An air conditioner indoor unit, an air conditioner, and a control method

Abstract

This application discloses an indoor air conditioning unit, an air conditioner, and a control method. The indoor air conditioning unit includes a frame and a panel. The frame has an air outlet and a first air inlet. The panel includes a main body and a cover. The main body is disposed on the frame and forms a second air inlet, or the panel and frame define the second air inlet. The cover is movably disposed on the main body or the frame for selectively opening or closing the second air inlet. By providing a first air inlet and a second air inlet, this application facilitates increasing the air intake of the indoor air conditioning unit and improving its heat exchange effect. With the movable cover, the second air inlet can be closed when the air intake of the first air inlet meets the demand. When the air intake of the first air inlet is insufficient, the cover can open the second air inlet to increase the air intake. By controlling the opening and closing state of the cover, the air intake demand of the indoor air conditioning unit under different conditions can be met, resulting in a simple structure.

Description

Technical Field

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

[0002] During air conditioner installation, there is an air intake area on the top of the indoor unit. Generally, during normal installation, sufficient installation height space needs to be reserved above the air intake area to ensure the air conditioner's air intake effect. Related technologies often include an air inlet on the top of the indoor unit. However, if there is insufficient installation space, the air intake resistance at the inlet will be too high, easily causing insufficient airflow during operation and resulting in unsatisfactory heat exchange performance. Summary of the Invention

[0003] In view of this, the embodiments of this application aim to provide an air conditioner indoor unit, an air conditioner, and a control method to solve the problem of unsatisfactory heat exchange effect of the air conditioner indoor unit due to insufficient air intake when there is insufficient installation space.

[0004] To achieve the above objectives, the technical solutions adopted in the embodiments of this application are as follows:

[0005] The first aspect of this application provides an indoor unit for an air conditioner, comprising:

[0006] The front frame has an air outlet and a first air inlet;

[0007] The panel includes a main body and a cover plate. The main body is disposed on the face frame and has a second air inlet. Alternatively, the main body and the face frame define a second air inlet. The cover plate is movably disposed on the main body or the face frame for selectively opening or closing the second air inlet.

[0008] In one embodiment, when the cover plate is in the state of closing the second air inlet, the main body, the cover plate, and the face frame constitute the exterior surface of the air conditioner indoor unit.

[0009] In one embodiment, when the cover is in the state of closing the second air inlet, the cover is smoothly connected to the main body; and / or,

[0010] With the cover plate in the closed second air inlet state, the cover plate is smoothly connected to the face frame.

[0011] In one embodiment, when the cover is in the state of having the second air inlet open, at least a portion of the cover is located inside the main body or inside the faceplate; and / or,

[0012] When the cover is in the state of having the second air inlet open, at least a portion of the cover is located outside the main body or outside the faceplate.

[0013] In one embodiment, the first air inlet is located at the top of the faceplate.

[0014] In one embodiment, the second air inlet is positioned close to the first air inlet.

[0015] In one embodiment, the indoor unit of the air conditioner includes an air inlet grille, which is disposed at the first air inlet and / or the second air inlet.

[0016] In one embodiment, the air intake grille is detachably disposed at the first air intake and / or the second air intake.

[0017] In one embodiment, the cover plate includes a first motion mechanism that drives the cover plate to open or close the second air inlet.

[0018] A second aspect of this application provides an air conditioner, which includes the indoor unit described in any of the above embodiments.

[0019] A third aspect of this application provides a control method for an indoor air conditioning unit, applied to an indoor air conditioning unit. The indoor air conditioning unit includes a frame, a panel, and a detection module. The frame has an air outlet and a first air inlet. The panel includes a main body and a cover. The main body is disposed on the frame and forms a second air inlet, or the main body and the frame define a second air inlet. The cover is movably disposed on the main body or the frame for selectively opening or closing the second air inlet. The control method includes:

[0020] Control the indoor unit of the air conditioner to start the installation and commissioning mode;

[0021] The detection module is controlled to detect the distance between the top of the face frame and the obstacle;

[0022] If the distance between the top of the faceplate and the obstacle is greater than or equal to the installation distance, then the cover plate is controlled to close the second air inlet; or,

[0023] If the distance between the top of the faceplate and the obstacle is less than the installation distance, the cover plate is controlled to open at least part of the second air inlet.

[0024] In one embodiment, the indoor unit of the air conditioner includes a powerful mode or a maintenance mode, wherein in the powerful mode or the maintenance mode, the cover is controlled to open at least a portion of the second air inlet.

[0025] In one embodiment, the control method includes:

[0026] Control the indoor unit of the air conditioner to turn on sleep mode;

[0027] The cover is controlled to open at least part of the second air inlet, and after a preset time, the cover is controlled to close the second air inlet.

[0028] In one embodiment, the control method includes:

[0029] Control the indoor unit of the air conditioner to activate the anti-freeze mode;

[0030] The opening of the second air inlet is adjusted based on the temperature change of the evaporator of the indoor unit of the air conditioner.

[0031] In one embodiment, adjusting the opening of the second air inlet based on the temperature change of the evaporator of the indoor unit of the air conditioner includes:

[0032] If the temperature of the evaporator is less than or equal to the first temperature, then the cover plate is controlled to fully open the second air inlet;

[0033] If the temperature of the evaporator is equal to the second temperature, then the cover plate is controlled to completely close the second air inlet;

[0034] If the temperature of the evaporator is between the first temperature and the second temperature, the cover is controlled to open at least part of the second air inlet, and the opening degree of the second air inlet is inversely proportional to the temperature of the evaporator, wherein the first temperature is less than the second temperature.

[0035] In one embodiment, adjusting the opening of the second air inlet based on the temperature change of the evaporator of the indoor unit of the air conditioner further includes:

[0036] If the temperature of the evaporator is greater than the second temperature but less than the third temperature, then the cover plate is controlled to open part of the second air inlet, and the second temperature is less than the third temperature;

[0037] If the temperature of the evaporator is greater than or equal to the third temperature, then the cover plate is controlled to completely close the second air inlet.

[0038] This application features a first air inlet on the front frame of the indoor unit and a second air inlet formed on the main body, or the second air inlet defined by the main body and the front frame. This increases the air intake area of ​​the air inlets, thereby increasing the air intake volume of the indoor unit and improving its heat exchange efficiency. A movable cover allows the second air inlet to close when the air intake from the first inlet is sufficient, preventing dust and other debris from entering the indoor unit. When the air intake from the first inlet is insufficient, the cover can open the second air inlet to increase the air intake. By controlling the opening and closing of the cover, the air intake requirements of the indoor unit under different conditions can be met, resulting in a simple structure. Attached Figure Description

[0039] Figure 1 This is a schematic diagram of the cover plate in the closed state according to an embodiment of this application;

[0040] Figure 2 This is a schematic diagram of the cover plate in the open state according to an embodiment of this application;

[0041] Figure 3 This is a schematic diagram of the cover plate in a windproof state according to an embodiment of this application;

[0042] Figure 4 This is a flowchart illustrating a control method for an indoor unit of an air conditioner according to an embodiment of this application.

[0043] Explanation of reference numerals in the attached figures

[0044] 10. Indoor unit of air conditioner; 1. Frame; 11. Air outlet; 12. First air inlet; 2. Panel; 21. Main body; 22. Cover plate; 23. Second air inlet; 3. Air inlet grille; 4. First motion mechanism; 41. Drive motor; 42. Linkage mechanism; 5. Detection module. Detailed Implementation

[0045] It should be noted that, unless otherwise specified, the embodiments and technical features in the embodiments of this application can be combined with each other, and the detailed descriptions in the specific implementation should be understood as explanations of the purpose of this application and should not be regarded as undue limitations on this application.

[0046] In the description of the embodiments of this application, it should be noted that the terms "top," "bottom," etc., indicate the orientation or positional relationship based on the accompanying drawings. These orientation terms are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application. The application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0047] Please refer to the air conditioner indoor unit 10 provided in this application. Figure 1 The indoor unit 10 of the air conditioner includes a frame 1 and a panel 2. The frame 1 has an air outlet 11 and a first air inlet 12. The panel 2 includes a body 21 and a cover 22. The body 21 is disposed on the frame 1 and has a second air inlet 23 formed thereon. Alternatively, the body 21 and the frame 1 define the second air inlet 23. The cover 22 is movably disposed on the body 21 or the frame 1 for selectively opening or closing the second air inlet 23.

[0048] The frame 1 is the external frame of the indoor unit 10 of the air conditioner, providing support and protection for other internal components of the air conditioner. An air outlet 11 and a first air inlet 12 are provided on the outer frame of the air conditioner to realize the air supply function of the indoor unit 10.

[0049] The location of the air outlet 11 is not restricted. Typically, the air outlet 11 is located on the side of the indoor unit 10 away from the installation surface, so that the airflow can be blown towards the user side to ensure smooth airflow.

[0050] The location and structure of the first air inlet 12 are not restricted here, as long as it can ensure smooth air intake.

[0051] Panel 2 refers to the component on the indoor unit 10 of the air conditioner used for operation, display or decoration. Panel 2 is usually located at the front of the indoor unit 10 of the air conditioner.

[0052] The second air inlet 23 here refers to the air intake structure formed on the main body 21 of the panel 2, or the air intake structure jointly defined by the main body 21 and the frame 1. In this way, the air intake area of ​​the indoor unit 10 can be increased, thereby increasing the air intake volume of the indoor unit 10.

[0053] The cover plate 22 is mounted on the main body 21 or the face frame 1, and has two states: open and closed. Please refer to [link / reference]. Figure 2 The "open state" here means that the cover 22 does not completely cover the second air inlet 23. For example, it can be that the second air inlet 23 is not covered, or only partially covered. The second air inlet 23 is connected to the outside, and outside air can enter the interior of the indoor unit 10 of the air conditioner through the second inlet. Please refer to... Figure 1 The closed state here means that the cover plate 22 completely blocks the second air inlet 23, and the outside air is blocked by the cover plate 22 and cannot smoothly enter the interior of the air conditioner indoor unit 10 through the second air inlet 23.

[0054] The specific structure of the cover plate 22 is not limited here; any structure that can open or close the second air inlet 23 is acceptable.

[0055] For example, the cover plate 22 is a plate-shaped structure corresponding to the shape of the second air inlet 23, and the cover plate 22 is provided with a microporous structure. The cover plate 22 can, on the one hand, shield the second air inlet 23, preventing dust and other fine debris from entering the indoor unit 10 of the air conditioner. On the other hand, please refer to... Figure 3 The cover plate 22 can also be set to a windproof state. In the windproof state, the cover plate 22 is set at the air outlet 11. The airflow blown out of the air outlet 11 is weakened after being blocked by the microporous structure on the cover plate 22, thereby softening the airflow and achieving the functions of preventing cold wind and wind sensation, reducing the airflow from the air outlet 11 from blowing directly on the user and causing user discomfort.

[0056] The structure by which the cover plate 22 moves is not limited here.

[0057] It should be noted that the first air inlet 12 is the main air inlet of the indoor unit 10 of the air conditioner, and outside air mainly enters the indoor unit 10 of the air conditioner through the first air inlet 12. The second air inlet 23 is the auxiliary air inlet of the indoor unit 10 of the air conditioner. When the air intake resistance of the first air inlet 12 is too high, resulting in insufficient air intake, or when the indoor unit 10 of the air conditioner needs a larger air intake, the second air inlet 23 will open to intake air.

[0058] This application provides a first air inlet 12 at the face frame 1 of the indoor unit 10 of the air conditioner, and a second air inlet 23 is formed on the main body 21, or the main body 21 and the face frame 1 define the second air inlet 23. This increases the air intake area of ​​the air inlet, thereby increasing the air intake volume of the indoor unit 10 and improving its heat exchange effect. A movable cover 22 is provided so that when the air intake volume of the first air inlet 12 meets the requirements, the cover 22 can close the second air inlet 23 to block dust and other debris from entering the indoor unit 10. When the air intake volume of the first air inlet 12 is insufficient, the cover 22 can open the second air inlet to increase the air intake volume. By controlling the opening and closing state of the cover 22, the air intake volume requirements of the indoor unit 10 under different conditions can be met, resulting in a simple structure.

[0059] In some embodiments, please refer to Figure 1 At least a portion of the second air inlet 23 faces the front of the indoor unit 10 of the air conditioner.

[0060] During the installation of the indoor unit 10 of the air conditioner, sufficient height space needs to be reserved between the first air inlet 12 on the frame 1 and the top to ensure the air intake of the indoor unit 10. When the installation space is insufficient, reserving sufficient height space will result in the indoor unit 10 being installed too low, affecting the user's usability.

[0061] Here, at least a portion of the second air inlet 23 is oriented towards the front of the indoor unit 10. Thus, at least a portion of the air intake area of ​​the second air inlet 23 is located on the front of the indoor unit 10, unobstructed by the top, allowing for normal air intake and ensuring the normal airflow of the indoor unit 10. This allows the indoor unit 10 to be installed flush with the ceiling, minimizing its encroachment on the user's living space.

[0062] In some embodiments, please refer to Figure 1 The second air inlet 23 is located in front of the first air inlet 12.

[0063] By placing the second air inlet 23 in front of the first air inlet 12, the second air inlet 23 is positioned as far as possible toward the open space in front of the air conditioner indoor unit 10, thereby reducing the air intake resistance of the second air inlet 23 and increasing the air intake volume of the air conditioner indoor unit 10.

[0064] In some embodiments, please refer to Figure 1 With the cover plate 22 closed and the second air inlet 23 closed, the main body 21, the cover plate 22 and the face frame 1 constitute the exterior surface of the air conditioner indoor unit 10.

[0065] When the cover 22 is closed, it completely covers the second air inlet 23. The outer surface of the cover 22, together with the main body 21 and the cover 22, forms the exterior surface of the air conditioner indoor unit 10. In other words, the cover 22 is part of the exterior surface of the air conditioner indoor unit 10. Thus, the cover 22 is integrated with the exterior surface of the air conditioner indoor unit 10, solving the problem of the cover 22 causing an unsightly appearance of the air conditioner indoor unit 10. On the other hand, the main body 21, the cover 22, and the frame 1 can be designed in various shapes, forming the exterior shape of the air conditioner indoor unit 10 after assembly, to meet the user's aesthetic requirements.

[0066] In some embodiments, please refer to Figure 1 When the cover plate 22 is in the state of closing the second air inlet 23, the cover plate 22 is smoothly connected to the main body 21.

[0067] A smooth connection refers to a smooth and continuous transition between the surfaces of two components at the joint, without any sudden protrusions or depressions. When the cover 22 is closed, it is smoothly connected to the main body 21. Visually, there is no obvious abruptness or boundary at the connection point, and from a distance, it can be viewed as a single unit, presenting a smooth and harmonious appearance and improving the aesthetics of the air conditioner indoor unit 10. Functionally, this reduces the difficulty of fitting the cover 22 to the main body 21 while improving the tightness of the connection between them.

[0068] In some embodiments, please refer to Figure 1 When the cover plate 22 is in the state of closing the second air inlet 23, the cover plate 22 is smoothly connected to the face frame 1.

[0069] With the cover plate 22 closed, it connects smoothly to the frame 1. Similarly, visually, there is no obvious abruptness or boundary at the connection between the cover plate 22 and the frame 1, and it can be regarded as a whole from a distance, presenting a smooth and harmonious appearance and improving the aesthetics of the air conditioner indoor unit 10. Functionally, it reduces the difficulty of fitting the cover plate 22 and the frame 1 together, while improving the tightness of the connection between the cover plate 22 and the frame 1.

[0070] In some embodiments, when the cover plate 22 is in the state of having the second air inlet 23 open, at least a portion of the cover plate 22 is located inside the body 21 or inside the faceplate 1.

[0071] With the cover plate 22 in the open state, since at least part of the second air inlet is not obscured by the cover plate 22 (meaning at least part of the cover plate 22 is not located in the area where the second air inlet 23 is located), this part of the cover plate 22 can be placed inside the main body 21 or the face frame 1. This part of the cover plate 22 that does not obstruct the second air inlet 23 can be covered by the main body 21 or the face frame 1, and cannot be seen by the user. At the same time, the part of the cover plate 22 that obstructs the second air inlet 23, the main body 21, and the face frame 1 continue to constitute the appearance of the air conditioner indoor unit 10. In this way, the damage to the appearance of the air conditioner indoor unit 10 when the cover plate 22 is open is reduced, and the aesthetic appearance of the air conditioner indoor unit 10 is maintained.

[0072] It should be noted that when the cover plate 22 is in the state of fully opening the second air inlet 23, that is, the second cover plate 22 does not cover the second air inlet 23 at all, the cover plate 22 is completely located inside the main body 21 or inside the width of the main body 21. At this time, the appearance of the air conditioner indoor unit 10 is composed of the main body 21 and the frame 1.

[0073] In some embodiments, please refer to Figure 2 When the cover plate 22 is in the state of having the second air inlet 23 open, at least a portion of the cover plate 22 is located outside the main body 21 or outside the face frame 1.

[0074] Here, the cover plate 22 is in the open state. The cover plate 22 is located on the outside of the main body 21 and the outside of the face frame 1. In this way, it does not occupy the internal space of the main body 21 or the internal space of the face frame 1, providing sufficient installation space for other components of the air conditioner indoor unit 10.

[0075] In some embodiments, please refer to Figure 1 The first air inlet 12 is located at the top of the face frame 1.

[0076] When installing the indoor unit 10 of the air conditioner, it is usually located near the top of the installation space. The first air inlet 12 is set at the top of the frame 1. If there is enough installation space, the first air inlet can draw air from the top of the indoor unit 10. At the same time, it is located in the top of the width of the frame, which is a blind spot for users during normal use, so that the appearance of the first air inlet is not exposed, thus improving the aesthetics of the indoor unit 10.

[0077] In some embodiments, please refer to Figure 1 The second air inlet 23 is located close to the first air inlet 12.

[0078] Here, the second air inlet 23 is positioned close to the first air inlet 12. This could mean that there is a certain gap between the second air inlet 23 and the first air inlet 12, and that the internal air intake channels of the second air inlet 23 and the first air inlet 12 are independent of each other. Alternatively, the second air inlet 23 can be externally connected to the first air inlet 12, and the internal air intake channels of the second air inlet 23 and the first air inlet 12 are independent of each other. Of course, the second air inlet 23 and the first air inlet 12 can also be connected as a whole to form a large air inlet.

[0079] In some embodiments, there is a certain gap between the second air inlet 23 and the first air inlet 12. The indoor unit 10 of the air conditioner is provided with a surrounding structure around the area of ​​the second air inlet 23 and the first air inlet 12, and the second air inlet 23 and the first air inlet 12 are set in the surrounding structure. In this way, when viewed from the outside, the second air inlet 23 and the first air inlet 12 form a whole, reducing the customer's perception that the second air inlet 23 and the first air inlet 12 are set separately, and improving the aesthetics of the indoor unit 10 of the air conditioner.

[0080] By placing the second air inlet 23 close to the first air inlet 12, the visual separation between the second air inlet 23 and the first air inlet 12 is reduced, thus improving the aesthetics of the air conditioner indoor unit 10.

[0081] In some embodiments, please refer to Figure 1 The indoor unit 10 of the air conditioner includes an air inlet grille 3, which is disposed at the first air inlet and / or the second air inlet.

[0082] As a protective device for the air inlet of the air conditioner, the air inlet grille 3 has a mesh structure that can prevent dust, hair, insects and other debris from entering the air conditioner, keeping the internal environment of the indoor unit 10 clean. This helps extend the service life of the indoor unit 10 and improve the cooling effect.

[0083] By setting air intake grilles at the first air intake and / or the second air intake, dust, hair and other debris in the air are intercepted from entering the interior of the air conditioner indoor unit 10, thereby improving the cleanliness of the air outlet.

[0084] In some embodiments, please refer to Figure 2 The air intake grille 3 is detachably installed at the first air intake 12 and / or the second air intake 23.

[0085] Since the cover plate 22 can selectively open or close the second air inlet 23, when the cover plate 22 opens the second air inlet 23, since the second air inlet 23 is connected to the interior of the air conditioner indoor unit 10, when the cover plate 22 is fully open and does not block the second air inlet 23, the air intake area of ​​the second air inlet 23 can directly reach the interior of the air conditioner indoor unit 10. The air intake area of ​​the second air inlet 23 can be used to easily disassemble or install the air intake grille 3.

[0086] The specific structure of the air intake grille 3 is not limited here. Any structure that is easy to install and can be easily extended into the interior of the air conditioner indoor unit 10 from the second air intake 23 is acceptable.

[0087] For example, the air intake grille 3 is a sheet structure. The air intake grille 3 can completely cover the first air intake and the second air intake inside the air conditioner. By using the magnetic structure set on the edge of the air intake grille 3 to cooperate with the magnetic structure inside the air conditioner indoor unit 10, the air intake grille 3 can be quickly installed and removed.

[0088] By making the air intake grille 3 a detachable structure, and utilizing the installation space provided by the second air intake 23 when it is open, the air intake grille 3 can be installed into the indoor unit 10 of the air conditioner. This facilitates the installation of the air intake grille 3, as well as the user's ability to clean or replace it during subsequent use.

[0089] In some embodiments, please refer to Figure 2 The cover plate 22 includes a first motion mechanism 4, which drives the cover plate 22 to open or close the second air inlet 23.

[0090] The specific structure of the first motion mechanism 4 is not limited here; it can be any structure that can drive the cover plate 22 to move, thereby opening or closing the second air inlet 23.

[0091] Exemplarily, the first motion mechanism 4 includes a drive motor 41, a gear, and a rack, wherein the gear is connected to the drive motor 41, and the rack is connected to the cover plate 22. In some embodiments, a rack structure adapted to the gear can be machined on the cover plate 22. A slide rail is provided on the main body 21 or the face frame 1, and the cover plate 22 slides in engagement with the slide rail. The drive motor 41 drives the gear to rotate, and the gear meshes with the rack, driving the cover plate 22 to move up and down, thereby opening or closing the second air inlet 23.

[0092] For example, the second drive mechanism includes a drive motor 41 and a linkage mechanism 42. One end of the linkage mechanism 42 is connected to the drive motor 41, and the other end is connected to the cover plate 22. The drive motor 41 drives the linkage to rotate, causing the cover plate 22 to move away from or closer to the second air inlet 23, changing the coverage area of ​​the cover plate 22 over the second air inlet 23, thereby opening or closing the cover plate 22 over the second air inlet 23. In addition, the linkage mechanism 42 can also drive the cover plate 22 to partially cover the air inlet, so that the cover plate 22 is in a semi-covered state. On the other hand, please refer to... Figure 3 The linkage structure can also move the cover plate 22 to the air outlet 11. The cover plate 22 is in a windproof state. The microporous structure on the cover plate 22 weakens and softens the airflow at the air outlet 11, improving the user experience.

[0093] By setting the first motion mechanism 4 to drive the cover plate 22 to open or close the second air inlet 23, the first motion mechanism 4 can be connected to the air conditioner control system and can switch the state of the cover plate 22 according to different usage scenarios to achieve automated control.

[0094] This application provides an air conditioner, which includes the indoor unit 10 of any of the above embodiments. Thus, the air conditioner can be installed and used normally whether there is sufficient installation space or not.

[0095] This application provides a control method for an air conditioner indoor unit 10, applied to the air conditioner indoor unit 10. Please refer to [link / reference]. Figures 1 to 3 The indoor unit 10 of the air conditioner includes a frame 1, a panel 2, and a detection module 5. The frame 1 has an air outlet 11 and a first air inlet 12. The panel 2 includes a main body 21 and a cover 22. The main body 21 is disposed on the frame 1 and has a second air inlet 23 formed thereon. Alternatively, the main body 21 and the frame 1 define the second air inlet 23. The cover 22 is movably disposed on the main body 21 or the frame 1 for selectively opening or closing the second air inlet 23. Please refer to [link to relevant documentation]. Figure 4 The control method includes the following steps S101 to S103:

[0096] Step S101: Control the indoor unit of the air conditioner to start the installation and commissioning mode.

[0097] The installation and commissioning mode is a unique operating mode of the indoor unit 10 of the air conditioner, which is activated during the initial installation of the air conditioner or when specific maintenance and commissioning operations are performed. In this mode, the air conditioner performs a series of specific detection and control actions. In the embodiments of this application, the installation and commissioning mode refers to the indoor unit 10 adjusting the air intake volume of the second air inlet 23 by controlling the opening and closing of the cover 22 to adapt to different installation spaces, so as to meet the installation environment.

[0098] Only after entering the installation and commissioning mode will the air conditioner perform a series of subsequent tests and adaptations to the installation environment. This helps to accurately adjust the air intake status of the air conditioner during the initial installation phase or when performing special commissioning tasks, avoiding unnecessary testing and adjustment actions in normal operating mode, and reducing energy consumption and component wear.

[0099] Step S102: Control the detection module to detect the distance between the top of the face frame and the obstacle.

[0100] The detection module 5 is a device for detecting distance. The detection module 5 includes, but is not limited to, infrared sensors, ultrasonic sensors, etc. In the indoor unit 10 of the air conditioner, it is mainly responsible for detecting the distance between the top of the face frame 1 and the obstacle, so as to provide a basis for subsequent control actions. Its detection accuracy and reliability will affect the effectiveness of the entire air conditioning control strategy.

[0101] In step S102, the control detection module 5 detects the distance between the top of the faceplate 1 and the obstacle. Through the operation of the detection module 5, spatial distance information between the top of the faceplate 1 and potential obstacles (such as ceilings, hanging objects, etc.) in the air conditioner installation environment can be obtained. This distance information is crucial for determining whether the air intake space of the air conditioner is sufficient.

[0102] In step S103, if the distance between the top of the faceplate and the obstacle is greater than the installation distance, the control cover closes the second air inlet. Alternatively, if the distance between the top of the faceplate and the obstacle is less than the installation distance, the control cover opens at least part of the second air inlet.

[0103] The installation distance is a pre-set standard distance value used to compare with the distance between the top of the faceplate 1 and the obstacle detected by the detection module 5, thereby determining whether the state of the cover plate 22 needs to be adjusted. This distance value is usually determined based on the air conditioner's design requirements, performance characteristics, and extensive experimental and practical application experience. Different models and specifications of air conditioners may have different installation distance settings.

[0104] For example, the installation distance is 5cm. If the distance between the top of the faceplate 1 and the obstacle is greater than or equal to 5cm, the air intake space at the top of the air conditioner is sufficient, and there is no need to increase the air intake area. In this case, the cover plate 22 can be controlled to close the second air inlet 23. If the distance between the top of the faceplate 1 and the obstacle is less than 5cm, the air intake space at the top of the air conditioner is insufficient. In this case, the cover plate 22 can be controlled to open at least part of the second air inlet 23 to increase the air intake area and increase the air intake volume of the air conditioner indoor unit 10. Here, the cover plate 22 can be controlled to open all of the second air inlets 23, or it can be controlled to open part of the air inlets. The specific opening degree is determined according to the amount of air intake required for the operation of the air conditioner indoor unit 10.

[0105] The operation of the cover plate 22 is controlled based on the comparison between the detected distance and the installation distance. If the distance between the top of the faceplate 1 and the obstacle is greater than the installation distance, it means there is enough space above the air conditioner for air to enter smoothly. In this case, the cover plate 22 is controlled to close the second air inlet 23, which reduces unnecessary air intake channels and prevents excessive dust and other impurities from entering the air conditioner. It also helps to optimize the airflow organization inside the air conditioner under specific operating conditions, improving cooling or heating efficiency. Conversely, if the distance between the top of the faceplate 1 and the obstacle is less than the installation distance, it means that the air intake space above the air conditioner is limited. In this case, the cover plate 22 is controlled to open at least part of the second air inlet 23, which increases the air intake area and ensures that the air conditioner has enough air to enter to maintain normal operating performance and avoid problems such as poor cooling or heating effect due to insufficient air intake.

[0106] By detecting the distance between the top of the faceplate 1 and the obstacle and controlling the opening and closing of the cover plate 22 accordingly, the air conditioner can adapt to different installation environments. Whether in a spacious room or in a space-constrained environment such as a low ceiling, the air conditioner can ensure normal operation and maintain good performance, thus expanding the applicability of the air conditioner.

[0107] In some embodiments, the indoor unit 10 of the air conditioner includes a powerful mode or a maintenance mode, in which the control cover 22 opens at least part of the second air inlet 23.

[0108] The powerful mode is a special operating mode for the indoor unit 10 of the air conditioner. In this mode, the air conditioner operates at a higher power to quickly reach the set temperature or maintain a stable indoor temperature under extreme environmental conditions. The air conditioner typically increases the fan speed and cooling or heating power to provide a stronger cooling or heating effect in a short time, meeting the user's need for rapid adjustment of the indoor temperature. For example, this mode can be selected when users want to cool down quickly in hot summers or heat up quickly in cold winters.

[0109] When the indoor unit 10 of the air conditioner is in strong mode, a larger air volume circulation is required to achieve rapid cooling or heating. By opening at least part of the second air inlet 23 through the control cover 22, the passage area for air to enter the air conditioner can be increased, allowing more air to be drawn into the air conditioner for heat exchange, thereby improving the cooling or heating efficiency of the air conditioner, changing the indoor temperature environment more quickly, and meeting the user's expectation of rapid temperature adjustment.

[0110] In some embodiments, the powerful mode can be activated by the user according to their needs. Furthermore, in other embodiments, the detection module 5 has an infrared sensor that can detect the number of people in the air-conditioning environment. If the number exceeds a set value, the indoor unit 10 can automatically activate the powerful mode to meet the needs of multiple users.

[0111] The maintenance mode is a working mode specifically designed for air conditioning repair personnel when inspecting, maintaining, and troubleshooting air conditioners. In this mode, some functions or components of the air conditioner are set to specific states, allowing repair personnel to more easily inspect and repair the internal structure, circuit system, sensors, etc. For example, the fan may be kept running continuously, certain protection functions may be temporarily deactivated, or indicator lights of specific components may be illuminated to indicate their working status. This helps to quickly locate and resolve air conditioner malfunctions, ensuring the normal operation and lifespan of the air conditioner.

[0112] In maintenance mode, opening at least part of the second air inlet 23 may be to facilitate maintenance personnel in inspecting and testing airflow-related components such as the air ducts and fans inside the air conditioner. For example, maintenance personnel can observe the airflow at the air inlet and check parameters such as wind speed to determine whether the fan is working properly and whether there are any blockages in the air ducts. Additionally, in some maintenance operations, it may be necessary to simulate the airflow conditions during normal operation; opening the air inlet helps create such conditions for more accurate fault diagnosis and repair.

[0113] In some embodiments, the control method includes the following steps S201 to S202:

[0114] Step S201: Control the indoor unit of the air conditioner to turn on sleep mode.

[0115] Sleep mode is an operating mode set by air conditioners to meet people's needs for environmental comfort and energy saving during sleep. In this mode, the air conditioner adjusts operating parameters such as temperature, fan speed, and air volume according to preset programs to create a quiet, comfortable, and relatively energy-efficient sleep environment. Typically, in sleep mode, the air conditioner will gradually raise or lower the set temperature over time to prevent people from experiencing discomfort due to temperature during sleep, and it will also reduce the fan speed to reduce noise interference.

[0116] Step S202: Control the cover to open at least part of the second air inlet, and control the cover to close the second air inlet after a preset time.

[0117] The preset time is a pre-set duration in the air conditioner's sleep mode program. This time value is determined based on research into the physiological changes and environmental comfort patterns during human sleep, as well as a large amount of experimental data.

[0118] For example, people are more sensitive to changes in the environment when they first fall asleep and need a certain amount of air circulation to maintain comfort. As sleep deepens, the need for air circulation gradually decreases. The preset time is used to define this transitional stage from needing air intake to being able to reduce air intake. Different brands and models of air conditioners may set different preset time values ​​based on their own design concepts and target user groups.

[0119] When the indoor unit 10 of the air conditioner is turned on into sleep mode, the control cover 22 in step S202 first opens at least part of the second air inlet 23. This is in line with the fact that at the beginning of sleep, the human body is still in a relatively awake or light sleep state. At this time, proper air circulation helps to maintain the freshness and comfort of the indoor air, avoids stuffiness caused by poor air circulation, and allows people to fall asleep more easily.

[0120] After a preset time, the human body usually enters a deeper sleep stage. At this time, the perception and need for airflow are relatively reduced, and continuous airflow may bring some adverse factors such as noise and excessive evaporation of body surface moisture, which may affect sleep quality. Therefore, at this time, controlling the cover 22 to close the second air inlet 23 can reduce unnecessary air entry and flow, reduce air conditioning operating noise, maintain a relatively stable indoor temperature, and reduce heat loss or uneven heat distribution caused by airflow, thereby further improving sleep comfort and stability.

[0121] In some embodiments, the control method includes the following steps S301 to S302:

[0122] Step S301: Control the indoor unit of the air conditioner to turn on the anti-freeze mode.

[0123] Anti-freeze mode is a protective mode set up by the indoor unit 10 of the air conditioner to prevent the evaporator from frosting or even freezing under specific low-temperature environments or operating conditions. When the air conditioner is running, if the surface temperature of the evaporator is too low, water vapor in the surrounding air will condense into frost or ice on its surface. This not only reduces the heat exchange efficiency of the evaporator and affects the cooling and heating effect of the air conditioner, but may also damage the evaporator and increase maintenance costs. Anti-freeze mode monitors and regulates the temperature of the evaporator through a series of control strategies to ensure that it operates within a safe range.

[0124] Step S302: Adjust the opening of the second air inlet based on the temperature change of the evaporator of the indoor unit of the air conditioner.

[0125] The evaporator is a key heat exchange component in an air conditioning system, located inside the indoor unit 10. It consists of a series of metal pipes and fins. Refrigerant flows within the pipes, exchanging heat with the indoor air to absorb heat (during cooling) or release heat (during heating). The evaporator's temperature directly affects its heat exchange efficiency and the surrounding air conditions, making it an important monitoring and regulating element in air conditioning operation control.

[0126] When the indoor unit 10 of the air conditioner turns on the anti-freeze mode, it enters step S302, which is to adjust the opening of the second air inlet 23 based on the temperature change of the evaporator of the indoor unit 10 of the air conditioner.

[0127] During normal operation, the evaporator temperature needs to be maintained within a suitable range to ensure good heat exchange efficiency. If the evaporator temperature begins to drop and approaches the critical temperature at which frost or ice may form, the air conditioning control system will adjust the opening of the second air inlet 23 to change the amount and velocity of air entering the air conditioning unit. For example, when the evaporator temperature is too low, the opening of the second air inlet 23 will be appropriately increased to allow more indoor air to flow through the evaporator. Since air has a certain amount of heat, increasing the airflow can provide more heat to the evaporator, thereby raising its temperature and preventing frost or ice formation.

[0128] Conversely, if the evaporator temperature is high but within a safe range, the opening of the second air inlet 23 can be appropriately reduced to optimize the airflow organization and energy utilization efficiency inside the air conditioner.

[0129] In some embodiments, the detection module 5 includes a multi-point temperature sensor. Multiple high-precision temperature sensors are evenly distributed on the evaporator surface, allowing for more comprehensive and accurate acquisition of temperature information at different locations on the evaporator, avoiding misjudgments or inaccurate control due to localized temperature anomalies. For example, temperature sensors can be installed at the evaporator's inlet, outlet, and different intermediate areas. The air conditioning control system can then comprehensively determine the overall temperature state of the evaporator based on this multi-point temperature data, thereby more rationally adjusting the opening degree of the second air inlet 23 and other relevant operating parameters.

[0130] By monitoring the evaporator temperature in real time and adjusting the opening of the second air inlet (23°C) accordingly, frost or ice buildup on the evaporator is effectively prevented. Frost or ice buildup reduces the heat exchange performance of the evaporator, and long-term accumulation can lead to permanent damage such as evaporator pipe rupture and fin deformation. This anti-freeze mode control strategy ensures that the evaporator always operates in a safe and efficient state, reducing air conditioner repair and replacement costs due to evaporator failure and significantly extending the service life of the air conditioner.

[0131] In some embodiments, step S302 includes the following steps S3021 to S3023:

[0132] Step S3021: If the temperature of the evaporator is less than or equal to the first temperature, then control the cover to fully open the second air inlet.

[0133] The first temperature is a preset threshold temperature for the evaporator. When the evaporator temperature drops to less than or equal to this value, it indicates that the evaporator is in a low-temperature state, with a greater risk of frosting or icing. This value is usually determined based on the air conditioner's design specifications, refrigerant characteristics, and extensive experimental testing. Different models and cooling / heating capacities of air conditioners may have different first temperature settings, generally in the range close to or even slightly below 0°C.

[0134] For example, the first temperature is 4°C.

[0135] When the evaporator temperature is less than or equal to the first temperature, it means that the evaporator is already in the low-temperature danger zone. At this time, the control cover 22 fully opens the second air inlet 23. This is because it is necessary to maximize the amount of air entering the system, allowing more warm indoor air (relative to the evaporator temperature) to flow quickly through the evaporator. This utilizes the heat of the air to raise the evaporator temperature, preventing further deterioration of frost or ice buildup, ensuring the normal heat exchange function of the air conditioner is maintained, and avoiding the impact of evaporator failure on the operation of the entire cooling or heating system.

[0136] Step S3022: If the temperature of the evaporator is equal to the second temperature, then control the cover to completely close the second air inlet.

[0137] The second temperature is also a preset evaporator temperature threshold. When the evaporator temperature reaches this value, it indicates that the evaporator temperature is within a normal or higher safe range, and no additional airflow is needed to raise the temperature and prevent freezing. Its value is higher than the first temperature, and the specific value depends on the air conditioner's design and performance requirements. At this temperature, the air conditioner can maintain relatively efficient operation without worrying about frost formation. Therefore, the second air inlet 23 can be closed to optimize internal airflow and reduce the entry of dust and other impurities.

[0138] For example, the first temperature is 6°C.

[0139] If the evaporator temperature equals the second temperature, the control cover 22 completely closes the second air inlet 23. Since the evaporator temperature is at a normal and safe high level at this time, no additional airflow is needed to prevent freezing. Closing the air inlet reduces unnecessary air entering the air conditioner, helps optimize airflow organization inside the air conditioner, enables more efficient heat exchange during normal operation, reduces energy loss, and also prevents dust and other impurities from entering the air conditioner, protecting the internal components and extending their service life.

[0140] In step S3023, if the temperature of the evaporator is between the first temperature and the second temperature, the control cover is opened at least partially to open the second air inlet, and the opening degree of the second air inlet is inversely proportional to the temperature of the evaporator, with the first temperature being less than the second temperature.

[0141] The opening degree of the second air inlet 23 refers to the extent to which the second air inlet 23 is open, and is used to measure the area of ​​the passageway through which air enters the indoor unit 10 of the air conditioner. It can be expressed as a percentage or by specific angles, areas, etc. For example, an opening degree of 0% means that the second air inlet 23 is completely closed, and no air enters the air conditioner from this inlet. An opening degree of 100% means that the second air inlet 23 is fully open, and air can enter the air conditioner with the maximum passage area.

[0142] When the evaporator temperature is between the first and second temperatures, it indicates that the evaporator temperature is in an intermediate state; it is neither at an extremely low temperature requiring a large amount of air intake to raise the temperature, nor at a safe high temperature where the air inlet can be completely closed. At this time, the control cover 22 opens at least partially the second air inlet 23, and the opening degree of the second air inlet 23 is inversely proportional to the evaporator temperature. That is, the closer the evaporator temperature is to the first temperature, the larger the air inlet opening; the closer it is to the second temperature, the smaller the air inlet opening.

[0143] In this way, the air intake can be precisely adjusted according to the real-time temperature of the evaporator, so that the air conditioner can optimize its operating efficiency as much as possible while ensuring that the evaporator does not frost, and avoid problems such as energy waste and airflow turbulence caused by excessive air intake.

[0144] For example, the temperature of the evaporator is between the first temperature and the second temperature, and the opening degree of the second air inlet 23 is inversely proportional to the value of the evaporator temperature, satisfying the following formula:

[0145]

[0146] Where A is the opening degree of the second air inlet, T0 is the temperature of the evaporator, T1 is the first temperature, and T2 is the second temperature.

[0147] In some embodiments, step S302 includes the following steps S3024 to S3025:

[0148] In step S3024, if the temperature of the evaporator is greater than the second temperature but less than the third temperature, then the cover plate is controlled to open part of the second air inlet, and the second temperature is less than the third temperature.

[0149] The third temperature is a newly set evaporator temperature threshold, which is higher than the second temperature. When the evaporator temperature reaches or exceeds the third temperature, it indicates that the evaporator is in a high-temperature state. At this time, closing the second air inlet 23 can prevent excessive heat loss or excessive air inflow from affecting the heat exchange balance and operational stability inside the air conditioner.

[0150] For example, the third temperature is 8°C.

[0151] When the temperature of the evaporator is greater than the second temperature but less than the third temperature, the control cover 22 opens part of the second air inlet 23.

[0152] Step S3025: If the temperature of the evaporator is greater than or equal to the third temperature, then control the cover plate to completely close the second air inlet.

[0153] If the evaporator temperature is greater than or equal to the third temperature, the control cover 22 completely closes the second air inlet 23. This is to prevent excessive air from entering the air conditioner, avoid excessive heat loss due to excessive airflow, which could lead to a decrease in the air conditioner's cooling or heating effect, and protect other internal components from damage or performance degradation that may occur due to prolonged impact from high-temperature airflow, thus maintaining the stable operation of the air conditioning system in high-temperature environments.

[0154] For example, when the anti-freeze mode is first activated, the detection module 5 detects the evaporator temperature. When the evaporator temperature is between the first and second temperatures, the control cover 22 opens at least part of the second air inlet 23, and the opening degree of the second air inlet 23 is inversely proportional to the evaporator temperature. When the evaporator temperature equals the second temperature, the opening degree of the second air inlet 23 is 0, that is, the second air inlet 23 is completely closed. At this time, due to the reduced air intake, the evaporator temperature may drop, which may cause the second air inlet 23 to open quickly. When the evaporator temperature rises to a level greater than the second temperature but less than the third temperature, the control cover 22 opens part of the second air inlet 23. At this time, the opening degree of the second air inlet 23 can be a fixed value, for example, a fixed value of 20%. When the evaporator temperature is greater than or equal to the third temperature, the opening degree of the second air inlet 23 changes from 20% to 0, and the cover 22 completely closes the second air inlet 23.

[0155] By controlling the cover 22 to partially open the second air inlet 23 when the evaporator temperature is higher than the second temperature but lower than the third temperature, and setting this opening value to a constant, the wear and tear on the cover 22 caused by repeated opening and closing at the fluctuating second temperature is reduced, as well as the noise from repeated movement. By setting a third temperature threshold and precisely controlling the opening of the second air inlet 23 within different temperature ranges, the air conditioner can more accurately maintain the evaporator temperature within an ideal range. Stable temperature control can be achieved in both the low-temperature range to prevent evaporator frosting and the high-temperature range to prevent evaporator overheating and optimize heat exchange. This helps improve the stability of the air conditioner's cooling or heating performance, allowing the indoor temperature to be maintained more evenly and continuously within the user-set comfort range, reducing discomfort caused by temperature fluctuations and improving the user experience.

[0156] The above description is merely a preferred embodiment of this application and is not intended to limit the application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application are included within the scope of protection of this application.

Claims

1. An indoor unit for an air conditioner, characterized in that, include: The front frame has an air outlet and a first air inlet; The panel includes a main body and a cover plate. The main body is disposed on the face frame and has a second air inlet. Alternatively, the main body and the face frame define a second air inlet. The cover plate is movably disposed on the main body or the face frame for selectively opening or closing the second air inlet.

2. The indoor unit of the air conditioner according to claim 1, characterized in that, At least a portion of the second air inlet faces the front of the indoor unit of the air conditioner; and / or, The second air inlet is located in front of the first air inlet.

3. The indoor unit of the air conditioner according to claim 1, characterized in that, With the cover plate closed at the second air inlet, the main body, the cover plate, and the face frame constitute the exterior surface of the indoor unit of the air conditioner.

4. The indoor unit of the air conditioner according to claim 1, characterized in that, When the cover plate is in the state of closing the second air inlet, the cover plate is smoothly connected to the main body; and / or, With the cover plate in the closed second air inlet state, the cover plate is smoothly connected to the face frame.

5. The indoor unit of the air conditioner according to claim 1, characterized in that, When the cover is in the state of having the second air inlet open, at least a portion of the cover is located inside the main body or inside the faceplate; And / or, When the cover is in the state of having the second air inlet open, at least a portion of the cover is located outside the main body or outside the faceplate.

6. The indoor unit of the air conditioner according to any one of claims 1-5, characterized in that, The first air inlet is located at the top of the faceplate; and / or, The second air inlet is located close to the first air inlet.

7. The air conditioner indoor unit according to any one of claims 1-5, characterized in that, The indoor unit of the air conditioner includes an air inlet grille, which is disposed at the first air inlet and / or the second air inlet.

8. The indoor unit of the air conditioner according to claim 7, characterized in that, The air intake grille is detachably disposed at the first air intake and / or the second air intake.

9. The indoor unit of the air conditioner according to any one of claims 1-4, characterized in that, The cover plate includes a first motion mechanism, which drives the cover plate to open or close the second air inlet.

10. An air conditioner, characterized in that, The air conditioner includes the indoor unit of the air conditioner as described in any one of claims 1-9.

11. A control method for an indoor unit of an air conditioner, characterized in that, An air conditioner indoor unit is used in an air conditioner. The air conditioner indoor unit includes a frame, a panel, and a detection module. The frame has an air outlet and a first air inlet. The panel includes a main body and a cover plate. The main body is disposed on the frame and forms a second air inlet. Alternatively, the main body and the frame define a second air inlet. The cover plate is movably disposed on the main body or the frame for selectively opening or closing the second air inlet. The control method includes: Control the indoor unit of the air conditioner to start the installation and commissioning mode; The detection module is controlled to detect the distance between the top of the face frame and the obstacle; If the distance between the top of the faceplate and the obstacle is greater than or equal to the installation distance, then the cover plate is controlled to close the second air inlet; or, If the distance between the top of the faceplate and the obstacle is less than the installation distance, the cover plate is controlled to open at least part of the second air inlet.

12. The control method according to claim 11, characterized in that, The indoor unit of the air conditioner includes a powerful mode or a maintenance mode, in which the cover is controlled to open at least part of the second air inlet.

13. The control method according to claim 11, characterized in that, The control method includes: Control the indoor unit of the air conditioner to turn on sleep mode; The cover is controlled to open at least part of the second air inlet, and after a preset time, the cover is controlled to close the second air inlet.

14. The control method according to claim 11, characterized in that, The control method includes: Control the indoor unit of the air conditioner to activate the anti-freeze mode; The opening of the second air inlet is adjusted based on the temperature change of the evaporator of the indoor unit of the air conditioner.

15. The control method according to claim 14, characterized in that, Adjusting the opening of the second air inlet based on the temperature change of the evaporator of the indoor unit of the air conditioner includes: If the temperature of the evaporator is less than or equal to the first temperature, then the cover plate is controlled to fully open the second air inlet; If the temperature of the evaporator is equal to the second temperature, then the cover plate is controlled to completely close the second air inlet; If the temperature of the evaporator is between the first temperature and the second temperature, the cover is controlled to open at least part of the second air inlet, and the opening degree of the second air inlet is inversely proportional to the temperature of the evaporator, wherein the first temperature is less than the second temperature.

16. The control method according to claim 15, characterized in that, The method of adjusting the opening of the second air inlet based on the temperature change of the evaporator of the indoor unit of the air conditioner further includes: If the temperature of the evaporator is greater than the second temperature but less than the third temperature, then the cover plate is controlled to open part of the second air inlet, and the second temperature is less than the third temperature; If the temperature of the evaporator is greater than or equal to the third temperature, then the cover plate is controlled to completely close the second air inlet.

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