlet 13 first passes through the heat exchanger 50. On the air outlet side of the heat exchanger 50, the fan assembly 301 is provided, which is located outside the air outlet end of the air inlet section 140, and is used to drive the indoor air to flow into the air duct 14. One of the first air inlet 11 and the second air inlet 12 serves as an air inlet passage for air mixing, and the other serves as an air outlet passage, and their functions depend on the arrangement position of the first air inlet 11 and the second air inlet 12. Specifically, the fan assembly 301 has an air inlet side and an air outlet side, one of the first air inlet 11 and the second air inlet 12 is located on the air inlet side of the fan assembly 301 to serve as an air inlet passage for air mixing, and the other is located on the air outlet side of the fan assembly 301 to serve as an air outlet passage.

[0091] In the embodiment, when the fan assembly 301 is working, a part of indoor air flows to the fan assembly 301 from the air inlets 11 and 12 as the air inlets of the air inlet channel, and another part of indoor air flows to the fan assembly 301 from the air inlet 13 after heat exchange through the heat exchanger 50 in the air inlet section 140. The two air flows are fully stirred and mixed in the air duct 14 under the action of the fan assembly 301, so that the temperature and humidity are uniformly distributed, and then are sent to the indoor space from the air inlets 11 and 12 as the air outlets of the air outlet channel. In this way, the air conditioner indoor unit 100 provided in the embodiment can make the indoor air exchange heat through the air duct 14 and mix with the indoor air flow without heat exchange to be sent, which can reduce the temperature difference between the air temperature sent by the air conditioner indoor unit 100 and the room temperature, accelerate the indoor air circulation, reduce the heating temperature rise or cooling temperature drop time, and improve the human comfort. In addition, the fan assembly 301 can fully mix the heat exchange air flow and the air flow without heat exchange, so that the air temperature sent by the air conditioner indoor unit 100 is uniform, the temperature stratification is avoided, and the human comfort is further improved.

[0092] On the basis of the above embodiment, please refer to Figure 4 and Figure 5 The first cover plate 51 and the second cover plate 52 are movably arranged on the casing 10. The first cover plate 51 is arranged to be openable and closable on the first air inlet 11, and the second cover plate 52 is arranged to be openable and closable on the second air inlet 12. In the embodiment, by controlling the movement of the first cover plate 51 and the second cover plate 52, the first air inlet 11 and the second air inlet 12 can be opened and closed. By controlling the opening degree of the first cover plate 51 or the second cover plate 52 at the air inlet as the air inlet channel, the mixed air volume, the heat exchange air volume and the total air volume can be controlled. By controlling the opening degree of the first cover plate 51 or the second cover plate 52 at the air outlet as the air outlet channel, the air supply direction of the air conditioner indoor unit 100 can be controlled.

[0093] Specifically, taking the first air outlet 11 as the mixed air inlet and the second air outlet 12 as the air outlet as an example. When the air conditioner indoor unit 100 is working, the mixed air entering from the first air outlet 11 and the heat exchange air entering from the air inlet section 140 flow to the fan assembly 301 together, and after being fully stirred and mixed by the fan assembly 301, the mixed air is sent out from the second air outlet 12. At this time, the mixed air volume of the air conditioner indoor unit 100 can be controlled by controlling the opening degree of the first cover plate 51. Taking the second air outlet 12 as the mixed air inlet and the first air outlet 11 as the air outlet as an example. When the air conditioner indoor unit 100 is working, the mixed air entering from the second air outlet 12 and the heat exchange air entering from the air inlet section 140 flow to the fan assembly 301 together, and after being fully stirred and mixed by the fan assembly 301, the mixed air is sent out from the first air outlet 11. At this time, the mixed air volume of the air conditioner indoor unit 100 can be controlled by controlling the opening degree of the second cover plate 52. The relationship between the opening degree of the first cover plate 51 or the second cover plate 52 and the mixed air volume, the heat exchange air volume and the total air volume is shown in Table 1. In the table, the mixed air volume refers to the air volume of the air inlet of the first air outlet 11 and the second air outlet 12 as the air inlet, the heat exchange air volume refers to the air volume of the air inlet of the air inlet 13, and the total air volume refers to the sum of the air volumes of the former two.

[0094] Table 1: Relationship between opening degree of first cover plate 51 or second cover plate 52 and mixed air volume, heat exchange air volume and total air volume

[0095]

[0096]

[0097] As can be seen from Table 1, in the first case, when the opening degree of the first cover plate 51 increases, the mixed air volume of the mixed air increases, the heat exchange air volume of the heat exchange air slightly decreases, and the total air volume of the air conditioner indoor unit 100 increases, while the opening degree of the second cover plate 52 remains unchanged. In the second case, when the opening degree of the second cover plate 52 increases, the mixed air volume of the mixed air increases, the heat exchange air volume of the heat exchange air slightly decreases, and the total air volume of the air conditioner indoor unit 100 increases, while the opening degree of the first cover plate 51 remains unchanged.

[0098] Further, please continue to refer to Figure 4 , Figure 5 and Figure 7As shown in the figure, the casing 10 has a mounting side 60 and a front side in front of the mounting side 60. It is to be noted that the mounting side 60 of the casing 10 is generally used to be fixedly connected with a building structure, and the front side in front of the mounting side 60 generally refers to a side of the air conditioner indoor unit 100 facing an indoor space in a horizontal direction, i.e., a side of the air conditioner indoor unit 100 facing away from the wall for mounting. In the embodiment, as shown in the figure, the first air outlet 11 and the second air outlet 12 are arranged in a vertical direction, the first air outlet 11 is opened forward and upward, and the second air outlet 12 is opened downward. In this way, in a cooling mode of the air conditioner indoor unit 100, the first air outlet 11 serves as an air outlet passage, and the low-temperature airflow sent by the air duct 14 can be sent forward and upward from the first air outlet 11, and then the cold air sinks, the cold air does not directly blow on the human body, the indoor temperature is uniformly distributed, and the human body feels comfortable. In a heating mode of the air conditioner indoor unit 100, the second air outlet 12 serves as an air outlet passage, and the high-temperature airflow sent by the air duct 14 can be sent downward from the second air outlet 12, the hot air rises, does not float in the upper part of the indoor space, avoids the heating stratification phenomenon, the indoor temperature is uniformly distributed, and the human body feels comfortable.

[0099] Further, please refer to Figure 7 In an embodiment, the first cover plate 51 is rotatably installed on the upper side edge of the first air outlet 11, and the opening degree D of the first cover plate 51 is greater than or equal to 0 degrees and less than or equal to 50 degrees. In another embodiment, the second cover plate 52 is rotatably installed on the rear side edge of the second air outlet 12, and the opening degree E of the second cover plate 52 is greater than or equal to 0 degrees and less than or equal to 90 degrees. In this way, the first cover plate 51 and the second cover plate 52 can be used to adjust the air supply direction of the first air outlet 11 and the second air outlet 12.

[0100] The above two embodiments can be combined for implementation. In this way, the air supply direction of the first air outlet 11 and the second air outlet 12 can be reasonably adjusted by the first cover plate 51 and the second cover plate 52, the cooling airflow is sent forward in the upper part, and the heating airflow is sent downward in the lower part.

[0101] In a conventional air conditioner indoor unit 100', please refer to Figure 11 and Figure 12, only one air outlet is provided, taking the wall-mounted air conditioner indoor unit 100' as an example, the air conditioner indoor unit 100' is provided with an air inlet 11' and an air outlet 12', and a heat exchange air duct communicating the air inlet 11' and the air outlet 12'. The heat exchange air duct is provided with a heat exchanger 20' and a cross-flow fan 30'. Whether in cooling mode or heating mode, indoor air flows into the air conditioner indoor unit 100' from the air inlet 11' on the upper side and from the air outlet 12' on the lower side. The air outlet direction is only adjusted by the air deflector 10' provided at the air outlet, and the adjustment effect on the air supply direction is limited, resulting in a short air supply distance, a small indoor air circulation range, uneven indoor temperature distribution, and an uncomfortable human body feeling.

[0102] To solve the above problems, please refer to Figures 2 to 5 In this embodiment, the first air port 11 and the second air port 12 are arranged in the up-down direction. In this way, in the cooling mode of the air conditioner indoor unit 100, the first air port 11 serves as an air outlet channel, and the low-temperature airflow sent by the air duct 14 can be sent out from the first air port 11. Then the cold air sinks, and the cold air does not blow directly on the human body, the indoor temperature distribution is uniform, and the human body feels comfortable. In the heating mode of the air conditioner indoor unit 100, the second air port 12 serves as an air outlet channel, and the high-temperature airflow sent by the air duct 14 can be sent out from the second air port 12. The hot air rises and does not float in the upper part of the indoor space, avoiding the heating stratification phenomenon. The indoor temperature distribution is uniform, and the human body feels comfortable. Please continue to refer to Figures 2 to 5 The fan assembly 301 includes a bidirectional fan wheel, which is arranged to be able to rotate forward or reverse, so that when the bidirectional fan wheel rotates forward, it drives the airflow to flow into the air duct 14 from the second air port 12 and the air inlet 13, and to be sent out from the first air port 11. When the bidirectional fan wheel reverses, it drives the airflow to flow into the air duct 14 from the first air port 11 and the air inlet 13, and to be sent out from the second air port 12.

[0103] In the embodiment, the direction of rotating the bidirectional wind wheel rotating shaft 31 to one side is positive direction, and the direction of rotating the bidirectional wind wheel rotating shaft 31 to the other side is reverse direction. By adjusting the rotating direction of the bidirectional wind wheel, the positions of the air inlet side and the air outlet side of the bidirectional wind wheel can be exchanged. Thus, when the bidirectional wind wheel rotates in positive direction, the first air outlet 11 is on the air outlet side of the bidirectional wind wheel, the second air outlet 12 and the air inlet 13 are on the air inlet side of the bidirectional wind wheel. When the air conditioner is in cooling mode, the bidirectional wind wheel is controlled to rotate in positive direction, so that the low-temperature air flow is sent out from the first air outlet 11 located above, and then the cold air sinks, the cold air does not blow directly to the human body, the indoor temperature is uniformly distributed, and the human body feels comfortable. When the bidirectional wind wheel rotates in reverse direction, the second air outlet 12 is on the air outlet side of the bidirectional wind wheel, and the first air outlet 11 and the air inlet 13 are on the air inlet side of the bidirectional wind wheel. When the air conditioner is in heating mode, the bidirectional wind wheel is controlled to rotate in reverse direction, so that the high-temperature air flow is sent out from the second air outlet 12 located below, and then the hot air rises and does not float above the indoor, avoiding the heating stratification phenomenon, the indoor temperature is uniformly distributed, and the human body feels comfortable.

[0104] By controlling the opening and closing and the opening degree of the first cover plate 51 and / or the second cover plate 52, whether to mix air in cooling or heating mode and the adjustment of the air mixing gear in air mixing can also be realized. Specifically, please refer to Figure 2 and Figure 4 If only cooling is performed without air mixing, the bidirectional wind wheel can be controlled to rotate in positive direction, the first cover plate 51 is opened, the second cover plate 52 is closed, and the opening degree of the first cover plate 51 can also be adjusted to adjust the air supply direction of the first air outlet 11. If air mixing is performed in cooling mode, the second cover plate 52 also needs to be opened, so that a part of indoor air flow does not pass through the heat exchanger 50, and is mixed uniformly with the heat exchange air flow at the fan assembly 301 before being sent out by the first air outlet 11. The opening degree of the second cover plate 52 can also be adjusted to adjust the air mixing volume of the air conditioner.

[0105] Please continue to refer to Figure 3 and Figure 5If only heating is performed, without air mixing, the second cover plate 52 can be opened, the first cover plate 51 is closed, and the opening degree of the second cover plate 52 can be adjusted to adjust the air supply direction of the second air outlet 12. If air mixing is performed in the heating mode, the first cover plate 51 also needs to be opened, so that part of the indoor air flow does not pass through the heat exchanger 50, and is mixed uniformly with the heat exchange air flow at the fan assembly 301 before being sent out through the second air outlet 12. The opening degree of the first cover plate 51 can also be adjusted to adjust the air mixing volume of the air conditioner. In this embodiment, the user or the control system inside the air conditioner can adjust according to the actual needs, select different air outlet directions in different heat exchange modes, select whether to mix air, and select the appropriate air mixing volume, so that the air conditioner indoor unit 100 has multiple air outlet modes that can be selected and adjusted, and the user experience is improved.

[0106] In this embodiment, the specific model of the bidirectional fan is not limited, as long as it can drive air flow from different directions in the forward rotation and reverse rotation states. For example, it can be an axial flow fan, and it can also be a cross-flow fan 30. When the bidirectional fan is a cross-flow fan 30, the fan blades of the cross-flow fan 30 need to be specially designed. Specifically, please refer to Figures 8 to 10 In an embodiment, the cross-flow fan 30 has first fan blade sections 32 and second fan blade sections 33 alternately distributed in the axial direction. The first fan blade sections 32 and the second fan blade sections 33 have different blade shapes, so that when the cross-flow fan 30 rotates forward, the cross-flow fan 30 drives air flow to be sent out in the radial direction of the first fan blade sections 32, and when the cross-flow fan 30 reverses, the cross-flow fan 30 drives air flow to be sent out in the radial direction of the second fan blade sections 33. The specific blade shapes of the first fan blade sections 32 and the second fan blade sections 33 are described in detail in Figure 9 and Figure 10 It can be seen that the fan blade sections of the first fan blade sections 32 have the same rotational direction as the forward rotation direction, and the fan blade sections of the second fan blade sections 33 have the same rotational direction as the reverse rotation direction. In this way, the cross-flow fan 30 provided in this embodiment can realize different air supply directions of the bidirectional fan in the forward rotation and reverse rotation states. It can be understood that the specific structure of the cross-flow fan 30 can also have other embodiments, for example, the cross-flow fan 30 is provided with movable fan blades and a fan blade driving device for driving the fan blades to move. The position of the fan blades can be adjusted according to the rotation direction of the cross-flow fan 30, and the fan blades are adaptively driven and adjusted by the fan blade driving device, so that the fan blades move to a position having the same rotational direction as the current rotation direction. In this way, the cross-flow fan 30 provided in this embodiment can realize different air supply directions of the bidirectional fan in the forward rotation and reverse rotation states.

[0107] It can be understood that the effect on the air supply direction is limited by adjusting the rotation direction of the bidirectional fan wheel only, and if the internal structure of the air duct 14 is not adjusted adaptively, the air flow resistance in the air duct 14 will be large, which will affect the air supply amount and generate a large noise. Therefore, in an embodiment, referring to Figures 1 to 5 , the air duct 14 further includes a first air duct section 141 adjacent to the first air outlet 11 and a second air duct section 142 adjacent to the second air outlet 12. It can be understood that the first air duct section 141 is arranged adjacent to the side of the first air outlet 11 close to the bidirectional fan wheel, and the second air duct section 142 is arranged adjacent to the side of the second air outlet 12 close to the bidirectional fan wheel. The air conditioner indoor unit 100 further includes an air duct switching plate 20, which constitutes part of the air duct wall of the air duct 14, that is, the air duct switching plate 20 constitutes at least part of the air duct wall of the air duct 14 except the first air duct section 141, the second air duct section 142 and the air inlet section 140.

[0108] The air duct switching plate 20 is movably arranged in the cabinet 10 to have a first working position and a second working position. Referring to Figures 2 to 5 , in the movement stroke of the air duct switching plate 20 from the first position to the second position, the air inlet port of the first air duct section 141 gradually increases, and in the movement stroke of the air duct switching plate 20 from the second position to the first position, the air inlet port of the second air duct section 142 gradually increases. In this way, in the cooling mode of the air conditioner indoor unit 100, the air duct switching plate 20 is switched to the first working position, so that the air inlet 13 and the first air outlet 11 are communicated to form an upper air outlet air duct, and the air flow is guided to the first air outlet 11 for outlet, and in the heating mode, the air duct switching plate 20 is switched to the second working position, so that the air inlet 13 and the second air outlet 12 are communicated to form a lower air outlet air duct, and the air flow is guided to the second air outlet 12 for outlet, so that the internal form of the air duct 14 is adapted to the actual air outlet position of the air conditioner indoor unit 100, the wind loss is reduced, the air supply amount is increased, and the heat exchange efficiency is improved. It can be understood that the air duct switching plate 20 does not completely close the air outlet port of the second air duct section 142 in the cooling mode, so that the second cover plate 52 can be opened for air mixing at this time, and the air inlet port of the first air duct section 141 is larger than the air outlet port of the second air duct section 142. Similarly, the air duct switching plate 20 also does not completely close the air inlet port of the first air duct section 141 in the heating mode, so that the first cover plate 51 can be opened for air mixing at this time, and the air inlet port of the second air duct section 142 is larger than the air outlet port of the first air duct section 141.

[0109] In the embodiment, the bidirectional fan wheel is a cross-flow fan wheel 30, referring toFigures 1 to 5 The heat exchanger 50 is arranged in an arc shape bending towards the air inlet 13. In this way, the heat exchange area of the heat exchanger 50 is increased, and the heat exchange efficiency is improved.

[0110] In an embodiment, please continue to refer to Figures 1 to 5 The air inlet 13 is located between the first air outlet 11 and the second air outlet 12 in the up-down direction, the air duct switching plate 20 is arranged on the side of the cross-flow fan 30 away from the air inlet 13, and is arranged in an arc shape bending away from the cross-flow fan 30. In this embodiment, the air duct switching plate 20 is arranged in a bending shape to conform to the shape of the conventional cross-flow air duct 14. The air duct switching plate 20 cooperates with the air duct wall at the air inlet section 140 and the first air duct section 141 or the second air duct section 142 to jointly form a cross-flow air duct 14 suitable for the cross-flow fan 30, guide the airflow to flow from the air inlet 13 to the first air outlet 11 or the second air outlet 12 as an air outlet passage, reduce the air resistance, and increase the air supply amount.

[0111] Further, please refer to Figure 1 and Figure 6 The dashed line in the figure schematically shows the shape of the air duct switching plate 20 in the first working position, and the solid line schematically shows the shape of the air duct switching plate 20 in the second working position. As can be seen, the air duct switching plate 20 is rotatably installed on the cabinet 10, and the rotation shaft 21 of the air duct switching plate 20 is arranged side by side with the rotation shaft 31 of the cross-flow fan 30. The air duct switching plate 20 has a first rotation end 22 and a second rotation end 23 arranged opposite to each other on both sides of the rotation shaft 21. The first rotation end 22 is close to the first air duct section 141, and the second rotation end 23 is close to the second air duct section 142.

[0112] Please refer to Figure 2 In the refrigeration mode, the air duct switching plate 20 is switched to the first working position, the first rotation end 22 is away from the cross-flow fan 30, and the second rotation end 23 is close to the cross-flow fan 30 to connect the air inlet section 140 and the first air duct section 141, forming an upper air outlet air duct. In this way, when the cross-flow fan 30 works, the indoor airflow passes through the heat exchanger 50 for heat exchange and cooling, flows to the first air duct section 141, and is sent out from the first air outlet 11 located above. The low-temperature gas sinks, and the cold air is not directly blown to the human body. The indoor temperature is uniformly distributed, and the human body feels comfortable. Please refer to Figure 4, if the second air outlet 12 is opened, another part of the air flow does not pass through the heat exchanger 50, and after being fully mixed with the heat-exchanged air flow at the cross-flow fan 30, flows to the first air duct section 141, and is sent out from the first air outlet 11 located above. Compared with the non-mixed air cooling mode, in the mixed air cooling mode, the temperature difference between the air supply temperature of the air conditioner indoor unit 100 and the room temperature can be reduced, the indoor air circulation can be accelerated, the cooling temperature drop time can be reduced, the human comfort can be improved, the heat-exchanged air flow and the non-heat-exchanged air flow can be fully mixed by the cross-flow fan 30, the air supply temperature of the air conditioner indoor unit 100 is uniform, temperature stratification is avoided, and the human comfort is further improved.

[0113] Please refer to Figure 3 In the heating mode, the air duct switching plate 20 is switched to the second working position, the second rotating end 23 is away from the cross-flow fan 30, and the first rotating end 22 is close to the cross-flow fan 30, so as to communicate the air inlet section 140 and the second air duct section 142, and form a lower air outlet air duct. In this way, when the cross-flow fan 30 works, the indoor air flow passes through the heat exchanger 50 for heat exchange and temperature rise, flows to the second air duct section 142, and is sent out from the second air outlet 12 located below. The high-temperature air rises, avoids the heating stratification phenomenon, the indoor temperature distribution is uniform, and the human body feels comfortable. Please refer to Figure 5 , if the first air outlet 11 is opened, another part of the air flow does not pass through the heat exchanger 50, and after being fully mixed with the heat-exchanged air flow at the cross-flow fan 30, flows to the second air duct section 142, and is sent out from the second air outlet 12 located below. Compared with the non-mixed air cooling mode, in the mixed air cooling mode, the temperature difference between the air supply temperature of the air conditioner indoor unit 100 and the room temperature can be reduced, the indoor air circulation can be accelerated, the heating temperature rise time can be reduced, the human comfort can be improved, the heat-exchanged air flow and the non-heat-exchanged air flow can be fully mixed by the cross-flow fan 30, the air supply temperature of the air conditioner indoor unit 100 is uniform, temperature stratification is avoided, and the human comfort is further improved.

[0114] In the embodiment, the air duct switching plate 20 is switched between the first working position and the second working position through the seesaw type rotating action, the activity path is simple and the stroke is small, the structure is simple and reliable, easy to produce and assemble, and the production cost is low.

[0115] In an embodiment, please refer to Figure 7In the axial direction of the cross-flow fan 30, the angle C between the line connecting the rotating shaft 21 and the rotating shaft 31 and the vertical direction is greater than or equal to 30 degrees and less than or equal to 60 degrees. This determines the positional relationship between the air duct switching plate 20 and the cross-flow fan 30, and the air inlets 13 and the air duct switching plate 20 are arranged opposite to each other on the two sides of the cross-flow fan 30, so that the air inlets 13 are located approximately at the front side of the casing 10, and the air duct switching plate 20 is located approximately at the rear side of the cross-flow fan 30. This is a reasonable arrangement, and the air duct switching plate 20 has sufficient space to move, which is suitable for the shape of the general wall-mounted air conditioner indoor unit 100.

[0116] In another embodiment, please continue to refer to Figure 7 , the radius of the cross-flow fan 30 is R, and the minimum distance S between the rotating shaft 21 and the rotating shaft 31 is greater than or equal to 1.2R and less than or equal to 1.6R. In this embodiment, if the distance R between the rotating shaft 21 of the air duct switching plate 20 and the rotating shaft 31 is too small, the rotating stroke of the air duct switching plate 20 will be too small, and the air duct switching plate 20 cannot be switched between the first working position and the second working position to form an upper air outlet or a lower air outlet. If the distance R between the rotating shaft 21 of the air duct switching plate 20 and the rotating shaft 31 is too large, the distance between the air duct switching plate 20 and the cross-flow fan 30 will be too large, and the air duct switching plate 20 cannot guide the air well, and the air resistance will be too large, and the noise will be increased. Therefore, in this embodiment, the minimum distance S between the rotating shaft 21 and the rotating shaft 31 is greater than or equal to 1.2R and less than or equal to 1.6R, so that the distance between the air duct switching plate 20 and the cross-flow fan 30 is appropriate, which can ensure that the air duct switching plate 20 can guide the air well, and the air duct switching plate 20 can move between the first working position and the second working position without being interfered by the cross-flow fan 30.

[0117] It can be understood that the above two embodiments can be implemented separately or in combination.

[0118] On the basis of the above embodiments, please continue to refer to Figures 2 to 5 , and Figure 7, the air duct wall of the air inlet section 140 comprises a first volute tongue 103 and a second volute tongue 104, the first volute tongue 103 and the second volute tongue 104 are arranged in the up-down direction, the first volute tongue 103 is arranged from the upper direction of the air inlet 13 to the direction of the cross-flow fan 30, and the second volute tongue 104 is arranged from the lower direction of the air inlet 13 to the direction of the cross-flow fan 30. In this embodiment, the first volute tongue 103 can also constitute part of the air duct wall of the first air duct section 141, and the second volute tongue 104 can also constitute part of the air duct wall of the second air duct section 142. The first volute tongue 103 and the second volute tongue 104 constitute the air inlet section 140, so that there is enough space in the air inlet section 140 to accommodate the heat exchanger 50, and preferably the upper and lower ends of the heat exchanger 50 can be fixed to the first volute tongue 103 and the second volute tongue 104 respectively, and arranged in the form of a forwardly curved arc-shaped plate, so that the appearance of the cabinet 10 forms a forwardly curved shape, the structure is compact, and the appearance is reasonable. Preferably, the lower end of the second volute tongue 104 is provided with a water pan extending forward, which is located below the arc-shaped heat exchanger 50 to collect water.

[0119] On the basis of the above embodiment, it can be understood that the spacing between the first volute tongue 103 and the second volute tongue 104 and the cross-flow fan 30 determines the size of the ventilation area of the air inlet section 140. If the spacing between the first volute tongue 103 or the second volute tongue 104 and the cross-flow fan 30 is too small, it will result in too small ventilation area of the air inlet section 140, and the wind resistance will increase, and if the spacing between the first volute tongue 103 or the second volute tongue 104 and the cross-flow fan 30 is too large, it will result in insufficient flow guiding effect of the first volute tongue 103 and the second volute tongue 104. Therefore, according to the general form of the cross-flow air duct 14, please refer to Figure 7 , the minimum spacing S1 between the first volute tongue 103 and the shaft 31 is greater than or equal to 1.1R and less than or equal to 1.3R. And / or, the minimum spacing S2 between the second volute tongue 104 and the shaft 31 is greater than or equal to 1.1R and less than or equal to 1.3R. In this way, the spacing between the cross-flow fan 30 and the first volute tongue 103 and the second volute tongue 104 is reasonable, that is, it can guide the flow well and also can guarantee the air inlet amount of the air duct 14.

[0120] In another embodiment, please continue to refer to Figure 7In the axial direction of the cross-flow fan 30, the included angle A between the line connecting the first volute tongue 103 and the closest point of the cross-flow fan 30 to the rotating shaft 31 and the vertical direction is greater than or equal to 0 degrees and less than or equal to 50 degrees. The included angle A between the line connecting the first volute tongue 103 and the closest point of the cross-flow fan 30 to the rotating shaft 31 and the vertical direction determines the approximate position of the first volute tongue 103. In the present embodiment, the first volute tongue 103 is located approximately in the middle of the front side of the casing 10, which provides sufficient space for the first air outlet 11 and ensures the size of the air inlet 13. Figure 7 The cross-flow fan 30 intake angle B formed between the first volute tongue 103 and the second volute tongue 104 is greater than or equal to 150 degrees and less than or equal to 180 degrees. In the present embodiment, the cross-flow fan 30 intake angle B formed between the first volute tongue 103 and the second volute tongue 104 refers to the included angle B between the line connecting the first volute tongue 103 and the closest point of the cross-flow fan 30 to the rotating shaft 31 and the line connecting the second volute tongue 104 and the closest point of the cross-flow fan 30 to the rotating shaft 31, which determines the approximate position of the second volute tongue 104. In the present embodiment, the second volute tongue 104 is located approximately at the lower side of the front side of the casing 10, which provides sufficient space for the second air outlet 12 and ensures the size of the air inlet 13.

[0121] It can be understood that the above two embodiments can also be implemented separately in combination with the foregoing embodiments, or in combination with each other.

[0122] The distance between the air duct wall and the fan of the existing air conditioner is usually a fixed value. When designing the heat exchange air duct, only the parameters under the rated operating condition are considered. The distance between the air duct wall and the fan of the existing air conditioner is usually designed according to the optimal gap corresponding to the small working noise when the air conditioner operates at a high wind speed. However, the air conditioner operates at a high wind speed for a small proportion of the time in actual use, resulting in a large working noise when the air conditioner operates at other air outlet speeds. It is known in the art that the distance between the air duct wall and the fan affects the working noise of the air conditioner.

[0123] To solve the above technical problems, on the basis of the above embodiment, the rotation angle of the air duct switching plate 20 in the first working position or the second working position can also be adjusted in a small range. In this embodiment, since the air duct switching plate 20 is arranged on the side of the wind wheel, and is movably arranged in the radial direction of the cross-flow fan 30, the distance t between the air duct switching plate 20 and the cross-flow fan 30 changes with the movement of the air duct switching plate. When the air conditioner indoor unit 100 works in different working conditions, the air duct switching plate 20 can be moved to a reasonable position with the cross-flow fan 30 to make the working noise value of the air conditioner indoor unit 100 relatively small. The air conditioner indoor unit 100 provided in this embodiment can more accurately adjust the working noise of the air conditioner indoor unit 100 by controlling the movement of the air duct switching plate 20, so that the noise value is relatively small when the air conditioner indoor unit 100 works in different working conditions, and the user experience is more comfortable.

[0124] In this embodiment, the matching position of the air duct switching plate 20 is related to the air outlet position of the air conditioner. At the same time, since the air duct 14 has different air duct resistance in the cooling mode and the heating mode, mainly due to the condensate water generated by the heat exchanger 50 in the cooling mode, the resistance of the air duct 14 increases. In the same air outlet position, the matching position of the air duct switching plate 20 corresponding to the cooling mode and the heating mode is also different. In this embodiment, the matching position of the air duct switching plate 20 and the injection relationship between the air conditioner in the cooling mode and the heating mode and different air outlet positions are shown in Table 1 and Table 2:

[0125] Table 1: Matching position and air outlet position injection relationship of air conditioner in cooling mode

[0126]

[0127] Table 2: Matching position and air outlet position injection relationship of air conditioner in cooling and heating mode

[0128]

[0129] Please refer to Figure 5 and Figure 6 It should be noted that when the matching angle F in the table is 0, the included angle between the tangent line of the air duct switching plate 20 at the rotating shaft 21 and the line connecting the rotating shaft 21 and the rotating shaft 31 is 108 degrees. The other matching angles F are relative values of the matching angle 0, wherein the positive matching angle F represents the angle of the air duct switching plate 20 rotating clockwise based on 0 degrees, and the negative matching angle F represents the angle of the air duct switching plate 20 rotating counterclockwise based on 0 degrees.

[0130] From Table 1 and Table 2, it can be seen that the interval t and / or the matching angle F feedback the matching position of the air duct switching plate 20, the air duct switching plate 20 has different air volume at different air outlet gears, and correspondingly has different matching positions. The matching position of the air duct switching plate 20 at a certain air outlet gear represents that when the air duct switching plate 20 is moved to the matching position, the noise value thereof is the minimum noise value at the air outlet gear. And the refrigeration mode and the heating mode have different intervals t to achieve the minimum noise value at different air volume gears. Adjusting the air duct switching plate 20 through the above injection relationship can make the air conditioner have an air volume increased by about 5%-15% at the same noise, and the lower the air outlet gear, the more obvious the improvement effect.

[0131] In an embodiment, referring to Figures 2 to 5 , and Figure 7 , the shell 10 has a mounting side 60 for mounting the air conditioner indoor unit 100, and a front side in front of the mounting side 60, and the air inlet 13 is arranged at the front side of the shell 10. The front side of the shell 10 is provided with a panel 40 extending in the up-down direction, which is arranged at the air inlet 13 in an openable and closable manner. The panel 40 has a first open position in the open state, in which the upper end of the panel 40 is rotationally connected to the shell 10, and the lower end of the panel 40 is separated from the shell 10. In the first open position, the panel 40 and the air inlet 13 form a lower air inlet channel with an open lower end, so that the air flow flows from the gap between the panel 40 and the lower side of the shell 10 to the air inlet 13 from bottom to top, and flows to the air inlet section 140. The actual air inlet position is far away from the first air port 11, and the air inlet direction is downward, which avoids the low-temperature air flow from the first air port 11 directly flowing to the air inlet 13, causing air flow short circuit phenomenon. In the second open position, the panel 40 and the air inlet 13 form an upper air inlet channel with an open upper end, so that the air flow flows from the gap between the panel 40 and the upper side of the shell 10 to the air inlet 13 from top to bottom, and flows to the air inlet section 140. The actual air inlet position is far away from the second air port 12, and the air inlet direction is upward, which avoids the high-temperature air flow from the second air port 12 directly flowing to the air inlet 13, causing air flow short circuit phenomenon. And the second open position is that the lower end of the panel 40 is rotationally connected to the shell 10, and the upper end of the panel 40 is separated from the shell 10.

[0132] In the embodiment, the air conditioner indoor unit 100 is in cooling mode, the bidirectional fan wheel rotates forwardly, the air duct switching plate 20 is switched to the first working position to form an upper air outlet air duct, and the panel 40 is switched to the first open position. At this time, indoor air flows from the lower side of the cabinet 10 to the upper side of the cabinet 10 along the gap formed between the cabinet 10 and the panel 40, to the air inlet section 140, is cooled by the heat exchanger 50 in the air inlet section 140, and is then sent out from the first air outlet 11 through the upper air outlet air duct. The first air outlet 11 is located at the upper side, and the extension direction of the upper air outlet air duct is forward and upward, so that the low-temperature air is sent to the indoor environment forwardly and upwardly, and the cold air sinks in the indoor environment. The cold air does not directly blow to the human body, the indoor air temperature is uniformly distributed, and the human body feels comfortable. The indoor air flows from the lower side to the upper side, the circulation range is large, the indoor air circulation is good, and the temperature distribution is uniform.

[0133] In the heating mode, the bidirectional fan wheel reverses, the air duct switching plate 20 is switched to the second working position to form a lower air outlet air duct, and the panel 40 is switched to the second open position. At this time, indoor air flows from the upper side of the cabinet 10 to the lower side of the cabinet 10 along the gap formed between the cabinet 10 and the panel 40, to the air inlet section 140, is heated by the heat exchanger 50 in the air inlet section 140, and is then sent out from the second air outlet 12 through the lower air outlet air duct. The second air outlet 12 is located at the upper side, and the extension direction of the lower air outlet air duct is downward, so that the high-temperature air is sent to the indoor environment downwardly, and the hot air rises in the indoor environment. The hot air does not directly blow to the human body, the heating stratification phenomenon is avoided, the indoor air temperature is uniformly distributed, and the human body feels comfortable. The indoor air flows from the upper side to the lower side, the circulation range is large, the indoor air circulation is good, and the temperature distribution is uniform.

[0134] In the embodiment, the opening degree of the panel 40 can also be adjusted to adjust the air outlet position of the air conditioner indoor unit 100. It can be understood that the greater the opening degree of the panel 40, the greater the air inlet amount at the air inlet 13, so that the actual heat exchange air amount of the air conditioner indoor unit 100 is greater, and the noise generated by the air conditioner indoor unit 100 is also greater. Generally, when the air conditioner indoor unit 100 is just started, in order to achieve rapid cooling or heating, the panel 40 needs to be opened to the maximum opening degree. When the indoor temperature reaches or approaches the preset target temperature value, the opening degree of the panel can be appropriately reduced to reduce the noise, and the appropriate panel opening degree is selected according to the factors of maintaining the indoor temperature constant, energy saving, indoor noise control, and the like. Please refer to Figure 7The panel 40 upper end opening 4b represents the opening angle of the panel 40 when the upper end of the panel 40 is rotatably connected to the casing 10 in the cooling mode. The panel 40 lower end opening represents the opening angle of the panel 40 when the lower end of the panel 40 is rotatably connected to the casing 10 in the heating mode.

[0135] Table 2 shows the relationship between the panel 40 opening and the air volume and noise. In Table 2, the air volume refers to the heat exchange air volume of the air conditioner indoor unit 100, and the noise refers to the noise decibel value generated by the air conditioner indoor unit 100 at the panel 40 opening.

[0136] Table 2: Relationship between panel 40 opening, air volume and noise

[0137]

[0138] Based on the above specific embodiments of the air conditioner indoor unit 100, embodiments of the control device, method and storage medium of the air conditioner indoor unit 100 are proposed.

[0139] Reference Figure 13 , Figure 13 The device structure diagram of the hardware running environment involved in the embodiment of the present application is shown.

[0140] As Figure 13 shown, the device can include a processor 1001 such as a CPU, a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. The communication bus 1002 is used to realize the connection and communication between these components. The user interface 1003 can include a display screen Display and an input unit such as a key. The optional user interface 1003 can also include a standard wired interface and a wireless interface. The network interface 1004 can optionally include a standard wired interface and a wireless interface such as a WI-FI interface. The memory 1005 can be a high-speed RAM memory or a stable memory non-volatile memory such as a magnetic disk memory. The memory 1005 can optionally be a storage device independent of the aforementioned processor 1001.

[0141] Those skilled in the art can understand Figure 13 that the control device structure of the air conditioner indoor unit 100 shown in the embodiment does not constitute a limitation on the control device of the air conditioner indoor unit 100, and can include more or fewer components than shown, or combine certain components, or different component arrangements.

[0142] As Figure 13 shown, the memory 1005 as a storage medium can include an operating system, a network communication module, a user interface module, and a control method program of the air conditioner indoor unit 100.

[0143] In Figure 13 The network interface 1004 is mainly used for connecting the server and communicating data with the server, and the user interface 1003 is mainly used for connecting the terminal and communicating data with the terminal. The control device of the air conditioner indoor unit 100 calls the control method program of the air conditioner indoor unit 100 stored in the memory 1005 through the processor 1001, and executes the control method of the air conditioner indoor unit 100 provided in the embodiment of the application.

[0144] Based on the above hardware structure, the embodiment of the control method of the air conditioner indoor unit 100 is proposed.

[0145] Referring to Figure 14 , Figure 14 The flowchart of the first embodiment of the control method of the air conditioner indoor unit 100 is shown. The control method of the air conditioner indoor unit 100 comprises:

[0146] Step S1, obtaining the working mode of the air conditioner indoor unit 100.

[0147] It should be noted that the execution subject of the embodiment can be the control device of the air conditioner indoor unit 100, and the control device of the air conditioner indoor unit 100 is provided with the control method program of the air conditioner indoor unit 100, and can also be other devices that can realize the same or similar functions. The embodiment does not limit this, and in the embodiment, the air conditioner is taken as an example for description. The controller can be provided in the air conditioner, and the control application program of the air conditioner indoor unit 100 is provided on the controller. The control of the air conditioner indoor unit 100 can be performed according to the control application program of the air conditioner indoor unit 100.

[0148] In specific implementation, the working mode includes heat exchange mode and / or air supply mode, which can be set by the user or pre-set by the manufacturer in the execution subject according to the current environmental temperature, humidity, time and other factors.

[0149] Specifically, the heat exchange mode includes a cooling mode or a heating mode, in the cooling mode, the heat exchanger 50 acts as an evaporator, in the heat exchange mode, the heat exchanger 50 acts as a condenser, and in combination with the setting positions of the first air outlet 11 and the second air outlet 12. In a specific implementation, when the first air outlet 11 is arranged above the second air outlet 12, in the cooling mode, the air supply flow is preferably sent out from the first air outlet 11 above, and in the heating mode, the air supply flow is preferably sent out from the second air outlet 12 below. In this way, in the cooling mode, the air conditioner indoor unit 100, the first air outlet 11 acts as an air outlet channel, and the low-temperature air flow sent out by the air duct 14 can be sent out from the first air outlet 11 forward and upward, and then the cold air sinks, the cold air does not blow directly on the human body, the indoor temperature distribution is uniform, and the human body feels comfortable. In the heating mode, the air conditioner indoor unit 100, the second air outlet 12 acts as an air outlet channel, and the high-temperature air flow sent out by the air duct 14 can be sent out from the second air outlet 12 downward, the hot air rises, and does not float above the indoor, avoiding the heating stratification phenomenon, the indoor temperature distribution is uniform, and the human body feels comfortable.

[0150] The air supply mode includes a non-mixing mode and a mixing mode. In the non-mixing mode, the air flow only flows into the air duct 14 from the air inlet 13, and is sent to the indoor from the first air outlet 11 or the second air outlet 12 after all the heat exchange. In the mixing mode, the air flow in the air duct 14 has different flow directions in the cooling mode and the heating mode. Specifically, in the cooling mode, the fan assembly 301 drives the mixed air entering from the second air outlet 12 and the heat exchange air entering from the air inlet section 140 to flow to the fan assembly 301 together, and after being fully stirred and mixed by the fan assembly 301, it is sent out from the first air outlet 11. In the heating mode, the fan assembly 301 drives the mixed air entering from the first air outlet 11 and the heat exchange air entering from the air inlet section 140 to flow to the fan assembly 301 together, and after being fully stirred and mixed by the fan assembly 301, it is sent out from the second air outlet 12. In this way, the indoor air is heat exchanged through the air duct 14 and mixed with the indoor air flow that is not heat exchanged to be sent, which can not only reduce the temperature difference between the air supply temperature of the air conditioner indoor unit 100 and the room temperature, speed up the indoor air circulation, reduce the heating temperature rise or cooling temperature drop time, and improve the human comfort, but also can fully mix the heat exchange air flow and the non-heat exchange air flow by the fan assembly 301, so that the air supply temperature of the air conditioner indoor unit 100 is uniform, avoids temperature stratification, and further improves the human comfort.

[0151] Step S2, according to the working mode, control the opening and closing of the first cover plate 51 and / or the second cover plate 52, and control the working of the fan assembly 301.

[0152] It should be noted that in the present embodiment, the first cover plate 51 is arranged to be openable and closable at the first air inlet 11, and the second cover plate 52 is arranged to be openable and closable at the second air inlet 12. In the present embodiment, by controlling the movement of the first cover plate 51 and the second cover plate 52, the opening and closing of the first air inlet 11 and the second air inlet 12 can be realized, and by controlling the opening degree of the first cover plate 51 or the second cover plate 52 at the air inlet as an air inlet passage, the mixed air volume, the heat exchange air volume and the total air volume can be controlled, and by controlling the opening degree of the first cover plate 51 or the second cover plate 52 at the air inlet as an air outlet passage, the air supply direction of the air conditioner indoor unit 100 can be controlled.

[0153] In the present step, according to the heat exchange mode and the air mixing mode of the air conditioner indoor unit 100, the first air inlet 11 and the second air inlet 12 can be selected by controlling the movement of the first cover plate 51 and the second cover plate 52. In a specific implementation, if only cooling is performed without air mixing, i.e. in a cooling and non-air mixing mode, the first cover plate 51 can be controlled to be opened, the second cover plate 52 can be controlled to be closed, and the opening degree of the first cover plate 51 can be adjusted to adjust the air supply direction of the first air inlet 11. If air mixing is performed simultaneously in the cooling mode, i.e. in a cooling and air mixing mode, the second cover plate 52 also needs to be opened, so that part of the indoor air flow does not pass through the heat exchanger 50, and is mixed uniformly with the heat exchange air flow at the fan assembly 301 before being supplied to the first air inlet 11, and the opening degree of the second cover plate 52 can also be adjusted to adjust the air mixing volume of the air conditioner.

[0154] If only heating is performed without air mixing, i.e. in a heating and air mixing mode, the second cover plate 52 can be controlled to be opened, the first cover plate 51 can be controlled to be closed, and the opening degree of the second cover plate 52 can be adjusted to adjust the air supply direction of the second air inlet 12. If air mixing is performed simultaneously in the heating mode, the first cover plate 51 also needs to be opened, so that part of the indoor air flow does not pass through the heat exchanger 50, and is mixed uniformly with the heat exchange air flow at the fan assembly 301 before being supplied to the second air inlet 12, and the opening degree of the first cover plate 51 can also be adjusted to adjust the air mixing volume of the air conditioner.

[0155] In the present embodiment, the user or the control system inside the air conditioner can adjust according to the actual needs, control the opening and closing of the first cover plate 51 and / or the second cover plate 52 in different heat exchange modes, select different air outlets and air inlets, adjust the air outlet direction, and select whether to mix air, so that the air conditioner indoor unit 100 has multiple air outlet modes that can be selected and adjusted, improving the user experience.

[0156] And, the air conditioner indoor unit 100 in the cooling mode, the first air outlet 11 as an air outlet, the air duct 14 sent out of the low-temperature airflow can be sent from the first air outlet 11 forward and upward, and the cold air sinks, the cold air does not blow directly to the human body, the indoor temperature distribution is uniform, and the human body feels comfortable. The air conditioner indoor unit 100 in the heating mode, the second air outlet 12 as an air outlet, the air duct 14 sent out of the high-temperature airflow can be sent from the second air outlet 12 downward, the hot air rises, and does not float in the upper part of the room, avoiding the heating stratification phenomenon. The indoor temperature distribution is uniform, and the human body feels comfortable. The mixed air can reduce the temperature difference between the air temperature of the air conditioner indoor unit 100 and the room temperature, accelerate the indoor air circulation, reduce the heating temperature rise or cooling temperature drop time, and improve the human comfort. The fan assembly 301 can fully mix the heat exchange airflow and the non-heat exchange airflow, so that the air temperature of the air conditioner indoor unit 100 is uniform, the temperature stratification is avoided, and the human comfort is further improved.

[0157] In an embodiment, as shown in FIG. 1, the control method of the air conditioner indoor unit 100 according to the first embodiment is provided. Figure 15 The control method of the air conditioner indoor unit 100 according to the second embodiment is provided based on the first embodiment.

[0158] In the second embodiment, the step S2 comprises:

[0159] In step S21, when the working mode is the mixed air mode, the first cover plate 51 and the second cover plate 52 are controlled to be opened, and the opening degree of the first cover plate 51 or the second cover plate 52 is controlled according to the preset mixed air gear. It should be noted that,

[0160] In this step, in the mixed air mode, it can be divided into a cooling mixed air mode or a heating mixed air mode. Specifically, the first cover plate 51 and the second cover plate 52 are opened, and the fan assembly 301 is controlled to work. Specifically, in the cooling mode, the fan assembly 301 drives the mixed air entering from the second air outlet 12 and the heat exchange air entering from the air inlet section 140 to flow to the fan assembly 301 together, and after being fully stirred and mixed by the fan assembly 301, the mixed air is sent out from the first air outlet 11. At this time, the mixed air amount of the air conditioner indoor unit 100 can be controlled by controlling the opening degree of the second cover plate 52. In the heating mode, the fan assembly 301 drives the mixed air entering from the first air outlet 11 and the heat exchange air entering from the air inlet section 140 to flow to the fan assembly 301 together, and after being fully stirred and mixed by the fan assembly 301, the mixed air is sent out from the second air outlet 12. At this time, the mixed air amount of the air conditioner indoor unit 100 can be controlled by controlling the opening degree of the first cover plate 51.

[0161] In the heating mode, when the opening degree of the second cover plate 52 is unchanged, and the opening degree of the first cover plate 51 is increased, the mixed air volume of the mixed air is increased, the heat exchange air volume of the heat exchange air is slightly reduced, and the total air volume of the air conditioner indoor unit 100 is increased. In the cooling mode, when the opening degree of the first cover plate 51 is unchanged, and the opening degree of the second cover plate 52 is increased, the mixed air volume of the mixed air is increased, the heat exchange air volume of the heat exchange air is slightly reduced, and the total air volume of the air conditioner indoor unit 100 is increased.

[0162] In the embodiment, the user or the control system inside the air conditioner can adjust according to the actual needs, control the opening and closing of the first cover plate 51 and / or the second cover plate 52 in different heat exchange modes, select different air outlet and air inlet, and adjust the air outlet direction, so that the air conditioner indoor unit 100 has multiple air outlet modes for selection and adjustment, and the user experience is improved. In the mixed air mode, the opening degree of the first cover plate 51 and the second cover plate 52 can be controlled, so that the mixed air volume of the air conditioner can be adjusted according to the actual needs to achieve the best heat exchange effect, improve indoor air circulation, and control noise to make the user feel comfortable.

[0163] In addition, in the cooling mode of the air conditioner indoor unit 100, the first air outlet 11 serves as an air outlet channel, and the low-temperature airflow sent by the air duct 14 can be sent from the first air outlet 11 to the front and upward, and then the cold air sinks, the cold air does not blow directly to the human body, the indoor temperature distribution is uniform, and the human body feels comfortable. In the heating mode of the air conditioner indoor unit 100, the second air outlet 12 serves as an air outlet channel, and the high-temperature airflow sent by the air duct 14 can be sent from the second air outlet 12 downward, and the hot air rises and does not float above the indoor, avoiding the heating stratification phenomenon, the indoor temperature distribution is uniform, and the human body feels comfortable. The mixed air can reduce the temperature difference between the air supply temperature of the air conditioner indoor unit 100 and the room temperature, speed up the indoor air circulation, reduce the heating temperature rise or cooling temperature drop time, and improve the human comfort, and can also fully mix the heat exchange airflow and the non-heat exchange airflow by using the fan assembly 301, so that the air supply temperature of the air conditioner indoor unit 100 is uniform, the temperature stratification is avoided, and the human comfort is further improved.

[0164] In an embodiment, as shown in Figure 16 a third embodiment of the control method of the air conditioner indoor unit 100 is provided based on the second embodiment.

[0165] In the third embodiment, the step S2 comprises:

[0166] Step S201, when the working mode is the cooling mixed air mode, the bidirectional fan is controlled to rotate forward, and the first cover plate 51 and the second cover plate 52 are controlled to open.

[0167] In this step, the heat exchanger 50 acts as an evaporator, and when the bidirectional fan wheel rotates forward, it drives a part of indoor airflow to flow into the air duct 14 through the second air inlet 12 and the air inlet 13 respectively, and the airflow flowing through the air inlet 13 is subjected to heat exchange. After the two airflows are fully stirred and mixed by the bidirectional fan wheel, they are sent out from the first air outlet 11. Then the cold air sinks, and the cold wind does not blow directly on the human body. The indoor temperature is uniformly distributed, and the human body feels comfortable. Mixing air can reduce the temperature difference between the air supply temperature of the air conditioner indoor unit 100 and the room temperature, speed up indoor air circulation, reduce heating temperature rise or cooling temperature drop time, and improve human comfort. In addition, the fan assembly 301 can fully mix the heat exchanged airflow and the non-heat exchanged airflow, so that the air supply temperature of the air conditioner indoor unit 100 is uniform, avoids temperature stratification, and further improves human comfort.

[0168] Step S202, when the working mode is the cooling non-mixing air mode, control the bidirectional fan wheel to rotate forward, and control the first cover plate 51 to open and the second cover plate 52 to close.

[0169] In this step, the heat exchanger 50 acts as an evaporator, and when the bidirectional fan wheel rotates forward, it drives a part of indoor airflow to flow into the air duct 14 through the second air inlet 12 and the air inlet 13 respectively, and the airflow flowing through the air inlet 13 is subjected to heat exchange. After the two airflows are fully stirred and mixed by the bidirectional fan wheel, they are sent out from the first air outlet 11. Then the cold air sinks, and the cold wind does not blow directly on the human body. The indoor temperature is uniformly distributed, and the human body feels comfortable. Mixing air can reduce the temperature difference between the air supply temperature of the air conditioner indoor unit 100 and the room temperature, speed up indoor air circulation, reduce heating temperature rise or cooling temperature drop time, and improve human comfort. In addition, the fan assembly 301 can fully mix the heat exchanged airflow and the non-heat exchanged airflow, so that the air supply temperature of the air conditioner indoor unit 100 is uniform, avoids temperature stratification, and further improves human comfort.

[0170] Step S203, when the working mode is the heating mixing air mode, control the bidirectional fan wheel to rotate reversely, and control the first cover plate 51 and the second cover plate 52 to open.

[0171] In this step, the heat exchanger 50 acts as a condenser, and when the bidirectional fan wheel rotates reversely, it drives a part of indoor airflow to flow into the air duct 14 through the first air outlet 11 and the air inlet 13 respectively, and the airflow flowing through the air inlet 13 is subjected to heat exchange. After the two airflows are fully stirred and mixed by the bidirectional fan wheel, they are sent out from the second air outlet 12. Hot air rises and does not float above the room, avoiding the heating stratification phenomenon. The indoor temperature is uniformly distributed, and the human body feels comfortable. Mixing air can reduce the temperature difference between the air supply temperature of the air conditioner indoor unit 100 and the room temperature, speed up indoor air circulation, reduce heating temperature rise or cooling temperature drop time, and improve human comfort. In addition, the fan assembly 301 can fully mix the heat exchanged airflow and the non-heat exchanged airflow, so that the air supply temperature of the air conditioner indoor unit 100 is uniform, avoids temperature stratification, and further improves human comfort.

[0172] Step S204, when the working mode is the heating non-mixing air mode, control the bidirectional fan wheel to rotate reversely, and control the first cover plate 51 to open and the second cover plate 52 to close.

[0173] In this step, the heat exchanger 50 acts as a condenser, when the bidirectional fan wheel reverses, the indoor airflow is driven to flow into the air duct 14 through the air inlet 13, and flows through the heat exchanger 50 for heat exchange, and is sent out from the second air outlet 12. Hot air rises and does not float above the indoor space, avoiding the heating stratification phenomenon. The indoor temperature is uniformly distributed, and the human body feels comfortable.

[0174] It should be noted that the above steps S201, S202, S203, and S204 can be implemented separately or in combination. Specifically, the actual heat exchange mode and the air supply mode of the air conditioner indoor unit 100 can be adjusted according to the actual heat exchange mode and the air supply mode of the air conditioner indoor unit 100.

[0175] In this embodiment, the user or the control system inside the air conditioner can adjust according to the actual demand, control the opening and closing of the first cover plate 51 and / or the second cover plate 52, and control the forward rotation or reverse rotation of the bidirectional fan wheel in different heat exchange modes, select different air outlet and air inlet, adjust the air outlet direction, so that the air conditioner indoor unit 100 has multiple air outlet modes that can be selected and adjusted, and improves the user experience.

[0176] In one embodiment, the fourth embodiment of the control method of the air conditioner indoor unit 100 is based on the first embodiment or the second embodiment.

[0177] In the fourth embodiment, the step S2 comprises:

[0178] When the working mode is the cooling mixed air mode, the bidirectional fan wheel is controlled to rotate forward, the air duct switching plate 20 is controlled to switch to the first working position, and the first cover plate 51 and the second cover plate 52 are controlled to be opened.

[0179] In this step, the heat exchanger 50 acts as an evaporator, the air duct switching plate 20 is switched to the first working position to form an upwardly extending upper air outlet air duct. When the bidirectional fan wheel rotates forward, a part of the indoor airflow is driven to flow into the air duct 14 through the second air outlet 12 and the air inlet 13, respectively, and the airflow flowing through the air inlet 13 is heat-exchanged. After the two airflows are fully stirred and mixed by the bidirectional fan wheel, they are sent out from the first air outlet 11. Then the cold air sinks, and the cold air does not blow directly on the human body. The indoor temperature is uniformly distributed, and the human body feels comfortable. The mixed air can reduce the temperature difference between the air supply temperature of the air conditioner indoor unit 100 and the room temperature, speed up the indoor air circulation, reduce the heating temperature rise or cooling temperature drop time, and improve the human comfort. The fan assembly 301 can fully mix the heat-exchanged airflow and the non-heat-exchanged airflow, so that the air supply temperature of the air conditioner indoor unit 100 is uniform, avoiding temperature stratification, and further improving human comfort.

[0180] Alternatively, the step S2 comprises:

[0181] When the working mode is the cooling non-mixing mode, the bidirectional fan wheel is controlled to rotate forwardly, the air duct switching plate 20 is controlled to switch to the first working position, and the first cover plate 51 is controlled to open and the second cover plate 52 is controlled to close.

[0182] In this step, the heat exchanger 50 works as an evaporator, the air duct switching plate 20 switches to the first working position, and an upwardly extending upper air outlet duct is formed. When the bidirectional fan wheel rotates forwardly, indoor air flows into the air duct 14 through the air inlet 13 and flows through the heat exchanger 50 to be heated, and then is sent out from the first air outlet 11. Then, the cold air sinks, the cold air does not blow directly on the human body, and the indoor temperature is uniformly distributed, so that the human body feels comfortable.

[0183] Alternatively, the step S2 comprises:

[0184] When the working mode is the heating mixing mode, the bidirectional fan wheel is controlled to rotate reversely, the air duct switching plate 20 is controlled to switch to the second working position, and the first cover plate 51 and the second cover plate 52 are controlled to open.

[0185] In this step, the heat exchanger 50 works as a condenser, the air duct switching plate 20 switches to the second working position, and a downwardly extending lower air outlet duct is formed. When the bidirectional fan wheel rotates reversely, a part of indoor air flows into the air duct 14 through the first air outlet 11 and the air inlet 13 respectively, and the air flowing through the air inlet 13 is heated. After the two air flows are fully mixed by the bidirectional fan wheel, the air is sent out from the second air outlet 12. The hot air rises and does not float in the upper part of the room, so that the heating stratification phenomenon is avoided, the indoor temperature is uniformly distributed, and the human body feels comfortable. The mixing can reduce the temperature difference between the air supply temperature of the air conditioner indoor unit 100 and the room temperature, accelerate the indoor air circulation, reduce the heating temperature rise or cooling temperature drop time, and improve the human comfort. In addition, the fan assembly 301 can fully mix the heated air flow and the unheated air flow, so that the air supply temperature of the air conditioner indoor unit 100 is uniform, the temperature stratification is avoided, and the human comfort is further improved.

[0186] Alternatively, the step S2 comprises:

[0187] When the working mode is the heating non-mixing mode, the bidirectional fan wheel is controlled to rotate reversely, the air duct switching plate 20 is controlled to switch to the second working position, and the first cover plate 51 is controlled to open and the second cover plate 52 is controlled to close.

[0188] In the present step, the heat exchanger 50 acts as a condenser, the air duct switching plate 20 is switched to the second working position, forming a downwardly extending lower air outlet air duct. When the bidirectional fan reverses, the indoor air flow is driven to flow into the air duct 14 through the air inlet 13, and flows through the heat exchanger 50 for heat exchange, and is sent out from the second air outlet 12. Hot air rises and does not float above the indoor space, avoiding the heating stratification phenomenon. The indoor temperature is uniformly distributed, and the human body feels comfortable.

[0189] It should be noted that the above four can be implemented separately or in combination. Specifically, the actual heat exchange mode and the air supply mode of the air conditioner indoor unit 100 can be adjusted according to the actual heat exchange mode and the air supply mode of the air conditioner indoor unit 100.

[0190] In the present embodiment, the user or the control system inside the air conditioner can adjust according to the actual demand, control the opening and closing of the first cover plate 51 and / or the second cover plate 52, and control the forward rotation or reverse rotation of the bidirectional fan in different heat exchange modes, select different air outlet and air inlet, adjust the air outlet direction, so that the air conditioner indoor unit 100 has multiple air outlet modes to be selected and adjusted, and the user experience is improved. And according to the actual demand, adjust the position of the air duct switching plate 20, so that the direction of the actual air outlet air duct 14 is adapted to the required air outlet direction, reduces the air resistance, increases the air supply amount, the air supply distance is farther, the indoor air circulation is better, and the temperature distribution is uniform.

[0191] In one embodiment, based on the first embodiment or the second embodiment, a fifth embodiment of a control method of the air conditioner indoor unit 100 is provided.

[0192] In the fifth embodiment, the step S2 comprises:

[0193] When the working mode is the cooling mixed air mode, the bidirectional fan is controlled to rotate forward, the panel 40 is controlled to switch to the first open position, the opening degree of the panel 40 is controlled according to the preset air outlet gear, and the first cover plate 51 and the second cover plate 52 are controlled to be opened.

[0194] In this step, the heat exchanger 50 acts as an evaporator, and the panel 40 is switched to the first open position. When the bidirectional fan wheel is rotating forward, a part of indoor airflow is driven to flow from the lower side of the cabinet 10 to the air inlet section 140 along the gap formed between the cabinet 10 and the panel 40, and then flows to the bidirectional fan wheel after being cooled by the heat exchanger 50 in the air inlet section 140. Another part of indoor airflow flows to the bidirectional fan wheel from the second air inlet 13. After the two streams of airflow are fully mixed by the bidirectional fan wheel, they are sent out from the first air outlet 11. Then, the cold air sinks, the cold air does not directly blow on the human body, the indoor temperature is uniformly distributed, and the human body feels comfortable. The air mixing can reduce the temperature difference between the air supply temperature of the air conditioner indoor unit 100 and the room temperature, accelerate indoor air circulation, reduce heating temperature rise or cooling temperature drop time, and improve human comfort. In addition, the fan assembly 301 can fully mix the heat-exchanged airflow and the un-heat-exchanged airflow, so that the air supply temperature of the air conditioner indoor unit 100 is uniform, the temperature stratification is avoided, and the human comfort is further improved.

[0195] Alternatively, the step S2 comprises:

[0196] When the working mode is the cooling non-mixing mode, the bidirectional fan wheel is controlled to rotate forward, the panel 40 is controlled to switch to the first open position, the opening degree of the panel 40 is controlled according to the preset air outlet position, the first cover plate 51 is controlled to be opened, and the second cover plate 52 is controlled to be closed.

[0197] In this step, the heat exchanger 50 acts as an evaporator, and the panel 40 is switched to the first open position. When the bidirectional fan wheel is rotating forward, a part of indoor airflow is driven to flow from the lower side of the cabinet 10 to the air inlet section 140 along the gap formed between the cabinet 10 and the panel 40, and then flows to the bidirectional fan wheel after being cooled by the heat exchanger 50 in the air inlet section 140. Another part of indoor airflow flows to the bidirectional fan wheel from the second air inlet 13. After the two streams of airflow are fully mixed by the bidirectional fan wheel, they are sent out from the first air outlet 11. Then, the cold air sinks, the cold air does not directly blow on the human body, the indoor temperature is uniformly distributed, and the human body feels comfortable.

[0198] Alternatively, the step S2 comprises:

[0199] When the working mode is the heating mixing mode, the bidirectional fan wheel is controlled to rotate reversely, the panel 40 is controlled to switch to the second open position, the opening degree of the panel 40 is controlled according to the preset air outlet position, and the first cover plate 51 and the second cover plate 52 are controlled to be opened.

[0200] In this step, the heat exchanger 50 acts as a condenser, and the panel 40 is switched to the second open position. When the bidirectional fan wheel is reversed, a part of indoor airflow is driven to flow from the top to the bottom along the gap between the casing 10 and the panel 40 to the air inlet section 140, and then is heated and warmed by the heat exchanger 50 in the air inlet section 140, and then flows to the bidirectional fan wheel. Another part of indoor airflow flows from the first air inlet 13 to the bidirectional fan wheel. After the two airflows are fully mixed by the bidirectional fan wheel, the mixed airflow is sent out from the second air outlet 12. The hot air rises and does not float above the indoor space, thereby avoiding the heating stratification phenomenon. The indoor temperature is uniformly distributed, and the human body feels comfortable. The air mixing can reduce the temperature difference between the air supply temperature of the air conditioner indoor unit 100 and the room temperature, accelerate the indoor air circulation, reduce the heating temperature rise or cooling temperature drop time, and improve the human comfort. In addition, the fan assembly 301 can fully mix the heated airflow and the unheated airflow, so that the air supply temperature of the air conditioner indoor unit 100 is uniform, the temperature stratification is avoided, and the human comfort is further improved.

[0201] Alternatively, the step S2 comprises:

[0202] When the working mode is the heating non-mixing mode, the bidirectional fan wheel is controlled to be reversed, the panel 40 is controlled to be switched to the second open position, the opening degree of the panel 40 is controlled according to the preset air outlet position, the first cover plate 51 is controlled to be opened, and the second cover plate 52 is controlled to be closed.

[0203] In this step, the heat exchanger 50 acts as a condenser, and the panel 40 is switched to the second open position. When the bidirectional fan wheel is reversed, a part of indoor airflow is driven to flow from the top to the bottom along the gap between the casing 10 and the panel 40 to the air inlet section 140, and then is heated and warmed by the heat exchanger 50 in the air inlet section 140, and then flows to the bidirectional fan wheel. Another part of indoor airflow flows from the first air inlet 13 to the bidirectional fan wheel. After the two airflows are fully mixed by the bidirectional fan wheel, the mixed airflow is sent out from the second air outlet 12. The hot air rises and does not float above the indoor space, thereby avoiding the heating stratification phenomenon. The indoor temperature is uniformly distributed, and the human body feels comfortable.

[0204] In the above embodiment, the air outlet position of the air conditioner indoor unit 100 can also be adjusted by adjusting the opening degree of the panel 40. It can be understood that the greater the opening degree of the panel 40, the greater the air inlet amount at the air inlet 13, so that the actual heat exchange air amount of the air conditioner indoor unit 100 is greater, and the noise generated by the air conditioner indoor unit 100 is also greater. Generally, when the air conditioner indoor unit 100 is just started, the panel 40 needs to be opened to the maximum opening degree in order to achieve rapid cooling or heating. When the indoor temperature reaches or approaches the preset target temperature value, the opening degree of the panel 40 can be appropriately reduced to reduce the noise. The appropriate opening degree of the panel 40 can be selected according to the factors of maintaining the indoor temperature constant, energy saving, indoor noise control, and the like. Please refer toFigure 7 Panel 40 upper end opening 4b represents the opening angle of the panel 40 in the case that the upper end of the panel 40 is rotationally connected to the cabinet 10 in the cooling mode. The panel 40 lower end opening represents the opening angle of the panel 40 in the case that the lower end of the panel 40 is rotationally connected to the cabinet 10 in the heating mode.

[0205] It should be noted that the above four can be implemented separately or in combination. Specifically, the actual heat exchange mode and the air supply mode of the air conditioner indoor unit 100 can be adjusted according to the actual needs.

[0206] In this embodiment, the user or the control system inside the air conditioner can adjust according to the actual needs, control the opening and closing of the first cover plate 51 and / or the second cover plate 52, and control the forward rotation or reverse rotation of the bidirectional fan wheel in different heat exchange modes, select different air outlet and air inlet, adjust the air outlet direction, so that the air conditioner indoor unit 100 has multiple air outlet modes to be selected and adjusted, and the user experience is improved. The setting of the panel 40 makes the actual air inlet position far away from the actual air outlet position, avoiding the air outlet airflow of the air conditioner indoor unit 100 directly flowing to the air inlet 13, causing airflow short circuit phenomenon.

[0207] In a specific application, in an embodiment, when receiving the user mode setting, first determine whether the heat exchange mode is cooling mode or heating mode, if it is cooling mode, control the bidirectional fan wheel to rotate forward, open the first cover plate 51, control the air duct switching plate 20 to switch to the first working position, and control the panel 40 to switch to the first opening position, and control the panel 40 to open to the appropriate opening degree according to the set air outlet position. Further determine whether it is a mixed air mode, if so, open the second cover plate 52, and control the second cover plate 52 to the appropriate opening degree according to the set mixed air position. During the operation of the air conditioner indoor unit 100, if the air outlet position or the mixed air position changes, the opening degree of the panel 40 and the second cover plate 52 can also be adjusted according to the actual needs. If it is heating mode, control the bidirectional fan wheel to rotate reversely, open the second cover plate 52, control the air duct switching plate 20 to switch to the second working position, and control the panel 40 to switch to the second opening position, and control the panel 40 to open to the appropriate opening degree according to the set air outlet position. Further determine whether it is a mixed air mode, if so, open the first cover plate 51, and control the first cover plate 51 to the appropriate opening degree according to the set mixed air position. During the operation of the air conditioner indoor unit 100, if the air outlet position or the mixed air position changes, the opening degree of the panel 40 and the first cover plate 51 can also be adjusted according to the actual needs.

[0208] In an embodiment, based on the first embodiment, a sixth embodiment of the control method of the air conditioner indoor unit 100 is proposed.

[0209] In the sixth embodiment, the step S1 comprises:

[0210] Obtaining the heat exchange mode and the air outlet position of the air conditioner indoor unit.

[0211] In this step, the heat exchange mode can be set by the user, or the manufacturer can preset the condition in the execution body, so that the execution body can automatically determine according to the current environmental temperature, humidity, time and other factors. Specifically, the heat exchange mode includes cooling mode or heating mode, in the cooling mode, the heat exchanger 50 acts as an evaporator, and in the heat exchange mode, the heat exchanger 50 acts as a condenser. In a specific implementation, the air volume of different air outlet positions can be pre-set by the manufacturer of the air conditioner indoor unit 100, and different air outlet positions correspond to different air volumes. In this embodiment, the air outlet position includes super high, high, medium, low and silent, and the air volume decreases in turn. When the air conditioner indoor unit 100 is used, the air outlet position can be automatically set by the air conditioner indoor unit 100 according to the environmental parameters, or it can be selected by the user.

[0212] The step S1 comprises:

[0213] According to the mapping relationship between the air outlet position corresponding to the heat exchange mode and the matching position, the matching position of the air duct switching plate is obtained.

[0214] It should be noted that the matching position of the air duct switching plate 20 at a certain air outlet position represents that when the air duct switching plate 20 moves to the matching position, the noise value is the smaller noise value under the air outlet position. In a specific implementation, the matching position corresponding to different air outlet positions can be pre-set by the manufacturer before the air conditioner indoor unit 100 is shipped. So that the noise value of the air conditioner indoor unit 100 is within the preset range, and the specific range of the preset range is not limited, and the specific preset range refers to not greater than the noise value of the air conditioner indoor unit 100 under the air outlet position when the air duct switching plate 20 is fixedly arranged.

[0215] It should be noted that the matching position of the air duct switching plate 20 is related to the air outlet position of the air conditioner indoor unit 100. At the same time, due to the different air duct resistances of the air duct 14 in the cooling mode and the heating mode, the resistance of the air duct 14 increases mainly due to the condensate water generated by the heat exchanger 50 in the cooling mode. In the cooling mode and the heating mode, the corresponding matching positions of the air duct switching plate 20 are also different at the same air outlet position. In specific implementation, the matching position of the air duct switching plate 20 and the injection relationship of the air conditioner indoor unit 100 at different air outlet positions in the cooling mode and the heating mode can be shown in Table 1 and Table 2 above. It should be noted that the air duct switching plate 20 in the embodiment is not limited to rotating installation, and in other embodiments, the corresponding matching positions of the air duct switching plate 20 at different heat exchange modes and air outlet positions can also be set according to other ways set by the manufacturer.

[0216] Controlling the air duct switching plate to move to the matching position.

[0217] In specific implementation, when the air conditioner indoor unit 100 operates in a certain heat exchange mode and air outlet position, the air duct switching plate 20 can be controlled to move to the corresponding switching angle and / or the matching position of the air duct switching plate 20 and the minimum distance t between the air duct switching plate 20 and the fan wheel meet the distance t requirement in Table 1 according to Table 1 and Table 2 above.

[0218] In the embodiment, since the air duct switching plate 20 and the fan wheel are relatively movably arranged, the distance t between the air duct switching plate 20 and the fan wheel changes with the movement of the air duct switching plate. When the air conditioner indoor unit 100 works in different air outlet positions and heat exchange modes, the air duct switching plate 20 can move to the matching position with a reasonable distance between the air duct switching plate 20 and the fan wheel, so that the working noise value of the air conditioner indoor unit 100 is relatively small. The air conditioner indoor unit 100 provided in the embodiment can more accurately adjust the working noise of the air conditioner indoor unit 100 by controlling the movement of the air duct switching plate 20, so that the noise value is relatively reduced when the air conditioner indoor unit 100 operates in different air outlet positions, and the user experience is more comfortable.

[0219] In an embodiment, a control method of the air conditioner indoor unit 100 according to the sixth embodiment is provided in the seventh embodiment.

[0220] In the seventh embodiment, the step of obtaining the matching position of the air duct switching plate according to the mapping relationship between the air outlet position corresponding to the heat exchange mode and the matching position includes:

[0221] Obtaining the matching angle of the air duct switching plate according to the mapping relationship between the air outlet position corresponding to the heat exchange mode and the matching angle.

[0222] In an embodiment, the matching positions of the air duct switching plate 20 and the injection relationship of the air conditioner indoor unit 100 with different air outlet positions in the cooling mode and the heating mode can be as shown in Table 1 and Table 2 above. In a specific implementation, the matching angle F of the air duct switching plate 20 can be obtained according to the mapping relationship between the air outlet position and the matching angle shown in Table 1 and Table 2 above. In other embodiments, the matching positions of the air duct switching plate 20 corresponding to different heat exchange modes and air outlet positions can also be set according to other ways set by the manufacturer.

[0223] The step of controlling the air duct switching plate to move to the matching position includes:

[0224] determining a target switching angle according to the difference between the current angle of the air duct switching plate and the matching angle

[0225] In this step, the current angle can be one of the matching angles F, or a value different from the matching angles F, but based on the same reference, an angle value can be measured to feedback the actual rotation position of the air duct switching plate 20.

[0226] The difference between the current angle and the matching angle F is the target switching angle. When the difference is positive, the air duct switching plate 20 rotates clockwise by the target switching angle from the current angle to reach the matching angle F. When the difference is negative, the air duct switching plate 20 rotates counterclockwise by the target switching angle from the current angle to reach the matching angle F.

[0227] Controlling the air duct switching plate to rotate through the target switching angle.

[0228] In this step, by controlling the air duct switching plate 20 to rotate through the target switching angle, the air duct switching plate 20 can be moved to the matching position.

[0229] In this embodiment, the matching position of the air duct switching plate 20 is determined according to the heat exchange mode and different air outlet positions of the air conditioner indoor unit 100. Considering the difference in air duct resistance of the air duct 14 in the cooling mode and the heating mode, the control is more accurate, and the working noise of the air conditioner indoor unit 100 is smaller. According to the movement mode of the air duct switching plate 20, the air duct switching plate 20 can be switched to the corresponding matching position by controlling the air duct switching plate 20 to rotate through the target switching angle, which is simple to operate.

[0230] In addition, to achieve the above-mentioned purpose, the application also provides a control device, which comprises a memory, a processor, and an air conditioner indoor unit control program stored in the memory and executable on the processor. The air conditioner indoor unit control program is configured to implement the air conditioner indoor unit control method as described above.

[0231] Since the control device adopts all the technical solutions of the above-mentioned embodiments, it has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here.

[0232] In addition, to achieve the above-mentioned purposes, the application further provides an air conditioner, which comprises the control device, and the control device comprises a memory, a processor, and an air conditioner indoor unit control program stored in the memory and executable on the processor, and the air conditioner indoor unit control program is configured to implement the air conditioner indoor unit control method as described above.

[0233] Since the air conditioner adopts all the technical solutions of the above-mentioned embodiments, it has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here.

[0234] In addition, the application further provides a storage medium, which stores an air conditioner indoor unit control program, and the air conditioner indoor unit control program, when executed by a processor, implements the air conditioner indoor unit control method as described above.

[0235] Since the storage medium adopts all the technical solutions of the above-mentioned embodiments, it has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here.

[0236] It should be noted that in this document, the terms "comprising", "including", or any other variant thereof are intended to cover non-exclusive inclusion, so that processes, methods, articles, or systems including a series of elements not only include those elements, but also include other elements not explicitly listed, or inherent to such processes, methods, articles, or systems. Without more limitations, the element defined by the statement "comprising a" does not exclude the presence of other identical elements in the process, method, article, or system including the element.

[0237] The above-mentioned application embodiment serial numbers are only for description, and do not represent the advantages and disadvantages of the embodiments.

[0238] Through the above description of the embodiments, those skilled in the art can clearly understand that the above-mentioned example method can be realized by means of software and a necessary general hardware platform, and of course, it can also be realized by hardware, but in many cases, the former is a better embodiment. Based on such understanding, the technical solutions of the present application can be embodied in the form of a software product, which is stored in a computer readable storage medium (such as a ROM / RAM, a magnetic disk, or an optical disc) as described above, and includes a plurality of instructions for causing an intelligent terminal (which can be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to execute the method described in each embodiment of the present application.

[0239] The above is only the preferred embodiment of the present application, and does not limit the patent scope of the present application, and any equivalent structure or equivalent flow transformation made by using the content of the specification and drawings of the present application, or directly or indirectly applied to other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. An air conditioner indoor unit characterized by comprising: The air conditioner indoor unit comprises: a cabinet, which is formed with an air duct, an air inlet, a first air outlet and a second air outlet, and the air duct comprises an air inlet section adjacent to the air inlet; a heat exchanger arranged in the air inlet section; and a fan assembly arranged in the air duct and located outside an air outlet end of the air inlet section; wherein the fan assembly is arranged to drive air flow from one of the first air outlet and the second air outlet, the air inlet and the other of the first air outlet and the second air outlet; the first air outlet and the second air outlet are arranged in a vertical direction; the fan assembly comprises a bidirectional fan wheel; the air duct further comprises a first air duct section adjacent to the first air outlet and a second air duct section adjacent to the second air outlet; the air conditioner indoor unit further comprises an air duct switching plate, which constitutes part of the air duct wall, and is movably arranged in the cabinet to have a first working position and a second working position, wherein the air inlet port of the first air duct section gradually increases in the movement stroke of the air duct switching plate from the first working position to the second working position, and the air inlet port of the second air duct section gradually increases in the movement stroke of the air duct switching plate from the second working position to the first working position; the bidirectional fan wheel is a cross-flow fan wheel, the air inlet is located between the first air outlet and the second air outlet in the vertical direction, the air duct switching plate is arranged on the side of the cross-flow fan wheel away from the air inlet, and is in the form of an arc-shaped plate curved away from the cross-flow fan wheel; the air duct switching plate is rotatably installed on the cabinet, and the rotation axis of the air duct switching plate is arranged side by side with the rotation shaft of the cross-flow fan wheel, the air duct switching plate has a first rotation end and a second rotation end arranged opposite on both sides of the rotation axis, the first rotation end is close to the first air duct section, and the second rotation end is close to the second air duct section; when the air duct switching plate is in the first working position, the first rotation end is away from the cross-flow fan wheel, and the second rotation end is close to the cross-flow fan wheel, and when the air duct switching plate is in the second working position, the first rotation end is close to the cross-flow fan wheel, and the second rotation end is away from the cross-flow fan wheel.

2. The air conditioning indoor unit as claimed in claim 1, wherein, first and second cover plates are movably arranged on the cabinet, the first cover plate is openably arranged on the first air outlet, and the second cover plate is openably arranged on the second air outlet.

3. The air conditioning indoor unit as claimed in claim 2, wherein the cabinet has a mounting side and a front side located in front of the mounting side, the first air outlet and the second air outlet are arranged in the vertical direction, the first air outlet is open upward and forward, and the second air outlet is open downward; the first cover plate is rotatably installed on the upper side edge of the first air outlet, and the opening degree of the first cover plate is greater than or equal to 0 degrees and less than or equal to 50 degrees; and / or the second cover plate is rotatably installed on the rear side edge of the second air outlet, and the opening degree of the second cover plate is greater than or equal to 0 degrees and less than or equal to 90 degrees.

4. The air conditioning indoor unit as claimed in claim 1, wherein the heat exchanger is arranged in the form of an arc-shaped plate curved toward the air inlet.

5. The air conditioning indoor unit as claimed in claim 1, wherein In the axial direction of the cross-flow fan, the included angle between the line connecting the rotating shaft and the rotating shaft and the vertical direction is greater than or equal to 30 degrees and less than or equal to 60 degrees; and / or, The radius of the cross-flow fan is R, and the minimum distance S between the rotating shaft and the rotating shaft is greater than or equal to 1.2R and less than or equal to 1.6R. 6.The indoor unit of the air conditioner of claim 1, wherein, The air duct wall of the air inlet section includes a first volute tongue and a second volute tongue, which are arranged in the up-down direction. The first volute tongue is arranged to extend from the upper side of the air inlet to the direction of the cross-flow fan, and the second volute tongue is arranged to extend from the lower side of the air inlet to the direction of the cross-flow fan.

7. The air conditioning indoor unit as claimed in claim 6, wherein The minimum distance between the first volute tongue and the rotating shaft is greater than or equal to 1.1R and less than or equal to 1.3R; and / or, The minimum distance between the second volute tongue and the rotating shaft is greater than or equal to 1.1R and less than or equal to 1.3R; and / or, In the axial direction of the cross-flow fan, the included angle between the line connecting the closest point of the first volute tongue and the rotating shaft and the vertical direction is greater than or equal to 0 degrees and less than or equal to 50 degrees; and / or, The cross-flow fan intake angle formed between the first volute tongue and the second volute tongue is greater than or equal to 150 degrees and less than or equal to 180 degrees. 8.The indoor unit of the air conditioner of claim 1, wherein, The cabinet has a mounting side for mounting the air conditioner indoor unit, and a front side located in front of the mounting side, and the air inlet is provided on the front side of the cabinet; The front side of the cabinet is provided with a panel extending in the up-down direction, which is openably arranged at the air inlet. In the open state, the panel has a first open position in which the upper end of the panel is rotatably connected to the cabinet and the lower end of the panel is separated from the cabinet, and a second open position in which the lower end of the panel is rotatably connected to the cabinet and the upper end of the panel is separated from the cabinet. 9.A control method of an air conditioner indoor unit, the control method comprising: The air conditioner indoor unit is as claimed in any one of claims 1 to 8, and the cabinet is movably provided with a first cover plate and a second cover plate. The first cover plate is openably arranged at the first air inlet, and the second cover plate is openably arranged at the second air inlet. The control method of the air conditioner indoor unit comprises: Obtaining the working mode of the air conditioner indoor unit; Controlling the opening and closing of the first cover plate and / or the second cover plate according to the working mode, and controlling the operation of the fan assembly. 10.The control method of the air-conditioner indoor unit of claim 9, wherein, The step of controlling the opening and closing of the first cover plate and / or the second cover plate according to the working mode, and controlling the operation of the fan assembly comprises: When the working mode is the air mixing mode, the first cover plate and the second cover plate are controlled to be opened, and the opening degree of the first cover plate or the second cover plate is controlled according to the preset air mixing gear. 11.The control method of the air conditioner indoor unit of claim 9 or 10, wherein, The step of controlling the opening and closing of the first cover plate and / or the second cover plate according to the working mode, and controlling the operation of the fan assembly comprises: When the working mode is the cooling air mixing mode, the bidirectional fan is controlled to rotate forward, and the first cover plate and the second cover plate are controlled to be opened; and / or, When the working mode is the cooling non-air mixing mode, the bidirectional fan is controlled to rotate forward, the first cover plate is controlled to be opened, and the second cover plate is controlled to be closed; and / or, when the working mode is the heating mixed air mode, controlling the bidirectional wind wheel to reverse rotation, and controlling the first cover plate and the second cover plate to open; and / or, when the working mode is the heating non-mixed air mode, controlling the bidirectional wind wheel to reverse rotation, and controlling the first cover plate to open and the second cover plate to close. 12.The control method of the air conditioner indoor unit of claim 9 or 10, wherein, The step of controlling the first cover plate and / or the second cover plate to open or close according to the working mode and controlling the fan assembly to work comprises: when the working mode is the cooling mixed air mode, controlling the bidirectional wind wheel to forward rotation, controlling the air duct switching plate to switch to the first working position, and controlling the first cover plate and the second cover plate to open; and / or, when the working mode is the cooling non-mixed air mode, controlling the bidirectional wind wheel to forward rotation, controlling the air duct switching plate to switch to the first working position, and controlling the first cover plate to open and the second cover plate to close; and / or, when the working mode is the heating mixed air mode, controlling the bidirectional wind wheel to reverse rotation, controlling the air duct switching plate to switch to the second working position, and controlling the first cover plate and the second cover plate to open; and / or, when the working mode is the heating non-mixed air mode, controlling the bidirectional wind wheel to reverse rotation, controlling the air duct switching plate to switch to the second working position, and controlling the first cover plate to open and the second cover plate to close. 13.The control method of the air conditioner indoor unit of claim 9 or 10, wherein, The cabinet has a mounting side for mounting the air conditioner indoor unit and a front side in front of the mounting side, the air inlet is arranged on the front side of the cabinet, the front side of the cabinet is provided with a panel extending in the up-down direction, the panel is arranged at the air inlet in an openable and closable manner, the panel has a first open position in an open state, in which the upper end of the panel is rotationally connected with the cabinet and the lower end of the panel is separated from the cabinet, and a second open position, in which the lower end of the panel is rotationally connected with the cabinet and the upper end of the panel is separated from the cabinet; The step of controlling the first cover plate and / or the second cover plate to open or close according to the working mode and controlling the fan assembly to work comprises: when the working mode is the cooling mixed air mode, controlling the bidirectional wind wheel to forward rotation, controlling the panel to switch to the first open position, controlling the opening degree of the panel according to a preset air outlet gear, and controlling the first cover plate and the second cover plate to open; and / or, when the working mode is the cooling non-mixed air mode, controlling the bidirectional wind wheel to forward rotation, controlling the panel to switch to the first open position, controlling the opening degree of the panel according to a preset air outlet gear, and controlling the first cover plate to open and the second cover plate to close; and / or, when the working mode is the heating mixed air mode, controlling the bidirectional wind wheel to reverse rotation, controlling the panel to switch to the second open position, controlling the opening degree of the panel according to a preset air outlet gear, and controlling the first cover plate and the second cover plate to open; and / or, when the working mode is the heating non-mixed air mode, controlling the bidirectional wind wheel to reverse rotation, controlling the panel to switch to the second open position, controlling the opening degree of the panel according to a preset air outlet gear, and controlling the first cover plate to open and the second cover plate to close. When the working mode is the heating non-mixing mode, the bidirectional wind wheel is controlled to reverse, the panel is controlled to switch to the second open position, the opening degree of the panel is controlled according to a preset air outlet position, the first cover plate is controlled to open, and the second cover plate is controlled to close. 14.The control method of the air-conditioner indoor unit of claim 9, wherein, The step of obtaining the working mode of the air conditioner indoor unit comprises: obtaining a heat exchange mode and an air outlet position of the air conditioner indoor unit; The step of obtaining the working mode of the air conditioner indoor unit comprises: According to the mapping relationship between the air outlet position corresponding to the heat exchange mode and the matching position, the matching position of the air duct switching plate is obtained. The air duct switching plate is controlled to move to the matching position.

15. The control method of the air conditioner indoor unit according to claim 14, wherein The step of obtaining the matching position of the air duct switching plate according to the mapping relationship between the air outlet position corresponding to the heat exchange mode and the matching position comprises: According to the mapping relationship between the air outlet position corresponding to the heat exchange mode and the matching angle, the matching angle of the air duct switching plate is obtained. The step of controlling the air duct switching plate to move to the matching position comprises: According to the difference between the current angle of the air duct switching plate and the matching angle, a target switching angle is determined. The air duct switching plate is controlled to rotate through the target switching angle.

16. A control device characterized by comprising: comprises: a memory, a processor, and an air conditioner indoor unit control program stored in the memory and executable on the processor, and when the air conditioner indoor unit control program is executed by the processor, the steps of the air conditioner indoor unit control method according to any one of claims 9 to 15 are implemented.

17. An air conditioner characterized by comprising: The air conditioner comprises the air conditioner indoor unit control device according to claim 16; or The air conditioner indoor unit according to any one of claims 1 to 8.

18. A storage medium, characterized by The storage medium stores an air conditioner indoor unit control program, and when the air conditioner indoor unit control program is executed by the processor, the steps of the air conditioner indoor unit control method according to any one of claims 9 to 15 are implemented.

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